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Added editor codebase

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This commit is contained in:
Gabriel Weingardt
2026-03-12 21:08:35 +01:00
parent b7b3044b63
commit 9afd8b9670
48 changed files with 57365 additions and 0 deletions
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Editor/Makefile Normal file
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.ONESHELL:
#
# Cross Platform Makefile
# Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
#
# You will need SDL2 (http://www.libsdl.org):
# Linux:
# apt-get install libsdl2-dev
# Mac OS X:
# brew install sdl2
# MSYS2:
# pacman -S mingw-w64-i686-SDL2
#
#CXX = g++
#CXX = clang++
EXE = spedit
IMGUI_DIR = imgui
SOURCES = main.cpp serialib.cpp
SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp
SOURCES += $(IMGUI_DIR)/backends/imgui_impl_sdl2.cpp $(IMGUI_DIR)/backends/imgui_impl_sdlrenderer2.cpp
OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
UNAME_S := $(shell uname -s)
CXXFLAGS = -std=c++11 -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends -ljson11
CXXFLAGS += -g -Wall -Wformat
LIBS =
##---------------------------------------------------------------------
## BUILD FLAGS PER PLATFORM
##---------------------------------------------------------------------
ifeq ($(UNAME_S), Linux) #LINUX
ECHO_MESSAGE = "Linux"
LIBS += -lGL -ldl `sdl2-config --libs`
CXXFLAGS += `sdl2-config --cflags`
CFLAGS = $(CXXFLAGS)
endif
ifeq ($(UNAME_S), Darwin) #APPLE
ECHO_MESSAGE = "Mac OS X"
LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo `sdl2-config --libs`
LIBS += -L/usr/local/lib -L/opt/local/lib
CXXFLAGS += `sdl2-config --cflags`
CXXFLAGS += -I/usr/local/include -I/opt/local/include
CFLAGS = $(CXXFLAGS)
endif
ifeq ($(OS), Windows_NT)
ECHO_MESSAGE = "MinGW"
LIBS += -lgdi32 -lopengl32 -limm32 `pkg-config --static --libs sdl2`
CXXFLAGS += `pkg-config --cflags sdl2`
CFLAGS = $(CXXFLAGS)
endif
##---------------------------------------------------------------------
## BUILD RULES
##---------------------------------------------------------------------
%.o:%.cpp
$(CXX) $(CXXFLAGS) -c -o $@ $<
%.o:$(IMGUI_DIR)/%.cpp
$(CXX) $(CXXFLAGS) -c -o $@ $<
%.o:$(IMGUI_DIR)/backends/%.cpp
$(CXX) $(CXXFLAGS) -c -o $@ $<
all: $(EXE)
@echo Build complete for $(ECHO_MESSAGE)
rm bin -rf
mkdir bin
mv $(EXE) bin
strip bin/$(EXE)
$(EXE): $(OBJS)
$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
clean:
rm -f $(EXE) $(OBJS)
install:
mkdir -p $(PREFIX)/bin
install bin/$(EXE) $(PREFIX)/bin/$(EXE)
cp bin/$(EXE) /usr/bin/$(EXE)

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#include <SDL2/SDL.h>
#include <algorithm>
#include <cstdio>
#include <cstdlib>
#include <bits/stdc++.h>
#include "imgui.h"
#include "serialib.h"
#include "ssup.h"
using namespace std;
void renderActions(){
static string deleteString;
ImVec2 parentWidth = ImVec2(ImGui::GetWindowWidth() - 16, 0);
ImGui::BeginDisabled(!connected);
ImGui::SeparatorText(appLang == LANG::ENGLISH ? "Erasing" : "Löschen");
if (ImGui::Button(appLang == LANG::ENGLISH ? "Erase TOC (fastest)" : "TOC löschen (schnell)", parentWidth)) {
deleteString = "f";
ImGui::OpenPopup("Erase?");
}
ImGui::SetItemTooltip("Erase Filesystem structure -> fast -> could lead to \"ghost content\"");
if (ImGui::Button(appLang == LANG::ENGLISH ? "Erase everything (slowest)" : "Alles löschen (langsam)", parentWidth)) {
deleteString = "c";
ImGui::OpenPopup("Erase?");
}
ImGui::SetItemTooltip("Overwrite the storage -> slower -> safer");
ImVec2 center = ImGui::GetMainViewport()->GetCenter();
ImGui::SetNextWindowPos(center, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
if (ImGui::BeginPopupModal("Erase?", NULL, ImGuiWindowFlags_AlwaysAutoResize)) {
ImGui::Text(appLang == LANG::ENGLISH ? "Erasing will result in permanent data loss!" : "Löschen kann nicht rückgängig gemacht werden!");
ImGui::Separator();
ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0, 0));
ImGui::PopStyleVar();
if (ImGui::Button("OK", ImVec2(120, 0))) {
serial.writeString(deleteString.c_str());
ImGui::CloseCurrentPopup();
}
ImGui::SetItemDefaultFocus();
ImGui::SameLine();
if (ImGui::Button(appLang == LANG::ENGLISH ? "Cancel" : "Abbrechen", ImVec2(120, 0))) ImGui::CloseCurrentPopup();
ImGui::EndPopup();
}
ImGui::SeparatorText("");
if (ImGui::Button(appLang == LANG::ENGLISH ? "Restore Settings" : "Einstellungen wiederherstellen", parentWidth)) serial.writeString("rg");
ImGui::SetItemTooltip("Set all the settings back to their original value.\nThis operation does not erase content.");
ImGui::SeparatorText("");
ImGui::Button("Download SSUP Content", parentWidth);
ImGui::SetItemTooltip("Download the content from SSUP to a JSON file.\nOne can reproduce and edit it's content after.");
ImGui::Button("Upload to SSUP", parentWidth);
ImGui::SetItemTooltip("Upload the content in this program to SSUP. This could take a couple of minutes");
ImGui::EndDisabled();
}

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#include <SDL2/SDL_mouse.h>
#include <cstdio>
#include <cstdlib>
#include <SDL2/SDL.h>
#include <ctime>
#include <string>
#include <bits/stdc++.h>
#include <json11.hpp>
#include "imgui.h"
#include "serialib.h"
#include "ssup.h"
using namespace std;
using namespace json11;
string cutJSON(string input){
int start = input.find_first_of('{');
int end = input.find_last_of('}');
return input.substr(start, (end - start) + 1);
}
void restartDevice(serialib &serial){
serial.clearDTR();
SDL_Delay(10);
serial.setDTR();
}
void renderConnectModule(){
if (ImGui::BeginTabItem(appLang == LANG::ENGLISH ? "Connect" : "Verbindung", NULL)){
static bool firstScan = true;
static bool scan = true;
static bool wait = false;
static vector<string> device;
static int selectedDevice;
static char error = 1;
static string gotBuffer = "";
static string fetchLine = "";
static string currentLine = "";
bool newContent = false;
bool newLine = false;
const string combo_preview_value = (device.size() == 0 ? (appLang == LANG::ENGLISH ? "-- No ports found --" : "-- Keine Ports gefunden --") : device[selectedDevice]);
if (device.size() == 0) ImGui::PushStyleColor(ImGuiCol_Text, 0xFF555555);
if (ImGui::BeginCombo("COM Port", combo_preview_value.c_str())) {
for (int i = 0; i < (int)device.size(); i++) {
const bool is_selected = selectedDevice == i;
if (ImGui::Selectable(device[i].c_str(), is_selected)) selectedDevice = i;
if (is_selected) ImGui::SetItemDefaultFocus();
}
ImGui::Separator();
static char mbuffer[64] = {0};
bool mtrue = ImGui::InputText("Manually specify port###MANPORT", mbuffer, sizeof(mbuffer), ImGuiInputTextFlags_EnterReturnsTrue);
ImGui::SameLine();
if (ImGui::Button("Ok###MANPORTBTN") || mtrue){
if (strlen(mbuffer) > 0) {
device.clear();
device.push_back(mbuffer);
scan = false;
}
}
ImGui::EndCombo();
}
if (device.size() == 0) ImGui::PopStyleColor();
ImGui::SameLine();
if (ImGui::Button("Rescan Ports") || ((time(NULL) % 32 == 0 || firstScan) && scan)) {
device.clear();
device.push_back("/dev/ttyUSB0");
}
firstScan = false;
if (!connected && ImGui::Button(appLang == LANG::ENGLISH ? "Connect" : "Verbinden")){
serial.closeDevice();
error = serial.openDevice(device[selectedDevice].c_str(), 9600);
restartDevice(serial);
}
if (connected && ImGui::Button(appLang == LANG::ENGLISH ? "Disconnect" : "Trennen")){
serial.closeDevice();
connected = false;
}
ImGui::SameLine();
ImGui::BeginDisabled(!connected);
if (ImGui::Button(appLang == LANG::ENGLISH ? "Restart SSUP" : "SSUP neustarten")){
restartDevice(serial);
}
ImGui::EndDisabled();
ImGui::Separator();
if (error == 1){
if (serial.isDeviceOpen()){
ImGui::PushStyleColor(ImGuiCol_Text, 0xFF00AA00);
ImGui::Text(appLang == LANG::ENGLISH ? "Connected" : "Verbunden");
connected = true;
config.eeprom_size = 16;
config.toc_size = 512;
} else {
ImGui::PushStyleColor(ImGuiCol_Text, 0xFF0000FF);
ImGui::Text(appLang == LANG::ENGLISH ? "Not connected" : "Nicht verbunden");
connected = false;
}
} else {
ImGui::PushStyleColor(ImGuiCol_Text, 0xFF0000FF);
ImGui::Text(appLang == LANG::ENGLISH ? "Error opening %s" : "Fehler beim öffnen von %s", device[selectedDevice].c_str());
connected = false;
}
ImGui::PopStyleColor();
if (serial.available()){
while (serial.available()){
static uint8_t got;
serial.readBytes(&got, 1);
if (got == 0xFA) wait = true;
else if (got == 0xFB) wait = false;
else {
gotBuffer.push_back((char)got);
newContent = true;
newLine = false;
if ((char)got == '\n' || (char)got == 0){
currentLine = fetchLine;
fetchLine = "";
newLine = true;
break;
} else fetchLine.push_back((char)got);
}
}
}
bool jsonError = false;
static int fetchedSettings = 0;
static string jsonErrorString;
if (newLine){
if (currentLine == "SSUP") serial.writeString("g");
else if (currentLine.find("!SYSINFO:") != string::npos){
string jsonRawData = cutJSON(currentLine);
jsonErrorString.clear();
Json jsonData = Json::parse(jsonRawData, jsonErrorString);
if (jsonErrorString.length() > 0) jsonError = true;
else {
config.firmware = jsonData["FIRMWARE"].int_value();
config.model = jsonData["MODEL"].int_value();
config.textx = jsonData["TEXTX"].int_value();
config.texty = jsonData["TEXTY"].int_value();
config.imagex = jsonData["IMAGEX"].int_value();
config.imagey = jsonData["IMAGEY"].int_value();
jsonError = false;
fetchedSettings++;
}
} else if (currentLine.find("!SETTINGS:") != string::npos){
string jsonRawData = cutJSON(currentLine);
jsonErrorString.clear();
Json jsonData = Json::parse(jsonRawData, jsonErrorString);
if (jsonErrorString.length() > 0) jsonError = true;
else {
config.eeprom_address = jsonData["EEPROM_ADDR"].int_value();
config.eeprom_size = jsonData["EEPROM_SIZE"].int_value();
config.screen_address = jsonData["SCREEN_ADDR"].int_value();
config.toc_size = jsonData["TOC_SIZE"].int_value();
config.threshhold = jsonData["THRESHHOLD"].int_value();
//config.= jsonData["PAGE"].int_value();
config.contrast = jsonData["CONTRAST"].int_value();
config.locked = (jsonData["LOCKED"].int_value() == 1);
jsonError = false;
fetchedSettings++;
}
}
}
if (connected){
if (ImGui::CollapsingHeader("SSUP Info:", ImGuiTreeNodeFlags_DefaultOpen)){
if (jsonError){
ImGui::PushStyleColor(ImGuiCol_Text, 0xFFAAAAAA);
ImGui::Text(appLang == LANG::ENGLISH ? "Error while parsing device JSON!\n%s" : "Fehler beim interpretieren des JSON!\n%s", jsonErrorString.c_str());
ImGui::PopStyleColor();
}
ImGui::SmallButton("?###LOCKED"); ImGui::SameLine();
ImGui::SetItemTooltip(appLang == LANG::ENGLISH ?
"SSUP locked state. In case of emergency one can lock the device.\nThat means it won't show anything until it is unlocked right here.\nThe calculator stays functional troughout.\nHow you lock SSUP is model specific. Please refer to the manual or to the help tab" :
"SSUP Sperrstatus. Im Notfall kann man den Spicker sperren.\nDas bedeutet, dass der Spicker nichts anzeigen wird und nicht bedienbar ist, solange er hier nicht ensperrt wurde.\nDer Taschenrechner bleibt dabei funktionstüchtig.\nWie man den Spicker sperrt ist modellspezifisch und steht im Handbuch und im 'Hilfe' Tab.");
ImGui::Text(appLang == LANG::ENGLISH ? "Locked:" : "Gesperrt:"); ImGui::SameLine();
if (config.locked){
ImGui::PushStyleColor(ImGuiCol_Text, 0xFF0000FF);
ImGui::Text(appLang == LANG::ENGLISH ? "Yes" : "Ja");
ImGui::PopStyleColor();
ImGui::SameLine();
if (ImGui::SmallButton(appLang == LANG::ENGLISH ? "Unlock" : "Entsperren")) {
serial.writeString("ug");
}
} else {
ImGui::PushStyleColor(ImGuiCol_Text, 0xFF00AA00);
ImGui::Text(appLang == LANG::ENGLISH ? "No" : "Nein");
ImGui::PopStyleColor();
}
if (fetchedSettings < 1) ImGui::Text(appLang == LANG::ENGLISH ? "Fetching..." : "Verarbeiten...");
else {
ImGui::Text("Firmware: %d", config.firmware);
ImGui::Text("Model: %d > %s", config.model, modelLookup[config.model - 1].c_str());
}
}
if (ImGui::CollapsingHeader("Nerd Info:")){
if (fetchedSettings < 2) ImGui::Text("Fetching...");
else {
ImGui::Text("Text Size: %dx%d", config.textx, config.texty);
ImGui::Text("Image Size: %dx%d", config.imagex, config.imagey);
ImGui::Text("EEPROM Size: %d Kilobytes", config.eeprom_size);
ImGui::Text("EEPROM Address: %d", config.eeprom_address);
ImGui::Text("Screen Address: %d", config.screen_address);
ImGui::Text("TOC Size: %d Bytes", config.toc_size);
ImGui::Text("Threshhold: %d", config.threshhold);
}
}
} else {
ImGui::PushStyleColor(ImGuiCol_Text, 0xFFAAAAAA);
ImGui::Text(appLang == LANG::ENGLISH ? "Please connect SSUP" : "Bitte SSUP verbinden");
ImGui::PopStyleColor();
}
if (ImGui::CollapsingHeader("Log:", ImGuiTreeNodeFlags_DefaultOpen)) {
ImGui::PushItemWidth(ImGui::GetWindowWidth()-20);
ImGui::BeginChild(ImGui::GetID("###LOGFRAME"), ImVec2(0, 150), ImGuiChildFlags_AutoResizeY | ImGuiChildFlags_Borders);
ImGui::Text(gotBuffer.c_str());
if (newContent) ImGui::SetScrollHereY(0.999f);
ImGui::EndChild();
ImGui::PopItemWidth();
ImGui::BeginDisabled(!connected);
static char commandBuffer[512];
bool sendCommand = ImGui::InputText(appLang == LANG::ENGLISH ? "Send###commandText" : "Senden###commandText", commandBuffer, sizeof(commandBuffer),
ImGuiInputTextFlags_EnterReturnsTrue | ImGuiInputTextFlags_ElideLeft);
ImGui::SameLine();
if (ImGui::Button(">>") || sendCommand) {
serial.writeString(commandBuffer);
commandBuffer[0] = 0;
}
ImGui::EndDisabled();
if (ImGui::Button(appLang == LANG::ENGLISH ? "Clear Log" : "Log löschen")) gotBuffer.clear();
}
ImGui::EndTabItem();
//ImGui::End();
}
}

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#include <cstdio>
#include <SDL2/SDL.h>
#include <bits/stdc++.h>
#include "imgui.h"
#include "ssup.h"
using namespace std;
void renderPageEditor(){
//static char buffer[4][22];
static uint8_t drawBuffer[32][16];
static char label[64];
static bool drawMode = false;
//::SetNextWindowPos(ImGui::GetMainViewport()->GetCenter(), ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
//ImGui::Begin("Page Editor", NULL,
// ImGuiWindowFlags_NoResize | ImGuiWindowFlags_AlwaysAutoResize | (drawMode ? ImGuiWindowFlags_NoMove : 0));
if (ImGui::BeginTabItem(appLang == LANG::ENGLISH ? "Page Editor" : "Seiten Editor")){
ImGui::BeginDisabled(currentPage <= 0);
if (ImGui::ArrowButton("###PREVPAGE", ImGuiDir_Left)) currentPage--;
ImGui::EndDisabled();
ImGui::SameLine();
ImGui::Text(appLang == LANG::ENGLISH ? "Page %d" : "Seite %d", currentPage);
ImGui::SameLine();
ImGui::BeginDisabled(currentPage >= (int)pages.size() - 1);
if (ImGui::ArrowButton("###NEXTPAGE", ImGuiDir_Right)) currentPage++;
ImGui::EndDisabled();
if (pages.size() == 0){
ImGui::SeparatorText("###emptyText");
ImGui::PushStyleColor(ImGuiCol_Text, 0xFF2222FF);
ImGui::Text(appLang == LANG::ENGLISH ?
"Empty page table!\nPlease add a text or image page to edit it here.\nIf you're stuck, read the guide:" :
"Keine Seiten!\nBitte füge Text oder Bild hinzu um diese hier zu bearbeiten\nWenn du bilfe brauchst, ließ die Anleitung:");
ImGui::PopStyleColor();
ImGui::TextLinkOpenURL(appLang == LANG::ENGLISH ? "here" : "hier", "https://weingardt.dev/ssup");
}
else if (pages[currentPage]->type == PAGETYPE::TEXT){
char** buffer = (char**)pages[currentPage]->data;
bool focus = false;
sprintf(label, "%dx%d Text", config.textx, config.texty);
ImGui::SeparatorText(label);
ImGui::PushStyleVarY(ImGuiStyleVar_ItemSpacing, 1);
for (int i = 0; i < config.texty; i++){
int length = config.textx - (int)strlen(buffer[i]);
sprintf(label, "###TEXTEDIT%d", i);
bool error = false;
for (int j = 0; j < (int)strlen(buffer[i]); j++) if (!isascii(buffer[i][j])) error = true;
if (error) ImGui::PushStyleColor(ImGuiCol_FrameBg, 0xFF0000FF);
ImGui::PushItemFlag(ImGuiTabItemFlags_Leading, focus);
ImGui::PushItemWidth(ImGui::CalcTextSize("a").x * (config.textx + 1));
if (ImGui::InputText(label, buffer[i], config.textx + 1, ImGuiInputTextFlags_EnterReturnsTrue)) focus = true;
ImGui::PopItemFlag();
ImGui::SameLine();
if (error) {
ImGui::PopStyleColor();
ImGui::Text(appLang == LANG::ENGLISH ? "Illegal Character!" : "Ungültiger Buchstabe!");
} else ImGui::Text(appLang == LANG::ENGLISH ? "%d char%s left" : "%d Buchstabe%s übrig", length, length == 1 ? "" : (appLang == LANG::ENGLISH ? "s" : "n"));
}
ImGui::PopStyleVar();
drawMode = false;
} else {
// REWORK!
sprintf(label, "%dx%d %s", config.imagex, config.imagey, appLang == LANG::ENGLISH ? "Image" : "Bild");
ImGui::SeparatorText(label);
const int SIZE = 4;
ImVec2 cursor = ImGui::GetCursorScreenPos();
ImVec2 size = ImVec2(128*SIZE, 32*SIZE);
ImVec2 mouse = ImGui::GetMousePos();
ImGui::Dummy(size);
ImDrawList* list = ImGui::GetWindowDrawList();
list->AddRectFilled(cursor, ImVec2(size.x + cursor.x, size.y + cursor.y), 0xFFFFFFFF);
list->AddRect(cursor, ImVec2(size.x + cursor.x, size.y + cursor.y), ImGui::GetColorU32(ImGui::GetStyleColorVec4(ImGuiCol_Border)));
for (int y = 0; y < 32; y++){
for (int x = 0; x < 128; x++){
if (((drawBuffer[y][x / 16] >> (x & 0b111)) & 1) == 1){
list->AddRectFilled(ImVec2(cursor.x + (x * SIZE), cursor.y + (y * SIZE)),
ImVec2(cursor.x + (x * SIZE) + SIZE, cursor.y + (y * SIZE) + SIZE), 0xFF000000);
}
}
}
ImVec2 mousePreview = ImVec2((int)((((int)mouse.x) / SIZE) * SIZE), (int)((((int)mouse.y) / 4) * 4));
if (mousePreview.x > cursor.x && mousePreview.x < size.x + cursor.x &&
mousePreview.y > cursor.y && mousePreview.y < size.y + cursor.y){
list->AddRectFilled(mousePreview, ImVec2(mousePreview.x + SIZE, mousePreview.y + SIZE) , 0x55000000);
//SDL_ShowCursor(false);
drawMode = true;
} else {
//SDL_ShowCursor(true);
drawMode = false;
}
//list->PushClipRect(cursor, ImVec2(size.x + cursor.x, size.y + cursor.y), true);
}
ImGui::EndTabItem();
//ImGui::End();
}
}

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#include <cstdio>
#include <SDL2/SDL.h>
#include <bits/stdc++.h>
#include "imgui.h"
#include "ssup.h"
using namespace std;
void renderHelpMenu(){
if (ImGui::BeginTabItem(appLang == LANG::ENGLISH ? "Help" : "Hilfe")){
ImGui::EndTabItem();
}
}

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imgui/imconfig.h

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imgui/imgui.h

860
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// dear imgui: Platform Backend for SDL2
// This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
// (Info: SDL2 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)
// (Prefer SDL 2.0.5+ for full feature support.)
// Implemented features:
// [X] Platform: Clipboard support.
// [X] Platform: Mouse support. Can discriminate Mouse/TouchScreen.
// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy SDL_SCANCODE_* values are obsolete since 1.87 and not supported since 1.91.5]
// [X] Platform: Gamepad support.
// [X] Platform: Mouse cursor shape and visibility (ImGuiBackendFlags_HasMouseCursors). Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
// [X] Platform: Basic IME support. App needs to call 'SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");' before SDL_CreateWindow()!.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// Learn about Dear ImGui:
// - FAQ https://dearimgui.com/faq
// - Getting Started https://dearimgui.com/getting-started
// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
// - Introduction, links and more at the top of imgui.cpp
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2025-04-09: Don't attempt to call SDL_CaptureMouse() on drivers where we don't call SDL_GetGlobalMouseState(). (#8561)
// 2025-03-21: Fill gamepad inputs and set ImGuiBackendFlags_HasGamepad regardless of ImGuiConfigFlags_NavEnableGamepad being set.
// 2025-03-10: When dealing with OEM keys, use scancodes instead of translated keycodes to choose ImGuiKey values. (#7136, #7201, #7206, #7306, #7670, #7672, #8468)
// 2025-02-26: Only start SDL_CaptureMouse() when mouse is being dragged, to mitigate issues with e.g.Linux debuggers not claiming capture back. (#6410, #3650)
// 2025-02-24: Avoid calling SDL_GetGlobalMouseState() when mouse is in relative mode.
// 2025-02-18: Added ImGuiMouseCursor_Wait and ImGuiMouseCursor_Progress mouse cursor support.
// 2025-02-10: Using SDL_OpenURL() in platform_io.Platform_OpenInShellFn handler.
// 2025-01-20: Made ImGui_ImplSDL2_SetGamepadMode(ImGui_ImplSDL2_GamepadMode_Manual) accept an empty array.
// 2024-10-24: Emscripten: from SDL 2.30.9, SDL_EVENT_MOUSE_WHEEL event doesn't require dividing by 100.0f.
// 2024-09-09: use SDL_Vulkan_GetDrawableSize() when available. (#7967, #3190)
// 2024-08-22: moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO:
// - io.GetClipboardTextFn -> platform_io.Platform_GetClipboardTextFn
// - io.SetClipboardTextFn -> platform_io.Platform_SetClipboardTextFn
// - io.PlatformOpenInShellFn -> platform_io.Platform_OpenInShellFn
// - io.PlatformSetImeDataFn -> platform_io.Platform_SetImeDataFn
// 2024-08-19: Storing SDL's Uint32 WindowID inside ImGuiViewport::PlatformHandle instead of SDL_Window*.
// 2024-08-19: ImGui_ImplSDL2_ProcessEvent() now ignores events intended for other SDL windows. (#7853)
// 2024-07-02: Emscripten: Added io.PlatformOpenInShellFn() handler for Emscripten versions.
// 2024-07-02: Update for io.SetPlatformImeDataFn() -> io.PlatformSetImeDataFn() renaming in main library.
// 2024-02-14: Inputs: Handle gamepad disconnection. Added ImGui_ImplSDL2_SetGamepadMode().
// 2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys, app back/forward keys.
// 2023-04-06: Inputs: Avoid calling SDL_StartTextInput()/SDL_StopTextInput() as they don't only pertain to IME. It's unclear exactly what their relation is to IME. (#6306)
// 2023-04-04: Inputs: Added support for io.AddMouseSourceEvent() to discriminate ImGuiMouseSource_Mouse/ImGuiMouseSource_TouchScreen. (#2702)
// 2023-02-23: Accept SDL_GetPerformanceCounter() not returning a monotonically increasing value. (#6189, #6114, #3644)
// 2023-02-07: Implement IME handler (io.SetPlatformImeDataFn will call SDL_SetTextInputRect()/SDL_StartTextInput()).
// 2023-02-07: *BREAKING CHANGE* Renamed this backend file from imgui_impl_sdl.cpp/.h to imgui_impl_sdl2.cpp/.h in prevision for the future release of SDL3.
// 2023-02-02: Avoid calling SDL_SetCursor() when cursor has not changed, as the function is surprisingly costly on Mac with latest SDL (may be fixed in next SDL version).
// 2023-02-02: Added support for SDL 2.0.18+ preciseX/preciseY mouse wheel data for smooth scrolling + Scaling X value on Emscripten (bug?). (#4019, #6096)
// 2023-02-02: Removed SDL_MOUSEWHEEL value clamping, as values seem correct in latest Emscripten. (#4019)
// 2023-02-01: Flipping SDL_MOUSEWHEEL 'wheel.x' value to match other backends and offer consistent horizontal scrolling direction. (#4019, #6096, #1463)
// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
// 2022-09-26: Inputs: Disable SDL 2.0.22 new "auto capture" (SDL_HINT_MOUSE_AUTO_CAPTURE) which prevents drag and drop across windows for multi-viewport support + don't capture when drag and dropping. (#5710)
// 2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported).
// 2022-03-22: Inputs: Fix mouse position issues when dragging outside of boundaries. SDL_CaptureMouse() erroneously still gives out LEAVE events when hovering OS decorations.
// 2022-03-22: Inputs: Added support for extra mouse buttons (SDL_BUTTON_X1/SDL_BUTTON_X2).
// 2022-02-04: Added SDL_Renderer* parameter to ImGui_ImplSDL2_InitForSDLRenderer(), so we can use SDL_GetRendererOutputSize() instead of SDL_GL_GetDrawableSize() when bound to a SDL_Renderer.
// 2022-01-26: Inputs: replaced short-lived io.AddKeyModsEvent() (added two weeks ago) with io.AddKeyEvent() using ImGuiKey_ModXXX flags. Sorry for the confusion.
// 2021-01-20: Inputs: calling new io.AddKeyAnalogEvent() for gamepad support, instead of writing directly to io.NavInputs[].
// 2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+).
// 2022-01-17: Inputs: always update key mods next and before key event (not in NewFrame) to fix input queue with very low framerates.
// 2022-01-12: Update mouse inputs using SDL_MOUSEMOTION/SDL_WINDOWEVENT_LEAVE + fallback to provide it when focused but not hovered/captured. More standard and will allow us to pass it to future input queue API.
// 2022-01-12: Maintain our own copy of MouseButtonsDown mask instead of using ImGui::IsAnyMouseDown() which will be obsoleted.
// 2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range.
// 2021-08-17: Calling io.AddFocusEvent() on SDL_WINDOWEVENT_FOCUS_GAINED/SDL_WINDOWEVENT_FOCUS_LOST.
// 2021-07-29: Inputs: MousePos is correctly reported when the host platform window is hovered but not focused (using SDL_GetMouseFocus() + SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, requires SDL 2.0.5+)
// 2021-06-29: *BREAKING CHANGE* Removed 'SDL_Window* window' parameter to ImGui_ImplSDL2_NewFrame() which was unnecessary.
// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
// 2021-03-22: Rework global mouse pos availability check listing supported platforms explicitly, effectively fixing mouse access on Raspberry Pi. (#2837, #3950)
// 2020-05-25: Misc: Report a zero display-size when window is minimized, to be consistent with other backends.
// 2020-02-20: Inputs: Fixed mapping for ImGuiKey_KeyPadEnter (using SDL_SCANCODE_KP_ENTER instead of SDL_SCANCODE_RETURN2).
// 2019-12-17: Inputs: On Wayland, use SDL_GetMouseState (because there is no global mouse state).
// 2019-12-05: Inputs: Added support for ImGuiMouseCursor_NotAllowed mouse cursor.
// 2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter.
// 2019-04-23: Inputs: Added support for SDL_GameController (if ImGuiConfigFlags_NavEnableGamepad is set by user application).
// 2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.
// 2018-12-21: Inputs: Workaround for Android/iOS which don't seem to handle focus related calls.
// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
// 2018-11-14: Changed the signature of ImGui_ImplSDL2_ProcessEvent() to take a 'const SDL_Event*'.
// 2018-08-01: Inputs: Workaround for Emscripten which doesn't seem to handle focus related calls.
// 2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor.
// 2018-06-08: Misc: Extracted imgui_impl_sdl.cpp/.h away from the old combined SDL2+OpenGL/Vulkan examples.
// 2018-06-08: Misc: ImGui_ImplSDL2_InitForOpenGL() now takes a SDL_GLContext parameter.
// 2018-05-09: Misc: Fixed clipboard paste memory leak (we didn't call SDL_FreeMemory on the data returned by SDL_GetClipboardText).
// 2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag.
// 2018-02-16: Inputs: Added support for mouse cursors, honoring ImGui::GetMouseCursor() value.
// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
// 2018-02-05: Misc: Using SDL_GetPerformanceCounter() instead of SDL_GetTicks() to be able to handle very high framerate (1000+ FPS).
// 2018-02-05: Inputs: Keyboard mapping is using scancodes everywhere instead of a confusing mixture of keycodes and scancodes.
// 2018-01-20: Inputs: Added Horizontal Mouse Wheel support.
// 2018-01-19: Inputs: When available (SDL 2.0.4+) using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging. Otherwise (SDL 2.0.3 and before) testing for SDL_WINDOW_INPUT_FOCUS instead of SDL_WINDOW_MOUSE_FOCUS.
// 2018-01-18: Inputs: Added mapping for ImGuiKey_Insert.
// 2017-08-25: Inputs: MousePos set to -FLT_MAX,-FLT_MAX when mouse is unavailable/missing (instead of -1,-1).
// 2016-10-15: Misc: Added a void* user_data parameter to Clipboard function handlers.
#include "imgui.h"
#ifndef IMGUI_DISABLE
#include "imgui_impl_sdl2.h"
// Clang warnings with -Weverything
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wimplicit-int-float-conversion" // warning: implicit conversion from 'xxx' to 'float' may lose precision
#endif
// SDL
#include <SDL.h>
#include <SDL_syswm.h>
#include <stdio.h> // for snprintf()
#ifdef __APPLE__
#include <TargetConditionals.h>
#endif
#ifdef __EMSCRIPTEN__
#include <emscripten/em_js.h>
#endif
#if SDL_VERSION_ATLEAST(2,0,4) && !defined(__EMSCRIPTEN__) && !defined(__ANDROID__) && !(defined(__APPLE__) && TARGET_OS_IOS) && !defined(__amigaos4__)
#define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE 1
#else
#define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE 0
#endif
#define SDL_HAS_VULKAN SDL_VERSION_ATLEAST(2,0,6)
#define SDL_HAS_OPEN_URL SDL_VERSION_ATLEAST(2,0,14)
#if SDL_HAS_VULKAN
#include <SDL_vulkan.h>
#endif
// SDL Data
struct ImGui_ImplSDL2_Data
{
SDL_Window* Window;
Uint32 WindowID;
SDL_Renderer* Renderer;
Uint64 Time;
char* ClipboardTextData;
char BackendPlatformName[48];
// Mouse handling
Uint32 MouseWindowID;
int MouseButtonsDown;
SDL_Cursor* MouseCursors[ImGuiMouseCursor_COUNT];
SDL_Cursor* MouseLastCursor;
int MouseLastLeaveFrame;
bool MouseCanUseGlobalState;
bool MouseCanUseCapture;
// Gamepad handling
ImVector<SDL_GameController*> Gamepads;
ImGui_ImplSDL2_GamepadMode GamepadMode;
bool WantUpdateGamepadsList;
ImGui_ImplSDL2_Data() { memset((void*)this, 0, sizeof(*this)); }
};
// Backend data stored in io.BackendPlatformUserData to allow support for multiple Dear ImGui contexts
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
// FIXME: multi-context support is not well tested and probably dysfunctional in this backend.
// FIXME: some shared resources (mouse cursor shape, gamepad) are mishandled when using multi-context.
static ImGui_ImplSDL2_Data* ImGui_ImplSDL2_GetBackendData()
{
return ImGui::GetCurrentContext() ? (ImGui_ImplSDL2_Data*)ImGui::GetIO().BackendPlatformUserData : nullptr;
}
// Functions
static const char* ImGui_ImplSDL2_GetClipboardText(ImGuiContext*)
{
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
if (bd->ClipboardTextData)
SDL_free(bd->ClipboardTextData);
bd->ClipboardTextData = SDL_GetClipboardText();
return bd->ClipboardTextData;
}
static void ImGui_ImplSDL2_SetClipboardText(ImGuiContext*, const char* text)
{
SDL_SetClipboardText(text);
}
// Note: native IME will only display if user calls SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1") _before_ SDL_CreateWindow().
static void ImGui_ImplSDL2_PlatformSetImeData(ImGuiContext*, ImGuiViewport*, ImGuiPlatformImeData* data)
{
if (data->WantVisible)
{
SDL_Rect r;
r.x = (int)data->InputPos.x;
r.y = (int)data->InputPos.y;
r.w = 1;
r.h = (int)data->InputLineHeight;
SDL_SetTextInputRect(&r);
}
}
// Not static to allow third-party code to use that if they want to (but undocumented)
ImGuiKey ImGui_ImplSDL2_KeyEventToImGuiKey(SDL_Keycode keycode, SDL_Scancode scancode);
ImGuiKey ImGui_ImplSDL2_KeyEventToImGuiKey(SDL_Keycode keycode, SDL_Scancode scancode)
{
switch (keycode)
{
case SDLK_TAB: return ImGuiKey_Tab;
case SDLK_LEFT: return ImGuiKey_LeftArrow;
case SDLK_RIGHT: return ImGuiKey_RightArrow;
case SDLK_UP: return ImGuiKey_UpArrow;
case SDLK_DOWN: return ImGuiKey_DownArrow;
case SDLK_PAGEUP: return ImGuiKey_PageUp;
case SDLK_PAGEDOWN: return ImGuiKey_PageDown;
case SDLK_HOME: return ImGuiKey_Home;
case SDLK_END: return ImGuiKey_End;
case SDLK_INSERT: return ImGuiKey_Insert;
case SDLK_DELETE: return ImGuiKey_Delete;
case SDLK_BACKSPACE: return ImGuiKey_Backspace;
case SDLK_SPACE: return ImGuiKey_Space;
case SDLK_RETURN: return ImGuiKey_Enter;
case SDLK_ESCAPE: return ImGuiKey_Escape;
//case SDLK_QUOTE: return ImGuiKey_Apostrophe;
case SDLK_COMMA: return ImGuiKey_Comma;
//case SDLK_MINUS: return ImGuiKey_Minus;
case SDLK_PERIOD: return ImGuiKey_Period;
//case SDLK_SLASH: return ImGuiKey_Slash;
case SDLK_SEMICOLON: return ImGuiKey_Semicolon;
//case SDLK_EQUALS: return ImGuiKey_Equal;
//case SDLK_LEFTBRACKET: return ImGuiKey_LeftBracket;
//case SDLK_BACKSLASH: return ImGuiKey_Backslash;
//case SDLK_RIGHTBRACKET: return ImGuiKey_RightBracket;
//case SDLK_BACKQUOTE: return ImGuiKey_GraveAccent;
case SDLK_CAPSLOCK: return ImGuiKey_CapsLock;
case SDLK_SCROLLLOCK: return ImGuiKey_ScrollLock;
case SDLK_NUMLOCKCLEAR: return ImGuiKey_NumLock;
case SDLK_PRINTSCREEN: return ImGuiKey_PrintScreen;
case SDLK_PAUSE: return ImGuiKey_Pause;
case SDLK_KP_0: return ImGuiKey_Keypad0;
case SDLK_KP_1: return ImGuiKey_Keypad1;
case SDLK_KP_2: return ImGuiKey_Keypad2;
case SDLK_KP_3: return ImGuiKey_Keypad3;
case SDLK_KP_4: return ImGuiKey_Keypad4;
case SDLK_KP_5: return ImGuiKey_Keypad5;
case SDLK_KP_6: return ImGuiKey_Keypad6;
case SDLK_KP_7: return ImGuiKey_Keypad7;
case SDLK_KP_8: return ImGuiKey_Keypad8;
case SDLK_KP_9: return ImGuiKey_Keypad9;
case SDLK_KP_PERIOD: return ImGuiKey_KeypadDecimal;
case SDLK_KP_DIVIDE: return ImGuiKey_KeypadDivide;
case SDLK_KP_MULTIPLY: return ImGuiKey_KeypadMultiply;
case SDLK_KP_MINUS: return ImGuiKey_KeypadSubtract;
case SDLK_KP_PLUS: return ImGuiKey_KeypadAdd;
case SDLK_KP_ENTER: return ImGuiKey_KeypadEnter;
case SDLK_KP_EQUALS: return ImGuiKey_KeypadEqual;
case SDLK_LCTRL: return ImGuiKey_LeftCtrl;
case SDLK_LSHIFT: return ImGuiKey_LeftShift;
case SDLK_LALT: return ImGuiKey_LeftAlt;
case SDLK_LGUI: return ImGuiKey_LeftSuper;
case SDLK_RCTRL: return ImGuiKey_RightCtrl;
case SDLK_RSHIFT: return ImGuiKey_RightShift;
case SDLK_RALT: return ImGuiKey_RightAlt;
case SDLK_RGUI: return ImGuiKey_RightSuper;
case SDLK_APPLICATION: return ImGuiKey_Menu;
case SDLK_0: return ImGuiKey_0;
case SDLK_1: return ImGuiKey_1;
case SDLK_2: return ImGuiKey_2;
case SDLK_3: return ImGuiKey_3;
case SDLK_4: return ImGuiKey_4;
case SDLK_5: return ImGuiKey_5;
case SDLK_6: return ImGuiKey_6;
case SDLK_7: return ImGuiKey_7;
case SDLK_8: return ImGuiKey_8;
case SDLK_9: return ImGuiKey_9;
case SDLK_a: return ImGuiKey_A;
case SDLK_b: return ImGuiKey_B;
case SDLK_c: return ImGuiKey_C;
case SDLK_d: return ImGuiKey_D;
case SDLK_e: return ImGuiKey_E;
case SDLK_f: return ImGuiKey_F;
case SDLK_g: return ImGuiKey_G;
case SDLK_h: return ImGuiKey_H;
case SDLK_i: return ImGuiKey_I;
case SDLK_j: return ImGuiKey_J;
case SDLK_k: return ImGuiKey_K;
case SDLK_l: return ImGuiKey_L;
case SDLK_m: return ImGuiKey_M;
case SDLK_n: return ImGuiKey_N;
case SDLK_o: return ImGuiKey_O;
case SDLK_p: return ImGuiKey_P;
case SDLK_q: return ImGuiKey_Q;
case SDLK_r: return ImGuiKey_R;
case SDLK_s: return ImGuiKey_S;
case SDLK_t: return ImGuiKey_T;
case SDLK_u: return ImGuiKey_U;
case SDLK_v: return ImGuiKey_V;
case SDLK_w: return ImGuiKey_W;
case SDLK_x: return ImGuiKey_X;
case SDLK_y: return ImGuiKey_Y;
case SDLK_z: return ImGuiKey_Z;
case SDLK_F1: return ImGuiKey_F1;
case SDLK_F2: return ImGuiKey_F2;
case SDLK_F3: return ImGuiKey_F3;
case SDLK_F4: return ImGuiKey_F4;
case SDLK_F5: return ImGuiKey_F5;
case SDLK_F6: return ImGuiKey_F6;
case SDLK_F7: return ImGuiKey_F7;
case SDLK_F8: return ImGuiKey_F8;
case SDLK_F9: return ImGuiKey_F9;
case SDLK_F10: return ImGuiKey_F10;
case SDLK_F11: return ImGuiKey_F11;
case SDLK_F12: return ImGuiKey_F12;
case SDLK_F13: return ImGuiKey_F13;
case SDLK_F14: return ImGuiKey_F14;
case SDLK_F15: return ImGuiKey_F15;
case SDLK_F16: return ImGuiKey_F16;
case SDLK_F17: return ImGuiKey_F17;
case SDLK_F18: return ImGuiKey_F18;
case SDLK_F19: return ImGuiKey_F19;
case SDLK_F20: return ImGuiKey_F20;
case SDLK_F21: return ImGuiKey_F21;
case SDLK_F22: return ImGuiKey_F22;
case SDLK_F23: return ImGuiKey_F23;
case SDLK_F24: return ImGuiKey_F24;
case SDLK_AC_BACK: return ImGuiKey_AppBack;
case SDLK_AC_FORWARD: return ImGuiKey_AppForward;
default: break;
}
// Fallback to scancode
switch (scancode)
{
case SDL_SCANCODE_GRAVE: return ImGuiKey_GraveAccent;
case SDL_SCANCODE_MINUS: return ImGuiKey_Minus;
case SDL_SCANCODE_EQUALS: return ImGuiKey_Equal;
case SDL_SCANCODE_LEFTBRACKET: return ImGuiKey_LeftBracket;
case SDL_SCANCODE_RIGHTBRACKET: return ImGuiKey_RightBracket;
case SDL_SCANCODE_NONUSBACKSLASH: return ImGuiKey_Oem102;
case SDL_SCANCODE_BACKSLASH: return ImGuiKey_Backslash;
case SDL_SCANCODE_SEMICOLON: return ImGuiKey_Semicolon;
case SDL_SCANCODE_APOSTROPHE: return ImGuiKey_Apostrophe;
case SDL_SCANCODE_COMMA: return ImGuiKey_Comma;
case SDL_SCANCODE_PERIOD: return ImGuiKey_Period;
case SDL_SCANCODE_SLASH: return ImGuiKey_Slash;
default: break;
}
return ImGuiKey_None;
}
static void ImGui_ImplSDL2_UpdateKeyModifiers(SDL_Keymod sdl_key_mods)
{
ImGuiIO& io = ImGui::GetIO();
io.AddKeyEvent(ImGuiMod_Ctrl, (sdl_key_mods & KMOD_CTRL) != 0);
io.AddKeyEvent(ImGuiMod_Shift, (sdl_key_mods & KMOD_SHIFT) != 0);
io.AddKeyEvent(ImGuiMod_Alt, (sdl_key_mods & KMOD_ALT) != 0);
io.AddKeyEvent(ImGuiMod_Super, (sdl_key_mods & KMOD_GUI) != 0);
}
static ImGuiViewport* ImGui_ImplSDL2_GetViewportForWindowID(Uint32 window_id)
{
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
return (window_id == bd->WindowID) ? ImGui::GetMainViewport() : nullptr;
}
// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
// If you have multiple SDL events and some of them are not meant to be used by dear imgui, you may need to filter events based on their windowID field.
bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
{
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDL2_Init()?");
ImGuiIO& io = ImGui::GetIO();
switch (event->type)
{
case SDL_MOUSEMOTION:
{
if (ImGui_ImplSDL2_GetViewportForWindowID(event->motion.windowID) == nullptr)
return false;
ImVec2 mouse_pos((float)event->motion.x, (float)event->motion.y);
io.AddMouseSourceEvent(event->motion.which == SDL_TOUCH_MOUSEID ? ImGuiMouseSource_TouchScreen : ImGuiMouseSource_Mouse);
io.AddMousePosEvent(mouse_pos.x, mouse_pos.y);
return true;
}
case SDL_MOUSEWHEEL:
{
if (ImGui_ImplSDL2_GetViewportForWindowID(event->wheel.windowID) == nullptr)
return false;
//IMGUI_DEBUG_LOG("wheel %.2f %.2f, precise %.2f %.2f\n", (float)event->wheel.x, (float)event->wheel.y, event->wheel.preciseX, event->wheel.preciseY);
#if SDL_VERSION_ATLEAST(2,0,18) // If this fails to compile on Emscripten: update to latest Emscripten!
float wheel_x = -event->wheel.preciseX;
float wheel_y = event->wheel.preciseY;
#else
float wheel_x = -(float)event->wheel.x;
float wheel_y = (float)event->wheel.y;
#endif
#if defined(__EMSCRIPTEN__) && !SDL_VERSION_ATLEAST(2,31,0)
wheel_x /= 100.0f;
#endif
io.AddMouseSourceEvent(event->wheel.which == SDL_TOUCH_MOUSEID ? ImGuiMouseSource_TouchScreen : ImGuiMouseSource_Mouse);
io.AddMouseWheelEvent(wheel_x, wheel_y);
return true;
}
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
{
if (ImGui_ImplSDL2_GetViewportForWindowID(event->button.windowID) == nullptr)
return false;
int mouse_button = -1;
if (event->button.button == SDL_BUTTON_LEFT) { mouse_button = 0; }
if (event->button.button == SDL_BUTTON_RIGHT) { mouse_button = 1; }
if (event->button.button == SDL_BUTTON_MIDDLE) { mouse_button = 2; }
if (event->button.button == SDL_BUTTON_X1) { mouse_button = 3; }
if (event->button.button == SDL_BUTTON_X2) { mouse_button = 4; }
if (mouse_button == -1)
break;
io.AddMouseSourceEvent(event->button.which == SDL_TOUCH_MOUSEID ? ImGuiMouseSource_TouchScreen : ImGuiMouseSource_Mouse);
io.AddMouseButtonEvent(mouse_button, (event->type == SDL_MOUSEBUTTONDOWN));
bd->MouseButtonsDown = (event->type == SDL_MOUSEBUTTONDOWN) ? (bd->MouseButtonsDown | (1 << mouse_button)) : (bd->MouseButtonsDown & ~(1 << mouse_button));
return true;
}
case SDL_TEXTINPUT:
{
if (ImGui_ImplSDL2_GetViewportForWindowID(event->text.windowID) == nullptr)
return false;
io.AddInputCharactersUTF8(event->text.text);
return true;
}
case SDL_KEYDOWN:
case SDL_KEYUP:
{
if (ImGui_ImplSDL2_GetViewportForWindowID(event->key.windowID) == nullptr)
return false;
ImGui_ImplSDL2_UpdateKeyModifiers((SDL_Keymod)event->key.keysym.mod);
//IMGUI_DEBUG_LOG("SDL_KEY_%s : key=%d ('%s'), scancode=%d ('%s'), mod=%X\n",
// (event->type == SDL_KEYDOWN) ? "DOWN" : "UP ", event->key.keysym.sym, SDL_GetKeyName(event->key.keysym.sym), event->key.keysym.scancode, SDL_GetScancodeName(event->key.keysym.scancode), event->key.keysym.mod);
ImGuiKey key = ImGui_ImplSDL2_KeyEventToImGuiKey(event->key.keysym.sym, event->key.keysym.scancode);
io.AddKeyEvent(key, (event->type == SDL_KEYDOWN));
io.SetKeyEventNativeData(key, event->key.keysym.sym, event->key.keysym.scancode, event->key.keysym.scancode); // To support legacy indexing (<1.87 user code). Legacy backend uses SDLK_*** as indices to IsKeyXXX() functions.
return true;
}
case SDL_WINDOWEVENT:
{
if (ImGui_ImplSDL2_GetViewportForWindowID(event->window.windowID) == nullptr)
return false;
// - When capturing mouse, SDL will send a bunch of conflicting LEAVE/ENTER event on every mouse move, but the final ENTER tends to be right.
// - However we won't get a correct LEAVE event for a captured window.
// - In some cases, when detaching a window from main viewport SDL may send SDL_WINDOWEVENT_ENTER one frame too late,
// causing SDL_WINDOWEVENT_LEAVE on previous frame to interrupt drag operation by clear mouse position. This is why
// we delay process the SDL_WINDOWEVENT_LEAVE events by one frame. See issue #5012 for details.
Uint8 window_event = event->window.event;
if (window_event == SDL_WINDOWEVENT_ENTER)
{
bd->MouseWindowID = event->window.windowID;
bd->MouseLastLeaveFrame = 0;
}
if (window_event == SDL_WINDOWEVENT_LEAVE)
bd->MouseLastLeaveFrame = ImGui::GetFrameCount() + 1;
if (window_event == SDL_WINDOWEVENT_FOCUS_GAINED)
io.AddFocusEvent(true);
else if (event->window.event == SDL_WINDOWEVENT_FOCUS_LOST)
io.AddFocusEvent(false);
return true;
}
case SDL_CONTROLLERDEVICEADDED:
case SDL_CONTROLLERDEVICEREMOVED:
{
bd->WantUpdateGamepadsList = true;
return true;
}
}
return false;
}
#ifdef __EMSCRIPTEN__
EM_JS(void, ImGui_ImplSDL2_EmscriptenOpenURL, (char const* url), { url = url ? UTF8ToString(url) : null; if (url) window.open(url, '_blank'); });
#endif
static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer, void* sdl_gl_context)
{
ImGuiIO& io = ImGui::GetIO();
IMGUI_CHECKVERSION();
IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
// Obtain compiled and runtime versions
SDL_version ver_compiled;
SDL_version ver_runtime;
SDL_VERSION(&ver_compiled);
SDL_GetVersion(&ver_runtime);
// Setup backend capabilities flags
ImGui_ImplSDL2_Data* bd = IM_NEW(ImGui_ImplSDL2_Data)();
snprintf(bd->BackendPlatformName, sizeof(bd->BackendPlatformName), "imgui_impl_sdl2 (%u.%u.%u, %u.%u.%u)",
ver_compiled.major, ver_compiled.minor, ver_compiled.patch, ver_runtime.major, ver_runtime.minor, ver_runtime.patch);
io.BackendPlatformUserData = (void*)bd;
io.BackendPlatformName = bd->BackendPlatformName;
io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)
io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)
bd->Window = window;
bd->WindowID = SDL_GetWindowID(window);
bd->Renderer = renderer;
// Check and store if we are on a SDL backend that supports SDL_GetGlobalMouseState() and SDL_CaptureMouse()
// ("wayland" and "rpi" don't support it, but we chose to use a white-list instead of a black-list)
bd->MouseCanUseGlobalState = false;
bd->MouseCanUseCapture = false;
#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE
const char* sdl_backend = SDL_GetCurrentVideoDriver();
const char* capture_and_global_state_whitelist[] = { "windows", "cocoa", "x11", "DIVE", "VMAN" };
for (const char* item : capture_and_global_state_whitelist)
if (strncmp(sdl_backend, item, strlen(item)) == 0)
bd->MouseCanUseGlobalState = bd->MouseCanUseCapture = true;
#endif
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
platform_io.Platform_SetClipboardTextFn = ImGui_ImplSDL2_SetClipboardText;
platform_io.Platform_GetClipboardTextFn = ImGui_ImplSDL2_GetClipboardText;
platform_io.Platform_ClipboardUserData = nullptr;
platform_io.Platform_SetImeDataFn = ImGui_ImplSDL2_PlatformSetImeData;
#ifdef __EMSCRIPTEN__
platform_io.Platform_OpenInShellFn = [](ImGuiContext*, const char* url) { ImGui_ImplSDL2_EmscriptenOpenURL(url); return true; };
#elif SDL_HAS_OPEN_URL
platform_io.Platform_OpenInShellFn = [](ImGuiContext*, const char* url) { return SDL_OpenURL(url) == 0; };
#endif
// Gamepad handling
bd->GamepadMode = ImGui_ImplSDL2_GamepadMode_AutoFirst;
bd->WantUpdateGamepadsList = true;
// Load mouse cursors
bd->MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
bd->MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS);
bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE);
bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW);
bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE);
bd->MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);
bd->MouseCursors[ImGuiMouseCursor_Wait] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_WAIT);
bd->MouseCursors[ImGuiMouseCursor_Progress] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_WAITARROW);
bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO);
// Set platform dependent data in viewport
// Our mouse update function expect PlatformHandle to be filled for the main viewport
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
main_viewport->PlatformHandle = (void*)(intptr_t)bd->WindowID;
main_viewport->PlatformHandleRaw = nullptr;
SDL_SysWMinfo info;
SDL_VERSION(&info.version);
if (SDL_GetWindowWMInfo(window, &info))
{
#if defined(SDL_VIDEO_DRIVER_WINDOWS)
main_viewport->PlatformHandleRaw = (void*)info.info.win.window;
#elif defined(__APPLE__) && defined(SDL_VIDEO_DRIVER_COCOA)
main_viewport->PlatformHandleRaw = (void*)info.info.cocoa.window;
#endif
}
// From 2.0.5: Set SDL hint to receive mouse click events on window focus, otherwise SDL doesn't emit the event.
// Without this, when clicking to gain focus, our widgets wouldn't activate even though they showed as hovered.
// (This is unfortunately a global SDL setting, so enabling it might have a side-effect on your application.
// It is unlikely to make a difference, but if your app absolutely needs to ignore the initial on-focus click:
// you can ignore SDL_MOUSEBUTTONDOWN events coming right after a SDL_WINDOWEVENT_FOCUS_GAINED)
#ifdef SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH
SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1");
#endif
// From 2.0.18: Enable native IME.
// IMPORTANT: This is used at the time of SDL_CreateWindow() so this will only affects secondary windows, if any.
// For the main window to be affected, your application needs to call this manually before calling SDL_CreateWindow().
#ifdef SDL_HINT_IME_SHOW_UI
SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");
#endif
// From 2.0.22: Disable auto-capture, this is preventing drag and drop across multiple windows (see #5710)
#ifdef SDL_HINT_MOUSE_AUTO_CAPTURE
SDL_SetHint(SDL_HINT_MOUSE_AUTO_CAPTURE, "0");
#endif
(void)sdl_gl_context; // Unused in 'master' branch.
return true;
}
bool ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context)
{
return ImGui_ImplSDL2_Init(window, nullptr, sdl_gl_context);
}
bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window)
{
#if !SDL_HAS_VULKAN
IM_ASSERT(0 && "Unsupported");
#endif
return ImGui_ImplSDL2_Init(window, nullptr, nullptr);
}
bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window)
{
#if !defined(_WIN32)
IM_ASSERT(0 && "Unsupported");
#endif
return ImGui_ImplSDL2_Init(window, nullptr, nullptr);
}
bool ImGui_ImplSDL2_InitForMetal(SDL_Window* window)
{
return ImGui_ImplSDL2_Init(window, nullptr, nullptr);
}
bool ImGui_ImplSDL2_InitForSDLRenderer(SDL_Window* window, SDL_Renderer* renderer)
{
return ImGui_ImplSDL2_Init(window, renderer, nullptr);
}
bool ImGui_ImplSDL2_InitForOther(SDL_Window* window)
{
return ImGui_ImplSDL2_Init(window, nullptr, nullptr);
}
static void ImGui_ImplSDL2_CloseGamepads();
void ImGui_ImplSDL2_Shutdown()
{
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
IM_ASSERT(bd != nullptr && "No platform backend to shutdown, or already shutdown?");
ImGuiIO& io = ImGui::GetIO();
if (bd->ClipboardTextData)
SDL_free(bd->ClipboardTextData);
for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
SDL_FreeCursor(bd->MouseCursors[cursor_n]);
ImGui_ImplSDL2_CloseGamepads();
io.BackendPlatformName = nullptr;
io.BackendPlatformUserData = nullptr;
io.BackendFlags &= ~(ImGuiBackendFlags_HasMouseCursors | ImGuiBackendFlags_HasSetMousePos | ImGuiBackendFlags_HasGamepad);
IM_DELETE(bd);
}
static void ImGui_ImplSDL2_UpdateMouseData()
{
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
ImGuiIO& io = ImGui::GetIO();
// We forward mouse input when hovered or captured (via SDL_MOUSEMOTION) or when focused (below)
#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE
// - SDL_CaptureMouse() let the OS know e.g. that our drags can extend outside of parent boundaries (we want updated position) and shouldn't trigger other operations outside.
// - Debuggers under Linux tends to leave captured mouse on break, which may be very inconvenient, so to mitigate the issue we wait until mouse has moved to begin capture.
if (bd->MouseCanUseCapture)
{
bool want_capture = false;
for (int button_n = 0; button_n < ImGuiMouseButton_COUNT && !want_capture; button_n++)
if (ImGui::IsMouseDragging(button_n, 1.0f))
want_capture = true;
SDL_CaptureMouse(want_capture ? SDL_TRUE : SDL_FALSE);
}
SDL_Window* focused_window = SDL_GetKeyboardFocus();
const bool is_app_focused = (bd->Window == focused_window);
#else
const bool is_app_focused = (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_INPUT_FOCUS) != 0; // SDL 2.0.3 and non-windowed systems: single-viewport only
#endif
if (is_app_focused)
{
// (Optional) Set OS mouse position from Dear ImGui if requested (rarely used, only when io.ConfigNavMoveSetMousePos is enabled by user)
if (io.WantSetMousePos)
SDL_WarpMouseInWindow(bd->Window, (int)io.MousePos.x, (int)io.MousePos.y);
// (Optional) Fallback to provide mouse position when focused (SDL_MOUSEMOTION already provides this when hovered or captured)
const bool is_relative_mouse_mode = SDL_GetRelativeMouseMode() != 0;
if (bd->MouseCanUseGlobalState && bd->MouseButtonsDown == 0 && !is_relative_mouse_mode)
{
// Single-viewport mode: mouse position in client window coordinates (io.MousePos is (0,0) when the mouse is on the upper-left corner of the app window)
int window_x, window_y, mouse_x_global, mouse_y_global;
SDL_GetGlobalMouseState(&mouse_x_global, &mouse_y_global);
SDL_GetWindowPosition(bd->Window, &window_x, &window_y);
io.AddMousePosEvent((float)(mouse_x_global - window_x), (float)(mouse_y_global - window_y));
}
}
}
static void ImGui_ImplSDL2_UpdateMouseCursor()
{
ImGuiIO& io = ImGui::GetIO();
if (io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange)
return;
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
if (io.MouseDrawCursor || imgui_cursor == ImGuiMouseCursor_None)
{
// Hide OS mouse cursor if imgui is drawing it or if it wants no cursor
SDL_ShowCursor(SDL_FALSE);
}
else
{
// Show OS mouse cursor
SDL_Cursor* expected_cursor = bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow];
if (bd->MouseLastCursor != expected_cursor)
{
SDL_SetCursor(expected_cursor); // SDL function doesn't have an early out (see #6113)
bd->MouseLastCursor = expected_cursor;
}
SDL_ShowCursor(SDL_TRUE);
}
}
static void ImGui_ImplSDL2_CloseGamepads()
{
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
if (bd->GamepadMode != ImGui_ImplSDL2_GamepadMode_Manual)
for (SDL_GameController* gamepad : bd->Gamepads)
SDL_GameControllerClose(gamepad);
bd->Gamepads.resize(0);
}
void ImGui_ImplSDL2_SetGamepadMode(ImGui_ImplSDL2_GamepadMode mode, struct _SDL_GameController** manual_gamepads_array, int manual_gamepads_count)
{
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
ImGui_ImplSDL2_CloseGamepads();
if (mode == ImGui_ImplSDL2_GamepadMode_Manual)
{
IM_ASSERT(manual_gamepads_array != nullptr || manual_gamepads_count <= 0);
for (int n = 0; n < manual_gamepads_count; n++)
bd->Gamepads.push_back(manual_gamepads_array[n]);
}
else
{
IM_ASSERT(manual_gamepads_array == nullptr && manual_gamepads_count <= 0);
bd->WantUpdateGamepadsList = true;
}
bd->GamepadMode = mode;
}
static void ImGui_ImplSDL2_UpdateGamepadButton(ImGui_ImplSDL2_Data* bd, ImGuiIO& io, ImGuiKey key, SDL_GameControllerButton button_no)
{
bool merged_value = false;
for (SDL_GameController* gamepad : bd->Gamepads)
merged_value |= SDL_GameControllerGetButton(gamepad, button_no) != 0;
io.AddKeyEvent(key, merged_value);
}
static inline float Saturate(float v) { return v < 0.0f ? 0.0f : v > 1.0f ? 1.0f : v; }
static void ImGui_ImplSDL2_UpdateGamepadAnalog(ImGui_ImplSDL2_Data* bd, ImGuiIO& io, ImGuiKey key, SDL_GameControllerAxis axis_no, float v0, float v1)
{
float merged_value = 0.0f;
for (SDL_GameController* gamepad : bd->Gamepads)
{
float vn = Saturate((float)(SDL_GameControllerGetAxis(gamepad, axis_no) - v0) / (float)(v1 - v0));
if (merged_value < vn)
merged_value = vn;
}
io.AddKeyAnalogEvent(key, merged_value > 0.1f, merged_value);
}
static void ImGui_ImplSDL2_UpdateGamepads()
{
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
ImGuiIO& io = ImGui::GetIO();
// Update list of controller(s) to use
if (bd->WantUpdateGamepadsList && bd->GamepadMode != ImGui_ImplSDL2_GamepadMode_Manual)
{
ImGui_ImplSDL2_CloseGamepads();
int joystick_count = SDL_NumJoysticks();
for (int n = 0; n < joystick_count; n++)
if (SDL_IsGameController(n))
if (SDL_GameController* gamepad = SDL_GameControllerOpen(n))
{
bd->Gamepads.push_back(gamepad);
if (bd->GamepadMode == ImGui_ImplSDL2_GamepadMode_AutoFirst)
break;
}
bd->WantUpdateGamepadsList = false;
}
io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
if (bd->Gamepads.Size == 0)
return;
io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
// Update gamepad inputs
const int thumb_dead_zone = 8000; // SDL_gamecontroller.h suggests using this value.
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadStart, SDL_CONTROLLER_BUTTON_START);
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadBack, SDL_CONTROLLER_BUTTON_BACK);
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceLeft, SDL_CONTROLLER_BUTTON_X); // Xbox X, PS Square
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceRight, SDL_CONTROLLER_BUTTON_B); // Xbox B, PS Circle
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceUp, SDL_CONTROLLER_BUTTON_Y); // Xbox Y, PS Triangle
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceDown, SDL_CONTROLLER_BUTTON_A); // Xbox A, PS Cross
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadLeft, SDL_CONTROLLER_BUTTON_DPAD_LEFT);
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadRight, SDL_CONTROLLER_BUTTON_DPAD_RIGHT);
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadUp, SDL_CONTROLLER_BUTTON_DPAD_UP);
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadDown, SDL_CONTROLLER_BUTTON_DPAD_DOWN);
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadL1, SDL_CONTROLLER_BUTTON_LEFTSHOULDER);
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadR1, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER);
ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadL2, SDL_CONTROLLER_AXIS_TRIGGERLEFT, 0.0f, 32767);
ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadR2, SDL_CONTROLLER_AXIS_TRIGGERRIGHT, 0.0f, 32767);
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadL3, SDL_CONTROLLER_BUTTON_LEFTSTICK);
ImGui_ImplSDL2_UpdateGamepadButton(bd, io, ImGuiKey_GamepadR3, SDL_CONTROLLER_BUTTON_RIGHTSTICK);
ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickLeft, SDL_CONTROLLER_AXIS_LEFTX, -thumb_dead_zone, -32768);
ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickRight, SDL_CONTROLLER_AXIS_LEFTX, +thumb_dead_zone, +32767);
ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickUp, SDL_CONTROLLER_AXIS_LEFTY, -thumb_dead_zone, -32768);
ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickDown, SDL_CONTROLLER_AXIS_LEFTY, +thumb_dead_zone, +32767);
ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickLeft, SDL_CONTROLLER_AXIS_RIGHTX, -thumb_dead_zone, -32768);
ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickRight, SDL_CONTROLLER_AXIS_RIGHTX, +thumb_dead_zone, +32767);
ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickUp, SDL_CONTROLLER_AXIS_RIGHTY, -thumb_dead_zone, -32768);
ImGui_ImplSDL2_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickDown, SDL_CONTROLLER_AXIS_RIGHTY, +thumb_dead_zone, +32767);
}
void ImGui_ImplSDL2_NewFrame()
{
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDL2_Init()?");
ImGuiIO& io = ImGui::GetIO();
// Setup display size (every frame to accommodate for window resizing)
int w, h;
int display_w, display_h;
SDL_GetWindowSize(bd->Window, &w, &h);
if (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_MINIMIZED)
w = h = 0;
if (bd->Renderer != nullptr)
SDL_GetRendererOutputSize(bd->Renderer, &display_w, &display_h);
#if SDL_HAS_VULKAN
else if (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_VULKAN)
SDL_Vulkan_GetDrawableSize(bd->Window, &display_w, &display_h);
#endif
else
SDL_GL_GetDrawableSize(bd->Window, &display_w, &display_h);
io.DisplaySize = ImVec2((float)w, (float)h);
if (w > 0 && h > 0)
io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);
// Setup time step (we don't use SDL_GetTicks() because it is using millisecond resolution)
// (Accept SDL_GetPerformanceCounter() not returning a monotonically increasing value. Happens in VMs and Emscripten, see #6189, #6114, #3644)
static Uint64 frequency = SDL_GetPerformanceFrequency();
Uint64 current_time = SDL_GetPerformanceCounter();
if (current_time <= bd->Time)
current_time = bd->Time + 1;
io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / frequency) : (float)(1.0f / 60.0f);
bd->Time = current_time;
if (bd->MouseLastLeaveFrame && bd->MouseLastLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)
{
bd->MouseWindowID = 0;
bd->MouseLastLeaveFrame = 0;
io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
}
ImGui_ImplSDL2_UpdateMouseData();
ImGui_ImplSDL2_UpdateMouseCursor();
// Update game controllers (if enabled and available)
ImGui_ImplSDL2_UpdateGamepads();
}
//-----------------------------------------------------------------------------
#if defined(__clang__)
#pragma clang diagnostic pop
#endif
#endif // #ifndef IMGUI_DISABLE

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// dear imgui: Platform Backend for SDL2
// This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
// (Info: SDL2 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)
// Implemented features:
// [X] Platform: Clipboard support.
// [X] Platform: Mouse support. Can discriminate Mouse/TouchScreen.
// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy SDL_SCANCODE_* values are obsolete since 1.87 and not supported since 1.91.5]
// [X] Platform: Gamepad support.
// [X] Platform: Mouse cursor shape and visibility (ImGuiBackendFlags_HasMouseCursors). Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
// [X] Platform: Basic IME support. App needs to call 'SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");' before SDL_CreateWindow()!.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// Learn about Dear ImGui:
// - FAQ https://dearimgui.com/faq
// - Getting Started https://dearimgui.com/getting-started
// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
// - Introduction, links and more at the top of imgui.cpp
#pragma once
#include "imgui.h" // IMGUI_IMPL_API
#ifndef IMGUI_DISABLE
struct SDL_Window;
struct SDL_Renderer;
struct _SDL_GameController;
typedef union SDL_Event SDL_Event;
// Follow "Getting Started" link and check examples/ folder to learn about using backends!
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context);
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window);
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window);
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForMetal(SDL_Window* window);
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForSDLRenderer(SDL_Window* window, SDL_Renderer* renderer);
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForOther(SDL_Window* window);
IMGUI_IMPL_API void ImGui_ImplSDL2_Shutdown();
IMGUI_IMPL_API void ImGui_ImplSDL2_NewFrame();
IMGUI_IMPL_API bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event);
// Gamepad selection automatically starts in AutoFirst mode, picking first available SDL_Gamepad. You may override this.
// When using manual mode, caller is responsible for opening/closing gamepad.
enum ImGui_ImplSDL2_GamepadMode { ImGui_ImplSDL2_GamepadMode_AutoFirst, ImGui_ImplSDL2_GamepadMode_AutoAll, ImGui_ImplSDL2_GamepadMode_Manual };
IMGUI_IMPL_API void ImGui_ImplSDL2_SetGamepadMode(ImGui_ImplSDL2_GamepadMode mode, struct _SDL_GameController** manual_gamepads_array = nullptr, int manual_gamepads_count = -1);
#endif // #ifndef IMGUI_DISABLE

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// dear imgui: Renderer Backend for SDL_Renderer for SDL2
// (Requires: SDL 2.0.17+)
// Note that SDL_Renderer is an _optional_ component of SDL2, which IMHO is now largely obsolete.
// For a multi-platform app consider using other technologies:
// - SDL3+SDL_GPU: SDL_GPU is SDL3 new graphics abstraction API. You will need to update to SDL3.
// - SDL2+DirectX, SDL2+OpenGL, SDL2+Vulkan: combine SDL with dedicated renderers.
// If your application wants to render any non trivial amount of graphics other than UI,
// please be aware that SDL_Renderer currently offers a limited graphic API to the end-user
// and it might be difficult to step out of those boundaries.
// Implemented features:
// [X] Renderer: User texture binding. Use 'SDL_Texture*' as ImTextureID. Read the FAQ about ImTextureID!
// [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
// [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
// You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// Learn about Dear ImGui:
// - FAQ https://dearimgui.com/faq
// - Getting Started https://dearimgui.com/getting-started
// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
// - Introduction, links and more at the top of imgui.cpp
// CHANGELOG
// 2025-01-18: Use endian-dependent RGBA32 texture format, to match SDL_Color.
// 2024-10-09: Expose selected render state in ImGui_ImplSDLRenderer2_RenderState, which you can access in 'void* platform_io.Renderer_RenderState' during draw callbacks.
// 2024-05-14: *BREAKING CHANGE* ImGui_ImplSDLRenderer3_RenderDrawData() requires SDL_Renderer* passed as parameter.
// 2023-05-30: Renamed imgui_impl_sdlrenderer.h/.cpp to imgui_impl_sdlrenderer2.h/.cpp to accommodate for upcoming SDL3.
// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
// 2021-12-21: Update SDL_RenderGeometryRaw() format to work with SDL 2.0.19.
// 2021-12-03: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
// 2021-10-06: Backup and restore modified ClipRect/Viewport.
// 2021-09-21: Initial version.
#include "imgui.h"
#ifndef IMGUI_DISABLE
#include "imgui_impl_sdlrenderer2.h"
#include <stdint.h> // intptr_t
// Clang warnings with -Weverything
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness
#endif
// SDL
#include <SDL.h>
#if !SDL_VERSION_ATLEAST(2,0,17)
#error This backend requires SDL 2.0.17+ because of SDL_RenderGeometry() function
#endif
// SDL_Renderer data
struct ImGui_ImplSDLRenderer2_Data
{
SDL_Renderer* Renderer; // Main viewport's renderer
SDL_Texture* FontTexture;
ImGui_ImplSDLRenderer2_Data() { memset((void*)this, 0, sizeof(*this)); }
};
// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
static ImGui_ImplSDLRenderer2_Data* ImGui_ImplSDLRenderer2_GetBackendData()
{
return ImGui::GetCurrentContext() ? (ImGui_ImplSDLRenderer2_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
}
// Functions
bool ImGui_ImplSDLRenderer2_Init(SDL_Renderer* renderer)
{
ImGuiIO& io = ImGui::GetIO();
IMGUI_CHECKVERSION();
IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
IM_ASSERT(renderer != nullptr && "SDL_Renderer not initialized!");
// Setup backend capabilities flags
ImGui_ImplSDLRenderer2_Data* bd = IM_NEW(ImGui_ImplSDLRenderer2_Data)();
io.BackendRendererUserData = (void*)bd;
io.BackendRendererName = "imgui_impl_sdlrenderer2";
io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
bd->Renderer = renderer;
return true;
}
void ImGui_ImplSDLRenderer2_Shutdown()
{
ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplSDLRenderer2_DestroyDeviceObjects();
io.BackendRendererName = nullptr;
io.BackendRendererUserData = nullptr;
io.BackendFlags &= ~ImGuiBackendFlags_RendererHasVtxOffset;
IM_DELETE(bd);
}
static void ImGui_ImplSDLRenderer2_SetupRenderState(SDL_Renderer* renderer)
{
// Clear out any viewports and cliprect set by the user
// FIXME: Technically speaking there are lots of other things we could backup/setup/restore during our render process.
SDL_RenderSetViewport(renderer, nullptr);
SDL_RenderSetClipRect(renderer, nullptr);
}
void ImGui_ImplSDLRenderer2_NewFrame()
{
ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDLRenderer2_Init()?");
if (!bd->FontTexture)
ImGui_ImplSDLRenderer2_CreateDeviceObjects();
}
void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data, SDL_Renderer* renderer)
{
// If there's a scale factor set by the user, use that instead
// If the user has specified a scale factor to SDL_Renderer already via SDL_RenderSetScale(), SDL will scale whatever we pass
// to SDL_RenderGeometryRaw() by that scale factor. In that case we don't want to be also scaling it ourselves here.
float rsx = 1.0f;
float rsy = 1.0f;
SDL_RenderGetScale(renderer, &rsx, &rsy);
ImVec2 render_scale;
render_scale.x = (rsx == 1.0f) ? draw_data->FramebufferScale.x : 1.0f;
render_scale.y = (rsy == 1.0f) ? draw_data->FramebufferScale.y : 1.0f;
// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
int fb_width = (int)(draw_data->DisplaySize.x * render_scale.x);
int fb_height = (int)(draw_data->DisplaySize.y * render_scale.y);
if (fb_width == 0 || fb_height == 0)
return;
// Backup SDL_Renderer state that will be modified to restore it afterwards
struct BackupSDLRendererState
{
SDL_Rect Viewport;
bool ClipEnabled;
SDL_Rect ClipRect;
};
BackupSDLRendererState old = {};
old.ClipEnabled = SDL_RenderIsClipEnabled(renderer) == SDL_TRUE;
SDL_RenderGetViewport(renderer, &old.Viewport);
SDL_RenderGetClipRect(renderer, &old.ClipRect);
// Setup desired state
ImGui_ImplSDLRenderer2_SetupRenderState(renderer);
// Setup render state structure (for callbacks and custom texture bindings)
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
ImGui_ImplSDLRenderer2_RenderState render_state;
render_state.Renderer = renderer;
platform_io.Renderer_RenderState = &render_state;
// Will project scissor/clipping rectangles into framebuffer space
ImVec2 clip_off = draw_data->DisplayPos; // (0,0) unless using multi-viewports
ImVec2 clip_scale = render_scale;
// Render command lists
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* draw_list = draw_data->CmdLists[n];
const ImDrawVert* vtx_buffer = draw_list->VtxBuffer.Data;
const ImDrawIdx* idx_buffer = draw_list->IdxBuffer.Data;
for (int cmd_i = 0; cmd_i < draw_list->CmdBuffer.Size; cmd_i++)
{
const ImDrawCmd* pcmd = &draw_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback)
{
// User callback, registered via ImDrawList::AddCallback()
// (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
ImGui_ImplSDLRenderer2_SetupRenderState(renderer);
else
pcmd->UserCallback(draw_list, pcmd);
}
else
{
// Project scissor/clipping rectangles into framebuffer space
ImVec2 clip_min((pcmd->ClipRect.x - clip_off.x) * clip_scale.x, (pcmd->ClipRect.y - clip_off.y) * clip_scale.y);
ImVec2 clip_max((pcmd->ClipRect.z - clip_off.x) * clip_scale.x, (pcmd->ClipRect.w - clip_off.y) * clip_scale.y);
if (clip_min.x < 0.0f) { clip_min.x = 0.0f; }
if (clip_min.y < 0.0f) { clip_min.y = 0.0f; }
if (clip_max.x > (float)fb_width) { clip_max.x = (float)fb_width; }
if (clip_max.y > (float)fb_height) { clip_max.y = (float)fb_height; }
if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
continue;
SDL_Rect r = { (int)(clip_min.x), (int)(clip_min.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y) };
SDL_RenderSetClipRect(renderer, &r);
const float* xy = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, pos));
const float* uv = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, uv));
#if SDL_VERSION_ATLEAST(2,0,19)
const SDL_Color* color = (const SDL_Color*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col)); // SDL 2.0.19+
#else
const int* color = (const int*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col)); // SDL 2.0.17 and 2.0.18
#endif
// Bind texture, Draw
SDL_Texture* tex = (SDL_Texture*)pcmd->GetTexID();
SDL_RenderGeometryRaw(renderer, tex,
xy, (int)sizeof(ImDrawVert),
color, (int)sizeof(ImDrawVert),
uv, (int)sizeof(ImDrawVert),
draw_list->VtxBuffer.Size - pcmd->VtxOffset,
idx_buffer + pcmd->IdxOffset, pcmd->ElemCount, sizeof(ImDrawIdx));
}
}
}
platform_io.Renderer_RenderState = nullptr;
// Restore modified SDL_Renderer state
SDL_RenderSetViewport(renderer, &old.Viewport);
SDL_RenderSetClipRect(renderer, old.ClipEnabled ? &old.ClipRect : nullptr);
}
// Called by Init/NewFrame/Shutdown
bool ImGui_ImplSDLRenderer2_CreateFontsTexture()
{
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
// Build texture atlas
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Load as RGBA 32-bit (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
// Upload texture to graphics system
// (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
bd->FontTexture = SDL_CreateTexture(bd->Renderer, SDL_PIXELFORMAT_RGBA32, SDL_TEXTUREACCESS_STATIC, width, height);
if (bd->FontTexture == nullptr)
{
SDL_Log("error creating texture");
return false;
}
SDL_UpdateTexture(bd->FontTexture, nullptr, pixels, 4 * width);
SDL_SetTextureBlendMode(bd->FontTexture, SDL_BLENDMODE_BLEND);
SDL_SetTextureScaleMode(bd->FontTexture, SDL_ScaleModeLinear);
// Store our identifier
io.Fonts->SetTexID((ImTextureID)(intptr_t)bd->FontTexture);
return true;
}
void ImGui_ImplSDLRenderer2_DestroyFontsTexture()
{
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
if (bd->FontTexture)
{
io.Fonts->SetTexID(0);
SDL_DestroyTexture(bd->FontTexture);
bd->FontTexture = nullptr;
}
}
bool ImGui_ImplSDLRenderer2_CreateDeviceObjects()
{
return ImGui_ImplSDLRenderer2_CreateFontsTexture();
}
void ImGui_ImplSDLRenderer2_DestroyDeviceObjects()
{
ImGui_ImplSDLRenderer2_DestroyFontsTexture();
}
//-----------------------------------------------------------------------------
#if defined(__clang__)
#pragma clang diagnostic pop
#endif
#endif // #ifndef IMGUI_DISABLE

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// dear imgui: Renderer Backend for SDL_Renderer for SDL2
// (Requires: SDL 2.0.17+)
// Note that SDL_Renderer is an _optional_ component of SDL2, which IMHO is now largely obsolete.
// For a multi-platform app consider using other technologies:
// - SDL3+SDL_GPU: SDL_GPU is SDL3 new graphics abstraction API. You will need to update to SDL3.
// - SDL2+DirectX, SDL2+OpenGL, SDL2+Vulkan: combine SDL with dedicated renderers.
// If your application wants to render any non trivial amount of graphics other than UI,
// please be aware that SDL_Renderer currently offers a limited graphic API to the end-user
// and it might be difficult to step out of those boundaries.
// Implemented features:
// [X] Renderer: User texture binding. Use 'SDL_Texture*' as ImTextureID. Read the FAQ about ImTextureID!
// [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
// [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// Learn about Dear ImGui:
// - FAQ https://dearimgui.com/faq
// - Getting Started https://dearimgui.com/getting-started
// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
// - Introduction, links and more at the top of imgui.cpp
#pragma once
#ifndef IMGUI_DISABLE
#include "imgui.h" // IMGUI_IMPL_API
struct SDL_Renderer;
// Follow "Getting Started" link and check examples/ folder to learn about using backends!
IMGUI_IMPL_API bool ImGui_ImplSDLRenderer2_Init(SDL_Renderer* renderer);
IMGUI_IMPL_API void ImGui_ImplSDLRenderer2_Shutdown();
IMGUI_IMPL_API void ImGui_ImplSDLRenderer2_NewFrame();
IMGUI_IMPL_API void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data, SDL_Renderer* renderer);
// Called by Init/NewFrame/Shutdown
IMGUI_IMPL_API bool ImGui_ImplSDLRenderer2_CreateFontsTexture();
IMGUI_IMPL_API void ImGui_ImplSDLRenderer2_DestroyFontsTexture();
IMGUI_IMPL_API bool ImGui_ImplSDLRenderer2_CreateDeviceObjects();
IMGUI_IMPL_API void ImGui_ImplSDLRenderer2_DestroyDeviceObjects();
// [BETA] Selected render state data shared with callbacks.
// This is temporarily stored in GetPlatformIO().Renderer_RenderState during the ImGui_ImplSDLRenderer2_RenderDrawData() call.
// (Please open an issue if you feel you need access to more data)
struct ImGui_ImplSDLRenderer2_RenderState
{
SDL_Renderer* Renderer;
};
#endif // #ifndef IMGUI_DISABLE

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//-----------------------------------------------------------------------------
// DEAR IMGUI COMPILE-TIME OPTIONS
// Runtime options (clipboard callbacks, enabling various features, etc.) can generally be set via the ImGuiIO structure.
// You can use ImGui::SetAllocatorFunctions() before calling ImGui::CreateContext() to rewire memory allocation functions.
//-----------------------------------------------------------------------------
// A) You may edit imconfig.h (and not overwrite it when updating Dear ImGui, or maintain a patch/rebased branch with your modifications to it)
// B) or '#define IMGUI_USER_CONFIG "my_imgui_config.h"' in your project and then add directives in your own file without touching this template.
//-----------------------------------------------------------------------------
// You need to make sure that configuration settings are defined consistently _everywhere_ Dear ImGui is used, which include the imgui*.cpp
// files but also _any_ of your code that uses Dear ImGui. This is because some compile-time options have an affect on data structures.
// Defining those options in imconfig.h will ensure every compilation unit gets to see the same data structure layouts.
// Call IMGUI_CHECKVERSION() from your .cpp file to verify that the data structures your files are using are matching the ones imgui.cpp is using.
//-----------------------------------------------------------------------------
#pragma once
//---- Define assertion handler. Defaults to calling assert().
// If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
//#define IM_ASSERT(_EXPR) MyAssert(_EXPR)
//#define IM_ASSERT(_EXPR) ((void)(_EXPR)) // Disable asserts
//---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
// Using Dear ImGui via a shared library is not recommended, because of function call overhead and because we don't guarantee backward nor forward ABI compatibility.
// - Windows DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
// for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
//#define IMGUI_API __declspec(dllexport) // MSVC Windows: DLL export
//#define IMGUI_API __declspec(dllimport) // MSVC Windows: DLL import
//#define IMGUI_API __attribute__((visibility("default"))) // GCC/Clang: override visibility when set is hidden
//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to clean your code of obsolete function/names.
//#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
//---- Disable all of Dear ImGui or don't implement standard windows/tools.
// It is very strongly recommended to NOT disable the demo windows and debug tool during development. They are extremely useful in day to day work. Please read comments in imgui_demo.cpp.
//#define IMGUI_DISABLE // Disable everything: all headers and source files will be empty.
//#define IMGUI_DISABLE_DEMO_WINDOWS // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty.
//#define IMGUI_DISABLE_DEBUG_TOOLS // Disable metrics/debugger and other debug tools: ShowMetricsWindow(), ShowDebugLogWindow() and ShowIDStackToolWindow() will be empty.
//---- Don't implement some functions to reduce linkage requirements.
//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc. (user32.lib/.a, kernel32.lib/.a)
//#define IMGUI_ENABLE_WIN32_DEFAULT_IME_FUNCTIONS // [Win32] [Default with Visual Studio] Implement default IME handler (require imm32.lib/.a, auto-link for Visual Studio, -limm32 on command-line for MinGW)
//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS // [Win32] [Default with non-Visual Studio compilers] Don't implement default IME handler (won't require imm32.lib/.a)
//#define IMGUI_DISABLE_WIN32_FUNCTIONS // [Win32] Won't use and link with any Win32 function (clipboard, IME).
//#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
//#define IMGUI_DISABLE_DEFAULT_SHELL_FUNCTIONS // Don't implement default platform_io.Platform_OpenInShellFn() handler (Win32: ShellExecute(), require shell32.lib/.a, Mac/Linux: use system("")).
//#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
//#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
//#define IMGUI_DISABLE_FILE_FUNCTIONS // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle at all (replace them with dummies)
//#define IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle so you can implement them yourself if you don't want to link with fopen/fclose/fread/fwrite. This will also disable the LogToTTY() function.
//#define IMGUI_DISABLE_DEFAULT_ALLOCATORS // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().
//#define IMGUI_DISABLE_DEFAULT_FONT // Disable default embedded font (ProggyClean.ttf), remove ~9.5 KB from output binary. AddFontDefault() will assert.
//#define IMGUI_DISABLE_SSE // Disable use of SSE intrinsics even if available
//---- Enable Test Engine / Automation features.
//#define IMGUI_ENABLE_TEST_ENGINE // Enable imgui_test_engine hooks. Generally set automatically by include "imgui_te_config.h", see Test Engine for details.
//---- Include imgui_user.h at the end of imgui.h as a convenience
// May be convenient for some users to only explicitly include vanilla imgui.h and have extra stuff included.
//#define IMGUI_INCLUDE_IMGUI_USER_H
//#define IMGUI_USER_H_FILENAME "my_folder/my_imgui_user.h"
//---- Pack vertex colors as BGRA8 instead of RGBA8 (to avoid converting from one to another). Need dedicated backend support.
//#define IMGUI_USE_BGRA_PACKED_COLOR
//---- Use legacy CRC32-adler tables (used before 1.91.6), in order to preserve old .ini data that you cannot afford to invalidate.
//#define IMGUI_USE_LEGACY_CRC32_ADLER
//---- Use 32-bit for ImWchar (default is 16-bit) to support Unicode planes 1-16. (e.g. point beyond 0xFFFF like emoticons, dingbats, symbols, shapes, ancient languages, etc...)
//#define IMGUI_USE_WCHAR32
//---- Avoid multiple STB libraries implementations, or redefine path/filenames to prioritize another version
// By default the embedded implementations are declared static and not available outside of Dear ImGui sources files.
//#define IMGUI_STB_TRUETYPE_FILENAME "my_folder/stb_truetype.h"
//#define IMGUI_STB_RECT_PACK_FILENAME "my_folder/stb_rect_pack.h"
//#define IMGUI_STB_SPRINTF_FILENAME "my_folder/stb_sprintf.h" // only used if IMGUI_USE_STB_SPRINTF is defined.
//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
//#define IMGUI_DISABLE_STB_SPRINTF_IMPLEMENTATION // only disabled if IMGUI_USE_STB_SPRINTF is defined.
//---- Use stb_sprintf.h for a faster implementation of vsnprintf instead of the one from libc (unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined)
// Compatibility checks of arguments and formats done by clang and GCC will be disabled in order to support the extra formats provided by stb_sprintf.h.
//#define IMGUI_USE_STB_SPRINTF
//---- Use FreeType to build and rasterize the font atlas (instead of stb_truetype which is embedded by default in Dear ImGui)
// Requires FreeType headers to be available in the include path. Requires program to be compiled with 'misc/freetype/imgui_freetype.cpp' (in this repository) + the FreeType library (not provided).
// On Windows you may use vcpkg with 'vcpkg install freetype --triplet=x64-windows' + 'vcpkg integrate install'.
//#define IMGUI_ENABLE_FREETYPE
//---- Use FreeType + plutosvg or lunasvg to render OpenType SVG fonts (SVGinOT)
// Only works in combination with IMGUI_ENABLE_FREETYPE.
// - plutosvg is currently easier to install, as e.g. it is part of vcpkg. It will support more fonts and may load them faster. See misc/freetype/README for instructions.
// - Both require headers to be available in the include path + program to be linked with the library code (not provided).
// - (note: lunasvg implementation is based on Freetype's rsvg-port.c which is licensed under CeCILL-C Free Software License Agreement)
//#define IMGUI_ENABLE_FREETYPE_PLUTOSVG
//#define IMGUI_ENABLE_FREETYPE_LUNASVG
//---- Use stb_truetype to build and rasterize the font atlas (default)
// The only purpose of this define is if you want force compilation of the stb_truetype backend ALONG with the FreeType backend.
//#define IMGUI_ENABLE_STB_TRUETYPE
//---- Define constructor and implicit cast operators to convert back<>forth between your math types and ImVec2/ImVec4.
// This will be inlined as part of ImVec2 and ImVec4 class declarations.
/*
#define IM_VEC2_CLASS_EXTRA \
constexpr ImVec2(const MyVec2& f) : x(f.x), y(f.y) {} \
operator MyVec2() const { return MyVec2(x,y); }
#define IM_VEC4_CLASS_EXTRA \
constexpr ImVec4(const MyVec4& f) : x(f.x), y(f.y), z(f.z), w(f.w) {} \
operator MyVec4() const { return MyVec4(x,y,z,w); }
*/
//---- ...Or use Dear ImGui's own very basic math operators.
//#define IMGUI_DEFINE_MATH_OPERATORS
//---- Use 32-bit vertex indices (default is 16-bit) is one way to allow large meshes with more than 64K vertices.
// Your renderer backend will need to support it (most example renderer backends support both 16/32-bit indices).
// Another way to allow large meshes while keeping 16-bit indices is to handle ImDrawCmd::VtxOffset in your renderer.
// Read about ImGuiBackendFlags_RendererHasVtxOffset for details.
//#define ImDrawIdx unsigned int
//---- Override ImDrawCallback signature (will need to modify renderer backends accordingly)
//struct ImDrawList;
//struct ImDrawCmd;
//typedef void (*MyImDrawCallback)(const ImDrawList* draw_list, const ImDrawCmd* cmd, void* my_renderer_user_data);
//#define ImDrawCallback MyImDrawCallback
//---- Debug Tools: Macro to break in Debugger (we provide a default implementation of this in the codebase)
// (use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy debugging.)
//#define IM_DEBUG_BREAK IM_ASSERT(0)
//#define IM_DEBUG_BREAK __debugbreak()
//---- Debug Tools: Enable slower asserts
//#define IMGUI_DEBUG_PARANOID
//---- Tip: You can add extra functions within the ImGui:: namespace from anywhere (e.g. your own sources/header files)
/*
namespace ImGui
{
void MyFunction(const char* name, MyMatrix44* mtx);
}
*/

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// [DEAR IMGUI]
// This is a slightly modified version of stb_rect_pack.h 1.01.
// Grep for [DEAR IMGUI] to find the changes.
//
// stb_rect_pack.h - v1.01 - public domain - rectangle packing
// Sean Barrett 2014
//
// Useful for e.g. packing rectangular textures into an atlas.
// Does not do rotation.
//
// Before #including,
//
// #define STB_RECT_PACK_IMPLEMENTATION
//
// in the file that you want to have the implementation.
//
// Not necessarily the awesomest packing method, but better than
// the totally naive one in stb_truetype (which is primarily what
// this is meant to replace).
//
// Has only had a few tests run, may have issues.
//
// More docs to come.
//
// No memory allocations; uses qsort() and assert() from stdlib.
// Can override those by defining STBRP_SORT and STBRP_ASSERT.
//
// This library currently uses the Skyline Bottom-Left algorithm.
//
// Please note: better rectangle packers are welcome! Please
// implement them to the same API, but with a different init
// function.
//
// Credits
//
// Library
// Sean Barrett
// Minor features
// Martins Mozeiko
// github:IntellectualKitty
//
// Bugfixes / warning fixes
// Jeremy Jaussaud
// Fabian Giesen
//
// Version history:
//
// 1.01 (2021-07-11) always use large rect mode, expose STBRP__MAXVAL in public section
// 1.00 (2019-02-25) avoid small space waste; gracefully fail too-wide rectangles
// 0.99 (2019-02-07) warning fixes
// 0.11 (2017-03-03) return packing success/fail result
// 0.10 (2016-10-25) remove cast-away-const to avoid warnings
// 0.09 (2016-08-27) fix compiler warnings
// 0.08 (2015-09-13) really fix bug with empty rects (w=0 or h=0)
// 0.07 (2015-09-13) fix bug with empty rects (w=0 or h=0)
// 0.06 (2015-04-15) added STBRP_SORT to allow replacing qsort
// 0.05: added STBRP_ASSERT to allow replacing assert
// 0.04: fixed minor bug in STBRP_LARGE_RECTS support
// 0.01: initial release
//
// LICENSE
//
// See end of file for license information.
//////////////////////////////////////////////////////////////////////////////
//
// INCLUDE SECTION
//
#ifndef STB_INCLUDE_STB_RECT_PACK_H
#define STB_INCLUDE_STB_RECT_PACK_H
#define STB_RECT_PACK_VERSION 1
#ifdef STBRP_STATIC
#define STBRP_DEF static
#else
#define STBRP_DEF extern
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef struct stbrp_context stbrp_context;
typedef struct stbrp_node stbrp_node;
typedef struct stbrp_rect stbrp_rect;
typedef int stbrp_coord;
#define STBRP__MAXVAL 0x7fffffff
// Mostly for internal use, but this is the maximum supported coordinate value.
STBRP_DEF int stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
// Assign packed locations to rectangles. The rectangles are of type
// 'stbrp_rect' defined below, stored in the array 'rects', and there
// are 'num_rects' many of them.
//
// Rectangles which are successfully packed have the 'was_packed' flag
// set to a non-zero value and 'x' and 'y' store the minimum location
// on each axis (i.e. bottom-left in cartesian coordinates, top-left
// if you imagine y increasing downwards). Rectangles which do not fit
// have the 'was_packed' flag set to 0.
//
// You should not try to access the 'rects' array from another thread
// while this function is running, as the function temporarily reorders
// the array while it executes.
//
// To pack into another rectangle, you need to call stbrp_init_target
// again. To continue packing into the same rectangle, you can call
// this function again. Calling this multiple times with multiple rect
// arrays will probably produce worse packing results than calling it
// a single time with the full rectangle array, but the option is
// available.
//
// The function returns 1 if all of the rectangles were successfully
// packed and 0 otherwise.
struct stbrp_rect
{
// reserved for your use:
int id;
// input:
stbrp_coord w, h;
// output:
stbrp_coord x, y;
int was_packed; // non-zero if valid packing
}; // 16 bytes, nominally
STBRP_DEF void stbrp_init_target (stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes);
// Initialize a rectangle packer to:
// pack a rectangle that is 'width' by 'height' in dimensions
// using temporary storage provided by the array 'nodes', which is 'num_nodes' long
//
// You must call this function every time you start packing into a new target.
//
// There is no "shutdown" function. The 'nodes' memory must stay valid for
// the following stbrp_pack_rects() call (or calls), but can be freed after
// the call (or calls) finish.
//
// Note: to guarantee best results, either:
// 1. make sure 'num_nodes' >= 'width'
// or 2. call stbrp_allow_out_of_mem() defined below with 'allow_out_of_mem = 1'
//
// If you don't do either of the above things, widths will be quantized to multiples
// of small integers to guarantee the algorithm doesn't run out of temporary storage.
//
// If you do #2, then the non-quantized algorithm will be used, but the algorithm
// may run out of temporary storage and be unable to pack some rectangles.
STBRP_DEF void stbrp_setup_allow_out_of_mem (stbrp_context *context, int allow_out_of_mem);
// Optionally call this function after init but before doing any packing to
// change the handling of the out-of-temp-memory scenario, described above.
// If you call init again, this will be reset to the default (false).
STBRP_DEF void stbrp_setup_heuristic (stbrp_context *context, int heuristic);
// Optionally select which packing heuristic the library should use. Different
// heuristics will produce better/worse results for different data sets.
// If you call init again, this will be reset to the default.
enum
{
STBRP_HEURISTIC_Skyline_default=0,
STBRP_HEURISTIC_Skyline_BL_sortHeight = STBRP_HEURISTIC_Skyline_default,
STBRP_HEURISTIC_Skyline_BF_sortHeight
};
//////////////////////////////////////////////////////////////////////////////
//
// the details of the following structures don't matter to you, but they must
// be visible so you can handle the memory allocations for them
struct stbrp_node
{
stbrp_coord x,y;
stbrp_node *next;
};
struct stbrp_context
{
int width;
int height;
int align;
int init_mode;
int heuristic;
int num_nodes;
stbrp_node *active_head;
stbrp_node *free_head;
stbrp_node extra[2]; // we allocate two extra nodes so optimal user-node-count is 'width' not 'width+2'
};
#ifdef __cplusplus
}
#endif
#endif
//////////////////////////////////////////////////////////////////////////////
//
// IMPLEMENTATION SECTION
//
#ifdef STB_RECT_PACK_IMPLEMENTATION
#ifndef STBRP_SORT
#include <stdlib.h>
#define STBRP_SORT qsort
#endif
#ifndef STBRP_ASSERT
#include <assert.h>
#define STBRP_ASSERT assert
#endif
#ifdef _MSC_VER
#define STBRP__NOTUSED(v) (void)(v)
#define STBRP__CDECL __cdecl
#else
#define STBRP__NOTUSED(v) (void)sizeof(v)
#define STBRP__CDECL
#endif
enum
{
STBRP__INIT_skyline = 1
};
STBRP_DEF void stbrp_setup_heuristic(stbrp_context *context, int heuristic)
{
switch (context->init_mode) {
case STBRP__INIT_skyline:
STBRP_ASSERT(heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight || heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight);
context->heuristic = heuristic;
break;
default:
STBRP_ASSERT(0);
}
}
STBRP_DEF void stbrp_setup_allow_out_of_mem(stbrp_context *context, int allow_out_of_mem)
{
if (allow_out_of_mem)
// if it's ok to run out of memory, then don't bother aligning them;
// this gives better packing, but may fail due to OOM (even though
// the rectangles easily fit). @TODO a smarter approach would be to only
// quantize once we've hit OOM, then we could get rid of this parameter.
context->align = 1;
else {
// if it's not ok to run out of memory, then quantize the widths
// so that num_nodes is always enough nodes.
//
// I.e. num_nodes * align >= width
// align >= width / num_nodes
// align = ceil(width/num_nodes)
context->align = (context->width + context->num_nodes-1) / context->num_nodes;
}
}
STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes)
{
int i;
for (i=0; i < num_nodes-1; ++i)
nodes[i].next = &nodes[i+1];
nodes[i].next = NULL;
context->init_mode = STBRP__INIT_skyline;
context->heuristic = STBRP_HEURISTIC_Skyline_default;
context->free_head = &nodes[0];
context->active_head = &context->extra[0];
context->width = width;
context->height = height;
context->num_nodes = num_nodes;
stbrp_setup_allow_out_of_mem(context, 0);
// node 0 is the full width, node 1 is the sentinel (lets us not store width explicitly)
context->extra[0].x = 0;
context->extra[0].y = 0;
context->extra[0].next = &context->extra[1];
context->extra[1].x = (stbrp_coord) width;
context->extra[1].y = (1<<30);
context->extra[1].next = NULL;
}
// find minimum y position if it starts at x1
static int stbrp__skyline_find_min_y(stbrp_context *c, stbrp_node *first, int x0, int width, int *pwaste)
{
stbrp_node *node = first;
int x1 = x0 + width;
int min_y, visited_width, waste_area;
STBRP__NOTUSED(c);
STBRP_ASSERT(first->x <= x0);
#if 0
// skip in case we're past the node
while (node->next->x <= x0)
++node;
#else
STBRP_ASSERT(node->next->x > x0); // we ended up handling this in the caller for efficiency
#endif
STBRP_ASSERT(node->x <= x0);
min_y = 0;
waste_area = 0;
visited_width = 0;
while (node->x < x1) {
if (node->y > min_y) {
// raise min_y higher.
// we've accounted for all waste up to min_y,
// but we'll now add more waste for everything we've visted
waste_area += visited_width * (node->y - min_y);
min_y = node->y;
// the first time through, visited_width might be reduced
if (node->x < x0)
visited_width += node->next->x - x0;
else
visited_width += node->next->x - node->x;
} else {
// add waste area
int under_width = node->next->x - node->x;
if (under_width + visited_width > width)
under_width = width - visited_width;
waste_area += under_width * (min_y - node->y);
visited_width += under_width;
}
node = node->next;
}
*pwaste = waste_area;
return min_y;
}
typedef struct
{
int x,y;
stbrp_node **prev_link;
} stbrp__findresult;
static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int width, int height)
{
int best_waste = (1<<30), best_x, best_y = (1 << 30);
stbrp__findresult fr;
stbrp_node **prev, *node, *tail, **best = NULL;
// align to multiple of c->align
width = (width + c->align - 1);
width -= width % c->align;
STBRP_ASSERT(width % c->align == 0);
// if it can't possibly fit, bail immediately
if (width > c->width || height > c->height) {
fr.prev_link = NULL;
fr.x = fr.y = 0;
return fr;
}
node = c->active_head;
prev = &c->active_head;
while (node->x + width <= c->width) {
int y,waste;
y = stbrp__skyline_find_min_y(c, node, node->x, width, &waste);
if (c->heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight) { // actually just want to test BL
// bottom left
if (y < best_y) {
best_y = y;
best = prev;
}
} else {
// best-fit
if (y + height <= c->height) {
// can only use it if it first vertically
if (y < best_y || (y == best_y && waste < best_waste)) {
best_y = y;
best_waste = waste;
best = prev;
}
}
}
prev = &node->next;
node = node->next;
}
best_x = (best == NULL) ? 0 : (*best)->x;
// if doing best-fit (BF), we also have to try aligning right edge to each node position
//
// e.g, if fitting
//
// ____________________
// |____________________|
//
// into
//
// | |
// | ____________|
// |____________|
//
// then right-aligned reduces waste, but bottom-left BL is always chooses left-aligned
//
// This makes BF take about 2x the time
if (c->heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight) {
tail = c->active_head;
node = c->active_head;
prev = &c->active_head;
// find first node that's admissible
while (tail->x < width)
tail = tail->next;
while (tail) {
int xpos = tail->x - width;
int y,waste;
STBRP_ASSERT(xpos >= 0);
// find the left position that matches this
while (node->next->x <= xpos) {
prev = &node->next;
node = node->next;
}
STBRP_ASSERT(node->next->x > xpos && node->x <= xpos);
y = stbrp__skyline_find_min_y(c, node, xpos, width, &waste);
if (y + height <= c->height) {
if (y <= best_y) {
if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) {
best_x = xpos;
//STBRP_ASSERT(y <= best_y); [DEAR IMGUI]
best_y = y;
best_waste = waste;
best = prev;
}
}
}
tail = tail->next;
}
}
fr.prev_link = best;
fr.x = best_x;
fr.y = best_y;
return fr;
}
static stbrp__findresult stbrp__skyline_pack_rectangle(stbrp_context *context, int width, int height)
{
// find best position according to heuristic
stbrp__findresult res = stbrp__skyline_find_best_pos(context, width, height);
stbrp_node *node, *cur;
// bail if:
// 1. it failed
// 2. the best node doesn't fit (we don't always check this)
// 3. we're out of memory
if (res.prev_link == NULL || res.y + height > context->height || context->free_head == NULL) {
res.prev_link = NULL;
return res;
}
// on success, create new node
node = context->free_head;
node->x = (stbrp_coord) res.x;
node->y = (stbrp_coord) (res.y + height);
context->free_head = node->next;
// insert the new node into the right starting point, and
// let 'cur' point to the remaining nodes needing to be
// stiched back in
cur = *res.prev_link;
if (cur->x < res.x) {
// preserve the existing one, so start testing with the next one
stbrp_node *next = cur->next;
cur->next = node;
cur = next;
} else {
*res.prev_link = node;
}
// from here, traverse cur and free the nodes, until we get to one
// that shouldn't be freed
while (cur->next && cur->next->x <= res.x + width) {
stbrp_node *next = cur->next;
// move the current node to the free list
cur->next = context->free_head;
context->free_head = cur;
cur = next;
}
// stitch the list back in
node->next = cur;
if (cur->x < res.x + width)
cur->x = (stbrp_coord) (res.x + width);
#ifdef _DEBUG
cur = context->active_head;
while (cur->x < context->width) {
STBRP_ASSERT(cur->x < cur->next->x);
cur = cur->next;
}
STBRP_ASSERT(cur->next == NULL);
{
int count=0;
cur = context->active_head;
while (cur) {
cur = cur->next;
++count;
}
cur = context->free_head;
while (cur) {
cur = cur->next;
++count;
}
STBRP_ASSERT(count == context->num_nodes+2);
}
#endif
return res;
}
static int STBRP__CDECL rect_height_compare(const void *a, const void *b)
{
const stbrp_rect *p = (const stbrp_rect *) a;
const stbrp_rect *q = (const stbrp_rect *) b;
if (p->h > q->h)
return -1;
if (p->h < q->h)
return 1;
return (p->w > q->w) ? -1 : (p->w < q->w);
}
static int STBRP__CDECL rect_original_order(const void *a, const void *b)
{
const stbrp_rect *p = (const stbrp_rect *) a;
const stbrp_rect *q = (const stbrp_rect *) b;
return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed);
}
STBRP_DEF int stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
{
int i, all_rects_packed = 1;
// we use the 'was_packed' field internally to allow sorting/unsorting
for (i=0; i < num_rects; ++i) {
rects[i].was_packed = i;
}
// sort according to heuristic
STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_height_compare);
for (i=0; i < num_rects; ++i) {
if (rects[i].w == 0 || rects[i].h == 0) {
rects[i].x = rects[i].y = 0; // empty rect needs no space
} else {
stbrp__findresult fr = stbrp__skyline_pack_rectangle(context, rects[i].w, rects[i].h);
if (fr.prev_link) {
rects[i].x = (stbrp_coord) fr.x;
rects[i].y = (stbrp_coord) fr.y;
} else {
rects[i].x = rects[i].y = STBRP__MAXVAL;
}
}
}
// unsort
STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_original_order);
// set was_packed flags and all_rects_packed status
for (i=0; i < num_rects; ++i) {
rects[i].was_packed = !(rects[i].x == STBRP__MAXVAL && rects[i].y == STBRP__MAXVAL);
if (!rects[i].was_packed)
all_rects_packed = 0;
}
// return the all_rects_packed status
return all_rects_packed;
}
#endif
/*
------------------------------------------------------------------------------
This software is available under 2 licenses -- choose whichever you prefer.
------------------------------------------------------------------------------
ALTERNATIVE A - MIT License
Copyright (c) 2017 Sean Barrett
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
------------------------------------------------------------------------------
ALTERNATIVE B - Public Domain (www.unlicense.org)
This is free and unencumbered software released into the public domain.
Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
software, either in source code form or as a compiled binary, for any purpose,
commercial or non-commercial, and by any means.
In jurisdictions that recognize copyright laws, the author or authors of this
software dedicate any and all copyright interest in the software to the public
domain. We make this dedication for the benefit of the public at large and to
the detriment of our heirs and successors. We intend this dedication to be an
overt act of relinquishment in perpetuity of all present and future rights to
this software under copyright law.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
------------------------------------------------------------------------------
*/

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misc/cpp/
InputText() wrappers for C++ standard library (STL) type: std::string.
This is also an example of how you may wrap your own similar types.
misc/debuggers/
Helper files for popular debuggers.
With the .natvis file, types like ImVector<> will be displayed nicely in Visual Studio debugger.
misc/fonts/
Fonts loading/merging instructions (e.g. How to handle glyph ranges, how to merge icons fonts).
Command line tool "binary_to_compressed_c" to create compressed arrays to embed data in source code.
Suggested fonts and links.
misc/freetype/
Font atlas builder/rasterizer using FreeType instead of stb_truetype.
Benefit from better FreeType rasterization, in particular for small fonts.
misc/single_file/
Single-file header stub.
We use this to validate compiling all *.cpp files in a same compilation unit.
Users of that technique (also called "Unity builds") can generally provide this themselves,
so we don't really recommend you use this in your projects.

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imgui_stdlib.h + imgui_stdlib.cpp
InputText() wrappers for C++ standard library (STL) type: std::string.
This is also an example of how you may wrap your own similar types.
imgui_scoped.h
[Experimental, not currently in main repository]
Additional header file with some RAII-style wrappers for common Dear ImGui functions.
Try by merging: https://github.com/ocornut/imgui/pull/2197
Discuss at: https://github.com/ocornut/imgui/issues/2096
See more C++ related extension (fmt, RAII, syntaxis sugar) on Wiki:
https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness

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// dear imgui: wrappers for C++ standard library (STL) types (std::string, etc.)
// This is also an example of how you may wrap your own similar types.
// Changelog:
// - v0.10: Initial version. Added InputText() / InputTextMultiline() calls with std::string
// See more C++ related extension (fmt, RAII, syntaxis sugar) on Wiki:
// https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness
#include "imgui.h"
#ifndef IMGUI_DISABLE
#include "imgui_stdlib.h"
// Clang warnings with -Weverything
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness
#endif
struct InputTextCallback_UserData
{
std::string* Str;
ImGuiInputTextCallback ChainCallback;
void* ChainCallbackUserData;
};
static int InputTextCallback(ImGuiInputTextCallbackData* data)
{
InputTextCallback_UserData* user_data = (InputTextCallback_UserData*)data->UserData;
if (data->EventFlag == ImGuiInputTextFlags_CallbackResize)
{
// Resize string callback
// If for some reason we refuse the new length (BufTextLen) and/or capacity (BufSize) we need to set them back to what we want.
std::string* str = user_data->Str;
IM_ASSERT(data->Buf == str->c_str());
str->resize(data->BufTextLen);
data->Buf = (char*)str->c_str();
}
else if (user_data->ChainCallback)
{
// Forward to user callback, if any
data->UserData = user_data->ChainCallbackUserData;
return user_data->ChainCallback(data);
}
return 0;
}
bool ImGui::InputText(const char* label, std::string* str, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
{
IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);
flags |= ImGuiInputTextFlags_CallbackResize;
InputTextCallback_UserData cb_user_data;
cb_user_data.Str = str;
cb_user_data.ChainCallback = callback;
cb_user_data.ChainCallbackUserData = user_data;
return InputText(label, (char*)str->c_str(), str->capacity() + 1, flags, InputTextCallback, &cb_user_data);
}
bool ImGui::InputTextMultiline(const char* label, std::string* str, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
{
IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);
flags |= ImGuiInputTextFlags_CallbackResize;
InputTextCallback_UserData cb_user_data;
cb_user_data.Str = str;
cb_user_data.ChainCallback = callback;
cb_user_data.ChainCallbackUserData = user_data;
return InputTextMultiline(label, (char*)str->c_str(), str->capacity() + 1, size, flags, InputTextCallback, &cb_user_data);
}
bool ImGui::InputTextWithHint(const char* label, const char* hint, std::string* str, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
{
IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);
flags |= ImGuiInputTextFlags_CallbackResize;
InputTextCallback_UserData cb_user_data;
cb_user_data.Str = str;
cb_user_data.ChainCallback = callback;
cb_user_data.ChainCallbackUserData = user_data;
return InputTextWithHint(label, hint, (char*)str->c_str(), str->capacity() + 1, flags, InputTextCallback, &cb_user_data);
}
#if defined(__clang__)
#pragma clang diagnostic pop
#endif
#endif // #ifndef IMGUI_DISABLE

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// dear imgui: wrappers for C++ standard library (STL) types (std::string, etc.)
// This is also an example of how you may wrap your own similar types.
// Changelog:
// - v0.10: Initial version. Added InputText() / InputTextMultiline() calls with std::string
// See more C++ related extension (fmt, RAII, syntaxis sugar) on Wiki:
// https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness
#pragma once
#ifndef IMGUI_DISABLE
#include <string>
namespace ImGui
{
// ImGui::InputText() with std::string
// Because text input needs dynamic resizing, we need to setup a callback to grow the capacity
IMGUI_API bool InputText(const char* label, std::string* str, ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = nullptr, void* user_data = nullptr);
IMGUI_API bool InputTextMultiline(const char* label, std::string* str, const ImVec2& size = ImVec2(0, 0), ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = nullptr, void* user_data = nullptr);
IMGUI_API bool InputTextWithHint(const char* label, const char* hint, std::string* str, ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = nullptr, void* user_data = nullptr);
}
#endif // #ifndef IMGUI_DISABLE

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HELPER FILES FOR POPULAR DEBUGGERS
imgui.gdb
GDB: disable stepping into trivial functions.
(read comments inside file for details)
imgui.natstepfilter
Visual Studio Debugger: disable stepping into trivial functions.
(read comments inside file for details)
imgui.natvis
Visual Studio Debugger: describe Dear ImGui types for better display.
With this, types like ImVector<> will be displayed nicely in the debugger.
(read comments inside file for details)

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Editor/imgui/misc/debuggers/imgui.gdb Normal file
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# GDB configuration to aid debugging experience
# To enable these customizations edit $HOME/.gdbinit (or ./.gdbinit if local gdbinit is enabled) and add:
# add-auto-load-safe-path /path/to/imgui.gdb
# source /path/to/imgui.gdb
#
# More Information at:
# * https://sourceware.org/gdb/current/onlinedocs/gdb/gdbinit-man.html
# * https://sourceware.org/gdb/current/onlinedocs/gdb/Init-File-in-the-Current-Directory.html#Init-File-in-the-Current-Directory
# Disable stepping into trivial functions
skip -rfunction Im(Vec2|Vec4|Strv|Vector|Span)::.+

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Editor/imgui/misc/debuggers/imgui.natstepfilter Normal file
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<?xml version="1.0" encoding="utf-8"?>
<!--
.natstepfilter file for Visual Studio debugger.
Purpose: instruct debugger to skip some functions when using StepInto (F11)
Since Visual Studio 2022 version 17.6 Preview 2 (currently available as a "Preview" build on March 14, 2023)
It is possible to add the .natstepfilter file to your project file and it will automatically be used.
(https://developercommunity.visualstudio.com/t/allow-natstepfilter-and-natjmc-to-be-included-as-p/561718)
For older Visual Studio version prior to 2022 17.6 Preview 2:
* copy in %USERPROFILE%\Documents\Visual Studio XXXX\Visualizers (current user)
* or copy in %VsInstallDirectory%\Common7\Packages\Debugger\Visualizers (all users)
If you have multiple VS version installed, the version that matters is the one you are using the IDE/debugger
of (not the compiling toolset). This is supported since Visual Studio 2012.
More information at: https://docs.microsoft.com/en-us/visualstudio/debugger/just-my-code?view=vs-2019#BKMK_C___Just_My_Code
-->
<StepFilter xmlns="http://schemas.microsoft.com/vstudio/debugger/natstepfilter/2010">
<!-- Disable stepping into trivial functions -->
<Function>
<Name>(ImVec2|ImVec4|ImStrv)::.+</Name>
<Action>NoStepInto</Action>
</Function>
<Function>
<Name>(ImVector|ImSpan).*::operator.+</Name>
<Action>NoStepInto</Action>
</Function>
</StepFilter>

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<?xml version="1.0" encoding="utf-8"?>
<!--
.natvis file for Visual Studio debugger.
Purpose: provide nicer views on data types used by Dear ImGui.
To enable:
* include file in your VS project (most recommended: not intrusive and always kept up to date!)
* or copy in %USERPROFILE%\Documents\Visual Studio XXXX\Visualizers (current user)
* or copy in %VsInstallDirectory%\Common7\Packages\Debugger\Visualizers (all users)
More information at: https://docs.microsoft.com/en-us/visualstudio/debugger/create-custom-views-of-native-objects?view=vs-2019
-->
<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
<Type Name="ImVector&lt;*&gt;">
<DisplayString>{{Size={Size} Capacity={Capacity}}}</DisplayString>
<Expand>
<ArrayItems>
<Size>Size</Size>
<ValuePointer>Data</ValuePointer>
</ArrayItems>
</Expand>
</Type>
<Type Name="ImSpan&lt;*&gt;">
<DisplayString>{{Size={DataEnd-Data} }}</DisplayString>
<Expand>
<ArrayItems>
<Size>DataEnd-Data</Size>
<ValuePointer>Data</ValuePointer>
</ArrayItems>
</Expand>
</Type>
<Type Name="ImVec2">
<DisplayString>{{x={x,g} y={y,g}}}</DisplayString>
</Type>
<Type Name="ImVec4">
<DisplayString>{{x={x,g} y={y,g} z={z,g} w={w,g}}}</DisplayString>
</Type>
<Type Name="ImRect">
<DisplayString>{{Min=({Min.x,g} {Min.y,g}) Max=({Max.x,g} {Max.y,g}) Size=({Max.x-Min.x,g} {Max.y-Min.y,g})}}</DisplayString>
<Expand>
<Item Name="Min">Min</Item>
<Item Name="Max">Max</Item>
<Item Name="[Width]">Max.x - Min.x</Item>
<Item Name="[Height]">Max.y - Min.y</Item>
</Expand>
</Type>
<Type Name="ImGuiWindow">
<DisplayString>{{Name {Name,s} Active {(Active||WasActive)?1:0,d} Child {(Flags &amp; 0x01000000)?1:0,d} Popup {(Flags &amp; 0x04000000)?1:0,d} Hidden {(Hidden)?1:0,d}}</DisplayString>
</Type>
</AutoVisualizer>

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// dear imgui
// (binary_to_compressed_c.cpp)
// Helper tool to turn a file into a C array, if you want to embed font data in your source code.
// The data is first compressed with stb_compress() to reduce source code size.
// Then stored in a C array:
// - Base85: ~5 bytes of source code for 4 bytes of input data. 5 bytes stored in binary (suggested by @mmalex).
// - As int: ~11 bytes of source code for 4 bytes of input data. 4 bytes stored in binary. Endianness dependent, need swapping on big-endian CPU.
// - As char: ~12 bytes of source code for 4 bytes of input data. 4 bytes stored in binary. Not endianness dependent.
// Load compressed TTF fonts with ImGui::GetIO().Fonts->AddFontFromMemoryCompressedTTF()
// Build with, e.g:
// # cl.exe binary_to_compressed_c.cpp
// # g++ binary_to_compressed_c.cpp
// # clang++ binary_to_compressed_c.cpp
// You can also find a precompiled Windows binary in the binary/demo package available from https://github.com/ocornut/imgui
// Usage:
// binary_to_compressed_c.exe [-nocompress] [-nostatic] [-base85] <inputfile> <symbolname>
// Usage example:
// # binary_to_compressed_c.exe myfont.ttf MyFont > myfont.cpp
// # binary_to_compressed_c.exe -base85 myfont.ttf MyFont > myfont.cpp
// Note:
// Base85 encoding will be obsoleted by future version of Dear ImGui!
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
// stb_compress* from stb.h - declaration
typedef unsigned int stb_uint;
typedef unsigned char stb_uchar;
stb_uint stb_compress(stb_uchar* out, stb_uchar* in, stb_uint len);
enum SourceEncoding
{
SourceEncoding_U8, // New default since 2024/11
SourceEncoding_U32,
SourceEncoding_Base85,
};
static bool binary_to_compressed_c(const char* filename, const char* symbol, SourceEncoding source_encoding, bool use_compression, bool use_static);
int main(int argc, char** argv)
{
if (argc < 3)
{
printf("Syntax: %s [-u8|-u32|-base85] [-nocompress] [-nostatic] <inputfile> <symbolname>\n", argv[0]);
printf("Source encoding types:\n");
printf(" -u8 = ~12 bytes of source per 4 bytes of data. 4 bytes in binary.\n");
printf(" -u32 = ~11 bytes of source per 4 bytes of data. 4 bytes in binary. Need endianness swapping on big-endian.\n");
printf(" -base85 = ~5 bytes of source per 4 bytes of data. 5 bytes in binary. Need decoder.\n");
return 0;
}
int argn = 1;
bool use_compression = true;
bool use_static = true;
SourceEncoding source_encoding = SourceEncoding_U8; // New default
while (argn < (argc - 2) && argv[argn][0] == '-')
{
if (strcmp(argv[argn], "-u8") == 0) { source_encoding = SourceEncoding_U8; argn++; }
else if (strcmp(argv[argn], "-u32") == 0) { source_encoding = SourceEncoding_U32; argn++; }
else if (strcmp(argv[argn], "-base85") == 0) { source_encoding = SourceEncoding_Base85; argn++; }
else if (strcmp(argv[argn], "-nocompress") == 0) { use_compression = false; argn++; }
else if (strcmp(argv[argn], "-nostatic") == 0) { use_static = false; argn++; }
else
{
fprintf(stderr, "Unknown argument: '%s'\n", argv[argn]);
return 1;
}
}
bool ret = binary_to_compressed_c(argv[argn], argv[argn + 1], source_encoding, use_compression, use_static);
if (!ret)
fprintf(stderr, "Error opening or reading file: '%s'\n", argv[argn]);
return ret ? 0 : 1;
}
char Encode85Byte(unsigned int x)
{
x = (x % 85) + 35;
return (char)((x >= '\\') ? x + 1 : x);
}
bool binary_to_compressed_c(const char* filename, const char* symbol, SourceEncoding source_encoding, bool use_compression, bool use_static)
{
// Read file
FILE* f = fopen(filename, "rb");
if (!f) return false;
int data_sz;
if (fseek(f, 0, SEEK_END) || (data_sz = (int)ftell(f)) == -1 || fseek(f, 0, SEEK_SET)) { fclose(f); return false; }
char* data = new char[data_sz + 4];
if (fread(data, 1, data_sz, f) != (size_t)data_sz) { fclose(f); delete[] data; return false; }
memset((void*)(((char*)data) + data_sz), 0, 4);
fclose(f);
// Compress
int maxlen = data_sz + 512 + (data_sz >> 2) + sizeof(int); // total guess
char* compressed = use_compression ? new char[maxlen] : data;
int compressed_sz = use_compression ? stb_compress((stb_uchar*)compressed, (stb_uchar*)data, data_sz) : data_sz;
if (use_compression)
memset(compressed + compressed_sz, 0, maxlen - compressed_sz);
// Output as Base85 encoded
FILE* out = stdout;
fprintf(out, "// File: '%s' (%d bytes)\n", filename, (int)data_sz);
const char* static_str = use_static ? "static " : "";
const char* compressed_str = use_compression ? "compressed_" : "";
if (source_encoding == SourceEncoding_Base85)
{
fprintf(out, "// Exported using binary_to_compressed_c.exe -base85 \"%s\" %s\n", filename, symbol);
fprintf(out, "%sconst char %s_%sdata_base85[%d+1] =\n \"", static_str, symbol, compressed_str, (int)((compressed_sz + 3) / 4)*5);
char prev_c = 0;
for (int src_i = 0; src_i < compressed_sz; src_i += 4)
{
// This is made a little more complicated by the fact that ??X sequences are interpreted as trigraphs by old C/C++ compilers. So we need to escape pairs of ??.
unsigned int d = *(unsigned int*)(compressed + src_i);
for (unsigned int n5 = 0; n5 < 5; n5++, d /= 85)
{
char c = Encode85Byte(d);
fprintf(out, (c == '?' && prev_c == '?') ? "\\%c" : "%c", c);
prev_c = c;
}
if ((src_i % 112) == 112 - 4)
fprintf(out, "\"\n \"");
}
fprintf(out, "\";\n\n");
}
else if (source_encoding == SourceEncoding_U8)
{
// As individual bytes, not subject to endianness issues.
fprintf(out, "// Exported using binary_to_compressed_c.exe -u8 \"%s\" %s\n", filename, symbol);
fprintf(out, "%sconst unsigned int %s_%ssize = %d;\n", static_str, symbol, compressed_str, (int)compressed_sz);
fprintf(out, "%sconst unsigned char %s_%sdata[%d] =\n{", static_str, symbol, compressed_str, (int)compressed_sz);
int column = 0;
for (int i = 0; i < compressed_sz; i++)
{
unsigned char d = *(unsigned char*)(compressed + i);
if (column == 0)
fprintf(out, "\n ");
column += fprintf(out, "%d,", d);
if (column >= 180)
column = 0;
}
fprintf(out, "\n};\n\n");
}
else if (source_encoding == SourceEncoding_U32)
{
// As integers
fprintf(out, "// Exported using binary_to_compressed_c.exe -u32 \"%s\" %s\n", filename, symbol);
fprintf(out, "%sconst unsigned int %s_%ssize = %d;\n", static_str, symbol, compressed_str, (int)compressed_sz);
fprintf(out, "%sconst unsigned int %s_%sdata[%d/4] =\n{", static_str, symbol, compressed_str, (int)((compressed_sz + 3) / 4)*4);
int column = 0;
for (int i = 0; i < compressed_sz; i += 4)
{
unsigned int d = *(unsigned int*)(compressed + i);
if ((column++ % 14) == 0)
fprintf(out, "\n 0x%08x, ", d);
else
fprintf(out, "0x%08x, ", d);
}
fprintf(out, "\n};\n\n");
}
// Cleanup
delete[] data;
if (use_compression)
delete[] compressed;
return true;
}
// stb_compress* from stb.h - definition
//////////////////// compressor ///////////////////////
static stb_uint stb_adler32(stb_uint adler32, stb_uchar *buffer, stb_uint buflen)
{
const unsigned long ADLER_MOD = 65521;
unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16;
unsigned long blocklen, i;
blocklen = buflen % 5552;
while (buflen) {
for (i=0; i + 7 < blocklen; i += 8) {
s1 += buffer[0], s2 += s1;
s1 += buffer[1], s2 += s1;
s1 += buffer[2], s2 += s1;
s1 += buffer[3], s2 += s1;
s1 += buffer[4], s2 += s1;
s1 += buffer[5], s2 += s1;
s1 += buffer[6], s2 += s1;
s1 += buffer[7], s2 += s1;
buffer += 8;
}
for (; i < blocklen; ++i)
s1 += *buffer++, s2 += s1;
s1 %= ADLER_MOD, s2 %= ADLER_MOD;
buflen -= blocklen;
blocklen = 5552;
}
return (s2 << 16) + s1;
}
static unsigned int stb_matchlen(stb_uchar *m1, stb_uchar *m2, stb_uint maxlen)
{
stb_uint i;
for (i=0; i < maxlen; ++i)
if (m1[i] != m2[i]) return i;
return i;
}
// simple implementation that just takes the source data in a big block
static stb_uchar *stb__out;
static FILE *stb__outfile;
static stb_uint stb__outbytes;
static void stb__write(unsigned char v)
{
fputc(v, stb__outfile);
++stb__outbytes;
}
//#define stb_out(v) (stb__out ? *stb__out++ = (stb_uchar) (v) : stb__write((stb_uchar) (v)))
#define stb_out(v) do { if (stb__out) *stb__out++ = (stb_uchar) (v); else stb__write((stb_uchar) (v)); } while (0)
static void stb_out2(stb_uint v) { stb_out(v >> 8); stb_out(v); }
static void stb_out3(stb_uint v) { stb_out(v >> 16); stb_out(v >> 8); stb_out(v); }
static void stb_out4(stb_uint v) { stb_out(v >> 24); stb_out(v >> 16); stb_out(v >> 8 ); stb_out(v); }
static void outliterals(stb_uchar *in, int numlit)
{
while (numlit > 65536) {
outliterals(in,65536);
in += 65536;
numlit -= 65536;
}
if (numlit == 0) ;
else if (numlit <= 32) stb_out (0x000020 + numlit-1);
else if (numlit <= 2048) stb_out2(0x000800 + numlit-1);
else /* numlit <= 65536) */ stb_out3(0x070000 + numlit-1);
if (stb__out) {
memcpy(stb__out,in,numlit);
stb__out += numlit;
} else
fwrite(in, 1, numlit, stb__outfile);
}
static int stb__window = 0x40000; // 256K
static int stb_not_crap(int best, int dist)
{
return ((best > 2 && dist <= 0x00100)
|| (best > 5 && dist <= 0x04000)
|| (best > 7 && dist <= 0x80000));
}
static stb_uint stb__hashsize = 32768;
// note that you can play with the hashing functions all you
// want without needing to change the decompressor
#define stb__hc(q,h,c) (((h) << 7) + ((h) >> 25) + q[c])
#define stb__hc2(q,h,c,d) (((h) << 14) + ((h) >> 18) + (q[c] << 7) + q[d])
#define stb__hc3(q,c,d,e) ((q[c] << 14) + (q[d] << 7) + q[e])
static unsigned int stb__running_adler;
static int stb_compress_chunk(stb_uchar *history,
stb_uchar *start,
stb_uchar *end,
int length,
int *pending_literals,
stb_uchar **chash,
stb_uint mask)
{
(void)history;
int window = stb__window;
stb_uint match_max;
stb_uchar *lit_start = start - *pending_literals;
stb_uchar *q = start;
#define STB__SCRAMBLE(h) (((h) + ((h) >> 16)) & mask)
// stop short of the end so we don't scan off the end doing
// the hashing; this means we won't compress the last few bytes
// unless they were part of something longer
while (q < start+length && q+12 < end) {
int m;
stb_uint h1,h2,h3,h4, h;
stb_uchar *t;
int best = 2, dist=0;
if (q+65536 > end)
match_max = (stb_uint)(end-q);
else
match_max = 65536;
#define stb__nc(b,d) ((d) <= window && ((b) > 9 || stb_not_crap((int)(b),(int)(d))))
#define STB__TRY(t,p) /* avoid retrying a match we already tried */ \
if (p ? dist != (int)(q-t) : 1) \
if ((m = stb_matchlen(t, q, match_max)) > best) \
if (stb__nc(m,q-(t))) \
best = m, dist = (int)(q - (t))
// rather than search for all matches, only try 4 candidate locations,
// chosen based on 4 different hash functions of different lengths.
// this strategy is inspired by LZO; hashing is unrolled here using the
// 'hc' macro
h = stb__hc3(q,0, 1, 2); h1 = STB__SCRAMBLE(h);
t = chash[h1]; if (t) STB__TRY(t,0);
h = stb__hc2(q,h, 3, 4); h2 = STB__SCRAMBLE(h);
h = stb__hc2(q,h, 5, 6); t = chash[h2]; if (t) STB__TRY(t,1);
h = stb__hc2(q,h, 7, 8); h3 = STB__SCRAMBLE(h);
h = stb__hc2(q,h, 9,10); t = chash[h3]; if (t) STB__TRY(t,1);
h = stb__hc2(q,h,11,12); h4 = STB__SCRAMBLE(h);
t = chash[h4]; if (t) STB__TRY(t,1);
// because we use a shared hash table, can only update it
// _after_ we've probed all of them
chash[h1] = chash[h2] = chash[h3] = chash[h4] = q;
if (best > 2)
assert(dist > 0);
// see if our best match qualifies
if (best < 3) { // fast path literals
++q;
} else if (best > 2 && best <= 0x80 && dist <= 0x100) {
outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best);
stb_out(0x80 + best-1);
stb_out(dist-1);
} else if (best > 5 && best <= 0x100 && dist <= 0x4000) {
outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best);
stb_out2(0x4000 + dist-1);
stb_out(best-1);
} else if (best > 7 && best <= 0x100 && dist <= 0x80000) {
outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best);
stb_out3(0x180000 + dist-1);
stb_out(best-1);
} else if (best > 8 && best <= 0x10000 && dist <= 0x80000) {
outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best);
stb_out3(0x100000 + dist-1);
stb_out2(best-1);
} else if (best > 9 && dist <= 0x1000000) {
if (best > 65536) best = 65536;
outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best);
if (best <= 0x100) {
stb_out(0x06);
stb_out3(dist-1);
stb_out(best-1);
} else {
stb_out(0x04);
stb_out3(dist-1);
stb_out2(best-1);
}
} else { // fallback literals if no match was a balanced tradeoff
++q;
}
}
// if we didn't get all the way, add the rest to literals
if (q-start < length)
q = start+length;
// the literals are everything from lit_start to q
*pending_literals = (int)(q - lit_start);
stb__running_adler = stb_adler32(stb__running_adler, start, (stb_uint)(q - start));
return (int)(q - start);
}
static int stb_compress_inner(stb_uchar *input, stb_uint length)
{
int literals = 0;
stb_uint len,i;
stb_uchar **chash;
chash = (stb_uchar**) malloc(stb__hashsize * sizeof(stb_uchar*));
if (chash == nullptr) return 0; // failure
for (i=0; i < stb__hashsize; ++i)
chash[i] = nullptr;
// stream signature
stb_out(0x57); stb_out(0xbc);
stb_out2(0);
stb_out4(0); // 64-bit length requires 32-bit leading 0
stb_out4(length);
stb_out4(stb__window);
stb__running_adler = 1;
len = stb_compress_chunk(input, input, input+length, length, &literals, chash, stb__hashsize-1);
assert(len == length);
outliterals(input+length - literals, literals);
free(chash);
stb_out2(0x05fa); // end opcode
stb_out4(stb__running_adler);
return 1; // success
}
stb_uint stb_compress(stb_uchar *out, stb_uchar *input, stb_uint length)
{
stb__out = out;
stb__outfile = nullptr;
stb_compress_inner(input, length);
return (stb_uint)(stb__out - out);
}

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# imgui_freetype
Build font atlases using FreeType instead of stb_truetype (which is the default font rasterizer).
<br>by @vuhdo, @mikesart, @ocornut.
### Usage
1. Get latest FreeType binaries or build yourself (under Windows you may use vcpkg with `vcpkg install freetype --triplet=x64-windows`, `vcpkg integrate install`).
2. Add imgui_freetype.h/cpp alongside your project files.
3. Add `#define IMGUI_ENABLE_FREETYPE` in your [imconfig.h](https://github.com/ocornut/imgui/blob/master/imconfig.h) file
### About Gamma Correct Blending
FreeType assumes blending in linear space rather than gamma space.
See FreeType note for [FT_Render_Glyph](https://freetype.org/freetype2/docs/reference/ft2-glyph_retrieval.html#ft_render_glyph).
For correct results you need to be using sRGB and convert to linear space in the pixel shader output.
The default Dear ImGui styles will be impacted by this change (alpha values will need tweaking).
### Testbed for toying with settings (for developers)
See https://gist.github.com/ocornut/b3a9ecf13502fd818799a452969649ad
### Known issues
- Oversampling settings are ignored but also not so much necessary with the higher quality rendering.
### Comparison
Small, thin anti-aliased fonts typically benefit a lot from FreeType's hinting:
![comparing_font_rasterizers](https://user-images.githubusercontent.com/8225057/107550178-fef87f00-6bd0-11eb-8d09-e2edb2f0ccfc.gif)
### Colorful glyphs/emojis
You can use the `ImGuiFreeTypeBuilderFlags_LoadColor` flag to load certain colorful glyphs. See the
["Using Colorful Glyphs/Emojis"](https://github.com/ocornut/imgui/blob/master/docs/FONTS.md#using-colorful-glyphsemojis) section of FONTS.md.
![colored glyphs](https://user-images.githubusercontent.com/8225057/106171241-9dc4ba80-6191-11eb-8a69-ca1467b206d1.png)
### Using OpenType SVG fonts (SVGinOT)
- *SVG in Open Type* is a standard by Adobe and Mozilla for color OpenType and Open Font Format fonts. It allows font creators to embed complete SVG files within a font enabling full color and even animations.
- Popular fonts such as [twemoji](https://github.com/13rac1/twemoji-color-font) and fonts made with [scfbuild](https://github.com/13rac1/scfbuild) is SVGinOT.
- Two alternatives are possible to render SVG fonts: use "lunasvg" or "plutosvg". plutosvg will support some more fonts (e.g. NotoColorEmoji-Regular) and may load them faster.
#### Using lunasvg
Requires: [lunasvg](https://github.com/sammycage/lunasvg) v2.3.2 and above
- Add `#define IMGUI_ENABLE_FREETYPE_LUNASVG` in your `imconfig.h`.
- Get latest lunasvg binaries or build yourself. Under Windows you may use vcpkg with: `vcpkg install lunasvg --triplet=x64-windows`.
#### Using plutosvg (and plutovg)
- Add `#define IMGUI_ENABLE_FREETYPE_PLUTOSVG` in your `imconfig.h`.
- Get latest plutosvg binaries or build yourself. Under Windows you may use vcpkg with: `vcpkg install plutosvg --triplet=x64-windows`. Alternatively, if you build imgui from vcpkg, you just need to enable the plutosvg feature: `vcpkg install imgui[plutosvg] --triplet=x64-windows`
- If you prefer to build plutosvg manually:
- Compilation hints for plutovg: Compile all source files in `plutovg/source/*.c` + Add include directory: `plutovg/include` + `plutovg/stb`
- Compilation hints for plutosvg: Compile `plutosvg/source/plutosvg.c` + Add include directory: `plutosvg/source` + Add define: `PLUTOSVG_HAS_FREETYPE` + Link with: plutovg, freetype

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// dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder)
// (code)
// Get the latest version at https://github.com/ocornut/imgui/tree/master/misc/freetype
// Original code by @vuhdo (Aleksei Skriabin). Improvements by @mikesart. Maintained since 2019 by @ocornut.
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2024/10/17: added plutosvg support for SVG Fonts (seems faster/better than lunasvg). Enable by using '#define IMGUI_ENABLE_FREETYPE_PLUTOSVG'. (#7927)
// 2023/11/13: added support for ImFontConfig::RasterizationDensity field for scaling render density without scaling metrics.
// 2023/08/01: added support for SVG fonts, enable by using '#define IMGUI_ENABLE_FREETYPE_LUNASVG'. (#6591)
// 2023/01/04: fixed a packing issue which in some occurrences would prevent large amount of glyphs from being packed correctly.
// 2021/08/23: fixed crash when FT_Render_Glyph() fails to render a glyph and returns nullptr.
// 2021/03/05: added ImGuiFreeTypeBuilderFlags_Bitmap to load bitmap glyphs.
// 2021/03/02: set 'atlas->TexPixelsUseColors = true' to help some backends with deciding of a preferred texture format.
// 2021/01/28: added support for color-layered glyphs via ImGuiFreeTypeBuilderFlags_LoadColor (require Freetype 2.10+).
// 2021/01/26: simplified integration by using '#define IMGUI_ENABLE_FREETYPE'. renamed ImGuiFreeType::XXX flags to ImGuiFreeTypeBuilderFlags_XXX for consistency with other API. removed ImGuiFreeType::BuildFontAtlas().
// 2020/06/04: fix for rare case where FT_Get_Char_Index() succeed but FT_Load_Glyph() fails.
// 2019/02/09: added RasterizerFlags::Monochrome flag to disable font anti-aliasing (combine with ::MonoHinting for best results!)
// 2019/01/15: added support for imgui allocators + added FreeType only override function SetAllocatorFunctions().
// 2019/01/10: re-factored to match big update in STB builder. fixed texture height waste. fixed redundant glyphs when merging. support for glyph padding.
// 2018/06/08: added support for ImFontConfig::GlyphMinAdvanceX, GlyphMaxAdvanceX.
// 2018/02/04: moved to main imgui repository (away from http://www.github.com/ocornut/imgui_club)
// 2018/01/22: fix for addition of ImFontAtlas::TexUvscale member.
// 2017/10/22: minor inconsequential change to match change in master (removed an unnecessary statement).
// 2017/09/26: fixes for imgui internal changes.
// 2017/08/26: cleanup, optimizations, support for ImFontConfig::RasterizerFlags, ImFontConfig::RasterizerMultiply.
// 2017/08/16: imported from https://github.com/Vuhdo/imgui_freetype into http://www.github.com/ocornut/imgui_club, updated for latest changes in ImFontAtlas, minor tweaks.
// About Gamma Correct Blending:
// - FreeType assumes blending in linear space rather than gamma space.
// - See https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_Render_Glyph
// - For correct results you need to be using sRGB and convert to linear space in the pixel shader output.
// - The default dear imgui styles will be impacted by this change (alpha values will need tweaking).
// FIXME: cfg.OversampleH, OversampleV are not supported, but generally not necessary with this rasterizer because Hinting makes everything look better.
#include "imgui.h"
#ifndef IMGUI_DISABLE
#include "imgui_freetype.h"
#include "imgui_internal.h" // ImMin,ImMax,ImFontAtlasBuild*,
#include <stdint.h>
#include <ft2build.h>
#include FT_FREETYPE_H // <freetype/freetype.h>
#include FT_MODULE_H // <freetype/ftmodapi.h>
#include FT_GLYPH_H // <freetype/ftglyph.h>
#include FT_SYNTHESIS_H // <freetype/ftsynth.h>
// Handle LunaSVG and PlutoSVG
#if defined(IMGUI_ENABLE_FREETYPE_LUNASVG) && defined(IMGUI_ENABLE_FREETYPE_PLUTOSVG)
#error "Cannot enable both IMGUI_ENABLE_FREETYPE_LUNASVG and IMGUI_ENABLE_FREETYPE_PLUTOSVG"
#endif
#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
#include FT_OTSVG_H // <freetype/otsvg.h>
#include FT_BBOX_H // <freetype/ftbbox.h>
#include <lunasvg.h>
#endif
#ifdef IMGUI_ENABLE_FREETYPE_PLUTOSVG
#include <plutosvg.h>
#endif
#if defined(IMGUI_ENABLE_FREETYPE_LUNASVG) || defined (IMGUI_ENABLE_FREETYPE_PLUTOSVG)
#if !((FREETYPE_MAJOR >= 2) && (FREETYPE_MINOR >= 12))
#error IMGUI_ENABLE_FREETYPE_PLUTOSVG or IMGUI_ENABLE_FREETYPE_LUNASVG requires FreeType version >= 2.12
#endif
#endif
#ifdef _MSC_VER
#pragma warning (push)
#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
#pragma warning (disable: 26812) // [Static Analyzer] The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' (Enum.3).
#endif
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind
#pragma GCC diagnostic ignored "-Wunused-function" // warning: 'xxxx' defined but not used
#ifndef __clang__
#pragma GCC diagnostic ignored "-Wsubobject-linkage" // warning: 'xxxx' has a field 'xxxx' whose type uses the anonymous namespace
#endif
#endif
//-------------------------------------------------------------------------
// Data
//-------------------------------------------------------------------------
// Default memory allocators
static void* ImGuiFreeTypeDefaultAllocFunc(size_t size, void* user_data) { IM_UNUSED(user_data); return IM_ALLOC(size); }
static void ImGuiFreeTypeDefaultFreeFunc(void* ptr, void* user_data) { IM_UNUSED(user_data); IM_FREE(ptr); }
// Current memory allocators
static void* (*GImGuiFreeTypeAllocFunc)(size_t size, void* user_data) = ImGuiFreeTypeDefaultAllocFunc;
static void (*GImGuiFreeTypeFreeFunc)(void* ptr, void* user_data) = ImGuiFreeTypeDefaultFreeFunc;
static void* GImGuiFreeTypeAllocatorUserData = nullptr;
// Lunasvg support
#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
static FT_Error ImGuiLunasvgPortInit(FT_Pointer* state);
static void ImGuiLunasvgPortFree(FT_Pointer* state);
static FT_Error ImGuiLunasvgPortRender(FT_GlyphSlot slot, FT_Pointer* _state);
static FT_Error ImGuiLunasvgPortPresetSlot(FT_GlyphSlot slot, FT_Bool cache, FT_Pointer* _state);
#endif
//-------------------------------------------------------------------------
// Code
//-------------------------------------------------------------------------
#define FT_CEIL(X) (((X + 63) & -64) / 64) // From SDL_ttf: Handy routines for converting from fixed point
#define FT_SCALEFACTOR 64.0f
namespace
{
// Glyph metrics:
// --------------
//
// xmin xmax
// | |
// |<-------- width -------->|
// | |
// | +-------------------------+----------------- ymax
// | | ggggggggg ggggg | ^ ^
// | | g:::::::::ggg::::g | | |
// | | g:::::::::::::::::g | | |
// | | g::::::ggggg::::::gg | | |
// | | g:::::g g:::::g | | |
// offsetX -|-------->| g:::::g g:::::g | offsetY |
// | | g:::::g g:::::g | | |
// | | g::::::g g:::::g | | |
// | | g:::::::ggggg:::::g | | |
// | | g::::::::::::::::g | | height
// | | gg::::::::::::::g | | |
// baseline ---*---------|---- gggggggg::::::g-----*-------- |
// / | | g:::::g | |
// origin | | gggggg g:::::g | |
// | | g:::::gg gg:::::g | |
// | | g::::::ggg:::::::g | |
// | | gg:::::::::::::g | |
// | | ggg::::::ggg | |
// | | gggggg | v
// | +-------------------------+----------------- ymin
// | |
// |------------- advanceX ----------->|
// A structure that describe a glyph.
struct GlyphInfo
{
int Width; // Glyph's width in pixels.
int Height; // Glyph's height in pixels.
FT_Int OffsetX; // The distance from the origin ("pen position") to the left of the glyph.
FT_Int OffsetY; // The distance from the origin to the top of the glyph. This is usually a value < 0.
float AdvanceX; // The distance from the origin to the origin of the next glyph. This is usually a value > 0.
bool IsColored; // The glyph is colored
};
// Font parameters and metrics.
struct FontInfo
{
uint32_t PixelHeight; // Size this font was generated with.
float Ascender; // The pixel extents above the baseline in pixels (typically positive).
float Descender; // The extents below the baseline in pixels (typically negative).
float LineSpacing; // The baseline-to-baseline distance. Note that it usually is larger than the sum of the ascender and descender taken as absolute values. There is also no guarantee that no glyphs extend above or below subsequent baselines when using this distance. Think of it as a value the designer of the font finds appropriate.
float LineGap; // The spacing in pixels between one row's descent and the next row's ascent.
float MaxAdvanceWidth; // This field gives the maximum horizontal cursor advance for all glyphs in the font.
};
// FreeType glyph rasterizer.
// NB: No ctor/dtor, explicitly call Init()/Shutdown()
struct FreeTypeFont
{
bool InitFont(FT_Library ft_library, const ImFontConfig& src, unsigned int extra_user_flags); // Initialize from an external data buffer. Doesn't copy data, and you must ensure it stays valid up to this object lifetime.
void CloseFont();
void SetPixelHeight(int pixel_height); // Change font pixel size. All following calls to RasterizeGlyph() will use this size
const FT_Glyph_Metrics* LoadGlyph(uint32_t in_codepoint);
const FT_Bitmap* RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info);
void BlitGlyph(const FT_Bitmap* ft_bitmap, uint32_t* dst, uint32_t dst_pitch, unsigned char* multiply_table = nullptr);
FreeTypeFont() { memset((void*)this, 0, sizeof(*this)); }
~FreeTypeFont() { CloseFont(); }
// [Internals]
FontInfo Info; // Font descriptor of the current font.
FT_Face Face;
unsigned int UserFlags; // = ImFontConfig::RasterizerFlags
FT_Int32 LoadFlags;
FT_Render_Mode RenderMode;
float RasterizationDensity;
float InvRasterizationDensity;
};
bool FreeTypeFont::InitFont(FT_Library ft_library, const ImFontConfig& src, unsigned int extra_font_builder_flags)
{
FT_Error error = FT_New_Memory_Face(ft_library, (uint8_t*)src.FontData, (uint32_t)src.FontDataSize, (uint32_t)src.FontNo, &Face);
if (error != 0)
return false;
error = FT_Select_Charmap(Face, FT_ENCODING_UNICODE);
if (error != 0)
return false;
// Convert to FreeType flags (NB: Bold and Oblique are processed separately)
UserFlags = src.FontBuilderFlags | extra_font_builder_flags;
LoadFlags = 0;
if ((UserFlags & ImGuiFreeTypeBuilderFlags_Bitmap) == 0)
LoadFlags |= FT_LOAD_NO_BITMAP;
if (UserFlags & ImGuiFreeTypeBuilderFlags_NoHinting)
LoadFlags |= FT_LOAD_NO_HINTING;
if (UserFlags & ImGuiFreeTypeBuilderFlags_NoAutoHint)
LoadFlags |= FT_LOAD_NO_AUTOHINT;
if (UserFlags & ImGuiFreeTypeBuilderFlags_ForceAutoHint)
LoadFlags |= FT_LOAD_FORCE_AUTOHINT;
if (UserFlags & ImGuiFreeTypeBuilderFlags_LightHinting)
LoadFlags |= FT_LOAD_TARGET_LIGHT;
else if (UserFlags & ImGuiFreeTypeBuilderFlags_MonoHinting)
LoadFlags |= FT_LOAD_TARGET_MONO;
else
LoadFlags |= FT_LOAD_TARGET_NORMAL;
if (UserFlags & ImGuiFreeTypeBuilderFlags_Monochrome)
RenderMode = FT_RENDER_MODE_MONO;
else
RenderMode = FT_RENDER_MODE_NORMAL;
if (UserFlags & ImGuiFreeTypeBuilderFlags_LoadColor)
LoadFlags |= FT_LOAD_COLOR;
RasterizationDensity = src.RasterizerDensity;
InvRasterizationDensity = 1.0f / RasterizationDensity;
memset(&Info, 0, sizeof(Info));
SetPixelHeight((uint32_t)src.SizePixels);
return true;
}
void FreeTypeFont::CloseFont()
{
if (Face)
{
FT_Done_Face(Face);
Face = nullptr;
}
}
void FreeTypeFont::SetPixelHeight(int pixel_height)
{
// Vuhdo: I'm not sure how to deal with font sizes properly. As far as I understand, currently ImGui assumes that the 'pixel_height'
// is a maximum height of an any given glyph, i.e. it's the sum of font's ascender and descender. Seems strange to me.
// NB: FT_Set_Pixel_Sizes() doesn't seem to get us the same result.
FT_Size_RequestRec req;
req.type = (UserFlags & ImGuiFreeTypeBuilderFlags_Bitmap) ? FT_SIZE_REQUEST_TYPE_NOMINAL : FT_SIZE_REQUEST_TYPE_REAL_DIM;
req.width = 0;
req.height = (uint32_t)(pixel_height * 64 * RasterizationDensity);
req.horiResolution = 0;
req.vertResolution = 0;
FT_Request_Size(Face, &req);
// Update font info
FT_Size_Metrics metrics = Face->size->metrics;
Info.PixelHeight = (uint32_t)(pixel_height * InvRasterizationDensity);
Info.Ascender = (float)FT_CEIL(metrics.ascender) * InvRasterizationDensity;
Info.Descender = (float)FT_CEIL(metrics.descender) * InvRasterizationDensity;
Info.LineSpacing = (float)FT_CEIL(metrics.height) * InvRasterizationDensity;
Info.LineGap = (float)FT_CEIL(metrics.height - metrics.ascender + metrics.descender) * InvRasterizationDensity;
Info.MaxAdvanceWidth = (float)FT_CEIL(metrics.max_advance) * InvRasterizationDensity;
}
const FT_Glyph_Metrics* FreeTypeFont::LoadGlyph(uint32_t codepoint)
{
uint32_t glyph_index = FT_Get_Char_Index(Face, codepoint);
if (glyph_index == 0)
return nullptr;
// If this crash for you: FreeType 2.11.0 has a crash bug on some bitmap/colored fonts.
// - https://gitlab.freedesktop.org/freetype/freetype/-/issues/1076
// - https://github.com/ocornut/imgui/issues/4567
// - https://github.com/ocornut/imgui/issues/4566
// You can use FreeType 2.10, or the patched version of 2.11.0 in VcPkg, or probably any upcoming FreeType version.
FT_Error error = FT_Load_Glyph(Face, glyph_index, LoadFlags);
if (error)
return nullptr;
// Need an outline for this to work
FT_GlyphSlot slot = Face->glyph;
#if defined(IMGUI_ENABLE_FREETYPE_LUNASVG) || defined(IMGUI_ENABLE_FREETYPE_PLUTOSVG)
IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP || slot->format == FT_GLYPH_FORMAT_SVG);
#else
#if ((FREETYPE_MAJOR >= 2) && (FREETYPE_MINOR >= 12))
IM_ASSERT(slot->format != FT_GLYPH_FORMAT_SVG && "The font contains SVG glyphs, you'll need to enable IMGUI_ENABLE_FREETYPE_PLUTOSVG or IMGUI_ENABLE_FREETYPE_LUNASVG in imconfig.h and install required libraries in order to use this font");
#endif
IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP);
#endif // IMGUI_ENABLE_FREETYPE_LUNASVG
// Apply convenience transform (this is not picking from real "Bold"/"Italic" fonts! Merely applying FreeType helper transform. Oblique == Slanting)
if (UserFlags & ImGuiFreeTypeBuilderFlags_Bold)
FT_GlyphSlot_Embolden(slot);
if (UserFlags & ImGuiFreeTypeBuilderFlags_Oblique)
{
FT_GlyphSlot_Oblique(slot);
//FT_BBox bbox;
//FT_Outline_Get_BBox(&slot->outline, &bbox);
//slot->metrics.width = bbox.xMax - bbox.xMin;
//slot->metrics.height = bbox.yMax - bbox.yMin;
}
return &slot->metrics;
}
const FT_Bitmap* FreeTypeFont::RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info)
{
FT_GlyphSlot slot = Face->glyph;
FT_Error error = FT_Render_Glyph(slot, RenderMode);
if (error != 0)
return nullptr;
FT_Bitmap* ft_bitmap = &Face->glyph->bitmap;
out_glyph_info->Width = (int)ft_bitmap->width;
out_glyph_info->Height = (int)ft_bitmap->rows;
out_glyph_info->OffsetX = Face->glyph->bitmap_left;
out_glyph_info->OffsetY = -Face->glyph->bitmap_top;
out_glyph_info->AdvanceX = (float)slot->advance.x / FT_SCALEFACTOR;
out_glyph_info->IsColored = (ft_bitmap->pixel_mode == FT_PIXEL_MODE_BGRA);
return ft_bitmap;
}
void FreeTypeFont::BlitGlyph(const FT_Bitmap* ft_bitmap, uint32_t* dst, uint32_t dst_pitch, unsigned char* multiply_table)
{
IM_ASSERT(ft_bitmap != nullptr);
const uint32_t w = ft_bitmap->width;
const uint32_t h = ft_bitmap->rows;
const uint8_t* src = ft_bitmap->buffer;
const uint32_t src_pitch = ft_bitmap->pitch;
switch (ft_bitmap->pixel_mode)
{
case FT_PIXEL_MODE_GRAY: // Grayscale image, 1 byte per pixel.
{
if (multiply_table == nullptr)
{
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
for (uint32_t x = 0; x < w; x++)
dst[x] = IM_COL32(255, 255, 255, src[x]);
}
else
{
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
for (uint32_t x = 0; x < w; x++)
dst[x] = IM_COL32(255, 255, 255, multiply_table[src[x]]);
}
break;
}
case FT_PIXEL_MODE_MONO: // Monochrome image, 1 bit per pixel. The bits in each byte are ordered from MSB to LSB.
{
uint8_t color0 = multiply_table ? multiply_table[0] : 0;
uint8_t color1 = multiply_table ? multiply_table[255] : 255;
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
{
uint8_t bits = 0;
const uint8_t* bits_ptr = src;
for (uint32_t x = 0; x < w; x++, bits <<= 1)
{
if ((x & 7) == 0)
bits = *bits_ptr++;
dst[x] = IM_COL32(255, 255, 255, (bits & 0x80) ? color1 : color0);
}
}
break;
}
case FT_PIXEL_MODE_BGRA:
{
// FIXME: Converting pre-multiplied alpha to straight. Doesn't smell good.
#define DE_MULTIPLY(color, alpha) ImMin((ImU32)(255.0f * (float)color / (float)(alpha + FLT_MIN) + 0.5f), 255u)
if (multiply_table == nullptr)
{
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
for (uint32_t x = 0; x < w; x++)
{
uint8_t r = src[x * 4 + 2], g = src[x * 4 + 1], b = src[x * 4], a = src[x * 4 + 3];
dst[x] = IM_COL32(DE_MULTIPLY(r, a), DE_MULTIPLY(g, a), DE_MULTIPLY(b, a), a);
}
}
else
{
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
{
for (uint32_t x = 0; x < w; x++)
{
uint8_t r = src[x * 4 + 2], g = src[x * 4 + 1], b = src[x * 4], a = src[x * 4 + 3];
dst[x] = IM_COL32(multiply_table[DE_MULTIPLY(r, a)], multiply_table[DE_MULTIPLY(g, a)], multiply_table[DE_MULTIPLY(b, a)], multiply_table[a]);
}
}
}
#undef DE_MULTIPLY
break;
}
default:
IM_ASSERT(0 && "FreeTypeFont::BlitGlyph(): Unknown bitmap pixel mode!");
}
}
} // namespace
#ifndef STB_RECT_PACK_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
#ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
#define STBRP_ASSERT(x) do { IM_ASSERT(x); } while (0)
#define STBRP_STATIC
#define STB_RECT_PACK_IMPLEMENTATION
#endif
#ifdef IMGUI_STB_RECT_PACK_FILENAME
#include IMGUI_STB_RECT_PACK_FILENAME
#else
#include "imstb_rectpack.h"
#endif
#endif
struct ImFontBuildSrcGlyphFT
{
GlyphInfo Info;
uint32_t Codepoint;
unsigned int* BitmapData; // Point within one of the dst_tmp_bitmap_buffers[] array
ImFontBuildSrcGlyphFT() { memset((void*)this, 0, sizeof(*this)); }
};
struct ImFontBuildSrcDataFT
{
FreeTypeFont Font;
stbrp_rect* Rects; // Rectangle to pack. We first fill in their size and the packer will give us their position.
const ImWchar* SrcRanges; // Ranges as requested by user (user is allowed to request too much, e.g. 0x0020..0xFFFF)
int DstIndex; // Index into atlas->Fonts[] and dst_tmp_array[]
int GlyphsHighest; // Highest requested codepoint
int GlyphsCount; // Glyph count (excluding missing glyphs and glyphs already set by an earlier source font)
ImBitVector GlyphsSet; // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)
ImVector<ImFontBuildSrcGlyphFT> GlyphsList;
};
// Temporary data for one destination ImFont* (multiple source fonts can be merged into one destination ImFont)
struct ImFontBuildDstDataFT
{
int SrcCount; // Number of source fonts targeting this destination font.
int GlyphsHighest;
int GlyphsCount;
ImBitVector GlyphsSet; // This is used to resolve collision when multiple sources are merged into a same destination font.
};
bool ImFontAtlasBuildWithFreeTypeEx(FT_Library ft_library, ImFontAtlas* atlas, unsigned int extra_flags)
{
IM_ASSERT(atlas->Sources.Size > 0);
ImFontAtlasBuildInit(atlas);
// Clear atlas
atlas->TexID = 0;
atlas->TexWidth = atlas->TexHeight = 0;
atlas->TexUvScale = ImVec2(0.0f, 0.0f);
atlas->TexUvWhitePixel = ImVec2(0.0f, 0.0f);
atlas->ClearTexData();
// Temporary storage for building
bool src_load_color = false;
ImVector<ImFontBuildSrcDataFT> src_tmp_array;
ImVector<ImFontBuildDstDataFT> dst_tmp_array;
src_tmp_array.resize(atlas->Sources.Size);
dst_tmp_array.resize(atlas->Fonts.Size);
memset((void*)src_tmp_array.Data, 0, (size_t)src_tmp_array.size_in_bytes());
memset((void*)dst_tmp_array.Data, 0, (size_t)dst_tmp_array.size_in_bytes());
// 1. Initialize font loading structure, check font data validity
for (int src_i = 0; src_i < atlas->Sources.Size; src_i++)
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
ImFontConfig& src = atlas->Sources[src_i];
FreeTypeFont& font_face = src_tmp.Font;
IM_ASSERT(src.DstFont && (!src.DstFont->IsLoaded() || src.DstFont->ContainerAtlas == atlas));
// Find index from src.DstFont (we allow the user to set cfg.DstFont. Also it makes casual debugging nicer than when storing indices)
src_tmp.DstIndex = -1;
for (int output_i = 0; output_i < atlas->Fonts.Size && src_tmp.DstIndex == -1; output_i++)
if (src.DstFont == atlas->Fonts[output_i])
src_tmp.DstIndex = output_i;
IM_ASSERT(src_tmp.DstIndex != -1); // src.DstFont not pointing within atlas->Fonts[] array?
if (src_tmp.DstIndex == -1)
return false;
// Load font
if (!font_face.InitFont(ft_library, src, extra_flags))
return false;
// Measure highest codepoints
src_load_color |= (src.FontBuilderFlags & ImGuiFreeTypeBuilderFlags_LoadColor) != 0;
ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
src_tmp.SrcRanges = src.GlyphRanges ? src.GlyphRanges : atlas->GetGlyphRangesDefault();
for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
{
// Check for valid range. This may also help detect *some* dangling pointers, because a common
// user error is to setup ImFontConfig::GlyphRanges with a pointer to data that isn't persistent,
// or to forget to zero-terminate the glyph range array.
IM_ASSERT(src_range[0] <= src_range[1] && "Invalid range: is your glyph range array persistent? it is zero-terminated?");
src_tmp.GlyphsHighest = ImMax(src_tmp.GlyphsHighest, (int)src_range[1]);
}
dst_tmp.SrcCount++;
dst_tmp.GlyphsHighest = ImMax(dst_tmp.GlyphsHighest, src_tmp.GlyphsHighest);
}
// 2. For every requested codepoint, check for their presence in the font data, and handle redundancy or overlaps between source fonts to avoid unused glyphs.
int total_glyphs_count = 0;
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
src_tmp.GlyphsSet.Create(src_tmp.GlyphsHighest + 1);
if (dst_tmp.GlyphsSet.Storage.empty())
dst_tmp.GlyphsSet.Create(dst_tmp.GlyphsHighest + 1);
for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
for (int codepoint = src_range[0]; codepoint <= (int)src_range[1]; codepoint++)
{
if (dst_tmp.GlyphsSet.TestBit(codepoint)) // Don't overwrite existing glyphs. We could make this an option (e.g. MergeOverwrite)
continue;
uint32_t glyph_index = FT_Get_Char_Index(src_tmp.Font.Face, codepoint); // It is actually in the font? (FIXME-OPT: We are not storing the glyph_index..)
if (glyph_index == 0)
continue;
// Add to avail set/counters
src_tmp.GlyphsCount++;
dst_tmp.GlyphsCount++;
src_tmp.GlyphsSet.SetBit(codepoint);
dst_tmp.GlyphsSet.SetBit(codepoint);
total_glyphs_count++;
}
}
// 3. Unpack our bit map into a flat list (we now have all the Unicode points that we know are requested _and_ available _and_ not overlapping another)
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
src_tmp.GlyphsList.reserve(src_tmp.GlyphsCount);
IM_ASSERT(sizeof(src_tmp.GlyphsSet.Storage.Data[0]) == sizeof(ImU32));
const ImU32* it_begin = src_tmp.GlyphsSet.Storage.begin();
const ImU32* it_end = src_tmp.GlyphsSet.Storage.end();
for (const ImU32* it = it_begin; it < it_end; it++)
if (ImU32 entries_32 = *it)
for (ImU32 bit_n = 0; bit_n < 32; bit_n++)
if (entries_32 & ((ImU32)1 << bit_n))
{
ImFontBuildSrcGlyphFT src_glyph;
src_glyph.Codepoint = (ImWchar)(((it - it_begin) << 5) + bit_n);
//src_glyph.GlyphIndex = 0; // FIXME-OPT: We had this info in the previous step and lost it..
src_tmp.GlyphsList.push_back(src_glyph);
}
src_tmp.GlyphsSet.Clear();
IM_ASSERT(src_tmp.GlyphsList.Size == src_tmp.GlyphsCount);
}
for (int dst_i = 0; dst_i < dst_tmp_array.Size; dst_i++)
dst_tmp_array[dst_i].GlyphsSet.Clear();
dst_tmp_array.clear();
// Allocate packing character data and flag packed characters buffer as non-packed (x0=y0=x1=y1=0)
// (We technically don't need to zero-clear buf_rects, but let's do it for the sake of sanity)
ImVector<stbrp_rect> buf_rects;
buf_rects.resize(total_glyphs_count);
memset(buf_rects.Data, 0, (size_t)buf_rects.size_in_bytes());
// Allocate temporary rasterization data buffers.
// We could not find a way to retrieve accurate glyph size without rendering them.
// (e.g. slot->metrics->width not always matching bitmap->width, especially considering the Oblique transform)
// We allocate in chunks of 256 KB to not waste too much extra memory ahead. Hopefully users of FreeType won't mind the temporary allocations.
const int BITMAP_BUFFERS_CHUNK_SIZE = 256 * 1024;
int buf_bitmap_current_used_bytes = 0;
ImVector<unsigned char*> buf_bitmap_buffers;
buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
// 4. Gather glyphs sizes so we can pack them in our virtual canvas.
// 8. Render/rasterize font characters into the texture
int total_surface = 0;
int buf_rects_out_n = 0;
const int pack_padding = atlas->TexGlyphPadding;
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
ImFontConfig& src = atlas->Sources[src_i];
if (src_tmp.GlyphsCount == 0)
continue;
src_tmp.Rects = &buf_rects[buf_rects_out_n];
buf_rects_out_n += src_tmp.GlyphsCount;
// Compute multiply table if requested
const bool multiply_enabled = (src.RasterizerMultiply != 1.0f);
unsigned char multiply_table[256];
if (multiply_enabled)
ImFontAtlasBuildMultiplyCalcLookupTable(multiply_table, src.RasterizerMultiply);
// Gather the sizes of all rectangles we will need to pack
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsList.Size; glyph_i++)
{
ImFontBuildSrcGlyphFT& src_glyph = src_tmp.GlyphsList[glyph_i];
const FT_Glyph_Metrics* metrics = src_tmp.Font.LoadGlyph(src_glyph.Codepoint);
if (metrics == nullptr)
continue;
// Render glyph into a bitmap (currently held by FreeType)
const FT_Bitmap* ft_bitmap = src_tmp.Font.RenderGlyphAndGetInfo(&src_glyph.Info);
if (ft_bitmap == nullptr)
continue;
// Allocate new temporary chunk if needed
const int bitmap_size_in_bytes = src_glyph.Info.Width * src_glyph.Info.Height * 4;
if (buf_bitmap_current_used_bytes + bitmap_size_in_bytes > BITMAP_BUFFERS_CHUNK_SIZE)
{
buf_bitmap_current_used_bytes = 0;
buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
}
IM_ASSERT(buf_bitmap_current_used_bytes + bitmap_size_in_bytes <= BITMAP_BUFFERS_CHUNK_SIZE); // We could probably allocate custom-sized buffer instead.
// Blit rasterized pixels to our temporary buffer and keep a pointer to it.
src_glyph.BitmapData = (unsigned int*)(buf_bitmap_buffers.back() + buf_bitmap_current_used_bytes);
buf_bitmap_current_used_bytes += bitmap_size_in_bytes;
src_tmp.Font.BlitGlyph(ft_bitmap, src_glyph.BitmapData, src_glyph.Info.Width, multiply_enabled ? multiply_table : nullptr);
src_tmp.Rects[glyph_i].w = (stbrp_coord)(src_glyph.Info.Width + pack_padding);
src_tmp.Rects[glyph_i].h = (stbrp_coord)(src_glyph.Info.Height + pack_padding);
total_surface += src_tmp.Rects[glyph_i].w * src_tmp.Rects[glyph_i].h;
}
}
for (int i = 0; i < atlas->CustomRects.Size; i++)
total_surface += (atlas->CustomRects[i].Width + pack_padding) * (atlas->CustomRects[i].Height + pack_padding);
// We need a width for the skyline algorithm, any width!
// The exact width doesn't really matter much, but some API/GPU have texture size limitations and increasing width can decrease height.
// User can override TexDesiredWidth and TexGlyphPadding if they wish, otherwise we use a simple heuristic to select the width based on expected surface.
const int surface_sqrt = (int)ImSqrt((float)total_surface) + 1;
atlas->TexHeight = 0;
if (atlas->TexDesiredWidth > 0)
atlas->TexWidth = atlas->TexDesiredWidth;
else
atlas->TexWidth = (surface_sqrt >= 4096 * 0.7f) ? 4096 : (surface_sqrt >= 2048 * 0.7f) ? 2048 : (surface_sqrt >= 1024 * 0.7f) ? 1024 : 512;
// 5. Start packing
// Pack our extra data rectangles first, so it will be on the upper-left corner of our texture (UV will have small values).
const int TEX_HEIGHT_MAX = 1024 * 32;
const int num_nodes_for_packing_algorithm = atlas->TexWidth - atlas->TexGlyphPadding;
ImVector<stbrp_node> pack_nodes;
pack_nodes.resize(num_nodes_for_packing_algorithm);
stbrp_context pack_context;
stbrp_init_target(&pack_context, atlas->TexWidth - atlas->TexGlyphPadding, TEX_HEIGHT_MAX - atlas->TexGlyphPadding, pack_nodes.Data, pack_nodes.Size);
ImFontAtlasBuildPackCustomRects(atlas, &pack_context);
// 6. Pack each source font. No rendering yet, we are working with rectangles in an infinitely tall texture at this point.
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
if (src_tmp.GlyphsCount == 0)
continue;
stbrp_pack_rects(&pack_context, src_tmp.Rects, src_tmp.GlyphsCount);
// Extend texture height and mark missing glyphs as non-packed so we won't render them.
// FIXME: We are not handling packing failure here (would happen if we got off TEX_HEIGHT_MAX or if a single if larger than TexWidth?)
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
if (src_tmp.Rects[glyph_i].was_packed)
atlas->TexHeight = ImMax(atlas->TexHeight, src_tmp.Rects[glyph_i].y + src_tmp.Rects[glyph_i].h);
}
// 7. Allocate texture
atlas->TexHeight = (atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) ? (atlas->TexHeight + 1) : ImUpperPowerOfTwo(atlas->TexHeight);
atlas->TexUvScale = ImVec2(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);
if (src_load_color)
{
size_t tex_size = (size_t)atlas->TexWidth * atlas->TexHeight * 4;
atlas->TexPixelsRGBA32 = (unsigned int*)IM_ALLOC(tex_size);
memset(atlas->TexPixelsRGBA32, 0, tex_size);
}
else
{
size_t tex_size = (size_t)atlas->TexWidth * atlas->TexHeight * 1;
atlas->TexPixelsAlpha8 = (unsigned char*)IM_ALLOC(tex_size);
memset(atlas->TexPixelsAlpha8, 0, tex_size);
}
// 8. Copy rasterized font characters back into the main texture
// 9. Setup ImFont and glyphs for runtime
bool tex_use_colors = false;
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
// When merging fonts with MergeMode=true:
// - We can have multiple input fonts writing into a same destination font.
// - dst_font->Sources is != from src which is our source configuration.
ImFontConfig& src = atlas->Sources[src_i];
ImFont* dst_font = src.DstFont;
const float ascent = src_tmp.Font.Info.Ascender;
const float descent = src_tmp.Font.Info.Descender;
ImFontAtlasBuildSetupFont(atlas, dst_font, &src, ascent, descent);
if (src_tmp.GlyphsCount == 0)
continue;
const float font_off_x = src.GlyphOffset.x;
const float font_off_y = src.GlyphOffset.y + IM_ROUND(dst_font->Ascent);
const int padding = atlas->TexGlyphPadding;
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
{
ImFontBuildSrcGlyphFT& src_glyph = src_tmp.GlyphsList[glyph_i];
stbrp_rect& pack_rect = src_tmp.Rects[glyph_i];
IM_ASSERT(pack_rect.was_packed);
if (pack_rect.w == 0 && pack_rect.h == 0)
continue;
GlyphInfo& info = src_glyph.Info;
IM_ASSERT(info.Width + padding <= pack_rect.w);
IM_ASSERT(info.Height + padding <= pack_rect.h);
const int tx = pack_rect.x + padding;
const int ty = pack_rect.y + padding;
// Register glyph
float x0 = info.OffsetX * src_tmp.Font.InvRasterizationDensity + font_off_x;
float y0 = info.OffsetY * src_tmp.Font.InvRasterizationDensity + font_off_y;
float x1 = x0 + info.Width * src_tmp.Font.InvRasterizationDensity;
float y1 = y0 + info.Height * src_tmp.Font.InvRasterizationDensity;
float u0 = (tx) / (float)atlas->TexWidth;
float v0 = (ty) / (float)atlas->TexHeight;
float u1 = (tx + info.Width) / (float)atlas->TexWidth;
float v1 = (ty + info.Height) / (float)atlas->TexHeight;
dst_font->AddGlyph(&src, (ImWchar)src_glyph.Codepoint, x0, y0, x1, y1, u0, v0, u1, v1, info.AdvanceX * src_tmp.Font.InvRasterizationDensity);
ImFontGlyph* dst_glyph = &dst_font->Glyphs.back();
IM_ASSERT(dst_glyph->Codepoint == src_glyph.Codepoint);
if (src_glyph.Info.IsColored)
dst_glyph->Colored = tex_use_colors = true;
// Blit from temporary buffer to final texture
size_t blit_src_stride = (size_t)src_glyph.Info.Width;
size_t blit_dst_stride = (size_t)atlas->TexWidth;
unsigned int* blit_src = src_glyph.BitmapData;
if (atlas->TexPixelsAlpha8 != nullptr)
{
unsigned char* blit_dst = atlas->TexPixelsAlpha8 + (ty * blit_dst_stride) + tx;
for (int y = 0; y < info.Height; y++, blit_dst += blit_dst_stride, blit_src += blit_src_stride)
for (int x = 0; x < info.Width; x++)
blit_dst[x] = (unsigned char)((blit_src[x] >> IM_COL32_A_SHIFT) & 0xFF);
}
else
{
unsigned int* blit_dst = atlas->TexPixelsRGBA32 + (ty * blit_dst_stride) + tx;
for (int y = 0; y < info.Height; y++, blit_dst += blit_dst_stride, blit_src += blit_src_stride)
for (int x = 0; x < info.Width; x++)
blit_dst[x] = blit_src[x];
}
}
src_tmp.Rects = nullptr;
}
atlas->TexPixelsUseColors = tex_use_colors;
// Cleanup
for (int buf_i = 0; buf_i < buf_bitmap_buffers.Size; buf_i++)
IM_FREE(buf_bitmap_buffers[buf_i]);
src_tmp_array.clear_destruct();
ImFontAtlasBuildFinish(atlas);
return true;
}
// FreeType memory allocation callbacks
static void* FreeType_Alloc(FT_Memory /*memory*/, long size)
{
return GImGuiFreeTypeAllocFunc((size_t)size, GImGuiFreeTypeAllocatorUserData);
}
static void FreeType_Free(FT_Memory /*memory*/, void* block)
{
GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
}
static void* FreeType_Realloc(FT_Memory /*memory*/, long cur_size, long new_size, void* block)
{
// Implement realloc() as we don't ask user to provide it.
if (block == nullptr)
return GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData);
if (new_size == 0)
{
GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
return nullptr;
}
if (new_size > cur_size)
{
void* new_block = GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData);
memcpy(new_block, block, (size_t)cur_size);
GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
return new_block;
}
return block;
}
static bool ImFontAtlasBuildWithFreeType(ImFontAtlas* atlas)
{
// FreeType memory management: https://www.freetype.org/freetype2/docs/design/design-4.html
FT_MemoryRec_ memory_rec = {};
memory_rec.user = nullptr;
memory_rec.alloc = &FreeType_Alloc;
memory_rec.free = &FreeType_Free;
memory_rec.realloc = &FreeType_Realloc;
// https://www.freetype.org/freetype2/docs/reference/ft2-module_management.html#FT_New_Library
FT_Library ft_library;
FT_Error error = FT_New_Library(&memory_rec, &ft_library);
if (error != 0)
return false;
// If you don't call FT_Add_Default_Modules() the rest of code may work, but FreeType won't use our custom allocator.
FT_Add_Default_Modules(ft_library);
#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
// Install svg hooks for FreeType
// https://freetype.org/freetype2/docs/reference/ft2-properties.html#svg-hooks
// https://freetype.org/freetype2/docs/reference/ft2-svg_fonts.html#svg_fonts
SVG_RendererHooks hooks = { ImGuiLunasvgPortInit, ImGuiLunasvgPortFree, ImGuiLunasvgPortRender, ImGuiLunasvgPortPresetSlot };
FT_Property_Set(ft_library, "ot-svg", "svg-hooks", &hooks);
#endif // IMGUI_ENABLE_FREETYPE_LUNASVG
#ifdef IMGUI_ENABLE_FREETYPE_PLUTOSVG
// With plutosvg, use provided hooks
FT_Property_Set(ft_library, "ot-svg", "svg-hooks", plutosvg_ft_svg_hooks());
#endif // IMGUI_ENABLE_FREETYPE_PLUTOSVG
bool ret = ImFontAtlasBuildWithFreeTypeEx(ft_library, atlas, atlas->FontBuilderFlags);
FT_Done_Library(ft_library);
return ret;
}
const ImFontBuilderIO* ImGuiFreeType::GetBuilderForFreeType()
{
static ImFontBuilderIO io;
io.FontBuilder_Build = ImFontAtlasBuildWithFreeType;
return &io;
}
void ImGuiFreeType::SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data)
{
GImGuiFreeTypeAllocFunc = alloc_func;
GImGuiFreeTypeFreeFunc = free_func;
GImGuiFreeTypeAllocatorUserData = user_data;
}
#ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
// For more details, see https://gitlab.freedesktop.org/freetype/freetype-demos/-/blob/master/src/rsvg-port.c
// The original code from the demo is licensed under CeCILL-C Free Software License Agreement (https://gitlab.freedesktop.org/freetype/freetype/-/blob/master/LICENSE.TXT)
struct LunasvgPortState
{
FT_Error err = FT_Err_Ok;
lunasvg::Matrix matrix;
std::unique_ptr<lunasvg::Document> svg = nullptr;
};
static FT_Error ImGuiLunasvgPortInit(FT_Pointer* _state)
{
*_state = IM_NEW(LunasvgPortState)();
return FT_Err_Ok;
}
static void ImGuiLunasvgPortFree(FT_Pointer* _state)
{
IM_DELETE(*(LunasvgPortState**)_state);
}
static FT_Error ImGuiLunasvgPortRender(FT_GlyphSlot slot, FT_Pointer* _state)
{
LunasvgPortState* state = *(LunasvgPortState**)_state;
// If there was an error while loading the svg in ImGuiLunasvgPortPresetSlot(), the renderer hook still get called, so just returns the error.
if (state->err != FT_Err_Ok)
return state->err;
// rows is height, pitch (or stride) equals to width * sizeof(int32)
lunasvg::Bitmap bitmap((uint8_t*)slot->bitmap.buffer, slot->bitmap.width, slot->bitmap.rows, slot->bitmap.pitch);
#if LUNASVG_VERSION_MAJOR >= 3
state->svg->render(bitmap, state->matrix); // state->matrix is already scaled and translated
#else
state->svg->setMatrix(state->svg->matrix().identity()); // Reset the svg matrix to the default value
state->svg->render(bitmap, state->matrix); // state->matrix is already scaled and translated
#endif
state->err = FT_Err_Ok;
return state->err;
}
static FT_Error ImGuiLunasvgPortPresetSlot(FT_GlyphSlot slot, FT_Bool cache, FT_Pointer* _state)
{
FT_SVG_Document document = (FT_SVG_Document)slot->other;
LunasvgPortState* state = *(LunasvgPortState**)_state;
FT_Size_Metrics& metrics = document->metrics;
// This function is called twice, once in the FT_Load_Glyph() and another right before ImGuiLunasvgPortRender().
// If it's the latter, don't do anything because it's // already done in the former.
if (cache)
return state->err;
state->svg = lunasvg::Document::loadFromData((const char*)document->svg_document, document->svg_document_length);
if (state->svg == nullptr)
{
state->err = FT_Err_Invalid_SVG_Document;
return state->err;
}
#if LUNASVG_VERSION_MAJOR >= 3
lunasvg::Box box = state->svg->boundingBox();
#else
lunasvg::Box box = state->svg->box();
#endif
double scale = std::min(metrics.x_ppem / box.w, metrics.y_ppem / box.h);
double xx = (double)document->transform.xx / (1 << 16);
double xy = -(double)document->transform.xy / (1 << 16);
double yx = -(double)document->transform.yx / (1 << 16);
double yy = (double)document->transform.yy / (1 << 16);
double x0 = (double)document->delta.x / 64 * box.w / metrics.x_ppem;
double y0 = -(double)document->delta.y / 64 * box.h / metrics.y_ppem;
#if LUNASVG_VERSION_MAJOR >= 3
// Scale, transform and pre-translate the matrix for the rendering step
state->matrix = lunasvg::Matrix::translated(-box.x, -box.y);
state->matrix.multiply(lunasvg::Matrix(xx, xy, yx, yy, x0, y0));
state->matrix.scale(scale, scale);
// Apply updated transformation to the bounding box
box.transform(state->matrix);
#else
// Scale and transform, we don't translate the svg yet
state->matrix.identity();
state->matrix.scale(scale, scale);
state->matrix.transform(xx, xy, yx, yy, x0, y0);
state->svg->setMatrix(state->matrix);
// Pre-translate the matrix for the rendering step
state->matrix.translate(-box.x, -box.y);
// Get the box again after the transformation
box = state->svg->box();
#endif
// Calculate the bitmap size
slot->bitmap_left = FT_Int(box.x);
slot->bitmap_top = FT_Int(-box.y);
slot->bitmap.rows = (unsigned int)(ImCeil((float)box.h));
slot->bitmap.width = (unsigned int)(ImCeil((float)box.w));
slot->bitmap.pitch = slot->bitmap.width * 4;
slot->bitmap.pixel_mode = FT_PIXEL_MODE_BGRA;
// Compute all the bearings and set them correctly. The outline is scaled already, we just need to use the bounding box.
double metrics_width = box.w;
double metrics_height = box.h;
double horiBearingX = box.x;
double horiBearingY = -box.y;
double vertBearingX = slot->metrics.horiBearingX / 64.0 - slot->metrics.horiAdvance / 64.0 / 2.0;
double vertBearingY = (slot->metrics.vertAdvance / 64.0 - slot->metrics.height / 64.0) / 2.0;
slot->metrics.width = FT_Pos(IM_ROUND(metrics_width * 64.0)); // Using IM_ROUND() assume width and height are positive
slot->metrics.height = FT_Pos(IM_ROUND(metrics_height * 64.0));
slot->metrics.horiBearingX = FT_Pos(horiBearingX * 64);
slot->metrics.horiBearingY = FT_Pos(horiBearingY * 64);
slot->metrics.vertBearingX = FT_Pos(vertBearingX * 64);
slot->metrics.vertBearingY = FT_Pos(vertBearingY * 64);
if (slot->metrics.vertAdvance == 0)
slot->metrics.vertAdvance = FT_Pos(metrics_height * 1.2 * 64.0);
state->err = FT_Err_Ok;
return state->err;
}
#endif // #ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
//-----------------------------------------------------------------------------
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
#ifdef _MSC_VER
#pragma warning (pop)
#endif
#endif // #ifndef IMGUI_DISABLE

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Editor/imgui/misc/freetype/imgui_freetype.h Normal file
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// dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder)
// (headers)
#pragma once
#include "imgui.h" // IMGUI_API
#ifndef IMGUI_DISABLE
// Usage:
// - Add '#define IMGUI_ENABLE_FREETYPE' in your imconfig to enable support for imgui_freetype in imgui.
// Optional support for OpenType SVG fonts:
// - Add '#define IMGUI_ENABLE_FREETYPE_PLUTOSVG' to use plutosvg (not provided). See #7927.
// - Add '#define IMGUI_ENABLE_FREETYPE_LUNASVG' to use lunasvg (not provided). See #6591.
// Forward declarations
struct ImFontAtlas;
struct ImFontBuilderIO;
// Hinting greatly impacts visuals (and glyph sizes).
// - By default, hinting is enabled and the font's native hinter is preferred over the auto-hinter.
// - When disabled, FreeType generates blurrier glyphs, more or less matches the stb_truetype.h
// - The Default hinting mode usually looks good, but may distort glyphs in an unusual way.
// - The Light hinting mode generates fuzzier glyphs but better matches Microsoft's rasterizer.
// You can set those flags globally in ImFontAtlas::FontBuilderFlags
// You can set those flags on a per font basis in ImFontConfig::FontBuilderFlags
enum ImGuiFreeTypeBuilderFlags
{
ImGuiFreeTypeBuilderFlags_NoHinting = 1 << 0, // Disable hinting. This generally generates 'blurrier' bitmap glyphs when the glyph are rendered in any of the anti-aliased modes.
ImGuiFreeTypeBuilderFlags_NoAutoHint = 1 << 1, // Disable auto-hinter.
ImGuiFreeTypeBuilderFlags_ForceAutoHint = 1 << 2, // Indicates that the auto-hinter is preferred over the font's native hinter.
ImGuiFreeTypeBuilderFlags_LightHinting = 1 << 3, // A lighter hinting algorithm for gray-level modes. Many generated glyphs are fuzzier but better resemble their original shape. This is achieved by snapping glyphs to the pixel grid only vertically (Y-axis), as is done by Microsoft's ClearType and Adobe's proprietary font renderer. This preserves inter-glyph spacing in horizontal text.
ImGuiFreeTypeBuilderFlags_MonoHinting = 1 << 4, // Strong hinting algorithm that should only be used for monochrome output.
ImGuiFreeTypeBuilderFlags_Bold = 1 << 5, // Styling: Should we artificially embolden the font?
ImGuiFreeTypeBuilderFlags_Oblique = 1 << 6, // Styling: Should we slant the font, emulating italic style?
ImGuiFreeTypeBuilderFlags_Monochrome = 1 << 7, // Disable anti-aliasing. Combine this with MonoHinting for best results!
ImGuiFreeTypeBuilderFlags_LoadColor = 1 << 8, // Enable FreeType color-layered glyphs
ImGuiFreeTypeBuilderFlags_Bitmap = 1 << 9 // Enable FreeType bitmap glyphs
};
namespace ImGuiFreeType
{
// This is automatically assigned when using '#define IMGUI_ENABLE_FREETYPE'.
// If you need to dynamically select between multiple builders:
// - you can manually assign this builder with 'atlas->FontBuilderIO = ImGuiFreeType::GetBuilderForFreeType()'
// - prefer deep-copying this into your own ImFontBuilderIO instance if you use hot-reloading that messes up static data.
IMGUI_API const ImFontBuilderIO* GetBuilderForFreeType();
// Override allocators. By default ImGuiFreeType will use IM_ALLOC()/IM_FREE()
// However, as FreeType does lots of allocations we provide a way for the user to redirect it to a separate memory heap if desired.
IMGUI_API void SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data = nullptr);
// Obsolete names (will be removed soon)
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
//static inline bool BuildFontAtlas(ImFontAtlas* atlas, unsigned int flags = 0) { atlas->FontBuilderIO = GetBuilderForFreeType(); atlas->FontBuilderFlags = flags; return atlas->Build(); } // Prefer using '#define IMGUI_ENABLE_FREETYPE'
#endif
}
#endif // #ifndef IMGUI_DISABLE

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// dear imgui: single-file wrapper include
// We use this to validate compiling all *.cpp files in a same compilation unit.
// Users of that technique (also called "Unity builds") can generally provide this themselves,
// so we don't really recommend you use this in your projects.
// Do this:
// #define IMGUI_IMPLEMENTATION
// Before you include this file in *one* C++ file to create the implementation.
// Using this in your project will leak the contents of imgui_internal.h and ImVec2 operators in this compilation unit.
#ifdef IMGUI_IMPLEMENTATION
#define IMGUI_DEFINE_MATH_OPERATORS
#endif
#include "../../imgui.h"
#ifdef IMGUI_ENABLE_FREETYPE
#include "../../misc/freetype/imgui_freetype.h"
#endif
#ifdef IMGUI_IMPLEMENTATION
#include "../../imgui.cpp"
#include "../../imgui_demo.cpp"
#include "../../imgui_draw.cpp"
#include "../../imgui_tables.cpp"
#include "../../imgui_widgets.cpp"
#ifdef IMGUI_ENABLE_FREETYPE
#include "../../misc/freetype/imgui_freetype.cpp"
#endif
#endif

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imgui/backends/imgui_impl_sdl2.h

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imgui/backends/imgui_impl_sdlrenderer2.h

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#include <cstdio>
#include <cstdlib>
#include <SDL2/SDL.h>
#include <random>
#include <string>
#include <iostream>
#include <bits/stdc++.h>
#include "imgui.h"
#include "imgui_impl_sdl2.h"
#include "imgui_impl_sdlrenderer2.h"
#include "serialib.h"
#include "ssup.h"
#include "editor.cpp"
#include "connector.cpp"
#include "pages.cpp"
#include "menu.cpp"
#include "help.cpp"
using namespace std;
int main(int argc, char* argv[]){
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) != 0){
cerr << "Error: " << SDL_GetError() << endl;
return -1;
}
SDL_Window* window = SDL_CreateWindow("SpEdit", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 800, 600, SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
if (window == nullptr) {
cerr << "Error: SDL_CreateWindow(): " << SDL_GetError() << endl;
return -1;
}
SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_ACCELERATED);
if (renderer == nullptr){
cerr << "Error creating SDL_Renderer!" << endl;
return -1;
}
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard | ImGuiConfigFlags_NavEnableGamepad;
io.IniFilename = NULL;
io.LogFilename = NULL;
updateAppStyle();
ImGui_ImplSDL2_InitForSDLRenderer(window, renderer);
ImGui_ImplSDLRenderer2_Init(renderer);
addPage(PAGETYPE::TEXT);
bool done = false;
while (!done){
SDL_Delay(10);
SDL_Event event;
while (SDL_PollEvent(&event)){
ImGui_ImplSDL2_ProcessEvent(&event);
if (event.type == SDL_QUIT)
done = true;
if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
done = true;
}
if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED) {
SDL_Delay(10);
continue;
}
ImGui_ImplSDLRenderer2_NewFrame();
ImGui_ImplSDL2_NewFrame();
ImGui::NewFrame();
renderMenu();
ImGui::SetNextWindowPos(ImVec2(270, 30), ImGuiCond_Always);
ImGui::SetNextWindowSize(ImVec2(ImGui::GetMainViewport()->Size.x - 280, ImGui::GetMainViewport()->Size.y - 40), ImGuiCond_Always);
ImGui::Begin("###TABWIN", NULL, ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoCollapse);
ImGui::BeginTabBar("Tablol");
renderConnectModule();
renderPageEditor();
renderHelpMenu();
ImGui::EndTabBar();
ImGui::End();
renderPageAllocator(currentPage);
ImGui::Render();
SDL_RenderSetScale(renderer, io.DisplayFramebufferScale.x, io.DisplayFramebufferScale.y);
ImVec4 bgCol = ImGui::GetStyleColorVec4(ImGuiCol_FrameBg);
SDL_SetRenderDrawColor(renderer, bgCol.x * 255, bgCol.y * 255, bgCol.z * 255, bgCol.w * 255);
SDL_RenderClear(renderer);
ImGui_ImplSDLRenderer2_RenderDrawData(ImGui::GetDrawData(), renderer);
SDL_RenderPresent(renderer);
}
serial.closeDevice();
ImGui_ImplSDLRenderer2_Shutdown();
ImGui_ImplSDL2_Shutdown();
ImGui::DestroyContext();
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
return 0;
}

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#include <cstdio>
#include <SDL2/SDL.h>
#include <bits/stdc++.h>
#include "imgui.h"
#include "ssup.h"
#include "actions.cpp"
using namespace std;
void updateAppStyle(){
switch (applicationStyle){
case 0:
ImGui::StyleColorsLight();
break;
case 1:
ImGui::StyleColorsDark();
break;
default:
ImGui::StyleColorsClassic();
break;
}
}
void renderMenu(){
ImGui::SetNextWindowPos(ImVec2(0, 0), ImGuiCond_Always);
ImGui::SetNextWindowSize(ImVec2(ImGui::GetMainViewport()->Size.x, 0), ImGuiCond_Always);
ImGui::Begin("###INVISFRAME", NULL, ImGuiWindowFlags_NoBackground | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_MenuBar);
if (ImGui::BeginMenuBar()){
if (ImGui::BeginMenu(appLang == LANG::ENGLISH ? "Edit" : "Bearbeiten")){
ImGui::EndMenu();
} if (ImGui::BeginMenu(appLang == LANG::ENGLISH ? "Actions" : "Aktionen")){
renderActions(),
ImGui::EndMenu();
} if (ImGui::BeginMenu(appLang == LANG::ENGLISH ? "Settings" : "Einstellungen")){
ImGui::SeparatorText("Application Style");
if (ImGui::RadioButton(appLang == LANG::ENGLISH ? "Light" : "Hell", &applicationStyle, 0)) updateAppStyle();
if (ImGui::RadioButton(appLang == LANG::ENGLISH ? "Dark" : "Dunkel", &applicationStyle, 1)) updateAppStyle();
if (ImGui::RadioButton(appLang == LANG::ENGLISH ? "Classic" : "Klassisch", &applicationStyle, 2)) updateAppStyle();
ImGui::SeparatorText(appLang == LANG::ENGLISH ? "Language" : "Sprache");
ImGui::RadioButton(appLang == LANG::ENGLISH ? "English" : "Englisch", &appLang, LANG::ENGLISH);
ImGui::RadioButton(appLang == LANG::ENGLISH ? "Deutsch" : "German", &appLang, LANG::GERMAN);
ImGui::EndMenu();
} if (ImGui::BeginMenu("About")){
if (ImGui::Button(appLang == LANG::ENGLISH ? "Why does this exist?" : "Warum existiert sowas?")) ImGui::OpenPopup("Fuck School");
ImVec2 center = ImGui::GetMainViewport()->GetCenter();
ImGui::SetNextWindowPos(center, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
if (ImGui::BeginPopupModal("Fuck School", NULL, ImGuiWindowFlags_AlwaysAutoResize)) {
ImGui::Text(appLang == LANG::ENGLISH ?
"Because: Fuck school\nBecause: Fuck math\nBecause: Free time is more valuable than fucking school" :
"Weil: Fick Schule\nWeil: Fick Mathe\nWeil: Freizeit viel mehr Wert ist als scheiß Schule");
ImGui::Separator();
ImGui::SetItemDefaultFocus();
if (ImGui::Button("OK", ImVec2(120, 0))) ImGui::CloseCurrentPopup();
ImGui::EndPopup();
}
if (ImGui::Button(appLang == LANG::ENGLISH ? "License information" : "Lizenz Information")) ImGui::OpenPopup("Licence Info");
ImGui::SetNextWindowPos(center, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
if (ImGui::BeginPopupModal("Licence Info", NULL, ImGuiWindowFlags_AlwaysAutoResize)) {
ImGui::Text(appLang == LANG::ENGLISH ?
"This shit is licenced under the GNU-GPL3 licence.\nThis means you can edit and modify this shit how ever you like.\nThe sourcecode and all info regarding the project can be found" :
"Diese Scheiße ist unter der GNU-GPL3 Lizenz lizenziert.\nDas heißt du kannst änderungen und modifikationen vorhehmen, wie du möchtest.\nDer Source-Code und jegliche Info über das Projekt kann");
ImGui::TextLinkOpenURL(appLang == LANG::ENGLISH ? "here at my Git instance" : "hier auf meiner Git Instanz", "https://git.weingardt.dev");
ImGui::Text(appLang == LANG::ENGLISH ? "or" : "oder");
ImGui::TextLinkOpenURL(appLang == LANG::ENGLISH ? "here on my website" : "hier auf meiner Webseite gefunden werden", "https://weingardt.dev/ssup");
ImGui::Separator();
ImGui::SetItemDefaultFocus();
if (ImGui::Button("OK", ImVec2(120, 0))) ImGui::CloseCurrentPopup();
ImGui::EndPopup();
}
ImGui::EndMenu();
}
ImGui::EndMenuBar();
}
ImGui::End();
}

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#include <SDL2/SDL.h>
#include <algorithm>
#include <cstdio>
#include <cstdlib>
#include <bits/stdc++.h>
#include "imgui.h"
#include "ssup.h"
using namespace std;
void addPage(PAGETYPE type){
page* pg = new page();
pg->type = type;
if (type == PAGETYPE::IMAGE){
pg->data = malloc((((config.imagex / 8) * config.imagey)*sizeof(uint8_t)));
} else {
pg->data = malloc(config.texty*sizeof(char*));
char** txt = (char**)pg->data;
for (int i = 0; i < config.texty; i++) {
txt[i] = (char*)malloc((config.textx + 1)*sizeof(char));
for (int j = 0; j < config.textx + 1; j++) txt[i][j] = 0;
}
}
pages.push_back(pg);
}
bool pageGetter(void* data, int index, const char** output) {
vector<page*>* pages = (vector<page*>*)data;
static char buff[16];
if (pages->at(index)->type == PAGETYPE::IMAGE) sprintf(buff, appLang == LANG::ENGLISH ? "%d : Image" : "%d : Bild", index);
else sprintf(buff, "%d : Text", index);
*output = buff;
return true;
}
void renderPageAllocator(int &currentPage){
static int usedMemory = 0;
ImGui::SetNextWindowSize(ImVec2(250, ImGui::GetMainViewport()->Size.y - 40));
ImGui::SetNextWindowPos(ImVec2(10, 30), ImGuiCond_Always);
ImGui::Begin(appLang == LANG::ENGLISH ? "Pages" : "Seiten", NULL, ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoCollapse);
ImGui::BeginDisabled(usedMemory < (config.textx * config.texty));
if (ImGui::Button(appLang == LANG::ENGLISH ? "Add Text" : "Text hinzufügen", ImVec2(130, 0))) addPage(PAGETYPE::TEXT);
ImGui::SameLine();
ImGui::Text("%d Bytes", (config.textx * config.texty));
ImGui::EndDisabled();
ImGui::BeginDisabled(usedMemory < ((config.imagex / 8) * config.imagey));
if (ImGui::Button(appLang == LANG::ENGLISH ? "Add Image" : "Bild hinzufügen", ImVec2(130, 0))) addPage(PAGETYPE::IMAGE);
ImGui::SameLine();
ImGui::Text("%d Bytes", ((config.imagex / 8) * config.imagey));
ImGui::EndDisabled();
ImGui::Separator();
ImGui::SetNextItemWidth(ImGui::GetWindowWidth() - 20);
ImGui::ListBox("###Pages", &currentPage, pageGetter, &pages, pages.size(), 16);
ImGui::BeginDisabled(currentPage == 0);
if (ImGui::ArrowButton("###PUSHUP", ImGuiDir_Up)){
page* swap = pages[currentPage];
pages[currentPage] = pages[currentPage - 1];
pages[currentPage - 1] = swap;
currentPage--;
}
ImGui::EndDisabled();
ImGui::BeginDisabled(currentPage >= (int)pages.size() - 1);
ImGui::SameLine();
if (ImGui::ArrowButton("###PUSHDOWN", ImGuiDir_Down)){
page* swap = pages[currentPage];
pages[currentPage] = pages[currentPage + 1];
pages[currentPage + 1] = swap;
currentPage++;
}
ImGui::EndDisabled();
ImGui::SameLine();
ImGui::Text(appLang == LANG::ENGLISH ? "Arrange Pages" : "Seiten Sortieren");
ImGui::BeginDisabled(pages.size() <= 0);
if (ImGui::Button(appLang == LANG::ENGLISH ? "Delete Page" : "Seite löschen")){
vector<page*>::iterator it = pages.begin();
advance(it, currentPage);
pages.erase(it);
}
ImGui::EndDisabled();
if (connected){
ImGui::Separator();
usedMemory = 0;
for (uint i = 0; i < pages.size(); i++) usedMemory += ( pages[i]->type == PAGETYPE::IMAGE ? ((config.imagex / 8) * config.imagey) : ((config.textx * config.texty)));
usedMemory = (config.eeprom_size * 1024) - usedMemory - config.toc_size;
ImGui::Text(appLang == LANG::ENGLISH ? "%d Bytes left\n%d%% Used" : "%d Bytes verbleibend\n%d%% genutzt",
usedMemory, (int)(((float)((config.eeprom_size * 1024) - usedMemory) / (float)(config.eeprom_size * 1024)) * 100));
}
ImGui::End();
}

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/*!
\file serialib.h
\brief Header file of the class serialib. This class is used for communication over a serial device.
\author Philippe Lucidarme (University of Angers)
\version 2.0
\date december the 27th of 2019
This Serial library is used to communicate through serial port.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
This is a licence-free software, it can be used by anyone who try to build a better world.
*/
#ifndef SERIALIB_H
#define SERIALIB_H
#if defined(__CYGWIN__)
// This is Cygwin special case
#include <sys/time.h>
#endif
// Include for windows
#if defined (_WIN32) || defined (_WIN64)
#if defined(__GNUC__)
// This is MinGW special case
#include <sys/time.h>
#else
// sys/time.h does not exist on "actual" Windows
#define NO_POSIX_TIME
#endif
// Accessing to the serial port under Windows
#include <windows.h>
#endif
// Include for Linux
#if defined (__linux__) || defined(__APPLE__)
#include <stdlib.h>
#include <sys/types.h>
#include <sys/shm.h>
#include <termios.h>
#include <string.h>
#include <iostream>
#include <sys/time.h>
// File control definitions
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#endif
/*! To avoid unused parameters */
#define UNUSED(x) (void)(x)
/**
* number of serial data bits
*/
enum SerialDataBits {
SERIAL_DATABITS_5, /**< 5 databits */
SERIAL_DATABITS_6, /**< 6 databits */
SERIAL_DATABITS_7, /**< 7 databits */
SERIAL_DATABITS_8, /**< 8 databits */
SERIAL_DATABITS_16, /**< 16 databits */
};
/**
* number of serial stop bits
*/
enum SerialStopBits {
SERIAL_STOPBITS_1, /**< 1 stop bit */
SERIAL_STOPBITS_1_5, /**< 1.5 stop bits */
SERIAL_STOPBITS_2, /**< 2 stop bits */
};
/**
* type of serial parity bits
*/
enum SerialParity {
SERIAL_PARITY_NONE, /**< no parity bit */
SERIAL_PARITY_EVEN, /**< even parity bit */
SERIAL_PARITY_ODD, /**< odd parity bit */
SERIAL_PARITY_MARK, /**< mark parity */
SERIAL_PARITY_SPACE /**< space bit */
};
/*! \class serialib
\brief This class is used for communication over a serial device.
*/
class serialib
{
public:
//_____________________________________
// ::: Constructors and destructors :::
// Constructor of the class
serialib ();
// Destructor
~serialib ();
//_________________________________________
// ::: Configuration and initialization :::
// Open a device
char openDevice(const char *Device, const unsigned int Bauds,
SerialDataBits Databits = SERIAL_DATABITS_8,
SerialParity Parity = SERIAL_PARITY_NONE,
SerialStopBits Stopbits = SERIAL_STOPBITS_1);
// Check device opening state
bool isDeviceOpen();
// Close the current device
void closeDevice();
//___________________________________________
// ::: Read/Write operation on characters :::
// Write a char
int writeChar (char);
// Read a char (with timeout)
int readChar (char *pByte,const unsigned int timeOut_ms=0);
//________________________________________
// ::: Read/Write operation on strings :::
// Write a string
int writeString (const char *String);
// Read a string (with timeout)
int readString ( char *receivedString,
char finalChar,
unsigned int maxNbBytes,
const unsigned int timeOut_ms=0);
// _____________________________________
// ::: Read/Write operation on bytes :::
// Write an array of bytes
int writeBytes (const void *Buffer, const unsigned int NbBytes);
// Read an array of byte (with timeout)
int readBytes (void *buffer,unsigned int maxNbBytes,const unsigned int timeOut_ms=0, unsigned int sleepDuration_us=100);
// _________________________
// ::: Special operation :::
// Empty the received buffer
char flushReceiver();
// Return the number of bytes in the received buffer
int available();
// _________________________
// ::: Access to IO bits :::
// Set CTR status (Data Terminal Ready, pin 4)
bool DTR(bool status);
bool setDTR();
bool clearDTR();
// Set RTS status (Request To Send, pin 7)
bool RTS(bool status);
bool setRTS();
bool clearRTS();
// Get RI status (Ring Indicator, pin 9)
bool isRI();
// Get DCD status (Data Carrier Detect, pin 1)
bool isDCD();
// Get CTS status (Clear To Send, pin 8)
bool isCTS();
// Get DSR status (Data Set Ready, pin 9)
bool isDSR();
// Get RTS status (Request To Send, pin 7)
bool isRTS();
// Get CTR status (Data Terminal Ready, pin 4)
bool isDTR();
private:
// Read a string (no timeout)
int readStringNoTimeOut (char *String,char FinalChar,unsigned int MaxNbBytes);
// Current DTR and RTS state (can't be read on WIndows)
bool currentStateRTS;
bool currentStateDTR;
#if defined (_WIN32) || defined( _WIN64)
// Handle on serial device
HANDLE hSerial;
// For setting serial port timeouts
COMMTIMEOUTS timeouts;
#endif
#if defined (__linux__) || defined(__APPLE__)
int fd;
#endif
};
/*! \class timeOut
\brief This class can manage a timer which is used as a timeout.
*/
// Class timeOut
class timeOut
{
public:
// Constructor
timeOut();
// Init the timer
void initTimer();
// Return the elapsed time since initialization
unsigned long int elapsedTime_ms();
private:
#if defined (NO_POSIX_TIME)
// Used to store the previous time (for computing timeout)
LONGLONG counterFrequency;
LONGLONG previousTime;
#else
// Used to store the previous time (for computing timeout)
struct timeval previousTime;
#endif
};
#endif // serialib_H

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#pragma once
#include <string>
#include <bits/stdc++.h>
#include "serialib.h"
using namespace std;
enum LANG{
ENGLISH = 0,
GERMAN = 1
};
enum PAGETYPE{
TEXT = 0,
IMAGE = 1
};
struct ssup_config {
int firmware;
int model;
int eeprom_size = 8;
int eeprom_address;
int screen_address;
int toc_size;
int threshhold;
int contrast;
bool locked;
int textx = 21;
int texty = 4;
int imagex = 128;
int imagey = 32;
};
struct page {
PAGETYPE type;
void* data;
};
const string modelLookup[] = {
"SHARP EL-W531XG"
};
static serialib serial;
static ssup_config config;
static int appLang = LANG::GERMAN;
static int applicationStyle = 1;
static int currentPage = 0;
static bool connected = false;
static vector<page*> pages;