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bindings/go/: - imgui_bridge.h/.cpp: Thin C API bridge (extern C) wrapping C++ ImGui - imgui.go: Go cgo package (CreateContext, NewFrame, Begin, Button, SliderFloat, SliderInt, Checkbox, ColorEdit3, Text, Combo, etc.) - go.mod: Module definition - README.md: Full docs with usage, building, and API reference examples/example_golang/: - main.go: Null-mode example showing ImGui from Go - go.mod: Module with replace directive for local bindings - Makefile: Build/run/clean targets Go 1.26.5 verified working on this host. CGO_ENABLED=1 required (plus a C++ compiler like g++ for the bridge compilation).
103 lines
4.2 KiB
C++
103 lines
4.2 KiB
C++
// imgui_bridge.cpp — Thin C API bridge implementation for Dear ImGui
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// Copyright (c) 2024 OwlLogics / imgui_xl
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// Licensed under MIT
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#include "imgui.h"
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#include "imgui_bridge.h"
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// Compile the full ImGui implementation here
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#define IMGUI_IMPLEMENTATION
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#include "imgui.cpp"
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#include "imgui_demo.cpp"
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#include "imgui_draw.cpp"
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#include "imgui_tables.cpp"
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#include "imgui_widgets.cpp"
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// === Core ===
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extern "C" void ig_CreateContext(void) { ImGui::CreateContext(); }
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extern "C" void ig_DestroyContext(void) { ImGui::DestroyContext(); }
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extern "C" void* ig_GetIO(void) { return (void*)&ImGui::GetIO(); }
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extern "C" void* ig_GetStyle(void) { return (void*)&ImGui::GetStyle(); }
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extern "C" void ig_NewFrame(void) { ImGui::NewFrame(); }
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extern "C" void ig_Render(void) { ImGui::Render(); }
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extern "C" void* ig_GetDrawData(void) { return (void*)ImGui::GetDrawData(); }
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extern "C" const char* ig_GetVersion(void) { return ImGui::GetVersion(); }
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// === Style ===
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extern "C" void ig_StyleColorsDark(void) { ImGui::StyleColorsDark(); }
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extern "C" void ig_StyleColorsLight(void) { ImGui::StyleColorsLight(); }
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extern "C" void ig_StyleColorsClassic(void) { ImGui::StyleColorsClassic(); }
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// === Windows ===
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extern "C" int ig_Begin(const char* name, int* p_open) {
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return ImGui::Begin(name, p_open ? (bool*)p_open : nullptr) ? 1 : 0;
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}
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extern "C" void ig_End(void) { ImGui::End(); }
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extern "C" int ig_BeginChild(const char* str_id, float w, float h, int border) {
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return ImGui::BeginChild(str_id, ImVec2(w, h), border != 0) ? 1 : 0;
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}
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extern "C" void ig_EndChild(void) { ImGui::EndChild(); }
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// === Widgets ===
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extern "C" void ig_Text(const char* fmt) { ImGui::Text("%s", fmt); }
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extern "C" void ig_TextColored(float r, float g, float b, float a, const char* fmt) {
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ImGui::TextColored(ImVec4(r, g, b, a), "%s", fmt);
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}
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extern "C" void ig_BulletText(const char* fmt) { ImGui::BulletText("%s", fmt); }
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extern "C" int ig_Button(const char* label, float w, float h) {
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return ImGui::Button(label, ImVec2(w, h)) ? 1 : 0;
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}
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extern "C" int ig_InvisibleButton(const char* str_id, float w, float h) {
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return ImGui::InvisibleButton(str_id, ImVec2(w, h)) ? 1 : 0;
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}
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extern "C" int ig_Checkbox(const char* label, int* v) {
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bool b = *v != 0;
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int ret = ImGui::Checkbox(label, &b) ? 1 : 0;
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*v = b ? 1 : 0;
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return ret;
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}
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extern "C" int ig_SliderFloat(const char* label, float* v, float v_min, float v_max) {
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return ImGui::SliderFloat(label, v, v_min, v_max) ? 1 : 0;
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}
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extern "C" int ig_SliderInt(const char* label, int* v, int v_min, int v_max) {
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return ImGui::SliderInt(label, v, v_min, v_max) ? 1 : 0;
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}
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extern "C" int ig_ColorEdit3(const char* label, float* col) {
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return ImGui::ColorEdit3(label, col) ? 1 : 0;
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}
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extern "C" int ig_ColorEdit4(const char* label, float* col, int flags) {
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return ImGui::ColorEdit4(label, col, flags) ? 1 : 0;
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}
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extern "C" int ig_InputText(const char* label, char* buf, int buf_size) {
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return ImGui::InputText(label, buf, (size_t)buf_size) ? 1 : 0;
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}
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extern "C" int ig_Combo(const char* label, int* current_item, const char* items_separated_by_zeros, int items_count) {
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return ImGui::Combo(label, current_item, items_separated_by_zeros, items_count) ? 1 : 0;
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}
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// === Layout ===
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extern "C" void ig_SameLine(float offset, float spacing) { ImGui::SameLine(offset, spacing); }
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extern "C" void ig_Separator(void) { ImGui::Separator(); }
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extern "C" void ig_Spacing(void) { ImGui::Spacing(); }
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extern "C" void ig_NewLine(void) { ImGui::NewLine(); }
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extern "C" void ig_PushItemWidth(float w) { ImGui::PushItemWidth(w); }
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extern "C" void ig_PopItemWidth(void) { ImGui::PopItemWidth(); }
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// === Drawing ===
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extern "C" void ig_ShowDemoWindow(int* p_open) { ImGui::ShowDemoWindow(p_open ? (bool*)p_open : nullptr); }
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// === Metrics / Info ===
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extern "C" float ig_GetFramerate(void) { return ImGui::GetIO().Framerate; }
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extern "C" float ig_GetTime(void) { return (float)ImGui::GetTime(); }
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extern "C" int ig_GetFrameCount(void) { return ImGui::GetFrameCount(); }
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// === Display ===
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extern "C" void ig_GetDisplaySize(float* w, float* h) {
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ImVec2 size = ImGui::GetIO().DisplaySize;
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*w = size.x; *h = size.y;
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}
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extern "C" void ig_GetDisplayFramebufferScale(float* x, float* y) {
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ImVec2 scale = ImGui::GetIO().DisplayFramebufferScale;
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*x = scale.x; *y = scale.y;
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}
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