diff --git a/CHANGELOG.md b/CHANGELOG.md new file mode 100644 --- /dev/null +++ b/CHANGELOG.md @@ -0,0 +1,13 @@ +# Changelog for `dear-imgui-impl-glut` + +All notable changes to this package will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), +and this project adheres to the +[Haskell Package Versioning Policy](https://pvp.haskell.org/). + +## 1.0.0 - 2026-10-21 + +Initial release. + +- Generated with dear_bindings `v0.26` from Dear ImGui `v1.93.0-docking`. diff --git a/LICENSE b/LICENSE new file mode 100644 --- /dev/null +++ b/LICENSE @@ -0,0 +1,26 @@ +Copyright 2026 IC Rainbow + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +1. Redistributions of source code must retain the above copyright notice, this + list of conditions and the following disclaimer. + +2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + +3. Neither the name of the copyright holder nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR +ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/README.md b/README.md new file mode 100644 --- /dev/null +++ b/README.md @@ -0,0 +1,6 @@ +# dear-imgui-impl-glut + +Platform backend for [Dear ImGui] on GLUT and FreeGLUT windows. +Pair it with a renderer backend. + +[Dear ImGui]: https://github.com/ocornut/imgui diff --git a/cbits/DearImGuiWrappers.cpp b/cbits/DearImGuiWrappers.cpp new file mode 100644 --- /dev/null +++ b/cbits/DearImGuiWrappers.cpp @@ -0,0 +1,3 @@ +// Generated by dear-bindings-ffi. Do not edit. +#include "DearImGuiWrappers.h" + diff --git a/cbits/DearImGuiWrappers.h b/cbits/DearImGuiWrappers.h new file mode 100644 --- /dev/null +++ b/cbits/DearImGuiWrappers.h @@ -0,0 +1,16 @@ +// Generated by dear-bindings-ffi. Do not edit. +#ifndef DEAR_IMGUI_WRAPPERS_H +#define DEAR_IMGUI_WRAPPERS_H + +#include "dcimgui_impl_glut.h" + +#ifdef __cplusplus +extern "C" { +#endif + + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/cbits/dcimgui_impl_glut.cpp b/cbits/dcimgui_impl_glut.cpp new file mode 100644 --- /dev/null +++ b/cbits/dcimgui_impl_glut.cpp @@ -0,0 +1,158 @@ +// THIS FILE HAS BEEN AUTO-GENERATED BY THE 'DEAR BINDINGS' GENERATOR. +// **DO NOT EDIT DIRECTLY** +// https://github.com/dearimgui/dear_bindings + +#include "imgui.h" +#include "imgui_impl_glut.h" + +#include + +// Wrap this in a namespace to keep it separate from the C++ API +// This define prevents #defines in the header getting defined again (as they are already in the normal header above), +// and thus generating redefinition warnings +#define DEAR_BINDINGS_INTERNAL_GLUE_CODE +namespace cimgui +{ +#include "dcimgui_impl_glut.h" +} +#undef DEAR_BINDINGS_INTERNAL_GLUE_CODE + +// By-value struct conversions + +static inline cimgui::ImVec2 ConvertFromCPP_ImVec2(const ::ImVec2& src) +{ + cimgui::ImVec2 dest; + dest.x = src.x; + dest.y = src.y; + return dest; +} + +static inline ::ImVec2 ConvertToCPP_ImVec2(const cimgui::ImVec2& src) +{ + ::ImVec2 dest; + dest.x = src.x; + dest.y = src.y; + return dest; +} + +static inline cimgui::ImVec4 ConvertFromCPP_ImVec4(const ::ImVec4& src) +{ + cimgui::ImVec4 dest; + dest.x = src.x; + dest.y = src.y; + dest.z = src.z; + dest.w = src.w; + return dest; +} + +static inline ::ImVec4 ConvertToCPP_ImVec4(const cimgui::ImVec4& src) +{ + ::ImVec4 dest; + dest.x = src.x; + dest.y = src.y; + dest.z = src.z; + dest.w = src.w; + return dest; +} + +static inline cimgui::ImTextureRef ConvertFromCPP_ImTextureRef(const ::ImTextureRef& src) +{ + cimgui::ImTextureRef dest; + dest._TexData = reinterpret_cast(src._TexData); + dest._TexID = src._TexID; + return dest; +} + +static inline ::ImTextureRef ConvertToCPP_ImTextureRef(const cimgui::ImTextureRef& src) +{ + ::ImTextureRef dest; + dest._TexData = reinterpret_cast<::ImTextureData*>(src._TexData); + dest._TexID = src._TexID; + return dest; +} + +static inline cimgui::ImColor ConvertFromCPP_ImColor(const ::ImColor& src) +{ + cimgui::ImColor dest; + dest.Value.x = src.Value.x; + dest.Value.y = src.Value.y; + dest.Value.z = src.Value.z; + dest.Value.w = src.Value.w; + return dest; +} + +static inline ::ImColor ConvertToCPP_ImColor(const cimgui::ImColor& src) +{ + ::ImColor dest; + dest.Value.x = src.Value.x; + dest.Value.y = src.Value.y; + dest.Value.z = src.Value.z; + dest.Value.w = src.Value.w; + return dest; +} + +// Function stubs + +#ifndef IMGUI_DISABLE + +CIMGUI_IMPL_API bool cimgui::cImGui_ImplGLUT_Init(void) +{ + return ::ImGui_ImplGLUT_Init(); +} + +CIMGUI_IMPL_API void cimgui::cImGui_ImplGLUT_InstallFuncs(void) +{ + ::ImGui_ImplGLUT_InstallFuncs(); +} + +CIMGUI_IMPL_API void cimgui::cImGui_ImplGLUT_Shutdown(void) +{ + ::ImGui_ImplGLUT_Shutdown(); +} + +CIMGUI_IMPL_API void cimgui::cImGui_ImplGLUT_NewFrame(void) +{ + ::ImGui_ImplGLUT_NewFrame(); +} + +CIMGUI_IMPL_API void cimgui::cImGui_ImplGLUT_ReshapeFunc(int w, int h) +{ + ::ImGui_ImplGLUT_ReshapeFunc(w, h); +} + +CIMGUI_IMPL_API void cimgui::cImGui_ImplGLUT_MotionFunc(int x, int y) +{ + ::ImGui_ImplGLUT_MotionFunc(x, y); +} + +CIMGUI_IMPL_API void cimgui::cImGui_ImplGLUT_MouseFunc(int button, int state, int x, int y) +{ + ::ImGui_ImplGLUT_MouseFunc(button, state, x, y); +} + +CIMGUI_IMPL_API void cimgui::cImGui_ImplGLUT_MouseWheelFunc(int button, int dir, int x, int y) +{ + ::ImGui_ImplGLUT_MouseWheelFunc(button, dir, x, y); +} + +CIMGUI_IMPL_API void cimgui::cImGui_ImplGLUT_KeyboardFunc(unsigned char c, int x, int y) +{ + ::ImGui_ImplGLUT_KeyboardFunc(c, x, y); +} + +CIMGUI_IMPL_API void cimgui::cImGui_ImplGLUT_KeyboardUpFunc(unsigned char c, int x, int y) +{ + ::ImGui_ImplGLUT_KeyboardUpFunc(c, x, y); +} + +CIMGUI_IMPL_API void cimgui::cImGui_ImplGLUT_SpecialFunc(int key, int x, int y) +{ + ::ImGui_ImplGLUT_SpecialFunc(key, x, y); +} + +CIMGUI_IMPL_API void cimgui::cImGui_ImplGLUT_SpecialUpFunc(int key, int x, int y) +{ + ::ImGui_ImplGLUT_SpecialUpFunc(key, x, y); +} + +#endif // #ifndef IMGUI_DISABLE diff --git a/cbits/dcimgui_impl_glut.h b/cbits/dcimgui_impl_glut.h new file mode 100644 --- /dev/null +++ b/cbits/dcimgui_impl_glut.h @@ -0,0 +1,75 @@ +// THIS FILE HAS BEEN AUTO-GENERATED BY THE 'DEAR BINDINGS' GENERATOR. +// **DO NOT EDIT DIRECTLY** +// https://github.com/dearimgui/dear_bindings + +// Dear Bindings version as a string +#ifndef DEAR_BINDINGS_VERSION +#define DEAR_BINDINGS_VERSION "0.26" +#endif + +// Dear Bindings version as an integer +#ifndef DEAR_BINDINGS_VERSION_NUMBER +#define DEAR_BINDINGS_VERSION_NUMBER 26 +#endif + +// dear imgui: Platform Backend for GLUT/FreeGLUT +// ImDrawIdx: vertex index. [Compile-time configurable type] +// - To use 16-bit indices + allow large meshes: backend need to set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' and handle ImDrawCmd::VtxOffset (recommended). +// - To use 32-bit indices: override with '#define ImDrawIdx unsigned int' in your imconfig.h file. +#ifndef ImDrawIdx +typedef unsigned short ImDrawIdx; // Default: 16-bit (for maximum compatibility with renderer backends) +#endif // #ifndef ImDrawIdx +// This needs to be used along with a Renderer (e.g. OpenGL2) + +// !!! GLUT/FreeGLUT IS OBSOLETE PREHISTORIC SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!! +// !!! If someone or something is teaching you GLUT today, you are being abused. Please show some resistance. !!! +// !!! Nowadays, prefer using GLFW or SDL instead! + +// Implemented features: +// [X] Platform: Partial 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 GLUT values are obsolete since 1.87 and not supported since 1.91.5] +// Missing features or Issues: +// [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I +// [ ] Platform: Missing horizontal mouse wheel support. +// [ ] Platform: Missing mouse cursor shape/visibility support. +// [ ] Platform: Missing clipboard support (not supported by Glut). +// [ ] Platform: Missing gamepad support. +// [ ] Platform: Missing multi-viewport support (multiple windows). + +// 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 + +#ifdef __cplusplus +extern "C" +{ +#endif +#ifndef IMGUI_DISABLE +#include "dcimgui.h" +typedef struct ImDrawData_t ImDrawData; +// Follow "Getting Started" link and check examples/ folder to learn about using backends! +CIMGUI_IMPL_API bool cImGui_ImplGLUT_Init(void); +CIMGUI_IMPL_API void cImGui_ImplGLUT_InstallFuncs(void); +CIMGUI_IMPL_API void cImGui_ImplGLUT_Shutdown(void); +CIMGUI_IMPL_API void cImGui_ImplGLUT_NewFrame(void); + +// You can call ImGui_ImplGLUT_InstallFuncs() to get all those functions installed automatically, +// or call them yourself from your own GLUT handlers. We are using the same weird names as GLUT for consistency.. +//------------------------------------ GLUT name ---------------------------------------------- Decent Name --------- +CIMGUI_IMPL_API void cImGui_ImplGLUT_ReshapeFunc(int w, int h); // ~ ResizeFunc +CIMGUI_IMPL_API void cImGui_ImplGLUT_MotionFunc(int x, int y); // ~ MouseMoveFunc +CIMGUI_IMPL_API void cImGui_ImplGLUT_MouseFunc(int button, int state, int x, int y); // ~ MouseButtonFunc +CIMGUI_IMPL_API void cImGui_ImplGLUT_MouseWheelFunc(int button, int dir, int x, int y); // ~ MouseWheelFunc +CIMGUI_IMPL_API void cImGui_ImplGLUT_KeyboardFunc(unsigned char c, int x, int y); // ~ CharPressedFunc +CIMGUI_IMPL_API void cImGui_ImplGLUT_KeyboardUpFunc(unsigned char c, int x, int y); // ~ CharReleasedFunc +CIMGUI_IMPL_API void cImGui_ImplGLUT_SpecialFunc(int key, int x, int y); // ~ KeyPressedFunc +CIMGUI_IMPL_API void cImGui_ImplGLUT_SpecialUpFunc(int key, int x, int y); // ~ KeyReleasedFunc +#endif// #ifndef IMGUI_DISABLE +#ifdef __cplusplus +} // End of extern "C" block +#endif diff --git a/cbits/imgui_impl_glut.cpp b/cbits/imgui_impl_glut.cpp new file mode 100644 --- /dev/null +++ b/cbits/imgui_impl_glut.cpp @@ -0,0 +1,310 @@ +// dear imgui: Platform Backend for GLUT/FreeGLUT +// This needs to be used along with a Renderer (e.g. OpenGL2) + +// !!! GLUT/FreeGLUT IS OBSOLETE PREHISTORIC SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!! +// !!! If someone or something is teaching you GLUT today, you are being abused. Please show some resistance. !!! +// !!! Nowadays, prefer using GLFW or SDL instead! + +// Implemented features: +// [X] Platform: Partial 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 GLUT values are obsolete since 1.87 and not supported since 1.91.5] +// Missing features or Issues: +// [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I +// [ ] Platform: Missing horizontal mouse wheel support. +// [ ] Platform: Missing mouse cursor shape/visibility support. +// [ ] Platform: Missing clipboard support (not supported by Glut). +// [ ] Platform: Missing gamepad support. +// [ ] Platform: Missing multi-viewport support (multiple windows). + +// 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) +// 2023-04-17: BREAKING: Removed call to ImGui::NewFrame() from ImGui_ImplGLUT_NewFrame(). Needs to be called from the main application loop, like with every other backends. +// 2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported). +// 2022-01-26: Inputs: replaced short-lived io.AddKeyModsEvent() (added two weeks ago) with io.AddKeyEvent() using ImGuiKey_ModXXX flags. Sorry for the confusion. +// 2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+). +// 2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range. +// 2019-04-03: Misc: Renamed imgui_impl_freeglut.cpp/.h to imgui_impl_glut.cpp/.h. +// 2019-03-25: Misc: Made io.DeltaTime always above zero. +// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window. +// 2018-03-22: Added GLUT Platform binding. + +#include "imgui.h" +#ifndef IMGUI_DISABLE +#include "imgui_impl_glut.h" +#define GL_SILENCE_DEPRECATION +#ifdef __APPLE__ +#include +#else +#include +#endif + +#ifdef _MSC_VER +#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff) +#endif + +static int g_Time = 0; // Current time, in milliseconds + +// Glut has one function for characters and one for "special keys". We map the characters in the 0..255 range and the keys above. +static ImGuiKey ImGui_ImplGLUT_KeyToImGuiKey(int key) +{ + switch (key) + { + case '\t': return ImGuiKey_Tab; + case 256 + GLUT_KEY_LEFT: return ImGuiKey_LeftArrow; + case 256 + GLUT_KEY_RIGHT: return ImGuiKey_RightArrow; + case 256 + GLUT_KEY_UP: return ImGuiKey_UpArrow; + case 256 + GLUT_KEY_DOWN: return ImGuiKey_DownArrow; + case 256 + GLUT_KEY_PAGE_UP: return ImGuiKey_PageUp; + case 256 + GLUT_KEY_PAGE_DOWN: return ImGuiKey_PageDown; + case 256 + GLUT_KEY_HOME: return ImGuiKey_Home; + case 256 + GLUT_KEY_END: return ImGuiKey_End; + case 256 + GLUT_KEY_INSERT: return ImGuiKey_Insert; + case 127: return ImGuiKey_Delete; + case 8: return ImGuiKey_Backspace; + case ' ': return ImGuiKey_Space; + case 13: return ImGuiKey_Enter; + case 27: return ImGuiKey_Escape; + case 39: return ImGuiKey_Apostrophe; + case 44: return ImGuiKey_Comma; + case 45: return ImGuiKey_Minus; + case 46: return ImGuiKey_Period; + case 47: return ImGuiKey_Slash; + case 59: return ImGuiKey_Semicolon; + case 61: return ImGuiKey_Equal; + case 91: return ImGuiKey_LeftBracket; + case 92: return ImGuiKey_Backslash; + case 93: return ImGuiKey_RightBracket; + case 96: return ImGuiKey_GraveAccent; + //case 0: return ImGuiKey_CapsLock; + //case 0: return ImGuiKey_ScrollLock; + case 256 + 0x006D: return ImGuiKey_NumLock; + //case 0: return ImGuiKey_PrintScreen; + //case 0: return ImGuiKey_Pause; + //case '0': return ImGuiKey_Keypad0; + //case '1': return ImGuiKey_Keypad1; + //case '2': return ImGuiKey_Keypad2; + //case '3': return ImGuiKey_Keypad3; + //case '4': return ImGuiKey_Keypad4; + //case '5': return ImGuiKey_Keypad5; + //case '6': return ImGuiKey_Keypad6; + //case '7': return ImGuiKey_Keypad7; + //case '8': return ImGuiKey_Keypad8; + //case '9': return ImGuiKey_Keypad9; + //case 46: return ImGuiKey_KeypadDecimal; + //case 47: return ImGuiKey_KeypadDivide; + case 42: return ImGuiKey_KeypadMultiply; + //case 45: return ImGuiKey_KeypadSubtract; + case 43: return ImGuiKey_KeypadAdd; + //case 13: return ImGuiKey_KeypadEnter; + //case 0: return ImGuiKey_KeypadEqual; + case 256 + 0x0072: return ImGuiKey_LeftCtrl; + case 256 + 0x0070: return ImGuiKey_LeftShift; + case 256 + 0x0074: return ImGuiKey_LeftAlt; + //case 0: return ImGuiKey_LeftSuper; + case 256 + 0x0073: return ImGuiKey_RightCtrl; + case 256 + 0x0071: return ImGuiKey_RightShift; + case 256 + 0x0075: return ImGuiKey_RightAlt; + //case 0: return ImGuiKey_RightSuper; + //case 0: return ImGuiKey_Menu; + case '0': return ImGuiKey_0; + case '1': return ImGuiKey_1; + case '2': return ImGuiKey_2; + case '3': return ImGuiKey_3; + case '4': return ImGuiKey_4; + case '5': return ImGuiKey_5; + case '6': return ImGuiKey_6; + case '7': return ImGuiKey_7; + case '8': return ImGuiKey_8; + case '9': return ImGuiKey_9; + case 'A': case 'a': return ImGuiKey_A; + case 'B': case 'b': return ImGuiKey_B; + case 'C': case 'c': return ImGuiKey_C; + case 'D': case 'd': return ImGuiKey_D; + case 'E': case 'e': return ImGuiKey_E; + case 'F': case 'f': return ImGuiKey_F; + case 'G': case 'g': return ImGuiKey_G; + case 'H': case 'h': return ImGuiKey_H; + case 'I': case 'i': return ImGuiKey_I; + case 'J': case 'j': return ImGuiKey_J; + case 'K': case 'k': return ImGuiKey_K; + case 'L': case 'l': return ImGuiKey_L; + case 'M': case 'm': return ImGuiKey_M; + case 'N': case 'n': return ImGuiKey_N; + case 'O': case 'o': return ImGuiKey_O; + case 'P': case 'p': return ImGuiKey_P; + case 'Q': case 'q': return ImGuiKey_Q; + case 'R': case 'r': return ImGuiKey_R; + case 'S': case 's': return ImGuiKey_S; + case 'T': case 't': return ImGuiKey_T; + case 'U': case 'u': return ImGuiKey_U; + case 'V': case 'v': return ImGuiKey_V; + case 'W': case 'w': return ImGuiKey_W; + case 'X': case 'x': return ImGuiKey_X; + case 'Y': case 'y': return ImGuiKey_Y; + case 'Z': case 'z': return ImGuiKey_Z; + case 256 + GLUT_KEY_F1: return ImGuiKey_F1; + case 256 + GLUT_KEY_F2: return ImGuiKey_F2; + case 256 + GLUT_KEY_F3: return ImGuiKey_F3; + case 256 + GLUT_KEY_F4: return ImGuiKey_F4; + case 256 + GLUT_KEY_F5: return ImGuiKey_F5; + case 256 + GLUT_KEY_F6: return ImGuiKey_F6; + case 256 + GLUT_KEY_F7: return ImGuiKey_F7; + case 256 + GLUT_KEY_F8: return ImGuiKey_F8; + case 256 + GLUT_KEY_F9: return ImGuiKey_F9; + case 256 + GLUT_KEY_F10: return ImGuiKey_F10; + case 256 + GLUT_KEY_F11: return ImGuiKey_F11; + case 256 + GLUT_KEY_F12: return ImGuiKey_F12; + default: return ImGuiKey_None; + } +} + +bool ImGui_ImplGLUT_Init() +{ + ImGuiIO& io = ImGui::GetIO(); + IMGUI_CHECKVERSION(); + +#ifdef FREEGLUT + io.BackendPlatformName = "imgui_impl_glut (freeglut)"; +#else + io.BackendPlatformName = "imgui_impl_glut"; +#endif + g_Time = 0; + + return true; +} + +void ImGui_ImplGLUT_InstallFuncs() +{ + glutReshapeFunc(ImGui_ImplGLUT_ReshapeFunc); + glutMotionFunc(ImGui_ImplGLUT_MotionFunc); + glutPassiveMotionFunc(ImGui_ImplGLUT_MotionFunc); + glutMouseFunc(ImGui_ImplGLUT_MouseFunc); +#ifdef __FREEGLUT_EXT_H__ + glutMouseWheelFunc(ImGui_ImplGLUT_MouseWheelFunc); +#endif + glutKeyboardFunc(ImGui_ImplGLUT_KeyboardFunc); + glutKeyboardUpFunc(ImGui_ImplGLUT_KeyboardUpFunc); + glutSpecialFunc(ImGui_ImplGLUT_SpecialFunc); + glutSpecialUpFunc(ImGui_ImplGLUT_SpecialUpFunc); +} + +void ImGui_ImplGLUT_Shutdown() +{ + ImGuiIO& io = ImGui::GetIO(); + io.BackendPlatformName = nullptr; +} + +void ImGui_ImplGLUT_NewFrame() +{ + // Setup time step + ImGuiIO& io = ImGui::GetIO(); + int current_time = glutGet(GLUT_ELAPSED_TIME); + int delta_time_ms = (current_time - g_Time); + if (delta_time_ms <= 0) + delta_time_ms = 1; + io.DeltaTime = delta_time_ms / 1000.0f; + g_Time = current_time; +} + +static void ImGui_ImplGLUT_UpdateKeyModifiers() +{ + ImGuiIO& io = ImGui::GetIO(); + int glut_key_mods = glutGetModifiers(); + io.AddKeyEvent(ImGuiMod_Ctrl, (glut_key_mods & GLUT_ACTIVE_CTRL) != 0); + io.AddKeyEvent(ImGuiMod_Shift, (glut_key_mods & GLUT_ACTIVE_SHIFT) != 0); + io.AddKeyEvent(ImGuiMod_Alt, (glut_key_mods & GLUT_ACTIVE_ALT) != 0); +} + +static void ImGui_ImplGLUT_AddKeyEvent(ImGuiKey key, bool down, int native_keycode) +{ + ImGuiIO& io = ImGui::GetIO(); + io.AddKeyEvent(key, down); + io.SetKeyEventNativeData(key, native_keycode, -1); // To support legacy indexing (<1.87 user code) +} + +void ImGui_ImplGLUT_KeyboardFunc(unsigned char c, int x, int y) +{ + // Send character to imgui + //printf("char_down_func %d '%c'\n", c, c); + ImGuiIO& io = ImGui::GetIO(); + if (c >= 32) + io.AddInputCharacter((unsigned int)c); + + ImGuiKey key = ImGui_ImplGLUT_KeyToImGuiKey(c); + ImGui_ImplGLUT_AddKeyEvent(key, true, c); + ImGui_ImplGLUT_UpdateKeyModifiers(); + (void)x; (void)y; // Unused +} + +void ImGui_ImplGLUT_KeyboardUpFunc(unsigned char c, int x, int y) +{ + //printf("char_up_func %d '%c'\n", c, c); + ImGuiKey key = ImGui_ImplGLUT_KeyToImGuiKey(c); + ImGui_ImplGLUT_AddKeyEvent(key, false, c); + ImGui_ImplGLUT_UpdateKeyModifiers(); + (void)x; (void)y; // Unused +} + +void ImGui_ImplGLUT_SpecialFunc(int key, int x, int y) +{ + //printf("key_down_func %d\n", key); + ImGuiKey imgui_key = ImGui_ImplGLUT_KeyToImGuiKey(key + 256); + ImGui_ImplGLUT_AddKeyEvent(imgui_key, true, key + 256); + ImGui_ImplGLUT_UpdateKeyModifiers(); + (void)x; (void)y; // Unused +} + +void ImGui_ImplGLUT_SpecialUpFunc(int key, int x, int y) +{ + //printf("key_up_func %d\n", key); + ImGuiKey imgui_key = ImGui_ImplGLUT_KeyToImGuiKey(key + 256); + ImGui_ImplGLUT_AddKeyEvent(imgui_key, false, key + 256); + ImGui_ImplGLUT_UpdateKeyModifiers(); + (void)x; (void)y; // Unused +} + +void ImGui_ImplGLUT_MouseFunc(int glut_button, int state, int x, int y) +{ + ImGuiIO& io = ImGui::GetIO(); + io.AddMousePosEvent((float)x, (float)y); + int button = -1; + if (glut_button == GLUT_LEFT_BUTTON) button = 0; + if (glut_button == GLUT_RIGHT_BUTTON) button = 1; + if (glut_button == GLUT_MIDDLE_BUTTON) button = 2; + if (button != -1 && (state == GLUT_DOWN || state == GLUT_UP)) + io.AddMouseButtonEvent(button, state == GLUT_DOWN); +} + +#ifdef __FREEGLUT_EXT_H__ +void ImGui_ImplGLUT_MouseWheelFunc(int button, int dir, int x, int y) +{ + ImGuiIO& io = ImGui::GetIO(); + io.AddMousePosEvent((float)x, (float)y); + if (dir != 0) + io.AddMouseWheelEvent(0.0f, dir > 0 ? 1.0f : -1.0f); + (void)button; // Unused +} +#endif + +void ImGui_ImplGLUT_ReshapeFunc(int w, int h) +{ + ImGuiIO& io = ImGui::GetIO(); + io.DisplaySize = ImVec2((float)w, (float)h); +} + +void ImGui_ImplGLUT_MotionFunc(int x, int y) +{ + ImGuiIO& io = ImGui::GetIO(); + io.AddMousePosEvent((float)x, (float)y); +} + +//----------------------------------------------------------------------------- + +#endif // #ifndef IMGUI_DISABLE diff --git a/cbits/imgui_impl_glut.h b/cbits/imgui_impl_glut.h new file mode 100644 --- /dev/null +++ b/cbits/imgui_impl_glut.h @@ -0,0 +1,48 @@ +// dear imgui: Platform Backend for GLUT/FreeGLUT +// This needs to be used along with a Renderer (e.g. OpenGL2) + +// !!! GLUT/FreeGLUT IS OBSOLETE PREHISTORIC SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!! +// !!! If someone or something is teaching you GLUT today, you are being abused. Please show some resistance. !!! +// !!! Nowadays, prefer using GLFW or SDL instead! + +// Implemented features: +// [X] Platform: Partial 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 GLUT values are obsolete since 1.87 and not supported since 1.91.5] +// Missing features or Issues: +// [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I +// [ ] Platform: Missing horizontal mouse wheel support. +// [ ] Platform: Missing mouse cursor shape/visibility support. +// [ ] Platform: Missing clipboard support (not supported by Glut). +// [ ] Platform: Missing gamepad support. +// [ ] Platform: Missing multi-viewport support (multiple windows). + +// 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 + +// Follow "Getting Started" link and check examples/ folder to learn about using backends! +IMGUI_IMPL_API bool ImGui_ImplGLUT_Init(); +IMGUI_IMPL_API void ImGui_ImplGLUT_InstallFuncs(); +IMGUI_IMPL_API void ImGui_ImplGLUT_Shutdown(); +IMGUI_IMPL_API void ImGui_ImplGLUT_NewFrame(); + +// You can call ImGui_ImplGLUT_InstallFuncs() to get all those functions installed automatically, +// or call them yourself from your own GLUT handlers. We are using the same weird names as GLUT for consistency.. +//------------------------------------ GLUT name ---------------------------------------------- Decent Name --------- +IMGUI_IMPL_API void ImGui_ImplGLUT_ReshapeFunc(int w, int h); // ~ ResizeFunc +IMGUI_IMPL_API void ImGui_ImplGLUT_MotionFunc(int x, int y); // ~ MouseMoveFunc +IMGUI_IMPL_API void ImGui_ImplGLUT_MouseFunc(int button, int state, int x, int y); // ~ MouseButtonFunc +IMGUI_IMPL_API void ImGui_ImplGLUT_MouseWheelFunc(int button, int dir, int x, int y); // ~ MouseWheelFunc +IMGUI_IMPL_API void ImGui_ImplGLUT_KeyboardFunc(unsigned char c, int x, int y); // ~ CharPressedFunc +IMGUI_IMPL_API void ImGui_ImplGLUT_KeyboardUpFunc(unsigned char c, int x, int y); // ~ CharReleasedFunc +IMGUI_IMPL_API void ImGui_ImplGLUT_SpecialFunc(int key, int x, int y); // ~ KeyPressedFunc +IMGUI_IMPL_API void ImGui_ImplGLUT_SpecialUpFunc(int key, int x, int y); // ~ KeyReleasedFunc + +#endif // #ifndef IMGUI_DISABLE diff --git a/dear-imgui-impl-glut.cabal b/dear-imgui-impl-glut.cabal new file mode 100644 --- /dev/null +++ b/dear-imgui-impl-glut.cabal @@ -0,0 +1,57 @@ +cabal-version: 2.2 + +-- This file has been generated from package.yaml by hpack version 0.39.6. +-- +-- see: https://github.com/sol/hpack + +name: dear-imgui-impl-glut +version: 1.0.0 +synopsis: GLUT/FreeGLUT platform-backend bindings for dear-imgui-raw. +description: Generated with dear_bindings from the imgui_impl_glut backend that ships with Dear ImGui. +category: GUI +maintainer: IC Rainbow +license: BSD-3-Clause +license-file: LICENSE +build-type: Simple +extra-source-files: + cbits/dcimgui_impl_glut.h + cbits/DearImGuiWrappers.h + cbits/imgui_impl_glut.h +extra-doc-files: + README.md + CHANGELOG.md + +library + exposed-modules: + DearImGui.Raw.Impl.GLUT + other-modules: + Paths_dear_imgui_impl_glut + autogen-modules: + Paths_dear_imgui_impl_glut + hs-source-dirs: + src + default-extensions: + BlockArguments + DataKinds + DuplicateRecordFields + LambdaCase + NoFieldSelectors + OverloadedRecordDot + OverloadedStrings + StrictData + ghc-options: -Wall -optc-Wno-discarded-qualifiers -optc-Wno-incompatible-pointer-types + cxx-options: -std=c++11 -fpermissive + include-dirs: + cbits + cxx-sources: + cbits/dcimgui_impl_glut.cpp + cbits/DearImGuiWrappers.cpp + cbits/imgui_impl_glut.cpp + pkgconfig-depends: + glut + build-tool-depends: + hsc2hs:hsc2hs + build-depends: + base >=4.16 && <5 + , dear-imgui-raw ==1.0.* + default-language: GHC2021 diff --git a/src/DearImGui/Raw/Impl/GLUT.hsc b/src/DearImGui/Raw/Impl/GLUT.hsc new file mode 100644 --- /dev/null +++ b/src/DearImGui/Raw/Impl/GLUT.hsc @@ -0,0 +1,106 @@ +{-# LANGUAGE CApiFFI #-} +{-# LANGUAGE PatternSynonyms #-} + +-- This file was generated by dear-bindings-ffi. Do not edit by hand. + +module DearImGui.Raw.Impl.GLUT + ( init + , installFuncs + , keyboardFunc + , keyboardUpFunc + , motionFunc + , mouseFunc + , mouseWheelFunc + , newFrame + , reshapeFunc + , shutdown + , specialFunc + , specialUpFunc + ) where + +import Foreign.C.Types +import Prelude hiding (init) + +#include "dcimgui_impl_glut.h" + +-- functions + +-- C: bool ImGui_ImplGLUT_Init() +foreign import capi safe "dcimgui_impl_glut.h cImGui_ImplGLUT_Init" + init :: IO CBool + +-- C: void ImGui_ImplGLUT_InstallFuncs() +foreign import capi safe "dcimgui_impl_glut.h cImGui_ImplGLUT_InstallFuncs" + installFuncs :: IO () + +-- C: void ImGui_ImplGLUT_KeyboardFunc(unsigned char c, int x, int y) +foreign import capi safe "dcimgui_impl_glut.h cImGui_ImplGLUT_KeyboardFunc" + keyboardFunc + :: CUChar -- ^ c + -> CInt -- ^ x + -> CInt -- ^ y + -> IO () + +-- C: void ImGui_ImplGLUT_KeyboardUpFunc(unsigned char c, int x, int y) +foreign import capi safe "dcimgui_impl_glut.h cImGui_ImplGLUT_KeyboardUpFunc" + keyboardUpFunc + :: CUChar -- ^ c + -> CInt -- ^ x + -> CInt -- ^ y + -> IO () + +-- C: void ImGui_ImplGLUT_MotionFunc(int x, int y) +foreign import capi safe "dcimgui_impl_glut.h cImGui_ImplGLUT_MotionFunc" + motionFunc + :: CInt -- ^ x + -> CInt -- ^ y + -> IO () + +-- C: void ImGui_ImplGLUT_MouseFunc(int button, int state, int x, int y) +foreign import capi safe "dcimgui_impl_glut.h cImGui_ImplGLUT_MouseFunc" + mouseFunc + :: CInt -- ^ button + -> CInt -- ^ state + -> CInt -- ^ x + -> CInt -- ^ y + -> IO () + +-- C: void ImGui_ImplGLUT_MouseWheelFunc(int button, int dir, int x, int y) +foreign import capi safe "dcimgui_impl_glut.h cImGui_ImplGLUT_MouseWheelFunc" + mouseWheelFunc + :: CInt -- ^ button + -> CInt -- ^ dir + -> CInt -- ^ x + -> CInt -- ^ y + -> IO () + +-- C: void ImGui_ImplGLUT_NewFrame() +foreign import capi safe "dcimgui_impl_glut.h cImGui_ImplGLUT_NewFrame" + newFrame :: IO () + +-- C: void ImGui_ImplGLUT_ReshapeFunc(int w, int h) +foreign import capi safe "dcimgui_impl_glut.h cImGui_ImplGLUT_ReshapeFunc" + reshapeFunc + :: CInt -- ^ w + -> CInt -- ^ h + -> IO () + +-- C: void ImGui_ImplGLUT_Shutdown() +foreign import capi safe "dcimgui_impl_glut.h cImGui_ImplGLUT_Shutdown" + shutdown :: IO () + +-- C: void ImGui_ImplGLUT_SpecialFunc(int key, int x, int y) +foreign import capi safe "dcimgui_impl_glut.h cImGui_ImplGLUT_SpecialFunc" + specialFunc + :: CInt -- ^ key + -> CInt -- ^ x + -> CInt -- ^ y + -> IO () + +-- C: void ImGui_ImplGLUT_SpecialUpFunc(int key, int x, int y) +foreign import capi safe "dcimgui_impl_glut.h cImGui_ImplGLUT_SpecialUpFunc" + specialUpFunc + :: CInt -- ^ key + -> CInt -- ^ x + -> CInt -- ^ y + -> IO ()