// dear imgui: Platform Backend for GLFW // This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan, WebGPU..) // (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.) // (Requires: GLFW 3.1+. Prefer GLFW 3.3+ or GLFW 3.4+ for full feature support.) // Implemented features: // [X] Platform: Clipboard support. // [X] Platform: Mouse support. Can discriminate Mouse/TouchScreen/Pen (Windows only). // [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 GLFW_KEY_* values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set] // [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'. // [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange' (note: the resizing cursors requires GLFW 3.4+). // 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) // 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 // 2024-07-31: Added ImGui_ImplGlfw_Sleep() helper function for usage by our examples app, since GLFW doesn't provide one. // 2024-07-08: *BREAKING* Renamed ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback to ImGui_ImplGlfw_InstallEmscriptenCallbacks(), added GLFWWindow* parameter. // 2024-07-08: Emscripten: Added support for GLFW3 contrib port (GLFW 3.4.0 features + bug fixes): to enable, replace -sUSE_GLFW=3 with --use-port=contrib.glfw3 (requires emscripten 3.1.59+) (https://github.com/pongasoft/emscripten-glfw) // 2024-07-02: Emscripten: Added io.PlatformOpenInShellFn() handler for Emscripten versions. // 2023-12-19: Emscripten: Added ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback() to register canvas selector and auto-resize GLFW window. // 2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys. // 2023-07-18: Inputs: Revert ignoring mouse data on GLFW_CURSOR_DISABLED as it can be used differently. User may set ImGuiConfigFLags_NoMouse if desired. (#5625, #6609) // 2023-06-12: Accept glfwGetTime() not returning a monotonically increasing value. This seems to happens on some Windows setup when peripherals disconnect, and is likely to also happen on browser + Emscripten. (#6491) // 2023-04-04: Inputs: Added support for io.AddMouseSourceEvent() to discriminate ImGuiMouseSource_Mouse/ImGuiMouseSource_TouchScreen/ImGuiMouseSource_Pen on Windows ONLY, using a custom WndProc hook. (#2702) // 2023-03-16: Inputs: Fixed key modifiers handling on secondary viewports (docking branch). Broken on 2023/01/04. (#6248, #6034) // 2023-03-14: Emscripten: Avoid using glfwGetError() and glfwGetGamepadState() which are not correctly implemented in Emscripten emulation. (#6240) // 2023-02-03: Emscripten: Registering custom low-level mouse wheel handler to get more accurate scrolling impulses on Emscripten. (#4019, #6096) // 2023-01-04: Inputs: Fixed mods state on Linux when using Alt-GR text input (e.g. German keyboard layout), could lead to broken text input. Revert a 2022/01/17 change were we resumed using mods provided by GLFW, turns out they were faulty. // 2022-11-22: Perform a dummy glfwGetError() read to cancel missing names with glfwGetKeyName(). (#5908) // 2022-10-18: Perform a dummy glfwGetError() read to cancel missing mouse cursors errors. Using GLFW_VERSION_COMBINED directly. (#5785) // 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11. // 2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported). // 2022-09-01: Inputs: Honor GLFW_CURSOR_DISABLED by not setting mouse position *EDIT* Reverted 2023-07-18. // 2022-04-30: Inputs: Fixed ImGui_ImplGlfw_TranslateUntranslatedKey() for lower case letters on OSX. // 2022-03-23: Inputs: Fixed a regression in 1.87 which resulted in keyboard modifiers events being reported incorrectly on Linux/X11. // 2022-02-07: Added ImGui_ImplGlfw_InstallCallbacks()/ImGui_ImplGlfw_RestoreCallbacks() helpers to facilitate user installing callbacks after initializing backend. // 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: *BREAKING CHANGE*: Now using glfwSetCursorPosCallback(). If you called ImGui_ImplGlfw_InitXXX() with install_callbacks = false, you MUST install glfwSetCursorPosCallback() and forward it to the backend via ImGui_ImplGlfw_CursorPosCallback(). // 2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range. // 2022-01-05: Inputs: Converting GLFW untranslated keycodes back to translated keycodes (in the ImGui_ImplGlfw_KeyCallback() function) in order to match the behavior of every other backend, and facilitate the use of GLFW with lettered-shortcuts API. // 2021-08-17: *BREAKING CHANGE*: Now using glfwSetWindowFocusCallback() to calling io.AddFocusEvent(). If you called ImGui_ImplGlfw_InitXXX() with install_callbacks = false, you MUST install glfwSetWindowFocusCallback() and forward it to the backend via ImGui_ImplGlfw_WindowFocusCallback(). // 2021-07-29: *BREAKING CHANGE*: Now using glfwSetCursorEnterCallback(). MousePos is correctly reported when the host platform window is hovered but not focused. If you called ImGui_ImplGlfw_InitXXX() with install_callbacks = false, you MUST install glfwSetWindowFocusCallback() callback and forward it to the backend via ImGui_ImplGlfw_CursorEnterCallback(). // 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). // 2020-01-17: Inputs: Disable error callback while assigning mouse cursors because some X11 setup don't have them and it generates errors. // 2019-12-05: Inputs: Added support for new mouse cursors added in GLFW 3.4+ (resizing cursors, not allowed cursor). // 2019-10-18: Misc: Previously installed user callbacks are now restored on shutdown. // 2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter. // 2019-05-11: Inputs: Don't filter value from character callback before calling AddInputCharacter(). // 2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized. // 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window. // 2018-11-07: Inputs: When installing our GLFW callbacks, we save user's previously installed ones - if any - and chain call them. // 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_glfw.cpp/.h away from the old combined GLFW+OpenGL/Vulkan examples. // 2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag. // 2018-02-20: Inputs: Added support for mouse cursors (ImGui::GetMouseCursor() value, passed to glfwSetCursor()). // 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. // 2018-01-25: Inputs: Added gamepad support if ImGuiConfigFlags_NavEnableGamepad is set. // 2018-01-25: Inputs: Honoring the io.WantSetMousePos by repositioning the mouse (when using navigation and ImGuiConfigFlags_NavMoveMouse is set). // 2018-01-20: Inputs: Added Horizontal Mouse Wheel support. // 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_glfw.h" // Clang warnings with -Weverything #if defined(__clang__) #pragma clang diagnostic push #pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast #pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness #endif // GLFW #include #ifdef _WIN32 #undef APIENTRY #ifndef GLFW_EXPOSE_NATIVE_WIN32 #define GLFW_EXPOSE_NATIVE_WIN32 #endif #include // for glfwGetWin32Window() #endif #ifdef __APPLE__ #ifndef GLFW_EXPOSE_NATIVE_COCOA #define GLFW_EXPOSE_NATIVE_COCOA #endif #include // for glfwGetCocoaWindow() #endif #ifndef _WIN32 #include // for usleep() #endif #ifdef __EMSCRIPTEN__ #include #include #ifdef EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3 #include #else #define EMSCRIPTEN_USE_EMBEDDED_GLFW3 #endif #endif // We gather version tests as define in order to easily see which features are version-dependent. #define GLFW_VERSION_COMBINED (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 + GLFW_VERSION_REVISION) #ifdef GLFW_RESIZE_NESW_CURSOR // Let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2019-11-29 (cursors defines) // FIXME: Remove when GLFW 3.4 is released? #define GLFW_HAS_NEW_CURSORS (GLFW_VERSION_COMBINED >= 3400) // 3.4+ GLFW_RESIZE_ALL_CURSOR, GLFW_RESIZE_NESW_CURSOR, GLFW_RESIZE_NWSE_CURSOR, GLFW_NOT_ALLOWED_CURSOR #else #define GLFW_HAS_NEW_CURSORS (0) #endif #define GLFW_HAS_GAMEPAD_API (GLFW_VERSION_COMBINED >= 3300) // 3.3+ glfwGetGamepadState() new api #define GLFW_HAS_GETKEYNAME (GLFW_VERSION_COMBINED >= 3200) // 3.2+ glfwGetKeyName() #define GLFW_HAS_GETERROR (GLFW_VERSION_COMBINED >= 3300) // 3.3+ glfwGetError() // GLFW data enum GlfwClientApi { GlfwClientApi_Unknown, GlfwClientApi_OpenGL, GlfwClientApi_Vulkan, }; struct ImGui_ImplGlfw_Data { GLFWwindow* Window; GlfwClientApi ClientApi; double Time; GLFWwindow* MouseWindow; GLFWcursor* MouseCursors[ImGuiMouseCursor_COUNT]; ImVec2 LastValidMousePos; bool InstalledCallbacks; bool CallbacksChainForAllWindows; #ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3 const char* CanvasSelector; #endif // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any. GLFWwindowfocusfun PrevUserCallbackWindowFocus; GLFWcursorposfun PrevUserCallbackCursorPos; GLFWcursorenterfun PrevUserCallbackCursorEnter; GLFWmousebuttonfun PrevUserCallbackMousebutton; GLFWscrollfun PrevUserCallbackScroll; GLFWkeyfun PrevUserCallbackKey; GLFWcharfun PrevUserCallbackChar; GLFWmonitorfun PrevUserCallbackMonitor; #ifdef _WIN32 WNDPROC PrevWndProc; #endif ImGui_ImplGlfw_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. // - Because glfwPollEvents() process all windows and some events may be called outside of it, you will need to register your own callbacks // (passing install_callbacks=false in ImGui_ImplGlfw_InitXXX functions), set the current dear imgui context and then call our callbacks. // - Otherwise we may need to store a GLFWWindow* -> ImGuiContext* map and handle this in the backend, adding a little bit of extra complexity to it. // FIXME: some shared resources (mouse cursor shape, gamepad) are mishandled when using multi-context. static ImGui_ImplGlfw_Data* ImGui_ImplGlfw_GetBackendData() { return ImGui::GetCurrentContext() ? (ImGui_ImplGlfw_Data*)ImGui::GetIO().BackendPlatformUserData : nullptr; } // Functions static ImGuiKey ImGui_ImplGlfw_KeyToImGuiKey(int key) { switch (key) { case GLFW_KEY_TAB: return ImGuiKey_Tab; case GLFW_KEY_LEFT: return ImGuiKey_LeftArrow; case GLFW_KEY_RIGHT: return ImGuiKey_RightArrow; case GLFW_KEY_UP: return ImGuiKey_UpArrow; case GLFW_KEY_DOWN: return ImGuiKey_DownArrow; case GLFW_KEY_PAGE_UP: return ImGuiKey_PageUp; case GLFW_KEY_PAGE_DOWN: return ImGuiKey_PageDown; case GLFW_KEY_HOME: return ImGuiKey_Home; case GLFW_KEY_END: return ImGuiKey_End; case GLFW_KEY_INSERT: return ImGuiKey_Insert; case GLFW_KEY_DELETE: return ImGuiKey_Delete; case GLFW_KEY_BACKSPACE: return ImGuiKey_Backspace; case GLFW_KEY_SPACE: return ImGuiKey_Space; case GLFW_KEY_ENTER: return ImGuiKey_Enter; case GLFW_KEY_ESCAPE: return ImGuiKey_Escape; case GLFW_KEY_APOSTROPHE: return ImGuiKey_Apostrophe; case GLFW_KEY_COMMA: return ImGuiKey_Comma; case GLFW_KEY_MINUS: return ImGuiKey_Minus; case GLFW_KEY_PERIOD: return ImGuiKey_Period; case GLFW_KEY_SLASH: return ImGuiKey_Slash; case GLFW_KEY_SEMICOLON: return ImGuiKey_Semicolon; case GLFW_KEY_EQUAL: return ImGuiKey_Equal; case GLFW_KEY_LEFT_BRACKET: return ImGuiKey_LeftBracket; case GLFW_KEY_BACKSLASH: return ImGuiKey_Backslash; case GLFW_KEY_RIGHT_BRACKET: return ImGuiKey_RightBracket; case GLFW_KEY_GRAVE_ACCENT: return ImGuiKey_GraveAccent; case GLFW_KEY_CAPS_LOCK: return ImGuiKey_CapsLock; case GLFW_KEY_SCROLL_LOCK: return ImGuiKey_ScrollLock; case GLFW_KEY_NUM_LOCK: return ImGuiKey_NumLock; case GLFW_KEY_PRINT_SCREEN: return ImGuiKey_PrintScreen; case GLFW_KEY_PAUSE: return ImGuiKey_Pause; case GLFW_KEY_KP_0: return ImGuiKey_Keypad0; case GLFW_KEY_KP_1: return ImGuiKey_Keypad1; case GLFW_KEY_KP_2: return ImGuiKey_Keypad2; case GLFW_KEY_KP_3: return ImGuiKey_Keypad3; case GLFW_KEY_KP_4: return ImGuiKey_Keypad4; case GLFW_KEY_KP_5: return ImGuiKey_Keypad5; case GLFW_KEY_KP_6: return ImGuiKey_Keypad6; case GLFW_KEY_KP_7: return ImGuiKey_Keypad7; case GLFW_KEY_KP_8: return ImGuiKey_Keypad8; case GLFW_KEY_KP_9: return ImGuiKey_Keypad9; case GLFW_KEY_KP_DECIMAL: return ImGuiKey_KeypadDecimal; case GLFW_KEY_KP_DIVIDE: return ImGuiKey_KeypadDivide; case GLFW_KEY_KP_MULTIPLY: return ImGuiKey_KeypadMultiply; case GLFW_KEY_KP_SUBTRACT: return ImGuiKey_KeypadSubtract; case GLFW_KEY_KP_ADD: return ImGuiKey_KeypadAdd; case GLFW_KEY_KP_ENTER: return ImGuiKey_KeypadEnter; case GLFW_KEY_KP_EQUAL: return ImGuiKey_KeypadEqual; case GLFW_KEY_LEFT_SHIFT: return ImGuiKey_LeftShift; case GLFW_KEY_LEFT_CONTROL: return ImGuiKey_LeftCtrl; case GLFW_KEY_LEFT_ALT: return ImGuiKey_LeftAlt; case GLFW_KEY_LEFT_SUPER: return ImGuiKey_LeftSuper; case GLFW_KEY_RIGHT_SHIFT: return ImGuiKey_RightShift; case GLFW_KEY_RIGHT_CONTROL: return ImGuiKey_RightCtrl; case GLFW_KEY_RIGHT_ALT: return ImGuiKey_RightAlt; case GLFW_KEY_RIGHT_SUPER: return ImGuiKey_RightSuper; case GLFW_KEY_MENU: return ImGuiKey_Menu; case GLFW_KEY_0: return ImGuiKey_0; case GLFW_KEY_1: return ImGuiKey_1; case GLFW_KEY_2: return ImGuiKey_2; case GLFW_KEY_3: return ImGuiKey_3; case GLFW_KEY_4: return ImGuiKey_4; case GLFW_KEY_5: return ImGuiKey_5; case GLFW_KEY_6: return ImGuiKey_6; case GLFW_KEY_7: return ImGuiKey_7; case GLFW_KEY_8: return ImGuiKey_8; case GLFW_KEY_9: return ImGuiKey_9; case GLFW_KEY_A: return ImGuiKey_A; case GLFW_KEY_B: return ImGuiKey_B; case GLFW_KEY_C: return ImGuiKey_C; case GLFW_KEY_D: return ImGuiKey_D; case GLFW_KEY_E: return ImGuiKey_E; case GLFW_KEY_F: return ImGuiKey_F; case GLFW_KEY_G: return ImGuiKey_G; case GLFW_KEY_H: return ImGuiKey_H; case GLFW_KEY_I: return ImGuiKey_I; case GLFW_KEY_J: return ImGuiKey_J; case GLFW_KEY_K: return ImGuiKey_K; case GLFW_KEY_L: return ImGuiKey_L; case GLFW_KEY_M: return ImGuiKey_M; case GLFW_KEY_N: return ImGuiKey_N; case GLFW_KEY_O: return ImGuiKey_O; case GLFW_KEY_P: return ImGuiKey_P; case GLFW_KEY_Q: return ImGuiKey_Q; case GLFW_KEY_R: return ImGuiKey_R; case GLFW_KEY_S: return ImGuiKey_S; case GLFW_KEY_T: return ImGuiKey_T; case GLFW_KEY_U: return ImGuiKey_U; case GLFW_KEY_V: return ImGuiKey_V; case GLFW_KEY_W: return ImGuiKey_W; case GLFW_KEY_X: return ImGuiKey_X; case GLFW_KEY_Y: return ImGuiKey_Y; case GLFW_KEY_Z: return ImGuiKey_Z; case GLFW_KEY_F1: return ImGuiKey_F1; case GLFW_KEY_F2: return ImGuiKey_F2; case GLFW_KEY_F3: return ImGuiKey_F3; case GLFW_KEY_F4: return ImGuiKey_F4; case GLFW_KEY_F5: return ImGuiKey_F5; case GLFW_KEY_F6: return ImGuiKey_F6; case GLFW_KEY_F7: return ImGuiKey_F7; case GLFW_KEY_F8: return ImGuiKey_F8; case GLFW_KEY_F9: return ImGuiKey_F9; case GLFW_KEY_F10: return ImGuiKey_F10; case GLFW_KEY_F11: return ImGuiKey_F11; case GLFW_KEY_F12: return ImGuiKey_F12; case GLFW_KEY_F13: return ImGuiKey_F13; case GLFW_KEY_F14: return ImGuiKey_F14; case GLFW_KEY_F15: return ImGuiKey_F15; case GLFW_KEY_F16: return ImGuiKey_F16; case GLFW_KEY_F17: return ImGuiKey_F17; case GLFW_KEY_F18: return ImGuiKey_F18; case GLFW_KEY_F19: return ImGuiKey_F19; case GLFW_KEY_F20: return ImGuiKey_F20; case GLFW_KEY_F21: return ImGuiKey_F21; case GLFW_KEY_F22: return ImGuiKey_F22; case GLFW_KEY_F23: return ImGuiKey_F23; case GLFW_KEY_F24: return ImGuiKey_F24; default: return ImGuiKey_None; } } // X11 does not include current pressed/released modifier key in 'mods' flags submitted by GLFW // See https://github.com/ocornut/imgui/issues/6034 and https://github.com/glfw/glfw/issues/1630 static void ImGui_ImplGlfw_UpdateKeyModifiers(GLFWwindow* window) { ImGuiIO& io = ImGui::GetIO(); io.AddKeyEvent(ImGuiMod_Ctrl, (glfwGetKey(window, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS) || (glfwGetKey(window, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS)); io.AddKeyEvent(ImGuiMod_Shift, (glfwGetKey(window, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS) || (glfwGetKey(window, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS)); io.AddKeyEvent(ImGuiMod_Alt, (glfwGetKey(window, GLFW_KEY_LEFT_ALT) == GLFW_PRESS) || (glfwGetKey(window, GLFW_KEY_RIGHT_ALT) == GLFW_PRESS)); io.AddKeyEvent(ImGuiMod_Super, (glfwGetKey(window, GLFW_KEY_LEFT_SUPER) == GLFW_PRESS) || (glfwGetKey(window, GLFW_KEY_RIGHT_SUPER) == GLFW_PRESS)); } static bool ImGui_ImplGlfw_ShouldChainCallback(GLFWwindow* window) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); return bd->CallbacksChainForAllWindows ? true : (window == bd->Window); } void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); if (bd->PrevUserCallbackMousebutton != nullptr && ImGui_ImplGlfw_ShouldChainCallback(window)) bd->PrevUserCallbackMousebutton(window, button, action, mods); ImGui_ImplGlfw_UpdateKeyModifiers(window); ImGuiIO& io = ImGui::GetIO(); if (button >= 0 && button < ImGuiMouseButton_COUNT) io.AddMouseButtonEvent(button, action == GLFW_PRESS); } void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); if (bd->PrevUserCallbackScroll != nullptr && ImGui_ImplGlfw_ShouldChainCallback(window)) bd->PrevUserCallbackScroll(window, xoffset, yoffset); #ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3 // Ignore GLFW events: will be processed in ImGui_ImplEmscripten_WheelCallback(). return; #endif ImGuiIO& io = ImGui::GetIO(); io.AddMouseWheelEvent((float)xoffset, (float)yoffset); } static int ImGui_ImplGlfw_TranslateUntranslatedKey(int key, int scancode) { #if GLFW_HAS_GETKEYNAME && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3) // GLFW 3.1+ attempts to "untranslate" keys, which goes the opposite of what every other framework does, making using lettered shortcuts difficult. // (It had reasons to do so: namely GLFW is/was more likely to be used for WASD-type game controls rather than lettered shortcuts, but IHMO the 3.1 change could have been done differently) // See https://github.com/glfw/glfw/issues/1502 for details. // Adding a workaround to undo this (so our keys are translated->untranslated->translated, likely a lossy process). // This won't cover edge cases but this is at least going to cover common cases. if (key >= GLFW_KEY_KP_0 && key <= GLFW_KEY_KP_EQUAL) return key; GLFWerrorfun prev_error_callback = glfwSetErrorCallback(nullptr); const char* key_name = glfwGetKeyName(key, scancode); glfwSetErrorCallback(prev_error_callback); #if GLFW_HAS_GETERROR && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3) // Eat errors (see #5908) (void)glfwGetError(nullptr); #endif if (key_name && key_name[0] != 0 && key_name[1] == 0) { const char char_names[] = "`-=[]\\,;\'./"; const int char_keys[] = { GLFW_KEY_GRAVE_ACCENT, GLFW_KEY_MINUS, GLFW_KEY_EQUAL, GLFW_KEY_LEFT_BRACKET, GLFW_KEY_RIGHT_BRACKET, GLFW_KEY_BACKSLASH, GLFW_KEY_COMMA, GLFW_KEY_SEMICOLON, GLFW_KEY_APOSTROPHE, GLFW_KEY_PERIOD, GLFW_KEY_SLASH, 0 }; IM_ASSERT(IM_ARRAYSIZE(char_names) == IM_ARRAYSIZE(char_keys)); if (key_name[0] >= '0' && key_name[0] <= '9') { key = GLFW_KEY_0 + (key_name[0] - '0'); } else if (key_name[0] >= 'A' && key_name[0] <= 'Z') { key = GLFW_KEY_A + (key_name[0] - 'A'); } else if (key_name[0] >= 'a' && key_name[0] <= 'z') { key = GLFW_KEY_A + (key_name[0] - 'a'); } else if (const char* p = strchr(char_names, key_name[0])) { key = char_keys[p - char_names]; } } // if (action == GLFW_PRESS) printf("key %d scancode %d name '%s'\n", key, scancode, key_name); #else IM_UNUSED(scancode); #endif return key; } void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int keycode, int scancode, int action, int mods) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); if (bd->PrevUserCallbackKey != nullptr && ImGui_ImplGlfw_ShouldChainCallback(window)) bd->PrevUserCallbackKey(window, keycode, scancode, action, mods); if (action != GLFW_PRESS && action != GLFW_RELEASE) return; ImGui_ImplGlfw_UpdateKeyModifiers(window); keycode = ImGui_ImplGlfw_TranslateUntranslatedKey(keycode, scancode); ImGuiIO& io = ImGui::GetIO(); ImGuiKey imgui_key = ImGui_ImplGlfw_KeyToImGuiKey(keycode); io.AddKeyEvent(imgui_key, (action == GLFW_PRESS)); io.SetKeyEventNativeData(imgui_key, keycode, scancode); // To support legacy indexing (<1.87 user code) } void ImGui_ImplGlfw_WindowFocusCallback(GLFWwindow* window, int focused) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); if (bd->PrevUserCallbackWindowFocus != nullptr && ImGui_ImplGlfw_ShouldChainCallback(window)) bd->PrevUserCallbackWindowFocus(window, focused); ImGuiIO& io = ImGui::GetIO(); io.AddFocusEvent(focused != 0); } void ImGui_ImplGlfw_CursorPosCallback(GLFWwindow* window, double x, double y) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); if (bd->PrevUserCallbackCursorPos != nullptr && ImGui_ImplGlfw_ShouldChainCallback(window)) bd->PrevUserCallbackCursorPos(window, x, y); ImGuiIO& io = ImGui::GetIO(); io.AddMousePosEvent((float)x, (float)y); bd->LastValidMousePos = ImVec2((float)x, (float)y); } // Workaround: X11 seems to send spurious Leave/Enter events which would make us lose our position, // so we back it up and restore on Leave/Enter (see https://github.com/ocornut/imgui/issues/4984) void ImGui_ImplGlfw_CursorEnterCallback(GLFWwindow* window, int entered) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); if (bd->PrevUserCallbackCursorEnter != nullptr && ImGui_ImplGlfw_ShouldChainCallback(window)) bd->PrevUserCallbackCursorEnter(window, entered); ImGuiIO& io = ImGui::GetIO(); if (entered) { bd->MouseWindow = window; io.AddMousePosEvent(bd->LastValidMousePos.x, bd->LastValidMousePos.y); } else if (!entered && bd->MouseWindow == window) { bd->LastValidMousePos = io.MousePos; bd->MouseWindow = nullptr; io.AddMousePosEvent(-FLT_MAX, -FLT_MAX); } } void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); if (bd->PrevUserCallbackChar != nullptr && ImGui_ImplGlfw_ShouldChainCallback(window)) bd->PrevUserCallbackChar(window, c); ImGuiIO& io = ImGui::GetIO(); io.AddInputCharacter(c); } void ImGui_ImplGlfw_MonitorCallback(GLFWmonitor*, int) { // Unused in 'master' branch but 'docking' branch will use this, so we declare it ahead of it so if you have to install callbacks you can install this one too. } #ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3 static EM_BOOL ImGui_ImplEmscripten_WheelCallback(int, const EmscriptenWheelEvent* ev, void*) { // Mimic Emscripten_HandleWheel() in SDL. // Corresponding equivalent in GLFW JS emulation layer has incorrect quantizing preventing small values. See #6096 float multiplier = 0.0f; if (ev->deltaMode == DOM_DELTA_PIXEL) { multiplier = 1.0f / 100.0f; } // 100 pixels make up a step. else if (ev->deltaMode == DOM_DELTA_LINE) { multiplier = 1.0f / 3.0f; } // 3 lines make up a step. else if (ev->deltaMode == DOM_DELTA_PAGE) { multiplier = 80.0f; } // A page makes up 80 steps. float wheel_x = ev->deltaX * -multiplier; float wheel_y = ev->deltaY * -multiplier; ImGuiIO& io = ImGui::GetIO(); io.AddMouseWheelEvent(wheel_x, wheel_y); //IMGUI_DEBUG_LOG("[Emsc] mode %d dx: %.2f, dy: %.2f, dz: %.2f --> feed %.2f %.2f\n", (int)ev->deltaMode, ev->deltaX, ev->deltaY, ev->deltaZ, wheel_x, wheel_y); return EM_TRUE; } #endif #ifdef _WIN32 // GLFW doesn't allow to distinguish Mouse vs TouchScreen vs Pen. // Add support for Win32 (based on imgui_impl_win32), because we rely on _TouchScreen info to trickle inputs differently. static ImGuiMouseSource GetMouseSourceFromMessageExtraInfo() { LPARAM extra_info = ::GetMessageExtraInfo(); if ((extra_info & 0xFFFFFF80) == 0xFF515700) return ImGuiMouseSource_Pen; if ((extra_info & 0xFFFFFF80) == 0xFF515780) return ImGuiMouseSource_TouchScreen; return ImGuiMouseSource_Mouse; } static LRESULT CALLBACK ImGui_ImplGlfw_WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); switch (msg) { case WM_MOUSEMOVE: case WM_NCMOUSEMOVE: case WM_LBUTTONDOWN: case WM_LBUTTONDBLCLK: case WM_LBUTTONUP: case WM_RBUTTONDOWN: case WM_RBUTTONDBLCLK: case WM_RBUTTONUP: case WM_MBUTTONDOWN: case WM_MBUTTONDBLCLK: case WM_MBUTTONUP: case WM_XBUTTONDOWN: case WM_XBUTTONDBLCLK: case WM_XBUTTONUP: ImGui::GetIO().AddMouseSourceEvent(GetMouseSourceFromMessageExtraInfo()); break; } return ::CallWindowProcW(bd->PrevWndProc, hWnd, msg, wParam, lParam); } #endif void ImGui_ImplGlfw_InstallCallbacks(GLFWwindow* window) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); IM_ASSERT(bd->InstalledCallbacks == false && "Callbacks already installed!"); IM_ASSERT(bd->Window == window); bd->PrevUserCallbackWindowFocus = glfwSetWindowFocusCallback(window, ImGui_ImplGlfw_WindowFocusCallback); bd->PrevUserCallbackCursorEnter = glfwSetCursorEnterCallback(window, ImGui_ImplGlfw_CursorEnterCallback); bd->PrevUserCallbackCursorPos = glfwSetCursorPosCallback(window, ImGui_ImplGlfw_CursorPosCallback); bd->PrevUserCallbackMousebutton = glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback); bd->PrevUserCallbackScroll = glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback); bd->PrevUserCallbackKey = glfwSetKeyCallback(window, ImGui_ImplGlfw_KeyCallback); bd->PrevUserCallbackChar = glfwSetCharCallback(window, ImGui_ImplGlfw_CharCallback); bd->PrevUserCallbackMonitor = glfwSetMonitorCallback(ImGui_ImplGlfw_MonitorCallback); bd->InstalledCallbacks = true; } void ImGui_ImplGlfw_RestoreCallbacks(GLFWwindow* window) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); IM_ASSERT(bd->InstalledCallbacks == true && "Callbacks not installed!"); IM_ASSERT(bd->Window == window); glfwSetWindowFocusCallback(window, bd->PrevUserCallbackWindowFocus); glfwSetCursorEnterCallback(window, bd->PrevUserCallbackCursorEnter); glfwSetCursorPosCallback(window, bd->PrevUserCallbackCursorPos); glfwSetMouseButtonCallback(window, bd->PrevUserCallbackMousebutton); glfwSetScrollCallback(window, bd->PrevUserCallbackScroll); glfwSetKeyCallback(window, bd->PrevUserCallbackKey); glfwSetCharCallback(window, bd->PrevUserCallbackChar); glfwSetMonitorCallback(bd->PrevUserCallbackMonitor); bd->InstalledCallbacks = false; bd->PrevUserCallbackWindowFocus = nullptr; bd->PrevUserCallbackCursorEnter = nullptr; bd->PrevUserCallbackCursorPos = nullptr; bd->PrevUserCallbackMousebutton = nullptr; bd->PrevUserCallbackScroll = nullptr; bd->PrevUserCallbackKey = nullptr; bd->PrevUserCallbackChar = nullptr; bd->PrevUserCallbackMonitor = nullptr; } // Set to 'true' to enable chaining installed callbacks for all windows (including secondary viewports created by backends or by user. // This is 'false' by default meaning we only chain callbacks for the main viewport. // We cannot set this to 'true' by default because user callbacks code may be not testing the 'window' parameter of their callback. // If you set this to 'true' your user callback code will need to make sure you are testing the 'window' parameter. void ImGui_ImplGlfw_SetCallbacksChainForAllWindows(bool chain_for_all_windows) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); bd->CallbacksChainForAllWindows = chain_for_all_windows; } #ifdef __EMSCRIPTEN__ #if EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3 >= 3'4'0'20240817 void ImGui_ImplGlfw_EmscriptenOpenURL(const char* url) { if (url) emscripten::glfw3::OpenURL(url); } #else EM_JS(void, ImGui_ImplGlfw_EmscriptenOpenURL, (const char* url), { url = url ? UTF8ToString(url) : null; if (url) window.open(url, '_blank'); }); #endif #endif static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api) { ImGuiIO& io = ImGui::GetIO(); IMGUI_CHECKVERSION(); IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!"); //printf("GLFW_VERSION: %d.%d.%d (%d)", GLFW_VERSION_MAJOR, GLFW_VERSION_MINOR, GLFW_VERSION_REVISION, GLFW_VERSION_COMBINED); // Setup backend capabilities flags ImGui_ImplGlfw_Data* bd = IM_NEW(ImGui_ImplGlfw_Data)(); io.BackendPlatformUserData = (void*)bd; io.BackendPlatformName = "imgui_impl_glfw"; 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->Time = 0.0; ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO(); platform_io.Platform_SetClipboardTextFn = [](ImGuiContext*, const char* text) { glfwSetClipboardString(NULL, text); }; platform_io.Platform_GetClipboardTextFn = [](ImGuiContext*) { return glfwGetClipboardString(NULL); }; #ifdef __EMSCRIPTEN__ platform_io.Platform_OpenInShellFn = [](ImGuiContext*, const char* url) { ImGui_ImplGlfw_EmscriptenOpenURL(url); return true; }; #endif // Create mouse cursors // (By design, on X11 cursors are user configurable and some cursors may be missing. When a cursor doesn't exist, // GLFW will emit an error which will often be printed by the app, so we temporarily disable error reporting. // Missing cursors will return nullptr and our _UpdateMouseCursor() function will use the Arrow cursor instead.) GLFWerrorfun prev_error_callback = glfwSetErrorCallback(nullptr); bd->MouseCursors[ImGuiMouseCursor_Arrow] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); bd->MouseCursors[ImGuiMouseCursor_TextInput] = glfwCreateStandardCursor(GLFW_IBEAM_CURSOR); bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = glfwCreateStandardCursor(GLFW_VRESIZE_CURSOR); bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = glfwCreateStandardCursor(GLFW_HRESIZE_CURSOR); bd->MouseCursors[ImGuiMouseCursor_Hand] = glfwCreateStandardCursor(GLFW_HAND_CURSOR); #if GLFW_HAS_NEW_CURSORS bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_RESIZE_ALL_CURSOR); bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_RESIZE_NESW_CURSOR); bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_RESIZE_NWSE_CURSOR); bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_NOT_ALLOWED_CURSOR); #else bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); #endif glfwSetErrorCallback(prev_error_callback); #if GLFW_HAS_GETERROR && !defined(__EMSCRIPTEN__) // Eat errors (see #5908) (void)glfwGetError(nullptr); #endif // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any. if (install_callbacks) ImGui_ImplGlfw_InstallCallbacks(window); // Set platform dependent data in viewport ImGuiViewport* main_viewport = ImGui::GetMainViewport(); main_viewport->PlatformHandle = (void*)bd->Window; #ifdef _WIN32 main_viewport->PlatformHandleRaw = glfwGetWin32Window(bd->Window); #elif defined(__APPLE__) main_viewport->PlatformHandleRaw = (void*)glfwGetCocoaWindow(bd->Window); #else IM_UNUSED(main_viewport); #endif // Windows: register a WndProc hook so we can intercept some messages. #ifdef _WIN32 bd->PrevWndProc = (WNDPROC)::GetWindowLongPtrW((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC); IM_ASSERT(bd->PrevWndProc != nullptr); ::SetWindowLongPtrW((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC, (LONG_PTR)ImGui_ImplGlfw_WndProc); #endif bd->ClientApi = client_api; return true; } bool ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks) { return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_OpenGL); } bool ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks) { return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_Vulkan); } bool ImGui_ImplGlfw_InitForOther(GLFWwindow* window, bool install_callbacks) { return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_Unknown); } void ImGui_ImplGlfw_Shutdown() { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); IM_ASSERT(bd != nullptr && "No platform backend to shutdown, or already shutdown?"); ImGuiIO& io = ImGui::GetIO(); if (bd->InstalledCallbacks) ImGui_ImplGlfw_RestoreCallbacks(bd->Window); #ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3 if (bd->CanvasSelector) emscripten_set_wheel_callback(bd->CanvasSelector, nullptr, false, nullptr); #endif for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++) glfwDestroyCursor(bd->MouseCursors[cursor_n]); // Windows: restore our WndProc hook #ifdef _WIN32 ImGuiViewport* main_viewport = ImGui::GetMainViewport(); ::SetWindowLongPtrW((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC, (LONG_PTR)bd->PrevWndProc); bd->PrevWndProc = nullptr; #endif io.BackendPlatformName = nullptr; io.BackendPlatformUserData = nullptr; io.BackendFlags &= ~(ImGuiBackendFlags_HasMouseCursors | ImGuiBackendFlags_HasSetMousePos | ImGuiBackendFlags_HasGamepad); IM_DELETE(bd); } static void ImGui_ImplGlfw_UpdateMouseData() { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); ImGuiIO& io = ImGui::GetIO(); // (those braces are here to reduce diff with multi-viewports support in 'docking' branch) { GLFWwindow* window = bd->Window; #ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3 const bool is_window_focused = true; #else const bool is_window_focused = glfwGetWindowAttrib(window, GLFW_FOCUSED) != 0; #endif if (is_window_focused) { // (Optional) Set OS mouse position from Dear ImGui if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user) if (io.WantSetMousePos) glfwSetCursorPos(window, (double)io.MousePos.x, (double)io.MousePos.y); // (Optional) Fallback to provide mouse position when focused (ImGui_ImplGlfw_CursorPosCallback already provides this when hovered or captured) if (bd->MouseWindow == nullptr) { double mouse_x, mouse_y; glfwGetCursorPos(window, &mouse_x, &mouse_y); bd->LastValidMousePos = ImVec2((float)mouse_x, (float)mouse_y); io.AddMousePosEvent((float)mouse_x, (float)mouse_y); } } } } static void ImGui_ImplGlfw_UpdateMouseCursor() { ImGuiIO& io = ImGui::GetIO(); ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); if ((io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange) || glfwGetInputMode(bd->Window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED) return; ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor(); // (those braces are here to reduce diff with multi-viewports support in 'docking' branch) { GLFWwindow* window = bd->Window; if (imgui_cursor == ImGuiMouseCursor_None || io.MouseDrawCursor) { // Hide OS mouse cursor if imgui is drawing it or if it wants no cursor glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN); } else { // Show OS mouse cursor // FIXME-PLATFORM: Unfocused windows seems to fail changing the mouse cursor with GLFW 3.2, but 3.3 works here. glfwSetCursor(window, bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow]); glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL); } } } // Update gamepad inputs static inline float Saturate(float v) { return v < 0.0f ? 0.0f : v > 1.0f ? 1.0f : v; } static void ImGui_ImplGlfw_UpdateGamepads() { ImGuiIO& io = ImGui::GetIO(); if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0) // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs. return; io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad; #if GLFW_HAS_GAMEPAD_API && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3) GLFWgamepadstate gamepad; if (!glfwGetGamepadState(GLFW_JOYSTICK_1, &gamepad)) return; #define MAP_BUTTON(KEY_NO, BUTTON_NO, _UNUSED) do { io.AddKeyEvent(KEY_NO, gamepad.buttons[BUTTON_NO] != 0); } while (0) #define MAP_ANALOG(KEY_NO, AXIS_NO, _UNUSED, V0, V1) do { float v = gamepad.axes[AXIS_NO]; v = (v - V0) / (V1 - V0); io.AddKeyAnalogEvent(KEY_NO, v > 0.10f, Saturate(v)); } while (0) #else int axes_count = 0, buttons_count = 0; const float* axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axes_count); const unsigned char* buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_1, &buttons_count); if (axes_count == 0 || buttons_count == 0) return; #define MAP_BUTTON(KEY_NO, _UNUSED, BUTTON_NO) do { io.AddKeyEvent(KEY_NO, (buttons_count > BUTTON_NO && buttons[BUTTON_NO] == GLFW_PRESS)); } while (0) #define MAP_ANALOG(KEY_NO, _UNUSED, AXIS_NO, V0, V1) do { float v = (axes_count > AXIS_NO) ? axes[AXIS_NO] : V0; v = (v - V0) / (V1 - V0); io.AddKeyAnalogEvent(KEY_NO, v > 0.10f, Saturate(v)); } while (0) #endif io.BackendFlags |= ImGuiBackendFlags_HasGamepad; MAP_BUTTON(ImGuiKey_GamepadStart, GLFW_GAMEPAD_BUTTON_START, 7); MAP_BUTTON(ImGuiKey_GamepadBack, GLFW_GAMEPAD_BUTTON_BACK, 6); MAP_BUTTON(ImGuiKey_GamepadFaceLeft, GLFW_GAMEPAD_BUTTON_X, 2); // Xbox X, PS Square MAP_BUTTON(ImGuiKey_GamepadFaceRight, GLFW_GAMEPAD_BUTTON_B, 1); // Xbox B, PS Circle MAP_BUTTON(ImGuiKey_GamepadFaceUp, GLFW_GAMEPAD_BUTTON_Y, 3); // Xbox Y, PS Triangle MAP_BUTTON(ImGuiKey_GamepadFaceDown, GLFW_GAMEPAD_BUTTON_A, 0); // Xbox A, PS Cross MAP_BUTTON(ImGuiKey_GamepadDpadLeft, GLFW_GAMEPAD_BUTTON_DPAD_LEFT, 13); MAP_BUTTON(ImGuiKey_GamepadDpadRight, GLFW_GAMEPAD_BUTTON_DPAD_RIGHT, 11); MAP_BUTTON(ImGuiKey_GamepadDpadUp, GLFW_GAMEPAD_BUTTON_DPAD_UP, 10); MAP_BUTTON(ImGuiKey_GamepadDpadDown, GLFW_GAMEPAD_BUTTON_DPAD_DOWN, 12); MAP_BUTTON(ImGuiKey_GamepadL1, GLFW_GAMEPAD_BUTTON_LEFT_BUMPER, 4); MAP_BUTTON(ImGuiKey_GamepadR1, GLFW_GAMEPAD_BUTTON_RIGHT_BUMPER, 5); MAP_ANALOG(ImGuiKey_GamepadL2, GLFW_GAMEPAD_AXIS_LEFT_TRIGGER, 4, -0.75f, +1.0f); MAP_ANALOG(ImGuiKey_GamepadR2, GLFW_GAMEPAD_AXIS_RIGHT_TRIGGER, 5, -0.75f, +1.0f); MAP_BUTTON(ImGuiKey_GamepadL3, GLFW_GAMEPAD_BUTTON_LEFT_THUMB, 8); MAP_BUTTON(ImGuiKey_GamepadR3, GLFW_GAMEPAD_BUTTON_RIGHT_THUMB, 9); MAP_ANALOG(ImGuiKey_GamepadLStickLeft, GLFW_GAMEPAD_AXIS_LEFT_X, 0, -0.25f, -1.0f); MAP_ANALOG(ImGuiKey_GamepadLStickRight, GLFW_GAMEPAD_AXIS_LEFT_X, 0, +0.25f, +1.0f); MAP_ANALOG(ImGuiKey_GamepadLStickUp, GLFW_GAMEPAD_AXIS_LEFT_Y, 1, -0.25f, -1.0f); MAP_ANALOG(ImGuiKey_GamepadLStickDown, GLFW_GAMEPAD_AXIS_LEFT_Y, 1, +0.25f, +1.0f); MAP_ANALOG(ImGuiKey_GamepadRStickLeft, GLFW_GAMEPAD_AXIS_RIGHT_X, 2, -0.25f, -1.0f); MAP_ANALOG(ImGuiKey_GamepadRStickRight, GLFW_GAMEPAD_AXIS_RIGHT_X, 2, +0.25f, +1.0f); MAP_ANALOG(ImGuiKey_GamepadRStickUp, GLFW_GAMEPAD_AXIS_RIGHT_Y, 3, -0.25f, -1.0f); MAP_ANALOG(ImGuiKey_GamepadRStickDown, GLFW_GAMEPAD_AXIS_RIGHT_Y, 3, +0.25f, +1.0f); #undef MAP_BUTTON #undef MAP_ANALOG } void ImGui_ImplGlfw_NewFrame() { ImGuiIO& io = ImGui::GetIO(); ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplGlfw_InitForXXX()?"); // Setup display size (every frame to accommodate for window resizing) int w, h; int display_w, display_h; glfwGetWindowSize(bd->Window, &w, &h); glfwGetFramebufferSize(bd->Window, &display_w, &display_h); io.DisplaySize = ImVec2((float)w, (float)h); if (w > 0 && h > 0) io.DisplayFramebufferScale = ImVec2((float)display_w / (float)w, (float)display_h / (float)h); // Setup time step // (Accept glfwGetTime() not returning a monotonically increasing value. Seems to happens on disconnecting peripherals and probably on VMs and Emscripten, see #6491, #6189, #6114, #3644) double current_time = glfwGetTime(); if (current_time <= bd->Time) current_time = bd->Time + 0.00001f; io.DeltaTime = bd->Time > 0.0 ? (float)(current_time - bd->Time) : (float)(1.0f / 60.0f); bd->Time = current_time; ImGui_ImplGlfw_UpdateMouseData(); ImGui_ImplGlfw_UpdateMouseCursor(); // Update game controllers (if enabled and available) ImGui_ImplGlfw_UpdateGamepads(); } // GLFW doesn't provide a portable sleep function void ImGui_ImplGlfw_Sleep(int milliseconds) { #ifdef _WIN32 ::Sleep(milliseconds); #else usleep(milliseconds * 1000); #endif } #ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3 static EM_BOOL ImGui_ImplGlfw_OnCanvasSizeChange(int event_type, const EmscriptenUiEvent* event, void* user_data) { ImGui_ImplGlfw_Data* bd = (ImGui_ImplGlfw_Data*)user_data; double canvas_width, canvas_height; emscripten_get_element_css_size(bd->CanvasSelector, &canvas_width, &canvas_height); glfwSetWindowSize(bd->Window, (int)canvas_width, (int)canvas_height); return true; } static EM_BOOL ImGui_ImplEmscripten_FullscreenChangeCallback(int event_type, const EmscriptenFullscreenChangeEvent* event, void* user_data) { ImGui_ImplGlfw_Data* bd = (ImGui_ImplGlfw_Data*)user_data; double canvas_width, canvas_height; emscripten_get_element_css_size(bd->CanvasSelector, &canvas_width, &canvas_height); glfwSetWindowSize(bd->Window, (int)canvas_width, (int)canvas_height); return true; } // 'canvas_selector' is a CSS selector. The event listener is applied to the first element that matches the query. // STRING MUST PERSIST FOR THE APPLICATION DURATION. PLEASE USE A STRING LITERAL OR ENSURE POINTER WILL STAY VALID. void ImGui_ImplGlfw_InstallEmscriptenCallbacks(GLFWwindow*, const char* canvas_selector) { IM_ASSERT(canvas_selector != nullptr); ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplGlfw_InitForXXX()?"); bd->CanvasSelector = canvas_selector; emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, bd, false, ImGui_ImplGlfw_OnCanvasSizeChange); emscripten_set_fullscreenchange_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, bd, false, ImGui_ImplEmscripten_FullscreenChangeCallback); // Change the size of the GLFW window according to the size of the canvas ImGui_ImplGlfw_OnCanvasSizeChange(EMSCRIPTEN_EVENT_RESIZE, {}, bd); // Register Emscripten Wheel callback to workaround issue in Emscripten GLFW Emulation (#6096) // We intentionally do not check 'if (install_callbacks)' here, as some users may set it to false and call GLFW callback themselves. // FIXME: May break chaining in case user registered their own Emscripten callback? emscripten_set_wheel_callback(bd->CanvasSelector, nullptr, false, ImGui_ImplEmscripten_WheelCallback); } #elif defined(EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3) // When using --use-port=contrib.glfw3 for the GLFW implementation, you can override the behavior of this call // by invoking emscripten_glfw_make_canvas_resizable afterward. // See https://github.com/pongasoft/emscripten-glfw/blob/master/docs/Usage.md#how-to-make-the-canvas-resizable-by-the-user for an explanation void ImGui_ImplGlfw_InstallEmscriptenCallbacks(GLFWwindow* window, const char* canvas_selector) { GLFWwindow* w = (GLFWwindow*)(EM_ASM_INT({ return Module.glfwGetWindow(UTF8ToString($0)); }, canvas_selector)); IM_ASSERT(window == w); // Sanity check IM_UNUSED(w); emscripten_glfw_make_canvas_resizable(window, "window", nullptr); } #endif // #ifdef EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3 //----------------------------------------------------------------------------- #if defined(__clang__) #pragma clang diagnostic pop #endif #endif // #ifndef IMGUI_DISABLE