// 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+) // Implemented features: // [X] Platform: Clipboard support. // [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. // If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp. // Read online: https://github.com/ocornut/imgui/tree/master/docs // CHANGELOG // (minor and older changes stripped away, please see git history for details) // 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" #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 #if __has_warning("-Wzero-as-null-pointer-constant") #pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant" #endif #endif // GLFW #include #ifdef _WIN32 #undef APIENTRY #define GLFW_EXPOSE_NATIVE_WIN32 #include // for glfwGetWin32Window #endif #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_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 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_GET_KEY_NAME (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwGetKeyName() // GLFW data enum GlfwClientApi { GlfwClientApi_Unknown, GlfwClientApi_OpenGL, GlfwClientApi_Vulkan }; struct ImGui_ImplGlfw_Data { GLFWwindow* Window; GlfwClientApi ClientApi; double Time; GLFWwindow* MouseWindow; bool MouseJustPressed[ImGuiMouseButton_COUNT]; GLFWcursor* MouseCursors[ImGuiMouseCursor_COUNT]; bool InstalledCallbacks; // 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; ImGui_ImplGlfw_Data() { memset(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 : NULL; } // Functions static const char* ImGui_ImplGlfw_GetClipboardText(void* user_data) { return glfwGetClipboardString((GLFWwindow*)user_data); } static void ImGui_ImplGlfw_SetClipboardText(void* user_data, const char* text) { glfwSetClipboardString((GLFWwindow*)user_data, text); } 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_LeftControl; 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_RightControl; 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; default: return ImGuiKey_None; } } void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); if (bd->PrevUserCallbackMousebutton != NULL && window == bd->Window) bd->PrevUserCallbackMousebutton(window, button, action, mods); if (action == GLFW_PRESS && button >= 0 && button < IM_ARRAYSIZE(bd->MouseJustPressed)) bd->MouseJustPressed[button] = true; } void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); if (bd->PrevUserCallbackScroll != NULL && window == bd->Window) bd->PrevUserCallbackScroll(window, xoffset, yoffset); ImGuiIO& io = ImGui::GetIO(); io.MouseWheelH += (float)xoffset; io.MouseWheel += (float)yoffset; } static int ImGui_ImplGlfw_TranslateUntranslatedKey(int key, int scancode) { #if GLFW_HAS_GET_KEY_NAME // 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. const char* key_name = glfwGetKeyName(key, scancode); 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 (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); #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 != NULL && window == bd->Window) bd->PrevUserCallbackKey(window, keycode, scancode, action, mods); if (action != GLFW_PRESS && action != GLFW_RELEASE) return; 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 != NULL && window == bd->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 != NULL && window == bd->Window) bd->PrevUserCallbackCursorPos(window, x, y); ImGuiIO& io = ImGui::GetIO(); io.MousePos = ImVec2((float)x, (float)y); } void ImGui_ImplGlfw_CursorEnterCallback(GLFWwindow* window, int entered) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); if (bd->PrevUserCallbackCursorEnter != NULL && window == bd->Window) bd->PrevUserCallbackCursorEnter(window, entered); ImGuiIO& io = ImGui::GetIO(); if (entered) bd->MouseWindow = window; if (!entered && bd->MouseWindow == window) { bd->MouseWindow = NULL; io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX); } } void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); if (bd->PrevUserCallbackChar != NULL && window == bd->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. } static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api) { ImGuiIO& io = ImGui::GetIO(); IM_ASSERT(io.BackendPlatformUserData == NULL && "Already initialized a platform backend!"); // 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; io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText; io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText; io.ClipboardUserData = bd->Window; // Set platform dependent data in viewport #if defined(_WIN32) ImGui::GetMainViewport()->PlatformHandleRaw = (void*)glfwGetWin32Window(bd->Window); #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 NULL and our _UpdateMouseCursor() function will use the Arrow cursor instead.) GLFWerrorfun prev_error_callback = glfwSetErrorCallback(NULL); 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); // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any. bd->PrevUserCallbackWindowFocus = NULL; bd->PrevUserCallbackCursorEnter = NULL; bd->PrevUserCallbackMousebutton = NULL; bd->PrevUserCallbackScroll = NULL; bd->PrevUserCallbackKey = NULL; bd->PrevUserCallbackChar = NULL; bd->PrevUserCallbackMonitor = NULL; if (install_callbacks) { bd->InstalledCallbacks = true; 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->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 != NULL && "No platform backend to shutdown, or already shutdown?"); ImGuiIO& io = ImGui::GetIO(); if (bd->InstalledCallbacks) { glfwSetWindowFocusCallback(bd->Window, bd->PrevUserCallbackWindowFocus); glfwSetCursorEnterCallback(bd->Window, bd->PrevUserCallbackCursorEnter); glfwSetCursorPosCallback(bd->Window, bd->PrevUserCallbackCursorPos); glfwSetMouseButtonCallback(bd->Window, bd->PrevUserCallbackMousebutton); glfwSetScrollCallback(bd->Window, bd->PrevUserCallbackScroll); glfwSetKeyCallback(bd->Window, bd->PrevUserCallbackKey); glfwSetCharCallback(bd->Window, bd->PrevUserCallbackChar); glfwSetMonitorCallback(bd->PrevUserCallbackMonitor); } for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++) glfwDestroyCursor(bd->MouseCursors[cursor_n]); io.BackendPlatformName = NULL; io.BackendPlatformUserData = NULL; IM_DELETE(bd); } static void ImGui_ImplGlfw_UpdateMouseData() { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); ImGuiIO& io = ImGui::GetIO(); #ifdef __EMSCRIPTEN__ const bool is_app_focused = true; #else const bool is_app_focused = glfwGetWindowAttrib(bd->Window, GLFW_FOCUSED) != 0; #endif if (is_app_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(bd->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 (is_app_focused && bd->MouseWindow == NULL) { double mouse_x, mouse_y; glfwGetCursorPos(bd->Window, &mouse_x, &mouse_y); io.MousePos = ImVec2((float)mouse_x, (float)mouse_y); } } // Update buttons for (int i = 0; i < IM_ARRAYSIZE(io.MouseDown); i++) { io.MouseDown[i] = bd->MouseJustPressed[i] || glfwGetMouseButton(bd->Window, i) != 0; bd->MouseJustPressed[i] = false; } } 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(); if (imgui_cursor == ImGuiMouseCursor_None || io.MouseDrawCursor) { // Hide OS mouse cursor if imgui is drawing it or if it wants no cursor glfwSetInputMode(bd->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(bd->Window, bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow]); glfwSetInputMode(bd->Window, GLFW_CURSOR, GLFW_CURSOR_NORMAL); } } static void ImGui_ImplGlfw_UpdateGamepads() { ImGuiIO& io = ImGui::GetIO(); memset(io.NavInputs, 0, sizeof(io.NavInputs)); if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0) return; // Update gamepad inputs #define MAP_BUTTON(NAV_NO, BUTTON_NO) do { if (buttons_count > BUTTON_NO && buttons[BUTTON_NO] == GLFW_PRESS) io.NavInputs[NAV_NO] = 1.0f; } while (0) #define MAP_ANALOG(NAV_NO, AXIS_NO, V0, V1) do { float v = (axes_count > AXIS_NO) ? axes[AXIS_NO] : V0; v = (v - V0) / (V1 - V0); if (v > 1.0f) v = 1.0f; if (io.NavInputs[NAV_NO] < v) io.NavInputs[NAV_NO] = v; } while (0) 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); MAP_BUTTON(ImGuiNavInput_Activate, 0); // Cross / A MAP_BUTTON(ImGuiNavInput_Cancel, 1); // Circle / B MAP_BUTTON(ImGuiNavInput_Menu, 2); // Square / X MAP_BUTTON(ImGuiNavInput_Input, 3); // Triangle / Y MAP_BUTTON(ImGuiNavInput_DpadLeft, 13); // D-Pad Left MAP_BUTTON(ImGuiNavInput_DpadRight, 11); // D-Pad Right MAP_BUTTON(ImGuiNavInput_DpadUp, 10); // D-Pad Up MAP_BUTTON(ImGuiNavInput_DpadDown, 12); // D-Pad Down MAP_BUTTON(ImGuiNavInput_FocusPrev, 4); // L1 / LB MAP_BUTTON(ImGuiNavInput_FocusNext, 5); // R1 / RB MAP_BUTTON(ImGuiNavInput_TweakSlow, 4); // L1 / LB MAP_BUTTON(ImGuiNavInput_TweakFast, 5); // R1 / RB MAP_ANALOG(ImGuiNavInput_LStickLeft, 0, -0.3f, -0.9f); MAP_ANALOG(ImGuiNavInput_LStickRight,0, +0.3f, +0.9f); MAP_ANALOG(ImGuiNavInput_LStickUp, 1, +0.3f, +0.9f); MAP_ANALOG(ImGuiNavInput_LStickDown, 1, -0.3f, -0.9f); #undef MAP_BUTTON #undef MAP_ANALOG if (axes_count > 0 && buttons_count > 0) io.BackendFlags |= ImGuiBackendFlags_HasGamepad; else io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad; } static void ImGui_ImplGlfw_UpdateKeyModifiers() { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); ImGuiIO& io = ImGui::GetIO(); ImGuiKeyModFlags key_mods = (((glfwGetKey(bd->Window, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS) || (glfwGetKey(bd->Window, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS)) ? ImGuiKeyModFlags_Ctrl : 0) | (((glfwGetKey(bd->Window, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS) || (glfwGetKey(bd->Window, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS)) ? ImGuiKeyModFlags_Shift : 0) | (((glfwGetKey(bd->Window, GLFW_KEY_LEFT_ALT) == GLFW_PRESS) || (glfwGetKey(bd->Window, GLFW_KEY_RIGHT_ALT) == GLFW_PRESS)) ? ImGuiKeyModFlags_Alt : 0) | (((glfwGetKey(bd->Window, GLFW_KEY_LEFT_SUPER) == GLFW_PRESS) || (glfwGetKey(bd->Window, GLFW_KEY_RIGHT_SUPER) == GLFW_PRESS)) ? ImGuiKeyModFlags_Super : 0); io.AddKeyModsEvent(key_mods); } void ImGui_ImplGlfw_NewFrame() { ImGuiIO& io = ImGui::GetIO(); ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); IM_ASSERT(bd != NULL && "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 double current_time = glfwGetTime(); io.DeltaTime = bd->Time > 0.0 ? (float)(current_time - bd->Time) : (float)(1.0f / 60.0f); bd->Time = current_time; ImGui_ImplGlfw_UpdateKeyModifiers(); ImGui_ImplGlfw_UpdateMouseData(); ImGui_ImplGlfw_UpdateMouseCursor(); // Update game controllers (if enabled and available) ImGui_ImplGlfw_UpdateGamepads(); } #if defined(__clang__) #pragma clang diagnostic pop #endif