diff --git a/backends/imgui_impl_allegro5.cpp b/backends/imgui_impl_allegro5.cpp index 6b1e81f7a..6a7af437f 100644 --- a/backends/imgui_impl_allegro5.cpp +++ b/backends/imgui_impl_allegro5.cpp @@ -16,6 +16,7 @@ // CHANGELOG // (minor and older changes stripped away, please see git history for details) +// 2021-08-17: Calling io.AddFocusEvent() on ALLEGRO_EVENT_DISPLAY_SWITCH_OUT/ALLEGRO_EVENT_DISPLAY_SWITCH_IN events. // 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX). // 2021-05-19: Renderer: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement) // 2021-02-18: Change blending equation to preserve alpha in output buffer. @@ -390,6 +391,19 @@ bool ImGui_ImplAllegro5_ProcessEvent(ALLEGRO_EVENT* ev) if (ev->keyboard.display == bd->Display) io.KeysDown[ev->keyboard.keycode] = (ev->type == ALLEGRO_EVENT_KEY_DOWN); return true; + case ALLEGRO_EVENT_DISPLAY_SWITCH_OUT: + if (ev->display.source == bd->Display) + io.AddFocusEvent(false); + return true; + case ALLEGRO_EVENT_DISPLAY_SWITCH_IN: + if (ev->display.source == bd->Display) + { + io.AddFocusEvent(true); +#if defined(ALLEGRO_UNSTABLE) + al_clear_keyboard_state(bd->Display); +#endif + } + return true; } return false; } diff --git a/backends/imgui_impl_glfw.cpp b/backends/imgui_impl_glfw.cpp index dfc81e09f..8cac72418 100644 --- a/backends/imgui_impl_glfw.cpp +++ b/backends/imgui_impl_glfw.cpp @@ -16,7 +16,8 @@ // CHANGELOG // (minor and older changes stripped away, please see git history for details) -// 2021-07-29: *BREAKING CHANGE*: Inputs: MousePos is correctly reported when the host platform window is hovered but not focused (using glfwSetCursorEnterCallback). If you called ImGui_ImplGlfw_InitXXX() with install_callbacks = false, you MUST install the glfwSetCursorEnterCallback() callback and the forward to the backend via ImGui_ImplGlfw_CursorEnterCallback(). +// 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). @@ -80,6 +81,7 @@ struct ImGui_ImplGlfw_Data bool InstalledCallbacks; // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any. + GLFWwindowfocusfun PrevUserCallbackWindowFocus; GLFWcursorenterfun PrevUserCallbackCursorEnter; GLFWmousebuttonfun PrevUserCallbackMousebutton; GLFWscrollfun PrevUserCallbackScroll; @@ -160,11 +162,22 @@ void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key, int scancode, int a #endif } +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_CursorEnterCallback(GLFWwindow* window, int entered) { ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); - if (bd->PrevUserCallbackCursorEnter != NULL) + if (bd->PrevUserCallbackCursorEnter != NULL && window == bd->Window) bd->PrevUserCallbackCursorEnter(window, entered); + if (entered) bd->MouseWindow = window; if (!entered && bd->MouseWindow == window) @@ -256,6 +269,7 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw glfwSetErrorCallback(prev_error_callback); // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any. + bd->PrevUserCallbackWindowFocus = NULL; bd->PrevUserCallbackMousebutton = NULL; bd->PrevUserCallbackScroll = NULL; bd->PrevUserCallbackKey = NULL; @@ -264,6 +278,7 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw if (install_callbacks) { bd->InstalledCallbacks = true; + bd->PrevUserCallbackWindowFocus = glfwSetWindowFocusCallback(window, ImGui_ImplGlfw_WindowFocusCallback); bd->PrevUserCallbackCursorEnter = glfwSetCursorEnterCallback(window, ImGui_ImplGlfw_CursorEnterCallback); bd->PrevUserCallbackMousebutton = glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback); bd->PrevUserCallbackScroll = glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback); @@ -298,6 +313,7 @@ void ImGui_ImplGlfw_Shutdown() if (bd->InstalledCallbacks) { + glfwSetWindowFocusCallback(bd->Window, bd->PrevUserCallbackWindowFocus); glfwSetCursorEnterCallback(bd->Window, bd->PrevUserCallbackCursorEnter); glfwSetMouseButtonCallback(bd->Window, bd->PrevUserCallbackMousebutton); glfwSetScrollCallback(bd->Window, bd->PrevUserCallbackScroll); diff --git a/backends/imgui_impl_glfw.h b/backends/imgui_impl_glfw.h index 4d718f0ac..5e1fb06df 100644 --- a/backends/imgui_impl_glfw.h +++ b/backends/imgui_impl_glfw.h @@ -32,6 +32,7 @@ IMGUI_IMPL_API void ImGui_ImplGlfw_NewFrame(); // GLFW callbacks // - When calling Init with 'install_callbacks=true': GLFW callbacks will be installed for you. They will call user's previously installed callbacks, if any. // - When calling Init with 'install_callbacks=false': GLFW callbacks won't be installed. You will need to call those function yourself from your own GLFW callbacks. +IMGUI_IMPL_API void ImGui_ImplGlfw_WindowFocusCallback(GLFWwindow* window, int focused); IMGUI_IMPL_API void ImGui_ImplGlfw_CursorEnterCallback(GLFWwindow* window, int entered); IMGUI_IMPL_API void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods); IMGUI_IMPL_API void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset); diff --git a/backends/imgui_impl_osx.mm b/backends/imgui_impl_osx.mm index 2fcb71241..1eb79d99c 100644 --- a/backends/imgui_impl_osx.mm +++ b/backends/imgui_impl_osx.mm @@ -19,6 +19,7 @@ // CHANGELOG // (minor and older changes stripped away, please see git history for details) +// 2021-08-17: Calling io.AddFocusEvent() on NSApplicationDidBecomeActiveNotification/NSApplicationDidResignActiveNotification events. // 2021-06-23: Inputs: Added a fix for shortcuts using CTRL key instead of CMD key. // 2021-04-19: Inputs: Added a fix for keys remaining stuck in pressed state when CMD-tabbing into different application. // 2021-01-27: Inputs: Added a fix for mouse position not being reported when mouse buttons other than left one are down. @@ -60,14 +61,24 @@ static void resetKeys() @interface ImFocusObserver : NSObject +- (void)onApplicationBecomeActive:(NSNotification*)aNotification; - (void)onApplicationBecomeInactive:(NSNotification*)aNotification; @end @implementation ImFocusObserver +- (void)onApplicationBecomeActive:(NSNotification*)aNotification +{ + ImGuiIO& io = ImGui::GetIO(); + io.AddFocusEvent(true); +} + - (void)onApplicationBecomeInactive:(NSNotification*)aNotification { + ImGuiIO& io = ImGui::GetIO(); + io.AddFocusEvent(false); + // Unfocused applications do not receive input events, therefore we must manually // release any pressed keys when application loses focus, otherwise they would remain // stuck in a pressed state. https://github.com/ocornut/imgui/issues/3832 @@ -155,6 +166,10 @@ bool ImGui_ImplOSX_Init() }; g_FocusObserver = [[ImFocusObserver alloc] init]; + [[NSNotificationCenter defaultCenter] addObserver:g_FocusObserver + selector:@selector(onApplicationBecomeActive:) + name:NSApplicationDidBecomeActiveNotification + object:nil]; [[NSNotificationCenter defaultCenter] addObserver:g_FocusObserver selector:@selector(onApplicationBecomeInactive:) name:NSApplicationDidResignActiveNotification diff --git a/backends/imgui_impl_sdl.cpp b/backends/imgui_impl_sdl.cpp index 09e6acb6c..096485b45 100644 --- a/backends/imgui_impl_sdl.cpp +++ b/backends/imgui_impl_sdl.cpp @@ -18,6 +18,7 @@ // CHANGELOG // (minor and older changes stripped away, please see git history for details) +// 2021-08-17: Calling io.AddFocusEvent() on SDL_WINDOWEVENT_FOCUS_GAINED/SDL_WINDOWEVENT_FOCUS_LOST. // 2021-07-29: Inputs: MousePos is correctly reported when the host platform window is hovered but not focused (using SDL_GetMouseFocus() + SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, requires SDL 2.0.5+) // 2021-06-29: *BREAKING CHANGE* Removed 'SDL_Window* window' parameter to ImGui_ImplSDL2_NewFrame() which was unnecessary. // 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX). @@ -148,6 +149,14 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event) #endif return true; } + case SDL_WINDOWEVENT: + { + if (event->window.event == SDL_WINDOWEVENT_FOCUS_GAINED) + io.AddFocusEvent(true); + else if (event->window.event == SDL_WINDOWEVENT_FOCUS_LOST) + io.AddFocusEvent(false); + return true; + } } return false; } diff --git a/backends/imgui_impl_win32.cpp b/backends/imgui_impl_win32.cpp index 984171a58..740b17650 100644 --- a/backends/imgui_impl_win32.cpp +++ b/backends/imgui_impl_win32.cpp @@ -33,7 +33,8 @@ typedef DWORD (WINAPI *PFN_XInputGetState)(DWORD, XINPUT_STATE*); // CHANGELOG // (minor and older changes stripped away, please see git history for details) -// 2021-08-02: Inputs: Fixed keyboard modifiers being reported when host window doesn't have focus. +// 2021-08-17: Calling io.AddFocusEvent() on WM_SETFOCUS/WM_KILLFOCUS messages. +// 2021-08-02: Inputs: Fixed keyboard modifiers being reported when host windo doesn't have focus. // 2021-07-29: Inputs: MousePos is correctly reported when the host platform window is hovered but not focused (using TrackMouseEvent() to receive WM_MOUSELEAVE events). // 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX). // 2021-06-08: Fixed ImGui_ImplWin32_EnableDpiAwareness() and ImGui_ImplWin32_GetDpiScaleForMonitor() to handle Windows 8.1/10 features without a manifest (per-monitor DPI, and properly calls SetProcessDpiAwareness() on 8.1). @@ -431,9 +432,9 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA io.KeyAlt = down; return 0; } + case WM_SETFOCUS: case WM_KILLFOCUS: - memset(io.KeysDown, 0, sizeof(io.KeysDown)); - io.KeyCtrl = io.KeyShift = io.KeyAlt = io.KeySuper = false; + io.AddFocusEvent(msg == WM_SETFOCUS); return 0; case WM_CHAR: // You can also use ToAscii()+GetKeyboardState() to retrieve characters. diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt index 2a6fe62b3..8cf300014 100644 --- a/docs/CHANGELOG.txt +++ b/docs/CHANGELOG.txt @@ -40,10 +40,13 @@ Breaking Changes: - Commented out redirecting functions/enums names that were marked obsolete in 1.67 and 1.69 (March 2019): - ImGui::GetOverlayDrawList() -> use ImGui::GetForegroundDrawList() - ImFont::GlyphRangesBuilder -> use ImFontGlyphRangesBuilder -- Backends: GLFW: backend now needs to use glfwSetCursorEnterCallback(). (#3751, #4377, #2445) +- Backends: GLFW: backend now uses glfwSetCursorEnterCallback(). (#3751, #4377, #2445) +- Backends: GLFW: backend now uses glfwSetWindowFocusCallback(). (#4388) [@thedmd] - If calling ImGui_ImplGlfw_InitXXX with install_callbacks=true: this is already done for you. - - If calling ImGui_ImplGlfw_InitXXX with install_callbacks=false: you WILL NEED to register the GLFW callback - with glfwSetCursorEnterCallback(), and forward events to the backend via ImGui_ImplGlfw_CursorEnterCallback(). + - If calling ImGui_ImplGlfw_InitXXX with install_callbacks=false: you WILL NEED to register the GLFW callbacks + and forward them to the backend: + - Register glfwSetCursorEnterCallback, forward events to ImGui_ImplGlfw_CursorEnterCallback(). + - Register glfwSetWindowFocusCallback, forward events to ImGui_ImplGlfw_WindowFocusCallback(). - Backends: SDL2: removed unnecessary SDL_Window* parameter from ImGui_ImplSDL2_NewFrame(). (#3244) [@funchal] Kept inline redirection function (will obsolete). - Backends: SDL2: backend needs to set 'SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1")' in order to @@ -56,6 +59,8 @@ Breaking Changes: return value of ButtonBehavior() rather than (HoveredId == id). Other Changes: +- IO: Added io.AddFocusEvent() api for backend to tell when host window has gained/lost focus. (#4388) [@thedmd] + If you use a custom backend, consider adding support for this! - Windows: ImGuiWindowFlags_UnsavedDocument/ImGuiTabItmeFlags_UnsavedDocument display a dot instead of a '*' so it is independent from font style. When in a tab, the dot is displayed at the same position as the close button. Added extra comments to clarify the purpose of this flag in the context of docked windows. @@ -101,6 +106,9 @@ Other Changes: - Backends: Win32: IME functions are disabled by default for non-Visual Studio compilers (MinGW etc.). Enable with '#define IMGUI_ENABLE_WIN32_DEFAULT_IME_FUNCTIONS' for those compilers. Undo change from 1.82. (#2590, #738, #4185, #4301) - Backends: Win32: Mouse position is correctly reported when the host window is hovered but not focused. (#2445, #2696, #3751, #4377) +- Backends: Win32, SDL2, GLFW, OSX, Allegro: now calling io.AddFocusEvent() on focus gain/loss. (#4388) [@thedmd] + This allow us to ignore certain inputs on focus loss (previously relied on mouse loss but backends are now + reporting mouse even when host window is unfocused, as per #2445, #2696, #3751, #4377) - Backends: Fixed keyboard modifiers being reported when host window doesn't have focus. (#2622) - Backends: GLFW: Mouse position is correctly reported when the host window is hovered but not focused. (#3751, #4377, #2445) (backend now uses glfwSetCursorEnterCallback(). If you called ImGui_ImplGlfw_InitXXX with install_callbacks=false, you will diff --git a/imgui.cpp b/imgui.cpp index b5900ee7e..0bdc59379 100644 --- a/imgui.cpp +++ b/imgui.cpp @@ -1180,6 +1180,22 @@ void ImGuiIO::ClearInputCharacters() InputQueueCharacters.resize(0); } +void ImGuiIO::AddFocusEvent(bool focused) +{ + if (focused) + return; + + // Clear buttons state when focus is lost + // (this is useful so e.g. releasing Alt after focus loss on Alt-Tab doesn't trigger the Alt menu toggle) + memset(KeysDown, 0, sizeof(KeysDown)); + for (int n = 0; n < IM_ARRAYSIZE(KeysDownDuration); n++) + KeysDownDuration[n] = KeysDownDurationPrev[n] = -1.0f; + KeyCtrl = KeyShift = KeyAlt = KeySuper = false; + KeyMods = KeyModsPrev = ImGuiKeyModFlags_None; + for (int n = 0; n < IM_ARRAYSIZE(NavInputsDownDuration); n++) + NavInputsDownDuration[n] = NavInputsDownDurationPrev[n] = -1.0f; +} + //----------------------------------------------------------------------------- // [SECTION] MISC HELPERS/UTILITIES (Geometry functions) //----------------------------------------------------------------------------- @@ -9694,8 +9710,9 @@ static void ImGui::NavUpdateWindowing() g.NavWindowingToggleLayer = false; // Apply layer toggle on release - // FIXME: We lack an explicit IO variable for "is the platform window focused", so compare mouse validity to detect the common case of backend clearing releases all keys on ALT-TAB - if (!io.KeyAlt && g.NavWindowingToggleLayer) + // Important: we don't assume that Alt was previously held in order to handle loss of focus when backend calls io.AddFocusEvent(false) + // Important: as before version <18314 we lacked an explicit IO event for focus gain/loss, we also compare mouse validity to detect old backends clearing mouse pos on focus loss. + if (!(io.KeyMods & ImGuiKeyModFlags_Alt) && (io.KeyModsPrev & ImGuiKeyModFlags_Alt) && g.NavWindowingToggleLayer) if (g.ActiveId == 0 || g.ActiveIdAllowOverlap) if (IsMousePosValid(&io.MousePos) == IsMousePosValid(&io.MousePosPrev)) apply_toggle_layer = true; diff --git a/imgui.h b/imgui.h index 287227c3e..30e31094c 100644 --- a/imgui.h +++ b/imgui.h @@ -61,7 +61,7 @@ Index of this file: // Version // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY99 then bounce up to XYY00, XYY01 etc. when release tagging happens) #define IMGUI_VERSION "1.84 WIP" -#define IMGUI_VERSION_NUM 18313 +#define IMGUI_VERSION_NUM 18314 #define IMGUI_CHECKVERSION() ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx)) #define IMGUI_HAS_TABLE @@ -1868,6 +1868,7 @@ struct ImGuiIO IMGUI_API void AddInputCharacterUTF16(ImWchar16 c); // Queue new character input from an UTF-16 character, it can be a surrogate IMGUI_API void AddInputCharactersUTF8(const char* str); // Queue new characters input from an UTF-8 string IMGUI_API void ClearInputCharacters(); // Clear the text input buffer manually + IMGUI_API void AddFocusEvent(bool focused); // Notifies Dear ImGui when hosting platform windows lose or gain input focus //------------------------------------------------------------------ // Output - Updated by NewFrame() or EndFrame()/Render()