diff options
Diffstat (limited to 'imgui-1.92.1/backends/imgui_impl_win32.cpp')
| -rw-r--r-- | imgui-1.92.1/backends/imgui_impl_win32.cpp | 969 |
1 files changed, 0 insertions, 969 deletions
diff --git a/imgui-1.92.1/backends/imgui_impl_win32.cpp b/imgui-1.92.1/backends/imgui_impl_win32.cpp deleted file mode 100644 index d7206b9..0000000 --- a/imgui-1.92.1/backends/imgui_impl_win32.cpp +++ /dev/null @@ -1,969 +0,0 @@ -// dear imgui: Platform Backend for Windows (standard windows API for 32-bits AND 64-bits applications) -// This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..) - -// Implemented features: -// [X] Platform: Clipboard support (for Win32 this is actually part of core dear imgui) -// [X] Platform: Mouse support. Can discriminate Mouse/TouchScreen/Pen. -// [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 VK_* values are obsolete since 1.87 and not supported since 1.91.5] -// [X] Platform: Gamepad support. -// [X] Platform: Mouse cursor shape and visibility (ImGuiBackendFlags_HasMouseCursors). Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'. - -// 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 - -// Configuration flags to add in your imconfig file: -//#define IMGUI_IMPL_WIN32_DISABLE_GAMEPAD // Disable gamepad support. This was meaningful before <1.81 but we now load XInput dynamically so the option is now less relevant. - -// CHANGELOG -// (minor and older changes stripped away, please see git history for details) -// 2025-04-30: Inputs: Fixed an issue where externally losing mouse capture (due to e.g. focus loss) would fail to claim it again the next subsequent click. (#8594) -// 2025-03-10: When dealing with OEM keys, use scancodes instead of translated keycodes to choose ImGuiKey values. (#7136, #7201, #7206, #7306, #7670, #7672, #8468) -// 2025-02-18: Added ImGuiMouseCursor_Wait and ImGuiMouseCursor_Progress mouse cursor support. -// 2024-07-08: Inputs: Fixed ImGuiMod_Super being mapped to VK_APPS instead of VK_LWIN||VK_RWIN. (#7768) -// 2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys, app back/forward keys. -// 2023-09-25: Inputs: Synthesize key-down event on key-up for VK_SNAPSHOT / ImGuiKey_PrintScreen as Windows doesn't emit it (same behavior as GLFW/SDL). -// 2023-09-07: Inputs: Added support for keyboard codepage conversion for when application is compiled in MBCS mode and using a non-Unicode window. -// 2023-04-19: Added ImGui_ImplWin32_InitForOpenGL() to facilitate combining raw Win32/Winapi with OpenGL. (#3218) -// 2023-04-04: Inputs: Added support for io.AddMouseSourceEvent() to discriminate ImGuiMouseSource_Mouse/ImGuiMouseSource_TouchScreen/ImGuiMouseSource_Pen. (#2702) -// 2023-02-15: Inputs: Use WM_NCMOUSEMOVE / WM_NCMOUSELEAVE to track mouse position over non-client area (e.g. OS decorations) when app is not focused. (#6045, #6162) -// 2023-02-02: Inputs: Flipping WM_MOUSEHWHEEL (horizontal mouse-wheel) value to match other backends and offer consistent horizontal scrolling direction. (#4019, #6096, #1463) -// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11. -// 2022-09-28: Inputs: Convert WM_CHAR values with MultiByteToWideChar() when window class was registered as MBCS (not Unicode). -// 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. -// 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 a key event (not in NewFrame) to fix input queue with very low framerates. -// 2022-01-12: Inputs: Update mouse inputs using WM_MOUSEMOVE/WM_MOUSELEAVE + fallback to provide it when focused but not hovered/captured. More standard and will allow us to pass it to future input queue API. -// 2022-01-12: Inputs: Maintain our own copy of MouseButtonsDown mask instead of using ImGui::IsAnyMouseDown() which will be obsoleted. -// 2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range. -// 2021-12-16: Inputs: Fill VK_LCONTROL/VK_RCONTROL/VK_LSHIFT/VK_RSHIFT/VK_LMENU/VK_RMENU for completeness. -// 2021-08-17: Calling io.AddFocusEvent() on WM_SETFOCUS/WM_KILLFOCUS messages. -// 2021-08-02: Inputs: Fixed keyboard modifiers being reported when host window 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). -// 2021-03-23: Inputs: Clearing keyboard down array when losing focus (WM_KILLFOCUS). -// 2021-02-18: Added ImGui_ImplWin32_EnableAlphaCompositing(). Non Visual Studio users will need to link with dwmapi.lib (MinGW/gcc: use -ldwmapi). -// 2021-02-17: Fixed ImGui_ImplWin32_EnableDpiAwareness() attempting to get SetProcessDpiAwareness from shcore.dll on Windows 8 whereas it is only supported on Windows 8.1. -// 2021-01-25: Inputs: Dynamically loading XInput DLL. -// 2020-12-04: Misc: Fixed setting of io.DisplaySize to invalid/uninitialized data when after hwnd has been closed. -// 2020-03-03: Inputs: Calling AddInputCharacterUTF16() to support surrogate pairs leading to codepoint >= 0x10000 (for more complete CJK inputs) -// 2020-02-17: Added ImGui_ImplWin32_EnableDpiAwareness(), ImGui_ImplWin32_GetDpiScaleForHwnd(), ImGui_ImplWin32_GetDpiScaleForMonitor() helper functions. -// 2020-01-14: Inputs: Added support for #define IMGUI_IMPL_WIN32_DISABLE_GAMEPAD/IMGUI_IMPL_WIN32_DISABLE_LINKING_XINPUT. -// 2019-12-05: Inputs: Added support for ImGuiMouseCursor_NotAllowed mouse cursor. -// 2019-05-11: Inputs: Don't filter value from WM_CHAR before calling AddInputCharacter(). -// 2019-01-17: Misc: Using GetForegroundWindow()+IsChild() instead of GetActiveWindow() to be compatible with windows created in a different thread or parent. -// 2019-01-17: Inputs: Added support for mouse buttons 4 and 5 via WM_XBUTTON* messages. -// 2019-01-15: Inputs: Added support for XInput gamepads (if ImGuiConfigFlags_NavEnableGamepad is set by user application). -// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window. -// 2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor. -// 2018-06-10: Inputs: Fixed handling of mouse wheel messages to support fine position messages (typically sent by track-pads). -// 2018-06-08: Misc: Extracted imgui_impl_win32.cpp/.h away from the old combined DX9/DX10/DX11/DX12 examples. -// 2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors and ImGuiBackendFlags_HasSetMousePos flags + honor ImGuiConfigFlags_NoMouseCursorChange flag. -// 2018-02-20: Inputs: Added support for mouse cursors (ImGui::GetMouseCursor() value and WM_SETCURSOR message handling). -// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space. -// 2018-02-06: Inputs: Honoring the io.WantSetMousePos by repositioning the mouse (when using navigation and ImGuiConfigFlags_NavMoveMouse is set). -// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves. -// 2018-01-20: Inputs: Added Horizontal Mouse Wheel support. -// 2018-01-08: Inputs: Added mapping for ImGuiKey_Insert. -// 2018-01-05: Inputs: Added WM_LBUTTONDBLCLK double-click handlers for window classes with the CS_DBLCLKS flag. -// 2017-10-23: Inputs: Added WM_SYSKEYDOWN / WM_SYSKEYUP handlers so e.g. the VK_MENU key can be read. -// 2017-10-23: Inputs: Using Win32 ::SetCapture/::GetCapture() to retrieve mouse positions outside the client area when dragging. -// 2016-11-12: Inputs: Only call Win32 ::SetCursor(nullptr) when io.MouseDrawCursor is set. - -#include "imgui.h" -#ifndef IMGUI_DISABLE -#include "imgui_impl_win32.h" -#ifndef WIN32_LEAN_AND_MEAN -#define WIN32_LEAN_AND_MEAN -#endif -#include <windows.h> -#include <windowsx.h> // GET_X_LPARAM(), GET_Y_LPARAM() -#include <tchar.h> -#include <dwmapi.h> - -// Using XInput for gamepad (will load DLL dynamically) -#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD -#include <xinput.h> -typedef DWORD(WINAPI* PFN_XInputGetCapabilities)(DWORD, DWORD, XINPUT_CAPABILITIES*); -typedef DWORD(WINAPI* PFN_XInputGetState)(DWORD, XINPUT_STATE*); -#endif - -// Clang/GCC warnings with -Weverything -#if defined(__clang__) -#pragma clang diagnostic push -#pragma clang diagnostic ignored "-Wcast-function-type" // warning: cast between incompatible function types (for loader) -#endif -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind -#pragma GCC diagnostic ignored "-Wcast-function-type" // warning: cast between incompatible function types (for loader) -#endif - -struct ImGui_ImplWin32_Data -{ - HWND hWnd; - HWND MouseHwnd; - int MouseTrackedArea; // 0: not tracked, 1: client area, 2: non-client area - int MouseButtonsDown; - INT64 Time; - INT64 TicksPerSecond; - ImGuiMouseCursor LastMouseCursor; - UINT32 KeyboardCodePage; - -#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD - bool HasGamepad; - bool WantUpdateHasGamepad; - HMODULE XInputDLL; - PFN_XInputGetCapabilities XInputGetCapabilities; - PFN_XInputGetState XInputGetState; -#endif - - ImGui_ImplWin32_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. -// FIXME: some shared resources (mouse cursor shape, gamepad) are mishandled when using multi-context. -static ImGui_ImplWin32_Data* ImGui_ImplWin32_GetBackendData() -{ - return ImGui::GetCurrentContext() ? (ImGui_ImplWin32_Data*)ImGui::GetIO().BackendPlatformUserData : nullptr; -} -static ImGui_ImplWin32_Data* ImGui_ImplWin32_GetBackendData(ImGuiIO& io) -{ - return (ImGui_ImplWin32_Data*)io.BackendPlatformUserData; -} - -// Functions -static void ImGui_ImplWin32_UpdateKeyboardCodePage(ImGuiIO& io) -{ - // Retrieve keyboard code page, required for handling of non-Unicode Windows. - ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData(io); - HKL keyboard_layout = ::GetKeyboardLayout(0); - LCID keyboard_lcid = MAKELCID(HIWORD(keyboard_layout), SORT_DEFAULT); - if (::GetLocaleInfoA(keyboard_lcid, (LOCALE_RETURN_NUMBER | LOCALE_IDEFAULTANSICODEPAGE), (LPSTR)&bd->KeyboardCodePage, sizeof(bd->KeyboardCodePage)) == 0) - bd->KeyboardCodePage = CP_ACP; // Fallback to default ANSI code page when fails. -} - -static bool ImGui_ImplWin32_InitEx(void* hwnd, bool platform_has_own_dc) -{ - ImGuiIO& io = ImGui::GetIO(); - IMGUI_CHECKVERSION(); - IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!"); - - INT64 perf_frequency, perf_counter; - if (!::QueryPerformanceFrequency((LARGE_INTEGER*)&perf_frequency)) - return false; - if (!::QueryPerformanceCounter((LARGE_INTEGER*)&perf_counter)) - return false; - - // Setup backend capabilities flags - ImGui_ImplWin32_Data* bd = IM_NEW(ImGui_ImplWin32_Data)(); - io.BackendPlatformUserData = (void*)bd; - io.BackendPlatformName = "imgui_impl_win32"; - io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional) - io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used) - - bd->hWnd = (HWND)hwnd; - bd->TicksPerSecond = perf_frequency; - bd->Time = perf_counter; - bd->LastMouseCursor = ImGuiMouseCursor_COUNT; - ImGui_ImplWin32_UpdateKeyboardCodePage(io); - - // Set platform dependent data in viewport - ImGuiViewport* main_viewport = ImGui::GetMainViewport(); - main_viewport->PlatformHandle = main_viewport->PlatformHandleRaw = (void*)bd->hWnd; - IM_UNUSED(platform_has_own_dc); // Used in 'docking' branch - - // Dynamically load XInput library -#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD - bd->WantUpdateHasGamepad = true; - const char* xinput_dll_names[] = - { - "xinput1_4.dll", // Windows 8+ - "xinput1_3.dll", // DirectX SDK - "xinput9_1_0.dll", // Windows Vista, Windows 7 - "xinput1_2.dll", // DirectX SDK - "xinput1_1.dll" // DirectX SDK - }; - for (int n = 0; n < IM_ARRAYSIZE(xinput_dll_names); n++) - if (HMODULE dll = ::LoadLibraryA(xinput_dll_names[n])) - { - bd->XInputDLL = dll; - bd->XInputGetCapabilities = (PFN_XInputGetCapabilities)::GetProcAddress(dll, "XInputGetCapabilities"); - bd->XInputGetState = (PFN_XInputGetState)::GetProcAddress(dll, "XInputGetState"); - break; - } -#endif // IMGUI_IMPL_WIN32_DISABLE_GAMEPAD - - return true; -} - -IMGUI_IMPL_API bool ImGui_ImplWin32_Init(void* hwnd) -{ - return ImGui_ImplWin32_InitEx(hwnd, false); -} - -IMGUI_IMPL_API bool ImGui_ImplWin32_InitForOpenGL(void* hwnd) -{ - // OpenGL needs CS_OWNDC - return ImGui_ImplWin32_InitEx(hwnd, true); -} - -void ImGui_ImplWin32_Shutdown() -{ - ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData(); - IM_ASSERT(bd != nullptr && "No platform backend to shutdown, or already shutdown?"); - ImGuiIO& io = ImGui::GetIO(); - - // Unload XInput library -#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD - if (bd->XInputDLL) - ::FreeLibrary(bd->XInputDLL); -#endif // IMGUI_IMPL_WIN32_DISABLE_GAMEPAD - - io.BackendPlatformName = nullptr; - io.BackendPlatformUserData = nullptr; - io.BackendFlags &= ~(ImGuiBackendFlags_HasMouseCursors | ImGuiBackendFlags_HasSetMousePos | ImGuiBackendFlags_HasGamepad); - IM_DELETE(bd); -} - -static bool ImGui_ImplWin32_UpdateMouseCursor(ImGuiIO& io, ImGuiMouseCursor imgui_cursor) -{ - if (io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange) - return false; - - if (imgui_cursor == ImGuiMouseCursor_None || io.MouseDrawCursor) - { - // Hide OS mouse cursor if imgui is drawing it or if it wants no cursor - ::SetCursor(nullptr); - } - else - { - // Show OS mouse cursor - LPTSTR win32_cursor = IDC_ARROW; - switch (imgui_cursor) - { - case ImGuiMouseCursor_Arrow: win32_cursor = IDC_ARROW; break; - case ImGuiMouseCursor_TextInput: win32_cursor = IDC_IBEAM; break; - case ImGuiMouseCursor_ResizeAll: win32_cursor = IDC_SIZEALL; break; - case ImGuiMouseCursor_ResizeEW: win32_cursor = IDC_SIZEWE; break; - case ImGuiMouseCursor_ResizeNS: win32_cursor = IDC_SIZENS; break; - case ImGuiMouseCursor_ResizeNESW: win32_cursor = IDC_SIZENESW; break; - case ImGuiMouseCursor_ResizeNWSE: win32_cursor = IDC_SIZENWSE; break; - case ImGuiMouseCursor_Hand: win32_cursor = IDC_HAND; break; - case ImGuiMouseCursor_Wait: win32_cursor = IDC_WAIT; break; - case ImGuiMouseCursor_Progress: win32_cursor = IDC_APPSTARTING; break; - case ImGuiMouseCursor_NotAllowed: win32_cursor = IDC_NO; break; - } - ::SetCursor(::LoadCursor(nullptr, win32_cursor)); - } - return true; -} - -static bool IsVkDown(int vk) -{ - return (::GetKeyState(vk) & 0x8000) != 0; -} - -static void ImGui_ImplWin32_AddKeyEvent(ImGuiIO& io, ImGuiKey key, bool down, int native_keycode, int native_scancode = -1) -{ - io.AddKeyEvent(key, down); - io.SetKeyEventNativeData(key, native_keycode, native_scancode); // To support legacy indexing (<1.87 user code) - IM_UNUSED(native_scancode); -} - -static void ImGui_ImplWin32_ProcessKeyEventsWorkarounds(ImGuiIO& io) -{ - // Left & right Shift keys: when both are pressed together, Windows tend to not generate the WM_KEYUP event for the first released one. - if (ImGui::IsKeyDown(ImGuiKey_LeftShift) && !IsVkDown(VK_LSHIFT)) - ImGui_ImplWin32_AddKeyEvent(io, ImGuiKey_LeftShift, false, VK_LSHIFT); - if (ImGui::IsKeyDown(ImGuiKey_RightShift) && !IsVkDown(VK_RSHIFT)) - ImGui_ImplWin32_AddKeyEvent(io, ImGuiKey_RightShift, false, VK_RSHIFT); - - // Sometimes WM_KEYUP for Win key is not passed down to the app (e.g. for Win+V on some setups, according to GLFW). - if (ImGui::IsKeyDown(ImGuiKey_LeftSuper) && !IsVkDown(VK_LWIN)) - ImGui_ImplWin32_AddKeyEvent(io, ImGuiKey_LeftSuper, false, VK_LWIN); - if (ImGui::IsKeyDown(ImGuiKey_RightSuper) && !IsVkDown(VK_RWIN)) - ImGui_ImplWin32_AddKeyEvent(io, ImGuiKey_RightSuper, false, VK_RWIN); -} - -static void ImGui_ImplWin32_UpdateKeyModifiers(ImGuiIO& io) -{ - io.AddKeyEvent(ImGuiMod_Ctrl, IsVkDown(VK_CONTROL)); - io.AddKeyEvent(ImGuiMod_Shift, IsVkDown(VK_SHIFT)); - io.AddKeyEvent(ImGuiMod_Alt, IsVkDown(VK_MENU)); - io.AddKeyEvent(ImGuiMod_Super, IsVkDown(VK_LWIN) || IsVkDown(VK_RWIN)); -} - -static void ImGui_ImplWin32_UpdateMouseData(ImGuiIO& io) -{ - ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData(io); - IM_ASSERT(bd->hWnd != 0); - - HWND focused_window = ::GetForegroundWindow(); - const bool is_app_focused = (focused_window == bd->hWnd); - if (is_app_focused) - { - // (Optional) Set OS mouse position from Dear ImGui if requested (rarely used, only when io.ConfigNavMoveSetMousePos is enabled by user) - if (io.WantSetMousePos) - { - POINT pos = { (int)io.MousePos.x, (int)io.MousePos.y }; - if (::ClientToScreen(bd->hWnd, &pos)) - ::SetCursorPos(pos.x, pos.y); - } - - // (Optional) Fallback to provide mouse position when focused (WM_MOUSEMOVE already provides this when hovered or captured) - // This also fills a short gap when clicking non-client area: WM_NCMOUSELEAVE -> modal OS move -> gap -> WM_NCMOUSEMOVE - if (!io.WantSetMousePos && bd->MouseTrackedArea == 0) - { - POINT pos; - if (::GetCursorPos(&pos) && ::ScreenToClient(bd->hWnd, &pos)) - io.AddMousePosEvent((float)pos.x, (float)pos.y); - } - } -} - -// Gamepad navigation mapping -static void ImGui_ImplWin32_UpdateGamepads(ImGuiIO& io) -{ -#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD - ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData(io); - - // Calling XInputGetState() every frame on disconnected gamepads is unfortunately too slow. - // Instead we refresh gamepad availability by calling XInputGetCapabilities() _only_ after receiving WM_DEVICECHANGE. - if (bd->WantUpdateHasGamepad) - { - XINPUT_CAPABILITIES caps = {}; - bd->HasGamepad = bd->XInputGetCapabilities ? (bd->XInputGetCapabilities(0, XINPUT_FLAG_GAMEPAD, &caps) == ERROR_SUCCESS) : false; - bd->WantUpdateHasGamepad = false; - } - - io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad; - XINPUT_STATE xinput_state; - XINPUT_GAMEPAD& gamepad = xinput_state.Gamepad; - if (!bd->HasGamepad || bd->XInputGetState == nullptr || bd->XInputGetState(0, &xinput_state) != ERROR_SUCCESS) - return; - io.BackendFlags |= ImGuiBackendFlags_HasGamepad; - - #define IM_SATURATE(V) (V < 0.0f ? 0.0f : V > 1.0f ? 1.0f : V) - #define MAP_BUTTON(KEY_NO, BUTTON_ENUM) { io.AddKeyEvent(KEY_NO, (gamepad.wButtons & BUTTON_ENUM) != 0); } - #define MAP_ANALOG(KEY_NO, VALUE, V0, V1) { float vn = (float)(VALUE - V0) / (float)(V1 - V0); io.AddKeyAnalogEvent(KEY_NO, vn > 0.10f, IM_SATURATE(vn)); } - MAP_BUTTON(ImGuiKey_GamepadStart, XINPUT_GAMEPAD_START); - MAP_BUTTON(ImGuiKey_GamepadBack, XINPUT_GAMEPAD_BACK); - MAP_BUTTON(ImGuiKey_GamepadFaceLeft, XINPUT_GAMEPAD_X); - MAP_BUTTON(ImGuiKey_GamepadFaceRight, XINPUT_GAMEPAD_B); - MAP_BUTTON(ImGuiKey_GamepadFaceUp, XINPUT_GAMEPAD_Y); - MAP_BUTTON(ImGuiKey_GamepadFaceDown, XINPUT_GAMEPAD_A); - MAP_BUTTON(ImGuiKey_GamepadDpadLeft, XINPUT_GAMEPAD_DPAD_LEFT); - MAP_BUTTON(ImGuiKey_GamepadDpadRight, XINPUT_GAMEPAD_DPAD_RIGHT); - MAP_BUTTON(ImGuiKey_GamepadDpadUp, XINPUT_GAMEPAD_DPAD_UP); - MAP_BUTTON(ImGuiKey_GamepadDpadDown, XINPUT_GAMEPAD_DPAD_DOWN); - MAP_BUTTON(ImGuiKey_GamepadL1, XINPUT_GAMEPAD_LEFT_SHOULDER); - MAP_BUTTON(ImGuiKey_GamepadR1, XINPUT_GAMEPAD_RIGHT_SHOULDER); - MAP_ANALOG(ImGuiKey_GamepadL2, gamepad.bLeftTrigger, XINPUT_GAMEPAD_TRIGGER_THRESHOLD, 255); - MAP_ANALOG(ImGuiKey_GamepadR2, gamepad.bRightTrigger, XINPUT_GAMEPAD_TRIGGER_THRESHOLD, 255); - MAP_BUTTON(ImGuiKey_GamepadL3, XINPUT_GAMEPAD_LEFT_THUMB); - MAP_BUTTON(ImGuiKey_GamepadR3, XINPUT_GAMEPAD_RIGHT_THUMB); - MAP_ANALOG(ImGuiKey_GamepadLStickLeft, gamepad.sThumbLX, -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, -32768); - MAP_ANALOG(ImGuiKey_GamepadLStickRight, gamepad.sThumbLX, +XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, +32767); - MAP_ANALOG(ImGuiKey_GamepadLStickUp, gamepad.sThumbLY, +XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, +32767); - MAP_ANALOG(ImGuiKey_GamepadLStickDown, gamepad.sThumbLY, -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, -32768); - MAP_ANALOG(ImGuiKey_GamepadRStickLeft, gamepad.sThumbRX, -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, -32768); - MAP_ANALOG(ImGuiKey_GamepadRStickRight, gamepad.sThumbRX, +XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, +32767); - MAP_ANALOG(ImGuiKey_GamepadRStickUp, gamepad.sThumbRY, +XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, +32767); - MAP_ANALOG(ImGuiKey_GamepadRStickDown, gamepad.sThumbRY, -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, -32768); - #undef MAP_BUTTON - #undef MAP_ANALOG -#else // #ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD - IM_UNUSED(io); -#endif -} - -void ImGui_ImplWin32_NewFrame() -{ - ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData(); - IM_ASSERT(bd != nullptr && "Context or backend not initialized? Did you call ImGui_ImplWin32_Init()?"); - ImGuiIO& io = ImGui::GetIO(); - - // Setup display size (every frame to accommodate for window resizing) - RECT rect = { 0, 0, 0, 0 }; - ::GetClientRect(bd->hWnd, &rect); - io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top)); - - // Setup time step - INT64 current_time = 0; - ::QueryPerformanceCounter((LARGE_INTEGER*)¤t_time); - io.DeltaTime = (float)(current_time - bd->Time) / bd->TicksPerSecond; - bd->Time = current_time; - - // Update OS mouse position - ImGui_ImplWin32_UpdateMouseData(io); - - // Process workarounds for known Windows key handling issues - ImGui_ImplWin32_ProcessKeyEventsWorkarounds(io); - - // Update OS mouse cursor with the cursor requested by imgui - ImGuiMouseCursor mouse_cursor = io.MouseDrawCursor ? ImGuiMouseCursor_None : ImGui::GetMouseCursor(); - if (bd->LastMouseCursor != mouse_cursor) - { - bd->LastMouseCursor = mouse_cursor; - ImGui_ImplWin32_UpdateMouseCursor(io, mouse_cursor); - } - - // Update game controllers (if enabled and available) - ImGui_ImplWin32_UpdateGamepads(io); -} - -// Map VK_xxx to ImGuiKey_xxx. -// Not static to allow third-party code to use that if they want to (but undocumented) -ImGuiKey ImGui_ImplWin32_KeyEventToImGuiKey(WPARAM wParam, LPARAM lParam); -ImGuiKey ImGui_ImplWin32_KeyEventToImGuiKey(WPARAM wParam, LPARAM lParam) -{ - // There is no distinct VK_xxx for keypad enter, instead it is VK_RETURN + KF_EXTENDED. - if ((wParam == VK_RETURN) && (HIWORD(lParam) & KF_EXTENDED)) - return ImGuiKey_KeypadEnter; - - const int scancode = (int)LOBYTE(HIWORD(lParam)); - //IMGUI_DEBUG_LOG("scancode %3d, keycode = 0x%02X\n", scancode, wParam); - switch (wParam) - { - case VK_TAB: return ImGuiKey_Tab; - case VK_LEFT: return ImGuiKey_LeftArrow; - case VK_RIGHT: return ImGuiKey_RightArrow; - case VK_UP: return ImGuiKey_UpArrow; - case VK_DOWN: return ImGuiKey_DownArrow; - case VK_PRIOR: return ImGuiKey_PageUp; - case VK_NEXT: return ImGuiKey_PageDown; - case VK_HOME: return ImGuiKey_Home; - case VK_END: return ImGuiKey_End; - case VK_INSERT: return ImGuiKey_Insert; - case VK_DELETE: return ImGuiKey_Delete; - case VK_BACK: return ImGuiKey_Backspace; - case VK_SPACE: return ImGuiKey_Space; - case VK_RETURN: return ImGuiKey_Enter; - case VK_ESCAPE: return ImGuiKey_Escape; - //case VK_OEM_7: return ImGuiKey_Apostrophe; - case VK_OEM_COMMA: return ImGuiKey_Comma; - //case VK_OEM_MINUS: return ImGuiKey_Minus; - case VK_OEM_PERIOD: return ImGuiKey_Period; - //case VK_OEM_2: return ImGuiKey_Slash; - //case VK_OEM_1: return ImGuiKey_Semicolon; - //case VK_OEM_PLUS: return ImGuiKey_Equal; - //case VK_OEM_4: return ImGuiKey_LeftBracket; - //case VK_OEM_5: return ImGuiKey_Backslash; - //case VK_OEM_6: return ImGuiKey_RightBracket; - //case VK_OEM_3: return ImGuiKey_GraveAccent; - case VK_CAPITAL: return ImGuiKey_CapsLock; - case VK_SCROLL: return ImGuiKey_ScrollLock; - case VK_NUMLOCK: return ImGuiKey_NumLock; - case VK_SNAPSHOT: return ImGuiKey_PrintScreen; - case VK_PAUSE: return ImGuiKey_Pause; - case VK_NUMPAD0: return ImGuiKey_Keypad0; - case VK_NUMPAD1: return ImGuiKey_Keypad1; - case VK_NUMPAD2: return ImGuiKey_Keypad2; - case VK_NUMPAD3: return ImGuiKey_Keypad3; - case VK_NUMPAD4: return ImGuiKey_Keypad4; - case VK_NUMPAD5: return ImGuiKey_Keypad5; - case VK_NUMPAD6: return ImGuiKey_Keypad6; - case VK_NUMPAD7: return ImGuiKey_Keypad7; - case VK_NUMPAD8: return ImGuiKey_Keypad8; - case VK_NUMPAD9: return ImGuiKey_Keypad9; - case VK_DECIMAL: return ImGuiKey_KeypadDecimal; - case VK_DIVIDE: return ImGuiKey_KeypadDivide; - case VK_MULTIPLY: return ImGuiKey_KeypadMultiply; - case VK_SUBTRACT: return ImGuiKey_KeypadSubtract; - case VK_ADD: return ImGuiKey_KeypadAdd; - case VK_LSHIFT: return ImGuiKey_LeftShift; - case VK_LCONTROL: return ImGuiKey_LeftCtrl; - case VK_LMENU: return ImGuiKey_LeftAlt; - case VK_LWIN: return ImGuiKey_LeftSuper; - case VK_RSHIFT: return ImGuiKey_RightShift; - case VK_RCONTROL: return ImGuiKey_RightCtrl; - case VK_RMENU: return ImGuiKey_RightAlt; - case VK_RWIN: return ImGuiKey_RightSuper; - case VK_APPS: 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': return ImGuiKey_A; - case 'B': return ImGuiKey_B; - case 'C': return ImGuiKey_C; - case 'D': return ImGuiKey_D; - case 'E': return ImGuiKey_E; - case 'F': return ImGuiKey_F; - case 'G': return ImGuiKey_G; - case 'H': return ImGuiKey_H; - case 'I': return ImGuiKey_I; - case 'J': return ImGuiKey_J; - case 'K': return ImGuiKey_K; - case 'L': return ImGuiKey_L; - case 'M': return ImGuiKey_M; - case 'N': return ImGuiKey_N; - case 'O': return ImGuiKey_O; - case 'P': return ImGuiKey_P; - case 'Q': return ImGuiKey_Q; - case 'R': return ImGuiKey_R; - case 'S': return ImGuiKey_S; - case 'T': return ImGuiKey_T; - case 'U': return ImGuiKey_U; - case 'V': return ImGuiKey_V; - case 'W': return ImGuiKey_W; - case 'X': return ImGuiKey_X; - case 'Y': return ImGuiKey_Y; - case 'Z': return ImGuiKey_Z; - case VK_F1: return ImGuiKey_F1; - case VK_F2: return ImGuiKey_F2; - case VK_F3: return ImGuiKey_F3; - case VK_F4: return ImGuiKey_F4; - case VK_F5: return ImGuiKey_F5; - case VK_F6: return ImGuiKey_F6; - case VK_F7: return ImGuiKey_F7; - case VK_F8: return ImGuiKey_F8; - case VK_F9: return ImGuiKey_F9; - case VK_F10: return ImGuiKey_F10; - case VK_F11: return ImGuiKey_F11; - case VK_F12: return ImGuiKey_F12; - case VK_F13: return ImGuiKey_F13; - case VK_F14: return ImGuiKey_F14; - case VK_F15: return ImGuiKey_F15; - case VK_F16: return ImGuiKey_F16; - case VK_F17: return ImGuiKey_F17; - case VK_F18: return ImGuiKey_F18; - case VK_F19: return ImGuiKey_F19; - case VK_F20: return ImGuiKey_F20; - case VK_F21: return ImGuiKey_F21; - case VK_F22: return ImGuiKey_F22; - case VK_F23: return ImGuiKey_F23; - case VK_F24: return ImGuiKey_F24; - case VK_BROWSER_BACK: return ImGuiKey_AppBack; - case VK_BROWSER_FORWARD: return ImGuiKey_AppForward; - default: break; - } - - // Fallback to scancode - // https://handmade.network/forums/t/2011-keyboard_inputs_-_scancodes,_raw_input,_text_input,_key_names - switch (scancode) - { - case 41: return ImGuiKey_GraveAccent; // VK_OEM_8 in EN-UK, VK_OEM_3 in EN-US, VK_OEM_7 in FR, VK_OEM_5 in DE, etc. - case 12: return ImGuiKey_Minus; - case 13: return ImGuiKey_Equal; - case 26: return ImGuiKey_LeftBracket; - case 27: return ImGuiKey_RightBracket; - case 86: return ImGuiKey_Oem102; - case 43: return ImGuiKey_Backslash; - case 39: return ImGuiKey_Semicolon; - case 40: return ImGuiKey_Apostrophe; - case 51: return ImGuiKey_Comma; - case 52: return ImGuiKey_Period; - case 53: return ImGuiKey_Slash; - default: break; - } - - return ImGuiKey_None; -} - -// Allow compilation with old Windows SDK. MinGW doesn't have default _WIN32_WINNT/WINVER versions. -#ifndef WM_MOUSEHWHEEL -#define WM_MOUSEHWHEEL 0x020E -#endif -#ifndef DBT_DEVNODES_CHANGED -#define DBT_DEVNODES_CHANGED 0x0007 -#endif - -// Helper to obtain the source of mouse messages. -// See https://learn.microsoft.com/en-us/windows/win32/tablet/system-events-and-mouse-messages -// Prefer to call this at the top of the message handler to avoid the possibility of other Win32 calls interfering with this. -static ImGuiMouseSource ImGui_ImplWin32_GetMouseSourceFromMessageExtraInfo() -{ - LPARAM extra_info = ::GetMessageExtraInfo(); - if ((extra_info & 0xFFFFFF80) == 0xFF515700) - return ImGuiMouseSource_Pen; - if ((extra_info & 0xFFFFFF80) == 0xFF515780) - return ImGuiMouseSource_TouchScreen; - return ImGuiMouseSource_Mouse; -} - -// Win32 message handler (process Win32 mouse/keyboard inputs, etc.) -// Call from your application's message handler. Keep calling your message handler unless this function returns TRUE. -// When implementing your own backend, you can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if Dear ImGui wants to use your inputs. -// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data. -// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data. -// Generally you may always pass all inputs to Dear ImGui, and hide them from your application based on those two flags. -// PS: We treat DBLCLK messages as regular mouse down messages, so this code will work on windows classes that have the CS_DBLCLKS flag set. Our own example app code doesn't set this flag. - -// Copy either line into your .cpp file to forward declare the function: -extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam); // Use ImGui::GetCurrentContext() -extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandlerEx(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, ImGuiIO& io); // Doesn't use ImGui::GetCurrentContext() - -IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) -{ - // Most backends don't have silent checks like this one, but we need it because WndProc are called early in CreateWindow(). - // We silently allow both context or just only backend data to be nullptr. - if (ImGui::GetCurrentContext() == nullptr) - return 0; - return ImGui_ImplWin32_WndProcHandlerEx(hwnd, msg, wParam, lParam, ImGui::GetIO()); -} - -// This version is in theory thread-safe in the sense that no path should access ImGui::GetCurrentContext(). -IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandlerEx(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, ImGuiIO& io) -{ - ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData(io); - if (bd == nullptr) - return 0; - switch (msg) - { - case WM_MOUSEMOVE: - case WM_NCMOUSEMOVE: - { - // We need to call TrackMouseEvent in order to receive WM_MOUSELEAVE events - ImGuiMouseSource mouse_source = ImGui_ImplWin32_GetMouseSourceFromMessageExtraInfo(); - const int area = (msg == WM_MOUSEMOVE) ? 1 : 2; - bd->MouseHwnd = hwnd; - if (bd->MouseTrackedArea != area) - { - TRACKMOUSEEVENT tme_cancel = { sizeof(tme_cancel), TME_CANCEL, hwnd, 0 }; - TRACKMOUSEEVENT tme_track = { sizeof(tme_track), (DWORD)((area == 2) ? (TME_LEAVE | TME_NONCLIENT) : TME_LEAVE), hwnd, 0 }; - if (bd->MouseTrackedArea != 0) - ::TrackMouseEvent(&tme_cancel); - ::TrackMouseEvent(&tme_track); - bd->MouseTrackedArea = area; - } - POINT mouse_pos = { (LONG)GET_X_LPARAM(lParam), (LONG)GET_Y_LPARAM(lParam) }; - if (msg == WM_NCMOUSEMOVE && ::ScreenToClient(hwnd, &mouse_pos) == FALSE) // WM_NCMOUSEMOVE are provided in absolute coordinates. - return 0; - io.AddMouseSourceEvent(mouse_source); - io.AddMousePosEvent((float)mouse_pos.x, (float)mouse_pos.y); - return 0; - } - case WM_MOUSELEAVE: - case WM_NCMOUSELEAVE: - { - const int area = (msg == WM_MOUSELEAVE) ? 1 : 2; - if (bd->MouseTrackedArea == area) - { - if (bd->MouseHwnd == hwnd) - bd->MouseHwnd = nullptr; - bd->MouseTrackedArea = 0; - io.AddMousePosEvent(-FLT_MAX, -FLT_MAX); - } - return 0; - } - case WM_DESTROY: - if (bd->MouseHwnd == hwnd && bd->MouseTrackedArea != 0) - { - TRACKMOUSEEVENT tme_cancel = { sizeof(tme_cancel), TME_CANCEL, hwnd, 0 }; - ::TrackMouseEvent(&tme_cancel); - bd->MouseHwnd = nullptr; - bd->MouseTrackedArea = 0; - io.AddMousePosEvent(-FLT_MAX, -FLT_MAX); - } - return 0; - case WM_LBUTTONDOWN: case WM_LBUTTONDBLCLK: - case WM_RBUTTONDOWN: case WM_RBUTTONDBLCLK: - case WM_MBUTTONDOWN: case WM_MBUTTONDBLCLK: - case WM_XBUTTONDOWN: case WM_XBUTTONDBLCLK: - { - ImGuiMouseSource mouse_source = ImGui_ImplWin32_GetMouseSourceFromMessageExtraInfo(); - int button = 0; - if (msg == WM_LBUTTONDOWN || msg == WM_LBUTTONDBLCLK) { button = 0; } - if (msg == WM_RBUTTONDOWN || msg == WM_RBUTTONDBLCLK) { button = 1; } - if (msg == WM_MBUTTONDOWN || msg == WM_MBUTTONDBLCLK) { button = 2; } - if (msg == WM_XBUTTONDOWN || msg == WM_XBUTTONDBLCLK) { button = (GET_XBUTTON_WPARAM(wParam) == XBUTTON1) ? 3 : 4; } - HWND hwnd_with_capture = ::GetCapture(); - if (bd->MouseButtonsDown != 0 && hwnd_with_capture != hwnd) // Did we externally lost capture? - bd->MouseButtonsDown = 0; - if (bd->MouseButtonsDown == 0 && hwnd_with_capture == nullptr) - ::SetCapture(hwnd); // Allow us to read mouse coordinates when dragging mouse outside of our window bounds. - bd->MouseButtonsDown |= 1 << button; - io.AddMouseSourceEvent(mouse_source); - io.AddMouseButtonEvent(button, true); - return 0; - } - case WM_LBUTTONUP: - case WM_RBUTTONUP: - case WM_MBUTTONUP: - case WM_XBUTTONUP: - { - ImGuiMouseSource mouse_source = ImGui_ImplWin32_GetMouseSourceFromMessageExtraInfo(); - int button = 0; - if (msg == WM_LBUTTONUP) { button = 0; } - if (msg == WM_RBUTTONUP) { button = 1; } - if (msg == WM_MBUTTONUP) { button = 2; } - if (msg == WM_XBUTTONUP) { button = (GET_XBUTTON_WPARAM(wParam) == XBUTTON1) ? 3 : 4; } - bd->MouseButtonsDown &= ~(1 << button); - if (bd->MouseButtonsDown == 0 && ::GetCapture() == hwnd) - ::ReleaseCapture(); - io.AddMouseSourceEvent(mouse_source); - io.AddMouseButtonEvent(button, false); - return 0; - } - case WM_MOUSEWHEEL: - io.AddMouseWheelEvent(0.0f, (float)GET_WHEEL_DELTA_WPARAM(wParam) / (float)WHEEL_DELTA); - return 0; - case WM_MOUSEHWHEEL: - io.AddMouseWheelEvent(-(float)GET_WHEEL_DELTA_WPARAM(wParam) / (float)WHEEL_DELTA, 0.0f); - return 0; - case WM_KEYDOWN: - case WM_KEYUP: - case WM_SYSKEYDOWN: - case WM_SYSKEYUP: - { - const bool is_key_down = (msg == WM_KEYDOWN || msg == WM_SYSKEYDOWN); - if (wParam < 256) - { - // Submit modifiers - ImGui_ImplWin32_UpdateKeyModifiers(io); - - // Obtain virtual key code and convert to ImGuiKey - const ImGuiKey key = ImGui_ImplWin32_KeyEventToImGuiKey(wParam, lParam); - const int vk = (int)wParam; - const int scancode = (int)LOBYTE(HIWORD(lParam)); - - // Special behavior for VK_SNAPSHOT / ImGuiKey_PrintScreen as Windows doesn't emit the key down event. - if (key == ImGuiKey_PrintScreen && !is_key_down) - ImGui_ImplWin32_AddKeyEvent(io, key, true, vk, scancode); - - // Submit key event - if (key != ImGuiKey_None) - ImGui_ImplWin32_AddKeyEvent(io, key, is_key_down, vk, scancode); - - // Submit individual left/right modifier events - if (vk == VK_SHIFT) - { - // Important: Shift keys tend to get stuck when pressed together, missing key-up events are corrected in ImGui_ImplWin32_ProcessKeyEventsWorkarounds() - if (IsVkDown(VK_LSHIFT) == is_key_down) { ImGui_ImplWin32_AddKeyEvent(io, ImGuiKey_LeftShift, is_key_down, VK_LSHIFT, scancode); } - if (IsVkDown(VK_RSHIFT) == is_key_down) { ImGui_ImplWin32_AddKeyEvent(io, ImGuiKey_RightShift, is_key_down, VK_RSHIFT, scancode); } - } - else if (vk == VK_CONTROL) - { - if (IsVkDown(VK_LCONTROL) == is_key_down) { ImGui_ImplWin32_AddKeyEvent(io, ImGuiKey_LeftCtrl, is_key_down, VK_LCONTROL, scancode); } - if (IsVkDown(VK_RCONTROL) == is_key_down) { ImGui_ImplWin32_AddKeyEvent(io, ImGuiKey_RightCtrl, is_key_down, VK_RCONTROL, scancode); } - } - else if (vk == VK_MENU) - { - if (IsVkDown(VK_LMENU) == is_key_down) { ImGui_ImplWin32_AddKeyEvent(io, ImGuiKey_LeftAlt, is_key_down, VK_LMENU, scancode); } - if (IsVkDown(VK_RMENU) == is_key_down) { ImGui_ImplWin32_AddKeyEvent(io, ImGuiKey_RightAlt, is_key_down, VK_RMENU, scancode); } - } - } - return 0; - } - case WM_SETFOCUS: - case WM_KILLFOCUS: - io.AddFocusEvent(msg == WM_SETFOCUS); - return 0; - case WM_INPUTLANGCHANGE: - ImGui_ImplWin32_UpdateKeyboardCodePage(io); - return 0; - case WM_CHAR: - if (::IsWindowUnicode(hwnd)) - { - // You can also use ToAscii()+GetKeyboardState() to retrieve characters. - if (wParam > 0 && wParam < 0x10000) - io.AddInputCharacterUTF16((unsigned short)wParam); - } - else - { - wchar_t wch = 0; - ::MultiByteToWideChar(bd->KeyboardCodePage, MB_PRECOMPOSED, (char*)&wParam, 1, &wch, 1); - io.AddInputCharacter(wch); - } - return 0; - case WM_SETCURSOR: - // This is required to restore cursor when transitioning from e.g resize borders to client area. - if (LOWORD(lParam) == HTCLIENT && ImGui_ImplWin32_UpdateMouseCursor(io, bd->LastMouseCursor)) - return 1; - return 0; - case WM_DEVICECHANGE: -#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD - if ((UINT)wParam == DBT_DEVNODES_CHANGED) - bd->WantUpdateHasGamepad = true; -#endif - return 0; - } - return 0; -} - - -//-------------------------------------------------------------------------------------------------------- -// DPI-related helpers (optional) -//-------------------------------------------------------------------------------------------------------- -// - Use to enable DPI awareness without having to create an application manifest. -// - Your own app may already do this via a manifest or explicit calls. This is mostly useful for our examples/ apps. -// - In theory we could call simple functions from Windows SDK such as SetProcessDPIAware(), SetProcessDpiAwareness(), etc. -// but most of the functions provided by Microsoft require Windows 8.1/10+ SDK at compile time and Windows 8/10+ at runtime, -// neither we want to require the user to have. So we dynamically select and load those functions to avoid dependencies. -//--------------------------------------------------------------------------------------------------------- -// This is the scheme successfully used by GLFW (from which we borrowed some of the code) and other apps aiming to be highly portable. -// ImGui_ImplWin32_EnableDpiAwareness() is just a helper called by main.cpp, we don't call it automatically. -// If you are trying to implement your own backend for your own engine, you may ignore that noise. -//--------------------------------------------------------------------------------------------------------- - -// Perform our own check with RtlVerifyVersionInfo() instead of using functions from <VersionHelpers.h> as they -// require a manifest to be functional for checks above 8.1. See https://github.com/ocornut/imgui/issues/4200 -static BOOL _IsWindowsVersionOrGreater(WORD major, WORD minor, WORD) -{ - typedef LONG(WINAPI* PFN_RtlVerifyVersionInfo)(OSVERSIONINFOEXW*, ULONG, ULONGLONG); - static PFN_RtlVerifyVersionInfo RtlVerifyVersionInfoFn = nullptr; - if (RtlVerifyVersionInfoFn == nullptr) - if (HMODULE ntdllModule = ::GetModuleHandleA("ntdll.dll")) - RtlVerifyVersionInfoFn = (PFN_RtlVerifyVersionInfo)GetProcAddress(ntdllModule, "RtlVerifyVersionInfo"); - if (RtlVerifyVersionInfoFn == nullptr) - return FALSE; - - RTL_OSVERSIONINFOEXW versionInfo = { }; - ULONGLONG conditionMask = 0; - versionInfo.dwOSVersionInfoSize = sizeof(RTL_OSVERSIONINFOEXW); - versionInfo.dwMajorVersion = major; - versionInfo.dwMinorVersion = minor; - VER_SET_CONDITION(conditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL); - VER_SET_CONDITION(conditionMask, VER_MINORVERSION, VER_GREATER_EQUAL); - return (RtlVerifyVersionInfoFn(&versionInfo, VER_MAJORVERSION | VER_MINORVERSION, conditionMask) == 0) ? TRUE : FALSE; -} - -#define _IsWindowsVistaOrGreater() _IsWindowsVersionOrGreater(HIBYTE(0x0600), LOBYTE(0x0600), 0) // _WIN32_WINNT_VISTA -#define _IsWindows8OrGreater() _IsWindowsVersionOrGreater(HIBYTE(0x0602), LOBYTE(0x0602), 0) // _WIN32_WINNT_WIN8 -#define _IsWindows8Point1OrGreater() _IsWindowsVersionOrGreater(HIBYTE(0x0603), LOBYTE(0x0603), 0) // _WIN32_WINNT_WINBLUE -#define _IsWindows10OrGreater() _IsWindowsVersionOrGreater(HIBYTE(0x0A00), LOBYTE(0x0A00), 0) // _WIN32_WINNT_WINTHRESHOLD / _WIN32_WINNT_WIN10 - -#ifndef DPI_ENUMS_DECLARED -typedef enum { PROCESS_DPI_UNAWARE = 0, PROCESS_SYSTEM_DPI_AWARE = 1, PROCESS_PER_MONITOR_DPI_AWARE = 2 } PROCESS_DPI_AWARENESS; -typedef enum { MDT_EFFECTIVE_DPI = 0, MDT_ANGULAR_DPI = 1, MDT_RAW_DPI = 2, MDT_DEFAULT = MDT_EFFECTIVE_DPI } MONITOR_DPI_TYPE; -#endif -#ifndef _DPI_AWARENESS_CONTEXTS_ -DECLARE_HANDLE(DPI_AWARENESS_CONTEXT); -#define DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE (DPI_AWARENESS_CONTEXT)-3 -#endif -#ifndef DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2 -#define DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2 (DPI_AWARENESS_CONTEXT)-4 -#endif -typedef HRESULT(WINAPI* PFN_SetProcessDpiAwareness)(PROCESS_DPI_AWARENESS); // Shcore.lib + dll, Windows 8.1+ -typedef HRESULT(WINAPI* PFN_GetDpiForMonitor)(HMONITOR, MONITOR_DPI_TYPE, UINT*, UINT*); // Shcore.lib + dll, Windows 8.1+ -typedef DPI_AWARENESS_CONTEXT(WINAPI* PFN_SetThreadDpiAwarenessContext)(DPI_AWARENESS_CONTEXT); // User32.lib + dll, Windows 10 v1607+ (Creators Update) - -// Helper function to enable DPI awareness without setting up a manifest -void ImGui_ImplWin32_EnableDpiAwareness() -{ - if (_IsWindows10OrGreater()) - { - static HINSTANCE user32_dll = ::LoadLibraryA("user32.dll"); // Reference counted per-process - if (PFN_SetThreadDpiAwarenessContext SetThreadDpiAwarenessContextFn = (PFN_SetThreadDpiAwarenessContext)::GetProcAddress(user32_dll, "SetThreadDpiAwarenessContext")) - { - SetThreadDpiAwarenessContextFn(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2); - return; - } - } - if (_IsWindows8Point1OrGreater()) - { - static HINSTANCE shcore_dll = ::LoadLibraryA("shcore.dll"); // Reference counted per-process - if (PFN_SetProcessDpiAwareness SetProcessDpiAwarenessFn = (PFN_SetProcessDpiAwareness)::GetProcAddress(shcore_dll, "SetProcessDpiAwareness")) - { - SetProcessDpiAwarenessFn(PROCESS_PER_MONITOR_DPI_AWARE); - return; - } - } -#if _WIN32_WINNT >= 0x0600 - ::SetProcessDPIAware(); -#endif -} - -#if defined(_MSC_VER) && !defined(NOGDI) -#pragma comment(lib, "gdi32") // Link with gdi32.lib for GetDeviceCaps(). MinGW will require linking with '-lgdi32' -#endif - -float ImGui_ImplWin32_GetDpiScaleForMonitor(void* monitor) -{ - UINT xdpi = 96, ydpi = 96; - if (_IsWindows8Point1OrGreater()) - { - static HINSTANCE shcore_dll = ::LoadLibraryA("shcore.dll"); // Reference counted per-process - static PFN_GetDpiForMonitor GetDpiForMonitorFn = nullptr; - if (GetDpiForMonitorFn == nullptr && shcore_dll != nullptr) - GetDpiForMonitorFn = (PFN_GetDpiForMonitor)::GetProcAddress(shcore_dll, "GetDpiForMonitor"); - if (GetDpiForMonitorFn != nullptr) - { - GetDpiForMonitorFn((HMONITOR)monitor, MDT_EFFECTIVE_DPI, &xdpi, &ydpi); - IM_ASSERT(xdpi == ydpi); // Please contact me if you hit this assert! - return xdpi / 96.0f; - } - } -#ifndef NOGDI - const HDC dc = ::GetDC(nullptr); - xdpi = ::GetDeviceCaps(dc, LOGPIXELSX); - ydpi = ::GetDeviceCaps(dc, LOGPIXELSY); - IM_ASSERT(xdpi == ydpi); // Please contact me if you hit this assert! - ::ReleaseDC(nullptr, dc); -#endif - return xdpi / 96.0f; -} - -float ImGui_ImplWin32_GetDpiScaleForHwnd(void* hwnd) -{ - HMONITOR monitor = ::MonitorFromWindow((HWND)hwnd, MONITOR_DEFAULTTONEAREST); - return ImGui_ImplWin32_GetDpiScaleForMonitor(monitor); -} - -//--------------------------------------------------------------------------------------------------------- -// Transparency related helpers (optional) -//-------------------------------------------------------------------------------------------------------- - -#if defined(_MSC_VER) -#pragma comment(lib, "dwmapi") // Link with dwmapi.lib. MinGW will require linking with '-ldwmapi' -#endif - -// [experimental] -// Borrowed from GLFW's function updateFramebufferTransparency() in src/win32_window.c -// (the Dwm* functions are Vista era functions but we are borrowing logic from GLFW) -void ImGui_ImplWin32_EnableAlphaCompositing(void* hwnd) -{ - if (!_IsWindowsVistaOrGreater()) - return; - - BOOL composition; - if (FAILED(::DwmIsCompositionEnabled(&composition)) || !composition) - return; - - BOOL opaque; - DWORD color; - if (_IsWindows8OrGreater() || (SUCCEEDED(::DwmGetColorizationColor(&color, &opaque)) && !opaque)) - { - HRGN region = ::CreateRectRgn(0, 0, -1, -1); - DWM_BLURBEHIND bb = {}; - bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION; - bb.hRgnBlur = region; - bb.fEnable = TRUE; - ::DwmEnableBlurBehindWindow((HWND)hwnd, &bb); - ::DeleteObject(region); - } - else - { - DWM_BLURBEHIND bb = {}; - bb.dwFlags = DWM_BB_ENABLE; - ::DwmEnableBlurBehindWindow((HWND)hwnd, &bb); - } -} - -//--------------------------------------------------------------------------------------------------------- - -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif -#if defined(__clang__) -#pragma clang diagnostic pop -#endif - -#endif // #ifndef IMGUI_DISABLE |