1247 lines
61 KiB
C++
1247 lines
61 KiB
C++
// dear imgui: Platform Backend for SDL3
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// This needs to be used along with a Renderer (e.g. SDL_GPU, DirectX11, OpenGL3, Vulkan..)
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// (Info: SDL3 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)
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// Implemented features:
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// [X] Platform: Clipboard support.
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// [X] Platform: Mouse support. Can discriminate Mouse/TouchScreen.
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// [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 SDL_SCANCODE_* values are obsolete since 1.87 and not supported since 1.91.5]
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// [X] Platform: Gamepad support.
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// [X] Platform: Mouse cursor shape and visibility (ImGuiBackendFlags_HasMouseCursors). Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
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// [x] Platform: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable' -> the OS animation effect when window gets created/destroyed is problematic. SDL2 backend doesn't have issue.
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// Missing features or Issues:
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// [ ] Platform: Multi-viewport: Minimized windows seems to break mouse wheel events (at least under Windows).
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// [x] Platform: IME support. Position somehow broken in SDL3 + app needs to call 'SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");' before SDL_CreateWindow()!.
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// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
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// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
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// Learn about Dear ImGui:
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// - FAQ https://dearimgui.com/faq
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// - Getting Started https://dearimgui.com/getting-started
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// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
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// - Introduction, links and more at the top of imgui.cpp
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// CHANGELOG
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// (minor and older changes stripped away, please see git history for details)
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// 2025-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
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// 2025-06-27: IME: avoid calling SDL_StartTextInput() again if already active. (#8727)
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// 2025-05-15: [Docking] Add Platform_GetWindowFramebufferScale() handler, to allow varying Retina display density on multiple monitors.
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// 2025-05-06: [Docking] macOS: fixed secondary viewports not appearing on other monitors before of parenting.
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// 2025-04-09: [Docking] Revert update monitors and work areas information every frame. Only do it on Windows. (#8415, #8558)
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// 2025-04-22: IME: honor ImGuiPlatformImeData->WantTextInput as an alternative way to call SDL_StartTextInput(), without IME being necessarily visible.
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// 2025-04-09: Don't attempt to call SDL_CaptureMouse() on drivers where we don't call SDL_GetGlobalMouseState(). (#8561)
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// 2025-03-30: Update for SDL3 api changes: Revert SDL_GetClipboardText() memory ownership change. (#8530, #7801)
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// 2025-03-21: Fill gamepad inputs and set ImGuiBackendFlags_HasGamepad regardless of ImGuiConfigFlags_NavEnableGamepad being set.
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// 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)
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// 2025-02-26: Only start SDL_CaptureMouse() when mouse is being dragged, to mitigate issues with e.g.Linux debuggers not claiming capture back. (#6410, #3650)
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// 2025-02-25: [Docking] Revert to use SDL_GetDisplayBounds() for WorkPos/WorkRect if SDL_GetDisplayUsableBounds() failed.
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// 2025-02-24: Avoid calling SDL_GetGlobalMouseState() when mouse is in relative mode.
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// 2025-02-21: [Docking] Update monitors and work areas information every frame, as the later may change regardless of monitor changes. (#8415)
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// 2025-02-18: Added ImGuiMouseCursor_Wait and ImGuiMouseCursor_Progress mouse cursor support.
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// 2025-02-10: Using SDL_OpenURL() in platform_io.Platform_OpenInShellFn handler.
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// 2025-01-20: Made ImGui_ImplSDL3_SetGamepadMode(ImGui_ImplSDL3_GamepadMode_Manual) accept an empty array.
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// 2024-10-24: Emscripten: SDL_EVENT_MOUSE_WHEEL event doesn't require dividing by 100.0f on Emscripten.
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// 2024-09-11: (Docking) Added support for viewport->ParentViewportId field to support parenting at OS level. (#7973)
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// 2024-09-03: Update for SDL3 api changes: SDL_GetGamepads() memory ownership revert. (#7918, #7898, #7807)
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// 2024-08-22: moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO:
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// - io.GetClipboardTextFn -> platform_io.Platform_GetClipboardTextFn
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// - io.SetClipboardTextFn -> platform_io.Platform_SetClipboardTextFn
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// - io.PlatformSetImeDataFn -> platform_io.Platform_SetImeDataFn
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// 2024-08-19: Storing SDL_WindowID inside ImGuiViewport::PlatformHandle instead of SDL_Window*.
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// 2024-08-19: ImGui_ImplSDL3_ProcessEvent() now ignores events intended for other SDL windows. (#7853)
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// 2024-07-22: Update for SDL3 api changes: SDL_GetGamepads() memory ownership change. (#7807)
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// 2024-07-18: Update for SDL3 api changes: SDL_GetClipboardText() memory ownership change. (#7801)
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// 2024-07-15: Update for SDL3 api changes: SDL_GetProperty() change to SDL_GetPointerProperty(). (#7794)
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// 2024-07-02: Update for SDL3 api changes: SDLK_x renames and SDLK_KP_x removals (#7761, #7762).
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// 2024-07-01: Update for SDL3 api changes: SDL_SetTextInputRect() changed to SDL_SetTextInputArea().
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// 2024-06-26: Update for SDL3 api changes: SDL_StartTextInput()/SDL_StopTextInput()/SDL_SetTextInputRect() functions signatures.
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// 2024-06-24: Update for SDL3 api changes: SDL_EVENT_KEY_DOWN/SDL_EVENT_KEY_UP contents.
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// 2024-06-03; Update for SDL3 api changes: SDL_SYSTEM_CURSOR_ renames.
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// 2024-05-15: Update for SDL3 api changes: SDLK_ renames.
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// 2024-04-15: Inputs: Re-enable calling SDL_StartTextInput()/SDL_StopTextInput() as SDL3 no longer enables it by default and should play nicer with IME.
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// 2024-02-13: Inputs: Fixed gamepad support. Handle gamepad disconnection. Added ImGui_ImplSDL3_SetGamepadMode().
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// 2023-11-13: Updated for recent SDL3 API changes.
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// 2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys, app back/forward keys.
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// 2023-05-04: Fixed build on Emscripten/iOS/Android. (#6391)
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// 2023-04-06: Inputs: Avoid calling SDL_StartTextInput()/SDL_StopTextInput() as they don't only pertain to IME. It's unclear exactly what their relation is to IME. (#6306)
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// 2023-04-04: Inputs: Added support for io.AddMouseSourceEvent() to discriminate ImGuiMouseSource_Mouse/ImGuiMouseSource_TouchScreen. (#2702)
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// 2023-02-23: Accept SDL_GetPerformanceCounter() not returning a monotonically increasing value. (#6189, #6114, #3644)
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// 2023-02-07: Forked "imgui_impl_sdl2" into "imgui_impl_sdl3". Removed version checks for old feature. Refer to imgui_impl_sdl2.cpp for older changelog.
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#include "imgui.h"
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#ifndef IMGUI_DISABLE
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#include "imgui_impl_sdl3.h"
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// Clang warnings with -Weverything
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#if defined(__clang__)
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast
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#pragma clang diagnostic ignored "-Wimplicit-int-float-conversion" // warning: implicit conversion from 'xxx' to 'float' may lose precision
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#endif
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// SDL
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#include <SDL3/SDL.h>
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#include <stdio.h> // for snprintf()
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#if defined(__APPLE__)
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#include <TargetConditionals.h>
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#endif
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#ifdef _WIN32
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#include <windows.h>
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#endif
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#if !defined(__EMSCRIPTEN__) && !defined(__ANDROID__) && !(defined(__APPLE__) && TARGET_OS_IOS) && !defined(__amigaos4__)
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#define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE 1
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#else
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#define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE 0
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#endif
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// FIXME-LEGACY: remove when SDL 3.1.3 preview is released.
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#ifndef SDLK_APOSTROPHE
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#define SDLK_APOSTROPHE SDLK_QUOTE
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#endif
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#ifndef SDLK_GRAVE
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#define SDLK_GRAVE SDLK_BACKQUOTE
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#endif
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// SDL Data
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struct ImGui_ImplSDL3_Data
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{
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SDL_Window* Window;
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SDL_WindowID WindowID;
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SDL_Renderer* Renderer;
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Uint64 Time;
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char* ClipboardTextData;
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char BackendPlatformName[48];
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bool UseVulkan;
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bool WantUpdateMonitors;
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// IME handling
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SDL_Window* ImeWindow;
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// Mouse handling
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Uint32 MouseWindowID;
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int MouseButtonsDown;
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SDL_Cursor* MouseCursors[ImGuiMouseCursor_COUNT];
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SDL_Cursor* MouseLastCursor;
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int MousePendingLeaveFrame;
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bool MouseCanUseGlobalState;
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bool MouseCanUseCapture;
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bool MouseCanReportHoveredViewport; // This is hard to use/unreliable on SDL so we'll set ImGuiBackendFlags_HasMouseHoveredViewport dynamically based on state.
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// Gamepad handling
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ImVector<SDL_Gamepad*> Gamepads;
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ImGui_ImplSDL3_GamepadMode GamepadMode;
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bool WantUpdateGamepadsList;
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ImGui_ImplSDL3_Data() { memset((void*)this, 0, sizeof(*this)); }
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};
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// Backend data stored in io.BackendPlatformUserData to allow support for multiple Dear ImGui contexts
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// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
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// FIXME: multi-context support is not well tested and probably dysfunctional in this backend.
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// FIXME: some shared resources (mouse cursor shape, gamepad) are mishandled when using multi-context.
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static ImGui_ImplSDL3_Data* ImGui_ImplSDL3_GetBackendData()
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{
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return ImGui::GetCurrentContext() ? (ImGui_ImplSDL3_Data*)ImGui::GetIO().BackendPlatformUserData : nullptr;
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}
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// Forward Declarations
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static void ImGui_ImplSDL3_UpdateMonitors();
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static void ImGui_ImplSDL3_InitMultiViewportSupport(SDL_Window* window, void* sdl_gl_context);
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static void ImGui_ImplSDL3_ShutdownMultiViewportSupport();
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// Functions
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static const char* ImGui_ImplSDL3_GetClipboardText(ImGuiContext*)
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{
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ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
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if (bd->ClipboardTextData)
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SDL_free(bd->ClipboardTextData);
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bd->ClipboardTextData = SDL_GetClipboardText();
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return bd->ClipboardTextData;
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}
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static void ImGui_ImplSDL3_SetClipboardText(ImGuiContext*, const char* text)
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{
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SDL_SetClipboardText(text);
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}
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static void ImGui_ImplSDL3_PlatformSetImeData(ImGuiContext*, ImGuiViewport* viewport, ImGuiPlatformImeData* data)
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{
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ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
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SDL_WindowID window_id = (SDL_WindowID)(intptr_t)viewport->PlatformHandle;
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SDL_Window* window = SDL_GetWindowFromID(window_id);
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if ((!(data->WantVisible || data->WantTextInput) || bd->ImeWindow != window) && bd->ImeWindow != nullptr)
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{
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SDL_StopTextInput(bd->ImeWindow);
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bd->ImeWindow = nullptr;
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}
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if (data->WantVisible)
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{
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SDL_Rect r;
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r.x = (int)(data->InputPos.x - viewport->Pos.x);
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r.y = (int)(data->InputPos.y - viewport->Pos.y + data->InputLineHeight);
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r.w = 1;
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r.h = (int)data->InputLineHeight;
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SDL_SetTextInputArea(window, &r, 0);
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bd->ImeWindow = window;
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}
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if (!SDL_TextInputActive(window) && (data->WantVisible || data->WantTextInput))
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SDL_StartTextInput(window);
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}
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// Not static to allow third-party code to use that if they want to (but undocumented)
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ImGuiKey ImGui_ImplSDL3_KeyEventToImGuiKey(SDL_Keycode keycode, SDL_Scancode scancode);
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ImGuiKey ImGui_ImplSDL3_KeyEventToImGuiKey(SDL_Keycode keycode, SDL_Scancode scancode)
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{
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// Keypad doesn't have individual key values in SDL3
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switch (scancode)
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{
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case SDL_SCANCODE_KP_0: return ImGuiKey_Keypad0;
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case SDL_SCANCODE_KP_1: return ImGuiKey_Keypad1;
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case SDL_SCANCODE_KP_2: return ImGuiKey_Keypad2;
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case SDL_SCANCODE_KP_3: return ImGuiKey_Keypad3;
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case SDL_SCANCODE_KP_4: return ImGuiKey_Keypad4;
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case SDL_SCANCODE_KP_5: return ImGuiKey_Keypad5;
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case SDL_SCANCODE_KP_6: return ImGuiKey_Keypad6;
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case SDL_SCANCODE_KP_7: return ImGuiKey_Keypad7;
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case SDL_SCANCODE_KP_8: return ImGuiKey_Keypad8;
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case SDL_SCANCODE_KP_9: return ImGuiKey_Keypad9;
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case SDL_SCANCODE_KP_PERIOD: return ImGuiKey_KeypadDecimal;
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case SDL_SCANCODE_KP_DIVIDE: return ImGuiKey_KeypadDivide;
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case SDL_SCANCODE_KP_MULTIPLY: return ImGuiKey_KeypadMultiply;
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case SDL_SCANCODE_KP_MINUS: return ImGuiKey_KeypadSubtract;
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case SDL_SCANCODE_KP_PLUS: return ImGuiKey_KeypadAdd;
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case SDL_SCANCODE_KP_ENTER: return ImGuiKey_KeypadEnter;
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case SDL_SCANCODE_KP_EQUALS: return ImGuiKey_KeypadEqual;
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default: break;
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}
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switch (keycode)
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{
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case SDLK_TAB: return ImGuiKey_Tab;
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case SDLK_LEFT: return ImGuiKey_LeftArrow;
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case SDLK_RIGHT: return ImGuiKey_RightArrow;
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case SDLK_UP: return ImGuiKey_UpArrow;
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case SDLK_DOWN: return ImGuiKey_DownArrow;
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case SDLK_PAGEUP: return ImGuiKey_PageUp;
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case SDLK_PAGEDOWN: return ImGuiKey_PageDown;
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case SDLK_HOME: return ImGuiKey_Home;
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case SDLK_END: return ImGuiKey_End;
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case SDLK_INSERT: return ImGuiKey_Insert;
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case SDLK_DELETE: return ImGuiKey_Delete;
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case SDLK_BACKSPACE: return ImGuiKey_Backspace;
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case SDLK_SPACE: return ImGuiKey_Space;
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case SDLK_RETURN: return ImGuiKey_Enter;
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case SDLK_ESCAPE: return ImGuiKey_Escape;
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//case SDLK_APOSTROPHE: return ImGuiKey_Apostrophe;
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case SDLK_COMMA: return ImGuiKey_Comma;
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//case SDLK_MINUS: return ImGuiKey_Minus;
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case SDLK_PERIOD: return ImGuiKey_Period;
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//case SDLK_SLASH: return ImGuiKey_Slash;
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case SDLK_SEMICOLON: return ImGuiKey_Semicolon;
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//case SDLK_EQUALS: return ImGuiKey_Equal;
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//case SDLK_LEFTBRACKET: return ImGuiKey_LeftBracket;
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//case SDLK_BACKSLASH: return ImGuiKey_Backslash;
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//case SDLK_RIGHTBRACKET: return ImGuiKey_RightBracket;
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//case SDLK_GRAVE: return ImGuiKey_GraveAccent;
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case SDLK_CAPSLOCK: return ImGuiKey_CapsLock;
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case SDLK_SCROLLLOCK: return ImGuiKey_ScrollLock;
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case SDLK_NUMLOCKCLEAR: return ImGuiKey_NumLock;
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case SDLK_PRINTSCREEN: return ImGuiKey_PrintScreen;
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case SDLK_PAUSE: return ImGuiKey_Pause;
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case SDLK_LCTRL: return ImGuiKey_LeftCtrl;
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case SDLK_LSHIFT: return ImGuiKey_LeftShift;
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case SDLK_LALT: return ImGuiKey_LeftAlt;
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case SDLK_LGUI: return ImGuiKey_LeftSuper;
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case SDLK_RCTRL: return ImGuiKey_RightCtrl;
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case SDLK_RSHIFT: return ImGuiKey_RightShift;
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case SDLK_RALT: return ImGuiKey_RightAlt;
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case SDLK_RGUI: return ImGuiKey_RightSuper;
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case SDLK_APPLICATION: return ImGuiKey_Menu;
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case SDLK_0: return ImGuiKey_0;
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case SDLK_1: return ImGuiKey_1;
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case SDLK_2: return ImGuiKey_2;
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case SDLK_3: return ImGuiKey_3;
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case SDLK_4: return ImGuiKey_4;
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case SDLK_5: return ImGuiKey_5;
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case SDLK_6: return ImGuiKey_6;
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case SDLK_7: return ImGuiKey_7;
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case SDLK_8: return ImGuiKey_8;
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case SDLK_9: return ImGuiKey_9;
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case SDLK_A: return ImGuiKey_A;
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case SDLK_B: return ImGuiKey_B;
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case SDLK_C: return ImGuiKey_C;
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case SDLK_D: return ImGuiKey_D;
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case SDLK_E: return ImGuiKey_E;
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case SDLK_F: return ImGuiKey_F;
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case SDLK_G: return ImGuiKey_G;
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case SDLK_H: return ImGuiKey_H;
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case SDLK_I: return ImGuiKey_I;
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case SDLK_J: return ImGuiKey_J;
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case SDLK_K: return ImGuiKey_K;
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case SDLK_L: return ImGuiKey_L;
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case SDLK_M: return ImGuiKey_M;
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case SDLK_N: return ImGuiKey_N;
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case SDLK_O: return ImGuiKey_O;
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case SDLK_P: return ImGuiKey_P;
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case SDLK_Q: return ImGuiKey_Q;
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case SDLK_R: return ImGuiKey_R;
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case SDLK_S: return ImGuiKey_S;
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case SDLK_T: return ImGuiKey_T;
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case SDLK_U: return ImGuiKey_U;
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case SDLK_V: return ImGuiKey_V;
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case SDLK_W: return ImGuiKey_W;
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case SDLK_X: return ImGuiKey_X;
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case SDLK_Y: return ImGuiKey_Y;
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case SDLK_Z: return ImGuiKey_Z;
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case SDLK_F1: return ImGuiKey_F1;
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case SDLK_F2: return ImGuiKey_F2;
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case SDLK_F3: return ImGuiKey_F3;
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case SDLK_F4: return ImGuiKey_F4;
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case SDLK_F5: return ImGuiKey_F5;
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case SDLK_F6: return ImGuiKey_F6;
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case SDLK_F7: return ImGuiKey_F7;
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case SDLK_F8: return ImGuiKey_F8;
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case SDLK_F9: return ImGuiKey_F9;
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case SDLK_F10: return ImGuiKey_F10;
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case SDLK_F11: return ImGuiKey_F11;
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case SDLK_F12: return ImGuiKey_F12;
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case SDLK_F13: return ImGuiKey_F13;
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case SDLK_F14: return ImGuiKey_F14;
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case SDLK_F15: return ImGuiKey_F15;
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case SDLK_F16: return ImGuiKey_F16;
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case SDLK_F17: return ImGuiKey_F17;
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case SDLK_F18: return ImGuiKey_F18;
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case SDLK_F19: return ImGuiKey_F19;
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case SDLK_F20: return ImGuiKey_F20;
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case SDLK_F21: return ImGuiKey_F21;
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case SDLK_F22: return ImGuiKey_F22;
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case SDLK_F23: return ImGuiKey_F23;
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case SDLK_F24: return ImGuiKey_F24;
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case SDLK_AC_BACK: return ImGuiKey_AppBack;
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case SDLK_AC_FORWARD: return ImGuiKey_AppForward;
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default: break;
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}
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// Fallback to scancode
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switch (scancode)
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{
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case SDL_SCANCODE_GRAVE: return ImGuiKey_GraveAccent;
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case SDL_SCANCODE_MINUS: return ImGuiKey_Minus;
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case SDL_SCANCODE_EQUALS: return ImGuiKey_Equal;
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case SDL_SCANCODE_LEFTBRACKET: return ImGuiKey_LeftBracket;
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case SDL_SCANCODE_RIGHTBRACKET: return ImGuiKey_RightBracket;
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case SDL_SCANCODE_NONUSBACKSLASH: return ImGuiKey_Oem102;
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case SDL_SCANCODE_BACKSLASH: return ImGuiKey_Backslash;
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case SDL_SCANCODE_SEMICOLON: return ImGuiKey_Semicolon;
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case SDL_SCANCODE_APOSTROPHE: return ImGuiKey_Apostrophe;
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case SDL_SCANCODE_COMMA: return ImGuiKey_Comma;
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case SDL_SCANCODE_PERIOD: return ImGuiKey_Period;
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case SDL_SCANCODE_SLASH: return ImGuiKey_Slash;
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default: break;
|
|
}
|
|
return ImGuiKey_None;
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_UpdateKeyModifiers(SDL_Keymod sdl_key_mods)
|
|
{
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
io.AddKeyEvent(ImGuiMod_Ctrl, (sdl_key_mods & SDL_KMOD_CTRL) != 0);
|
|
io.AddKeyEvent(ImGuiMod_Shift, (sdl_key_mods & SDL_KMOD_SHIFT) != 0);
|
|
io.AddKeyEvent(ImGuiMod_Alt, (sdl_key_mods & SDL_KMOD_ALT) != 0);
|
|
io.AddKeyEvent(ImGuiMod_Super, (sdl_key_mods & SDL_KMOD_GUI) != 0);
|
|
}
|
|
|
|
static ImGuiViewport* ImGui_ImplSDL3_GetViewportForWindowID(SDL_WindowID window_id)
|
|
{
|
|
return ImGui::FindViewportByPlatformHandle((void*)(intptr_t)window_id);
|
|
}
|
|
|
|
// 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.
|
|
bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
|
|
{
|
|
ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
|
|
IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDL3_Init()?");
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
|
|
switch (event->type)
|
|
{
|
|
case SDL_EVENT_MOUSE_MOTION:
|
|
{
|
|
if (ImGui_ImplSDL3_GetViewportForWindowID(event->motion.windowID) == nullptr)
|
|
return false;
|
|
ImVec2 mouse_pos((float)event->motion.x, (float)event->motion.y);
|
|
if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
|
|
{
|
|
int window_x, window_y;
|
|
SDL_GetWindowPosition(SDL_GetWindowFromID(event->motion.windowID), &window_x, &window_y);
|
|
mouse_pos.x += window_x;
|
|
mouse_pos.y += window_y;
|
|
}
|
|
io.AddMouseSourceEvent(event->motion.which == SDL_TOUCH_MOUSEID ? ImGuiMouseSource_TouchScreen : ImGuiMouseSource_Mouse);
|
|
io.AddMousePosEvent(mouse_pos.x, mouse_pos.y);
|
|
return true;
|
|
}
|
|
case SDL_EVENT_MOUSE_WHEEL:
|
|
{
|
|
if (ImGui_ImplSDL3_GetViewportForWindowID(event->wheel.windowID) == nullptr)
|
|
return false;
|
|
//IMGUI_DEBUG_LOG("wheel %.2f %.2f, precise %.2f %.2f\n", (float)event->wheel.x, (float)event->wheel.y, event->wheel.preciseX, event->wheel.preciseY);
|
|
float wheel_x = -event->wheel.x;
|
|
float wheel_y = event->wheel.y;
|
|
io.AddMouseSourceEvent(event->wheel.which == SDL_TOUCH_MOUSEID ? ImGuiMouseSource_TouchScreen : ImGuiMouseSource_Mouse);
|
|
io.AddMouseWheelEvent(wheel_x, wheel_y);
|
|
return true;
|
|
}
|
|
case SDL_EVENT_MOUSE_BUTTON_DOWN:
|
|
case SDL_EVENT_MOUSE_BUTTON_UP:
|
|
{
|
|
if (ImGui_ImplSDL3_GetViewportForWindowID(event->button.windowID) == nullptr)
|
|
return false;
|
|
int mouse_button = -1;
|
|
if (event->button.button == SDL_BUTTON_LEFT) { mouse_button = 0; }
|
|
if (event->button.button == SDL_BUTTON_RIGHT) { mouse_button = 1; }
|
|
if (event->button.button == SDL_BUTTON_MIDDLE) { mouse_button = 2; }
|
|
if (event->button.button == SDL_BUTTON_X1) { mouse_button = 3; }
|
|
if (event->button.button == SDL_BUTTON_X2) { mouse_button = 4; }
|
|
if (mouse_button == -1)
|
|
break;
|
|
io.AddMouseSourceEvent(event->button.which == SDL_TOUCH_MOUSEID ? ImGuiMouseSource_TouchScreen : ImGuiMouseSource_Mouse);
|
|
io.AddMouseButtonEvent(mouse_button, (event->type == SDL_EVENT_MOUSE_BUTTON_DOWN));
|
|
bd->MouseButtonsDown = (event->type == SDL_EVENT_MOUSE_BUTTON_DOWN) ? (bd->MouseButtonsDown | (1 << mouse_button)) : (bd->MouseButtonsDown & ~(1 << mouse_button));
|
|
return true;
|
|
}
|
|
case SDL_EVENT_TEXT_INPUT:
|
|
{
|
|
if (ImGui_ImplSDL3_GetViewportForWindowID(event->text.windowID) == nullptr)
|
|
return false;
|
|
io.AddInputCharactersUTF8(event->text.text);
|
|
return true;
|
|
}
|
|
case SDL_EVENT_KEY_DOWN:
|
|
case SDL_EVENT_KEY_UP:
|
|
{
|
|
ImGuiViewport* viewport = ImGui_ImplSDL3_GetViewportForWindowID(event->key.windowID);
|
|
if (viewport == nullptr)
|
|
return false;
|
|
//IMGUI_DEBUG_LOG("SDL_EVENT_KEY_%s : key=0x%08X ('%s'), scancode=%d ('%s'), mod=%X, windowID=%d, viewport=%08X\n",
|
|
// (event->type == SDL_EVENT_KEY_DOWN) ? "DOWN" : "UP ", event->key.key, SDL_GetKeyName(event->key.key), event->key.scancode, SDL_GetScancodeName(event->key.scancode), event->key.mod, event->key.windowID, viewport ? viewport->ID : 0);
|
|
ImGui_ImplSDL3_UpdateKeyModifiers((SDL_Keymod)event->key.mod);
|
|
ImGuiKey key = ImGui_ImplSDL3_KeyEventToImGuiKey(event->key.key, event->key.scancode);
|
|
io.AddKeyEvent(key, (event->type == SDL_EVENT_KEY_DOWN));
|
|
io.SetKeyEventNativeData(key, (int)event->key.key, (int)event->key.scancode, (int)event->key.scancode); // To support legacy indexing (<1.87 user code). Legacy backend uses SDLK_*** as indices to IsKeyXXX() functions.
|
|
return true;
|
|
}
|
|
case SDL_EVENT_DISPLAY_ORIENTATION:
|
|
case SDL_EVENT_DISPLAY_ADDED:
|
|
case SDL_EVENT_DISPLAY_REMOVED:
|
|
case SDL_EVENT_DISPLAY_MOVED:
|
|
case SDL_EVENT_DISPLAY_CONTENT_SCALE_CHANGED:
|
|
{
|
|
bd->WantUpdateMonitors = true;
|
|
return true;
|
|
}
|
|
case SDL_EVENT_WINDOW_MOUSE_ENTER:
|
|
{
|
|
if (ImGui_ImplSDL3_GetViewportForWindowID(event->window.windowID) == nullptr)
|
|
return false;
|
|
bd->MouseWindowID = event->window.windowID;
|
|
bd->MousePendingLeaveFrame = 0;
|
|
return true;
|
|
}
|
|
// - In some cases, when detaching a window from main viewport SDL may send SDL_WINDOWEVENT_ENTER one frame too late,
|
|
// causing SDL_WINDOWEVENT_LEAVE on previous frame to interrupt drag operation by clear mouse position. This is why
|
|
// we delay process the SDL_WINDOWEVENT_LEAVE events by one frame. See issue #5012 for details.
|
|
// FIXME: Unconfirmed whether this is still needed with SDL3.
|
|
case SDL_EVENT_WINDOW_MOUSE_LEAVE:
|
|
{
|
|
if (ImGui_ImplSDL3_GetViewportForWindowID(event->window.windowID) == nullptr)
|
|
return false;
|
|
bd->MousePendingLeaveFrame = ImGui::GetFrameCount() + 1;
|
|
return true;
|
|
}
|
|
case SDL_EVENT_WINDOW_FOCUS_GAINED:
|
|
case SDL_EVENT_WINDOW_FOCUS_LOST:
|
|
{
|
|
ImGuiViewport* viewport = ImGui_ImplSDL3_GetViewportForWindowID(event->window.windowID);
|
|
if (viewport == nullptr)
|
|
return false;
|
|
//IMGUI_DEBUG_LOG("%s: windowId %d, viewport: %08X\n", (event->type == SDL_EVENT_WINDOW_FOCUS_GAINED) ? "SDL_EVENT_WINDOW_FOCUS_GAINED" : "SDL_WINDOWEVENT_FOCUS_LOST", event->window.windowID, viewport ? viewport->ID : 0);
|
|
io.AddFocusEvent(event->type == SDL_EVENT_WINDOW_FOCUS_GAINED);
|
|
return true;
|
|
}
|
|
case SDL_EVENT_WINDOW_CLOSE_REQUESTED:
|
|
case SDL_EVENT_WINDOW_MOVED:
|
|
case SDL_EVENT_WINDOW_RESIZED:
|
|
{
|
|
ImGuiViewport* viewport = ImGui_ImplSDL3_GetViewportForWindowID(event->window.windowID);
|
|
if (viewport == NULL)
|
|
return false;
|
|
if (event->type == SDL_EVENT_WINDOW_CLOSE_REQUESTED)
|
|
viewport->PlatformRequestClose = true;
|
|
if (event->type == SDL_EVENT_WINDOW_MOVED)
|
|
viewport->PlatformRequestMove = true;
|
|
if (event->type == SDL_EVENT_WINDOW_RESIZED)
|
|
viewport->PlatformRequestResize = true;
|
|
return true;
|
|
}
|
|
case SDL_EVENT_GAMEPAD_ADDED:
|
|
case SDL_EVENT_GAMEPAD_REMOVED:
|
|
{
|
|
bd->WantUpdateGamepadsList = true;
|
|
return true;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_SetupPlatformHandles(ImGuiViewport* viewport, SDL_Window* window)
|
|
{
|
|
viewport->PlatformHandle = (void*)(intptr_t)SDL_GetWindowID(window);
|
|
viewport->PlatformHandleRaw = nullptr;
|
|
#if defined(_WIN32) && !defined(__WINRT__)
|
|
viewport->PlatformHandleRaw = (HWND)SDL_GetPointerProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_WIN32_HWND_POINTER, nullptr);
|
|
#elif defined(__APPLE__)
|
|
viewport->PlatformHandleRaw = SDL_GetPointerProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_COCOA_WINDOW_POINTER, nullptr);
|
|
#endif
|
|
}
|
|
|
|
static bool ImGui_ImplSDL3_Init(SDL_Window* window, SDL_Renderer* renderer, void* sdl_gl_context)
|
|
{
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
IMGUI_CHECKVERSION();
|
|
IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
|
|
IM_UNUSED(sdl_gl_context); // Unused in this branch
|
|
//SDL_SetHint(SDL_HINT_EVENT_LOGGING, "2");
|
|
|
|
const int ver_linked = SDL_GetVersion();
|
|
|
|
// Setup backend capabilities flags
|
|
ImGui_ImplSDL3_Data* bd = IM_NEW(ImGui_ImplSDL3_Data)();
|
|
snprintf(bd->BackendPlatformName, sizeof(bd->BackendPlatformName), "imgui_impl_sdl3 (%d.%d.%d; %d.%d.%d)",
|
|
SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_MICRO_VERSION, SDL_VERSIONNUM_MAJOR(ver_linked), SDL_VERSIONNUM_MINOR(ver_linked), SDL_VERSIONNUM_MICRO(ver_linked));
|
|
io.BackendPlatformUserData = (void*)bd;
|
|
io.BackendPlatformName = bd->BackendPlatformName;
|
|
io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)
|
|
io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)
|
|
// (ImGuiBackendFlags_PlatformHasViewports may be set just below)
|
|
|
|
bd->Window = window;
|
|
bd->WindowID = SDL_GetWindowID(window);
|
|
bd->Renderer = renderer;
|
|
|
|
// SDL on Linux/OSX doesn't report events for unfocused windows (see https://github.com/ocornut/imgui/issues/4960)
|
|
// We will use 'MouseCanReportHoveredViewport' to set 'ImGuiBackendFlags_HasMouseHoveredViewport' dynamically each frame.
|
|
#ifndef __APPLE__
|
|
bd->MouseCanReportHoveredViewport = bd->MouseCanUseGlobalState;
|
|
#else
|
|
bd->MouseCanReportHoveredViewport = false;
|
|
#endif
|
|
|
|
// Check and store if we are on a SDL backend that supports SDL_GetGlobalMouseState() and SDL_CaptureMouse()
|
|
// ("wayland" and "rpi" don't support it, but we chose to use a white-list instead of a black-list)
|
|
bd->MouseCanUseGlobalState = false;
|
|
bd->MouseCanUseCapture = false;
|
|
#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE
|
|
const char* sdl_backend = SDL_GetCurrentVideoDriver();
|
|
const char* capture_and_global_state_whitelist[] = { "windows", "cocoa", "x11", "DIVE", "VMAN" };
|
|
for (const char* item : capture_and_global_state_whitelist)
|
|
if (strncmp(sdl_backend, item, strlen(item)) == 0)
|
|
bd->MouseCanUseGlobalState = bd->MouseCanUseCapture = true;
|
|
#endif
|
|
if (bd->MouseCanUseGlobalState)
|
|
io.BackendFlags |= ImGuiBackendFlags_PlatformHasViewports; // We can create multi-viewports on the Platform side (optional)
|
|
|
|
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
|
|
platform_io.Platform_SetClipboardTextFn = ImGui_ImplSDL3_SetClipboardText;
|
|
platform_io.Platform_GetClipboardTextFn = ImGui_ImplSDL3_GetClipboardText;
|
|
platform_io.Platform_SetImeDataFn = ImGui_ImplSDL3_PlatformSetImeData;
|
|
platform_io.Platform_OpenInShellFn = [](ImGuiContext*, const char* url) { return SDL_OpenURL(url) == 0; };
|
|
|
|
// Update monitor a first time during init
|
|
ImGui_ImplSDL3_UpdateMonitors();
|
|
|
|
// Gamepad handling
|
|
bd->GamepadMode = ImGui_ImplSDL3_GamepadMode_AutoFirst;
|
|
bd->WantUpdateGamepadsList = true;
|
|
|
|
// Load mouse cursors
|
|
bd->MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_DEFAULT);
|
|
bd->MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_TEXT);
|
|
bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_MOVE);
|
|
bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NS_RESIZE);
|
|
bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_EW_RESIZE);
|
|
bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NESW_RESIZE);
|
|
bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NWSE_RESIZE);
|
|
bd->MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_POINTER);
|
|
bd->MouseCursors[ImGuiMouseCursor_Wait] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_WAIT);
|
|
bd->MouseCursors[ImGuiMouseCursor_Progress] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_PROGRESS);
|
|
bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NOT_ALLOWED);
|
|
|
|
// Set platform dependent data in viewport
|
|
// Our mouse update function expect PlatformHandle to be filled for the main viewport
|
|
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
|
|
ImGui_ImplSDL3_SetupPlatformHandles(main_viewport, window);
|
|
|
|
// From 2.0.5: Set SDL hint to receive mouse click events on window focus, otherwise SDL doesn't emit the event.
|
|
// Without this, when clicking to gain focus, our widgets wouldn't activate even though they showed as hovered.
|
|
// (This is unfortunately a global SDL setting, so enabling it might have a side-effect on your application.
|
|
// It is unlikely to make a difference, but if your app absolutely needs to ignore the initial on-focus click:
|
|
// you can ignore SDL_EVENT_MOUSE_BUTTON_DOWN events coming right after a SDL_EVENT_WINDOW_FOCUS_GAINED)
|
|
SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1");
|
|
|
|
// From 2.0.22: Disable auto-capture, this is preventing drag and drop across multiple windows (see #5710)
|
|
SDL_SetHint(SDL_HINT_MOUSE_AUTO_CAPTURE, "0");
|
|
|
|
// SDL 3.x : see https://github.com/libsdl-org/SDL/issues/6659
|
|
SDL_SetHint("SDL_BORDERLESS_WINDOWED_STYLE", "0");
|
|
|
|
// We need SDL_CaptureMouse(), SDL_GetGlobalMouseState() from SDL 2.0.4+ to support multiple viewports.
|
|
// We left the call to ImGui_ImplSDL3_InitPlatformInterface() outside of #ifdef to avoid unused-function warnings.
|
|
if (io.BackendFlags & ImGuiBackendFlags_PlatformHasViewports)
|
|
ImGui_ImplSDL3_InitMultiViewportSupport(window, sdl_gl_context);
|
|
|
|
return true;
|
|
}
|
|
|
|
// Should technically be a SDL_GLContext but due to typedef it is sane to keep it void* in public interface.
|
|
bool ImGui_ImplSDL3_InitForOpenGL(SDL_Window* window, void* sdl_gl_context)
|
|
{
|
|
return ImGui_ImplSDL3_Init(window, nullptr, sdl_gl_context);
|
|
}
|
|
|
|
bool ImGui_ImplSDL3_InitForVulkan(SDL_Window* window)
|
|
{
|
|
if (!ImGui_ImplSDL3_Init(window, nullptr, nullptr))
|
|
return false;
|
|
ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
|
|
bd->UseVulkan = true;
|
|
return true;
|
|
}
|
|
|
|
bool ImGui_ImplSDL3_InitForD3D(SDL_Window* window)
|
|
{
|
|
#if !defined(_WIN32)
|
|
IM_ASSERT(0 && "Unsupported");
|
|
#endif
|
|
return ImGui_ImplSDL3_Init(window, nullptr, nullptr);
|
|
}
|
|
|
|
bool ImGui_ImplSDL3_InitForMetal(SDL_Window* window)
|
|
{
|
|
return ImGui_ImplSDL3_Init(window, nullptr, nullptr);
|
|
}
|
|
|
|
bool ImGui_ImplSDL3_InitForSDLRenderer(SDL_Window* window, SDL_Renderer* renderer)
|
|
{
|
|
return ImGui_ImplSDL3_Init(window, renderer, nullptr);
|
|
}
|
|
|
|
bool ImGui_ImplSDL3_InitForSDLGPU(SDL_Window* window)
|
|
{
|
|
return ImGui_ImplSDL3_Init(window, nullptr, nullptr);
|
|
}
|
|
|
|
bool ImGui_ImplSDL3_InitForOther(SDL_Window* window)
|
|
{
|
|
return ImGui_ImplSDL3_Init(window, nullptr, nullptr);
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_CloseGamepads();
|
|
|
|
void ImGui_ImplSDL3_Shutdown()
|
|
{
|
|
ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
|
|
IM_ASSERT(bd != nullptr && "No platform backend to shutdown, or already shutdown?");
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
|
|
ImGui_ImplSDL3_ShutdownMultiViewportSupport();
|
|
|
|
if (bd->ClipboardTextData)
|
|
SDL_free(bd->ClipboardTextData);
|
|
for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
|
|
SDL_DestroyCursor(bd->MouseCursors[cursor_n]);
|
|
ImGui_ImplSDL3_CloseGamepads();
|
|
|
|
io.BackendPlatformName = nullptr;
|
|
io.BackendPlatformUserData = nullptr;
|
|
io.BackendFlags &= ~(ImGuiBackendFlags_HasMouseCursors | ImGuiBackendFlags_HasSetMousePos | ImGuiBackendFlags_HasGamepad | ImGuiBackendFlags_PlatformHasViewports | ImGuiBackendFlags_HasMouseHoveredViewport);
|
|
IM_DELETE(bd);
|
|
}
|
|
|
|
// This code is incredibly messy because some of the functions we need for full viewport support are not available in SDL < 2.0.4.
|
|
static void ImGui_ImplSDL3_UpdateMouseData()
|
|
{
|
|
ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
|
|
// We forward mouse input when hovered or captured (via SDL_EVENT_MOUSE_MOTION) or when focused (below)
|
|
#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE
|
|
// - SDL_CaptureMouse() let the OS know e.g. that our drags can extend outside of parent boundaries (we want updated position) and shouldn't trigger other operations outside.
|
|
// - Debuggers under Linux tends to leave captured mouse on break, which may be very inconvenient, so to mitigate the issue we wait until mouse has moved to begin capture.
|
|
if (bd->MouseCanUseCapture)
|
|
{
|
|
bool want_capture = false;
|
|
for (int button_n = 0; button_n < ImGuiMouseButton_COUNT && !want_capture; button_n++)
|
|
if (ImGui::IsMouseDragging(button_n, 1.0f))
|
|
want_capture = true;
|
|
SDL_CaptureMouse(want_capture);
|
|
}
|
|
|
|
SDL_Window* focused_window = SDL_GetKeyboardFocus();
|
|
const bool is_app_focused = (focused_window && (bd->Window == focused_window || ImGui_ImplSDL3_GetViewportForWindowID(SDL_GetWindowID(focused_window)) != NULL));
|
|
#else
|
|
SDL_Window* focused_window = bd->Window;
|
|
const bool is_app_focused = (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_INPUT_FOCUS) != 0; // SDL 2.0.3 and non-windowed systems: single-viewport only
|
|
#endif
|
|
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)
|
|
{
|
|
#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE
|
|
if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
|
|
SDL_WarpMouseGlobal(io.MousePos.x, io.MousePos.y);
|
|
else
|
|
#endif
|
|
SDL_WarpMouseInWindow(bd->Window, io.MousePos.x, io.MousePos.y);
|
|
}
|
|
|
|
// (Optional) Fallback to provide mouse position when focused (SDL_EVENT_MOUSE_MOTION already provides this when hovered or captured)
|
|
const bool is_relative_mouse_mode = SDL_GetWindowRelativeMouseMode(bd->Window);
|
|
if (bd->MouseCanUseGlobalState && bd->MouseButtonsDown == 0 && !is_relative_mouse_mode)
|
|
{
|
|
// Single-viewport mode: mouse position in client window coordinates (io.MousePos is (0,0) when the mouse is on the upper-left corner of the app window)
|
|
// Multi-viewport mode: mouse position in OS absolute coordinates (io.MousePos is (0,0) when the mouse is on the upper-left of the primary monitor)
|
|
float mouse_x, mouse_y;
|
|
int window_x, window_y;
|
|
SDL_GetGlobalMouseState(&mouse_x, &mouse_y);
|
|
if (!(io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable))
|
|
{
|
|
SDL_GetWindowPosition(focused_window, &window_x, &window_y);
|
|
mouse_x -= window_x;
|
|
mouse_y -= window_y;
|
|
}
|
|
io.AddMousePosEvent((float)mouse_x, (float)mouse_y);
|
|
}
|
|
}
|
|
|
|
// (Optional) When using multiple viewports: call io.AddMouseViewportEvent() with the viewport the OS mouse cursor is hovering.
|
|
// If ImGuiBackendFlags_HasMouseHoveredViewport is not set by the backend, Dear imGui will ignore this field and infer the information using its flawed heuristic.
|
|
// - [!] SDL backend does NOT correctly ignore viewports with the _NoInputs flag.
|
|
// Some backend are not able to handle that correctly. If a backend report an hovered viewport that has the _NoInputs flag (e.g. when dragging a window
|
|
// for docking, the viewport has the _NoInputs flag in order to allow us to find the viewport under), then Dear ImGui is forced to ignore the value reported
|
|
// by the backend, and use its flawed heuristic to guess the viewport behind.
|
|
// - [X] SDL backend correctly reports this regardless of another viewport behind focused and dragged from (we need this to find a useful drag and drop target).
|
|
if (io.BackendFlags & ImGuiBackendFlags_HasMouseHoveredViewport)
|
|
{
|
|
ImGuiID mouse_viewport_id = 0;
|
|
if (ImGuiViewport* mouse_viewport = ImGui_ImplSDL3_GetViewportForWindowID(bd->MouseWindowID))
|
|
mouse_viewport_id = mouse_viewport->ID;
|
|
io.AddMouseViewportEvent(mouse_viewport_id);
|
|
}
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_UpdateMouseCursor()
|
|
{
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
if (io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange)
|
|
return;
|
|
ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
|
|
|
|
ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
|
|
if (io.MouseDrawCursor || imgui_cursor == ImGuiMouseCursor_None)
|
|
{
|
|
// Hide OS mouse cursor if imgui is drawing it or if it wants no cursor
|
|
SDL_HideCursor();
|
|
}
|
|
else
|
|
{
|
|
// Show OS mouse cursor
|
|
SDL_Cursor* expected_cursor = bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow];
|
|
if (bd->MouseLastCursor != expected_cursor)
|
|
{
|
|
SDL_SetCursor(expected_cursor); // SDL function doesn't have an early out (see #6113)
|
|
bd->MouseLastCursor = expected_cursor;
|
|
}
|
|
SDL_ShowCursor();
|
|
}
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_CloseGamepads()
|
|
{
|
|
ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
|
|
if (bd->GamepadMode != ImGui_ImplSDL3_GamepadMode_Manual)
|
|
for (SDL_Gamepad* gamepad : bd->Gamepads)
|
|
SDL_CloseGamepad(gamepad);
|
|
bd->Gamepads.resize(0);
|
|
}
|
|
|
|
void ImGui_ImplSDL3_SetGamepadMode(ImGui_ImplSDL3_GamepadMode mode, SDL_Gamepad** manual_gamepads_array, int manual_gamepads_count)
|
|
{
|
|
ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
|
|
ImGui_ImplSDL3_CloseGamepads();
|
|
if (mode == ImGui_ImplSDL3_GamepadMode_Manual)
|
|
{
|
|
IM_ASSERT(manual_gamepads_array != nullptr || manual_gamepads_count <= 0);
|
|
for (int n = 0; n < manual_gamepads_count; n++)
|
|
bd->Gamepads.push_back(manual_gamepads_array[n]);
|
|
}
|
|
else
|
|
{
|
|
IM_ASSERT(manual_gamepads_array == nullptr && manual_gamepads_count <= 0);
|
|
bd->WantUpdateGamepadsList = true;
|
|
}
|
|
bd->GamepadMode = mode;
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_UpdateGamepadButton(ImGui_ImplSDL3_Data* bd, ImGuiIO& io, ImGuiKey key, SDL_GamepadButton button_no)
|
|
{
|
|
bool merged_value = false;
|
|
for (SDL_Gamepad* gamepad : bd->Gamepads)
|
|
merged_value |= SDL_GetGamepadButton(gamepad, button_no) != 0;
|
|
io.AddKeyEvent(key, merged_value);
|
|
}
|
|
|
|
static inline float Saturate(float v) { return v < 0.0f ? 0.0f : v > 1.0f ? 1.0f : v; }
|
|
static void ImGui_ImplSDL3_UpdateGamepadAnalog(ImGui_ImplSDL3_Data* bd, ImGuiIO& io, ImGuiKey key, SDL_GamepadAxis axis_no, float v0, float v1)
|
|
{
|
|
float merged_value = 0.0f;
|
|
for (SDL_Gamepad* gamepad : bd->Gamepads)
|
|
{
|
|
float vn = Saturate((float)(SDL_GetGamepadAxis(gamepad, axis_no) - v0) / (float)(v1 - v0));
|
|
if (merged_value < vn)
|
|
merged_value = vn;
|
|
}
|
|
io.AddKeyAnalogEvent(key, merged_value > 0.1f, merged_value);
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_UpdateGamepads()
|
|
{
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
|
|
|
|
// Update list of gamepads to use
|
|
if (bd->WantUpdateGamepadsList && bd->GamepadMode != ImGui_ImplSDL3_GamepadMode_Manual)
|
|
{
|
|
ImGui_ImplSDL3_CloseGamepads();
|
|
int sdl_gamepads_count = 0;
|
|
SDL_JoystickID* sdl_gamepads = SDL_GetGamepads(&sdl_gamepads_count);
|
|
for (int n = 0; n < sdl_gamepads_count; n++)
|
|
if (SDL_Gamepad* gamepad = SDL_OpenGamepad(sdl_gamepads[n]))
|
|
{
|
|
bd->Gamepads.push_back(gamepad);
|
|
if (bd->GamepadMode == ImGui_ImplSDL3_GamepadMode_AutoFirst)
|
|
break;
|
|
}
|
|
bd->WantUpdateGamepadsList = false;
|
|
SDL_free(sdl_gamepads);
|
|
}
|
|
|
|
io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
|
|
if (bd->Gamepads.Size == 0)
|
|
return;
|
|
io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
|
|
|
|
// Update gamepad inputs
|
|
const int thumb_dead_zone = 8000; // SDL_gamepad.h suggests using this value.
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadStart, SDL_GAMEPAD_BUTTON_START);
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadBack, SDL_GAMEPAD_BUTTON_BACK);
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceLeft, SDL_GAMEPAD_BUTTON_WEST); // Xbox X, PS Square
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceRight, SDL_GAMEPAD_BUTTON_EAST); // Xbox B, PS Circle
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceUp, SDL_GAMEPAD_BUTTON_NORTH); // Xbox Y, PS Triangle
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadFaceDown, SDL_GAMEPAD_BUTTON_SOUTH); // Xbox A, PS Cross
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadLeft, SDL_GAMEPAD_BUTTON_DPAD_LEFT);
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadRight, SDL_GAMEPAD_BUTTON_DPAD_RIGHT);
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadUp, SDL_GAMEPAD_BUTTON_DPAD_UP);
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadDpadDown, SDL_GAMEPAD_BUTTON_DPAD_DOWN);
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadL1, SDL_GAMEPAD_BUTTON_LEFT_SHOULDER);
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadR1, SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER);
|
|
ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadL2, SDL_GAMEPAD_AXIS_LEFT_TRIGGER, 0.0f, 32767);
|
|
ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadR2, SDL_GAMEPAD_AXIS_RIGHT_TRIGGER, 0.0f, 32767);
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadL3, SDL_GAMEPAD_BUTTON_LEFT_STICK);
|
|
ImGui_ImplSDL3_UpdateGamepadButton(bd, io, ImGuiKey_GamepadR3, SDL_GAMEPAD_BUTTON_RIGHT_STICK);
|
|
ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickLeft, SDL_GAMEPAD_AXIS_LEFTX, -thumb_dead_zone, -32768);
|
|
ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickRight, SDL_GAMEPAD_AXIS_LEFTX, +thumb_dead_zone, +32767);
|
|
ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickUp, SDL_GAMEPAD_AXIS_LEFTY, -thumb_dead_zone, -32768);
|
|
ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadLStickDown, SDL_GAMEPAD_AXIS_LEFTY, +thumb_dead_zone, +32767);
|
|
ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickLeft, SDL_GAMEPAD_AXIS_RIGHTX, -thumb_dead_zone, -32768);
|
|
ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickRight, SDL_GAMEPAD_AXIS_RIGHTX, +thumb_dead_zone, +32767);
|
|
ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickUp, SDL_GAMEPAD_AXIS_RIGHTY, -thumb_dead_zone, -32768);
|
|
ImGui_ImplSDL3_UpdateGamepadAnalog(bd, io, ImGuiKey_GamepadRStickDown, SDL_GAMEPAD_AXIS_RIGHTY, +thumb_dead_zone, +32767);
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_UpdateMonitors()
|
|
{
|
|
ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
|
|
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
|
|
platform_io.Monitors.resize(0);
|
|
bd->WantUpdateMonitors = false;
|
|
|
|
int display_count;
|
|
SDL_DisplayID* displays = SDL_GetDisplays(&display_count);
|
|
for (int n = 0; n < display_count; n++)
|
|
{
|
|
// Warning: the validity of monitor DPI information on Windows depends on the application DPI awareness settings, which generally needs to be set in the manifest or at runtime.
|
|
SDL_DisplayID display_id = displays[n];
|
|
ImGuiPlatformMonitor monitor;
|
|
SDL_Rect r;
|
|
SDL_GetDisplayBounds(display_id, &r);
|
|
monitor.MainPos = monitor.WorkPos = ImVec2((float)r.x, (float)r.y);
|
|
monitor.MainSize = monitor.WorkSize = ImVec2((float)r.w, (float)r.h);
|
|
if (SDL_GetDisplayUsableBounds(display_id, &r) && r.w > 0 && r.h > 0)
|
|
{
|
|
monitor.WorkPos = ImVec2((float)r.x, (float)r.y);
|
|
monitor.WorkSize = ImVec2((float)r.w, (float)r.h);
|
|
}
|
|
monitor.DpiScale = SDL_GetDisplayContentScale(display_id); // See https://wiki.libsdl.org/SDL3/README-highdpi for details.
|
|
monitor.PlatformHandle = (void*)(intptr_t)n;
|
|
if (monitor.DpiScale <= 0.0f)
|
|
continue; // Some accessibility applications are declaring virtual monitors with a DPI of 0, see #7902.
|
|
platform_io.Monitors.push_back(monitor);
|
|
}
|
|
SDL_free(displays);
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_GetWindowSizeAndFramebufferScale(SDL_Window* window, ImVec2* out_size, ImVec2* out_framebuffer_scale)
|
|
{
|
|
int w, h;
|
|
int display_w, display_h;
|
|
SDL_GetWindowSize(window, &w, &h);
|
|
if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)
|
|
w = h = 0;
|
|
SDL_GetWindowSizeInPixels(window, &display_w, &display_h);
|
|
if (out_size != nullptr)
|
|
*out_size = ImVec2((float)w, (float)h);
|
|
if (out_framebuffer_scale != nullptr)
|
|
*out_framebuffer_scale = (w > 0 && h > 0) ? ImVec2((float)display_w / w, (float)display_h / h) : ImVec2(1.0f, 1.0f);
|
|
}
|
|
|
|
void ImGui_ImplSDL3_NewFrame()
|
|
{
|
|
ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
|
|
IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplSDL3_Init()?");
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
|
|
// Setup main viewport size (every frame to accommodate for window resizing)
|
|
ImGui_ImplSDL3_GetWindowSizeAndFramebufferScale(bd->Window, &io.DisplaySize, &io.DisplayFramebufferScale);
|
|
|
|
// Update monitors
|
|
#ifdef WIN32
|
|
bd->WantUpdateMonitors = true; // Keep polling under Windows to handle changes of work area when resizing task-bar (#8415)
|
|
#endif
|
|
if (bd->WantUpdateMonitors)
|
|
ImGui_ImplSDL3_UpdateMonitors();
|
|
|
|
// Setup time step (we could also use SDL_GetTicksNS() available since SDL3)
|
|
// (Accept SDL_GetPerformanceCounter() not returning a monotonically increasing value. Happens in VMs and Emscripten, see #6189, #6114, #3644)
|
|
static Uint64 frequency = SDL_GetPerformanceFrequency();
|
|
Uint64 current_time = SDL_GetPerformanceCounter();
|
|
if (current_time <= bd->Time)
|
|
current_time = bd->Time + 1;
|
|
io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / frequency) : (float)(1.0f / 60.0f);
|
|
bd->Time = current_time;
|
|
|
|
if (bd->MousePendingLeaveFrame && bd->MousePendingLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)
|
|
{
|
|
bd->MouseWindowID = 0;
|
|
bd->MousePendingLeaveFrame = 0;
|
|
io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
|
|
}
|
|
|
|
// Our io.AddMouseViewportEvent() calls will only be valid when not capturing.
|
|
// Technically speaking testing for 'bd->MouseButtonsDown == 0' would be more rigorous, but testing for payload reduces noise and potential side-effects.
|
|
if (bd->MouseCanReportHoveredViewport && ImGui::GetDragDropPayload() == nullptr)
|
|
io.BackendFlags |= ImGuiBackendFlags_HasMouseHoveredViewport;
|
|
else
|
|
io.BackendFlags &= ~ImGuiBackendFlags_HasMouseHoveredViewport;
|
|
|
|
ImGui_ImplSDL3_UpdateMouseData();
|
|
ImGui_ImplSDL3_UpdateMouseCursor();
|
|
|
|
// Update game controllers (if enabled and available)
|
|
ImGui_ImplSDL3_UpdateGamepads();
|
|
}
|
|
|
|
//--------------------------------------------------------------------------------------------------------
|
|
// MULTI-VIEWPORT / PLATFORM INTERFACE SUPPORT
|
|
// This is an _advanced_ and _optional_ feature, allowing the backend to create and handle multiple viewports simultaneously.
|
|
// If you are new to dear imgui or creating a new binding for dear imgui, it is recommended that you completely ignore this section first..
|
|
//--------------------------------------------------------------------------------------------------------
|
|
|
|
// Helper structure we store in the void* PlatformUserData field of each ImGuiViewport to easily retrieve our backend data.
|
|
struct ImGui_ImplSDL3_ViewportData
|
|
{
|
|
SDL_Window* Window;
|
|
SDL_Window* ParentWindow;
|
|
Uint32 WindowID; // Stored in ImGuiViewport::PlatformHandle. Use SDL_GetWindowFromID() to get SDL_Window* from Uint32 WindowID.
|
|
bool WindowOwned;
|
|
SDL_GLContext GLContext;
|
|
|
|
ImGui_ImplSDL3_ViewportData() { Window = ParentWindow = nullptr; WindowID = 0; WindowOwned = false; GLContext = nullptr; }
|
|
~ImGui_ImplSDL3_ViewportData() { IM_ASSERT(Window == nullptr && GLContext == nullptr); }
|
|
};
|
|
|
|
static SDL_Window* ImGui_ImplSDL3_GetSDLWindowFromViewportID(ImGuiID viewport_id)
|
|
{
|
|
if (viewport_id != 0)
|
|
if (ImGuiViewport* viewport = ImGui::FindViewportByID(viewport_id))
|
|
{
|
|
SDL_WindowID window_id = (SDL_WindowID)(intptr_t)viewport->PlatformHandle;
|
|
return SDL_GetWindowFromID(window_id);
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_CreateWindow(ImGuiViewport* viewport)
|
|
{
|
|
ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
|
|
ImGui_ImplSDL3_ViewportData* vd = IM_NEW(ImGui_ImplSDL3_ViewportData)();
|
|
viewport->PlatformUserData = vd;
|
|
|
|
vd->ParentWindow = ImGui_ImplSDL3_GetSDLWindowFromViewportID(viewport->ParentViewportId);
|
|
|
|
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
|
|
ImGui_ImplSDL3_ViewportData* main_viewport_data = (ImGui_ImplSDL3_ViewportData*)main_viewport->PlatformUserData;
|
|
|
|
// Share GL resources with main context
|
|
bool use_opengl = (main_viewport_data->GLContext != nullptr);
|
|
SDL_GLContext backup_context = nullptr;
|
|
if (use_opengl)
|
|
{
|
|
backup_context = SDL_GL_GetCurrentContext();
|
|
SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
|
|
SDL_GL_MakeCurrent(main_viewport_data->Window, main_viewport_data->GLContext);
|
|
}
|
|
|
|
SDL_WindowFlags sdl_flags = 0;
|
|
sdl_flags |= SDL_WINDOW_HIDDEN;
|
|
sdl_flags |= use_opengl ? SDL_WINDOW_OPENGL : (bd->UseVulkan ? SDL_WINDOW_VULKAN : 0);
|
|
sdl_flags |= SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_HIGH_PIXEL_DENSITY;
|
|
sdl_flags |= (viewport->Flags & ImGuiViewportFlags_NoDecoration) ? SDL_WINDOW_BORDERLESS : 0;
|
|
sdl_flags |= (viewport->Flags & ImGuiViewportFlags_NoDecoration) ? 0 : SDL_WINDOW_RESIZABLE;
|
|
sdl_flags |= (viewport->Flags & ImGuiViewportFlags_NoTaskBarIcon) ? SDL_WINDOW_UTILITY : 0;
|
|
sdl_flags |= (viewport->Flags & ImGuiViewportFlags_TopMost) ? SDL_WINDOW_ALWAYS_ON_TOP : 0;
|
|
vd->Window = SDL_CreateWindow("No Title Yet", (int)viewport->Size.x, (int)viewport->Size.y, sdl_flags);
|
|
#ifndef __APPLE__ // On Mac, SDL3 Parenting appears to prevent viewport from appearing in another monitor
|
|
SDL_SetWindowParent(vd->Window, vd->ParentWindow);
|
|
#endif
|
|
SDL_SetWindowPosition(vd->Window, (int)viewport->Pos.x, (int)viewport->Pos.y);
|
|
vd->WindowOwned = true;
|
|
if (use_opengl)
|
|
{
|
|
vd->GLContext = SDL_GL_CreateContext(vd->Window);
|
|
SDL_GL_SetSwapInterval(0);
|
|
}
|
|
if (use_opengl && backup_context)
|
|
SDL_GL_MakeCurrent(vd->Window, backup_context);
|
|
|
|
ImGui_ImplSDL3_SetupPlatformHandles(viewport, vd->Window);
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_DestroyWindow(ImGuiViewport* viewport)
|
|
{
|
|
if (ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData)
|
|
{
|
|
if (vd->GLContext && vd->WindowOwned)
|
|
SDL_GL_DestroyContext(vd->GLContext);
|
|
if (vd->Window && vd->WindowOwned)
|
|
SDL_DestroyWindow(vd->Window);
|
|
vd->GLContext = nullptr;
|
|
vd->Window = nullptr;
|
|
IM_DELETE(vd);
|
|
}
|
|
viewport->PlatformUserData = viewport->PlatformHandle = nullptr;
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_ShowWindow(ImGuiViewport* viewport)
|
|
{
|
|
ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
|
|
#if defined(_WIN32) && !(defined(WINAPI_FAMILY) && ((defined(WINAPI_FAMILY_APP) && WINAPI_FAMILY == WINAPI_FAMILY_APP) || (defined(WINAPI_FAMILY_GAMES) && WINAPI_FAMILY == WINAPI_FAMILY_GAMES)))
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HWND hwnd = (HWND)viewport->PlatformHandleRaw;
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// SDL hack: Show icon in task bar (#7989)
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// Note: SDL_WINDOW_UTILITY can be used to control task bar visibility, but on Windows, it does not affect child windows.
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if (!(viewport->Flags & ImGuiViewportFlags_NoTaskBarIcon))
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{
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LONG ex_style = ::GetWindowLong(hwnd, GWL_EXSTYLE);
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ex_style |= WS_EX_APPWINDOW;
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ex_style &= ~WS_EX_TOOLWINDOW;
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::ShowWindow(hwnd, SW_HIDE);
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::SetWindowLong(hwnd, GWL_EXSTYLE, ex_style);
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}
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#endif
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#ifdef __APPLE__
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SDL_SetHint(SDL_HINT_WINDOW_ACTIVATE_WHEN_SHOWN, "1"); // Otherwise new window appear under
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#else
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SDL_SetHint(SDL_HINT_WINDOW_ACTIVATE_WHEN_SHOWN, (viewport->Flags & ImGuiViewportFlags_NoFocusOnAppearing) ? "0" : "1");
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#endif
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SDL_ShowWindow(vd->Window);
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}
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static void ImGui_ImplSDL3_UpdateWindow(ImGuiViewport* viewport)
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{
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ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
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IM_UNUSED(vd);
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#ifndef __APPLE__ // On Mac, SDL3 Parenting appears to prevent viewport from appearing in another monitor
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// Update SDL3 parent if it changed _after_ creation.
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// This is for advanced apps that are manipulating ParentViewportID manually.
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SDL_Window* new_parent = ImGui_ImplSDL3_GetSDLWindowFromViewportID(viewport->ParentViewportId);
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if (new_parent != vd->ParentWindow)
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{
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vd->ParentWindow = new_parent;
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SDL_SetWindowParent(vd->Window, vd->ParentWindow);
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}
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#endif
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}
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static ImVec2 ImGui_ImplSDL3_GetWindowPos(ImGuiViewport* viewport)
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{
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ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
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int x = 0, y = 0;
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SDL_GetWindowPosition(vd->Window, &x, &y);
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return ImVec2((float)x, (float)y);
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}
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static void ImGui_ImplSDL3_SetWindowPos(ImGuiViewport* viewport, ImVec2 pos)
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{
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ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
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SDL_SetWindowPosition(vd->Window, (int)pos.x, (int)pos.y);
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}
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static ImVec2 ImGui_ImplSDL3_GetWindowSize(ImGuiViewport* viewport)
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{
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ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
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int w = 0, h = 0;
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SDL_GetWindowSize(vd->Window, &w, &h);
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return ImVec2((float)w, (float)h);
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}
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static void ImGui_ImplSDL3_SetWindowSize(ImGuiViewport* viewport, ImVec2 size)
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{
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ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
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SDL_SetWindowSize(vd->Window, (int)size.x, (int)size.y);
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}
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static ImVec2 ImGui_ImplSDL3_GetWindowFramebufferScale(ImGuiViewport* viewport)
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{
|
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ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
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ImVec2 framebuffer_scale;
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ImGui_ImplSDL3_GetWindowSizeAndFramebufferScale(vd->Window, nullptr, &framebuffer_scale);
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return framebuffer_scale;
|
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}
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static void ImGui_ImplSDL3_SetWindowTitle(ImGuiViewport* viewport, const char* title)
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{
|
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ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
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SDL_SetWindowTitle(vd->Window, title);
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}
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|
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static void ImGui_ImplSDL3_SetWindowAlpha(ImGuiViewport* viewport, float alpha)
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|
{
|
|
ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
|
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SDL_SetWindowOpacity(vd->Window, alpha);
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}
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|
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static void ImGui_ImplSDL3_SetWindowFocus(ImGuiViewport* viewport)
|
|
{
|
|
ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
|
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SDL_RaiseWindow(vd->Window);
|
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}
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|
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static bool ImGui_ImplSDL3_GetWindowFocus(ImGuiViewport* viewport)
|
|
{
|
|
ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
|
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return (SDL_GetWindowFlags(vd->Window) & SDL_WINDOW_INPUT_FOCUS) != 0;
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}
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|
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static bool ImGui_ImplSDL3_GetWindowMinimized(ImGuiViewport* viewport)
|
|
{
|
|
ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
|
|
return (SDL_GetWindowFlags(vd->Window) & SDL_WINDOW_MINIMIZED) != 0;
|
|
}
|
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|
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static void ImGui_ImplSDL3_RenderWindow(ImGuiViewport* viewport, void*)
|
|
{
|
|
ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
|
|
if (vd->GLContext)
|
|
SDL_GL_MakeCurrent(vd->Window, vd->GLContext);
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_SwapBuffers(ImGuiViewport* viewport, void*)
|
|
{
|
|
ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
|
|
if (vd->GLContext)
|
|
{
|
|
SDL_GL_MakeCurrent(vd->Window, vd->GLContext);
|
|
SDL_GL_SwapWindow(vd->Window);
|
|
}
|
|
}
|
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|
|
// Vulkan support (the Vulkan renderer needs to call a platform-side support function to create the surface)
|
|
// SDL is graceful enough to _not_ need <vulkan/vulkan.h> so we can safely include this.
|
|
#include <SDL3/SDL_vulkan.h>
|
|
static int ImGui_ImplSDL3_CreateVkSurface(ImGuiViewport* viewport, ImU64 vk_instance, const void* vk_allocator, ImU64* out_vk_surface)
|
|
{
|
|
ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
|
|
(void)vk_allocator;
|
|
bool ret = SDL_Vulkan_CreateSurface(vd->Window, (VkInstance)vk_instance, (const VkAllocationCallbacks*)vk_allocator, (VkSurfaceKHR*)out_vk_surface);
|
|
return ret ? 0 : 1; // ret ? VK_SUCCESS : VK_NOT_READY
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_InitMultiViewportSupport(SDL_Window* window, void* sdl_gl_context)
|
|
{
|
|
// Register platform interface (will be coupled with a renderer interface)
|
|
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
|
|
platform_io.Platform_CreateWindow = ImGui_ImplSDL3_CreateWindow;
|
|
platform_io.Platform_DestroyWindow = ImGui_ImplSDL3_DestroyWindow;
|
|
platform_io.Platform_ShowWindow = ImGui_ImplSDL3_ShowWindow;
|
|
platform_io.Platform_UpdateWindow = ImGui_ImplSDL3_UpdateWindow;
|
|
platform_io.Platform_SetWindowPos = ImGui_ImplSDL3_SetWindowPos;
|
|
platform_io.Platform_GetWindowPos = ImGui_ImplSDL3_GetWindowPos;
|
|
platform_io.Platform_SetWindowSize = ImGui_ImplSDL3_SetWindowSize;
|
|
platform_io.Platform_GetWindowSize = ImGui_ImplSDL3_GetWindowSize;
|
|
platform_io.Platform_GetWindowFramebufferScale = ImGui_ImplSDL3_GetWindowFramebufferScale;
|
|
platform_io.Platform_SetWindowFocus = ImGui_ImplSDL3_SetWindowFocus;
|
|
platform_io.Platform_GetWindowFocus = ImGui_ImplSDL3_GetWindowFocus;
|
|
platform_io.Platform_GetWindowMinimized = ImGui_ImplSDL3_GetWindowMinimized;
|
|
platform_io.Platform_SetWindowTitle = ImGui_ImplSDL3_SetWindowTitle;
|
|
platform_io.Platform_RenderWindow = ImGui_ImplSDL3_RenderWindow;
|
|
platform_io.Platform_SwapBuffers = ImGui_ImplSDL3_SwapBuffers;
|
|
platform_io.Platform_SetWindowAlpha = ImGui_ImplSDL3_SetWindowAlpha;
|
|
platform_io.Platform_CreateVkSurface = ImGui_ImplSDL3_CreateVkSurface;
|
|
|
|
// Register main window handle (which is owned by the main application, not by us)
|
|
// This is mostly for simplicity and consistency, so that our code (e.g. mouse handling etc.) can use same logic for main and secondary viewports.
|
|
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
|
|
ImGui_ImplSDL3_ViewportData* vd = IM_NEW(ImGui_ImplSDL3_ViewportData)();
|
|
vd->Window = window;
|
|
vd->WindowID = SDL_GetWindowID(window);
|
|
vd->WindowOwned = false;
|
|
vd->GLContext = (SDL_GLContext)sdl_gl_context;
|
|
main_viewport->PlatformUserData = vd;
|
|
main_viewport->PlatformHandle = (void*)(intptr_t)vd->WindowID;
|
|
}
|
|
|
|
static void ImGui_ImplSDL3_ShutdownMultiViewportSupport()
|
|
{
|
|
ImGui::DestroyPlatformWindows();
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#if defined(__clang__)
|
|
#pragma clang diagnostic pop
|
|
#endif
|
|
|
|
#endif // #ifndef IMGUI_DISABLE
|