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Backends: SDL: no support for ImGuiBackendFlags_HasMouseHoveredViewport under OSX/LInux (#4960)

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ocornut 2022-01-31 11:47:44 +01:00
parent 27004aca70
commit 08350e53e7
1 changed files with 13 additions and 7 deletions
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10
backends/imgui_impl_sdl.cpp
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@ -367,10 +367,13 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window, void* sdl_gl_context)
io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)
io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)
if (mouse_can_use_global_state)
{
io.BackendFlags |= ImGuiBackendFlags_PlatformHasViewports; // We can create multi-viewports on the Platform side (optional)
// SDL on Linux/OSX doesn't report events for unfocused windows (see https://github.com/ocornut/imgui/issues/4960)
#ifdef _WIN32
if (mouse_can_use_global_state)
io.BackendFlags |= ImGuiBackendFlags_HasMouseHoveredViewport;// We can call io.AddMouseViewportEvent() with correct data (optional)
}
#endif
bd->Window = window;
bd->MouseCanUseGlobalState = mouse_can_use_global_state;
@ -528,12 +531,15 @@ static void ImGui_ImplSDL2_UpdateMouseData()
// 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 (SDL_Window* sdl_mouse_window = SDL_GetWindowFromID(bd->MouseWindowID))
if (ImGuiViewport* mouse_viewport = ImGui::FindViewportByPlatformHandle((void*)sdl_mouse_window))
mouse_viewport_id = mouse_viewport->ID;
io.AddMouseViewportEvent(mouse_viewport_id);
}
}
static void ImGui_ImplSDL2_UpdateMouseCursor()
{