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Backends: SDL2,SDL3: tidying up.

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features/potocpav-newer-lines-2
ocornut ago%!(EXTRA string=2 years)
parent e0ba0d0433
commit fd8d6dc5d1
2 changed files with 38 additions and 34 deletions
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  1. 36
      backends/imgui_impl_sdl2.cpp
  2. 36
      backends/imgui_impl_sdl3.cpp

36
backends/imgui_impl_sdl2.cpp
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@ -103,16 +103,18 @@
// SDL Data
struct ImGui_ImplSDL2_Data
{
SDL_Window* Window;
SDL_Renderer* Renderer;
Uint64 Time;
Uint32 MouseWindowID;
int MouseButtonsDown;
SDL_Cursor* MouseCursors[ImGuiMouseCursor_COUNT];
SDL_Cursor* LastMouseCursor;
int PendingMouseLeaveFrame;
char* ClipboardTextData;
bool MouseCanUseGlobalState;
SDL_Window* Window;
SDL_Renderer* Renderer;
Uint64 Time;
char* ClipboardTextData;
// Mouse handling
Uint32 MouseWindowID;
int MouseButtonsDown;
SDL_Cursor* MouseCursors[ImGuiMouseCursor_COUNT];
SDL_Cursor* MouseLastCursor;
int MouseLastLeaveFrame;
bool MouseCanUseGlobalState;
ImGui_ImplSDL2_Data() { memset((void*)this, 0, sizeof(*this)); }
};
@ -368,10 +370,10 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
if (window_event == SDL_WINDOWEVENT_ENTER)
{
bd->MouseWindowID = event->window.windowID;
bd->PendingMouseLeaveFrame = 0;
bd->MouseLastLeaveFrame = 0;
}
if (window_event == SDL_WINDOWEVENT_LEAVE)
bd->PendingMouseLeaveFrame = ImGui::GetFrameCount() + 1;
bd->MouseLastLeaveFrame = ImGui::GetFrameCount() + 1;
if (window_event == SDL_WINDOWEVENT_FOCUS_GAINED)
io.AddFocusEvent(true);
else if (event->window.event == SDL_WINDOWEVENT_FOCUS_LOST)
@ -511,7 +513,7 @@ void ImGui_ImplSDL2_Shutdown()
SDL_free(bd->ClipboardTextData);
for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
SDL_FreeCursor(bd->MouseCursors[cursor_n]);
bd->LastMouseCursor = nullptr;
bd->MouseLastCursor = nullptr;
io.BackendPlatformName = nullptr;
io.BackendPlatformUserData = nullptr;
@ -567,10 +569,10 @@ static void ImGui_ImplSDL2_UpdateMouseCursor()
{
// Show OS mouse cursor
SDL_Cursor* expected_cursor = bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow];
if (bd->LastMouseCursor != expected_cursor)
if (bd->MouseLastCursor != expected_cursor)
{
SDL_SetCursor(expected_cursor); // SDL function doesn't have an early out (see #6113)
bd->LastMouseCursor = expected_cursor;
bd->MouseLastCursor = expected_cursor;
}
SDL_ShowCursor(SDL_TRUE);
}
@ -651,10 +653,10 @@ void ImGui_ImplSDL2_NewFrame()
io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / frequency) : (float)(1.0f / 60.0f);
bd->Time = current_time;
if (bd->PendingMouseLeaveFrame && bd->PendingMouseLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)
if (bd->MouseLastLeaveFrame && bd->MouseLastLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)
{
bd->MouseWindowID = 0;
bd->PendingMouseLeaveFrame = 0;
bd->MouseLastLeaveFrame = 0;
io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
}

36
backends/imgui_impl_sdl3.cpp
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@ -61,16 +61,18 @@
// SDL Data
struct ImGui_ImplSDL3_Data
{
SDL_Window* Window;
SDL_Renderer* Renderer;
Uint64 Time;
Uint32 MouseWindowID;
int MouseButtonsDown;
SDL_Cursor* MouseCursors[ImGuiMouseCursor_COUNT];
SDL_Cursor* LastMouseCursor;
int PendingMouseLeaveFrame;
char* ClipboardTextData;
bool MouseCanUseGlobalState;
SDL_Window* Window;
SDL_Renderer* Renderer;
Uint64 Time;
char* ClipboardTextData;
// Mouse handling
Uint32 MouseWindowID;
int MouseButtonsDown;
SDL_Cursor* MouseCursors[ImGuiMouseCursor_COUNT];
SDL_Cursor* MouseLastCursor;
int MousePendingLeaveFrame;
bool MouseCanUseGlobalState;
ImGui_ImplSDL3_Data() { memset((void*)this, 0, sizeof(*this)); }
};
@ -312,7 +314,7 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
case SDL_EVENT_WINDOW_MOUSE_ENTER:
{
bd->MouseWindowID = event->window.windowID;
bd->PendingMouseLeaveFrame = 0;
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,
@ -321,7 +323,7 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
// FIXME: Unconfirmed whether this is still needed with SDL3.
case SDL_EVENT_WINDOW_MOUSE_LEAVE:
{
bd->PendingMouseLeaveFrame = ImGui::GetFrameCount() + 1;
bd->MousePendingLeaveFrame = ImGui::GetFrameCount() + 1;
return true;
}
case SDL_EVENT_WINDOW_FOCUS_GAINED:
@ -455,7 +457,7 @@ void ImGui_ImplSDL3_Shutdown()
SDL_free(bd->ClipboardTextData);
for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
SDL_DestroyCursor(bd->MouseCursors[cursor_n]);
bd->LastMouseCursor = nullptr;
bd->MouseLastCursor = nullptr;
io.BackendPlatformName = nullptr;
io.BackendPlatformUserData = nullptr;
@ -514,10 +516,10 @@ static void ImGui_ImplSDL3_UpdateMouseCursor()
{
// Show OS mouse cursor
SDL_Cursor* expected_cursor = bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow];
if (bd->LastMouseCursor != expected_cursor)
if (bd->MouseLastCursor != expected_cursor)
{
SDL_SetCursor(expected_cursor); // SDL function doesn't have an early out (see #6113)
bd->LastMouseCursor = expected_cursor;
bd->MouseLastCursor = expected_cursor;
}
SDL_ShowCursor();
}
@ -595,10 +597,10 @@ void ImGui_ImplSDL3_NewFrame()
io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / frequency) : (float)(1.0f / 60.0f);
bd->Time = current_time;
if (bd->PendingMouseLeaveFrame && bd->PendingMouseLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)
if (bd->MousePendingLeaveFrame && bd->MousePendingLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)
{
bd->MouseWindowID = 0;
bd->PendingMouseLeaveFrame = 0;
bd->MousePendingLeaveFrame = 0;
io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
}

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