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Backends: GLFW: sync clamped viewport positions

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This commit is contained in:
Kyle Bentley 2026-06-14 21:14:50 -05:00
parent b61e56346a
commit d44e4c09a9
1 changed files with 6 additions and 2 deletions
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8
backends/imgui_impl_glfw.cpp
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@ -31,6 +31,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2026-XX-XX: [Docking] Multi-viewport: treat different window position reported after glfwSetWindowPos() as an actual platform move. (#9356, #9398)
// 2026-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
// 2026-04-21: Added a Win32-specific implementation of ImGui_ImplGlfw_GetContentScaleXXXX functions for legacy GLFW 3.2.
// 2026-03-25: Mouse cursor is properly restored if changed by user app/code while using glfwSetInputMode(..., GLFW_CURSOR_DISABLED) or ImGuiConfigFlags_NoMouseCursorChange. Amend change from 2025-12-10.
@ -1314,7 +1315,7 @@ static void ImGui_ImplGlfw_WindowCloseCallback(GLFWwindow* window)
// - on Linux it is queued and invoked during glfwPollEvents()
// Because the event doesn't always fire on glfwSetWindowXXX() we use a frame counter tag to only
// ignore recent glfwSetWindowXXX() calls.
static void ImGui_ImplGlfw_WindowPosCallback(GLFWwindow* window, int, int)
static void ImGui_ImplGlfw_WindowPosCallback(GLFWwindow* window, int x, int y)
{
if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle(window))
{
@ -1322,7 +1323,10 @@ static void ImGui_ImplGlfw_WindowPosCallback(GLFWwindow* window, int, int)
{
bool ignore_event = (ImGui::GetFrameCount() <= vd->IgnoreWindowPosEventFrame + 1);
//data->IgnoreWindowPosEventFrame = -1;
if (ignore_event)
// The event may report a different position than requested when the window manager
// clamps/moves the platform window (e.g. Linux/X11 near monitor edges). In that case
// keep the viewport in sync with the real platform position instead of ignoring it.
if (ignore_event && x == (int)viewport->Pos.x && y == (int)viewport->Pos.y)
return;
}
viewport->PlatformRequestMove = true;