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WindowServer+LibGUI: Notify windows when their maximized state changes

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Previously, GUI::Window::is_maximized() had to make a synchronous IPC
request to WindowServer in order to find out if the window was indeed
maximized.

This patch removes the need for synchronous IPC by instead pushing the
maximization state to clients when it changes.

The motivation for this change was that GUI::Statusbar was checking
if the containing window was maximized in its resize_event(), causing
all windows with a statusbar to block on sync IPC *during* resize.
Browser would typically block for ~15 milliseconds here every time
on my machine, continuously during live resize.
This commit is contained in:
Andreas Kling 2022-04-05 17:40:53 +02:00
parent 463dc91049
commit 1a38ab0ca1
7 changed files with 16 additions and 20 deletions
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4
Userland/Libraries/LibGUI/ConnectionToWindowServer.cpp
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@ -372,10 +372,10 @@ void ConnectionToWindowServer::drag_cancelled()
Application::the()->notify_drag_cancelled({});
}
void ConnectionToWindowServer::window_state_changed(i32 window_id, bool minimized, bool occluded)
void ConnectionToWindowServer::window_state_changed(i32 window_id, bool minimized, bool maximized, bool occluded)
{
if (auto* window = Window::from_window_id(window_id))
window->notify_state_changed({}, minimized, occluded);
window->notify_state_changed({}, minimized, maximized, occluded);
}
void ConnectionToWindowServer::display_link_notification()