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Code Issues Activity Actions

Let userland retain the window backing store while drawing into it.

Browse source 
To start painting, call:
gui$get_window_backing_store()

Then finish up with:
gui$release_window_backing_store()

Process will retain the underlying GraphicsBitmap behind the scenes.
This fixes racing between the WindowServer and GUI clients.

This patch also adds a WSWindowLocker that is exactly what it sounds like.
This commit is contained in:
Andreas Kling 2019-01-24 23:40:12 +01:00
parent ccf3fc4618
commit 86eae0f8df
22 changed files with 244 additions and 102 deletions
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36
LibGUI/GWindow.cpp
View file

@ -39,14 +39,6 @@ GWindow::GWindow(GObject* parent)
exit(1);
}
GUI_WindowBackingStoreInfo backing;
int rc = gui_get_window_backing_store(m_window_id, &backing);
if (rc < 0) {
perror("gui_get_window_backing_store");
exit(1);
}
m_backing = GraphicsBitmap::create_wrapper(backing.size, backing.pixels);
windows().set(m_window_id, this);
}
@ -58,34 +50,16 @@ void GWindow::set_title(String&& title)
{
dbgprintf("GWindow::set_title \"%s\"\n", title.characters());
GUI_WindowParameters params;
int rc = gui_get_window_parameters(m_window_id, &params);
int rc = gui_set_window_title(m_window_id, title.characters(), title.length());
ASSERT(rc == 0);
strcpy(params.title, title.characters());;
rc = gui_set_window_parameters(m_window_id, &params);
ASSERT(rc == 0);
m_title = move(title);
}
void GWindow::set_rect(const Rect& rect)
void GWindow::set_rect(const Rect& a_rect)
{
// FIXME: This is a hack to fudge the race with WSWindowManager trying to display @ old rect.
sleep(10);
dbgprintf("GWindow::set_rect %d,%d %dx%d\n", m_rect.x(), m_rect.y(), m_rect.width(), m_rect.height());
GUI_WindowParameters params;
int rc = gui_get_window_parameters(m_window_id, &params);
dbgprintf("GWindow::set_rect! %d,%d %dx%d\n", a_rect.x(), a_rect.y(), a_rect.width(), a_rect.height());
GUI_Rect rect = a_rect;
int rc = gui_set_window_rect(m_window_id, &rect);
ASSERT(rc == 0);
params.rect = rect;
rc = gui_set_window_parameters(m_window_id, &params);
ASSERT(rc == 0);
m_rect = rect;
GUI_WindowBackingStoreInfo backing;
rc = gui_get_window_backing_store(m_window_id, &backing);
if (rc < 0) {
perror("gui_get_window_backing_store");
exit(1);
}
m_backing = GraphicsBitmap::create_wrapper(backing.size, backing.pixels);
}
void GWindow::event(GEvent& event)