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window.c; Only redraw once per frame

Browse source 
Based on a patch from Martin Minarik <minarik11@student.fiit.stuba.sk> who
tracked down the excessive redraw problem.
This commit is contained in:
Kristian Høgsberg 2012-03-24 14:42:09 -04:00
parent 56456d6578
commit 6bd4d97271
1 changed files with 22 additions and 1 deletions
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23
clients/window.c
View file

@ -123,6 +123,7 @@ struct window {
int x, y;
int resize_edges;
int redraw_scheduled;
int redraw_needed;
struct task redraw_task;
int resize_scheduled;
struct task resize_task;
@ -2132,21 +2133,41 @@ widget_redraw(struct widget *widget)
widget_redraw(child);
}
static void
frame_callback(void *data, struct wl_callback *callback, uint32_t time)
{
struct window *window = data;
wl_callback_destroy(callback);
window->redraw_scheduled = 0;
if (window->redraw_needed)
window_schedule_redraw(window);
}
static const struct wl_callback_listener listener = {
frame_callback
};
static void
idle_redraw(struct task *task, uint32_t events)
{
struct window *window =
container_of(task, struct window, redraw_task);
struct wl_callback *callback;
window_create_surface(window);
widget_redraw(window->widget);
window_flush(window);
window->redraw_scheduled = 0;
window->redraw_needed = 0;
callback = wl_surface_frame(window->surface);
wl_callback_add_listener(callback, &listener, window);
}
void
window_schedule_redraw(struct window *window)
{
window->redraw_needed = 1;
if (!window->redraw_scheduled) {
window->redraw_task.run = idle_redraw;
display_defer(window->display, &window->redraw_task);