Slowdown SDL while minimized

When SDL is invisible/minimized, there is no need to keep calling the
VGA refresh 33 times per second.  This patch reduces in that case the
rate to 2 times per second, which should be responsive enough for the
un-minimizing event.

(Samuel Thibault)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4050 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 9 insertions, 0 deletions

diff --git a/sdl.c b/sdl.c
index 05a394c784..431e527119 100644
--- a/sdl.c
+++ b/sdl.c
@@ -510,6 +510,15 @@ static void sdl_refresh(DisplayState *ds)
                 !ev->active.gain && !gui_fullscreen_initial_grab) {
                 sdl_grab_end();
             }
+            if (ev->active.state & SDL_APPACTIVE) {
+                if (ev->active.gain) {
+                    /* Back to default interval */
+                    ds->gui_timer_interval = 0;
+                } else {
+                    /* Sleeping interval */
+                    ds->gui_timer_interval = 500;
+                }
+            }
             break;
         default:
             break;