diff options
Diffstat (limited to 'ui/sdl.c')
| -rw-r--r-- | ui/sdl.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/ui/sdl.c b/ui/sdl.c index c837436096..f215fe140d 100644 --- a/ui/sdl.c +++ b/ui/sdl.c @@ -60,6 +60,11 @@ static SDL_Cursor *guest_sprite = NULL; static SDL_PixelFormat host_format; static int scaling_active = 0; static Notifier mouse_mode_notifier; +static int idle_counter; + +#define SDL_REFRESH_INTERVAL_BUSY 10 +#define SDL_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \ + / SDL_REFRESH_INTERVAL_BUSY + 1) #if 0 #define DEBUG_SDL @@ -802,6 +807,7 @@ static void handle_activation(SDL_Event *ev) static void sdl_refresh(DisplayChangeListener *dcl) { SDL_Event ev1, *ev = &ev1; + int idle = 1; if (last_vm_running != runstate_is_running()) { last_vm_running = runstate_is_running(); @@ -817,9 +823,11 @@ static void sdl_refresh(DisplayChangeListener *dcl) sdl_update(dcl, 0, 0, real_screen->w, real_screen->h); break; case SDL_KEYDOWN: + idle = 0; handle_keydown(ev); break; case SDL_KEYUP: + idle = 0; handle_keyup(ev); break; case SDL_QUIT: @@ -829,10 +837,12 @@ static void sdl_refresh(DisplayChangeListener *dcl) } break; case SDL_MOUSEMOTION: + idle = 0; handle_mousemotion(ev); break; case SDL_MOUSEBUTTONDOWN: case SDL_MOUSEBUTTONUP: + idle = 0; handle_mousebutton(ev); break; case SDL_ACTIVEEVENT: @@ -847,6 +857,18 @@ static void sdl_refresh(DisplayChangeListener *dcl) break; } } + + if (idle) { + if (idle_counter < SDL_MAX_IDLE_COUNT) { + idle_counter++; + if (idle_counter >= SDL_MAX_IDLE_COUNT) { + dcl->update_interval = GUI_REFRESH_INTERVAL_DEFAULT; + } + } + } else { + idle_counter = 0; + dcl->update_interval = SDL_REFRESH_INTERVAL_BUSY; + } } static void sdl_mouse_warp(DisplayChangeListener *dcl, |