[client] ds: added new getFullscreen operation

As the window manager may change our mode to full screen without our
request we must ask the ds backend for the current state when we want to
toggle the mode.

client/displayservers/SDL/sdl.c

@@ -452,6 +452,11 @@ static void sdlSetFullscreen(bool fs)
   SDL_SetWindowFullscreen(sdl.window, fs ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
 }
 
+static bool sdlGetFullscreen(void)
+{
+  return (SDL_GetWindowFlags(sdl.window) & SDL_WINDOW_FULLSCREEN_DESKTOP) != 0;
+}
+
 struct LG_DisplayServerOps LGDS_SDL =
 {
   .probe               = sdlProbe,
@@ -482,6 +487,7 @@ struct LG_DisplayServerOps LGDS_SDL =
   .wait                = sdlWait,
   .setWindowSize       = sdlSetWindowSize,
   .setFullscreen       = sdlSetFullscreen,
+  .getFullscreen       = sdlGetFullscreen,
 
   /* SDL does not have clipboard support */
   .cbInit    = NULL,

client/displayservers/X11/x11.c

@@ -1026,6 +1026,11 @@ static void x11SetFullscreen(bool fs)
       SubstructureNotifyMask | SubstructureRedirectMask, &e);
 }
 
+static bool x11GetFullscreen(void)
+{
+  return x11.fullscreen;
+}
+
 static bool x11CBInit()
 {
   x11.aSelection    = XInternAtom(x11.display, "CLIPBOARD"  , False);
@@ -1380,6 +1385,7 @@ struct LG_DisplayServerOps LGDS_X11 =
   .wait               = x11Wait,
   .setWindowSize      = x11SetWindowSize,
   .setFullscreen      = x11SetFullscreen,
+  .getFullscreen      = x11GetFullscreen,
 
   .cbInit    = x11CBInit,
   .cbNotice  = x11CBNotice,

client/include/app.h

@@ -55,6 +55,7 @@ void app_handleFocusEvent(bool focused);
 void app_handleCloseEvent(void);
 
 void app_setFullscreen(bool fs);
+bool app_getFullscreen(void);
 bool app_getProp(LG_DSProperty prop, void * ret);
 
 EGLDisplay app_getEGLDisplay(void);

client/include/interface/displayserver.h

@@ -130,8 +130,9 @@ struct LG_DisplayServerOps
   /* wait for the specified time without blocking UI processing/event loops */
   void (*wait)(unsigned int time);
 
-  /* set the window dimensions */
+  /* get/set the window dimensions */
   void (*setWindowSize)(int x, int y);
+  bool (*getFullscreen)(void);
   void (*setFullscreen)(bool fs);
 
   /* clipboard support */
@@ -162,5 +163,6 @@ struct LG_DisplayServerOps
    (x)->uninhibitIdle      && \
    (x)->wait               && \
    (x)->setWindowSize      && \
-   (x)->setFullscreen)
+   (x)->setFullscreen      && \
+   (x)->getFullscreen)
 #endif

client/src/app.c

@@ -556,6 +556,11 @@ void app_setFullscreen(bool fs)
   g_state.ds->setFullscreen(fs);
 }
 
+bool app_getFullscreen(void)
+{
+  return g_state.ds->getFullscreen();
+}
+
 bool app_getProp(LG_DSProperty prop, void * ret)
 {
   return g_state.ds->getProp(prop, ret);

client/src/keybind.c

@@ -30,8 +30,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
 
 static void bind_fullscreen(int sc, void * opaque)
 {
-  g_params.fullscreen = !g_params.fullscreen;
+  app_setFullscreen(!app_getFullscreen());
-  app_setFullscreen(g_params.fullscreen);
 }
 
 static void bind_video(int sc, void * opaque)