From http://www.jwz.org/xscreensaver/xscreensaver-5.35.tar.gz

[xscreensaver] / hacks / twang.c

diff --git a/hacks/twang.c b/hacks/twang.c
index dec8fbe14b8b5ca91f0fa51fddaedeebeff97203..4c434d0dff834a0308a57c3411fbeee3b3163585 100644 (file)
--- a/hacks/twang.c
+++ b/hacks/twang.c
@@ -107,13 +107,24 @@ struct state {
 static void
 grabImage_start (struct state *st, XWindowAttributes *xwa)
 {
+    Pixmap p;
+    GC gc;
+    XGCValues gcv;
     XFillRectangle (st->dpy, st->window, st->backgroundGC, 0, 0, 
                    st->windowWidth, st->windowHeight);
+
+    p = XCreatePixmap (st->dpy, st->window,
+                       xwa->width, xwa->height, xwa->depth);
+    gc = XCreateGC (st->dpy, st->window, 0, &gcv);
+    XCopyArea (st->dpy, st->window, p, gc, 0, 0,
+               xwa->width, xwa->height, 0, 0);
     st->backgroundImage = 
-       XGetImage (st->dpy, st->window, 0, 0, st->windowWidth, st->windowHeight,
+       XGetImage (st->dpy, p, 0, 0, st->windowWidth, st->windowHeight,
                   ~0L, ZPixmap);
+    XFreeGC (st->dpy, gc);
+    XFreePixmap (st->dpy, p);
 
-    st->start_time = time ((time_t) 0);
+    st->start_time = time ((time_t *) 0);
     st->img_loader = load_image_async_simple (0, xwa->screen, st->window,
                                               st->window, 0, 0);
 }
@@ -124,7 +135,7 @@ grabImage_done (struct state *st)
     XWindowAttributes xwa;
     XGetWindowAttributes (st->dpy, st->window, &xwa);
 
-    st->start_time = time ((time_t) 0);
+    st->start_time = time ((time_t *) 0);
     if (st->sourceImage) XDestroyImage (st->sourceImage);
     st->sourceImage = XGetImage (st->dpy, st->window, 0, 0, st->windowWidth, st->windowHeight,
                             ~0L, ZPixmap);
@@ -581,6 +592,7 @@ static void setupModel (struct state *st)
     leftX = (st->windowWidth - (st->columns * st->tileSize) + st->tileSize) / 2;
     topY = (st->windowHeight - (st->rows * st->tileSize) + st->tileSize) / 2;
 
+    if (st->tileCount < 1) st->tileCount = 1;
     st->tiles = calloc (st->tileCount, sizeof (Tile));
     st->sortedTiles = calloc (st->tileCount, sizeof (Tile *));
 
@@ -615,7 +627,7 @@ twang_draw (Display *dpy, Window window, void *closure)
     }
 
   if (!st->img_loader &&
-      st->start_time + st->duration < time ((time_t) 0)) {
+      st->start_time + st->duration < time ((time_t *) 0)) {
     XWindowAttributes xgwa;
     XGetWindowAttributes (st->dpy, st->window, &xgwa);
     grabImage_start (st, &xgwa);
@@ -638,6 +650,12 @@ twang_reshape (Display *dpy, Window window, void *closure,
 static Bool
 twang_event (Display *dpy, Window window, void *closure, XEvent *event)
 {
+  struct state *st = (struct state *) closure;
+  if (screenhack_event_helper (dpy, window, event))
+    {
+      st->start_time = 0;
+      return True;
+    }
   return False;
 }
 
@@ -767,8 +785,9 @@ static const char *twang_defaults [] = {
 #else
     "*useSHM: False",
 #endif
-#ifdef USE_IPHONE
+#ifdef HAVE_MOBILE
   "*ignoreRotation: True",
+  "*rotateImages:   True",
 #endif
     0
 };