From http://www.jwz.org/xscreensaver/xscreensaver-5.30.tar.gz

[xscreensaver] / hacks / maze.c

diff --git a/hacks/maze.c b/hacks/maze.c
index d963ad3e754ac48ef77664ab6eb86d409a66ac18..d5f4ef27a8873aeeecab731055969d0d9c18f39d 100644 (file)
--- a/hacks/maze.c
+++ b/hacks/maze.c
@@ -93,10 +93,11 @@
 #include  <stdio.h>
 
 /* #include  <X11/bitmaps/gray1> */
+/*
 #define gray1_width  2
 #define gray1_height 2
 static const char gray1_bits[] = { 0x01, 0x02 };
-
+*/
 
 #define MAX_MAZE_SIZE_X        1000
 #define MAX_MAZE_SIZE_Y        1000
@@ -210,12 +211,17 @@ set_maze_sizes (struct state *st, int width, int height)
 static void
 initialize_maze (struct state *st)
 {
+  int retry_count = 0;
   int i, j, wall;
   int logow = 1 + st->logo_width / st->grid_width;
   int logoh = 1 + st->logo_height / st->grid_height;
   
  AGAIN:
 
+  /* This can happen if the window is really small. Let's not sweat it. */
+  if (++retry_count > 100) return;
+
+
   /* initialize all squares */
   for ( i=0; i<st->maze_size_x; i++) {
     for ( j=0; j<st->maze_size_y; j++) {
@@ -865,8 +871,10 @@ static int
 backup (struct state *st)                                          /* back up a move */
 {
   st->sqnum--;
-  st->cur_sq_x = st->move_list[st->sqnum].x;
-  st->cur_sq_y = st->move_list[st->sqnum].y;
+  if (st->sqnum >= 0) {
+    st->cur_sq_x = st->move_list[st->sqnum].x;
+    st->cur_sq_y = st->move_list[st->sqnum].y;
+  }
   return ( st->sqnum );
 }
 
@@ -1472,7 +1480,7 @@ maze_init (Display *dpy_arg, Window window_arg)
     st->logo_map = xscreensaver_logo (xgwa.screen, xgwa.visual, st->window,
                                       xgwa.colormap, bg,
                                       &pixels, &npixels, &logo_mask,
-                                      xgwa.width > 800);
+                                      xgwa.width > 800 || xgwa.height > 800);
     if (logo_mask) {
       XSetClipMask (st->dpy, st->logo_gc, logo_mask);
       XFreePixmap (st->dpy, logo_mask);
@@ -1583,6 +1591,9 @@ maze_draw (Display *dpy, Window window, void *closure)
         st->stop = 0;
         st->state = 1;
 
+        if (st->solve_state && st->solve_state->running)
+          st->solve_state->running = 0;
+
         st->sync_p = ((random() % 4) != 0);
 
         size = get_integer_resource (st->dpy, "gridSize", "Dimension");
@@ -1603,9 +1614,8 @@ static Bool
 maze_event (Display *dpy, Window window, void *closure, XEvent *event)
 {
   struct state *st = (struct state *) closure;
-  switch (event->type) 
+  if (event->type == ButtonPress)
     {
-    case ButtonPress:
       switch (event->xbutton.button) 
         {
         case 2:
@@ -1622,14 +1632,17 @@ maze_event (Display *dpy, Window window, void *closure, XEvent *event)
           st->stop = 0 ;
           return True;
         }
-      break;
-
-    case Expose:
+    }
+  else if (event->type == Expose)
+    {
       st->restart = 1;
-      break;
-
-    default:
-      break;
+      return False;
+    }
+  else if (screenhack_event_helper (dpy, window, event))
+    {
+      st->restart = 1 ;
+      st->stop = 0 ;
+      return True;
     }
   return False;
 }