shithub: puzzles

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The Java console keeps showing up error reports due to being asked
to resize the puzzle to zero size. Ignore all such requests, in the
assumption that a more sensible resize will be along soon enough
(which does seem to happen, though I haven't debugged the NestedVM
front end hard enough to figure out why the bogus resizes happen in
the first place).

[originally from svn r8094]

--- a/PuzzleApplet.java

+++ b/PuzzleApplet.java

@@ -476,11 +476,13 @@

         }

         public void createBackBuffer(int w, int h, Color bg) {

-            backBuffer = new BufferedImage(w,h, BufferedImage.TYPE_3BYTE_BGR);

-            Graphics g = backBuffer.createGraphics();

-            g.setColor(bg);

-            g.fillRect(0, 0, w, h);

-            g.dispose();

+	    if (w > 0 && h > 0) {

+		backBuffer = new BufferedImage(w,h, BufferedImage.TYPE_3BYTE_BGR);

+		Graphics g = backBuffer.createGraphics();

+		g.setColor(bg);

+		g.fillRect(0, 0, w, h);

+		g.dispose();

+	    }

         }

         protected void paintComponent(Graphics g) {