- added Canvas.java

svn: r499

collects/htdch/draw/Canvas.java

@@ -0,0 +1,28 @@
+package draw;
+        
+public class Canvas {
+
+     public native boolean start(int width, int height);
+
+     public native boolean stop();
+
+     public native boolean drawCircle(Posn p, int r, Color c);
+
+     public native boolean drawDisk(Posn p, int r, Color c);
+
+     public native boolean drawRect(Posn p, int width, int height, Color c);
+
+     public native boolean drawLine(Posn p0, Posn p1, Color c);
+
+     public native boolean drawString(Posn p, String s);
+
+     public native boolean clearCircle(Posn p, int r, Color c);
+
+     public native boolean clearDisk(Posn p, int r, Color c);
+
+     public native boolean clearRect(Posn p, int width, int height, Color c);
+
+     public native boolean clearLine(Posn p0, Posn p1, Color c);
+
+    // public native boolean sleepForAWhile(int s);
+}