Added gjt to CVS

1 files changed, 31 insertions, 0 deletions

diff --git a/java/gjt/ImageCanvas.java b/java/gjt/ImageCanvas.java
new file mode 100644
index 00000000000..49e3bc72f3f
--- /dev/null
+++ b/java/gjt/ImageCanvas.java
@@ -0,0 +1,31 @@
+package gjt;
+
+import java.awt.*;
+
+/**
+ * A Canvas that displays an image.<p>
+ *
+ * update() is overridden to call paint() directly, thus 
+ * bypassing the default implementation of update() which 
+ * erases the background of the canvas before calling paint().
+ * This eliminates nasty flashing.<p>
+ *
+ * @version 1.0, Apr 1 1996
+ * @author  David Geary
+ * @see     Util
+ */
+class ImageCanvas extends Canvas {
+    private Image image;
+
+    public ImageCanvas(Image image) {
+        this.image = image;
+        Util.waitForImage(this, image);
+        resize(image.getWidth(this), image.getHeight(this));
+    }
+    public void paint(Graphics g) {
+        g.drawImage(image, 0, 0, this);
+    }
+    public void update(Graphics g) {
+        paint(g);
+    }
+}