add image scaling snippet

1 files changed, 49 insertions, 0 deletions

diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet355.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet355.java
new file mode 100644
index 0000000000..d7041cb66b
--- /dev/null
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet355.java
@@ -0,0 +1,49 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.swt.snippets;
+
+/*
+ * draw an image and scale it to half size and double size
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ */
+import org.eclipse.swt.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.widgets.*;
+
+public class Snippet355 {
+	public static void main (String [] args) {
+		Display display = new Display ();
+		Shell shell = new Shell (display, SWT.SHELL_TRIM);
+		final Image image = display.getSystemImage (SWT.ICON_QUESTION);
+		shell.addListener (SWT.Paint, new Listener () {
+			public void handleEvent (Event e) {
+				Rectangle rect = image.getBounds ();
+				int width = rect.width;
+				int height = rect.height;
+				GC gc = e.gc;
+				int x = 10, y = 10;
+				gc.drawImage (image, 0, 0, width, height, x, y, width, height);
+				gc.drawImage (image, 0, 0, width, height, x + width, y, (int)Math.round(width * 0.5), (int)Math.round(height * 0.5));
+				gc.drawImage (image, 0, 0, width, height, x+width+(int)Math.round(width * 0.5), y, width * 2, height * 2);
+			}
+		});
+		shell.setSize (600, 400);
+		shell.open ();
+		while (!shell.isDisposed ()) {
+			if (!display.readAndDispatch ())
+				display.sleep ();
+		}
+		display.dispose ();
+	}
+}
+