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Diffstat (limited to 'examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet48.java')
-rw-r--r-- | examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet48.java | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet48.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet48.java deleted file mode 100644 index f63ba7750e..0000000000 --- a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet48.java +++ /dev/null @@ -1,119 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2004 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; - -/* - * Canvas example snippet: scroll an image (flicker free, no double buffering) - * - * 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.layout.*; -import org.eclipse.swt.widgets.*; - -public class Snippet48 { - -public static void main (String [] args) { - Display display = new Display (); - Shell shell = new Shell (display); - shell.setLayout(new FillLayout()); - Image originalImage = null; - FileDialog dialog = new FileDialog (shell, SWT.OPEN); - dialog.setText ("Open an image file or cancel"); - String string = dialog.open (); - if (string != null) { - originalImage = new Image (display, string); - } - if (originalImage == null) { - int width = 150, height = 200; - originalImage = new Image (display, width, height); - GC gc = new GC (originalImage); - gc.fillRectangle (0, 0, width, height); - gc.drawLine (0, 0, width, height); - gc.drawLine (0, height, width, 0); - gc.drawText ("Default Image", 10, 10); - gc.dispose (); - } - final Image image = originalImage; - final Point origin = new Point (0, 0); - final Canvas canvas = new Canvas (shell, SWT.NO_BACKGROUND | - SWT.NO_REDRAW_RESIZE | SWT.V_SCROLL | SWT.H_SCROLL); - final ScrollBar hBar = canvas.getHorizontalBar (); - hBar.addListener (SWT.Selection, new Listener () { - public void handleEvent (Event e) { - int hSelection = hBar.getSelection (); - int destX = -hSelection - origin.x; - Rectangle rect = image.getBounds (); - canvas.scroll (destX, 0, 0, 0, rect.width, rect.height, false); - origin.x = -hSelection; - } - }); - final ScrollBar vBar = canvas.getVerticalBar (); - vBar.addListener (SWT.Selection, new Listener () { - public void handleEvent (Event e) { - int vSelection = vBar.getSelection (); - int destY = -vSelection - origin.y; - Rectangle rect = image.getBounds (); - canvas.scroll (0, destY, 0, 0, rect.width, rect.height, false); - origin.y = -vSelection; - } - }); - canvas.addListener (SWT.Resize, new Listener () { - public void handleEvent (Event e) { - Rectangle rect = image.getBounds (); - Rectangle client = canvas.getClientArea (); - hBar.setMaximum (rect.width); - vBar.setMaximum (rect.height); - hBar.setThumb (Math.min (rect.width, client.width)); - vBar.setThumb (Math.min (rect.height, client.height)); - int hPage = rect.width - client.width; - int vPage = rect.height - client.height; - int hSelection = hBar.getSelection (); - int vSelection = vBar.getSelection (); - if (hSelection >= hPage) { - if (hPage <= 0) hSelection = 0; - origin.x = -hSelection; - } - if (vSelection >= vPage) { - if (vPage <= 0) vSelection = 0; - origin.y = -vSelection; - } - canvas.redraw (); - } - }); - canvas.addListener (SWT.Paint, new Listener () { - public void handleEvent (Event e) { - GC gc = e.gc; - gc.drawImage (image, origin.x, origin.y); - Rectangle rect = image.getBounds (); - Rectangle client = canvas.getClientArea (); - int marginWidth = client.width - rect.width; - if (marginWidth > 0) { - gc.fillRectangle (rect.width, 0, marginWidth, client.height); - } - int marginHeight = client.height - rect.height; - if (marginHeight > 0) { - gc.fillRectangle (0, rect.height, client.width, marginHeight); - } - } - }); - shell.setSize (200, 150); - shell.open (); - while (!shell.isDisposed ()) { - if (!display.readAndDispatch ()) display.sleep (); - } - originalImage.dispose(); - display.dispose (); -} - -} |