| /******************************************************************************* |
| * Copyright (c) 2006 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.examples.graphics; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| |
| /** |
| * This tab demonstrates how an image can be flipped in various fashions. |
| */ |
| public class ImageFlipTab extends GraphicsTab { |
| |
| public ImageFlipTab(GraphicsExample example) { |
| super(example); |
| } |
| |
| public String getCategory() { |
| return GraphicsExample.getResourceString("Image"); //$NON-NLS-1$ |
| } |
| |
| public String getText() { |
| return GraphicsExample.getResourceString("Flip"); //$NON-NLS-1$ |
| } |
| |
| public String getDescription() { |
| return GraphicsExample.getResourceString("FlipDescription"); //$NON-NLS-1$ |
| } |
| |
| public void paint(GC gc, int width, int height) { |
| if (!example.checkAdvancedGraphics()) return; |
| Device device = gc.getDevice(); |
| |
| Image image = GraphicsExample.loadImage(device, GraphicsExample.class, "houses.png"); |
| Rectangle bounds = image.getBounds(); |
| |
| // top |
| Transform transform = new Transform(device); |
| transform.translate((width-bounds.width)/2, (height-bounds.height)/2); |
| transform.scale(1, -1); |
| gc.setTransform(transform); |
| |
| // draw the original image |
| gc.drawImage(image, 0, 0); |
| |
| transform.dispose(); |
| |
| // bottom |
| transform = new Transform(device); |
| transform.translate((width-bounds.width)/2, 2*bounds.height + (height-bounds.height)/2); |
| transform.scale(1, -1); |
| gc.setTransform(transform); |
| |
| // draw the original image |
| gc.drawImage(image, 0, 0); |
| |
| transform.dispose(); |
| |
| // left |
| transform = new Transform(device); |
| transform.translate((width-bounds.width)/2, (height-bounds.height)/2); |
| transform.scale(-1, 1); |
| gc.setTransform(transform); |
| |
| // draw the original image |
| gc.drawImage(image, 0, 0); |
| |
| transform.dispose(); |
| |
| // right |
| transform = new Transform(device); |
| transform.translate(2*bounds.width + (width-bounds.width)/2, (height-bounds.height)/2); |
| transform.scale(-1, 1); |
| gc.setTransform(transform); |
| |
| // draw the original image |
| gc.drawImage(image, 0, 0); |
| |
| transform.dispose(); |
| |
| gc.setTransform(null); |
| gc.drawImage(image, (width-bounds.width)/2, (height-bounds.height)/2); |
| image.dispose(); |
| } |
| |
| /** |
| * Returns the name of a valid font for the host platform. |
| */ |
| static String getPlatformFont() { |
| if(SWT.getPlatform() == "win32") { |
| return "Arial"; |
| } else if (SWT.getPlatform() == "motif") { |
| return "Helvetica"; |
| } else if (SWT.getPlatform() == "gtk") { |
| return "Baekmuk Batang"; |
| } else if (SWT.getPlatform() == "carbon") { |
| return "Arial"; |
| } else { // photon, etc ... |
| return "Verdana"; |
| } |
| } |
| } |
| |