| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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; |
| |
| /* |
| * TextLayout example snippet: using the GlyphMetrics to embedded images in |
| * a TextLayout. |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| * |
| * @since 3.2 |
| */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.widgets.*; |
| import org.eclipse.swt.graphics.*; |
| |
| |
| public class Snippet205 { |
| |
| public static void main(String[] args) { |
| Display display = new Display(); |
| final Shell shell = new Shell(display, SWT.SHELL_TRIM | SWT.DOUBLE_BUFFERED); |
| shell.setText("Embedding objects in text"); |
| final Image[] images = {new Image(display, 32, 32), new Image(display, 20, 40), new Image(display, 40, 20)}; |
| int[] colors = {SWT.COLOR_BLUE, SWT.COLOR_MAGENTA, SWT.COLOR_GREEN}; |
| for (int i = 0; i < images.length; i++) { |
| GC gc = new GC(images[i]); |
| gc.setBackground(display.getSystemColor(colors[i])); |
| gc.fillRectangle(images[i].getBounds()); |
| gc.dispose(); |
| } |
| |
| final Button button = new Button(shell, SWT.PUSH); |
| button.setText("Button"); |
| button.pack(); |
| String text = "Here is some text with a blue image \uFFFC, a magenta image \uFFFC, a green image \uFFFC, and a button: \uFFFC."; |
| final int[] imageOffsets = {36, 55, 72}; |
| final TextLayout layout = new TextLayout(display); |
| layout.setText(text); |
| for (int i = 0; i < images.length; i++) { |
| Rectangle bounds = images[i].getBounds(); |
| TextStyle imageStyle = new TextStyle(null, null, null); |
| imageStyle.metrics = new GlyphMetrics(bounds.height, 0, bounds.width); |
| layout.setStyle(imageStyle, imageOffsets[i], imageOffsets[i]); |
| } |
| Rectangle bounds = button.getBounds(); |
| TextStyle buttonStyle = new TextStyle(null, null, null); |
| buttonStyle.metrics = new GlyphMetrics(bounds.height, 0, bounds.width); |
| final int buttonOffset = text.length() - 2; |
| layout.setStyle(buttonStyle, buttonOffset, buttonOffset); |
| |
| shell.addListener(SWT.Paint, new Listener() { |
| public void handleEvent(Event event) { |
| GC gc = event.gc; |
| Point margin = new Point(10, 10); |
| layout.setWidth(shell.getClientArea().width - 2 * margin.x); |
| layout.draw(event.gc, margin.x, margin.y); |
| for (int i = 0; i < images.length; i++) { |
| int offset = imageOffsets[i]; |
| int lineIndex = layout.getLineIndex(offset); |
| FontMetrics lineMetrics = layout.getLineMetrics(lineIndex); |
| Point point = layout.getLocation(offset, false); |
| GlyphMetrics glyphMetrics = layout.getStyle(offset).metrics; |
| gc.drawImage(images[i], point.x + margin.x, point.y + margin.y + lineMetrics.getAscent() - glyphMetrics.ascent); |
| } |
| int lineIndex = layout.getLineIndex(buttonOffset); |
| FontMetrics lineMetrics = layout.getLineMetrics(lineIndex); |
| Point point = layout.getLocation(buttonOffset, false); |
| GlyphMetrics glyphMetrics = layout.getStyle(buttonOffset).metrics; |
| button.setLocation(point.x + margin.x, point.y + margin.y + lineMetrics.getAscent() - glyphMetrics.ascent); |
| } |
| }); |
| |
| shell.open(); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) display.sleep(); |
| } |
| layout.dispose(); |
| for (int i = 0; i < images.length; i++) { |
| images[i].dispose(); |
| } |
| display.dispose(); |
| } |
| } |