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/*******************************************************************************
* 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;
/*
* SWT StyledText snippet: use gradient background.
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* @since 3.2
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
public class StyledTextGradientBackground {
static String text = "Plans do not materialize out of nowhere, nor are they entirely static. To ensure the planning process is "
+ "transparent and open to the entire Eclipse community, we (the Eclipse PMC) post plans in an embryonic "
+ "form and revise them throughout the release cycle. \n"
+ "The first part of the plan deals with the important matters of release deliverables, release milestones, target "
+ "operating environments, and release-to-release compatibility. These are all things that need to be clear for "
+ "any release, even if no features were to change. \n";
static Image oldImage;
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
final StyledText styledText = new StyledText(shell, SWT.WRAP | SWT.BORDER);
styledText.setText(text);
FontData data = display.getSystemFont().getFontData()[0];
Font font = new Font(display, data.getName(), 16, SWT.BOLD);
styledText.setFont(font);
styledText.setForeground(display.getSystemColor(SWT.COLOR_BLUE));
styledText.addListener(SWT.Resize, new Listener() {
public void handleEvent(Event event) {
Rectangle rect = styledText.getClientArea();
Image newImage = new Image(display, 1, Math.max(1, rect.height));
GC gc = new GC(newImage);
gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE));
gc.setBackground(display.getSystemColor(SWT.COLOR_YELLOW));
gc.fillGradientRectangle(rect.x, rect.y, 1, rect.height, true);
gc.dispose();
styledText.setBackgroundImage(newImage);
if (oldImage != null)
oldImage.dispose();
oldImage = newImage;
}
});
shell.setSize(700, 400);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
if (oldImage != null)
oldImage.dispose();
font.dispose();
display.dispose();
}
}
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