Mega Code Archive
Draw a box around text
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/*******************************************************************************
* Copyright (c) 2000, 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.snippets;
/*
* StyledText snippet: Draw a box around text.
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Point;
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 TextAroundBox {
static String SEARCH_STRING = "box";
public static void main(String[] args) {
final Display display = new Display();
final Color RED = display.getSystemColor(SWT.COLOR_RED);
Shell shell = new Shell(display);
shell.setBounds(10, 10, 250, 250);
final StyledText text = new StyledText(shell, SWT.NONE);
text.setBounds(10, 10, 200, 200);
text.addListener(SWT.Paint, new Listener() {
public void handleEvent(Event event) {
String contents = text.getText();
int stringWidth = event.gc.stringExtent(SEARCH_STRING).x;
int lineHeight = text.getLineHeight();
event.gc.setForeground(RED);
int index = contents.indexOf(SEARCH_STRING);
while (index != -1) {
Point topLeft = text.getLocationAtOffset(index);
event.gc.drawRectangle(topLeft.x - 1, topLeft.y, stringWidth + 1, lineHeight - 1);
index = contents.indexOf(SEARCH_STRING, index + 1);
}
}
});
text
.setText("This demonstrates drawing a box\naround every occurrence of the word\nbox in the StyledText");
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
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