/*******************************************************************************
* Copyright (c) 2007 Exadel, Inc. and Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Exadel, Inc. and Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.model.ui.editors.dnd;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.widgets.Composite;
/**
* @author Jeremy
*
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
public class FreeCaretStyledText extends StyledText implements PaintListener {
public FreeCaretStyledText(Composite parent, int style) {
super(parent, style);
super.addPaintListener(this);
}
public void dispose () {
super.removePaintListener(this);
}
int fX = -1;
int fY = -1;
boolean fEnabled = false;
public void enableFreeCaret(boolean set) {
this.fEnabled = set;
if (!set) redraw();
}
public void myRedraw(int x, int y) {
this.fX = x;
this.fY = y;
if (this.fEnabled) {
redraw();
}
}
/* (non-Javadoc)
* @see org.eclipse.swt.events.PaintListener#paintControl(org.eclipse.swt.events.PaintEvent)
*/
public void paintControl(PaintEvent e) {
if (!this.fEnabled) return;
if (fX == -1 || fY == -1) return;
GC gc = e.gc;
gc.setForeground(gc.getBackground());
int lh = getLineHeight();
if (lh <= 0) lh = 3;
gc.setXORMode(true);
gc.setLineStyle(SWT.LINE_DOT);
for (int i = 0; i < lh; i += 2) gc.drawLine(fX, fY + i, fX, fY + i);
}
}