/*******************************************************************************
 * Copyright (c) 2003, 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.gef.examples.flow.figures;

import org.eclipse.draw2d.ColorConstants;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.Label;
import org.eclipse.draw2d.geometry.Insets;
import org.eclipse.draw2d.geometry.Rectangle;

/**
 * A customized Label for SimpleActivities. Primary selection is
 * denoted by highlight and focus rectangle. Normal selection is denoted by highlight
 * only.
 * 
 * @author Daniel Lee
 */
public class SimpleActivityLabel extends Label {

private boolean selected;
private boolean hasFocus;

private Rectangle getSelectionRectangle() {
	Rectangle bounds = getTextBounds();
	bounds.expand(new Insets(2,2,0,0));
	translateToParent(bounds);
	bounds.intersect(getBounds());
	return bounds;
}

/**
 * @see org.eclipse.draw2d.Label#paintFigure(org.eclipse.draw2d.Graphics)
 */
protected void paintFigure(Graphics graphics) {
	if (selected) {
		graphics.pushState();
		graphics.setBackgroundColor(ColorConstants.menuBackgroundSelected);
		graphics.fillRectangle(getSelectionRectangle());
		graphics.popState();
		graphics.setForegroundColor(ColorConstants.white);
	}
	if (hasFocus) {
		graphics.pushState();
		graphics.setXORMode(true);
		graphics.setForegroundColor(ColorConstants.menuBackgroundSelected);
		graphics.setBackgroundColor(ColorConstants.white);
		graphics.drawFocus(getSelectionRectangle().resize(-1, -1));
		graphics.popState();
	}
	super.paintFigure(graphics);
}

/**
 * Sets the selection state of this SimpleActivityLabel
 * @param b true will cause the label to appear selected
 */
public void setSelected(boolean b) {
	selected = b;
	repaint();
}

/**
 * Sets the focus state of this SimpleActivityLabel
 * @param b true will cause a focus rectangle to be drawn around the text of the Label
 */
public void setFocus(boolean b) {
	hasFocus = b;
	repaint();
}

}