bundles/org.eclipse.rap.draw2d/src/org/eclipse/draw2d/RoundedRectangle.java

/*******************************************************************************
 * Copyright (c) 2000, 2010 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.draw2d;

import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Rectangle;

/**
 * Draws a Rectangle whose corners are rounded in appearance. The size of the
 * rectangle is determined by the bounds set to it.
 */
public class RoundedRectangle extends Shape {

	/**
	 * The width and height radii applied to each corner.
	 * 
	 * @deprecated Use {@link #getCornerDimensions()} instead.
	 */
	protected Dimension corner = new Dimension(8, 8);

	/**
	 * Constructs a round cornered rectangle.
	 */
	public RoundedRectangle() {
	}

	/**
	 * @see Shape#fillShape(Graphics)
	 */
	protected void fillShape(Graphics graphics) {
		graphics.fillRoundRectangle(getBounds(), corner.width, corner.height);
	}

	/**
	 * @see Shape#outlineShape(Graphics)
	 */
	protected void outlineShape(Graphics graphics) {
		float lineInset = Math.max(1.0f, getLineWidthFloat()) / 2.0f;
		int inset1 = (int) Math.floor(lineInset);
		int inset2 = (int) Math.ceil(lineInset);

		Rectangle r = Rectangle.getSINGLETON().setBounds(getBounds());
		r.x += inset1;
		r.y += inset1;
		r.width -= inset1 + inset2;
		r.height -= inset1 + inset2;

		graphics.drawRoundRectangle(r,
				Math.max(0, corner.width - (int) lineInset),
				Math.max(0, corner.height - (int) lineInset));
	}

	/**
	 * Sets the dimensions of each corner. This will form the radii of the arcs
	 * which form the corners.
	 * 
	 * @param d
	 *            the dimensions of the corner
	 * @since 2.0
	 */
	public void setCornerDimensions(Dimension d) {
		corner.width = d.width;
		corner.height = d.height;
	}

	/**
	 * Returns the dimensions used for each corner.
	 * 
	 * @return the dimensions of the corner.
	 * @since 3.7
	 */
	public Dimension getCornerDimensions() {
		return corner.getCopy();
	}
}