bundles/org.eclipse.rap.gef/src/org/eclipse/gef/handles/CornerTriangleBorder.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.gef.handles;

import org.eclipse.swt.graphics.Color;

import org.eclipse.draw2d.AbstractBorder;
import org.eclipse.draw2d.Border;
import org.eclipse.draw2d.ColorConstants;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Insets;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.PointList;
import org.eclipse.draw2d.geometry.Rectangle;

/**
 * A {@link Border} with a triangle in each corner.
 * 
 * @deprecated this class is no longer used
 */
public final class CornerTriangleBorder extends AbstractBorder {

	private boolean isPrimary = true;

	/**
	 * Creates a new <code>CornerTriangleBorder</code>.
	 * 
	 * @param isPrimary
	 *            Determines this border's color.
	 */
	public CornerTriangleBorder(boolean isPrimary) {
		super();
		this.isPrimary = isPrimary;
	}

	/**
	 * Returns <code>true</code>.
	 * 
	 * @see org.eclipse.draw2d.Border#isOpaque()
	 */
	public boolean isOpaque() {
		return true;
	}

	/**
	 * @see org.eclipse.draw2d.Border#getInsets(org.eclipse.draw2d.IFigure)
	 */
	public Insets getInsets(IFigure figure) {
		return new Insets(1);
	}

	/**
	 * Paints the border. If this is a border for the primary selection, it's
	 * painted black. Otherwise, it's painted white.
	 * 
	 * @param figure
	 *            The <code>IFigure</code> this border will be painted on
	 * @param graphics
	 *            The <code>Graphics</code>.
	 * @param insets
	 *            The <code>Insets</code>.
	 */
	public void paint(IFigure figure, Graphics graphics, Insets insets) {
		// Don't paint the center of the figure.
		int width = 1, edgeSize;
		Rectangle rect = tempRect;
		tempRect.setBounds(getPaintRectangle(figure, insets));
		rect.width--;
		rect.height--;
		rect.shrink(width / 2, width / 2);
		graphics.setLineWidth(width);

		// Draw the primary handles one pixel larger than the secondary
		// handles. Primary which paints as black with white border looks
		// smaller than secondary which paints as white with black border.
		edgeSize = isPrimary() ? 7 : 6;

		// Top left corner
		PointList pList = new PointList();
		pList.addPoint(rect.getTopLeft());
		pList.addPoint(new Point(rect.x, rect.y + edgeSize));
		pList.addPoint(new Point(rect.x + edgeSize, rect.y));

		graphics.setBackgroundColor(getFillColor());
		graphics.fillPolygon(pList);
		graphics.setForegroundColor(getBorderColor());
		graphics.drawPolygon(pList);

		// Bottom left corner
		pList = new PointList();
		pList.addPoint(rect.getBottomLeft());
		pList.addPoint(new Point((rect.x + edgeSize), (rect.y + rect.height)));
		pList.addPoint(new Point(rect.x, (rect.y + rect.height - edgeSize)));

		graphics.setBackgroundColor(getFillColor());
		graphics.fillPolygon(pList);
		graphics.setForegroundColor(getBorderColor());
		graphics.drawPolygon(pList);

		// Top right corner
		pList = new PointList();
		pList.addPoint(rect.getTopRight());
		pList.addPoint(new Point(((rect.x + rect.width) - edgeSize), rect.y));
		pList.addPoint(new Point((rect.x + rect.width), (rect.y + edgeSize)));

		graphics.setBackgroundColor(getFillColor());
		graphics.fillPolygon(pList);
		graphics.setForegroundColor(getBorderColor());
		graphics.drawPolygon(pList);

		// Bottom right corner
		pList = new PointList();
		pList.addPoint(rect.getBottomRight());
		pList.addPoint(new Point(((rect.x + rect.width) - edgeSize),
				(rect.y + rect.height)));
		pList.addPoint(new Point((rect.x + rect.width),
				(rect.y + rect.height - edgeSize)));

		graphics.setBackgroundColor(getFillColor());
		graphics.fillPolygon(pList);
		graphics.setForegroundColor(getBorderColor());
		graphics.drawPolygon(pList);
	}

	/**
	 * Returns the outline color based on what is returned by
	 * {@link #isPrimary()}.
	 * 
	 * @return The outline color.
	 */
	protected Color getBorderColor() {
		return (isPrimary()) ? ColorConstants.white() : ColorConstants.black();
	}

	/**
	 * Returns the fill color based on what is returned by {@link #isPrimary()}.
	 * 
	 * @return The fill color.
	 */
	protected Color getFillColor() {
		return (isPrimary()) ? ColorConstants.black() : ColorConstants.white();
	}

	/**
	 * Returns <code>true</code> if this border is for the primary object in the
	 * selection. Otherwise, returns <code>false</code>.
	 * 
	 * @return Whether or not this is a primary border.
	 */
	public boolean isPrimary() {
		return isPrimary;
	}

	/**
	 * Sets this border as primary if <code>isPrimary</code> is
	 * <code>true</code>.
	 * 
	 * @param isPrimary
	 *            True if this border is for the primary object in the
	 *            selection.
	 */
	public void setPrimary(boolean isPrimary) {
		this.isPrimary = isPrimary;
	}

}