/*
 * Copyright (c) 2005-2008 Substance Kirill Grouchnikov. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of Substance Kirill Grouchnikov nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
package test.check;

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Component;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;

import org.pushingpixels.substance.api.ComponentState;
import org.pushingpixels.substance.api.SubstanceLookAndFeel;
import org.pushingpixels.substance.api.SubstanceSkin;
import org.pushingpixels.substance.api.watermark.SubstanceWatermark;

/**
 * Implementation of
 * {@link org.pushingpixels.substance.api.watermark.SubstanceWatermark}, drawing
 * diagonal gradient.
 * 
 * @author Kirill Grouchnikov
 */
public class SubstanceDiagonalGradientWatermark implements SubstanceWatermark {
	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.pushingpixels.substance.watermark.SubstanceWatermark#drawWatermarkImage(java
	 * .awt.Graphics, int, int, int, int)
	 */
	public void drawWatermarkImage(Graphics g, Component c, int x, int y,
			int width, int height) {
		if (c != null)
			if (!c.isDisplayable() || !c.isShowing())
				return;

		Component parent = c;
		if (parent != null) {
			while (parent.getParent() != null)
				parent = parent.getParent();
		}
		if (!parent.isShowing())
			return;

		int dx = (parent != null) ? c.getLocationOnScreen().x
				- parent.getLocationOnScreen().x : 0;
		int dy = (parent != null) ? c.getLocationOnScreen().y
				- parent.getLocationOnScreen().y : 0;
		int dw = (parent != null) ? parent.getWidth() : width;
		int dh = (parent != null) ? parent.getHeight() : height;

		Graphics2D graphics = (Graphics2D) g.create();
		graphics.setPaint(new GradientPaint(x - dx, y - dy, Color.gray, x - dx
				+ dw, y - dy + dh, SubstanceLookAndFeel.getCurrentSkin(c)
				.getColorScheme(c, ComponentState.ENABLED).getMidColor()));
		graphics.setComposite(AlphaComposite.getInstance(
				AlphaComposite.SRC_OVER, 0.8f));
		graphics.fillRect(x, y, width, height);

		graphics.dispose();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.pushingpixels.substance.watermark.SubstanceWatermark#updateWatermarkImage
	 * (org.pushingpixels.substance.skin.SubstanceSkin)
	 */
	public boolean updateWatermarkImage(SubstanceSkin skin) {
		return true;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.pushingpixels.substance.api.watermark.SubstanceWatermark#previewWatermark
	 * (java.awt.Graphics, org.pushingpixels.substance.api.SubstanceSkin, int, int, int,
	 * int)
	 */
	@Override
	public void previewWatermark(Graphics g, SubstanceSkin skin, int x, int y,
			int width, int height) {
		this.drawWatermarkImage(g, null, x, y, width, height);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.pushingpixels.substance.watermark.SubstanceWatermark#getDisplayName()
	 */
	public String getDisplayName() {
		return "Diagonal Gradient";
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.pushingpixels.substance.watermark.SubstanceWatermark#dispose()
	 */
	public void dispose() {
	}
}