/**
* License Agreement.
*
* JBoss RichFaces - Ajax4jsf Component Library
*
* Copyright (C) 2007 Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.richfaces.renderkit.html.images;
import static org.richfaces.renderkit.html.images.ColorUtils.adjustLightness;
import static org.richfaces.renderkit.html.images.ColorUtils.overwriteAlpha;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import javax.faces.context.FacesContext;
import org.ajax4jsf.resource.AnimationResource;
import org.ajax4jsf.resource.ImageRenderer;
import org.ajax4jsf.resource.InternetResourceBase;
import org.ajax4jsf.resource.Java2Dresource;
import org.ajax4jsf.resource.ResourceContext;
import org.ajax4jsf.util.HtmlColor;
import org.ajax4jsf.util.Zipper2;
import org.richfaces.skin.SkinFactory;
public class ProgressBarAnimatedBg extends AnimationResource {
private static int NUMBER_OF_FRAMES = 12;
private BufferedImage mainStage;
private Dimension frameSize = new Dimension(24, 48);
private Color progressbarBasicColor;
private Color progressbarSpiralColor;
private Color progressbarBackgroundColor;
private Color progressbarShadowStartColor;
private Color progressbarShadowEndColor;
@Override
protected Dimension getFrameSize(ResourceContext resourceContext) {
return frameSize;
}
/**
* @see Java2Dresource#isCacheable(ResourceContext)
*/
public boolean isCacheable(ResourceContext ctx) {
return true;
}
@Override
protected int getRepeat() {
return 0;
}
@Override
protected int getNumberOfFrames() {
return NUMBER_OF_FRAMES;
}
@Override
protected void paint(ResourceContext context, Graphics2D g2d, int frameIndex) {
restoreData(context);
mainStage = createMainStage(context);
BufferedImage frame = mainStage.getSubimage(0, 48 - frameIndex * 2, frameSize.width, frameSize.height);
g2d.drawImage(frame, null, null);
// paint a shadow in the form of semi-transparent gradient
g2d.setPaint(new GradientPaint(0, 0, progressbarShadowStartColor, 0, 7, progressbarShadowEndColor));
g2d.fillRect(0, 0, frameSize.width, 7);
}
/**
* Creates a main stage for progress bar background.
*
* @param context
* resource context
* @return a <code>BufferedImage</code> object
*/
private BufferedImage createMainStage(ResourceContext ctx) {
progressbarBackgroundColor = progressbarBasicColor;
progressbarSpiralColor = adjustLightness(progressbarBasicColor, 0.2f);
progressbarShadowStartColor = overwriteAlpha(adjustLightness(progressbarBasicColor, 0.7f), 0.6f);
progressbarShadowEndColor = overwriteAlpha(adjustLightness(progressbarBasicColor, 0.3f), 0.6f);
BufferedImage retVal = ((ImageRenderer) getRenderer(ctx)).createImage(frameSize.width, frameSize.height * 2);
Graphics g = retVal.getGraphics();
g.setColor(progressbarBackgroundColor);
g.fillRect(0, 0, frameSize.width, frameSize.height * 2);
g.setColor(progressbarSpiralColor);
for (int k : new int[] { -24, 0, 24, 48, 72 }) {
g.fillPolygon(new int[] { 0, 24, 24, 0 }, new int[] { 24 + k, k, 12 + k, 36 + k }, 4);
}
g.dispose();
return retVal;
}
/**
* @see InternetResourceBase#getDataToStore(FacesContext, Object)
*/
protected Object getDataToStore(FacesContext context, Object data) {
byte[] retVal = new byte[3 * 1];
progressbarBasicColor = getColorValueParameter(context, "selectControlColor");
new Zipper2(retVal).addColor(progressbarBasicColor);
return retVal;
}
/**
* @see InternetResourceBase#deserializeData(byte[])
*/
protected Object deserializeData(byte[] objectArray) {
if (objectArray != null) {
Zipper2 zipper2 = new Zipper2(objectArray);
progressbarBasicColor = zipper2.nextColor();
}
return objectArray;
}
private Color getColorValueParameter(FacesContext context, String name) {
Color retVal = null;
String color = (String) SkinFactory.getInstance().getSkin(context).getParameter(context, name);
if (null == color || "".equals(color.trim())) {
color = (String) SkinFactory.getInstance().getDefaultSkin(context).getParameter(context, name);
}
if (null != color && !"".equals(color.trim())) {
retVal = HtmlColor.decode(color);
}
return retVal;
}
}