de.codepitbull.resource.HomePage.java Source code

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Here is the source code for de.codepitbull.resource.HomePage.java

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/**
 * Copyright (C) 2011-2012 by Jochen Mader (pflanzenmoerder@gmail.com)
 * ==============================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package de.codepitbull.resource;

import de.codepitbull.resource.css.CssResources;
import org.apache.wicket.markup.html.IHeaderResponse;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.image.Image;
import org.apache.wicket.request.mapper.parameter.PageParameters;
import org.apache.wicket.request.resource.DynamicImageResource;
import org.apache.wicket.request.resource.PackageResourceReference;

import java.awt.*;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;

public class HomePage extends WebPage {
    private static final long serialVersionUID = 1L;

    public HomePage(final PageParameters parameters) {
        //Erzeugung eines dynamischen Bildes.
        //Der Browser wird das Bild aggressiv cachen, eine gute Gelegenheit
        //IResourceSettings.setCachingStrategy(IResourceCachingStrategy) auszuprobieren
        add(new Image("dynamicImage", new DynamicImageResource() {
            @Override
            protected byte[] getImageData(Attributes attributes) {
                BufferedImage image = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
                Graphics2D g2d = image.createGraphics();
                g2d.setColor(Color.red);
                g2d.fill(new Ellipse2D.Float(0, 0, 50, 50));
                g2d.setColor(Color.blue);
                g2d.fill(new Rectangle2D.Float(25, 25, 50, 50));
                g2d.dispose();
                return toImageData(image);
            }
        }));
    }

    @Override
    public void renderHead(IHeaderResponse response) {
        response.renderCSSReference(new PackageResourceReference(CssResources.class, "style.css"));
    }
}