imageicons.ImageIconDecorator.java Source code

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Here is the source code for imageicons.ImageIconDecorator.java

Source

/*
 * Copyright (c) 2011 Andrejs Jermakovics.
 * 
 * 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
 */
package imageicons;

import java.util.LinkedList;

import org.eclipse.core.resources.IStorage;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jface.viewers.ILabelDecorator;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.widgets.Display;

public class ImageIconDecorator implements ILabelDecorator {

    private static final int MAX_ICON_SIZE = 16;
    private static final String PNG_EXT = "png";
    private static final String GIF_EXT = "gif";
    private static final String ICO_EXT = "ico";

    private LinkedList<Image> createdImages = new LinkedList<Image>();

    public ImageIconDecorator() {
    }

    @Override
    public Image decorateImage(Image image, Object element) {
        try {
            if (!(element instanceof IStorage))
                return null;

            IStorage stor = (IStorage) element;
            IPath path = stor.getFullPath();

            if (GIF_EXT.equalsIgnoreCase(path.getFileExtension())
                    || PNG_EXT.equalsIgnoreCase(path.getFileExtension())
                    || ICO_EXT.equalsIgnoreCase(path.getFileExtension())) {
                ImageData data = new ImageData(stor.getContents());

                if (data != null && data.width <= MAX_ICON_SIZE && data.height <= MAX_ICON_SIZE) {
                    Image img = new Image(Display.getCurrent(), data);
                    createdImages.add(img);
                    return img;
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
            ImageIconsPlugin.log(e);
        }

        return null;
    }

    @Override
    public String decorateText(String text, Object element) {
        return null;
    }

    @Override
    public void addListener(ILabelProviderListener listener) {

    }

    @Override
    public void dispose() {
        for (Image img : createdImages)
            img.dispose();
    }

    @Override
    public boolean isLabelProperty(Object element, String property) {
        return false;
    }

    @Override
    public void removeListener(ILabelProviderListener listener) {
    }

}