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// $Id$
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/**
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* Copyright (C) 2017 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.editor.view.media;
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import java.io.InputStream;
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import java.net.URI;
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import java.util.List;
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import java.util.Set;
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import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider;
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import org.eclipse.jface.viewers.LabelProvider;
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import org.eclipse.jface.viewers.StyledString;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.graphics.GC;
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import org.eclipse.swt.graphics.Image;
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import org.eclipse.swt.widgets.Display;
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import eu.etaxonomy.cdm.common.UriUtils;
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import eu.etaxonomy.cdm.model.common.IdentifiableEntity;
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import eu.etaxonomy.cdm.model.media.Media;
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import eu.etaxonomy.cdm.model.media.MediaRepresentation;
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import eu.etaxonomy.cdm.model.media.MediaRepresentationPart;
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import eu.etaxonomy.cdm.model.media.MediaUtils;
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import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
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/**
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* @author k.luther
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* @date 11.10.2017
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*
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*/
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public class MediaViewLabelProvider extends LabelProvider implements IStyledLabelProvider {
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/**
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* {@inheritDoc}
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*/
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@Override
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public String getText(Object element) {
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return getStyledText(element).getString();
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}
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@Override
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public StyledString getStyledText(Object element) {
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if (element instanceof IdentifiableEntity) {
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IdentifiableEntity<?> identifiableEntity= (IdentifiableEntity<?>) element;
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if(identifiableEntity.getId()==0){
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return new StyledString(identifiableEntity.generateTitle());
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}
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else{
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return new StyledString(identifiableEntity.getTitleCache());
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}
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}
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return null;
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}
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@Override
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public Image getImage(Object element) {
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Image image = null;
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int scale = 50;
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if (element instanceof Media && PreferencesUtil.isShowMediaPreview()){
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Set<MediaRepresentation> representations = ((Media)element).getRepresentations();
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if(representations.iterator().hasNext()){
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MediaRepresentation rep = null;
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MediaRepresentationPart smallestPart = null;
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rep = MediaUtils.findBestMatchingRepresentation((Media)element, null, null, scale, scale, null);
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List<MediaRepresentationPart> parts = rep.getParts();
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for (MediaRepresentationPart part: parts){
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if (smallestPart != null){
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if (smallestPart.getSize() != null && part.getSize() != null) {
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if (smallestPart.getSize() > part.getSize()){
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smallestPart = part;
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}
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}
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}else{
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smallestPart = part;
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}
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}
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if (smallestPart != null){
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URI uri = smallestPart.getUri();
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if (uri == null){
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return null;
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}
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InputStream imageStream;
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try {
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imageStream = UriUtils.getInputStream(uri);
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image = new Image(Display.getCurrent(), imageStream);
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int height = image.getBounds().height;
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int width = image.getBounds().width;
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if (height>width){
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width = width/(height/scale);
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height = scale;
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}else{
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height = height/(width/scale);
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width = scale;
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}
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Image scaled = new Image(Display.getDefault(), scale, scale);
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GC gc = new GC(scaled);
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gc.setAntialias(SWT.ON);
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gc.setInterpolation(SWT.HIGH);
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gc.drawImage(image, 0, 0,
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image.getBounds().width, image.getBounds().height,
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0, 0, width, height);
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gc.dispose();
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image.dispose(); // don't forget about me!
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return scaled;
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} catch (Exception e) {
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// TODO Auto-generated catch block
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return null;
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}
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}else{
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return null;
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}
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}
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}
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return image;
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}
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@Override
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public void dispose() {
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// garbage collection system resources
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}
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}
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