/*
* Created on Jun 29, 2006 10:13:59 PM
* Copyright (C) 2006 Aelitis, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*/
package com.aelitis.azureus.ui.swt.columns.torrent;
import java.io.ByteArrayInputStream;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.gudy.azureus2.core3.download.DownloadManager;
import org.gudy.azureus2.core3.torrent.TOTorrent;
import org.gudy.azureus2.ui.swt.ImageRepository;
import org.gudy.azureus2.ui.swt.Utils;
import org.gudy.azureus2.ui.swt.plugins.UISWTGraphic;
import org.gudy.azureus2.ui.swt.pluginsimpl.UISWTGraphicImpl;
import org.gudy.azureus2.ui.swt.views.table.utils.CoreTableColumn;
import com.aelitis.azureus.core.torrent.PlatformTorrentUtils;
import com.aelitis.azureus.ui.common.table.TableRowCore;
import org.gudy.azureus2.plugins.ui.Graphic;
import org.gudy.azureus2.plugins.ui.tables.*;
/**
* @author TuxPaper
* @created Jun 29, 2006
*
*/
public class ColumnMediaThumb
extends CoreTableColumn
implements TableCellAddedListener
{
public static String COLUMN_ID = "MediaThumb";
/**
*
*/
public ColumnMediaThumb(String sTableID) {
super(COLUMN_ID, sTableID);
initializeAsGraphic(POSITION_LAST, 50);
setWidthLimits(50, 50);
setAlignment(ALIGN_CENTER);
}
public void cellAdded(TableCell cell) {
new Cell(cell);
}
private class Cell
implements TableCellRefreshListener, TableCellDisposeListener,
TableCellVisibilityListener
{
TOTorrent torrent;
Graphic graphic;
public Cell(TableCell cell) {
cell.addListeners(this);
cell.setMarginWidth(0);
cell.setMarginHeight(0);
}
public void dispose(TableCell cell) {
disposeOldImage(cell);
}
public void refresh(TableCell cell) {
refresh(cell, false);
}
public void refresh(TableCell cell, boolean bForce) {
DownloadManager dm = (DownloadManager) cell.getDataSource();
TOTorrent newTorrent = dm.getTorrent();
long lastUpdated = PlatformTorrentUtils.getContentLastUpdated(newTorrent);
// xxx hack.. cell starts with 0 sort value
if (lastUpdated == 0) {
lastUpdated = -1;
}
boolean bChanged = cell.setSortValue(lastUpdated) || bForce;
if (newTorrent == torrent && !bChanged && cell.isValid()) {
return;
}
if (!bForce && !cell.isShown()) {
return;
}
torrent = newTorrent;
if (torrent == null) {
cell.setGraphic(null);
} else {
// only dispose of old graphic if it's a thumbnail
disposeOldImage(cell);
byte[] b = PlatformTorrentUtils.getContentThumbnail(torrent);
if (b == null) {
// Don't ever dispose of PathIcon, it's cached and may be used elsewhere
String path = dm.getDownloadState().getPrimaryFile();
if (path != null) {
Image icon = ImageRepository.getPathIcon(path, true);
Graphic graphic = new UISWTGraphicImpl(icon);
cell.setGraphic(graphic);
} else {
cell.setGraphic(null);
}
} else {
int MAXH = cell.getHeight() - 2;
// hack!
if (MAXH <= 0) {
MAXH = 30;
}
ByteArrayInputStream bis = new ByteArrayInputStream(b);
try {
Image img = new Image(Display.getDefault(), bis);
int w = img.getBounds().width;
int h = img.getBounds().height;
if (h > MAXH) {
int h2 = MAXH;
int w2 = h2 * w / h;
Image newImg = new Image(img.getDevice(), w2, h2);
GC gc = new GC(newImg);
gc.setAdvanced(true);
try {
gc.setInterpolation(SWT.HIGH);
} catch (Exception e) {
// may not be avail
}
gc.drawImage(img, 0, 0, w, h, 0, 0, w2, h2);
gc.dispose();
img.dispose();
img = newImg;
}
Graphic graphic = new disposableUISWTGraphic(img);
cell.setGraphic(graphic);
} catch (Exception e) {
// ignore, probably invalid image
}
}
}
}
/**
*
*/
private void disposeOldImage(TableCell cell) {
Graphic oldGraphic = cell.getGraphic();
if (oldGraphic instanceof disposableUISWTGraphic) {
Image oldImage = ((UISWTGraphic) oldGraphic).getImage();
Utils.disposeSWTObjects(new Object[] {
oldImage
});
}
}
public void cellVisibilityChanged(TableCell cell, int visibility) {
if (visibility == TableCellVisibilityListener.VISIBILITY_HIDDEN) {
//log(cell, "whoo, save");
disposeOldImage(cell);
} else if (visibility == TableCellVisibilityListener.VISIBILITY_SHOWN) {
//log(cell, "whoo, draw");
refresh(cell, true);
}
}
private void log(TableCell cell, String s) {
System.out.println(((TableRowCore) cell.getTableRow()).getIndex() + ":"
+ System.currentTimeMillis() + ": " + s);
}
}
public class disposableUISWTGraphic
extends UISWTGraphicImpl
{
public disposableUISWTGraphic(Image newImage) {
super(newImage);
}
}
}
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