/**
* Copyright (C) 2007 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 63.529,40 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package org.gudy.azureus2.ui.swt.views;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.*;
import org.gudy.azureus2.core3.disk.DiskManagerPiece;
import org.gudy.azureus2.core3.internat.MessageText;
import org.gudy.azureus2.core3.peer.PEPeerManager;
import org.gudy.azureus2.core3.peer.PEPiece;
import org.gudy.azureus2.ui.swt.Messages;
import org.gudy.azureus2.ui.swt.Utils;
import org.gudy.azureus2.ui.swt.mainwindow.Colors;
import org.gudy.azureus2.ui.swt.plugins.UISWTView;
import org.gudy.azureus2.ui.swt.plugins.UISWTViewEvent;
import org.gudy.azureus2.ui.swt.pluginsimpl.UISWTViewCoreEventListener;
import org.gudy.azureus2.ui.swt.views.utils.CoordinateTransform;
import com.aelitis.azureus.core.peermanager.piecepicker.PiecePicker;
/**
* @author Aaron Grunthal
* @create 02.10.2007
*/
public abstract class PieceDistributionView
implements UISWTViewCoreEventListener
{
private Composite comp;
private Canvas pieceDistCanvas;
protected PEPeerManager pem;
// list of pieces that the data source has, won't be used if isMe is true
protected boolean[] hasPieces;
// field must be set to true to display data that we know about ourselves
// instead of remote peers
protected boolean isMe = false;
private boolean initialized = false;
private Image imgToPaint = null;
private UISWTView swtView;
/**
* implementors of this method must provide an appropriate peer manager and
* possibly provide the hasPieces array for pieces the data source has
*/
abstract public void dataSourceChanged(Object newDataSource);
private String getFullTitle() {
return MessageText.getString("PiecesView.DistributionView.title");
}
private void initialize(Composite parent) {
comp = new Composite(parent,SWT.NONE);
createPieceDistPanel();
initialized = true;
refresh();
}
private void createPieceDistPanel() {
comp.setLayout(new FillLayout());
//pieceDistComposite = new Composite(parent, SWT.NONE);
pieceDistCanvas = new Canvas(comp,SWT.NO_BACKGROUND);
pieceDistCanvas.addListener(SWT.Paint, new Listener() {
public void handleEvent(Event event) {
if ( pem==null || pem.isDestroyed()){
event.gc.fillRectangle(event.x, event.y, event.width, event.height);
}else{
if (imgToPaint != null && !imgToPaint.isDisposed()) {
event.gc.drawImage(imgToPaint, 0, 0);
}
}
}
});
}
private final void updateDistribution()
{
if (!initialized || pem == null || comp == null
|| pem.getPiecePicker() == null || pem.getDiskManager() == null
|| !comp.isVisible())
return;
Rectangle rect = pieceDistCanvas.getBounds();
if (rect.height <= 0 || rect.width <= 0)
return;
PiecePicker picker = pem.getPiecePicker();
final int seeds = pem.getNbSeeds() + (pem.isSeeding() ? 1 : 0);
final int connected = pem.getNbPeers() + seeds + (pem.isSeeding() ? 0 : 1);
final int upperBound = 1 + (1 << (int) Math.ceil(Math.log(connected + 0.0) / Math.log(2.0)));
// System.out.println("conn:"+connected+" bound:"+upperBound);
final int minAvail = (int) picker.getMinAvailability();
//final int maxAvail = picker.getMaxAvailability();
final int nbPieces = picker.getNumberOfPieces();
final int[] availabilties = picker.getAvailability();
final DiskManagerPiece[] dmPieces = pem.getDiskManager().getPieces();
final PEPiece[] pePieces = pem.getPieces();
final int[] globalPiecesPerAvailability = new int[upperBound];
final int[] datasourcePiecesPerAvailability = new int[upperBound];
// me-only stuff
final boolean[] downloading = new boolean[upperBound];
int avlPeak = 0;
//int avlPeakIdx = -1;
for (int i = 0; i < nbPieces; i++)
{
if (availabilties[i] >= upperBound)
return; // availability and peer lists are OOS, just wait for the next round
final int newPeak;
if (avlPeak < (newPeak = ++globalPiecesPerAvailability[availabilties[i]]))
{
avlPeak = newPeak;
//avlPeakIdx = availabilties[i];
}
if ((isMe && dmPieces[i].isDone()) || (!isMe && hasPieces != null && hasPieces[i]))
++datasourcePiecesPerAvailability[availabilties[i]];
if (isMe && pePieces[i] != null)
downloading[availabilties[i]] = true;
}
Image img = new Image(comp.getDisplay(),pieceDistCanvas.getBounds());
GC gc = new GC(img);
try
{
int stepWidthX = rect.width / upperBound;
int barGap = 1;
int barWidth = stepWidthX - barGap - 1;
int barFillingWidth = barWidth - 1;
double stepWidthY = 1.0 * (rect.height - 1) / avlPeak;
int offsetY = rect.height;
gc.setForeground(Colors.green);
for (int i = 0; i <= connected; i++)
{
Color curColor;
if (i == 0)
curColor = Colors.colorError;
else if (i <= seeds)
curColor = Colors.green;
else
curColor = Colors.blues[Colors.BLUES_DARKEST];
gc.setBackground(curColor);
gc.setForeground(curColor);
if(globalPiecesPerAvailability[i] == 0)
{
gc.setLineWidth(2);
gc.drawLine(stepWidthX * i, offsetY - 1, stepWidthX * (i + 1) - barGap, offsetY - 1);
} else
{
gc.setLineWidth(1);
if (downloading[i])
gc.setLineStyle(SWT.LINE_DASH);
gc.fillRectangle(stepWidthX * i + 1, offsetY - 1, barFillingWidth, (int) (Math.ceil(stepWidthY * datasourcePiecesPerAvailability[i] - 1) * -1));
gc.drawRectangle(stepWidthX * i, offsetY, barWidth, (int) (Math.ceil(stepWidthY * globalPiecesPerAvailability[i]) + 1) * -1);
}
if(i==minAvail)
{
gc.setForeground(Colors.blue);
gc.drawRectangle(stepWidthX*i+1, offsetY-1, barWidth-2, (int)(Math.ceil(stepWidthY*globalPiecesPerAvailability[i]-1))*-1);
}
gc.setLineStyle(SWT.LINE_SOLID);
}
gc.setLineWidth(1);
CoordinateTransform t = new CoordinateTransform(rect);
t.shiftExternal(rect.width,0);
t.scale(-1.0, 1.0);
String[] boxContent = new String[] {
MessageText.getString("PiecesView.DistributionView.NoAvl"),
MessageText.getString("PiecesView.DistributionView.SeedAvl"),
MessageText.getString("PiecesView.DistributionView.PeerAvl"),
MessageText.getString("PiecesView.DistributionView.RarestAvl",new String[] {globalPiecesPerAvailability[minAvail]+"",minAvail+""}),
MessageText.getString("PiecesView.DistributionView."+ (isMe? "weHave" : "theyHave")),
MessageText.getString("PiecesView.DistributionView.weDownload")
};
int charWidth = gc.getFontMetrics().getAverageCharWidth();
int charHeight = gc.getFontMetrics().getHeight();
int maxBoxOffsetY = charHeight + 2;
int maxBoxWidth = 0;
int maxBoxOffsetX = 0;
for (int i = 0; i < boxContent.length; i++)
maxBoxWidth = Math.max(maxBoxWidth, boxContent[i].length());
maxBoxOffsetX = (maxBoxWidth+5) * charWidth;
maxBoxWidth = ++maxBoxWidth * charWidth;
int boxNum = 1;
gc.setForeground(Colors.colorError);
gc.setBackground(Colors.background);
gc.drawRectangle(t.x(maxBoxOffsetX),t.y(maxBoxOffsetY*boxNum),maxBoxWidth,charHeight);
gc.drawString(boxContent[boxNum-1],t.x(maxBoxOffsetX-5),t.y(maxBoxOffsetY*boxNum),true);
boxNum++;
gc.setForeground(Colors.green);
gc.setBackground(Colors.background);
gc.drawRectangle(t.x(maxBoxOffsetX),t.y(maxBoxOffsetY*boxNum),maxBoxWidth,charHeight);
gc.drawString(boxContent[boxNum-1],t.x(maxBoxOffsetX-5),t.y(maxBoxOffsetY*boxNum),true);
boxNum++;
gc.setForeground(Colors.blues[Colors.BLUES_DARKEST]);
gc.drawRectangle(t.x(maxBoxOffsetX),t.y(maxBoxOffsetY*boxNum),maxBoxWidth,charHeight);
gc.drawString(boxContent[boxNum-1],t.x(maxBoxOffsetX-5),t.y(maxBoxOffsetY*boxNum),true);
boxNum++;
gc.setForeground(Colors.blue);
gc.drawRectangle(t.x(maxBoxOffsetX),t.y(maxBoxOffsetY*boxNum),maxBoxWidth,charHeight);
gc.drawString(boxContent[boxNum-1],t.x(maxBoxOffsetX-5),t.y(maxBoxOffsetY*boxNum),true);
boxNum++;
gc.setForeground(Colors.black);
gc.setBackground(Colors.black);
gc.drawRectangle(t.x(maxBoxOffsetX),t.y(maxBoxOffsetY*boxNum),maxBoxWidth,charHeight);
gc.fillRectangle(t.x(maxBoxOffsetX),t.y(maxBoxOffsetY*boxNum),maxBoxWidth/2,charHeight);
gc.setForeground(Colors.grey);
gc.setBackground(Colors.background);
gc.drawString(boxContent[boxNum-1],t.x(maxBoxOffsetX-5),t.y(maxBoxOffsetY*boxNum),true);
if(isMe)
{
boxNum++;
gc.setForeground(Colors.black);
gc.setLineStyle(SWT.LINE_DASH);
gc.drawRectangle(t.x(maxBoxOffsetX),t.y(maxBoxOffsetY*boxNum),maxBoxWidth,charHeight);
gc.drawString(boxContent[boxNum-1],t.x(maxBoxOffsetX-5),t.y(maxBoxOffsetY*boxNum),true);
}
gc.setLineStyle(SWT.LINE_SOLID);
} finally
{
gc.dispose();
}
if (imgToPaint != null) {
imgToPaint.dispose();
}
imgToPaint = img;
pieceDistCanvas.redraw();
}
public void refresh() {
if (!initialized || pem == null)
return;
updateDistribution();
}
private Composite getComposite() {
return comp;
}
private void delete() {
if (!initialized)
return;
initialized = false;
Utils.disposeSWTObjects(new Object[] { pieceDistCanvas, comp, imgToPaint });
}
private void viewActivated() {
updateDistribution();
}
private void viewDeactivated() {
Utils.disposeSWTObjects(new Object[] { imgToPaint });
}
public boolean eventOccurred(UISWTViewEvent event) {
switch (event.getType()) {
case UISWTViewEvent.TYPE_CREATE:
swtView = (UISWTView)event.getData();
swtView.setTitle(getFullTitle());
break;
case UISWTViewEvent.TYPE_DESTROY:
delete();
break;
case UISWTViewEvent.TYPE_INITIALIZE:
initialize((Composite)event.getData());
break;
case UISWTViewEvent.TYPE_LANGUAGEUPDATE:
Messages.updateLanguageForControl(getComposite());
swtView.setTitle(getFullTitle());
break;
case UISWTViewEvent.TYPE_DATASOURCE_CHANGED:
dataSourceChanged(event.getData());
break;
case UISWTViewEvent.TYPE_FOCUSGAINED:
viewActivated();
break;
case UISWTViewEvent.TYPE_FOCUSLOST:
viewDeactivated();
break;
case UISWTViewEvent.TYPE_REFRESH:
refresh();
break;
}
return true;
}
}