Examples with PEPiece com.biglybt.core.peer.PEPiece used on opensource projects

Example 21 with PEPiece

use of com.biglybt.core.peer.PEPiece in project BiglyBT by BiglySoftware.

the class PieceGraphView method buildImage.

private void buildImage() {
    if (canvas == null || canvas.isDisposed()) {
        return;
    }
    // canvas.setBackground(ColorCache.getColor(canvas.getDisplay(), "#1b1b1b"));
    Rectangle bounds = canvas.getClientArea();
    if (bounds.isEmpty()) {
        return;
    }
    if (dlm == null) {
        canvas.redraw();
        return;
    }
    PEPeerManager pm = dlm.getPeerManager();
    DiskManager dm = dlm.getDiskManager();
    if (pm == null || dm == null) {
        canvas.redraw();
        return;
    }
    final DiskManagerPiece[] dm_pieces = dm.getPieces();
    if (dm_pieces == null || dm_pieces.length == 0) {
        canvas.redraw();
        return;
    }
    int numPieces = dm_pieces.length;
    if (imgHaveAll == null || imgHaveAll.isDisposed()) {
        imgHaveAll = new Image(canvas.getDisplay(), BLOCK_SIZE, BLOCK_SIZE);
        GC gc = new GC(imgHaveAll);
        try {
            try {
                gc.setAntialias(SWT.ON);
            } catch (Exception e) {
            // ignore
            }
            gc.setBackground(canvas.getBackground());
            gc.fillRectangle(imgHaveAll.getBounds());
            gc.setBackground(blockColors[BLOCKCOLOR_HAVEALL]);
            gc.fillRoundRectangle(1, 1, BLOCK_FILLSIZE, BLOCK_FILLSIZE, BLOCK_FILLSIZE, BLOCK_FILLSIZE);
        } finally {
            gc.dispose();
        }
    }
    if (imgNoHave == null || imgNoHave.isDisposed()) {
        imgNoHave = new Image(canvas.getDisplay(), BLOCK_SIZE, BLOCK_SIZE);
        GC gc = new GC(imgNoHave);
        try {
            try {
                gc.setAntialias(SWT.ON);
            } catch (Exception e) {
            // ignore
            }
            gc.setBackground(canvas.getBackground());
            gc.fillRectangle(imgNoHave.getBounds());
            gc.setBackground(blockColors[BLOCKCOLOR_NOHAVE]);
            gc.fillRoundRectangle(1, 1, BLOCK_FILLSIZE, BLOCK_FILLSIZE, BLOCK_FILLSIZE, BLOCK_FILLSIZE);
        } finally {
            gc.dispose();
        }
    }
    boolean clearImage = img == null || img.isDisposed() || img.getBounds().width != bounds.width || img.getBounds().height != bounds.height;
    if (clearImage) {
        if (img != null && !img.isDisposed()) {
            img.dispose();
        }
        // System.out.println("clear " + img);
        img = new Image(canvas.getDisplay(), bounds.width, bounds.height);
        squareCache = null;
    }
    PEPiece[] currentDLPieces = dlm.getCurrentPieces();
    Arrays.sort(currentDLPieces, compFindPEPiece);
    // find upload pieces
    ArrayList currentULPieces = new ArrayList();
    ArrayList futureULPieces = new ArrayList();
    PEPeer[] peers = (PEPeer[]) pm.getPeers().toArray(new PEPeer[0]);
    for (int i = 0; i < peers.length; i++) {
        PEPeer peer = peers[i];
        int[] peerRequestedPieces = peer.getIncomingRequestedPieceNumbers();
        if (peerRequestedPieces != null && peerRequestedPieces.length > 0) {
            currentULPieces.add(new Long(peerRequestedPieces[0]));
            for (int j = 1; j < peerRequestedPieces.length; j++) {
                futureULPieces.add(new Long(peerRequestedPieces[j]));
            }
        }
        // we'll have duplicates
        Collections.sort(currentULPieces);
        Collections.sort(futureULPieces);
    }
    int iNumCols = bounds.width / BLOCK_SIZE;
    int iNumRows = bounds.height / BLOCK_SIZE;
    int numSquares = onePiecePerBlock ? numPieces : iNumCols * iNumRows;
    double numPiecesPerSquare = numPieces / (double) numSquares;
    if (squareCache == null || squareCache.length != numSquares) {
        squareCache = new double[numSquares];
        Arrays.fill(squareCache, -1);
    }
    int[] availability = pm.getAvailability();
    int numRedraws = 0;
    GC gc = new GC(img);
    try {
        int iRow = 0;
        if (clearImage) {
            gc.setBackground(canvas.getBackground());
            gc.fillRectangle(bounds);
        }
        try {
            gc.setAdvanced(true);
            gc.setAntialias(SWT.ON);
            gc.setInterpolation(SWT.HIGH);
        } catch (Exception e) {
        // ignore
        }
        int iCol = 0;
        for (int squareNo = 0; squareNo < numSquares; squareNo++) {
            if (iCol >= iNumCols) {
                iCol = 0;
                iRow++;
            }
            int startNo = (int) (squareNo * numPiecesPerSquare);
            int count = (int) ((squareNo + 1) * numPiecesPerSquare) - startNo;
            if (count == 0) {
                count = 1;
            }
            // if (count > 1) System.out.println("!!! " + startNo);
            // System.out.println(startNo + ";" + count);
            double pctDone = getPercentDone(startNo, count, dm_pieces);
            // System.out.print(pctDone + ";");
            int colorIndex;
            int iXPos = iCol * BLOCK_SIZE;
            int iYPos = iRow * BLOCK_SIZE;
            if (pctDone == 1) {
                if (squareCache[squareNo] != pctDone) {
                    squareCache[squareNo] = pctDone;
                    gc.drawImage(imgHaveAll, iXPos, iYPos);
                    if (!clearImage) {
                        numRedraws++;
                        canvas.redraw(iXPos, iYPos, BLOCK_SIZE, BLOCK_SIZE, false);
                    }
                }
            } else if (pctDone == 0) {
                if (squareCache[squareNo] != pctDone) {
                    squareCache[squareNo] = pctDone;
                    gc.drawImage(imgNoHave, iXPos, iYPos);
                    if (!clearImage) {
                        numRedraws++;
                        canvas.redraw(iXPos, iYPos, BLOCK_SIZE, BLOCK_SIZE, false);
                    }
                }
            } else {
                // !done
                boolean isDownloading = false;
                for (int i = startNo; i < startNo + count; i++) {
                    if (Arrays.binarySearch(currentDLPieces, new Long(i), compFindPEPiece) >= 0) {
                        isDownloading = true;
                        break;
                    }
                }
                double val = pctDone + (isDownloading ? 0 : 1);
                if (squareCache[squareNo] != val) {
                    squareCache[squareNo] = val;
                    gc.drawImage(imgNoHave, iXPos, iYPos);
                    int size = (int) (BLOCK_FILLSIZE * pctDone);
                    if (size == 0) {
                        size = 1;
                    }
                    int q = (int) ((BLOCK_FILLSIZE - size) / 2.0 + 0.5) + 1;
                    colorIndex = isDownloading ? BLOCKCOLOR_DOWNLOADING : BLOCKCOLOR_HAVESOME;
                    gc.setBackground(blockColors[colorIndex]);
                    gc.fillOval(iXPos + q, iYPos + q, size, size);
                    // gc.fillRoundRectangle(iXPos + q, iYPos + q, size, size, size, size);
                    if (!clearImage) {
                        numRedraws++;
                        canvas.redraw(iXPos, iYPos, BLOCK_SIZE, BLOCK_SIZE, false);
                    }
                }
            }
            for (int i = startNo; i < startNo + count; i++) {
                if (Collections.binarySearch(currentULPieces, new Long(i)) >= 0) {
                    colorIndex = BLOCKCOLOR_UPLOADING;
                    int size = BLOCK_FILLSIZE + 1;
                    gc.setForeground(blockColors[colorIndex]);
                    gc.drawRoundRectangle(iXPos, iYPos, size, size, size, size);
                    if (!clearImage) {
                        numRedraws++;
                        canvas.redraw(iXPos, iYPos, BLOCK_SIZE, BLOCK_SIZE, false);
                    }
                    squareCache[squareNo] = -1;
                    break;
                } else if (Collections.binarySearch(futureULPieces, new Long(i)) >= 0) {
                    colorIndex = BLOCKCOLOR_UPLOADING;
                    int size = BLOCK_FILLSIZE + 1;
                    gc.setForeground(blockColors[colorIndex]);
                    gc.setLineStyle(SWT.LINE_DOT);
                    gc.drawRoundRectangle(iXPos, iYPos, size, size, size, size);
                    if (!clearImage) {
                        numRedraws++;
                        canvas.redraw(iXPos, iYPos, BLOCK_SIZE, BLOCK_SIZE, false);
                    }
                    gc.setLineStyle(SWT.LINE_SOLID);
                    squareCache[squareNo] = -1;
                    break;
                }
            }
            if (availability != null) {
                boolean hasNoAvail = false;
                for (int i = startNo; i < startNo + count; i++) {
                    if (availability[i] == 0) {
                        hasNoAvail = true;
                        squareCache[squareNo] = -1;
                        break;
                    }
                }
                if (hasNoAvail) {
                    gc.setForeground(blockColors[BLOCKCOLOR_NOAVAIL]);
                    gc.drawRectangle(iXPos, iYPos, BLOCK_FILLSIZE + 1, BLOCK_FILLSIZE + 1);
                    if (!clearImage) {
                        numRedraws++;
                        canvas.redraw(iXPos, iYPos, BLOCK_SIZE, BLOCK_SIZE, false);
                    }
                }
            }
            iCol++;
        }
    // System.out.println("redraws " + numRedraws);
    } catch (Exception e) {
        Debug.out(e);
    } finally {
        gc.dispose();
    }
// canvas.redraw();
}

Example 22 with PEPiece

use of com.biglybt.core.peer.PEPiece in project BiglyBT by BiglySoftware.

the class PiecesView method initYourTableView.

// @see com.biglybt.ui.swt.views.table.impl.TableViewTab#initYourTableView()
@Override
public TableViewSWT<PEPiece> initYourTableView() {
    tv = TableViewFactory.createTableViewSWT(PEPiece.class, TableManager.TABLE_TORRENT_PIECES, getPropertiesPrefix(), basicItems, basicItems[0].getName(), SWT.SINGLE | SWT.FULL_SELECTION | SWT.VIRTUAL);
    tv.setEnableTabViews(enable_tabs, true, null);
    UIFunctionsSWT uiFunctions = UIFunctionsManagerSWT.getUIFunctionsSWT();
    if (uiFunctions != null) {
        UISWTInstance pluginUI = uiFunctions.getUISWTInstance();
        registerPluginViews(pluginUI);
    }
    tv.addTableDataSourceChangedListener(this, true);
    tv.addMenuFillListener(this);
    tv.addLifeCycleListener(this);
    tv.addSelectionListener(this, false);
    return tv;
}

Example 23 with PEPiece

use of com.biglybt.core.peer.PEPiece in project BiglyBT by BiglySoftware.

the class Show method printTorrentDetails.

/**
 * prints out the full details of a particular torrent
 * @param out
 * @param dm
 * @param torrentNum
 */
private static void printTorrentDetails(PrintStream out, DownloadManager dm, int torrentNum, List<String> args) {
    String name = dm.getDisplayName();
    if (name == null)
        name = "?";
    out.println("> -----");
    out.println("Info on Torrent #" + torrentNum + " (" + name + ")");
    out.println("- General Info -");
    String[] health = { "- no info -", "stopped", "no remote connections", "no tracker", "OK", "ko" };
    try {
        out.println("Health: " + health[dm.getHealthStatus()]);
    } catch (Exception e) {
        out.println("Health: " + health[0]);
    }
    out.println("State: " + Integer.toString(dm.getState()));
    if (dm.getState() == DownloadManager.STATE_ERROR)
        out.println("Error: " + dm.getErrorDetails());
    out.println("Hash: " + TorrentUtils.nicePrintTorrentHash(dm.getTorrent(), true));
    out.println("- Torrent file -");
    out.println("Torrent Filename: " + dm.getTorrentFileName());
    out.println("Saving to: " + dm.getSaveLocation());
    out.println("Created By: " + dm.getTorrentCreatedBy());
    out.println("Comment: " + dm.getTorrentComment());
    Category cat = dm.getDownloadState().getCategory();
    if (cat != null) {
        out.println("Category: " + cat.getName());
    }
    List<Tag> tags = TagManagerFactory.getTagManager().getTagsForTaggable(TagType.TT_DOWNLOAD_MANUAL, dm);
    String tags_str;
    if (tags.size() == 0) {
        tags_str = "None";
    } else {
        tags_str = "";
        for (Tag t : tags) {
            tags_str += (tags_str.length() == 0 ? "" : ",") + t.getTagName(true);
        }
    }
    out.println("Tags: " + tags_str);
    out.println("- Tracker Info -");
    TRTrackerAnnouncer trackerclient = dm.getTrackerClient();
    if (trackerclient != null) {
        out.println("URL: " + trackerclient.getTrackerURL());
        String timestr;
        try {
            int time = trackerclient.getTimeUntilNextUpdate();
            if (time < 0) {
                timestr = MessageText.getString("GeneralView.label.updatein.querying");
            } else {
                int minutes = time / 60;
                int seconds = time % 60;
                String strSeconds = "" + seconds;
                if (seconds < 10) {
                    // $NON-NLS-1$
                    strSeconds = "0" + seconds;
                }
                timestr = minutes + ":" + strSeconds;
            }
        } catch (Exception e) {
            timestr = "unknown";
        }
        out.println("Time till next Update: " + timestr);
        out.println("Status: " + trackerclient.getStatusString());
    } else
        out.println("  Not available");
    out.println("- Files Info -");
    DiskManagerFileInfo[] files = dm.getDiskManagerFileInfo();
    if (files != null) {
        for (int i = 0; i < files.length; i++) {
            out.print(((i < 9) ? "   " : "  ") + Integer.toString(i + 1) + " (");
            String tmp = ">";
            if (files[i].getPriority() > 0)
                tmp = "+";
            if (files[i].isSkipped())
                tmp = "!";
            out.print(tmp + ") ");
            if (files[i] != null) {
                long fLen = files[i].getLength();
                if (fLen > 0) {
                    DecimalFormat df = new DecimalFormat("000.0%");
                    out.print(df.format(files[i].getDownloaded() * 1.0 / fLen));
                    out.println("\t" + files[i].getFile(true).getName());
                } else
                    out.println("Info not available.");
            } else
                out.println("Info not available.");
        }
    } else {
        out.println("  Info not available.");
    }
    for (String arg : args) {
        arg = arg.toLowerCase();
        if (arg.startsWith("pie")) {
            out.println("Pieces");
            PEPeerManager pm = dm.getPeerManager();
            if (pm != null) {
                PiecePicker picker = pm.getPiecePicker();
                PEPiece[] pieces = pm.getPieces();
                String line = "";
                for (int i = 0; i < pieces.length; i++) {
                    String str = picker.getPieceString(i);
                    line += (line.length() == 0 ? (i + " ") : ",") + str;
                    PEPiece piece = pieces[i];
                    if (piece != null) {
                        line += ":" + piece.getString();
                    }
                    if ((i + 1) % 10 == 0) {
                        out.println(line);
                        line = "";
                    }
                }
                if (line.length() > 0) {
                    out.println(line);
                }
            }
        } else if (arg.startsWith("pee")) {
            out.println("Peers");
            PEPeerManager pm = dm.getPeerManager();
            if (pm != null) {
                List<PEPeer> peers = pm.getPeers();
                out.println("\tConnected to " + peers.size() + " peers");
                for (PEPeer peer : peers) {
                    PEPeerStats stats = peer.getStats();
                    System.out.println("\t\t" + peer.getIp() + ", in=" + (peer.isIncoming() ? "Y" : "N") + ", prot=" + peer.getProtocol() + ", choked=" + (peer.isChokingMe() ? "Y" : "N") + ", up=" + DisplayFormatters.formatByteCountToKiBEtcPerSec(stats.getDataSendRate() + stats.getProtocolSendRate()) + ", down=" + DisplayFormatters.formatByteCountToKiBEtcPerSec(stats.getDataReceiveRate() + stats.getProtocolReceiveRate()) + ", in_req=" + peer.getIncomingRequestCount() + ", out_req=" + peer.getOutgoingRequestCount());
                }
            }
        }
    }
    out.println("> -----");
}

Example 24 with PEPiece

use of com.biglybt.core.peer.PEPiece in project BiglyBT by BiglySoftware.

the class FileInfoView method createFileInfoPanel.

private Composite createFileInfoPanel(Composite parent) {
    GridLayout layout;
    GridData gridData;
    // Peer Info section contains
    // - Peer's Block display
    // - Peer's Datarate
    fileInfoComposite = new Composite(parent, SWT.NONE);
    layout = new GridLayout();
    layout.numColumns = 2;
    layout.horizontalSpacing = 0;
    layout.verticalSpacing = 0;
    layout.marginHeight = 0;
    layout.marginWidth = 0;
    fileInfoComposite.setLayout(layout);
    gridData = new GridData(GridData.FILL, GridData.FILL, true, true);
    fileInfoComposite.setLayoutData(gridData);
    new Label(fileInfoComposite, SWT.NULL).setLayoutData(new GridData());
    topLabel = new Label(fileInfoComposite, SWT.NULL);
    gridData = new GridData(SWT.FILL, SWT.DEFAULT, false, false);
    topLabel.setLayoutData(gridData);
    sc = new ScrolledComposite(fileInfoComposite, SWT.V_SCROLL);
    sc.setExpandHorizontal(true);
    sc.setExpandVertical(true);
    layout = new GridLayout();
    layout.horizontalSpacing = 0;
    layout.verticalSpacing = 0;
    layout.marginHeight = 0;
    layout.marginWidth = 0;
    sc.setLayout(layout);
    gridData = new GridData(GridData.FILL, GridData.FILL, true, true, 2, 1);
    sc.setLayoutData(gridData);
    fileInfoCanvas = new Canvas(sc, SWT.NO_REDRAW_RESIZE | SWT.NO_BACKGROUND);
    gridData = new GridData(GridData.FILL, SWT.DEFAULT, true, false);
    fileInfoCanvas.setLayoutData(gridData);
    fileInfoCanvas.addPaintListener(new PaintListener() {

        @Override
        public void paintControl(PaintEvent e) {
            if (e.width <= 0 || e.height <= 0)
                return;
            try {
                Rectangle bounds = (img == null) ? null : img.getBounds();
                if (bounds == null) {
                    e.gc.fillRectangle(e.x, e.y, e.width, e.height);
                } else {
                    if (e.x + e.width > bounds.width)
                        e.gc.fillRectangle(bounds.width, e.y, e.x + e.width - bounds.width + 1, e.height);
                    if (e.y + e.height > bounds.height)
                        e.gc.fillRectangle(e.x, bounds.height, e.width, e.y + e.height - bounds.height + 1);
                    int width = Math.min(e.width, bounds.width - e.x);
                    int height = Math.min(e.height, bounds.height - e.y);
                    e.gc.drawImage(img, e.x, e.y, width, height, e.x, e.y, width, height);
                }
            } catch (Exception ex) {
            }
        }
    });
    fileInfoCanvas.addMouseTrackListener(new MouseTrackAdapter() {

        @Override
        public void mouseHover(MouseEvent event) {
            showPieceDetails(event.x, event.y);
        }
    });
    Listener doNothingListener = new Listener() {

        @Override
        public void handleEvent(Event event) {
        }
    };
    fileInfoCanvas.addListener(SWT.KeyDown, doNothingListener);
    final Menu menu = new Menu(fileInfoCanvas.getShell(), SWT.POP_UP);
    fileInfoCanvas.setMenu(menu);
    fileInfoCanvas.addListener(SWT.MenuDetect, new Listener() {

        @Override
        public void handleEvent(Event event) {
            Point pt = fileInfoCanvas.toControl(event.x, event.y);
            int piece_number = getPieceNumber(pt.x, pt.y);
            menu.setData("pieceNumber", piece_number);
        }
    });
    MenuBuildUtils.addMaintenanceListenerForMenu(menu, new MenuBuildUtils.MenuBuilder() {

        @Override
        public void buildMenu(Menu menu, MenuEvent event) {
            Integer pn = (Integer) menu.getData("pieceNumber");
            if (pn != null && pn != -1) {
                DownloadManager download_manager = file.getDownloadManager();
                if (download_manager == null) {
                    return;
                }
                DiskManager disk_manager = download_manager.getDiskManager();
                PEPeerManager peer_manager = download_manager.getPeerManager();
                if (disk_manager == null || peer_manager == null) {
                    return;
                }
                final PiecePicker picker = peer_manager.getPiecePicker();
                DiskManagerPiece[] dm_pieces = disk_manager.getPieces();
                PEPiece[] pe_pieces = peer_manager.getPieces();
                final int piece_number = pn;
                final DiskManagerPiece dm_piece = dm_pieces[piece_number];
                final PEPiece pe_piece = pe_pieces[piece_number];
                final MenuItem force_piece = new MenuItem(menu, SWT.CHECK);
                Messages.setLanguageText(force_piece, "label.force.piece");
                boolean done = dm_piece.isDone();
                force_piece.setEnabled(!done);
                if (!done) {
                    force_piece.setSelection(picker.isForcePiece(piece_number));
                    force_piece.addSelectionListener(new SelectionAdapter() {

                        @Override
                        public void widgetSelected(SelectionEvent e) {
                            picker.setForcePiece(piece_number, force_piece.getSelection());
                        }
                    });
                }
                final MenuItem reset_piece = new MenuItem(menu, SWT.PUSH);
                Messages.setLanguageText(reset_piece, "label.reset.piece");
                boolean can_reset = dm_piece.isDone() || dm_piece.getNbWritten() > 0;
                reset_piece.setEnabled(can_reset);
                reset_piece.addSelectionListener(new SelectionAdapter() {

                    @Override
                    public void widgetSelected(SelectionEvent e) {
                        dm_piece.reset();
                        if (pe_piece != null) {
                            pe_piece.reset();
                        }
                    }
                });
            }
        }
    });
    fileInfoCanvas.addListener(SWT.Resize, new Listener() {

        @Override
        public void handleEvent(Event e) {
            if (refreshInfoCanvasQueued) {
                return;
            }
            refreshInfoCanvasQueued = true;
            // wrap in asyncexec because sc.setMinWidth (called later) doesn't work
            // too well inside a resize (the canvas won't size isn't always updated)
            Utils.execSWTThreadLater(0, new AERunnable() {

                @Override
                public void runSupport() {
                    if (img != null) {
                        int iOldColCount = img.getBounds().width / BLOCK_SIZE;
                        int iNewColCount = fileInfoCanvas.getClientArea().width / BLOCK_SIZE;
                        if (iOldColCount != iNewColCount)
                            refreshInfoCanvas();
                    }
                }
            });
        }
    });
    sc.setContent(fileInfoCanvas);
    Legend.createLegendComposite(fileInfoComposite, blockColors, new String[] { "FileView.BlockView.Done", "FileView.BlockView.Skipped", "FileView.BlockView.Active", "FileView.BlockView.Outstanding" }, new GridData(SWT.FILL, SWT.DEFAULT, true, false, 2, 1));
    int iFontPixelsHeight = 10;
    int iFontPointHeight = (iFontPixelsHeight * 72) / Utils.getDPIRaw(fileInfoCanvas.getDisplay()).y;
    Font f = fileInfoCanvas.getFont();
    FontData[] fontData = f.getFontData();
    fontData[0].setHeight(iFontPointHeight);
    font = new Font(fileInfoCanvas.getDisplay(), fontData);
    return fileInfoComposite;
}

Example 25 with PEPiece

use of com.biglybt.core.peer.PEPiece in project BiglyBT by BiglySoftware.

the class FileInfoView method refreshInfoCanvas.

protected void refreshInfoCanvas() {
    if (fileInfoCanvas == null || fileInfoCanvas.isDisposed()) {
        return;
    }
    refreshInfoCanvasQueued = false;
    Rectangle bounds = fileInfoCanvas.getClientArea();
    if (bounds.width <= 0 || bounds.height <= 0)
        return;
    if (img != null && !img.isDisposed()) {
        img.dispose();
        img = null;
    }
    DownloadManager download_manager = file == null ? null : file.getDownloadManager();
    DiskManager disk_manager = download_manager == null ? null : download_manager.getDiskManager();
    PEPeerManager peer_manager = download_manager == null ? null : download_manager.getPeerManager();
    if (file == null || disk_manager == null || peer_manager == null) {
        GC gc = new GC(fileInfoCanvas);
        gc.fillRectangle(bounds);
        gc.dispose();
        return;
    }
    int first_piece = file.getFirstPieceNumber();
    int num_pieces = file.getNbPieces();
    int iNumCols = bounds.width / BLOCK_SIZE;
    int iNeededHeight = (((num_pieces - 1) / iNumCols) + 1) * BLOCK_SIZE;
    if (sc.getMinHeight() != iNeededHeight) {
        sc.setMinHeight(iNeededHeight);
        sc.layout(true, true);
        bounds = fileInfoCanvas.getClientArea();
    }
    img = new Image(fileInfoCanvas.getDisplay(), bounds.width, iNeededHeight);
    GC gcImg = new GC(img);
    try {
        gcImg.setBackground(fileInfoCanvas.getBackground());
        gcImg.fillRectangle(0, 0, bounds.width, bounds.height);
        DiskManagerPiece[] dm_pieces = disk_manager.getPieces();
        PEPiece[] pe_pieces = peer_manager.getPieces();
        int iRow = 0;
        int iCol = 0;
        for (int i = first_piece; i < first_piece + num_pieces; i++) {
            DiskManagerPiece dm_piece = dm_pieces[i];
            PEPiece pe_piece = pe_pieces[i];
            int colorIndex;
            int iXPos = iCol * BLOCK_SIZE;
            int iYPos = iRow * BLOCK_SIZE;
            if (dm_piece.isDone()) {
                colorIndex = BLOCKCOLOR_DONE;
            } else if (!dm_piece.isNeeded()) {
                colorIndex = BLOCKCOLOR_SKIPPED;
            } else if (pe_piece != null) {
                colorIndex = BLOCKCOLOR_ACTIVE;
            } else {
                colorIndex = BLOCKCOLOR_NEEDED;
            }
            gcImg.setBackground(blockColors[colorIndex]);
            gcImg.fillRectangle(iXPos, iYPos, BLOCK_FILLSIZE, BLOCK_FILLSIZE);
            iCol++;
            if (iCol >= iNumCols) {
                iCol = 0;
                iRow++;
            }
        }
    } catch (Exception e) {
        Logger.log(new LogEvent(LogIDs.GUI, "drawing piece map", e));
    } finally {
        gcImg.dispose();
    }
    fileInfoCanvas.redraw();
}