Examples of org.eclipse.swt.graphics.Image

org.eclipse.swt.graphics.Image
his point, rgbs contains specifications of all // the colors contained within this image. You may // allocate as many of these colors as you wish by // using the Color constructor Color(RGB), then // create the image: Image i = new Image(device, data);
Applications which require even greater control over the image loading process should use the support provided in class ImageLoader.
Application code must explicitly invoke the Image.dispose() method to release the operating system resources managed by each instance when those instances are no longer required.
@see Color @see ImageData @see ImageLoader @see Image snippets @see SWT Examples: GraphicsExample, ImageAnalyzer @see Sample code and further information

    Object ds = cell.getDataSource();
    if (noIconForYou(ds, cell)) {
      return;
    }
    boolean canStream = PlayUtils.canStreamDS(ds, -1);
    Image img = canStream ? imgEnabled : imgDisabled;


    if (!canStream && PlayUtils.canPlayDS(ds, -1)) {
      return;
    }


    Rectangle cellBounds = cell.getBounds();


    if (img != null && !img.isDisposed()) {
      Rectangle imgBounds = img.getBounds();
      gc.drawImage(img, cellBounds.x
          + ((cellBounds.width - imgBounds.width) / 2), cellBounds.y
          + ((cellBounds.height - imgBounds.height) / 2));
    }
  }

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   */
  public ColumnUnopened(String tableID) {
    super(COLUMN_ID, tableID);
    
    if (graphicCheck == null) {
      Image img = ImageLoader.getInstance().getImage("image.unopened");
      graphicCheck = new UISWTGraphicImpl(img);
    }
    if (graphicUnCheck == null) {
      Image img = ImageLoader.getInstance().getImage("image.opened");
      graphicUnCheck = new UISWTGraphicImpl(img);
    }


    if (graphicsProgress == null) {

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    if (isShare) {
      image_name += "_shared";
    }


    ImageLoader imageLoader = ImageLoader.getInstance();
    Image img = imageLoader.getImage(image_name);


    try {
      Rectangle cellBounds = cell.getBounds();
  
      if (img != null && !img.isDisposed()) {
        Rectangle imgBounds = img.getBounds();
        gc.drawImage(img, cellBounds.x
            + ((cellBounds.width - imgBounds.width) / 2), cellBounds.y
            + ((cellBounds.height - imgBounds.height) / 2));
      }
    } finally {

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    // Named infoObj so code can be copied easily to the other PiecesItem
    DownloadManager infoObj = (DownloadManager) cell.getDataSource();
    if (infoObj == null)
      return;


    Image img = (Image) infoObj.getUserData("PiecesImage");
    if (img != null && !img.isDisposed())
      img.dispose();


    infoObj.setUserData("PiecesImageBuffer", null);
    infoObj.setUserData("PiecesImage", null);
  }

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    if (imageBuffer == null || imageBuffer.length != drawWidth) {
      imageBuffer = new int[drawWidth];
      bImageBufferValid = false;
    }


    Image image = (Image) infoObj.getUserData("PiecesImage");
    GC gcImage;
    boolean bImageChanged;
    Rectangle imageBounds;
    if (image == null || image.isDisposed()) {
      bImageChanged = true;
    } else {
      imageBounds = image.getBounds();
      bImageChanged = imageBounds.width != newWidth
          || imageBounds.height != newHeight;
    }
    if (bImageChanged) {
      if (image != null && !image.isDisposed()) {
        image.dispose();
      }
      image = new Image(SWTThread.getInstance().getDisplay(), newWidth,
          newHeight);
      imageBounds = image.getBounds();
      bImageBufferValid = false;


      // draw border
      gcImage = new GC(image);
      gcImage.setForeground(Colors.grey);
      if (borderHorizontalSize > 0) {
        if (borderVerticalSize > 0) {
          gcImage.drawRectangle(0, 0, newWidth - 1, newHeight - 1);
        } else {
          gcImage.drawLine(0, 0, newWidth - 1, 0);
          gcImage.drawLine(0, newHeight - 1, newWidth - 1, newHeight - 1);
        }
      } else if (borderVerticalSize > 0) {
        gcImage.drawLine(0, 0, 0, newHeight - 1);
        gcImage.drawLine(newWidth - 1, 0, newWidth - 1, newHeight - 1);
      }


      if (borderSplit > 0) {
        gcImage.setForeground(Colors.white);
        gcImage.drawLine(x0, completionHeight + borderHorizontalSize, x1,
            completionHeight + borderHorizontalSize);
      }
    } else {
      gcImage = new GC(image);
    }


    DiskManager disk_manager = infoObj.getDiskManager();


    DiskManagerPiece[] pieces = disk_manager == null ? null
        : disk_manager.getPieces();


    int nbPieces = infoObj.getNbPieces();


    try {


      int nbComplete = 0;
      int a0;
      int a1 = 0;
      for (int i = 0; i < drawWidth; i++) {
        if (i == 0) {
          // always start out with one piece
          a0 = 0;
          a1 = nbPieces / drawWidth;
          if (a1 == 0)
            a1 = 1;
        } else {
          // the last iteration, a1 will be nbPieces
          a0 = a1;
          a1 = ((i + 1) * nbPieces) / (drawWidth);
        }


        int index;


        if (a1 <= a0) {
          index = imageBuffer[i - 1];
        } else {
          int nbAvailable = 0;
          for (int j = a0; j < a1; j++)
            if (pieces != null && pieces[j].isDone())
              nbAvailable++;
          nbComplete += nbAvailable;
          index = (nbAvailable * Colors.BLUES_DARKEST) / (a1 - a0);
          //System.out.println("i="+i+";nbAvailable="+nbAvailable+";nbComplete="+nbComplete+";nbPieces="+nbPieces+";a0="+a0+";a1="+a1);
        }


        if (!bImageBufferValid || imageBuffer[i] != index) {
          imageBuffer[i] = index;
          bImageChanged = true;
          gcImage.setForeground(index == INDEX_COLOR_NONEAVAIL ? Colors.red
              : Colors.blues[index]);
          gcImage.drawLine(i + x0, y0, i + x0, y1);
        }
      }


      // pieces can sometimes be 0 due to timing or bad torrent (well, there's a bug with a /0 error
      // so it can happen somehow :)


      int limit = nbPieces == 0 ? 0 : ((drawWidth * nbComplete) / nbPieces);


      if (limit < drawWidth) {
        gcImage.setBackground(Colors.blues[Colors.BLUES_LIGHTEST]);
        gcImage.fillRectangle(limit + x0, borderHorizontalSize, x1 - limit,
            completionHeight);
      }


      gcImage.setBackground(Colors.colorProgressBar);
      gcImage.fillRectangle(x0, borderHorizontalSize, limit, completionHeight);
    } catch (Exception e) {
      System.out.println("Error Drawing PiecesItem");
      Debug.printStackTrace(e);
    }
    gcImage.dispose();


    Image oldImage = null;
    Graphic graphic = cell.getGraphic();
    if (graphic instanceof UISWTGraphic) {
      oldImage = ((UISWTGraphic) graphic).getImage();
    }
    if (bImageChanged || image != oldImage || !cell.isValid()) {

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      final int  PAD_LEFT  = 10;


      int usable_width   = bounds.width - PAD_LEFT - PAD_RIGHT;
      int usable_height  = bounds.height - PAD_TOP - PAD_BOTTOM;


      Image image = new Image( canvas.getDisplay(), bounds );


      GC gc = new GC( image );


      try {
        gc.setAntialias( SWT.ON );

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          && (cell instanceof TableCellSWT)) {
        String path = dm.getDownloadState().getPrimaryFile();
        if (path != null) {
          // Don't ever dispose of PathIcon, it's cached and may be used elsewhere
          TOTorrent torrent = dm.getTorrent();
          Image icon = ImageRepository.getPathIcon(path, false, torrent != null
              && !torrent.isSimpleTorrent());
          ((TableCellSWT) cell).setIcon(icon);
        }
      }
    }

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  private void disposeCellIcon(TableCell cell) {
    if (!(cell instanceof TableCellSWT)) {
      return;
    }
    final Image img = ((TableCellSWT) cell).getIcon();
    if (img != null) {
      ((TableCellSWT) cell).setIcon(null);
      if (!img.isDisposed()) {
        img.dispose();
      }
    }
  }

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    if (img != null && !img.isDisposed()) {
      img.dispose();
    }
    
    img = new Image(display,size);
    
    GC gc = new GC(img);    
    
    gc.setForeground(white);
    gc.setBackground(white);

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    if (img != null && !img.isDisposed()) {
      img.dispose();
    }
    
    img = new Image(display,size);
    GC gc = new GC(img);
    
    Color white = ColorCache.getColor(display,255,255,255);
    gc.setForeground(white);
    gc.setBackground(white);

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