Examples of java.awt.image.BufferedImage

java.awt.image.BufferedImage
The BufferedImage subclass describes an {@link java.awt.Image Image} with an accessible buffer of image data.A BufferedImage is comprised of a {@link ColorModel} and a{@link Raster} of image data.The number and types of bands in the {@link SampleModel} of theRaster must match the number and types required by the ColorModel to represent its color and alpha components. All BufferedImage objects have an upper left corner coordinate of (0, 0). Any Raster used to construct a BufferedImage must therefore have minX=0 and minY=0.
This class relies on the data fetching and setting methods of Raster, and on the color characterization methods of ColorModel. @see ColorModel @see Raster @see WritableRaster @version 10 Feb 1997

    final Rectangle2D dataArea = getDataAreaOffset();
    final Rectangle2D otherArea = new Rectangle2D.Double();


    if ((ObjectUtilities.equal(bounds, this.bounds)) == false)
    {
      final BufferedImage image = new BufferedImage(1, 1, BufferedImage.TYPE_4BYTE_ABGR);
      final Graphics2D graphics = image.createGraphics();
      draw(graphics, bounds);
      graphics.dispose();
    }


    final ImageMap map = new ImageMap();

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       JButton button = null;
       if (imageResourceName != null) {
            InputStream inputStream = resourceClass.getResourceAsStream(imageResourceName);
            if (inputStream != null) {
                try {
                    BufferedImage image = ImageIO.read(inputStream);


                    button = new BorderlessImageButton( action, new ImageIcon(image) );
                }
                catch (IOException e) {
                    LOGGER.error("Reading image " + imageResourceName, e);

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   public static ImageIcon getImageIcon( Class resourceClass, String imageResourceName )
   {
      InputStream inputStream = resourceClass.getResourceAsStream(imageResourceName);
      if (inputStream != null) {
          try {
              BufferedImage image = ImageIO.read(inputStream);
              return new ImageIcon( image );
             }
          catch (IOException e) {
              LOGGER.error("Reading image " + imageResourceName, e);
          }

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    return Math.min(max_size.width, max_size.height);
  }


  /** Native cursor handles */
  public static Cursor createCursor(int width, int height, int xHotspot, int yHotspot, int numImages, IntBuffer images, IntBuffer delays) throws LWJGLException {
    BufferedImage cursor_image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    int[] pixels = new int[images.remaining()];
    int old_position = images.position();
    images.get(pixels);
    images.position(old_position);
    cursor_image.setRGB(0, 0, width, height, pixels, 0, width);
    return Toolkit.getDefaultToolkit().createCustomCursor(cursor_image, new Point(xHotspot, yHotspot), "LWJGL Custom cursor");
  }

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        Texture texture = new Texture(target,textureID);


        // bind this texture
        glBindTexture(target, textureID);


        BufferedImage bufferedImage = loadImage(resourceName);
        texture.setWidth(bufferedImage.getWidth());
        texture.setHeight(bufferedImage.getHeight());


        if (bufferedImage.getColorModel().hasAlpha()) {
            srcPixelFormat = GL_RGBA;
        } else {
            srcPixelFormat = GL_RGB;
        }


        // convert that image into a byte buffer of texture data
        ByteBuffer textureBuffer = convertImageData(bufferedImage,texture);


        if (target == GL_TEXTURE_2D) {
            glTexParameteri(target, GL_TEXTURE_MIN_FILTER, minFilter);
            glTexParameteri(target, GL_TEXTURE_MAG_FILTER, magFilter);
        }


        // produce a texture from the byte buffer
        glTexImage2D(target,
                      0,
                      dstPixelFormat,
                      get2Fold(bufferedImage.getWidth()),
                      get2Fold(bufferedImage.getHeight()),
                      0,
                      srcPixelFormat,
                      GL_UNSIGNED_BYTE,
                      textureBuffer );

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     * @return A buffer containing the data
     */
    private ByteBuffer convertImageData(BufferedImage bufferedImage,Texture texture) {
        ByteBuffer imageBuffer;
        WritableRaster raster;
        BufferedImage texImage;


        int texWidth = 2;
        int texHeight = 2;


        // find the closest power of 2 for the width and height
        // of the produced texture
        while (texWidth < bufferedImage.getWidth()) {
            texWidth *= 2;
        }
        while (texHeight < bufferedImage.getHeight()) {
            texHeight *= 2;
        }


        texture.setTextureHeight(texHeight);
        texture.setTextureWidth(texWidth);


        // create a raster that can be used by OpenGL as a source
        // for a texture
        if (bufferedImage.getColorModel().hasAlpha()) {
            raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,texWidth,texHeight,4,null);
            texImage = new BufferedImage(glAlphaColorModel,raster,false,new Hashtable());
        } else {
            raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,texWidth,texHeight,3,null);
            texImage = new BufferedImage(glColorModel,raster,false,new Hashtable());
        }


        // copy the source image into the produced image
        Graphics g = texImage.getGraphics();
        g.setColor(new Color(0f,0f,0f,0f));
        g.fillRect(0,0,texWidth,texHeight);
        g.drawImage(bufferedImage,0,0,null);


        // build a byte buffer from the temporary image
        // that be used by OpenGL to produce a texture.
        byte[] data = ((DataBufferByte) texImage.getRaster().getDataBuffer()).getData();


        imageBuffer = ByteBuffer.allocateDirect(data.length);
        imageBuffer.order(ByteOrder.nativeOrder());
        imageBuffer.put(data, 0, data.length);
        imageBuffer.flip();

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        // due to an issue with ImageIO and mixed signed code
        // we are now using good oldfashioned ImageIcon to load
        // images and the paint it on top of a new BufferedImage
        Image img = new ImageIcon(url).getImage();
        BufferedImage bufferedImage = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB);
        Graphics g = bufferedImage.getGraphics();
        g.drawImage(img, 0, 0, null);
        g.dispose();


        return bufferedImage;
    }

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                                 final double deviceScaleFactor) throws UnsupportedEncoderException, IOException
  {
    final int imageWidth = (int) StrictGeomUtility.toExternalValue(width);
    final int imageHeight = (int) StrictGeomUtility.toExternalValue(height);
    // first clip.
    final BufferedImage bi = ImageUtils.createTransparentImage(imageWidth, imageHeight);
    final Graphics2D graphics = (Graphics2D) bi.getGraphics();
    graphics.scale(deviceScaleFactor, deviceScaleFactor);


    if (image instanceof BufferedImage)
    {
      if (graphics.drawImage(image, null, null) == false)

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  /**
   * @see Graphics2D#drawImage(BufferedImage, BufferedImageOp, int, int)
   */
  public void drawImage(final BufferedImage img, final BufferedImageOp op, final int x, final int y)
  {
    BufferedImage result = img;
    if (op != null)
    {
      result = op.createCompatibleDestImage(img, img.getColorModel());
      result = op.filter(img, result);
    }

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   * @noinspection UseOfObsoleteCollectionType
   * @see Graphics2D#drawRenderedImage(RenderedImage, AffineTransform)
   */
  public void drawRenderedImage(final RenderedImage img, final AffineTransform xform)
  {
    final BufferedImage image;
    if (img instanceof BufferedImage)
    {
      image = (BufferedImage) img;
    }
    else
    {
      final ColorModel cm = img.getColorModel();
      final int width = img.getWidth();
      final int height = img.getHeight();
      final WritableRaster raster = cm.createCompatibleWritableRaster(width, height);
      final boolean isAlphaPremultiplied = cm.isAlphaPremultiplied();
      final Hashtable properties = new Hashtable();
      final String[] keys = img.getPropertyNames();
      if (keys != null)
      {
        final int keyCount = keys.length;
        for (int i = 0; i < keyCount; i++)
        {
          properties.put(keys[i], img.getProperty(keys[i]));
        }
      }
      final BufferedImage result = new BufferedImage(cm, raster, isAlphaPremultiplied, properties);
      img.copyData(raster);
      image = result;
    }
    drawImage(image, xform, null);
  }

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