Java Foundation Classes in a Nutshell

Hierar chy: Object→ ColorModel(Transparency)→ PackedColorModel

Subc lasses: DirectColorModel

PixelGrabber Ja va 1.0

java.awt.image PJ1.1

This class is an ImageConsumer that extracts a specified rectangular array of pixels (in the

default RGB color model) from a specified Image or ImageProducer and stores them in a

specified array (using the specified offset into the array and specified scanline size).

Use this class when you want to inspect or manipulate the data of an image or some

rectangular portion of an image.

The method grabPixels() makes the PixelGrabber start grabbing pixels. status() retur ns the

status of the pixel-grabbing process. The retur n value uses the same flag value con-

stants that the ImageObser ver class does. The remaining methods are the standard Image-

Consumer methods and should not be called directly.

public class PixelGrabber implements ImageConsumer {

// Public Constructors

1.1 public PixelGrabber(Image img, int x, int y, int w, int h, boolean forceRGB);

public PixelGrabber(ImageProducer ip, int x, int y, int w, int h, int[ ] pix, int off, int scansize);

public PixelGrabber(Image img, int x, int y, int w, int h, int[ ] pix, int off, int scansize);

// Property Accessor Methods (by property name)

synchronized1.1 public ColorModel getColorModel();

Implements:ImageConsumer emptypublic void setColorModel(ColorModel model);

synchronized1.1 public int getHeight();

synchronized1.1