Package com.google.gwt.canvas.dom.client

Class CanvasPixelArray

java.lang.Object

com.google.gwt.core.client.JavaScriptObject

com.google.gwt.canvas.dom.client.CanvasPixelArray

public class CanvasPixelArray
extends JavaScriptObject

Array-like object holding the actual image data for an ImageData object. For each pixel, this object contains a red, green, blue and alpha value between 0 and 255 (in this order). Note that we use ints here to represent the data to avoid complexities stemming from bytes being signed in Java.

See Also:

• HTML Canvas 2D CanvasPixelArray

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CanvasPixelArray()

Method Summary

Modifier and Type	Method	Description
final int	get(int i)	Returns the data value at index i.
final int	getLength()	Returns the length of the array.
final void	set(int i, int value)	Sets the data value at position i to the given value.

Methods inherited from class com.google.gwt.core.client.JavaScriptObject

cast, createArray, createArray, createFunction, createObject, equals, hashCode, toSource, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

CanvasPixelArray

protected CanvasPixelArray()

Method Details

get

public final int get(int i)

Returns the data value at index i.

Parameters:

i - the data index

Returns:

the data value

getLength

public final int getLength()

Returns the length of the array.

Returns:

the array length

set

public final void set(int i,
 int value)

Sets the data value at position i to the given value. Most browsers will clamp this value to the range 0...255, but that is not enforced in this implementation.

Parameters:

i - index to set.

value - value to set (use values from 0 to 255)