ImageData (Google Web Toolkit Javadoc)

java.lang.Object
- com.google.gwt.core.client.JavaScriptObject
- - com.google.gwt.canvas.dom.client.ImageData

```
public class ImageData
extends JavaScriptObject
```
Object that holds image data and a size.

See Also:
HTML Canvas 2D ImageData

Constructor Summary

Constructors
Modifier Constructor and Description

protected ImageData()

Constructors
Modifier	Constructor and Description
`protected`	`ImageData()`

Method Summary

Methods
Modifier and Type	Method and Description
`int`	`getAlphaAt(int x, int y)` Returns the alpha value at position (x,y).
`int`	`getBlueAt(int x, int y)` Returns the blue value at position (x,y).
`CanvasPixelArray`	`getData()` Returns a canvas pixel array of size width * height * 4.
`int`	`getGreenAt(int x, int y)` Returns the green value at position (x,y).
`int`	`getHeight()` Returns the height of this image data object.
`int`	`getRedAt(int x, int y)` Returns the red value at position (x,y).
`int`	`getWidth()` Returns the width of this image data object.
`void`	`setAlphaAt(int alpha, int x, int y)` Sets the alpha value at position (x,y).
`void`	`setBlueAt(int blue, int x, int y)` Sets the blue value at position (x,y).
`void`	`setGreenAt(int green, int x, int y)` Sets the green value at position (x,y).
`void`	`setRedAt(int red, int x, int y)` Sets the red value at position (x,y).

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 Detail
  - ImageData
```
protected ImageData()
```
- Method Detail
  - getAlphaAt
```
public final int getAlphaAt(int x,
             int y)
```
    Returns the alpha value at position (x,y).
    
    Parameters:
    x - the x coordinate
    y - the y coordinate
    
    Returns:
    the alpha value at position (x,y), or 0 if not in the image
    See Also:
    setAlphaAt(int, int, int), getColorAt(int, int, int)
  - getBlueAt
```
public final int getBlueAt(int x,
            int y)
```
    Returns the blue value at position (x,y).
    
    Parameters:
    x - the x coordinate
    y - the y coordinate
    
    Returns:
    the blue value at position (x,y), or 0 if not in the image
    See Also:
    setBlueAt(int, int, int), getColorAt(int, int, int)
  - getData
```
public final CanvasPixelArray getData()
```
    Returns a canvas pixel array of size width * height * 4.
    
    Returns:
    a CanvasPixelArray object
  - getGreenAt
```
public final int getGreenAt(int x,
             int y)
```
    Returns the green value at position (x,y).
    
    Parameters:
    x - the x coordinate
    y - the y coordinate
    
    Returns:
    the green value at position (x,y), or 0 if not in the image
    See Also:
    setGreenAt(int, int, int), getColorAt(int, int, int)
  - getHeight
```
public final int getHeight()
```
    Returns the height of this image data object.
    
    Returns:
    the image height as an int
  - getRedAt
```
public final int getRedAt(int x,
           int y)
```
    Returns the red value at position (x,y).
    
    Parameters:
    x - the x coordinate
    y - the y coordinate
    
    Returns:
    the red value at position (x,y), or 0 if not in the image
    See Also:
    setRedAt(int, int, int), getColorAt(int, int, int)
  - getWidth
```
public final int getWidth()
```
    Returns the width of this image data object.
    
    Returns:
    the image width as an int
  - setAlphaAt
```
public final void setAlphaAt(int alpha,
              int x,
              int y)
```
    Sets the alpha value at position (x,y).
    
    Parameters:
    alpha - the alpha value
    x - the x coordinate
    y - the y coordinate
    See Also:
    getAlphaAt(int, int), getColorAt(int, int, int)
  - setBlueAt
```
public final void setBlueAt(int blue,
             int x,
             int y)
```
    Sets the blue value at position (x,y).
    
    Parameters:
    blue - the blue value
    x - the x coordinate
    y - the y coordinate
    See Also:
    getBlueAt(int, int), getColorAt(int, int, int)
  - setGreenAt
```
public final void setGreenAt(int green,
              int x,
              int y)
```
    Sets the green value at position (x,y).
    
    Parameters:
    green - the green value
    x - the x coordinate
    y - the y coordinate
    See Also:
    getGreenAt(int, int), getColorAt(int, int, int)
  - setRedAt
```
public final void setRedAt(int red,
            int x,
            int y)
```
    Sets the red value at position (x,y).
    
    Parameters:
    red - the red value
    x - the x coordinate
    y - the y coordinate
    See Also:
    getRedAt(int, int), getColorAt(int, int, int)

Class ImageData

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Constructor Detail

ImageData

Method Detail

getAlphaAt

getBlueAt

getData

getGreenAt

getHeight

getRedAt

getWidth

setAlphaAt

setBlueAt

setGreenAt

setRedAt