Class ImageCanvas

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----ImageCanvas

public class ImageCanvas

extends Canvas

ImageCanvas is a Canvas that holds an Image. The Image can be switched, but ImageCanvas assumes all Images have the same dimensions of the first image.

ImageCanvas()

This is provided for convenience only.

ImageCanvas(ImageCanvasEventHandler, Image)

Creates an ImageCanvas with the specified event handler and initial image.

draw()

Draws the ImageCanvas

minimumSize()

mouseDown(Event, int, int)

Handles a mouseDown event by calling the ImageCanvas' callback (set in the constructor).

mouseUp(Event, int, int)

Doesn't do anything right now

paint(Graphics)

preferredSize()

setImage(Image)

Sets the ImageCanvas to a new Image.

 public ImageCanvas()

This is provided for convenience only. ImageCanvas objects must be initialized by calling a constructor that has parameters.

 public ImageCanvas(ImageCanvasEventHandler handler,
                    Image image)

Creates an ImageCanvas with the specified event handler and initial image.

Parameters:

handler - a callback function that handles events generated by this ImageCanvas

Image - initial Image to be displayed. All subsequent Images set with setImage should have the same dimensions.

 public Dimension preferredSize()

Overrides:

preferredSize in class Component

 public Dimension minimumSize()

Overrides:

minimumSize in class Component

 public void paint(Graphics g)

Overrides:

paint in class Canvas

 public void draw()

Draws the ImageCanvas

 public void setImage(Image image)

Sets the ImageCanvas to a new Image. This should have the same dimensions as the initial Image.

 public boolean mouseDown(Event event,
                          int x,
                          int y)

Handles a mouseDown event by calling the ImageCanvas' callback (set in the constructor).

Overrides:

mouseDown in class Component

 public boolean mouseUp(Event event,
                        int x,
                        int y)

Doesn't do anything right now

Overrides:

mouseUp in class Component