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Class como.awt.ImageButton

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----como.awt.ImageButton

public class ImageButton

extends Canvas

ImageButton(Image, Image, int, int)

Construct an image button.

ImageButton(int, int, String)

getState()

Get the current state of the switch! (if it's a button you will get true if it's currently pressed).

gotFocus(Event, Object)

imageUpdate(Image, int, int, int, int, int)

Tell me all about the image ;-) (inspired from Component.java)

keyDown(Event, int)

Move the focus to the next component Does NOT work! (cause nextFocus() doesn't do what I wanted)

lostFocus(Event, Object)

minimumSize()

tell my minimum-size

mouseDown(Event, int, int)

handle the MouseDownEvents.

mouseUp(Event, int, int)

handle the MouseUpEvent.

paint(Graphics)

Draws the picture on the screen (if parts are loaded, then it draws those parts).

preferredSize()

tell my preferred-size

sendEvent()

This delivers the Event to the parent.

setImages(Image, Image)

Here you may change the pictures used in the button.

setNoPush(boolean)

Here you can set, if you want the button to be pushed down, if someone clicks or not.

setState(boolean)

Set the current state of the switch! (If it is a button then do nothing!)

setSwitch(boolean)

Make it a Switch instead of a Button.

  public ImageButton(Image normal,
                     Image pressed,
                     int w,
                     int h)

Construct an image button. We have two states: Normal and pressed. They both must be non-null. Then you must specify the width and height of the button. (May be different from the ■icture's size and the picture will be loaded asynchronously!)

  public ImageButton(int w,
                     int h,
                     String text)

  public void setImages(Image normal,
                        Image pressed)

Here you may change the pictures used in the button.

  public void setSwitch(boolean sw)

Make it a Switch instead of a Button. Now the user can press the switch and it's on or off then! You will get an action-message that the state changed. Get state with getState().

  public void setNoPush(boolean np)

Here you can set, if you want the button to be pushed down, if someone clicks or not. (Usefull if you just want to display a picture!)

  public void setState(boolean onoff)

Set the current state of the switch! (If it is a button then do nothing!)

Parameters:

onoff - indicating on or off

  public boolean getState()

Get the current state of the switch! (if it's a button you will get true if it's currently pressed).

Returns:

if the switch is on then return true; else false.

  public boolean keyDown(Event evt,
                         int key)

Move the focus to the next component Does NOT work! (cause nextFocus() doesn't do what I wanted)

Overrides:

keyDown in class Component

  public void sendEvent()

This delivers the Event to the parent.

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

handle the MouseDownEvents.

Overrides:

mouseDown in class Component

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

handle the MouseUpEvent.

Overrides:

mouseUp in class Component

  public void paint(Graphics graphics)

Draws the picture on the screen (if parts are loaded, then it draws those parts). Overrides paint-Method.

Overrides:

paint in class Canvas

  public Dimension preferredSize()

tell my preferred-size

Overrides:

preferredSize in class Component

  public Dimension minimumSize()

tell my minimum-size

Overrides:

minimumSize in class Component

  public boolean gotFocus(Event evt,
                          Object what)

Overrides:

gotFocus in class Component

  public boolean lostFocus(Event evt,
                           Object what)

Overrides:

lostFocus in class Component

  public boolean imageUpdate(Image img,
                             int flags,
                             int x,
                             int y,
                             int w,
                             int h)

Tell me all about the image ;-) (inspired from Component.java)

Overrides:

imageUpdate in class Component

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