jcontrol.ui.vole
Class Slider

java.lang.Object
  jcontrol.ui.vole.Component
      jcontrol.ui.vole.Slider

public class Slider
extends Component

This is a graphical slider for JControl. The slider can be moved virtually left or right to simulate analog input.

(c) Copyright 2003-2005 DOMOLOGIC GmbH

Version:

1.1

Author:

Marcus Timmermann, Wolfgang Klingauf

Field Summary

Fields inherited from class jcontrol.ui.vole.Component

eventQueue, focusOwner, font, g, height, listener, parent, visible, width, x, y

Constructor Summary

Slider(int x, int y, int width, int min, int max)
Constructs a slider and sets bounds.

Slider(int x, int y, int width, int min, int max, int step)
Constructs a slider and sets bounds.

Method Summary

int	getValue() Get slider value.
boolean	onKeyEvent(KeyEvent event) Handle KeyEvents.
void	paint() Repaint the Slider.
void	setActionListener(ActionListener listener) Add an ActionListener to the button.
void	setValue(int value) Set the slider value.

Methods inherited from class jcontrol.ui.vole.Component

getBounds, getParent, isVisible, onActionEvent, remove, removeFocus, requestFocus, setBounds, setFont, setGraphics, setParent, setVisible, transferFocus, validate

Methods inherited from class java.lang.Object

clone, equals, notifyAll, wait

Constructor Detail

Slider

public Slider(int x,
              int y,
              int width,
              int min,
              int max)

Constructs a slider and sets bounds.

Parameters:

x - the upper left x coordinate.

y - the upper left y coordinate.

min - the slider's minimum value (>= 0)

max - the slider's maximum value.

step - slider value is incremented by step when KEY_SELECT is activated

Slider

public Slider(int x,
              int y,
              int width,
              int min,
              int max,
              int step)

Constructs a slider and sets bounds.

Parameters:

x - the upper left x coordinate.

y - the upper left y coordinate.

min - the slider's minimum value (>= 0)

max - the slider's maximum value.

step - slider value is incremented by step when KEY_SELECT is activated

Method Detail

getValue

public int getValue()

Get slider value.

Returns:

int The current value.

onKeyEvent

public boolean onKeyEvent(KeyEvent event)

Handle KeyEvents.

Overrides:

onKeyEvent in class Component

Parameters:

event - the KeyEvent

Returns:

If this method returns true, the KeyEvent is handled by the super Container.

See Also:

Component.onKeyEvent(KeyEvent)

paint

public void paint()

Repaint the Slider.

Overrides:

paint in class Component

setActionListener

public void setActionListener(ActionListener listener)

Add an ActionListener to the button. It will receive ActionEvents when the slider is moved. The current value is represented as String and can be read using the ActionEvent.getActionCommand() method.

Parameters:

listener - The new ActionListener or null.

setValue

public void setValue(int value)

Set the slider value.

Parameters:

value - The new value.