org.zaval.lw
Class LwPaintManImpl

java.lang.Object
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  +--org.zaval.lw.LwPaintManager
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        +--org.zaval.lw.LwPaintManImpl

All Implemented Interfaces:

LwManager

public class LwPaintManImpl

extends LwPaintManager

This class is implementation of the LwPaintManager for the library. The implementation supports:

• Double buffering.
• Light weight component views painting.

Constructor Summary

LwPaintManImpl()
Constructs the paint manager.

Method Summary

void	dispose()
protected void	paintComponent(java.awt.Graphics g, LwComponent c) The method is called to paint the specified component.
protected void	paintOnTop(java.awt.Graphics g, LwContainer c) Probably will be redesigned
protected void	rootPaint(java.awt.Graphics g, LwComponent c) The method initiates painting process for the specified root light weight component using the graphics.
protected void	updateComponent(java.awt.Graphics g, LwComponent c) The method is called to update the specified component.
void	useDoubleBuffer(boolean b) Enables or disables double buffering.

Methods inherited from class org.zaval.lw.LwPaintManager

paint, repaint, repaint

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LwPaintManImpl

public LwPaintManImpl()

Constructs the paint manager.

Method Detail

useDoubleBuffer

public void useDoubleBuffer(boolean b)

Enables or disables double buffering. The double buffering is used to increase painting performance but it needs memory.

Parameters:

b - true to enable double buffering; false otherwise.

dispose

public void dispose()

rootPaint

protected void rootPaint(java.awt.Graphics g,
                         LwComponent c)

The method initiates painting process for the specified root light weight component using the graphics. The method has to be used with a light weight root component implementation to start painting process. The method is overrided to support double buffering.

Overrides:

rootPaint in class LwPaintManager

Parameters:

g - the specified graphics.

c - the specified root lightweight component.

updateComponent

protected void updateComponent(java.awt.Graphics g,
                               LwComponent c)

The method is called to update the specified component. The updating process can be occured with the following two ways:

• If the component has a view manager and the manager defines a background view, than the view will be used to fill the component background.
• If the component has not any view manager or the manager doesn't define a background view, than the method fills the component with its background color.

After that the method calls update method of the component.

Overrides:

updateComponent in class LwPaintManager

Parameters:

g - the specified graphics.

c - the specified lightweight component to be updated.

paintComponent

protected void paintComponent(java.awt.Graphics g,
                              LwComponent c)

The method is called to paint the specified component. The method uses the border and face views that can be provided with a view manager of the specified component to paint the component.

Overrides:

paintComponent in class LwPaintManager

Parameters:

g - the specified graphics.

c - the specified lightweight component to be painted.

paintOnTop

protected void paintOnTop(java.awt.Graphics g,
                          LwContainer c)

Description copied from class: LwPaintManager

Probably will be redesigned

Overrides:

paintOnTop in class LwPaintManager