org.zaval.lw
Class LwCompRender

java.lang.Object
  |
  +--org.zaval.lw.LwView
        |
        +--org.zaval.lw.LwRender
              |
              +--org.zaval.lw.LwCompRender

All Implemented Interfaces:

Validationable

public class LwCompRender

extends LwRender

The class implements lightweight component render interface that provides ability to render a lightweight component (the component should be used as a target for the render).

Fields inherited from class org.zaval.lw.LwView

MOSAIC, ORIGINAL, STRETCH

 

Constructor Summary

LwCompRender(LwComponent c)           Constructs the render with the specified target light weight component.

 

Method Summary
protected  java.awt.Dimension	calcPreferredSize()           Calculates and returns the view preferred size.
void	paint(java.awt.Graphics g, int x, int y, int w, int h, Layoutable d)           Paints the view using the given width and height.
protected  void	recalc()           Invoked by the validate method if the view is invalid.

 

Methods inherited from class org.zaval.lw.LwRender

getTarget, setTarget, targetWasChanged

 

Methods inherited from class org.zaval.lw.LwView

getBottom, getLeft, getPreferredSize, getRight, getTop, getType, invalidate, isValid, ownerChanged, paint, setType, validate

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

LwCompRender

public LwCompRender(LwComponent c)

Constructs the render with the specified target light weight component.

Parameters:

c - the target light weight component to be rendered.

calcPreferredSize

protected java.awt.Dimension calcPreferredSize()

Calculates and returns the view preferred size. The method has not to use the view insets to compute the preferred size (this is named "pure" preferred size). The method returns the target light weight component preferred size if it is defined.

Overrides:

calcPreferredSize in class LwView

Returns:

a "pure" preferred size of the view.

recalc

protected void recalc()

Invoked by the validate method if the view is invalid. The method is used to calculate metrical characteristics of the view and the method is called only if it is necessary, so there you don't need to care about superfluous calling and computing.

Overrides:

recalc in class LwView

paint

public void paint(java.awt.Graphics g,
                  int x,
                  int y,
                  int w,
                  int h,
                  Layoutable d)

Paints the view using the given width and height. The location where the view has to be painted is determined with x and y coordinates.

Overrides:

paint in class LwView

Parameters:

g - the specified context to be used for painting.

x - the x coordinate.

y - the y coordinate.

w - the width of the view.

h - the height of the view.

d - the owner component.