org.zaval.lw
Class LwCompRender

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

All Implemented Interfaces:

Validationable

public class LwCompRender

extends LwRender

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

Fields inherited from class org.zaval.lw.LwView

MOSAIC, ORIGINAL, STRETCH

Fields inherited from class org.zaval.util.ValidationObject

isValidFlag

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, Drawable d) Paints the view using the given width and height.
protected void	recalc() Invoked with 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

getInsets, getPreferredSize, getType, ownerChanged, paint, setType

Methods inherited from class org.zaval.util.ValidationObject

invalidate, isValid, 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.

Method Detail

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 prefered size if it is defined.

Overrides:

calcPreferredSize in class LwView

Returns:

a "pure" preferred size of the view.

recalc

protected void recalc()

Invoked with 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 realy necessary, so there is not necessaty 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,
                  Drawable 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.