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Class tropo.awt.TRBufferedCanvas 

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----tropo.awt.TRBufferedCanvas
public abstract class TRBufferedCanvas
extends Canvas
Copyright (c) 1997-1998 Tropo. All Rights Reserved.

Buffered, offscreen, flicker-free drawing for a canvas.

Variable Index

o o
For debugging.

Constructor Index

o TRBufferedCanvas()
o TRBufferedCanvas(int, int)
No direct newing.

Method Index

o draw(Graphics)
Dervied classes must override this and do the real work of drawing an image.
o invalidate()
Not really needed but in for completeness.
o minimumSize()
o paint(Graphics)
o preferredSize()
o setSize(int, int)
o update(Graphics)

Variables

o o 
 protected static final PrintStream o
For debugging.

Constructors

o TRBufferedCanvas 
 protected TRBufferedCanvas(int w,
                            int h)
No direct newing.

o TRBufferedCanvas 
 protected TRBufferedCanvas()

Methods

o setSize 
 public void setSize(int w,
                     int h)
Overrides:
setSize in class Component
o minimumSize 
 public final Dimension minimumSize()
Overrides:
minimumSize in class Component
o preferredSize 
 public final Dimension preferredSize()
Overrides:
preferredSize in class Component
o update 
 public final void update(Graphics g)
Overrides:
update in class Component
o paint 
 public final void paint(Graphics g)
Overrides:
paint in class Canvas
o invalidate 
 public void invalidate()
Not really needed but in for completeness.

Overrides:
invalidate in class Component
o draw 
 protected abstract void draw(Graphics g)
Dervied classes must override this and do the real work of drawing an image. 

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