BeanShell 2.0b5 · bsh.util.BshCanvas

public Class BshCanvas

Scriptable Canvas with buffered graphics. Provides a Component that: 1) delegates calls to paint() to a bsh method called paint() in a specific NameSpace. 2) provides a simple buffered image maintained by built in paint() that is useful for simple immediate procedural rendering from scripts...

Modifier and Type	Field and Description
pack-priv Image	imageBuffer
pack-priv This	ths

Modifier and Type

Field and Description

pack-priv Image

imageBuffer

pack-priv This

ths

Constructor Summary

Access	Constructor and Description
public	BshCanvas()
public	BshCanvas(This ths)

Modifier and Type	Method and Description
public Graphics	getBufferedGraphics() Get a buffered (persistent) image for drawing on this component
public void	paintComponent(Graphics the `Graphics` object to protect g) Overrides javax.swing.JComponent.paintComponent. Calls the UI delegate's paint method, if the UI delegate is non-`null`.
public void	setBounds(int the new x-coordinate of this component x, int the new y-coordinate of this component y, int the new `width` of this component width, int the new `height` of this component height) Overrides java.awt.Component.setBounds. Moves and resizes this component.

Modifier and Type

Method and Description

public Graphics

getBufferedGraphics()

Get a buffered (persistent) image for drawing on this component

public void

paintComponent(Graphics

the Graphics object to protect

Overrides javax.swing.JComponent.paintComponent.

Calls the UI delegate's paint method, if the UI delegate is non-null.

public void

setBounds(int

the new x-coordinate of this component

x, int

the new y-coordinate of this component

y, int

the new width of this component

width, int

the new height of this component

height)

Overrides java.awt.Component.setBounds.

Moves and resizes this component.

Field Detail

imageBuffer	back to summary
pack-priv Image imageBuffer

ths	back to summary
pack-priv This ths

Constructor Detail

BshCanvas	back to summary
public BshCanvas()

BshCanvas	back to summary
public BshCanvas(This ths)

Method Detail

getBufferedGraphics	back to summary
public Graphics getBufferedGraphics() Get a buffered (persistent) image for drawing on this component

paintComponent back to summary

paintComponent	back to summary
public void paintComponent(Graphics g) Overrides javax.swing.JComponent.paintComponent. Doc from javax.swing.JComponent.paintComponent. Calls the UI delegate's paint method, if the UI delegate is non-`null`. We pass the delegate a copy of the `Graphics` object to protect the rest of the paint code from irrevocable changes (for example, `Graphics.translate`). If you override this in a subclass you should not make permanent changes to the passed in `Graphics`. For example, you should not alter the clip `Rectangle` or modify the transform. If you need to do these operations you may find it easier to create a new `Graphics` from the passed in `Graphics` and manipulate it. Further, if you do not invoke super's implementation you must honor the opaque property, that is if this component is opaque, you must completely fill in the background in an opaque color. If you do not honor the opaque property you will likely see visual artifacts. The passed in `Graphics` object might have a transform other than the identify transform installed on it. In this case, you might get unexpected results if you cumulatively apply another transform. Parameters g:Graphics the `Graphics` object to protect

public void paintComponent(Graphics g)

Overrides javax.swing.JComponent.paintComponent.

Doc from javax.swing.JComponent.paintComponent.

Calls the UI delegate's paint method, if the UI delegate is non-null. We pass the delegate a copy of the Graphics object to protect the rest of the paint code from irrevocable changes (for example, Graphics.translate).

If you override this in a subclass you should not make permanent changes to the passed in Graphics. For example, you should not alter the clip Rectangle or modify the transform. If you need to do these operations you may find it easier to create a new Graphics from the passed in Graphics and manipulate it. Further, if you do not invoke super's implementation you must honor the opaque property, that is if this component is opaque, you must completely fill in the background in an opaque color. If you do not honor the opaque property you will likely see visual artifacts.

The passed in Graphics object might have a transform other than the identify transform installed on it. In this case, you might get unexpected results if you cumulatively apply another transform.

Parameters

g:Graphics: the Graphics object to protect

setBounds back to summary

setBounds	back to summary
public void setBounds(int x, int y, int width, int height) Overrides java.awt.Component.setBounds. Doc from java.awt.Component.setBounds. Moves and resizes this component. The new location of the top-left corner is specified by `x` and `y`, and the new size is specified by `width` and `height`. This method changes layout-related information, and therefore, invalidates the component hierarchy. Parameters x:int the new x-coordinate of this component y:int the new y-coordinate of this component width:int the new `width` of this component height:int the new `height` of this component

public void setBounds(int x, int y, int width, int height)

Overrides java.awt.Component.setBounds.

Doc from java.awt.Component.setBounds.

Moves and resizes this component. The new location of the top-left corner is specified by x and y, and the new size is specified by width and height.

This method changes layout-related information, and therefore, invalidates the component hierarchy.