org.apache.batik.gvt.renderer
Interface Renderer

All Known Subinterfaces:

ImageRenderer

public interface Renderer

Interface for GVT Renderers.

Method Summary

void	dispose() Cause the renderer to ask to be removed from external reference lists, de-register as a listener to events, etc.
java.awt.geom.AffineTransform	getTransform() Returns a copy of the transform from the current user space (as defined by the top node of the GVT tree) to the device space (1 unit = 1/72nd of an inch / 1 pixel, roughly speaking
GraphicsNode	getTree() Returns the GVT tree associated with this renderer
boolean	isDoubleBuffered() Returns true if the Renderer is currently doubleBuffering is rendering requests.
void	repaint(java.util.List areas) Repaints the associated GVT tree at least in areas under the list of areas.
void	repaint(java.awt.Shape area) Repaints the associated GVT tree at least under area.
void	setDoubleBuffered(boolean isDoubleBuffered) Turns on/off double buffering in renderer.
void	setTransform(java.awt.geom.AffineTransform usr2dev) Sets the transform from the current user space (as defined by the top node of the GVT tree, to the associated device space.
void	setTree(GraphicsNode treeRoot) This associates the given GVT Tree with this renderer.

Method Detail

setTree

public void setTree(GraphicsNode treeRoot)

This associates the given GVT Tree with this renderer. Any previous tree association is forgotten. Not certain if this should be just GraphicsNode, or CanvasGraphicsNode.

getTree

public GraphicsNode getTree()

Returns the GVT tree associated with this renderer

repaint

public void repaint(java.awt.Shape area)

Repaints the associated GVT tree at least under area.

Parameters:

areas - the region to be repainted, in the current user space coordinate system.

repaint

public void repaint(java.util.List areas)

Repaints the associated GVT tree at least in areas under the list of areas.

Parameters:

areas - a List of regions to be repainted, in the current user space coordinate system.

setTransform

public void setTransform(java.awt.geom.AffineTransform usr2dev)

Sets the transform from the current user space (as defined by the top node of the GVT tree, to the associated device space.

getTransform

public java.awt.geom.AffineTransform getTransform()

Returns a copy of the transform from the current user space (as defined by the top node of the GVT tree) to the device space (1 unit = 1/72nd of an inch / 1 pixel, roughly speaking

isDoubleBuffered

public boolean isDoubleBuffered()

Returns true if the Renderer is currently doubleBuffering is rendering requests. If it is then getOffscreen will only return completed renderings (or null if nothing is available).

setDoubleBuffered

public void setDoubleBuffered(boolean isDoubleBuffered)

Turns on/off double buffering in renderer. Turning off double buffering makes it possible to see the ongoing results of a render operation. .

dispose

public void dispose()

Cause the renderer to ask to be removed from external reference lists, de-register as a listener to events, etc. so that in the absence of other existing references, it can be removed by the garbage collector.