org.apache.batik.gvt.renderer
Interface Renderer

All Known Subinterfaces:
ImageRenderer
All Known Implementing Classes:
DynamicRenderer, MacRenderer, StaticRenderer

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.
 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(RectListManager areas)
          Repaints the associated GVT tree at least in areas under the list of areas.
 void repaint(Shape area)
          Repaints the associated GVT tree at least under area.
 void setDoubleBuffered(boolean isDoubleBuffered)
          Turns on/off double buffering in renderer.
 void setTransform(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

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

GraphicsNode getTree()
Returns the GVT tree associated with this renderer


repaint

void repaint(Shape area)
Repaints the associated GVT tree at least under area.

Parameters:
area - the region to be repainted, in the current user space coordinate system.

repaint

void repaint(RectListManager 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

void setTransform(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

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

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

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

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



Copyright © 2008 Apache Software Foundation. All Rights Reserved.