Class MacRenderer

java.lang.Object
org.apache.batik.gvt.renderer.MacRenderer
All Implemented Interfaces:
ImageRenderer, Renderer
public class MacRenderer extends Object implements ImageRenderer
Simple implementation of the Renderer that supports dynamic updates.

  • Field Details

    • renderingHints

      protected RenderingHints renderingHints

    • usr2dev

      protected AffineTransform usr2dev

    • rootGN

      protected GraphicsNode rootGN

    • offScreenWidth

      protected int offScreenWidth

    • offScreenHeight

      protected int offScreenHeight

    • isDoubleBuffered

      protected boolean isDoubleBuffered

    • currImg

      protected BufferedImage currImg

    • workImg

      protected BufferedImage workImg

    • damagedAreas

      protected RectListManager damagedAreas

    • IMAGE_TYPE

      public static int IMAGE_TYPE

    • TRANSPARENT_WHITE

      public static Color TRANSPARENT_WHITE

    • defaultRenderingHints

      protected static RenderingHints defaultRenderingHints

  • Constructor Details

    • MacRenderer

      public MacRenderer()
      Constructs a new dynamic renderer with the specified buffer image.

    • MacRenderer

      public MacRenderer(RenderingHints rh, AffineTransform at)

  • Method Details

    • dispose

      public void dispose()
      Description copied from interface: ImageRenderer
      release resources associated with this object.
      Specified by:
      dispose in interface ImageRenderer
      Specified by:
      dispose in interface Renderer

    • 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.
      Specified by:
      setTree in interface Renderer

    • getTree

      public GraphicsNode getTree()
      Returns the GVT tree associated with this renderer
      Specified by:
      getTree in interface Renderer

    • setTransform

      public 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.
      Specified by:
      setTransform in interface ImageRenderer
      Specified by:
      setTransform in interface Renderer
      Parameters:
      usr2dev - the new user space to device space transform. If null, the identity transform will be set.

    • getTransform

      public AffineTransform getTransform()
      Returns the transform from the current user space (as defined by the top node of the GVT tree) to the device space.
      Specified by:
      getTransform in interface ImageRenderer
      Specified by:
      getTransform in interface Renderer

    • setRenderingHints

      public void setRenderingHints(RenderingHints rh)
      Description copied from interface: ImageRenderer
      Sets the specified rendering hints to be used for future renderings. This replaces current set of rendering hints.
      Specified by:
      setRenderingHints in interface ImageRenderer
      Parameters:
      rh - Set of rendering hints to use for future renderings

    • getRenderingHints

      public RenderingHints getRenderingHints()
      Description copied from interface: ImageRenderer
      Returns the rendering hints this ImageRenderer is using for its rendering.
      Specified by:
      getRenderingHints in interface ImageRenderer
      Returns:
      the RenderingHints which the Renderer is using for its rendering

    • 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).
      Specified by:
      isDoubleBuffered in interface Renderer

    • 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.
      Specified by:
      setDoubleBuffered in interface Renderer
      Parameters:
      isDoubleBuffered - the new value for double buffering

    • updateOffScreen

      public void updateOffScreen(int width, int height)
      Update the size of the image to be returned by getOffScreen. Note that this change will not be reflected by calls to getOffscreen until either clearOffScreen has completed (when isDoubleBuffered is false) or reapint has completed (when isDoubleBuffered is true).
      Specified by:
      updateOffScreen in interface ImageRenderer

    • getOffScreen

      public BufferedImage getOffScreen()
      Returns the current offscreen image. The exact symantics of this vary base on the value of isDoubleBuffered. If isDoubleBuffered is false this will return the image currently being worked on as soon as it is available. if isDoubleBuffered is false this will return the most recently completed result of repaint.
      Specified by:
      getOffScreen in interface ImageRenderer

    • clearOffScreen

      public void clearOffScreen()
      Sets up and clears the current offscreen buffer. When not double buffering one should call this method before calling getOffscreen to get the offscreen being drawn into. This ensures the buffer is up to date and doesn't contain junk. When double buffering this call can effectively be skipped, since getOffscreen will only refect the new rendering after repaint completes.
      Specified by:
      clearOffScreen in interface ImageRenderer

    • flush

      public void flush()
      Description copied from interface: ImageRenderer
      Flush any cached image data (preliminary interface).
      Specified by:
      flush in interface ImageRenderer

    • flush

      public void flush(Rectangle r)
      Description copied from interface: ImageRenderer
      Flush a rectangle of cached image data (preliminary interface).
      Specified by:
      flush in interface ImageRenderer

    • flush

      public void flush(Collection areas)
      Flush a list of rectangles of cached image data.
      Specified by:
      flush in interface ImageRenderer

    • updateWorkingBuffers

      protected void updateWorkingBuffers()

    • repaint

      public void repaint(Shape area)
      Description copied from interface: Renderer
      Repaints the associated GVT tree at least under area.
      Specified by:
      repaint in interface Renderer
      Parameters:
      area - the region to be repainted, in the current user space coordinate system.

    • repaint

      public void repaint(RectListManager devRLM)
      Repaints the associated GVT tree under the list of areas. If double buffered is true and this method completes cleanly it will set the result of the repaint as the image returned by getOffscreen otherwise the old image will still be returned. If double buffered is false it is possible some effects of the failed rendering will be visible in the image returned by getOffscreen.
      Specified by:
      repaint in interface Renderer
      Parameters:
      devRLM - regions to be repainted, in the current user space coordinate system.