Class AbstractRegionPainter.PaintContext

java.lang.Object
javax.swing.plaf.nimbus.AbstractRegionPainter.PaintContext
Enclosing class:
AbstractRegionPainter
protected static class AbstractRegionPainter.PaintContext extends Object
A class encapsulating state useful when painting. Generally, instances of this class are created once, and reused for each paint request without modification. This class contains values useful when hinting the cache engine, and when decoding control points and bezier curve anchors.

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    protected static enum 
    AbstractRegionPainter.PaintContext.CacheMode
    Cache mode.

  • Constructor Summary

    Constructors
    Constructor
    Description
    PaintContext(Insets insets, Dimension canvasSize, boolean inverted)
    Creates a new PaintContext which does not attempt to cache or scale any cached images.
    PaintContext(Insets insets, Dimension canvasSize, boolean inverted, AbstractRegionPainter.PaintContext.CacheMode cacheMode, double maxH, double maxV)
    Creates a new PaintContext.

  • Method Summary

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

    • PaintContext

      public PaintContext(Insets insets, Dimension canvasSize, boolean inverted)
      Creates a new PaintContext which does not attempt to cache or scale any cached images.
      Parameters:
      insets - The stretching insets. May be null. If null, then assumed to be 0, 0, 0, 0.
      canvasSize - The size of the canvas used when encoding the various x/y values. May be null. If null, then it is assumed that there are no encoded values, and any calls to one of the "decode" methods will return the passed in value.
      inverted - Whether to "invert" the meaning of the 9-square grid and stretching insets

    • PaintContext

      public PaintContext(Insets insets, Dimension canvasSize, boolean inverted, AbstractRegionPainter.PaintContext.CacheMode cacheMode, double maxH, double maxV)
      Creates a new PaintContext.
      Parameters:
      insets - The stretching insets. May be null. If null, then assumed to be 0, 0, 0, 0.
      canvasSize - The size of the canvas used when encoding the various x/y values. May be null. If null, then it is assumed that there are no encoded values, and any calls to one of the "decode" methods will return the passed in value.
      inverted - Whether to "invert" the meaning of the 9-square grid and stretching insets
      cacheMode - A hint as to which caching mode to use. If null, then set to no caching.
      maxH - The maximum scale in the horizontal direction to use before punting and redrawing from scratch. For example, if maxH is 2, then we will attempt to scale any cached images up to 2x the canvas width before redrawing from scratch. Reasonable maxH values may improve painting performance. If set too high, then you may get poor looking graphics at higher zoom levels. Must be >= 1.
      maxV - The maximum scale in the vertical direction to use before punting and redrawing from scratch. For example, if maxV is 2, then we will attempt to scale any cached images up to 2x the canvas height before redrawing from scratch. Reasonable maxV values may improve painting performance. If set too high, then you may get poor looking graphics at higher zoom levels. Must be >= 1.