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()
    Creates and returns a copy of this object.
    boolean
    equals(Object obj)
    Indicates whether some other object is "equal to" this one.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    Finalization is deprecated and subject to removal in a future release.
    final Class<?>
    getClass()
    Returns the runtime class of this Object.
    int
    hashCode()
    Returns a hash code value for this object.
    final void
    notify()
    Wakes up a single thread that is waiting on this object's monitor.
    final void
    notifyAll()
    Wakes up all threads that are waiting on this object's monitor.
    String
    toString()
    Returns a string representation of the object.
    final void
    wait()
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
    final void
    wait(long timeoutMillis)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
    final void
    wait(long timeoutMillis, int nanos)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

  • 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.