Package org.apache.batik.ext.awt
Class LinearGradientPaintContext
- java.lang.Object
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- org.apache.batik.ext.awt.MultipleGradientPaintContext
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- org.apache.batik.ext.awt.LinearGradientPaintContext
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- All Implemented Interfaces:
java.awt.PaintContext
final class LinearGradientPaintContext extends MultipleGradientPaintContext
Provides the actual implementation for the LinearGradientPaint This is where the pixel processing is done.- Version:
- $Id: LinearGradientPaintContext.java 1733416 2016-03-03 07:07:13Z gadams $
- See Also:
PaintContext,Paint,GradientPaint
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Field Summary
Fields Modifier and Type Field Description private static intANTI_ALIAS_IMPLprivate static intDEFAULT_IMPLprivate floatdgdXThe following invariants are used to process the gradient value from a device space coordinate, (X, Y): g(X, Y) = dgdX*X + dgdY*Y + gcprivate floatdgdYThe following invariants are used to process the gradient value from a device space coordinate, (X, Y): g(X, Y) = dgdX*X + dgdY*Y + gcprivate intfillMethodprivate floatgcThe following invariants are used to process the gradient value from a device space coordinate, (X, Y): g(X, Y) = dgdX*X + dgdY*Y + gcprivate floatpixSzThe following invariants are used to process the gradient value from a device space coordinate, (X, Y): g(X, Y) = dgdX*X + dgdY*Y + gc-
Fields inherited from class org.apache.batik.ext.awt.MultipleGradientPaintContext
a00, a01, a02, a10, a11, a12, cached, cachedModel, colorSpace, cycleMethod, dataModel, DEBUG, fastGradientArraySize, fractions, gradient, GRADIENT_SIZE, GRADIENT_SIZE_INDEX, gradientAverage, gradientOverflow, gradients, gradientsLength, gradientUnderflow, hasDiscontinuity, isSimpleLookup, model, normalizedIntervals, saved
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Constructor Summary
Constructors Constructor Description LinearGradientPaintContext(java.awt.image.ColorModel cm, java.awt.Rectangle deviceBounds, java.awt.geom.Rectangle2D userBounds, java.awt.geom.AffineTransform t, java.awt.RenderingHints hints, java.awt.geom.Point2D dStart, java.awt.geom.Point2D dEnd, float[] fractions, java.awt.Color[] colors, MultipleGradientPaint.CycleMethodEnum cycleMethod, MultipleGradientPaint.ColorSpaceEnum colorSpace)Constructor for LinearGradientPaintContext.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected voidfillHardNoCycle(int[] pixels, int off, int adjust, int x, int y, int w, int h)protected voidfillRaster(int[] pixels, int off, int adjust, int x, int y, int w, int h)Return a Raster containing the colors generated for the graphics operation.protected voidfillSimpleNoCycle(int[] pixels, int off, int adjust, int x, int y, int w, int h)protected voidfillSimpleReflect(int[] pixels, int off, int adjust, int x, int y, int w, int h)protected voidfillSimpleRepeat(int[] pixels, int off, int adjust, int x, int y, int w, int h)-
Methods inherited from class org.apache.batik.ext.awt.MultipleGradientPaintContext
calculateGradientFractions, dispose, getCachedRaster, getColorModel, getRaster, indexGradientAntiAlias, indexIntoGradientsArrays, putCachedRaster
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Field Detail
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dgdX
private float dgdX
The following invariants are used to process the gradient value from a device space coordinate, (X, Y): g(X, Y) = dgdX*X + dgdY*Y + gc
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dgdY
private float dgdY
The following invariants are used to process the gradient value from a device space coordinate, (X, Y): g(X, Y) = dgdX*X + dgdY*Y + gc
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gc
private float gc
The following invariants are used to process the gradient value from a device space coordinate, (X, Y): g(X, Y) = dgdX*X + dgdY*Y + gc
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pixSz
private float pixSz
The following invariants are used to process the gradient value from a device space coordinate, (X, Y): g(X, Y) = dgdX*X + dgdY*Y + gc
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DEFAULT_IMPL
private static final int DEFAULT_IMPL
- See Also:
- Constant Field Values
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ANTI_ALIAS_IMPL
private static final int ANTI_ALIAS_IMPL
- See Also:
- Constant Field Values
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fillMethod
private int fillMethod
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Constructor Detail
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LinearGradientPaintContext
public LinearGradientPaintContext(java.awt.image.ColorModel cm, java.awt.Rectangle deviceBounds, java.awt.geom.Rectangle2D userBounds, java.awt.geom.AffineTransform t, java.awt.RenderingHints hints, java.awt.geom.Point2D dStart, java.awt.geom.Point2D dEnd, float[] fractions, java.awt.Color[] colors, MultipleGradientPaint.CycleMethodEnum cycleMethod, MultipleGradientPaint.ColorSpaceEnum colorSpace) throws java.awt.geom.NoninvertibleTransformExceptionConstructor for LinearGradientPaintContext.- Parameters:
cm-ColorModelthat receives thePaintdata. This is used only as a hint.deviceBounds- the device space bounding box of the graphics primitive being rendereduserBounds- the user space bounding box of the graphics primitive being renderedt- theAffineTransformfrom user space into device space (gradientTransform should be concatenated with this)hints- the hints that the context object uses to choose between rendering alternativesdStart- gradient start point, in user spacedEnd- gradient end point, in user spacefractions- the fractions specifying the gradient distributioncolors- the gradient colorscycleMethod- either NO_CYCLE, REFLECT, or REPEATcolorSpace- which colorspace to use for interpolation, either SRGB or LINEAR_RGB- Throws:
java.awt.geom.NoninvertibleTransformException
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Method Detail
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fillHardNoCycle
protected void fillHardNoCycle(int[] pixels, int off, int adjust, int x, int y, int w, int h)
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fillSimpleNoCycle
protected void fillSimpleNoCycle(int[] pixels, int off, int adjust, int x, int y, int w, int h)
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fillSimpleRepeat
protected void fillSimpleRepeat(int[] pixels, int off, int adjust, int x, int y, int w, int h)
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fillSimpleReflect
protected void fillSimpleReflect(int[] pixels, int off, int adjust, int x, int y, int w, int h)
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fillRaster
protected void fillRaster(int[] pixels, int off, int adjust, int x, int y, int w, int h)Return a Raster containing the colors generated for the graphics operation. This is where the area is filled with colors distributed linearly.- Specified by:
fillRasterin classMultipleGradientPaintContext- Parameters:
x- The x coordinate of the area in device space for which colors are generated.y- The y coordinate of the area in device space for which colors are generated.w- The width of the area in device space for which colors are generated.h- The height of the area in device space for which colors are generated.
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