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SunGraphics2D.java
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SunGraphics2D.java
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/*
* Copyright (c) 1996, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.java2d;
import java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Composite;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.Image;
import java.awt.LinearGradientPaint;
import java.awt.Paint;
import java.awt.RadialGradientPaint;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.RenderingHints.Key;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.TexturePaint;
import java.awt.Transparency;
import java.awt.font.FontRenderContext;
import java.awt.font.GlyphVector;
import java.awt.font.TextLayout;
import java.awt.geom.AffineTransform;
import java.awt.geom.Area;
import java.awt.geom.GeneralPath;
import java.awt.geom.NoninvertibleTransformException;
import java.awt.geom.PathIterator;
import java.awt.geom.Rectangle2D;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.awt.image.BufferedImageOp;
import java.awt.image.ColorModel;
import java.awt.image.ImageObserver;
import java.awt.image.MultiResolutionImage;
import java.awt.image.Raster;
import java.awt.image.RenderedImage;
import java.awt.image.VolatileImage;
import java.awt.image.WritableRaster;
import java.awt.image.renderable.RenderContext;
import java.awt.image.renderable.RenderableImage;
import java.lang.annotation.Native;
import java.text.AttributedCharacterIterator;
import java.util.Map;
import sun.awt.ConstrainableGraphics;
import sun.awt.SunHints;
import sun.awt.image.MultiResolutionToolkitImage;
import sun.awt.image.SurfaceManager;
import sun.awt.image.ToolkitImage;
import sun.awt.util.PerformanceLogger;
import sun.font.FontDesignMetrics;
import sun.font.FontUtilities;
import sun.java2d.loops.Blit;
import sun.java2d.loops.CompositeType;
import sun.java2d.loops.FontInfo;
import sun.java2d.loops.MaskFill;
import sun.java2d.loops.RenderLoops;
import sun.java2d.loops.SurfaceType;
import sun.java2d.loops.XORComposite;
import sun.java2d.pipe.DrawImagePipe;
import sun.java2d.pipe.LoopPipe;
import sun.java2d.pipe.PixelDrawPipe;
import sun.java2d.pipe.PixelFillPipe;
import sun.java2d.pipe.Region;
import sun.java2d.pipe.ShapeDrawPipe;
import sun.java2d.pipe.ShapeSpanIterator;
import sun.java2d.pipe.TextPipe;
import sun.java2d.pipe.ValidatePipe;
import static java.awt.geom.AffineTransform.TYPE_FLIP;
import static java.awt.geom.AffineTransform.TYPE_MASK_SCALE;
import static java.awt.geom.AffineTransform.TYPE_TRANSLATION;
/**
* This is the master Graphics2D superclass for all of the Sun
* Graphics implementations. This class relies on subclasses to
* manage the various device information, but provides an overall
* general framework for performing all of the requests in the
* Graphics and Graphics2D APIs.
*
* @author Jim Graham
*/
public final class SunGraphics2D
extends Graphics2D
implements ConstrainableGraphics, Cloneable, DestSurfaceProvider
{
/*
* Attribute States
*/
/* Paint */
@Native
public static final int PAINT_CUSTOM = 6; /* Any other Paint object */
@Native
public static final int PAINT_TEXTURE = 5; /* Tiled Image */
@Native
public static final int PAINT_RAD_GRADIENT = 4; /* Color RadialGradient */
@Native
public static final int PAINT_LIN_GRADIENT = 3; /* Color LinearGradient */
@Native
public static final int PAINT_GRADIENT = 2; /* Color Gradient */
@Native
public static final int PAINT_ALPHACOLOR = 1; /* Non-opaque Color */
@Native
public static final int PAINT_OPAQUECOLOR = 0; /* Opaque Color */
/* Composite*/
@Native
public static final int COMP_CUSTOM = 3;/* Custom Composite */
@Native
public static final int COMP_XOR = 2;/* XOR Mode Composite */
@Native
public static final int COMP_ALPHA = 1;/* AlphaComposite */
@Native
public static final int COMP_ISCOPY = 0;/* simple stores into destination,
* i.e. Src, SrcOverNoEa, and other
* alpha modes which replace
* the destination.
*/
/* Stroke */
@Native
public static final int STROKE_CUSTOM = 3; /* custom Stroke */
@Native
public static final int STROKE_WIDE = 2; /* BasicStroke */
@Native
public static final int STROKE_THINDASHED = 1; /* BasicStroke */
@Native
public static final int STROKE_THIN = 0; /* BasicStroke */
/* Transform */
@Native
public static final int TRANSFORM_GENERIC = 4; /* any 3x2 */
@Native
public static final int TRANSFORM_TRANSLATESCALE = 3; /* scale XY */
@Native
public static final int TRANSFORM_ANY_TRANSLATE = 2; /* non-int translate */
@Native
public static final int TRANSFORM_INT_TRANSLATE = 1; /* int translate */
@Native
public static final int TRANSFORM_ISIDENT = 0; /* Identity */
/* Clipping */
@Native
public static final int CLIP_SHAPE = 2; /* arbitrary clip */
@Native
public static final int CLIP_RECTANGULAR = 1; /* rectangular clip */
@Native
public static final int CLIP_DEVICE = 0; /* no clipping set */
/* The following fields are used when the current Paint is a Color. */
public int eargb; // ARGB value with ExtraAlpha baked in
public int pixel; // pixel value for eargb
public SurfaceData surfaceData;
public PixelDrawPipe drawpipe;
public PixelFillPipe fillpipe;
public DrawImagePipe imagepipe;
public ShapeDrawPipe shapepipe;
public TextPipe textpipe;
public MaskFill alphafill;
public RenderLoops loops;
public CompositeType imageComp; /* Image Transparency checked on fly */
public int paintState;
public int compositeState;
public int strokeState;
public int transformState;
public int clipState;
public Color foregroundColor;
public Color backgroundColor;
public AffineTransform transform;
public int transX;
public int transY;
protected static final Stroke defaultStroke = new BasicStroke();
protected static final Composite defaultComposite = AlphaComposite.SrcOver;
private static final Font defaultFont =
new Font(Font.DIALOG, Font.PLAIN, 12);
public Paint paint;
public Stroke stroke;
public Composite composite;
protected Font font;
protected FontMetrics fontMetrics;
public int renderHint;
public int antialiasHint;
public int textAntialiasHint;
protected int fractionalMetricsHint;
/* A gamma adjustment to the colour used in lcd text blitting */
public int lcdTextContrast;
private static int lcdTextContrastDefaultValue = 140;
private int interpolationHint; // raw value of rendering Hint
public int strokeHint;
public int interpolationType; // algorithm choice based on
// interpolation and render Hints
public RenderingHints hints;
public Region constrainClip; // lightweight bounds in pixels
public int constrainX;
public int constrainY;
public Region clipRegion;
public Shape usrClip;
protected Region devClip; // Actual physical drawable in pixels
private int resolutionVariantHint;
// cached state for text rendering
private boolean validFontInfo;
private FontInfo fontInfo;
private FontInfo glyphVectorFontInfo;
private FontRenderContext glyphVectorFRC;
private static final int slowTextTransformMask =
AffineTransform.TYPE_GENERAL_TRANSFORM
| AffineTransform.TYPE_MASK_ROTATION
| AffineTransform.TYPE_FLIP;
static {
if (PerformanceLogger.loggingEnabled()) {
PerformanceLogger.setTime("SunGraphics2D static initialization");
}
}
public SunGraphics2D(SurfaceData sd, Color fg, Color bg, Font f) {
surfaceData = sd;
foregroundColor = fg;
backgroundColor = bg;
stroke = defaultStroke;
composite = defaultComposite;
paint = foregroundColor;
imageComp = CompositeType.SrcOverNoEa;
renderHint = SunHints.INTVAL_RENDER_DEFAULT;
antialiasHint = SunHints.INTVAL_ANTIALIAS_OFF;
textAntialiasHint = SunHints.INTVAL_TEXT_ANTIALIAS_DEFAULT;
fractionalMetricsHint = SunHints.INTVAL_FRACTIONALMETRICS_OFF;
lcdTextContrast = lcdTextContrastDefaultValue;
interpolationHint = -1;
strokeHint = SunHints.INTVAL_STROKE_DEFAULT;
resolutionVariantHint = SunHints.INTVAL_RESOLUTION_VARIANT_DEFAULT;
interpolationType = AffineTransformOp.TYPE_NEAREST_NEIGHBOR;
transform = getDefaultTransform();
if (!transform.isIdentity()) {
invalidateTransform();
}
validateColor();
font = f;
if (font == null) {
font = defaultFont;
}
setDevClip(sd.getBounds());
invalidatePipe();
}
private AffineTransform getDefaultTransform() {
GraphicsConfiguration gc = getDeviceConfiguration();
return (gc == null) ? new AffineTransform() : gc.getDefaultTransform();
}
protected Object clone() {
try {
SunGraphics2D g = (SunGraphics2D) super.clone();
g.transform = new AffineTransform(this.transform);
if (hints != null) {
g.hints = (RenderingHints) this.hints.clone();
}
/* FontInfos are re-used, so must be cloned too, if they
* are valid, and be nulled out if invalid.
* The implied trade-off is that there is more to be gained
* from re-using these objects than is lost by having to
* clone them when the SG2D is cloned.
*/
if (this.fontInfo != null) {
if (this.validFontInfo) {
g.fontInfo = (FontInfo)this.fontInfo.clone();
} else {
g.fontInfo = null;
}
}
if (this.glyphVectorFontInfo != null) {
g.glyphVectorFontInfo =
(FontInfo)this.glyphVectorFontInfo.clone();
g.glyphVectorFRC = this.glyphVectorFRC;
}
//g.invalidatePipe();
return g;
} catch (CloneNotSupportedException e) {
}
return null;
}
/**
* Create a new SunGraphics2D based on this one.
*/
public Graphics create() {
return (Graphics) clone();
}
public void setDevClip(int x, int y, int w, int h) {
Region c = constrainClip;
if (c == null) {
devClip = Region.getInstanceXYWH(x, y, w, h);
} else {
devClip = c.getIntersectionXYWH(x, y, w, h);
}
validateCompClip();
}
public void setDevClip(Rectangle r) {
setDevClip(r.x, r.y, r.width, r.height);
}
/**
* Constrain rendering for lightweight objects.
*/
public void constrain(int x, int y, int w, int h, Region region) {
if ((x | y) != 0) {
translate(x, y);
}
if (transformState > TRANSFORM_TRANSLATESCALE) {
clipRect(0, 0, w, h);
return;
}
// changes parameters according to the current scale and translate.
final double scaleX = transform.getScaleX();
final double scaleY = transform.getScaleY();
x = constrainX = (int) transform.getTranslateX();
y = constrainY = (int) transform.getTranslateY();
w = Region.dimAdd(x, Region.clipScale(w, scaleX));
h = Region.dimAdd(y, Region.clipScale(h, scaleY));
Region c = constrainClip;
if (c == null) {
c = Region.getInstanceXYXY(x, y, w, h);
} else {
c = c.getIntersectionXYXY(x, y, w, h);
}
if (region != null) {
region = region.getScaledRegion(scaleX, scaleY);
region = region.getTranslatedRegion(x, y);
c = c.getIntersection(region);
}
if (c == constrainClip) {
// Common case to ignore
return;
}
constrainClip = c;
if (!devClip.isInsideQuickCheck(c)) {
devClip = devClip.getIntersection(c);
validateCompClip();
}
}
/**
* Constrain rendering for lightweight objects.
*
* REMIND: This method will back off to the "workaround"
* of using translate and clipRect if the Graphics
* to be constrained has a complex transform. The
* drawback of the workaround is that the resulting
* clip and device origin cannot be "enforced".
*
* @throws IllegalStateException If the Graphics
* to be constrained has a complex transform.
*/
@Override
public void constrain(int x, int y, int w, int h) {
constrain(x, y, w, h, null);
}
protected static ValidatePipe invalidpipe = new ValidatePipe();
/*
* Invalidate the pipeline
*/
protected void invalidatePipe() {
drawpipe = invalidpipe;
fillpipe = invalidpipe;
shapepipe = invalidpipe;
textpipe = invalidpipe;
imagepipe = invalidpipe;
loops = null;
}
public void validatePipe() {
/* This workaround is for the situation when we update the Pipelines
* for invalid SurfaceData and run further code when the current
* pipeline doesn't support the type of new SurfaceData created during
* the current pipeline's work (in place of the invalid SurfaceData).
* Usually SurfaceData and Pipelines are repaired (through revalidateAll)
* and called again in the exception handlers */
if (!surfaceData.isValid()) {
throw new InvalidPipeException("attempt to validate Pipe with invalid SurfaceData");
}
surfaceData.validatePipe(this);
}
/*
* Intersect two Shapes by the simplest method, attempting to produce
* a simplified result.
* The boolean arguments keep1 and keep2 specify whether or not
* the first or second shapes can be modified during the operation
* or whether that shape must be "kept" unmodified.
*/
Shape intersectShapes(Shape s1, Shape s2, boolean keep1, boolean keep2) {
if (s1 instanceof Rectangle && s2 instanceof Rectangle) {
return ((Rectangle) s1).intersection((Rectangle) s2);
}
if (s1 instanceof Rectangle2D) {
return intersectRectShape((Rectangle2D) s1, s2, keep1, keep2);
} else if (s2 instanceof Rectangle2D) {
return intersectRectShape((Rectangle2D) s2, s1, keep2, keep1);
}
return intersectByArea(s1, s2, keep1, keep2);
}
/*
* Intersect a Rectangle with a Shape by the simplest method,
* attempting to produce a simplified result.
* The boolean arguments keep1 and keep2 specify whether or not
* the first or second shapes can be modified during the operation
* or whether that shape must be "kept" unmodified.
*/
Shape intersectRectShape(Rectangle2D r, Shape s,
boolean keep1, boolean keep2) {
if (s instanceof Rectangle2D) {
Rectangle2D r2 = (Rectangle2D) s;
Rectangle2D outrect;
if (!keep1) {
outrect = r;
} else if (!keep2) {
outrect = r2;
} else {
outrect = new Rectangle2D.Float();
}
double x1 = Math.max(r.getX(), r2.getX());
double x2 = Math.min(r.getX() + r.getWidth(),
r2.getX() + r2.getWidth());
double y1 = Math.max(r.getY(), r2.getY());
double y2 = Math.min(r.getY() + r.getHeight(),
r2.getY() + r2.getHeight());
if (((x2 - x1) < 0) || ((y2 - y1) < 0))
// Width or height is negative. No intersection.
outrect.setFrameFromDiagonal(0, 0, 0, 0);
else
outrect.setFrameFromDiagonal(x1, y1, x2, y2);
return outrect;
}
if (r.contains(s.getBounds2D())) {
if (keep2) {
s = cloneShape(s);
}
return s;
}
return intersectByArea(r, s, keep1, keep2);
}
protected static Shape cloneShape(Shape s) {
return new GeneralPath(s);
}
/*
* Intersect two Shapes using the Area class. Presumably other
* attempts at simpler intersection methods proved fruitless.
* The boolean arguments keep1 and keep2 specify whether or not
* the first or second shapes can be modified during the operation
* or whether that shape must be "kept" unmodified.
* @see #intersectShapes
* @see #intersectRectShape
*/
Shape intersectByArea(Shape s1, Shape s2, boolean keep1, boolean keep2) {
Area a1, a2;
// First see if we can find an overwritable source shape
// to use as our destination area to avoid duplication.
if (!keep1 && (s1 instanceof Area)) {
a1 = (Area) s1;
} else if (!keep2 && (s2 instanceof Area)) {
a1 = (Area) s2;
s2 = s1;
} else {
a1 = new Area(s1);
}
if (s2 instanceof Area) {
a2 = (Area) s2;
} else {
a2 = new Area(s2);
}
a1.intersect(a2);
if (a1.isRectangular()) {
return a1.getBounds();
}
return a1;
}
/*
* Intersect usrClip bounds and device bounds to determine the composite
* rendering boundaries.
*/
public Region getCompClip() {
if (!surfaceData.isValid()) {
// revalidateAll() implicitly recalculcates the composite clip
revalidateAll();
}
return clipRegion;
}
public Font getFont() {
if (font == null) {
font = defaultFont;
}
return font;
}
private static final double[] IDENT_MATRIX = {1, 0, 0, 1};
private static final AffineTransform IDENT_ATX =
new AffineTransform();
private static final int MINALLOCATED = 8;
private static final int TEXTARRSIZE = 17;
private static double[][] textTxArr = new double[TEXTARRSIZE][];
private static AffineTransform[] textAtArr =
new AffineTransform[TEXTARRSIZE];
static {
for (int i=MINALLOCATED;i<TEXTARRSIZE;i++) {
textTxArr[i] = new double [] {i, 0, 0, i};
textAtArr[i] = new AffineTransform( textTxArr[i]);
}
}
// cached state for various draw[String,Char,Byte] optimizations
public FontInfo checkFontInfo(FontInfo info, Font font,
FontRenderContext frc) {
/* Do not create a FontInfo object as part of construction of an
* SG2D as its possible it may never be needed - ie if no text
* is drawn using this SG2D.
*/
if (info == null) {
info = new FontInfo();
}
float ptSize = font.getSize2D();
int txFontType;
AffineTransform devAt, textAt=null;
if (font.isTransformed()) {
textAt = font.getTransform();
textAt.scale(ptSize, ptSize);
txFontType = textAt.getType();
info.originX = (float)textAt.getTranslateX();
info.originY = (float)textAt.getTranslateY();
textAt.translate(-info.originX, -info.originY);
if (transformState >= TRANSFORM_TRANSLATESCALE) {
transform.getMatrix(info.devTx = new double[4]);
devAt = new AffineTransform(info.devTx);
textAt.preConcatenate(devAt);
} else {
info.devTx = IDENT_MATRIX;
devAt = IDENT_ATX;
}
textAt.getMatrix(info.glyphTx = new double[4]);
double shearx = textAt.getShearX();
double scaley = textAt.getScaleY();
if (shearx != 0) {
scaley = Math.sqrt(shearx * shearx + scaley * scaley);
}
info.pixelHeight = (int)(Math.abs(scaley)+0.5);
} else {
txFontType = AffineTransform.TYPE_IDENTITY;
info.originX = info.originY = 0;
if (transformState >= TRANSFORM_TRANSLATESCALE) {
transform.getMatrix(info.devTx = new double[4]);
devAt = new AffineTransform(info.devTx);
info.glyphTx = new double[4];
for (int i = 0; i < 4; i++) {
info.glyphTx[i] = info.devTx[i] * ptSize;
}
textAt = new AffineTransform(info.glyphTx);
double shearx = transform.getShearX();
double scaley = transform.getScaleY();
if (shearx != 0) {
scaley = Math.sqrt(shearx * shearx + scaley * scaley);
}
info.pixelHeight = (int)(Math.abs(scaley * ptSize)+0.5);
} else {
/* If the double represents a common integral, we
* may have pre-allocated objects.
* A "sparse" array be seems to be as fast as a switch
* even for 3 or 4 pt sizes, and is more flexible.
* This should perform comparably in single-threaded
* rendering to the old code which synchronized on the
* class and scale better on MP systems.
*/
int pszInt = (int)ptSize;
if (ptSize == pszInt &&
pszInt >= MINALLOCATED && pszInt < TEXTARRSIZE) {
info.glyphTx = textTxArr[pszInt];
textAt = textAtArr[pszInt];
info.pixelHeight = pszInt;
} else {
info.pixelHeight = (int)(ptSize+0.5);
}
if (textAt == null) {
info.glyphTx = new double[] {ptSize, 0, 0, ptSize};
textAt = new AffineTransform(info.glyphTx);
}
info.devTx = IDENT_MATRIX;
devAt = IDENT_ATX;
}
}
info.nonInvertibleTx =
(Math.abs(textAt.getDeterminant()) <= Double.MIN_VALUE);
info.font2D = FontUtilities.getFont2D(font);
int fmhint = fractionalMetricsHint;
if (fmhint == SunHints.INTVAL_FRACTIONALMETRICS_DEFAULT) {
fmhint = SunHints.INTVAL_FRACTIONALMETRICS_OFF;
}
info.lcdSubPixPos = false; // conditionally set true in LCD mode.
/* The text anti-aliasing hints that are set by the client need
* to be interpreted for the current state and stored in the
* FontInfo.aahint which is what will actually be used and
* will be one of OFF, ON, LCD_HRGB or LCD_VRGB.
* This is what pipe selection code should typically refer to, not
* textAntialiasHint. This means we are now evaluating the meaning
* of "default" here. Any pipe that really cares about that will
* also need to consult that variable.
* Otherwise these are being used only as args to getStrike,
* and are encapsulated in that object which is part of the
* FontInfo, so we do not need to store them directly as fields
* in the FontInfo object.
* That could change if FontInfo's were more selectively
* revalidated when graphics state changed. Presently this
* method re-evaluates all fields in the fontInfo.
* The strike doesn't need to know the RGB subpixel order. Just
* if its H or V orientation, so if an LCD option is specified we
* always pass in the RGB hint to the strike.
* frc is non-null only if this is a GlyphVector. For reasons
* which are probably a historical mistake the AA hint in a GV
* is honoured when we render, overriding the Graphics setting.
*/
int aahint;
if (frc == null) {
aahint = textAntialiasHint;
} else {
aahint = ((SunHints.Value)frc.getAntiAliasingHint()).getIndex();
}
if (aahint == SunHints.INTVAL_TEXT_ANTIALIAS_DEFAULT) {
if (antialiasHint == SunHints.INTVAL_ANTIALIAS_ON) {
aahint = SunHints.INTVAL_TEXT_ANTIALIAS_ON;
} else {
aahint = SunHints.INTVAL_TEXT_ANTIALIAS_OFF;
}
} else {
/* If we are in checkFontInfo because a rendering hint has been
* set then all pipes are revalidated. But we can also
* be here because setFont() has been called when the 'gasp'
* hint is set, as then the font size determines the text pipe.
* See comments in SunGraphics2d.setFont(Font).
*/
if (aahint == SunHints.INTVAL_TEXT_ANTIALIAS_GASP) {
if (info.font2D.useAAForPtSize(info.pixelHeight)) {
aahint = SunHints.INTVAL_TEXT_ANTIALIAS_ON;
} else {
aahint = SunHints.INTVAL_TEXT_ANTIALIAS_OFF;
}
} else if (aahint >= SunHints.INTVAL_TEXT_ANTIALIAS_LCD_HRGB) {
/* loops for default rendering modes are installed in the SG2D
* constructor. If there are none this will be null.
* Not all compositing modes update the render loops, so
* we also test that this is a mode we know should support
* this. One minor issue is that the loops aren't necessarily
* installed for a new rendering mode until after this
* method is called during pipeline validation. So it is
* theoretically possible that it was set to null for a
* compositing mode, the composite is then set back to Src,
* but the loop is still null when this is called and AA=ON
* is installed instead of an LCD mode.
* However this is done in the right order in SurfaceData.java
* so this is not likely to be a problem - but not
* guaranteed.
*/
if (
!surfaceData.canRenderLCDText(this)
// loops.drawGlyphListLCDLoop == null ||
// compositeState > COMP_ISCOPY ||
// paintState > PAINT_ALPHACOLOR
) {
aahint = SunHints.INTVAL_TEXT_ANTIALIAS_ON;
} else {
info.lcdRGBOrder = true;
/* Collapse these into just HRGB or VRGB.
* Pipe selection code needs only to test for these two.
* Since these both select the same pipe anyway its
* tempting to collapse into one value. But they are
* different strikes (glyph caches) so the distinction
* needs to be made for that purpose.
*/
if (aahint == SunHints.INTVAL_TEXT_ANTIALIAS_LCD_HBGR) {
aahint = SunHints.INTVAL_TEXT_ANTIALIAS_LCD_HRGB;
info.lcdRGBOrder = false;
} else if
(aahint == SunHints.INTVAL_TEXT_ANTIALIAS_LCD_VBGR) {
aahint = SunHints.INTVAL_TEXT_ANTIALIAS_LCD_VRGB;
info.lcdRGBOrder = false;
}
/* Support subpixel positioning only for the case in
* which the horizontal resolution is increased
*/
info.lcdSubPixPos =
fmhint == SunHints.INTVAL_FRACTIONALMETRICS_ON &&
aahint == SunHints.INTVAL_TEXT_ANTIALIAS_LCD_HRGB;
}
}
}
if (FontUtilities.isMacOSX14 &&
(aahint == SunHints.INTVAL_TEXT_ANTIALIAS_OFF))
{
aahint = SunHints.INTVAL_TEXT_ANTIALIAS_ON;
}
info.aaHint = aahint;
info.fontStrike = info.font2D.getStrike(font, devAt, textAt,
aahint, fmhint);
return info;
}
public static boolean isRotated(double [] mtx) {
if ((mtx[0] == mtx[3]) &&
(mtx[1] == 0.0) &&
(mtx[2] == 0.0) &&
(mtx[0] > 0.0))
{
return false;
}
return true;
}
public void setFont(Font font) {
/* replacing the reference equality test font != this.font with
* !font.equals(this.font) did not yield any measurable difference
* in testing, but there may be yet to be identified cases where it
* is beneficial.
*/
if (font != null && font!=this.font/*!font.equals(this.font)*/) {
/* In the GASP AA case the textpipe depends on the glyph size
* as determined by graphics and font transforms as well as the
* font size, and information in the font. But we may invalidate
* the pipe only to find that it made no difference.
* Deferring pipe invalidation to checkFontInfo won't work because
* when called we may already be rendering to the wrong pipe.
* So, if the font is transformed, or the graphics has more than
* a simple scale, we'll take that as enough of a hint to
* revalidate everything. But if they aren't we will
* use the font's point size to query the gasp table and see if
* what it says matches what's currently being used, in which
* case there's no need to invalidate the textpipe.
* This should be sufficient for all typical uses cases.
*/
if (textAntialiasHint == SunHints.INTVAL_TEXT_ANTIALIAS_GASP &&
textpipe != invalidpipe &&
(transformState > TRANSFORM_ANY_TRANSLATE ||
font.isTransformed() ||
fontInfo == null || // Precaution, if true shouldn't get here
(fontInfo.aaHint == SunHints.INTVAL_TEXT_ANTIALIAS_ON) !=
FontUtilities.getFont2D(font).
useAAForPtSize(font.getSize()))) {
textpipe = invalidpipe;
}
this.font = font;
this.fontMetrics = null;
this.validFontInfo = false;
}
}
public FontInfo getFontInfo() {
if (!validFontInfo) {
this.fontInfo = checkFontInfo(this.fontInfo, font, null);
validFontInfo = true;
}
return this.fontInfo;
}
/* Used by drawGlyphVector which specifies its own font. */
public FontInfo getGVFontInfo(Font font, FontRenderContext frc) {
if (glyphVectorFontInfo != null &&
glyphVectorFontInfo.font == font &&
glyphVectorFRC == frc) {
return glyphVectorFontInfo;
} else {
glyphVectorFRC = frc;
return glyphVectorFontInfo =
checkFontInfo(glyphVectorFontInfo, font, frc);
}
}
public FontMetrics getFontMetrics() {
if (this.fontMetrics != null) {
return this.fontMetrics;
}
/* NB the constructor and the setter disallow "font" being null */
return this.fontMetrics =
FontDesignMetrics.getMetrics(font, getFontRenderContext());
}
public FontMetrics getFontMetrics(Font font) {
if ((this.fontMetrics != null) && (font == this.font)) {
return this.fontMetrics;
}
FontMetrics fm =
FontDesignMetrics.getMetrics(font, getFontRenderContext());
if (this.font == font) {
this.fontMetrics = fm;
}
return fm;
}
/**
* Checks to see if a Path intersects the specified Rectangle in device
* space. The rendering attributes taken into account include the
* clip, transform, and stroke attributes.
* @param rect The area in device space to check for a hit.
* @param s The path to check for a hit.
* @param onStroke Flag to choose between testing the stroked or
* the filled path.
* @return True if there is a hit, false otherwise.
* @see #setStroke
* @see #fill(Shape)
* @see #draw(Shape)
* @see #transform
* @see #setTransform
* @see #clip
* @see #setClip
*/
public boolean hit(Rectangle rect, Shape s, boolean onStroke) {
if (onStroke) {
s = stroke.createStrokedShape(s);
}
s = transformShape(s);
if ((constrainX|constrainY) != 0) {
rect = new Rectangle(rect);
rect.translate(constrainX, constrainY);
}
return s.intersects(rect);
}
/**
* Return the ColorModel associated with this Graphics2D.
*/
public ColorModel getDeviceColorModel() {
return surfaceData.getColorModel();
}
/**
* Return the device configuration associated with this Graphics2D.
*/
public GraphicsConfiguration getDeviceConfiguration() {
return surfaceData.getDeviceConfiguration();
}
/**
* Return the SurfaceData object assigned to manage the destination
* drawable surface of this Graphics2D.
*/
public SurfaceData getSurfaceData() {
return surfaceData;
}
/**
* Sets the Composite in the current graphics state. Composite is used
* in all drawing methods such as drawImage, drawString, drawPath,
* and fillPath. It specifies how new pixels are to be combined with
* the existing pixels on the graphics device in the rendering process.
* @param comp The Composite object to be used for drawing.
* @see java.awt.Graphics#setXORMode
* @see java.awt.Graphics#setPaintMode
* @see AlphaComposite
*/
public void setComposite(Composite comp) {
if (composite == comp) {
return;
}
int newCompState;
CompositeType newCompType;
if (comp instanceof AlphaComposite) {
AlphaComposite alphacomp = (AlphaComposite) comp;
newCompType = CompositeType.forAlphaComposite(alphacomp);
if (newCompType == CompositeType.SrcOverNoEa) {
if (paintState == PAINT_OPAQUECOLOR ||
(paintState > PAINT_ALPHACOLOR &&
paint.getTransparency() == Transparency.OPAQUE))
{
newCompState = COMP_ISCOPY;
} else {
newCompState = COMP_ALPHA;
}
} else if (newCompType == CompositeType.SrcNoEa ||
newCompType == CompositeType.Src ||
newCompType == CompositeType.Clear)
{
newCompState = COMP_ISCOPY;
} else if (surfaceData.getTransparency() == Transparency.OPAQUE &&
newCompType == CompositeType.SrcIn)
{
newCompState = COMP_ISCOPY;
} else {
newCompState = COMP_ALPHA;
}
} else if (comp instanceof XORComposite) {
newCompState = COMP_XOR;
newCompType = CompositeType.Xor;
} else if (comp == null) {
throw new IllegalArgumentException("null Composite");
} else {
surfaceData.checkCustomComposite();
newCompState = COMP_CUSTOM;
newCompType = CompositeType.General;
}
if (compositeState != newCompState ||
imageComp != newCompType)
{
compositeState = newCompState;
imageComp = newCompType;
invalidatePipe();
validFontInfo = false;
}
composite = comp;
if (paintState <= PAINT_ALPHACOLOR) {
validateColor();
}
}
/**
* Sets the Paint in the current graphics state.
* @param paint The Paint object to be used to generate color in
* the rendering process.
* @see java.awt.Graphics#setColor
* @see GradientPaint