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This is a backport of OpenJFX 8 to run on Java 7.
The newest version!
/*
* Copyright (c) 2012, 2013, 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
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*/
package com.sun.prism.impl.shape;
import com.sun.glass.utils.NativeLibLoader;
import com.sun.javafx.geom.Path2D;
import com.sun.javafx.geom.PathIterator;
import com.sun.javafx.geom.RectBounds;
import com.sun.javafx.geom.Shape;
import com.sun.javafx.geom.transform.BaseTransform;
import com.sun.prism.BasicStroke;
import com.sun.prism.impl.PrismSettings;
import java.nio.ByteBuffer;
import java.security.AccessController;
import java.security.PrivilegedAction;
public class NativePiscesRasterizer implements ShapeRasterizer {
private static MaskData emptyData = MaskData.create(new byte[1], 0, 0, 1, 1);
private static final byte SEG_MOVETO = PathIterator.SEG_MOVETO;
private static final byte SEG_LINETO = PathIterator.SEG_LINETO;
private static final byte SEG_QUADTO = PathIterator.SEG_QUADTO;
private static final byte SEG_CUBICTO = PathIterator.SEG_CUBICTO;
private static final byte SEG_CLOSE = PathIterator.SEG_CLOSE;
private byte cachedMask[];
private ByteBuffer cachedBuffer;
private MaskData cachedData;
private int bounds[] = new int[4];
native static void init(int subpixelLgPositionsX, int subpixelLgPositionsY);
native static void produceFillAlphas(float coords[], byte commands[], int nsegs, boolean nonzero,
double mxx, double mxy, double mxt,
double myx, double myy, double myt,
int bounds[], byte mask[]);
native static void produceStrokeAlphas(float coords[], byte commands[], int nsegs,
float lw, int cap, int join, float mlimit,
float dashes[], float dashoff,
double mxx, double mxy, double mxt,
double myx, double myy, double myt,
int bounds[], byte mask[]);
static {
AccessController.doPrivileged(new PrivilegedAction() {
@Override
public Void run() {
String libName = "prism-common";
if (PrismSettings.verbose) {
System.out.println("Loading Prism common native library ...");
}
NativeLibLoader.loadLibrary(libName);
if (PrismSettings.verbose) {
System.out.println("\tsucceeded.");
}
return null;
}
});
init(3, 3);
}
@Override
public MaskData getMaskData(Shape shape, BasicStroke stroke,
RectBounds xformBounds, BaseTransform xform,
boolean close)
{
if (stroke != null && stroke.getType() != BasicStroke.TYPE_CENTERED) {
// RT-27427
// TODO: Optimize the combinatorial strokes for simple
// shapes and/or teach the rasterizer to be able to
// do a "differential fill" between two shapes.
// Note that most simple shapes will use a more optimized path
// than this method for the INNER/OUTER strokes anyway.
shape = stroke.createStrokedShape(shape);
stroke = null;
}
if (xformBounds == null) {
if (stroke != null) {
// Note that all places that pass null for xformbounds also
// pass null for stroke so that the following is not typically
// executed, but just here as a safety net.
shape = stroke.createStrokedShape(shape);
stroke = null;
}
xformBounds = new RectBounds();
//TODO: Need to verify that this is a safe cast ... (RT-27427)
xformBounds = (RectBounds) xform.transform(shape.getBounds(), xformBounds);
}
bounds[0] = (int) Math.floor(xformBounds.getMinX());
bounds[1] = (int) Math.floor(xformBounds.getMinY());
bounds[2] = (int) Math.ceil(xformBounds.getMaxX());
bounds[3] = (int) Math.ceil(xformBounds.getMaxY());
if (bounds[2] <= bounds[0] || bounds[3] <= bounds[1]) {
return emptyData;
}
Path2D p2d = (shape instanceof Path2D) ? (Path2D) shape : new Path2D(shape);
double mxx, mxy, mxt, myx, myy, myt;
if (xform == null || xform.isIdentity()) {
mxx = myy = 1.0;
mxy = myx = 0.0;
mxt = myt = 0.0;
} else {
mxx = xform.getMxx();
mxy = xform.getMxy();
mxt = xform.getMxt();
myx = xform.getMyx();
myy = xform.getMyy();
myt = xform.getMyt();
}
int x = bounds[0];
int y = bounds[1];
int w = bounds[2] - x;
int h = bounds[3] - y;
if (w <= 0 || h <= 0) {
return emptyData;
}
if (cachedMask == null || w * h > cachedMask.length) {
cachedMask = null;
cachedBuffer = null;
cachedData = new MaskData();
int csize = (w * h + 0xfff) & (~0xfff);
cachedMask = new byte[csize];
cachedBuffer = ByteBuffer.wrap(cachedMask);
}
if (stroke != null) {
produceStrokeAlphas(p2d.getFloatCoordsNoClone(),
p2d.getCommandsNoClone(),
p2d.getNumCommands(),
stroke.getLineWidth(), stroke.getEndCap(),
stroke.getLineJoin(), stroke.getMiterLimit(),
stroke.getDashArray(), stroke.getDashPhase(),
mxx, mxy, mxt, myx, myy, myt,
bounds, cachedMask);
} else {
produceFillAlphas(p2d.getFloatCoordsNoClone(),
p2d.getCommandsNoClone(),
p2d.getNumCommands(), p2d.getWindingRule() == Path2D.WIND_NON_ZERO,
mxx, mxy, mxt, myx, myy, myt,
bounds, cachedMask);
}
x = bounds[0];
y = bounds[1];
w = bounds[2] - x;
h = bounds[3] - y;
if (w <= 0 || h <= 0) {
return emptyData;
}
cachedData.update(cachedBuffer, x, y, w, h);
return cachedData;
}
}