/*
* Copyright (c) 2010, 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.xr;
import java.awt.*;
import java.awt.MultipleGradientPaint.*;
import java.awt.image.*;
import sun.java2d.loops.*;
import static java.awt.AlphaComposite.*;
/**
* XRender constants and utility methods.
*
* @author Clemens Eisserer
*/
public class XRUtils {
public static final int None = 0;
/* Composition Operators */
public static final byte PictOpClear = 0;
public static final byte PictOpSrc = 1;
public static final byte PictOpDst = 2;
public static final byte PictOpOver = 3;
public static final byte PictOpOverReverse = 4;
public static final byte PictOpIn = 5;
public static final byte PictOpInReverse = 6;
public static final byte PictOpOut = 7;
public static final byte PictOpOutReverse = 8;
public static final byte PictOpAtop = 9;
public static final byte PictOpAtopReverse = 10;
public static final byte PictOpXor = 11;
public static final byte PictOpAdd = 12;
public static final byte PictOpSaturate = 13;
/* Repeats */
public static final int RepeatNone = 0;
public static final int RepeatNormal = 1;
public static final int RepeatPad = 2;
public static final int RepeatReflect = 3;
/* Interpolation qualities */
public static final int FAST = 0;
public static final int GOOD = 1;
public static final int BEST = 2;
public static final byte[] FAST_NAME = "fast".getBytes();
public static final byte[] GOOD_NAME = "good".getBytes();
public static final byte[] BEST_NAME = "best".getBytes();
/* PictFormats */
public static final int PictStandardARGB32 = 0;
public static final int PictStandardRGB24 = 1;
public static final int PictStandardA8 = 2;
public static final int PictStandardA4 = 3;
public static final int PictStandardA1 = 4;
/**
* Maps the specified affineTransformOp to the corresponding XRender image
* filter.
*/
public static int ATransOpToXRQuality(int affineTranformOp) {
switch (affineTranformOp) {
case AffineTransformOp.TYPE_NEAREST_NEIGHBOR:
return FAST;
case AffineTransformOp.TYPE_BILINEAR:
return GOOD;
case AffineTransformOp.TYPE_BICUBIC:
return BEST;
}
return -1;
}
/**
* Maps the specified affineTransformOp to the corresponding XRender image
* filter.
*/
public static byte[] ATransOpToXRQualityName(int affineTranformOp) {
switch (affineTranformOp) {
case AffineTransformOp.TYPE_NEAREST_NEIGHBOR:
return FAST_NAME;
case AffineTransformOp.TYPE_BILINEAR:
return GOOD_NAME;
case AffineTransformOp.TYPE_BICUBIC:
return BEST_NAME;
}
return null;
}
public static byte[] getFilterName(int filterType) {
switch (filterType) {
case FAST:
return FAST_NAME;
case GOOD:
return GOOD_NAME;
case BEST:
return BEST_NAME;
}
return null;
}
/**
* Returns the XRender picture Format which is required to fullfill the
* Java2D transparency requirement.
*/
public static int getPictureFormatForTransparency(int transparency) {
switch (transparency) {
case Transparency.OPAQUE:
return PictStandardRGB24;
case Transparency.BITMASK:
case Transparency.TRANSLUCENT:
return PictStandardARGB32;
}
return -1;
}
public static SurfaceType getXRSurfaceTypeForTransparency(int transparency) {
if (transparency == Transparency.OPAQUE) {
return SurfaceType.IntRgb;
}else {
return SurfaceType.IntArgbPre;
}
}
/**
* Maps Java2D CycleMethod to XRender's Repeat property.
*/
public static int getRepeatForCycleMethod(CycleMethod cycleMethod) {
if (cycleMethod.equals(CycleMethod.NO_CYCLE)) {
return RepeatPad;
} else if (cycleMethod.equals(CycleMethod.REFLECT)) {
return RepeatReflect;
} else if (cycleMethod.equals(CycleMethod.REPEAT)) {
return RepeatNormal;
}
return RepeatNone;
}
/**
* Converts a double into an XFixed.
*/
public static int XDoubleToFixed(double dbl) {
return (int) (dbl * 65536);
}
public static double XFixedToDouble(int fixed) {
return ((double) fixed) / 65536;
}
public static int[] convertFloatsToFixed(float[] values) {
int[] fixed = new int[values.length];
for (int i = 0; i < values.length; i++) {
fixed[i] = XDoubleToFixed(values[i]);
}
return fixed;
}
public static long intToULong(int signed) {
if (signed < 0) {
return ((long) signed) + (((long) Integer.MAX_VALUE) -
((long) Integer.MIN_VALUE) + 1);
}
return signed;
}
/**
* Maps the specified Java2D composition rule, to the corresponding XRender
* composition rule.
*/
public static byte j2dAlphaCompToXR(int j2dRule) {
switch (j2dRule) {
case CLEAR:
return PictOpClear;
case SRC:
return PictOpSrc;
case DST:
return PictOpDst;
case SRC_OVER:
return PictOpOver;
case DST_OVER:
return PictOpOverReverse;
case SRC_IN:
return PictOpIn;
case DST_IN:
return PictOpInReverse;
case SRC_OUT:
return PictOpOut;
case DST_OUT:
return PictOpOutReverse;
case SRC_ATOP:
return PictOpAtop;
case DST_ATOP:
return PictOpAtopReverse;
case XOR:
return PictOpXor;
}
throw new InternalError("No XRender equivalent available for requested java2d composition rule: "+j2dRule);
}
public static short clampToShort(int x) {
return (short) (x > Short.MAX_VALUE
? Short.MAX_VALUE
: (x < Short.MIN_VALUE ? Short.MIN_VALUE : x));
}
public static short clampToUShort(int x) {
return (short) (x > 65535 ? 65535 : (x < 0) ? 0 : x);
}
}