Java example source code file (CustomComponent.java)
The CustomComponent.java Java example source code
/*
* Copyright (c) 1997, 2007, 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.
*/
/*
* @author Charlton Innovations, Inc.
* @author Jim Graham
*/
package sun.java2d.loops;
import java.awt.Composite;
import java.awt.Rectangle;
import java.awt.image.ColorModel;
import java.awt.image.DataBuffer;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import sun.awt.image.IntegerComponentRaster;
import sun.java2d.SurfaceData;
import sun.java2d.pipe.Region;
import sun.java2d.pipe.SpanIterator;
/**
* CustomComponent, collection of GraphicsPrimitive
* Basically, this collection of components performs conversion from
* ANY to ANY via opaque copy
*/
public final class CustomComponent {
public static void register() {
// REMIND: This does not work for all destinations yet since
// the screen SurfaceData objects do not implement getRaster
Class owner = CustomComponent.class;
GraphicsPrimitive[] primitives = {
new GraphicsPrimitiveProxy(owner, "OpaqueCopyAnyToArgb",
Blit.methodSignature,
Blit.primTypeID,
SurfaceType.Any,
CompositeType.SrcNoEa,
SurfaceType.IntArgb),
new GraphicsPrimitiveProxy(owner, "OpaqueCopyArgbToAny",
Blit.methodSignature,
Blit.primTypeID,
SurfaceType.IntArgb,
CompositeType.SrcNoEa,
SurfaceType.Any),
new GraphicsPrimitiveProxy(owner, "XorCopyArgbToAny",
Blit.methodSignature,
Blit.primTypeID,
SurfaceType.IntArgb,
CompositeType.Xor,
SurfaceType.Any),
};
GraphicsPrimitiveMgr.register(primitives);
}
public static Region getRegionOfInterest(SurfaceData src, SurfaceData dst,
Region clip,
int srcx, int srcy,
int dstx, int dsty,
int w, int h)
{
/*
* Intersect all of:
* - operation area (dstx, dsty, w, h)
* - destination bounds
* - (translated) src bounds
* - supplied clip (may be non-rectangular)
* Intersect the rectangular regions first since those are
* simpler operations.
*/
Region ret = Region.getInstanceXYWH(dstx, dsty, w, h);
ret = ret.getIntersection(dst.getBounds());
Rectangle r = src.getBounds();
// srcxy in src space maps to dstxy in dst space
r.translate(dstx - srcx, dsty - srcy);
ret = ret.getIntersection(r);
if (clip != null) {
// Intersect with clip last since it may be non-rectangular
ret = ret.getIntersection(clip);
}
return ret;
}
}
/**
* ANY format to ARGB format Blit
*/
class OpaqueCopyAnyToArgb extends Blit {
OpaqueCopyAnyToArgb() {
super(SurfaceType.Any,
CompositeType.SrcNoEa,
SurfaceType.IntArgb);
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int srcx, int srcy, int dstx, int dsty, int w, int h)
{
Raster srcRast = src.getRaster(srcx, srcy, w, h);
ColorModel srcCM = src.getColorModel();
Raster dstRast = dst.getRaster(dstx, dsty, w, h);
IntegerComponentRaster icr = (IntegerComponentRaster) dstRast;
int[] dstPix = icr.getDataStorage();
Region roi = CustomComponent.getRegionOfInterest(src, dst, clip,
srcx, srcy,
dstx, dsty, w, h);
SpanIterator si = roi.getSpanIterator();
Object srcPix = null;
int dstScan = icr.getScanlineStride();
// assert(icr.getPixelStride() == 1);
srcx -= dstx;
srcy -= dsty;
int span[] = new int[4];
while (si.nextSpan(span)) {
int rowoff = icr.getDataOffset(0) + span[1] * dstScan + span[0];
for (int y = span[1]; y < span[3]; y++) {
int off = rowoff;
for (int x = span[0]; x < span[2]; x++) {
srcPix = srcRast.getDataElements(x+srcx, y+srcy, srcPix);
dstPix[off++] = srcCM.getRGB(srcPix);
}
rowoff += dstScan;
}
}
// Pixels in the dest were modified directly, we must
// manually notify the raster that it was modified
icr.markDirty();
// REMIND: We need to do something to make sure that dstRast
// is put back to the destination (as in the native Release
// function)
// src.releaseRaster(srcRast); // NOP?
// dst.releaseRaster(dstRast);
}
}
/**
* ARGB format to ANY format Blit
*/
class OpaqueCopyArgbToAny extends Blit {
OpaqueCopyArgbToAny() {
super(SurfaceType.IntArgb,
CompositeType.SrcNoEa,
SurfaceType.Any);
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int srcx, int srcy, int dstx, int dsty, int w, int h)
{
Raster srcRast = src.getRaster(srcx, srcy, w, h);
IntegerComponentRaster icr = (IntegerComponentRaster) srcRast;
int[] srcPix = icr.getDataStorage();
WritableRaster dstRast =
(WritableRaster) dst.getRaster(dstx, dsty, w, h);
ColorModel dstCM = dst.getColorModel();
Region roi = CustomComponent.getRegionOfInterest(src, dst, clip,
srcx, srcy,
dstx, dsty, w, h);
SpanIterator si = roi.getSpanIterator();
Object dstPix = null;
int srcScan = icr.getScanlineStride();
// assert(icr.getPixelStride() == 1);
srcx -= dstx;
srcy -= dsty;
int span[] = new int[4];
while (si.nextSpan(span)) {
int rowoff = (icr.getDataOffset(0) +
(srcy + span[1]) * srcScan +
(srcx + span[0]));
for (int y = span[1]; y < span[3]; y++) {
int off = rowoff;
for (int x = span[0]; x < span[2]; x++) {
dstPix = dstCM.getDataElements(srcPix[off++], dstPix);
dstRast.setDataElements(x, y, dstPix);
}
rowoff += srcScan;
}
}
// REMIND: We need to do something to make sure that dstRast
// is put back to the destination (as in the native Release
// function)
// src.releaseRaster(srcRast); // NOP?
// dst.releaseRaster(dstRast);
}
}
/**
* ARGB format to ANY format Blit (pixels are XORed together with XOR pixel)
*/
class XorCopyArgbToAny extends Blit {
XorCopyArgbToAny() {
super(SurfaceType.IntArgb,
CompositeType.Xor,
SurfaceType.Any);
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int srcx, int srcy, int dstx, int dsty, int w, int h)
{
Raster srcRast = src.getRaster(srcx, srcy, w, h);
IntegerComponentRaster icr = (IntegerComponentRaster) srcRast;
int[] srcPix = icr.getDataStorage();
WritableRaster dstRast =
(WritableRaster) dst.getRaster(dstx, dsty, w, h);
ColorModel dstCM = dst.getColorModel();
Region roi = CustomComponent.getRegionOfInterest(src, dst, clip,
srcx, srcy,
dstx, dsty, w, h);
SpanIterator si = roi.getSpanIterator();
int xorrgb = ((XORComposite)comp).getXorColor().getRGB();
Object xorPixel = dstCM.getDataElements(xorrgb, null);
Object srcPixel = null;
Object dstPixel = null;
int srcScan = icr.getScanlineStride();
// assert(icr.getPixelStride() == 1);
srcx -= dstx;
srcy -= dsty;
int span[] = new int[4];
while (si.nextSpan(span)) {
int rowoff = (icr.getDataOffset(0) +
(srcy + span[1]) * srcScan +
(srcx + span[0]));
for (int y = span[1]; y < span[3]; y++) {
int off = rowoff;
for (int x = span[0]; x < span[2]; x++) {
// REMIND: alpha bits of the destination pixel are
// currently altered by the XOR operation, but
// should be left untouched
srcPixel = dstCM.getDataElements(srcPix[off++], srcPixel);
dstPixel = dstRast.getDataElements(x, y, dstPixel);
switch (dstCM.getTransferType()) {
case DataBuffer.TYPE_BYTE:
byte[] bytesrcarr = (byte[]) srcPixel;
byte[] bytedstarr = (byte[]) dstPixel;
byte[] bytexorarr = (byte[]) xorPixel;
for (int i = 0; i < bytedstarr.length; i++) {
bytedstarr[i] ^= bytesrcarr[i] ^ bytexorarr[i];
}
break;
case DataBuffer.TYPE_SHORT:
case DataBuffer.TYPE_USHORT:
short[] shortsrcarr = (short[]) srcPixel;
short[] shortdstarr = (short[]) dstPixel;
short[] shortxorarr = (short[]) xorPixel;
for (int i = 0; i < shortdstarr.length; i++) {
shortdstarr[i] ^= shortsrcarr[i] ^ shortxorarr[i];
}
break;
case DataBuffer.TYPE_INT:
int[] intsrcarr = (int[]) srcPixel;
int[] intdstarr = (int[]) dstPixel;
int[] intxorarr = (int[]) xorPixel;
for (int i = 0; i < intdstarr.length; i++) {
intdstarr[i] ^= intsrcarr[i] ^ intxorarr[i];
}
break;
case DataBuffer.TYPE_FLOAT:
float[] floatsrcarr = (float[]) srcPixel;
float[] floatdstarr = (float[]) dstPixel;
float[] floatxorarr = (float[]) xorPixel;
for (int i = 0; i < floatdstarr.length; i++) {
int v = (Float.floatToIntBits(floatdstarr[i]) ^
Float.floatToIntBits(floatsrcarr[i]) ^
Float.floatToIntBits(floatxorarr[i]));
floatdstarr[i] = Float.intBitsToFloat(v);
}
break;
case DataBuffer.TYPE_DOUBLE:
double[] doublesrcarr = (double[]) srcPixel;
double[] doubledstarr = (double[]) dstPixel;
double[] doublexorarr = (double[]) xorPixel;
for (int i = 0; i < doubledstarr.length; i++) {
long v = (Double.doubleToLongBits(doubledstarr[i]) ^
Double.doubleToLongBits(doublesrcarr[i]) ^
Double.doubleToLongBits(doublexorarr[i]));
doubledstarr[i] = Double.longBitsToDouble(v);
}
break;
default:
throw new InternalError("Unsupported XOR pixel type");
}
dstRast.setDataElements(x, y, dstPixel);
}
rowoff += srcScan;
}
}
// REMIND: We need to do something to make sure that dstRast
// is put back to the destination (as in the native Release
// function)
// src.releaseRaster(srcRast); // NOP?
// dst.releaseRaster(dstRast);
}
}
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