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/*
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* Copyright 1999-2004 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package sun.java2d.loops;
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import java.awt.Composite;
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import java.awt.CompositeContext;
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import java.awt.RenderingHints;
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import java.awt.image.ColorModel;
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import java.awt.image.Raster;
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import java.awt.image.WritableRaster;
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import java.lang.ref.WeakReference;
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import sun.java2d.loops.GraphicsPrimitive;
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import sun.java2d.SurfaceData;
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import sun.java2d.pipe.Region;
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import sun.java2d.pipe.SpanIterator;
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/**
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* Blit
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* 1) copies rectangle of pixels from one surface to another
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* 2) performs compositing of colors based upon a Composite
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* parameter
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*
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* precise behavior is undefined if the source surface
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* and the destination surface are the same surface
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* with overlapping regions of pixels
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*/
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public class Blit extends GraphicsPrimitive
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{
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public static final String methodSignature = "Blit(...)".toString();
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public static final int primTypeID = makePrimTypeID();
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private static RenderCache blitcache = new RenderCache(20);
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public static Blit locate(SurfaceType srctype,
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CompositeType comptype,
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SurfaceType dsttype)
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{
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return (Blit)
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GraphicsPrimitiveMgr.locate(primTypeID,
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srctype, comptype, dsttype);
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}
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public static Blit getFromCache(SurfaceType src,
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CompositeType comp,
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SurfaceType dst)
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{
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Object o = blitcache.get(src, comp, dst);
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if (o != null) {
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return (Blit) o;
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}
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Blit blit = locate(src, comp, dst);
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if (blit == null) {
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System.out.println("blit loop not found for:");
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System.out.println("src: "+src);
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System.out.println("comp: "+comp);
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System.out.println("dst: "+dst);
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} else {
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blitcache.put(src, comp, dst, blit);
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}
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return blit;
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}
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protected Blit(SurfaceType srctype,
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CompositeType comptype,
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SurfaceType dsttype)
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{
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super(methodSignature, primTypeID, srctype, comptype, dsttype);
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}
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public Blit(long pNativePrim,
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SurfaceType srctype,
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CompositeType comptype,
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SurfaceType dsttype)
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{
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super(pNativePrim, methodSignature, primTypeID, srctype, comptype, dsttype);
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}
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/**
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* All Blit implementors must have this invoker method
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*/
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public native void Blit(SurfaceData src, SurfaceData dst,
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Composite comp, Region clip,
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int srcx, int srcy,
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int dstx, int dsty,
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int width, int height);
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static {
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GraphicsPrimitiveMgr.registerGeneral(new Blit(null, null, null));
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}
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public GraphicsPrimitive makePrimitive(SurfaceType srctype,
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CompositeType comptype,
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SurfaceType dsttype)
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{
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/*
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System.out.println("Constructing general blit for:");
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System.out.println("src: "+srctype);
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System.out.println("comp: "+comptype);
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System.out.println("dst: "+dsttype);
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*/
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if (comptype.isDerivedFrom(CompositeType.Xor)) {
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GeneralXorBlit gxb = new GeneralXorBlit(srctype,
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comptype,
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dsttype);
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setupGeneralBinaryOp(gxb);
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return gxb;
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} else if (comptype.isDerivedFrom(CompositeType.AnyAlpha)) {
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return new GeneralMaskBlit(srctype, comptype, dsttype);
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} else {
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return AnyBlit.instance;
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}
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}
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private static class AnyBlit extends Blit {
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public static AnyBlit instance = new AnyBlit();
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public AnyBlit() {
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super(SurfaceType.Any, CompositeType.Any, SurfaceType.Any);
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}
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public void Blit(SurfaceData srcData,
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SurfaceData dstData,
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Composite comp,
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Region clip,
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int srcx, int srcy,
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int dstx, int dsty,
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int width, int height)
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{
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ColorModel srcCM = srcData.getColorModel();
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ColorModel dstCM = dstData.getColorModel();
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// REMIND: Should get RenderingHints from sg2d
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CompositeContext ctx = comp.createContext(srcCM, dstCM,
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new RenderingHints(null));
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Raster srcRas = srcData.getRaster(srcx, srcy, width, height);
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WritableRaster dstRas =
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(WritableRaster) dstData.getRaster(dstx, dsty, width, height);
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if (clip == null) {
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clip = Region.getInstanceXYWH(dstx, dsty, width, height);
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}
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int span[] = {dstx, dsty, dstx+width, dsty+height};
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SpanIterator si = clip.getSpanIterator(span);
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srcx -= dstx;
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srcy -= dsty;
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while (si.nextSpan(span)) {
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int w = span[2] - span[0];
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int h = span[3] - span[1];
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srcRas = srcRas.createChild(srcx + span[0], srcy + span[1],
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w, h, 0, 0, null);
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dstRas = dstRas.createWritableChild(span[0], span[1],
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w, h, 0, 0, null);
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ctx.compose(srcRas, dstRas, dstRas);
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}
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ctx.dispose();
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}
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}
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private static class GeneralMaskBlit extends Blit {
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MaskBlit performop;
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public GeneralMaskBlit(SurfaceType srctype,
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CompositeType comptype,
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SurfaceType dsttype)
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{
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super(srctype, comptype, dsttype);
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performop = MaskBlit.locate(srctype, comptype, dsttype);
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}
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public void Blit(SurfaceData srcData,
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SurfaceData dstData,
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Composite comp,
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Region clip,
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int srcx, int srcy,
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int dstx, int dsty,
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int width, int height)
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{
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performop.MaskBlit(srcData, dstData, comp, clip,
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srcx, srcy, dstx, dsty,
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width, height,
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null, 0, 0);
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}
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}
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private static class GeneralXorBlit
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extends Blit
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implements GeneralBinaryOp
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{
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Blit convertsrc;
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Blit convertdst;
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Blit performop;
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Blit convertresult;
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WeakReference srcTmp;
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WeakReference dstTmp;
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public GeneralXorBlit(SurfaceType srctype,
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CompositeType comptype,
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SurfaceType dsttype)
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{
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super(srctype, comptype, dsttype);
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}
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public void setPrimitives(Blit srcconverter,
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Blit dstconverter,
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GraphicsPrimitive genericop,
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Blit resconverter)
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{
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this.convertsrc = srcconverter;
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this.convertdst = dstconverter;
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this.performop = (Blit) genericop;
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this.convertresult = resconverter;
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}
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public synchronized void Blit(SurfaceData srcData,
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SurfaceData dstData,
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Composite comp,
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Region clip,
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int srcx, int srcy,
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int dstx, int dsty,
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int width, int height)
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{
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SurfaceData src, dst;
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Region opclip;
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int sx, sy, dx, dy;
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if (convertsrc == null) {
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src = srcData;
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sx = srcx;
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sy = srcy;
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} else {
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SurfaceData cachedSrc = null;
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if (srcTmp != null) {
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cachedSrc = (SurfaceData) srcTmp.get();
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}
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src = convertFrom(convertsrc, srcData, srcx, srcy,
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width, height, cachedSrc);
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sx = 0;
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sy = 0;
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if (src != cachedSrc) {
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srcTmp = new WeakReference(src);
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}
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}
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if (convertdst == null) {
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dst = dstData;
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dx = dstx;
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dy = dsty;
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opclip = clip;
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} else {
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// assert: convertresult != null
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SurfaceData cachedDst = null;
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if (dstTmp != null) {
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cachedDst = (SurfaceData) dstTmp.get();
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}
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dst = convertFrom(convertdst, dstData, dstx, dsty,
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width, height, cachedDst);
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dx = 0;
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dy = 0;
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opclip = null;
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if (dst != cachedDst) {
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dstTmp = new WeakReference(dst);
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}
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}
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performop.Blit(src, dst, comp, opclip,
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sx, sy, dx, dy,
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width, height);
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if (convertresult != null) {
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// assert: convertdst != null
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convertTo(convertresult, dst, dstData, clip,
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dstx, dsty, width, height);
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}
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}
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}
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public GraphicsPrimitive traceWrap() {
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return new TraceBlit(this);
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}
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private static class TraceBlit extends Blit {
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Blit target;
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public TraceBlit(Blit target) {
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super(target.getSourceType(),
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target.getCompositeType(),
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target.getDestType());
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this.target = target;
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}
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public GraphicsPrimitive traceWrap() {
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return this;
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}
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public void Blit(SurfaceData src, SurfaceData dst,
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Composite comp, Region clip,
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int srcx, int srcy, int dstx, int dsty,
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int width, int height)
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{
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tracePrimitive(target);
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target.Blit(src, dst, comp, clip,
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srcx, srcy, dstx, dsty, width, height);
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}
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}
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}
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