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src/java.desktop/share/classes/sun/java2d/pipe/SpanClipRenderer.java

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   1 /*
   2  * Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


  37 public class SpanClipRenderer implements CompositePipe
  38 {
  39     CompositePipe outpipe;
  40 
  41     static Class<?> RegionClass = Region.class;
  42     static Class<?> RegionIteratorClass = RegionIterator.class;
  43 
  44     static {
  45         initIDs(RegionClass, RegionIteratorClass);
  46     }
  47 
  48     static native void initIDs(Class<?> rc, Class<?> ric);
  49 
  50     public SpanClipRenderer(CompositePipe pipe) {
  51         outpipe = pipe;
  52     }
  53 
  54     class SCRcontext {
  55         RegionIterator iterator;
  56         Object outcontext;
  57         int band[];
  58         byte tile[];
  59 
  60         public SCRcontext(RegionIterator ri, Object outctx) {
  61             iterator = ri;
  62             outcontext = outctx;
  63             band = new int[4];
  64         }
  65     }
  66 
  67     public Object startSequence(SunGraphics2D sg, Shape s, Rectangle devR,
  68                                 int[] abox) {
  69         RegionIterator ri = sg.clipRegion.getIterator();
  70 
  71         return new SCRcontext(ri, outpipe.startSequence(sg, s, devR, abox));
  72     }
  73 
  74     public boolean needTile(Object ctx, int x, int y, int w, int h) {
  75         SCRcontext context = (SCRcontext) ctx;
  76         return (outpipe.needTile(context.outcontext, x, y, w, h));
  77     }
  78 


   1 /*
   2  * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


  37 public class SpanClipRenderer implements CompositePipe
  38 {
  39     CompositePipe outpipe;
  40 
  41     static Class<?> RegionClass = Region.class;
  42     static Class<?> RegionIteratorClass = RegionIterator.class;
  43 
  44     static {
  45         initIDs(RegionClass, RegionIteratorClass);
  46     }
  47 
  48     static native void initIDs(Class<?> rc, Class<?> ric);
  49 
  50     public SpanClipRenderer(CompositePipe pipe) {
  51         outpipe = pipe;
  52     }
  53 
  54     class SCRcontext {
  55         RegionIterator iterator;
  56         Object outcontext;
  57         int[] band;
  58         byte[] tile;
  59 
  60         public SCRcontext(RegionIterator ri, Object outctx) {
  61             iterator = ri;
  62             outcontext = outctx;
  63             band = new int[4];
  64         }
  65     }
  66 
  67     public Object startSequence(SunGraphics2D sg, Shape s, Rectangle devR,
  68                                 int[] abox) {
  69         RegionIterator ri = sg.clipRegion.getIterator();
  70 
  71         return new SCRcontext(ri, outpipe.startSequence(sg, s, devR, abox));
  72     }
  73 
  74     public boolean needTile(Object ctx, int x, int y, int w, int h) {
  75         SCRcontext context = (SCRcontext) ctx;
  76         return (outpipe.needTile(context.outcontext, x, y, w, h));
  77     }
  78 


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