1 /*
   2  * Copyright (c) 1997, 2010, 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
  23  * questions.
  24  */
  25 
  26 package sun.java2d.pipe;
  27 
  28 import java.awt.Rectangle;
  29 import java.awt.Shape;
  30 import sun.java2d.SunGraphics2D;
  31 
  32 /**
  33  * This class implements a CompositePipe that renders path alpha tiles
  34  * into a destination that supports direct alpha compositing of a solid
  35  * color, according to one of the rules in the AlphaComposite class.
  36  */
  37 public class AlphaColorPipe implements CompositePipe, ParallelogramPipe {
  38     public AlphaColorPipe() {
  39     }
  40 
  41     public Object startSequence(SunGraphics2D sg, Shape s, Rectangle dev,
  42                                 int[] abox) {
  43         return sg;
  44     }
  45 
  46     public boolean needTile(Object context, int x, int y, int w, int h) {
  47         return true;
  48     }
  49 
  50     public void renderPathTile(Object context,
  51                                byte[] atile, int offset, int tilesize,
  52                                int x, int y, int w, int h) {
  53         SunGraphics2D sg = (SunGraphics2D) context;
  54 
  55         sg.alphafill.MaskFill(sg, sg.getSurfaceData(), sg.composite,
  56                               x, y, w, h,
  57                               atile, offset, tilesize);
  58     }
  59 
  60     public void skipTile(Object context, int x, int y) {
  61         return;
  62     }
  63 
  64     public void endSequence(Object context) {
  65         return;
  66     }
  67 
  68     public void fillParallelogram(SunGraphics2D sg,
  69                                   double x, double y,
  70                                   double dx1, double dy1,
  71                                   double dx2, double dy2)
  72     {
  73         sg.alphafill.FillAAPgram(sg, sg.getSurfaceData(), sg.composite,
  74                                  x, y, dx1, dy1, dx2, dy2);
  75     }
  76 
  77     public void drawParallelogram(SunGraphics2D sg,
  78                                   double x, double y,
  79                                   double dx1, double dy1,
  80                                   double dx2, double dy2,
  81                                   double lw1, double lw2)
  82     {
  83         sg.alphafill.DrawAAPgram(sg, sg.getSurfaceData(), sg.composite,
  84                                  x, y, dx1, dy1, dx2, dy2, lw1, lw2);
  85     }
  86 }