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    1   /*
    2    * Copyright (c) 1997, 2007, 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   
   27   
   28   package java.awt;
   29   
   30   import java.awt.image.ColorModel;
   31   import java.awt.image.Raster;
   32   import java.awt.image.WritableRaster;
   33   import sun.awt.image.IntegerComponentRaster;
   34   import java.util.Arrays;
   35   
   36   class ColorPaintContext implements PaintContext {
   37       int color;
   38       WritableRaster savedTile;
   39   
   40       protected ColorPaintContext(int color, ColorModel cm) {
   41           this.color = color;
   42       }
   43   
   44       public void dispose() {
   45       }
   46   
   47       /*
   48        * Returns the RGB value representing the color in the default sRGB
   49        * {@link ColorModel}.
   50        * (Bits 24-31 are alpha, 16-23 are red, 8-15 are green, 0-7 are
   51        * blue).
   52        * @return the RGB value of the color in the default sRGB
   53        *         <code>ColorModel</code>.
   54        * @see java.awt.image.ColorModel#getRGBdefault
   55        * @see #getRed
   56        * @see #getGreen
   57        * @see #getBlue
   58        */
   59       int getRGB() {
   60           return color;
   61       }
   62   
   63       public ColorModel getColorModel() {
   64           return ColorModel.getRGBdefault();
   65       }
   66   
   67       public synchronized Raster getRaster(int x, int y, int w, int h) {
   68           WritableRaster t = savedTile;
   69   
   70           if (t == null || w > t.getWidth() || h > t.getHeight()) {
   71               t = getColorModel().createCompatibleWritableRaster(w, h);
   72               IntegerComponentRaster icr = (IntegerComponentRaster) t;
   73               Arrays.fill(icr.getDataStorage(), color);
   74               // Note - markDirty is probably unnecessary since icr is brand new
   75               icr.markDirty();
   76               if (w <= 64 && h <= 64) {
   77                   savedTile = t;
   78               }
   79           }
   80   
   81           return t;
   82       }
   83   }

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