libjava/java/awt/ColorPaintContext.java

   1 /* ColorPaintContext.java -- context for painting solid colors
   2    Copyright (C) 2002 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package java.awt;
  40
  41 import java.awt.image.ColorModel;
  42 import java.awt.image.Raster;
  43
  44 /**
  45  * This class provides a paint context which will fill a rectanglar region of
  46  * a raster scan with the given color. However, it is not yet completely
  47  * implemented.
  48  *
  49  * @author Eric Blake <ebb9@email.byu.edu>
  50  */
  51 class ColorPaintContext implements PaintContext
  52 {
  53   /**
  54    * The color to fill any raster with. Package visible for use in
  55    * SystemColor.
  56    */
  57   final int color;
  58
  59   /**
  60    * Create the context for a given color.
  61    *
  62    * @param c the solid color to use
  63    */
  64   ColorPaintContext(int c)
  65   {
  66     color = c;
  67   }
  68
  69   /**
  70    * Release the resources allocated for the paint. As the color is constant,
  71    * there aren't any resources.
  72    */
  73   public void dispose()
  74   {
  75   }
  76
  77   /**
  78    * Return the color model of this context. This ignores the model passed
  79    * in the request, since colors are always in sRGB.
  80    *
  81    * @return the context color model
  82    */
  83   public ColorModel getColorModel()
  84   {
  85     return ColorModel.getRGBdefault();
  86   }
  87
  88   /**
  89    * Return a raster containing the colors for the graphics operation.
  90    *
  91    * @param x the x-coordinate, in device space
  92    * @param y the y-coordinate, in device space
  93    * @param w the width, in device space
  94    * @param h the height, in device space
  95    * @return a raster for the given area and color
  96    */
  97   public Raster getRaster(int x, int y, int w, int h)
  98   {
  99     // XXX Implement. Sun uses undocumented implementation class
 100     // sun.awt.image.IntegerInterleavedRaster.
 101     throw new Error("not implemented");
 102   }
 103 } // class ColorPaintContext