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}.
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 }
--- EOF ---