source: josm/trunk/src/com/kitfox/svg/composite/AdobeCompositeContext.java@ 10746

Last change on this file since 10746 was 8084, checked in by bastiK, 10 years ago

add svn:eol-style=native for svgsalamander

  • Property svn:eol-style set to native
File size: 3.7 KB
Line 
1/*
2 * SVG Salamander
3 * Copyright (c) 2004, Mark McKay
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or
7 * without modification, are permitted provided that the following
8 * conditions are met:
9 *
10 * - Redistributions of source code must retain the above
11 * copyright notice, this list of conditions and the following
12 * disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials
16 * provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
23 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
29 * OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * Mark McKay can be contacted at mark@kitfox.com. Salamander and other
32 * projects can be found at http://www.kitfox.com
33 *
34 * Created on April 1, 2004, 6:41 AM
35 */
36
37package com.kitfox.svg.composite;
38
39import java.awt.*;
40import java.awt.image.*;
41
42/**
43 * @author Mark McKay
44 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
45 */
46public class AdobeCompositeContext implements CompositeContext
47{
48 final int compositeType;
49 final float extraAlpha;
50
51 float[] rgba_src = new float[4];
52 float[] rgba_dstIn = new float[4];
53 float[] rgba_dstOut = new float[4];
54
55 /** Creates a new instance of AdobeCompositeContext */
56 public AdobeCompositeContext(int compositeType, float extraAlpha)
57 {
58 this.compositeType = compositeType;
59 this.extraAlpha = extraAlpha;
60
61 rgba_dstOut[3] = 1f;
62 }
63
64 public void compose(Raster src, Raster dstIn, WritableRaster dstOut)
65 {
66 int width = src.getWidth();
67 int height = src.getHeight();
68
69 for (int j = 0; j < height; j++)
70 {
71 for (int i = 0; i < width; i++)
72 {
73 src.getPixel(i, j, rgba_src);
74 dstIn.getPixel(i, j, rgba_dstIn);
75
76 //Ignore transparent pixels
77 if (rgba_src[3] == 0)
78 {
79// dstOut.setPixel(i, j, rgba_dstIn);
80 continue;
81 }
82
83 float alpha = rgba_src[3];
84
85 switch (compositeType)
86 {
87 default:
88 case AdobeComposite.CT_NORMAL:
89 rgba_dstOut[0] = rgba_src[0] * alpha + rgba_dstIn[0] * (1f - alpha);
90 rgba_dstOut[1] = rgba_src[1] * alpha + rgba_dstIn[1] * (1f - alpha);
91 rgba_dstOut[2] = rgba_src[2] * alpha + rgba_dstIn[2] * (1f - alpha);
92 break;
93 case AdobeComposite.CT_MULTIPLY:
94 rgba_dstOut[0] = rgba_src[0] * rgba_dstIn[0] * alpha + rgba_dstIn[0] * (1f - alpha);
95 rgba_dstOut[1] = rgba_src[1] * rgba_dstIn[1] * alpha + rgba_dstIn[1] * (1f - alpha);
96 rgba_dstOut[2] = rgba_src[2] * rgba_dstIn[2] * alpha + rgba_dstIn[2] * (1f - alpha);
97 break;
98 }
99 }
100 }
101 }
102
103 public void dispose() {
104 }
105
106}
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