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18 package org.apache.batik.ext.awt.image.rendered;
19
20
21 import java.awt.Point  ;
22 import java.awt.Transparency ;
23 import java.awt.color.ColorSpace ;
24 import java.awt.image.BufferedImage ;
25 import java.awt.image.ColorModel ;
26 import java.awt.image.ComponentColorModel ;
27 import java.awt.image.ComponentSampleModel ;
28 import java.awt.image.DataBuffer ;
29 import java.awt.image.DirectColorModel ;
30 import java.awt.image.Raster ;
31 import java.awt.image.SampleModel ;
32 import java.awt.image.SinglePixelPackedSampleModel ;
33 import java.awt.image.WritableRaster ;
34
35 import org.apache.batik.ext.awt.image.GraphicsUtil;
36
37
38
46 public class FormatRed extends AbstractRed {
47
48 public static CachableRed construct(CachableRed src, ColorModel cm) {
49 ColorModel srcCM = src.getColorModel();
50 if ((cm.hasAlpha() != srcCM.hasAlpha()) ||
51 (cm.isAlphaPremultiplied() != srcCM.isAlphaPremultiplied()))
52 return new FormatRed(src, cm);
53
54 if (cm.getNumComponents() != srcCM.getNumComponents())
55 throw new IllegalArgumentException
56 ("Incompatible ColorModel given");
57
58
59 if ((srcCM instanceof ComponentColorModel ) &&
60 (cm instanceof ComponentColorModel ))
61 return src;
62
63 if ((srcCM instanceof DirectColorModel ) &&
64 (cm instanceof DirectColorModel ))
65 return src;
66
67 return new FormatRed(src, cm);
68 }
69
70
73 public FormatRed(CachableRed cr, SampleModel sm) {
74 super(cr, cr.getBounds(),
75 makeColorModel(cr, sm), sm,
76 cr.getTileGridXOffset(),
77 cr.getTileGridYOffset(),
78 null);
79 }
80
81 public FormatRed(CachableRed cr, ColorModel cm) {
82 super(cr, cr.getBounds(),
83 cm, makeSampleModel(cr, cm),
84 cr.getTileGridXOffset(),
85 cr.getTileGridYOffset(),
86 null);
87 }
88
89
92 public CachableRed getSource() {
93 return (CachableRed)getSources().get(0);
94 }
95
96 public Object getProperty(String name) {
97 return getSource().getProperty(name);
98 }
99
100 public String [] getPropertyNames() {
101 return getSource().getPropertyNames();
102 }
103
104 public WritableRaster copyData(WritableRaster wr) {
105 ColorModel cm = getColorModel();
106 CachableRed cr = getSource();
107 ColorModel srcCM = cr.getColorModel();
108 SampleModel srcSM = cr.getSampleModel();
109 srcSM = srcSM.createCompatibleSampleModel(wr.getWidth(),
110 wr.getHeight());
111 WritableRaster srcWR;
112 srcWR = Raster.createWritableRaster(srcSM, new Point (wr.getMinX(),
113 wr.getMinY()));
114 getSource().copyData(srcWR);
115
116 BufferedImage srcBI = new BufferedImage
117 (srcCM, srcWR.createWritableTranslatedChild(0,0),
118 srcCM.isAlphaPremultiplied(), null);
119 BufferedImage dstBI = new BufferedImage
120 (cm, wr.createWritableTranslatedChild(0,0),
121 cm.isAlphaPremultiplied(), null);
122
123 GraphicsUtil.copyData(srcBI, dstBI);
124
125 return wr;
126 }
127
128 public static SampleModel makeSampleModel(CachableRed cr, ColorModel cm) {
129 SampleModel srcSM = cr.getSampleModel();
130 return cm.createCompatibleSampleModel(srcSM.getWidth(),
131 srcSM.getHeight());
132 }
133
134 public static ColorModel makeColorModel(CachableRed cr, SampleModel sm) {
135 ColorModel srcCM = cr.getColorModel();
136 ColorSpace cs = srcCM.getColorSpace();
137
138 int bands = sm.getNumBands();
139
140 int bits;
141 int dt = sm.getDataType();
142 switch (dt) {
143 case DataBuffer.TYPE_BYTE: bits=8; break;
144 case DataBuffer.TYPE_SHORT: bits=16; break;
145 case DataBuffer.TYPE_USHORT: bits=16; break;
146 case DataBuffer.TYPE_INT: bits=32; break;
147 default:
148 throw new IllegalArgumentException
149 ("Unsupported DataBuffer type: " + dt);
150 }
151
152 boolean hasAlpha = srcCM.hasAlpha();
153 if (hasAlpha){
154 if (bands == srcCM.getNumComponents()-1)
158 hasAlpha = false;
159 else if (bands != srcCM.getNumComponents())
160 throw new IllegalArgumentException
161 ("Incompatible number of bands in and out");
162 } else {
163 if (bands == srcCM.getNumComponents()+1)
164 hasAlpha = true;
165 else if (bands != srcCM.getNumComponents())
166 throw new IllegalArgumentException
167 ("Incompatible number of bands in and out");
168 }
169
170 boolean preMult = srcCM.isAlphaPremultiplied();
171 if (!hasAlpha)
172 preMult = false;
173
174 if (sm instanceof ComponentSampleModel ) {
175 int [] bitsPer = new int[bands];
176 for (int i=0; i<bands; i++)
177 bitsPer[i] = bits;
178
179 return new ComponentColorModel
180 (cs, bitsPer, hasAlpha, preMult,
181 hasAlpha ? Transparency.TRANSLUCENT : Transparency.OPAQUE,
182 dt);
183 } else if (sm instanceof SinglePixelPackedSampleModel ) {
184 SinglePixelPackedSampleModel sppsm;
185 sppsm = (SinglePixelPackedSampleModel )sm;
186 int masks [] = sppsm.getBitMasks();
187 if (bands == 4)
188 return new DirectColorModel
189 (cs, bits, masks[0], masks[1], masks[2], masks[3],
190 preMult, dt);
191 else if (bands == 3)
192 return new DirectColorModel
193 (cs, bits, masks[0], masks[1], masks[2], 0x0,
194 preMult, dt);
195 else
196 throw new IllegalArgumentException
197 ("Incompatible number of bands out for ColorModel");
198 }
199 throw new IllegalArgumentException
200 ("Unsupported SampleModel Type");
201 }
202 }
203 |
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