source: trunk/gcc/libjava/java/awt/image/Raster.java

Last change on this file was 2, checked in by bird, 22 years ago

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1/* Copyright (C) 2000, 2002 Free Software Foundation
2
3This file is part of GNU Classpath.
4
5GNU Classpath is free software; you can redistribute it and/or modify
6it under the terms of the GNU General Public License as published by
7the Free Software Foundation; either version 2, or (at your option)
8any later version.
9
10GNU Classpath is distributed in the hope that it will be useful, but
11WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with GNU Classpath; see the file COPYING. If not, write to the
17Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
1802111-1307 USA.
19
20Linking this library statically or dynamically with other modules is
21making a combined work based on this library. Thus, the terms and
22conditions of the GNU General Public License cover the whole
23combination.
24
25As a special exception, the copyright holders of this library give you
26permission to link this library with independent modules to produce an
27executable, regardless of the license terms of these independent
28modules, and to copy and distribute the resulting executable under
29terms of your choice, provided that you also meet, for each linked
30independent module, the terms and conditions of the license of that
31module. An independent module is a module which is not derived from
32or based on this library. If you modify this library, you may extend
33this exception to your version of the library, but you are not
34obligated to do so. If you do not wish to do so, delete this
35exception statement from your version. */
36
37package java.awt.image;
38
39import java.awt.*;
40
41/**
42 * @author Rolf W. Rasmussen <rolfwr@ii.uib.no>
43 */
44public class Raster
45{
46 protected SampleModel sampleModel;
47 protected DataBuffer dataBuffer;
48 protected int minX;
49 protected int minY;
50 protected int width;
51 protected int height;
52 protected int sampleModelTranslateX;
53 protected int sampleModelTranslateY;
54 protected int numBands;
55 protected int numDataElements;
56 protected Raster parent;
57
58 protected Raster(SampleModel sampleModel, Point origin)
59 {
60 this(sampleModel, sampleModel.createDataBuffer(), origin);
61 }
62
63 protected Raster(SampleModel sampleModel, DataBuffer dataBuffer,
64 Point origin)
65 {
66 this(sampleModel, dataBuffer,
67 new Rectangle(origin.x, origin.y,
68 sampleModel.getWidth(), sampleModel.getHeight()),
69 origin, null);
70 }
71
72 protected Raster(SampleModel sampleModel, DataBuffer dataBuffer,
73 Rectangle aRegion,
74 Point sampleModelTranslate, Raster parent)
75 {
76 this.sampleModel = sampleModel;
77 this.dataBuffer = dataBuffer;
78 this.minX = aRegion.x;
79 this.minY = aRegion.y;
80 this.width = aRegion.width;
81 this.height = aRegion.height;
82 this.sampleModelTranslateX = sampleModelTranslate.x;
83 this.sampleModelTranslateY = sampleModelTranslate.y;
84 this.numBands = sampleModel.getNumBands();
85 this.numDataElements = sampleModel.getNumDataElements();
86 this.parent = parent;
87 }
88
89 public static WritableRaster createInterleavedRaster(int dataType,
90 int w, int h,
91 int bands,
92 Point location)
93 {
94 int[] bandOffsets = new int[bands];
95 // TODO: Maybe not generate this every time.
96 for (int b=0; b<bands; b++) bandOffsets[b] = b;
97
98 int scanlineStride = bands*w;
99 return createInterleavedRaster(dataType, w, h, scanlineStride, bands,
100 bandOffsets, location);
101 }
102
103 public static WritableRaster createInterleavedRaster(int dataType,
104 int w, int h,
105 int scanlineStride,
106 int pixelStride,
107 int[] bandOffsets,
108 Point location)
109 {
110 SampleModel sm = new ComponentSampleModel(dataType,
111 w, h,
112 pixelStride,
113 scanlineStride,
114 bandOffsets);
115 return createWritableRaster(sm, location);
116 }
117
118 public static WritableRaster createBandedRaster(int dataType,
119 int w, int h, int bands,
120 Point location)
121 {
122 // FIXME: Implement;
123 throw new UnsupportedOperationException("not implemented yet");
124 }
125
126 public static WritableRaster createBandedRaster(int dataType,
127 int w, int h,
128 int scanlineStride,
129 int[] bankIndices,
130 int[] bandOffsets,
131 Point location)
132 {
133 // FIXME: Implement;
134 throw new UnsupportedOperationException("not implemented yet");
135 }
136
137 public static WritableRaster createPackedRaster(int dataType,
138 int w, int h,
139 int[] bandMasks,
140 Point location)
141 {
142 SampleModel sm = new SinglePixelPackedSampleModel(dataType,
143 w, h,
144 bandMasks);
145 return createWritableRaster(sm, location);
146 }
147
148 public static WritableRaster
149 createInterleavedRaster(DataBuffer dataBuffer, int w, int h,
150 int scanlineStride, int pixelStride,
151 int[] bandOffsets, Point location)
152 {
153 SampleModel sm = new ComponentSampleModel(dataBuffer.getDataType(),
154 w, h,
155 scanlineStride,
156 pixelStride,
157 bandOffsets);
158 return createWritableRaster(sm, dataBuffer, location);
159 }
160
161 public static
162 WritableRaster createBandedRaster(DataBuffer dataBuffer,
163 int w, int h,
164 int scanlineStride,
165 int[] bankIndices,
166 int[] bandOffsets,
167 Point location)
168 {
169 // FIXME: Implement;
170 throw new UnsupportedOperationException("not implemented yet");
171 }
172
173 public static WritableRaster
174 createPackedRaster(DataBuffer dataBuffer,
175 int w, int h,
176 int scanlineStride,
177 int[] bandMasks,
178 Point location) {
179 SampleModel sm =
180 new SinglePixelPackedSampleModel(dataBuffer.getDataType(),
181 w, h,
182 scanlineStride,
183 bandMasks);
184 return createWritableRaster(sm, dataBuffer, location);
185 }
186
187 public static Raster createRaster(SampleModel sm, DataBuffer db,
188 Point location)
189 {
190 return new Raster(sm, db, location);
191 }
192
193 public static WritableRaster createWritableRaster(SampleModel sm,
194 Point location)
195 {
196 return new WritableRaster(sm, location);
197 }
198
199 public static WritableRaster createWritableRaster(SampleModel sm,
200 DataBuffer db,
201 Point location)
202 {
203 return new WritableRaster(sm, db, location);
204 }
205
206 public Raster getParent()
207 {
208 return parent;
209 }
210
211 public final int getSampleModelTranslateX()
212 {
213 return sampleModelTranslateX;
214 }
215
216 public final int getSampleModelTranslateY()
217 {
218 return sampleModelTranslateY;
219 }
220
221 public WritableRaster createCompatibleWritableRaster()
222 {
223 return new WritableRaster(getSampleModel(), new Point(minX, minY));
224 }
225
226 public WritableRaster createCompatibleWritableRaster(int w, int h)
227 {
228 return createCompatibleWritableRaster(minX, minY, w, h);
229 }
230
231 public WritableRaster createCompatibleWritableRaster(Rectangle rect)
232 {
233 return createCompatibleWritableRaster(rect.x, rect.y,
234 rect.width, rect.height);
235 }
236
237 public WritableRaster createCompatibleWritableRaster(int x, int y,
238 int w, int h)
239 {
240 SampleModel sm = getSampleModel().createCompatibleSampleModel(w, h);
241 return new WritableRaster(sm, sm.createDataBuffer(),
242 new Point(x, y));
243 }
244
245 public Raster createTranslatedChild(int childMinX, int childMinY) {
246 int tcx = sampleModelTranslateX - minX + childMinX;
247 int tcy = sampleModelTranslateY - minY + childMinY;
248
249 return new Raster(sampleModel, dataBuffer,
250 new Rectangle(childMinX, childMinY,
251 width, height),
252 new Point(tcx, tcy),
253 this);
254 }
255
256 public Raster createChild(int parentX, int parentY, int width,
257 int height, int childMinX, int childMinY,
258 int[] bandList)
259 {
260 /* FIXME: Throw RasterFormatException if child bounds extends
261 beyond the bounds of this raster. */
262
263 SampleModel sm = (bandList == null) ?
264 sampleModel :
265 sampleModel.createSubsetSampleModel(bandList);
266
267 /*
268 data origin
269 /
270 +-------------------------
271 |\. __ parent trans
272 | \`.
273 | \ `. parent origin
274 | \ `. /
275 | /\ +-------- - -
276 |trans\ /<\-- deltaTrans
277 |child +-+-\---- - -
278 | /|`| \__ parent [x, y]
279 |child | |`. \
280 |origin| : `.\
281 | | / `\
282 | : / +
283 | child [x, y]
284
285 parent_xy - parent_trans = child_xy - child_trans
286
287 child_trans = parent_trans + child_xy - parent_xy
288 */
289
290 return new Raster(sm, dataBuffer,
291 new Rectangle(childMinX, childMinY,
292 width, height),
293 new Point(sampleModelTranslateX+childMinX-parentX,
294 sampleModelTranslateY+childMinY-parentY),
295 this);
296 }
297
298 public Rectangle getBounds()
299 {
300 return new Rectangle(minX, minY, width, height);
301 }
302
303 public final int getMinX()
304 {
305 return minX;
306 }
307
308 public final int getMinY()
309 {
310 return minY;
311 }
312
313 public final int getWidth()
314 {
315 return width;
316 }
317
318 public final int getHeight()
319 {
320 return height;
321 }
322
323 public final int getNumDataElements()
324 {
325 return numDataElements;
326 }
327
328 public final int getTransferType()
329 {
330 return sampleModel.getTransferType();
331 }
332
333 public DataBuffer getDataBuffer()
334 {
335 return dataBuffer;
336 }
337
338 public SampleModel getSampleModel()
339 {
340 return sampleModel;
341 }
342
343 public Object getDataElements(int x, int y, Object outData)
344 {
345 return sampleModel.getDataElements(x-sampleModelTranslateX,
346 y-sampleModelTranslateY,
347 outData, dataBuffer);
348 }
349
350 public Object getDataElements(int x, int y, int w, int h,
351 Object outData)
352 {
353 return sampleModel.getDataElements(x-sampleModelTranslateX,
354 y-sampleModelTranslateY,
355 w, h, outData, dataBuffer);
356 }
357
358 public int[] getPixel(int x, int y, int[] iArray)
359 {
360 return sampleModel.getPixel(x-sampleModelTranslateX,
361 y-sampleModelTranslateY,
362 iArray, dataBuffer);
363 }
364
365 public float[] getPixel(int x, int y, float[] fArray)
366 {
367 return sampleModel.getPixel(x-sampleModelTranslateX,
368 y-sampleModelTranslateY,
369 fArray, dataBuffer);
370 }
371
372 public double[] getPixel(int x, int y, double[] dArray)
373 {
374 return sampleModel.getPixel(x-sampleModelTranslateX,
375 y-sampleModelTranslateY,
376 dArray, dataBuffer);
377 }
378
379 public int[] getPixels(int x, int y, int w, int h, int[] iArray)
380 {
381 return sampleModel.getPixels(x-sampleModelTranslateX,
382 y-sampleModelTranslateY,
383 w, h, iArray, dataBuffer);
384 }
385
386 public float[] getPixels(int x, int y, int w, int h,
387 float[] fArray)
388 {
389 return sampleModel.getPixels(x-sampleModelTranslateX,
390 y-sampleModelTranslateY,
391 w, h, fArray, dataBuffer);
392 }
393
394 public double[] getPixels(int x, int y, int w, int h,
395 double[] dArray)
396 {
397 return sampleModel.getPixels(x-sampleModelTranslateX,
398 y-sampleModelTranslateY,
399 w, h, dArray, dataBuffer);
400 }
401
402 public int getSample(int x, int y, int b)
403 {
404 return sampleModel.getSample(x-sampleModelTranslateX,
405 y-sampleModelTranslateY,
406 b, dataBuffer);
407 }
408
409 public float getSampleFloat(int x, int y, int b)
410 {
411 return sampleModel.getSampleFloat(x-sampleModelTranslateX,
412 y-sampleModelTranslateY,
413 b, dataBuffer);
414 }
415
416 public double getSampleDouble(int x, int y, int b)
417 {
418 return sampleModel.getSampleDouble(x-sampleModelTranslateX,
419 y-sampleModelTranslateY,
420 b, dataBuffer);
421 }
422
423 public int[] getSamples(int x, int y, int w, int h, int b,
424 int[] iArray)
425 {
426 return sampleModel.getSamples(x-sampleModelTranslateX,
427 y-sampleModelTranslateY,
428 w, h, b, iArray, dataBuffer);
429 }
430
431 public float[] getSamples(int x, int y, int w, int h, int b,
432 float[] fArray)
433 {
434 return sampleModel.getSamples(x-sampleModelTranslateX,
435 y-sampleModelTranslateY,
436 w, h, b, fArray, dataBuffer);
437 }
438
439 public double[] getSamples(int x, int y, int w, int h, int b,
440 double[] dArray)
441 {
442 return sampleModel.getSamples(x-sampleModelTranslateX,
443 y-sampleModelTranslateY,
444 w, h, b, dArray, dataBuffer);
445 }
446}
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