source: trunk/gcc/libjava/java/awt/RenderingHints.java

Last change on this file was 1392, checked in by bird, 21 years ago

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1/* RenderingHints.java --
2 Copyright (C) 2000, 2001, 2002 Free Software Foundation
3
4This file is part of GNU Classpath.
5
6GNU Classpath is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2, or (at your option)
9any later version.
10
11GNU Classpath is distributed in the hope that it will be useful, but
12WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GNU Classpath; see the file COPYING. If not, write to the
18Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
1902111-1307 USA.
20
21Linking this library statically or dynamically with other modules is
22making a combined work based on this library. Thus, the terms and
23conditions of the GNU General Public License cover the whole
24combination.
25
26As a special exception, the copyright holders of this library give you
27permission to link this library with independent modules to produce an
28executable, regardless of the license terms of these independent
29modules, and to copy and distribute the resulting executable under
30terms of your choice, provided that you also meet, for each linked
31independent module, the terms and conditions of the license of that
32module. An independent module is a module which is not derived from
33or based on this library. If you modify this library, you may extend
34this exception to your version of the library, but you are not
35obligated to do so. If you do not wish to do so, delete this
36exception statement from your version. */
37
38
39package java.awt;
40
41import java.util.Collection;
42import java.util.Collections;
43import java.util.HashMap;
44import java.util.Map;
45import java.util.Set;
46
47/**
48 * NEEDS DOCUMENTATION
49 *
50 * @author Rolf W. Rasmussen <rolfwr@ii.uib.no>
51 * @author Eric Blake <ebb9@email.byu.edu>
52 */
53public class RenderingHints implements Map, Cloneable
54{
55 public abstract static class Key
56 {
57 private final int key;
58
59 protected Key(int privateKey)
60 {
61 key = privateKey;
62 }
63
64 public abstract boolean isCompatibleValue(Object value);
65
66 protected final int intKey()
67 {
68 return key;
69 }
70
71 public final int hashCode()
72 {
73 return System.identityHashCode(this);
74 }
75
76 public final boolean equals(Object other)
77 {
78 return this == other;
79 }
80 } // class Key
81
82 private static final class KeyImpl extends Key
83 {
84 final String description;
85 final Object v1;
86 final Object v2;
87 final Object v3;
88
89 KeyImpl(int privateKey, String description,
90 Object v1, Object v2, Object v3)
91 {
92 super(privateKey);
93 this.description = description;
94 this.v1 = v1;
95 this.v2 = v2;
96 this.v3 = v3;
97 }
98
99 public boolean isCompatibleValue(Object value)
100 {
101 return value == v1 || value == v2 || value == v3;
102 }
103
104 public String toString()
105 {
106 return description;
107 }
108 } // class KeyImpl
109
110 private HashMap hintMap = new HashMap();
111
112 public static final Key KEY_ANTIALIASING;
113
114 public static final Object VALUE_ANTIALIAS_ON
115 = "Antialiased rendering mode";
116
117 public static final Object VALUE_ANTIALIAS_OFF
118 = "Nonantialiased rendering mode";
119
120 public static final Object VALUE_ANTIALIAS_DEFAULT
121 = "Default antialiasing rendering mode";
122
123 public static final Key KEY_RENDERING;
124
125 public static final Object VALUE_RENDER_SPEED
126 = "Fastest rendering methods";
127
128 public static final Object VALUE_RENDER_QUALITY
129 = "Highest quality rendering methods";
130
131 public static final Object VALUE_RENDER_DEFAULT
132 = "Default rendering methods";
133
134 public static final Key KEY_DITHERING;
135
136 public static final Object VALUE_DITHER_DISABLE
137 = "Nondithered rendering mode";
138
139 public static final Object VALUE_DITHER_ENABLE
140 = "Dithered rendering mode";
141
142 public static final Object VALUE_DITHER_DEFAULT
143 = "Default dithering mode";
144
145 public static final Key KEY_TEXT_ANTIALIASING;
146
147 public static final Object VALUE_TEXT_ANTIALIAS_ON
148 = "Antialiased text mode";
149
150 public static final Object VALUE_TEXT_ANTIALIAS_OFF
151 = "Nonantialiased text mode";
152
153 public static final Object VALUE_TEXT_ANTIALIAS_DEFAULT
154 = "Default antialiasing text mode";
155
156 public static final Key KEY_FRACTIONALMETRICS;
157
158 public static final Object VALUE_FRACTIONALMETRICS_OFF
159 = "Integer text metrics mode";
160
161 public static final Object VALUE_FRACTIONALMETRICS_ON
162 = "Fractional text metrics mode";
163
164 public static final Object VALUE_FRACTIONALMETRICS_DEFAULT
165 = "Default fractional text metrics mode";
166
167 public static final Key KEY_INTERPOLATION;
168
169 public static final Object VALUE_INTERPOLATION_NEAREST_NEIGHBOR
170 = "Nearest Neighbor image interpolation mode";
171
172 public static final Object VALUE_INTERPOLATION_BILINEAR
173 = "Bilinear image interpolation mode";
174
175 public static final Object VALUE_INTERPOLATION_BICUBIC
176 = "Bicubic image interpolation mode";
177
178 public static final Key KEY_ALPHA_INTERPOLATION;
179
180 public static final Object VALUE_ALPHA_INTERPOLATION_SPEED
181 = "Fastest alpha blending methods";
182
183 public static final Object VALUE_ALPHA_INTERPOLATION_QUALITY
184 = "Highest quality alpha blending methods";
185
186 public static final Object VALUE_ALPHA_INTERPOLATION_DEFAULT
187 = "Default alpha blending methods";
188
189 public static final Key KEY_COLOR_RENDERING;
190
191 public static final Object VALUE_COLOR_RENDER_SPEED
192 = "Fastest color rendering mode";
193
194 public static final Object VALUE_COLOR_RENDER_QUALITY
195 = "Highest quality color rendering mode";
196
197 public static final Object VALUE_COLOR_RENDER_DEFAULT
198 = "Default color rendering mode";
199
200 public static final Key KEY_STROKE_CONTROL;
201
202 public static final Object VALUE_STROKE_DEFAULT
203 = "Default stroke normalization";
204
205 public static final Object VALUE_STROKE_NORMALIZE
206 = "Normalize strokes for consistent rendering";
207
208 public static final Object VALUE_STROKE_PURE
209 = "Pure stroke conversion for accurate paths";
210
211 static
212 {
213 KEY_ANTIALIASING = new KeyImpl(1, "Global antialiasing enable key",
214 VALUE_ANTIALIAS_ON,
215 VALUE_ANTIALIAS_OFF,
216 VALUE_ANTIALIAS_DEFAULT);
217 KEY_RENDERING = new KeyImpl(2, "Global rendering quality key",
218 VALUE_RENDER_SPEED,
219 VALUE_RENDER_QUALITY,
220 VALUE_RENDER_DEFAULT);
221 KEY_DITHERING = new KeyImpl(3, "Dithering quality key",
222 VALUE_DITHER_DISABLE,
223 VALUE_DITHER_ENABLE,
224 VALUE_DITHER_DEFAULT);
225 KEY_TEXT_ANTIALIASING
226 = new KeyImpl(4, "Text-specific antialiasing enable key",
227 VALUE_TEXT_ANTIALIAS_ON,
228 VALUE_TEXT_ANTIALIAS_OFF,
229 VALUE_TEXT_ANTIALIAS_DEFAULT);
230 KEY_FRACTIONALMETRICS = new KeyImpl(5, "Fractional metrics enable key",
231 VALUE_FRACTIONALMETRICS_OFF,
232 VALUE_FRACTIONALMETRICS_ON,
233 VALUE_FRACTIONALMETRICS_DEFAULT);
234 KEY_INTERPOLATION = new KeyImpl(6, "Image interpolation method key",
235 VALUE_INTERPOLATION_NEAREST_NEIGHBOR,
236 VALUE_INTERPOLATION_BILINEAR,
237 VALUE_INTERPOLATION_BICUBIC);
238 KEY_ALPHA_INTERPOLATION
239 = new KeyImpl(7, "Alpha blending interpolation method key",
240 VALUE_ALPHA_INTERPOLATION_SPEED,
241 VALUE_ALPHA_INTERPOLATION_QUALITY,
242 VALUE_ALPHA_INTERPOLATION_DEFAULT);
243 KEY_COLOR_RENDERING = new KeyImpl(8, "Color rendering quality key",
244 VALUE_COLOR_RENDER_SPEED,
245 VALUE_COLOR_RENDER_QUALITY,
246 VALUE_COLOR_RENDER_DEFAULT);
247 KEY_STROKE_CONTROL = new KeyImpl(9, "Stroke normalization control key",
248 VALUE_STROKE_DEFAULT,
249 VALUE_STROKE_NORMALIZE,
250 VALUE_STROKE_PURE);
251 }
252
253 public RenderingHints(Map init)
254 {
255 putAll(init);
256 }
257
258 public RenderingHints(Key key, Object value)
259 {
260 put(key, value);
261 }
262
263 public int size()
264 {
265 return hintMap.size();
266 }
267
268 public boolean isEmpty()
269 {
270 return hintMap.isEmpty();
271 }
272
273 public boolean containsKey(Object key)
274 {
275 if (key == null)
276 throw new NullPointerException();
277 return hintMap.containsKey((Key) key);
278 }
279
280 public boolean containsValue(Object value)
281 {
282 return hintMap.containsValue(value);
283 }
284
285 public Object get(Object key)
286 {
287 return hintMap.get((Key) key);
288 }
289
290 public Object put(Object key, Object value)
291 {
292 if (key == null || value == null)
293 throw new NullPointerException();
294 if (! ((Key) key).isCompatibleValue(value))
295 throw new IllegalArgumentException();
296 return hintMap.put(key, value);
297 }
298
299 public void add(RenderingHints hints)
300 {
301 hintMap.putAll(hints);
302 }
303
304 public void clear()
305 {
306 hintMap.clear();
307 }
308
309 public Object remove(Object key)
310 {
311 return remove((Key) key);
312 }
313
314 public void putAll(Map m)
315 {
316 hintMap.putAll(m);
317 }
318
319 public Set keySet()
320 {
321 return hintMap.keySet();
322 }
323
324 public Collection values()
325 {
326 return hintMap.values();
327 }
328
329 public Set entrySet()
330 {
331 return Collections.unmodifiableSet(hintMap.entrySet());
332 }
333
334 public boolean equals(Object o)
335 {
336 return hintMap.equals(o);
337 }
338
339 public int hashCode()
340 {
341 return hintMap.hashCode();
342 }
343
344 public Object clone()
345 {
346 try
347 {
348 RenderingHints copy = (RenderingHints) super.clone();
349 copy.hintMap = (HashMap) hintMap.clone();
350 return copy;
351 }
352 catch (CloneNotSupportedException e)
353 {
354 throw (Error) new InternalError().initCause(e); // Impossible
355 }
356 }
357
358 public String toString()
359 {
360 return hintMap.toString();
361 }
362} // class RenderingHints
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