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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #ifndef INCLUDED_BASEBMP_ACCESSORADAPTERS_HXX
21 : #define INCLUDED_BASEBMP_ACCESSORADAPTERS_HXX
22 :
23 : #include <vigra/numerictraits.hxx>
24 :
25 : namespace basebmp
26 : {
27 :
28 : /** Interpose given accessor's set and get methods with two unary
29 : functors.
30 :
31 : @tpl WrappedAccessor
32 : Wrapped type must provide the usual get and set accessor methods,
33 : with the usual signatures (see StandardAccessor for a conforming
34 : example).
35 :
36 : @tpl GetterFunctor
37 : An Adaptable Unary Function (i.e. providing result_type and
38 : argument_type typedefs)
39 :
40 : @tpl SetterFunctor
41 : An Adaptable Unary Function (i.e. providing result_type and
42 : argument_type typedefs)
43 : */
44 : template< class WrappedAccessor,
45 : typename GetterFunctor,
46 : typename SetterFunctor > class UnaryFunctionAccessorAdapter
47 : {
48 : public:
49 : typedef typename GetterFunctor::result_type value_type;
50 : typedef typename SetterFunctor::argument_type argument_type;
51 :
52 : #ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
53 : // making all members public, if no member template friends
54 : private:
55 : template<class A, typename G, typename S> friend class UnaryFunctionAccessorAdapter;
56 : #endif
57 :
58 : // we don't derive from wrapped type, to avoid ambiguities
59 : // regarding templatized getter/setter methods.
60 : WrappedAccessor maAccessor;
61 : GetterFunctor maGetterFunctor;
62 : SetterFunctor maSetterFunctor;
63 :
64 : public:
65 0 : UnaryFunctionAccessorAdapter() :
66 : maAccessor(),
67 : maGetterFunctor(),
68 : maSetterFunctor()
69 0 : {}
70 :
71 : template< class A > explicit
72 0 : UnaryFunctionAccessorAdapter( UnaryFunctionAccessorAdapter< A,
73 : GetterFunctor,
74 : SetterFunctor > const& rSrc ) :
75 : maAccessor( rSrc.maAccessor ),
76 : maGetterFunctor( rSrc.maGetterFunctor ),
77 0 : maSetterFunctor( rSrc.maSetterFunctor )
78 0 : {}
79 :
80 : template< class T > explicit UnaryFunctionAccessorAdapter( T const& accessor ) :
81 : maAccessor( accessor ),
82 : maGetterFunctor(),
83 : maSetterFunctor()
84 : {}
85 :
86 : template< class T > UnaryFunctionAccessorAdapter( T accessor,
87 : GetterFunctor getterFunctor,
88 : SetterFunctor setterFunctor) :
89 : maAccessor( accessor ),
90 : maGetterFunctor( getterFunctor ),
91 : maSetterFunctor( setterFunctor )
92 : {}
93 :
94 :
95 :
96 : WrappedAccessor const& getWrappedAccessor() const { return maAccessor; }
97 : WrappedAccessor& getWrappedAccessor() { return maAccessor; }
98 :
99 :
100 :
101 : value_type getter(typename GetterFunctor::argument_type v) const
102 : {
103 : return maGetterFunctor(v);
104 : }
105 0 : typename SetterFunctor::result_type setter(argument_type v) const
106 : {
107 0 : return maSetterFunctor(v);
108 : }
109 :
110 :
111 :
112 : template< class Iterator >
113 0 : value_type operator()(Iterator const& i) const
114 : {
115 0 : return maGetterFunctor( maAccessor(i) );
116 : }
117 :
118 : template< class Iterator, class Difference >
119 : value_type operator()(Iterator const& i, Difference const& diff) const
120 : {
121 : return maGetterFunctor( maAccessor(i,diff) );
122 : }
123 :
124 :
125 :
126 : template< typename V, class Iterator >
127 0 : void set(V const& value, Iterator const& i) const
128 : {
129 0 : maAccessor.set(
130 : maSetterFunctor(
131 0 : vigra::detail::RequiresExplicitCast<argument_type>::cast(value) ),
132 : i );
133 0 : }
134 :
135 : template< typename V, class Iterator, class Difference >
136 : void set(V const& value, Iterator const& i, Difference const& diff) const
137 : {
138 : maAccessor.set(
139 : maSetterFunctor(
140 : vigra::detail::RequiresExplicitCast<argument_type>::cast(value) ),
141 : i,
142 : diff );
143 : }
144 :
145 : };
146 :
147 :
148 :
149 : /** Interpose given accessor's set methods with a binary function,
150 : taking both old and new value.
151 :
152 : The wrappee's getter methods kept as-is.
153 :
154 : @tpl WrappedAccessor
155 : Wrapped type must provide the usual get and set accessor methods,
156 : with the usual signatures (see StandardAccessor for a conforming
157 : example). Furthermore, must provide a nested typedef value_type.
158 :
159 : @tpl SetterFunctor
160 : An adaptable binary function (i.e. providing nested typedefs for
161 : result_type and first and second argument type)
162 : */
163 : template< class WrappedAccessor,
164 : typename SetterFunctor > class BinarySetterFunctionAccessorAdapter
165 : {
166 : public:
167 : typedef typename WrappedAccessor::value_type value_type;
168 : typedef typename SetterFunctor::second_argument_type argument_type;
169 :
170 : #ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
171 : // making all members public, if no member template friends
172 : private:
173 : template<class A, typename S> friend class BinarySetterFunctionAccessorAdapter;
174 : #endif
175 :
176 : WrappedAccessor maAccessor;
177 : SetterFunctor maFunctor;
178 :
179 : public:
180 : BinarySetterFunctionAccessorAdapter() :
181 : maAccessor(),
182 : maFunctor()
183 : {}
184 :
185 : template< class A > explicit
186 : BinarySetterFunctionAccessorAdapter(
187 : BinarySetterFunctionAccessorAdapter< A,
188 : SetterFunctor > const& rSrc ) :
189 : maAccessor( rSrc.maAccessor ),
190 : maFunctor( rSrc.maFunctor )
191 : {}
192 :
193 0 : template< class T > explicit BinarySetterFunctionAccessorAdapter( T const& accessor ) :
194 : maAccessor( accessor ),
195 0 : maFunctor()
196 0 : {}
197 :
198 : template< class T > BinarySetterFunctionAccessorAdapter( T accessor,
199 : SetterFunctor functor ) :
200 : maAccessor( accessor ),
201 : maFunctor( functor )
202 : {}
203 :
204 :
205 :
206 : WrappedAccessor const& getWrappedAccessor() const { return maAccessor; }
207 : WrappedAccessor& getWrappedAccessor() { return maAccessor; }
208 :
209 :
210 :
211 : typename SetterFunctor::result_type setter(
212 : typename SetterFunctor::first_argument_type v1,
213 : argument_type v2 ) const
214 : {
215 : return maSetterFunctor(v1,v2);
216 : }
217 :
218 :
219 :
220 : template< class Iterator >
221 0 : value_type operator()(Iterator const& i) const
222 : {
223 0 : return maAccessor(i);
224 : }
225 :
226 : template< class Iterator, class Difference >
227 : value_type operator()(Iterator const& i, Difference const& diff) const
228 : {
229 : return maAccessor(i,diff);
230 : }
231 :
232 :
233 :
234 : template< typename V, class Iterator >
235 0 : void set(V const& value, Iterator const& i) const
236 : {
237 0 : maAccessor.set(
238 : maFunctor(maAccessor(i),
239 0 : vigra::detail::RequiresExplicitCast<argument_type>::cast(value)),
240 : i );
241 0 : }
242 :
243 : template< typename V, class Iterator, class Difference >
244 : void set(V const& value, Iterator const& i, Difference const& diff) const
245 : {
246 : maAccessor.set(
247 : maFunctor(maAccessor(i,diff),
248 : vigra::detail::RequiresExplicitCast<argument_type>::cast(value)),
249 : i,
250 : diff );
251 : }
252 :
253 : };
254 :
255 :
256 :
257 : /** Write through a CompositeIterator's first wrapped iterator, by
258 : piping the first wrapped iterator value, the second iterator
259 : value, and the specified new value through a ternary function.
260 :
261 : Passed iterator must fulfill the CompositeIterator concept. Note
262 : that the getter/setter methods are not templatized regarding the
263 : iterator type, to make the mask calculation optimization below
264 : safe (see the maskedAccessor template metafunction below)
265 :
266 : @tpl WrappedAccessor1
267 : Wrapped type must provide the usual get and set accessor methods,
268 : with the usual signatures (see StandardAccessor for a conforming
269 : example). Furthermore, the type must provide a nested typedef
270 : value_type (the selection of WrappedAccessor1 as the provider for
271 : that typedef is rather arbitrary. Could have been
272 : WrappedAccessor2, too. So sue me)
273 :
274 : @tpl Functor
275 : An adaptable ternary function (i.e. providing nested typedefs for
276 : result_type and first, second and third argument type)
277 : */
278 : template< class WrappedAccessor1,
279 : class WrappedAccessor2,
280 : typename Functor > class TernarySetterFunctionAccessorAdapter
281 : {
282 : public:
283 : typedef typename WrappedAccessor1::value_type value_type;
284 : typedef typename Functor::third_argument_type argument_type;
285 :
286 : #ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
287 : // making all members public, if no member template friends
288 : private:
289 : template<class A1, class A2, typename F> friend class TernarySetterFunctionAccessorAdapter;
290 : #endif
291 :
292 : WrappedAccessor1 ma1stAccessor;
293 : WrappedAccessor2 ma2ndAccessor;
294 : Functor maFunctor;
295 :
296 : public:
297 : TernarySetterFunctionAccessorAdapter() :
298 : ma1stAccessor(),
299 : ma2ndAccessor(),
300 : maFunctor()
301 : {}
302 :
303 0 : template< class T > explicit TernarySetterFunctionAccessorAdapter( T const& accessor ) :
304 : ma1stAccessor( accessor ),
305 : ma2ndAccessor(),
306 0 : maFunctor()
307 0 : {}
308 :
309 : template< class A1, class A2 > explicit
310 : TernarySetterFunctionAccessorAdapter(
311 : TernarySetterFunctionAccessorAdapter< A1,
312 : A2,
313 : Functor > const& rSrc ) :
314 : ma1stAccessor( rSrc.ma1stAccessor ),
315 : ma2ndAccessor( rSrc.ma2ndAccessor ),
316 : maFunctor( rSrc.maFunctor )
317 : {}
318 :
319 : template< class T1, class T2 >
320 : TernarySetterFunctionAccessorAdapter( T1 accessor1,
321 : T2 accessor2 ) :
322 : ma1stAccessor( accessor1 ),
323 : ma2ndAccessor( accessor2 ),
324 : maFunctor()
325 : {}
326 :
327 : template< class T1, class T2 >
328 : TernarySetterFunctionAccessorAdapter( T1 accessor1,
329 : T2 accessor2,
330 : Functor func ) :
331 : ma1stAccessor( accessor1 ),
332 : ma2ndAccessor( accessor2 ),
333 : maFunctor( func )
334 : {}
335 :
336 :
337 :
338 : WrappedAccessor1 const& get1stWrappedAccessor() const { return ma1stAccessor; }
339 0 : WrappedAccessor1& get1stWrappedAccessor() { return ma1stAccessor; }
340 :
341 : WrappedAccessor2 const& get2ndWrappedAccessor() const { return ma2ndAccessor; }
342 : WrappedAccessor2& get2ndWrappedAccessor() { return ma2ndAccessor; }
343 :
344 :
345 :
346 : typename Functor::result_type setter(
347 : typename Functor::first_argument_type v1,
348 : typename Functor::second_argument_type v2,
349 : argument_type v3 ) const
350 : {
351 : return maSetterFunctor(v1,v2,v3);
352 : }
353 :
354 :
355 :
356 : template< class Iterator >
357 0 : value_type operator()(Iterator const& i) const
358 : {
359 0 : return ma1stAccessor(i.first());
360 : }
361 :
362 : template< class Iterator, class Difference >
363 : value_type operator()(Iterator const& i, Difference const& diff) const
364 : {
365 : return ma1stAccessor(i.second(),diff);
366 : }
367 :
368 :
369 :
370 : template< typename V, class Iterator >
371 0 : void set(V const& value, Iterator const& i) const
372 : {
373 0 : ma1stAccessor.set(
374 : maFunctor(ma1stAccessor(i.first()),
375 : ma2ndAccessor(i.second()),
376 0 : vigra::detail::RequiresExplicitCast<argument_type>::cast(value)),
377 : i.first() );
378 0 : }
379 :
380 : template< typename V, class Iterator, class Difference >
381 : void set(V const& value, Iterator const& i, Difference const& diff) const
382 : {
383 : ma1stAccessor.set(
384 : maFunctor(ma1stAccessor(i.first(), diff),
385 : ma2ndAccessor(i.second(),diff),
386 : vigra::detail::RequiresExplicitCast<argument_type>::cast(value)),
387 : i.first(),
388 : diff );
389 : }
390 :
391 : };
392 :
393 :
394 :
395 : /** Access two distinct images simultaneously
396 :
397 : Passed iterator must fulfill the CompositeIterator concept
398 : (i.e. wrap the two image's iterators into one
399 : CompositeIterator). The getter and setter methods expect and
400 : return a pair of values, with types equal to the two accessors
401 : value types
402 :
403 : @tpl WrappedAccessor1
404 : Wrapped type must provide the usual get and set accessor methods,
405 : with the usual signatures (see StandardAccessor for a conforming
406 : example). Furthermore, the type must provide a nested typedef
407 : value_type.
408 :
409 : @tpl WrappedAccessor2
410 : Wrapped type must provide the usual get and set accessor methods,
411 : with the usual signatures (see StandardAccessor for a conforming
412 : example). Furthermore, the type must provide a nested typedef
413 : value_type.
414 : */
415 : template< class WrappedAccessor1,
416 0 : class WrappedAccessor2 > class JoinImageAccessorAdapter
417 : {
418 : public:
419 : // TODO(F3): Need numeric traits and a few free functions to
420 : // actually calculate with a pair (semantic: apply every operation
421 : // individually to the contained types)
422 : typedef std::pair<typename WrappedAccessor1::value_type,
423 : typename WrappedAccessor2::value_type> value_type;
424 :
425 : #ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
426 : // making all members public, if no member template friends
427 : private:
428 : template<class A1, class A2> friend class JoinImageAccessorAdapter;
429 : #endif
430 :
431 : WrappedAccessor1 ma1stAccessor;
432 : WrappedAccessor2 ma2ndAccessor;
433 :
434 : public:
435 : JoinImageAccessorAdapter() :
436 : ma1stAccessor(),
437 : ma2ndAccessor()
438 : {}
439 :
440 : template< class T > explicit JoinImageAccessorAdapter( T const& accessor ) :
441 : ma1stAccessor( accessor ),
442 : ma2ndAccessor()
443 : {}
444 :
445 : template< class A1, class A2 > explicit
446 : JoinImageAccessorAdapter(
447 : JoinImageAccessorAdapter< A1,
448 : A2 > const& rSrc ) :
449 : ma1stAccessor( rSrc.ma1stAccessor ),
450 : ma2ndAccessor( rSrc.ma2ndAccessor )
451 : {}
452 :
453 : template< class T1, class T2 >
454 0 : JoinImageAccessorAdapter( T1 accessor1,
455 : T2 accessor2 ) :
456 : ma1stAccessor( accessor1 ),
457 0 : ma2ndAccessor( accessor2 )
458 0 : {}
459 :
460 :
461 :
462 : WrappedAccessor1 const& get1stWrappedAccessor() const { return ma1stAccessor; }
463 : WrappedAccessor1& get1stWrappedAccessor() { return ma1stAccessor; }
464 :
465 : WrappedAccessor2 const& get2ndWrappedAccessor() const { return ma2ndAccessor; }
466 : WrappedAccessor2& get2ndWrappedAccessor() { return ma2ndAccessor; }
467 :
468 :
469 :
470 : template< class Iterator >
471 0 : value_type operator()(Iterator const& i) const
472 : {
473 : return std::make_pair(ma1stAccessor(i.first()),
474 0 : ma2ndAccessor(i.second()));
475 : }
476 :
477 : template< class Iterator, class Difference >
478 : value_type operator()(Iterator const& i, Difference const& diff) const
479 : {
480 : return std::make_pair(ma1stAccessor(i.first(),diff),
481 : ma2ndAccessor(i.second(),diff));
482 : }
483 :
484 :
485 :
486 : template< typename V, class Iterator >
487 : void set(V const& value, Iterator const& i) const
488 : {
489 : ma1stAccessor.set(
490 : vigra::detail::RequiresExplicitCast<typename WrappedAccessor1::value_type>::cast(
491 : value.first),
492 : i.first() );
493 : ma2ndAccessor.set(
494 : vigra::detail::RequiresExplicitCast<typename WrappedAccessor2::value_type>::cast(
495 : value.second),
496 : i.second() );
497 : }
498 :
499 : template< typename V, class Iterator, class Difference >
500 : void set(V const& value, Iterator const& i, Difference const& diff) const
501 : {
502 : ma1stAccessor.set(
503 : vigra::detail::RequiresExplicitCast<typename WrappedAccessor1::value_type>::cast(
504 : value.first),
505 : i.first(),
506 : diff );
507 : ma2ndAccessor.set(
508 : vigra::detail::RequiresExplicitCast<typename WrappedAccessor2::value_type>::cast(
509 : value.second),
510 : i.second(),
511 : diff );
512 : }
513 :
514 : };
515 :
516 : } // namespace basebmp
517 :
518 : #endif /* INCLUDED_BASEBMP_ACCESSORADAPTERS_HXX */
519 :
520 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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