MagickWand  7.1.0
Convert, Edit, Or Compose Bitmap Images
magick-wand.c
1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 % %
4 % %
5 % %
6 % M M AAA GGGG IIIII CCCC K K %
7 % MM MM A A G I C K K %
8 % M M M AAAAA G GGG I C KKK %
9 % M M A A G G I C K K %
10 % M M A A GGGG IIIII CCCC K K %
11 % %
12 % W W AAA N N DDDD %
13 % W W A A NN N D D %
14 % W W W AAAAA N N N D D %
15 % WW WW A A N NN D D %
16 % W W A A N N DDDD %
17 % %
18 % %
19 % MagickWand Wand Methods %
20 % %
21 % Software Design %
22 % Cristy %
23 % August 2003 %
24 % %
25 % %
26 % Copyright @ 2003 ImageMagick Studio LLC, a non-profit organization %
27 % dedicated to making software imaging solutions freely available. %
28 % %
29 % You may not use this file except in compliance with the License. You may %
30 % obtain a copy of the License at %
31 % %
32 % https://imagemagick.org/script/license.php %
33 % %
34 % Unless required by applicable law or agreed to in writing, software %
35 % distributed under the License is distributed on an "AS IS" BASIS, %
36 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
37 % See the License for the specific language governing permissions and %
38 % limitations under the License. %
39 % %
40 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
41 %
42 %
43 %
44 */
45 ␌
46 /*
47  Include declarations.
48 */
49 #include "MagickWand/studio.h"
50 #include "MagickWand/MagickWand.h"
51 #include "MagickWand/magick-wand-private.h"
52 #include "MagickWand/wand.h"
53 ␌
54 /*
55 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
56 % %
57 % %
58 % %
59 % C l e a r M a g i c k W a n d %
60 % %
61 % %
62 % %
63 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
64 %
65 % ClearMagickWand() clears resources associated with the wand, leaving the
66 % wand blank, and ready to be used for a new set of images.
67 %
68 % The format of the ClearMagickWand method is:
69 %
70 % void ClearMagickWand(MagickWand *wand)
71 %
72 % A description of each parameter follows:
73 %
74 % o wand: the magick wand.
75 %
76 */
77 WandExport void ClearMagickWand(MagickWand *wand)
78 {
79  assert(wand != (MagickWand *) NULL);
80  assert(wand->signature == MagickWandSignature);
81  if (wand->debug != MagickFalse)
82  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
83  wand->image_info=DestroyImageInfo(wand->image_info);
84  wand->images=DestroyImageList(wand->images);
85  wand->image_info=AcquireImageInfo();
86  wand->insert_before=MagickFalse;
87  wand->image_pending=MagickFalse;
88  ClearMagickException(wand->exception);
89  wand->debug=IsEventLogging();
90 }
91 ␌
92 /*
93 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
94 % %
95 % %
96 % %
97 % C l o n e M a g i c k W a n d %
98 % %
99 % %
100 % %
101 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
102 %
103 % CloneMagickWand() makes an exact copy of the specified wand.
104 %
105 % The format of the CloneMagickWand method is:
106 %
107 % MagickWand *CloneMagickWand(const MagickWand *wand)
108 %
109 % A description of each parameter follows:
110 %
111 % o wand: the magick wand.
112 %
113 */
114 WandExport MagickWand *CloneMagickWand(const MagickWand *wand)
115 {
116  MagickWand
117  *clone_wand;
118 
119  assert(wand != (MagickWand *) NULL);
120  assert(wand->signature == MagickWandSignature);
121  if (wand->debug != MagickFalse)
122  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
123  clone_wand=(MagickWand *) AcquireCriticalMemory(sizeof(*clone_wand));
124  (void) memset(clone_wand,0,sizeof(*clone_wand));
125  clone_wand->id=AcquireWandId();
126  (void) FormatLocaleString(clone_wand->name,MagickPathExtent,"%s-%.20g",
127  MagickWandId,(double) clone_wand->id);
128  clone_wand->exception=AcquireExceptionInfo();
129  InheritException(clone_wand->exception,wand->exception);
130  clone_wand->image_info=CloneImageInfo(wand->image_info);
131  clone_wand->images=CloneImageList(wand->images,clone_wand->exception);
132  clone_wand->insert_before=MagickFalse;
133  clone_wand->image_pending=MagickFalse;
134  clone_wand->debug=IsEventLogging();
135  if (clone_wand->debug != MagickFalse)
136  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",clone_wand->name);
137  clone_wand->signature=MagickWandSignature;
138  return(clone_wand);
139 }
140 ␌
141 /*
142 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
143 % %
144 % %
145 % %
146 % D e s t r o y M a g i c k W a n d %
147 % %
148 % %
149 % %
150 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
151 %
152 % DestroyMagickWand() deallocates memory associated with an MagickWand.
153 %
154 % The format of the DestroyMagickWand method is:
155 %
156 % MagickWand *DestroyMagickWand(MagickWand *wand)
157 %
158 % A description of each parameter follows:
159 %
160 % o wand: the magick wand.
161 %
162 */
163 WandExport MagickWand *DestroyMagickWand(MagickWand *wand)
164 {
165  assert(wand != (MagickWand *) NULL);
166  assert(wand->signature == MagickWandSignature);
167  if (wand->debug != MagickFalse)
168  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
169  wand->images=DestroyImageList(wand->images);
170  if (wand->image_info != (ImageInfo *) NULL )
171  wand->image_info=DestroyImageInfo(wand->image_info);
172  if (wand->exception != (ExceptionInfo *) NULL )
173  wand->exception=DestroyExceptionInfo(wand->exception);
174  RelinquishWandId(wand->id);
175  wand->signature=(~MagickWandSignature);
176  wand=(MagickWand *) RelinquishMagickMemory(wand);
177  return(wand);
178 }
179 ␌
180 /*
181 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
182 % %
183 % %
184 % %
185 % I s M a g i c k W a n d %
186 % %
187 % %
188 % %
189 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
190 %
191 % IsMagickWand() returns MagickTrue if the wand is verified as a magick wand.
192 %
193 % The format of the IsMagickWand method is:
194 %
195 % MagickBooleanType IsMagickWand(const MagickWand *wand)
196 %
197 % A description of each parameter follows:
198 %
199 % o wand: the magick wand.
200 %
201 */
202 WandExport MagickBooleanType IsMagickWand(const MagickWand *wand)
203 {
204  if (wand == (const MagickWand *) NULL)
205  return(MagickFalse);
206  if (wand->signature != MagickWandSignature)
207  return(MagickFalse);
208  if (LocaleNCompare(wand->name,MagickWandId,strlen(MagickWandId)) != 0)
209  return(MagickFalse);
210  return(MagickTrue);
211 }
212 ␌
213 /*
214 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
215 % %
216 % %
217 % %
218 % M a g i c k C l e a r E x c e p t i o n %
219 % %
220 % %
221 % %
222 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
223 %
224 % MagickClearException() clears any exceptions associated with the wand.
225 %
226 % The format of the MagickClearException method is:
227 %
228 % MagickBooleanType MagickClearException(MagickWand *wand)
229 %
230 % A description of each parameter follows:
231 %
232 % o wand: the magick wand.
233 %
234 */
235 WandExport MagickBooleanType MagickClearException(MagickWand *wand)
236 {
237  assert(wand != (MagickWand *) NULL);
238  assert(wand->signature == MagickWandSignature);
239  if (wand->debug != MagickFalse)
240  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
241  ClearMagickException(wand->exception);
242  return(MagickTrue);
243 }
244 ␌
245 /*
246 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
247 % %
248 % %
249 % %
250 % M a g i c k G e t E x c e p t i o n %
251 % %
252 % %
253 % %
254 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
255 %
256 % MagickGetException() returns the severity, reason, and description of any
257 % error that occurs when using other methods in this API.
258 %
259 % The format of the MagickGetException method is:
260 %
261 % char *MagickGetException(const MagickWand *wand,ExceptionType *severity)
262 %
263 % A description of each parameter follows:
264 %
265 % o wand: the magick wand.
266 %
267 % o severity: the severity of the error is returned here.
268 %
269 */
270 WandExport char *MagickGetException(const MagickWand *wand,
271  ExceptionType *severity)
272 {
273  char
274  *description;
275 
276  assert(wand != (const MagickWand *) NULL);
277  assert(wand->signature == MagickWandSignature);
278  if (wand->debug != MagickFalse)
279  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
280  assert(severity != (ExceptionType *) NULL);
281  *severity=wand->exception->severity;
282  description=(char *) AcquireQuantumMemory(2UL*MagickPathExtent,
283  sizeof(*description));
284  if (description == (char *) NULL)
285  {
286  (void) ThrowMagickException(wand->exception,GetMagickModule(),WandError,
287  "MemoryAllocationFailed","`%s'",wand->name);
288  return((char *) NULL);
289  }
290  *description='\0';
291  if (wand->exception->reason != (char *) NULL)
292  (void) CopyMagickString(description,GetLocaleExceptionMessage(
293  wand->exception->severity,wand->exception->reason),MagickPathExtent);
294  if (wand->exception->description != (char *) NULL)
295  {
296  (void) ConcatenateMagickString(description," (",MagickPathExtent);
297  (void) ConcatenateMagickString(description,GetLocaleExceptionMessage(
298  wand->exception->severity,wand->exception->description),MagickPathExtent);
299  (void) ConcatenateMagickString(description,")",MagickPathExtent);
300  }
301  return(description);
302 }
303 ␌
304 /*
305 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
306 % %
307 % %
308 % %
309 % M a g i c k G e t E x c e p t i o n T y p e %
310 % %
311 % %
312 % %
313 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
314 %
315 % MagickGetExceptionType() returns the exception type associated with the
316 % wand. If no exception has occurred, UndefinedExceptionType is returned.
317 %
318 % The format of the MagickGetExceptionType method is:
319 %
320 % ExceptionType MagickGetExceptionType(const MagickWand *wand)
321 %
322 % A description of each parameter follows:
323 %
324 % o wand: the magick wand.
325 %
326 */
327 WandExport ExceptionType MagickGetExceptionType(const MagickWand *wand)
328 {
329  assert(wand != (MagickWand *) NULL);
330  assert(wand->signature == MagickWandSignature);
331  if (wand->debug != MagickFalse)
332  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
333  return(wand->exception->severity);
334 }
335 ␌
336 /*
337 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
338 % %
339 % %
340 % %
341 % M a g i c k G e t I t e r a t o r I n d e x %
342 % %
343 % %
344 % %
345 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
346 %
347 % MagickGetIteratorIndex() returns the position of the iterator in the image
348 % list.
349 %
350 % The format of the MagickGetIteratorIndex method is:
351 %
352 % ssize_t MagickGetIteratorIndex(MagickWand *wand)
353 %
354 % A description of each parameter follows:
355 %
356 % o wand: the magick wand.
357 %
358 */
359 WandExport ssize_t MagickGetIteratorIndex(MagickWand *wand)
360 {
361  assert(wand != (MagickWand *) NULL);
362  assert(wand->signature == MagickWandSignature);
363  if (wand->debug != MagickFalse)
364  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
365  if (wand->images == (Image *) NULL)
366  {
367  (void) ThrowMagickException(wand->exception,GetMagickModule(),WandError,
368  "ContainsNoIterators","`%s'",wand->name);
369  return(-1);
370  }
371  return(GetImageIndexInList(wand->images));
372 }
373 ␌
374 /*
375 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
376 % %
377 % %
378 % %
379 % M a g i c k Q u e r y C o n f i g u r e O p t i o n %
380 % %
381 % %
382 % %
383 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
384 %
385 % MagickQueryConfigureOption() returns the value associated with the specified
386 % configure option.
387 %
388 % The format of the MagickQueryConfigureOption function is:
389 %
390 % char *MagickQueryConfigureOption(const char *option)
391 %
392 % A description of each parameter follows:
393 %
394 % o option: the option name.
395 %
396 */
397 WandExport char *MagickQueryConfigureOption(const char *option)
398 {
399  char
400  *value;
401 
402  const ConfigureInfo
403  **configure_info;
404 
405  ExceptionInfo
406  *exception;
407 
408  size_t
409  number_options;
410 
411  exception=AcquireExceptionInfo();
412  configure_info=GetConfigureInfoList(option,&number_options,exception);
413  exception=DestroyExceptionInfo(exception);
414  if (configure_info == (const ConfigureInfo **) NULL)
415  return((char *) NULL);
416  value=(char *) NULL;
417  if (number_options != 0)
418  value=AcquireString(configure_info[0]->value);
419  configure_info=(const ConfigureInfo **) RelinquishMagickMemory((void *)
420  configure_info);
421  return(value);
422 }
423 ␌
424 /*
425 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
426 % %
427 % %
428 % %
429 % M a g i c k Q u e r y C o n f i g u r e O p t i o n s %
430 % %
431 % %
432 % %
433 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
434 %
435 % MagickQueryConfigureOptions() returns any configure options that match the
436 % specified pattern (e.g. "*" for all). Options include NAME, VERSION,
437 % LIB_VERSION, etc.
438 %
439 % The format of the MagickQueryConfigureOptions function is:
440 %
441 % char **MagickQueryConfigureOptions(const char *pattern,
442 % size_t *number_options)
443 %
444 % A description of each parameter follows:
445 %
446 % o pattern: Specifies a pointer to a text string containing a pattern.
447 %
448 % o number_options: Returns the number of configure options in the list.
449 %
450 */
451 WandExport char **MagickQueryConfigureOptions(const char *pattern,
452  size_t *number_options)
453 {
454  char
455  **options;
456 
457  ExceptionInfo
458  *exception;
459 
460  exception=AcquireExceptionInfo();
461  options=GetConfigureList(pattern,number_options,exception);
462  exception=DestroyExceptionInfo(exception);
463  return(options);
464 }
465 ␌
466 /*
467 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
468 % %
469 % %
470 % %
471 % M a g i c k Q u e r y F o n t M e t r i c s %
472 % %
473 % %
474 % %
475 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
476 %
477 % MagickQueryFontMetrics() returns a 13 element array representing the
478 % following font metrics:
479 %
480 % Element Description
481 % -------------------------------------------------
482 % 0 character width
483 % 1 character height
484 % 2 ascender
485 % 3 descender
486 % 4 text width
487 % 5 text height
488 % 6 maximum horizontal advance
489 % 7 bounding box: x1
490 % 8 bounding box: y1
491 % 9 bounding box: x2
492 % 10 bounding box: y2
493 % 11 origin: x
494 % 12 origin: y
495 %
496 % The format of the MagickQueryFontMetrics method is:
497 %
498 % double *MagickQueryFontMetrics(MagickWand *wand,
499 % const DrawingWand *drawing_wand,const char *text)
500 %
501 % A description of each parameter follows:
502 %
503 % o wand: the Magick wand.
504 %
505 % o drawing_wand: the drawing wand.
506 %
507 % o text: the text.
508 %
509 */
510 WandExport double *MagickQueryFontMetrics(MagickWand *wand,
511  const DrawingWand *drawing_wand,const char *text)
512 {
513  double
514  *font_metrics;
515 
516  DrawInfo
517  *draw_info;
518 
519  MagickBooleanType
520  status;
521 
522  TypeMetric
523  metrics;
524 
525  assert(wand != (MagickWand *) NULL);
526  assert(wand->signature == MagickWandSignature);
527  if (wand->debug != MagickFalse)
528  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
529  assert(drawing_wand != (const DrawingWand *) NULL);
530  if (wand->images == (Image *) NULL)
531  {
532  (void) ThrowMagickException(wand->exception,GetMagickModule(),WandError,
533  "ContainsNoImages","`%s'",wand->name);
534  return((double *) NULL);
535  }
536  font_metrics=(double *) AcquireQuantumMemory(13UL,sizeof(*font_metrics));
537  if (font_metrics == (double *) NULL)
538  return((double *) NULL);
539  draw_info=PeekDrawingWand(drawing_wand);
540  if (draw_info == (DrawInfo *) NULL)
541  {
542  font_metrics=(double *) RelinquishMagickMemory(font_metrics);
543  return((double *) NULL);
544  }
545  (void) CloneString(&draw_info->text,text);
546  (void) memset(&metrics,0,sizeof(metrics));
547  status=GetTypeMetrics(wand->images,draw_info,&metrics,wand->exception);
548  draw_info=DestroyDrawInfo(draw_info);
549  if (status == MagickFalse)
550  {
551  font_metrics=(double *) RelinquishMagickMemory(font_metrics);
552  return((double *) NULL);
553  }
554  font_metrics[0]=metrics.pixels_per_em.x;
555  font_metrics[1]=metrics.pixels_per_em.y;
556  font_metrics[2]=metrics.ascent;
557  font_metrics[3]=metrics.descent;
558  font_metrics[4]=metrics.width;
559  font_metrics[5]=metrics.height;
560  font_metrics[6]=metrics.max_advance;
561  font_metrics[7]=metrics.bounds.x1;
562  font_metrics[8]=metrics.bounds.y1;
563  font_metrics[9]=metrics.bounds.x2;
564  font_metrics[10]=metrics.bounds.y2;
565  font_metrics[11]=metrics.origin.x;
566  font_metrics[12]=metrics.origin.y;
567  return(font_metrics);
568 }
569 ␌
570 /*
571 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
572 % %
573 % %
574 % %
575 % M a g i c k Q u e r y M u l t i l i n e F o n t M e t r i c s %
576 % %
577 % %
578 % %
579 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
580 %
581 % MagickQueryMultilineFontMetrics() returns a 13 element array representing the
582 % following font metrics:
583 %
584 % Element Description
585 % -------------------------------------------------
586 % 0 character width
587 % 1 character height
588 % 2 ascender
589 % 3 descender
590 % 4 text width
591 % 5 text height
592 % 6 maximum horizontal advance
593 % 7 bounding box: x1
594 % 8 bounding box: y1
595 % 9 bounding box: x2
596 % 10 bounding box: y2
597 % 11 origin: x
598 % 12 origin: y
599 %
600 % This method is like MagickQueryFontMetrics() but it returns the maximum text
601 % width and height for multiple lines of text.
602 %
603 % The format of the MagickQueryFontMetrics method is:
604 %
605 % double *MagickQueryMultilineFontMetrics(MagickWand *wand,
606 % const DrawingWand *drawing_wand,const char *text)
607 %
608 % A description of each parameter follows:
609 %
610 % o wand: the Magick wand.
611 %
612 % o drawing_wand: the drawing wand.
613 %
614 % o text: the text.
615 %
616 */
617 WandExport double *MagickQueryMultilineFontMetrics(MagickWand *wand,
618  const DrawingWand *drawing_wand,const char *text)
619 {
620  double
621  *font_metrics;
622 
623  DrawInfo
624  *draw_info;
625 
626  MagickBooleanType
627  status;
628 
629  TypeMetric
630  metrics;
631 
632  assert(wand != (MagickWand *) NULL);
633  assert(wand->signature == MagickWandSignature);
634  if (wand->debug != MagickFalse)
635  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
636  assert(drawing_wand != (const DrawingWand *) NULL);
637  if (wand->images == (Image *) NULL)
638  {
639  (void) ThrowMagickException(wand->exception,GetMagickModule(),WandError,
640  "ContainsNoImages","`%s'",wand->name);
641  return((double *) NULL);
642  }
643  font_metrics=(double *) AcquireQuantumMemory(13UL,sizeof(*font_metrics));
644  if (font_metrics == (double *) NULL)
645  return((double *) NULL);
646  draw_info=PeekDrawingWand(drawing_wand);
647  if (draw_info == (DrawInfo *) NULL)
648  {
649  font_metrics=(double *) RelinquishMagickMemory(font_metrics);
650  return((double *) NULL);
651  }
652  (void) CloneString(&draw_info->text,text);
653  (void) memset(&metrics,0,sizeof(metrics));
654  status=GetMultilineTypeMetrics(wand->images,draw_info,&metrics,
655  wand->exception);
656  draw_info=DestroyDrawInfo(draw_info);
657  if (status == MagickFalse)
658  {
659  font_metrics=(double *) RelinquishMagickMemory(font_metrics);
660  return((double *) NULL);
661  }
662  font_metrics[0]=metrics.pixels_per_em.x;
663  font_metrics[1]=metrics.pixels_per_em.y;
664  font_metrics[2]=metrics.ascent;
665  font_metrics[3]=metrics.descent;
666  font_metrics[4]=metrics.width;
667  font_metrics[5]=metrics.height;
668  font_metrics[6]=metrics.max_advance;
669  font_metrics[7]=metrics.bounds.x1;
670  font_metrics[8]=metrics.bounds.y1;
671  font_metrics[9]=metrics.bounds.x2;
672  font_metrics[10]=metrics.bounds.y2;
673  font_metrics[11]=metrics.origin.x;
674  font_metrics[12]=metrics.origin.y;
675  return(font_metrics);
676 }
677 ␌
678 /*
679 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
680 % %
681 % %
682 % %
683 % M a g i c k Q u e r y F o n t s %
684 % %
685 % %
686 % %
687 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
688 %
689 % MagickQueryFonts() returns any font that match the specified pattern (e.g.
690 % "*" for all).
691 %
692 % The format of the MagickQueryFonts function is:
693 %
694 % char **MagickQueryFonts(const char *pattern,size_t *number_fonts)
695 %
696 % A description of each parameter follows:
697 %
698 % o pattern: Specifies a pointer to a text string containing a pattern.
699 %
700 % o number_fonts: Returns the number of fonts in the list.
701 %
702 */
703 WandExport char **MagickQueryFonts(const char *pattern,
704  size_t *number_fonts)
705 {
706  char
707  **fonts;
708 
709  ExceptionInfo
710  *exception;
711 
712  exception=AcquireExceptionInfo();
713  fonts=GetTypeList(pattern,number_fonts,exception);
714  exception=DestroyExceptionInfo(exception);
715  return(fonts);
716 }
717 ␌
718 /*
719 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
720 % %
721 % %
722 % %
723 % M a g i c k Q u e r y F o r m a t s %
724 % %
725 % %
726 % %
727 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
728 %
729 % MagickQueryFormats() returns any image formats that match the specified
730 % pattern (e.g. "*" for all).
731 %
732 % The format of the MagickQueryFormats function is:
733 %
734 % char **MagickQueryFormats(const char *pattern,size_t *number_formats)
735 %
736 % A description of each parameter follows:
737 %
738 % o pattern: Specifies a pointer to a text string containing a pattern.
739 %
740 % o number_formats: This integer returns the number of image formats in the
741 % list.
742 %
743 */
744 WandExport char **MagickQueryFormats(const char *pattern,
745  size_t *number_formats)
746 {
747  char
748  **formats;
749 
750  ExceptionInfo
751  *exception;
752 
753  exception=AcquireExceptionInfo();
754  formats=GetMagickList(pattern,number_formats,exception);
755  exception=DestroyExceptionInfo(exception);
756  return(formats);
757 }
758 ␌
759 /*
760 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
761 % %
762 % %
763 % %
764 % M a g i c k R e l i n q u i s h M e m o r y %
765 % %
766 % %
767 % %
768 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
769 %
770 % MagickRelinquishMemory() relinquishes memory resources returned by such
771 % methods as MagickIdentifyImage(), MagickGetException(), etc.
772 %
773 % The format of the MagickRelinquishMemory method is:
774 %
775 % void *MagickRelinquishMemory(void *resource)
776 %
777 % A description of each parameter follows:
778 %
779 % o resource: Relinquish the memory associated with this resource.
780 %
781 */
782 WandExport void *MagickRelinquishMemory(void *memory)
783 {
784  if (IsEventLogging() != MagickFalse)
785  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
786  return(RelinquishMagickMemory(memory));
787 }
788 ␌
789 /*
790 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
791 % %
792 % %
793 % %
794 % M a g i c k R e s e t I t e r a t o r %
795 % %
796 % %
797 % %
798 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
799 %
800 % MagickResetIterator() resets the wand iterator.
801 %
802 % It is typically used either before iterating though images, or before
803 % calling specific functions such as MagickAppendImages() to append all
804 % images together.
805 %
806 % Afterward you can use MagickNextImage() to iterate over all the images
807 % in a wand container, starting with the first image.
808 %
809 % Using this before MagickAddImages() or MagickReadImages() will cause
810 % new images to be inserted between the first and second image.
811 %
812 % The format of the MagickResetIterator method is:
813 %
814 % void MagickResetIterator(MagickWand *wand)
815 %
816 % A description of each parameter follows:
817 %
818 % o wand: the magick wand.
819 %
820 */
821 WandExport void MagickResetIterator(MagickWand *wand)
822 {
823  assert(wand != (MagickWand *) NULL);
824  assert(wand->signature == MagickWandSignature);
825  if (wand->debug != MagickFalse)
826  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
827  wand->images=GetFirstImageInList(wand->images);
828  wand->insert_before=MagickFalse; /* Insert/add after current (first) image */
829  wand->image_pending=MagickTrue; /* NextImage will set first image */
830 }
831 ␌
832 /*
833 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
834 % %
835 % %
836 % %
837 % M a g i c k S e t F i r s t I t e r a t o r %
838 % %
839 % %
840 % %
841 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
842 %
843 % MagickSetFirstIterator() sets the wand iterator to the first image.
844 %
845 % After using any images added to the wand using MagickAddImage() or
846 % MagickReadImage() will be prepended before any image in the wand.
847 %
848 % Also the current image has been set to the first image (if any) in the
849 % Magick Wand. Using MagickNextImage() will then set the current image
850 % to the second image in the list (if present).
851 %
852 % This operation is similar to MagickResetIterator() but differs in how
853 % MagickAddImage(), MagickReadImage(), and MagickNextImage() behaves
854 % afterward.
855 %
856 % The format of the MagickSetFirstIterator method is:
857 %
858 % void MagickSetFirstIterator(MagickWand *wand)
859 %
860 % A description of each parameter follows:
861 %
862 % o wand: the magick wand.
863 %
864 */
865 WandExport void MagickSetFirstIterator(MagickWand *wand)
866 {
867  assert(wand != (MagickWand *) NULL);
868  assert(wand->signature == MagickWandSignature);
869  if (wand->debug != MagickFalse)
870  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
871  wand->images=GetFirstImageInList(wand->images);
872  wand->insert_before=MagickTrue; /* Insert/add before the first image */
873  wand->image_pending=MagickFalse; /* NextImage will set next image */
874 }
875 ␌
876 /*
877 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
878 % %
879 % %
880 % %
881 % M a g i c k S e t I t e r a t o r I n d e x %
882 % %
883 % %
884 % %
885 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
886 %
887 % MagickSetIteratorIndex() set the iterator to the given position in the
888 % image list specified with the index parameter. A zero index will set
889 % the first image as current, and so on. Negative indexes can be used
890 % to specify an image relative to the end of the images in the wand, with
891 % -1 being the last image in the wand.
892 %
893 % If the index is invalid (range too large for number of images in wand)
894 % the function will return MagickFalse, but no 'exception' will be raised,
895 % as it is not actually an error. In that case the current image will not
896 % change.
897 %
898 % After using any images added to the wand using MagickAddImage() or
899 % MagickReadImage() will be added after the image indexed, regardless
900 % of if a zero (first image in list) or negative index (from end) is used.
901 %
902 % Jumping to index 0 is similar to MagickResetIterator() but differs in how
903 % MagickNextImage() behaves afterward.
904 %
905 % The format of the MagickSetIteratorIndex method is:
906 %
907 % MagickBooleanType MagickSetIteratorIndex(MagickWand *wand,
908 % const ssize_t index)
909 %
910 % A description of each parameter follows:
911 %
912 % o wand: the magick wand.
913 %
914 % o index: the scene number.
915 %
916 */
917 WandExport MagickBooleanType MagickSetIteratorIndex(MagickWand *wand,
918  const ssize_t index)
919 {
920  Image
921  *image;
922 
923  assert(wand != (MagickWand *) NULL);
924  assert(wand->signature == MagickWandSignature);
925  if (wand->debug != MagickFalse)
926  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
927  if (wand->images == (Image *) NULL)
928  return(MagickFalse);
929  image=GetImageFromList(wand->images,index);
930  if (image == (Image *) NULL)
931  return(MagickFalse); /* this is not an exception! Just range error. */
932  wand->images=image;
933  wand->insert_before=MagickFalse; /* Insert/Add after (this) image */
934  wand->image_pending=MagickFalse; /* NextImage will set next image */
935  return(MagickTrue);
936 }
937 /*
938 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
939 % %
940 % %
941 % %
942 % M a g i c k S e t L a s t I t e r a t o r %
943 % %
944 % %
945 % %
946 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
947 %
948 % MagickSetLastIterator() sets the wand iterator to the last image.
949 %
950 % The last image is actually the current image, and the next use of
951 % MagickPreviousImage() will not change this allowing this function to be
952 % used to iterate over the images in the reverse direction. In this sense it
953 % is more like MagickResetIterator() than MagickSetFirstIterator().
954 %
955 % Typically this function is used before MagickAddImage(), MagickReadImage()
956 % functions to ensure new images are appended to the very end of wand's image
957 % list.
958 %
959 % The format of the MagickSetLastIterator method is:
960 %
961 % void MagickSetLastIterator(MagickWand *wand)
962 %
963 % A description of each parameter follows:
964 %
965 % o wand: the magick wand.
966 %
967 */
968 WandExport void MagickSetLastIterator(MagickWand *wand)
969 {
970  assert(wand != (MagickWand *) NULL);
971  assert(wand->signature == MagickWandSignature);
972  if (wand->debug != MagickFalse)
973  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
974  wand->images=GetLastImageInList(wand->images);
975  wand->insert_before=MagickFalse; /* Insert/add after current (last) image */
976  wand->image_pending=MagickTrue; /* PreviousImage will return last image */
977 }
978 ␌
979 /*
980 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
981 % %
982 % %
983 % %
984 % M a g i c k W a n d G e n e s i s %
985 % %
986 % %
987 % %
988 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
989 %
990 % MagickWandGenesis() initializes the MagickWand environment.
991 %
992 % The format of the MagickWandGenesis method is:
993 %
994 % void MagickWandGenesis(void)
995 %
996 */
997 WandExport void MagickWandGenesis(void)
998 {
999  if (IsMagickCoreInstantiated() == MagickFalse)
1000  MagickCoreGenesis((char *) NULL,MagickFalse);
1001 }
1002 ␌
1003 /*
1004 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1005 % %
1006 % %
1007 % %
1008 % M a g i c k W a n d T e r m i n u s %
1009 % %
1010 % %
1011 % %
1012 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1013 %
1014 % MagickWandTerminus() terminates the MagickWand environment.
1015 %
1016 % The format of the MagickWandTerminus method is:
1017 %
1018 % void MagickWandTerminus(void)
1019 %
1020 */
1021 WandExport void MagickWandTerminus(void)
1022 {
1023  DestroyWandIds();
1024  MagickCoreTerminus();
1025 }
1026 ␌
1027 /*
1028 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1029 % %
1030 % %
1031 % %
1032 % N e w M a g i c k W a n d %
1033 % %
1034 % %
1035 % %
1036 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1037 %
1038 % NewMagickWand() returns a wand required for all other methods in the API.
1039 % A fatal exception is thrown if there is not enough memory to allocate the
1040 % wand. Use DestroyMagickWand() to dispose of the wand when it is no longer
1041 % needed.
1042 %
1043 % The format of the NewMagickWand method is:
1044 %
1045 % MagickWand *NewMagickWand(void)
1046 %
1047 */
1048 WandExport MagickWand *NewMagickWand(void)
1049 {
1050  MagickWand
1051  *wand;
1052 
1053  CheckMagickCoreCompatibility();
1054  wand=(MagickWand *) AcquireMagickMemory(sizeof(*wand));
1055  if (wand == (MagickWand *) NULL)
1056  ThrowWandFatalException(ResourceLimitFatalError,"MemoryAllocationFailed",
1057  GetExceptionMessage(errno));
1058  (void) memset(wand,0,sizeof(*wand));
1059  wand->id=AcquireWandId();
1060  (void) FormatLocaleString(wand->name,MagickPathExtent,"%s-%.20g",MagickWandId,
1061  (double) wand->id);
1062  wand->images=NewImageList();
1063  wand->image_info=AcquireImageInfo();
1064  wand->exception=AcquireExceptionInfo();
1065  wand->debug=IsEventLogging();
1066  if (wand->debug != MagickFalse)
1067  (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",wand->name);
1068  wand->signature=MagickWandSignature;
1069  return(wand);
1070 }
1071 ␌
1072 /*
1073 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1074 % %
1075 % %
1076 % %
1077 % N e w M a g i c k W a n d F r o m I m a g e %
1078 % %
1079 % %
1080 % %
1081 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1082 %
1083 % NewMagickWandFromImage() returns a wand with an image.
1084 %
1085 % The format of the NewMagickWandFromImage method is:
1086 %
1087 % MagickWand *NewMagickWandFromImage(const Image *image)
1088 %
1089 % A description of each parameter follows:
1090 %
1091 % o image: the image.
1092 %
1093 */
1094 WandExport MagickWand *NewMagickWandFromImage(const Image *image)
1095 {
1096  MagickWand
1097  *wand;
1098 
1099  wand=NewMagickWand();
1100  wand->images=CloneImage(image,0,0,MagickTrue,wand->exception);
1101  return(wand);
1102 }
1103 ␌
1104 /*
1105 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1106 % %
1107 % %
1108 % %
1109 % I s M a g i c k W a n d I n s t a n t i a t e d %
1110 % %
1111 % %
1112 % %
1113 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1114 %
1115 % IsMagickWandInstantiated() returns MagickTrue if the ImageMagick environment
1116 % is currently instantiated-- that is, MagickWandGenesis() has been called but
1117 % MagickWandTerminus() has not.
1118 %
1119 % The format of the IsMagickWandInstantiated method is:
1120 %
1121 % MagickBooleanType IsMagickWandInstantiated(void)
1122 %
1123 */
1124 MagickExport MagickBooleanType IsMagickWandInstantiated(void)
1125 {
1126  return(IsMagickCoreInstantiated());
1127 }
_DrawingWand
Definition: drawing-wand.c:92
_MagickWand
Definition: magick-wand-private.h:63