MagickCore 7.1.1
Convert, Edit, Or Compose Bitmap Images
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annotate.c
1/*
2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3% %
4% %
5% %
6% AAA N N N N OOO TTTTT AAA TTTTT EEEEE %
7% A A NN N NN N O O T A A T E %
8% AAAAA N N N N N N O O T AAAAA T EEE %
9% A A N NN N NN O O T A A T E %
10% A A N N N N OOO T A A T EEEEE %
11% %
12% %
13% MagickCore Image Annotation Methods %
14% %
15% Software Design %
16% Cristy %
17% July 1992 %
18% %
19% %
20% Copyright @ 1999 ImageMagick Studio LLC, a non-profit organization %
21% dedicated to making software imaging solutions freely available. %
22% %
23% You may not use this file except in compliance with the License. You may %
24% obtain a copy of the License at %
25% %
26% https://imagemagick.org/script/license.php %
27% %
28% Unless required by applicable law or agreed to in writing, software %
29% distributed under the License is distributed on an "AS IS" BASIS, %
30% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
31% See the License for the specific language governing permissions and %
32% limitations under the License. %
33% %
34%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
35%
36% Digital Applications (www.digapp.com) contributed the stroked text algorithm.
37% It was written by Leonard Rosenthol.
38%
39%
40*/
41␌
42/*
43 Include declarations.
44*/
45#include "MagickCore/studio.h"
46#include "MagickCore/annotate.h"
47#include "MagickCore/annotate-private.h"
48#include "MagickCore/attribute.h"
49#include "MagickCore/cache-private.h"
50#include "MagickCore/cache-view.h"
51#include "MagickCore/channel.h"
52#include "MagickCore/client.h"
53#include "MagickCore/color.h"
54#include "MagickCore/color-private.h"
55#include "MagickCore/colorspace-private.h"
56#include "MagickCore/composite.h"
57#include "MagickCore/composite-private.h"
58#include "MagickCore/constitute.h"
59#include "MagickCore/draw.h"
60#include "MagickCore/draw-private.h"
61#include "MagickCore/enhance.h"
62#include "MagickCore/exception.h"
63#include "MagickCore/exception-private.h"
64#include "MagickCore/gem.h"
65#include "MagickCore/geometry.h"
66#include "MagickCore/image-private.h"
67#include "MagickCore/log.h"
68#include "MagickCore/quantum.h"
69#include "MagickCore/quantum-private.h"
70#include "MagickCore/pixel-accessor.h"
71#include "MagickCore/policy.h"
72#include "MagickCore/property.h"
73#include "MagickCore/resource_.h"
74#include "MagickCore/semaphore.h"
75#include "MagickCore/statistic.h"
76#include "MagickCore/string_.h"
77#include "MagickCore/token.h"
78#include "MagickCore/token-private.h"
79#include "MagickCore/transform.h"
80#include "MagickCore/transform-private.h"
81#include "MagickCore/type.h"
82#include "MagickCore/utility.h"
83#include "MagickCore/utility-private.h"
84#include "MagickCore/xwindow.h"
85#include "MagickCore/xwindow-private.h"
86#if defined(MAGICKCORE_FREETYPE_DELEGATE)
87#if defined(__MINGW32__)
88# undef interface
89#endif
90#include <ft2build.h>
91#if defined(FT_FREETYPE_H)
92# include FT_FREETYPE_H
93#else
94# include <freetype/freetype.h>
95#endif
96#if defined(FT_GLYPH_H)
97# include FT_GLYPH_H
98#else
99# include <freetype/ftglyph.h>
100#endif
101#if defined(FT_OUTLINE_H)
102# include FT_OUTLINE_H
103#else
104# include <freetype/ftoutln.h>
105#endif
106#if defined(FT_BBOX_H)
107# include FT_BBOX_H
108#else
109# include <freetype/ftbbox.h>
110#endif
111#if defined(FT_MODULE_H)
112# include FT_MODULE_H
113#else
114# include <freetype/ftmodapi.h>
115#endif
116#endif
117#if defined(MAGICKCORE_RAQM_DELEGATE)
118#include <raqm.h>
119#endif
120typedef struct _GraphemeInfo
121{
122 ssize_t
123 index,
124 x_offset,
125 x_advance,
126 y_offset,
127 y_advance;
128
129 size_t
130 cluster;
131} GraphemeInfo;
132␌
133/*
134 Annotate semaphores.
135*/
136static SemaphoreInfo
137 *annotate_semaphore = (SemaphoreInfo *) NULL;
138␌
139/*
140 Forward declarations.
141*/
142static MagickBooleanType
143 RenderType(Image *,const DrawInfo *,const PointInfo *,TypeMetric *,
144 ExceptionInfo *),
145 RenderPostscript(Image *,const DrawInfo *,const PointInfo *,TypeMetric *,
146 ExceptionInfo *),
147 RenderFreetype(Image *,const DrawInfo *,const char *,const PointInfo *,
148 TypeMetric *,ExceptionInfo *),
149 RenderX11(Image *,const DrawInfo *,const PointInfo *,TypeMetric *,
150 ExceptionInfo *);
151␌
152/*
153%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
154% %
155% %
156% %
157+ A n n o t a t e C o m p o n e n t G e n e s i s %
158% %
159% %
160% %
161%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
162%
163% AnnotateComponentGenesis() instantiates the annotate component.
164%
165% The format of the AnnotateComponentGenesis method is:
166%
167% MagickBooleanType AnnotateComponentGenesis(void)
168%
169*/
170MagickPrivate MagickBooleanType AnnotateComponentGenesis(void)
171{
172 if (annotate_semaphore == (SemaphoreInfo *) NULL)
173 annotate_semaphore=AcquireSemaphoreInfo();
174 return(MagickTrue);
175}
176␌
177/*
178%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
179% %
180% %
181% %
182+ A n n o t a t e C o m p o n e n t T e r m i n u s %
183% %
184% %
185% %
186%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
187%
188% AnnotateComponentTerminus() destroys the annotate component.
189%
190% The format of the AnnotateComponentTerminus method is:
191%
192% AnnotateComponentTerminus(void)
193%
194*/
195MagickPrivate void AnnotateComponentTerminus(void)
196{
197 if (annotate_semaphore == (SemaphoreInfo *) NULL)
198 ActivateSemaphoreInfo(&annotate_semaphore);
199 RelinquishSemaphoreInfo(&annotate_semaphore);
200}
201␌
202/*
203%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
204% %
205% %
206% %
207% A n n o t a t e I m a g e %
208% %
209% %
210% %
211%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
212%
213% AnnotateImage() annotates an image with text.
214%
215% The format of the AnnotateImage method is:
216%
217% MagickBooleanType AnnotateImage(Image *image,DrawInfo *draw_info,
218% ExceptionInfo *exception)
219%
220% A description of each parameter follows:
221%
222% o image: the image.
223%
224% o draw_info: the draw info.
225%
226% o exception: return any errors or warnings in this structure.
227%
228*/
229MagickExport MagickBooleanType AnnotateImage(Image *image,
230 const DrawInfo *draw_info,ExceptionInfo *exception)
231{
232 char
233 *p,
234 color[MagickPathExtent],
235 primitive[MagickPathExtent],
236 *text,
237 **textlist;
238
239 DrawInfo
240 *annotate,
241 *annotate_info;
242
243 GeometryInfo
244 geometry_info;
245
246 MagickBooleanType
247 status;
248
249 PixelInfo
250 pixel;
251
252 PointInfo
253 offset;
254
255 RectangleInfo
256 geometry;
257
258 ssize_t
259 i;
260
261 TypeMetric
262 metrics;
263
264 size_t
265 height,
266 number_lines;
267
268 assert(image != (Image *) NULL);
269 assert(image->signature == MagickCoreSignature);
270 if (IsEventLogging() != MagickFalse)
271 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
272 assert(draw_info != (DrawInfo *) NULL);
273 assert(draw_info->signature == MagickCoreSignature);
274 if (draw_info->text == (char *) NULL)
275 return(MagickFalse);
276 if (*draw_info->text == '\0')
277 return(MagickTrue);
278 annotate=CloneDrawInfo((ImageInfo *) NULL,draw_info);
279 text=annotate->text;
280 annotate->text=(char *) NULL;
281 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
282 number_lines=1;
283 for (p=text; *p != '\0'; p++)
284 if (*p == '\n')
285 number_lines++;
286 textlist=(char **) AcquireQuantumMemory(number_lines+1,sizeof(*textlist));
287 if (textlist == (char **) NULL)
288 {
289 annotate_info=DestroyDrawInfo(annotate_info);
290 annotate=DestroyDrawInfo(annotate);
291 text=DestroyString(text);
292 return(MagickFalse);
293 }
294 p=text;
295 for (i=0; i < (ssize_t) number_lines; i++)
296 {
297 char
298 *q;
299
300 textlist[i]=p;
301 for (q=p; *q != '\0'; q++)
302 if ((*q == '\r') || (*q == '\n'))
303 break;
304 if (*q == '\r')
305 {
306 *q='\0';
307 q++;
308 }
309 *q='\0';
310 p=q+1;
311 }
312 textlist[i]=(char *) NULL;
313 SetGeometry(image,&geometry);
314 SetGeometryInfo(&geometry_info);
315 if (annotate_info->geometry != (char *) NULL)
316 {
317 (void) ParsePageGeometry(image,annotate_info->geometry,&geometry,
318 exception);
319 (void) ParseGeometry(annotate_info->geometry,&geometry_info);
320 }
321 if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
322 {
323 annotate_info=DestroyDrawInfo(annotate_info);
324 annotate=DestroyDrawInfo(annotate);
325 textlist=(char **) RelinquishMagickMemory(textlist);
326 text=DestroyString(text);
327 return(MagickFalse);
328 }
329 if (IsGrayColorspace(image->colorspace) != MagickFalse)
330 (void) SetImageColorspace(image,sRGBColorspace,exception);
331 status=MagickTrue;
332 (void) memset(&metrics,0,sizeof(metrics));
333 for (i=0; textlist[i] != (char *) NULL; i++)
334 {
335 if (*textlist[i] == '\0')
336 continue;
337 /*
338 Position text relative to image.
339 */
340 annotate_info->affine.tx=geometry_info.xi-image->page.x;
341 annotate_info->affine.ty=geometry_info.psi-image->page.y;
342 (void) CloneString(&annotate->text,textlist[i]);
343 if ((metrics.width == 0) || (annotate->gravity != NorthWestGravity))
344 (void) GetTypeMetrics(image,annotate,&metrics,exception);
345 height=CastDoubleToUnsigned(metrics.ascent-metrics.descent+0.5);
346 if (height == 0)
347 height=draw_info->pointsize;
348 height=CastDoubleToUnsigned(floor((double) height+
349 draw_info->interline_spacing+0.5));
350 switch (annotate->gravity)
351 {
352 case UndefinedGravity:
353 default:
354 {
355 offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height;
356 offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height;
357 break;
358 }
359 case (GravityType) NorthWestGravity:
360 {
361 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+i*
362 annotate_info->affine.ry*height+annotate_info->affine.ry*
363 (metrics.ascent+metrics.descent);
364 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
365 annotate_info->affine.sy*height+annotate_info->affine.sy*
366 metrics.ascent;
367 break;
368 }
369 case (GravityType) NorthGravity:
370 {
371 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
372 geometry.width/2.0+i*annotate_info->affine.ry*height-
373 annotate_info->affine.sx*metrics.width/2.0+annotate_info->affine.ry*
374 (metrics.ascent+metrics.descent);
375 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
376 annotate_info->affine.sy*height+annotate_info->affine.sy*
377 metrics.ascent-annotate_info->affine.rx*metrics.width/2.0;
378 break;
379 }
380 case (GravityType) NorthEastGravity:
381 {
382 offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
383 geometry.width+i*annotate_info->affine.ry*height-
384 annotate_info->affine.sx*metrics.width+annotate_info->affine.ry*
385 (metrics.ascent+metrics.descent)-1.0;
386 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
387 annotate_info->affine.sy*height+annotate_info->affine.sy*
388 metrics.ascent-annotate_info->affine.rx*metrics.width;
389 break;
390 }
391 case (GravityType) WestGravity:
392 {
393 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+i*
394 annotate_info->affine.ry*height+annotate_info->affine.ry*
395 (metrics.ascent+metrics.descent-(number_lines-1.0)*height)/2.0;
396 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
397 geometry.height/2.0+i*annotate_info->affine.sy*height+
398 annotate_info->affine.sy*(metrics.ascent+metrics.descent-
399 (number_lines-1.0)*height)/2.0;
400 break;
401 }
402 case (GravityType) CenterGravity:
403 {
404 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
405 geometry.width/2.0+i*annotate_info->affine.ry*height-
406 annotate_info->affine.sx*metrics.width/2.0+annotate_info->affine.ry*
407 (metrics.ascent+metrics.descent-(number_lines-1.0)*height)/2.0;
408 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
409 geometry.height/2.0+i*annotate_info->affine.sy*height-
410 annotate_info->affine.rx*metrics.width/2.0+annotate_info->affine.sy*
411 (metrics.ascent+metrics.descent-(number_lines-1.0)*height)/2.0;
412 break;
413 }
414 case (GravityType) EastGravity:
415 {
416 offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
417 geometry.width+i*annotate_info->affine.ry*height-
418 annotate_info->affine.sx*metrics.width+
419 annotate_info->affine.ry*(metrics.ascent+metrics.descent-
420 (number_lines-1.0)*height)/2.0-1.0;
421 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
422 geometry.height/2.0+i*annotate_info->affine.sy*height-
423 annotate_info->affine.rx*metrics.width+
424 annotate_info->affine.sy*(metrics.ascent+metrics.descent-
425 (number_lines-1.0)*height)/2.0;
426 break;
427 }
428 case (GravityType) SouthWestGravity:
429 {
430 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+i*
431 annotate_info->affine.ry*height-annotate_info->affine.ry*
432 (number_lines-1.0)*height;
433 offset.y=(geometry.height == 0 ? 1.0 : -1.0)*annotate_info->affine.ty+
434 geometry.height+i*annotate_info->affine.sy*height-
435 annotate_info->affine.sy*(number_lines-1.0)*height+metrics.descent;
436 break;
437 }
438 case (GravityType) SouthGravity:
439 {
440 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
441 geometry.width/2.0+i*annotate_info->affine.ry*height-
442 annotate_info->affine.sx*metrics.width/2.0-
443 annotate_info->affine.ry*(number_lines-1.0)*height/2.0;
444 offset.y=(geometry.height == 0 ? 1.0 : -1.0)*annotate_info->affine.ty+
445 geometry.height+i*annotate_info->affine.sy*height-
446 annotate_info->affine.rx*metrics.width/2.0-
447 annotate_info->affine.sy*(number_lines-1.0)*height+metrics.descent;
448 break;
449 }
450 case (GravityType) SouthEastGravity:
451 {
452 offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
453 geometry.width+i*annotate_info->affine.ry*height-
454 annotate_info->affine.sx*metrics.width-
455 annotate_info->affine.ry*(number_lines-1.0)*height-1.0;
456 offset.y=(geometry.height == 0 ? 1.0 : -1.0)*annotate_info->affine.ty+
457 geometry.height+i*annotate_info->affine.sy*height-
458 annotate_info->affine.rx*metrics.width-
459 annotate_info->affine.sy*(number_lines-1.0)*height+metrics.descent;
460 break;
461 }
462 }
463 switch (annotate->align)
464 {
465 case LeftAlign:
466 {
467 offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height;
468 offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height;
469 break;
470 }
471 case CenterAlign:
472 {
473 offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height-
474 annotate_info->affine.sx*metrics.width/2.0;
475 offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height-
476 annotate_info->affine.rx*metrics.width/2.0;
477 break;
478 }
479 case RightAlign:
480 {
481 offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height-
482 annotate_info->affine.sx*metrics.width;
483 offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height-
484 annotate_info->affine.rx*metrics.width;
485 break;
486 }
487 default:
488 break;
489 }
490 if (draw_info->undercolor.alpha != (MagickRealType) TransparentAlpha)
491 {
492 DrawInfo
493 *undercolor_info;
494
495 /*
496 Text box.
497 */
498 undercolor_info=CloneDrawInfo((ImageInfo *) NULL,(DrawInfo *) NULL);
499 undercolor_info->fill=draw_info->undercolor;
500 undercolor_info->affine=draw_info->affine;
501 undercolor_info->affine.tx=offset.x-draw_info->affine.ry*metrics.ascent;
502 undercolor_info->affine.ty=offset.y-draw_info->affine.sy*metrics.ascent;
503 (void) FormatLocaleString(primitive,MagickPathExtent,
504 "rectangle 0.0,0.0 %g,%g",metrics.origin.x,(double) height);
505 (void) CloneString(&undercolor_info->primitive,primitive);
506 (void) DrawImage(image,undercolor_info,exception);
507 (void) DestroyDrawInfo(undercolor_info);
508 }
509 annotate_info->affine.tx=offset.x;
510 annotate_info->affine.ty=offset.y;
511 pixel=annotate_info->fill;
512 if (annotate_info->stroke.alpha != (MagickRealType) TransparentAlpha)
513 pixel=annotate_info->stroke;
514 (void) QueryColorname(image,&pixel,AllCompliance,color,exception);
515 (void) FormatLocaleString(primitive,MagickPathExtent,"stroke %s "
516 "stroke-width %g line 0,0 %g,0",color,(double)
517 metrics.underline_thickness,(double) metrics.width);
518 /*
519 Annotate image with text.
520 */
521 switch (annotate->decorate)
522 {
523 case OverlineDecoration:
524 {
525 annotate_info->affine.ty-=(draw_info->affine.sy*(metrics.ascent+
526 metrics.descent-metrics.underline_position));
527 (void) CloneString(&annotate_info->primitive,primitive);
528 (void) DrawImage(image,annotate_info,exception);
529 break;
530 }
531 case UnderlineDecoration:
532 {
533 annotate_info->affine.ty-=(draw_info->affine.sy*
534 metrics.underline_position);
535 (void) CloneString(&annotate_info->primitive,primitive);
536 (void) DrawImage(image,annotate_info,exception);
537 break;
538 }
539 default:
540 break;
541 }
542 status=RenderType(image,annotate,&offset,&metrics,exception);
543 if (status == MagickFalse)
544 break;
545
546 if (annotate->decorate == LineThroughDecoration) {
547 annotate_info->affine.ty-=(draw_info->affine.sy*(height+
548 metrics.underline_position+metrics.descent*2)/2.0);
549 (void) CloneString(&annotate_info->primitive,primitive);
550 (void) DrawImage(image,annotate_info,exception);
551 }
552 }
553 /*
554 Relinquish resources.
555 */
556 annotate_info=DestroyDrawInfo(annotate_info);
557 annotate=DestroyDrawInfo(annotate);
558 textlist=(char **) RelinquishMagickMemory(textlist);
559 text=DestroyString(text);
560 return(status);
561}
562␌
563/*
564%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
565% %
566% %
567% %
568% F o r m a t M a g i c k C a p t i o n %
569% %
570% %
571% %
572%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
573%
574% FormatMagickCaption() formats a caption so that it fits within the image
575% width. It returns the number of lines in the formatted caption.
576%
577% The format of the FormatMagickCaption method is:
578%
579% ssize_t FormatMagickCaption(Image *image,DrawInfo *draw_info,
580% const MagickBooleanType split,TypeMetric *metrics,char **caption,
581% ExceptionInfo *exception)
582%
583% A description of each parameter follows.
584%
585% o image: The image.
586%
587% o draw_info: the draw info.
588%
589% o split: when no convenient line breaks-- insert newline.
590%
591% o metrics: Return the font metrics in this structure.
592%
593% o caption: the caption.
594%
595% o exception: return any errors or warnings in this structure.
596%
597*/
598
599static inline char *ReplaceSpaceWithNewline(char **caption,char *space)
600{
601 size_t
602 octets;
603
604 if ((caption == (char **) NULL) || (space == (char *) NULL))
605 return((char *) NULL);
606 octets=(size_t) GetUTFOctets(space);
607 if (octets == 1)
608 *space='\n';
609 else
610 {
611 char
612 *target;
613
614 size_t
615 length;
616
617 ssize_t
618 offset;
619
620 length=strlen(*caption);
621 *space='\n';
622 offset=space-(*caption);
623 if (offset >= 0)
624 {
625 target=AcquireString(*caption);
626 CopyMagickString(target,*caption,(size_t) offset+2);
627 ConcatenateMagickString(target,space+octets,length);
628 (void) DestroyString(*caption);
629 *caption=target;
630 space=(*caption)+offset;
631 }
632 }
633 return(space);
634}
635
636MagickExport ssize_t FormatMagickCaption(Image *image,DrawInfo *draw_info,
637 const MagickBooleanType split,TypeMetric *metrics,char **caption,
638 ExceptionInfo *exception)
639{
640 char
641 *p,
642 *q,
643 *s;
644
645 MagickBooleanType
646 status;
647
648 size_t
649 width;
650
651 ssize_t
652 i,
653 n;
654
655 q=draw_info->text;
656 s=(char *) NULL;
657 width=0;
658 for (p=(*caption); GetUTFCode(p) != 0; p+=(ptrdiff_t) GetUTFOctets(p))
659 {
660 int
661 code;
662
663 code=GetUTFCode(p);
664 if (code == '\n')
665 {
666 q=draw_info->text;
667 continue;
668 }
669 if ((draw_info->word_break != BreakWordBreakType) &&
670 (IsUTFSpace(code) != MagickFalse) &&
671 (IsNonBreakingUTFSpace(code) == MagickFalse))
672 {
673 s=p;
674 if (width > image->columns)
675 p=ReplaceSpaceWithNewline(caption,s);
676 }
677 for (i=0; i < (ssize_t) GetUTFOctets(p); i++)
678 *q++=(*(p+i));
679 *q='\0';
680 status=GetTypeMetrics(image,draw_info,metrics,exception);
681 if (status == MagickFalse)
682 break;
683 width=CastDoubleToUnsigned(metrics->width+draw_info->stroke_width+0.5);
684 if (width <= image->columns)
685 continue;
686 if (s != (char *) NULL)
687 p=ReplaceSpaceWithNewline(caption,s);
688 else
689 if ((split != MagickFalse) || (GetUTFOctets(p) > 2))
690 {
691 /*
692 No convenient line breaks-- insert newline.
693 */
694 n=p-(*caption);
695 if ((n > 0) && ((*caption)[n-1] != '\n'))
696 {
697 char
698 *target;
699
700 target=AcquireString(*caption);
701 CopyMagickString(target,*caption,(size_t) n+1);
702 ConcatenateMagickString(target,"\n",strlen(*caption)+1);
703 ConcatenateMagickString(target,p,strlen(*caption)+2);
704 (void) DestroyString(*caption);
705 *caption=target;
706 p=(*caption)+n;
707 }
708 }
709 q=draw_info->text;
710 s=(char *) NULL;
711 }
712 n=0;
713 for (p=(*caption); GetUTFCode(p) != 0; p+=(ptrdiff_t) GetUTFOctets(p))
714 if (GetUTFCode(p) == '\n')
715 n++;
716 return(n);
717}
718␌
719/*
720%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
721% %
722% %
723% %
724% G e t M u l t i l i n e T y p e M e t r i c s %
725% %
726% %
727% %
728%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
729%
730% GetMultilineTypeMetrics() returns the following information for the
731% specified font and text:
732%
733% character width
734% character height
735% ascender
736% descender
737% text width
738% text height
739% maximum horizontal advance
740% bounds: x1
741% bounds: y1
742% bounds: x2
743% bounds: y2
744% origin: x
745% origin: y
746% underline position
747% underline thickness
748%
749% This method is like GetTypeMetrics() but it returns the maximum text width
750% and height for multiple lines of text.
751%
752% The format of the GetMultilineTypeMetrics method is:
753%
754% MagickBooleanType GetMultilineTypeMetrics(Image *image,
755% const DrawInfo *draw_info,TypeMetric *metrics,ExceptionInfo *exception)
756%
757% A description of each parameter follows:
758%
759% o image: the image.
760%
761% o draw_info: the draw info.
762%
763% o metrics: Return the font metrics in this structure.
764%
765% o exception: return any errors or warnings in this structure.
766%
767*/
768MagickExport MagickBooleanType GetMultilineTypeMetrics(Image *image,
769 const DrawInfo *draw_info,TypeMetric *metrics,ExceptionInfo *exception)
770{
771 char
772 **textlist;
773
774 double
775 height;
776
777 DrawInfo
778 *annotate_info;
779
780 MagickBooleanType
781 status;
782
783 MagickSizeType
784 size;
785
786 ssize_t
787 i;
788
789 size_t
790 count;
791
792 TypeMetric
793 extent;
794
795 assert(image != (Image *) NULL);
796 assert(image->signature == MagickCoreSignature);
797 if (IsEventLogging() != MagickFalse)
798 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
799 assert(draw_info != (DrawInfo *) NULL);
800 assert(draw_info->text != (char *) NULL);
801 assert(draw_info->signature == MagickCoreSignature);
802 if (*draw_info->text == '\0')
803 {
804 (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
805 "LabelExpected","`%s'",image->filename);
806 return(MagickFalse);
807 }
808 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
809 annotate_info->text=DestroyString(annotate_info->text);
810 /*
811 Convert newlines to multiple lines of text.
812 */
813 textlist=StringToStrings(draw_info->text,&count);
814 if (textlist == (char **) NULL)
815 {
816 annotate_info=DestroyDrawInfo(annotate_info);
817 return(MagickFalse);
818 }
819 annotate_info->render=MagickFalse;
820 annotate_info->direction=UndefinedDirection;
821 (void) memset(metrics,0,sizeof(*metrics));
822 (void) memset(&extent,0,sizeof(extent));
823 /*
824 Find the widest of the text lines.
825 */
826 annotate_info->text=textlist[0];
827 status=GetTypeMetrics(image,annotate_info,&extent,exception);
828 *metrics=extent;
829 height=(count*(size_t) (metrics->ascent-metrics->descent+
830 0.5)+(count-1)*draw_info->interline_spacing);
831 size=(MagickSizeType) fabs(height);
832 if (AcquireMagickResource(HeightResource,size) == MagickFalse)
833 {
834 (void) ThrowMagickException(exception,GetMagickModule(),ImageError,
835 "WidthOrHeightExceedsLimit","`%s'",image->filename);
836 status=MagickFalse;
837 }
838 else
839 {
840 for (i=1; i < (ssize_t) count; i++)
841 {
842 annotate_info->text=textlist[i];
843 status=GetTypeMetrics(image,annotate_info,&extent,exception);
844 if (status == MagickFalse)
845 break;
846 if (extent.width > metrics->width)
847 *metrics=extent;
848 size=(MagickSizeType) fabs(extent.width);
849 if (AcquireMagickResource(WidthResource,size) == MagickFalse)
850 {
851 (void) ThrowMagickException(exception,GetMagickModule(),ImageError,
852 "WidthOrHeightExceedsLimit","`%s'",image->filename);
853 status=MagickFalse;
854 break;
855 }
856 }
857 metrics->height=(double) height;
858 }
859 /*
860 Relinquish resources.
861 */
862 annotate_info->text=(char *) NULL;
863 annotate_info=DestroyDrawInfo(annotate_info);
864 for (i=0; i < (ssize_t) count; i++)
865 textlist[i]=DestroyString(textlist[i]);
866 textlist=(char **) RelinquishMagickMemory(textlist);
867 return(status);
868}
869␌
870/*
871%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
872% %
873% %
874% %
875% G e t T y p e M e t r i c s %
876% %
877% %
878% %
879%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
880%
881% GetTypeMetrics() returns the following information for the specified font
882% and text:
883%
884% character width
885% character height
886% ascender
887% descender
888% text width
889% text height
890% maximum horizontal advance
891% bounds: x1
892% bounds: y1
893% bounds: x2
894% bounds: y2
895% origin: x
896% origin: y
897% underline position
898% underline thickness
899%
900% The format of the GetTypeMetrics method is:
901%
902% MagickBooleanType GetTypeMetrics(Image *image,const DrawInfo *draw_info,
903% TypeMetric *metrics,ExceptionInfo *exception)
904%
905% A description of each parameter follows:
906%
907% o image: the image.
908%
909% o draw_info: the draw info.
910%
911% o metrics: Return the font metrics in this structure.
912%
913% o exception: return any errors or warnings in this structure.
914%
915*/
916MagickExport MagickBooleanType GetTypeMetrics(Image *image,
917 const DrawInfo *draw_info,TypeMetric *metrics,ExceptionInfo *exception)
918{
919 DrawInfo
920 *annotate_info;
921
922 MagickBooleanType
923 status;
924
925 PointInfo
926 offset;
927
928 assert(image != (Image *) NULL);
929 assert(image->signature == MagickCoreSignature);
930 if (IsEventLogging() != MagickFalse)
931 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
932 assert(draw_info != (DrawInfo *) NULL);
933 assert(draw_info->text != (char *) NULL);
934 assert(draw_info->signature == MagickCoreSignature);
935 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
936 annotate_info->render=MagickFalse;
937 annotate_info->direction=UndefinedDirection;
938 (void) memset(metrics,0,sizeof(*metrics));
939 offset.x=0.0;
940 offset.y=0.0;
941 status=RenderType(image,annotate_info,&offset,metrics,exception);
942 if (draw_info->debug != MagickFalse)
943 (void) LogMagickEvent(AnnotateEvent,GetMagickModule(),"Metrics: text: %s; "
944 "width: %g; height: %g; ascent: %g; descent: %g; max advance: %g; "
945 "bounds: %g,%g %g,%g; origin: %g,%g; pixels per em: %g,%g; "
946 "underline position: %g; underline thickness: %g",annotate_info->text,
947 metrics->width,metrics->height,metrics->ascent,metrics->descent,
948 metrics->max_advance,metrics->bounds.x1,metrics->bounds.y1,
949 metrics->bounds.x2,metrics->bounds.y2,metrics->origin.x,metrics->origin.y,
950 metrics->pixels_per_em.x,metrics->pixels_per_em.y,
951 metrics->underline_position,metrics->underline_thickness);
952 annotate_info=DestroyDrawInfo(annotate_info);
953 return(status);
954}
955␌
956/*
957%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
958% %
959% %
960% %
961+ R e n d e r T y p e %
962% %
963% %
964% %
965%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
966%
967% RenderType() renders text on the image. It also returns the bounding box of
968% the text relative to the image.
969%
970% The format of the RenderType method is:
971%
972% MagickBooleanType RenderType(Image *image,DrawInfo *draw_info,
973% const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
974%
975% A description of each parameter follows:
976%
977% o image: the image.
978%
979% o draw_info: the draw info.
980%
981% o offset: (x,y) location of text relative to image.
982%
983% o metrics: bounding box of text.
984%
985% o exception: return any errors or warnings in this structure.
986%
987*/
988static MagickBooleanType RenderType(Image *image,const DrawInfo *draw_info,
989 const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
990{
991 char
992 *font;
993
994 const TypeInfo
995 *type_info;
996
997 DrawInfo
998 *annotate_info;
999
1000 MagickBooleanType
1001 status;
1002
1003 type_info=(const TypeInfo *) NULL;
1004 if (draw_info->font != (char *) NULL)
1005 {
1006 if (*draw_info->font == '@')
1007 {
1008 status=RenderFreetype(image,draw_info,draw_info->encoding,offset,
1009 metrics,exception);
1010 return(status);
1011 }
1012 if (*draw_info->font == '-')
1013 return(RenderX11(image,draw_info,offset,metrics,exception));
1014 if (*draw_info->font == '^')
1015 return(RenderPostscript(image,draw_info,offset,metrics,exception));
1016 if (IsPathAccessible(draw_info->font) != MagickFalse)
1017 {
1018 status=RenderFreetype(image,draw_info,draw_info->encoding,offset,
1019 metrics,exception);
1020 return(status);
1021 }
1022 type_info=GetTypeInfo(draw_info->font,exception);
1023 if (type_info == (const TypeInfo *) NULL)
1024 (void) ThrowMagickException(exception,GetMagickModule(),TypeWarning,
1025 "UnableToReadFont","`%s'",draw_info->font);
1026 }
1027 if ((type_info == (const TypeInfo *) NULL) &&
1028 (draw_info->family != (const char *) NULL))
1029 {
1030 if (strpbrk(draw_info->family,",'\"") == (char *) NULL)
1031 type_info=GetTypeInfoByFamily(draw_info->family,draw_info->style,
1032 draw_info->stretch,draw_info->weight,exception);
1033 if (type_info == (const TypeInfo *) NULL)
1034 {
1035 char
1036 **family;
1037
1038 int
1039 number_families;
1040
1041 ssize_t
1042 i;
1043
1044 /*
1045 Parse font family list.
1046 */
1047 family=StringToArgv(draw_info->family,&number_families);
1048 for (i=1; i < (ssize_t) number_families; i++)
1049 {
1050 (void) SubstituteString(&family[i],",","");
1051 type_info=GetTypeInfoByFamily(family[i],draw_info->style,
1052 draw_info->stretch,draw_info->weight,exception);
1053 if ((type_info != (const TypeInfo *) NULL) &&
1054 (LocaleCompare(family[i],type_info->family) == 0))
1055 break;
1056 }
1057 for (i=0; i < (ssize_t) number_families; i++)
1058 family[i]=DestroyString(family[i]);
1059 family=(char **) RelinquishMagickMemory(family);
1060 if (type_info == (const TypeInfo *) NULL)
1061 (void) ThrowMagickException(exception,GetMagickModule(),TypeWarning,
1062 "UnableToReadFont","`%s'",draw_info->family);
1063 }
1064 }
1065 font=GetPolicyValue("system:font");
1066 if (font != (char *) NULL)
1067 {
1068 if (IsPathAccessible(font) != MagickFalse)
1069 {
1070 /*
1071 Render with default system font.
1072 */
1073 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1074 annotate_info->font=font;
1075 status=RenderFreetype(image,annotate_info,annotate_info->encoding,
1076 offset,metrics,exception);
1077 annotate_info=DestroyDrawInfo(annotate_info);
1078 return(status);
1079 }
1080 font=DestroyString(font);
1081 }
1082 if (type_info == (const TypeInfo *) NULL)
1083 {
1084 ExceptionInfo
1085 *sans_exception;
1086
1087 /*
1088 Search for a default font.
1089 */
1090 sans_exception=AcquireExceptionInfo();
1091 if (type_info == (const TypeInfo *) NULL)
1092 type_info=GetTypeInfoByFamily((const char *) NULL,draw_info->style,
1093 draw_info->stretch,draw_info->weight,sans_exception);
1094 if (type_info == (const TypeInfo *) NULL)
1095 type_info=GetTypeInfo("*",sans_exception);
1096 sans_exception=DestroyExceptionInfo(sans_exception);
1097 }
1098 if (type_info == (const TypeInfo *) NULL)
1099 {
1100 status=RenderFreetype(image,draw_info,draw_info->encoding,offset,metrics,
1101 exception);
1102 return(status);
1103 }
1104 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1105 annotate_info->face=type_info->face;
1106 if (type_info->metrics != (char *) NULL)
1107 (void) CloneString(&annotate_info->metrics,type_info->metrics);
1108 if (type_info->glyphs != (char *) NULL)
1109 (void) CloneString(&annotate_info->font,type_info->glyphs);
1110 status=RenderFreetype(image,annotate_info,type_info->encoding,offset,metrics,
1111 exception);
1112 annotate_info=DestroyDrawInfo(annotate_info);
1113 return(status);
1114}
1115␌
1116/*
1117%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1118% %
1119% %
1120% %
1121+ R e n d e r F r e e t y p e %
1122% %
1123% %
1124% %
1125%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1126%
1127% RenderFreetype() renders text on the image with a Truetype font. It also
1128% returns the bounding box of the text relative to the image.
1129%
1130% The format of the RenderFreetype method is:
1131%
1132% MagickBooleanType RenderFreetype(Image *image,DrawInfo *draw_info,
1133% const char *encoding,const PointInfo *offset,TypeMetric *metrics,
1134% ExceptionInfo *exception)
1135%
1136% A description of each parameter follows:
1137%
1138% o image: the image.
1139%
1140% o draw_info: the draw info.
1141%
1142% o encoding: the font encoding.
1143%
1144% o offset: (x,y) location of text relative to image.
1145%
1146% o metrics: bounding box of text.
1147%
1148% o exception: return any errors or warnings in this structure.
1149%
1150*/
1151
1152#if defined(MAGICKCORE_FREETYPE_DELEGATE)
1153
1154#if defined(MAGICKCORE_RAQM_DELEGATE)
1155static size_t ComplexRaqmTextLayout(const Image *image,
1156 const DrawInfo *draw_info,const char *text,const size_t length,
1157 const FT_Face face,GraphemeInfo **grapheme,ExceptionInfo *exception)
1158{
1159 const char
1160 *features;
1161
1162 raqm_t
1163 *rq;
1164
1165 raqm_glyph_t
1166 *glyphs;
1167
1168 size_t
1169 extent;
1170
1171 ssize_t
1172 i;
1173
1174 extent=0;
1175 rq=raqm_create();
1176 if (rq == (raqm_t *) NULL)
1177 goto cleanup;
1178 if (raqm_set_text_utf8(rq,text,length) == 0)
1179 goto cleanup;
1180 if (raqm_set_par_direction(rq,(raqm_direction_t) draw_info->direction) == 0)
1181 goto cleanup;
1182 if (raqm_set_freetype_face(rq,face) == 0)
1183 goto cleanup;
1184 features=GetImageProperty(image,"type:features",exception);
1185 if (features != (const char *) NULL)
1186 {
1187 char
1188 breaker,
1189 quote,
1190 *token;
1191
1192 int
1193 next,
1194 status_token;
1195
1196 TokenInfo
1197 *token_info;
1198
1199 next=0;
1200 token_info=AcquireTokenInfo();
1201 token=AcquireString("");
1202 status_token=Tokenizer(token_info,0,token,50,features,"",",","",'\0',
1203 &breaker,&next,&quote);
1204 while (status_token == 0)
1205 {
1206 raqm_add_font_feature(rq,token,(int) strlen(token));
1207 status_token=Tokenizer(token_info,0,token,50,features,"",",","",'\0',
1208 &breaker,&next,&quote);
1209 }
1210 token_info=DestroyTokenInfo(token_info);
1211 token=DestroyString(token);
1212 }
1213 if (raqm_layout(rq) == 0)
1214 goto cleanup;
1215 glyphs=raqm_get_glyphs(rq,&extent);
1216 if (glyphs == (raqm_glyph_t *) NULL)
1217 {
1218 extent=0;
1219 goto cleanup;
1220 }
1221 *grapheme=(GraphemeInfo *) AcquireQuantumMemory(extent,sizeof(**grapheme));
1222 if (*grapheme == (GraphemeInfo *) NULL)
1223 {
1224 extent=0;
1225 goto cleanup;
1226 }
1227 for (i=0; i < (ssize_t) extent; i++)
1228 {
1229 (*grapheme)[i].index=glyphs[i].index;
1230 (*grapheme)[i].x_offset=glyphs[i].x_offset;
1231 (*grapheme)[i].x_advance=glyphs[i].x_advance;
1232 (*grapheme)[i].y_offset=glyphs[i].y_offset;
1233 (*grapheme)[i].y_advance=glyphs[i].y_advance;
1234 (*grapheme)[i].cluster=glyphs[i].cluster;
1235 }
1236
1237cleanup:
1238 raqm_destroy(rq);
1239 return(extent);
1240#else
1241static size_t ComplexTextLayout(const DrawInfo *draw_info,const char *text,
1242 const size_t length,const FT_Face face,const FT_Int32 flags,
1243 GraphemeInfo **grapheme)
1244{
1245 const char
1246 *p;
1247
1248 ssize_t
1249 i;
1250
1251 ssize_t
1252 last_glyph;
1253
1254 /*
1255 Simple layout for bi-directional text (right-to-left or left-to-right).
1256 */
1257 *grapheme=(GraphemeInfo *) AcquireQuantumMemory(length+1,sizeof(**grapheme));
1258 if (*grapheme == (GraphemeInfo *) NULL)
1259 return(0);
1260 last_glyph=0;
1261 p=text;
1262 for (i=0; GetUTFCode(p) != 0; p+=(ptrdiff_t) GetUTFOctets(p), i++)
1263 {
1264 (*grapheme)[i].index=(ssize_t) FT_Get_Char_Index(face,(FT_ULong)
1265 GetUTFCode(p));
1266 (*grapheme)[i].x_offset=0;
1267 (*grapheme)[i].y_offset=0;
1268 if (((*grapheme)[i].index != 0) && (last_glyph != 0))
1269 {
1270 if (FT_HAS_KERNING(face))
1271 {
1272 FT_Error
1273 ft_status;
1274
1275 FT_Vector
1276 kerning;
1277
1278 ft_status=FT_Get_Kerning(face,(FT_UInt) last_glyph,(FT_UInt)
1279 (*grapheme)[i].index,ft_kerning_default,&kerning);
1280 if (ft_status == 0)
1281 (*grapheme)[i-1].x_advance+=(FT_Pos) ((draw_info->direction ==
1282 RightToLeftDirection ? -1.0 : 1.0)*kerning.x);
1283 }
1284 }
1285 (void) FT_Load_Glyph(face,(FT_UInt) (*grapheme)[i].index,flags);
1286 (*grapheme)[i].x_advance=face->glyph->advance.x;
1287 (*grapheme)[i].y_advance=face->glyph->advance.y;
1288 (*grapheme)[i].cluster=(size_t) (p-text);
1289 last_glyph=(*grapheme)[i].index;
1290 }
1291 return((size_t) i);
1292#endif
1293}
1294
1295static void FreetypeCloseStream(FT_Stream stream)
1296{
1297 FILE
1298 *file;
1299
1300 file=(FILE *) stream->descriptor.pointer;
1301 if (file != (FILE *) NULL)
1302 (void) fclose(file);
1303 stream->descriptor.pointer=NULL;
1304}
1305
1306static unsigned long FreetypeReadStream(FT_Stream stream,unsigned long offset,
1307 unsigned char *buffer,unsigned long count)
1308{
1309 FILE
1310 *file;
1311
1312 unsigned long
1313 result;
1314
1315 file=(FILE *) stream->descriptor.pointer;
1316 if (file == (FILE *) NULL)
1317 return(0);
1318 if (offset > stream->size)
1319 result=1;
1320 else
1321 result=(unsigned long) fseek(file,(off_t) offset,SEEK_SET);
1322 if (count == 0) /* seek operation */
1323 return(result);
1324 if (result != 0)
1325 return(0);
1326 return((unsigned long) fread(buffer,1,count,file));
1327}
1328
1329static inline MagickBooleanType IsEmptyOutline(FT_Outline outline)
1330{
1331 return((outline.n_points == 0) || (outline.n_contours <= 0) ? MagickTrue :
1332 MagickFalse);
1333}
1334
1335static int TraceCubicBezier(FT_Vector *p,FT_Vector *q,FT_Vector *to,
1336 DrawInfo *draw_info)
1337{
1338 AffineMatrix
1339 affine;
1340
1341 char
1342 path[MagickPathExtent];
1343
1344 affine=draw_info->affine;
1345 (void) FormatLocaleString(path,MagickPathExtent,"C%g,%g %g,%g %g,%g",
1346 affine.tx+p->x/64.0,affine.ty-p->y/64.0,affine.tx+q->x/64.0,affine.ty-
1347 q->y/64.0,affine.tx+to->x/64.0,affine.ty-to->y/64.0);
1348 (void) ConcatenateString(&draw_info->primitive,path);
1349 return(0);
1350}
1351
1352static int TraceLineTo(FT_Vector *to,DrawInfo *draw_info)
1353{
1354 AffineMatrix
1355 affine;
1356
1357 char
1358 path[MagickPathExtent];
1359
1360 affine=draw_info->affine;
1361 (void) FormatLocaleString(path,MagickPathExtent,"L%g,%g",affine.tx+to->x/64.0,
1362 affine.ty-to->y/64.0);
1363 (void) ConcatenateString(&draw_info->primitive,path);
1364 return(0);
1365}
1366
1367static int TraceMoveTo(FT_Vector *to,DrawInfo *draw_info)
1368{
1369 AffineMatrix
1370 affine;
1371
1372 char
1373 path[MagickPathExtent];
1374
1375 affine=draw_info->affine;
1376 (void) FormatLocaleString(path,MagickPathExtent,"M%g,%g",affine.tx+to->x/64.0,
1377 affine.ty-to->y/64.0);
1378 (void) ConcatenateString(&draw_info->primitive,path);
1379 return(0);
1380}
1381
1382static int TraceQuadraticBezier(FT_Vector *control,FT_Vector *to,
1383 DrawInfo *draw_info)
1384{
1385 AffineMatrix
1386 affine;
1387
1388 char
1389 path[MagickPathExtent];
1390
1391 affine=draw_info->affine;
1392 (void) FormatLocaleString(path,MagickPathExtent,"Q%g,%g %g,%g",affine.tx+
1393 control->x/64.0,affine.ty-control->y/64.0,affine.tx+to->x/64.0,affine.ty-
1394 to->y/64.0);
1395 (void) ConcatenateString(&draw_info->primitive,path);
1396 return(0);
1397}
1398
1399#if FREETYPE_MAJOR == 2 && FREETYPE_MINOR >= 10
1400static inline const char *FreetypeErrorMessage(FT_Error ft_status)
1401{
1402 return(FT_Error_String(ft_status));
1403#else
1404static inline const char *FreetypeErrorMessage(
1405 FT_Error magick_unused(ft_status))
1406{
1407 magick_unreferenced(ft_status);
1408 return((const char *) NULL);
1409#endif
1410}
1411
1412static void *FreetypeAlloc(FT_Memory magick_unused(memory),long size)
1413{
1414 magick_unreferenced(memory);
1415 if (size < 0)
1416 return((void *) NULL);
1417 if ((size_t) size > GetMaxMemoryRequest())
1418 return((void *) NULL);
1419 return(AcquireMagickMemory((size_t) size));
1420}
1421
1422static void *FreetypeRealloc(FT_Memory magick_unused(memory),
1423 long magick_unused(cur_size),long size,void *block)
1424{
1425 magick_unreferenced(memory);
1426 magick_unreferenced(cur_size);
1427 if (size < 0)
1428 return((void *) NULL);
1429 if ((size_t) size > GetMaxMemoryRequest())
1430 return((void *) NULL);
1431 return(ResizeMagickMemory(block,(size_t) size));
1432}
1433
1434static void FreetypeFree(FT_Memory magick_unused(memory),void *block)
1435{
1436 magick_unreferenced(memory);
1437 (void) RelinquishMagickMemory(block);
1438}
1439
1440static FT_Memory FreetypeAcquireMemoryManager(void)
1441{
1442 FT_Memory
1443 memory;
1444
1445 memory=(FT_Memory) AcquireMagickMemory(sizeof(*memory));
1446 if (memory == (FT_Memory) NULL)
1447 return(memory);
1448 memset(memory,0,sizeof(*memory));
1449 memory->alloc=(&FreetypeAlloc);
1450 memory->realloc=(&FreetypeRealloc);
1451 memory->free=(&FreetypeFree);
1452 return(memory);
1453}
1454
1455static void FreetypeDone(FT_Memory memory,FT_Library library,
1456 FT_StreamRec *stream)
1457{
1458 (void) FT_Done_Library(library);
1459 stream=(FT_StreamRec *) RelinquishMagickMemory(stream);
1460 memory=(FT_Memory) RelinquishMagickMemory(memory);
1461}
1462
1463static FT_Error FreetypeInit(FT_Memory memory,FT_Library *alibrary)
1464{
1465 FT_Error
1466 ft_status;
1467
1468 ft_status=FT_New_Library(memory,alibrary);
1469 if (ft_status != 0)
1470 RelinquishMagickMemory(memory);
1471 else
1472 FT_Add_Default_Modules(*alibrary);
1473 FT_Set_Default_Properties(*alibrary);
1474 return(ft_status);
1475}
1476
1477static MagickBooleanType RenderFreetype(Image *image,const DrawInfo *draw_info,
1478 const char *encoding,const PointInfo *offset,TypeMetric *metrics,
1479 ExceptionInfo *exception)
1480{
1481#if !defined(FT_OPEN_PATHNAME)
1482#define FT_OPEN_PATHNAME ft_open_pathname
1483#endif
1484
1485#define ThrowFreetypeErrorException(tag,ft_status,value) \
1486{ \
1487 const char \
1488 *error_string=FreetypeErrorMessage(ft_status); \
1489 if (error_string != (const char *) NULL) \
1490 (void) ThrowMagickException(exception,GetMagickModule(),TypeError, \
1491 tag,"`%s (%s)'",value, error_string); \
1492 else \
1493 (void) ThrowMagickException(exception,GetMagickModule(),TypeError, \
1494 tag,"`%s'",value); \
1495}
1496
1497 typedef struct _GlyphInfo
1498 {
1499 FT_UInt
1500 id;
1501
1502 FT_Vector
1503 origin;
1504
1505 FT_Glyph
1506 image;
1507 } GlyphInfo;
1508
1509 char
1510 *p;
1511
1512 const char
1513 *value;
1514
1515 DrawInfo
1516 *annotate_info;
1517
1518 FT_BBox
1519 bounds;
1520
1521 FT_BitmapGlyph
1522 bitmap;
1523
1524 FT_Encoding
1525 encoding_type;
1526
1527 FT_Error
1528 ft_status;
1529
1530 FT_Face
1531 face;
1532
1533 FT_Int32
1534 flags;
1535
1536 FT_Library
1537 library;
1538
1539 FT_Long
1540 face_index;
1541
1542 FT_Matrix
1543 affine;
1544
1545 FT_Memory
1546 memory;
1547
1548 FT_Open_Args
1549 args;
1550
1551 FT_StreamRec
1552 *stream;
1553
1554 FT_UInt
1555 first_glyph_id,
1556 last_glyph_id,
1557 missing_glyph_id;
1558
1559 FT_Vector
1560 origin;
1561
1562 GlyphInfo
1563 glyph;
1564
1565 GraphemeInfo
1566 *grapheme;
1567
1568 MagickBooleanType
1569 status;
1570
1571 PointInfo
1572 point,
1573 resolution;
1574
1575 ssize_t
1576 i;
1577
1578 size_t
1579 length;
1580
1581 ssize_t
1582 code,
1583 last_character,
1584 y;
1585
1586 static FT_Outline_Funcs
1587 OutlineMethods =
1588 {
1589 (FT_Outline_MoveTo_Func) TraceMoveTo,
1590 (FT_Outline_LineTo_Func) TraceLineTo,
1591 (FT_Outline_ConicTo_Func) TraceQuadraticBezier,
1592 (FT_Outline_CubicTo_Func) TraceCubicBezier,
1593 0, 0
1594 };
1595
1596 struct stat
1597 attributes;
1598
1599 unsigned char
1600 *utf8;
1601
1602 /*
1603 Initialize Truetype library.
1604 */
1605 memory=FreetypeAcquireMemoryManager();
1606 if (memory == (FT_Memory) NULL)
1607 ThrowBinaryException(ResourceLimitError,"UnableToInitializeFreetypeLibrary",
1608 image->filename);
1609 ft_status=FreetypeInit(memory,&library);
1610 if (ft_status != 0)
1611 ThrowFreetypeErrorException("UnableToInitializeFreetypeLibrary",ft_status,
1612 image->filename);
1613 /*
1614 Open font face.
1615 */
1616 face_index=(FT_Long) draw_info->face;
1617 (void) memset(&args,0,sizeof(args));
1618 if (draw_info->font == (char *) NULL)
1619 {
1620 const TypeInfo *type_info = GetTypeInfo("*",exception);
1621 if (type_info != (const TypeInfo *) NULL)
1622 args.pathname=ConstantString(type_info->glyphs);
1623 }
1624 else
1625 if (*draw_info->font != '@')
1626 args.pathname=ConstantString(draw_info->font);
1627 else
1628 {
1629 /*
1630 Extract face index, e.g. @msgothic[1].
1631 */
1632 ImageInfo *image_info = AcquireImageInfo();
1633 (void) CopyMagickString(image_info->filename,draw_info->font+1,
1634 MagickPathExtent);
1635 (void) SetImageInfo(image_info,0,exception);
1636 face_index=(FT_Long) image_info->scene;
1637 args.pathname=ConstantString(image_info->filename);
1638 image_info=DestroyImageInfo(image_info);
1639 }
1640 /*
1641 Configure streaming interface.
1642 */
1643 stream=(FT_StreamRec *) AcquireCriticalMemory(sizeof(*stream));
1644 (void) memset(stream,0,sizeof(*stream));
1645 if (stat(args.pathname,&attributes) == 0)
1646 stream->size=attributes.st_size >= 0 ? (unsigned long)
1647 attributes.st_size : 0;
1648 stream->descriptor.pointer=fopen_utf8(args.pathname,"rb");
1649 stream->read=(&FreetypeReadStream);
1650 stream->close=(&FreetypeCloseStream);
1651 args.flags=FT_OPEN_STREAM;
1652 args.stream=stream;
1653 face=(FT_Face) NULL;
1654 ft_status=FT_Open_Face(library,&args,face_index,&face);
1655 if (ft_status != 0)
1656 {
1657 FreetypeDone(memory,library,stream);
1658 ThrowFreetypeErrorException("UnableToReadFont",ft_status,args.pathname);
1659 args.pathname=DestroyString(args.pathname);
1660 return(MagickFalse);
1661 }
1662 args.pathname=DestroyString(args.pathname);
1663 if ((draw_info->metrics != (char *) NULL) &&
1664 (IsPathAccessible(draw_info->metrics) != MagickFalse))
1665 (void) FT_Attach_File(face,draw_info->metrics);
1666 encoding_type=FT_ENCODING_UNICODE;
1667 ft_status=FT_Select_Charmap(face,encoding_type);
1668 if ((ft_status != 0) && (face->num_charmaps != 0))
1669 ft_status=FT_Set_Charmap(face,face->charmaps[0]);
1670 if (encoding != (const char *) NULL)
1671 {
1672 if (LocaleCompare(encoding,"AdobeCustom") == 0)
1673 encoding_type=FT_ENCODING_ADOBE_CUSTOM;
1674 if (LocaleCompare(encoding,"AdobeExpert") == 0)
1675 encoding_type=FT_ENCODING_ADOBE_EXPERT;
1676 if (LocaleCompare(encoding,"AdobeStandard") == 0)
1677 encoding_type=FT_ENCODING_ADOBE_STANDARD;
1678 if (LocaleCompare(encoding,"AppleRoman") == 0)
1679 encoding_type=FT_ENCODING_APPLE_ROMAN;
1680 if (LocaleCompare(encoding,"BIG5") == 0)
1681 encoding_type=FT_ENCODING_BIG5;
1682#if defined(FT_ENCODING_PRC)
1683 if (LocaleCompare(encoding,"GB2312") == 0)
1684 encoding_type=FT_ENCODING_PRC;
1685#endif
1686#if defined(FT_ENCODING_JOHAB)
1687 if (LocaleCompare(encoding,"Johab") == 0)
1688 encoding_type=FT_ENCODING_JOHAB;
1689#endif
1690#if defined(FT_ENCODING_ADOBE_LATIN_1)
1691 if (LocaleCompare(encoding,"Latin-1") == 0)
1692 encoding_type=FT_ENCODING_ADOBE_LATIN_1;
1693#endif
1694#if defined(FT_ENCODING_ADOBE_LATIN_2)
1695 if (LocaleCompare(encoding,"Latin-2") == 0)
1696 encoding_type=FT_ENCODING_OLD_LATIN_2;
1697#endif
1698 if (LocaleCompare(encoding,"None") == 0)
1699 encoding_type=FT_ENCODING_NONE;
1700 if (LocaleCompare(encoding,"SJIScode") == 0)
1701 encoding_type=FT_ENCODING_SJIS;
1702 if (LocaleCompare(encoding,"Symbol") == 0)
1703 encoding_type=FT_ENCODING_MS_SYMBOL;
1704 if (LocaleCompare(encoding,"Unicode") == 0)
1705 encoding_type=FT_ENCODING_UNICODE;
1706 if (LocaleCompare(encoding,"Wansung") == 0)
1707 encoding_type=FT_ENCODING_WANSUNG;
1708 ft_status=FT_Select_Charmap(face,encoding_type);
1709 if (ft_status != 0)
1710 {
1711 (void) FT_Done_Face(face);
1712 FreetypeDone(memory,library,stream);
1713 ThrowFreetypeErrorException("UnrecognizedFontEncoding",ft_status,
1714 encoding);
1715 return(MagickFalse);
1716 }
1717 }
1718 /*
1719 Set text size.
1720 */
1721 resolution.x=DefaultResolution;
1722 resolution.y=DefaultResolution;
1723 if (draw_info->density != (char *) NULL)
1724 {
1725 GeometryInfo
1726 geometry_info;
1727
1728 MagickStatusType
1729 geometry_flags;
1730
1731 geometry_flags=ParseGeometry(draw_info->density,&geometry_info);
1732 if ((geometry_flags & RhoValue) != 0)
1733 resolution.x=geometry_info.rho;
1734 resolution.y=resolution.x;
1735 if ((geometry_flags & SigmaValue) != 0)
1736 resolution.y=geometry_info.sigma;
1737 }
1738 ft_status=FT_Set_Char_Size(face,(FT_F26Dot6) (64.0*draw_info->pointsize),
1739 (FT_F26Dot6) (64.0*draw_info->pointsize),(FT_UInt) resolution.x,
1740 (FT_UInt) resolution.y);
1741 if (ft_status != 0)
1742 {
1743 (void) FT_Done_Face(face);
1744 FreetypeDone(memory,library,stream);
1745 ThrowFreetypeErrorException("UnableToReadFont",ft_status,
1746 draw_info->font);
1747 return(MagickFalse);
1748 }
1749 metrics->pixels_per_em.x=face->size->metrics.x_ppem;
1750 metrics->pixels_per_em.y=face->size->metrics.y_ppem;
1751 metrics->ascent=(double) face->size->metrics.ascender/64.0;
1752 metrics->descent=(double) face->size->metrics.descender/64.0;
1753 if (face->size->metrics.ascender == 0)
1754 {
1755 /*
1756 Sanitize buggy ascender and descender values.
1757 */
1758 metrics->ascent=face->size->metrics.y_ppem;
1759 if (face->size->metrics.descender == 0)
1760 metrics->descent=face->size->metrics.y_ppem/-3.5;
1761 }
1762 metrics->width=0;
1763 metrics->origin.x=0;
1764 metrics->origin.y=0;
1765 metrics->height=(double) face->size->metrics.height/64.0;
1766 metrics->max_advance=0.0;
1767 if (face->size->metrics.max_advance > MagickEpsilon)
1768 metrics->max_advance=(double) face->size->metrics.max_advance/64.0;
1769 metrics->bounds.x1=0.0;
1770 metrics->bounds.y1=metrics->descent;
1771 metrics->bounds.x2=metrics->ascent+metrics->descent;
1772 metrics->bounds.y2=metrics->ascent+metrics->descent;
1773 metrics->underline_position=face->underline_position*
1774 (metrics->pixels_per_em.x*PerceptibleReciprocal(face->units_per_EM));
1775 metrics->underline_thickness=face->underline_thickness*
1776 (metrics->pixels_per_em.x*PerceptibleReciprocal(face->units_per_EM));
1777 first_glyph_id=0;
1778 FT_Get_First_Char(face,&first_glyph_id);
1779 if ((draw_info->text == (char *) NULL) || (*draw_info->text == '\0') ||
1780 (first_glyph_id == 0))
1781 {
1782 (void) FT_Done_Face(face);
1783 FreetypeDone(memory,library,stream);
1784 return(MagickTrue);
1785 }
1786 /*
1787 Compute bounding box.
1788 */
1789 if (draw_info->debug != MagickFalse)
1790 (void) LogMagickEvent(AnnotateEvent,GetMagickModule(),"Font %s; "
1791 "font-encoding %s; text-encoding %s; pointsize %g",
1792 draw_info->font != (char *) NULL ? draw_info->font : "none",
1793 encoding != (char *) NULL ? encoding : "none",
1794 draw_info->encoding != (char *) NULL ? draw_info->encoding : "none",
1795 draw_info->pointsize);
1796 flags=FT_LOAD_DEFAULT;
1797 if (draw_info->render == MagickFalse)
1798 flags=FT_LOAD_NO_BITMAP;
1799 if (draw_info->text_antialias == MagickFalse)
1800 flags|=FT_LOAD_TARGET_MONO;
1801 else
1802 {
1803#if defined(FT_LOAD_TARGET_LIGHT)
1804 flags|=FT_LOAD_TARGET_LIGHT;
1805#elif defined(FT_LOAD_TARGET_LCD)
1806 flags|=FT_LOAD_TARGET_LCD;
1807#endif
1808 }
1809 value=GetImageProperty(image,"type:hinting",exception);
1810 if ((value != (const char *) NULL) && (LocaleCompare(value,"off") == 0))
1811 flags|=FT_LOAD_NO_HINTING;
1812 glyph.id=0;
1813 glyph.image=(FT_Glyph) NULL;
1814 last_glyph_id=0;
1815 origin.x=0;
1816 origin.y=0;
1817 affine.xx=65536L;
1818 affine.yx=0L;
1819 affine.xy=0L;
1820 affine.yy=65536L;
1821 if (draw_info->render != MagickFalse)
1822 {
1823 affine.xx=(FT_Fixed) (65536L*draw_info->affine.sx+0.5);
1824 affine.yx=(FT_Fixed) (-65536L*draw_info->affine.rx+0.5);
1825 affine.xy=(FT_Fixed) (-65536L*draw_info->affine.ry+0.5);
1826 affine.yy=(FT_Fixed) (65536L*draw_info->affine.sy+0.5);
1827 }
1828 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1829 if (annotate_info->dash_pattern != (double *) NULL)
1830 annotate_info->dash_pattern[0]=0.0;
1831 (void) CloneString(&annotate_info->primitive,"path '");
1832 status=MagickTrue;
1833 if (draw_info->render != MagickFalse)
1834 {
1835 if (image->storage_class != DirectClass)
1836 (void) SetImageStorageClass(image,DirectClass,exception);
1837 if ((image->alpha_trait & BlendPixelTrait) == 0)
1838 (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
1839 }
1840 for (p=draw_info->text; GetUTFCode(p) != 0; p+=(ptrdiff_t) GetUTFOctets(p))
1841 if (GetUTFCode(p) < 0)
1842 break;
1843 utf8=(unsigned char *) NULL;
1844 if (GetUTFCode(p) == 0)
1845 p=draw_info->text;
1846 else
1847 {
1848 utf8=ConvertLatin1ToUTF8((unsigned char *) draw_info->text);
1849 if (utf8 != (unsigned char *) NULL)
1850 p=(char *) utf8;
1851 }
1852 grapheme=(GraphemeInfo *) NULL;
1853#if defined(MAGICKCORE_RAQM_DELEGATE)
1854 length=ComplexRaqmTextLayout(image,draw_info,p,strlen(p),face,&grapheme,
1855 exception);
1856#else
1857 length=ComplexTextLayout(draw_info,p,strlen(p),face,flags,&grapheme);
1858#endif
1859 missing_glyph_id=FT_Get_Char_Index(face,' ');
1860 code=0;
1861 last_character=(ssize_t) length-1;
1862 for (i=0; i < (ssize_t) length; i++)
1863 {
1864 FT_Outline
1865 outline;
1866
1867 /*
1868 Render UTF-8 sequence.
1869 */
1870 glyph.id=(FT_UInt) grapheme[i].index;
1871 if (glyph.id == 0)
1872 glyph.id=missing_glyph_id;
1873 if ((glyph.id != 0) && (last_glyph_id != 0))
1874 origin.x+=(FT_Pos) (64.0*draw_info->kerning);
1875 glyph.origin=origin;
1876 glyph.origin.x+=(FT_Pos) grapheme[i].x_offset;
1877 glyph.origin.y+=(FT_Pos) grapheme[i].y_offset;
1878 if (glyph.image != (FT_Glyph) NULL)
1879 {
1880 FT_Done_Glyph(glyph.image);
1881 glyph.image=(FT_Glyph) NULL;
1882 }
1883 ft_status=FT_Load_Glyph(face,glyph.id,flags);
1884 if (ft_status != 0)
1885 continue;
1886 ft_status=FT_Get_Glyph(face->glyph,&glyph.image);
1887 if (ft_status != 0)
1888 continue;
1889 outline=((FT_OutlineGlyph) glyph.image)->outline;
1890 if ((glyph.image->format != FT_GLYPH_FORMAT_OUTLINE) &&
1891 (IsEmptyOutline(outline) == MagickFalse))
1892 continue;
1893 ft_status=FT_Outline_Get_BBox(&outline,&bounds);
1894 if (ft_status != 0)
1895 continue;
1896 if ((bounds.xMin < metrics->bounds.x1) && (bounds.xMin != 0))
1897 metrics->bounds.x1=(double) bounds.xMin;
1898 if ((bounds.yMin < metrics->bounds.y1) && (bounds.yMin != 0))
1899 metrics->bounds.y1=(double) bounds.yMin;
1900 if ((bounds.xMax > metrics->bounds.x2) && (bounds.xMax != 0))
1901 metrics->bounds.x2=(double) bounds.xMax;
1902 if ((bounds.yMax > metrics->bounds.y2) && (bounds.yMax != 0))
1903 metrics->bounds.y2=(double) bounds.yMax;
1904 if (((draw_info->stroke.alpha != (MagickRealType) TransparentAlpha) ||
1905 (draw_info->stroke_pattern != (Image *) NULL)) &&
1906 ((status != MagickFalse) && (draw_info->render != MagickFalse)))
1907 {
1908 /*
1909 Trace the glyph.
1910 */
1911 annotate_info->affine.tx=glyph.origin.x/64.0;
1912 annotate_info->affine.ty=(-glyph.origin.y/64.0);
1913 if (IsEmptyOutline(outline) == MagickFalse)
1914 ft_status=FT_Outline_Decompose(&outline,&OutlineMethods,
1915 annotate_info);
1916 }
1917 FT_Vector_Transform(&glyph.origin,&affine);
1918 (void) FT_Glyph_Transform(glyph.image,&affine,&glyph.origin);
1919 ft_status=FT_Glyph_To_Bitmap(&glyph.image,FT_RENDER_MODE_NORMAL,
1920 (FT_Vector *) NULL,MagickTrue);
1921 if (ft_status != 0)
1922 continue;
1923 bitmap=(FT_BitmapGlyph) glyph.image;
1924 point.x=offset->x+bitmap->left;
1925 if (bitmap->bitmap.pixel_mode == ft_pixel_mode_mono)
1926 point.x+=(origin.x/64.0);
1927 point.y=offset->y-bitmap->top;
1928 if (draw_info->render != MagickFalse)
1929 {
1930 CacheView
1931 *image_view;
1932
1933 MagickBooleanType
1934 transparent_fill;
1935
1936 unsigned char
1937 *r;
1938
1939 /*
1940 Rasterize the glyph.
1941 */
1942 transparent_fill=((draw_info->fill.alpha == (MagickRealType) TransparentAlpha) &&
1943 (draw_info->fill_pattern == (Image *) NULL) &&
1944 (draw_info->stroke.alpha == (MagickRealType) TransparentAlpha) &&
1945 (draw_info->stroke_pattern == (Image *) NULL)) ? MagickTrue :
1946 MagickFalse;
1947 r=bitmap->bitmap.buffer;
1948 image_view=AcquireAuthenticCacheView(image,exception);
1949#if defined(MAGICKCORE_OPENMP_SUPPORT)
1950 #pragma omp parallel for schedule(static) shared(status) \
1951 magick_number_threads(image,image,bitmap->bitmap.rows,4)
1952#endif
1953 for (y=0; y < (ssize_t) bitmap->bitmap.rows; y++)
1954 {
1955 double
1956 fill_opacity;
1957
1958 MagickBooleanType
1959 active,
1960 sync;
1961
1962 PixelInfo
1963 fill_color;
1964
1965 Quantum
1966 *magick_restrict q;
1967
1968 ssize_t
1969 x;
1970
1971 ssize_t
1972 n,
1973 x_offset,
1974 y_offset;
1975
1976 if (status == MagickFalse)
1977 continue;
1978 x_offset=CastDoubleToLong(ceil(point.x-0.5));
1979 y_offset=CastDoubleToLong(ceil(point.y+y-0.5));
1980 if ((y_offset < 0) || (y_offset >= (ssize_t) image->rows))
1981 continue;
1982 q=(Quantum *) NULL;
1983 if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns))
1984 active=MagickFalse;
1985 else
1986 {
1987 q=GetCacheViewAuthenticPixels(image_view,x_offset,y_offset,
1988 bitmap->bitmap.width,1,exception);
1989 active=q != (Quantum *) NULL ? MagickTrue : MagickFalse;
1990 }
1991 n=y*bitmap->bitmap.pitch;
1992 for (x=0; x < (ssize_t) bitmap->bitmap.width; x++, n++)
1993 {
1994 x_offset=CastDoubleToLong(ceil(point.x+x-0.5));
1995 if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns))
1996 {
1997 if (q != (Quantum *) NULL)
1998 q+=(ptrdiff_t) GetPixelChannels(image);
1999 continue;
2000 }
2001 fill_opacity=1.0;
2002 if (bitmap->bitmap.buffer != (unsigned char *) NULL)
2003 {
2004 if (bitmap->bitmap.pixel_mode == ft_pixel_mode_grays)
2005 fill_opacity=(double) (r[n])/(bitmap->bitmap.num_grays-1);
2006 else
2007 if (bitmap->bitmap.pixel_mode == ft_pixel_mode_mono)
2008 fill_opacity=((r[(x >> 3)+y*bitmap->bitmap.pitch] &
2009 (1 << (~x & 0x07)))) == 0 ? 0.0 : 1.0;
2010 }
2011 if (draw_info->text_antialias == MagickFalse)
2012 fill_opacity=fill_opacity >= 0.5 ? 1.0 : 0.0;
2013 if (active == MagickFalse)
2014 q=GetCacheViewAuthenticPixels(image_view,x_offset,y_offset,1,1,
2015 exception);
2016 if (q == (Quantum *) NULL)
2017 continue;
2018 if (transparent_fill == MagickFalse)
2019 {
2020 GetPixelInfo(image,&fill_color);
2021 GetFillColor(draw_info,x_offset,y_offset,&fill_color,exception);
2022 fill_opacity=fill_opacity*fill_color.alpha;
2023 CompositePixelOver(image,&fill_color,fill_opacity,q,
2024 GetPixelAlpha(image,q),q);
2025 }
2026 else
2027 {
2028 double
2029 Sa,
2030 Da;
2031
2032 Da=1.0-(QuantumScale*(double) GetPixelAlpha(image,q));
2033 Sa=fill_opacity;
2034 fill_opacity=(1.0-RoundToUnity(Sa+Da-Sa*Da))*(double)
2035 QuantumRange;
2036 SetPixelAlpha(image,fill_opacity,q);
2037 }
2038 if (active == MagickFalse)
2039 {
2040 sync=SyncCacheViewAuthenticPixels(image_view,exception);
2041 if (sync == MagickFalse)
2042 status=MagickFalse;
2043 }
2044 q+=(ptrdiff_t) GetPixelChannels(image);
2045 }
2046 sync=SyncCacheViewAuthenticPixels(image_view,exception);
2047 if (sync == MagickFalse)
2048 status=MagickFalse;
2049 }
2050 image_view=DestroyCacheView(image_view);
2051 if (((draw_info->stroke.alpha != (MagickRealType) TransparentAlpha) ||
2052 (draw_info->stroke_pattern != (Image *) NULL)) &&
2053 (status != MagickFalse))
2054 {
2055 /*
2056 Draw text stroke.
2057 */
2058 annotate_info->linejoin=RoundJoin;
2059 annotate_info->affine.tx=offset->x;
2060 annotate_info->affine.ty=offset->y;
2061 (void) ConcatenateString(&annotate_info->primitive,"'");
2062 if (strlen(annotate_info->primitive) > 7)
2063 (void) DrawImage(image,annotate_info,exception);
2064 (void) CloneString(&annotate_info->primitive,"path '");
2065 }
2066 }
2067 if ((fabs(draw_info->interword_spacing) >= MagickEpsilon) &&
2068 (IsUTFSpace(GetUTFCode(p+grapheme[i].cluster)) != MagickFalse) &&
2069 (IsUTFSpace(code) == MagickFalse))
2070 origin.x+=(FT_Pos) (64.0*draw_info->interword_spacing);
2071 else
2072 if (i == last_character)
2073 origin.x+=MagickMax((FT_Pos) grapheme[i].x_advance,bounds.xMax);
2074 else
2075 origin.x+=(FT_Pos) grapheme[i].x_advance;
2076 origin.y+=(FT_Pos) grapheme[i].y_advance;
2077 metrics->origin.x=(double) origin.x;
2078 metrics->origin.y=(double) origin.y;
2079 if (metrics->origin.x > metrics->width)
2080 metrics->width=metrics->origin.x;
2081 last_glyph_id=glyph.id;
2082 code=GetUTFCode(p+grapheme[i].cluster);
2083 }
2084 if (grapheme != (GraphemeInfo *) NULL)
2085 grapheme=(GraphemeInfo *) RelinquishMagickMemory(grapheme);
2086 if (utf8 != (unsigned char *) NULL)
2087 utf8=(unsigned char *) RelinquishMagickMemory(utf8);
2088 if (glyph.image != (FT_Glyph) NULL)
2089 {
2090 FT_Done_Glyph(glyph.image);
2091 glyph.image=(FT_Glyph) NULL;
2092 }
2093 /*
2094 Determine font metrics.
2095 */
2096 metrics->bounds.x1/=64.0;
2097 metrics->bounds.y1/=64.0;
2098 metrics->bounds.x2/=64.0;
2099 metrics->bounds.y2/=64.0;
2100 metrics->origin.x/=64.0;
2101 metrics->origin.y/=64.0;
2102 metrics->width=ceil(metrics->width/64.0);
2103 /*
2104 Relinquish resources.
2105 */
2106 annotate_info=DestroyDrawInfo(annotate_info);
2107 (void) FT_Done_Face(face);
2108 FreetypeDone(memory,library,stream);
2109 return(status);
2110}
2111#else
2112static MagickBooleanType RenderFreetype(Image *image,const DrawInfo *draw_info,
2113 const char *magick_unused(encoding),const PointInfo *offset,
2114 TypeMetric *metrics,ExceptionInfo *exception)
2115{
2116 magick_unreferenced(encoding);
2117 (void) ThrowMagickException(exception,GetMagickModule(),
2118 MissingDelegateWarning,"DelegateLibrarySupportNotBuiltIn","'%s' (Freetype)",
2119 draw_info->font != (char *) NULL ? draw_info->font : "none");
2120 return(RenderPostscript(image,draw_info,offset,metrics,exception));
2121}
2122#endif
2123␌
2124/*
2125%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2126% %
2127% %
2128% %
2129+ R e n d e r P o s t s c r i p t %
2130% %
2131% %
2132% %
2133%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2134%
2135% RenderPostscript() renders text on the image with a Postscript font. It
2136% also returns the bounding box of the text relative to the image.
2137%
2138% The format of the RenderPostscript method is:
2139%
2140% MagickBooleanType RenderPostscript(Image *image,DrawInfo *draw_info,
2141% const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
2142%
2143% A description of each parameter follows:
2144%
2145% o image: the image.
2146%
2147% o draw_info: the draw info.
2148%
2149% o offset: (x,y) location of text relative to image.
2150%
2151% o metrics: bounding box of text.
2152%
2153% o exception: return any errors or warnings in this structure.
2154%
2155*/
2156
2157static char *EscapeParenthesis(const char *source)
2158{
2159 char
2160 *destination;
2161
2162 char
2163 *q;
2164
2165 const char
2166 *p;
2167
2168 size_t
2169 length;
2170
2171 assert(source != (const char *) NULL);
2172 length=0;
2173 for (p=source; *p != '\0'; p++)
2174 {
2175 if ((*p == '\\') || (*p == '(') || (*p == ')'))
2176 {
2177 if (~length < 1)
2178 ThrowFatalException(ResourceLimitFatalError,"UnableToEscapeString");
2179 length++;
2180 }
2181 length++;
2182 }
2183 destination=(char *) NULL;
2184 if (~length >= (MagickPathExtent-1))
2185 destination=(char *) AcquireQuantumMemory(length+MagickPathExtent,
2186 sizeof(*destination));
2187 if (destination == (char *) NULL)
2188 ThrowFatalException(ResourceLimitFatalError,"UnableToEscapeString");
2189 *destination='\0';
2190 q=destination;
2191 for (p=source; *p != '\0'; p++)
2192 {
2193 if ((*p == '\\') || (*p == '(') || (*p == ')'))
2194 *q++='\\';
2195 *q++=(*p);
2196 }
2197 *q='\0';
2198 return(destination);
2199}
2200
2201static MagickBooleanType RenderPostscript(Image *image,
2202 const DrawInfo *draw_info,const PointInfo *offset,TypeMetric *metrics,
2203 ExceptionInfo *exception)
2204{
2205 char
2206 filename[MagickPathExtent],
2207 geometry[MagickPathExtent],
2208 *text;
2209
2210 FILE
2211 *file;
2212
2213 Image
2214 *annotate_image;
2215
2216 ImageInfo
2217 *annotate_info;
2218
2219 int
2220 unique_file;
2221
2222 MagickBooleanType
2223 identity,
2224 status;
2225
2226 PointInfo
2227 extent,
2228 point,
2229 resolution;
2230
2231 ssize_t
2232 i;
2233
2234 size_t
2235 length;
2236
2237 ssize_t
2238 y;
2239
2240 /*
2241 Render label with a Postscript font.
2242 */
2243 if (draw_info->debug != MagickFalse)
2244 (void) LogMagickEvent(AnnotateEvent,GetMagickModule(),
2245 "Font %s; pointsize %g",draw_info->font != (char *) NULL ?
2246 draw_info->font : "none",draw_info->pointsize);
2247 file=(FILE *) NULL;
2248 unique_file=AcquireUniqueFileResource(filename);
2249 if (unique_file != -1)
2250 file=fdopen(unique_file,"wb");
2251 if ((unique_file == -1) || (file == (FILE *) NULL))
2252 {
2253 ThrowFileException(exception,FileOpenError,"UnableToOpenFile",filename);
2254 return(MagickFalse);
2255 }
2256 (void) FormatLocaleFile(file,"%%!PS-Adobe-3.0\n");
2257 (void) FormatLocaleFile(file,"/ReencodeType\n");
2258 (void) FormatLocaleFile(file,"{\n");
2259 (void) FormatLocaleFile(file," findfont dup length\n");
2260 (void) FormatLocaleFile(file,
2261 " dict begin { 1 index /FID ne {def} {pop pop} ifelse } forall\n");
2262 (void) FormatLocaleFile(file,
2263 " /Encoding ISOLatin1Encoding def currentdict end definefont pop\n");
2264 (void) FormatLocaleFile(file,"} bind def\n");
2265 /*
2266 Sample to compute bounding box.
2267 */
2268 identity=(fabs(draw_info->affine.sx-draw_info->affine.sy) < MagickEpsilon) &&
2269 (fabs(draw_info->affine.rx) < MagickEpsilon) &&
2270 (fabs(draw_info->affine.ry) < MagickEpsilon) ? MagickTrue : MagickFalse;
2271 extent.x=0.0;
2272 extent.y=0.0;
2273 length=strlen(draw_info->text);
2274 for (i=0; i <= (ssize_t) (length+2); i++)
2275 {
2276 point.x=fabs(draw_info->affine.sx*i*draw_info->pointsize+
2277 draw_info->affine.ry*2.0*draw_info->pointsize);
2278 point.y=fabs(draw_info->affine.rx*i*draw_info->pointsize+
2279 draw_info->affine.sy*2.0*draw_info->pointsize);
2280 if (point.x > extent.x)
2281 extent.x=point.x;
2282 if (point.y > extent.y)
2283 extent.y=point.y;
2284 }
2285 (void) FormatLocaleFile(file,"%g %g moveto\n",identity != MagickFalse ? 0.0 :
2286 extent.x/2.0,extent.y/2.0);
2287 (void) FormatLocaleFile(file,"%g %g scale\n",draw_info->pointsize,
2288 draw_info->pointsize);
2289 if ((draw_info->font == (char *) NULL) || (*draw_info->font == '\0') ||
2290 (strchr(draw_info->font,'/') != (char *) NULL))
2291 (void) FormatLocaleFile(file,
2292 "/Times-Roman-ISO dup /Times-Roman ReencodeType findfont setfont\n");
2293 else
2294 (void) FormatLocaleFile(file,
2295 "/%s-ISO dup /%s ReencodeType findfont setfont\n",draw_info->font,
2296 draw_info->font);
2297 (void) FormatLocaleFile(file,"[%g %g %g %g 0 0] concat\n",
2298 draw_info->affine.sx,-draw_info->affine.rx,-draw_info->affine.ry,
2299 draw_info->affine.sy);
2300 text=EscapeParenthesis(draw_info->text);
2301 if (identity == MagickFalse)
2302 (void) FormatLocaleFile(file,"(%s) stringwidth pop -0.5 mul -0.5 rmoveto\n",
2303 text);
2304 (void) FormatLocaleFile(file,"(%s) show\n",text);
2305 text=DestroyString(text);
2306 (void) FormatLocaleFile(file,"showpage\n");
2307 (void) fclose(file);
2308 (void) FormatLocaleString(geometry,MagickPathExtent,"%.20gx%.20g+0+0!",
2309 floor(extent.x+0.5),floor(extent.y+0.5));
2310 annotate_info=AcquireImageInfo();
2311 (void) FormatLocaleString(annotate_info->filename,MagickPathExtent,"ps:%s",
2312 filename);
2313 (void) CloneString(&annotate_info->page,geometry);
2314 if (draw_info->density != (char *) NULL)
2315 (void) CloneString(&annotate_info->density,draw_info->density);
2316 annotate_info->antialias=draw_info->text_antialias;
2317 annotate_image=ReadImage(annotate_info,exception);
2318 CatchException(exception);
2319 annotate_info=DestroyImageInfo(annotate_info);
2320 (void) RelinquishUniqueFileResource(filename);
2321 if (annotate_image == (Image *) NULL)
2322 return(MagickFalse);
2323 (void) NegateImage(annotate_image,MagickFalse,exception);
2324 resolution.x=DefaultResolution;
2325 resolution.y=DefaultResolution;
2326 if (draw_info->density != (char *) NULL)
2327 {
2328 GeometryInfo
2329 geometry_info;
2330
2331 MagickStatusType
2332 flags;
2333
2334 flags=ParseGeometry(draw_info->density,&geometry_info);
2335 if ((flags & RhoValue) != 0)
2336 resolution.x=geometry_info.rho;
2337 resolution.y=resolution.x;
2338 if ((flags & SigmaValue) != 0)
2339 resolution.y=geometry_info.sigma;
2340 }
2341 if (identity == MagickFalse)
2342 (void) TransformImage(&annotate_image,"0x0",(char *) NULL,exception);
2343 else
2344 {
2345 RectangleInfo
2346 crop_info;
2347
2348 crop_info=GetImageBoundingBox(annotate_image,exception);
2349 crop_info.height=(size_t) ((resolution.y/DefaultResolution)*
2350 ExpandAffine(&draw_info->affine)*draw_info->pointsize+0.5);
2351 crop_info.y=CastDoubleToLong(ceil((resolution.y/DefaultResolution)*
2352 extent.y/8.0-0.5));
2353 (void) FormatLocaleString(geometry,MagickPathExtent,
2354 "%.20gx%.20g%+.20g%+.20g",(double) crop_info.width,(double)
2355 crop_info.height,(double) crop_info.x,(double) crop_info.y);
2356 (void) TransformImage(&annotate_image,geometry,(char *) NULL,exception);
2357 }
2358 metrics->pixels_per_em.x=(resolution.y/DefaultResolution)*
2359 ExpandAffine(&draw_info->affine)*draw_info->pointsize;
2360 metrics->pixels_per_em.y=metrics->pixels_per_em.x;
2361 metrics->ascent=metrics->pixels_per_em.y;
2362 metrics->descent=metrics->pixels_per_em.y/-5.0;
2363 metrics->width=(double) annotate_image->columns/
2364 ExpandAffine(&draw_info->affine);
2365 metrics->height=floor(metrics->ascent-metrics->descent+0.5);
2366 metrics->max_advance=metrics->pixels_per_em.x;
2367 metrics->bounds.x1=0.0;
2368 metrics->bounds.y1=metrics->descent;
2369 metrics->bounds.x2=metrics->ascent+metrics->descent;
2370 metrics->bounds.y2=metrics->ascent+metrics->descent;
2371 metrics->underline_position=(-2.0);
2372 metrics->underline_thickness=1.0;
2373 if (draw_info->render == MagickFalse)
2374 {
2375 annotate_image=DestroyImage(annotate_image);
2376 return(MagickTrue);
2377 }
2378 if (draw_info->fill.alpha != (MagickRealType) TransparentAlpha)
2379 {
2380 CacheView
2381 *annotate_view;
2382
2383 MagickBooleanType
2384 sync;
2385
2386 PixelInfo
2387 fill_color;
2388
2389 /*
2390 Render fill color.
2391 */
2392 if ((image->alpha_trait & BlendPixelTrait) == 0)
2393 (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
2394 if (annotate_image->alpha_trait == UndefinedPixelTrait)
2395 (void) SetImageAlphaChannel(annotate_image,OpaqueAlphaChannel,
2396 exception);
2397 fill_color=draw_info->fill;
2398 status=MagickTrue;
2399 annotate_view=AcquireAuthenticCacheView(annotate_image,exception);
2400#if defined(MAGICKCORE_OPENMP_SUPPORT)
2401 #pragma omp parallel for schedule(static) shared(status) \
2402 magick_number_threads(annotate_image,annotate_image,annotate_image->rows,4)
2403#endif
2404 for (y=0; y < (ssize_t) annotate_image->rows; y++)
2405 {
2406 ssize_t
2407 x;
2408
2409 Quantum
2410 *magick_restrict q;
2411
2412 if (status == MagickFalse)
2413 continue;
2414 q=GetCacheViewAuthenticPixels(annotate_view,0,y,annotate_image->columns,
2415 1,exception);
2416 if (q == (Quantum *) NULL)
2417 {
2418 status=MagickFalse;
2419 continue;
2420 }
2421 for (x=0; x < (ssize_t) annotate_image->columns; x++)
2422 {
2423 GetFillColor(draw_info,x,y,&fill_color,exception);
2424 SetPixelAlpha(annotate_image,ClampToQuantum((((double) QuantumScale*
2425 GetPixelIntensity(annotate_image,q)*fill_color.alpha))),q);
2426 SetPixelRed(annotate_image,fill_color.red,q);
2427 SetPixelGreen(annotate_image,fill_color.green,q);
2428 SetPixelBlue(annotate_image,fill_color.blue,q);
2429 q+=(ptrdiff_t) GetPixelChannels(annotate_image);
2430 }
2431 sync=SyncCacheViewAuthenticPixels(annotate_view,exception);
2432 if (sync == MagickFalse)
2433 status=MagickFalse;
2434 }
2435 annotate_view=DestroyCacheView(annotate_view);
2436 (void) CompositeImage(image,annotate_image,OverCompositeOp,MagickTrue,
2437 (ssize_t) ceil(offset->x-0.5),(ssize_t) ceil(offset->y-(metrics->ascent+
2438 metrics->descent)-0.5),exception);
2439 }
2440 annotate_image=DestroyImage(annotate_image);
2441 return(MagickTrue);
2442}
2443␌
2444/*
2445%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2446% %
2447% %
2448% %
2449+ R e n d e r X 1 1 %
2450% %
2451% %
2452% %
2453%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2454%
2455% RenderX11() renders text on the image with an X11 font. It also returns the
2456% bounding box of the text relative to the image.
2457%
2458% The format of the RenderX11 method is:
2459%
2460% MagickBooleanType RenderX11(Image *image,DrawInfo *draw_info,
2461% const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
2462%
2463% A description of each parameter follows:
2464%
2465% o image: the image.
2466%
2467% o draw_info: the draw info.
2468%
2469% o offset: (x,y) location of text relative to image.
2470%
2471% o metrics: bounding box of text.
2472%
2473% o exception: return any errors or warnings in this structure.
2474%
2475*/
2476static MagickBooleanType RenderX11(Image *image,const DrawInfo *draw_info,
2477 const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
2478{
2479 MagickBooleanType
2480 status;
2481
2482 if (annotate_semaphore == (SemaphoreInfo *) NULL)
2483 ActivateSemaphoreInfo(&annotate_semaphore);
2484 LockSemaphoreInfo(annotate_semaphore);
2485 status=XRenderImage(image,draw_info,offset,metrics,exception);
2486 UnlockSemaphoreInfo(annotate_semaphore);
2487 return(status);
2488}
_AffineMatrix
Definition geometry.h:95
_CacheView
Definition cache-view.c:66
_DrawInfo
Definition draw.h:210
_ExceptionInfo
Definition exception.h:102
_GeometryInfo
Definition geometry.h:106
_GraphemeInfo
Definition annotate.c:121
_ImageInfo
Definition image.h:359
_Image
Definition image.h:132
_PixelInfo
Definition pixel.h:182
_PointInfo
Definition geometry.h:123
_RectangleInfo
Definition geometry.h:130
_TokenInfo
Definition token.c:62
_TypeInfo
Definition type.h:51
_TypeMetric
Definition draw.h:381