MagickCore 6.9.13
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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 "magick/studio.h"
46#include "magick/annotate.h"
47#include "magick/attribute.h"
48#include "magick/cache-private.h"
49#include "magick/cache-view.h"
50#include "magick/channel.h"
51#include "magick/client.h"
52#include "magick/color.h"
53#include "magick/color-private.h"
54#include "magick/colorspace-private.h"
55#include "magick/composite.h"
56#include "magick/composite-private.h"
57#include "magick/constitute.h"
58#include "magick/draw.h"
59#include "magick/draw-private.h"
60#include "magick/exception.h"
61#include "magick/exception-private.h"
62#include "magick/gem.h"
63#include "magick/geometry.h"
64#include "magick/image-private.h"
65#include "magick/log.h"
66#include "magick/quantum.h"
67#include "magick/quantum-private.h"
68#include "magick/pixel-accessor.h"
69#include "magick/policy.h"
70#include "magick/property.h"
71#include "magick/resource_.h"
72#include "magick/semaphore.h"
73#include "magick/statistic.h"
74#include "magick/string_.h"
75#include "magick/token.h"
76#include "magick/token-private.h"
77#include "magick/transform.h"
78#include "magick/type.h"
79#include "magick/utility.h"
80#include "magick/utility-private.h"
81#include "magick/xwindow-private.h"
82#if defined(MAGICKCORE_FREETYPE_DELEGATE)
83#if defined(__MINGW32__)
84# undef interface
85#endif
86#include <ft2build.h>
87#if defined(FT_FREETYPE_H)
88# include FT_FREETYPE_H
89#else
90# include <freetype/freetype.h>
91#endif
92#if defined(FT_GLYPH_H)
93# include FT_GLYPH_H
94#else
95# include <freetype/ftglyph.h>
96#endif
97#if defined(FT_OUTLINE_H)
98# include FT_OUTLINE_H
99#else
100# include <freetype/ftoutln.h>
101#endif
102#if defined(FT_BBOX_H)
103# include FT_BBOX_H
104#else
105# include <freetype/ftbbox.h>
106#endif /* defined(FT_BBOX_H) */
107#endif
108#if defined(MAGICKCORE_RAQM_DELEGATE)
109#include <raqm.h>
110#endif
111typedef struct _GraphemeInfo
112{
113 ssize_t
114 index,
115 x_offset,
116 x_advance,
117 y_offset,
118 y_advance;
119
120 size_t
121 cluster;
122} GraphemeInfo;
123␌
124/*
125 Annotate semaphores.
126*/
127static SemaphoreInfo
128 *annotate_semaphore = (SemaphoreInfo *) NULL;
129␌
130/*
131 Forward declarations.
132*/
133static MagickBooleanType
134 RenderType(Image *,const DrawInfo *,const PointInfo *,TypeMetric *),
135 RenderPostscript(Image *,const DrawInfo *,const PointInfo *,TypeMetric *),
136 RenderFreetype(Image *,const DrawInfo *,const char *,const PointInfo *,
137 TypeMetric *),
138 RenderX11(Image *,const DrawInfo *,const PointInfo *,TypeMetric *);
139␌
140/*
141%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
142% %
143% %
144% %
145+ A n n o t a t e C o m p o n e n t G e n e s i s %
146% %
147% %
148% %
149%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
150%
151% AnnotateComponentGenesis() instantiates the annotate component.
152%
153% The format of the AnnotateComponentGenesis method is:
154%
155% MagickBooleanType AnnotateComponentGenesis(void)
156%
157*/
158MagickExport MagickBooleanType AnnotateComponentGenesis(void)
159{
160 if (annotate_semaphore == (SemaphoreInfo *) NULL)
161 annotate_semaphore=AllocateSemaphoreInfo();
162 return(MagickTrue);
163}
164␌
165/*
166%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
167% %
168% %
169% %
170+ 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 %
171% %
172% %
173% %
174%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
175%
176% AnnotateComponentTerminus() destroys the annotate component.
177%
178% The format of the AnnotateComponentTerminus method is:
179%
180% AnnotateComponentTerminus(void)
181%
182*/
183MagickExport void AnnotateComponentTerminus(void)
184{
185 if (annotate_semaphore == (SemaphoreInfo *) NULL)
186 ActivateSemaphoreInfo(&annotate_semaphore);
187 DestroySemaphoreInfo(&annotate_semaphore);
188}
189␌
190/*
191%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
192% %
193% %
194% %
195% A n n o t a t e I m a g e %
196% %
197% %
198% %
199%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
200%
201% AnnotateImage() annotates an image with text.
202%
203% The format of the AnnotateImage method is:
204%
205% MagickBooleanType AnnotateImage(Image *image,DrawInfo *draw_info)
206%
207% A description of each parameter follows:
208%
209% o image: the image.
210%
211% o draw_info: the draw info.
212%
213*/
214MagickExport MagickBooleanType AnnotateImage(Image *image,
215 const DrawInfo *draw_info)
216{
217 char
218 *p,
219 color[MaxTextExtent],
220 primitive[MaxTextExtent],
221 *text,
222 **textlist;
223
224 DrawInfo
225 *annotate,
226 *annotate_info;
227
228 GeometryInfo
229 geometry_info;
230
231 MagickBooleanType
232 status;
233
234 PixelPacket
235 pixel;
236
237 PointInfo
238 offset;
239
240 RectangleInfo
241 geometry;
242
243 ssize_t
244 i;
245
246 TypeMetric
247 metrics;
248
249 size_t
250 height,
251 number_lines;
252
253 assert(image != (Image *) NULL);
254 assert(image->signature == MagickCoreSignature);
255 if (IsEventLogging() != MagickFalse)
256 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
257 assert(draw_info != (DrawInfo *) NULL);
258 assert(draw_info->signature == MagickCoreSignature);
259 if (draw_info->text == (char *) NULL)
260 return(MagickFalse);
261 if (*draw_info->text == '\0')
262 return(MagickTrue);
263 annotate=CloneDrawInfo((ImageInfo *) NULL,draw_info);
264 text=annotate->text;
265 annotate->text=(char *) NULL;
266 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
267 number_lines=1;
268 for (p=text; *p != '\0'; p++)
269 if (*p == '\n')
270 number_lines++;
271 textlist=(char **) AcquireQuantumMemory(number_lines+1,sizeof(*textlist));
272 if (textlist == (char **) NULL)
273 {
274 annotate_info=DestroyDrawInfo(annotate_info);
275 annotate=DestroyDrawInfo(annotate);
276 text=DestroyString(text);
277 return(MagickFalse);
278 }
279 p=text;
280 for (i=0; i < (ssize_t) number_lines; i++)
281 {
282 char
283 *q;
284
285 textlist[i]=p;
286 for (q=p; *q != '\0'; q++)
287 if ((*q == '\r') || (*q == '\n'))
288 break;
289 if (*q == '\r')
290 {
291 *q='\0';
292 q++;
293 }
294 *q='\0';
295 p=q+1;
296 }
297 textlist[i]=(char *) NULL;
298 SetGeometry(image,&geometry);
299 SetGeometryInfo(&geometry_info);
300 if (annotate_info->geometry != (char *) NULL)
301 {
302 (void) ParsePageGeometry(image,annotate_info->geometry,&geometry,
303 &image->exception);
304 (void) ParseGeometry(annotate_info->geometry,&geometry_info);
305 }
306 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
307 {
308 annotate_info=DestroyDrawInfo(annotate_info);
309 annotate=DestroyDrawInfo(annotate);
310 textlist=(char **) RelinquishMagickMemory(textlist);
311 text=DestroyString(text);
312 return(MagickFalse);
313 }
314 if (IsGrayColorspace(image->colorspace) != MagickFalse)
315 (void) SetImageColorspace(image,sRGBColorspace);
316 status=MagickTrue;
317 (void) memset(&metrics,0,sizeof(metrics));
318 for (i=0; textlist[i] != (char *) NULL; i++)
319 {
320 if (*textlist[i] == '\0')
321 continue;
322 /*
323 Position text relative to image.
324 */
325 annotate_info->affine.tx=geometry_info.xi-image->page.x;
326 annotate_info->affine.ty=geometry_info.psi-image->page.y;
327 (void) CloneString(&annotate->text,textlist[i]);
328 if ((metrics.width == 0) || (annotate->gravity != NorthWestGravity))
329 (void) GetTypeMetrics(image,annotate,&metrics);
330 height=CastDoubleToUnsigned(metrics.ascent-metrics.descent+0.5);
331 if (height == 0)
332 height=draw_info->pointsize;
333 height+=(size_t) floor(draw_info->interline_spacing+0.5);
334 switch (annotate->gravity)
335 {
336 case UndefinedGravity:
337 default:
338 {
339 offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height;
340 offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height;
341 break;
342 }
343 case (GravityType) NorthWestGravity:
344 {
345 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+i*
346 annotate_info->affine.ry*height+annotate_info->affine.ry*
347 (metrics.ascent+metrics.descent);
348 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
349 annotate_info->affine.sy*height+annotate_info->affine.sy*
350 metrics.ascent;
351 break;
352 }
353 case (GravityType) NorthGravity:
354 {
355 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
356 geometry.width/2.0+i*annotate_info->affine.ry*height-
357 annotate_info->affine.sx*metrics.width/2.0+annotate_info->affine.ry*
358 (metrics.ascent+metrics.descent);
359 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
360 annotate_info->affine.sy*height+annotate_info->affine.sy*
361 metrics.ascent-annotate_info->affine.rx*metrics.width/2.0;
362 break;
363 }
364 case (GravityType) NorthEastGravity:
365 {
366 offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
367 geometry.width+i*annotate_info->affine.ry*height-
368 annotate_info->affine.sx*metrics.width+annotate_info->affine.ry*
369 (metrics.ascent+metrics.descent)-1.0;
370 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
371 annotate_info->affine.sy*height+annotate_info->affine.sy*
372 metrics.ascent-annotate_info->affine.rx*metrics.width;
373 break;
374 }
375 case (GravityType) WestGravity:
376 {
377 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+i*
378 annotate_info->affine.ry*height+annotate_info->affine.ry*
379 (metrics.ascent+metrics.descent-(number_lines-1.0)*height)/2.0;
380 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
381 geometry.height/2.0+i*annotate_info->affine.sy*height+
382 annotate_info->affine.sy*(metrics.ascent+metrics.descent-
383 (number_lines-1.0)*height)/2.0;
384 break;
385 }
386 case (GravityType) StaticGravity:
387 case (GravityType) CenterGravity:
388 {
389 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
390 geometry.width/2.0+i*annotate_info->affine.ry*height-
391 annotate_info->affine.sx*metrics.width/2.0+annotate_info->affine.ry*
392 (metrics.ascent+metrics.descent-(number_lines-1)*height)/2.0;
393 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
394 geometry.height/2.0+i*annotate_info->affine.sy*height-
395 annotate_info->affine.rx*metrics.width/2.0+annotate_info->affine.sy*
396 (metrics.ascent+metrics.descent-(number_lines-1.0)*height)/2.0;
397 break;
398 }
399 case (GravityType) EastGravity:
400 {
401 offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
402 geometry.width+i*annotate_info->affine.ry*height-
403 annotate_info->affine.sx*metrics.width+annotate_info->affine.ry*
404 (metrics.ascent+metrics.descent-(number_lines-1.0)*height)/2.0-1.0;
405 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
406 geometry.height/2.0+i*annotate_info->affine.sy*height-
407 annotate_info->affine.rx*metrics.width+annotate_info->affine.sy*
408 (metrics.ascent+metrics.descent-(number_lines-1.0)*height)/2.0;
409 break;
410 }
411 case (GravityType) SouthWestGravity:
412 {
413 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+i*
414 annotate_info->affine.ry*height-annotate_info->affine.ry*
415 (number_lines-1.0)*height;
416 offset.y=(geometry.height == 0 ? 1.0 : -1.0)*annotate_info->affine.ty+
417 geometry.height+i*annotate_info->affine.sy*height-
418 annotate_info->affine.sy*(number_lines-1.0)*height+metrics.descent;
419 break;
420 }
421 case (GravityType) SouthGravity:
422 {
423 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
424 geometry.width/2.0+i*annotate_info->affine.ry*height-
425 annotate_info->affine.sx*metrics.width/2.0-annotate_info->affine.ry*
426 (number_lines-1.0)*height/2.0;
427 offset.y=(geometry.height == 0 ? 1.0 : -1.0)*annotate_info->affine.ty+
428 geometry.height+i*annotate_info->affine.sy*height-
429 annotate_info->affine.rx*metrics.width/2.0-annotate_info->affine.sy*
430 (number_lines-1.0)*height+metrics.descent;
431 break;
432 }
433 case (GravityType) SouthEastGravity:
434 {
435 offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
436 geometry.width+i*annotate_info->affine.ry*height-
437 annotate_info->affine.sx*metrics.width-annotate_info->affine.ry*
438 (number_lines-1.0)*height-1.0;
439 offset.y=(geometry.height == 0 ? 1.0 : -1.0)*annotate_info->affine.ty+
440 geometry.height+i*annotate_info->affine.sy*height-
441 annotate_info->affine.rx*metrics.width-annotate_info->affine.sy*
442 (number_lines-1.0)*height+metrics.descent;
443 break;
444 }
445 }
446 switch (annotate->align)
447 {
448 case LeftAlign:
449 {
450 offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height;
451 offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height;
452 break;
453 }
454 case CenterAlign:
455 {
456 offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height-
457 annotate_info->affine.sx*metrics.width/2.0;
458 offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height-
459 annotate_info->affine.rx*metrics.width/2.0;
460 break;
461 }
462 case RightAlign:
463 {
464 offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height-
465 annotate_info->affine.sx*metrics.width;
466 offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height-
467 annotate_info->affine.rx*metrics.width;
468 break;
469 }
470 default:
471 break;
472 }
473 if (draw_info->undercolor.opacity != TransparentOpacity)
474 {
475 DrawInfo
476 *undercolor_info;
477
478 /*
479 Text box.
480 */
481 undercolor_info=CloneDrawInfo((ImageInfo *) NULL,(DrawInfo *) NULL);
482 undercolor_info->fill=draw_info->undercolor;
483 undercolor_info->affine=draw_info->affine;
484 undercolor_info->affine.tx=offset.x-draw_info->affine.ry*metrics.ascent;
485 undercolor_info->affine.ty=offset.y-draw_info->affine.sy*metrics.ascent;
486 (void) FormatLocaleString(primitive,MaxTextExtent,
487 "rectangle 0.0,0.0 %g,%g",metrics.origin.x,(double) height);
488 (void) CloneString(&undercolor_info->primitive,primitive);
489 (void) DrawImage(image,undercolor_info);
490 (void) DestroyDrawInfo(undercolor_info);
491 }
492 annotate_info->affine.tx=offset.x;
493 annotate_info->affine.ty=offset.y;
494 pixel=annotate_info->fill;
495 if (annotate_info->stroke.opacity != TransparentOpacity)
496 pixel=annotate_info->stroke;
497 (void) QueryColorname(image,&pixel,SVGCompliance,color,&image->exception);
498 (void) FormatLocaleString(primitive,MagickPathExtent,"stroke %s "
499 "stroke-width %g line 0,0 %g,0",color,(double)
500 metrics.underline_thickness,(double) metrics.width);
501 /*
502 Annotate image with text.
503 */
504 switch (annotate->decorate)
505 {
506 case OverlineDecoration:
507 {
508 annotate_info->affine.ty-=(draw_info->affine.sy*(metrics.ascent+
509 metrics.descent-metrics.underline_position));
510 (void) CloneString(&annotate_info->primitive,primitive);
511 (void) DrawImage(image,annotate_info);
512 break;
513 }
514 case UnderlineDecoration:
515 {
516 annotate_info->affine.ty-=(draw_info->affine.sy*
517 metrics.underline_position);
518 (void) CloneString(&annotate_info->primitive,primitive);
519 (void) DrawImage(image,annotate_info);
520 break;
521 }
522 default:
523 break;
524 }
525 status=RenderType(image,annotate,&offset,&metrics);
526 if (status == MagickFalse)
527 break;
528 if (annotate->decorate == LineThroughDecoration)
529 {
530 annotate_info->affine.ty-=(draw_info->affine.sy*(height+
531 metrics.underline_position+metrics.descent*2)/2.0);
532 (void) CloneString(&annotate_info->primitive,primitive);
533 (void) DrawImage(image,annotate_info);
534 }
535 }
536 /*
537 Relinquish resources.
538 */
539 annotate_info=DestroyDrawInfo(annotate_info);
540 annotate=DestroyDrawInfo(annotate);
541 textlist=(char **) RelinquishMagickMemory(textlist);
542 text=DestroyString(text);
543 return(status);
544}
545␌
546/*
547%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
548% %
549% %
550% %
551% F o r m a t M a g i c k C a p t i o n %
552% %
553% %
554% %
555%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
556%
557% FormatMagickCaption() formats a caption so that it fits within the image
558% width. It returns the number of lines in the formatted caption.
559%
560% The format of the FormatMagickCaption method is:
561%
562% ssize_t FormatMagickCaption(Image *image,DrawInfo *draw_info,
563% const MagickBooleanType split,TypeMetric *metrics,char **caption)
564%
565% A description of each parameter follows.
566%
567% o image: The image.
568%
569% o draw_info: the draw info.
570%
571% o split: when no convenient line breaks-- insert newline.
572%
573% o metrics: Return the font metrics in this structure.
574%
575% o caption: the caption.
576%
577*/
578
579static inline char *ReplaceSpaceWithNewline(char **caption,char *space)
580{
581 size_t
582 octets;
583
584 if ((caption == (char **) NULL) || (space == (char *) NULL))
585 return((char *) NULL);
586 octets=(size_t) GetUTFOctets(space);
587 if (octets == 1)
588 *space='\n';
589 else
590 {
591 char
592 *target;
593
594 size_t
595 length;
596
597 ssize_t
598 offset;
599
600 length=strlen(*caption);
601 *space='\n';
602 offset=space-(*caption);
603 if (offset >= 0)
604 {
605 target=AcquireString(*caption);
606 CopyMagickString(target,*caption,(size_t) offset+2);
607 ConcatenateMagickString(target,space+octets,length);
608 (void) DestroyString(*caption);
609 *caption=target;
610 space=(*caption)+offset;
611 }
612 }
613 return(space);
614}
615
616MagickExport ssize_t FormatMagickCaption(Image *image,DrawInfo *draw_info,
617 const MagickBooleanType split,TypeMetric *metrics,char **caption)
618{
619 char
620 *p,
621 *q,
622 *s;
623
624 MagickBooleanType
625 status;
626
627 size_t
628 width;
629
630 ssize_t
631 i,
632 n;
633
634 if ((caption == (char **) NULL) || (*caption == (char *) NULL))
635 return(-1);
636 q=draw_info->text;
637 s=(char *) NULL;
638 width=0;
639 for (p=(*caption); GetUTFCode(p) != 0; p+=(ptrdiff_t) GetUTFOctets(p))
640 {
641 int
642 code;
643
644 code=GetUTFCode(p);
645 if (code == '\n')
646 {
647 q=draw_info->text;
648 continue;
649 }
650 if ((IsUTFSpace(code) != MagickFalse) &&
651 (IsNonBreakingUTFSpace(code) == MagickFalse))
652 {
653 s=p;
654 if (width > image->columns)
655 p=ReplaceSpaceWithNewline(caption,s);
656 }
657 for (i=0; i < (ssize_t) GetUTFOctets(p); i++)
658 *q++=(*(p+i));
659 *q='\0';
660 status=GetTypeMetrics(image,draw_info,metrics);
661 if (status == MagickFalse)
662 break;
663 width=CastDoubleToUnsigned(metrics->width+draw_info->stroke_width+0.5);
664 if (width <= image->columns)
665 continue;
666 if (s != (char *) NULL)
667 p=ReplaceSpaceWithNewline(caption,s);
668 else
669 if ((split != MagickFalse) || (GetUTFOctets(p) > 2))
670 {
671 /*
672 No convenient line breaks-- insert newline.
673 */
674 n=p-(*caption);
675 if ((n > 0) && ((*caption)[n-1] != '\n'))
676 {
677 char
678 *target;
679
680 target=AcquireString(*caption);
681 CopyMagickString(target,*caption,(size_t) n+1);
682 ConcatenateMagickString(target,"\n",strlen(*caption)+1);
683 ConcatenateMagickString(target,p,strlen(*caption)+2);
684 (void) DestroyString(*caption);
685 *caption=target;
686 p=(*caption)+n;
687 }
688 }
689 q=draw_info->text;
690 s=(char *) NULL;
691 }
692 n=0;
693 for (p=(*caption); GetUTFCode(p) != 0; p+=(ptrdiff_t) GetUTFOctets(p))
694 if (GetUTFCode(p) == '\n')
695 n++;
696 return(n);
697}
698␌
699/*
700%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
701% %
702% %
703% %
704% G e t M u l t i l i n e T y p e M e t r i c s %
705% %
706% %
707% %
708%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
709%
710% GetMultilineTypeMetrics() returns the following information for the
711% specified font and text:
712%
713% character width
714% character height
715% ascender
716% descender
717% text width
718% text height
719% maximum horizontal advance
720% bounds: x1
721% bounds: y1
722% bounds: x2
723% bounds: y2
724% origin: x
725% origin: y
726% underline position
727% underline thickness
728%
729% This method is like GetTypeMetrics() but it returns the maximum text width
730% and height for multiple lines of text.
731%
732% The format of the GetMultilineTypeMetrics method is:
733%
734% MagickBooleanType GetMultilineTypeMetrics(Image *image,
735% const DrawInfo *draw_info,TypeMetric *metrics)
736%
737% A description of each parameter follows:
738%
739% o image: the image.
740%
741% o draw_info: the draw info.
742%
743% o metrics: Return the font metrics in this structure.
744%
745*/
746MagickExport MagickBooleanType GetMultilineTypeMetrics(Image *image,
747 const DrawInfo *draw_info,TypeMetric *metrics)
748{
749 char
750 **textlist;
751
752 double
753 height;
754
755 DrawInfo
756 *annotate_info;
757
758 MagickBooleanType
759 status;
760
761 MagickSizeType
762 size;
763
764 ssize_t
765 i;
766
767 size_t
768 count;
769
770 TypeMetric
771 extent;
772
773 assert(image != (Image *) NULL);
774 assert(image->signature == MagickCoreSignature);
775 if (IsEventLogging() != MagickFalse)
776 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
777 assert(draw_info != (DrawInfo *) NULL);
778 assert(draw_info->text != (char *) NULL);
779 assert(draw_info->signature == MagickCoreSignature);
780 if (*draw_info->text == '\0')
781 {
782 (void) ThrowMagickException(&image->exception,GetMagickModule(),
783 OptionError,"LabelExpected","`%s'",image->filename);
784 return(MagickFalse);
785 }
786 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
787 annotate_info->text=DestroyString(annotate_info->text);
788 /*
789 Convert newlines to multiple lines of text.
790 */
791 textlist=StringToStrings(draw_info->text,&count);
792 if (textlist == (char **) NULL)
793 {
794 annotate_info=DestroyDrawInfo(annotate_info);
795 return(MagickFalse);
796 }
797 annotate_info->render=MagickFalse;
798 annotate_info->direction=UndefinedDirection;
799 (void) memset(metrics,0,sizeof(*metrics));
800 (void) memset(&extent,0,sizeof(extent));
801 /*
802 Find the widest of the text lines.
803 */
804 annotate_info->text=textlist[0];
805 status=GetTypeMetrics(image,annotate_info,&extent);
806 *metrics=extent;
807 height=(count*(size_t) (metrics->ascent-metrics->descent+
808 0.5)+(count-1)*draw_info->interline_spacing);
809 size=(MagickSizeType) fabs(height);
810 if (AcquireMagickResource(HeightResource,size) == MagickFalse)
811 {
812 (void) ThrowMagickException(&image->exception,GetMagickModule(),
813 ImageError,"WidthOrHeightExceedsLimit","`%s'",image->filename);
814 status=MagickFalse;
815 }
816 else
817 {
818 for (i=1; i < (ssize_t) count; i++)
819 {
820 annotate_info->text=textlist[i];
821 status=GetTypeMetrics(image,annotate_info,&extent);
822 if (status == MagickFalse)
823 break;
824 if (extent.width > metrics->width)
825 *metrics=extent;
826 size=(MagickSizeType) fabs(extent.width);
827 if (AcquireMagickResource(WidthResource,size) == MagickFalse)
828 {
829 (void) ThrowMagickException(&image->exception,GetMagickModule(),
830 ImageError,"WidthOrHeightExceedsLimit","`%s'",image->filename);
831 status=MagickFalse;
832 break;
833 }
834 }
835 metrics->height=(double) height;
836 }
837 /*
838 Relinquish resources.
839 */
840 annotate_info->text=(char *) NULL;
841 annotate_info=DestroyDrawInfo(annotate_info);
842 for (i=0; i < (ssize_t) count; i++)
843 textlist[i]=DestroyString(textlist[i]);
844 textlist=(char **) RelinquishMagickMemory(textlist);
845 return(status);
846}
847␌
848/*
849%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
850% %
851% %
852% %
853% G e t T y p e M e t r i c s %
854% %
855% %
856% %
857%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
858%
859% GetTypeMetrics() returns the following information for the specified font
860% and text:
861%
862% character width
863% character height
864% ascender
865% descender
866% text width
867% text height
868% maximum horizontal advance
869% bounds: x1
870% bounds: y1
871% bounds: x2
872% bounds: y2
873% origin: x
874% origin: y
875% underline position
876% underline thickness
877%
878% The format of the GetTypeMetrics method is:
879%
880% MagickBooleanType GetTypeMetrics(Image *image,const DrawInfo *draw_info,
881% TypeMetric *metrics)
882%
883% A description of each parameter follows:
884%
885% o image: the image.
886%
887% o draw_info: the draw info.
888%
889% o metrics: Return the font metrics in this structure.
890%
891*/
892MagickExport MagickBooleanType GetTypeMetrics(Image *image,
893 const DrawInfo *draw_info,TypeMetric *metrics)
894{
895 DrawInfo
896 *annotate_info;
897
898 MagickBooleanType
899 status;
900
901 PointInfo
902 offset;
903
904 assert(image != (Image *) NULL);
905 assert(image->signature == MagickCoreSignature);
906 if (IsEventLogging() != MagickFalse)
907 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
908 assert(draw_info != (DrawInfo *) NULL);
909 assert(draw_info->text != (char *) NULL);
910 assert(draw_info->signature == MagickCoreSignature);
911 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
912 annotate_info->render=MagickFalse;
913 annotate_info->direction=UndefinedDirection;
914 (void) memset(metrics,0,sizeof(*metrics));
915 offset.x=0.0;
916 offset.y=0.0;
917 status=RenderType(image,annotate_info,&offset,metrics);
918 if (draw_info->debug != MagickFalse)
919 (void) LogMagickEvent(AnnotateEvent,GetMagickModule(),"Metrics: text: %s; "
920 "width: %g; height: %g; ascent: %g; descent: %g; max advance: %g; "
921 "bounds: %g,%g %g,%g; origin: %g,%g; pixels per em: %g,%g; "
922 "underline position: %g; underline thickness: %g",annotate_info->text,
923 metrics->width,metrics->height,metrics->ascent,metrics->descent,
924 metrics->max_advance,metrics->bounds.x1,metrics->bounds.y1,
925 metrics->bounds.x2,metrics->bounds.y2,metrics->origin.x,metrics->origin.y,
926 metrics->pixels_per_em.x,metrics->pixels_per_em.y,
927 metrics->underline_position,metrics->underline_thickness);
928 annotate_info=DestroyDrawInfo(annotate_info);
929 return(status);
930}
931␌
932/*
933%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
934% %
935% %
936% %
937+ R e n d e r T y p e %
938% %
939% %
940% %
941%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
942%
943% RenderType() renders text on the image. It also returns the bounding box of
944% the text relative to the image.
945%
946% The format of the RenderType method is:
947%
948% MagickBooleanType RenderType(Image *image,DrawInfo *draw_info,
949% const PointInfo *offset,TypeMetric *metrics)
950%
951% A description of each parameter follows:
952%
953% o image: the image.
954%
955% o draw_info: the draw info.
956%
957% o offset: (x,y) location of text relative to image.
958%
959% o metrics: bounding box of text.
960%
961*/
962static MagickBooleanType RenderType(Image *image,const DrawInfo *draw_info,
963 const PointInfo *offset,TypeMetric *metrics)
964{
965 char
966 *font;
967
968 const TypeInfo
969 *type_info;
970
971 DrawInfo
972 *annotate_info;
973
974 ExceptionInfo
975 *sans_exception;
976
977 MagickBooleanType
978 status;
979
980 type_info=(const TypeInfo *) NULL;
981 if (draw_info->font != (char *) NULL)
982 {
983 if (*draw_info->font == '@')
984 {
985 status=RenderFreetype(image,draw_info,draw_info->encoding,offset,
986 metrics);
987 return(status);
988 }
989 if (*draw_info->font == '-')
990 return(RenderX11(image,draw_info,offset,metrics));
991 if (*draw_info->font == '^')
992 return(RenderPostscript(image,draw_info,offset,metrics));
993 if (IsPathAccessible(draw_info->font) != MagickFalse)
994 {
995 status=RenderFreetype(image,draw_info,draw_info->encoding,offset,
996 metrics);
997 return(status);
998 }
999 type_info=GetTypeInfo(draw_info->font,&image->exception);
1000 if (type_info == (const TypeInfo *) NULL)
1001 (void) ThrowMagickException(&image->exception,GetMagickModule(),
1002 TypeWarning,"UnableToReadFont","`%s'",draw_info->font);
1003 }
1004 if ((type_info == (const TypeInfo *) NULL) &&
1005 (draw_info->family != (const char *) NULL))
1006 {
1007 if (strpbrk(draw_info->family,",'\"") == (char *) NULL)
1008 type_info=GetTypeInfoByFamily(draw_info->family,draw_info->style,
1009 draw_info->stretch,draw_info->weight,&image->exception);
1010 if (type_info == (const TypeInfo *) NULL)
1011 {
1012 char
1013 **family;
1014
1015 int
1016 number_families;
1017
1018 ssize_t
1019 i;
1020
1021 /*
1022 Parse font family list.
1023 */
1024 family=StringToArgv(draw_info->family,&number_families);
1025 for (i=1; i < (ssize_t) number_families; i++)
1026 {
1027 (void) SubstituteString(&family[i],",","");
1028 type_info=GetTypeInfoByFamily(family[i],draw_info->style,
1029 draw_info->stretch,draw_info->weight,&image->exception);
1030 if ((type_info != (const TypeInfo *) NULL) &&
1031 (LocaleCompare(family[i],type_info->family) == 0))
1032 break;
1033 }
1034 for (i=0; i < (ssize_t) number_families; i++)
1035 family[i]=DestroyString(family[i]);
1036 family=(char **) RelinquishMagickMemory(family);
1037 if (type_info == (const TypeInfo *) NULL)
1038 (void) ThrowMagickException(&image->exception,GetMagickModule(),
1039 TypeWarning,"UnableToReadFont","`%s'",draw_info->family);
1040 }
1041 }
1042 font=GetPolicyValue("system:font");
1043 if (font != (char *) NULL)
1044 {
1045 if (IsPathAccessible(font) != MagickFalse)
1046 {
1047 /*
1048 Render with default system font.
1049 */
1050 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1051 annotate_info->font=font;
1052 status=RenderFreetype(image,annotate_info,annotate_info->encoding,
1053 offset,metrics);
1054 annotate_info=DestroyDrawInfo(annotate_info);
1055 return(status);
1056 }
1057 font=DestroyString(font);
1058 }
1059 sans_exception=AcquireExceptionInfo();
1060 if (type_info == (const TypeInfo *) NULL)
1061 type_info=GetTypeInfoByFamily((const char *) NULL,draw_info->style,
1062 draw_info->stretch,draw_info->weight,sans_exception);
1063 if (type_info == (const TypeInfo *) NULL)
1064 type_info=GetTypeInfo("*",sans_exception);
1065 sans_exception=DestroyExceptionInfo(sans_exception);
1066 if (type_info == (const TypeInfo *) NULL)
1067 {
1068 status=RenderFreetype(image,draw_info,draw_info->encoding,offset,metrics);
1069 return(status);
1070 }
1071 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1072 annotate_info->face=type_info->face;
1073 if (type_info->metrics != (char *) NULL)
1074 (void) CloneString(&annotate_info->metrics,type_info->metrics);
1075 if (type_info->glyphs != (char *) NULL)
1076 (void) CloneString(&annotate_info->font,type_info->glyphs);
1077 status=RenderFreetype(image,annotate_info,type_info->encoding,offset,metrics);
1078 annotate_info=DestroyDrawInfo(annotate_info);
1079 return(status);
1080}
1081␌
1082/*
1083%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1084% %
1085% %
1086% %
1087+ R e n d e r F r e e t y p e %
1088% %
1089% %
1090% %
1091%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1092%
1093% RenderFreetype() renders text on the image with a Truetype font. It also
1094% returns the bounding box of the text relative to the image.
1095%
1096% The format of the RenderFreetype method is:
1097%
1098% MagickBooleanType RenderFreetype(Image *image,DrawInfo *draw_info,
1099% const char *encoding,const PointInfo *offset,TypeMetric *metrics)
1100%
1101% A description of each parameter follows:
1102%
1103% o image: the image.
1104%
1105% o draw_info: the draw info.
1106%
1107% o encoding: the font encoding.
1108%
1109% o offset: (x,y) location of text relative to image.
1110%
1111% o metrics: bounding box of text.
1112%
1113*/
1114
1115#if defined(MAGICKCORE_FREETYPE_DELEGATE)
1116
1117#if defined(MAGICKCORE_RAQM_DELEGATE)
1118static size_t ComplexRaqmTextLayout(const Image *image,
1119 const DrawInfo *draw_info,const char *text,const size_t length,
1120 const FT_Face face,GraphemeInfo **grapheme,ExceptionInfo *exception)
1121{
1122 const char
1123 *features;
1124
1125 raqm_t
1126 *rq;
1127
1128 raqm_glyph_t
1129 *glyphs;
1130
1131 size_t
1132 extent;
1133
1134 ssize_t
1135 i;
1136
1137 (void) exception;
1138 extent=0;
1139 rq=raqm_create();
1140 if (rq == (raqm_t *) NULL)
1141 goto cleanup;
1142 if (raqm_set_text_utf8(rq,text,length) == 0)
1143 goto cleanup;
1144 if (raqm_set_par_direction(rq,(raqm_direction_t) draw_info->direction) == 0)
1145 goto cleanup;
1146 if (raqm_set_freetype_face(rq,face) == 0)
1147 goto cleanup;
1148 features=GetImageProperty(image,"type:features");
1149 if (features != (const char *) NULL)
1150 {
1151 char
1152 breaker,
1153 quote,
1154 *token;
1155
1156 int
1157 next,
1158 status_token;
1159
1160 TokenInfo
1161 *token_info;
1162
1163 next=0;
1164 token_info=AcquireTokenInfo();
1165 token=AcquireString("");
1166 status_token=Tokenizer(token_info,0,token,50,features,"",",","",'\0',
1167 &breaker,&next,&quote);
1168 while (status_token == 0)
1169 {
1170 raqm_add_font_feature(rq,token,(int) strlen(token));
1171 status_token=Tokenizer(token_info,0,token,50,features,"",",","",'\0',
1172 &breaker,&next,&quote);
1173 }
1174 token_info=DestroyTokenInfo(token_info);
1175 token=DestroyString(token);
1176 }
1177 if (raqm_layout(rq) == 0)
1178 goto cleanup;
1179 glyphs=raqm_get_glyphs(rq,&extent);
1180 if (glyphs == (raqm_glyph_t *) NULL)
1181 {
1182 extent=0;
1183 goto cleanup;
1184 }
1185 *grapheme=(GraphemeInfo *) AcquireQuantumMemory(extent,sizeof(**grapheme));
1186 if (*grapheme == (GraphemeInfo *) NULL)
1187 {
1188 extent=0;
1189 goto cleanup;
1190 }
1191 for (i=0; i < (ssize_t) extent; i++)
1192 {
1193 (*grapheme)[i].index=glyphs[i].index;
1194 (*grapheme)[i].x_offset=(size_t) glyphs[i].x_offset;
1195 (*grapheme)[i].x_advance=(size_t) glyphs[i].x_advance;
1196 (*grapheme)[i].y_offset=(size_t) glyphs[i].y_offset;
1197 (*grapheme)[i].y_advance=(size_t) glyphs[i].y_advance;
1198 (*grapheme)[i].cluster=glyphs[i].cluster;
1199 }
1200
1201cleanup:
1202 raqm_destroy(rq);
1203 return(extent);
1204#else
1205static size_t ComplexTextLayout(const DrawInfo *draw_info,const char *text,
1206 const size_t length,const FT_Face face,const FT_Int32 flags,
1207 GraphemeInfo **grapheme)
1208{
1209 const char
1210 *p;
1211
1212 ssize_t
1213 i;
1214
1215 ssize_t
1216 last_glyph;
1217
1218 /*
1219 Simple layout for bi-directional text (right-to-left or left-to-right).
1220 */
1221 *grapheme=(GraphemeInfo *) AcquireQuantumMemory(length+1,sizeof(**grapheme));
1222 if (*grapheme == (GraphemeInfo *) NULL)
1223 return(0);
1224 last_glyph=0;
1225 p=text;
1226 for (i=0; GetUTFCode(p) != 0; p+=(ptrdiff_t) GetUTFOctets(p), i++)
1227 {
1228 (*grapheme)[i].index=(ssize_t) FT_Get_Char_Index(face,GetUTFCode(p));
1229 (*grapheme)[i].x_offset=0;
1230 (*grapheme)[i].y_offset=0;
1231 if (((*grapheme)[i].index != 0) && (last_glyph != 0))
1232 {
1233 if (FT_HAS_KERNING(face))
1234 {
1235 FT_Error
1236 ft_status;
1237
1238 FT_Vector
1239 kerning;
1240
1241 ft_status=FT_Get_Kerning(face,(FT_UInt) last_glyph,(FT_UInt)
1242 (*grapheme)[i].index,ft_kerning_default,&kerning);
1243 if (ft_status == 0)
1244 (*grapheme)[i-1].x_advance+=(FT_Pos) ((draw_info->direction ==
1245 RightToLeftDirection ? -1.0 : 1.0)*kerning.x);
1246 }
1247 }
1248 (void) FT_Load_Glyph(face,(FT_UInt) (*grapheme)[i].index,flags);
1249 (*grapheme)[i].x_advance=face->glyph->advance.x;
1250 (*grapheme)[i].y_advance=face->glyph->advance.y;
1251 (*grapheme)[i].cluster=p-text;
1252 last_glyph=(*grapheme)[i].index;
1253 }
1254 return((size_t) i);
1255#endif
1256}
1257
1258static void FTCloseStream(FT_Stream stream)
1259{
1260 FILE *file = (FILE *) stream->descriptor.pointer;
1261 if (file != (FILE *) NULL)
1262 (void) fclose(file);
1263 stream->descriptor.pointer=NULL;
1264}
1265
1266static unsigned long FTReadStream(FT_Stream stream,unsigned long offset,
1267 unsigned char *buffer,unsigned long count)
1268{
1269 FILE *file = (FILE *) stream->descriptor.pointer;
1270 if (file == (FILE *) NULL)
1271 return(0);
1272 if (count == 0) /* seek operation */
1273 {
1274 if (offset > stream->size)
1275 return(1);
1276
1277 return((unsigned long) fseek(file,(off_t) offset,SEEK_SET));
1278 }
1279 return((unsigned long) fread(buffer,1,count,file));
1280}
1281
1282static inline MagickBooleanType IsEmptyOutline(FT_Outline outline)
1283{
1284 return((outline.n_points == 0) || (outline.n_contours <= 0) ? MagickTrue :
1285 MagickFalse);
1286}
1287
1288static int TraceCubicBezier(FT_Vector *p,FT_Vector *q,FT_Vector *to,
1289 DrawInfo *draw_info)
1290{
1291 AffineMatrix
1292 affine;
1293
1294 char
1295 path[MaxTextExtent];
1296
1297 affine=draw_info->affine;
1298 (void) FormatLocaleString(path,MaxTextExtent,"C%g,%g %g,%g %g,%g",affine.tx+
1299 p->x/64.0,affine.ty-p->y/64.0,affine.tx+q->x/64.0,affine.ty-q->y/64.0,
1300 affine.tx+to->x/64.0,affine.ty-to->y/64.0);
1301 (void) ConcatenateString(&draw_info->primitive,path);
1302 return(0);
1303}
1304
1305static int TraceLineTo(FT_Vector *to,DrawInfo *draw_info)
1306{
1307 AffineMatrix
1308 affine;
1309
1310 char
1311 path[MaxTextExtent];
1312
1313 affine=draw_info->affine;
1314 (void) FormatLocaleString(path,MaxTextExtent,"L%g,%g",affine.tx+to->x/64.0,
1315 affine.ty-to->y/64.0);
1316 (void) ConcatenateString(&draw_info->primitive,path);
1317 return(0);
1318}
1319
1320static int TraceMoveTo(FT_Vector *to,DrawInfo *draw_info)
1321{
1322 AffineMatrix
1323 affine;
1324
1325 char
1326 path[MaxTextExtent];
1327
1328 affine=draw_info->affine;
1329 (void) FormatLocaleString(path,MaxTextExtent,"M%g,%g",affine.tx+to->x/64.0,
1330 affine.ty-to->y/64.0);
1331 (void) ConcatenateString(&draw_info->primitive,path);
1332 return(0);
1333}
1334
1335static int TraceQuadraticBezier(FT_Vector *control,FT_Vector *to,
1336 DrawInfo *draw_info)
1337{
1338 AffineMatrix
1339 affine;
1340
1341 char
1342 path[MaxTextExtent];
1343
1344 affine=draw_info->affine;
1345 (void) FormatLocaleString(path,MaxTextExtent,"Q%g,%g %g,%g",affine.tx+
1346 control->x/64.0,affine.ty-control->y/64.0,affine.tx+to->x/64.0,affine.ty-
1347 to->y/64.0);
1348 (void) ConcatenateString(&draw_info->primitive,path);
1349 return(0);
1350}
1351
1352static inline const char *FreetypeErrorMessage(FT_Error ft_status)
1353{
1354#if FREETYPE_MAJOR == 2 && FREETYPE_MINOR >= 10
1355 return(FT_Error_String(ft_status));
1356#else
1357 magick_unreferenced(ft_status);
1358 return((const char *) NULL);
1359#endif
1360}
1361
1362static MagickBooleanType RenderFreetype(Image *image,const DrawInfo *draw_info,
1363 const char *encoding,const PointInfo *offset,TypeMetric *metrics)
1364{
1365#if !defined(FT_OPEN_PATHNAME)
1366#define FT_OPEN_PATHNAME ft_open_pathname
1367#endif
1368
1369#define ThrowFreetypeErrorException(tag,ft_status,value) \
1370{ \
1371 const char \
1372 *error_string=FreetypeErrorMessage(ft_status); \
1373 if (error_string != (const char *) NULL) \
1374 (void) ThrowMagickException(exception,GetMagickModule(),TypeError, \
1375 tag,"`%s (%s)'",value, error_string); \
1376 else \
1377 (void) ThrowMagickException(exception,GetMagickModule(),TypeError, \
1378 tag,"`%s'",value); \
1379}
1380
1381 typedef struct _GlyphInfo
1382 {
1383 FT_UInt
1384 id;
1385
1386 FT_Vector
1387 origin;
1388
1389 FT_Glyph
1390 image;
1391 } GlyphInfo;
1392
1393 char
1394 *p;
1395
1396 const char
1397 *value;
1398
1399 DrawInfo
1400 *annotate_info;
1401
1402 ExceptionInfo
1403 *exception;
1404
1405 FT_BBox
1406 bounds;
1407
1408 FT_Encoding
1409 encoding_type;
1410
1411 FT_Error
1412 ft_status;
1413
1414 FT_Face
1415 face;
1416
1417 FT_Int32
1418 flags;
1419
1420 FT_Library
1421 library;
1422
1423 FT_Long
1424 face_index;
1425
1426 FT_Matrix
1427 affine;
1428
1429 FT_Open_Args
1430 args;
1431
1432 FT_StreamRec
1433 *stream;
1434
1435 FT_UInt
1436 first_glyph_id,
1437 last_glyph_id,
1438 missing_glyph_id;
1439
1440 FT_Vector
1441 origin;
1442
1443 GlyphInfo
1444 glyph;
1445
1446 GraphemeInfo
1447 *grapheme;
1448
1449 MagickBooleanType
1450 status;
1451
1452 PointInfo
1453 resolution;
1454
1455 ssize_t
1456 i;
1457
1458 size_t
1459 length;
1460
1461 ssize_t
1462 code,
1463 last_character,
1464 y;
1465
1466 static FT_Outline_Funcs
1467 OutlineMethods =
1468 {
1469 (FT_Outline_MoveTo_Func) TraceMoveTo,
1470 (FT_Outline_LineTo_Func) TraceLineTo,
1471 (FT_Outline_ConicTo_Func) TraceQuadraticBezier,
1472 (FT_Outline_CubicTo_Func) TraceCubicBezier,
1473 0, 0
1474 };
1475
1476 struct stat
1477 attributes;
1478
1479 unsigned char
1480 *utf8;
1481
1482 /*
1483 Initialize Truetype library.
1484 */
1485 exception=(&image->exception);
1486 ft_status=FT_Init_FreeType(&library);
1487 if (ft_status != 0)
1488 ThrowFreetypeErrorException("UnableToInitializeFreetypeLibrary",ft_status,
1489 image->filename);
1490 face_index=(FT_Long) draw_info->face;
1491 /*
1492 Open font face.
1493 */
1494 (void) memset(&args,0,sizeof(args));
1495 if (draw_info->font == (char *) NULL)
1496 {
1497 const TypeInfo *type_info = GetTypeInfo("*",exception);
1498 if (type_info != (const TypeInfo *) NULL)
1499 args.pathname=ConstantString(type_info->glyphs);
1500 }
1501 else
1502 if (*draw_info->font != '@')
1503 args.pathname=ConstantString(draw_info->font);
1504 else
1505 {
1506 /*
1507 Extract face index, e.g. @msgothic[1].
1508 */
1509 ImageInfo *image_info=AcquireImageInfo();
1510 (void) CopyMagickString(image_info->filename,draw_info->font+1,
1511 MagickPathExtent);
1512 (void) SetImageInfo(image_info,0,exception);
1513 face_index=(FT_Long) image_info->scene;
1514 args.pathname=ConstantString(image_info->filename);
1515 image_info=DestroyImageInfo(image_info);
1516 }
1517 /*
1518 Configure streaming interface.
1519 */
1520 stream=(FT_StreamRec *) AcquireCriticalMemory(sizeof(*stream));
1521 (void) memset(stream,0,sizeof(*stream));
1522 if (stat(args.pathname,&attributes) == 0)
1523 stream->size=attributes.st_size >= 0 ? (unsigned long)
1524 attributes.st_size : 0;
1525 stream->descriptor.pointer=fopen_utf8(args.pathname,"rb");
1526 stream->read=(&FTReadStream);
1527 stream->close=(&FTCloseStream);
1528 args.flags=FT_OPEN_STREAM;
1529 args.stream=stream;
1530 face=(FT_Face) NULL;
1531 ft_status=FT_Open_Face(library,&args,face_index,&face);
1532 if (ft_status != 0)
1533 {
1534 (void) FT_Done_FreeType(library);
1535 stream=(FT_StreamRec *) RelinquishMagickMemory(stream);
1536 ThrowFreetypeErrorException("UnableToReadFont",ft_status,args.pathname);
1537 args.pathname=DestroyString(args.pathname);
1538 return(MagickFalse);
1539 }
1540 args.pathname=DestroyString(args.pathname);
1541 if ((draw_info->metrics != (char *) NULL) &&
1542 (IsPathAccessible(draw_info->metrics) != MagickFalse))
1543 (void) FT_Attach_File(face,draw_info->metrics);
1544 encoding_type=FT_ENCODING_UNICODE;
1545 ft_status=FT_Select_Charmap(face,encoding_type);
1546 if ((ft_status != 0) && (face->num_charmaps != 0))
1547 ft_status=FT_Set_Charmap(face,face->charmaps[0]);
1548 if (encoding != (const char *) NULL)
1549 {
1550 if (LocaleCompare(encoding,"AdobeCustom") == 0)
1551 encoding_type=FT_ENCODING_ADOBE_CUSTOM;
1552 if (LocaleCompare(encoding,"AdobeExpert") == 0)
1553 encoding_type=FT_ENCODING_ADOBE_EXPERT;
1554 if (LocaleCompare(encoding,"AdobeStandard") == 0)
1555 encoding_type=FT_ENCODING_ADOBE_STANDARD;
1556 if (LocaleCompare(encoding,"AppleRoman") == 0)
1557 encoding_type=FT_ENCODING_APPLE_ROMAN;
1558 if (LocaleCompare(encoding,"BIG5") == 0)
1559 encoding_type=FT_ENCODING_BIG5;
1560#if defined(FT_ENCODING_PRC)
1561 if (LocaleCompare(encoding,"GB2312") == 0)
1562 encoding_type=FT_ENCODING_PRC;
1563#endif
1564#if defined(FT_ENCODING_JOHAB)
1565 if (LocaleCompare(encoding,"Johab") == 0)
1566 encoding_type=FT_ENCODING_JOHAB;
1567#endif
1568#if defined(FT_ENCODING_ADOBE_LATIN_1)
1569 if (LocaleCompare(encoding,"Latin-1") == 0)
1570 encoding_type=FT_ENCODING_ADOBE_LATIN_1;
1571#endif
1572#if defined(FT_ENCODING_ADOBE_LATIN_2)
1573 if (LocaleCompare(encoding,"Latin-2") == 0)
1574 encoding_type=FT_ENCODING_OLD_LATIN_2;
1575#endif
1576 if (LocaleCompare(encoding,"None") == 0)
1577 encoding_type=FT_ENCODING_NONE;
1578 if (LocaleCompare(encoding,"SJIScode") == 0)
1579 encoding_type=FT_ENCODING_SJIS;
1580 if (LocaleCompare(encoding,"Symbol") == 0)
1581 encoding_type=FT_ENCODING_MS_SYMBOL;
1582 if (LocaleCompare(encoding,"Unicode") == 0)
1583 encoding_type=FT_ENCODING_UNICODE;
1584 if (LocaleCompare(encoding,"Wansung") == 0)
1585 encoding_type=FT_ENCODING_WANSUNG;
1586 ft_status=FT_Select_Charmap(face,encoding_type);
1587 if (ft_status != 0)
1588 {
1589 (void) FT_Done_Face(face);
1590 (void) FT_Done_FreeType(library);
1591 stream=(FT_StreamRec *) RelinquishMagickMemory(stream);
1592 ThrowFreetypeErrorException("UnrecognizedFontEncoding",ft_status,
1593 encoding);
1594 return(MagickFalse);
1595 }
1596 }
1597 /*
1598 Set text size.
1599 */
1600 resolution.x=DefaultResolution;
1601 resolution.y=DefaultResolution;
1602 if (draw_info->density != (char *) NULL)
1603 {
1604 GeometryInfo
1605 geometry_info;
1606
1607 MagickStatusType
1608 flags;
1609
1610 flags=ParseGeometry(draw_info->density,&geometry_info);
1611 if ((flags & RhoValue) != 0)
1612 resolution.x=geometry_info.rho;
1613 resolution.y=resolution.x;
1614 if ((flags & SigmaValue) != 0)
1615 resolution.y=geometry_info.sigma;
1616 }
1617 ft_status=FT_Set_Char_Size(face,(FT_F26Dot6) (64.0*draw_info->pointsize),
1618 (FT_F26Dot6) (64.0*draw_info->pointsize),(FT_UInt) resolution.x,
1619 (FT_UInt) resolution.y);
1620 if (ft_status != 0)
1621 {
1622 (void) FT_Done_Face(face);
1623 (void) FT_Done_FreeType(library);
1624 stream=(FT_StreamRec *) RelinquishMagickMemory(stream);
1625 ThrowFreetypeErrorException("UnableToReadFont",ft_status,
1626 draw_info->font);
1627 return(MagickFalse);
1628 }
1629 metrics->pixels_per_em.x=face->size->metrics.x_ppem;
1630 metrics->pixels_per_em.y=face->size->metrics.y_ppem;
1631 metrics->ascent=(double) face->size->metrics.ascender/64.0;
1632 metrics->descent=(double) face->size->metrics.descender/64.0;
1633 if (face->size->metrics.ascender == 0)
1634 {
1635 /*
1636 Sanitize buggy ascender and descender values.
1637 */
1638 metrics->ascent=face->size->metrics.y_ppem;
1639 if (face->size->metrics.descender == 0)
1640 metrics->descent=face->size->metrics.y_ppem/-3.5;
1641 }
1642 metrics->width=0;
1643 metrics->origin.x=0;
1644 metrics->origin.y=0;
1645 metrics->height=(double) face->size->metrics.height/64.0;
1646 metrics->max_advance=0.0;
1647 if (face->size->metrics.max_advance > MagickEpsilon)
1648 metrics->max_advance=(double) face->size->metrics.max_advance/64.0;
1649 metrics->bounds.x1=0.0;
1650 metrics->bounds.y1=metrics->descent;
1651 metrics->bounds.x2=metrics->ascent+metrics->descent;
1652 metrics->bounds.y2=metrics->ascent+metrics->descent;
1653 metrics->underline_position=face->underline_position*
1654 (metrics->pixels_per_em.x*MagickSafeReciprocal(face->units_per_EM));
1655 metrics->underline_thickness=face->underline_thickness*
1656 (metrics->pixels_per_em.x*MagickSafeReciprocal(face->units_per_EM));
1657 first_glyph_id=0;
1658 FT_Get_First_Char(face,&first_glyph_id);
1659 if ((draw_info->text == (char *) NULL) || (*draw_info->text == '\0') ||
1660 (first_glyph_id == 0))
1661 {
1662 (void) FT_Done_Face(face);
1663 (void) FT_Done_FreeType(library);
1664 stream=(FT_StreamRec *) RelinquishMagickMemory(stream);
1665 return(MagickTrue);
1666 }
1667 /*
1668 Compute bounding box.
1669 */
1670 if (draw_info->debug != MagickFalse)
1671 (void) LogMagickEvent(AnnotateEvent,GetMagickModule(),"Font %s; "
1672 "font-encoding %s; text-encoding %s; pointsize %g",
1673 draw_info->font != (char *) NULL ? draw_info->font : "none",
1674 encoding != (char *) NULL ? encoding : "none",
1675 draw_info->encoding != (char *) NULL ? draw_info->encoding : "none",
1676 draw_info->pointsize);
1677 flags=FT_LOAD_DEFAULT;
1678 if (draw_info->render == MagickFalse)
1679 flags=FT_LOAD_NO_BITMAP;
1680 if (draw_info->text_antialias == MagickFalse)
1681 flags|=FT_LOAD_TARGET_MONO;
1682 else
1683 {
1684#if defined(FT_LOAD_TARGET_LIGHT)
1685 flags|=FT_LOAD_TARGET_LIGHT;
1686#elif defined(FT_LOAD_TARGET_LCD)
1687 flags|=FT_LOAD_TARGET_LCD;
1688#endif
1689 }
1690 value=GetImageProperty(image,"type:hinting");
1691 if ((value != (const char *) NULL) && (LocaleCompare(value,"off") == 0))
1692 flags|=FT_LOAD_NO_HINTING;
1693 glyph.id=0;
1694 glyph.image=(FT_Glyph) NULL;
1695 last_glyph_id=0;
1696 origin.x=0;
1697 origin.y=0;
1698 affine.xx=65536L;
1699 affine.yx=0L;
1700 affine.xy=0L;
1701 affine.yy=65536L;
1702 if (draw_info->render != MagickFalse)
1703 {
1704 affine.xx=(FT_Fixed) (65536L*draw_info->affine.sx+0.5);
1705 affine.yx=(FT_Fixed) (-65536L*draw_info->affine.rx+0.5);
1706 affine.xy=(FT_Fixed) (-65536L*draw_info->affine.ry+0.5);
1707 affine.yy=(FT_Fixed) (65536L*draw_info->affine.sy+0.5);
1708 }
1709 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1710 if (annotate_info->dash_pattern != (double *) NULL)
1711 annotate_info->dash_pattern[0]=0.0;
1712 (void) CloneString(&annotate_info->primitive,"path '");
1713 status=MagickTrue;
1714 if (draw_info->render != MagickFalse)
1715 {
1716 if (image->storage_class != DirectClass)
1717 (void) SetImageStorageClass(image,DirectClass);
1718 if (image->matte == MagickFalse)
1719 (void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
1720 }
1721 for (p=draw_info->text; GetUTFCode(p) != 0; p+=(ptrdiff_t) GetUTFOctets(p))
1722 if (GetUTFCode(p) < 0)
1723 break;
1724 utf8=(unsigned char *) NULL;
1725 if (GetUTFCode(p) == 0)
1726 p=draw_info->text;
1727 else
1728 {
1729 utf8=ConvertLatin1ToUTF8((unsigned char *) draw_info->text);
1730 if (utf8 != (unsigned char *) NULL)
1731 p=(char *) utf8;
1732 }
1733 grapheme=(GraphemeInfo *) NULL;
1734#if defined(MAGICKCORE_RAQM_DELEGATE)
1735 length=ComplexRaqmTextLayout(image,draw_info,p,strlen(p),face,&grapheme,
1736 exception);
1737#else
1738 length=ComplexTextLayout(draw_info,p,strlen(p),face,flags,&grapheme);
1739#endif
1740 missing_glyph_id=FT_Get_Char_Index(face,' ');
1741 code=0;
1742 last_character=(ssize_t) length-1;
1743 for (i=0; i < (ssize_t) length; i++)
1744 {
1745 FT_BitmapGlyph
1746 bitmap;
1747
1748 FT_Outline
1749 outline;
1750
1751 PointInfo
1752 point;
1753
1754 /*
1755 Render UTF-8 sequence.
1756 */
1757 glyph.id=grapheme[i].index;
1758 if (glyph.id == 0)
1759 glyph.id=missing_glyph_id;
1760 if ((glyph.id != 0) && (last_glyph_id != 0))
1761 origin.x+=(FT_Pos) (64.0*draw_info->kerning);
1762 glyph.origin=origin;
1763 glyph.origin.x+=grapheme[i].x_offset;
1764 glyph.origin.y+=grapheme[i].y_offset;
1765 if (glyph.image != (FT_Glyph) NULL)
1766 {
1767 FT_Done_Glyph(glyph.image);
1768 glyph.image=(FT_Glyph) NULL;
1769 }
1770 ft_status=FT_Load_Glyph(face,glyph.id,flags);
1771 if (ft_status != 0)
1772 continue;
1773 ft_status=FT_Get_Glyph(face->glyph,&glyph.image);
1774 if (ft_status != 0)
1775 continue;
1776 outline=((FT_OutlineGlyph) glyph.image)->outline;
1777 if ((glyph.image->format != FT_GLYPH_FORMAT_OUTLINE) &&
1778 (IsEmptyOutline(outline) == MagickFalse))
1779 continue;
1780 ft_status=FT_Outline_Get_BBox(&outline,&bounds);
1781 if (ft_status != 0)
1782 continue;
1783 if ((bounds.xMin < metrics->bounds.x1) && (bounds.xMin != 0))
1784 metrics->bounds.x1=(double) bounds.xMin;
1785 if ((bounds.yMin < metrics->bounds.y1) && (bounds.yMin != 0))
1786 metrics->bounds.y1=(double) bounds.yMin;
1787 if ((bounds.xMax > metrics->bounds.x2) && (bounds.xMax != 0))
1788 metrics->bounds.x2=(double) bounds.xMax;
1789 if ((bounds.yMax > metrics->bounds.y2) && (bounds.yMax != 0))
1790 metrics->bounds.y2=(double) bounds.yMax;
1791 if (((draw_info->stroke.opacity != TransparentOpacity) ||
1792 (draw_info->stroke_pattern != (Image *) NULL)) &&
1793 ((status != MagickFalse) && (draw_info->render != MagickFalse)))
1794 {
1795 /*
1796 Trace the glyph.
1797 */
1798 annotate_info->affine.tx=glyph.origin.x/64.0;
1799 annotate_info->affine.ty=(-glyph.origin.y/64.0);
1800 if (IsEmptyOutline(outline) == MagickFalse)
1801 ft_status=FT_Outline_Decompose(&outline,&OutlineMethods,
1802 annotate_info);
1803 }
1804 FT_Vector_Transform(&glyph.origin,&affine);
1805 (void) FT_Glyph_Transform(glyph.image,&affine,&glyph.origin);
1806 ft_status=FT_Glyph_To_Bitmap(&glyph.image,FT_RENDER_MODE_NORMAL,
1807 (FT_Vector *) NULL,MagickTrue);
1808 if (ft_status != 0)
1809 continue;
1810 bitmap=(FT_BitmapGlyph) glyph.image;
1811 point.x=offset->x+bitmap->left;
1812 if (bitmap->bitmap.pixel_mode == ft_pixel_mode_mono)
1813 point.x+=(origin.x/64.0);
1814 point.y=offset->y-bitmap->top;
1815 if (draw_info->render != MagickFalse)
1816 {
1817 CacheView
1818 *image_view;
1819
1820 unsigned char
1821 *p;
1822
1823 MagickBooleanType
1824 transparent_fill;
1825
1826 /*
1827 Rasterize the glyph.
1828 */
1829 transparent_fill=((draw_info->fill.opacity == TransparentOpacity) &&
1830 (draw_info->fill_pattern == (Image *) NULL) &&
1831 (draw_info->stroke.opacity == TransparentOpacity) &&
1832 (draw_info->stroke_pattern == (Image *) NULL)) ? MagickTrue :
1833 MagickFalse;
1834 p=bitmap->bitmap.buffer;
1835 image_view=AcquireAuthenticCacheView(image,exception);
1836#if defined(MAGICKCORE_OPENMP_SUPPORT)
1837 #pragma omp parallel for schedule(static) shared(status) \
1838 magick_number_threads(image,image,bitmap->bitmap.rows,4)
1839#endif
1840 for (y=0; y < (ssize_t) bitmap->bitmap.rows; y++)
1841 {
1842 MagickBooleanType
1843 active,
1844 sync;
1845
1846 MagickRealType
1847 fill_opacity;
1848
1849 PixelPacket
1850 fill_color,
1851 *magick_restrict q;
1852
1853 ssize_t
1854 x;
1855
1856 ssize_t
1857 n,
1858 x_offset,
1859 y_offset;
1860
1861 if (status == MagickFalse)
1862 continue;
1863 x_offset=CastDoubleToLong(ceil(point.x-0.5));
1864 y_offset=CastDoubleToLong(ceil(point.y+y-0.5));
1865 if ((y_offset < 0) || (y_offset >= (ssize_t) image->rows))
1866 continue;
1867 q=(PixelPacket *) NULL;
1868 if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns))
1869 active=MagickFalse;
1870 else
1871 {
1872 q=GetCacheViewAuthenticPixels(image_view,x_offset,y_offset,
1873 bitmap->bitmap.width,1,exception);
1874 active=q != (PixelPacket *) NULL ? MagickTrue : MagickFalse;
1875 }
1876 n=y*bitmap->bitmap.pitch;
1877 for (x=0; x < (ssize_t) bitmap->bitmap.width; x++, n++)
1878 {
1879 x_offset=CastDoubleToLong(ceil(point.x+x-0.5));
1880 if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns))
1881 {
1882 if (q != (PixelPacket *) NULL)
1883 q++;
1884 continue;
1885 }
1886 fill_opacity=1.0;
1887 if (bitmap->bitmap.buffer != (unsigned char *) NULL)
1888 {
1889 if (bitmap->bitmap.pixel_mode == ft_pixel_mode_grays)
1890 fill_opacity=(MagickRealType) (p[n])/(
1891 bitmap->bitmap.num_grays-1);
1892 else
1893 if (bitmap->bitmap.pixel_mode == ft_pixel_mode_mono)
1894 fill_opacity=((p[(x >> 3)+y*bitmap->bitmap.pitch] &
1895 (1 << (~x & 0x07)))) == 0 ? 0.0 : 1.0;
1896 }
1897 if (draw_info->text_antialias == MagickFalse)
1898 fill_opacity=fill_opacity >= 0.5 ? 1.0 : 0.0;
1899 if (active == MagickFalse)
1900 q=GetCacheViewAuthenticPixels(image_view,x_offset,y_offset,1,1,
1901 exception);
1902 if (q == (PixelPacket *) NULL)
1903 continue;
1904 if (transparent_fill == MagickFalse)
1905 {
1906 (void) GetFillColor(draw_info,x_offset,y_offset,&fill_color);
1907 fill_opacity=(double) QuantumRange-(double) fill_opacity*
1908 ((double) QuantumRange-(double) fill_color.opacity);
1909 MagickCompositeOver(&fill_color,fill_opacity,q,q->opacity,q);
1910 }
1911 else
1912 {
1913 double
1914 Sa,
1915 Da;
1916
1917 Da=1.0-(QuantumScale*((double) QuantumRange-(double)
1918 q->opacity));
1919 Sa=fill_opacity;
1920 fill_opacity=(1.0-RoundToUnity(Sa+Da-Sa*Da))*(double)
1921 QuantumRange;
1922 SetPixelAlpha(q,fill_opacity);
1923 }
1924 if (active == MagickFalse)
1925 {
1926 sync=SyncCacheViewAuthenticPixels(image_view,exception);
1927 if (sync == MagickFalse)
1928 status=MagickFalse;
1929 }
1930 q++;
1931 }
1932 sync=SyncCacheViewAuthenticPixels(image_view,exception);
1933 if (sync == MagickFalse)
1934 status=MagickFalse;
1935 }
1936 image_view=DestroyCacheView(image_view);
1937 if (((draw_info->stroke.opacity != TransparentOpacity) ||
1938 (draw_info->stroke_pattern != (Image *) NULL)) &&
1939 (status != MagickFalse))
1940 {
1941 /*
1942 Draw text stroke.
1943 */
1944 annotate_info->linejoin=RoundJoin;
1945 annotate_info->affine.tx=offset->x;
1946 annotate_info->affine.ty=offset->y;
1947 (void) ConcatenateString(&annotate_info->primitive,"'");
1948 if (strlen(annotate_info->primitive) > 7)
1949 (void) DrawImage(image,annotate_info);
1950 (void) CloneString(&annotate_info->primitive,"path '");
1951 }
1952 }
1953 if ((fabs(draw_info->interword_spacing) >= MagickEpsilon) &&
1954 (IsUTFSpace(GetUTFCode(p+grapheme[i].cluster)) != MagickFalse) &&
1955 (IsUTFSpace(code) == MagickFalse))
1956 origin.x+=(FT_Pos) (64.0*draw_info->interword_spacing);
1957 else
1958 if (i == last_character)
1959 origin.x+=MagickMax((FT_Pos) grapheme[i].x_advance,bounds.xMax);
1960 else
1961 origin.x+=(FT_Pos) grapheme[i].x_advance;
1962 origin.y+=(FT_Pos) grapheme[i].y_advance;
1963 metrics->origin.x=(double) origin.x;
1964 metrics->origin.y=(double) origin.y;
1965 if (metrics->origin.x > metrics->width)
1966 metrics->width=metrics->origin.x;
1967 last_glyph_id=glyph.id;
1968 code=GetUTFCode(p+grapheme[i].cluster);
1969 }
1970 if (grapheme != (GraphemeInfo *) NULL)
1971 grapheme=(GraphemeInfo *) RelinquishMagickMemory(grapheme);
1972 if (utf8 != (unsigned char *) NULL)
1973 utf8=(unsigned char *) RelinquishMagickMemory(utf8);
1974 if (glyph.image != (FT_Glyph) NULL)
1975 {
1976 FT_Done_Glyph(glyph.image);
1977 glyph.image=(FT_Glyph) NULL;
1978 }
1979 /*
1980 Determine font metrics.
1981 */
1982 metrics->bounds.x1/=64.0;
1983 metrics->bounds.y1/=64.0;
1984 metrics->bounds.x2/=64.0;
1985 metrics->bounds.y2/=64.0;
1986 metrics->origin.x/=64.0;
1987 metrics->origin.y/=64.0;
1988 metrics->width/=64.0;
1989 /*
1990 Relinquish resources.
1991 */
1992 annotate_info=DestroyDrawInfo(annotate_info);
1993 (void) FT_Done_Face(face);
1994 (void) FT_Done_FreeType(library);
1995 stream=(FT_StreamRec *) RelinquishMagickMemory(stream);
1996 return(status);
1997}
1998#else
1999static MagickBooleanType RenderFreetype(Image *image,const DrawInfo *draw_info,
2000 const char *magick_unused(encoding),const PointInfo *offset,
2001 TypeMetric *metrics)
2002{
2003 (void) ThrowMagickException(&image->exception,GetMagickModule(),
2004 MissingDelegateWarning,"DelegateLibrarySupportNotBuiltIn","`%s' (Freetype)",
2005 draw_info->font != (char *) NULL ? draw_info->font : "none");
2006 return(RenderPostscript(image,draw_info,offset,metrics));
2007}
2008#endif
2009␌
2010/*
2011%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2012% %
2013% %
2014% %
2015+ R e n d e r P o s t s c r i p t %
2016% %
2017% %
2018% %
2019%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2020%
2021% RenderPostscript() renders text on the image with a Postscript font. It
2022% also returns the bounding box of the text relative to the image.
2023%
2024% The format of the RenderPostscript method is:
2025%
2026% MagickBooleanType RenderPostscript(Image *image,DrawInfo *draw_info,
2027% const PointInfo *offset,TypeMetric *metrics)
2028%
2029% A description of each parameter follows:
2030%
2031% o image: the image.
2032%
2033% o draw_info: the draw info.
2034%
2035% o offset: (x,y) location of text relative to image.
2036%
2037% o metrics: bounding box of text.
2038%
2039*/
2040
2041static char *EscapeParenthesis(const char *source)
2042{
2043 char
2044 *destination;
2045
2046 char
2047 *q;
2048
2049 const char
2050 *p;
2051
2052 size_t
2053 length;
2054
2055 assert(source != (const char *) NULL);
2056 length=0;
2057 for (p=source; *p != '\0'; p++)
2058 {
2059 if ((*p == '\\') || (*p == '(') || (*p == ')'))
2060 {
2061 if (~length < 1)
2062 ThrowFatalException(ResourceLimitFatalError,"UnableToEscapeString");
2063 length++;
2064 }
2065 length++;
2066 }
2067 destination=(char *) NULL;
2068 if (~length >= (MaxTextExtent-1))
2069 destination=(char *) AcquireQuantumMemory(length+MaxTextExtent,
2070 sizeof(*destination));
2071 if (destination == (char *) NULL)
2072 ThrowFatalException(ResourceLimitFatalError,"UnableToEscapeString");
2073 *destination='\0';
2074 q=destination;
2075 for (p=source; *p != '\0'; p++)
2076 {
2077 if ((*p == '\\') || (*p == '(') || (*p == ')'))
2078 *q++='\\';
2079 *q++=(*p);
2080 }
2081 *q='\0';
2082 return(destination);
2083}
2084
2085static MagickBooleanType RenderPostscript(Image *image,
2086 const DrawInfo *draw_info,const PointInfo *offset,TypeMetric *metrics)
2087{
2088 char
2089 filename[MaxTextExtent],
2090 geometry[MaxTextExtent],
2091 *text;
2092
2093 FILE
2094 *file;
2095
2096 Image
2097 *annotate_image;
2098
2099 ImageInfo
2100 *annotate_info;
2101
2102 int
2103 unique_file;
2104
2105 MagickBooleanType
2106 identity,
2107 status;
2108
2109 PointInfo
2110 extent,
2111 point,
2112 resolution;
2113
2114 ssize_t
2115 i;
2116
2117 size_t
2118 length;
2119
2120 ssize_t
2121 y;
2122
2123 /*
2124 Render label with a Postscript font.
2125 */
2126 if (draw_info->debug != MagickFalse)
2127 (void) LogMagickEvent(AnnotateEvent,GetMagickModule(),
2128 "Font %s; pointsize %g",draw_info->font != (char *) NULL ?
2129 draw_info->font : "none",draw_info->pointsize);
2130 file=(FILE *) NULL;
2131 unique_file=AcquireUniqueFileResource(filename);
2132 if (unique_file != -1)
2133 file=fdopen(unique_file,"wb");
2134 if ((unique_file == -1) || (file == (FILE *) NULL))
2135 {
2136 ThrowFileException(&image->exception,FileOpenError,"UnableToOpenFile",
2137 filename);
2138 return(MagickFalse);
2139 }
2140 (void) FormatLocaleFile(file,"%%!PS-Adobe-3.0\n");
2141 (void) FormatLocaleFile(file,"/ReencodeType\n");
2142 (void) FormatLocaleFile(file,"{\n");
2143 (void) FormatLocaleFile(file," findfont dup length\n");
2144 (void) FormatLocaleFile(file,
2145 " dict begin { 1 index /FID ne {def} {pop pop} ifelse } forall\n");
2146 (void) FormatLocaleFile(file,
2147 " /Encoding ISOLatin1Encoding def currentdict end definefont pop\n");
2148 (void) FormatLocaleFile(file,"} bind def\n");
2149 /*
2150 Sample to compute bounding box.
2151 */
2152 identity=(fabs(draw_info->affine.sx-draw_info->affine.sy) < MagickEpsilon) &&
2153 (fabs(draw_info->affine.rx) < MagickEpsilon) &&
2154 (fabs(draw_info->affine.ry) < MagickEpsilon) ? MagickTrue : MagickFalse;
2155 extent.x=0.0;
2156 extent.y=0.0;
2157 length=strlen(draw_info->text);
2158 for (i=0; i <= (ssize_t) (length+2); i++)
2159 {
2160 point.x=fabs(draw_info->affine.sx*i*draw_info->pointsize+
2161 draw_info->affine.ry*2.0*draw_info->pointsize);
2162 point.y=fabs(draw_info->affine.rx*i*draw_info->pointsize+
2163 draw_info->affine.sy*2.0*draw_info->pointsize);
2164 if (point.x > extent.x)
2165 extent.x=point.x;
2166 if (point.y > extent.y)
2167 extent.y=point.y;
2168 }
2169 (void) FormatLocaleFile(file,"%g %g moveto\n",identity != MagickFalse ? 0.0 :
2170 extent.x/2.0,extent.y/2.0);
2171 (void) FormatLocaleFile(file,"%g %g scale\n",draw_info->pointsize,
2172 draw_info->pointsize);
2173 if ((draw_info->font == (char *) NULL) || (*draw_info->font == '\0') ||
2174 (strchr(draw_info->font,'/') != (char *) NULL))
2175 (void) FormatLocaleFile(file,
2176 "/Times-Roman-ISO dup /Times-Roman ReencodeType findfont setfont\n");
2177 else
2178 (void) FormatLocaleFile(file,
2179 "/%s-ISO dup /%s ReencodeType findfont setfont\n",draw_info->font,
2180 draw_info->font);
2181 (void) FormatLocaleFile(file,"[%g %g %g %g 0 0] concat\n",
2182 draw_info->affine.sx,-draw_info->affine.rx,-draw_info->affine.ry,
2183 draw_info->affine.sy);
2184 text=EscapeParenthesis(draw_info->text);
2185 if (identity == MagickFalse)
2186 (void) FormatLocaleFile(file,"(%s) stringwidth pop -0.5 mul -0.5 rmoveto\n",
2187 text);
2188 (void) FormatLocaleFile(file,"(%s) show\n",text);
2189 text=DestroyString(text);
2190 (void) FormatLocaleFile(file,"showpage\n");
2191 (void) fclose(file);
2192 (void) FormatLocaleString(geometry,MaxTextExtent,"%.20gx%.20g+0+0!",
2193 floor(extent.x+0.5),floor(extent.y+0.5));
2194 annotate_info=AcquireImageInfo();
2195 (void) FormatLocaleString(annotate_info->filename,MaxTextExtent,"ps:%s",
2196 filename);
2197 (void) CloneString(&annotate_info->page,geometry);
2198 if (draw_info->density != (char *) NULL)
2199 (void) CloneString(&annotate_info->density,draw_info->density);
2200 annotate_info->antialias=draw_info->text_antialias;
2201 annotate_image=ReadImage(annotate_info,&image->exception);
2202 CatchException(&image->exception);
2203 annotate_info=DestroyImageInfo(annotate_info);
2204 (void) RelinquishUniqueFileResource(filename);
2205 if (annotate_image == (Image *) NULL)
2206 return(MagickFalse);
2207 resolution.x=DefaultResolution;
2208 resolution.y=DefaultResolution;
2209 if (draw_info->density != (char *) NULL)
2210 {
2211 GeometryInfo
2212 geometry_info;
2213
2214 MagickStatusType
2215 flags;
2216
2217 flags=ParseGeometry(draw_info->density,&geometry_info);
2218 if ((flags & RhoValue) != 0)
2219 resolution.x=geometry_info.rho;
2220 resolution.y=resolution.x;
2221 if ((flags & SigmaValue) != 0)
2222 resolution.y=geometry_info.sigma;
2223 }
2224 if (identity == MagickFalse)
2225 (void) TransformImage(&annotate_image,"0x0",(char *) NULL);
2226 else
2227 {
2228 RectangleInfo
2229 crop_info;
2230
2231 crop_info=GetImageBoundingBox(annotate_image,&annotate_image->exception);
2232 crop_info.height=(size_t) ((resolution.y/DefaultResolution)*
2233 ExpandAffine(&draw_info->affine)*draw_info->pointsize+0.5);
2234 crop_info.y=CastDoubleToLong(ceil((resolution.y/DefaultResolution)*
2235 extent.y/8.0-0.5));
2236 (void) FormatLocaleString(geometry,MaxTextExtent,
2237 "%.20gx%.20g%+.20g%+.20g",(double) crop_info.width,(double)
2238 crop_info.height,(double) crop_info.x,(double) crop_info.y);
2239 (void) TransformImage(&annotate_image,geometry,(char *) NULL);
2240 }
2241 metrics->pixels_per_em.x=(resolution.y/DefaultResolution)*
2242 ExpandAffine(&draw_info->affine)*draw_info->pointsize;
2243 metrics->pixels_per_em.y=metrics->pixels_per_em.x;
2244 metrics->ascent=metrics->pixels_per_em.y;
2245 metrics->descent=metrics->pixels_per_em.y/-5.0;
2246 metrics->width=(double) annotate_image->columns/
2247 ExpandAffine(&draw_info->affine);
2248 metrics->height=floor(metrics->ascent-metrics->descent+0.5);
2249 metrics->max_advance=metrics->pixels_per_em.x;
2250 metrics->bounds.x1=0.0;
2251 metrics->bounds.y1=metrics->descent;
2252 metrics->bounds.x2=metrics->ascent+metrics->descent;
2253 metrics->bounds.y2=metrics->ascent+metrics->descent;
2254 metrics->underline_position=(-2.0);
2255 metrics->underline_thickness=1.0;
2256 if (draw_info->render == MagickFalse)
2257 {
2258 annotate_image=DestroyImage(annotate_image);
2259 return(MagickTrue);
2260 }
2261 if (draw_info->fill.opacity != TransparentOpacity)
2262 {
2263 ExceptionInfo
2264 *exception;
2265
2266 MagickBooleanType
2267 sync;
2268
2269 PixelPacket
2270 fill_color;
2271
2272 CacheView
2273 *annotate_view;
2274
2275 /*
2276 Render fill color.
2277 */
2278 if (image->matte == MagickFalse)
2279 (void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
2280 if (annotate_image->matte == MagickFalse)
2281 (void) SetImageAlphaChannel(annotate_image,OpaqueAlphaChannel);
2282 fill_color=draw_info->fill;
2283 status=MagickTrue;
2284 exception=(&image->exception);
2285 annotate_view=AcquireAuthenticCacheView(annotate_image,exception);
2286#if defined(MAGICKCORE_OPENMP_SUPPORT)
2287 #pragma omp parallel for schedule(static) shared(status) \
2288 magick_number_threads(annotate_image,annotate_image,annotate_image->rows,4)
2289#endif
2290 for (y=0; y < (ssize_t) annotate_image->rows; y++)
2291 {
2292 PixelPacket
2293 *magick_restrict q;
2294
2295 ssize_t
2296 x;
2297
2298 if (status == MagickFalse)
2299 continue;
2300 q=GetCacheViewAuthenticPixels(annotate_view,0,y,annotate_image->columns,
2301 1,exception);
2302 if (q == (PixelPacket *) NULL)
2303 {
2304 status=MagickFalse;
2305 continue;
2306 }
2307 for (x=0; x < (ssize_t) annotate_image->columns; x++)
2308 {
2309 (void) GetFillColor(draw_info,x,y,&fill_color);
2310 SetPixelAlpha(q,ClampToQuantum(((((double) QuantumRange-
2311 GetPixelIntensity(annotate_image,q))*((double) QuantumRange-
2312 (double) fill_color.opacity))/(double) QuantumRange)));
2313 SetPixelRed(q,fill_color.red);
2314 SetPixelGreen(q,fill_color.green);
2315 SetPixelBlue(q,fill_color.blue);
2316 q++;
2317 }
2318 sync=SyncCacheViewAuthenticPixels(annotate_view,exception);
2319 if (sync == MagickFalse)
2320 status=MagickFalse;
2321 }
2322 annotate_view=DestroyCacheView(annotate_view);
2323 (void) CompositeImage(image,OverCompositeOp,annotate_image,
2324 (ssize_t) ceil(offset->x-0.5),(ssize_t) ceil(offset->y-(metrics->ascent+
2325 metrics->descent)-0.5));
2326 }
2327 annotate_image=DestroyImage(annotate_image);
2328 return(MagickTrue);
2329}
2330␌
2331/*
2332%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2333% %
2334% %
2335% %
2336+ R e n d e r X 1 1 %
2337% %
2338% %
2339% %
2340%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2341%
2342% RenderX11() renders text on the image with an X11 font. It also returns the
2343% bounding box of the text relative to the image.
2344%
2345% The format of the RenderX11 method is:
2346%
2347% MagickBooleanType RenderX11(Image *image,DrawInfo *draw_info,
2348% const PointInfo *offset,TypeMetric *metrics)
2349%
2350% A description of each parameter follows:
2351%
2352% o image: the image.
2353%
2354% o draw_info: the draw info.
2355%
2356% o offset: (x,y) location of text relative to image.
2357%
2358% o metrics: bounding box of text.
2359%
2360*/
2361static MagickBooleanType RenderX11(Image *image,const DrawInfo *draw_info,
2362 const PointInfo *offset,TypeMetric *metrics)
2363{
2364 MagickBooleanType
2365 status;
2366
2367 if (annotate_semaphore == (SemaphoreInfo *) NULL)
2368 ActivateSemaphoreInfo(&annotate_semaphore);
2369 LockSemaphoreInfo(annotate_semaphore);
2370 status=XRenderImage(image,draw_info,offset,metrics);
2371 UnlockSemaphoreInfo(annotate_semaphore);
2372 return(status);
2373}
_GraphemeInfo
Definition annotate.c:112