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 1999-2016 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 % http://www.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/property.h"
72 #include "MagickCore/resource_.h"
73 #include "MagickCore/semaphore.h"
74 #include "MagickCore/statistic.h"
75 #include "MagickCore/string_.h"
76 #include "MagickCore/token.h"
77 #include "MagickCore/token-private.h"
78 #include "MagickCore/transform-private.h"
79 #include "MagickCore/type.h"
80 #include "MagickCore/utility.h"
81 #include "MagickCore/utility-private.h"
82 #include "MagickCore/xwindow.h"
83 #include "MagickCore/xwindow-private.h"
84 #if defined(MAGICKCORE_FREETYPE_DELEGATE)
85 #if defined(__MINGW32__) || defined(__MINGW64__)
86 # undef interface
87 #endif
88 #include <ft2build.h>
89 #if defined(FT_FREETYPE_H)
90 # include FT_FREETYPE_H
91 #else
92 # include <freetype/freetype.h>
93 #endif
94 #if defined(FT_GLYPH_H)
95 # include FT_GLYPH_H
96 #else
97 # include <freetype/ftglyph.h>
98 #endif
99 #if defined(FT_OUTLINE_H)
100 # include FT_OUTLINE_H
101 #else
102 # include <freetype/ftoutln.h>
103 #endif
104 #if defined(FT_BBOX_H)
105 # include FT_BBOX_H
106 #else
107 # include <freetype/ftbbox.h>
108 #endif /* defined(FT_BBOX_H) */
109 #endif
110 #if defined(MAGICKCORE_RAQM_DELEGATE)
111 #include <raqm.h>
112 #endif
113 typedef struct _GraphemeInfo
114 {
115 size_t
116 index,
117 x_offset,
118 x_advance,
119 y_offset;
120
121 size_t
122 cluster;
123 } GraphemeInfo;
124
125 /*
126 Annotate semaphores.
127 */
128 static SemaphoreInfo
129 *annotate_semaphore = (SemaphoreInfo *) NULL;
130
131 /*
132 Forward declarations.
133 */
134 static MagickBooleanType
135 RenderType(Image *,const DrawInfo *,const PointInfo *,TypeMetric *,
136 ExceptionInfo *),
137 RenderPostscript(Image *,const DrawInfo *,const PointInfo *,TypeMetric *,
138 ExceptionInfo *),
139 RenderFreetype(Image *,const DrawInfo *,const char *,const PointInfo *,
140 TypeMetric *,ExceptionInfo *),
141 RenderX11(Image *,const DrawInfo *,const PointInfo *,TypeMetric *,
142 ExceptionInfo *);
143
144 /*
145 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
146 % %
147 % %
148 % %
149 + A n n o t a t e C o m p o n e n t G e n e s i s %
150 % %
151 % %
152 % %
153 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
154 %
155 % AnnotateComponentGenesis() instantiates the annotate component.
156 %
157 % The format of the AnnotateComponentGenesis method is:
158 %
159 % MagickBooleanType AnnotateComponentGenesis(void)
160 %
161 */
AnnotateComponentGenesis(void)162 MagickPrivate MagickBooleanType AnnotateComponentGenesis(void)
163 {
164 if (annotate_semaphore == (SemaphoreInfo *) NULL)
165 annotate_semaphore=AcquireSemaphoreInfo();
166 return(MagickTrue);
167 }
168
169 /*
170 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
171 % %
172 % %
173 % %
174 + 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 %
175 % %
176 % %
177 % %
178 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
179 %
180 % AnnotateComponentTerminus() destroys the annotate component.
181 %
182 % The format of the AnnotateComponentTerminus method is:
183 %
184 % AnnotateComponentTerminus(void)
185 %
186 */
AnnotateComponentTerminus(void)187 MagickPrivate void AnnotateComponentTerminus(void)
188 {
189 if (annotate_semaphore == (SemaphoreInfo *) NULL)
190 ActivateSemaphoreInfo(&annotate_semaphore);
191 RelinquishSemaphoreInfo(&annotate_semaphore);
192 }
193
194 /*
195 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
196 % %
197 % %
198 % %
199 % A n n o t a t e I m a g e %
200 % %
201 % %
202 % %
203 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
204 %
205 % AnnotateImage() annotates an image with text. Optionally you can include
206 % any of the following bits of information about the image by embedding
207 % the appropriate special characters:
208 %
209 % \n newline
210 % \r carriage return
211 % < less-than character.
212 % > greater-than character.
213 % & ampersand character.
214 % %% a percent sign
215 % %b file size of image read in
216 % %c comment meta-data property
217 % %d directory component of path
218 % %e filename extension or suffix
219 % %f filename (including suffix)
220 % %g layer canvas page geometry (equivalent to "%Wx%H%X%Y")
221 % %h current image height in pixels
222 % %i image filename (note: becomes output filename for "info:")
223 % %k CALCULATED: number of unique colors
224 % %l label meta-data property
225 % %m image file format (file magic)
226 % %n number of images in current image sequence
227 % %o output filename (used for delegates)
228 % %p index of image in current image list
229 % %q quantum depth (compile-time constant)
230 % %r image class and colorspace
231 % %s scene number (from input unless re-assigned)
232 % %t filename without directory or extension (suffix)
233 % %u unique temporary filename (used for delegates)
234 % %w current width in pixels
235 % %x x resolution (density)
236 % %y y resolution (density)
237 % %z image depth (as read in unless modified, image save depth)
238 % %A image transparency channel enabled (true/false)
239 % %C image compression type
240 % %D image GIF dispose method
241 % %G original image size (%wx%h; before any resizes)
242 % %H page (canvas) height
243 % %M Magick filename (original file exactly as given, including read mods)
244 % %O page (canvas) offset ( = %X%Y )
245 % %P page (canvas) size ( = %Wx%H )
246 % %Q image compression quality ( 0 = default )
247 % %S ?? scenes ??
248 % %T image time delay (in centi-seconds)
249 % %U image resolution units
250 % %W page (canvas) width
251 % %X page (canvas) x offset (including sign)
252 % %Y page (canvas) y offset (including sign)
253 % %Z unique filename (used for delegates)
254 % %@ CALCULATED: trim bounding box (without actually trimming)
255 % %# CALCULATED: 'signature' hash of image values
256 %
257 % The format of the AnnotateImage method is:
258 %
259 % MagickBooleanType AnnotateImage(Image *image,DrawInfo *draw_info,
260 % ExceptionInfo *exception)
261 %
262 % A description of each parameter follows:
263 %
264 % o image: the image.
265 %
266 % o draw_info: the draw info.
267 %
268 % o exception: return any errors or warnings in this structure.
269 %
270 */
AnnotateImage(Image * image,const DrawInfo * draw_info,ExceptionInfo * exception)271 MagickExport MagickBooleanType AnnotateImage(Image *image,
272 const DrawInfo *draw_info,ExceptionInfo *exception)
273 {
274 char
275 primitive[MagickPathExtent],
276 **textlist;
277
278 DrawInfo
279 *annotate,
280 *annotate_info;
281
282 GeometryInfo
283 geometry_info;
284
285 MagickBooleanType
286 status;
287
288 PointInfo
289 offset;
290
291 RectangleInfo
292 geometry;
293
294 register ssize_t
295 i;
296
297 size_t
298 length;
299
300 TypeMetric
301 metrics;
302
303 size_t
304 height,
305 number_lines;
306
307 assert(image != (Image *) NULL);
308 assert(image->signature == MagickCoreSignature);
309 if (image->debug != MagickFalse)
310 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
311 assert(draw_info != (DrawInfo *) NULL);
312 assert(draw_info->signature == MagickCoreSignature);
313 if (draw_info->text == (char *) NULL)
314 return(MagickFalse);
315 if (*draw_info->text == '\0')
316 return(MagickTrue);
317 textlist=StringToList(draw_info->text);
318 if (textlist == (char **) NULL)
319 return(MagickFalse);
320 length=strlen(textlist[0]);
321 for (i=1; textlist[i] != (char *) NULL; i++)
322 if (strlen(textlist[i]) > length)
323 length=strlen(textlist[i]);
324 number_lines=(size_t) i;
325 annotate=CloneDrawInfo((ImageInfo *) NULL,draw_info);
326 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
327 SetGeometry(image,&geometry);
328 SetGeometryInfo(&geometry_info);
329 if (annotate_info->geometry != (char *) NULL)
330 {
331 (void) ParsePageGeometry(image,annotate_info->geometry,&geometry,
332 exception);
333 (void) ParseGeometry(annotate_info->geometry,&geometry_info);
334 }
335 if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
336 return(MagickFalse);
337 if (IsGrayColorspace(image->colorspace) != MagickFalse)
338 (void) SetImageColorspace(image,sRGBColorspace,exception);
339 status=MagickTrue;
340 for (i=0; textlist[i] != (char *) NULL; i++)
341 {
342 /*
343 Position text relative to image.
344 */
345 annotate_info->affine.tx=geometry_info.xi-image->page.x;
346 annotate_info->affine.ty=geometry_info.psi-image->page.y;
347 (void) CloneString(&annotate->text,textlist[i]);
348 (void) GetTypeMetrics(image,annotate,&metrics,exception);
349 height=(ssize_t) (metrics.ascent-metrics.descent+
350 draw_info->interline_spacing+0.5);
351 switch (annotate->gravity)
352 {
353 case UndefinedGravity:
354 default:
355 {
356 offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height;
357 offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height;
358 break;
359 }
360 case NorthWestGravity:
361 {
362 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+i*
363 annotate_info->affine.ry*height+annotate_info->affine.ry*
364 (metrics.ascent+metrics.descent);
365 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
366 annotate_info->affine.sy*height+annotate_info->affine.sy*
367 metrics.ascent;
368 break;
369 }
370 case NorthGravity:
371 {
372 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
373 geometry.width/2.0+i*annotate_info->affine.ry*height-
374 annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)/2.0+
375 annotate_info->affine.ry*(metrics.ascent+metrics.descent);
376 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
377 annotate_info->affine.sy*height+annotate_info->affine.sy*
378 metrics.ascent-annotate_info->affine.rx*(metrics.width-
379 metrics.bounds.x1)/2.0;
380 break;
381 }
382 case NorthEastGravity:
383 {
384 offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
385 geometry.width+i*annotate_info->affine.ry*height-
386 annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)+
387 annotate_info->affine.ry*(metrics.ascent+metrics.descent)-1.0;
388 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
389 annotate_info->affine.sy*height+annotate_info->affine.sy*
390 metrics.ascent-annotate_info->affine.rx*(metrics.width-
391 metrics.bounds.x1);
392 break;
393 }
394 case WestGravity:
395 {
396 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+i*
397 annotate_info->affine.ry*height+annotate_info->affine.ry*
398 (metrics.ascent+metrics.descent-(number_lines-1.0)*height)/2.0;
399 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
400 geometry.height/2.0+i*annotate_info->affine.sy*height+
401 annotate_info->affine.sy*(metrics.ascent+metrics.descent-
402 (number_lines-1.0)*height)/2.0;
403 break;
404 }
405 case CenterGravity:
406 {
407 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
408 geometry.width/2.0+i*annotate_info->affine.ry*height-
409 annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)/2.0+
410 annotate_info->affine.ry*(metrics.ascent+metrics.descent-
411 (number_lines-1.0)*height)/2.0;
412 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
413 geometry.height/2.0+i*annotate_info->affine.sy*height-
414 annotate_info->affine.rx*(metrics.width+metrics.bounds.x1)/2.0+
415 annotate_info->affine.sy*(metrics.ascent+metrics.descent-
416 (number_lines-1.0)*height)/2.0;
417 break;
418 }
419 case EastGravity:
420 {
421 offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
422 geometry.width+i*annotate_info->affine.ry*height-
423 annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)+
424 annotate_info->affine.ry*(metrics.ascent+metrics.descent-
425 (number_lines-1.0)*height)/2.0-1.0;
426 offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
427 geometry.height/2.0+i*annotate_info->affine.sy*height-
428 annotate_info->affine.rx*(metrics.width+metrics.bounds.x1)+
429 annotate_info->affine.sy*(metrics.ascent+metrics.descent-
430 (number_lines-1.0)*height)/2.0;
431 break;
432 }
433 case SouthWestGravity:
434 {
435 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+i*
436 annotate_info->affine.ry*height-annotate_info->affine.ry*
437 (number_lines-1.0)*height;
438 offset.y=(geometry.height == 0 ? 1.0 : -1.0)*annotate_info->affine.ty+
439 geometry.height+i*annotate_info->affine.sy*height-
440 annotate_info->affine.sy*(number_lines-1.0)*height+metrics.descent;
441 break;
442 }
443 case SouthGravity:
444 {
445 offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
446 geometry.width/2.0+i*annotate_info->affine.ry*height-
447 annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)/2.0-
448 annotate_info->affine.ry*(number_lines-1.0)*height/2.0;
449 offset.y=(geometry.height == 0 ? 1.0 : -1.0)*annotate_info->affine.ty+
450 geometry.height+i*annotate_info->affine.sy*height-
451 annotate_info->affine.rx*(metrics.width+metrics.bounds.x1)/2.0-
452 annotate_info->affine.sy*(number_lines-1.0)*height+metrics.descent;
453 break;
454 }
455 case SouthEastGravity:
456 {
457 offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
458 geometry.width+i*annotate_info->affine.ry*height-
459 annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)-
460 annotate_info->affine.ry*(number_lines-1.0)*height-1.0;
461 offset.y=(geometry.height == 0 ? 1.0 : -1.0)*annotate_info->affine.ty+
462 geometry.height+i*annotate_info->affine.sy*height-
463 annotate_info->affine.rx*(metrics.width+metrics.bounds.x1)-
464 annotate_info->affine.sy*(number_lines-1.0)*height+metrics.descent;
465 break;
466 }
467 }
468 switch (annotate->align)
469 {
470 case LeftAlign:
471 {
472 offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height;
473 offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height;
474 break;
475 }
476 case CenterAlign:
477 {
478 offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height-
479 annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)/2.0;
480 offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height-
481 annotate_info->affine.rx*(metrics.width+metrics.bounds.x1)/2.0;
482 break;
483 }
484 case RightAlign:
485 {
486 offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height-
487 annotate_info->affine.sx*(metrics.width+metrics.bounds.x1);
488 offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height-
489 annotate_info->affine.rx*(metrics.width+metrics.bounds.x1);
490 break;
491 }
492 default:
493 break;
494 }
495 if (draw_info->undercolor.alpha != TransparentAlpha)
496 {
497 DrawInfo
498 *undercolor_info;
499
500 /*
501 Text box.
502 */
503 undercolor_info=CloneDrawInfo((ImageInfo *) NULL,(DrawInfo *) NULL);
504 undercolor_info->fill=draw_info->undercolor;
505 undercolor_info->affine=draw_info->affine;
506 undercolor_info->affine.tx=offset.x-draw_info->affine.ry*metrics.ascent;
507 undercolor_info->affine.ty=offset.y-draw_info->affine.sy*metrics.ascent;
508 (void) FormatLocaleString(primitive,MagickPathExtent,
509 "rectangle 0.0,0.0 %g,%g",metrics.origin.x,(double) height);
510 (void) CloneString(&undercolor_info->primitive,primitive);
511 (void) DrawImage(image,undercolor_info,exception);
512 (void) DestroyDrawInfo(undercolor_info);
513 }
514 annotate_info->affine.tx=offset.x;
515 annotate_info->affine.ty=offset.y;
516 (void) FormatLocaleString(primitive,MagickPathExtent,"stroke-width %g "
517 "line 0,0 %g,0",metrics.underline_thickness,metrics.width);
518 if (annotate->decorate == OverlineDecoration)
519 {
520 annotate_info->affine.ty-=(draw_info->affine.sy*(metrics.ascent+
521 metrics.descent-metrics.underline_position));
522 (void) CloneString(&annotate_info->primitive,primitive);
523 (void) DrawImage(image,annotate_info,exception);
524 }
525 else
526 if (annotate->decorate == UnderlineDecoration)
527 {
528 annotate_info->affine.ty-=(draw_info->affine.sy*
529 metrics.underline_position);
530 (void) CloneString(&annotate_info->primitive,primitive);
531 (void) DrawImage(image,annotate_info,exception);
532 }
533 /*
534 Annotate image with text.
535 */
536 status=RenderType(image,annotate,&offset,&metrics,exception);
537 if (status == MagickFalse)
538 break;
539 if (annotate->decorate == LineThroughDecoration)
540 {
541 annotate_info->affine.ty-=(draw_info->affine.sy*(height+
542 metrics.underline_position+metrics.descent)/2.0);
543 (void) CloneString(&annotate_info->primitive,primitive);
544 (void) DrawImage(image,annotate_info,exception);
545 }
546 }
547 /*
548 Relinquish resources.
549 */
550 annotate_info=DestroyDrawInfo(annotate_info);
551 annotate=DestroyDrawInfo(annotate);
552 for (i=0; textlist[i] != (char *) NULL; i++)
553 textlist[i]=DestroyString(textlist[i]);
554 textlist=(char **) RelinquishMagickMemory(textlist);
555 return(status);
556 }
557
558 /*
559 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
560 % %
561 % %
562 % %
563 % F o r m a t M a g i c k C a p t i o n %
564 % %
565 % %
566 % %
567 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
568 %
569 % FormatMagickCaption() formats a caption so that it fits within the image
570 % width. It returns the number of lines in the formatted caption.
571 %
572 % The format of the FormatMagickCaption method is:
573 %
574 % ssize_t FormatMagickCaption(Image *image,DrawInfo *draw_info,
575 % const MagickBooleanType split,TypeMetric *metrics,char **caption,
576 % ExceptionInfo *exception)
577 %
578 % A description of each parameter follows.
579 %
580 % o image: The image.
581 %
582 % o draw_info: the draw info.
583 %
584 % o split: when no convenient line breaks-- insert newline.
585 %
586 % o metrics: Return the font metrics in this structure.
587 %
588 % o caption: the caption.
589 %
590 % o exception: return any errors or warnings in this structure.
591 %
592 */
FormatMagickCaption(Image * image,DrawInfo * draw_info,const MagickBooleanType split,TypeMetric * metrics,char ** caption,ExceptionInfo * exception)593 MagickExport ssize_t FormatMagickCaption(Image *image,DrawInfo *draw_info,
594 const MagickBooleanType split,TypeMetric *metrics,char **caption,
595 ExceptionInfo *exception)
596 {
597 char
598 *text;
599
600 MagickBooleanType
601 digit,
602 status;
603
604 register char
605 *p,
606 *q,
607 *s;
608
609 register ssize_t
610 i;
611
612 size_t
613 width;
614
615 ssize_t
616 n;
617
618 digit=MagickFalse;
619 text=AcquireString(draw_info->text);
620 q=draw_info->text;
621 s=(char *) NULL;
622 for (p=(*caption); GetUTFCode(p) != 0; p+=GetUTFOctets(p))
623 {
624 if ((digit == MagickFalse) && (IsUTFSpace(GetUTFCode(p)) != MagickFalse))
625 s=p;
626 digit=((GetUTFCode(p) >= 0x0030) && (GetUTFCode(p) <= 0x0039)) ?
627 MagickTrue : MagickFalse;
628 if (GetUTFCode(p) == '\n')
629 q=draw_info->text;
630 for (i=0; i < (ssize_t) GetUTFOctets(p); i++)
631 *q++=(*(p+i));
632 *q='\0';
633 status=GetTypeMetrics(image,draw_info,metrics,exception);
634 if (status == MagickFalse)
635 break;
636 width=(size_t) floor(metrics->width+draw_info->stroke_width+0.5);
637 if ((width <= image->columns) || (strcmp(text,draw_info->text) == 0))
638 continue;
639 (void) strcpy(text,draw_info->text);
640 if ((s != (char *) NULL) && (GetUTFOctets(s) == 1))
641 {
642 *s='\n';
643 p=s;
644 }
645 else
646 if ((s != (char *) NULL) || (split != MagickFalse))
647 {
648 char
649 *target;
650
651 /*
652 No convenient line breaks-- insert newline.
653 */
654 target=AcquireString(*caption);
655 n=p-(*caption);
656 CopyMagickString(target,*caption,n+1);
657 ConcatenateMagickString(target,"\n",strlen(*caption)+1);
658 ConcatenateMagickString(target,p,strlen(*caption)+2);
659 (void) DestroyString(*caption);
660 *caption=target;
661 p=(*caption)+n;
662 }
663 q=draw_info->text;
664 s=(char *) NULL;
665 }
666 text=DestroyString(text);
667 n=0;
668 for (p=(*caption); GetUTFCode(p) != 0; p+=GetUTFOctets(p))
669 if (GetUTFCode(p) == '\n')
670 n++;
671 return(n);
672 }
673
674 /*
675 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
676 % %
677 % %
678 % %
679 % G e t M u l t i l i n e T y p e M e t r i c s %
680 % %
681 % %
682 % %
683 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
684 %
685 % GetMultilineTypeMetrics() returns the following information for the
686 % specified font and text:
687 %
688 % character width
689 % character height
690 % ascender
691 % descender
692 % text width
693 % text height
694 % maximum horizontal advance
695 % bounds: x1
696 % bounds: y1
697 % bounds: x2
698 % bounds: y2
699 % origin: x
700 % origin: y
701 % underline position
702 % underline thickness
703 %
704 % This method is like GetTypeMetrics() but it returns the maximum text width
705 % and height for multiple lines of text.
706 %
707 % The format of the GetMultilineTypeMetrics method is:
708 %
709 % MagickBooleanType GetMultilineTypeMetrics(Image *image,
710 % const DrawInfo *draw_info,TypeMetric *metrics,ExceptionInfo *exception)
711 %
712 % A description of each parameter follows:
713 %
714 % o image: the image.
715 %
716 % o draw_info: the draw info.
717 %
718 % o metrics: Return the font metrics in this structure.
719 %
720 % o exception: return any errors or warnings in this structure.
721 %
722 */
GetMultilineTypeMetrics(Image * image,const DrawInfo * draw_info,TypeMetric * metrics,ExceptionInfo * exception)723 MagickExport MagickBooleanType GetMultilineTypeMetrics(Image *image,
724 const DrawInfo *draw_info,TypeMetric *metrics,ExceptionInfo *exception)
725 {
726 char
727 **textlist;
728
729 DrawInfo
730 *annotate_info;
731
732 MagickBooleanType
733 status;
734
735 register ssize_t
736 i;
737
738 TypeMetric
739 extent;
740
741 assert(image != (Image *) NULL);
742 assert(image->signature == MagickCoreSignature);
743 if (image->debug != MagickFalse)
744 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
745 assert(draw_info != (DrawInfo *) NULL);
746 assert(draw_info->text != (char *) NULL);
747 assert(draw_info->signature == MagickCoreSignature);
748 if (*draw_info->text == '\0')
749 return(MagickFalse);
750 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
751 annotate_info->text=DestroyString(annotate_info->text);
752 /*
753 Convert newlines to multiple lines of text.
754 */
755 textlist=StringToList(draw_info->text);
756 if (textlist == (char **) NULL)
757 return(MagickFalse);
758 annotate_info->render=MagickFalse;
759 annotate_info->direction=UndefinedDirection;
760 (void) ResetMagickMemory(metrics,0,sizeof(*metrics));
761 (void) ResetMagickMemory(&extent,0,sizeof(extent));
762 /*
763 Find the widest of the text lines.
764 */
765 annotate_info->text=textlist[0];
766 status=GetTypeMetrics(image,annotate_info,&extent,exception);
767 *metrics=extent;
768 for (i=1; textlist[i] != (char *) NULL; i++)
769 {
770 annotate_info->text=textlist[i];
771 status=GetTypeMetrics(image,annotate_info,&extent,exception);
772 if (extent.width > metrics->width)
773 *metrics=extent;
774 }
775 metrics->height=(double) (i*(size_t) (metrics->ascent-metrics->descent+0.5)+
776 (i-1)*draw_info->interline_spacing);
777 /*
778 Relinquish resources.
779 */
780 annotate_info->text=(char *) NULL;
781 annotate_info=DestroyDrawInfo(annotate_info);
782 for (i=0; textlist[i] != (char *) NULL; i++)
783 textlist[i]=DestroyString(textlist[i]);
784 textlist=(char **) RelinquishMagickMemory(textlist);
785 return(status);
786 }
787
788 /*
789 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
790 % %
791 % %
792 % %
793 % G e t T y p e M e t r i c s %
794 % %
795 % %
796 % %
797 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
798 %
799 % GetTypeMetrics() returns the following information for the specified font
800 % and text:
801 %
802 % character width
803 % character height
804 % ascender
805 % descender
806 % text width
807 % text height
808 % maximum horizontal advance
809 % bounds: x1
810 % bounds: y1
811 % bounds: x2
812 % bounds: y2
813 % origin: x
814 % origin: y
815 % underline position
816 % underline thickness
817 %
818 % The format of the GetTypeMetrics method is:
819 %
820 % MagickBooleanType GetTypeMetrics(Image *image,const DrawInfo *draw_info,
821 % TypeMetric *metrics,ExceptionInfo *exception)
822 %
823 % A description of each parameter follows:
824 %
825 % o image: the image.
826 %
827 % o draw_info: the draw info.
828 %
829 % o metrics: Return the font metrics in this structure.
830 %
831 % o exception: return any errors or warnings in this structure.
832 %
833 */
GetTypeMetrics(Image * image,const DrawInfo * draw_info,TypeMetric * metrics,ExceptionInfo * exception)834 MagickExport MagickBooleanType GetTypeMetrics(Image *image,
835 const DrawInfo *draw_info,TypeMetric *metrics,ExceptionInfo *exception)
836 {
837 DrawInfo
838 *annotate_info;
839
840 MagickBooleanType
841 status;
842
843 PointInfo
844 offset;
845
846 assert(image != (Image *) NULL);
847 assert(image->signature == MagickCoreSignature);
848 if (image->debug != MagickFalse)
849 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
850 assert(draw_info != (DrawInfo *) NULL);
851 assert(draw_info->text != (char *) NULL);
852 assert(draw_info->signature == MagickCoreSignature);
853 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
854 annotate_info->render=MagickFalse;
855 annotate_info->direction=UndefinedDirection;
856 (void) ResetMagickMemory(metrics,0,sizeof(*metrics));
857 offset.x=0.0;
858 offset.y=0.0;
859 status=RenderType(image,annotate_info,&offset,metrics,exception);
860 if (image->debug != MagickFalse)
861 (void) LogMagickEvent(AnnotateEvent,GetMagickModule(),"Metrics: text: %s; "
862 "width: %g; height: %g; ascent: %g; descent: %g; max advance: %g; "
863 "bounds: %g,%g %g,%g; origin: %g,%g; pixels per em: %g,%g; "
864 "underline position: %g; underline thickness: %g",annotate_info->text,
865 metrics->width,metrics->height,metrics->ascent,metrics->descent,
866 metrics->max_advance,metrics->bounds.x1,metrics->bounds.y1,
867 metrics->bounds.x2,metrics->bounds.y2,metrics->origin.x,metrics->origin.y,
868 metrics->pixels_per_em.x,metrics->pixels_per_em.y,
869 metrics->underline_position,metrics->underline_thickness);
870 annotate_info=DestroyDrawInfo(annotate_info);
871 return(status);
872 }
873
874 /*
875 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
876 % %
877 % %
878 % %
879 + R e n d e r T y p e %
880 % %
881 % %
882 % %
883 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
884 %
885 % RenderType() renders text on the image. It also returns the bounding box of
886 % the text relative to the image.
887 %
888 % The format of the RenderType method is:
889 %
890 % MagickBooleanType RenderType(Image *image,DrawInfo *draw_info,
891 % const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
892 %
893 % A description of each parameter follows:
894 %
895 % o image: the image.
896 %
897 % o draw_info: the draw info.
898 %
899 % o offset: (x,y) location of text relative to image.
900 %
901 % o metrics: bounding box of text.
902 %
903 % o exception: return any errors or warnings in this structure.
904 %
905 */
RenderType(Image * image,const DrawInfo * draw_info,const PointInfo * offset,TypeMetric * metrics,ExceptionInfo * exception)906 static MagickBooleanType RenderType(Image *image,const DrawInfo *draw_info,
907 const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
908 {
909 const TypeInfo
910 *type_info;
911
912 DrawInfo
913 *annotate_info;
914
915 MagickBooleanType
916 status;
917
918 type_info=(const TypeInfo *) NULL;
919 if (draw_info->font != (char *) NULL)
920 {
921 if (*draw_info->font == '@')
922 {
923 status=RenderFreetype(image,draw_info,draw_info->encoding,offset,
924 metrics,exception);
925 return(status);
926 }
927 if (*draw_info->font == '-')
928 return(RenderX11(image,draw_info,offset,metrics,exception));
929 if (IsPathAccessible(draw_info->font) != MagickFalse)
930 {
931 status=RenderFreetype(image,draw_info,draw_info->encoding,offset,
932 metrics,exception);
933 return(status);
934 }
935 type_info=GetTypeInfo(draw_info->font,exception);
936 if (type_info == (const TypeInfo *) NULL)
937 (void) ThrowMagickException(exception,GetMagickModule(),TypeWarning,
938 "UnableToReadFont","`%s'",draw_info->font);
939 }
940 if ((type_info == (const TypeInfo *) NULL) &&
941 (draw_info->family != (const char *) NULL))
942 {
943 type_info=GetTypeInfoByFamily(draw_info->family,draw_info->style,
944 draw_info->stretch,draw_info->weight,exception);
945 if (type_info == (const TypeInfo *) NULL)
946 (void) ThrowMagickException(exception,GetMagickModule(),TypeWarning,
947 "UnableToReadFont","`%s'",draw_info->family);
948 }
949 if (type_info == (const TypeInfo *) NULL)
950 type_info=GetTypeInfoByFamily("Arial",draw_info->style,
951 draw_info->stretch,draw_info->weight,exception);
952 if (type_info == (const TypeInfo *) NULL)
953 type_info=GetTypeInfoByFamily("Helvetica",draw_info->style,
954 draw_info->stretch,draw_info->weight,exception);
955 if (type_info == (const TypeInfo *) NULL)
956 type_info=GetTypeInfoByFamily("Century Schoolbook",draw_info->style,
957 draw_info->stretch,draw_info->weight,exception);
958 if (type_info == (const TypeInfo *) NULL)
959 type_info=GetTypeInfoByFamily("Sans",draw_info->style,
960 draw_info->stretch,draw_info->weight,exception);
961 if (type_info == (const TypeInfo *) NULL)
962 type_info=GetTypeInfoByFamily((const char *) NULL,draw_info->style,
963 draw_info->stretch,draw_info->weight,exception);
964 if (type_info == (const TypeInfo *) NULL)
965 type_info=GetTypeInfo("*",exception);
966 if (type_info == (const TypeInfo *) NULL)
967 {
968 status=RenderFreetype(image,draw_info,draw_info->encoding,offset,metrics,
969 exception);
970 return(status);
971 }
972 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
973 annotate_info->face=type_info->face;
974 if (type_info->metrics != (char *) NULL)
975 (void) CloneString(&annotate_info->metrics,type_info->metrics);
976 if (type_info->glyphs != (char *) NULL)
977 (void) CloneString(&annotate_info->font,type_info->glyphs);
978 status=RenderFreetype(image,annotate_info,type_info->encoding,offset,metrics,
979 exception);
980 annotate_info=DestroyDrawInfo(annotate_info);
981 return(status);
982 }
983
984 /*
985 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
986 % %
987 % %
988 % %
989 + R e n d e r F r e e t y p e %
990 % %
991 % %
992 % %
993 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
994 %
995 % RenderFreetype() renders text on the image with a Truetype font. It also
996 % returns the bounding box of the text relative to the image.
997 %
998 % The format of the RenderFreetype method is:
999 %
1000 % MagickBooleanType RenderFreetype(Image *image,DrawInfo *draw_info,
1001 % const char *encoding,const PointInfo *offset,TypeMetric *metrics,
1002 % ExceptionInfo *exception)
1003 %
1004 % A description of each parameter follows:
1005 %
1006 % o image: the image.
1007 %
1008 % o draw_info: the draw info.
1009 %
1010 % o encoding: the font encoding.
1011 %
1012 % o offset: (x,y) location of text relative to image.
1013 %
1014 % o metrics: bounding box of text.
1015 %
1016 % o exception: return any errors or warnings in this structure.
1017 %
1018 */
1019
1020 #if defined(MAGICKCORE_FREETYPE_DELEGATE)
1021
ComplexTextLayout(const Image * image,const DrawInfo * draw_info,const char * text,const size_t length,const FT_Face face,const FT_Int32 flags,GraphemeInfo ** grapheme,ExceptionInfo * exception)1022 static size_t ComplexTextLayout(const Image *image,const DrawInfo *draw_info,
1023 const char *text,const size_t length,const FT_Face face,const FT_Int32 flags,
1024 GraphemeInfo **grapheme,ExceptionInfo *exception)
1025 {
1026 #if defined(MAGICKCORE_RAQM_DELEGATE)
1027 const char
1028 *features;
1029
1030 raqm_t
1031 *rq;
1032
1033 raqm_glyph_t
1034 *glyphs;
1035
1036 register size_t
1037 i;
1038
1039 size_t
1040 extent;
1041
1042 extent=0;
1043 rq=raqm_create();
1044 if (rq == (raqm_t *) NULL)
1045 goto cleanup;
1046 if (raqm_set_text_utf8(rq,text,length) == 0)
1047 goto cleanup;
1048 if (raqm_set_par_direction(rq,(raqm_direction_t) draw_info->direction) == 0)
1049 goto cleanup;
1050 if (raqm_set_freetype_face(rq,face) == 0)
1051 goto cleanup;
1052 features=GetImageProperty(image,"type:features",exception);
1053 if (features != (const char *) NULL)
1054 {
1055 char
1056 breaker,
1057 quote,
1058 *token;
1059
1060 int
1061 next,
1062 status_token;
1063
1064 TokenInfo
1065 *token_info;
1066
1067 next=0;
1068 token_info=AcquireTokenInfo();
1069 token=AcquireString("");
1070 status_token=Tokenizer(token_info,0,token,50,features,"",",","",'\0',
1071 &breaker,&next,"e);
1072 while (status_token == 0)
1073 {
1074 raqm_add_font_feature(rq,token,strlen(token));
1075 status_token=Tokenizer(token_info,0,token,50,features,"",",","",'\0',
1076 &breaker,&next,"e);
1077 }
1078 token_info=DestroyTokenInfo(token_info);
1079 token=DestroyString(token);
1080 }
1081 if (raqm_layout(rq) == 0)
1082 goto cleanup;
1083 glyphs=raqm_get_glyphs(rq,&extent);
1084 if (glyphs == (raqm_glyph_t *) NULL)
1085 {
1086 extent=0;
1087 goto cleanup;
1088 }
1089 *grapheme=(GraphemeInfo *) AcquireQuantumMemory(extent,sizeof(**grapheme));
1090 if (*grapheme == (GraphemeInfo *) NULL)
1091 {
1092 extent=0;
1093 goto cleanup;
1094 }
1095 for (i=0; i < (ssize_t) extent; i++)
1096 {
1097 (*grapheme)[i].index=glyphs[i].index;
1098 (*grapheme)[i].x_offset=glyphs[i].x_offset;
1099 (*grapheme)[i].x_advance=glyphs[i].x_advance;
1100 (*grapheme)[i].y_offset=glyphs[i].y_offset;
1101 (*grapheme)[i].cluster=glyphs[i].cluster;
1102 }
1103
1104 cleanup:
1105 raqm_destroy(rq);
1106 return(extent);
1107 #else
1108 const char
1109 *p;
1110
1111 FT_Error
1112 ft_status;
1113
1114 register ssize_t
1115 i;
1116
1117 ssize_t
1118 last_glyph;
1119
1120 magick_unreferenced(exception);
1121
1122 /*
1123 Simple layout for bi-directional text (right-to-left or left-to-right).
1124 */
1125 *grapheme=(GraphemeInfo *) AcquireQuantumMemory(length+1,sizeof(**grapheme));
1126 if (*grapheme == (GraphemeInfo *) NULL)
1127 return(0);
1128 last_glyph=0;
1129 p=text;
1130 for (i=0; GetUTFCode(p) != 0; p+=GetUTFOctets(p), i++)
1131 {
1132 (*grapheme)[i].index=(ssize_t) FT_Get_Char_Index(face,GetUTFCode(p));
1133 (*grapheme)[i].x_offset=0;
1134 (*grapheme)[i].y_offset=0;
1135 if (((*grapheme)[i].index != 0) && (last_glyph != 0))
1136 {
1137 if (FT_HAS_KERNING(face))
1138 {
1139 FT_Vector
1140 kerning;
1141
1142 ft_status=FT_Get_Kerning(face,(FT_UInt) last_glyph,(FT_UInt)
1143 (*grapheme)[i].index,ft_kerning_default,&kerning);
1144 if (ft_status == 0)
1145 (*grapheme)[i-1].x_advance+=(FT_Pos) ((draw_info->direction ==
1146 RightToLeftDirection ? -1.0 : 1.0)*kerning.x);
1147 }
1148 }
1149 ft_status=FT_Load_Glyph(face,(FT_UInt) (*grapheme)[i].index,flags);
1150 (*grapheme)[i].x_advance=face->glyph->advance.x;
1151 (*grapheme)[i].cluster=p-text;
1152 last_glyph=(*grapheme)[i].index;
1153 }
1154 return((size_t) i);
1155 #endif
1156 }
1157
TraceCubicBezier(FT_Vector * p,FT_Vector * q,FT_Vector * to,DrawInfo * draw_info)1158 static int TraceCubicBezier(FT_Vector *p,FT_Vector *q,FT_Vector *to,
1159 DrawInfo *draw_info)
1160 {
1161 AffineMatrix
1162 affine;
1163
1164 char
1165 path[MagickPathExtent];
1166
1167 affine=draw_info->affine;
1168 (void) FormatLocaleString(path,MagickPathExtent,"C%g,%g %g,%g %g,%g",
1169 affine.tx+p->x/64.0,affine.ty-p->y/64.0,affine.tx+q->x/64.0,affine.ty-
1170 q->y/64.0,affine.tx+to->x/64.0,affine.ty-to->y/64.0);
1171 (void) ConcatenateString(&draw_info->primitive,path);
1172 return(0);
1173 }
1174
TraceLineTo(FT_Vector * to,DrawInfo * draw_info)1175 static int TraceLineTo(FT_Vector *to,DrawInfo *draw_info)
1176 {
1177 AffineMatrix
1178 affine;
1179
1180 char
1181 path[MagickPathExtent];
1182
1183 affine=draw_info->affine;
1184 (void) FormatLocaleString(path,MagickPathExtent,"L%g,%g",affine.tx+to->x/64.0,
1185 affine.ty-to->y/64.0);
1186 (void) ConcatenateString(&draw_info->primitive,path);
1187 return(0);
1188 }
1189
TraceMoveTo(FT_Vector * to,DrawInfo * draw_info)1190 static int TraceMoveTo(FT_Vector *to,DrawInfo *draw_info)
1191 {
1192 AffineMatrix
1193 affine;
1194
1195 char
1196 path[MagickPathExtent];
1197
1198 affine=draw_info->affine;
1199 (void) FormatLocaleString(path,MagickPathExtent,"M%g,%g",affine.tx+to->x/64.0,
1200 affine.ty-to->y/64.0);
1201 (void) ConcatenateString(&draw_info->primitive,path);
1202 return(0);
1203 }
1204
TraceQuadraticBezier(FT_Vector * control,FT_Vector * to,DrawInfo * draw_info)1205 static int TraceQuadraticBezier(FT_Vector *control,FT_Vector *to,
1206 DrawInfo *draw_info)
1207 {
1208 AffineMatrix
1209 affine;
1210
1211 char
1212 path[MagickPathExtent];
1213
1214 affine=draw_info->affine;
1215 (void) FormatLocaleString(path,MagickPathExtent,"Q%g,%g %g,%g",affine.tx+
1216 control->x/64.0,affine.ty-control->y/64.0,affine.tx+to->x/64.0,affine.ty-
1217 to->y/64.0);
1218 (void) ConcatenateString(&draw_info->primitive,path);
1219 return(0);
1220 }
1221
RenderFreetype(Image * image,const DrawInfo * draw_info,const char * encoding,const PointInfo * offset,TypeMetric * metrics,ExceptionInfo * exception)1222 static MagickBooleanType RenderFreetype(Image *image,const DrawInfo *draw_info,
1223 const char *encoding,const PointInfo *offset,TypeMetric *metrics,
1224 ExceptionInfo *exception)
1225 {
1226 #if !defined(FT_OPEN_PATHNAME)
1227 #define FT_OPEN_PATHNAME ft_open_pathname
1228 #endif
1229
1230 typedef struct _GlyphInfo
1231 {
1232 FT_UInt
1233 id;
1234
1235 FT_Vector
1236 origin;
1237
1238 FT_Glyph
1239 image;
1240 } GlyphInfo;
1241
1242 const char
1243 *value;
1244
1245 DrawInfo
1246 *annotate_info;
1247
1248 FT_BBox
1249 bounds;
1250
1251 FT_BitmapGlyph
1252 bitmap;
1253
1254 FT_Encoding
1255 encoding_type;
1256
1257 FT_Error
1258 ft_status;
1259
1260 FT_Face
1261 face;
1262
1263 FT_Int32
1264 flags;
1265
1266 FT_Library
1267 library;
1268
1269 FT_Matrix
1270 affine;
1271
1272 FT_Open_Args
1273 args;
1274
1275 FT_Vector
1276 origin;
1277
1278 GlyphInfo
1279 glyph,
1280 last_glyph;
1281
1282 GraphemeInfo
1283 *grapheme;
1284
1285 MagickBooleanType
1286 status;
1287
1288 PointInfo
1289 point,
1290 resolution;
1291
1292 register char
1293 *p;
1294
1295 register ssize_t
1296 i;
1297
1298 size_t
1299 length;
1300
1301 ssize_t
1302 code,
1303 y;
1304
1305 static FT_Outline_Funcs
1306 OutlineMethods =
1307 {
1308 (FT_Outline_MoveTo_Func) TraceMoveTo,
1309 (FT_Outline_LineTo_Func) TraceLineTo,
1310 (FT_Outline_ConicTo_Func) TraceQuadraticBezier,
1311 (FT_Outline_CubicTo_Func) TraceCubicBezier,
1312 0, 0
1313 };
1314
1315 unsigned char
1316 *utf8;
1317
1318 /*
1319 Initialize Truetype library.
1320 */
1321 ft_status=FT_Init_FreeType(&library);
1322 if (ft_status != 0)
1323 ThrowBinaryException(TypeError,"UnableToInitializeFreetypeLibrary",
1324 image->filename);
1325 args.flags=FT_OPEN_PATHNAME;
1326 if (draw_info->font == (char *) NULL)
1327 args.pathname=ConstantString("helvetica");
1328 else
1329 if (*draw_info->font != '@')
1330 args.pathname=ConstantString(draw_info->font);
1331 else
1332 args.pathname=ConstantString(draw_info->font+1);
1333 face=(FT_Face) NULL;
1334 ft_status=FT_Open_Face(library,&args,(long) draw_info->face,&face);
1335 args.pathname=DestroyString(args.pathname);
1336 if (ft_status != 0)
1337 {
1338 (void) FT_Done_FreeType(library);
1339 (void) ThrowMagickException(exception,GetMagickModule(),TypeError,
1340 "UnableToReadFont","`%s'",draw_info->font);
1341 return(RenderPostscript(image,draw_info,offset,metrics,exception));
1342 }
1343 if ((draw_info->metrics != (char *) NULL) &&
1344 (IsPathAccessible(draw_info->metrics) != MagickFalse))
1345 (void) FT_Attach_File(face,draw_info->metrics);
1346 encoding_type=ft_encoding_unicode;
1347 ft_status=FT_Select_Charmap(face,encoding_type);
1348 if ((ft_status != 0) && (face->num_charmaps != 0))
1349 ft_status=FT_Set_Charmap(face,face->charmaps[0]);
1350 if (encoding != (const char *) NULL)
1351 {
1352 if (LocaleCompare(encoding,"AdobeCustom") == 0)
1353 encoding_type=ft_encoding_adobe_custom;
1354 if (LocaleCompare(encoding,"AdobeExpert") == 0)
1355 encoding_type=ft_encoding_adobe_expert;
1356 if (LocaleCompare(encoding,"AdobeStandard") == 0)
1357 encoding_type=ft_encoding_adobe_standard;
1358 if (LocaleCompare(encoding,"AppleRoman") == 0)
1359 encoding_type=ft_encoding_apple_roman;
1360 if (LocaleCompare(encoding,"BIG5") == 0)
1361 encoding_type=ft_encoding_big5;
1362 if (LocaleCompare(encoding,"GB2312") == 0)
1363 encoding_type=ft_encoding_gb2312;
1364 if (LocaleCompare(encoding,"Johab") == 0)
1365 encoding_type=ft_encoding_johab;
1366 #if defined(ft_encoding_latin_1)
1367 if (LocaleCompare(encoding,"Latin-1") == 0)
1368 encoding_type=ft_encoding_latin_1;
1369 #endif
1370 if (LocaleCompare(encoding,"Latin-2") == 0)
1371 encoding_type=ft_encoding_latin_2;
1372 if (LocaleCompare(encoding,"None") == 0)
1373 encoding_type=ft_encoding_none;
1374 if (LocaleCompare(encoding,"SJIScode") == 0)
1375 encoding_type=ft_encoding_sjis;
1376 if (LocaleCompare(encoding,"Symbol") == 0)
1377 encoding_type=ft_encoding_symbol;
1378 if (LocaleCompare(encoding,"Unicode") == 0)
1379 encoding_type=ft_encoding_unicode;
1380 if (LocaleCompare(encoding,"Wansung") == 0)
1381 encoding_type=ft_encoding_wansung;
1382 ft_status=FT_Select_Charmap(face,encoding_type);
1383 if (ft_status != 0)
1384 {
1385 (void) FT_Done_Face(face);
1386 (void) FT_Done_FreeType(library);
1387 ThrowBinaryException(TypeError,"UnrecognizedFontEncoding",encoding);
1388 }
1389 }
1390 /*
1391 Set text size.
1392 */
1393 resolution.x=DefaultResolution;
1394 resolution.y=DefaultResolution;
1395 if (draw_info->density != (char *) NULL)
1396 {
1397 GeometryInfo
1398 geometry_info;
1399
1400 MagickStatusType
1401 flags;
1402
1403 flags=ParseGeometry(draw_info->density,&geometry_info);
1404 resolution.x=geometry_info.rho;
1405 resolution.y=geometry_info.sigma;
1406 if ((flags & SigmaValue) == 0)
1407 resolution.y=resolution.x;
1408 }
1409 ft_status=FT_Set_Char_Size(face,(FT_F26Dot6) (64.0*draw_info->pointsize),
1410 (FT_F26Dot6) (64.0*draw_info->pointsize),(FT_UInt) resolution.x,
1411 (FT_UInt) resolution.y);
1412 if (ft_status != 0)
1413 {
1414 (void) FT_Done_Face(face);
1415 (void) FT_Done_FreeType(library);
1416 ThrowBinaryException(TypeError,"UnableToReadFont",draw_info->font);
1417 }
1418 metrics->pixels_per_em.x=face->size->metrics.x_ppem;
1419 metrics->pixels_per_em.y=face->size->metrics.y_ppem;
1420 metrics->ascent=(double) face->size->metrics.ascender/64.0;
1421 metrics->descent=(double) face->size->metrics.descender/64.0;
1422 metrics->width=0;
1423 metrics->origin.x=0;
1424 metrics->origin.y=0;
1425 metrics->height=(double) face->size->metrics.height/64.0;
1426 metrics->max_advance=0.0;
1427 if (face->size->metrics.max_advance > MagickEpsilon)
1428 metrics->max_advance=(double) face->size->metrics.max_advance/64.0;
1429 metrics->bounds.x1=0.0;
1430 metrics->bounds.y1=metrics->descent;
1431 metrics->bounds.x2=metrics->ascent+metrics->descent;
1432 metrics->bounds.y2=metrics->ascent+metrics->descent;
1433 metrics->underline_position=face->underline_position/64.0;
1434 metrics->underline_thickness=face->underline_thickness/64.0;
1435 if ((draw_info->text == (char *) NULL) || (*draw_info->text == '\0'))
1436 {
1437 (void) FT_Done_Face(face);
1438 (void) FT_Done_FreeType(library);
1439 return(MagickTrue);
1440 }
1441 /*
1442 Compute bounding box.
1443 */
1444 if (image->debug != MagickFalse)
1445 (void) LogMagickEvent(AnnotateEvent,GetMagickModule(),"Font %s; "
1446 "font-encoding %s; text-encoding %s; pointsize %g",
1447 draw_info->font != (char *) NULL ? draw_info->font : "none",
1448 encoding != (char *) NULL ? encoding : "none",
1449 draw_info->encoding != (char *) NULL ? draw_info->encoding : "none",
1450 draw_info->pointsize);
1451 flags=FT_LOAD_NO_BITMAP;
1452 if (draw_info->text_antialias == MagickFalse)
1453 flags|=FT_LOAD_TARGET_MONO;
1454 else
1455 {
1456 #if defined(FT_LOAD_TARGET_LIGHT)
1457 flags|=FT_LOAD_TARGET_LIGHT;
1458 #elif defined(FT_LOAD_TARGET_LCD)
1459 flags|=FT_LOAD_TARGET_LCD;
1460 #endif
1461 }
1462 value=GetImageProperty(image,"type:hinting",exception);
1463 if ((value != (const char *) NULL) && (LocaleCompare(value,"off") == 0))
1464 flags|=FT_LOAD_NO_HINTING;
1465 glyph.id=0;
1466 glyph.image=NULL;
1467 last_glyph.id=0;
1468 last_glyph.image=NULL;
1469 origin.x=0;
1470 origin.y=0;
1471 affine.xx=65536L;
1472 affine.yx=0L;
1473 affine.xy=0L;
1474 affine.yy=65536L;
1475 if (draw_info->render != MagickFalse)
1476 {
1477 affine.xx=(FT_Fixed) (65536L*draw_info->affine.sx+0.5);
1478 affine.yx=(FT_Fixed) (-65536L*draw_info->affine.rx+0.5);
1479 affine.xy=(FT_Fixed) (-65536L*draw_info->affine.ry+0.5);
1480 affine.yy=(FT_Fixed) (65536L*draw_info->affine.sy+0.5);
1481 }
1482 annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1483 if (annotate_info->dash_pattern != (double *) NULL)
1484 annotate_info->dash_pattern[0]=0.0;
1485 (void) CloneString(&annotate_info->primitive,"path '");
1486 status=MagickTrue;
1487 if (draw_info->render != MagickFalse)
1488 {
1489 if (image->storage_class != DirectClass)
1490 (void) SetImageStorageClass(image,DirectClass,exception);
1491 if (image->alpha_trait == UndefinedPixelTrait)
1492 (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
1493 }
1494 point.x=0.0;
1495 point.y=0.0;
1496 for (p=draw_info->text; GetUTFCode(p) != 0; p+=GetUTFOctets(p))
1497 if (GetUTFCode(p) < 0)
1498 break;
1499 utf8=(unsigned char *) NULL;
1500 if (GetUTFCode(p) == 0)
1501 p=draw_info->text;
1502 else
1503 {
1504 utf8=ConvertLatin1ToUTF8((unsigned char *) draw_info->text);
1505 if (utf8 != (unsigned char *) NULL)
1506 p=(char *) utf8;
1507 }
1508 grapheme=(GraphemeInfo *) NULL;
1509 length=ComplexTextLayout(image,draw_info,p,strlen(p),face,flags,&grapheme,
1510 exception);
1511 code=0;
1512 for (i=0; i < (ssize_t) length; i++)
1513 {
1514 /*
1515 Render UTF-8 sequence.
1516 */
1517 glyph.id=(FT_UInt) grapheme[i].index;
1518 if (glyph.id == 0)
1519 glyph.id=FT_Get_Char_Index(face,'?');
1520 if ((glyph.id != 0) && (last_glyph.id != 0))
1521 origin.x+=(FT_Pos) (64.0*draw_info->kerning);
1522 glyph.origin=origin;
1523 glyph.origin.x+=(FT_Pos) grapheme[i].x_offset;
1524 glyph.origin.y+=(FT_Pos) grapheme[i].y_offset;
1525 ft_status=FT_Load_Glyph(face,glyph.id,flags);
1526 if (ft_status != 0)
1527 continue;
1528 ft_status=FT_Get_Glyph(face->glyph,&glyph.image);
1529 if (ft_status != 0)
1530 continue;
1531 ft_status=FT_Outline_Get_BBox(&((FT_OutlineGlyph) glyph.image)->outline,
1532 &bounds);
1533 if (ft_status != 0)
1534 continue;
1535 if ((p == draw_info->text) || (bounds.xMin < metrics->bounds.x1))
1536 if (bounds.xMin != 0)
1537 metrics->bounds.x1=(double) bounds.xMin;
1538 if ((p == draw_info->text) || (bounds.yMin < metrics->bounds.y1))
1539 if (bounds.yMin != 0)
1540 metrics->bounds.y1=(double) bounds.yMin;
1541 if ((p == draw_info->text) || (bounds.xMax > metrics->bounds.x2))
1542 if (bounds.xMax != 0)
1543 metrics->bounds.x2=(double) bounds.xMax;
1544 if ((p == draw_info->text) || (bounds.yMax > metrics->bounds.y2))
1545 if (bounds.yMax != 0)
1546 metrics->bounds.y2=(double) bounds.yMax;
1547 if (((draw_info->stroke.alpha != TransparentAlpha) ||
1548 (draw_info->stroke_pattern != (Image *) NULL)) &&
1549 ((status != MagickFalse) && (draw_info->render != MagickFalse)))
1550 {
1551 /*
1552 Trace the glyph.
1553 */
1554 annotate_info->affine.tx=glyph.origin.x/64.0;
1555 annotate_info->affine.ty=(-glyph.origin.y/64.0);
1556 (void) FT_Outline_Decompose(&((FT_OutlineGlyph) glyph.image)->outline,
1557 &OutlineMethods,annotate_info);
1558 }
1559 FT_Vector_Transform(&glyph.origin,&affine);
1560 (void) FT_Glyph_Transform(glyph.image,&affine,&glyph.origin);
1561 ft_status=FT_Glyph_To_Bitmap(&glyph.image,ft_render_mode_normal,
1562 (FT_Vector *) NULL,MagickTrue);
1563 if (ft_status != 0)
1564 continue;
1565 bitmap=(FT_BitmapGlyph) glyph.image;
1566 point.x=offset->x+bitmap->left;
1567 if (bitmap->bitmap.pixel_mode == ft_pixel_mode_mono)
1568 point.x=offset->x+(origin.x >> 6);
1569 point.y=offset->y-bitmap->top;
1570 if (draw_info->render != MagickFalse)
1571 {
1572 CacheView
1573 *image_view;
1574
1575 register unsigned char
1576 *r;
1577
1578 /*
1579 Rasterize the glyph.
1580 */
1581 image_view=AcquireAuthenticCacheView(image,exception);
1582 r=bitmap->bitmap.buffer;
1583 for (y=0; y < (ssize_t) bitmap->bitmap.rows; y++)
1584 {
1585 double
1586 fill_opacity;
1587
1588 MagickBooleanType
1589 active,
1590 sync;
1591
1592 PixelInfo
1593 fill_color;
1594
1595 register Quantum
1596 *magick_restrict q;
1597
1598 register ssize_t
1599 x;
1600
1601 ssize_t
1602 n,
1603 x_offset,
1604 y_offset;
1605
1606 if (status == MagickFalse)
1607 continue;
1608 x_offset=(ssize_t) ceil(point.x-0.5);
1609 y_offset=(ssize_t) ceil(point.y+y-0.5);
1610 if ((y_offset < 0) || (y_offset >= (ssize_t) image->rows))
1611 continue;
1612 q=(Quantum *) NULL;
1613 if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns))
1614 active=MagickFalse;
1615 else
1616 {
1617 q=GetCacheViewAuthenticPixels(image_view,x_offset,y_offset,
1618 bitmap->bitmap.width,1,exception);
1619 active=q != (Quantum *) NULL ? MagickTrue : MagickFalse;
1620 }
1621 n=y*bitmap->bitmap.pitch-1;
1622 for (x=0; x < (ssize_t) bitmap->bitmap.width; x++)
1623 {
1624 n++;
1625 x_offset++;
1626 if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns))
1627 {
1628 if (q != (Quantum *) NULL)
1629 q+=GetPixelChannels(image);
1630 continue;
1631 }
1632 if (bitmap->bitmap.pixel_mode != ft_pixel_mode_mono)
1633 fill_opacity=(double) (r[n])/(bitmap->bitmap.num_grays-1);
1634 else
1635 fill_opacity=((r[(x >> 3)+y*bitmap->bitmap.pitch] &
1636 (1 << (~x & 0x07)))) == 0 ? 0.0 : 1.0;
1637 if (draw_info->text_antialias == MagickFalse)
1638 fill_opacity=fill_opacity >= 0.5 ? 1.0 : 0.0;
1639 if (active == MagickFalse)
1640 q=GetCacheViewAuthenticPixels(image_view,x_offset,y_offset,1,1,
1641 exception);
1642 if (q == (Quantum *) NULL)
1643 continue;
1644 GetPixelInfo(image,&fill_color);
1645 GetFillColor(draw_info,x_offset,y_offset,&fill_color,exception);
1646 fill_opacity=fill_opacity*fill_color.alpha;
1647 CompositePixelOver(image,&fill_color,fill_opacity,q,
1648 GetPixelAlpha(image,q),q);
1649 if (active == MagickFalse)
1650 {
1651 sync=SyncCacheViewAuthenticPixels(image_view,exception);
1652 if (sync == MagickFalse)
1653 status=MagickFalse;
1654 }
1655 q+=GetPixelChannels(image);
1656 }
1657 sync=SyncCacheViewAuthenticPixels(image_view,exception);
1658 if (sync == MagickFalse)
1659 status=MagickFalse;
1660 }
1661 image_view=DestroyCacheView(image_view);
1662 if (((draw_info->stroke.alpha != TransparentAlpha) ||
1663 (draw_info->stroke_pattern != (Image *) NULL)) &&
1664 (status != MagickFalse))
1665 {
1666 /*
1667 Draw text stroke.
1668 */
1669 annotate_info->linejoin=RoundJoin;
1670 annotate_info->affine.tx=offset->x;
1671 annotate_info->affine.ty=offset->y;
1672 (void) ConcatenateString(&annotate_info->primitive,"'");
1673 (void) DrawImage(image,annotate_info,exception);
1674 (void) CloneString(&annotate_info->primitive,"path '");
1675 }
1676 }
1677 if ((bitmap->left+bitmap->bitmap.width) > metrics->width)
1678 metrics->width=bitmap->left+bitmap->bitmap.width;
1679 if ((fabs(draw_info->interword_spacing) >= MagickEpsilon) &&
1680 (IsUTFSpace(GetUTFCode(p+grapheme[i].cluster)) != MagickFalse) &&
1681 (IsUTFSpace(code) == MagickFalse))
1682 origin.x+=(FT_Pos) (64.0*draw_info->interword_spacing);
1683 else
1684 origin.x+=(FT_Pos) grapheme[i].x_advance;
1685 metrics->origin.x=(double) origin.x;
1686 metrics->origin.y=(double) origin.y;
1687 if (last_glyph.id != 0)
1688 FT_Done_Glyph(last_glyph.image);
1689 last_glyph=glyph;
1690 code=GetUTFCode(p+grapheme[i].cluster);
1691 }
1692 if (grapheme != (GraphemeInfo *) NULL)
1693 grapheme=(GraphemeInfo *) RelinquishMagickMemory(grapheme);
1694 if (utf8 != (unsigned char *) NULL)
1695 utf8=(unsigned char *) RelinquishMagickMemory(utf8);
1696 if (last_glyph.id != 0)
1697 FT_Done_Glyph(last_glyph.image);
1698 /*
1699 Determine font metrics.
1700 */
1701 glyph.id=FT_Get_Char_Index(face,'_');
1702 glyph.origin=origin;
1703 ft_status=FT_Load_Glyph(face,glyph.id,flags);
1704 if (ft_status == 0)
1705 {
1706 ft_status=FT_Get_Glyph(face->glyph,&glyph.image);
1707 if (ft_status == 0)
1708 {
1709 ft_status=FT_Outline_Get_BBox(&((FT_OutlineGlyph) glyph.image)->
1710 outline,&bounds);
1711 if (ft_status == 0)
1712 {
1713 FT_Vector_Transform(&glyph.origin,&affine);
1714 (void) FT_Glyph_Transform(glyph.image,&affine,&glyph.origin);
1715 ft_status=FT_Glyph_To_Bitmap(&glyph.image,ft_render_mode_normal,
1716 (FT_Vector *) NULL,MagickTrue);
1717 bitmap=(FT_BitmapGlyph) glyph.image;
1718 if (bitmap->left > metrics->width)
1719 metrics->width=bitmap->left;
1720 }
1721 }
1722 FT_Done_Glyph(glyph.image);
1723 }
1724 metrics->bounds.x1/=64.0;
1725 metrics->bounds.y1/=64.0;
1726 metrics->bounds.x2/=64.0;
1727 metrics->bounds.y2/=64.0;
1728 metrics->origin.x/=64.0;
1729 metrics->origin.y/=64.0;
1730 /*
1731 Relinquish resources.
1732 */
1733 annotate_info=DestroyDrawInfo(annotate_info);
1734 (void) FT_Done_Face(face);
1735 (void) FT_Done_FreeType(library);
1736 return(status);
1737 }
1738 #else
RenderFreetype(Image * image,const DrawInfo * draw_info,const char * magick_unused (encoding),const PointInfo * offset,TypeMetric * metrics,ExceptionInfo * exception)1739 static MagickBooleanType RenderFreetype(Image *image,const DrawInfo *draw_info,
1740 const char *magick_unused(encoding),const PointInfo *offset,
1741 TypeMetric *metrics,ExceptionInfo *exception)
1742 {
1743 (void) ThrowMagickException(exception,GetMagickModule(),
1744 MissingDelegateWarning,"DelegateLibrarySupportNotBuiltIn","'%s' (Freetype)",
1745 draw_info->font != (char *) NULL ? draw_info->font : "none");
1746 return(RenderPostscript(image,draw_info,offset,metrics,exception));
1747 }
1748 #endif
1749
1750 /*
1751 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1752 % %
1753 % %
1754 % %
1755 + R e n d e r P o s t s c r i p t %
1756 % %
1757 % %
1758 % %
1759 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1760 %
1761 % RenderPostscript() renders text on the image with a Postscript font. It
1762 % also returns the bounding box of the text relative to the image.
1763 %
1764 % The format of the RenderPostscript method is:
1765 %
1766 % MagickBooleanType RenderPostscript(Image *image,DrawInfo *draw_info,
1767 % const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
1768 %
1769 % A description of each parameter follows:
1770 %
1771 % o image: the image.
1772 %
1773 % o draw_info: the draw info.
1774 %
1775 % o offset: (x,y) location of text relative to image.
1776 %
1777 % o metrics: bounding box of text.
1778 %
1779 % o exception: return any errors or warnings in this structure.
1780 %
1781 */
1782
EscapeParenthesis(const char * source)1783 static char *EscapeParenthesis(const char *source)
1784 {
1785 char
1786 *destination;
1787
1788 register char
1789 *q;
1790
1791 register const char
1792 *p;
1793
1794 size_t
1795 length;
1796
1797 assert(source != (const char *) NULL);
1798 length=0;
1799 for (p=source; *p != '\0'; p++)
1800 {
1801 if ((*p == '\\') || (*p == '(') || (*p == ')'))
1802 {
1803 if (~length < 1)
1804 ThrowFatalException(ResourceLimitFatalError,"UnableToEscapeString");
1805 length++;
1806 }
1807 length++;
1808 }
1809 destination=(char *) NULL;
1810 if (~length >= (MagickPathExtent-1))
1811 destination=(char *) AcquireQuantumMemory(length+MagickPathExtent,
1812 sizeof(*destination));
1813 if (destination == (char *) NULL)
1814 ThrowFatalException(ResourceLimitFatalError,"UnableToEscapeString");
1815 *destination='\0';
1816 q=destination;
1817 for (p=source; *p != '\0'; p++)
1818 {
1819 if ((*p == '\\') || (*p == '(') || (*p == ')'))
1820 *q++='\\';
1821 *q++=(*p);
1822 }
1823 *q='\0';
1824 return(destination);
1825 }
1826
RenderPostscript(Image * image,const DrawInfo * draw_info,const PointInfo * offset,TypeMetric * metrics,ExceptionInfo * exception)1827 static MagickBooleanType RenderPostscript(Image *image,
1828 const DrawInfo *draw_info,const PointInfo *offset,TypeMetric *metrics,
1829 ExceptionInfo *exception)
1830 {
1831 char
1832 filename[MagickPathExtent],
1833 geometry[MagickPathExtent],
1834 *text;
1835
1836 FILE
1837 *file;
1838
1839 Image
1840 *annotate_image;
1841
1842 ImageInfo
1843 *annotate_info;
1844
1845 int
1846 unique_file;
1847
1848 MagickBooleanType
1849 identity;
1850
1851 PointInfo
1852 extent,
1853 point,
1854 resolution;
1855
1856 register ssize_t
1857 i;
1858
1859 size_t
1860 length;
1861
1862 ssize_t
1863 y;
1864
1865 /*
1866 Render label with a Postscript font.
1867 */
1868 if (image->debug != MagickFalse)
1869 (void) LogMagickEvent(AnnotateEvent,GetMagickModule(),
1870 "Font %s; pointsize %g",draw_info->font != (char *) NULL ?
1871 draw_info->font : "none",draw_info->pointsize);
1872 file=(FILE *) NULL;
1873 unique_file=AcquireUniqueFileResource(filename);
1874 if (unique_file != -1)
1875 file=fdopen(unique_file,"wb");
1876 if ((unique_file == -1) || (file == (FILE *) NULL))
1877 {
1878 ThrowFileException(exception,FileOpenError,"UnableToOpenFile",filename);
1879 return(MagickFalse);
1880 }
1881 (void) FormatLocaleFile(file,"%%!PS-Adobe-3.0\n");
1882 (void) FormatLocaleFile(file,"/ReencodeType\n");
1883 (void) FormatLocaleFile(file,"{\n");
1884 (void) FormatLocaleFile(file," findfont dup length\n");
1885 (void) FormatLocaleFile(file,
1886 " dict begin { 1 index /FID ne {def} {pop pop} ifelse } forall\n");
1887 (void) FormatLocaleFile(file,
1888 " /Encoding ISOLatin1Encoding def currentdict end definefont pop\n");
1889 (void) FormatLocaleFile(file,"} bind def\n");
1890 /*
1891 Sample to compute bounding box.
1892 */
1893 identity=(fabs(draw_info->affine.sx-draw_info->affine.sy) < MagickEpsilon) &&
1894 (fabs(draw_info->affine.rx) < MagickEpsilon) &&
1895 (fabs(draw_info->affine.ry) < MagickEpsilon) ? MagickTrue : MagickFalse;
1896 extent.x=0.0;
1897 extent.y=0.0;
1898 length=strlen(draw_info->text);
1899 for (i=0; i <= (ssize_t) (length+2); i++)
1900 {
1901 point.x=fabs(draw_info->affine.sx*i*draw_info->pointsize+
1902 draw_info->affine.ry*2.0*draw_info->pointsize);
1903 point.y=fabs(draw_info->affine.rx*i*draw_info->pointsize+
1904 draw_info->affine.sy*2.0*draw_info->pointsize);
1905 if (point.x > extent.x)
1906 extent.x=point.x;
1907 if (point.y > extent.y)
1908 extent.y=point.y;
1909 }
1910 (void) FormatLocaleFile(file,"%g %g moveto\n",identity != MagickFalse ? 0.0 :
1911 extent.x/2.0,extent.y/2.0);
1912 (void) FormatLocaleFile(file,"%g %g scale\n",draw_info->pointsize,
1913 draw_info->pointsize);
1914 if ((draw_info->font == (char *) NULL) || (*draw_info->font == '\0') ||
1915 (strchr(draw_info->font,'/') != (char *) NULL))
1916 (void) FormatLocaleFile(file,
1917 "/Times-Roman-ISO dup /Times-Roman ReencodeType findfont setfont\n");
1918 else
1919 (void) FormatLocaleFile(file,
1920 "/%s-ISO dup /%s ReencodeType findfont setfont\n",draw_info->font,
1921 draw_info->font);
1922 (void) FormatLocaleFile(file,"[%g %g %g %g 0 0] concat\n",
1923 draw_info->affine.sx,-draw_info->affine.rx,-draw_info->affine.ry,
1924 draw_info->affine.sy);
1925 text=EscapeParenthesis(draw_info->text);
1926 if (identity == MagickFalse)
1927 (void) FormatLocaleFile(file,"(%s) stringwidth pop -0.5 mul -0.5 rmoveto\n",
1928 text);
1929 (void) FormatLocaleFile(file,"(%s) show\n",text);
1930 text=DestroyString(text);
1931 (void) FormatLocaleFile(file,"showpage\n");
1932 (void) fclose(file);
1933 (void) FormatLocaleString(geometry,MagickPathExtent,"%.20gx%.20g+0+0!",
1934 floor(extent.x+0.5),floor(extent.y+0.5));
1935 annotate_info=AcquireImageInfo();
1936 (void) FormatLocaleString(annotate_info->filename,MagickPathExtent,"ps:%s",
1937 filename);
1938 (void) CloneString(&annotate_info->page,geometry);
1939 if (draw_info->density != (char *) NULL)
1940 (void) CloneString(&annotate_info->density,draw_info->density);
1941 annotate_info->antialias=draw_info->text_antialias;
1942 annotate_image=ReadImage(annotate_info,exception);
1943 CatchException(exception);
1944 annotate_info=DestroyImageInfo(annotate_info);
1945 (void) RelinquishUniqueFileResource(filename);
1946 if (annotate_image == (Image *) NULL)
1947 return(MagickFalse);
1948 (void) NegateImage(annotate_image,MagickFalse,exception);
1949 resolution.x=DefaultResolution;
1950 resolution.y=DefaultResolution;
1951 if (draw_info->density != (char *) NULL)
1952 {
1953 GeometryInfo
1954 geometry_info;
1955
1956 MagickStatusType
1957 flags;
1958
1959 flags=ParseGeometry(draw_info->density,&geometry_info);
1960 resolution.x=geometry_info.rho;
1961 resolution.y=geometry_info.sigma;
1962 if ((flags & SigmaValue) == 0)
1963 resolution.y=resolution.x;
1964 }
1965 if (identity == MagickFalse)
1966 (void) TransformImage(&annotate_image,"0x0",(char *) NULL,exception);
1967 else
1968 {
1969 RectangleInfo
1970 crop_info;
1971
1972 crop_info=GetImageBoundingBox(annotate_image,exception);
1973 crop_info.height=(size_t) ((resolution.y/DefaultResolution)*
1974 ExpandAffine(&draw_info->affine)*draw_info->pointsize+0.5);
1975 crop_info.y=(ssize_t) ceil((resolution.y/DefaultResolution)*extent.y/8.0-
1976 0.5);
1977 (void) FormatLocaleString(geometry,MagickPathExtent,
1978 "%.20gx%.20g%+.20g%+.20g",(double) crop_info.width,(double)
1979 crop_info.height,(double) crop_info.x,(double) crop_info.y);
1980 (void) TransformImage(&annotate_image,geometry,(char *) NULL,exception);
1981 }
1982 metrics->pixels_per_em.x=(resolution.y/DefaultResolution)*
1983 ExpandAffine(&draw_info->affine)*draw_info->pointsize;
1984 metrics->pixels_per_em.y=metrics->pixels_per_em.x;
1985 metrics->ascent=metrics->pixels_per_em.x;
1986 metrics->descent=metrics->pixels_per_em.y/-5.0;
1987 metrics->width=(double) annotate_image->columns/
1988 ExpandAffine(&draw_info->affine);
1989 metrics->height=1.152*metrics->pixels_per_em.x;
1990 metrics->max_advance=metrics->pixels_per_em.x;
1991 metrics->bounds.x1=0.0;
1992 metrics->bounds.y1=metrics->descent;
1993 metrics->bounds.x2=metrics->ascent+metrics->descent;
1994 metrics->bounds.y2=metrics->ascent+metrics->descent;
1995 metrics->underline_position=(-2.0);
1996 metrics->underline_thickness=1.0;
1997 if (draw_info->render == MagickFalse)
1998 {
1999 annotate_image=DestroyImage(annotate_image);
2000 return(MagickTrue);
2001 }
2002 if (draw_info->fill.alpha != TransparentAlpha)
2003 {
2004 CacheView
2005 *annotate_view;
2006
2007 MagickBooleanType
2008 sync;
2009
2010 PixelInfo
2011 fill_color;
2012
2013 /*
2014 Render fill color.
2015 */
2016 if (image->alpha_trait == UndefinedPixelTrait)
2017 (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
2018 if (annotate_image->alpha_trait == UndefinedPixelTrait)
2019 (void) SetImageAlphaChannel(annotate_image,OpaqueAlphaChannel,
2020 exception);
2021 fill_color=draw_info->fill;
2022 annotate_view=AcquireAuthenticCacheView(annotate_image,exception);
2023 for (y=0; y < (ssize_t) annotate_image->rows; y++)
2024 {
2025 register ssize_t
2026 x;
2027
2028 register Quantum
2029 *magick_restrict q;
2030
2031 q=GetCacheViewAuthenticPixels(annotate_view,0,y,annotate_image->columns,
2032 1,exception);
2033 if (q == (Quantum *) NULL)
2034 break;
2035 for (x=0; x < (ssize_t) annotate_image->columns; x++)
2036 {
2037 GetFillColor(draw_info,x,y,&fill_color,exception);
2038 SetPixelAlpha(annotate_image,ClampToQuantum((((double) QuantumScale*
2039 GetPixelIntensity(annotate_image,q)*fill_color.alpha))),q);
2040 SetPixelRed(annotate_image,fill_color.red,q);
2041 SetPixelGreen(annotate_image,fill_color.green,q);
2042 SetPixelBlue(annotate_image,fill_color.blue,q);
2043 q+=GetPixelChannels(annotate_image);
2044 }
2045 sync=SyncCacheViewAuthenticPixels(annotate_view,exception);
2046 if (sync == MagickFalse)
2047 break;
2048 }
2049 annotate_view=DestroyCacheView(annotate_view);
2050 (void) CompositeImage(image,annotate_image,OverCompositeOp,MagickTrue,
2051 (ssize_t) ceil(offset->x-0.5),(ssize_t) ceil(offset->y-(metrics->ascent+
2052 metrics->descent)-0.5),exception);
2053 }
2054 annotate_image=DestroyImage(annotate_image);
2055 return(MagickTrue);
2056 }
2057
2058 /*
2059 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2060 % %
2061 % %
2062 % %
2063 + R e n d e r X 1 1 %
2064 % %
2065 % %
2066 % %
2067 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2068 %
2069 % RenderX11() renders text on the image with an X11 font. It also returns the
2070 % bounding box of the text relative to the image.
2071 %
2072 % The format of the RenderX11 method is:
2073 %
2074 % MagickBooleanType RenderX11(Image *image,DrawInfo *draw_info,
2075 % const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
2076 %
2077 % A description of each parameter follows:
2078 %
2079 % o image: the image.
2080 %
2081 % o draw_info: the draw info.
2082 %
2083 % o offset: (x,y) location of text relative to image.
2084 %
2085 % o metrics: bounding box of text.
2086 %
2087 % o exception: return any errors or warnings in this structure.
2088 %
2089 */
RenderX11(Image * image,const DrawInfo * draw_info,const PointInfo * offset,TypeMetric * metrics,ExceptionInfo * exception)2090 static MagickBooleanType RenderX11(Image *image,const DrawInfo *draw_info,
2091 const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
2092 {
2093 MagickBooleanType
2094 status;
2095
2096 if (annotate_semaphore == (SemaphoreInfo *) NULL)
2097 ActivateSemaphoreInfo(&annotate_semaphore);
2098 LockSemaphoreInfo(annotate_semaphore);
2099 status=XRenderImage(image,draw_info,offset,metrics,exception);
2100 UnlockSemaphoreInfo(annotate_semaphore);
2101 return(status);
2102 }
2103