1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 % %
4 % %
5 % %
6 % TTTTT X X TTTTT %
7 % T X X T %
8 % T X T %
9 % T X X T %
10 % T X X T %
11 % %
12 % %
13 % Render Text Onto A Canvas Image. %
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 %
37 */
38
39 /*
40 Include declarations.
41 */
42 #include "MagickCore/studio.h"
43 #include "MagickCore/annotate.h"
44 #include "MagickCore/attribute.h"
45 #include "MagickCore/blob.h"
46 #include "MagickCore/blob-private.h"
47 #include "MagickCore/cache.h"
48 #include "MagickCore/color.h"
49 #include "MagickCore/color-private.h"
50 #include "MagickCore/colorspace.h"
51 #include "MagickCore/constitute.h"
52 #include "MagickCore/draw.h"
53 #include "MagickCore/exception.h"
54 #include "MagickCore/exception-private.h"
55 #include "MagickCore/geometry.h"
56 #include "MagickCore/image.h"
57 #include "MagickCore/image-private.h"
58 #include "MagickCore/list.h"
59 #include "MagickCore/magick.h"
60 #include "MagickCore/memory_.h"
61 #include "MagickCore/monitor.h"
62 #include "MagickCore/monitor-private.h"
63 #include "MagickCore/option.h"
64 #include "MagickCore/pixel-accessor.h"
65 #include "MagickCore/quantum-private.h"
66 #include "MagickCore/static.h"
67 #include "MagickCore/statistic.h"
68 #include "MagickCore/string_.h"
69 #include "MagickCore/module.h"
70
71 /*
72 Forward declarations.
73 */
74 static MagickBooleanType
75 WriteTXTImage(const ImageInfo *,Image *,ExceptionInfo *);
76
77 /*
78 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
79 % %
80 % %
81 % %
82 % I s T X T %
83 % %
84 % %
85 % %
86 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
87 %
88 % IsTXT() returns MagickTrue if the image format type, identified by the magick
89 % string, is TXT.
90 %
91 % The format of the IsTXT method is:
92 %
93 % MagickBooleanType IsTXT(const unsigned char *magick,const size_t length)
94 %
95 % A description of each parameter follows:
96 %
97 % o magick: compare image format pattern against these bytes.
98 %
99 % o length: Specifies the length of the magick string.
100 %
101 */
IsTXT(const unsigned char * magick,const size_t length)102 static MagickBooleanType IsTXT(const unsigned char *magick,const size_t length)
103 {
104 #define MagickID "# ImageMagick pixel enumeration:"
105
106 char
107 colorspace[MagickPathExtent];
108
109 ssize_t
110 count;
111
112 unsigned long
113 columns,
114 depth,
115 rows;
116
117 if (length < 40)
118 return(MagickFalse);
119 if (LocaleNCompare((const char *) magick,MagickID,strlen(MagickID)) != 0)
120 return(MagickFalse);
121 count=(ssize_t) sscanf((const char *) magick+32,"%lu,%lu,%lu,%s",&columns,
122 &rows,&depth,colorspace);
123 if (count != 4)
124 return(MagickFalse);
125 return(MagickTrue);
126 }
127
128 /*
129 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
130 % %
131 % %
132 % %
133 % R e a d T E X T I m a g e %
134 % %
135 % %
136 % %
137 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
138 %
139 % ReadTEXTImage() reads a text file and returns it as an image. It
140 % allocates the memory necessary for the new Image structure and returns a
141 % pointer to the new image.
142 %
143 % The format of the ReadTEXTImage method is:
144 %
145 % Image *ReadTEXTImage(const ImageInfo *image_info,Image *image,
146 % char *text,ExceptionInfo *exception)
147 %
148 % A description of each parameter follows:
149 %
150 % o image_info: the image info.
151 %
152 % o image: the image.
153 %
154 % o text: the text storage buffer.
155 %
156 % o exception: return any errors or warnings in this structure.
157 %
158 */
ReadTEXTImage(const ImageInfo * image_info,ExceptionInfo * exception)159 static Image *ReadTEXTImage(const ImageInfo *image_info,
160 ExceptionInfo *exception)
161 {
162 char
163 filename[MagickPathExtent],
164 geometry[MagickPathExtent],
165 *p,
166 text[MagickPathExtent];
167
168 DrawInfo
169 *draw_info;
170
171 Image
172 *image,
173 *texture;
174
175 MagickBooleanType
176 status;
177
178 PointInfo
179 delta;
180
181 RectangleInfo
182 page;
183
184 ssize_t
185 offset;
186
187 TypeMetric
188 metrics;
189
190 /*
191 Open image file.
192 */
193 assert(image_info != (const ImageInfo *) NULL);
194 assert(image_info->signature == MagickCoreSignature);
195 if (image_info->debug != MagickFalse)
196 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
197 image_info->filename);
198 assert(exception != (ExceptionInfo *) NULL);
199 assert(exception->signature == MagickCoreSignature);
200 image=AcquireImage(image_info,exception);
201 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
202 if (status == MagickFalse)
203 {
204 image=DestroyImageList(image);
205 return((Image *) NULL);
206 }
207 (void) ResetMagickMemory(text,0,sizeof(text));
208 (void) ReadBlobString(image,text);
209 /*
210 Set the page geometry.
211 */
212 delta.x=DefaultResolution;
213 delta.y=DefaultResolution;
214 if ((image->resolution.x == 0.0) || (image->resolution.y == 0.0))
215 {
216 GeometryInfo
217 geometry_info;
218
219 MagickStatusType
220 flags;
221
222 flags=ParseGeometry(PSDensityGeometry,&geometry_info);
223 image->resolution.x=geometry_info.rho;
224 image->resolution.y=geometry_info.sigma;
225 if ((flags & SigmaValue) == 0)
226 image->resolution.y=image->resolution.x;
227 }
228 page.width=612;
229 page.height=792;
230 page.x=43;
231 page.y=43;
232 if (image_info->page != (char *) NULL)
233 (void) ParseAbsoluteGeometry(image_info->page,&page);
234 /*
235 Initialize Image structure.
236 */
237 image->columns=(size_t) floor((((double) page.width*image->resolution.x)/
238 delta.x)+0.5);
239 image->rows=(size_t) floor((((double) page.height*image->resolution.y)/
240 delta.y)+0.5);
241 status=SetImageExtent(image,image->columns,image->rows,exception);
242 if (status == MagickFalse)
243 return(DestroyImageList(image));
244 image->page.x=0;
245 image->page.y=0;
246 texture=(Image *) NULL;
247 if (image_info->texture != (char *) NULL)
248 {
249 ImageInfo
250 *read_info;
251
252 read_info=CloneImageInfo(image_info);
253 SetImageInfoBlob(read_info,(void *) NULL,0);
254 (void) CopyMagickString(read_info->filename,image_info->texture,
255 MagickPathExtent);
256 texture=ReadImage(read_info,exception);
257 read_info=DestroyImageInfo(read_info);
258 }
259 /*
260 Annotate the text image.
261 */
262 (void) SetImageBackgroundColor(image,exception);
263 draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
264 (void) CloneString(&draw_info->text,image_info->filename);
265 (void) FormatLocaleString(geometry,MagickPathExtent,"%gx%g%+g%+g",(double)
266 image->columns,(double) image->rows,(double) page.x,(double) page.y);
267 (void) CloneString(&draw_info->geometry,geometry);
268 status=GetTypeMetrics(image,draw_info,&metrics,exception);
269 if (status == MagickFalse)
270 ThrowReaderException(TypeError,"UnableToGetTypeMetrics");
271 page.y=(ssize_t) ceil((double) page.y+metrics.ascent-0.5);
272 (void) FormatLocaleString(geometry,MagickPathExtent,"%gx%g%+g%+g",(double)
273 image->columns,(double) image->rows,(double) page.x,(double) page.y);
274 (void) CloneString(&draw_info->geometry,geometry);
275 (void) CopyMagickString(filename,image_info->filename,MagickPathExtent);
276 if (*draw_info->text != '\0')
277 *draw_info->text='\0';
278 p=text;
279 for (offset=2*page.y; p != (char *) NULL; )
280 {
281 /*
282 Annotate image with text.
283 */
284 (void) ConcatenateString(&draw_info->text,text);
285 (void) ConcatenateString(&draw_info->text,"\n");
286 offset+=(ssize_t) (metrics.ascent-metrics.descent);
287 if (image->previous == (Image *) NULL)
288 {
289 status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) offset,
290 image->rows);
291 if (status == MagickFalse)
292 break;
293 }
294 p=ReadBlobString(image,text);
295 if ((offset < (ssize_t) image->rows) && (p != (char *) NULL))
296 continue;
297 if (texture != (Image *) NULL)
298 {
299 MagickProgressMonitor
300 progress_monitor;
301
302 progress_monitor=SetImageProgressMonitor(image,
303 (MagickProgressMonitor) NULL,image->client_data);
304 (void) TextureImage(image,texture,exception);
305 (void) SetImageProgressMonitor(image,progress_monitor,
306 image->client_data);
307 }
308 (void) AnnotateImage(image,draw_info,exception);
309 if (p == (char *) NULL)
310 break;
311 /*
312 Page is full-- allocate next image structure.
313 */
314 *draw_info->text='\0';
315 offset=2*page.y;
316 AcquireNextImage(image_info,image,exception);
317 if (GetNextImageInList(image) == (Image *) NULL)
318 {
319 image=DestroyImageList(image);
320 return((Image *) NULL);
321 }
322 image->next->columns=image->columns;
323 image->next->rows=image->rows;
324 image=SyncNextImageInList(image);
325 (void) CopyMagickString(image->filename,filename,MagickPathExtent);
326 (void) SetImageBackgroundColor(image,exception);
327 status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
328 GetBlobSize(image));
329 if (status == MagickFalse)
330 break;
331 }
332 if (texture != (Image *) NULL)
333 {
334 MagickProgressMonitor
335 progress_monitor;
336
337 progress_monitor=SetImageProgressMonitor(image,
338 (MagickProgressMonitor) NULL,image->client_data);
339 (void) TextureImage(image,texture,exception);
340 (void) SetImageProgressMonitor(image,progress_monitor,image->client_data);
341 }
342 (void) AnnotateImage(image,draw_info,exception);
343 if (texture != (Image *) NULL)
344 texture=DestroyImage(texture);
345 draw_info=DestroyDrawInfo(draw_info);
346 (void) CloseBlob(image);
347 return(GetFirstImageInList(image));
348 }
349
350 /*
351 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
352 % %
353 % %
354 % %
355 % R e a d T X T I m a g e %
356 % %
357 % %
358 % %
359 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
360 %
361 % ReadTXTImage() reads a text file and returns it as an image. It allocates
362 % the memory necessary for the new Image structure and returns a pointer to
363 % the new image.
364 %
365 % The format of the ReadTXTImage method is:
366 %
367 % Image *ReadTXTImage(const ImageInfo *image_info,ExceptionInfo *exception)
368 %
369 % A description of each parameter follows:
370 %
371 % o image_info: the image info.
372 %
373 % o exception: return any errors or warnings in this structure.
374 %
375 */
ReadTXTImage(const ImageInfo * image_info,ExceptionInfo * exception)376 static Image *ReadTXTImage(const ImageInfo *image_info,ExceptionInfo *exception)
377 {
378 char
379 colorspace[MagickPathExtent],
380 text[MagickPathExtent];
381
382 Image
383 *image;
384
385 long
386 x_offset,
387 y_offset;
388
389 PixelInfo
390 pixel;
391
392 MagickBooleanType
393 status;
394
395 QuantumAny
396 range;
397
398 register ssize_t
399 i,
400 x;
401
402 register Quantum
403 *q;
404
405 ssize_t
406 count,
407 type,
408 y;
409
410 unsigned long
411 depth,
412 height,
413 max_value,
414 width;
415
416 /*
417 Open image file.
418 */
419 assert(image_info != (const ImageInfo *) NULL);
420 assert(image_info->signature == MagickCoreSignature);
421 if (image_info->debug != MagickFalse)
422 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
423 image_info->filename);
424 assert(exception != (ExceptionInfo *) NULL);
425 assert(exception->signature == MagickCoreSignature);
426 image=AcquireImage(image_info,exception);
427 status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
428 if (status == MagickFalse)
429 {
430 image=DestroyImageList(image);
431 return((Image *) NULL);
432 }
433 (void) ResetMagickMemory(text,0,sizeof(text));
434 (void) ReadBlobString(image,text);
435 if (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) != 0)
436 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
437 do
438 {
439 width=0;
440 height=0;
441 max_value=0;
442 *colorspace='\0';
443 count=(ssize_t) sscanf(text+32,"%lu,%lu,%lu,%s",&width,&height,&max_value,
444 colorspace);
445 if ((count != 4) || (width == 0) || (height == 0) || (max_value == 0))
446 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
447 image->columns=width;
448 image->rows=height;
449 for (depth=1; (GetQuantumRange(depth)+1) < max_value; depth++) ;
450 image->depth=depth;
451 status=SetImageExtent(image,image->columns,image->rows,exception);
452 if (status == MagickFalse)
453 return(DestroyImageList(image));
454 LocaleLower(colorspace);
455 i=(ssize_t) strlen(colorspace)-1;
456 image->alpha_trait=UndefinedPixelTrait;
457 if ((i > 0) && (colorspace[i] == 'a'))
458 {
459 colorspace[i]='\0';
460 image->alpha_trait=BlendPixelTrait;
461 }
462 type=ParseCommandOption(MagickColorspaceOptions,MagickFalse,colorspace);
463 if (type < 0)
464 ThrowReaderException(CorruptImageError,"ImproperImageHeader");
465 (void) SetImageBackgroundColor(image,exception);
466 (void) SetImageColorspace(image,(ColorspaceType) type,exception);
467 GetPixelInfo(image,&pixel);
468 range=GetQuantumRange(image->depth);
469 for (y=0; y < (ssize_t) image->rows; y++)
470 {
471 double
472 alpha,
473 black,
474 blue,
475 green,
476 red;
477
478 red=0.0;
479 green=0.0;
480 blue=0.0;
481 black=0.0;
482 alpha=0.0;
483 for (x=0; x < (ssize_t) image->columns; x++)
484 {
485 if (ReadBlobString(image,text) == (char *) NULL)
486 break;
487 switch (image->colorspace)
488 {
489 case GRAYColorspace:
490 {
491 if (image->alpha_trait != UndefinedPixelTrait)
492 {
493 count=(ssize_t) sscanf(text,"%ld,%ld: (%lf%*[%,]%lf%*[%,]",
494 &x_offset,&y_offset,&red,&alpha);
495 green=red;
496 blue=red;
497 break;
498 }
499 count=(ssize_t) sscanf(text,"%ld,%ld: (%lf%*[%,]",&x_offset,
500 &y_offset,&red);
501 green=red;
502 blue=red;
503 break;
504 }
505 case CMYKColorspace:
506 {
507 if (image->alpha_trait != UndefinedPixelTrait)
508 {
509 count=(ssize_t) sscanf(text,
510 "%ld,%ld: (%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]",
511 &x_offset,&y_offset,&red,&green,&blue,&black,&alpha);
512 break;
513 }
514 count=(ssize_t) sscanf(text,
515 "%ld,%ld: (%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]",&x_offset,
516 &y_offset,&red,&green,&blue,&black);
517 break;
518 }
519 default:
520 {
521 if (image->alpha_trait != UndefinedPixelTrait)
522 {
523 count=(ssize_t) sscanf(text,
524 "%ld,%ld: (%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]",
525 &x_offset,&y_offset,&red,&green,&blue,&alpha);
526 break;
527 }
528 count=(ssize_t) sscanf(text,
529 "%ld,%ld: (%lf%*[%,]%lf%*[%,]%lf%*[%,]",&x_offset,
530 &y_offset,&red,&green,&blue);
531 break;
532 }
533 }
534 if (strchr(text,'%') != (char *) NULL)
535 {
536 red*=0.01*range;
537 green*=0.01*range;
538 blue*=0.01*range;
539 black*=0.01*range;
540 alpha*=0.01*range;
541 }
542 if (image->colorspace == LabColorspace)
543 {
544 green+=(range+1)/2.0;
545 blue+=(range+1)/2.0;
546 }
547 pixel.red=(MagickRealType) ScaleAnyToQuantum((QuantumAny) (red+0.5),
548 range);
549 pixel.green=(MagickRealType) ScaleAnyToQuantum((QuantumAny) (green+0.5),
550 range);
551 pixel.blue=(MagickRealType) ScaleAnyToQuantum((QuantumAny) (blue+0.5),
552 range);
553 pixel.black=(MagickRealType) ScaleAnyToQuantum((QuantumAny) (black+0.5),
554 range);
555 pixel.alpha=(MagickRealType) ScaleAnyToQuantum((QuantumAny) (alpha+0.5),
556 range);
557 q=GetAuthenticPixels(image,(ssize_t) x_offset,(ssize_t) y_offset,1,1,
558 exception);
559 if (q == (Quantum *) NULL)
560 continue;
561 SetPixelViaPixelInfo(image,&pixel,q);
562 if (SyncAuthenticPixels(image,exception) == MagickFalse)
563 break;
564 }
565 }
566 (void) ReadBlobString(image,text);
567 if (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) == 0)
568 {
569 /*
570 Allocate next image structure.
571 */
572 AcquireNextImage(image_info,image,exception);
573 if (GetNextImageInList(image) == (Image *) NULL)
574 {
575 image=DestroyImageList(image);
576 return((Image *) NULL);
577 }
578 image=SyncNextImageInList(image);
579 status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
580 GetBlobSize(image));
581 if (status == MagickFalse)
582 break;
583 }
584 } while (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) == 0);
585 (void) CloseBlob(image);
586 return(GetFirstImageInList(image));
587 }
588
589 /*
590 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
591 % %
592 % %
593 % %
594 % R e g i s t e r T X T I m a g e %
595 % %
596 % %
597 % %
598 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
599 %
600 % RegisterTXTImage() adds attributes for the TXT image format to the
601 % list of supported formats. The attributes include the image format
602 % tag, a method to read and/or write the format, whether the format
603 % supports the saving of more than one frame to the same file or blob,
604 % whether the format supports native in-memory I/O, and a brief
605 % description of the format.
606 %
607 % The format of the RegisterTXTImage method is:
608 %
609 % size_t RegisterTXTImage(void)
610 %
611 */
RegisterTXTImage(void)612 ModuleExport size_t RegisterTXTImage(void)
613 {
614 MagickInfo
615 *entry;
616
617 entry=AcquireMagickInfo("TXT","SPARSE-COLOR","Sparse Color");
618 entry->encoder=(EncodeImageHandler *) WriteTXTImage;
619 entry->flags|=CoderRawSupportFlag;
620 entry->flags|=CoderEndianSupportFlag;
621 (void) RegisterMagickInfo(entry);
622 entry=AcquireMagickInfo("TXT","TEXT","Text");
623 entry->decoder=(DecodeImageHandler *) ReadTEXTImage;
624 entry->format_type=ImplicitFormatType;
625 entry->flags|=CoderRawSupportFlag;
626 entry->flags|=CoderEndianSupportFlag;
627 (void) RegisterMagickInfo(entry);
628 entry=AcquireMagickInfo("TXT","TXT","Text");
629 entry->decoder=(DecodeImageHandler *) ReadTXTImage;
630 entry->encoder=(EncodeImageHandler *) WriteTXTImage;
631 entry->magick=(IsImageFormatHandler *) IsTXT;
632 (void) RegisterMagickInfo(entry);
633 return(MagickImageCoderSignature);
634 }
635
636 /*
637 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
638 % %
639 % %
640 % %
641 % U n r e g i s t e r T X T I m a g e %
642 % %
643 % %
644 % %
645 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
646 %
647 % UnregisterTXTImage() removes format registrations made by the
648 % TXT module from the list of supported format.
649 %
650 % The format of the UnregisterTXTImage method is:
651 %
652 % UnregisterTXTImage(void)
653 %
654 */
UnregisterTXTImage(void)655 ModuleExport void UnregisterTXTImage(void)
656 {
657 (void) UnregisterMagickInfo("SPARSE-COLOR");
658 (void) UnregisterMagickInfo("TEXT");
659 (void) UnregisterMagickInfo("TXT");
660 }
661
662 /*
663 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
664 % %
665 % %
666 % %
667 % W r i t e T X T I m a g e %
668 % %
669 % %
670 % %
671 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
672 %
673 % WriteTXTImage writes the pixel values as text numbers.
674 %
675 % The format of the WriteTXTImage method is:
676 %
677 % MagickBooleanType WriteTXTImage(const ImageInfo *image_info,
678 % Image *image,ExceptionInfo *exception)
679 %
680 % A description of each parameter follows.
681 %
682 % o image_info: the image info.
683 %
684 % o image: The image.
685 %
686 % o exception: return any errors or warnings in this structure.
687 %
688 */
WriteTXTImage(const ImageInfo * image_info,Image * image,ExceptionInfo * exception)689 static MagickBooleanType WriteTXTImage(const ImageInfo *image_info,Image *image,
690 ExceptionInfo *exception)
691 {
692 char
693 buffer[MagickPathExtent],
694 colorspace[MagickPathExtent],
695 tuple[MagickPathExtent];
696
697 MagickBooleanType
698 status;
699
700 MagickOffsetType
701 scene;
702
703 PixelInfo
704 pixel;
705
706 register const Quantum
707 *p;
708
709 register ssize_t
710 x;
711
712 ssize_t
713 y;
714
715 /*
716 Open output image file.
717 */
718 assert(image_info != (const ImageInfo *) NULL);
719 assert(image_info->signature == MagickCoreSignature);
720 assert(image != (Image *) NULL);
721 assert(image->signature == MagickCoreSignature);
722 if (image->debug != MagickFalse)
723 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
724 status=OpenBlob(image_info,image,WriteBlobMode,exception);
725 if (status == MagickFalse)
726 return(status);
727 scene=0;
728 do
729 {
730 ComplianceType
731 compliance;
732
733 const char
734 *value;
735
736 (void) CopyMagickString(colorspace,CommandOptionToMnemonic(
737 MagickColorspaceOptions,(ssize_t) image->colorspace),MagickPathExtent);
738 LocaleLower(colorspace);
739 image->depth=GetImageQuantumDepth(image,MagickTrue);
740 if (image->alpha_trait != UndefinedPixelTrait)
741 (void) ConcatenateMagickString(colorspace,"a",MagickPathExtent);
742 compliance=NoCompliance;
743 value=GetImageOption(image_info,"txt:compliance");
744 if (value != (char *) NULL)
745 compliance=(ComplianceType) ParseCommandOption(MagickComplianceOptions,
746 MagickFalse,value);
747 if (LocaleCompare(image_info->magick,"SPARSE-COLOR") != 0)
748 {
749 size_t
750 depth;
751
752 depth=compliance == SVGCompliance ? image->depth :
753 MAGICKCORE_QUANTUM_DEPTH;
754 (void) FormatLocaleString(buffer,MagickPathExtent,
755 "# ImageMagick pixel enumeration: %.20g,%.20g,%.20g,%s\n",(double)
756 image->columns,(double) image->rows,(double) ((MagickOffsetType)
757 GetQuantumRange(depth)),colorspace);
758 (void) WriteBlobString(image,buffer);
759 }
760 GetPixelInfo(image,&pixel);
761 for (y=0; y < (ssize_t) image->rows; y++)
762 {
763 p=GetVirtualPixels(image,0,y,image->columns,1,exception);
764 if (p == (const Quantum *) NULL)
765 break;
766 for (x=0; x < (ssize_t) image->columns; x++)
767 {
768 GetPixelInfoPixel(image,p,&pixel);
769 if (pixel.colorspace == LabColorspace)
770 {
771 pixel.green-=(QuantumRange+1)/2.0;
772 pixel.blue-=(QuantumRange+1)/2.0;
773 }
774 if (LocaleCompare(image_info->magick,"SPARSE-COLOR") == 0)
775 {
776 /*
777 Sparse-color format.
778 */
779 if (GetPixelAlpha(image,p) == (Quantum) OpaqueAlpha)
780 {
781 GetColorTuple(&pixel,MagickFalse,tuple);
782 (void) FormatLocaleString(buffer,MagickPathExtent,
783 "%.20g,%.20g,",(double) x,(double) y);
784 (void) WriteBlobString(image,buffer);
785 (void) WriteBlobString(image,tuple);
786 (void) WriteBlobString(image," ");
787 }
788 p+=GetPixelChannels(image);
789 continue;
790 }
791 (void) FormatLocaleString(buffer,MagickPathExtent,"%.20g,%.20g: ",
792 (double) x,(double) y);
793 (void) WriteBlobString(image,buffer);
794 (void) CopyMagickString(tuple,"(",MagickPathExtent);
795 if (pixel.colorspace == GRAYColorspace)
796 ConcatenateColorComponent(&pixel,GrayPixelChannel,compliance,
797 tuple);
798 else
799 {
800 ConcatenateColorComponent(&pixel,RedPixelChannel,compliance,tuple);
801 (void) ConcatenateMagickString(tuple,",",MagickPathExtent);
802 ConcatenateColorComponent(&pixel,GreenPixelChannel,compliance,
803 tuple);
804 (void) ConcatenateMagickString(tuple,",",MagickPathExtent);
805 ConcatenateColorComponent(&pixel,BluePixelChannel,compliance,tuple);
806 }
807 if (pixel.colorspace == CMYKColorspace)
808 {
809 (void) ConcatenateMagickString(tuple,",",MagickPathExtent);
810 ConcatenateColorComponent(&pixel,BlackPixelChannel,compliance,
811 tuple);
812 }
813 if (pixel.alpha_trait != UndefinedPixelTrait)
814 {
815 (void) ConcatenateMagickString(tuple,",",MagickPathExtent);
816 ConcatenateColorComponent(&pixel,AlphaPixelChannel,compliance,
817 tuple);
818 }
819 (void) ConcatenateMagickString(tuple,")",MagickPathExtent);
820 (void) WriteBlobString(image,tuple);
821 (void) WriteBlobString(image," ");
822 GetColorTuple(&pixel,MagickTrue,tuple);
823 (void) FormatLocaleString(buffer,MagickPathExtent,"%s",tuple);
824 (void) WriteBlobString(image,buffer);
825 (void) WriteBlobString(image," ");
826 (void) QueryColorname(image,&pixel,SVGCompliance,tuple,exception);
827 (void) WriteBlobString(image,tuple);
828 (void) WriteBlobString(image,"\n");
829 p+=GetPixelChannels(image);
830 }
831 status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
832 image->rows);
833 if (status == MagickFalse)
834 break;
835 }
836 if (GetNextImageInList(image) == (Image *) NULL)
837 break;
838 image=SyncNextImageInList(image);
839 status=SetImageProgress(image,SaveImagesTag,scene++,
840 GetImageListLength(image));
841 if (status == MagickFalse)
842 break;
843 } while (image_info->adjoin != MagickFalse);
844 (void) CloseBlob(image);
845 return(MagickTrue);
846 }
847