granicus.if.org Git - imagemagick/blob - coders/txt.c

   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 %                                John Cristy                                  %
  17 %                                 July 1992                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2012 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 \f
  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 \f
  71 /*
  72   Forward declarations.
  73 */
  74 static MagickBooleanType
  75   WriteTXTImage(const ImageInfo *,Image *,ExceptionInfo *);
  76 \f
  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 */
 102 static MagickBooleanType IsTXT(const unsigned char *magick,const size_t length)
 103 {
 104 #define MagickID  "# ImageMagick pixel enumeration:"
 105
 106   char
 107     colorspace[MaxTextExtent];
 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 \f
 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 */
 159 static Image *ReadTEXTImage(const ImageInfo *image_info,Image *image,
 160   char *text,ExceptionInfo *exception)
 161 {
 162   char
 163     filename[MaxTextExtent],
 164     geometry[MaxTextExtent],
 165     *p;
 166
 167   DrawInfo
 168     *draw_info;
 169
 170   Image
 171     *texture;
 172
 173   MagickBooleanType
 174     status;
 175
 176   PointInfo
 177     delta;
 178
 179   RectangleInfo
 180     page;
 181
 182   ssize_t
 183     offset;
 184
 185   TypeMetric
 186     metrics;
 187
 188   /*
 189     Open image file.
 190   */
 191   assert(image_info != (const ImageInfo *) NULL);
 192   assert(image_info->signature == MagickSignature);
 193   if (image_info->debug != MagickFalse)
 194     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 195       image_info->filename);
 196   assert(exception != (ExceptionInfo *) NULL);
 197   assert(exception->signature == MagickSignature);
 198   /*
 199     Set the page geometry.
 200   */
 201   delta.x=DefaultResolution;
 202   delta.y=DefaultResolution;
 203   if ((image->resolution.x == 0.0) || (image->resolution.y == 0.0))
 204     {
 205       GeometryInfo
 206         geometry_info;
 207
 208       MagickStatusType
 209         flags;
 210
 211       flags=ParseGeometry(PSDensityGeometry,&geometry_info);
 212       image->resolution.x=geometry_info.rho;
 213       image->resolution.y=geometry_info.sigma;
 214       if ((flags & SigmaValue) == 0)
 215         image->resolution.y=image->resolution.x;
 216     }
 217   page.width=612;
 218   page.height=792;
 219   page.x=43;
 220   page.y=43;
 221   if (image_info->page != (char *) NULL)
 222     (void) ParseAbsoluteGeometry(image_info->page,&page);
 223   /*
 224     Initialize Image structure.
 225   */
 226   image->columns=(size_t) floor((((double) page.width*image->resolution.x)/
 227     delta.x)+0.5);
 228   image->rows=(size_t) floor((((double) page.height*image->resolution.y)/
 229     delta.y)+0.5);
 230   image->page.x=0;
 231   image->page.y=0;
 232   texture=(Image *) NULL;
 233   if (image_info->texture != (char *) NULL)
 234     {
 235       ImageInfo
 236         *read_info;
 237
 238       read_info=CloneImageInfo(image_info);
 239       SetImageInfoBlob(read_info,(void *) NULL,0);
 240       (void) CopyMagickString(read_info->filename,image_info->texture,
 241         MaxTextExtent);
 242       texture=ReadImage(read_info,exception);
 243       read_info=DestroyImageInfo(read_info);
 244     }
 245   /*
 246     Annotate the text image.
 247   */
 248   (void) SetImageBackgroundColor(image,exception);
 249   draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
 250   (void) CloneString(&draw_info->text,image_info->filename);
 251   (void) FormatLocaleString(geometry,MaxTextExtent,"0x0%+ld%+ld",(long) page.x,
 252     (long) page.y);
 253   (void) CloneString(&draw_info->geometry,geometry);
 254   status=GetTypeMetrics(image,draw_info,&metrics,exception);
 255   if (status == MagickFalse)
 256     ThrowReaderException(TypeError,"UnableToGetTypeMetrics");
 257   page.y=(ssize_t) ceil((double) page.y+metrics.ascent-0.5);
 258   (void) FormatLocaleString(geometry,MaxTextExtent,"0x0%+ld%+ld",(long) page.x,
 259     (long) page.y);
 260   (void) CloneString(&draw_info->geometry,geometry);
 261   (void) CopyMagickString(filename,image_info->filename,MaxTextExtent);
 262   if (*draw_info->text != '\0')
 263     *draw_info->text='\0';
 264   p=text;
 265   for (offset=2*page.y; p != (char *) NULL; )
 266   {
 267     /*
 268       Annotate image with text.
 269     */
 270     (void) ConcatenateString(&draw_info->text,text);
 271     (void) ConcatenateString(&draw_info->text,"\n");
 272     offset+=(ssize_t) (metrics.ascent-metrics.descent);
 273     if (image->previous == (Image *) NULL)
 274       {
 275         status=SetImageProgress(image,LoadImageTag,offset,image->rows);
 276         if (status == MagickFalse)
 277           break;
 278       }
 279     p=ReadBlobString(image,text);
 280     if ((offset < (ssize_t) image->rows) && (p != (char *) NULL))
 281       continue;
 282     if (texture != (Image *) NULL)
 283       {
 284         MagickProgressMonitor
 285           progress_monitor;
 286
 287         progress_monitor=SetImageProgressMonitor(image,
 288           (MagickProgressMonitor) NULL,image->client_data);
 289         (void) TextureImage(image,texture,exception);
 290         (void) SetImageProgressMonitor(image,progress_monitor,
 291           image->client_data);
 292       }
 293     (void) AnnotateImage(image,draw_info,exception);
 294     if (p == (char *) NULL)
 295       break;
 296     /*
 297       Page is full-- allocate next image structure.
 298     */
 299     *draw_info->text='\0';
 300     offset=2*page.y;
 301     AcquireNextImage(image_info,image,exception);
 302     if (GetNextImageInList(image) == (Image *) NULL)
 303       {
 304         image=DestroyImageList(image);
 305         return((Image *) NULL);
 306       }
 307     image->next->columns=image->columns;
 308     image->next->rows=image->rows;
 309     image=SyncNextImageInList(image);
 310     (void) CopyMagickString(image->filename,filename,MaxTextExtent);
 311     (void) SetImageBackgroundColor(image,exception);
 312     status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
 313       GetBlobSize(image));
 314     if (status == MagickFalse)
 315       break;
 316   }
 317   if (texture != (Image *) NULL)
 318     {
 319       MagickProgressMonitor
 320         progress_monitor;
 321
 322       progress_monitor=SetImageProgressMonitor(image,
 323         (MagickProgressMonitor) NULL,image->client_data);
 324       (void) TextureImage(image,texture,exception);
 325       (void) SetImageProgressMonitor(image,progress_monitor,image->client_data);
 326     }
 327   (void) AnnotateImage(image,draw_info,exception);
 328   if (texture != (Image *) NULL)
 329     texture=DestroyImage(texture);
 330   draw_info=DestroyDrawInfo(draw_info);
 331   (void) CloseBlob(image);
 332   return(GetFirstImageInList(image));
 333 }
 334 \f
 335 /*
 336 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 337 %                                                                             %
 338 %                                                                             %
 339 %                                                                             %
 340 %   R e a d T X T I m a g e                                                   %
 341 %                                                                             %
 342 %                                                                             %
 343 %                                                                             %
 344 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 345 %
 346 %  ReadTXTImage() reads a text file and returns it as an image.  It allocates
 347 %  the memory necessary for the new Image structure and returns a pointer to
 348 %  the new image.
 349 %
 350 %  The format of the ReadTXTImage method is:
 351 %
 352 %      Image *ReadTXTImage(const ImageInfo *image_info,ExceptionInfo *exception)
 353 %
 354 %  A description of each parameter follows:
 355 %
 356 %    o image_info: the image info.
 357 %
 358 %    o exception: return any errors or warnings in this structure.
 359 %
 360 */
 361 static Image *ReadTXTImage(const ImageInfo *image_info,ExceptionInfo *exception)
 362 {
 363   char
 364     colorspace[MaxTextExtent],
 365     text[MaxTextExtent];
 366
 367   Image
 368     *image;
 369
 370   long
 371     type,
 372     x_offset,
 373     y,
 374     y_offset;
 375
 376   PixelInfo
 377     pixel;
 378
 379   MagickBooleanType
 380     status;
 381
 382   QuantumAny
 383     range;
 384
 385   register ssize_t
 386     i,
 387     x;
 388
 389   register Quantum
 390     *q;
 391
 392   ssize_t
 393     count;
 394
 395   unsigned long
 396     depth,
 397     height,
 398     max_value,
 399     width;
 400
 401   /*
 402     Open image file.
 403   */
 404   assert(image_info != (const ImageInfo *) NULL);
 405   assert(image_info->signature == MagickSignature);
 406   if (image_info->debug != MagickFalse)
 407     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 408       image_info->filename);
 409   assert(exception != (ExceptionInfo *) NULL);
 410   assert(exception->signature == MagickSignature);
 411   image=AcquireImage(image_info,exception);
 412   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 413   if (status == MagickFalse)
 414     {
 415       image=DestroyImageList(image);
 416       return((Image *) NULL);
 417     }
 418   (void) ResetMagickMemory(text,0,sizeof(text));
 419   (void) ReadBlobString(image,text);
 420   if (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) != 0)
 421     return(ReadTEXTImage(image_info,image,text,exception));
 422   do
 423   {
 424     *colorspace='\0';
 425     count=(ssize_t) sscanf(text+32,"%lu,%lu,%lu,%s",&width,&height,&max_value,
 426       colorspace);
 427     if (count != 4)
 428       ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 429     image->columns=width;
 430     image->rows=height;
 431     for (depth=1; (GetQuantumRange(depth)+1) < max_value; depth++) ;
 432     image->depth=depth;
 433     LocaleLower(colorspace);
 434     i=(ssize_t) strlen(colorspace)-1;
 435     image->matte=MagickFalse;
 436     if ((i > 0) && (colorspace[i] == 'a'))
 437       {
 438         colorspace[i]='\0';
 439         image->matte=MagickTrue;
 440       }
 441     type=ParseCommandOption(MagickColorspaceOptions,MagickFalse,colorspace);
 442     if (type < 0)
 443       ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 444     (void) SetImageBackgroundColor(image,exception);
 445     (void) SetImageColorspace(image,(ColorspaceType) type,exception);
 446     GetPixelInfo(image,&pixel);
 447     range=GetQuantumRange(image->depth);
 448     for (y=0; y < (ssize_t) image->rows; y++)
 449     {
 450       for (x=0; x < (ssize_t) image->columns; x++)
 451       {
 452         if (ReadBlobString(image,text) == (char *) NULL)
 453           break;
 454         switch (image->colorspace)
 455         {
 456           case GRAYColorspace:
 457           {
 458             if (image->matte != MagickFalse)
 459               {
 460                 count=(ssize_t) sscanf(text,"%ld,%ld: (%lf,%lf",&x_offset,
 461                   &y_offset,&pixel.red,&pixel.alpha);
 462                 pixel.green=pixel.red;
 463                 pixel.blue=pixel.red;
 464                 break;
 465               }
 466             count=(ssize_t) sscanf(text,"%ld,%ld: (%lf",&x_offset,&y_offset,
 467               &pixel.red);
 468             pixel.green=pixel.red;
 469             pixel.blue=pixel.red;
 470             break;
 471           }
 472           case CMYKColorspace:
 473           {
 474             if (image->matte != MagickFalse)
 475               {
 476                 count=(ssize_t) sscanf(text,"%ld,%ld: (%lf,%lf,%lf,%lf,%lf",
 477                   &x_offset,&y_offset,&pixel.red,&pixel.green,&pixel.blue,
 478                   &pixel.black,&pixel.alpha);
 479                 break;
 480               }
 481             count=(ssize_t) sscanf(text,"%ld,%ld: (%lf,%lf,%lf,%lf",&x_offset,
 482               &y_offset,&pixel.red,&pixel.green,&pixel.blue,&pixel.black);
 483             break;
 484           }
 485           default:
 486           {
 487             if (image->matte != MagickFalse)
 488               {
 489                 count=(ssize_t) sscanf(text,"%ld,%ld: (%lf,%lf,%lf,%lf",
 490                   &x_offset,&y_offset,&pixel.red,&pixel.green,&pixel.blue,
 491                   &pixel.alpha);
 492                 break;
 493               }
 494             count=(ssize_t) sscanf(text,"%ld,%ld: (%lf,%lf,%lf",&x_offset,
 495               &y_offset,&pixel.red,&pixel.green,&pixel.blue);
 496             break;
 497           }
 498         }
 499         pixel.red=ScaleAnyToQuantum(pixel.red,range);
 500         pixel.green=ScaleAnyToQuantum(pixel.green,range);
 501         pixel.blue=ScaleAnyToQuantum(pixel.blue,range);
 502         pixel.black=ScaleAnyToQuantum(pixel.black,range);
 503         pixel.alpha=ScaleAnyToQuantum(pixel.alpha,range);
 504         q=GetAuthenticPixels(image,x_offset,y_offset,1,1,exception);
 505         if (q == (Quantum *) NULL)
 506           continue;
 507         SetPixelInfoPixel(image,&pixel,q);
 508         if (SyncAuthenticPixels(image,exception) == MagickFalse)
 509           break;
 510       }
 511     }
 512     (void) ReadBlobString(image,text);
 513     if (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) == 0)
 514       {
 515         /*
 516           Allocate next image structure.
 517         */
 518         AcquireNextImage(image_info,image,exception);
 519         if (GetNextImageInList(image) == (Image *) NULL)
 520           {
 521             image=DestroyImageList(image);
 522             return((Image *) NULL);
 523           }
 524         image=SyncNextImageInList(image);
 525         status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
 526           GetBlobSize(image));
 527         if (status == MagickFalse)
 528           break;
 529       }
 530   } while (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) == 0);
 531   (void) CloseBlob(image);
 532   return(GetFirstImageInList(image));
 533 }
 534 \f
 535 /*
 536 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 537 %                                                                             %
 538 %                                                                             %
 539 %                                                                             %
 540 %   R e g i s t e r T X T I m a g e                                           %
 541 %                                                                             %
 542 %                                                                             %
 543 %                                                                             %
 544 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 545 %
 546 %  RegisterTXTImage() adds attributes for the TXT image format to the
 547 %  list of supported formats.  The attributes include the image format
 548 %  tag, a method to read and/or write the format, whether the format
 549 %  supports the saving of more than one frame to the same file or blob,
 550 %  whether the format supports native in-memory I/O, and a brief
 551 %  description of the format.
 552 %
 553 %  The format of the RegisterTXTImage method is:
 554 %
 555 %      size_t RegisterTXTImage(void)
 556 %
 557 */
 558 ModuleExport size_t RegisterTXTImage(void)
 559 {
 560   MagickInfo
 561     *entry;
 562
 563   entry=SetMagickInfo("TEXT");
 564   entry->decoder=(DecodeImageHandler *) ReadTXTImage;
 565   entry->encoder=(EncodeImageHandler *) WriteTXTImage;
 566   entry->raw=MagickTrue;
 567   entry->endian_support=MagickTrue;
 568   entry->description=ConstantString("Text");
 569   entry->module=ConstantString("TXT");
 570   (void) RegisterMagickInfo(entry);
 571   entry=SetMagickInfo("TXT");
 572   entry->decoder=(DecodeImageHandler *) ReadTXTImage;
 573   entry->encoder=(EncodeImageHandler *) WriteTXTImage;
 574   entry->description=ConstantString("Text");
 575   entry->magick=(IsImageFormatHandler *) IsTXT;
 576   entry->module=ConstantString("TXT");
 577   (void) RegisterMagickInfo(entry);
 578   return(MagickImageCoderSignature);
 579 }
 580 \f
 581 /*
 582 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 583 %                                                                             %
 584 %                                                                             %
 585 %                                                                             %
 586 %   U n r e g i s t e r T X T I m a g e                                       %
 587 %                                                                             %
 588 %                                                                             %
 589 %                                                                             %
 590 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 591 %
 592 %  UnregisterTXTImage() removes format registrations made by the
 593 %  TXT module from the list of supported format.
 594 %
 595 %  The format of the UnregisterTXTImage method is:
 596 %
 597 %      UnregisterTXTImage(void)
 598 %
 599 */
 600 ModuleExport void UnregisterTXTImage(void)
 601 {
 602   (void) UnregisterMagickInfo("TEXT");
 603   (void) UnregisterMagickInfo("TXT");
 604 }
 605 \f
 606 /*
 607 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 608 %                                                                             %
 609 %                                                                             %
 610 %                                                                             %
 611 %   W r i t e T X T I m a g e                                                 %
 612 %                                                                             %
 613 %                                                                             %
 614 %                                                                             %
 615 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 616 %
 617 %  WriteTXTImage writes the pixel values as text numbers.
 618 %
 619 %  The format of the WriteTXTImage method is:
 620 %
 621 %      MagickBooleanType WriteTXTImage(const ImageInfo *image_info,
 622 %        Image *image,ExceptionInfo *exception)
 623 %
 624 %  A description of each parameter follows.
 625 %
 626 %    o image_info: the image info.
 627 %
 628 %    o image:  The image.
 629 %
 630 %    o exception: return any errors or warnings in this structure.
 631 %
 632 */
 633 static MagickBooleanType WriteTXTImage(const ImageInfo *image_info,Image *image,
 634   ExceptionInfo *exception)
 635 {
 636   char
 637     buffer[MaxTextExtent],
 638     colorspace[MaxTextExtent],
 639     tuple[MaxTextExtent];
 640
 641   MagickBooleanType
 642     status;
 643
 644   MagickOffsetType
 645     scene;
 646
 647   PixelInfo
 648     pixel;
 649
 650   register const Quantum
 651     *p;
 652
 653   register ssize_t
 654     x;
 655
 656   ssize_t
 657     y;
 658
 659   /*
 660     Open output image file.
 661   */
 662   assert(image_info != (const ImageInfo *) NULL);
 663   assert(image_info->signature == MagickSignature);
 664   assert(image != (Image *) NULL);
 665   assert(image->signature == MagickSignature);
 666   if (image->debug != MagickFalse)
 667     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 668   status=OpenBlob(image_info,image,WriteBlobMode,exception);
 669   if (status == MagickFalse)
 670     return(status);
 671   scene=0;
 672   do
 673   {
 674     (void) CopyMagickString(colorspace,CommandOptionToMnemonic(
 675       MagickColorspaceOptions,(ssize_t) image->colorspace),MaxTextExtent);
 676     LocaleLower(colorspace);
 677     image->depth=GetImageQuantumDepth(image,MagickTrue);
 678     if (image->matte != MagickFalse)
 679       (void) ConcatenateMagickString(colorspace,"a",MaxTextExtent);
 680     (void) FormatLocaleString(buffer,MaxTextExtent,
 681       "# ImageMagick pixel enumeration: %.20g,%.20g,%.20g,%s\n",(double)
 682       image->columns,(double) image->rows,(double)
 683       GetQuantumRange(image->depth),colorspace);
 684     (void) WriteBlobString(image,buffer);
 685     GetPixelInfo(image,&pixel);
 686     for (y=0; y < (ssize_t) image->rows; y++)
 687     {
 688       p=GetVirtualPixels(image,0,y,image->columns,1,exception);
 689       if (p == (const Quantum *) NULL)
 690         break;
 691       for (x=0; x < (ssize_t) image->columns; x++)
 692       {
 693         (void) FormatLocaleString(buffer,MaxTextExtent,"%.20g,%.20g: ",(double)
 694           x,(double) y);
 695         (void) WriteBlobString(image,buffer);
 696         GetPixelInfoPixel(image,p,&pixel);
 697         (void) CopyMagickString(tuple,"(",MaxTextExtent);
 698         if (pixel.colorspace == GRAYColorspace)
 699           ConcatenateColorComponent(&pixel,GrayPixelChannel,X11Compliance,
 700             tuple);
 701         else
 702           {
 703             ConcatenateColorComponent(&pixel,RedPixelChannel,X11Compliance,
 704               tuple);
 705             (void) ConcatenateMagickString(tuple,",",MaxTextExtent);
 706             ConcatenateColorComponent(&pixel,GreenPixelChannel,X11Compliance,
 707               tuple);
 708             (void) ConcatenateMagickString(tuple,",",MaxTextExtent);
 709             ConcatenateColorComponent(&pixel,BluePixelChannel,X11Compliance,
 710               tuple);
 711           }
 712         if (pixel.colorspace == CMYKColorspace)
 713           {
 714             (void) ConcatenateMagickString(tuple,",",MaxTextExtent);
 715             ConcatenateColorComponent(&pixel,BlackPixelChannel,X11Compliance,
 716               tuple);
 717           }
 718         if (pixel.matte != MagickFalse)
 719           {
 720             (void) ConcatenateMagickString(tuple,",",MaxTextExtent);
 721             ConcatenateColorComponent(&pixel,AlphaPixelChannel,X11Compliance,
 722               tuple);
 723           }
 724         (void) ConcatenateMagickString(tuple,")",MaxTextExtent);
 725         (void) WriteBlobString(image,tuple);
 726         (void) WriteBlobString(image,"  ");
 727         GetColorTuple(&pixel,MagickTrue,tuple);
 728         (void) FormatLocaleString(buffer,MaxTextExtent,"%s",tuple);
 729         (void) WriteBlobString(image,buffer);
 730         (void) WriteBlobString(image,"  ");
 731         (void) QueryColorname(image,&pixel,SVGCompliance,tuple,exception);
 732         (void) WriteBlobString(image,tuple);
 733         (void) WriteBlobString(image,"\n");
 734         p+=GetPixelChannels(image);
 735       }
 736       status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
 737         image->rows);
 738       if (status == MagickFalse)
 739         break;
 740     }
 741     if (GetNextImageInList(image) == (Image *) NULL)
 742       break;
 743     image=SyncNextImageInList(image);
 744     status=SetImageProgress(image,SaveImagesTag,scene++,
 745       GetImageListLength(image));
 746     if (status == MagickFalse)
 747       break;
 748   } while (image_info->adjoin != MagickFalse);
 749   (void) CloseBlob(image);
 750   return(MagickTrue);
 751 }