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 1999-2009 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 "magick/studio.h"
  43 #include "magick/annotate.h"
  44 #include "magick/attribute.h"
  45 #include "magick/blob.h"
  46 #include "magick/blob-private.h"
  47 #include "magick/cache.h"
  48 #include "magick/color.h"
  49 #include "magick/color-private.h"
  50 #include "magick/colorspace.h"
  51 #include "magick/constitute.h"
  52 #include "magick/draw.h"
  53 #include "magick/exception.h"
  54 #include "magick/exception-private.h"
  55 #include "magick/geometry.h"
  56 #include "magick/image.h"
  57 #include "magick/image-private.h"
  58 #include "magick/list.h"
  59 #include "magick/magick.h"
  60 #include "magick/memory_.h"
  61 #include "magick/monitor.h"
  62 #include "magick/monitor-private.h"
  63 #include "magick/option.h"
  64 #include "magick/pixel-private.h"
  65 #include "magick/quantum-private.h"
  66 #include "magick/static.h"
  67 #include "magick/statistic.h"
  68 #include "magick/string_.h"
  69 #include "magick/module.h"
  70 \f
  71 /*
  72   Forward declarations.
  73 */
  74 static MagickBooleanType
  75   WriteTXTImage(const ImageInfo *,Image *);
  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   long
 174     offset;
 175
 176   MagickBooleanType
 177     status;
 178
 179   PointInfo
 180     delta;
 181
 182   RectangleInfo
 183     page;
 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->x_resolution == 0.0) || (image->y_resolution == 0.0))
 204     {
 205       GeometryInfo
 206         geometry_info;
 207
 208       MagickStatusType
 209         flags;
 210
 211       flags=ParseGeometry(PSDensityGeometry,&geometry_info);
 212       image->x_resolution=geometry_info.rho;
 213       image->y_resolution=geometry_info.sigma;
 214       if ((flags & SigmaValue) == 0)
 215         image->y_resolution=image->x_resolution;
 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=(unsigned long) (((page.width*image->x_resolution)/
 227     delta.x)+0.5);
 228   image->rows=(unsigned long) (((page.height*image->y_resolution)/delta.y)+0.5);
 229   image->page.x=0;
 230   image->page.y=0;
 231   texture=(Image *) NULL;
 232   if (image_info->texture != (char *) NULL)
 233     {
 234       ImageInfo
 235         *read_info;
 236
 237       read_info=CloneImageInfo(image_info);
 238       SetImageInfoBlob(read_info,(void *) NULL,0);
 239       (void) CopyMagickString(read_info->filename,image_info->texture,
 240         MaxTextExtent);
 241       texture=ReadImage(read_info,exception);
 242       read_info=DestroyImageInfo(read_info);
 243     }
 244   /*
 245     Annotate the text image.
 246   */
 247   (void) SetImageBackgroundColor(image);
 248   draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
 249   (void) CloneString(&draw_info->text,image_info->filename);
 250   (void) FormatMagickString(geometry,MaxTextExtent,"0x0%+ld%+ld",page.x,page.y);
 251   (void) CloneString(&draw_info->geometry,geometry);
 252   status=GetTypeMetrics(image,draw_info,&metrics);
 253   if (status == MagickFalse)
 254     ThrowReaderException(TypeError,"UnableToGetTypeMetrics");
 255   page.y=(long) (page.y+metrics.ascent+0.5);
 256   (void) FormatMagickString(geometry,MaxTextExtent,"0x0%+ld%+ld",page.x,page.y);
 257   (void) CloneString(&draw_info->geometry,geometry);
 258   (void) CopyMagickString(filename,image_info->filename,MaxTextExtent);
 259   if (*draw_info->text != '\0')
 260     *draw_info->text='\0';
 261   p=text;
 262   for (offset=2*page.y; p != (char *) NULL; )
 263   {
 264     /*
 265       Annotate image with text.
 266     */
 267     (void) ConcatenateString(&draw_info->text,text);
 268     (void) ConcatenateString(&draw_info->text,"\n");
 269     offset+=(long) (metrics.ascent-metrics.descent);
 270     if (image->previous == (Image *) NULL)
 271       {
 272         status=SetImageProgress(image,LoadImageTag,offset,image->rows);
 273         if (status == MagickFalse)
 274           break;
 275       }
 276     p=ReadBlobString(image,text);
 277     if ((offset < (long) image->rows) && (p != (char *) NULL))
 278       continue;
 279     if (texture != (Image *) NULL)
 280       {
 281         MagickProgressMonitor
 282           progress_monitor;
 283
 284         progress_monitor=SetImageProgressMonitor(image,
 285           (MagickProgressMonitor) NULL,image->client_data);
 286         (void) TextureImage(image,texture);
 287         (void) SetImageProgressMonitor(image,progress_monitor,
 288           image->client_data);
 289       }
 290     (void) AnnotateImage(image,draw_info);
 291     if (p == (char *) NULL)
 292       break;
 293     /*
 294       Page is full-- allocate next image structure.
 295     */
 296     *draw_info->text='\0';
 297     offset=2*page.y;
 298     AcquireNextImage(image_info,image);
 299     if (GetNextImageInList(image) == (Image *) NULL)
 300       {
 301         image=DestroyImageList(image);
 302         return((Image *) NULL);
 303       }
 304     image->next->columns=image->columns;
 305     image->next->rows=image->rows;
 306     image=SyncNextImageInList(image);
 307     (void) CopyMagickString(image->filename,filename,MaxTextExtent);
 308     (void) SetImageBackgroundColor(image);
 309     status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
 310       GetBlobSize(image));
 311     if (status == MagickFalse)
 312       break;
 313   }
 314   if (texture != (Image *) NULL)
 315     {
 316       MagickProgressMonitor
 317         progress_monitor;
 318
 319       progress_monitor=SetImageProgressMonitor(image,
 320         (MagickProgressMonitor) NULL,image->client_data);
 321       (void) TextureImage(image,texture);
 322       (void) SetImageProgressMonitor(image,progress_monitor,image->client_data);
 323     }
 324   (void) AnnotateImage(image,draw_info);
 325   if (texture != (Image *) NULL)
 326     texture=DestroyImage(texture);
 327   draw_info=DestroyDrawInfo(draw_info);
 328   (void) CloseBlob(image);
 329   return(GetFirstImageInList(image));
 330 }
 331 \f
 332 /*
 333 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 334 %                                                                             %
 335 %                                                                             %
 336 %                                                                             %
 337 %   R e a d T X T I m a g e                                                   %
 338 %                                                                             %
 339 %                                                                             %
 340 %                                                                             %
 341 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 342 %
 343 %  ReadTXTImage() reads a text file and returns it as an image.  It allocates
 344 %  the memory necessary for the new Image structure and returns a pointer to
 345 %  the new image.
 346 %
 347 %  The format of the ReadTXTImage method is:
 348 %
 349 %      Image *ReadTXTImage(const ImageInfo *image_info,ExceptionInfo *exception)
 350 %
 351 %  A description of each parameter follows:
 352 %
 353 %    o image_info: the image info.
 354 %
 355 %    o exception: return any errors or warnings in this structure.
 356 %
 357 */
 358 static Image *ReadTXTImage(const ImageInfo *image_info,ExceptionInfo *exception)
 359 {
 360   char
 361     colorspace[MaxTextExtent],
 362     text[MaxTextExtent];
 363
 364   Image
 365     *image;
 366
 367   IndexPacket
 368     *indexes;
 369
 370   long
 371     type,
 372     x,
 373     y;
 374
 375   LongPixelPacket
 376     pixel;
 377
 378   MagickBooleanType
 379     status;
 380
 381   QuantumAny
 382     range;
 383
 384   register long
 385     i;
 386
 387   register PixelPacket
 388     *q;
 389
 390   ssize_t
 391     count;
 392
 393   unsigned long
 394     depth,
 395     max_value;
 396
 397   /*
 398     Open image file.
 399   */
 400   assert(image_info != (const ImageInfo *) NULL);
 401   assert(image_info->signature == MagickSignature);
 402   if (image_info->debug != MagickFalse)
 403     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 404       image_info->filename);
 405   assert(exception != (ExceptionInfo *) NULL);
 406   assert(exception->signature == MagickSignature);
 407   image=AcquireImage(image_info);
 408   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 409   if (status == MagickFalse)
 410     {
 411       image=DestroyImageList(image);
 412       return((Image *) NULL);
 413     }
 414   (void) ResetMagickMemory(text,0,sizeof(text));
 415   (void) ReadBlobString(image,text);
 416   if (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) != 0)
 417     return(ReadTEXTImage(image_info,image,text,exception));
 418   *colorspace='\0';
 419   count=(ssize_t) sscanf(text+32,"%lu,%lu,%lu,%s",&image->columns,
 420     &image->rows,&max_value,colorspace);
 421   if (count != 4)
 422     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 423   for (depth=1; (GetQuantumRange(depth)+1) < max_value; depth++) ;
 424   image->depth=depth;
 425   LocaleLower(colorspace);
 426   i=(long) strlen(colorspace)-1;
 427   image->matte=MagickFalse;
 428   if ((i > 0) && (colorspace[i] == 'a'))
 429     {
 430       colorspace[i]='\0';
 431       image->matte=MagickTrue;
 432     }
 433   type=ParseMagickOption(MagickColorspaceOptions,MagickFalse,colorspace);
 434   if (type < 0)
 435     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
 436   image->colorspace=(ColorspaceType) type;
 437   (void) ResetMagickMemory(&pixel,0,sizeof(pixel));
 438   (void) SetImageBackgroundColor(image);
 439   range=GetQuantumRange(image->depth);
 440   while (ReadBlobString(image,text) != (char *) NULL)
 441   {
 442     if (image->colorspace == CMYKColorspace)
 443       {
 444         if (image->matte != MagickFalse)
 445           count=(ssize_t) sscanf(text,"%ld,%ld: (%lu,%lu,%lu,%lu,%lu",&x,&y,
 446             &pixel.red,&pixel.green,&pixel.blue,&pixel.index,&pixel.opacity);
 447         else
 448           count=(ssize_t) sscanf(text,"%ld,%ld: (%lu,%lu,%lu,%lu",&x,&y,
 449             &pixel.red,&pixel.green,&pixel.blue,&pixel.index);
 450       }
 451     else
 452       if (image->matte != MagickFalse)
 453         count=(ssize_t) sscanf(text,"%ld,%ld: (%lu,%lu,%lu,%lu",&x,&y,
 454           &pixel.red,&pixel.green,&pixel.blue,&pixel.opacity);
 455       else
 456         count=(ssize_t) sscanf(text,"%ld,%ld: (%lu,%lu,%lu",&x,&y,
 457           &pixel.red,&pixel.green,&pixel.blue);
 458     if (count < 5)
 459       continue;
 460     q=GetAuthenticPixels(image,x,y,1,1,exception);
 461     if (q == (PixelPacket *) NULL)
 462       continue;
 463     q->red=ScaleAnyToQuantum(pixel.red,range);
 464     q->green=ScaleAnyToQuantum(pixel.green,range);
 465     q->blue=ScaleAnyToQuantum(pixel.blue,range);
 466     if (image->colorspace == CMYKColorspace)
 467       {
 468         indexes=GetAuthenticIndexQueue(image);
 469         *indexes=ScaleAnyToQuantum(pixel.index,range);
 470       }
 471     if (image->matte != MagickFalse)
 472       q->opacity=(Quantum) (QuantumRange-ScaleAnyToQuantum(pixel.opacity,
 473         range));
 474     if (SyncAuthenticPixels(image,exception) == MagickFalse)
 475       break;
 476   }
 477   return(GetFirstImageInList(image));
 478 }
 479 \f
 480 /*
 481 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 482 %                                                                             %
 483 %                                                                             %
 484 %                                                                             %
 485 %   R e g i s t e r T X T I m a g e                                           %
 486 %                                                                             %
 487 %                                                                             %
 488 %                                                                             %
 489 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 490 %
 491 %  RegisterTXTImage() adds attributes for the TXT image format to the
 492 %  list of supported formats.  The attributes include the image format
 493 %  tag, a method to read and/or write the format, whether the format
 494 %  supports the saving of more than one frame to the same file or blob,
 495 %  whether the format supports native in-memory I/O, and a brief
 496 %  description of the format.
 497 %
 498 %  The format of the RegisterTXTImage method is:
 499 %
 500 %      unsigned long RegisterTXTImage(void)
 501 %
 502 */
 503 ModuleExport unsigned long RegisterTXTImage(void)
 504 {
 505   MagickInfo
 506     *entry;
 507
 508   entry=SetMagickInfo("TEXT");
 509   entry->decoder=(DecodeImageHandler *) ReadTXTImage;
 510   entry->encoder=(EncodeImageHandler *) WriteTXTImage;
 511   entry->raw=MagickTrue;
 512   entry->adjoin=MagickFalse;
 513   entry->endian_support=MagickTrue;
 514   entry->description=ConstantString("Text");
 515   entry->module=ConstantString("TXT");
 516   (void) RegisterMagickInfo(entry);
 517   entry=SetMagickInfo("TXT");
 518   entry->decoder=(DecodeImageHandler *) ReadTXTImage;
 519   entry->encoder=(EncodeImageHandler *) WriteTXTImage;
 520   entry->adjoin=MagickFalse;
 521   entry->description=ConstantString("Text");
 522   entry->magick=(IsImageFormatHandler *) IsTXT;
 523   entry->module=ConstantString("TXT");
 524   (void) RegisterMagickInfo(entry);
 525   return(MagickImageCoderSignature);
 526 }
 527 \f
 528 /*
 529 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 530 %                                                                             %
 531 %                                                                             %
 532 %                                                                             %
 533 %   U n r e g i s t e r T X T I m a g e                                       %
 534 %                                                                             %
 535 %                                                                             %
 536 %                                                                             %
 537 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 538 %
 539 %  UnregisterTXTImage() removes format registrations made by the
 540 %  TXT module from the list of supported format.
 541 %
 542 %  The format of the UnregisterTXTImage method is:
 543 %
 544 %      UnregisterTXTImage(void)
 545 %
 546 */
 547 ModuleExport void UnregisterTXTImage(void)
 548 {
 549   (void) UnregisterMagickInfo("TEXT");
 550   (void) UnregisterMagickInfo("TXT");
 551 }
 552 \f
 553 /*
 554 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 555 %                                                                             %
 556 %                                                                             %
 557 %                                                                             %
 558 %   W r i t e T X T I m a g e                                                 %
 559 %                                                                             %
 560 %                                                                             %
 561 %                                                                             %
 562 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 563 %
 564 %  WriteTXTImage writes the pixel values as text numbers.
 565 %
 566 %  The format of the WriteTXTImage method is:
 567 %
 568 %      MagickBooleanType WriteTXTImage(const ImageInfo *image_info,Image *image)
 569 %
 570 %  A description of each parameter follows.
 571 %
 572 %    o image_info: the image info.
 573 %
 574 %    o image:  The image.
 575 %
 576 */
 577 static MagickBooleanType WriteTXTImage(const ImageInfo *image_info,Image *image)
 578 {
 579   char
 580     buffer[MaxTextExtent],
 581     colorspace[MaxTextExtent],
 582     tuple[MaxTextExtent];
 583
 584   long
 585     y;
 586
 587   MagickBooleanType
 588     status;
 589
 590   MagickPixelPacket
 591     pixel;
 592
 593   register const IndexPacket
 594     *indexes;
 595
 596   register const PixelPacket
 597     *p;
 598
 599   register long
 600     x;
 601
 602   /*
 603     Open output image file.
 604   */
 605   assert(image_info != (const ImageInfo *) NULL);
 606   assert(image_info->signature == MagickSignature);
 607   assert(image != (Image *) NULL);
 608   assert(image->signature == MagickSignature);
 609   if (image->debug != MagickFalse)
 610     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 611   status=OpenBlob(image_info,image,WriteBlobMode,&image->exception);
 612   if (status == MagickFalse)
 613     return(status);
 614   (void) CopyMagickString(colorspace,MagickOptionToMnemonic(
 615     MagickColorspaceOptions,(long) image->colorspace),MaxTextExtent);
 616   LocaleLower(colorspace);
 617   image->depth=GetImageQuantumDepth(image,MagickTrue);
 618   if (image->matte != MagickFalse)
 619     (void) ConcatenateMagickString(colorspace,"a",MaxTextExtent);
 620   (void) FormatMagickString(buffer,MaxTextExtent,
 621     "# ImageMagick pixel enumeration: %lu,%lu,%lu,%s\n",image->columns,
 622     image->rows,(unsigned long) GetQuantumRange(image->depth),colorspace);
 623   (void) WriteBlobString(image,buffer);
 624   GetMagickPixelPacket(image,&pixel);
 625   for (y=0; y < (long) image->rows; y++)
 626   {
 627     p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
 628     if (p == (const PixelPacket *) NULL)
 629       break;
 630     indexes=GetVirtualIndexQueue(image);
 631     for (x=0; x < (long) image->columns; x++)
 632     {
 633       (void) FormatMagickString(buffer,MaxTextExtent,"%ld,%ld: ",x,y);
 634       (void) WriteBlobString(image,buffer);
 635       SetMagickPixelPacket(image,p,indexes+x,&pixel);
 636       (void) CopyMagickString(tuple,"(",MaxTextExtent);
 637       ConcatenateColorComponent(&pixel,RedChannel,X11Compliance,tuple);
 638       (void) ConcatenateMagickString(tuple,",",MaxTextExtent);
 639       ConcatenateColorComponent(&pixel,GreenChannel,X11Compliance,tuple);
 640       (void) ConcatenateMagickString(tuple,",",MaxTextExtent);
 641       ConcatenateColorComponent(&pixel,BlueChannel,X11Compliance,tuple);
 642       if (pixel.colorspace == CMYKColorspace)
 643         {
 644           (void) ConcatenateMagickString(tuple,",",MaxTextExtent);
 645           ConcatenateColorComponent(&pixel,IndexChannel,X11Compliance,tuple);
 646         }
 647       if (pixel.matte != MagickFalse)
 648         {
 649           (void) ConcatenateMagickString(tuple,",",MaxTextExtent);
 650           ConcatenateColorComponent(&pixel,AlphaChannel,X11Compliance,tuple);
 651         }
 652       (void) ConcatenateMagickString(tuple,")",MaxTextExtent);
 653       (void) WriteBlobString(image,tuple);
 654       (void) WriteBlobString(image,"  ");
 655       GetColorTuple(&pixel,MagickTrue,tuple);
 656       (void) FormatMagickString(buffer,MaxTextExtent,"%s",tuple);
 657       (void) WriteBlobString(image,buffer);
 658       (void) WriteBlobString(image,"  ");
 659       (void) QueryMagickColorname(image,&pixel,SVGCompliance,tuple,
 660         &image->exception);
 661       (void) WriteBlobString(image,tuple);
 662       (void) WriteBlobString(image,"\n");
 663       p++;
 664     }
 665     status=SetImageProgress(image,SaveImageTag,y,image->rows);
 666     if (status == MagickFalse)
 667       break;
 668   }
 669   (void) CloseBlob(image);
 670   return(MagickTrue);
 671 }