granicus.if.org Git - imagemagick/blob - MagickWand/display.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %               DDDD   IIIII  SSSSS  PPPP   L       AAA   Y   Y               %
   7 %               D   D    I    SS     P   P  L      A   A   Y Y                %
   8 %               D   D    I     SSS   PPPP   L      AAAAA    Y                 %
   9 %               D   D    I       SS  P      L      A   A    Y                 %
  10 %               DDDD   IIIII  SSSSS  P      LLLLL  A   A    Y                 %
  11 %                                                                             %
  12 %                                                                             %
  13 %              Methods to Interactively Display and Edit an 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 %  Use the display program to display an image or image sequence on any X
  37 %  server.
  38 %
  39 */
  40 \f
  41 /*
  42   Include declarations.
  43 */
  44 #include "MagickWand/studio.h"
  45 #include "MagickWand/MagickWand.h"
  46 #include "MagickWand/mogrify-private.h"
  47 #include "MagickCore/display-private.h"
  48 #include "MagickCore/nt-base-private.h"
  49 #include "MagickCore/string-private.h"
  50 #include "MagickCore/xwindow-private.h"
  51 \f
  52 /*
  53 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  54 %                                                                             %
  55 %                                                                             %
  56 %                                                                             %
  57 +   D i s p l a y I m a g e C o m m a n d                                     %
  58 %                                                                             %
  59 %                                                                             %
  60 %                                                                             %
  61 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  62 %
  63 %  DisplayImageCommand() displays a sequence of images on any workstation
  64 %  display running an X server.  Display first determines the hardware
  65 %  capabilities of the workstation. If the number of unique colors in an image
  66 %  is less than or equal to the number the workstation can support, the image
  67 %  is displayed in an X window. Otherwise the number of colors in the image is
  68 %  first reduced to match the color resolution of the workstation before it is
  69 %  displayed.
  70 %
  71 %  This means that a continuous-tone 24 bits/pixel image can display on a 8
  72 %  bit pseudo-color device or monochrome device. In most instances the reduced
  73 %  color image closely resembles the original. Alternatively, a monochrome or
  74 %  pseudo-color image sequence can display on a continuous-tone 24 bits/pixels
  75 %  device.
  76 %
  77 %  The format of the DisplayImageCommand method is:
  78 %
  79 %      MagickBooleanType DisplayImageCommand(ImageInfo *image_info,int argc,
  80 %        char **argv,char **metadata,ExceptionInfo *exception)
  81 %
  82 %  A description of each parameter follows:
  83 %
  84 %    o image_info: the image info.
  85 %
  86 %    o argc: the number of elements in the argument vector.
  87 %
  88 %    o argv: A text array containing the command line arguments.
  89 %
  90 %    o metadata: any metadata is returned here.
  91 %
  92 %    o exception: return any errors or warnings in this structure.
  93 %
  94 */
  95
  96 static MagickBooleanType DisplayUsage(void)
  97 {
  98   const char
  99     **p;
 100
 101   static const char
 102     *buttons[]=
 103     {
 104       "1    press to map or unmap the Command widget",
 105       "2    press and drag to magnify a region of an image",
 106       "3    press to load an image from a visual image directory",
 107       (char *) NULL
 108     },
 109     *miscellaneous[]=
 110     {
 111       "-debug events        display copious debugging information",
 112       "-help                print program options",
 113       "-list type           print a list of supported option arguments",
 114       "-log format          format of debugging information",
 115       "-version             print version information",
 116       (char *) NULL
 117     },
 118     *operators[]=
 119     {
 120       "-auto-orient         automagically orient image",
 121       "-border geometry     surround image with a border of color",
 122       "-clip                clip along the first path from the 8BIM profile",
 123       "-clip-path id        clip along a named path from the 8BIM profile",
 124       "-colors value        preferred number of colors in the image",
 125       "-contrast            enhance or reduce the image contrast",
 126       "-crop geometry       preferred size and location of the cropped image",
 127       "-decipher filename   convert cipher pixels to plain pixels",
 128       "-deskew threshold    straighten an image",
 129       "-despeckle           reduce the speckles within an image",
 130       "-edge factor         apply a filter to detect edges in the image",
 131       "-enhance             apply a digital filter to enhance a noisy image",
 132       "-equalize            perform histogram equalization to an image",
 133       "-extract geometry    extract area from image",
 134       "-flip                flip image in the vertical direction",
 135       "-flop                flop image in the horizontal direction",
 136       "-frame geometry      surround image with an ornamental border",
 137       "-fuzz distance       colors within this distance are considered equal",
 138       "-gamma value         level of gamma correction",
 139       "-monochrome          transform image to black and white",
 140       "-negate              replace every pixel with its complementary color",
 141       "-normalize           transform image to span the full range of colors",
 142       "-raise value         lighten/darken image edges to create a 3-D effect",
 143       "-resample geometry   change the resolution of an image",
 144       "-resize geometry     resize the image",
 145       "-roll geometry       roll an image vertically or horizontally",
 146       "-rotate degrees      apply Paeth rotation to the image",
 147       "-sample geometry     scale image with pixel sampling",
 148       "-segment value       segment an image",
 149       "-sharpen geometry    sharpen the image",
 150       "-strip               strip image of all profiles and comments",
 151       "-threshold value     threshold the image",
 152       "-thumbnail geometry  create a thumbnail of the image",
 153       "-trim                trim image edges",
 154       (char *) NULL
 155     },
 156     *settings[]=
 157     {
 158       "-alpha option        on, activate, off, deactivate, set, opaque, copy",
 159       "                     transparent, extract, background, or shape",
 160       "-antialias           remove pixel-aliasing",
 161       "-authenticate password",
 162       "                     decipher image with this password",
 163       "-backdrop            display image centered on a backdrop",
 164       "-channel type        apply option to select image channels",
 165       "-colormap type       Shared or Private",
 166       "-colorspace type     alternate image colorspace",
 167       "-comment string      annotate image with comment",
 168       "-compress type       type of pixel compression when writing the image",
 169       "-define format:option",
 170       "                     define one or more image format options",
 171       "-delay value         display the next image after pausing",
 172       "-density geometry    horizontal and vertical density of the image",
 173       "-depth value         image depth",
 174       "-display server      display image to this X server",
 175       "-dispose method      layer disposal method",
 176       "-dither method       apply error diffusion to image",
 177       "-endian type         endianness (MSB or LSB) of the image",
 178       "-filter type         use this filter when resizing an image",
 179       "-format string     output formatted image characteristics",
 180       "-geometry geometry   preferred size and location of the Image window",
 181       "-gravity type        horizontal and vertical backdrop placement",
 182       "-identify            identify the format and characteristics of the image",
 183       "-immutable           displayed image cannot be modified",
 184       "-interlace type      type of image interlacing scheme",
 185       "-interpolate method  pixel color interpolation method",
 186       "-label string        assign a label to an image",
 187       "-limit type value    pixel cache resource limit",
 188       "-loop iterations     loop images then exit",
 189       "-map type            display image using this Standard Colormap",
 190       "-monitor             monitor progress",
 191       "-page geometry       size and location of an image canvas",
 192       "-profile filename    add, delete, or apply an image profile",
 193       "-quality value       JPEG/MIFF/PNG compression level",
 194       "-quantize colorspace reduce colors in this colorspace",
 195       "-quiet               suppress all warning messages",
 196       "-regard-warnings     pay attention to warning messages",
 197       "-remote command      execute a command in an remote display process",
 198       "-repage geometry     size and location of an image canvas (operator)",
 199       "-respect-parentheses settings remain in effect until parenthesis boundary",
 200       "-sampling-factor geometry",
 201       "                     horizontal and vertical sampling factor",
 202       "-seed value          seed a new sequence of pseudo-random numbers",
 203       "-set property value  set an image property",
 204       "-size geometry       width and height of image",
 205       "-texture filename    name of texture to tile onto the image background",
 206       "-transparent-color color",
 207       "                     transparent color",
 208       "-treedepth value     color tree depth",
 209       "-update seconds      detect when image file is modified and redisplay",
 210       "-verbose             print detailed information about the image",
 211       "-visual type         display image using this visual type",
 212       "-virtual-pixel method",
 213       "                     virtual pixel access method",
 214       "-window id           display image to background of this window",
 215       "-window-group id     exit program when this window id is destroyed",
 216       "-write filename      write image to a file",
 217       (char *) NULL
 218     },
 219     *sequence_operators[]=
 220     {
 221       "-coalesce            merge a sequence of images",
 222       "-flatten             flatten a sequence of images",
 223       (char *) NULL
 224     };
 225
 226   (void) printf("Version: %s\n",GetMagickVersion((size_t *) NULL));
 227   (void) printf("Copyright: %s\n",GetMagickCopyright());
 228   (void) printf("Features: %s\n\n",GetMagickFeatures());
 229   (void) printf("Usage: %s [options ...] file [ [options ...] file ...]\n",
 230     GetClientName());
 231   (void) printf("\nImage Settings:\n");
 232   for (p=settings; *p != (char *) NULL; p++)
 233     (void) printf("  %s\n",*p);
 234   (void) printf("\nImage Operators:\n");
 235   for (p=operators; *p != (char *) NULL; p++)
 236     (void) printf("  %s\n",*p);
 237   (void) printf("\nImage Sequence Operators:\n");
 238   for (p=sequence_operators; *p != (char *) NULL; p++)
 239     (void) printf("  %s\n",*p);
 240   (void) printf("\nMiscellaneous Options:\n");
 241   for (p=miscellaneous; *p != (char *) NULL; p++)
 242     (void) printf("  %s\n",*p);
 243   (void) printf(
 244     "\nIn addition to those listed above, you can specify these standard X\n");
 245   (void) printf(
 246     "resources as command line options:  -background, -bordercolor,\n");
 247   (void) printf(
 248     "-borderwidth, -font, -foreground, -iconGeometry, -iconic, -mattecolor,\n");
 249   (void) printf("-name, -shared-memory, -usePixmap, or -title.\n");
 250   (void) printf(
 251     "\nBy default, the image format of `file' is determined by its magic\n");
 252   (void) printf(
 253     "number.  To specify a particular image format, precede the filename\n");
 254   (void) printf(
 255     "with an image format name and a colon (i.e. ps:image) or specify the\n");
 256   (void) printf(
 257     "image type as the filename suffix (i.e. image.ps).  Specify 'file' as\n");
 258   (void) printf("'-' for standard input or output.\n");
 259   (void) printf("\nButtons: \n");
 260   for (p=buttons; *p != (char *) NULL; p++)
 261     (void) printf("  %s\n",*p);
 262   return(MagickFalse);
 263 }
 264
 265 WandExport MagickBooleanType DisplayImageCommand(ImageInfo *image_info,
 266   int argc,char **argv,char **wand_unused(metadata),ExceptionInfo *exception)
 267 {
 268 #if defined(MAGICKCORE_X11_DELEGATE)
 269 #define DestroyDisplay() \
 270 { \
 271   if ((state & ExitState) == 0) \
 272     DestroyXResources(); \
 273   if (display != (Display *) NULL) \
 274     { \
 275       XCloseDisplay(display); \
 276       display=(Display *) NULL; \
 277     } \
 278   XDestroyResourceInfo(&resource_info); \
 279   DestroyImageStack(); \
 280   if (image_marker != (size_t *) NULL) \
 281     image_marker=(size_t *) RelinquishMagickMemory(image_marker); \
 282   for (i=0; i < (ssize_t) argc; i++) \
 283     argv[i]=DestroyString(argv[i]); \
 284   argv=(char **) RelinquishMagickMemory(argv); \
 285 }
 286 #define ThrowDisplayException(asperity,tag,option) \
 287 { \
 288   (void) ThrowMagickException(exception,GetMagickModule(),asperity,tag,"`%s'", \
 289     option); \
 290   DestroyDisplay(); \
 291   return(MagickFalse); \
 292 }
 293 #define ThrowDisplayInvalidArgumentException(option,argument) \
 294 { \
 295   (void) ThrowMagickException(exception,GetMagickModule(),OptionError, \
 296     "InvalidArgument","`%s': %s",option,argument); \
 297   DestroyDisplay(); \
 298   return(MagickFalse); \
 299 }
 300
 301   char
 302     *resource_value,
 303     *server_name;
 304
 305   const char
 306     *option;
 307
 308   Display
 309     *display;
 310
 311   Image
 312     *image;
 313
 314   ImageStack
 315     image_stack[MaxImageStackDepth+1];
 316
 317   MagickBooleanType
 318     fire,
 319     pend,
 320     respect_parenthesis;
 321
 322   MagickStatusType
 323     status;
 324
 325   QuantizeInfo
 326     *quantize_info;
 327
 328   register ssize_t
 329     i;
 330
 331   size_t
 332     *image_marker,
 333     iterations,
 334     last_image,
 335     state;
 336
 337   ssize_t
 338     image_number,
 339     iteration,
 340     j,
 341     k,
 342     l;
 343
 344   XResourceInfo
 345     resource_info;
 346
 347   XrmDatabase
 348     resource_database;
 349
 350   /*
 351     Set defaults.
 352   */
 353   assert(image_info != (ImageInfo *) NULL);
 354   assert(image_info->signature == MagickSignature);
 355   if (image_info->debug != MagickFalse)
 356     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
 357   assert(exception != (ExceptionInfo *) NULL);
 358   if (argc == 2)
 359     {
 360       option=argv[1];
 361       if ((LocaleCompare("version",option+1) == 0) ||
 362           (LocaleCompare("-version",option+1) == 0))
 363         {
 364           (void) FormatLocaleFile(stdout,"Version: %s\n",
 365             GetMagickVersion((size_t *) NULL));
 366           (void) FormatLocaleFile(stdout,"Copyright: %s\n",
 367             GetMagickCopyright());
 368           (void) FormatLocaleFile(stdout,"Features: %s\n\n",
 369             GetMagickFeatures());
 370           return(MagickFalse);
 371         }
 372     }
 373   SetNotifyHandlers;
 374   display=(Display *) NULL;
 375   j=1;
 376   k=0;
 377   image_marker=(size_t *) NULL;
 378   image_number=0;
 379   last_image=0;
 380   NewImageStack();
 381   option=(char *) NULL;
 382   pend=MagickFalse;
 383   respect_parenthesis=MagickFalse;
 384   resource_database=(XrmDatabase) NULL;
 385   (void) ResetMagickMemory(&resource_info,0,sizeof(resource_info));
 386   server_name=(char *) NULL;
 387   state=0;
 388   status=MagickTrue;
 389   ReadCommandlLine(argc,&argv);
 390   status=ExpandFilenames(&argc,&argv);
 391   if (status == MagickFalse)
 392     ThrowDisplayException(ResourceLimitError,"MemoryAllocationFailed",
 393       GetExceptionMessage(errno));
 394   image_marker=(size_t *) AcquireQuantumMemory((size_t) argc+1UL,
 395     sizeof(*image_marker));
 396   if (image_marker == (size_t *) NULL)
 397     ThrowDisplayException(ResourceLimitError,"MemoryAllocationFailed",
 398       GetExceptionMessage(errno));
 399   for (i=0; i <= (ssize_t) argc; i++)
 400     image_marker[i]=(size_t) argc;
 401   /*
 402     Check for server name specified on the command line.
 403   */
 404   for (i=1; i < (ssize_t) argc; i++)
 405   {
 406     /*
 407       Check command line for server name.
 408     */
 409     option=argv[i];
 410     if (LocaleCompare("display",option+1) == 0)
 411       {
 412         /*
 413           User specified server name.
 414         */
 415         i++;
 416         if (i == (ssize_t) argc)
 417           ThrowDisplayException(OptionError,"MissingArgument",option);
 418         server_name=argv[i];
 419       }
 420     if ((LocaleCompare("help",option+1) == 0) ||
 421         (LocaleCompare("-help",option+1) == 0))
 422       return(DisplayUsage());
 423   }
 424   /*
 425     Get user defaults from X resource database.
 426   */
 427   display=XOpenDisplay(server_name);
 428   if (display == (Display *) NULL)
 429     ThrowDisplayException(XServerError,"UnableToOpenXServer",
 430       XDisplayName(server_name));
 431   (void) XSetErrorHandler(XError);
 432   resource_database=XGetResourceDatabase(display,GetClientName());
 433   XGetResourceInfo(image_info,resource_database,GetClientName(),
 434     &resource_info);
 435   quantize_info=resource_info.quantize_info;
 436   image_info->density=XGetResourceInstance(resource_database,GetClientName(),
 437     "density",(char *) NULL);
 438   if (image_info->density == (char *) NULL)
 439     image_info->density=XGetScreenDensity(display);
 440   resource_value=XGetResourceInstance(resource_database,GetClientName(),
 441     "interlace","none");
 442   image_info->interlace=(InterlaceType)
 443     ParseCommandOption(MagickInterlaceOptions,MagickFalse,resource_value);
 444   image_info->page=XGetResourceInstance(resource_database,GetClientName(),
 445     "pageGeometry",(char *) NULL);
 446   resource_value=XGetResourceInstance(resource_database,GetClientName(),
 447     "quality","75");
 448   image_info->quality=StringToUnsignedLong(resource_value);
 449   resource_value=XGetResourceInstance(resource_database,GetClientName(),
 450     "verbose","False");
 451   image_info->verbose=IsMagickTrue(resource_value);
 452   resource_value=XGetResourceInstance(resource_database,GetClientName(),
 453     "dither","True");
 454   quantize_info->dither=IsMagickTrue(resource_value);
 455   /*
 456     Parse command line.
 457   */
 458   iteration=0;
 459   for (i=1; ((i <= (ssize_t) argc) && ((state & ExitState) == 0)); i++)
 460   {
 461     if (i < (ssize_t) argc)
 462       option=argv[i];
 463     else
 464       if (image != (Image *) NULL)
 465         break;
 466       else
 467         if (isatty(STDIN_FILENO) != MagickFalse)
 468           option="logo:";
 469         else
 470           {
 471             int
 472               c;
 473
 474             c=getc(stdin);
 475             if (c == EOF)
 476               break;
 477             else
 478               {
 479                 c=ungetc(c,stdin);
 480                 option="-";
 481               }
 482           }
 483     if (LocaleCompare(option,"(") == 0)
 484       {
 485         FireImageStack(MagickFalse,MagickTrue,pend);
 486         if (k == MaxImageStackDepth)
 487           ThrowDisplayException(OptionError,"ParenthesisNestedTooDeeply",
 488             option);
 489         PushImageStack();
 490         continue;
 491       }
 492     if (LocaleCompare(option,")") == 0)
 493       {
 494         FireImageStack(MagickFalse,MagickTrue,MagickTrue);
 495         if (k == 0)
 496           ThrowDisplayException(OptionError,"UnableToParseExpression",option);
 497         PopImageStack();
 498         continue;
 499       }
 500     if (IsCommandOption(option) == MagickFalse)
 501       {
 502         const char
 503           *filename;
 504
 505         Image
 506           *display_image,
 507           *images;
 508
 509         /*
 510           Option is a file name.
 511         */
 512         FireImageStack(MagickFalse,MagickFalse,pend);
 513         filename=option;
 514         if ((LocaleCompare(filename,"--") == 0) && (i < (ssize_t) (argc-1)))
 515           {
 516             option=argv[++i];
 517             filename=option;
 518           }
 519         (void) CopyMagickString(image_info->filename,filename,MaxTextExtent);
 520         images=ReadImage(image_info,exception);
 521         CatchException(exception);
 522         status&=(images != (Image *) NULL) &&
 523           (exception->severity < ErrorException);
 524         if (images == (Image *) NULL)
 525           continue;
 526         AppendImageStack(images);
 527         FinalizeImageSettings(image_info,image,MagickFalse);
 528         iterations=0;
 529         if (i == (ssize_t) (argc-1))
 530           iterations=image->iterations;
 531         display_image=CloneImageList(image,exception);
 532         if (display_image == (Image *) NULL)
 533           ThrowDisplayException(ResourceLimitError,"MemoryAllocationFailed",
 534             GetExceptionMessage(errno));
 535         do
 536         {
 537           /*
 538             Transmogrify image as defined by the image processing options.
 539           */
 540           resource_info.quantum=1;
 541           if (resource_info.window_id != (char *) NULL)
 542             {
 543               /*
 544                 Display image to a specified X window.
 545               */
 546               status=XDisplayBackgroundImage(display,&resource_info,
 547                 display_image,exception);
 548               if (status != MagickFalse)
 549                 {
 550                   state|=RetainColorsState;
 551                   status=MagickFalse;
 552                 }
 553             }
 554           else
 555             do
 556             {
 557               Image
 558                 *nexus;
 559
 560               /*
 561                 Display image to X server.
 562               */
 563               if (resource_info.delay != 1)
 564                 display_image->delay=resource_info.delay;
 565               nexus=XDisplayImage(display,&resource_info,argv,argc,
 566                 &display_image,&state,exception);
 567               status&=nexus != (Image *) NULL;
 568               if (nexus == (Image *) NULL)
 569                 break;
 570               while ((nexus != (Image *) NULL) && ((state & ExitState) == 0))
 571               {
 572                 Image
 573                   *next;
 574
 575                 if (nexus->montage != (char *) NULL)
 576                   {
 577                     /*
 578                       User selected a visual directory image (montage).
 579                     */
 580                     display_image=nexus;
 581                     break;
 582                   }
 583                 next=XDisplayImage(display,&resource_info,argv,argc,&nexus,
 584                   &state,exception);
 585                 if ((next == (Image *) NULL) &&
 586                     (GetNextImageInList(nexus) != (Image *) NULL))
 587                   {
 588                     display_image=GetNextImageInList(nexus);
 589                     nexus=NewImageList();
 590                   }
 591                 else
 592                   {
 593                     if (nexus != display_image)
 594                       nexus=DestroyImageList(nexus);
 595                     nexus=next;
 596                   }
 597               }
 598             } while ((state & ExitState) == 0);
 599           if (resource_info.write_filename != (char *) NULL)
 600             {
 601               /*
 602                 Write image.
 603               */
 604               (void) CopyMagickString(display_image->filename,
 605                 resource_info.write_filename,MaxTextExtent);
 606               (void) SetImageInfo(image_info,1,exception);
 607               status&=WriteImage(image_info,display_image,exception);
 608             }
 609           /*
 610             Proceed to next/previous image.
 611           */
 612           if ((state & FormerImageState) != 0)
 613             for (l=0; l < (ssize_t) resource_info.quantum; l++)
 614             {
 615               display_image=GetPreviousImageInList(display_image);
 616               if (display_image == (Image *) NULL)
 617                 break;
 618             }
 619           else
 620             for (l=0; l < (ssize_t) resource_info.quantum; l++)
 621             {
 622               display_image=GetNextImageInList(display_image);
 623               if (display_image == (Image *) NULL)
 624                 break;
 625             }
 626         } while ((display_image != (Image *) NULL) && ((state & ExitState) == 0));
 627         /*
 628           Free image resources.
 629         */
 630         display_image=DestroyImageList(display_image);
 631         if ((state & FormerImageState) == 0)
 632           {
 633             last_image=(size_t) image_number;
 634             image_marker[i]=(size_t) image_number++;
 635           }
 636         else
 637           {
 638             /*
 639               Proceed to previous image.
 640             */
 641             for (i--; i > 0; i--)
 642               if (image_marker[i] == (size_t) (image_number-2))
 643                 break;
 644             image_number--;
 645           }
 646         if ((i == (ssize_t) (argc-1)) && ((state & ExitState) == 0))
 647           i=0;
 648         if ((state & ExitState) != 0)
 649           break;
 650         /*
 651           Determine if we should proceed to the first image.
 652         */
 653         if (image_number < 0)
 654           {
 655             if ((state & FormerImageState) != 0)
 656               {
 657
 658                 for (i=1; i < (ssize_t) (argc-2); i++)
 659                   if (last_image == image_marker[i])
 660                     break;
 661                 image_number=(ssize_t) image_marker[i]+1;
 662               }
 663             continue;
 664           }
 665         if (resource_info.window_id != (char *) NULL)
 666           state|=ExitState;
 667         if ((iterations != 0) && (++iteration == (ssize_t) iterations))
 668           state|=ExitState;
 669         if (LocaleCompare(filename,"-") == 0)
 670           state|=ExitState;
 671         RemoveAllImageStack();
 672         continue;
 673       }
 674     pend=image != (Image *) NULL ? MagickTrue : MagickFalse;
 675     switch (*(option+1))
 676     {
 677       case 'a':
 678       {
 679         if (LocaleCompare("alpha",option+1) == 0)
 680           {
 681             ssize_t
 682               type;
 683
 684             if (*option == '+')
 685               break;
 686             i++;
 687             if (i == (ssize_t) argc)
 688               ThrowDisplayException(OptionError,"MissingArgument",option);
 689             type=ParseCommandOption(MagickAlphaOptions,MagickFalse,argv[i]);
 690             if (type < 0)
 691               ThrowDisplayException(OptionError,"UnrecognizedAlphaChannelType",
 692                 argv[i]);
 693             break;
 694           }
 695         if (LocaleCompare("antialias",option+1) == 0)
 696           break;
 697         if (LocaleCompare("authenticate",option+1) == 0)
 698           {
 699             if (*option == '+')
 700               break;
 701             i++;
 702             if (i == (ssize_t) argc)
 703               ThrowDisplayException(OptionError,"MissingArgument",option);
 704             break;
 705           }
 706         if (LocaleCompare("auto-orient",option+1) == 0)
 707           break;
 708         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
 709       }
 710       case 'b':
 711       {
 712         if (LocaleCompare("backdrop",option+1) == 0)
 713           {
 714             resource_info.backdrop=(*option == '-') ? MagickTrue : MagickFalse;
 715             break;
 716           }
 717         if (LocaleCompare("background",option+1) == 0)
 718           {
 719             if (*option == '+')
 720               break;
 721             i++;
 722             if (i == (ssize_t) argc)
 723               ThrowDisplayException(OptionError,"MissingArgument",option);
 724             resource_info.background_color=argv[i];
 725             break;
 726           }
 727         if (LocaleCompare("border",option+1) == 0)
 728           {
 729             if (*option == '+')
 730               break;
 731             i++;
 732             if (i == (ssize_t) argc)
 733               ThrowDisplayException(OptionError,"MissingArgument",option);
 734             if (IsGeometry(argv[i]) == MagickFalse)
 735               ThrowDisplayInvalidArgumentException(option,argv[i]);
 736             break;
 737           }
 738         if (LocaleCompare("bordercolor",option+1) == 0)
 739           {
 740             if (*option == '+')
 741               break;
 742             i++;
 743             if (i == (ssize_t) argc)
 744               ThrowDisplayException(OptionError,"MissingArgument",option);
 745             resource_info.border_color=argv[i];
 746             break;
 747           }
 748         if (LocaleCompare("borderwidth",option+1) == 0)
 749           {
 750             resource_info.border_width=0;
 751             if (*option == '+')
 752               break;
 753             i++;
 754             if (i == (ssize_t) argc)
 755               ThrowDisplayException(OptionError,"MissingArgument",option);
 756             if (IsGeometry(argv[i]) == MagickFalse)
 757               ThrowDisplayInvalidArgumentException(option,argv[i]);
 758             resource_info.border_width=(unsigned int)
 759               StringToUnsignedLong(argv[i]);
 760             break;
 761           }
 762         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
 763       }
 764       case 'c':
 765       {
 766         if (LocaleCompare("cache",option+1) == 0)
 767           {
 768             if (*option == '+')
 769               break;
 770             i++;
 771             if (i == (ssize_t) argc)
 772               ThrowDisplayException(OptionError,"MissingArgument",option);
 773             if (IsGeometry(argv[i]) == MagickFalse)
 774               ThrowDisplayInvalidArgumentException(option,argv[i]);
 775             break;
 776           }
 777         if (LocaleCompare("channel",option+1) == 0)
 778           {
 779             ssize_t
 780               channel;
 781
 782             if (*option == '+')
 783               break;
 784             i++;
 785             if (i == (ssize_t) (argc-1))
 786               ThrowDisplayException(OptionError,"MissingArgument",option);
 787             channel=ParseChannelOption(argv[i]);
 788             if (channel < 0)
 789               ThrowDisplayException(OptionError,"UnrecognizedChannelType",
 790                 argv[i]);
 791             break;
 792           }
 793         if (LocaleCompare("clip",option+1) == 0)
 794           break;
 795         if (LocaleCompare("clip-path",option+1) == 0)
 796           {
 797             i++;
 798             if (i == (ssize_t) argc)
 799               ThrowDisplayException(OptionError,"MissingArgument",option);
 800             break;
 801           }
 802         if (LocaleCompare("coalesce",option+1) == 0)
 803           break;
 804         if (LocaleCompare("colormap",option+1) == 0)
 805           {
 806             resource_info.colormap=PrivateColormap;
 807             if (*option == '+')
 808               break;
 809             i++;
 810             if (i == (ssize_t) argc)
 811               ThrowDisplayException(OptionError,"MissingArgument",option);
 812             resource_info.colormap=UndefinedColormap;
 813             if (LocaleCompare("private",argv[i]) == 0)
 814               resource_info.colormap=PrivateColormap;
 815             if (LocaleCompare("shared",argv[i]) == 0)
 816               resource_info.colormap=SharedColormap;
 817             if (resource_info.colormap == UndefinedColormap)
 818               ThrowDisplayException(OptionError,"UnrecognizedColormapType",
 819                 argv[i]);
 820             break;
 821           }
 822         if (LocaleCompare("colors",option+1) == 0)
 823           {
 824             quantize_info->number_colors=0;
 825             if (*option == '+')
 826               break;
 827             i++;
 828             if (i == (ssize_t) argc)
 829               ThrowDisplayException(OptionError,"MissingArgument",option);
 830             if (IsGeometry(argv[i]) == MagickFalse)
 831               ThrowDisplayInvalidArgumentException(option,argv[i]);
 832             quantize_info->number_colors=StringToUnsignedLong(argv[i]);
 833             break;
 834           }
 835         if (LocaleCompare("colorspace",option+1) == 0)
 836           {
 837             ssize_t
 838               colorspace;
 839
 840             if (*option == '+')
 841               break;
 842             i++;
 843             if (i == (ssize_t) argc)
 844               ThrowDisplayException(OptionError,"MissingArgument",option);
 845             colorspace=ParseCommandOption(MagickColorspaceOptions,
 846               MagickFalse,argv[i]);
 847             if (colorspace < 0)
 848               ThrowDisplayException(OptionError,"UnrecognizedColorspace",
 849                 argv[i]);
 850             break;
 851           }
 852         if (LocaleCompare("comment",option+1) == 0)
 853           {
 854             if (*option == '+')
 855               break;
 856             i++;
 857             if (i == (ssize_t) argc)
 858               ThrowDisplayException(OptionError,"MissingArgument",option);
 859             break;
 860           }
 861         if (LocaleCompare("compress",option+1) == 0)
 862           {
 863             ssize_t
 864               compress;
 865
 866             if (*option == '+')
 867               break;
 868             i++;
 869             if (i == (ssize_t) argc)
 870               ThrowDisplayException(OptionError,"MissingArgument",option);
 871             compress=ParseCommandOption(MagickCompressOptions,MagickFalse,
 872               argv[i]);
 873             if (compress < 0)
 874               ThrowDisplayException(OptionError,"UnrecognizedImageCompression",
 875                 argv[i]);
 876             break;
 877           }
 878         if (LocaleCompare("concurrent",option+1) == 0)
 879           break;
 880         if (LocaleCompare("contrast",option+1) == 0)
 881           break;
 882         if (LocaleCompare("crop",option+1) == 0)
 883           {
 884             if (*option == '+')
 885               break;
 886             i++;
 887             if (i == (ssize_t) argc)
 888               ThrowDisplayException(OptionError,"MissingArgument",option);
 889             if (IsGeometry(argv[i]) == MagickFalse)
 890               ThrowDisplayInvalidArgumentException(option,argv[i]);
 891             break;
 892           }
 893         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
 894       }
 895       case 'd':
 896       {
 897         if (LocaleCompare("debug",option+1) == 0)
 898           {
 899             ssize_t
 900               event;
 901
 902             if (*option == '+')
 903               break;
 904             i++;
 905             if (i == (ssize_t) argc)
 906               ThrowDisplayException(OptionError,"MissingArgument",option);
 907             event=ParseCommandOption(MagickLogEventOptions,MagickFalse,argv[i]);
 908             if (event < 0)
 909               ThrowDisplayException(OptionError,"UnrecognizedEventType",
 910                 argv[i]);
 911             (void) SetLogEventMask(argv[i]);
 912             break;
 913           }
 914         if (LocaleCompare("decipher",option+1) == 0)
 915           {
 916             if (*option == '+')
 917               break;
 918             i++;
 919             if (i == (ssize_t) (argc-1))
 920               ThrowDisplayException(OptionError,"MissingArgument",option);
 921             break;
 922           }
 923         if (LocaleCompare("define",option+1) == 0)
 924           {
 925             i++;
 926             if (i == (ssize_t) argc)
 927               ThrowDisplayException(OptionError,"MissingArgument",option);
 928             if (*option == '+')
 929               {
 930                 const char
 931                   *define;
 932
 933                 define=GetImageOption(image_info,argv[i]);
 934                 if (define == (const char *) NULL)
 935                   ThrowDisplayException(OptionError,"NoSuchOption",argv[i]);
 936                 break;
 937               }
 938             break;
 939           }
 940         if (LocaleCompare("delay",option+1) == 0)
 941           {
 942             if (*option == '+')
 943               break;
 944             i++;
 945             if (i == (ssize_t) argc)
 946               ThrowDisplayException(OptionError,"MissingArgument",option);
 947             if (IsGeometry(argv[i]) == MagickFalse)
 948               ThrowDisplayInvalidArgumentException(option,argv[i]);
 949             break;
 950           }
 951         if (LocaleCompare("density",option+1) == 0)
 952           {
 953             if (*option == '+')
 954               break;
 955             i++;
 956             if (i == (ssize_t) argc)
 957               ThrowDisplayException(OptionError,"MissingArgument",option);
 958             if (IsGeometry(argv[i]) == MagickFalse)
 959               ThrowDisplayInvalidArgumentException(option,argv[i]);
 960             break;
 961           }
 962         if (LocaleCompare("depth",option+1) == 0)
 963           {
 964             if (*option == '+')
 965               break;
 966             i++;
 967             if (i == (ssize_t) argc)
 968               ThrowDisplayException(OptionError,"MissingArgument",option);
 969             if (IsGeometry(argv[i]) == MagickFalse)
 970               ThrowDisplayInvalidArgumentException(option,argv[i]);
 971             break;
 972           }
 973         if (LocaleCompare("deskew",option+1) == 0)
 974           {
 975             if (*option == '+')
 976               break;
 977             i++;
 978             if (i == (ssize_t) (argc-1))
 979               ThrowDisplayException(OptionError,"MissingArgument",option);
 980             if (IsGeometry(argv[i]) == MagickFalse)
 981               ThrowDisplayInvalidArgumentException(option,argv[i]);
 982             break;
 983           }
 984         if (LocaleCompare("despeckle",option+1) == 0)
 985           break;
 986         if (LocaleCompare("display",option+1) == 0)
 987           {
 988             if (*option == '+')
 989               break;
 990             i++;
 991             if (i == (ssize_t) argc)
 992               ThrowDisplayException(OptionError,"MissingArgument",option);
 993             break;
 994           }
 995         if (LocaleCompare("dispose",option+1) == 0)
 996           {
 997             ssize_t
 998               dispose;
 999
1000             if (*option == '+')
1001               break;
1002             i++;
1003             if (i == (ssize_t) argc)
1004               ThrowDisplayException(OptionError,"MissingArgument",option);
1005             dispose=ParseCommandOption(MagickDisposeOptions,MagickFalse,argv[i]);
1006             if (dispose < 0)
1007               ThrowDisplayException(OptionError,"UnrecognizedDisposeMethod",
1008                 argv[i]);
1009             break;
1010           }
1011         if (LocaleCompare("dither",option+1) == 0)
1012           {
1013             ssize_t
1014               method;
1015
1016             quantize_info->dither=MagickFalse;
1017             if (*option == '+')
1018               break;
1019             i++;
1020             if (i == (ssize_t) argc)
1021               ThrowDisplayException(OptionError,"MissingArgument",option);
1022             method=ParseCommandOption(MagickDitherOptions,MagickFalse,argv[i]);
1023             if (method < 0)
1024               ThrowDisplayException(OptionError,"UnrecognizedDitherMethod",
1025                 argv[i]);
1026             quantize_info->dither=MagickTrue;
1027             quantize_info->dither_method=(DitherMethod) method;
1028             break;
1029           }
1030         if (LocaleCompare("duration",option+1) == 0)
1031           {
1032             if (*option == '+')
1033               break;
1034             i++;
1035             if (i == (ssize_t) (argc-1))
1036               ThrowDisplayException(OptionError,"MissingArgument",option);
1037             if (IsGeometry(argv[i]) == MagickFalse)
1038               ThrowDisplayInvalidArgumentException(option,argv[i]);
1039             break;
1040           }
1041         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1042       }
1043       case 'e':
1044       {
1045         if (LocaleCompare("edge",option+1) == 0)
1046           {
1047             if (*option == '+')
1048               break;
1049             i++;
1050             if (i == (ssize_t) argc)
1051               ThrowDisplayException(OptionError,"MissingArgument",option);
1052             if (IsGeometry(argv[i]) == MagickFalse)
1053               ThrowDisplayInvalidArgumentException(option,argv[i]);
1054             break;
1055           }
1056         if (LocaleCompare("endian",option+1) == 0)
1057           {
1058             ssize_t
1059               endian;
1060
1061             if (*option == '+')
1062               break;
1063             i++;
1064             if (i == (ssize_t) argc)
1065               ThrowDisplayException(OptionError,"MissingArgument",option);
1066             endian=ParseCommandOption(MagickEndianOptions,MagickFalse,
1067               argv[i]);
1068             if (endian < 0)
1069               ThrowDisplayException(OptionError,"UnrecognizedEndianType",
1070                 argv[i]);
1071             break;
1072           }
1073         if (LocaleCompare("enhance",option+1) == 0)
1074           break;
1075         if (LocaleCompare("equalize",option+1) == 0)
1076           break;
1077         if (LocaleCompare("extract",option+1) == 0)
1078           {
1079             if (*option == '+')
1080               break;
1081             i++;
1082             if (i == (ssize_t) argc)
1083               ThrowDisplayException(OptionError,"MissingArgument",option);
1084             if (IsGeometry(argv[i]) == MagickFalse)
1085               ThrowDisplayInvalidArgumentException(option,argv[i]);
1086             break;
1087           }
1088         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1089       }
1090       case 'f':
1091       {
1092         if (LocaleCompare("filter",option+1) == 0)
1093           {
1094             ssize_t
1095               filter;
1096
1097             if (*option == '+')
1098               break;
1099             i++;
1100             if (i == (ssize_t) argc)
1101               ThrowDisplayException(OptionError,"MissingArgument",option);
1102             filter=ParseCommandOption(MagickFilterOptions,MagickFalse,argv[i]);
1103             if (filter < 0)
1104               ThrowDisplayException(OptionError,"UnrecognizedImageFilter",
1105                 argv[i]);
1106             break;
1107           }
1108         if (LocaleCompare("flatten",option+1) == 0)
1109           break;
1110         if (LocaleCompare("flip",option+1) == 0)
1111           break;
1112         if (LocaleCompare("flop",option+1) == 0)
1113           break;
1114         if (LocaleCompare("font",option+1) == 0)
1115           {
1116             if (*option == '+')
1117               break;
1118             i++;
1119             if (i == (ssize_t) argc)
1120               ThrowDisplayException(OptionError,"MissingArgument",option);
1121             resource_info.font=XGetResourceClass(resource_database,
1122               GetClientName(),"font",argv[i]);
1123             break;
1124           }
1125         if (LocaleCompare("foreground",option+1) == 0)
1126           {
1127             if (*option == '+')
1128               break;
1129             i++;
1130             if (i == (ssize_t) argc)
1131               ThrowDisplayException(OptionError,"MissingArgument",option);
1132             resource_info.foreground_color=argv[i];
1133             break;
1134           }
1135         if (LocaleCompare("format",option+1) == 0)
1136           {
1137             if (*option == '+')
1138               break;
1139             i++;
1140             if (i == (ssize_t) (argc-1))
1141               ThrowDisplayException(OptionError,"MissingArgument",option);
1142             break;
1143           }
1144         if (LocaleCompare("frame",option+1) == 0)
1145           {
1146             if (*option == '+')
1147               break;
1148             i++;
1149             if (i == (ssize_t) argc)
1150               ThrowDisplayException(OptionError,"MissingArgument",option);
1151             if (IsGeometry(argv[i]) == MagickFalse)
1152               ThrowDisplayInvalidArgumentException(option,argv[i]);
1153             break;
1154           }
1155         if (LocaleCompare("fuzz",option+1) == 0)
1156           {
1157             if (*option == '+')
1158               break;
1159             i++;
1160             if (i == (ssize_t) (argc-1))
1161               ThrowDisplayException(OptionError,"MissingArgument",option);
1162             if (IsGeometry(argv[i]) == MagickFalse)
1163               ThrowDisplayInvalidArgumentException(option,argv[i]);
1164             break;
1165           }
1166         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1167       }
1168       case 'g':
1169       {
1170         if (LocaleCompare("gamma",option+1) == 0)
1171           {
1172             i++;
1173             if (i == (ssize_t) argc)
1174               ThrowDisplayException(OptionError,"MissingArgument",option);
1175             if (IsGeometry(argv[i]) == MagickFalse)
1176               ThrowDisplayInvalidArgumentException(option,argv[i]);
1177             break;
1178           }
1179         if (LocaleCompare("geometry",option+1) == 0)
1180           {
1181             resource_info.image_geometry=(char *) NULL;
1182             if (*option == '+')
1183               break;
1184             (void) CopyMagickString(argv[i]+1,"sans",MaxTextExtent);
1185             i++;
1186             if (i == (ssize_t) argc)
1187               ThrowDisplayException(OptionError,"MissingArgument",option);
1188             if (IsGeometry(argv[i]) == MagickFalse)
1189               ThrowDisplayInvalidArgumentException(option,argv[i]);
1190             resource_info.image_geometry=ConstantString(argv[i]);
1191             break;
1192           }
1193         if (LocaleCompare("gravity",option+1) == 0)
1194           {
1195             ssize_t
1196               gravity;
1197
1198             if (*option == '+')
1199               break;
1200             i++;
1201             if (i == (ssize_t) (argc-1))
1202               ThrowDisplayException(OptionError,"MissingArgument",option);
1203             gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,
1204               argv[i]);
1205             if (gravity < 0)
1206               ThrowDisplayException(OptionError,"UnrecognizedGravityType",
1207                 argv[i]);
1208             break;
1209           }
1210         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1211       }
1212       case 'h':
1213       {
1214         if ((LocaleCompare("help",option+1) == 0) ||
1215             (LocaleCompare("-help",option+1) == 0))
1216           break;
1217         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1218       }
1219       case 'i':
1220       {
1221         if (LocaleCompare("identify",option+1) == 0)
1222           break;
1223         if (LocaleCompare("iconGeometry",option+1) == 0)
1224           {
1225             resource_info.icon_geometry=(char *) NULL;
1226             if (*option == '+')
1227               break;
1228             i++;
1229             if (i == (ssize_t) argc)
1230               ThrowDisplayException(OptionError,"MissingArgument",option);
1231             if (IsGeometry(argv[i]) == MagickFalse)
1232               ThrowDisplayInvalidArgumentException(option,argv[i]);
1233             resource_info.icon_geometry=argv[i];
1234             break;
1235           }
1236         if (LocaleCompare("iconic",option+1) == 0)
1237           {
1238             resource_info.iconic=(*option == '-') ? MagickTrue : MagickFalse;
1239             break;
1240           }
1241         if (LocaleCompare("immutable",option+1) == 0)
1242           {
1243             resource_info.immutable=(*option == '-') ? MagickTrue : MagickFalse;
1244             break;
1245           }
1246         if (LocaleCompare("interlace",option+1) == 0)
1247           {
1248             ssize_t
1249               interlace;
1250
1251             if (*option == '+')
1252               break;
1253             i++;
1254             if (i == (ssize_t) argc)
1255               ThrowDisplayException(OptionError,"MissingArgument",option);
1256             interlace=ParseCommandOption(MagickInterlaceOptions,MagickFalse,
1257               argv[i]);
1258             if (interlace < 0)
1259               ThrowDisplayException(OptionError,"UnrecognizedInterlaceType",
1260                 argv[i]);
1261             break;
1262           }
1263         if (LocaleCompare("interpolate",option+1) == 0)
1264           {
1265             ssize_t
1266               interpolate;
1267
1268             if (*option == '+')
1269               break;
1270             i++;
1271             if (i == (ssize_t) argc)
1272               ThrowDisplayException(OptionError,"MissingArgument",option);
1273             interpolate=ParseCommandOption(MagickInterpolateOptions,MagickFalse,
1274               argv[i]);
1275             if (interpolate < 0)
1276               ThrowDisplayException(OptionError,"UnrecognizedInterpolateMethod",
1277                 argv[i]);
1278             break;
1279           }
1280         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1281       }
1282       case 'l':
1283       {
1284         if (LocaleCompare("label",option+1) == 0)
1285           {
1286             if (*option == '+')
1287               break;
1288             i++;
1289             if (i == (ssize_t) argc)
1290               ThrowDisplayException(OptionError,"MissingArgument",option);
1291             break;
1292           }
1293         if (LocaleCompare("limit",option+1) == 0)
1294           {
1295             char
1296               *p;
1297
1298             double
1299               value;
1300
1301             ssize_t
1302               resource;
1303
1304             if (*option == '+')
1305               break;
1306             i++;
1307             if (i == (ssize_t) argc)
1308               ThrowDisplayException(OptionError,"MissingArgument",option);
1309             resource=ParseCommandOption(MagickResourceOptions,MagickFalse,
1310               argv[i]);
1311             if (resource < 0)
1312               ThrowDisplayException(OptionError,"UnrecognizedResourceType",
1313                 argv[i]);
1314             i++;
1315             if (i == (ssize_t) argc)
1316               ThrowDisplayException(OptionError,"MissingArgument",option);
1317             value=StringToDouble(argv[i],&p);
1318             (void) value;
1319             if ((p == argv[i]) && (LocaleCompare("unlimited",argv[i]) != 0))
1320               ThrowDisplayInvalidArgumentException(option,argv[i]);
1321             break;
1322           }
1323         if (LocaleCompare("list",option+1) == 0)
1324           {
1325             ssize_t
1326               list;
1327
1328             if (*option == '+')
1329               break;
1330             i++;
1331             if (i == (ssize_t) argc)
1332               ThrowDisplayException(OptionError,"MissingArgument",option);
1333             list=ParseCommandOption(MagickListOptions,MagickFalse,argv[i]);
1334             if (list < 0)
1335               ThrowDisplayException(OptionError,"UnrecognizedListType",argv[i]);
1336             status=MogrifyImageInfo(image_info,(int) (i-j+1),(const char **)
1337               argv+j,exception);
1338             DestroyDisplay();
1339             return(status != 0 ? MagickFalse : MagickTrue);
1340           }
1341         if (LocaleCompare("log",option+1) == 0)
1342           {
1343             if (*option == '+')
1344               break;
1345             i++;
1346             if ((i == (ssize_t) argc) ||
1347                 (strchr(argv[i],'%') == (char *) NULL))
1348               ThrowDisplayException(OptionError,"MissingArgument",option);
1349             break;
1350           }
1351         if (LocaleCompare("loop",option+1) == 0)
1352           {
1353             if (*option == '+')
1354               break;
1355             i++;
1356             if (i == (ssize_t) (argc-1))
1357               ThrowDisplayException(OptionError,"MissingArgument",option);
1358             if (IsGeometry(argv[i]) == MagickFalse)
1359               ThrowDisplayInvalidArgumentException(option,argv[i]);
1360             iterations=StringToUnsignedLong(argv[i]);
1361             break;
1362           }
1363         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1364       }
1365       case 'm':
1366       {
1367         if (LocaleCompare("magnify",option+1) == 0)
1368           {
1369             resource_info.magnify=2;
1370             if (*option == '+')
1371               break;
1372             i++;
1373             if (i == (ssize_t) argc)
1374               ThrowDisplayException(OptionError,"MissingArgument",option);
1375             if (IsGeometry(argv[i]) == MagickFalse)
1376               ThrowDisplayInvalidArgumentException(option,argv[i]);
1377             resource_info.magnify=(unsigned int) StringToUnsignedLong(argv[i]);
1378             break;
1379           }
1380         if (LocaleCompare("map",option+1) == 0)
1381           {
1382             resource_info.map_type=(char *) NULL;
1383             if (*option == '+')
1384               break;
1385             (void) strcpy(argv[i]+1,"san");
1386             i++;
1387             if (i == (ssize_t) argc)
1388               ThrowDisplayException(OptionError,"MissingArgument",option);
1389             resource_info.map_type=argv[i];
1390             break;
1391           }
1392         if (LocaleCompare("matte",option+1) == 0)
1393           break;
1394         if (LocaleCompare("mattecolor",option+1) == 0)
1395           {
1396             if (*option == '+')
1397               break;
1398             i++;
1399             if (i == (ssize_t) argc)
1400               ThrowDisplayException(OptionError,"MissingArgument",option);
1401             resource_info.matte_color=argv[i];
1402             break;
1403           }
1404         if (LocaleCompare("monitor",option+1) == 0)
1405           break;
1406         if (LocaleCompare("monochrome",option+1) == 0)
1407           {
1408             if (*option == '+')
1409               break;
1410             quantize_info->number_colors=2;
1411             quantize_info->colorspace=GRAYColorspace;
1412             break;
1413           }
1414         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1415       }
1416       case 'n':
1417       {
1418         if (LocaleCompare("name",option+1) == 0)
1419           {
1420             resource_info.name=(char *) NULL;
1421             if (*option == '+')
1422               break;
1423             i++;
1424             if (i == (ssize_t) argc)
1425               ThrowDisplayException(OptionError,"MissingArgument",option);
1426             resource_info.name=ConstantString(argv[i]);
1427             break;
1428           }
1429         if (LocaleCompare("negate",option+1) == 0)
1430           break;
1431         if (LocaleCompare("noop",option+1) == 0)
1432           break;
1433         if (LocaleCompare("normalize",option+1) == 0)
1434           break;
1435         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1436       }
1437       case 'p':
1438       {
1439         if (LocaleCompare("page",option+1) == 0)
1440           {
1441             resource_info.image_geometry=(char *) NULL;
1442             if (*option == '+')
1443               break;
1444             i++;
1445             if (i == (ssize_t) argc)
1446               ThrowDisplayException(OptionError,"MissingArgument",option);
1447             resource_info.image_geometry=ConstantString(argv[i]);
1448             break;
1449           }
1450         if (LocaleCompare("profile",option+1) == 0)
1451           {
1452             i++;
1453             if (i == (ssize_t) argc)
1454               ThrowDisplayException(OptionError,"MissingArgument",option);
1455             break;
1456           }
1457         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1458       }
1459       case 'q':
1460       {
1461         if (LocaleCompare("quality",option+1) == 0)
1462           {
1463             if (*option == '+')
1464               break;
1465             i++;
1466             if (i == (ssize_t) argc)
1467               ThrowDisplayException(OptionError,"MissingArgument",option);
1468             if (IsGeometry(argv[i]) == MagickFalse)
1469               ThrowDisplayInvalidArgumentException(option,argv[i]);
1470             break;
1471           }
1472         if (LocaleCompare("quantize",option+1) == 0)
1473           {
1474             ssize_t
1475               colorspace;
1476
1477             if (*option == '+')
1478               break;
1479             i++;
1480             if (i == (ssize_t) (argc-1))
1481               ThrowDisplayException(OptionError,"MissingArgument",option);
1482             colorspace=ParseCommandOption(MagickColorspaceOptions,
1483               MagickFalse,argv[i]);
1484             if (colorspace < 0)
1485               ThrowDisplayException(OptionError,"UnrecognizedColorspace",
1486                 argv[i]);
1487             break;
1488           }
1489         if (LocaleCompare("quiet",option+1) == 0)
1490           break;
1491         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1492       }
1493       case 'r':
1494       {
1495         if (LocaleCompare("raise",option+1) == 0)
1496           {
1497             i++;
1498             if (i == (ssize_t) argc)
1499               ThrowDisplayException(OptionError,"MissingArgument",option);
1500             if (IsGeometry(argv[i]) == MagickFalse)
1501               ThrowDisplayInvalidArgumentException(option,argv[i]);
1502             break;
1503           }
1504         if (LocaleCompare("regard-warnings",option+1) == 0)
1505           break;
1506         if (LocaleCompare("remote",option+1) == 0)
1507           {
1508             i++;
1509             if (i == (ssize_t) argc)
1510               ThrowDisplayException(OptionError,"MissingArgument",option);
1511             if (XRemoteCommand(display,resource_info.window_id,argv[i]) != 0)
1512               return(MagickFalse);
1513             i--;
1514             break;
1515           }
1516         if (LocaleCompare("repage",option+1) == 0)
1517           {
1518             if (*option == '+')
1519               break;
1520             i++;
1521             if (i == (ssize_t) argc)
1522               ThrowDisplayException(OptionError,"MissingArgument",option);
1523             if (IsGeometry(argv[i]) == MagickFalse)
1524               ThrowDisplayInvalidArgumentException(option,argv[i]);
1525             break;
1526           }
1527         if (LocaleCompare("resample",option+1) == 0)
1528           {
1529             if (*option == '+')
1530               break;
1531             i++;
1532             if (i == (ssize_t) (argc-1))
1533               ThrowDisplayException(OptionError,"MissingArgument",option);
1534             if (IsGeometry(argv[i]) == MagickFalse)
1535               ThrowDisplayInvalidArgumentException(option,argv[i]);
1536             break;
1537           }
1538         if (LocaleCompare("resize",option+1) == 0)
1539           {
1540             if (*option == '+')
1541               break;
1542             i++;
1543             if (i == (ssize_t) argc)
1544               ThrowDisplayException(OptionError,"MissingArgument",option);
1545             if (IsGeometry(argv[i]) == MagickFalse)
1546               ThrowDisplayInvalidArgumentException(option,argv[i]);
1547             break;
1548           }
1549         if (LocaleNCompare("respect-parentheses",option+1,17) == 0)
1550           {
1551             respect_parenthesis=(*option == '-') ? MagickTrue : MagickFalse;
1552             break;
1553           }
1554         if (LocaleCompare("roll",option+1) == 0)
1555           {
1556             if (*option == '+')
1557               break;
1558             i++;
1559             if (i == (ssize_t) argc)
1560               ThrowDisplayException(OptionError,"MissingArgument",option);
1561             if (IsGeometry(argv[i]) == MagickFalse)
1562               ThrowDisplayInvalidArgumentException(option,argv[i]);
1563             break;
1564           }
1565         if (LocaleCompare("rotate",option+1) == 0)
1566           {
1567             i++;
1568             if (i == (ssize_t) argc)
1569               ThrowDisplayException(OptionError,"MissingArgument",option);
1570             if (IsGeometry(argv[i]) == MagickFalse)
1571               ThrowDisplayInvalidArgumentException(option,argv[i]);
1572             break;
1573           }
1574         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1575       }
1576       case 's':
1577       {
1578         if (LocaleCompare("sample",option+1) == 0)
1579           {
1580             if (*option == '+')
1581               break;
1582             i++;
1583             if (i == (ssize_t) argc)
1584               ThrowDisplayException(OptionError,"MissingArgument",option);
1585             if (IsGeometry(argv[i]) == MagickFalse)
1586               ThrowDisplayInvalidArgumentException(option,argv[i]);
1587             break;
1588           }
1589         if (LocaleCompare("sampling-factor",option+1) == 0)
1590           {
1591             if (*option == '+')
1592               break;
1593             i++;
1594             if (i == (ssize_t) argc)
1595               ThrowDisplayException(OptionError,"MissingArgument",option);
1596             if (IsGeometry(argv[i]) == MagickFalse)
1597               ThrowDisplayInvalidArgumentException(option,argv[i]);
1598             break;
1599           }
1600         if (LocaleCompare("scenes",option+1) == 0)
1601           {
1602             if (*option == '+')
1603               break;
1604             i++;
1605             if (i == (ssize_t) argc)
1606               ThrowDisplayException(OptionError,"MissingArgument",option);
1607             if (IsSceneGeometry(argv[i],MagickFalse) == MagickFalse)
1608               ThrowDisplayInvalidArgumentException(option,argv[i]);
1609             break;
1610           }
1611         if (LocaleCompare("seed",option+1) == 0)
1612           {
1613             if (*option == '+')
1614               break;
1615             i++;
1616             if (i == (ssize_t) (argc-1))
1617               ThrowDisplayException(OptionError,"MissingArgument",option);
1618             if (IsGeometry(argv[i]) == MagickFalse)
1619               ThrowDisplayInvalidArgumentException(option,argv[i]);
1620             break;
1621           }
1622         if (LocaleCompare("segment",option+1) == 0)
1623           {
1624             if (*option == '+')
1625               break;
1626             i++;
1627             if (i == (ssize_t) argc)
1628               ThrowDisplayException(OptionError,"MissingArgument",option);
1629             if (IsGeometry(argv[i]) == MagickFalse)
1630               ThrowDisplayInvalidArgumentException(option,argv[i]);
1631             break;
1632           }
1633         if (LocaleCompare("set",option+1) == 0)
1634           {
1635             i++;
1636             if (i == (ssize_t) argc)
1637               ThrowDisplayException(OptionError,"MissingArgument",option);
1638             if (*option == '+')
1639               break;
1640             i++;
1641             if (i == (ssize_t) argc)
1642               ThrowDisplayException(OptionError,"MissingArgument",option);
1643             break;
1644           }
1645         if (LocaleCompare("sharpen",option+1) == 0)
1646           {
1647             if (*option == '+')
1648               break;
1649             i++;
1650             if (i == (ssize_t) argc)
1651               ThrowDisplayException(OptionError,"MissingArgument",option);
1652             if (IsGeometry(argv[i]) == MagickFalse)
1653               ThrowDisplayInvalidArgumentException(option,argv[i]);
1654             break;
1655           }
1656         if (LocaleCompare("shared-memory",option+1) == 0)
1657           {
1658             resource_info.use_shared_memory= (*option == '-') ? MagickTrue :
1659               MagickFalse;
1660             break;
1661           }
1662         if (LocaleCompare("size",option+1) == 0)
1663           {
1664             if (*option == '+')
1665               break;
1666             i++;
1667             if (i == (ssize_t) argc)
1668               ThrowDisplayException(OptionError,"MissingArgument",option);
1669             if (IsGeometry(argv[i]) == MagickFalse)
1670               ThrowDisplayInvalidArgumentException(option,argv[i]);
1671             break;
1672           }
1673         if (LocaleCompare("strip",option+1) == 0)
1674           break;
1675         if (LocaleCompare("support",option+1) == 0)
1676           {
1677             i++;  /* deprecated */
1678             break;
1679           }
1680         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1681       }
1682       case 't':
1683       {
1684         if (LocaleCompare("text-font",option+1) == 0)
1685           {
1686             resource_info.text_font=(char *) NULL;
1687             if (*option == '+')
1688               break;
1689             i++;
1690             if (i == (ssize_t) argc)
1691               ThrowDisplayException(OptionError,"MissingArgument",option);
1692             resource_info.text_font=XGetResourceClass(resource_database,
1693               GetClientName(),"font",argv[i]);
1694             break;
1695           }
1696         if (LocaleCompare("texture",option+1) == 0)
1697           {
1698             if (*option == '+')
1699               break;
1700             i++;
1701             if (i == (ssize_t) argc)
1702               ThrowDisplayException(OptionError,"MissingArgument",option);
1703             break;
1704           }
1705         if (LocaleCompare("threshold",option+1) == 0)
1706           {
1707             if (*option == '+')
1708               break;
1709             i++;
1710             if (i == (ssize_t) argc)
1711               ThrowDisplayException(OptionError,"MissingArgument",option);
1712             if (IsGeometry(argv[i]) == MagickFalse)
1713               ThrowDisplayInvalidArgumentException(option,argv[i]);
1714             break;
1715           }
1716         if (LocaleCompare("thumbnail",option+1) == 0)
1717           {
1718             if (*option == '+')
1719               break;
1720             i++;
1721             if (i == (ssize_t) argc)
1722               ThrowDisplayException(OptionError,"MissingArgument",option);
1723             if (IsGeometry(argv[i]) == MagickFalse)
1724               ThrowDisplayInvalidArgumentException(option,argv[i]);
1725             break;
1726           }
1727         if (LocaleCompare("title",option+1) == 0)
1728           {
1729             resource_info.title=(char *) NULL;
1730             if (*option == '+')
1731               break;
1732             i++;
1733             if (i == (ssize_t) argc)
1734               ThrowDisplayException(OptionError,"MissingArgument",option);
1735             resource_info.title=argv[i];
1736             break;
1737           }
1738         if (LocaleCompare("transparent-color",option+1) == 0)
1739           {
1740             if (*option == '+')
1741               break;
1742             i++;
1743             if (i == (ssize_t) (argc-1))
1744               ThrowDisplayException(OptionError,"MissingArgument",option);
1745             break;
1746           }
1747         if (LocaleCompare("treedepth",option+1) == 0)
1748           {
1749             quantize_info->tree_depth=0;
1750             if (*option == '+')
1751               break;
1752             i++;
1753             if (i == (ssize_t) argc)
1754               ThrowDisplayException(OptionError,"MissingArgument",option);
1755             if (IsGeometry(argv[i]) == MagickFalse)
1756               ThrowDisplayInvalidArgumentException(option,argv[i]);
1757             quantize_info->tree_depth=StringToUnsignedLong(argv[i]);
1758             break;
1759           }
1760         if (LocaleCompare("trim",option+1) == 0)
1761           break;
1762         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1763       }
1764       case 'u':
1765       {
1766         if (LocaleCompare("update",option+1) == 0)
1767           {
1768             resource_info.update=(unsigned int) (*option == '-');
1769             if (*option == '+')
1770               break;
1771             i++;
1772             if (i == (ssize_t) argc)
1773               ThrowDisplayException(OptionError,"MissingArgument",option);
1774             if (IsGeometry(argv[i]) == MagickFalse)
1775               ThrowDisplayInvalidArgumentException(option,argv[i]);
1776             resource_info.update=(unsigned int) StringToUnsignedLong(argv[i]);
1777             break;
1778           }
1779         if (LocaleCompare("use-pixmap",option+1) == 0)
1780           {
1781             resource_info.use_pixmap=(*option == '-') ? MagickTrue :
1782               MagickFalse;
1783             break;
1784           }
1785         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1786       }
1787       case 'v':
1788       {
1789         if (LocaleCompare("verbose",option+1) == 0)
1790           break;
1791         if ((LocaleCompare("version",option+1) == 0) ||
1792             (LocaleCompare("-version",option+1) == 0))
1793           {
1794             (void) FormatLocaleFile(stdout,"Version: %s\n",
1795               GetMagickVersion((size_t *) NULL));
1796             (void) FormatLocaleFile(stdout,"Copyright: %s\n",
1797               GetMagickCopyright());
1798             (void) FormatLocaleFile(stdout,"Features: %s\n\n",
1799               GetMagickFeatures());
1800             break;
1801           }
1802         if (LocaleCompare("visual",option+1) == 0)
1803           {
1804             resource_info.visual_type=(char *) NULL;
1805             if (*option == '+')
1806               break;
1807             i++;
1808             if (i == (ssize_t) argc)
1809               ThrowDisplayException(OptionError,"MissingArgument",option);
1810             resource_info.visual_type=argv[i];
1811             break;
1812           }
1813         if (LocaleCompare("virtual-pixel",option+1) == 0)
1814           {
1815             ssize_t
1816               method;
1817
1818             if (*option == '+')
1819               break;
1820             i++;
1821             if (i == (ssize_t) (argc-1))
1822               ThrowDisplayException(OptionError,"MissingArgument",option);
1823             method=ParseCommandOption(MagickVirtualPixelOptions,MagickFalse,
1824               argv[i]);
1825             if (method < 0)
1826               ThrowDisplayException(OptionError,
1827                 "UnrecognizedVirtualPixelMethod",argv[i]);
1828             break;
1829           }
1830         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1831       }
1832       case 'w':
1833       {
1834         if (LocaleCompare("window",option+1) == 0)
1835           {
1836             resource_info.window_id=(char *) NULL;
1837             if (*option == '+')
1838               break;
1839             i++;
1840             if (i == (ssize_t) argc)
1841               ThrowDisplayException(OptionError,"MissingArgument",option);
1842             resource_info.window_id=argv[i];
1843             break;
1844           }
1845         if (LocaleCompare("window-group",option+1) == 0)
1846           {
1847             resource_info.window_group=(char *) NULL;
1848             if (*option == '+')
1849               break;
1850             i++;
1851             if (i == (ssize_t) argc)
1852               ThrowDisplayException(OptionError,"MissingArgument",option);
1853             if (StringToDouble(argv[i],(char **) NULL) != 0)
1854               resource_info.window_group=argv[i];
1855             break;
1856           }
1857         if (LocaleCompare("write",option+1) == 0)
1858           {
1859             resource_info.write_filename=(char *) NULL;
1860             if (*option == '+')
1861               break;
1862             i++;
1863             if (i == (ssize_t) argc)
1864               ThrowDisplayException(OptionError,"MissingArgument",option);
1865             resource_info.write_filename=argv[i];
1866             if (IsPathAccessible(resource_info.write_filename) != MagickFalse)
1867               {
1868                 char
1869                   answer[2],
1870                   *p;
1871
1872                 (void) FormatLocaleFile(stderr,"Overwrite %s? ",
1873                   resource_info.write_filename);
1874                 p=fgets(answer,(int) sizeof(answer),stdin);
1875                 (void) p;
1876                 if (((*answer != 'y') && (*answer != 'Y')))
1877                   return(MagickFalse);
1878               }
1879             break;
1880           }
1881         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1882       }
1883       case '?':
1884         break;
1885       default:
1886         ThrowDisplayException(OptionError,"UnrecognizedOption",option);
1887     }
1888     fire=(GetCommandOptionFlags(MagickCommandOptions,MagickFalse,option) &
1889       FireOptionFlag) == 0 ?  MagickFalse : MagickTrue;
1890     if (fire != MagickFalse)
1891       FireImageStack(MagickFalse,MagickTrue,MagickTrue);
1892   }
1893   if (k != 0)
1894     ThrowDisplayException(OptionError,"UnbalancedParenthesis",argv[i]);
1895   if (state & RetainColorsState)
1896     {
1897       XRetainWindowColors(display,XRootWindow(display,XDefaultScreen(display)));
1898       (void) XSync(display,MagickFalse);
1899     }
1900   DestroyDisplay();
1901   return(status != 0 ? MagickTrue : MagickFalse);
1902 #else
1903   (void) argc;
1904   (void) argv;
1905   (void) ThrowMagickException(exception,GetMagickModule(),MissingDelegateError,
1906     "DelegateLibrarySupportNotBuiltIn","`%s' (X11)",image_info->filename);
1907   return(DisplayUsage());
1908 #endif
1909 }