/*

% Copyright (C) 2003-2025 GraphicsMagick Group

% Copyright (C) 2002 ImageMagick Studio

% Copyright 1991-1999 E. I. du Pont de Nemours and Company

%

% This program is covered by multiple licenses, which are described in

% Copyright.txt. You should have received a copy of Copyright.txt with this

% package; otherwise see http://www.graphicsmagick.org/www/Copyright.html.

%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%                                                                             %

%                                                                             %

%                                                                             %

%                               X   X   CCCC                                  %

%                                X X   C                                      %

%                                 X    C                                      %

%                                X X   C                                      %

%                               X   X   CCCC                                  %

%                                                                             %

%                                                                             %

%                        Read Constant Color Image.                           %

%                                                                             %

%                                                                             %

%                              Software Design                                %

%                                John Cristy                                  %

%                                 July 1992                                   %

%                                                                             %

%                                                                             %

%                                                                             %

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%

%

*/

/*

  Include declarations.

*/

#include "magick/studio.h"

#include "magick/blob.h"

#include "magick/color.h"

#include "magick/color_lookup.h"

#include "magick/colormap.h"

#include "magick/composite.h"

#include "magick/magick.h"

#include "magick/pixel_cache.h"

#include "magick/utility.h"

#include "magick/static.h"

/*

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%                                                                             %

%                                                                             %

%                                                                             %

%   R e a d X C I m a g e                                                     %

%                                                                             %

%                                                                             %

%                                                                             %

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%

%  Method ReadXCImage creates a constant image and initializes it to the

%  X server color as specified by the filename.  It allocates the memory

%  necessary for the new Image structure and returns a pointer to the new

%  image.

%

%  The format of the ReadXCImage method is:

%

%      Image *ReadXCImage(const ImageInfo *image_info,ExceptionInfo *exception)

%

%  A description of each parameter follows:

%

%    o image:  Method ReadXCImage returns a pointer to the image after

%      creating it. A null image is returned if there is a memory shortage

%      or if the image cannot be read.

%

%    o image_info: Specifies a pointer to a ImageInfo structure.

%

%    o exception: return any errors or warnings in this structure.

%

%

*/

static Image *ReadXCImage(const ImageInfo *image_info,ExceptionInfo *exception)

{

  Image

    *image;

  MagickPassFail

    status;

  /*

    Initialize Image structure.

  */

  assert(image_info != (const ImageInfo *) NULL);

  assert(image_info->signature == MagickSignature);

  assert(exception != (ExceptionInfo *) NULL);

  assert(exception->signature == MagickSignature);

  image=AllocateImage(image_info);

  if (image->columns == 0)

    image->columns=1;

  if (image->rows == 0)

    image->rows=1;

  if (CheckImagePixelLimits(image, exception) != MagickPass)

    ThrowReaderException(ResourceLimitError,ImagePixelLimitExceeded,image);

  (void) strlcpy(image->filename,image_info->filename,MaxTextExtent);

  status=QueryColorDatabase((char *) image_info->filename,

    &image->background_color,exception);

  if (status == MagickFail)

    {

      /* Promote warning to error */

      exception->severity = OptionError;

      DestroyImage(image);

      return ((Image *) NULL);

    }

  /*

    Create a colormap if image is not DirectClass type.

  */

  if ((TrueColorType != image_info->type) &&

      (TrueColorMatteType != image_info->type))

    {

      if (!AllocateImageColormap(image,1))

        ThrowReaderException(ResourceLimitError,MemoryAllocationFailed,image);

      image->colormap[0]=image->background_color;

    }

  /*

    Initialize image pixels to the value of image->background_color

  */

  status=SetImageEx(image,image->background_color.opacity,exception);

  if (status == MagickFail)

    {

      DestroyImage(image);

      image=(Image *) NULL;

    }

  else

    {

      StopTimer(&image->timer);

    }

  return image;

}

/*

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%                                                                             %

%                                                                             %

%                                                                             %

%   R e g i s t e r X C I m a g e                                             %

%                                                                             %

%                                                                             %

%                                                                             %

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%

%  Method RegisterXCImage adds attributes for the XC image format to

%  the list of supported formats.  The attributes include the image format

%  tag, a method to read and/or write the format, whether the format

%  supports the saving of more than one frame to the same file or blob,

%  whether the format supports native in-memory I/O, and a brief

%  description of the format.

%

%  The format of the RegisterXCImage method is:

%

%      RegisterXCImage(void)

%

*/

ModuleExport void RegisterXCImage(void)

{

  MagickInfo

    *entry;

  entry=SetMagickInfo("XC");

  entry->decoder=(DecoderHandler) ReadXCImage;

  entry->adjoin=False;

  entry->raw=True;

  entry->description="Constant image uniform color";

  entry->module="XC";

  entry->coder_class=PrimaryCoderClass;

  entry->extension_treatment=IgnoreExtensionTreatment;

  (void) RegisterMagickInfo(entry);

}

/*

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%                                                                             %

%                                                                             %

%                                                                             %

%   U n r e g i s t e r X C I m a g e                                         %

%                                                                             %

%                                                                             %

%                                                                             %

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%

%  Method UnregisterXCImage removes format registrations made by the

%  XC module from the list of supported formats.

%

%  The format of the UnregisterXCImage method is:

%

%      UnregisterXCImage(void)

%

*/

ModuleExport void UnregisterXCImage(void)

{

  (void) UnregisterMagickInfo("XC");

}