text: /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %              PPPP   RRRR   EEEEE  V   V  IIIII  EEEEE  W   W                %
  %              P   P  R   R  E      V   V    I    E      W   W                %
  %              PPPP   RRRR   EEE    V   V    I    EEE    W   W                %
  %              P      R R    E       V V     I    E      W W W                %
  %              P      R  R   EEEEE    V    IIIII  EEEEE   W W                 %
  %                                                                             %
  %                                                                             %
  %                           Write A Preview Image.                            %
  %                                                                             %
  %                              Software Design                                %
  %                                   Cristy                                    %
  %                                 July 1992                                   %
  %                                                                             %
  %                                                                             %
  %  Copyright 1999-2020 ImageMagick Studio LLC, a non-profit organization      %
  %  dedicated to making software imaging solutions freely available.           %
  %                                                                             %
  %  You may not use this file except in compliance with the License.  You may  %
  %  obtain a copy of the License at                                            %
  %                                                                             %
  %    https://imagemagick.org/script/license.php                               %
  %                                                                             %
  %  Unless required by applicable law or agreed to in writing, software        %
  %  distributed under the License is distributed on an "AS IS" BASIS,          %
  %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  %  See the License for the specific language governing permissions and        %
  %  limitations under the License.                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %
  */
  
  /*
    Include declarations.
  */
  #include "magick/studio.h"
  #include "magick/property.h"
  #include "magick/blob.h"
  #include "magick/blob-private.h"
  #include "magick/client.h"
  #include "magick/constitute.h"
  #include "magick/effect.h"
  #include "magick/exception.h"
  #include "magick/exception-private.h"
  #include "magick/image.h"
  #include "magick/image-private.h"
  #include "magick/list.h"
  #include "magick/magick.h"
  #include "magick/memory_.h"
  #include "magick/monitor.h"
  #include "magick/monitor-private.h"
  #include "magick/pixel-accessor.h"
  #include "magick/quantum-private.h"
  #include "magick/resize.h"
  #include "magick/resource_.h"
  #include "magick/static.h"
  #include "magick/string_.h"
  #include "magick/module.h"
  #include "magick/transform.h"
  #include "magick/utility.h"
  
  /*
    Forward declarations.
  */
  static MagickBooleanType
    WritePreviewImage(const ImageInfo *,Image *);
  
  /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %   R e g i s t e r P R E V I E W I m a g e                                   %
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %  RegisterPREVIEWImage() adds attributes for the Preview 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 RegisterPREVIEWImage method is:
  %
  %      size_t RegisterPREVIEWImage(void)
  %
  */
  ModuleExport size_t RegisterPREVIEWImage(void)
  {
    MagickInfo
      *entry;
  
    entry=SetMagickInfo("PREVIEW");
    entry->encoder=(EncodeImageHandler *) WritePreviewImage;
    entry->adjoin=MagickFalse;
    entry->format_type=ImplicitFormatType;
    entry->description=ConstantString(
      "Show a preview an image enhancement, effect, or f/x");
    entry->magick_module=ConstantString("PREVIEW");
    (void) RegisterMagickInfo(entry);
    return(MagickImageCoderSignature);
  }
  
  /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %   U n r e g i s t e r P R E V I E W I m a g e                               %
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %  UnregisterPREVIEWImage() removes format registrations made by the
  %  PREVIEW module from the list of supported formats.
  %
  %  The format of the UnregisterPREVIEWImage method is:
  %
  %      UnregisterPREVIEWImage(void)
  %
  */
  ModuleExport void UnregisterPREVIEWImage(void)
  {
    (void) UnregisterMagickInfo("PREVIEW");
  }
  
  /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %   W r i t e P R E V I E W I m a g e                                         %
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %  WritePreviewImage creates several tiles each with a varying
  %  stength of an image enhancement function (e.g. gamma).  The image is written
  %  in the MIFF format.
  %
  %  The format of the WritePreviewImage method is:
  %
  %      MagickBooleanType WritePreviewImage(const ImageInfo *image_info,
  %        Image *image)
  %
  %  A description of each parameter follows.
  %
  %    o image_info: the image info.
  %
  %    o image:  The image.
  %
  */
  static MagickBooleanType WritePreviewImage(const ImageInfo *image_info,
    Image *image)
  {
    Image
      *preview_image;
  
    ImageInfo
      *write_info;
  
    MagickBooleanType
      status;
  
    /*
      Open output image file.
    */
    assert(image_info != (const ImageInfo *) NULL);
    assert(image_info->signature == MagickCoreSignature);
    assert(image != (Image *) NULL);
    assert(image->signature == MagickCoreSignature);
    if (image->debug != MagickFalse)
      (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
    preview_image=PreviewImage(image,image_info->preview_type,&image->exception);
    if (preview_image == (Image *) NULL)
      return(MagickFalse);
    (void) CopyMagickString(preview_image->filename,image_info->filename,
      MaxTextExtent);
    write_info=CloneImageInfo(image_info);
    *write_info->magick='\0';
    (void) SetImageInfo(write_info,1,&image->exception);
    if ((*write_info->magick == '\0') ||
        (LocaleCompare(write_info->magick,"PREVIEW") == 0))
      (void) FormatLocaleString(preview_image->filename,MaxTextExtent,
        "miff:%s",image_info->filename);
    status=WriteImage(write_info,preview_image);
    preview_image=DestroyImage(preview_image);
    write_info=DestroyImageInfo(write_info);
    return(status);
  }
  