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/*
% Copyright (C) 2003 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"
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d X C I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% 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)
{
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;
}
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");
}
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