/*
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% Read/Write ImageMagick Image Format. %
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% Software Design %
% John Cristy %
% July 1992 %
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% Copyright (C) 2001 ImageMagick Studio, a non-profit organization dedicated %
% to making software imaging solutions freely available. %
% %
% Permission is hereby granted, free of charge, to any person obtaining a %
% copy of this software and associated documentation files ("ImageMagick"), %
% to deal in ImageMagick without restriction, including without limitation %
% the rights to use, copy, modify, merge, publish, distribute, sublicense, %
% and/or sell copies of ImageMagick, and to permit persons to whom the %
% ImageMagick is furnished to do so, subject to the following conditions: %
% %
% The above copyright notice and this permission notice shall be included in %
% all copies or substantial portions of ImageMagick. %
% %
% The software is provided "as is", without warranty of any kind, express or %
% implied, including but not limited to the warranties of merchantability, %
% fitness for a particular purpose and noninfringement. In no event shall %
% ImageMagick Studio be liable for any claim, damages or other liability, %
% whether in an action of contract, tort or otherwise, arising from, out of %
% or in connection with ImageMagick or the use or other dealings in %
% ImageMagick. %
% %
% Except as contained in this notice, the name of the ImageMagick Studio %
% shall not be used in advertising or otherwise to promote the sale, use or %
% other dealings in ImageMagick without prior written authorization from the %
% ImageMagick Studio. %
% %
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*/
/*
Include declarations.
*/
#include "magick.h"
#include "defines.h"
/*
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% R e a d L A B E L I m a g e %
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% Method ReadLABELImage reads a LABEL image file and returns it. It
% allocates the memory necessary for the new Image structure and returns a
% pointer to the new image.
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% The format of the ReadLABELImage method is:
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% Image *ReadLABELImage(const ImageInfo *image_info,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: Method ReadLABELImage returns a pointer to the image after
% reading. 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 an ImageInfo structure.
%
% o exception: return any errors or warnings in this structure.
%
%
*/
static Image *ReadLABELImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
DrawInfo
*draw_info;
FontMetric
metrics;
int
y;
Image
*image;
register int
x;
register PixelPacket
*q;
unsigned int
status;
/*
Initialize Image structure.
*/
image=AllocateImage(image_info);
draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
QueryColorDatabase("black",&draw_info->fill);
draw_info->gravity=WestGravity;
draw_info->text=AllocateString(image_info->filename);
status=GetFontMetrics(image,draw_info,&metrics);
if (status == False)
ThrowReaderException(DelegateWarning,"Unable to get font metrics",image);
image->columns=metrics.width;
image->rows=metrics.height;
QueryColorDatabase("white",&image->background_color);
SetImage(image,OpaqueOpacity);
(void) AnnotateImage(image,draw_info);
image->matte=True;
for (y=0; y < (int) image->rows; y++)
{
q=GetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL)
break;
for (x=0; x < (int) image->columns; x++)
{
q->opacity=Intensity(*q);
q->red=image_info->pen.red;
q->green=image_info->pen.green;
q->blue=image_info->pen.blue;
q++;
}
if (!SyncImagePixels(image))
break;
}
DestroyDrawInfo(draw_info);
return(image);
}
/*
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% R e g i s t e r L A B E L I m a g e %
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% Method RegisterLABELImage adds attributes for the LABEL 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 RegisterLABELImage method is:
%
% RegisterLABELImage(void)
%
*/
ModuleExport void RegisterLABELImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("LABEL");
entry->decoder=ReadLABELImage;
entry->adjoin=False;
entry->description=AllocateString("Text image format");
entry->module=AllocateString("LABEL");
RegisterMagickInfo(entry);
}
/*
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% U n r e g i s t e r L A B E L I m a g e %
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% Method UnregisterLABELImage removes format registrations made by the
% LABEL module from the list of supported formats.
%
% The format of the UnregisterLABELImage method is:
%
% UnregisterLABELImage(void)
%
*/
ModuleExport void UnregisterLABELImage(void)
{
UnregisterMagickInfo("LABEL");
}
