/*
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% %
% %
% %
% H H TTTTT M M L %
% H H T MM MM L %
% HHHHH T M M M L %
% H H T M M L %
% H H T M M LLLLL %
% %
% %
% Read/Write ImageMagick Image Format. %
% %
% %
% Software Design %
% John Cristy %
% July 1992 %
% %
% %
% 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. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick.h"
#include "defines.h"
/*
Forward declarations.
*/
static unsigned int
WriteHTMLImage(const ImageInfo *,Image *);
/*
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% I s H T M L %
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%
% Method IsHTML returns True if the image format type, identified by the
% magick string, is HTML.
%
% The format of the IsHTML method is:
%
% unsigned int IsHTML(const unsigned char *magick,
% const unsigned int length)
%
% A description of each parameter follows:
%
% o status: Method IsHTML returns True if the image format type is HTML.
%
% o magick: This string is generally the first few bytes of an image file
% or blob.
%
% o length: Specifies the length of the magick string.
%
%
*/
static unsigned int IsHTML(const unsigned char *magick,
const unsigned int length)
{
if (length < 5)
return(False);
if (LocaleNCompare((char *) magick,"<html",5) == 0)
return(True);
return(False);
}
/*
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% R e g i s t e r H T M L I m a g e %
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%
% Method RegisterHTMLImage adds attributes for the HTML 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 RegisterHTMLImage method is:
%
% RegisterHTMLImage(void)
%
*/
ModuleExport void RegisterHTMLImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("HTM");
entry->encoder=WriteHTMLImage;
entry->magick=IsHTML;
entry->adjoin=False;
entry->description=
AllocateString("Hypertext Markup Language and a client-side image map");
entry->module=AllocateString("HTML");
RegisterMagickInfo(entry);
entry=SetMagickInfo("HTML");
entry->encoder=WriteHTMLImage;
entry->magick=IsHTML;
entry->adjoin=False;
entry->description=
AllocateString("Hypertext Markup Language and a client-side image map");
RegisterMagickInfo(entry);
entry=SetMagickInfo("SHTML");
entry->encoder=WriteHTMLImage;
entry->magick=IsHTML;
entry->adjoin=False;
entry->description=
AllocateString("Hypertext Markup Language and a client-side image map");
entry->module=AllocateString("HTML");
RegisterMagickInfo(entry);
}
/*
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% %
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% U n r e g i s t e r H T M L I m a g e %
% %
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% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method UnregisterHTMLImage removes format registrations made by the
% HTML module from the list of supported formats.
%
% The format of the UnregisterHTMLImage method is:
%
% UnregisterHTMLImage(void)
%
*/
ModuleExport void UnregisterHTMLImage(void)
{
UnregisterMagickInfo("HTM");
UnregisterMagickInfo("HTML");
UnregisterMagickInfo("SHTML");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
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% W r i t e H T M L I m a g e %
% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method WriteHTMLImage writes an image in the HTML encoded image format.
%
% The format of the WriteHTMLImage method is:
%
% unsigned int WriteHTMLImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o status: Method WriteHTMLImage return True if the image is written.
% False is returned is there is a memory shortage or if the image file
% fails to write.
%
% o image_info: Specifies a pointer to an ImageInfo structure.
%
% o image: A pointer to a Image structure.
%
%
*/
static unsigned int WriteHTMLImage(const ImageInfo *image_info,Image *image)
{
char
basename[MaxTextExtent],
buffer[MaxTextExtent],
filename[MaxTextExtent],
mapname[MaxTextExtent],
url[MaxTextExtent];
Image
*next;
ImageInfo
*clone_info;
int
x,
y;
register char
*p;
unsigned int
height,
status,
width;
/*
Open image.
*/
status=OpenBlob(image_info,image,WriteBinaryType);
if (status == False)
ThrowWriterException(FileOpenWarning,"Unable to open file",image);
CloseBlob(image);
TransformRGBImage(image,RGBColorspace);
*url='\0';
if ((LocaleCompare(image_info->magick,"FTP") == 0) ||
(LocaleCompare(image_info->magick,"HTTP") == 0))
{
/*
Extract URL base from filename.
*/
p=strrchr(image->filename,'/');
if (p)
{
p++;
(void) strcpy(url,image_info->magick);
(void) strcat(url,":");
url[Extent(url)+p-image->filename]='\0';
(void) strncat(url,image->filename,p-image->filename);
(void) strcpy(image->filename,p);
}
}
/*
Refer to image map file.
*/
(void) strcpy(filename,image->filename);
AppendImageFormat("map",filename);
GetPathComponent(filename,BasePath,basename);
(void) strcpy(mapname,basename);
(void) strcpy(image->filename,image_info->filename);
(void) strcpy(filename,image->filename);
clone_info=CloneImageInfo(image_info);
if (clone_info == (ImageInfo *) NULL)
ThrowWriterException(FileOpenWarning,"Unable to allocate memory",image);
clone_info->adjoin=True;
status=True;
if (LocaleCompare(image_info->magick,"SHTML") != 0)
{
ImageAttribute
*attribute;
/*
Open output image file.
*/
status=OpenBlob(image_info,image,WriteBinaryType);
if (status == False)
ThrowWriterException(FileOpenWarning,"Unable to open file",image);
/*
Write the HTML image file.
*/
(void) WriteBlobString(image,"<html version=\"2.0\">\n");
(void) WriteBlobString(image,"<head>\n");
attribute=GetImageAttribute(image,"Label");
if (attribute != (ImageAttribute *) NULL)
FormatString(buffer,"<title>%.1024s</title>\n",attribute->value);
else
{
GetPathComponent(filename,BasePath,basename);
FormatString(buffer,"<title>%.1024s</title>\n",basename);
}
(void) WriteBlobString(image,buffer);
(void) WriteBlobString(image,"</head>\n");
(void) WriteBlobString(image,"<body>\n");
(void) WriteBlobString(image,"<center>\n");
FormatString(buffer,"<h1>%.1024s</h1>\n",image->filename);
(void) WriteBlobString(image,buffer);
(void) WriteBlobString(image,"<br><br>\n");
(void) strcpy(filename,image->filename);
AppendImageFormat("gif",filename);
FormatString(buffer,
"<img ismap usemap=#%.1024s src=\"%.1024s\" border=0>\n",
mapname,filename);
(void) WriteBlobString(image,buffer);
/*
Determine the size and location of each image tile.
*/
width=image->columns;
height=image->rows;
x=0;
y=0;
if (image->montage != (char *) NULL)
(void) ParseGeometry(image->montage,&x,&y,&width,&height);
/*
Write an image map.
*/
FormatString(buffer,"<map name=\"%.1024s\">\n",mapname);
(void) WriteBlobString(image,buffer);
FormatString(buffer," <area href=\"%.1024s",url);
(void) WriteBlobString(image,buffer);
if (image->directory == (char *) NULL)
{
FormatString(buffer,"%.1024s\" shape=rect coords=0,0,%u,%u>\n",
image->filename,width-1,height-1);
(void) WriteBlobString(image,buffer);
}
else
for (p=image->directory; *p != '\0'; p++)
if (*p != '\n')
(void) WriteBlobByte(image,*p);
else
{
FormatString(buffer,"\" shape=rect coords=%d,%d,%d,%d>\n",
x,y,x+(int) width-1,y+(int) height-1);
(void) WriteBlobString(image,buffer);
if (*(p+1) != '\0')
{
FormatString(buffer," <area href=%.1024s\"",url);
(void) WriteBlobString(image,buffer);
}
x+=width;
if (x >= (int) image->columns)
{
x=0;
y+=height;
}
}
(void) WriteBlobString(image,"</map>\n");
if (image->montage != (char *) NULL)
TransparentImage(image,GetOnePixel(image,0,0),TransparentOpacity);
(void) strcpy(filename,image->filename);
(void) WriteBlobString(image,"</center>\n");
(void) WriteBlobString(image,"</body>\n");
status=WriteBlobString(image,"</html>\n");
CloseBlob(image);
/*
Write the image as transparent GIF.
*/
(void) strcpy(image->filename,filename);
AppendImageFormat("gif",image->filename);
next=image->next;
image->next=(Image *) NULL;
(void) strcpy(image->magick,"GIF");
status|=WriteImage(clone_info,image);
image->next=next;
/*
Determine image map filename.
*/
(void) strcpy(image->filename,filename);
for (p=filename+Extent(filename)-1; p > (filename+1); p--)
if (*p == '.')
{
(void) strncpy(image->filename,filename,p-filename);
image->filename[p-filename]='\0';
break;
}
(void) strcat(image->filename,"_map.shtml");
}
/*
Open image map.
*/
status=OpenBlob(clone_info,image,WriteBinaryType);
if (status == False)
ThrowWriterException(FileOpenWarning,"Unable to open file",image);
DestroyImageInfo(clone_info);
/*
Determine the size and location of each image tile.
*/
width=image->columns;
height=image->rows;
x=0;
y=0;
if (image->montage != (char *) NULL)
(void) ParseGeometry(image->montage,&x,&y,&width,&height);
/*
Write an image map.
*/
FormatString(buffer,"<map name=\"%.1024s\">\n",mapname);
(void) WriteBlobString(image,buffer);
FormatString(buffer," <area href=\"%.1024s",url);
(void) WriteBlobString(image,buffer);
if (image->directory == (char *) NULL)
{
FormatString(buffer,"%.1024s\" shape=rect coords=0,0,%u,%u>\n",
image->filename,width-1,height-1);
(void) WriteBlobString(image,buffer);
}
else
for (p=image->directory; *p != '\0'; p++)
if (*p != '\n')
(void) WriteBlobByte(image,*p);
else
{
FormatString(buffer," shape=rect coords=%d,%d,%d,%d>\n",x,y,
x+(int) width-1,y+(int) height-1);
(void) WriteBlobString(image,buffer);
if (*(p+1) != '\0')
{
FormatString(buffer," <area href=%.1024s\"",url);
(void) WriteBlobString(image,buffer);
}
x+=width;
if (x >= (int) image->columns)
{
x=0;
y+=height;
}
}
(void) WriteBlobString(image,"</map>\n");
CloseBlob(image);
(void) strcpy(image->filename,filename);
return(status);
}
