/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- IsHTML
- RegisterHTMLImage
- UnregisterHTMLImage
- WriteHTMLImage
/*
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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 %
% %
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% Write A Client-Side Image Map Using %
% Image Montage & Directory Information. %
% %
% Software Design %
% John Cristy %
% July 1992 %
% %
% %
% Copyright 1999-2011 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 %
% %
% http://www.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. %
% %
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%
%
*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/color-private.h"
#include "magick/colorspace.h"
#include "magick/constitute.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/geometry.h"
#include "magick/list.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/paint.h"
#include "magick/property.h"
#include "magick/quantum-private.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
#include "magick/utility.h"
/*
Forward declarations.
*/
static MagickBooleanType
WriteHTMLImage(const ImageInfo *,Image *);
/*
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% I s H T M L %
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% IsHTML() returns MagickTrue if the image format type, identified by the
% magick string, is HTML.
%
% The format of the IsHTML method is:
%
% MagickBooleanType IsHTML(const unsigned char *magick,const size_t length)
%
% A description of each parameter follows:
%
% o magick: compare image format pattern against these bytes.
%
% o length: Specifies the length of the magick string.
%
*/
static MagickBooleanType IsHTML(const unsigned char *magick,const size_t length)
{
if (length < 5)
return(MagickFalse);
if (LocaleNCompare((char *) magick,"<html",5) == 0)
return(MagickTrue);
return(MagickFalse);
}
/*
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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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% RegisterHTMLImage() adds properties for the HTML image format to
% the list of supported formats. The properties 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:
%
% size_t RegisterHTMLImage(void)
%
*/
ModuleExport size_t RegisterHTMLImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("HTM");
entry->encoder=(EncodeImageHandler *) WriteHTMLImage;
entry->magick=(IsImageFormatHandler *) IsHTML;
entry->adjoin=MagickFalse;
entry->description=ConstantString(
"Hypertext Markup Language and a client-side image map");
entry->module=ConstantString("HTML");
(void) RegisterMagickInfo(entry);
entry=SetMagickInfo("HTML");
entry->encoder=(EncodeImageHandler *) WriteHTMLImage;
entry->magick=(IsImageFormatHandler *) IsHTML;
entry->adjoin=MagickFalse;
entry->description=ConstantString(
"Hypertext Markup Language and a client-side image map");
entry->module=ConstantString("HTML");
(void) RegisterMagickInfo(entry);
entry=SetMagickInfo("SHTML");
entry->encoder=(EncodeImageHandler *) WriteHTMLImage;
entry->magick=(IsImageFormatHandler *) IsHTML;
entry->adjoin=MagickFalse;
entry->description=ConstantString(
"Hypertext Markup Language and a client-side image map");
entry->module=ConstantString("HTML");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
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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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% 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)
{
(void) UnregisterMagickInfo("HTM");
(void) UnregisterMagickInfo("HTML");
(void) UnregisterMagickInfo("SHTML");
}
/*
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% W r i t e H T M L I m a g e %
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% WriteHTMLImage() writes an image in the HTML encoded image format.
%
% The format of the WriteHTMLImage method is:
%
% MagickBooleanType WriteHTMLImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
%
*/
static MagickBooleanType WriteHTMLImage(const ImageInfo *image_info,
Image *image)
{
char
basename[MaxTextExtent],
buffer[MaxTextExtent],
filename[MaxTextExtent],
mapname[MaxTextExtent],
url[MaxTextExtent];
Image
*next;
ImageInfo
*write_info;
MagickBooleanType
status;
RectangleInfo
geometry;
register char
*p;
/*
Open image.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
(void) CloseBlob(image);
if (image->colorspace != RGBColorspace)
(void) TransformImageColorspace(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) CopyMagickString(url,image_info->magick,MaxTextExtent);
(void) ConcatenateMagickString(url,":",MaxTextExtent);
url[strlen(url)+p-image->filename]='\0';
(void) ConcatenateMagickString(url,image->filename,
p-image->filename+2);
(void) CopyMagickString(image->filename,p,MaxTextExtent);
}
}
/*
Refer to image map file.
*/
(void) CopyMagickString(filename,image->filename,MaxTextExtent);
AppendImageFormat("map",filename);
GetPathComponent(filename,BasePath,basename);
(void) CopyMagickString(mapname,basename,MaxTextExtent);
(void) CopyMagickString(image->filename,image_info->filename,MaxTextExtent);
(void) CopyMagickString(filename,image->filename,MaxTextExtent);
write_info=CloneImageInfo(image_info);
write_info->adjoin=MagickTrue;
status=MagickTrue;
if (LocaleCompare(image_info->magick,"SHTML") != 0)
{
const char
*value;
/*
Open output image file.
*/
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
/*
Write the HTML image file.
*/
(void) WriteBlobString(image,"<?xml version=\"1.0\" "
"encoding=\"US-ASCII\"?>\n");
(void) WriteBlobString(image,"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML "
"1.0 Strict//EN\" "
"\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n");
(void) WriteBlobString(image,"<html>\n");
(void) WriteBlobString(image,"<head>\n");
value=GetImageProperty(image,"label");
if (value != (const char *) NULL)
(void) FormatMagickString(buffer,MaxTextExtent,"<title>%s</title>\n",
value);
else
{
GetPathComponent(filename,BasePath,basename);
(void) FormatMagickString(buffer,MaxTextExtent,
"<title>%s</title>\n",basename);
}
(void) WriteBlobString(image,buffer);
(void) WriteBlobString(image,"</head>\n");
(void) WriteBlobString(image,"<body style=\"text-align: center;\">\n");
(void) FormatMagickString(buffer,MaxTextExtent,"<h1>%s</h1>\n",
image->filename);
(void) WriteBlobString(image,buffer);
(void) WriteBlobString(image,"<div>\n");
(void) CopyMagickString(filename,image->filename,MaxTextExtent);
AppendImageFormat("png",filename);
(void) FormatMagickString(buffer,MaxTextExtent,"<img usemap=\"#%s\" "
"src=\"%s\" style=\"border: 0;\" alt=\"Image map\" />\n",mapname,
filename);
(void) WriteBlobString(image,buffer);
/*
Determine the size and location of each image tile.
*/
SetGeometry(image,&geometry);
if (image->montage != (char *) NULL)
(void) ParseAbsoluteGeometry(image->montage,&geometry);
/*
Write an image map.
*/
(void) FormatMagickString(buffer,MaxTextExtent,
"<map id=\"%s\" name=\"%s\">\n",mapname,mapname);
(void) WriteBlobString(image,buffer);
(void) FormatMagickString(buffer,MaxTextExtent," <area href=\"%s",
url);
(void) WriteBlobString(image,buffer);
if (image->directory == (char *) NULL)
{
(void) FormatMagickString(buffer,MaxTextExtent,
"%s\" shape=\"rect\" coords=\"0,0,%.20g,%.20g\" alt=\"\" />\n",
image->filename,(double) geometry.width-1,(double) geometry.height-
1);
(void) WriteBlobString(image,buffer);
}
else
for (p=image->directory; *p != '\0'; p++)
if (*p != '\n')
(void) WriteBlobByte(image,(unsigned char) *p);
else
{
(void) FormatMagickString(buffer,MaxTextExtent,
"\" shape=\"rect\" coords=\"%.20g,%.20g,%.20g,%.20g\" alt=\"\" />\n",
(double) geometry.x,(double) geometry.y,(double) (geometry.x+
geometry.width-1),(double) (geometry.y+geometry.height-1));
(void) WriteBlobString(image,buffer);
if (*(p+1) != '\0')
{
(void) FormatMagickString(buffer,MaxTextExtent,
" <area href=%s\"",url);
(void) WriteBlobString(image,buffer);
}
geometry.x+=(ssize_t) geometry.width;
if ((geometry.x+4) >= (ssize_t) image->columns)
{
geometry.x=0;
geometry.y+=(ssize_t) geometry.height;
}
}
(void) WriteBlobString(image,"</map>\n");
(void) CopyMagickString(filename,image->filename,MaxTextExtent);
(void) WriteBlobString(image,"</div>\n");
(void) WriteBlobString(image,"</body>\n");
(void) WriteBlobString(image,"</html>\n");
(void) CloseBlob(image);
/*
Write the image as PNG.
*/
(void) CopyMagickString(image->filename,filename,MaxTextExtent);
AppendImageFormat("png",image->filename);
next=GetNextImageInList(image);
image->next=NewImageList();
(void) CopyMagickString(image->magick,"PNG",MaxTextExtent);
(void) WriteImage(write_info,image);
image->next=next;
/*
Determine image map filename.
*/
GetPathComponent(image->filename,BasePath,filename);
(void) ConcatenateMagickString(filename,"_map.shtml",MaxTextExtent);
(void) CopyMagickString(image->filename,filename,MaxTextExtent);
}
/*
Open image map.
*/
status=OpenBlob(write_info,image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
write_info=DestroyImageInfo(write_info);
/*
Determine the size and location of each image tile.
*/
SetGeometry(image,&geometry);
if (image->montage != (char *) NULL)
(void) ParseAbsoluteGeometry(image->montage,&geometry);
/*
Write an image map.
*/
(void) FormatMagickString(buffer,MaxTextExtent,
"<map id=\"%s\" name=\"%s\">\n",mapname,mapname);
(void) WriteBlobString(image,buffer);
(void) FormatMagickString(buffer,MaxTextExtent," <area href=\"%s",url);
(void) WriteBlobString(image,buffer);
if (image->directory == (char *) NULL)
{
(void) FormatMagickString(buffer,MaxTextExtent,
"%s\" shape=\"rect\" coords=\"0,0,%.20g,%.20g\" alt=\"\" />\n",
image->filename,(double) geometry.width-1,(double) geometry.height-1);
(void) WriteBlobString(image,buffer);
}
else
for (p=image->directory; *p != '\0'; p++)
if (*p != '\n')
(void) WriteBlobByte(image,(unsigned char) *p);
else
{
(void) FormatMagickString(buffer,MaxTextExtent,
"\" shape=\"rect\" coords=\"%.20g,%.20g,%.20g,%.20g\" alt=\"\" />\n",
(double) geometry.x,(double) geometry.y,geometry.x+(double)
geometry.width-1,geometry.y+(double) geometry.height-1);
(void) WriteBlobString(image,buffer);
if (*(p+1) != '\0')
{
(void) FormatMagickString(buffer,MaxTextExtent,
" <area href=%s\"",url);
(void) WriteBlobString(image,buffer);
}
geometry.x+=(ssize_t) geometry.width;
if ((geometry.x+4) >= (ssize_t) image->columns)
{
geometry.x=0;
geometry.y+=(ssize_t) geometry.height;
}
}
(void) WriteBlobString(image,"</map>\n");
(void) CloseBlob(image);
(void) CopyMagickString(image->filename,filename,MaxTextExtent);
return(status);
}