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gerrit-public.fairphone.software / platform / external / ImageMagick / cb03ed600403399203b527e47d44dab620e4e6c5 / . / coders / html.c
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cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]1/*
2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3% %
4% %
5% %
6% H H TTTTT M M L %
7% H H T MM MM L %
8% HHHHH T M M M L %
9% H H T M M L %
10% H H T M M LLLLL %
11% %
12% %
13% Write A Client-Side Image Map Using %
14% Image Montage & Directory Information. %
15% %
16% Software Design %
17% John Cristy %
18% July 1992 %
19% %
20% %
21% Copyright 1999-2009 ImageMagick Studio LLC, a non-profit organization %
22% dedicated to making software imaging solutions freely available. %
23% %
24% You may not use this file except in compliance with the License. You may %
25% obtain a copy of the License at %
26% %
27% http://www.imagemagick.org/script/license.php %
28% %
29% Unless required by applicable law or agreed to in writing, software %
30% distributed under the License is distributed on an "AS IS" BASIS, %
31% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
32% See the License for the specific language governing permissions and %
33% limitations under the License. %
34% %
35%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36%
37%
38*/
39
40/*
41 Include declarations.
42*/
43#include "magick/studio.h"
44#include "magick/blob.h"
45#include "magick/blob-private.h"
46#include "magick/color-private.h"
47#include "magick/colorspace.h"
48#include "magick/constitute.h"
49#include "magick/exception.h"
50#include "magick/exception-private.h"
51#include "magick/geometry.h"
52#include "magick/list.h"
53#include "magick/magick.h"
54#include "magick/memory_.h"
55#include "magick/paint.h"
56#include "magick/property.h"
57#include "magick/quantum-private.h"
58#include "magick/static.h"
59#include "magick/string_.h"
60#include "magick/module.h"
61#include "magick/utility.h"
62
63/*
64 Forward declarations.
65*/
66static MagickBooleanType
67 WriteHTMLImage(const ImageInfo *,Image *);
68
69/*
70%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
71% %
72% %
73% %
74% I s H T M L %
75% %
76% %
77% %
78%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
79%
80% IsHTML() returns MagickTrue if the image format type, identified by the
81% magick string, is HTML.
82%
83% The format of the IsHTML method is:
84%
85% MagickBooleanType IsHTML(const unsigned char *magick,const size_t length)
86%
87% A description of each parameter follows:
88%
89% o magick: compare image format pattern against these bytes.
90%
91% o length: Specifies the length of the magick string.
92%
93*/
94static MagickBooleanType IsHTML(const unsigned char *magick,const size_t length)
95{
96 if (length < 5)
97 return(MagickFalse);
98 if (LocaleNCompare((char *) magick,"<html",5) == 0)
99 return(MagickTrue);
100 return(MagickFalse);
101}
102
103/*
104%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
105% %
106% %
107% %
108% R e g i s t e r H T M L I m a g e %
109% %
110% %
111% %
112%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
113%
114% RegisterHTMLImage() adds properties for the HTML image format to
115% the list of supported formats. The properties include the image format
116% tag, a method to read and/or write the format, whether the format
117% supports the saving of more than one frame to the same file or blob,
118% whether the format supports native in-memory I/O, and a brief
119% description of the format.
120%
121% The format of the RegisterHTMLImage method is:
122%
123% unsigned long RegisterHTMLImage(void)
124%
125*/
126ModuleExport unsigned long RegisterHTMLImage(void)
127{
128 MagickInfo
129 *entry;
130
131 entry=SetMagickInfo("HTM");
132 entry->encoder=(EncodeImageHandler *) WriteHTMLImage;
133 entry->magick=(IsImageFormatHandler *) IsHTML;
134 entry->adjoin=MagickFalse;
135 entry->description=ConstantString(
136 "Hypertext Markup Language and a client-side image map");
137 entry->module=ConstantString("HTML");
138 (void) RegisterMagickInfo(entry);
139 entry=SetMagickInfo("HTML");
140 entry->encoder=(EncodeImageHandler *) WriteHTMLImage;
141 entry->magick=(IsImageFormatHandler *) IsHTML;
142 entry->adjoin=MagickFalse;
143 entry->description=ConstantString(
144 "Hypertext Markup Language and a client-side image map");
145 entry->module=ConstantString("HTML");
146 (void) RegisterMagickInfo(entry);
147 entry=SetMagickInfo("SHTML");
148 entry->encoder=(EncodeImageHandler *) WriteHTMLImage;
149 entry->magick=(IsImageFormatHandler *) IsHTML;
150 entry->adjoin=MagickFalse;
151 entry->description=ConstantString(
152 "Hypertext Markup Language and a client-side image map");
153 entry->module=ConstantString("HTML");
154 (void) RegisterMagickInfo(entry);
155 return(MagickImageCoderSignature);
156}
157
158/*
159%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
160% %
161% %
162% %
163% U n r e g i s t e r H T M L I m a g e %
164% %
165% %
166% %
167%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
168%
169% UnregisterHTMLImage() removes format registrations made by the
170% HTML module from the list of supported formats.
171%
172% The format of the UnregisterHTMLImage method is:
173%
174% UnregisterHTMLImage(void)
175%
176*/
177ModuleExport void UnregisterHTMLImage(void)
178{
179 (void) UnregisterMagickInfo("HTM");
180 (void) UnregisterMagickInfo("HTML");
181 (void) UnregisterMagickInfo("SHTML");
182}
183
184/*
185%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
186% %
187% %
188% %
189% W r i t e H T M L I m a g e %
190% %
191% %
192% %
193%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
194%
195% WriteHTMLImage() writes an image in the HTML encoded image format.
196%
197% The format of the WriteHTMLImage method is:
198%
199% MagickBooleanType WriteHTMLImage(const ImageInfo *image_info,Image *image)
200%
201% A description of each parameter follows.
202%
203% o image_info: the image info.
204%
205% o image: The image.
206%
207%
208*/
209static MagickBooleanType WriteHTMLImage(const ImageInfo *image_info,
210 Image *image)
211{
212 char
213 basename[MaxTextExtent],
214 buffer[MaxTextExtent],
215 filename[MaxTextExtent],
216 mapname[MaxTextExtent],
217 url[MaxTextExtent];
218
219 Image
220 *next;
221
222 ImageInfo
223 *write_info;
224
225 MagickBooleanType
226 status;
227
228 RectangleInfo
229 geometry;
230
231 register char
232 *p;
233
234 /*
235 Open image.
236 */
237 assert(image_info != (const ImageInfo *) NULL);
238 assert(image_info->signature == MagickSignature);
239 assert(image != (Image *) NULL);
240 assert(image->signature == MagickSignature);
241 if (image->debug != MagickFalse)
242 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
243 image_info->filename);
244 status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
245 if (status == MagickFalse)
246 return(status);
247 (void) CloseBlob(image);
248 if (image->colorspace != RGBColorspace)
249 (void) TransformImageColorspace(image,RGBColorspace);
250 *url='\0';
251 if ((LocaleCompare(image_info->magick,"FTP") == 0) ||
252 (LocaleCompare(image_info->magick,"HTTP") == 0))
253 {
254 /*
255 Extract URL base from filename.
256 */
257 p=strrchr(image->filename,'/');
258 if (p)
259 {
260 p++;
261 (void) CopyMagickString(url,image_info->magick,MaxTextExtent);
262 (void) ConcatenateMagickString(url,":",MaxTextExtent);
263 url[strlen(url)+p-image->filename]='\0';
264 (void) ConcatenateMagickString(url,image->filename,
265 p-image->filename+2);
266 (void) CopyMagickString(image->filename,p,MaxTextExtent);
267 }
268 }
269 /*
270 Refer to image map file.
271 */
272 (void) CopyMagickString(filename,image->filename,MaxTextExtent);
273 AppendImageFormat("map",filename);
274 GetPathComponent(filename,BasePath,basename);
275 (void) CopyMagickString(mapname,basename,MaxTextExtent);
276 (void) CopyMagickString(image->filename,image_info->filename,MaxTextExtent);
277 (void) CopyMagickString(filename,image->filename,MaxTextExtent);
278 write_info=CloneImageInfo(image_info);
279 write_info->adjoin=MagickTrue;
280 status=MagickTrue;
281 if (LocaleCompare(image_info->magick,"SHTML") != 0)
282 {
283 const char
284 *value;
285
286 /*
287 Open output image file.
288 */
289 status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
290 if (status == MagickFalse)
291 return(status);
292 /*
293 Write the HTML image file.
294 */
295 (void) WriteBlobString(image,"<?xml version=\"1.0\" "
296 "encoding=\"US-ASCII\"?>\n");
297 (void) WriteBlobString(image,"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML "
298 "1.0 Strict//EN\" "
299 "\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n");
300 (void) WriteBlobString(image,"<html>\n");
301 (void) WriteBlobString(image,"<head>\n");
302 value=GetImageProperty(image,"label");
303 if (value != (const char *) NULL)
304 (void) FormatMagickString(buffer,MaxTextExtent,"<title>%s</title>\n",
305 value);
306 else
307 {
308 GetPathComponent(filename,BasePath,basename);
309 (void) FormatMagickString(buffer,MaxTextExtent,
310 "<title>%s</title>\n",basename);
311 }
312 (void) WriteBlobString(image,buffer);
313 (void) WriteBlobString(image,"</head>\n");
314 (void) WriteBlobString(image,"<body style=\"text-align: center;\">\n");
315 (void) FormatMagickString(buffer,MaxTextExtent,"<h1>%s</h1>\n",
316 image->filename);
317 (void) WriteBlobString(image,buffer);
318 (void) WriteBlobString(image,"<div>\n");
319 (void) CopyMagickString(filename,image->filename,MaxTextExtent);
320 AppendImageFormat("png",filename);
321 (void) FormatMagickString(buffer,MaxTextExtent,"<img usemap=\"#%s\" "
322 "src=\"%s\" style=\"border: 0;\" alt=\"Image map\" />\n",mapname,
323 filename);
324 (void) WriteBlobString(image,buffer);
325 /*
326 Determine the size and location of each image tile.
327 */
328 SetGeometry(image,&geometry);
329 if (image->montage != (char *) NULL)
330 (void) ParseAbsoluteGeometry(image->montage,&geometry);
331 /*
332 Write an image map.
333 */
334 (void) FormatMagickString(buffer,MaxTextExtent,
335 "<map id=\"%s\" name=\"%s\">\n",mapname,mapname);
336 (void) WriteBlobString(image,buffer);
337 (void) FormatMagickString(buffer,MaxTextExtent," <area href=\"%s",
338 url);
339 (void) WriteBlobString(image,buffer);
340 if (image->directory == (char *) NULL)
341 {
342 (void) FormatMagickString(buffer,MaxTextExtent,
343 "%s\" shape=\"rect\" coords=\"0,0,%lu,%lu\" alt=\"\" />\n",
344 image->filename,geometry.width-1,geometry.height-1);
345 (void) WriteBlobString(image,buffer);
346 }
347 else
348 for (p=image->directory; *p != '\0'; p++)
349 if (*p != '\n')
350 (void) WriteBlobByte(image,(unsigned char) *p);
351 else
352 {
353 (void) FormatMagickString(buffer,MaxTextExtent,
354 "\" shape=\"rect\" coords=\"%ld,%ld,%ld,%ld\" alt=\"\" />\n",
355 geometry.x,geometry.y,geometry.x+(long) geometry.width-1,
356 geometry.y+(long) geometry.height-1);
357 (void) WriteBlobString(image,buffer);
358 if (*(p+1) != '\0')
359 {
360 (void) FormatMagickString(buffer,MaxTextExtent,
361 " <area href=%s\"",url);
362 (void) WriteBlobString(image,buffer);
363 }
364 geometry.x+=geometry.width;
365 if ((geometry.x+4) >= (long) image->columns)
366 {
367 geometry.x=0;
368 geometry.y+=geometry.height;
369 }
370 }
371 (void) WriteBlobString(image,"</map>\n");
372 (void) CopyMagickString(filename,image->filename,MaxTextExtent);
373 (void) WriteBlobString(image,"</div>\n");
374 (void) WriteBlobString(image,"</body>\n");
375 (void) WriteBlobString(image,"</html>\n");
376 (void) CloseBlob(image);
377 /*
378 Write the image as PNG.
379 */
380 (void) CopyMagickString(image->filename,filename,MaxTextExtent);
381 AppendImageFormat("png",image->filename);
382 next=GetNextImageInList(image);
383 image->next=NewImageList();
384 (void) CopyMagickString(image->magick,"PNG",MaxTextExtent);
385 (void) WriteImage(write_info,image);
386 image->next=next;
387 /*
388 Determine image map filename.
389 */
390 GetPathComponent(image->filename,BasePath,filename);
391 (void) ConcatenateMagickString(filename,"_map.shtml",MaxTextExtent);
392 (void) CopyMagickString(image->filename,filename,MaxTextExtent);
393 }
394 /*
395 Open image map.
396 */
397 status=OpenBlob(write_info,image,WriteBinaryBlobMode,&image->exception);
398 if (status == MagickFalse)
399 return(status);
400 write_info=DestroyImageInfo(write_info);
401 /*
402 Determine the size and location of each image tile.
403 */
404 SetGeometry(image,&geometry);
405 if (image->montage != (char *) NULL)
406 (void) ParseAbsoluteGeometry(image->montage,&geometry);
407 /*
408 Write an image map.
409 */
410 (void) FormatMagickString(buffer,MaxTextExtent,
411 "<map id=\"%s\" name=\"%s\">\n",mapname,mapname);
412 (void) WriteBlobString(image,buffer);
413 (void) FormatMagickString(buffer,MaxTextExtent," <area href=\"%s",url);
414 (void) WriteBlobString(image,buffer);
415 if (image->directory == (char *) NULL)
416 {
417 (void) FormatMagickString(buffer,MaxTextExtent,
418 "%s\" shape=\"rect\" coords=\"0,0,%lu,%lu\" alt=\"\" />\n",
419 image->filename,geometry.width-1,geometry.height-1);
420 (void) WriteBlobString(image,buffer);
421 }
422 else
423 for (p=image->directory; *p != '\0'; p++)
424 if (*p != '\n')
425 (void) WriteBlobByte(image,(unsigned char) *p);
426 else
427 {
428 (void) FormatMagickString(buffer,MaxTextExtent,
429 "\" shape=\"rect\" coords=\"%ld,%ld,%ld,%ld\" alt=\"\" />\n",
430 geometry.x,geometry.y,geometry.x+(long) geometry.width-1,
431 geometry.y+(long) geometry.height-1);
432 (void) WriteBlobString(image,buffer);
433 if (*(p+1) != '\0')
434 {
435 (void) FormatMagickString(buffer,MaxTextExtent,
436 " <area href=%s\"",url);
437 (void) WriteBlobString(image,buffer);
438 }
439 geometry.x+=geometry.width;
440 if ((geometry.x+4) >= (long) image->columns)
441 {
442 geometry.x=0;
443 geometry.y+=geometry.height;
444 }
445 }
446 (void) WriteBlobString(image,"</map>\n");
447 (void) CloseBlob(image);
448 (void) CopyMagickString(image->filename,filename,MaxTextExtent);
449 return(status);
450}