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26 <div id="page-content">
27 <div id="preamble"><h1>Apache Module mod_imagemap</h1>
29 <p><span>Available Languages: </span><a href="../en/mod/mod_imagemap.html" title="English"> en </a> |
30 <a href="../ko/mod/mod_imagemap.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
32 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Server-side imagemap processing</td></tr>
33 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Base</td></tr>
34 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>imagemap_module</td></tr>
35 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_imagemap.c</td></tr></table>
38 <p>This module processes <code>.map</code> files, thereby
39 replacing the functionality of the <code>imagemap</code> CGI
40 program. Any directory or document type configured to use the
41 handler <code>imap-file</code> (using either
42 <code class="directive"><a href="../mod/mod_mime.html#addhandler">AddHandler</a></code> or
43 <code class="directive"><a href="../mod/core.html#sethandler">SetHandler</a></code>)
44 will be processed by this module.</p>
46 <p>The following directive will activate files ending with
47 <code>.map</code> as imagemap files:</p>
49 <pre class="prettyprint lang-config">AddHandler imap-file map</pre>
52 <p>Note that the following is still supported:</p>
54 <pre class="prettyprint lang-config">AddType application/x-httpd-imap map</pre>
57 <p>However, we are trying to phase out "magic MIME types" so we
58 are deprecating this method.</p>
60 <div id="quickview"><h3>Topics</h3>
62 <li><img alt="" src="../images/down.gif" /> <a href="#features">New Features</a></li>
63 <li><img alt="" src="../images/down.gif" /> <a href="#imapfile">Imagemap File</a></li>
64 <li><img alt="" src="../images/down.gif" /> <a href="#example">Example Mapfile</a></li>
65 <li><img alt="" src="../images/down.gif" /> <a href="#referencing">Referencing your mapfile</a></li>
66 </ul><h3 class="directives">Directives</h3>
68 <li><img alt="" src="../images/down.gif" /> <a href="#imapbase">ImapBase</a></li>
69 <li><img alt="" src="../images/down.gif" /> <a href="#imapdefault">ImapDefault</a></li>
70 <li><img alt="" src="../images/down.gif" /> <a href="#imapmenu">ImapMenu</a></li>
72 <h3>Bugfix checklist:</h3><ul class="seealso"><li><a href="http://httpd.apache.org/dev/dist/CHANGES_2.4">Httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity">Open bugs</a></li></ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div>
73 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
75 <h2><a name="features" id="features">New Features</a></h2>
77 <p>The imagemap module adds some new features that were not
78 possible with previously distributed imagemap programs.</p>
81 <li>URL references relative to the Referer: information.</li>
83 <li>Default <code><base></code> assignment through a new map
84 directive <code>base</code>.</li>
86 <li>No need for <code>imagemap.conf</code> file.</li>
88 <li>Point references.</li>
90 <li>Configurable generation of imagemap menus.</li>
92 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
94 <h2><a name="imapfile" id="imapfile">Imagemap File</a></h2>
96 <p>The lines in the imagemap files can have one of several
99 <div class="example"><p><code>
100 directive value [<var>x</var>,<var>y</var> ...]<br />
101 directive value "<var>Menu text</var>" [<var>x</var>,<var>y</var>
103 directive value <var>x</var>,<var>y</var> ... "<var>Menu text</var>"
106 <p>The directive is one of <code>base</code>,
107 <code>default</code>, <code>poly</code>, <code>circle</code>,
108 <code>rect</code>, or <code>point</code>. The value is an
109 absolute or relative URL, or one of the special values listed
110 below. The coordinates are <code><var>x</var>,<var>y</var></code>
111 pairs separated by whitespace. The quoted text is used as the text of
112 the link if a imagemap menu is generated. Lines beginning with '#' are
115 <h3><a name="imapfile.directives" id="imapfile.directives">Imagemap File Directives</a></h3>
116 <p>There are six directives allowed in the imagemap file. The
117 directives can come in any order, but are processed in the
118 order they are found in the imagemap file.</p>
121 <dt><code>base</code> Directive</dt>
123 <dd><p>Has the effect of <code><base href="<var>value</var>">
124 </code>. The non-absolute URLs of the map-file are taken relative
125 to this value. The <code>base</code> directive overrides
126 <code class="directive"><a href="#imapbase">ImapBase</a></code> as set in a
127 <code>.htaccess</code> file or in the server configuration files.
128 In the absence of an <code class="directive">ImapBase</code> configuration
129 directive, <code>base</code> defaults to
130 <code>http://server_name/</code>.</p>
131 <p><code>base_uri</code> is synonymous with <code>base</code>.
132 Note that a trailing slash on the URL is significant.</p></dd>
134 <dt><code>default</code> Directive</dt>
136 <dd>The action taken if the coordinates given do not fit any
137 of the <code>poly</code>, <code>circle</code> or
138 <code>rect</code> directives, and there are no
139 <code>point</code> directives. Defaults to <code>nocontent</code>
140 in the absence of an <code class="directive"><a href="#imapdefault">ImapDefault</a></code> configuration setting, causing a status
141 code of <code>204 No Content</code> to be returned. The client
142 should keep the same page displayed.</dd>
144 <dt><code>poly</code> Directive</dt>
146 <dd>Takes three to one-hundred points, and is obeyed if the
147 user selected coordinates fall within the polygon defined by
150 <dt><code>circle</code></dt>
152 <dd>Takes the center coordinates of a circle and a point on
153 the circle. Is obeyed if the user selected point is with the
156 <dt><code>rect</code> Directive</dt>
158 <dd>Takes the coordinates of two opposing corners of a
159 rectangle. Obeyed if the point selected is within this
162 <dt><code>point</code> Directive</dt>
164 <dd>Takes a single point. The point directive closest to the
165 user selected point is obeyed if no other directives are
166 satisfied. Note that <code>default</code> will not be
167 followed if a <code>point</code> directive is present and
168 valid coordinates are given.</dd>
172 <h3><a name="imapfile.values" id="imapfile.values">Values</a></h3>
174 <p>The values for each of the directives can be any of the
180 <dd><p>The URL can be relative or absolute URL. Relative URLs
181 can contain '..' syntax and will be resolved relative to the
182 <code>base</code> value.</p>
183 <p><code>base</code> itself will not be resolved according to the
184 current value. A statement <code>base mailto:</code> will
185 work properly, though.</p></dd>
187 <dt><code>map</code></dt>
189 <dd>Equivalent to the URL of the imagemap file itself. No
190 coordinates are sent with this, so a menu will be generated
191 unless <code class="directive"><a href="#imapmenu">ImapMenu</a></code> is set to
192 <code>none</code>.</dd>
194 <dt><code>menu</code></dt>
195 <dd>Synonymous with <code>map</code>.</dd>
197 <dt><code>referer</code></dt>
199 <dd>Equivalent to the URL of the referring document. Defaults
200 to <code>http://servername/</code> if no <code>Referer:</code>
201 header was present.</dd>
203 <dt><code>nocontent</code></dt>
205 <dd>Sends a status code of <code>204 No Content</code>,
206 telling the client to keep the same page displayed. Valid for
207 all but <code>base</code>.</dd>
209 <dt><code>error</code></dt>
211 <dd>Fails with a <code>500 Server Error</code>. Valid for all
212 but <code>base</code>, but sort of silly for anything but
213 <code>default</code>.</dd>
217 <h3><a name="imapfile.coords" id="imapfile.coords">Coordinates</a></h3>
220 <dt><code>0,0 200,200</code></dt>
222 <dd>A coordinate consists of an <var>x</var> and a <var>y</var>
223 value separated by a comma. The coordinates are separated
224 from each other by whitespace. To accommodate the way Lynx
225 handles imagemaps, should a user select the coordinate
226 <code>0,0</code>, it is as if no coordinate had been
232 <h3><a name="imapfile.quotedtext" id="imapfile.quotedtext">Quoted Text</a></h3>
235 <dt><code>"<var>Menu Text</var>"</code></dt>
237 <dd><p>After the value or after the coordinates, the line
238 optionally may contain text within double quotes. This string
239 is used as the text for the link if a menu is
242 <div class="example"><p><code>
243 <a href="http://example.com/"><var>Menu text</var></a>
246 <p>If no quoted text is present, the name of the link will be
247 used as the text:</p>
249 <div class="example"><p><code>
250 <a href="http://example.com/">http://example.com</a>
253 <p>If you want to use double quotes within this text, you have to
254 write them as <code>&quot;</code>.</p></dd>
258 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
259 <div class="section">
260 <h2><a name="example" id="example">Example Mapfile</a></h2>
262 <div class="example"><p><code>
263 #Comments are printed in a 'formatted' or 'semiformatted' menu.<br />
264 #And can contain html tags. <hr><br />
266 poly map "Could I have a menu, please?" 0,0 0,10 10,10 10,0<br />
267 rect .. 0,0 77,27 "the directory of the referer"<br />
268 circle http://www.inetnebr.example.com/lincoln/feedback/ 195,0 305,27<br />
269 rect another_file "in same directory as referer" 306,0 419,27<br />
270 point http://www.zyzzyva.example.com/ 100,100<br />
271 point http://www.tripod.example.com/ 200,200<br />
272 rect mailto:nate@tripod.example.com 100,150 200,0 "Bugs?"<br />
275 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
276 <div class="section">
277 <h2><a name="referencing" id="referencing">Referencing your mapfile</a></h2>
279 <div class="example"><h3>HTML example</h3><p><code>
280 <a href="/maps/imagemap1.map"><br />
281 <span class="indent">
282 <img ismap src="/images/imagemap1.gif"><br />
287 <div class="example"><h3>XHTML example</h3><p><code>
288 <a href="/maps/imagemap1.map"><br />
289 <span class="indent">
290 <img ismap="ismap" src="/images/imagemap1.gif" /><br />
296 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
297 <div class="directive-section"><h2><a name="ImapBase" id="ImapBase">ImapBase</a> <a name="imapbase" id="imapbase">Directive</a></h2>
298 <table class="directive">
299 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Default <code>base</code> for imagemap files</td></tr>
300 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ImapBase map|referer|<var>URL</var></code></td></tr>
301 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ImapBase http://servername/</code></td></tr>
302 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
303 <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Indexes</td></tr>
304 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
305 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_imagemap</td></tr>
307 <p>The <code class="directive">ImapBase</code> directive sets the default
308 <code>base</code> used in the imagemap files. Its value is
309 overridden by a <code>base</code> directive within the imagemap
310 file. If not present, the <code>base</code> defaults to
311 <code>http://<var>servername</var>/</code>.</p>
315 <li><code class="directive"><a href="../mod/core.html#usecanonicalname">UseCanonicalName</a></code></li>
318 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
319 <div class="directive-section"><h2><a name="ImapDefault" id="ImapDefault">ImapDefault</a> <a name="imapdefault" id="imapdefault">Directive</a></h2>
320 <table class="directive">
321 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Default action when an imagemap is called with coordinates
322 that are not explicitly mapped</td></tr>
323 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ImapDefault error|nocontent|map|referer|<var>URL</var></code></td></tr>
324 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ImapDefault nocontent</code></td></tr>
325 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
326 <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Indexes</td></tr>
327 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
328 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_imagemap</td></tr>
330 <p>The <code class="directive">ImapDefault</code> directive sets the default
331 <code>default</code> used in the imagemap files. Its value is
332 overridden by a <code>default</code> directive within the
333 imagemap file. If not present, the <code>default</code> action
334 is <code>nocontent</code>, which means that a <code>204 No
335 Content</code> is sent to the client. In this case, the client
336 should continue to display the original page.</p>
339 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
340 <div class="directive-section"><h2><a name="ImapMenu" id="ImapMenu">ImapMenu</a> <a name="imapmenu" id="imapmenu">Directive</a></h2>
341 <table class="directive">
342 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Action if no coordinates are given when calling
343 an imagemap</td></tr>
344 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ImapMenu none|formatted|semiformatted|unformatted</code></td></tr>
345 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ImapMenu formatted</code></td></tr>
346 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
347 <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Indexes</td></tr>
348 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
349 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_imagemap</td></tr>
351 <p>The <code class="directive">ImapMenu</code> directive determines the
352 action taken if an imagemap file is called without valid
356 <dt><code>none</code></dt>
357 <dd>If ImapMenu is <code>none</code>, no menu is generated,
358 and the <code>default</code> action is performed.</dd>
360 <dt><code>formatted</code></dt>
361 <dd>A <code>formatted</code> menu is the simplest menu.
362 Comments in the imagemap file are ignored. A level one header
363 is printed, then an hrule, then the links each on a separate
364 line. The menu has a consistent, plain look close to that of
365 a directory listing.</dd>
367 <dt><code>semiformatted</code></dt>
368 <dd>In the <code>semiformatted</code> menu, comments are
369 printed where they occur in the imagemap file. Blank lines
370 are turned into HTML breaks. No header or hrule is printed,
371 but otherwise the menu is the same as a
372 <code>formatted</code> menu.</dd>
374 <dt><code>unformatted</code></dt>
375 <dd>Comments are printed, blank lines are ignored. Nothing is
376 printed that does not appear in the imagemap file. All breaks
377 and headers must be included as comments in the imagemap
378 file. This gives you the most flexibility over the appearance
379 of your menus, but requires you to treat your map files as
380 HTML instead of plaintext.</dd>
385 <div class="bottomlang">
386 <p><span>Available Languages: </span><a href="../en/mod/mod_imagemap.html" title="English"> en </a> |
387 <a href="../ko/mod/mod_imagemap.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
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