ImageMap

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An extension for client-side clickable image maps.

Syntax example

<imagemap>
Image:Foo.jpg|200px|picture of a foo
poly 131 45 213 41 210 110 127 109 [[Wichs]]
poly 104 126 105 171 269 162 267 124 [[Zipfel]]
rect 15 95 94 176   [[Krug]]
# A comment, this line is ignored
circle 57 57 20    [[Wappen]]
desc bottom-left
</imagemap>

Output of this example: <imagemap> Image:Foo.jpg|200px|picture of a foo poly 131 45 213 41 210 110 127 109 Wichs poly 104 126 105 171 269 162 267 124 Zipfel rect 15 95 94 176 Krug

  1. A comment, this line is ignored

circle 57 57 20 Wappen desc bottom-left </imagemap>

Syntax description

The contents of an <imagemap> tag consists of blank lines, comments (starting with #) and logical lines. The first logical line specifies the image to be displayed. This must be in the same format as an ordinary MediaWiki image link, except without the enclosing [[ and ]].

Further lines are split into tokens, separated by whitespace. The function of each line is determined by the first token in the line. All coordinates are according to the full-size image, not the visible image.

desc
Specifies the location of the image description link. May be either top-right, bottom-right, bottom-left, top-left or none. This puts a blue "i" icon in the specified corner, linking to the image description page. The default is bottom-right.
rect
A rectangle. The parameters are the coordinates of the top-left and bottom-right corners, followed by a title to link to in square brackets.
circle
A circle. The first two parameters are the coordinates of the centre, the third is the radius. The coordinates are followed by a link in square brackets.
poly
A polygon. The coordinates of the vertices are given, followed by a link in square brackets.
Polygons must be defined before any other form!
default
This gives the default link, where no other regions are specified.

All coordinates are specified relative to the source image. The image can be scaled using thumbnail syntax, in which case the image map coordinates will be automatically scaled as well.

All links are given in either the form [[Page title]] or [[Page title|description]]. In the latter case, the part after the pipe "|" becomes the title attribute of the link -- in most browsers, it will pop up as a tooltip when the user hovers over it. If no explicit link description is given, the page title will be used.

Installation Guide

  1. Make a directory in extensions: ImageMap
  2. Download all files from subversion in this directory
  3. Add "require_once( "$IP/extensions/ImageMap/ImageMap.php" );" to your LocalSettings.php

Test installation:

  1. Download Image:Foo.jpg and upload it to your wiki.
  2. Make a new Article ImageMap and copy & paste the text of this article (at least section "syntax example") to your article