Extension:ImageSizeInfoFunctions

MediaWiki extensions manual

ImageSizeInfoFunctions Release status: stable
Implementation	Parser function
Description	return image width and height in pixel
Author(s)	Dario de Judicibus, (mantainer Giuseppe Briotti)
Latest version	1.0.1 (2009-01-24)
MediaWiki	1.8, 1.9, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17
License	No license specified
Download	ImageSizeInfoFunctions.php
Translate the ImageSizeInfoFunctions extension if it is available at translatewiki.net
Check usage and version matrix; code metrics

Introduction

ImageSizeInfoFunctions is an extension to MediaWiki that gives two parser functions returning width and height size of a given image, available in the wiki.

Its purpose is to make it easier to create a template for resizing an image in percentage instead of absolute size. This is useful for images gallery based on images of the same scale but different size.

Features

• imageWidth (imgw) returns the image width in pixel.
• imageHeight (imgh) returns the image height in pixel.

Installation

1. Download ImageSizeInfoFunctions.php
2. Download ImageSizeInfoFunctions.i18n.php
3. Save both files in the new extensions/ImageSizeInfoFunctions directory of your wiki.
4. Insert these lines in the LocalSettings.php file:

// Activate ImageSizeInfoFunctions extension
include_once('extensions/ImageSizeInfoFunctions/ImageSizeInfoFunctions.php');

Configuration

no configuration required

Usage

As for all parser functions:

{{#imgw: [image name] }}

{{#imgh: [image name] }}

Template Example

This template is useful for scaling the given image by percentage or, as usual, by absolute size:

<includeonly>[[Image:{{{imagename}}}|{{ #if:{{#pos:{{{newwidth|100}}}|px}}|{{{newwidth|100}}}| {{#expr: ({{#imgw: {{{imagename}}} }} * {{{newwidth|100}}}) / 100 }}px }}|{{{caption|}}}]]</includeonly>

Thus, assuming that the template is called ScaleImage:

Scaling the image to 15%:

{{ScaleImage
|imagename=eland.png
|caption=Città di Eland
|newwidth=15
}}

Scaling the image to 80 pixel:

{{ScaleImage
|imagename=eland.png
|caption=Città di Eland
|newwidth=80px
}}

Version history

• 0.0.1 - testing
• 1.0.0 - first stable release
• 1.0.1 - improvement suggested by G.Hagedorn in discussion page

Feedback

Use the discussion page for feedback, questions, feature requests and bug reports.

Sites using this extension

• wiki dedicated to DSA role playing game