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Revision as of 12:15, 24 June 2011 by hamishwillee (Talk | contribs)

Customising a Guarana UI checkbox

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Template:KBCS

Article Metadata
Tested with
Devices(s): Nokia 5800 XpressMusic
Article
Created: tapla (30 Dec 2009)
Last edited: hamishwillee (24 Jun 2011)

Overview

This code snippet demonstrates how to customise a Guarana UI checkbox. You can download the component library from Nokia Developer. This snippet assumes that you are familiar with adding the checkbox component on a web page. For more information about this, read the snippet CS001548 - Adding a Guarana UI checkbox on a web page.

To replace the checkbox with your own version, first create the graphics that you want to use. After that, replace the file themes/nokia/base/images/checkbox.png with your own image file. The original image file contains pictures of the checkbox in four different states: checked and not pushed, checked and pushed, unchecked and not pushed, and unchecked and pushed:
Guarana checkbox default img.png
To switch between these states when the checkbox is clicked, adjust the background picture with CSS classes as shown here:

.nokia-checkbox-unchecked {
background-position: 0 -74px;
}

This means that you must customise the CSS file themes/nokia/base/images/checkbox.css so that it corresponds to your own image file. For example, if you have created this file:
Guarana checkbox custom img.png
where the checkbox icon is 34 x 34 pixels, and there are only two states (checked and unchecked) represented, then the customised CSS classes would look like this:

.nokia-checkbox-icon {
background-image: url(images/checkbox.png);
height: 34px;
width: 34px;
float: left;
}
 
.nokia-checkbox-checked {
background-position: 0px 0;
}
 
.nokia-checkbox-unchecked {
background-position: 0 -34px;
}
 
.nokia-checkbox-pushed .nokia-checkbox-checked {
background-position: 0 0px;
}
 
.nokia-checkbox-pushed .nokia-checkbox-unchecked {
background-position: 0 -34px;
}

Postconditions

The default graphics of a checkbox component are replaced with your own graphics and the necessary changes are made to the CSS file.

See also

Supplementary material

This code snippet is part of the stub concept, which means that it has been patched on top of a template application in order to be more useful for developers. The version of the WRT stub application used as a template in this snippet is v1.2.

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