Porting between Symbian Web Runtime and Nokia Asha Web Apps
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| − | + | [[Category:Symbian Web Runtime]][[Category:Symbian Web Runtime]] | |
| + | {{Abstract|This article explains the differences between Symbian Web Runtime and Series 40 Web Apps, and the changes you need to make to port between the two formats.}} | ||
| − | + | == Overview == | |
| + | The Symbian Web Runtime (WRT) is the official Web Runtime offering by Nokia for Symbian devices. Series 40 Web Apps are W3C compliant widgets than run on Nokia Series 40 devices. | ||
| − | The | + | The two types of web apps are actually quite similar; they are both constructed from traditional web resources written in html, javascript and CSS, have a registration file, and are packaged in zip files. While the execution model is quite different, from a developer point of view the packaging and programming is much the same. As a result developers can port between the two types with little effort. |
| − | + | == File name == | |
| + | Both types of web apps are packaged in a zip file containing much the same files. The main change in this area when porting is to use the correct file extension: | ||
| + | * Series 40 Web App has extension .wgt | ||
| + | * Symbian Web Runtime has extension .wgz | ||
| + | It is also necessary to change the registration file, as discussed below. | ||
| − | + | == Registration file == | |
| − | + | Symbian and Series 40 Web Apps use similar but different registration files: | |
| + | * Symbian Web Runtime: info.plist | ||
| + | * Series 40 Web Apps: config.xml | ||
| + | |||
| + | It is relatively easy to rename the file and convert the needed tags. An example is given below. | ||
If the info.plist file of a Symbian Widget is | If the info.plist file of a Symbian Widget is | ||
| Line 39: | Line 49: | ||
</pre> | </pre> | ||
| − | + | If need be, developers can add other tags such as | |
| − | + | ||
<pre> | <pre> | ||
<description>...</description> | <description>...</description> | ||
| Line 53: | Line 62: | ||
</pre> | </pre> | ||
| − | etc | + | etc. |
| + | |||
| + | == Size of UI elements == | ||
| + | |||
| + | The screen size of Series 40 device is different from Symbian devices, so the application must change the width and height of some items in {{Icode|html}} or {{Icode|css}} in order to optimise the UI. This includes text, images and videos. | ||
| + | |||
| + | == Media file size == | ||
| + | |||
| + | Series 40 devices typically are less powerful than Symbian devices. In order to run applications at acceptable speeds, it may be necessary to use smaller media files, including images, audio and video. | ||
| + | |||
| + | |||
[[Category:Series 40 Web Apps]] | [[Category:Series 40 Web Apps]] | ||
Revision as of 10:51, 5 July 2011
This article explains the differences between Symbian Web Runtime and Series 40 Web Apps, and the changes you need to make to port between the two formats.
Contents |
Overview
The Symbian Web Runtime (WRT) is the official Web Runtime offering by Nokia for Symbian devices. Series 40 Web Apps are W3C compliant widgets than run on Nokia Series 40 devices.
The two types of web apps are actually quite similar; they are both constructed from traditional web resources written in html, javascript and CSS, have a registration file, and are packaged in zip files. While the execution model is quite different, from a developer point of view the packaging and programming is much the same. As a result developers can port between the two types with little effort.
File name
Both types of web apps are packaged in a zip file containing much the same files. The main change in this area when porting is to use the correct file extension:
- Series 40 Web App has extension .wgt
- Symbian Web Runtime has extension .wgz
It is also necessary to change the registration file, as discussed below.
Registration file
Symbian and Series 40 Web Apps use similar but different registration files:
- Symbian Web Runtime: info.plist
- Series 40 Web Apps: config.xml
It is relatively easy to rename the file and convert the needed tags. An example is given below.
If the info.plist file of a Symbian Widget is
<xmlversion="1.0"encoding="UTF8"> <DOCTYPEplistPUBLIC "//Nokia//DTDPLIST1.0//EN" "http://www.nokia.com/NOKIA_COM_1/DTDs/plist-1.0.dtd"> <plist version="1.0"><dict> <key>DisplayName</key> <string>A Widget</string> <key>Identifier</key> <string>xxx.xxx.widget</string> <key>MainHTML</key> <string>AWidget.html</string> </dict></plist>
and the config.xml of a S40 Web App must be altered as
<?xml version="1.0" encoding="UTF-8"?>
<widget xmlns=" http://www.w3.org/ns/widgets" height="200"
id="http://nokia.com/simplemaps" version="0.1.0"
viewmodes="windowed fullscreen" width="200">
<name short="AW">A Widget</name>
...
<icon src="icon.png"/>
<content src="AWidget.html"/>
...
</widget>
If need be, developers can add other tags such as
<description>...</description> <author email=" mailbox@email.com" href=" http://www.website.com/"> Corporation </author> <license>...</license>
etc.
Size of UI elements
The screen size of Series 40 device is different from Symbian devices, so the application must change the width and height of some items in html or css in order to optimise the UI. This includes text, images and videos.
Media file size
Series 40 devices typically are less powerful than Symbian devices. In order to run applications at acceptable speeds, it may be necessary to use smaller media files, including images, audio and video.
