diff -r 51a74ef9ed63 -r ae94777fff8f Symbian3/SDK/Source/GUID-B02C762B-C452-4184-ABEA-4753E6CD47D2.dita --- a/Symbian3/SDK/Source/GUID-B02C762B-C452-4184-ABEA-4753E6CD47D2.dita Wed Mar 31 11:11:55 2010 +0100 +++ b/Symbian3/SDK/Source/GUID-B02C762B-C452-4184-ABEA-4753E6CD47D2.dita Fri Jun 11 12:39:03 2010 +0100 @@ -1,53 +1,53 @@ - - - - - -Scalability -

The term scalability refers to the ability of an application -UI to function as designed in mobile devices with different screen resolutions -or orientations. For example, in the figure below, the UI scales to fit both -portrait and landscape orientations.

-Scaling -

When you enable scaling in your application, you allow your application -to support the different display sizes, resolutions, and layouts for different -devices based on the Symbian platform. The Symbian platform provides APIs -and other support to enable scaling in applications. Some scaling issues are -handled by the application framework if support is enabled, while other issues -need to be handled by the application. The details of what can be handled -where depend on the nature of your UI architecture. A general rule of thumb -is that the greater the degree of customization in your application, the more -you need to handle scalability issues in the application.

-

You are not required to enable scaling in your applications, although -it is recommended as it enhances usability for mobile device users.

-

The following issues should be kept in mind when enabling your application -for scaling:

- + + + + + +Scalability +

The term scalability refers to the ability of an application +UI to function as designed in mobile devices with different screen resolutions +or orientations. For example, in the figure below, the UI scales to fit both +portrait and landscape orientations.

+Scaling +

When you enable scaling in your application, you allow your application +to support the different display sizes, resolutions, and layouts for different +devices based on the Symbian platform. The Symbian platform provides APIs +and other support to enable scaling in applications. Some scaling issues are +handled by the application framework if support is enabled, while other issues +need to be handled by the application. The details of what can be handled +where depend on the nature of your UI architecture. A general rule of thumb +is that the greater the degree of customization in your application, the more +you need to handle scalability issues in the application.

+

You are not required to enable scaling in your applications, although +it is recommended as it enhances usability for mobile device users.

+

The following issues should be kept in mind when enabling your application +for scaling:

+
    +

  • Layout information should not be hard-coded.

    + +

    The Symbian platform provides the AknLayoutUtils class +for building layouts from resource files.

    +

    Note that you also need to override CCoeControl::HandleResourceChange() and CEikAppUi::HandleResourceChangeL() in your +application to draw your application again in the event that the orientation +of the display changes.

    +     +
    • +

  • Scalable fonts should be used.

    + +

    The Symbian platform provides methods in the AknLayoutUtils for +using logical fonts from an enumeration in the avkon.hrh file.

    +     +
    • +

  • Scalable icons should be used.

    + +

    Scalable icons are based on SVG Tiny (SVG-T) format graphics.

    +     +
    • +
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