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FontAsset

Package | mx.core
Class | public class FontAsset
Inheritance | FontAsset flash.text.Font
Implements | IFlexAsset

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

FontAsset is a subclass of the flash.text.Font class which represents fonts that you embed in a Flex application.

The font that you embed can be TrueType (TTF) or OpenType (OTF). You can also embed a system font or a font that is in a SWF file produced by Flash. In each of these cases, the MXML compiler autogenerates a class that extends FontAsset to represent the embedded font.

You do not generally use the FontAsset class directly when you write a Flex application. For example, you can embed a font by using the `font-face` CSS selector without having to understand that the MXML compiler has created a subclass of FontAsset for you.

However, it might be useful to understand what is happening at the ActionScript level. To embed a font in ActionScript, you declare a variable of type Class, and put `[Embed]` metadata on it. For example, you embed a TTF file like this:

      [Embed(source="Fancy.ttf", fontName="Fancy")]
      var fancyClass:Class;

The MXML compiler transcodes the TTF data into the font format that the player uses, autogenerates a subclass of the FontAsset class, and sets your variable to be a reference to this autogenerated class. You can then use this class reference to create instances of the FontAsset by using the `new` operator, and you can use APIs of the Font class on them; for example:

      var fancyFont:FontAsset = FontAsset(new fancyClass());
      var hasDigits:Boolean = fancyFont.hasGlyphs("0123456789");

However, you rarely need to create FontAsset instances yourself because you use the `fontName` that you specify in the `[Embed]` metadata to refer to the font; for example, you set the `fontFamily` CSS style to the font name (in this example, `"Fancy"`), and not to a FontAsset instance such as `fancyFont` or to the `fancyClass` class reference. For example:

      <mx:Label text="Thank you for your order." fontFamily="Fancy"/>

See also

flash.text.Font

Public Methods

| Method | Defined By
--- | --- | ---
|  | FontAsset() Constructor. | FontAsset

Constructor Detail

FontAsset | () | Constructor

`public function FontAsset()`

Language Version : | ActionScript 3.0

Product Version : | Flex 3

Runtime Versions : | Flash Player 9, AIR 1.1

Constructor.

Wed Nov 15 2017, 09:50 AM +01:00