Package | mx.core |
Class | public class FontAsset |
Inheritance | FontAsset Font Object |
Implements | IFlexAsset |
Language Version: | ActionScript 3.0 |
Product Version: | Flex 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
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"/>
More examples
Related API Elements
Method | Defined By | ||
---|---|---|---|
Constructor. | FontAsset | ||
[static]
Specifies whether to provide a list of the currently available embedded fonts. | Font | ||
Specifies whether a provided string can be displayed using the currently assigned font. | Font | ||
Indicates whether an object has a specified property defined. | Object | ||
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | ||
Indicates whether the specified property exists and is enumerable. | Object | ||
[static]
Registers a font class in the global font list. | Font | ||
Sets the availability of a dynamic property for loop operations. | Object | ||
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | ||
Returns the string representation of the specified object. | Object | ||
Returns the primitive value of the specified object. | Object |
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 21 2018, 06:34 AM -08:00