| Package | flash.text.engine |
| Class | public final class FontMetrics |
| Inheritance | FontMetrics  Object |
| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
ElementFormat.getFontMetrics() method returns objects of this class.
Related API Elements
| Property | Defined By | ||
|---|---|---|---|
 | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
| emBox : Rectangle
The emBox value represents the design space of the font and is used to place Chinese,
Korean, or Japanese glyphs relative to the Roman baseline. | FontMetrics | ||
| lineGap : Number
The lineGap value is the suggested gap between lines. | FontMetrics | ||
| strikethroughOffset : Number
The strikethroughOffset value is the suggested vertical offset from the Roman baseline for a strikethrough. | FontMetrics | ||
| strikethroughThickness : Number
The strikethroughThickness value is the suggested thickness for a strikethrough. | FontMetrics | ||
| subscriptOffset : Number
The subscriptOffset value is the suggested vertical offset from the Roman baseline for a subscript. | FontMetrics | ||
| subscriptScale : Number
The subscriptScale value is the suggested scale factor to apply to the point size for a subscript. | FontMetrics | ||
| superscriptOffset : Number
The superscriptOffset value is the suggested vertical offset from the Roman baseline for a superscript. | FontMetrics | ||
| superscriptScale : Number
The superscriptScale value is the suggested scale factor to apply to the point size for a superscript. | FontMetrics | ||
| underlineOffset : Number
The underlineOffset value is the suggested vertical offset from the Roman baseline for an underline. | FontMetrics | ||
| underlineThickness : Number
The underlineThickness value is the suggested thickness for an underline. | FontMetrics | ||
| Method | Defined By | ||
|---|---|---|---|
FontMetrics(emBox:Rectangle, strikethroughOffset:Number, strikethroughThickness:Number, underlineOffset:Number, underlineThickness:Number, subscriptOffset:Number, subscriptScale:Number, superscriptOffset:Number, superscriptScale:Number, lineGap:Number = 0.0)
Creates a FontMetrics object. | FontMetrics | ||
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Indicates whether an object has a specified property defined. | Object | |
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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 | |
|
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 | |
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Returns the string representation of the specified object. | Object | |
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Returns the primitive value of the specified object. | Object | |
emBox | property |
public var emBox:Rectangle| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
The emBox value represents the design space of the font and is used to place Chinese, Korean, or Japanese glyphs relative to the Roman baseline. Typically a square, sized to the point size of the font. The origin (coordinate 0,0) of the emBox is set to the left edge and Roman baseline of the rect. For example, for a 10-point font, the emBox can be a rect [L,T,R,B] of [0, -8.8, 10, 1.2].
lineGap | property |
public var lineGap:Number| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10.3, AIR 2.6 |
The lineGap value is the suggested gap between lines.
This value is set by the font designer, and can vary widely from font to font. In a multi-script font, different line gaps may be suitable for different scripts; no single value may suffice. Furthermore, different kinds of text usage for a particular script (for example, whether Japanese text is annotated with ruby or not) may require different line gaps.
strikethroughOffset | property |
public var strikethroughOffset:Number| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
The strikethroughOffset value is the suggested vertical offset from the Roman baseline for a strikethrough.
Note that depending on the rotation of the line, this value is either added or subtracted from the
position of the line to find the position for the strikethrough. In a line with TextRotation.ROTATE_0,
strikethrough.y = line.y + strikethroughOffset. In a line
with TextRotation.ROTATE_90, strikethrough.x = line.x - strikethroughOffset.
When applying decorations such as strikethroughs to a TextLine, the recommended procedure is to specify
an eventMirror on the ContentElement which is to receive the decoration.
In response to the Event.ADDED event, the bounds of the
TextLineMirrorRegion can be used in conjunction
with the strikethroughOffset to place the strikethrough.
Related API Elements
strikethroughThickness | property |
public var strikethroughThickness:Number| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
The strikethroughThickness value is the suggested thickness for a strikethrough.
subscriptOffset | property |
public var subscriptOffset:Number| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
The subscriptOffset value is the suggested vertical offset from the Roman baseline for a subscript.
The subscriptOffset value is used with ElementFormat.baselineShift to position the subscript.
Related API Elements
subscriptScale | property |
public var subscriptScale:Number| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
The subscriptScale value is the suggested scale factor to apply to the point size for a subscript. A scale factor of 1.0 means no scaling.
superscriptOffset | property |
public var superscriptOffset:Number| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
The superscriptOffset value is the suggested vertical offset from the Roman baseline for a superscript.
The superscriptOffset value is used with ElementFormat.baselineShift to position the superscript.
Related API Elements
superscriptScale | property |
public var superscriptScale:Number| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
The superscriptScale value is the suggested scale factor to apply to the point size for a superscript. A scale factor of 1.0 means no scaling.
underlineOffset | property |
public var underlineOffset:Number| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
The underlineOffset value is the suggested vertical offset from the Roman baseline for an underline.
Note that depending on the rotation of the line, this value is either added or subtracted from the
position of the line to find the position for the underline. In a line with TextRotation.ROTATE_0,
underline.y = line.y + underlineOffset. In a line
with TextRotation.ROTATE_90, underline.x = line.x - underlineOffset.
When applying decorations such as underlines to a TextLine, the recommended procedure is to specify
an eventMirror on the ContentElement which is to receive the decoration.
In response to the Event.ADDED event, the bounds of the
TextLineMirrorRegion can be used in conjunction
with the underlineOffset to place the underline.
Related API Elements
underlineThickness | property |
public var underlineThickness:Number| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
The underlineThickness value is the suggested thickness for an underline.
FontMetrics | () | Constructor |
public function FontMetrics(emBox:Rectangle, strikethroughOffset:Number, strikethroughThickness:Number, underlineOffset:Number, underlineThickness:Number, subscriptOffset:Number, subscriptScale:Number, superscriptOffset:Number, superscriptScale:Number, lineGap:Number = 0.0)| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5, Flash Lite 4 |
Creates a FontMetrics object. The FontMetrics object contains information about
the metrics of a font in an element format.
The flash.text.engine.ElementFormat.getFontMetrics() method returns objects of this class.
emBox:Rectangle — The emBox of the font in pixels.
| |
strikethroughOffset:Number — The offset for a strikethrough in pixels.
| |
strikethroughThickness:Number — The thickness for a strikethrough in pixels.
| |
underlineOffset:Number — The offset for an underline in pixels.
| |
underlineThickness:Number — The thickness for an underline in pixels.
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subscriptOffset:Number — The offset for a subscript in pixels.
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subscriptScale:Number — The scale to apply to the point size of a subscript.
| |
superscriptOffset:Number — The offset for a superscript in pixels.
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superscriptScale:Number — The scale to apply to the point size of a superscript.
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lineGap:Number (default = 0.0) |
Related API Elements
Thu Dec 4 2014, 05:50 PM -08:00