| Package | flashx.textLayout.formats |
| Class | public final class LeadingModel |
| Inheritance | LeadingModel  Object |
| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
leadingModel property
of the TextLayoutFormat class, composed of valid combinations of leading basis and leading direction.
Leading basis describes which baselines determine the leading (or lineHeight) of lines in a paragraph.
Leading direction specifies whether the lineHeight property refers to the distance of a line's
baseline from that of the line before it or the line after it.
Related API Elements
TextLayoutFormat.lineHeight
flash.text.TextField
flash.text.engine.TextLine
| Property | Defined By | ||
|---|---|---|---|
 | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
| Method | Defined By | ||
|---|---|---|---|
|
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 | |
|
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 | |
| Constant | Defined By | ||
|---|---|---|---|
| APPROXIMATE_TEXT_FIELD : String = "approximateTextField" [static] Specifies a leading model that approximates the line spacing behavior of TextField. | LeadingModel | ||
| ASCENT_DESCENT_UP : String = "ascentDescentUp" [static] Specifies that leading basis is ASCENT/DESCENT and leading direction is UP. | LeadingModel | ||
| AUTO : String = "auto" [static] Specifies that leading model is chosen automatically based on the paragraph's locale property. | LeadingModel | ||
| BOX : String = "box" [static] Specifies a leading model based on the CSS inline formatting model, which involves stacking line boxes contiguously. | LeadingModel | ||
| IDEOGRAPHIC_CENTER_DOWN : String = "ideographicCenterDown" [static] Specifies that leading basis is IDEOGRAPHIC_CENTER and leading direction is down. | LeadingModel | ||
| IDEOGRAPHIC_CENTER_UP : String = "ideographicCenterUp" [static] Specifies that leading basis is IDEOGRAPHIC_CENTER and leading direction is UP. | LeadingModel | ||
| IDEOGRAPHIC_TOP_DOWN : String = "ideographicTopDown" [static] Specifies that leading basis is IDEOGRAPHIC_TOP and leading direction is DOWN. | LeadingModel | ||
| IDEOGRAPHIC_TOP_UP : String = "ideographicTopUp" [static] Specifies that leading basis is IDEOGRAPHIC_TOP and leading direction is UP. | LeadingModel | ||
| ROMAN_UP : String = "romanUp" [static] Specifies that leading basis is ROMAN and leading direction is UP. | LeadingModel | ||
APPROXIMATE_TEXT_FIELD | Constant |
public static const APPROXIMATE_TEXT_FIELD:String = "approximateTextField"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies a leading model that approximates the line spacing behavior of TextField.
It is similar to ASCENT_DESCENT_UP in that lineHeight refers to the
distance of a line's ascent baseline from the previous line's descent baseline. However, baseline
positions approximate those determined by TextField, rather than using metrics
offered by TextLine.
ASCENT_DESCENT_UP | Constant |
public static const ASCENT_DESCENT_UP:String = "ascentDescentUp"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies that leading basis is ASCENT/DESCENT and leading direction is UP.
In other words, lineHeight refers to the distance of a line's ascent baseline from the
previous line's descent baseline.
AUTO | Constant |
public static const AUTO:String = "auto"| Language Version: | ActionScript #IDEOGRAPHIC_TOP_DOWN |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies that leading model is chosen automatically based on the paragraph's locale property.
For Japanese and Chinese, it is IDEOGRAPHIC_TOP_DOWN and for all others it is ROMAN_UP.
BOX | Constant |
public static const BOX:String = "box"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies a leading model based on the CSS inline formatting model, which involves stacking line boxes contiguously.
A line box is defined as the bounding box around inline boxes for all leaf elements on the text line, after they have been aligned
using baselineShift, dominantBaseline, alignmentBaseline etc. For a span, the inline box
is obtained by applying leading equally above and below the text content such that its height equals lineHeight.
For an inline graphic, lineHeight is ignored; the inline box is derived from its specified dimensions and padding values.
Also, firstBaselineOffset is ignored with this leading model.
For more information, see Box leading model.
IDEOGRAPHIC_CENTER_DOWN | Constant |
public static const IDEOGRAPHIC_CENTER_DOWN:String = "ideographicCenterDown"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies that leading basis is IDEOGRAPHIC_CENTER and leading direction is down.
In other words, lineHeight refers to the distance of a line's ideographic center
baseline from the next line's ideographic center baseline.
IDEOGRAPHIC_CENTER_UP | Constant |
public static const IDEOGRAPHIC_CENTER_UP:String = "ideographicCenterUp"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies that leading basis is IDEOGRAPHIC_CENTER and leading direction is UP.
In other words, lineHeight refers to the distance of a line's ideographic center
baseline from the previous line's ideographic center baseline.
IDEOGRAPHIC_TOP_DOWN | Constant |
public static const IDEOGRAPHIC_TOP_DOWN:String = "ideographicTopDown"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies that leading basis is IDEOGRAPHIC_TOP and leading direction is DOWN.
In other words, lineHeight refers to the distance of a line's ideographic top baseline
from the next line's ideographic top baseline.
IDEOGRAPHIC_TOP_UP | Constant |
public static const IDEOGRAPHIC_TOP_UP:String = "ideographicTopUp"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies that leading basis is IDEOGRAPHIC_TOP and leading direction is UP.
In other words, lineHeight refers to the distance of a line's ideographic top
baseline from the previous line's ideographic top baseline.
ROMAN_UP | Constant |
public static const ROMAN_UP:String = "romanUp"| Language Version: | ActionScript 3.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies that leading basis is ROMAN and leading direction is UP.
In other words, lineHeight refers to the distance of a line's Roman baseline from the
previous line's Roman baseline.
Thu Dec 4 2014, 05:50 PM -08:00