Defines values for setting the 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.
[static] Specifies that leading basis is ROMAN and leading direction is UP.
LeadingModel
Constant Detail
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.
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.
Object
