LineMetrics class Null safety
LineMetrics stores the measurements and statistics of a single line in the paragraph.
The measurements here are for the line as a whole, and represent the maximum extent of the line instead of per-run or per-glyph metrics. For more detailed metrics, see TextBox and Paragraph.getBoxesForRange.
LineMetrics should be obtained directly from the Paragraph.computeLineMetrics method.
Constructors
- LineMetrics({required bool hardBreak, required double ascent, required double descent, required double unscaledAscent, required double height, required double width, required double left, required double baseline, required int lineNumber})
- Creates a LineMetrics object with only the specified values.
Properties
- ascent → double
-
The rise from the baseline as calculated from the font and style for this line.
final
- baseline → double
-
The y coordinate of the baseline for this line from the top of the paragraph.
final
- descent → double
-
The drop from the baseline as calculated from the font and style for this line.
final
- hardBreak → bool
-
True if this line ends with an explicit line break (e.g. '\n') or is the end
of the paragraph. False otherwise.
final
- hashCode → int
-
The hash code for this object.
read-onlyoverride
- height → double
-
Total height of the line from the top edge to the bottom edge.
final
- left → double
-
The x coordinate of left edge of the line.
final
- lineNumber → int
-
The number of this line in the overall paragraph, with the first line being
index zero.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
- unscaledAscent → double
-
The rise from the baseline as calculated from the font and style for this line
ignoring the
TextStyle.height.final - width → double
-
Width of the line from the left edge of the leftmost glyph to the right
edge of the rightmost glyph.
final
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
override