LyricPainter class

Inheritance
Implemented types

Constructors

LyricPainter(TextStyle style, LyricContent? lyric, {TextAlign textAlign = TextAlign.center, Color highlight = Colors.red})
param lyric must not be null

Properties

currentLine ↔ int
getter/setter pair
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
height → double
no setter
lineGradientPercent ↔ double
getter/setter pair
lyric ↔ LyricContent?
getter/setter pair
lyricPainters ↔ List<TextPainter>
getter/setter pair
offsetScroll ↔ double
getter/setter pair
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
semanticsBuilder → SemanticsBuilderCallback?
Returns a function that builds semantic information for the picture drawn by this painter.
no setteroverride
textAlign ↔ TextAlign
getter/setter pair
tmpPreDy ↔ double
getter/setter pair

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
computeScrollTo(int destination) → double
dispose() → void
Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
inherited
drawLine(Canvas canvas, TextPainter painter, double dy, Size size) → void
draw a lyric line
hitTest(Offset position) → bool?
Called whenever a hit test is being performed on an object that is using this custom paint delegate.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
paint(Canvas canvas, Size size) → void
Called whenever the object needs to paint. The given Canvas has its coordinate space configured such that the origin is at the top left of the box. The area of the box is the size of the size argument.
override
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
repaint() → void
shouldRebuildSemantics(covariant LyricPainter oldDelegate) → bool
Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
override
shouldRepaint(covariant LyricPainter oldDelegate) → bool
Called whenever a new instance of the custom painter delegate class is provided to the RenderCustomPaint object, or any time that a new CustomPaint object is created with a new instance of the custom painter delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
override
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited