LyricPainter class

Inheritance
Mixed in types

Constructors

LyricPainter(List<Lyric> lyrics, {List<Lyric> remarkLyrics, double currDuration, TickerProvider vsync, TextStyle lyricStyle, TextStyle remarkStyle, TextStyle currLyricStyle, double lyricGapValue, double subLyricGapValue, double lyricMaxWidth})

Properties

canvasSize Size
read / write
currentLyricIndex int
read / write
currLyricTextStyle TextStyle
read / write
hashCode int
The hash code for this object. [...]
read-only, inherited
hasListeners bool
Whether any listeners are currently registered. [...]
@protected, read-only, inherited
lyricGapValue double
read / write
lyricMaxWidth double
read / write
lyrics List<Lyric>
read / write
lyricTextPaints List<TextPainter>
read / write
lyricTextStyle TextStyle
read / write
notEmptyLyricIndex int
read / write
notEmptySubLyricIndex int
read / write
offset dynamic
write-only
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
semanticsBuilder SemanticsBuilderCallback
Returns a function that builds semantic information for the picture drawn by this painter. [...]
read-only, inherited
subLyricGapValue double
read / write
subLyrics List<Lyric>
read / write
subLyricTextPaints List<TextPainter>
read / write
subLyricTextStyle TextStyle
read / write
totalHeight double
read / write

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes. [...]
inherited
animationScrollY(dynamic currentLyricIndex, TickerProvider tickerProvider) → dynamic
computeScrollY(int curLine) double
计算传入行和第一行的偏移量
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 and removeListener will throw after the object is disposed). [...]
@mustCallSuper, inherited
findLyricIndexByDuration(double curDuration, List<Lyric> lyrics) int
getNotEmptyLineHeight(List<Lyric> lyrics) int
因空行高度与非空行高度不一致,获取非空行的位置
hitTest(Offset position) bool
Called whenever a hit test is being performed on an object that is using this custom paint delegate. [...]
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
notifyListeners() → void
Call all the registered listeners. [...]
@protected, @visibleForTesting, 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
shouldRebuildSemantics(covariant CustomPainter 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). [...]
inherited
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
Returns a string representation of this object.
inherited

Operators

operator ==(dynamic other) bool
The equality operator. [...]
inherited