LyricsReaderPaint class

draw lyric reader

Inheritance
Implemented types

Constructors

LyricsReaderPaint(LyricsReaderModel? model, LyricUI lyricUI)

Properties

baseOffset → double
no setter
cachePlayingIndex ↔ int
getter/setter pair
centerLyricIndex ↔ int
getter/setter pair
centerLyricIndexChangeCall ↔ dynamic Function(int)?
getter/setter pair
centerY ↔ double
给外部C位位置
getter/setter pair
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
highlightWidth ↔ double
getter/setter pair
layerPaint ↔ Paint
getter/setter pair
lightBlendPaint ↔ Paint
高亮混合笔
getter/setter pair
lyricOffset ↔ double
getter/setter pair
lyricUI ↔ LyricUI
getter/setter pair
maxOffset → double
no setter
model ↔ LyricsReaderModel?
getter/setter pair
mSize ↔ Size
getter/setter pair
playingIndex ↔ int
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
totalHeight ↔ double
getter/setter pair
ts ↔ int
getter/setter pair

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
calculateTotalHeight() → void
calculateTotalHeight
checkOffset(double? offset) → bool
check offset illegal true is OK false is illegal
clearCache() → dynamic
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
drawHighlight(LyricsLineModel model, Canvas canvas, TextPainter? painter, Offset offset) → void
drawLine(int i, double drawOffset, Canvas canvas, LyricsLineModel element) → double
drawText(Canvas canvas, TextPainter? paint, double offsetY, [LyricsLineModel? element]) → double
绘制文本并返回行高度 when element not null,then draw gradient
getLineOffsetX(TextPainter textPainter) → double
获取行绘制横向坐标
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
refresh() → dynamic
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).
override
shouldRepaint(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).
override
toString() → String
A string representation of this object.
inherited

Operators

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