const Slider({
Key key,
@required this.value, //当前值
@required this.onChanged,//滑动改变
this.onChangeStart,//开始滑动位置
this.onChangeEnd,//结束滑动位置
this.min = 0.0,//最小值
this.max = 1.0,//最大值
this.divisions,//分为几个等级
this.label,//滑动气泡
this.activeColor,//滑动过的颜色
this.inactiveColor,//未滑动过的颜色
this.mouseCursor,
this.semanticFormatterCallback,
this.focusNode,
this.autofocus = false,
})

SliderTheme

SliderThemeData

SliderThemeData({
this.trackHeight, //滑动线的高度
this.activeTrackColor,//滑动过的颜色
this.inactiveTrackColor,//未滑动过的颜色
this.disabledActiveTrackColor,//禁用的活动轨迹颜色
this.disabledInactiveTrackColor,//禁用活动刻度线颜色
this.activeTickMarkColor,//活动刻度线颜色
this.inactiveTickMarkColor,//非活动刻度线颜色
this.disabledActiveTickMarkColor,//禁用活动刻度线颜色
this.disabledInactiveTickMarkColor,//禁用非活动刻度线颜色
this.thumbColor,//拇指
this.overlappingShapeStrokeColor,//重叠形状笔划颜色
this.disabledThumbColor,
this.overlayColor,//覆盖颜色
this.valueIndicatorColor,//数值指示器颜色
this.overlayShape,//覆盖形状
this.tickMarkShape,//刻度线形状
this.thumbShape,//拇指形状
this.trackShape,//滑动线形状
this.valueIndicatorShape,/数值指示器形状
this.rangeTickMarkShape,//范围刻度线形状
this.rangeThumbShape,//范围拇指形状
this.rangeTrackShape,//范围轨道形状
this.rangeValueIndicatorShape,//范围值指示器形状
this.showValueIndicator,//是否显示值指示器
this.valueIndicatorTextStyle,//指示器文字样式
this.minThumbSeparation,//最小拇指分离
this.thumbSelector,//拇指选择器
})

SliderTrackShape 通道

RoundedRectSliderTrackShape 圆形
RectangularSliderTrackShape 矩形