ImageAnnotation class
@author jd
- Inheritance
-
- Object
- Annotation
- ImageAnnotation
Constructors
-
ImageAnnotation({dynamic userInfo, ValueChanged<
Annotation> ? onTap, bool fixed = false, int yAxisPosition = 0, double? minZoomVisible, double? maxZoomVisible, Offset anchor(Size)?, required Image image, List<num> ? positions, Offset offset = Offset.zero})
Properties
- anchor → (Offset Function(Size)?)
-
设置ImageAnnotation的偏移，忽略positions的设置
final
- fixed → bool
-
是否滚动
finalinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- image → Image
-
图片
final
- isInit ↔ bool
-
getter/setter pairinherited
- maxZoomVisible → double?
-
大于该缩放级别则隐藏
finalinherited
- minZoomVisible → double?
-
小于该缩放级别则隐藏
finalinherited
- offset → Offset
-
偏移，可以做细微调整
final
-
onTap
→ ValueChanged<
Annotation> ? -
标注可以点击
finalinherited
-
positions
→ List<
num> ? -
两个长度的数组，优先级最高，ImageAnnotation的位置，对应xy轴的value
final
- rect ↔ Rect?
-
所在的区域
getter/setter pairinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- userInfo → dynamic
-
携带额外信息
finalinherited
- yAxisPosition → int
-
跟哪个y轴关联
finalinherited
Methods
-
draw(
Canvas canvas, ChartsState state) → void -
init(
ChartsState state) → void -
初始化 耗时的方法都可以放到这里
inherited
-
isNeedDraw(
ChartsState state) → bool -
是否需要绘制
inherited
-
isRange(
Offset point) → bool -
判断point是否在此Annotation范围内
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
getAssetImage(
String asset, {dynamic width, dynamic height}) → Future< Image> - 获取本地图片 返回ui.Image
-
getNetImage(
String url, {dynamic width, dynamic height}) → Future< Image> - 获取网络图片 返回ui.Image