WidgetUtil class
Widget Util.
Constructors
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
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asyncPrepare(
BuildContext context, bool isOnce, ValueChanged< Rect> onCallBack) → void - Widget rendering listener. Widget渲染监听. context: Widget context. isOnce: true,Continuous monitoring false,Listen only once. onCallBack: Widget Rect CallBack.
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asyncPrepares(
bool isOnce, ValueChanged< Rect?> ? onCallBack) → void - Widget渲染监听.
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noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
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toString(
) → String -
A string representation of this object.
inherited
Operators
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operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
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getImageWH(
{Image? image, String? url, String? localUrl, String? package}) → Future< Rect> - get image width height，load error return Rect.zero.（unit px） 获取图片宽高，加载错误情况返回 Rect.zero.（单位 px） image url network local url , package
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getImageWHE(
{Image? image, required String url, required String localUrl, required String package}) → Future< Rect> - get image width height, load error throw exception.（unit px） 获取图片宽高，加载错误会抛出异常.（单位 px） image url network local url (full path/全路径，example："assets/images/ali_connors.png"，""assets/images/3.0x/ali_connors.png"" ); package
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getWidgetBounds(
BuildContext context) → Rect - get Widget Bounds (width, height, left, top, right, bottom and so on).Widgets must be rendered completely. 获取widget Rect
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getWidgetLocalToGlobal(
BuildContext context) → Offset - Get the coordinates of the widget on the screen.Widgets must be rendered completely. 获取widget在屏幕上的坐标,widget必须渲染完成