CupertinoTextMagnifier class

A CupertinoMagnifier used for magnifying text in cases where a user's finger may be blocking the point of interest, like a selection handle.

Delegates styling to CupertinoMagnifier with its position depending on magnifierInfo.

Specifically, the CupertinoTextMagnifier follows the following rules. CupertinoTextMagnifier:

  • is positioned horizontally inside the screen width, with horizontalScreenEdgePadding padding.
  • is hidden if a gesture is detected hideBelowThreshold units below the line that the magnifier is on, shown otherwise.
  • follows the x coordinate of the gesture directly (with respect to rule 1).
  • has some vertical drag resistance; i.e. if a gesture is detected k units below the field, then has vertical offset dragResistance * k.
Inheritance

Constructors

CupertinoTextMagnifier({Key? key, Curve animationCurve = Curves.easeOut, required MagnifierController controller, double dragResistance = 10.0, double hideBelowThreshold = 48.0, double horizontalScreenEdgePadding = 10.0, required ValueNotifier<MagnifierInfo> magnifierInfo})
Constructs a RawMagnifier in the Cupertino style, positioning with respect to magnifierInfo.
const

Properties

animationCurve Curve
The curve used for the in / out animations.
final
controller MagnifierController
This magnifier's controller.
final
dragResistance double
A drag resistance on the downward Y position of the lens.
final
hashCode int
The hash code for this object.
no setterinherited
hideBelowThreshold double
The difference in Y between the gesture position and the caret center so that the magnifier hides itself.
final
horizontalScreenEdgePadding double
The padding on either edge of the screen that any part of the magnifier cannot exist past.
final
key Key?
Controls how one widget replaces another widget in the tree.
finalinherited
magnifierInfo ValueNotifier<MagnifierInfo>
CupertinoTextMagnifier will determine its own positioning based on the MagnifierInfo of this notifier.
final
runtimeType Type
A representation of the runtime type of the object.
no setterinherited

Methods

createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() State<CupertinoTextMagnifier>
Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a one-line detailed description of the object.
inherited
toStringShort() String
A short, textual description of this widget.
inherited

Operators

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