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
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- CupertinoTextMagnifier
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