RawMagnifier class
A common base class for magnifiers.
This sample demonstrates what a magnifier is, and how it can be used.
link
To create a local project with this code sample, run:
flutter create --sample=widgets.RawMagnifier.1 mysample
This magnifying glass is useful for scenarios on mobile devices where the user's finger may be covering part of the screen where a granular action is being performed, such as navigating a small cursor with a drag gesture, on an image or text.
A magnifier can be conveniently managed by MagnifierController, which handles showing and hiding the magnifier, with an optional entry / exit animation.
See:
- MagnifierController, a controller to handle magnifiers in an overlay.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- RawMagnifier
Constructors
- RawMagnifier({Key? key, Widget? child, MagnifierDecoration decoration = const MagnifierDecoration(), Clip clipBehavior = Clip.none, Offset focalPointOffset = Offset.zero, double magnificationScale = 1, required Size size})
-
Constructs a RawMagnifier.
const
Properties
- child → Widget?
-
An optional widget to position inside the len of the RawMagnifier.
final
- clipBehavior → Clip
-
Whether and how to clip the parts of decoration that render inside the
loupe.
final
- decoration → MagnifierDecoration
-
This magnifier's decoration.
final
- focalPointOffset → Offset
-
The offset of the magnifier from RawMagnifier's center.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- magnificationScale → double
-
How "zoomed in" the magnification subject is in the lens.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- size → Size
-
The size of the magnifier.
final
Methods
-
build(
BuildContext context) → Widget -
Describes the part of the user interface represented by this widget.
override
-
createElement(
) → StatelessElement -
Creates a StatelessElement to manage this widget's location in the tree.
inherited
-
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