MaterialStateMouseCursor class Null safety
Defines a MouseCursor whose value depends on a set of MaterialStates which represent the interactive state of a component.
This kind of MouseCursor is useful when the set of interactive actions a widget supports varies with its state. For example, a mouse pointer hovering over a disabled ListTile should not display SystemMouseCursors.click, since a disabled list tile doesn't respond to mouse clicks. ListTile's default mouse cursor is a MaterialStateMouseCursor.clickable, which resolves to SystemMouseCursors.basic when the button is disabled.
To use a MaterialStateMouseCursor, you should create a subclass of
MaterialStateMouseCursor and implement the abstract resolve method.
To create a local project with this code sample, run:
flutter create --sample=material.MaterialStateMouseCursor.1 mysample
This class should only be used for parameters which are documented to take MaterialStateMouseCursor, otherwise only the default state will be used.
See also:
- MouseCursor for introduction on the mouse cursor system.
- SystemMouseCursors, which defines cursors that are supported by native platforms.
- Inheritance
-
- Object
- MouseCursor
- MaterialStateMouseCursor
- Implemented types
Constructors
- MaterialStateMouseCursor()
-
Abstract const constructor. This constructor enables subclasses to provide
const constructors so that they can be used in const expressions.
const
Properties
- debugDescription → String
-
A very short description of the mouse cursor.
read-onlyinherited
- hashCode → int
-
The hash code for this object.
read-onlyinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
Methods
-
createSession(
int device) → MouseCursorSession -
Associate a pointing device to this cursor.
override
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
resolve(
Set< MaterialState> states) → MouseCursor -
Returns a MouseCursor that's to be used when a Material component is in
the specified state.
override
-
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
-
toStringShort(
) → String -
A brief description of this object, usually just the runtimeType and the
hashCode.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Constants
- clickable → const MaterialStateMouseCursor
-
A mouse cursor for clickable material widgets, which resolves differently
when the widget is disabled.
_EnabledAndDisabledMouseCursor(enabledCursor: SystemMouseCursors.click, disabledCursor: SystemMouseCursors.basic, name: 'clickable') - textable → const MaterialStateMouseCursor
-
A mouse cursor for material widgets related to text, which resolves differently
when the widget is disabled.
_EnabledAndDisabledMouseCursor(enabledCursor: SystemMouseCursors.text, disabledCursor: SystemMouseCursors.basic, name: 'textable')