ScatterTouchData class
Holds data to handle touch events, and touch responses in the ScatterChart.
There is a touch flow, explained here in a simple way, each chart's renderer captures the touch events, and passes the pointerEvent to the painter, and gets touched spot, and wraps it into a concrete ScatterTouchResponse.
- Inheritance
-
- Object
- FlTouchData<
ScatterTouchResponse> - ScatterTouchData
Constructors
-
ScatterTouchData({bool? enabled, BaseTouchCallback<
ScatterTouchResponse> ? touchCallback, MouseCursorResolver<ScatterTouchResponse> ? mouseCursorResolver, Duration? longPressDuration, ScatterTouchTooltipData? touchTooltipData, double? touchSpotThreshold, bool? handleBuiltInTouches}) -
You can disable or enable the touch system using
enabled
flag,
Properties
- enabled → bool
-
You can disable or enable the touch system using enabled flag,
finalinherited
- handleBuiltInTouches → bool
-
set this true if you want the built in touch handling
(show a tooltip bubble and an indicator on touched spots)
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- longPressDuration → Duration?
-
This property that allows to customize the duration of the longPress gesture.
default to 500 milliseconds refer to kLongPressTimeout.
finalinherited
-
mouseCursorResolver
→ MouseCursorResolver<
ScatterTouchResponse> ? -
Using mouseCursorResolver you can change the mouse cursor
based on the provided FlTouchEvent and BaseTouchResponse
finalinherited
-
props
→ List<
Object?> -
Used for equality check, see
EquatableMixin
.no setteroverride - runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- stringify → bool?
-
If set to
true
, the toString method will be overridden to output this instance's props.no setterinherited -
touchCallback
→ BaseTouchCallback<
ScatterTouchResponse> ? -
touchCallback notifies you about the happened touch/pointer events.
It gives you a FlTouchEvent which is the happened event such as FlPointerHoverEvent, FlTapUpEvent, ...
It also gives you a BaseTouchResponse which is the chart specific type and contains information
about the elements that has touched.
finalinherited
- touchSpotThreshold → double
-
we find the nearest spots on touched position based on this threshold
final
- touchTooltipData → ScatterTouchTooltipData
-
show a tooltip on touched spots
final
Methods
-
copyWith(
{bool? enabled, BaseTouchCallback< ScatterTouchResponse> ? touchCallback, MouseCursorResolver<ScatterTouchResponse> ? mouseCursorResolver, Duration? longPressDuration, ScatterTouchTooltipData? touchTooltipData, double? touchSpotThreshold, bool? handleBuiltInTouches}) → ScatterTouchData - Copies current ScatterTouchData to a new ScatterTouchData, and replaces provided values.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited