BarTouchData class

Holds data to handle touch events, and touch responses in the BarChart.

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 BarTouchResponse.

Inheritance

Constructors

BarTouchData({bool? enabled, BaseTouchCallback<BarTouchResponse>? touchCallback, MouseCursorResolver<BarTouchResponse>? mouseCursorResolver, Duration? longPressDuration, BarTouchTooltipData? touchTooltipData, EdgeInsets? touchExtraThreshold, bool? allowTouchBarBackDraw, bool? handleBuiltInTouches})
You can disable or enable the touch system using enabled flag,

Properties

allowTouchBarBackDraw → bool
Determines to handle touches on the back draw bar.
final
enabled → bool
You can disable or enable the touch system using enabled flag,
finalinherited
handleBuiltInTouches → bool
Determines to handle default built-in touch responses, BarTouchResponse shows a tooltip popup above the touched spot.
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<BarTouchResponse>?
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<BarTouchResponse>?
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
touchExtraThreshold → EdgeInsets
Distance threshold to handle the touch event.
final
touchTooltipData → BarTouchTooltipData
Configs of how touch tooltip popup.
final

Methods

copyWith({bool? enabled, BaseTouchCallback<BarTouchResponse>? touchCallback, MouseCursorResolver<BarTouchResponse>? mouseCursorResolver, Duration? longPressDuration, BarTouchTooltipData? touchTooltipData, EdgeInsets? touchExtraThreshold, bool? allowTouchBarBackDraw, bool? handleBuiltInTouches}) → BarTouchData
Copies current BarTouchData to a new BarTouchData, 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