CrosshairBehavior class
This class has the properties of the crosshair behavior.
Crosshair behavior has the activation mode and line type property to set the behavior of the crosshair. It also has the property to customize the appearance.
Provide options for activation mode, line type, line color, line width, hide delay for customizing the behavior of the crosshair.
Constructors
-
CrosshairBehavior({ActivationMode activationMode = ActivationMode.longPress, CrosshairLineType lineType = CrosshairLineType.both, List<
double> ? lineDashArray, bool enable = false, Color? lineColor, double lineWidth = 1, bool shouldAlwaysShow = false, double hideDelay = 0}) - Creating an argument constructor of CrosshairBehavior class.
Properties
- activationMode → ActivationMode
-
Gesture for activating the crosshair.
final
- enable → bool
-
Toggles the visibility of the crosshair.
final
- hashCode → int
-
The hash code for this object.
no setteroverride
- hideDelay → double
-
Time delay for hiding the crosshair.
final
- lineColor → Color?
-
Color of the crosshair line.
final
-
lineDashArray
→ List<
double> ? -
Dashes of the crosshair line.
final
- lineType → CrosshairLineType
-
Type of crosshair line.
final
- lineWidth → double
-
Width of the crosshair line.
final
- parentBox ↔ RenderBox?
-
getter/setter pairinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- shouldAlwaysShow → bool
-
Enables or disables the crosshair.
final
Methods
-
drawHorizontalAxisLine(
PaintingContext context, Offset offset, List< double> ? dashArray, Paint paint) → void - Override this method to customize the horizontal line drawing and styling.
-
drawHorizontalAxisTooltip(
PaintingContext context, Offset position, String text, TextStyle style, [Path? path, Paint? fillPaint, Paint? strokePaint]) → void - Override this method to customize the horizontal axis tooltip with styling and it's position.
-
drawVerticalAxisLine(
PaintingContext context, Offset offset, List< double> ? dashArray, Paint paint) → void - Override this method to customize the vertical line drawing and styling.
-
drawVerticalAxisTooltip(
PaintingContext context, Offset position, String text, TextStyle style, [Path? path, Paint? fillPaint, Paint? strokePaint]) → void - Override this method to customize the vertical axis tooltip with styling and it's position.
-
handleDoubleTap(
Offset position) → void - Called when pointer tap has contacted the screen double time in behavior.
-
handleEvent(
PointerEvent event, BoxHitTestEntry entry) → void - To customize the necessary pointer events in behaviors. (e.g., CrosshairBehavior, TrackballBehavior, ZoomingBehavior).
-
handleLongPressEnd(
LongPressEndDetails details) → void - Called when the pointer stops contacting the screen after a long-press by a primary button in behavior.
-
handleLongPressMoveUpdate(
LongPressMoveUpdateDetails details) → void - Called when moving after the long press gesture by a primary button is recognized in behavior.
-
handleLongPressStart(
LongPressStartDetails details) → void - Called when a long press gesture by a primary button has been recognized in behavior.
-
handlePointerEnter(
PointerEnterEvent details) → void - Called when a pointer or mouse enter on the screen.
-
handlePointerExit(
PointerExitEvent details) → void - Called when a pointer or mouse exit on the screen.
-
handleScaleEnd(
ScaleEndDetails details) → void -
Called when the pointers are no longer in contact with the screen.
inherited
-
handleScaleStart(
ScaleStartDetails details) → void -
Called when the pointers in contact with the screen
and initial scale of 1.0.
inherited
-
handleScaleUpdate(
ScaleUpdateDetails details) → void -
Called when the pointers in contact with the screen have indicated
a new scale.
inherited
-
handleTapDown(
TapDownDetails details) → void - Called when the pointer tap has contacted the screen in behavior.
-
handleTapUp(
TapUpDetails details) → void - Called when pointer has stopped contacting screen in behavior.
-
hide(
) → void - Hides the crosshair if it is displayed.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
onPaint(
PaintingContext context, Offset offset, SfChartThemeData chartThemeData, ThemeData themeData) → void - Override this method to customize the crosshair tooltips & line rendering.
-
show(
dynamic x, double y, [String coordinateUnit = 'point']) → void - Displays the crosshair at the specified x and y-positions.
-
showByIndex(
int pointIndex) → void - Displays the crosshair at the specified point index.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
override