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The ZoomExtentsModifier provides double-tap or double-click to zoom-to-fit (Zoom Extents) behavior on a 2D SciChartSurface within SciChart - High Performance JavaScript Charts

remarks

To apply the ZoomExtentsModifier to a SciChartSurface and add drag to zoom behavior, use the following code:

const sciChartSurface: SciChartSurface;
sciChartSurface.chartModifiers.add(new ZoomExtentsModifier());

Animation of the zoom extents be controlled via the ZoomExtentsModifier.isAnimated, ZoomExtentsModifier.animationDuration and ZoomExtentsModifier.easingFunction properties.

Hierarchy

Implements

Index

Constructors

constructor

Properties

animationDuration

animationDuration: number = 400

Defines the duration of animations when zooming in milliseconds

applyToAxes

applyToAxes: boolean = true

Whether the modifier applies when the mouse is over the axes. Default true.

applyToSeriesViewRect

applyToSeriesViewRect: boolean = true

Whether the modifier applies when the mouse is over the area where series are drawn (ie not over the axes). Default true.

Protected changedPropertiesList

changedPropertiesList: string[] = []

easingFunction

easingFunction: TEasingFn = easing.outExpo

Defines the easing function for animation. See TEasingFn for a range of functions

Readonly id

id: string

A unique Id for the IChartModifierBase

invalidateParentCallback

invalidateParentCallback: () => void

A callback to invalidate the parent SciChartSurfaceBase

Type declaration

    • (): void
    • Returns void

isAnimated

isAnimated: boolean = true

When true, the Zoom operations are animated. See also animationDuration and easingFunction

Protected isAttachedProperty

isAttachedProperty: boolean

Protected isEnabledProperty

isEnabledProperty: boolean = true

modifierGroup

modifierGroup: string

Specifies a string ID to group modifiers.

remarks

When one receives a mouse event, all modifiers in the same group receive the event.

Protected mousePoint

mousePoint: Point

Optional onZoomExtents

onZoomExtents: (sciChartSurface: SciChartSurface) => boolean

A function to execute when zoomExtents is activated. If this exists and returns false, the builtin behaviour is ignored;

Type declaration

Protected receiveHandledEventsProperty

receiveHandledEventsProperty: boolean

Readonly type

type: ZoomExtents = EChart2DModifierType.ZoomExtents

Protected typeMap

typeMap: Map<string, string> = new Map<string, string>()

Protected xAxisIdProperty

xAxisIdProperty: string = AxisCore.DEFAULT_AXIS_ID

xyDirection

xyDirection: EXyDirection = EXyDirection.XyDirection

Protected yAxisIdProperty

yAxisIdProperty: string = AxisCore.DEFAULT_AXIS_ID

Accessors

canReceiveMouseEvents

  • get canReceiveMouseEvents(): boolean

executeOn

  • The operation that modifier should respond to

    inheritdoc

    Returns EExecuteOn

  • The operation that modifier should respond to

    inheritdoc

    Parameters

    Returns void

isAttached

  • get isAttached(): boolean

isEnabled

  • get isEnabled(): boolean
  • set isEnabled(isEnabled: boolean): void
  • When true, the modifier is enabled

    inheritdoc

    Returns boolean

  • When true, the modifier is enabled

    inheritdoc

    Parameters

    • isEnabled: boolean

    Returns void

modifierType

parentSurface

receiveHandledEvents

  • get receiveHandledEvents(): boolean
  • set receiveHandledEvents(receiveHandledEvents: boolean): void
  • When true, this modifier should receive events which have been handled by modifiers higher up in the call hierachy.

    inheritdoc

    Returns boolean

  • When true, this modifier should receive events which have been handled by modifiers higher up in the call hierachy.

    inheritdoc

    Parameters

    • receiveHandledEvents: boolean

    Returns void

xAxisId

  • get xAxisId(): string
  • set xAxisId(xAxisId: string): void
  • inheritdoc

    Returns string

  • inheritdoc

    Parameters

    • xAxisId: string

    Returns void

yAxisId

  • get yAxisId(): string
  • set yAxisId(yAxisId: string): void
  • inheritdoc

    Returns string

  • inheritdoc

    Parameters

    • yAxisId: string

    Returns void

Methods

applyTheme

delete

  • delete(): void
  • Deletes native (WebAssembly) memory used by this type, after which it cannot be used.

    remarks

    Call .delete() before finishing with the object to ensure that WebAssmembly memory leaks do not occur.

    All elements within SciChart's High Performance Realtime JavaScript Charts which implement IDeletable must be deleted manually to free native (WebAssembly) memory

    Returns void

Protected getAllSeries

Protected growBy

  • Grows the Axis by a fraction around the mouse point

    Parameters

    • mousePoint: Point

      the X,Y location of the mouse at the time of the operation

    • axis: AxisBase2D

      the Axis to grow or shrink

    • fraction: number

      the fraction, e.g. 0.1 grows the axis by 10%

    Returns void

modifierDoubleClick

modifierMouseDown

modifierMouseEnter

modifierMouseLeave

modifierMouseMove

modifierMouseUp

modifierMouseWheel

modifierPointerCancel

Protected notifyPropertyChanged

  • notifyPropertyChanged(propertyName: string): void

onAttach

  • onAttach(): void

onAttachSeries

onDetach

  • onDetach(): void

onDetachSeries

onParentSurfaceRendered

  • onParentSurfaceRendered(): void

setParentSurface

Protected testPropertyChanged

  • testPropertyChanged(propertyName: string): boolean

toJSON

  • toJSON(): { options: {}; type: string }

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