@nativescript-community/ui-chart/listener/PieRadarChartTouchListener.d.ts

A powerful chart / graph plugin, supporting line, bar, pie, radar, bubble, and candlestick charts as well as scaling, panning and animations.

import { GestureStateEventData, GestureTouchEventData, RotationGestureHandler, TapGestureHandler } from '@nativescript-community/gesturehandler';
import { PieRadarChartBase } from '../charts/PieRadarChartBase';
import { ChartTouchListener } from './ChartTouchListener';
/**
 * TouchListener for Pie- and RadarChart with handles all
 * touch interaction.
 *

 */
export declare class PieRadarChartTouchListener extends ChartTouchListener<PieRadarChartBase<any, any, any>> {
    rotationGestureHandler: RotationGestureHandler;
    tapGestureHandler: TapGestureHandler;
    /**
     * the angle where the dragging started
     */
    private mStartAngle;
    private _velocitySamples;
    private mDecelerationLastTime;
    private mDecelerationAngularVelocity;
    /**
     * Constructor with initialization parameters.
     *
     * @param chart instance of the chart
     */
    TAP_HANDLER_TAG: any;
    ROTATION_HANDLER_TAG: any;
    constructor(chart: PieRadarChartBase<any, any, any>);
    getTapGestureOptions(): {
        numberOfTaps?: number;
        maxDurationMs?: number;
        maxDelayMs?: number;
        maxDeltaX?: number;
        maxDeltaY?: number;
        maxDist?: number;
        minPointers?: number;
        enabled?: boolean;
        shouldCancelWhenOutside?: boolean;
        waitFor?: number[];
        simultaneousHandlers?: number[];
        nativeGetterKey?: string;
        gestureTag: any;
    };
    getRotationGestureOptions(): {
        enabled?: boolean;
        shouldCancelWhenOutside?: boolean;
        waitFor?: number[];
        simultaneousHandlers?: number[];
        nativeGetterKey?: string;
        gestureTag: any;
    };
    getOrCreateRotationGestureHandler(): RotationGestureHandler;
    getOrCreateTapGestureHandler(): TapGestureHandler;
    setRotation(enabled: boolean): void;
    setTap(enabled: boolean): void;
    dispose(): void;
    init(): void;
    /**
     * Returns the correct translation depending on the provided x and y touch
     * points
     *
     * @param x
     * @param y
     * @return
     */
    getTrans(x: any, y: any): {
        x: number;
        y: number;
    };
    /**
     * sets the starting angle of the rotation, this is only used by the touch
     * listener, x and y is the touch position
     *
     * @param x
     * @param y
     */
    setGestureStartAngle(x: any, y: any): void;
    /**
     * updates the view rotation depending on the given touch position, also
     * takes the starting angle into consideration
     *
     * @param x
     * @param y
     */
    updateGestureRotation(x: any, y: any): void;
    /**
     * ################ ################ ################ ################
     */
    /** GESTURE RECOGNITION BELOW */
    onRotationGesture(event: GestureStateEventData): void;
    onRotationGestureTouch(event: GestureTouchEventData): void;
    onTapGesture(event: GestureStateEventData): void;
    private resetVelocity;
    private sampleVelocity;
    private calculateVelocity;
    /**
     * Sets the deceleration-angular-velocity to 0f
     */
    stopDeceleration(): void;
    computeScroll(): void;
}