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

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

import { Chart } from '../charts/Chart';
import { Highlight } from '../highlight/Highlight';
export declare enum ChartGesture {
    NONE = 0,
    DRAG = 1,
    X_ZOOM = 2,
    Y_ZOOM = 3,
    PINCH_ZOOM = 4,
    ROTATE = 5,
    SINGLE_TAP = 6,
    DOUBLE_TAP = 7,
    LONG_PRESS = 8,
    FLING = 9
}
/**
 * Created by philipp on 12/06/15.
 */
export declare abstract class ChartTouchListener<T extends Chart<any, any, any>> {
    /**
     * the last touch gesture that has been performed
     **/
    protected mLastGesture: ChartGesture;
    protected static NONE: number;
    protected static DRAG: number;
    protected static X_ZOOM: number;
    protected static Y_ZOOM: number;
    protected static PINCH_ZOOM: number;
    protected static POST_ZOOM: number;
    protected static ROTATE: number;
    /**
     * integer field that holds the current touch-state
     */
    protected mTouchMode: number;
    /**
     * the last highlighted object (via touch)
     */
    lastHighlighted: Highlight;
    /**
     * the chart the listener represents
     */
    readonly chart: T;
    constructor(chart: T);
    dispose(): void;
    init(): void;
    /**
     * returns the touch mode the listener is currently in
     */
    get touchMode(): number;
    /**
     * Returns the last gesture that has been performed on the chart.
     */
    get lastGesture(): ChartGesture;
    /**
     * Perform a highlight operation.
     *
     * @param e
     */
    protected performHighlight(h: Highlight): void;
    /**
     * returns the distance between two points
     *
     * @param eventX
     * @param startX
     * @param eventY
     * @param startY
     * @return
     */
    protected static distance(eventX: any, startX: any, eventY: any, startY: any): number;
}