Method constructor

src/js/timenav/TimeScale.js:28–61

(timeline_config, options)

export class TimeScale {

    constructor(timeline_config, options) {

        var slides = timeline_config.events;
        this._scale = timeline_config.scale;

        options = mergeData({ // establish defaults
            display_width: 500,
            screen_multiplier: 3,
            max_rows: null
        }, options);

        this._display_width = options.display_width;
        this._screen_multiplier = options.screen_multiplier;
        this._pixel_width = this._screen_multiplier * this._display_width;

        this._group_labels = undefined;
        this._positions = [];
        this._pixels_per_milli = 0;

        this._earliest = timeline_config.getEarliestDate().getTime();
        this._latest = timeline_config.getLatestDate().getTime();
        this._span_in_millis = this._latest - this._earliest;
        if (this._span_in_millis <= 0) {
            this._span_in_millis = this._computeDefaultSpan(timeline_config);
        }
        this._average = (this._span_in_millis) / slides.length;

        this._pixels_per_milli = this.getPixelWidth() / this._span_in_millis;

        this._axis_helper = getBestHelper(this);

        this._scaled_padding = (1 / this.getPixelsPerTick()) * (this._display_width / 2)
        this._computePositionInfo(slides, options.max_rows);
    }

    _computeDefaultSpan(timeline_config) {
        // this gets called when all events are at the same instant,