@nativescript-community/ui-chart/formatter/ValueFormatter.js

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

/**
 * Class to format all values before they are drawn as labels.
 */
export class ValueFormatter {
    /**
     * Called when drawing any label, used to change numbers into formatted strings.
     *
     * @param value float to be formatted
     * @return formatted string label
     */
    getFormattedValue(value, entry) {
        return value + '';
    }
    /**
     * Used to draw axis labels, calls {@link #getFormattedValue} by default.
     *
     * @param value float to be formatted
     * @param axis  axis being labeled
     * @return formatted string label
     */
    getAxisLabel(value, axis) {
        return this.getFormattedValue(value);
    }
    /**
     * Used to draw bar labels, calls {@link #getFormattedValue} by default.
     *
     * @param value current value to be formatted
     * @return formatted string label
     */
    getBarLabel(value, entry) {
        return this.getFormattedValue(value, entry);
    }
    /**
     * Used to draw stacked bar labels, calls {@link #getFormattedValue} by default.
     *
     * @param value        current value to be formatted
     * @param entry stacked entry being labeled, contains all Y values
     * @return formatted string label
     */
    getBarStackedLabel(value, entry) {
        return this.getFormattedValue(value, entry);
    }
    /**
     * Used to draw line and scatter labels, calls {@link #getFormattedValue} by default.
     *
     * @param entry point being labeled, contains X value
     * @return formatted string label
     */
    getPointLabel(value, entry) {
        return this.getFormattedValue(value, entry);
    }
    /**
     * Used to draw pie value labels, calls {@link #getFormattedValue} by default.
     *
     * @param value    float to be formatted, may have been converted to percentage
     * @param entry slice being labeled, contains original, non-percentage Y value
     * @return formatted string label
     */
    getPieLabel(value, entry) {
        return this.getFormattedValue(value, entry);
    }
    /**
     * Used to draw radar value labels, calls {@link #getFormattedValue} by default.
     *
     * @param entry entry being labeled
     * @return formatted string label
     */
    getRadarLabel(value, entry) {
        return this.getFormattedValue(value, entry);
    }
    /**
     * Used to draw bubble size labels, calls {@link #getFormattedValue} by default.
     *
     * @param entry bubble being labeled, also contains X and Y values
     * @return formatted string label
     */
    getBubbleLabel(value, entry) {
        return this.getFormattedValue(value, entry);
    }
    /**
     * Used to draw high labels, calls {@link #getFormattedValue} by default.
     *
     * @param entry candlestick being labeled
     * @return formatted string label
     */
    getCandleLabel(value, entry) {
        return this.getFormattedValue(value, entry);
    }
}
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