BarLineChartTouchListener.java 文件源码

/**
 * Constructor with initialization parameters.
 *
 * @param chart               instance of the chart
 * @param touchMatrix         the touch-matrix of the chart
 * @param dragTriggerDistance the minimum movement distance that will be interpreted as a "drag" gesture in dp (3dp equals
 *                            to about 9 pixels on a 5.5" FHD screen)
 */
public BarLineChartTouchListener(BarLineChartBase<? extends BarLineScatterCandleBubbleData<? extends
        IBarLineScatterCandleBubbleDataSet<? extends Entry>>> chart, Matrix touchMatrix, float dragTriggerDistance) {
    super(chart);
    this.mMatrix = touchMatrix;

    this.mDragTriggerDist = Utils.convertDpToPixel(dragTriggerDistance);

    this.mMinScalePointerDistance = Utils.convertDpToPixel(3.5f);
}