highcharts - Can i snap Highstock navigator extremes to existing points?

Question

I'm looking for a way to snap the users min and max extremes to existing points when they use the navigator slider. Is this something i can accomplish with existing options or has anyone else accomplished this? The ultimate goal here would be if i set two points in a series, for example (1365444905, 1) and (1365444919, 10) when the user slides the bar i should only ever get back 1365444905 or 1365444919.

Thanks.

Answer 1

不幸的是，使用现有选项无法做到这一点。我认为它需要对导航器mouseMoveHandler方法进行一些修改。你可以在这里找到它：https ://github.com/highslide-software/highcharts.com/blob/5b1f3b0bc492252bbe0e283ec698480dbc179ba5/js/parts/Scroller.js#L651

这是您应该查看的功能部分：

// drag left handle
if (scroller.grabbedLeft) {
    hasDragged = true;
    scroller.render(0, 0, chartX - navigatorLeft, scroller.otherHandlePos);

// drag right handle
} else if (scroller.grabbedRight) {
    hasDragged = true;
    scroller.render(0, 0, scroller.otherHandlePos, chartX - navigatorLeft);

// drag scrollbar or open area in navigator
} else if (scroller.grabbedCenter) {

    hasDragged = true;
    if (chartX < dragOffset) { // outside left
        chartX = dragOffset;
    } else if (chartX > navigatorWidth + dragOffset - range) { // outside right
        chartX = navigatorWidth + dragOffset - range;
    }

    scroller.render(0, 0, chartX - dragOffset, chartX - dragOffset + range);
}