Highcharts - 保持工具提示在点击时显示

问题描述

我有一个 highcharts 图表，我允许用户动态创建他们自己的标志.现在我希望能够单击标志本身并能够一直显示它的工具提示，直到我再次单击该标志.这样做的原因是为了让用户给点赋予特殊的含义，当他们将图形保存为图像时，我希望它显示他们留下的工具提示信息.

I have a highcharts graph, and I allowed the user to dynamically create their own Flags. Now I want to be able to click on the flag itself and be able to keep it's tooltip showing the whole time until I click on the flag again. The reason for this is to allow the user to give special meaning to points, and when they save the graph as an image, I want it to show the tooltip information they left on.

任何人都知道如何做到这一点或去做这件事吗?我不知道如何访问标志工具提示

Anyone know how to do this or go about this? I can't figure out how to access the flags tooltip

plotOptions: {
            series: {
                allowPointSelect: true,
                animation: false,
                dataGrouping: {
                    force: true,
                    smoothed: true
                }
            },
            line: {
                allowPointSelect: true,
                animation: false,
                point: {
                    events: {
                        click: function () {
                            var thePoint = this;
                            var previousFlag = findFlag(thePoint);
                            if (previousFlag != null) {
                                previousFlag.remove();
                            } else {
                                createFlagForm(thePoint);
                            }
                        }
                    }
                }
            },
            flags: {
                point: {
                    events: {
                        click: function() { 
                            //How to access the tooltip? this means the flag point itself
                        }
                    }
                },
                tooltip: {
                    useHTML: true,
                    xDateFormat: "%B-%e-%Y %H:%M"
                }
            }
        },

推荐答案

我刚刚搞定了这个.当您单击一个点时，它将保留工具提示.它通过克隆工具提示 svg 元素并将其附加到绘图来做到这一点.

I just whipped this up. When you click a point it will persist the tooltip. It does this by cloning the tooltip svg element and appending it to the plot.

这是一个小提琴.

$(function () {
    cloneToolTip = null;
    chart = new Highcharts.Chart({
        chart: {
            renderTo: 'container'
        },
        xAxis: {
            categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
        },

        plotOptions: {
            series: {
                cursor: 'pointer',
                point: {
                    events: {
                        click: function() { 
                            if (cloneToolTip)
                            {
                                chart.container.firstChild.removeChild(cloneToolTip);
                            }
                            cloneToolTip = this.series.chart.tooltip.label.element.cloneNode(true);
                            chart.container.firstChild.appendChild(cloneToolTip);
                        }
                    }
                }
            }
        },

        series: [{
            data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4]        
        }]
    });
});​

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