I'd like the cursor to be a crosshair when it is over the chart area of a highcharts graph, to indicate to users that they can zoom in. However, I don't want the cursor to be a crosshair when it's over other areas such as the legend or axes.
Is this possible?
You can use built-in method chart.isInsidePlot(plotX, plotY). Example: http://jsfiddle.net/2eje4xxb/1/
Code example:
container.on("mousemove", function (event) {
var chart = container.highcharts();
if (chart.isInsidePlot(event.pageX - chart.plotLeft, event.pageY - chart.plotTop)) {
$("body").css({
cursor: "crosshair"
});
} else {
$("body").css({
cursor: "default"
});
}
});
Another idea is to utilize chart.plotBackgroundColor option, which creates rect, which can obtain CSS styles:
chart: {
zoomType: 'x',
plotBackgroundColor: "rgba(10,0,0,0)", // dummy color, to create an element
events: {
load: function(){
if(this.plotBackground) {
this.plotBackground.toFront().css({ // move on top to get all events
cursor: "crosshair"
});
}
}
}
},
And demo: http://jsfiddle.net/2eje4xxb/2/
Yes it is possible. You can write code to set the cursor style in the mouse events.
Please find the jsfiddle here - http://jsfiddle.net/3Lu7bzmn/5/
CSS
.cursorCrossHair{
cursor : crosshair
}
.cursorDefault{
cursor : default
}
JS - Shown only specific piece of code which is required to change the cursor. The id of the div used to render the highcharts is called "container". Please refer the jsfiddle to see the full working example.
$('#container').highcharts({
chart: {
plotOptions: {
series: {
point: {
events: {
mouseOver: function () {
$("#container").removeClass("cursorDefault").addClass("cursorCrossHair");
},
mouseOut: function () {
$("#container").removeClass("cursorCrossHair").addClass("cursorDefault");
}
}
}
}
},
});
});
Related
I am new to high charts.
Below is my partial code in a function when creating a mapChart, what it does is that it only show the matching region (with cur_state) as red and others as blue.
chart: {
backgroundColor: null,
map: 'countries/au/au-all',
events: {
load: function () {
// place1
this.series[0].data = this.series[0].data.map((el) => {
// place2
if (el['hc-key'] == region_dict[cur_state][1]) {
el.color = "#ff0000";
return el;
}
el.color = "blue"
return el
})
this.update({
series: [{
data: this.series[0].data
}]
})
}
}
},
When the value of cur_state is changed, I recall the function which contains the map graph, hoping that the corresponding region has color update.
This is the first time I call the function:
This is after second time I call the function, the coloring and hovering effect are gone:
After testing, I realised that both place1 and place2 are executed when the chart is firstly created, and only place1 is executed when the chart is re-created.
My other part of code has similar structure as this: https://jsfiddle.net/gh/get/library/pure/highslide-software/highcharts.com/tree/master/samples/mapdata/countries/au/au-all
How can I achieve the expected outcome?
Thanks for helping
The best solution in your case seems to be to use render event and change the color on the SVG level. Example:
chart: {
...,
events: {
render: function() {
this.series[0].points.forEach(function(point) {
if (point['hc-key'] == state) {
point.graphic.attr({
fill: 'red'
});
}
});
}
}
}
Live demo: https://jsfiddle.net/BlackLabel/x69pLcyo/
API Reference:
https://api.highcharts.com/highcharts/chart.events.render
https://api.highcharts.com/class-reference/Highcharts.SVGElement#attr
I am working on an app where I need to show drilldown chart. I am using highcharts for this, I want to fire the click event when user clicks on the bars of second chart (drilled one).
I am using code but this is firing the event on the first chart also. Is there a way to fire it on the second chart only? or check if event is raised from which chart?
plotOptions: {
series: {
events:{
click: function (event) {
console.log(event);
alert("testing" + event.point.name)
}
}
}
}
Sample is here - https://highcharts-angular-drilldown-zqmyd9.stackblitz.io/
Try to define your chart as a global variable and add the condition to check if the chart.drilldownUpButton exists into your click callback.
Demo: https://jsfiddle.net/BlackLabel/uhbored9/
plotOptions: {
series: {
events: {
click: function(event) {
if (chart.drillUpButton) {
alert("testing" + event.point.name)
}
}
}
}
},
I need to attach a click event to the column chart crosshair, and have found the black label "customEvents.js" module:
https://github.com/blacklabel/custom_events
As a beginner I just can't seem to figure out how to get this working. I would be grateful if someone could modify the demo fiddle to show me how it's done! I've tried placing the "crosshair" tag inside "plotOptions", inside "xAxis", and on its own, but without success.
https://jsfiddle.net/BlackLabel/Utx8g/
crosshair: {
enabled: true,
events: {
dblclick: function () {
$('#report').html('dbclick on xAxis label');
},
click: function () {
$('#report').html('click on xAxis label');
},
contextmenu: function () {
$('#report').html('context menu on xAxis label');
}
}
}
The issue looks like a regression, so I reported it on the plugin github: https://github.com/blacklabel/custom_events/issues/133
As a workaround, you can add pointerEvents: 'auto' style.
(function(H) {
H.wrap(H.Axis.prototype, 'drawCrosshair', function(proceed) {
proceed.apply(this, Array.prototype.slice.call(arguments, 1));
if (this.cross) {
this.cross.css({
pointerEvents: 'auto'
});
}
});
})(Highcharts);
Live demo: http://jsfiddle.net/BlackLabel/pfkmg39x/
Docs: https://www.highcharts.com/docs/extending-highcharts
How to determine the coordinates of the point where the CLICK was made. If the CLICK was made exactly on the line of the graphic (not on the point of the graphic).
chart: {
events: {
click: function(event) {}
}
},
Not work
I think you should use plotOptions.series.events.click, not chart.events.click. Then simply set tooltip.snap = 1 to get clicks only when cursor is really close to the line/point. To get coordinates use event.chartX and event.chartY:
tooltip: {
snap: 1
},
plotOptions: {
series: {
events: {
click: function (e) {
console.log(e.chartX, e.chartY);
}
},
}
},
Demo: http://jsfiddle.net/dxj7wemh/
I have a scatter plot in Highcharts and I would like to connect points with a line when hovering over a point.
Is this possible?
You can use scatter serie with lineWidth set as 2, then hide a SVG path (line) and catch mouseOver / mouseOut events to manipulate graphic.
Example:
http://jsfiddle.net/sbochan/t96cds7o/3/
plotOptions: {
series: {
point: {
events: {
mouseOver: function () {
this.series.graph.show();
}
}
},
events: {
mouseOut: function () {
this.graph.hide();
}
}
}
},
// callback
setTimeout(function(){
chart.series[0].graph.hide();
},1);