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Highcharts.Chart.prototype.callbacks.push(function(chart) {
var hasTouch = hasTouch = document.documentElement.ontouchstart !== undefined,
mouseTracker = chart.tracker,
container = chart.container,
mouseMove;
mouseMove = function (e) {
// let the system handle multitouch operations like two finger scroll
// and pinching
if (e && e.touches && e.touches.length > 1) {
return;
}
// normalize
e = mouseTracker.normalizeMouseEvent(e);
if (!hasTouch) { // not for touch devices
e.returnValue = false;
}
var chartX = e.chartX,
chartY = e.chartY,
isOutsidePlot = !chart.isInsidePlot(chartX - chart.plotLeft, chartY - chart.plotTop);
// cancel on mouse outside
if (isOutsidePlot) {
/*if (!lastWasOutsidePlot) {
// reset the tracker
resetTracker();
}*/
// drop the selection if any and reset mouseIsDown and hasDragged
//drop();
if (chartX < chart.plotLeft) {
chartX = chart.plotLeft;
} else if (chartX > chart.plotLeft + chart.plotWidth) {
chartX = chart.plotLeft + chart.plotWidth;
}
if (chartY < chart.plotTop) {
chartY = chart.plotTop;
} else if (chartY > chart.plotTop + chart.plotHeight) {
chartY = chart.plotTop + chart.plotHeight;
}
}
if (chart.mouseIsDown && e.type !== 'touchstart') { // make selection
// determine if the mouse has moved more than 10px
hasDragged = Math.sqrt(
Math.pow(mouseTracker.mouseDownX - chartX, 2) +
Math.pow(mouseTracker.mouseDownY - chartY, 2)
);
if (hasDragged > 10) {
var clickedInside = chart.isInsidePlot(mouseTracker.mouseDownX - chart.plotLeft, mouseTracker.mouseDownY - chart.plotTop);
// make a selection
if (chart.hasCartesianSeries && (mouseTracker.zoomX || mouseTracker.zoomY) && clickedInside) {
if (!mouseTracker.selectionMarker) {
mouseTracker.selectionMarker = chart.renderer.rect(
chart.plotLeft,
chart.plotTop,
zoomHor ? 1 : chart.plotWidth,
zoomVert ? 1 : chart.plotHeight,
0
)
.attr({
fill: mouseTracker.options.chart.selectionMarkerFill || 'rgba(69,114,167,0.25)',
zIndex: 7
})
.add();
}
}
// adjust the width of the selection marker
if (mouseTracker.selectionMarker && zoomHor) {
var xSize = chartX - mouseTracker.mouseDownX;
mouseTracker.selectionMarker.attr({
width: mathAbs(xSize),
x: (xSize > 0 ? 0 : xSize) + mouseTracker.mouseDownX
});
}
// adjust the height of the selection marker
if (mouseTracker.selectionMarker && zoomVert) {
var ySize = chartY - mouseTracker.mouseDownY;
mouseTracker.selectionMarker.attr({
height: mathAbs(ySize),
y: (ySize > 0 ? 0 : ySize) + mouseTracker.mouseDownY
});
}
// panning
if (clickedInside && !mouseTracker.selectionMarker && mouseTracker.options.chart.panning) {
chart.pan(chartX);
}
}
} else if (!isOutsidePlot) {
// show the tooltip
mouseTracker.onmousemove(e);
}
lastWasOutsidePlot = isOutsidePlot;
}
container.onmousemove = container.ontouchstart = container.ontouchmove = mouseMove;
});
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