Function mouseDown

src/uPlot.js:3198–3217

(e, src, _l, _t, _w, _h, _i)

	let downSelectHeight;

	function mouseDown(e, src, _l, _t, _w, _h, _i) {
		dragging = true;
		dragX = dragY = drag._x = drag._y = false;

		cacheMouse(e, src, _l, _t, _w, _h, _i, true, false);

		if (e != null) {
			onMouse(mouseup, doc, mouseUp, false);
			pubSync(mousedown, self, mouseLeft0, mouseTop0, plotWidCss, plotHgtCss, null);
		}

		let { left, top, width, height } = select;

		downSelectLeft   = left;
		downSelectTop    = top;
		downSelectWidth  = width;
		downSelectHeight = height;

	//	hideSelect();
	}

	function mouseUp(e, src, _l, _t, _w, _h, _i) {
		dragging = drag._x = drag._y = false;