openstack
/
stackviz
Code Issues Proposed changes

add a cursor to show time at a given position on the timeline

This commit is contained in:
Tim Buckley 2015-07-22 11:46:54 -06:00
parent d71b5fffd3
commit a9d2b956fd
1 changed files with 43 additions and 1 deletions
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44
stackviz/static/js/timeline.js
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@ -24,7 +24,7 @@ var initTimeline = function(options, data, timeExtents) {
"use strict";
// http://bl.ocks.org/bunkat/2338034
var margin = { top: 10, right: 10, bottom: 10, left: 80 };
var margin = { top: 20, right: 10, bottom: 10, left: 80 };
var width = 800 - margin.left - margin.right;
var height = 350 - margin.top - margin.bottom;
@ -69,6 +69,24 @@ var initTimeline = function(options, data, timeExtents) {
var itemGroups = main.append("g");
var cursorGroup = main.append("g")
.style("opacity", 0)
.style("pointer-events", "none");
var cursor = cursorGroup.append("line")
.attr("x1", 0)
.attr("x2", 0)
.attr("y1", y1(-0.1))
.attr("stroke", "blue");
var cursorText = cursorGroup.append("text")
.attr("x", 0)
.attr("y", -10)
.attr("dy", "-.5ex")
.text("asdfasdf")
.style("text-anchor", "middle")
.style("font", "9px sans-serif");
var mini = chart.append("g")
.attr("transform",
"translate(" + margin.left + "," + (mainHeight + margin.top) + ")")
@ -90,6 +108,28 @@ var initTimeline = function(options, data, timeExtents) {
.x(x)
.extent([start, reducedEnd]);
chart.on("mouseout", function() {
cursorGroup.style("opacity", 0);
});
chart.on("mousemove", function() {
var pos = d3.mouse(this);
var px = pos[0];
var py = pos[1];
if (px >= margin.left && px < (width + margin.left)
&& py > margin.top && py < (mainHeight + margin.top)) {
var relX = px - margin.left;
var currentTime = new Date(x1.invert(relX));
cursorGroup.style("opacity", "0.5");
cursorGroup.attr("transform", "translate(" + relX + ", 0)");
cursorText.text(d3.time.format("%X")(currentTime));
}
});
function updateLanes() {
var lines = laneLines.selectAll(".laneLine")
.data(data, function(d) { return d.key; });
@ -118,6 +158,8 @@ var initTimeline = function(options, data, timeExtents) {
labels.attr("y", function(d, i) { return y1(i + 0.5); });
labels.exit().remove();
cursor.attr("y2", y1(data.length - 0.1));
}
function updateItems() {