Commit | Line | Data |
---|---|---|
e2a5e398 RK |
1 | // Use this as a template for new Gallery entries. |
2 | Gallery.register( | |
3 | 'link-interaction', | |
4 | { | |
5 | name: 'Link Interaction', | |
6 | setup: function(parent) { | |
7 | parent.innerHTML = | |
8 | "<div id='div_g'></div>" + | |
9 | "<b>Zoom:</b>" + | |
10 | "<a href='#' onclick='zoom(3600)'>hour</a> " + | |
11 | "<a href='#' onclick='zoom(86400)'>day</a> " + | |
12 | "<a href='#' onclick='zoom(604800)'>week</a> " + | |
13 | "<a href='#' onclick='zoom(30 * 86400)'>month</a> " + | |
14 | "<a href='#' onclick='reset()'>full</a> " + | |
15 | "<b>Pan:</b> " + | |
16 | "<a href='#' onclick='pan(-1)'>left</a> " + | |
17 | "<a href='#' onclick='pan(+1)'>right</a> "; | |
18 | }, | |
19 | run: function() { | |
20 | var r = [ ]; | |
21 | var base_time = Date.parse("2008/07/01"); | |
22 | var num = 24 * 0.25 * 365; | |
23 | for (var i = 0; i < num; i++) { | |
24 | r.push([ new Date(base_time + i * 3600 * 1000), | |
25 | i + 50 * (i % 60), // line | |
26 | i * (num - i) * 4.0 / num // parabola | |
27 | ]); | |
28 | } | |
29 | var orig_range = [ r[0][0].valueOf(), r[r.length - 1][0].valueOf() ]; | |
30 | g = new Dygraph( | |
31 | document.getElementById("div_g"), | |
32 | r, { | |
33 | rollPeriod: 7, | |
34 | animatedZooms: true, | |
35 | // errorBars: true, | |
36 | width: 600, | |
37 | height: 300, | |
38 | labels: ["Date", "a", "b"] | |
39 | } | |
40 | ); | |
41 | ||
42 | var desired_range = null; | |
43 | function approach_range() { | |
44 | if (!desired_range) return; | |
45 | // go halfway there | |
46 | var range = g.xAxisRange(); | |
47 | if (Math.abs(desired_range[0] - range[0]) < 60 && | |
48 | Math.abs(desired_range[1] - range[1]) < 60) { | |
49 | g.updateOptions({dateWindow: desired_range}); | |
50 | // (do not set another timeout.) | |
51 | } else { | |
52 | var new_range; | |
53 | new_range = [0.5 * (desired_range[0] + range[0]), | |
54 | 0.5 * (desired_range[1] + range[1])]; | |
55 | g.updateOptions({dateWindow: new_range}); | |
56 | animate(); | |
57 | } | |
58 | } | |
59 | function animate() { | |
60 | setTimeout(approach_range, 50); | |
61 | } | |
62 | ||
63 | window.zoom = function(res) { | |
64 | var w = g.xAxisRange(); | |
65 | desired_range = [ w[0], w[0] + res * 1000 ]; | |
66 | animate(); | |
67 | } | |
68 | ||
69 | window.reset= function() { | |
70 | desired_range = orig_range; | |
71 | animate(); | |
72 | } | |
73 | ||
74 | window.pan = function(dir) { | |
75 | var w = g.xAxisRange(); | |
76 | var scale = w[1] - w[0]; | |
77 | var amount = scale * 0.25 * dir; | |
78 | desired_range = [ w[0] + amount, w[1] + amount ]; | |
79 | animate(); | |
80 | } | |
81 | } | |
82 | }); |