| 1 | <!DOCTYPE html> |
| 2 | <html> |
| 3 | <head> |
| 4 | <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7; IE=EmulateIE9"> |
| 5 | <title>crosshairs</title> |
| 6 | <!--[if IE]> |
| 7 | <script type="text/javascript" src="../excanvas.js"></script> |
| 8 | <![endif]--> |
| 9 | <!-- |
| 10 | For production (minified) code, use: |
| 11 | <script type="text/javascript" src="dygraph-combined.js"></script> |
| 12 | --> |
| 13 | <script type="text/javascript" src="../dygraph-dev.js"></script> |
| 14 | |
| 15 | <script type="text/javascript" src="data.js"></script> |
| 16 | <style type="text/css"> |
| 17 | .line { |
| 18 | visibility: hidden; |
| 19 | background-color: black; |
| 20 | position: absolute; |
| 21 | pointer-events: none; /* let mouse events fall through to the chart */ |
| 22 | } |
| 23 | .yline { |
| 24 | width: 100%; |
| 25 | height: 1px; |
| 26 | } |
| 27 | .xline { |
| 28 | height: 100%; |
| 29 | width: 1px; |
| 30 | } |
| 31 | </style> |
| 32 | </head> |
| 33 | <body> |
| 34 | <p>Hover, click and zoom to test the callbacks:</p> |
| 35 | <div id="div_g" style="width:600px; height:300px; position:relative;"> |
| 36 | </div> |
| 37 | |
| 38 | <script type="text/javascript"> |
| 39 | var lines = []; |
| 40 | var xline; |
| 41 | g = new Dygraph( |
| 42 | document.getElementById("div_g"), |
| 43 | NoisyData, { |
| 44 | rollPeriod: 7, |
| 45 | showRoller: true, |
| 46 | errorBars: true, |
| 47 | |
| 48 | highlightCallback: function(e, x, pts) { |
| 49 | for (var i = 0; i < pts.length; i++) { |
| 50 | var y = pts[i].canvasy; |
| 51 | lines[i].style.visibility = "visible"; |
| 52 | lines[i].style.top = y + "px"; |
| 53 | if (i == 0) xline.style.left = pts[i].canvasx + "px"; |
| 54 | } |
| 55 | xline.style.visibility = "visible"; |
| 56 | }, |
| 57 | |
| 58 | unhighlightCallback: function(e) { |
| 59 | for (var i = 0; i < 2; i++) { |
| 60 | lines[i].style.visibility = "hidden"; |
| 61 | } |
| 62 | xline.style.visibility = "hidden"; |
| 63 | } |
| 64 | } |
| 65 | ); |
| 66 | |
| 67 | for (var i = 0; i < 2; i++) { |
| 68 | var line = document.createElement("div"); |
| 69 | line.className = "line yline"; |
| 70 | document.getElementById("div_g").appendChild(line); |
| 71 | lines.push(line); |
| 72 | } |
| 73 | |
| 74 | xline = document.createElement("div"); |
| 75 | xline.className = "line xline"; |
| 76 | xline.style.top = "0px"; |
| 77 | document.getElementById("div_g").appendChild(xline); |
| 78 | </script> |
| 79 | </body> |
| 80 | </html> |