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