[dygraphs.git] / tests / drawing.html

<!DOCTYPE html>
<html>
  <head>
    <link rel="stylesheet" href="../dist/dygraph.css">
    <title>Dygraphs Drawing Demo</title>
    <script type="text/javascript" src="../dist/dygraph.js"></script>

    <script>
    var start_date = new Date("2002/12/29").getTime();
    var end_date = new Date().getTime();
    data = [];
    for (var d = start_date; d < end_date; d += 604800 * 1000) {
      var millis = d + 2 * 3600 * 1000;
      var date = new Date(millis);
      var yyyy = date.getFullYear(),
          mm = date.getMonth(),
          dd = date.getDate();
      data.push( [ new Date(Date.UTC(yyyy, mm, dd)), 50 ]);
    }
    </script>

    <style>
    #tool_zoom {
      background: url('drawing/tool-palette.png');
      background-position: 0px 0px;
      width: 32px;
      height: 33px;
      margin-left: 50px;
      display: inline-block;
    }
    #tool_pencil {
      background: url('drawing/tool-palette.png');
      background-position: -32px 0px;
      width: 32px;
      height: 33px;
      display: inline-block;
    }
    #tool_eraser {
      background: url('drawing/tool-palette.png');
      background-position: -64px 0px;
      width: 33px;
      height: 33px;
      display: inline-block;
    }
    #toolbar {
      display: inline-block;
    }
    </style>
</head>
<body>
  <h2>Time Series Drawing Demo</h2>
  <div id='toolbar'>
    <div id="tool_zoom" onClick='change_tool(this)'></div><div id="tool_pencil" onClick='change_tool(this)'></div><div id="tool_eraser" onClick='change_tool(this)'></div>
  </div>
  <div id="draw_div" style="width: 800px; height: 400px;"></div>

  <script type="text/javascript">
    var isDrawing = false;
    var lastDrawRow = null, lastDrawValue = null;
    var tool = 'pencil';
    var valueRange = [0, 100];

    function setPoint(event, g, context) {
      var pos = Dygraph.findPos(g.graphDiv);
      var canvasx = Dygraph.pageX(event) - pos.x;
      var canvasy = Dygraph.pageY(event) - pos.y;
      var xy = g.toDataCoords(canvasx, canvasy);
      var x = xy[0], value = xy[1];
      var rows = g.numRows();
      var closest_row = -1;
      var smallest_diff = -1;
      // TODO(danvk): binary search
      for (var row = 0; row < rows; row++) {
        var date = g.getValue(row, 0);  // millis
        var diff = Math.abs(date - x);
        if (smallest_diff < 0 || diff < smallest_diff) {
          smallest_diff = diff;
          closest_row = row;
        }
      }

      if (closest_row != -1) {
        if (lastDrawRow === null) {
          lastDrawRow = closest_row;
          lastDrawValue = value;
        }
        var coeff = (value - lastDrawValue) / (closest_row - lastDrawRow);
        if (closest_row == lastDrawRow) coeff = 0.0;
        var minRow = Math.min(lastDrawRow, closest_row);
        var maxRow = Math.max(lastDrawRow, closest_row);
        for (var row = minRow; row <= maxRow; row++) {
          if (tool == 'pencil') {
            var val = lastDrawValue + coeff * (row - lastDrawRow);
            val = Math.max(valueRange[0], Math.min(val, valueRange[1]));
            data[row][1] = val;
            if (val == null || isNaN(val)) console.log(val);
          } else if (tool == 'eraser') {
            data[row][1] = null;
          }
        }
        lastDrawRow = closest_row;
        lastDrawValue = value;
        g.updateOptions({ file: data });
        g.setSelection(closest_row);  // prevents the dot from being finnicky.
      }
    }

    function finishDraw() {
      isDrawing = false;
      lastDrawRow = null;
      lastDrawValue = null;
    }

    function change_tool(tool_div) {
      var ids = ['tool_zoom', 'tool_pencil', 'tool_eraser'];
      for (var i = 0; i < ids.length; i++) {
        var div = document.getElementById(ids[i]);
        if (div == tool_div) {
          div.style.backgroundPosition = -(i * 32) + 'px -32px';
        } else {
          div.style.backgroundPosition = -(i * 32) + 'px 0px';
        }
      }
      tool = tool_div.id.replace('tool_', '');

      var dg_div = document.getElementById("draw_div");
      if (tool == 'pencil') {
        dg_div.style.cursor = 'url(drawing/cursor-pencil.png) 2 30, auto';
      } else if (tool == 'eraser') {
        dg_div.style.cursor = 'url(drawing/cursor-eraser.png) 10 30, auto';
      } else if (tool == 'zoom') {
        dg_div.style.cursor = 'crosshair';
      }
    }
    change_tool(document.getElementById("tool_pencil"));

    g = new Dygraph(document.getElementById("draw_div"), data,
        {
          valueRange: valueRange,
          labels: [ 'Date', 'Value' ],
          labelsUTC: true,
          interactionModel: {
            mousedown: function (event, g, context) {
              if (tool == 'zoom') {
                Dygraph.defaultInteractionModel.mousedown(event, g, context);
              } else {
                event.preventDefault();  // Firefox, Chrome, etc.
                isDrawing = true;
                setPoint(event, g, context);
              }
            },
            mousemove: function (event, g, context) {
              if (tool == 'zoom') {
              } else {
                if (!isDrawing) return;
                setPoint(event, g, context);
              }
            },
            mouseup: function(event, g, context) {
              if (tool == 'zoom') {
              } else {
                finishDraw();
              }
            },
            mouseout: function(event, g, context) {
              if (tool == 'zoom') {
              }
            },
            dblclick: function(event, g, context) {
              Dygraph.defaultInteractionModel.dblclick(event, g, context);
            },
            mousewheel: function(event, g, context) {
              var normal = event.detail ? event.detail * -1 : event.wheelDelta / 40;
              var percentage = normal / 50;
              var axis = g.xAxisRange();
              var xOffset = g.toDomCoords(axis[0], null)[0];
              var x = event.offsetX - xOffset;
              var w = g.toDomCoords(axis[1], null)[0] - xOffset;
              var xPct = w == 0 ? 0 : (x / w);

              var delta = axis[1] - axis[0];
              var increment = delta * percentage;
              var foo = [increment * xPct, increment * (1 - xPct)];
              var dateWindow = [ axis[0] + foo[0], axis[1] - foo[1] ];

              g.updateOptions({
                dateWindow: dateWindow
              });
              event.preventDefault();
            }
          },
          strokeWidth: 1.5,
          gridLineColor: 'rgb(196, 196, 196)',
          axes: {
            y: {
              drawAxis: false,
              drawGrid: false
            }
          }
        });
        window.onmouseup = finishDraw;
  </script>

  <p style='font-size: 10pt'>Toolbar/cursor icons are CC-licensed from <a
  href="http://www.fatcow.com/free-icons">FatCow</a>.</p>
</body>
</html>
Commit	Line	Data
8c5fe59e DV	1	<!DOCTYPE html>
	2	<html>
	3	<head>
fd6b8dad	4	<link rel="stylesheet" href="../dist/dygraph.css">
8c5fe59e	5	<title>Dygraphs Drawing Demo</title>
fbd6834a	6	<script type="text/javascript" src="../dist/dygraph.js"></script>
7e5ddc94	7
fc7d0ef1	8	<script>
8c5fe59e DV	9	var start_date = new Date("2002/12/29").getTime();
	10	var end_date = new Date().getTime();
	11	data = [];
	12	for (var d = start_date; d < end_date; d += 604800 * 1000) {
	13	var millis = d + 2 * 3600 * 1000;
fc7d0ef1 DV	14	var date = new Date(millis);
	15	var yyyy = date.getFullYear(),
	16	mm = date.getMonth(),
	17	dd = date.getDate();
	18	data.push( [ new Date(Date.UTC(yyyy, mm, dd)), 50 ]);
8c5fe59e DV	19	}
8c5fe59e DV	20	</script>
fc7d0ef1 DV	21
fc7d0ef1 DV	22	<style>
8c5fe59e DV	23	#tool_zoom {
8c5fe59e DV	24	background: url('drawing/tool-palette.png');
86cf5a64	25	background-position: 0px 0px;
8c5fe59e DV	26	width: 32px;
	27	height: 33px;
	28	margin-left: 50px;
	29	display: inline-block;
	30	}
	31	#tool_pencil {
	32	background: url('drawing/tool-palette.png');
86cf5a64	33	background-position: -32px 0px;
8c5fe59e DV	34	width: 32px;
	35	height: 33px;
	36	display: inline-block;
	37	}
	38	#tool_eraser {
	39	background: url('drawing/tool-palette.png');
86cf5a64	40	background-position: -64px 0px;
8c5fe59e DV	41	width: 33px;
	42	height: 33px;
	43	display: inline-block;
	44	}
	45	#toolbar {
	46	display: inline-block;
	47	}
	48	</style>
	49	</head>
	50	<body>
	51	<h2>Time Series Drawing Demo</h2>
	52	<div id='toolbar'>
	53	<div id="tool_zoom" onClick='change_tool(this)'></div><div id="tool_pencil" onClick='change_tool(this)'></div><div id="tool_eraser" onClick='change_tool(this)'></div>
	54	</div>
	55	<div id="draw_div" style="width: 800px; height: 400px;"></div>
	56
	57	<script type="text/javascript">
	58	var isDrawing = false;
	59	var lastDrawRow = null, lastDrawValue = null;
	60	var tool = 'pencil';
	61	var valueRange = [0, 100];
	62
	63	function setPoint(event, g, context) {
fc7d0ef1 DV	64	var pos = Dygraph.findPos(g.graphDiv);
	65	var canvasx = Dygraph.pageX(event) - pos.x;
	66	var canvasy = Dygraph.pageY(event) - pos.y;
8c5fe59e DV	67	var xy = g.toDataCoords(canvasx, canvasy);
	68	var x = xy[0], value = xy[1];
	69	var rows = g.numRows();
	70	var closest_row = -1;
	71	var smallest_diff = -1;
	72	// TODO(danvk): binary search
	73	for (var row = 0; row < rows; row++) {
	74	var date = g.getValue(row, 0); // millis
	75	var diff = Math.abs(date - x);
	76	if (smallest_diff < 0 \|\| diff < smallest_diff) {
	77	smallest_diff = diff;
	78	closest_row = row;
	79	}
	80	}
	81
	82	if (closest_row != -1) {
	83	if (lastDrawRow === null) {
	84	lastDrawRow = closest_row;
	85	lastDrawValue = value;
	86	}
	87	var coeff = (value - lastDrawValue) / (closest_row - lastDrawRow);
	88	if (closest_row == lastDrawRow) coeff = 0.0;
	89	var minRow = Math.min(lastDrawRow, closest_row);
	90	var maxRow = Math.max(lastDrawRow, closest_row);
	91	for (var row = minRow; row <= maxRow; row++) {
	92	if (tool == 'pencil') {
	93	var val = lastDrawValue + coeff * (row - lastDrawRow);
	94	val = Math.max(valueRange[0], Math.min(val, valueRange[1]));
	95	data[row][1] = val;
	96	if (val == null \|\| isNaN(val)) console.log(val);
	97	} else if (tool == 'eraser') {
	98	data[row][1] = null;
	99	}
	100	}
	101	lastDrawRow = closest_row;
	102	lastDrawValue = value;
	103	g.updateOptions({ file: data });
	104	g.setSelection(closest_row); // prevents the dot from being finnicky.
	105	}
	106	}
	107
	108	function finishDraw() {
	109	isDrawing = false;
	110	lastDrawRow = null;
	111	lastDrawValue = null;
	112	}
	113
	114	function change_tool(tool_div) {
86cf5a64	115	var ids = ['tool_zoom', 'tool_pencil', 'tool_eraser'];
8c5fe59e	116	for (var i = 0; i < ids.length; i++) {
86cf5a64 DV	117	var div = document.getElementById(ids[i]);
	118	if (div == tool_div) {
	119	div.style.backgroundPosition = -(i * 32) + 'px -32px';
	120	} else {
	121	div.style.backgroundPosition = -(i * 32) + 'px 0px';
	122	}
8c5fe59e	123	}
8c5fe59e DV	124	tool = tool_div.id.replace('tool_', '');
	125
	126	var dg_div = document.getElementById("draw_div");
	127	if (tool == 'pencil') {
	128	dg_div.style.cursor = 'url(drawing/cursor-pencil.png) 2 30, auto';
	129	} else if (tool == 'eraser') {
	130	dg_div.style.cursor = 'url(drawing/cursor-eraser.png) 10 30, auto';
	131	} else if (tool == 'zoom') {
	132	dg_div.style.cursor = 'crosshair';
	133	}
	134	}
	135	change_tool(document.getElementById("tool_pencil"));
	136
	137	g = new Dygraph(document.getElementById("draw_div"), data,
	138	{
	139	valueRange: valueRange,
	140	labels: [ 'Date', 'Value' ],
fc7d0ef1	141	labelsUTC: true,
8c5fe59e DV	142	interactionModel: {
	143	mousedown: function (event, g, context) {
	144	if (tool == 'zoom') {
	145	Dygraph.defaultInteractionModel.mousedown(event, g, context);
	146	} else {
178b1e0a	147	event.preventDefault(); // Firefox, Chrome, etc.
8c5fe59e DV	148	isDrawing = true;
	149	setPoint(event, g, context);
	150	}
	151	},
	152	mousemove: function (event, g, context) {
	153	if (tool == 'zoom') {
8c5fe59e DV	154	} else {
	155	if (!isDrawing) return;
	156	setPoint(event, g, context);
	157	}
	158	},
	159	mouseup: function(event, g, context) {
	160	if (tool == 'zoom') {
8c5fe59e DV	161	} else {
	162	finishDraw();
	163	}
	164	},
	165	mouseout: function(event, g, context) {
	166	if (tool == 'zoom') {
8c5fe59e DV	167	}
	168	},
	169	dblclick: function(event, g, context) {
	170	Dygraph.defaultInteractionModel.dblclick(event, g, context);
	171	},
	172	mousewheel: function(event, g, context) {
	173	var normal = event.detail ? event.detail * -1 : event.wheelDelta / 40;
	174	var percentage = normal / 50;
	175	var axis = g.xAxisRange();
	176	var xOffset = g.toDomCoords(axis[0], null)[0];
	177	var x = event.offsetX - xOffset;
	178	var w = g.toDomCoords(axis[1], null)[0] - xOffset;
	179	var xPct = w == 0 ? 0 : (x / w);
	180
	181	var delta = axis[1] - axis[0];
	182	var increment = delta * percentage;
	183	var foo = [increment * xPct, increment * (1 - xPct)];
	184	var dateWindow = [ axis[0] + foo[0], axis[1] - foo[1] ];
	185
	186	g.updateOptions({
	187	dateWindow: dateWindow
	188	});
178b1e0a	189	event.preventDefault();
8c5fe59e DV	190	}
	191	},
	192	strokeWidth: 1.5,
	193	gridLineColor: 'rgb(196, 196, 196)',
fc7d0ef1 DV	194	axes: {
	195	y: {
	196	drawAxis: false,
	197	drawGrid: false
	198	}
	199	}
8c5fe59e DV	200	});
	201	window.onmouseup = finishDraw;
	202	</script>
	203
	204	<p style='font-size: 10pt'>Toolbar/cursor icons are CC-licensed from <a
	205	href="http://www.fatcow.com/free-icons">FatCow</a>.</p>
	206	</body>
	207	</html>