[dygraphs.git] / tests / drawing.html

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