2014-12-30 18:51:10 +01:00
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<!doctype html>
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<html>
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<head>
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<title>Line Chart with Custom Tooltips</title>
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<script src="../Chart.js"></script>
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<script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
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<style>
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#canvas-holder1 {
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width: 300px;
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margin: 20px auto;
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}
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2015-06-22 21:10:49 +02:00
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2014-12-30 18:51:10 +01:00
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#canvas-holder2 {
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width: 50%;
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margin: 20px 25%;
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}
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2015-06-22 21:10:49 +02:00
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2014-12-30 18:51:10 +01:00
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#chartjs-tooltip {
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opacity: 1;
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position: absolute;
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background: rgba(0, 0, 0, .7);
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color: white;
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border-radius: 3px;
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-webkit-transition: all .1s ease;
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transition: all .1s ease;
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pointer-events: none;
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-webkit-transform: translate(-50%, 0);
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transform: translate(-50%, 0);
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}
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2015-06-22 21:10:49 +02:00
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.chartjs-tooltip-key {
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display: inline-block;
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width: 10px;
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height: 10px;
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}
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2014-12-30 18:51:10 +01:00
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</style>
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</head>
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<body>
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<div id="canvas-holder1">
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<canvas id="chart1" width="300" height="30" />
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</div>
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<script>
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Chart.defaults.global.pointHitDetectionRadius = 1;
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2015-06-22 21:10:49 +02:00
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var customTooltips = function(tooltip) {
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console.log(tooltip._view);
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2014-12-30 18:51:10 +01:00
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2015-06-22 21:10:49 +02:00
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// Tooltip Element
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2014-12-30 18:51:10 +01:00
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var tooltipEl = $('#chartjs-tooltip');
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2015-06-22 21:10:49 +02:00
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if (!tooltipEl[0]) {
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$('body').append('<div id="chartjs-tooltip"></div>');
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tooltipEl = $('#chartjs-tooltip');
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}
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// Hide if no tooltip
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if (!tooltip._view.opacity) {
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2014-12-30 18:51:10 +01:00
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tooltipEl.css({
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opacity: 0
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});
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2015-06-22 21:10:49 +02:00
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$('.chartjs-wrap canvas')
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.each(function(index, el) {
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$(el).css('cursor', 'default');
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});
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2014-12-30 18:51:10 +01:00
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return;
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}
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2015-06-22 21:10:49 +02:00
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$(tooltip._chart.canvas).css('cursor', 'pointer');
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2014-12-30 18:51:10 +01:00
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2015-06-22 21:10:49 +02:00
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// Set caret Position
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tooltipEl.removeClass('above below no-transform');
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if (tooltip._view.yAlign) {
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tooltipEl.addClass(tooltip._view.yAlign);
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} else {
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tooltipEl.addClass('no-transform');
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2014-12-30 18:51:10 +01:00
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}
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2015-06-22 21:10:49 +02:00
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// Set Text
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if (tooltip._view.text) {
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tooltipEl.html(tooltip._view.text);
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} else if (tooltip._view.labels) {
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var innerHtml = '<div class="title">' + tooltip._view.title + '</div>';
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for (var i = 0; i < tooltip._view.labels.length; i++) {
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innerHtml += [
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'<div class="section">',
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' <span class="key" style="background-color:' + tooltip._view.legendColors[i].fill + '"></span>',
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' <span class="value">' + tooltip._view.labels[i] + '</span>',
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'</div>'
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].join('');
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}
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tooltipEl.html(innerHtml);
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}
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// Find Y Location on page
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var top = 0;
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if (tooltip._view.yAlign) {
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if (tooltip._view.yAlign == 'above') {
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top = tooltip._view.y - tooltip._view.caretHeight - tooltip._view.caretPadding;
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} else {
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top = tooltip._view.y + tooltip._view.caretHeight + tooltip._view.caretPadding;
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}
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}
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var offset = $(tooltip._chart.canvas).offset();
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// Display, position, and set styles for font
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2014-12-30 18:51:10 +01:00
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tooltipEl.css({
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opacity: 1,
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2015-06-22 21:10:49 +02:00
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width: tooltip._view.width ? (tooltip._view.width + 'px') : 'auto',
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left: offset.left + tooltip._view.x + 'px',
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top: offset.top + top + 'px',
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fontFamily: tooltip._view._fontFamily,
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fontSize: tooltip._view.fontSize,
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fontStyle: tooltip._view._fontStyle,
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padding: tooltip._view.yPadding + 'px ' + tooltip._view.xPadding + 'px',
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2014-12-30 18:51:10 +01:00
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});
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};
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var randomScalingFactor = function() {
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return Math.round(Math.random() * 100);
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};
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var lineChartData = {
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labels: ["January", "February", "March", "April", "May", "June", "July"],
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datasets: [{
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label: "My First dataset",
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data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
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}, {
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label: "My Second dataset",
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data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
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}]
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};
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window.onload = function() {
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2015-06-22 21:10:49 +02:00
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var chartEl = document.getElementById("chart1");
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window.myLine = new Chart(chartEl, {
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type: 'line',
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data: lineChartData,
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2015-05-20 15:03:22 +02:00
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options: {
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2015-06-22 21:10:49 +02:00
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tooltips: {
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enabled: false,
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custom: customTooltips
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}
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2015-05-20 15:03:22 +02:00
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}
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2014-12-30 18:51:10 +01:00
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});
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};
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</script>
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</body>
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</html>
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