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175 lines
4.6 KiB
175 lines
4.6 KiB
9 years ago
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<!doctype html>
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<html>
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<head>
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<title>Pie Chart with Custom Tooltips</title>
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<script src="../dist/Chart.bundle.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-holder {
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width: 100%;
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margin-top: 50px;
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text-align: center;
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}
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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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padding: 3px;
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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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#chartjs-tooltip.below {
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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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#chartjs-tooltip.below:before {
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border: solid;
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border-color: #111 transparent;
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border-color: rgba(0, 0, 0, .8) transparent;
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border-width: 0 8px 8px 8px;
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bottom: 1em;
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content: "";
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display: block;
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left: 50%;
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position: absolute;
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z-index: 99;
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-webkit-transform: translate(-50%, -100%);
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transform: translate(-50%, -100%);
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}
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#chartjs-tooltip.above {
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-webkit-transform: translate(-50%, -100%);
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transform: translate(-50%, -100%);
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}
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#chartjs-tooltip.above:before {
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border: solid;
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border-color: #111 transparent;
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border-color: rgba(0, 0, 0, .8) transparent;
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border-width: 8px 8px 0 8px;
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bottom: 1em;
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content: "";
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display: block;
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left: 50%;
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top: 100%;
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position: absolute;
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z-index: 99;
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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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</style>
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</head>
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<body>
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<div id="canvas-holder">
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<canvas id="chart-area1" width="50" height="50" />
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</div>
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<div id="canvas-holder">
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<canvas id="chart-area2" width="300" height="300" />
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</div>
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<div id="chartjs-tooltip"></div>
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<script>
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Chart.defaults.global.customTooltips = function(tooltip) {
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// Tooltip Element
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var tooltipEl = $('#chartjs-tooltip');
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// Hide if no tooltip
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if (!tooltip) {
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tooltipEl.css({
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opacity: 0
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});
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return;
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}
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// Set caret Position
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tooltipEl.removeClass('above below');
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tooltipEl.addClass(tooltip.yAlign);
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// Set Text
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tooltipEl.html(tooltip.text);
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// Find Y Location on page
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var top;
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if (tooltip.yAlign == 'above') {
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top = tooltip.y - tooltip.caretHeight - tooltip.caretPadding;
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} else {
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top = tooltip.y + tooltip.caretHeight + tooltip.caretPadding;
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}
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//Function to find absolution position of the element and not just it's relative position
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function getPosition (element) {
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var top = 0, left = 0;
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do {
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top += element.offsetTop || 0;
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left += element.offsetLeft || 0;
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element = element.offsetParent;
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} while (element);
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return {
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top: top,
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left: left
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};
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};
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//Finding absolute position of the chart canvas
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var position = getPosition(tooltip.chart.canvas)
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// Display, position, and set styles for font
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tooltipEl.css({
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opacity: 1,
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left: position.left + tooltip.x + 'px',
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top: position.top + top + 'px',
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fontFamily: tooltip.fontFamily,
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fontSize: tooltip.fontSize,
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fontStyle: tooltip.fontStyle,
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});
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};
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var pieData = [{
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value: 300,
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color: "#F7464A",
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highlight: "#FF5A5E",
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label: "Red"
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}, {
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value: 50,
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color: "#46BFBD",
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highlight: "#5AD3D1",
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label: "Green"
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}, {
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value: 100,
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color: "#FDB45C",
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highlight: "#FFC870",
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label: "Yellow"
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}, {
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value: 40,
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color: "#949FB1",
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highlight: "#A8B3C5",
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label: "Grey"
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}, {
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value: 120,
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color: "#4D5360",
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highlight: "#616774",
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label: "Dark Grey"
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}];
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window.onload = function() {
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var ctx1 = document.getElementById("chart-area1").getContext("2d");
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window.myPie = new Chart(ctx1).Pie(pieData);
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var ctx2 = document.getElementById("chart-area2").getContext("2d");
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window.myPie = new Chart(ctx2).Pie(pieData);
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};
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</script>
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</body>
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</html>
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