--- /dev/null
+<!doctype html>
+<html>
+<head>
+<title>Linear Gradient</title>
+ <script src="../../dist/Chart.js"></script>
+ <script src="../utils.js"></script>
+ <style>
+ canvas {
+ -moz-user-select: none;
+ -webkit-user-select: none;
+ -ms-user-select: none;
+ }
+ </style>
+</head>
+
+<body>
+ <div style="width: 75%;">
+ <canvas id="canvas"></canvas>
+ </div>
+ <br>
+ <br>
+ <button id="randomizeData">Randomize Data</button>
+ <script>
+ var chartColors = window.chartColors;
+ var gradient = null;
+ var width = null;
+ var height = null;
+ var config = {
+ type: 'line',
+ data: {
+ labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
+ datasets: [{
+ label: 'My First dataset',
+ borderColor: function(context) {
+ var chartArea = context.chart.chartArea;
+
+ if (!chartArea) {
+ // This case happens on initial chart load
+ return null;
+ }
+
+ var chartWidth = chartArea.right - chartArea.left;
+ var chartHeight = chartArea.bottom - chartArea.top;
+ if (gradient === null || width !== chartWidth || height !== chartHeight) {
+ // Create the gradient because this is either the first render
+ // or the size of the chart has changed
+ width = chartWidth;
+ height = chartHeight;
+ var ctx = context.chart.ctx;
+ gradient = ctx.createLinearGradient(0, chartArea.bottom, 0, chartArea.top);
+ gradient.addColorStop(0, chartColors.blue);
+ gradient.addColorStop(0.5, chartColors.yellow);
+ gradient.addColorStop(1, chartColors.red);
+ }
+
+ return gradient;
+ },
+ data: [
+ randomScalingFactor(),
+ randomScalingFactor(),
+ randomScalingFactor(),
+ randomScalingFactor(),
+ randomScalingFactor(),
+ randomScalingFactor(),
+ randomScalingFactor()
+ ],
+ fill: false,
+ }]
+ },
+ options: {
+ responsive: true,
+ title: {
+ display: true,
+ text: 'Chart.js Line Chart'
+ },
+ tooltips: {
+ mode: 'index',
+ intersect: false,
+ },
+ hover: {
+ mode: 'nearest',
+ intersect: true
+ },
+ scales: {
+ xAxes: [{
+ display: true,
+ scaleLabel: {
+ display: true,
+ labelString: 'Month'
+ }
+ }],
+ yAxes: [{
+ display: true,
+ scaleLabel: {
+ display: true,
+ labelString: 'Value'
+ }
+ }]
+ }
+ }
+ };
+
+ window.onload = function() {
+ var ctx = document.getElementById('canvas');
+ window.myPolarArea = new Chart(ctx, config);
+ };
+
+ document.getElementById('randomizeData').addEventListener('click', function() {
+ config.data.datasets.forEach(function(piece, i) {
+ piece.data.forEach(function(value, j) {
+ config.data.datasets[i].data[j] = randomScalingFactor();
+ });
+ });
+ window.myPolarArea.update();
+ });
+ </script>
+</body>
+
+</html>
--- /dev/null
+<!doctype html>
+<html>
+<head>
+<title>Radial Gradient</title>
+ <script src="../../dist/Chart.js"></script>
+ <script src="../utils.js"></script>
+ <style>
+ canvas {
+ -moz-user-select: none;
+ -webkit-user-select: none;
+ -ms-user-select: none;
+ }
+ </style>
+</head>
+
+<body>
+ <div style="width: 75%;">
+ <canvas id="canvas"></canvas>
+ </div>
+ <br>
+ <br>
+ <button id="randomizeData">Randomize Data</button>
+ <script>
+ var chartColors = window.chartColors;
+ var gradient = null;
+ var width = null;
+ var height = null;
+ var config = {
+ type: 'polarArea',
+ data: {
+ datasets: [{
+ data: [
+ randomScalingFactor(),
+ randomScalingFactor(),
+ randomScalingFactor(),
+ randomScalingFactor(),
+ randomScalingFactor(),
+ ],
+ backgroundColor: function(context) {
+ var chartArea = context.chart.chartArea;
+
+ if (!chartArea) {
+ // This case happens on initial chart load
+ return null;
+ }
+
+ var chartWidth = chartArea.right - chartArea.left;
+ var chartHeight = chartArea.bottom - chartArea.top;
+ if (gradient === null || width !== chartWidth || height !== chartHeight) {
+ // Create the gradient because this is either the first render
+ // or the size of the chart has changed
+ width = chartWidth;
+ height = chartHeight;
+ var centerX = (chartArea.left + chartArea.right) / 2;
+ var centerY = (chartArea.top + chartArea.bottom) / 2;
+ var r = Math.min(
+ (chartArea.right - chartArea.left) / 2,
+ (chartArea.bottom - chartArea.top) / 2
+ );
+ var ctx = context.chart.ctx;
+ gradient = ctx.createRadialGradient(centerX, centerY, 0, centerX, centerY, r);
+ gradient.addColorStop(0, chartColors.red);
+ gradient.addColorStop(0.5, chartColors.green);
+ gradient.addColorStop(1, chartColors.purple);
+ }
+
+ return gradient;
+ },
+ label: 'My dataset' // for legend
+ }],
+ labels: [
+ 'Red',
+ 'Orange',
+ 'Yellow',
+ 'Green',
+ 'Blue'
+ ]
+ },
+ options: {
+ responsive: true,
+ legend: {
+ position: 'right',
+ },
+ title: {
+ display: true,
+ text: 'Chart.js Polar Area Chart'
+ },
+ scale: {
+ ticks: {
+ beginAtZero: true
+ },
+ reverse: false
+ },
+ animation: {
+ animateRotate: false,
+ animateScale: true
+ }
+ }
+ };
+
+ window.onload = function() {
+ var ctx = document.getElementById('canvas');
+ window.myPolarArea = new Chart(ctx, config);
+ };
+
+ document.getElementById('randomizeData').addEventListener('click', function() {
+ config.data.datasets.forEach(function(piece, i) {
+ piece.data.forEach(function(value, j) {
+ config.data.datasets[i].data[j] = randomScalingFactor();
+ });
+ });
+ window.myPolarArea.update();
+ });
+ </script>
+</body>
+
+</html>
}, {
title: 'Content Security Policy',
path: 'advanced/content-security-policy.html'
+ }, {
+ title: 'Polar Area Radial Gradient',
+ path: 'advanced/radial-gradient.html'
+ }, {
+ title: 'Line Gradient',
+ path: 'advanced/line-gradient.html'
}]
}];
projects / thirdparty / Chart.js.git / commitdiff
