mirror of
https://github.com/chartjs/Chart.js.git
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68 lines
1.7 KiB
JavaScript
68 lines
1.7 KiB
JavaScript
const canvas = document.createElement('canvas');
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canvas.width = 512;
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canvas.height = 512;
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const ctx = canvas.getContext('2d');
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module.exports = {
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config: {
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type: 'doughnut',
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data: {
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labels: ['A', 'B', 'C', 'D', 'E'],
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datasets: [{
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data: [1, 5, 10, 50, 100],
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backgroundColor: [
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'rgba(255, 99, 132, 0.8)',
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'rgba(54, 162, 235, 0.8)',
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'rgba(255, 206, 86, 0.8)',
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'rgba(75, 192, 192, 0.8)',
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'rgba(153, 102, 255, 0.8)'
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],
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borderColor: [
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'rgb(255, 99, 132)',
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'rgb(54, 162, 235)',
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'rgb(255, 206, 86)',
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'rgb(75, 192, 192)',
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'rgb(153, 102, 255)'
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]
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}]
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},
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options: {
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rotation: -360,
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circumference: 180,
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events: []
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}
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},
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options: {
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canvas: {
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height: 512,
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width: 512
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},
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run: function(chart) {
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return new Promise((resolve) => {
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for (let i = 0; i < 64; i++) {
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const col = i % 8;
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const row = Math.floor(i / 8);
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const evenodd = row % 2 ? 1 : -1;
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chart.options.rotation = col * 45 * evenodd;
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chart.options.circumference = 360 - row * 45;
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chart.update();
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ctx.drawImage(chart.canvas, col * 64, row * 64, 64, 64);
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}
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ctx.strokeStyle = 'red';
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ctx.lineWidth = 0.5;
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ctx.beginPath();
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for (let i = 1; i < 8; i++) {
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ctx.moveTo(i * 64, 0);
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ctx.lineTo(i * 64, 511);
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ctx.moveTo(0, i * 64);
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ctx.lineTo(511, i * 64);
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}
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ctx.stroke();
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Chart.helpers.clearCanvas(chart.canvas);
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chart.ctx.drawImage(canvas, 0, 0);
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resolve();
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});
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}
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}
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};
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