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(window.webpackJsonp=window.webpackJsonp||[]).push([[234],{564:function(t,n,a){"use strict";a.r(n);var e=a(6),s=Object(e.a)({},(function(){var t=this,n=t.$createElement,a=t._self._c||n;return a("ContentSlotsDistributor",{attrs:{"slot-key":t.$parent.slotKey}},[a("h1",{attrs:{id:"doughnut-empty-state"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#doughnut-empty-state"}},[t._v("#")]),t._v(" Doughnut Empty State")]),t._v(" "),a("chart-editor",{attrs:{code:"// <block:data:2>\nconst data = {\n  labels: [],\n  datasets: [\n    {\n      label: 'Dataset 1',\n      data: []\n    }\n  ]\n};\n// </block:data>\n\n// <block:plugin:1>\nconst plugin = {\n  id: 'emptyDoughnut',\n  afterDraw(chart, args, options) {\n    const {datasets} = chart.data;\n    const {color, width, radiusDecrease} = options;\n    let hasData = false;\n\n    for (let i = 0; i < datasets.length; i += 1) {\n      const dataset = datasets[i];\n      hasData |= dataset.data.length > 0;\n    }\n\n    if (!hasData) {\n      const {chartArea: {left, top, right, bottom}, ctx} = chart;\n      const centerX = (left + right) / 2;\n      const centerY = (top + bottom) / 2;\n      const r = Math.min(right - left, bottom - top) / 2;\n\n      ctx.beginPath();\n      ctx.lineWidth = width || 2;\n      ctx.strokeStyle = color || 'rgba(255, 128, 0, 0.5)';\n      ctx.arc(centerX, centerY, (r - radiusDecrease || 0), 0, 2 * Math.PI);\n      ctx.stroke();\n    }\n  }\n};\n// </block:plugin>\n\n// <block:config:0>\nconst config = {\n  type: 'doughnut',\n  data: data,\n  options: {\n    plugins: {\n      emptyDoughnut: {\n        color: 'rgba(255, 128, 0, 0.5)',\n        width: 2,\n        radiusDecrease: 20\n      }\n    }\n  },\n  plugins: [plugin]\n};\n// </block:config>\n\nconst actions = [\n  {\n    name: 'Randomize',\n    handler(chart) {\n      chart.data.datasets.forEach(dataset => {\n        dataset.data = Utils.points(NUMBER_CFG);\n      });\n      chart.update();\n    }\n  },\n];\n\nmodule.exports = {\n  actions,\n  config,\n};\n"}}),a("h2",{attrs:{id:"docs"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#docs"}},[t._v("#")]),t._v(" Docs")]),t._v(" "),a("ul",[a("li",[a("RouterLink",{attrs:{to:"/general/data-structures.html"}},[t._v("Data structures ("),a("code",[t._v("labels")]),t._v(")")])],1),t._v(" "),a("li",[a("RouterLink",{attrs:{to:"/developers/plugins.html"}},[t._v("Plugins")])],1),t._v(" "),a("li",[a("RouterLink",{attrs:{to:"/charts/doughnut.html"}},[t._v("Doughnut and Pie Charts")])],1)])],1)}),[],!1,null,null,null);n.default=s.exports}}]);
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