From c538cb0fc1bb077fce0a3f72d8167b8a1962dc07 Mon Sep 17 00:00:00 2001
From: pipipi-pikachu <1171051090@qq.com>
Date: Thu, 14 Jan 2021 23:50:27 +0800
Subject: [PATCH] =?UTF-8?q?=E7=AE=80=E5=8D=95=E5=B0=81=E8=A3=85chart.js?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/components/Chart.vue | 131 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 src/components/Chart.vue

diff --git a/src/components/Chart.vue b/src/components/Chart.vue
new file mode 100644
index 00000000..ba1f9fda
--- /dev/null
+++ b/src/components/Chart.vue
@@ -0,0 +1,131 @@
+<template>
+  <div 
+    class="chart"
+    :style="{
+      width: width + 'px',
+      height: height + 'px',
+    }"
+  >
+    <canvas ref="canvasRef"></canvas>
+  </div>
+</template>
+
+<script lang="ts">
+import { computed, defineComponent, onMounted, onUnmounted, PropType, ref } from 'vue'
+import Chart from 'chart.js'
+
+interface ChartData {
+  labels: string[];
+  values: number[][];
+}
+
+// const data = {
+//   labels: ['Red', 'Blue', 'Yellow', 'Green', 'Purple', 'Orange'],
+//   values: [
+//     [12, 19, 3, 5, 2, 3],
+//     [22, 9, 13, 25, 12, 5],
+//   ]
+// }
+
+// bar
+// horizontalBar
+// line
+// radar
+// pie
+// doughnut
+// polarArea
+
+export default defineComponent({
+  name: 'chart',
+  props: {
+    type: {
+      type: String,
+      required: true,
+    },
+    width: {
+      type: Number,
+      required: true,
+    },
+    height: {
+      type: Number,
+      required: true,
+    },
+    data: {
+      type: Object as PropType<ChartData>,
+      required: true,
+    },
+  },
+  setup(props) {
+    const canvasRef = ref<HTMLCanvasElement | null>(null)
+    let chart: Chart
+
+    const data = computed(() => ({
+      labels: props.data.labels,
+      datasets: props.data.values.map(item => {
+        return {
+          data: item,
+          backgroundColor: [
+            'rgba(255, 99, 132, 0.2)',
+            'rgba(54, 162, 235, 0.2)',
+            'rgba(255, 206, 86, 0.2)',
+            'rgba(75, 192, 192, 0.2)',
+            'rgba(153, 102, 255, 0.2)',
+            'rgba(255, 159, 64, 0.2)',
+          ],
+          borderColor: [
+            'rgba(255, 99, 132, 0.5)',
+            'rgba(54, 162, 235, 0.5)',
+            'rgba(255, 206, 86, 0.5)',
+            'rgba(75, 192, 192, 0.5)',
+            'rgba(153, 102, 255, 0.5)',
+            'rgba(255, 159, 64, 0.5)',
+          ],
+          borderWidth: 1,
+        }
+      }),
+    }))
+
+    onMounted(() => {
+      if(!canvasRef.value) return
+      const ctx = canvasRef.value.getContext('2d') as CanvasRenderingContext2D
+      chart = new Chart(ctx, {
+        type: props.type,
+        data: data.value,
+        options: {
+          maintainAspectRatio: false,
+          animation: {
+            duration: 0,
+          },
+          hover: {
+            animationDuration: 0,
+          },
+          responsiveAnimationDuration: 0,
+          layout: {
+            padding: {
+              left: 8,
+              right: 8,
+              top: 8,
+              bottom: 8
+            },
+          },
+          legend: {
+            display: false,
+          },
+          elements: {
+            line: {
+              tension: 0,
+              fill: false,
+            },
+          },
+        },
+      })
+    })
+
+    onUnmounted(() => chart.destroy())
+
+    return {
+      canvasRef,
+    }
+  },
+})
+</script>
\ No newline at end of file