feat: 图表支持图例（#45）

src/hooks/useCreateElement.ts

@@ -94,6 +94,7 @@ export default () => {
       gridColor: fontColor.value,
       data: {
         labels: ['类别1', '类别2', '类别3', '类别4', '类别5'],
+        legends: ['系列1'],
         series: [
           [12, 19, 5, 2, 18],
         ],

src/hooks/useExport.ts

@@ -400,6 +400,12 @@ export default () => {
           }
 
           if (el.fill) options.fill = formatColor(el.fill).color
+          if (el.legend) {
+            options.showLegend = true
+            options.legendPos = el.legend === 'top' ? 't' : 'b'
+            options.legendColor = formatColor(el.gridColor || '#000000').color
+            options.legendFontSize = 14 * 0.75
+          }
 
           let type = pptx.ChartType.bar
           if (el.chartType === 'bar') {

src/types/slides.ts

@@ -325,6 +325,7 @@ export interface PPTLineElement extends Omit<PPTBaseElement, 'height'> {
 export type ChartType = 'bar' | 'line' | 'pie'
 export interface ChartData {
   labels: string[];
+  legends: string[];
   series: number[][];
 }
 
@@ -346,6 +347,8 @@ export interface ChartData {
  * themeColor: 主题色
  * 
  * gridColor?: 网格&坐标颜色
+ * 
+ * legend?: 图例/位置
  */
 export interface PPTChartElement extends PPTBaseElement {
   type: 'chart';
@@ -356,6 +359,7 @@ export interface PPTChartElement extends PPTBaseElement {
   outline?: PPTElementOutline;
   themeColor: string[];
   gridColor?: string;
+  legend?: '' | 'top' | 'bottom',
 }
 
 

src/views/Editor/Toolbar/ElementStylePanel/ChartStylePanel/ChartDataEditor.vue

@@ -23,8 +23,12 @@
       </div>
       <table>
         <tbody>
-          <tr v-for="rowIndex in 30" :key="rowIndex">
+          <tr v-for="rowIndex in 31" :key="rowIndex">
-            <td v-for="colIndex in 7" :key="colIndex" :class="{ 'head': colIndex === 1 && rowIndex <= selectedRange[1] }">
+            <td 
+              v-for="colIndex in 7" 
+              :key="colIndex" 
+              :class="{ 'head': (colIndex === 1 && rowIndex <= selectedRange[1]) || (rowIndex === 1 && colIndex <= selectedRange[0]) }"
+            >
               <input 
                 :class="['item', { 'selected': rowIndex <= selectedRange[1] && colIndex <= selectedRange[0] }]"
                 :id="`cell-${rowIndex - 1}-${colIndex - 1}`"
@@ -38,8 +42,13 @@
     </div>
 
     <div class="btns">
+      <div class="left">
+        <Button class="btn" @click="clear()">清空</Button>
+      </div>
+      <div class="right">
         <Button class="btn" @click="closeEditor()">取消</Button>
-      <Button type="primary" class="btn" @click="getTableData()">确认</Button>
+        <Button type="primary" class="btn" @click="getTableData()" style="margin-left: 10px;">确认</Button>
+      </div>
     </div>
   </div>
 </template>
@@ -89,10 +98,11 @@ export default defineComponent({
     const initData = () => {
       const _data: string[][] = []
 
-      const { labels, series } = props.data
+      const { labels, legends, series } = props.data
       const rowCount = labels.length
       const colCount = series.length
 
+      _data.push(['', ...legends])
       for (let rowIndex = 0; rowIndex < rowCount; rowIndex++) {
         const row = [labels[rowIndex]]
         for (let colIndex = 0; colIndex < colCount; colIndex++) {
@@ -101,7 +111,7 @@ export default defineComponent({
         _data.push(row)
       }
 
-      for (let rowIndex = 0; rowIndex < rowCount; rowIndex++) {
+      for (let rowIndex = 0; rowIndex < rowCount + 1; rowIndex++) {
         for (let colIndex = 0; colIndex < colCount + 1; colIndex++) {
           const inputRef = document.querySelector(`#cell-${rowIndex}-${colIndex}`) as HTMLInputElement
           if (!inputRef) continue
@@ -109,7 +119,7 @@ export default defineComponent({
         }
       }
 
-      selectedRange.value = [colCount + 1, rowCount]
+      selectedRange.value = [colCount + 1, rowCount + 1]
     }
 
     onMounted(initData)
@@ -140,19 +150,26 @@ export default defineComponent({
       const [col, row] = selectedRange.value
 
       const labels: string[] = []
+      const legends: string[] = []
       const series: number[][] = []
 
-      // 第一列为系列名，实际数据从第二列开始
+      // 第一行为系列名，第一列为项目名，实际数据从第二行第二列开始
-      for (let rowIndex = 0; rowIndex < row; rowIndex++) {
+      for (let rowIndex = 1; rowIndex < row; rowIndex++) {
-        let labelsItem = `类别${rowIndex + 1}`
+        let labelsItem = `类别${rowIndex}`
         const labelInputRef = document.querySelector(`#cell-${rowIndex}-0`) as HTMLInputElement
         if (labelInputRef && labelInputRef.value) labelsItem = labelInputRef.value
         labels.push(labelsItem)
       }
+      for (let colIndex = 1; colIndex < col; colIndex++) {
+        let legendsItem = `系列${colIndex}`
+        const labelInputRef = document.querySelector(`#cell-0-${colIndex}`) as HTMLInputElement
+        if (labelInputRef && labelInputRef.value) legendsItem = labelInputRef.value
+        legends.push(legendsItem)
+      }
 
       for (let colIndex = 1; colIndex < col; colIndex++) {
         const seriesItem = []
-        for (let rowIndex = 0; rowIndex < row; rowIndex++) {
+        for (let rowIndex = 1; rowIndex < row; rowIndex++) {
           const valueInputRef = document.querySelector(`#cell-${rowIndex}-${colIndex}`) as HTMLInputElement
           let value = 0
           if (valueInputRef && valueInputRef.value && !!(+valueInputRef.value)) {
@@ -162,8 +179,19 @@ export default defineComponent({
         }
         series.push(seriesItem)
       }
-      const data = { labels, series }
+
-      emit('save', data)
+      emit('save', { labels, legends, series })
+    }
+
+    // 清空表格数据
+    const clear = () => {
+      for (let rowIndex = 1; rowIndex < 31; rowIndex++) {
+        for (let colIndex = 1; colIndex < 7; colIndex++) {
+          const inputRef = document.querySelector(`#cell-${rowIndex}-${colIndex}`) as HTMLInputElement
+          if (!inputRef) continue
+          inputRef.value = ''
+        }
+      }
     }
 
     // 关闭图表数据编辑器
@@ -230,6 +258,7 @@ export default defineComponent({
       changeSelectRange,
       getTableData,
       closeEditor,
+      clear,
     }
   },
 })
@@ -346,10 +375,7 @@ table {
 }
 .btns {
   margin-top: 10px;
-  text-align: right;
+  display: flex;
-
+  justify-content: space-between;
-  .btn {
-    margin-left: 10px;
-  }
 }
 </style>

src/views/Editor/Toolbar/ElementStylePanel/ChartStylePanel/index.vue

@@ -41,6 +41,17 @@
 
     <Divider />
 
+    <div class="row">
+      <div style="flex: 2;">图例：</div>
+      <Select style="flex: 3;" :value="legend" @change="value => updateLegend(value)">
+        <SelectOption value="">不显示</SelectOption>
+        <SelectOption value="top">显示在上方</SelectOption>
+        <SelectOption value="bottom">显示在下方</SelectOption>
+      </Select>
+    </div>
+
+    <Divider />
+
     <div class="row">
       <div style="flex: 2;">背景填充：</div>
       <Popover trigger="click">
@@ -145,6 +156,7 @@ export default defineComponent({
 
     const themeColor = ref<string[]>([])
     const gridColor = ref('')
+    const legend = ref('')
 
     const lineSmooth = ref(true)
     const showLine = ref(true)
@@ -174,6 +186,7 @@ export default defineComponent({
 
       themeColor.value = handleElement.value.themeColor
       gridColor.value = handleElement.value.gridColor || 'rgba(0, 0, 0, 0.4)'
+      legend.value = handleElement.value.legend || ''
     }, { deep: true, immediate: true })
 
     // 设置图表数据
@@ -234,6 +247,13 @@ export default defineComponent({
       addHistorySnapshot()
     }
 
+    // 设置图例位置/不显示
+    const updateLegend = (legend: '' | 'top' | 'bottom') => {
+      const props = { legend }
+      store.commit(MutationTypes.UPDATE_ELEMENT, { id: handleElement.value.id, props })
+      addHistorySnapshot()
+    }
+
     const openDataEditor = () => chartDataEditorVisible.value = true
 
     emitter.on(EmitterEvents.OPEN_CHART_DATA_EDITOR, openDataEditor)
@@ -255,10 +275,12 @@ export default defineComponent({
       updateOptions,
       themeColor,
       gridColor,
+      legend,
       updateTheme,
       addThemeColor,
       deleteThemeColor,
       updateGridColor,
+      updateLegend,
     }
   },
 })

src/views/components/element/ChartElement/Chart.vue

@@ -1,19 +1,33 @@
 <template>
-  <div class="chart">
+  <div 
+    class="chart"
+    :style="{ flexDirection: legend === 'top' ? 'column-reverse' : 'column' }"
+  >
     <div 
       class="chart-content"
       ref="chartRef"
       :style="{
         width: width + 'px',
-        height: height + 'px',
+        height: chartHeight + 'px',
         transform: `scale(${1 / slideScale})`,
       }"
     ></div>
+    <div class="legends" :style="{ transform: `scale(${1 / slideScale})` }" v-if="legend">
+      <div 
+        class="legend" 
+        v-for="(legend, index) in legends" 
+        :key="index"
+        :style="{ color: gridColor }"
+      >
+        <div class="block" :style="{ backgroundColor: themeColors[index] }"></div>
+        {{legend}}
+      </div>
+    </div>
   </div>
 </template>
 
 <script lang="ts">
-import { defineComponent, inject, onMounted, PropType, ref, Ref, watch } from 'vue'
+import { computed, defineComponent, inject, onMounted, PropType, ref, Ref, watch } from 'vue'
 import { upperFirst } from 'lodash'
 import tinycolor from 'tinycolor2'
 import Chartist, {
@@ -54,9 +68,16 @@ export default defineComponent({
       type: Array as PropType<string[]>,
       required: true,
     },
+    legends: {
+      type: Array as PropType<string[]>,
+      required: true,
+    },
     gridColor: {
       type: String,
     },
+    legend: {
+      type: String as PropType<'' | 'top' | 'bottom'>,
+    },
   },
   setup(props) {
     const chartRef = ref<HTMLElement>()
@@ -64,12 +85,17 @@ export default defineComponent({
 
     let chart: IChartistLineChart | IChartistBarChart | IChartistPieChart | undefined
 
+    const chartHeight = computed(() => {
+      if (props.legend) return props.height - 20
+      return props.height
+    })
+
     const getDataAndOptions = () => {
       const propsOptopns = props.options || {}
       const options = {
         ...propsOptopns,
         width: props.width * slideScale.value,
-        height: props.height * slideScale.value,
+        height: chartHeight.value * slideScale.value,
       }
       const data = props.type === 'pie' ? { ...props.data, series: props.data.series[0] } : props.data
       return { data, options }
@@ -101,11 +127,7 @@ export default defineComponent({
 
     onMounted(renderChart)
 
-    // 更新主题配色：
+    const themeColors = computed(() => {
-    // 如果当前所设置的主题色数小于10，剩余部分获取最后一个主题色的相近颜色作为配色
-    const updateTheme = () => {
-      if (!chartRef.value) return
-
       let colors: string[] = []
       if (props.themeColor.length === 10) colors = props.themeColor
       else if (props.themeColor.length === 1) colors = tinycolor(props.themeColor[0]).analogous(10).map(color => color.toHexString())
@@ -114,13 +136,20 @@ export default defineComponent({
         const supplement = tinycolor(props.themeColor[len - 1]).analogous(10 + 1 - len).map(color => color.toHexString())
         colors = [...props.themeColor.slice(0, len - 1), ...supplement]
       }
+      return colors
+    })
+
+    // 更新主题配色：
+    // 如果当前所设置的主题色数小于10，剩余部分获取最后一个主题色的相近颜色作为配色
+    const updateTheme = () => {
+      if (!chartRef.value) return
 
       for (let i = 0; i < 10; i++) {
-        chartRef.value.style.setProperty(`--theme-color-${i + 1}`, colors[i])
+        chartRef.value.style.setProperty(`--theme-color-${i + 1}`, themeColors.value[i])
       }
     }
 
-    watch(() => props.themeColor, updateTheme)
+    watch(themeColors, updateTheme)
     onMounted(updateTheme)
 
     // 更新网格颜色，包括坐标的文字部分
@@ -133,6 +162,8 @@ export default defineComponent({
     onMounted(updateGridColor)
 
     return {
+      chartHeight,
+      themeColors,
       slideScale,
       chartRef,
     }
@@ -141,6 +172,10 @@ export default defineComponent({
 </script>
 
 <style lang="scss" scoped>
+.chart {
+  display: flex;
+}
+
 .chart-content {
   transform-origin: 0 0;
 }
@@ -194,4 +229,26 @@ export default defineComponent({
     color: var(--grid-color);
   }
 }
+
+.legends {
+  height: 20px;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  font-size: 14px;
+}
+.legend {
+  display: flex;
+  align-items: center;
+
+  & + .legend {
+    margin-left: 10px;
+  }
+
+  .block {
+    width: 10px;
+    height: 10px;
+    margin-right: 5px;
+  }
+}
 </style>

src/views/components/element/ChartElement/ScreenChartElement.vue

@@ -26,6 +26,8 @@
         :options="elementInfo.options"
         :themeColor="elementInfo.themeColor"
         :gridColor="elementInfo.gridColor"
+        :legends="elementInfo.data.legends"
+        :legend="elementInfo.legend || ''"
       />
     </div>
   </div>

src/views/components/element/ChartElement/index.vue

@@ -30,6 +30,8 @@
         :options="elementInfo.options"
         :themeColor="elementInfo.themeColor"
         :gridColor="elementInfo.gridColor"
+        :legends="elementInfo.data.legends"
+        :legend="elementInfo.legend || ''"
       />
     </div>
   </div>