Demo:导出图片支持选择是否显示完整背景图片

web/src/lang/en_us.js

@@ -171,7 +171,8 @@ export default {
     addFooterTextPlaceholder: 'For example: From simple-mind-map',
     addFooterText: 'Add text at the footer',
     desc: 'Desc',
-    options: 'Options'
+    options: 'Options',
+    isFitBg: 'Whether to display the complete background image (effective when a background image is used)'
   },
   fullscreen: {
     fullscreenShow: 'Full screen show',

web/src/lang/zh_cn.js

@@ -166,7 +166,8 @@ export default {
     addFooterText: '底部添加文字',
     addFooterTextPlaceholder: '比如：来自simple-mind-map',
     desc: '说明',
-    options: '选项'
+    options: '选项',
+    isFitBg: '是否显示完整背景图片（使用了背景图片时生效）'
   },
   fullscreen: {
     fullscreenShow: '全屏查看',

web/src/lang/zh_tw.js

@@ -167,7 +167,8 @@ export default {
     addFooterText: '在底部新增文字',
     addFooterTextPlaceholder: '例如：來自 simple-mind-map',
     desc: '說明',
-    options: '選項'
+    options: '選項',
+    isFitBg: '是否顯示完整背景圖片（使用了背景圖片時生效）'
   },
   fullscreen: {
     fullscreenShow: '全螢幕檢視',

web/src/pages/Edit/components/Export.vue

@@ -100,6 +100,11 @@
                     >{{ $t('export.isTransparent') }}</el-checkbox
                   >
                 </div>
+                <div class="valueSubItem">
+                  <el-checkbox v-show="showFitBgOption" v-model="isFitBg">{{
+                    $t('export.isFitBg')
+                  }}</el-checkbox>
+                </div>
               </div>
             </div>
           </div>
@@ -136,7 +141,8 @@ export default {
       paddingX: 10,
       paddingY: 10,
       extraText: '',
-      isMobile: isMobile()
+      isMobile: isMobile(),
+      isFitBg: true
     }
   },
   computed: {
@@ -166,6 +172,10 @@ export default {
         return item.type === this.exportType
       })
       return cur
+    },
+
+    showFitBgOption() {
+      return ['png', 'pdf'].includes(this.exportType) && !this.isTransparent
     }
   },
   created() {
@@ -220,7 +230,9 @@ export default {
           this.exportType,
           true,
           this.fileName,
-          this.isTransparent
+          this.isTransparent,
+          null,
+          this.isFitBg
         )
       } else if (this.exportType === 'pdf') {
         this.$bus.$emit(
@@ -228,7 +240,8 @@ export default {
           this.exportType,
           true,
           this.fileName,
-          this.isTransparent
+          this.isTransparent,
+          this.isFitBg
         )
       } else if (this.exportType === 'mm') {
         this.$bus.$emit('export', this.exportType, true, this.fileName, {