From 24b00fbb2025f1ad77f362def4f816ac63b4704a Mon Sep 17 00:00:00 2001
From: pipipi-pikachu <pipipi_pikachu@163.com>
Date: Sat, 9 Apr 2022 16:53:03 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=B7=BB=E5=8A=A0=E5=9B=BE=E7=89=87?=
 =?UTF-8?q?=E5=AF=BC=E5=87=BA?=
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

---
 src/hooks/useExport.ts                        |  33 ++++
 .../Editor/EditorHeader/ExportImgDialog.vue   | 169 ++++++++++++++++++
 src/views/Editor/EditorHeader/index.vue       |  16 ++
 3 files changed, 218 insertions(+)
 create mode 100644 src/views/Editor/EditorHeader/ExportImgDialog.vue

diff --git a/src/hooks/useExport.ts b/src/hooks/useExport.ts
index 1190b2f8..7aa55119 100644
--- a/src/hooks/useExport.ts
+++ b/src/hooks/useExport.ts
@@ -4,6 +4,7 @@ import { trim } from 'lodash'
 import { saveAs } from 'file-saver'
 import pptxgen from 'pptxgenjs'
 import tinycolor from 'tinycolor2'
+import { toPng, toJpeg } from 'html-to-image'
 import { useSlidesStore } from '@/store'
 import { getElementRange, getLineElementPath, getTableSubThemeColor } from '@/utils/element'
 import { AST, toAST } from '@/utils/htmlParser'
@@ -11,10 +12,41 @@ import { SvgPoints, toPoints } from '@/utils/svgPathParser'
 import { svg2Base64 } from '@/utils/svg2Base64'
 import { message } from 'ant-design-vue'
 
+interface ExportImageConfig {
+  quality: number;
+  width: number;
+  fontEmbedCSS?: string;
+}
+
 export default () => {
   const { slides } = storeToRefs(useSlidesStore())
 
   const exporting = ref(false)
+
+  // 导出图片
+  const exportImage = (domRef: HTMLElement, format: string, quality: number, ignoreWebfont = true) => {
+    exporting.value = true
+    const toImage = format === 'png' ? toPng : toJpeg
+
+    setTimeout(() => {
+      if (!domRef) return
+
+      const config: ExportImageConfig = {
+        quality,
+        width: 1600,
+      }
+
+      if (ignoreWebfont) config.fontEmbedCSS = ''
+
+      toImage(domRef, config).then(dataUrl => {
+        exporting.value = false
+        saveAs(dataUrl, `pptist_slides.${format}`)
+      }).catch(() => {
+        exporting.value = false
+        message.error('导出图片失败')
+      })
+    }, 200)
+  }
   
   // 导出JSON文件
   const exportJSON = () => {
@@ -576,6 +608,7 @@ export default () => {
 
   return {
     exporting,
+    exportImage,
     exportJSON,
     exportPPTX,
   }
diff --git a/src/views/Editor/EditorHeader/ExportImgDialog.vue b/src/views/Editor/EditorHeader/ExportImgDialog.vue
new file mode 100644
index 00000000..e885f699
--- /dev/null
+++ b/src/views/Editor/EditorHeader/ExportImgDialog.vue
@@ -0,0 +1,169 @@
+<template>
+  <div class="export-img-dialog">
+    <div class="thumbnails-view">
+      <div class="thumbnails" ref="imageThumbnailsRef">
+        <ThumbnailSlide 
+          class="thumbnail" 
+          v-for="slide in slides" 
+          :key="slide.id" 
+          :slide="slide" 
+          :size="1600" 
+        />
+      </div>
+    </div>
+    <div class="configs">
+      <div class="row">
+        <div class="title">导出格式：</div>
+        <RadioGroup
+          class="config-item"
+          v-model:value="format"
+        >
+          <RadioButton value="jpeg">JPEG</RadioButton>
+          <RadioButton value="png">PNG</RadioButton>
+        </RadioGroup>
+      </div>
+
+      <div class="row">
+        <div class="title">图片质量：</div>
+        <Slider
+          class="config-item"
+          :min="0"
+          :max="1"
+          :step="0.1"
+          v-model:value="quality"
+        />
+      </div>
+
+      <div class="row">
+        <div class="title">忽略在线字体：</div>
+        <div class="config-item">
+          <Switch v-model:checked="ignoreWebfont" />
+        </div>
+      </div>
+
+      <div class="tip">
+        提示：导出时默认会忽略在线字体，若您在幻灯片中使用了在线字体，且不希望导出图片中丢失相关样式，可以选择关闭【忽略在线字体】选项，但要注意，这将会导致导出用时大幅度增加。
+      </div>
+
+      <div class="btns">
+        <Button class="btn export" type="primary" @click="expImage()">导出图片</Button>
+        <Button class="btn close" @click="close()">关闭</Button>
+      </div>
+    </div>
+
+    <FullscreenSpin :loading="exporting" tip="正在导出..." />
+  </div>
+</template>
+
+<script lang="ts">
+import { defineComponent, ref } from 'vue'
+import { storeToRefs } from 'pinia'
+import { useSlidesStore } from '@/store'
+import useExport from '@/hooks/useExport'
+
+import ThumbnailSlide from '@/views/components/ThumbnailSlide/index.vue'
+
+export default defineComponent({
+  name: 'export-img-dialog',
+  components: {
+    ThumbnailSlide,
+  },
+  setup(props, { emit }) {
+    const { slides } = storeToRefs(useSlidesStore())
+
+    const imageThumbnailsRef = ref<HTMLElement>()
+    const format = ref<'jpeg' | 'png'>('jpeg')
+    const quality = ref(1)
+    const ignoreWebfont = ref(true)
+
+    const close = () => emit('close')
+
+    const { exportImage, exporting } = useExport()
+
+    const expImage = () => {
+      if (!imageThumbnailsRef.value) return
+      exportImage(imageThumbnailsRef.value, format.value, quality.value, ignoreWebfont.value)
+    }
+    
+    return {
+      imageThumbnailsRef,
+      slides,
+      format,
+      quality,
+      ignoreWebfont,
+      exporting,
+      expImage,
+      close,
+    }
+  },
+})
+</script>
+
+<style lang="scss" scoped>
+.export-img-dialog {
+  height: 500px;
+  display: flex;
+  justify-content: center;
+  position: relative;
+  overflow: hidden;
+}
+.thumbnails-view {
+  position: absolute;
+  top: 0;
+  bottom: 0;
+  left: 0;
+  right: 0;
+
+  &::after {
+    content: '';
+    position: absolute;
+    top: 0;
+    bottom: 0;
+    left: 0;
+    right: 0;
+    background-color: #fff;
+  }
+}
+.configs {
+  width: 300px;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  z-index: 1;
+
+  .row {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    margin-bottom: 25px;
+  }
+
+  .title {
+    width: 100px;
+  }
+  .config-item {
+    flex: 1;
+  }
+
+  .tip {
+    font-size: 12px;
+    color: #aaa;
+    line-height: 1.8;
+  }
+
+  .btns {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    margin-top: 40px;
+
+    .export {
+      flex: 1;
+    }
+    .close {
+      width: 100px;
+      margin-left: 10px;
+    }
+  }
+}
+</style>
\ No newline at end of file
diff --git a/src/views/Editor/EditorHeader/index.vue b/src/views/Editor/EditorHeader/index.vue
index e9491db4..607c8f00 100644
--- a/src/views/Editor/EditorHeader/index.vue
+++ b/src/views/Editor/EditorHeader/index.vue
@@ -7,6 +7,7 @@
           <Menu>
             <MenuItem @click="exportJSON()">导出 JSON</MenuItem>
             <MenuItem @click="exportPPTX()">导出 PPTX</MenuItem>
+            <MenuItem @click="exportImgDialogVisible = true">导出图片</MenuItem>
           </Menu>
         </template>
       </Dropdown>
@@ -63,6 +64,17 @@
       <HotkeyDoc />
     </Drawer>
 
+    <Modal
+      v-model:visible="exportImgDialogVisible" 
+      :footer="null" 
+      centered
+      :closable="false"
+      :width="680"
+      destroyOnClose
+    >
+      <ExportImgDialog @close="exportImgDialogVisible = false"/>
+    </Modal>
+
     <FullscreenSpin :loading="exporting" tip="正在导出..." />
   </div>
 </template>
@@ -77,11 +89,13 @@ import useHistorySnapshot from '@/hooks/useHistorySnapshot'
 import useExport from '@/hooks/useExport'
 
 import HotkeyDoc from './HotkeyDoc.vue'
+import ExportImgDialog from './ExportImgDialog.vue'
 
 export default defineComponent({
   name: 'editor-header',
   components: {
     HotkeyDoc,
+    ExportImgDialog,
   },
   setup() {
     const mainStore = useMainStore()
@@ -97,6 +111,7 @@ export default defineComponent({
     }
 
     const hotkeyDrawerVisible = ref(false)
+    const exportImgDialogVisible = ref(false)
 
     const goIssues = () => {
       window.open('https://github.com/pipipi-pikachu/PPTist/issues')
@@ -107,6 +122,7 @@ export default defineComponent({
       undo,
       showGridLines,
       hotkeyDrawerVisible,
+      exportImgDialogVisible,
       exporting,
       enterScreening,
       enterScreeningFromStart,