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打印预览优化

lilei 3 anni fa
parent
commit
4e2ce0b3b5
2 ha cambiato i file con 70 aggiunte e 16 eliminazioni
  1. 1 1
      public/version.json
  2. 69 15
      src/views/common/pdfViewModal.vue

+ 1 - 1
public/version.json

@@ -1,5 +1,5 @@
 {
   "message": "发现有新版本发布,确定更新系统?",
   "vendorJsVersion": "",
-  "version": 1654567453192
+  "version": 1654580957814
 }

+ 69 - 15
src/views/common/pdfViewModal.vue

@@ -17,8 +17,14 @@
           <div>
             调整比例:{{ Math.round(scalVal*100) }}%
             <div>
-              <a-button size="small" @click="setScalVal(0)"><a-icon type="minus" /> 缩小</a-button>
-              <a-button size="small" @click="setScalVal(1)"><a-icon type="plus" /> 放大</a-button>
+              <a-button :disabled="scalLoading" style="margin-right: 10px;" size="small" @click="setScalVal(0)"><a-icon type="minus" /> 缩小</a-button>
+              <a-button :disabled="scalLoading" size="small" @click="setScalVal(1)"><a-icon type="plus" /> 放大</a-button>
+            </div>
+          </div>
+          <div>
+            截图:
+            <div>
+              <a-button :disabled="scalLoading" size="small" @click="handleDownload()"><a-icon type="copy" /> 复制截图</a-button>
             </div>
           </div>
           <div>
@@ -32,20 +38,18 @@
             </div>
           </div>
         </div>
-        <vue-scroll :ops="ops" :style="{width: Math.round(scalVal*100)+'%',height: '70vh',margin:'0 auto'}">
+        <vue-scroll :ops="ops" :style="{width: '100%',height: '70vh',margin:'0 auto'}">
           <div v-if="loadedRatio > 0 && loadedRatio < 1" style="background-color: green; color: white; text-align: center" :style="{ width: loadedRatio * 100 + '%' }">{{ Math.floor(loadedRatio * 100) }}%</div>
           <pdf
             ref="pdf"
             v-for="(item,index) in pdfList"
             :key="'pdf-'+index"
-            :style="{width: '100%'}"
+            :style="{width: Math.round(scalVal*100)+'%',margin:'0 auto'}"
             :src="getUrl('data:application/pdf;base64,' + item)"
             :page="page"
             :rotate="rotate"
-            @progress="loadedRatio = $event"
             @error="error"
-            @num-pages="numPages = $event"
-            @link-clicked="page = $event"></pdf>
+          ></pdf>
         </vue-scroll>
       </div>
       <div class="btn-box">
@@ -95,6 +99,8 @@ export default {
   },
   data () {
     return {
+      scalLoading: false,
+      pdfAllLoad: 0,
       scalVal: 0.75,
       isShow: this.openModal, //  是否打开弹框
       show: true,
@@ -134,12 +140,18 @@ export default {
     },
     // 缩放
     setScalVal (t) {
-      this.scalVal = this.scalVal + (t ? 0.05 : -0.05)
-      if (this.scalVal > 1) {
-        this.scalVal = 1
-      }
-      if (this.scalVal < 0.5) {
-        this.scalVal = 0.5
+      if (!this.scalLoading) {
+        this.scalLoading = true
+        this.scalVal = this.scalVal + (t ? 0.05 : -0.05)
+        if (this.scalVal > 1) {
+          this.scalVal = 1
+        }
+        if (this.scalVal < 0.5) {
+          this.scalVal = 0.5
+        }
+        setTimeout(() => {
+          this.scalLoading = false
+        }, 1000)
       }
     },
     getUrl (item) {
@@ -149,7 +161,6 @@ export default {
     setData (data) {
       // console.log(data)
       this.pdfList = data
-      this.src = data[0]
       this.curpage = 1
       this.total = data.length
       // 获取打印机列表
@@ -185,7 +196,49 @@ export default {
     },
     // 下载
     handleDownload () {
-      console.log(this.$refs.pdf[0].pdf)
+      if (this.scalLoading) { return }
+      const pdf = this.$refs.pdf
+      const len = pdf.length
+      const imgsList = []
+      const canvas = document.createElement('canvas')
+      let maxHeight = 0
+      const maxWidth = pdf[0].$refs.canvas.width
+      for (let i = 0; i < len; i++) {
+        const imgs = pdf[i].$refs.canvas
+        maxHeight = maxHeight + imgs.height
+        imgsList.push(imgs)
+      }
+      // 设置画布宽度和高度
+      canvas.width = maxWidth
+      canvas.height = maxHeight
+      const ctx = canvas.getContext('2d')
+      // 开始合并
+      let y = 0
+      imgsList.map(item => {
+        ctx.drawImage(item, 0, y, item.width, item.height)
+        y = y + item.height
+      })
+      // 复制图片
+      const base64Str = canvas.toDataURL('image/png')
+      this.copyImgBtn(base64Str.split(',')[1])
+      // 清除画布
+      ctx.clearRect(0, 0, maxWidth, maxHeight)
+    },
+    // 将照片复制到剪贴版
+    copyImgBtn (base64Data) {
+      const blobInput = this.convertBase64ToBlob(base64Data, 'image/png')
+      const clipboardItemInput = new ClipboardItem({ 'image/png': blobInput })
+      navigator.clipboard.write([clipboardItemInput])
+      this.$message.success('复制截图成功!')
+    },
+    convertBase64ToBlob (base64, type) {
+      var bytes = window.atob(base64)
+      var ab = new ArrayBuffer(bytes.length)
+      var ua = new Uint8Array(ab)
+      for (var i = 0; i < bytes.length; i++) {
+        ua[i] = bytes.charCodeAt(i)
+      }
+      return new Blob([ab], { type: type })
     }
   },
   watch: {
@@ -216,6 +269,7 @@ export default {
         align-items: center;
         border-bottom: 1px solid #eee;
         background-color: #f8f8f8;
+        justify-content: space-between;
         > div{
           display: flex;
           align-items: center;