fix:打印调整

LH_PC
1 parent cd4095bd
Showing 1 changed file with 63 additions and 42 deletions
src/utils/index.js
@@ -276,7 +276,7 @@ export function b64DecodeUnicode(str) {
         })
         .join("")
     );
-  } catch (e) {}
+  } catch (e) { }
   return uni;
 }
  
@@ -885,12 +885,12 @@ export function formatGradeNameClass(data) {
  
 ///试卷定制化打印
 export async function paperPrint(paper) {
-  let printWin = window.open("", "_blank", "width=800,height=600,resizable=no"); 
+  let printWin = window.open("", "_blank", "width=800,height=600,resizable=no");
   var browser = getBrowserEngine(printWin);
   var subjectName = paper.subjectName;
   var paperTitle = paper.title;
   var paperQuestions = paper.questionList;
-  function getBrowserEngine(windowParams) { 
+  function getBrowserEngine(windowParams) {
     if (windowParams.navigator.userAgent.indexOf("Edge") > -1) {
       return "EdgeHTML";
     }
@@ -911,6 +911,10 @@ export async function paperPrint(paper) {
     }
     return "Blink"; // Assume it's Chrome, Safari, or an alternative Blink-based browser
   }
+  function windowPrint(windowParams) {
+    windowParams.print();
+    windowParams.close();
+  }
   function numberToChinese(num) {
     const chineseDigits = ["零", "一", "二", "三", "四", "五", "六", "七", "八", "九"];
     const chineseUnits = ["", "十", "百", "千", "万", "亿"];
@@ -967,19 +971,21 @@ export async function paperPrint(paper) {
       printWin.document.documentElement.scrollHeight, // 整个文档高度
       printWin.document.body.scrollHeight            // Body 的高度
     );
-    const totalHeightMM = totalHeightPx * 25.4 / 96;
-    // ie浏览器高度
-    var A4HeightMM = 287; 
-    if (browser == "Google Chrome") {
-      A4HeightMM = 297;
-    }
-    var pages = Math.ceil(totalHeightMM / A4HeightMM) + 1;
-    for (var page = 0; page < pages; page++) {
-      var pageFooteDiv = printWin.document.createElement('div');
-      pageFooteDiv.classList.add('page-footer');
-      pageFooteDiv.innerText = `${paperTitle}  ${subjectName}  第${page + 1}页（共${pages}页）`;
-      pageFooteDiv.style.top = (page + 1) * A4HeightMM + (page * 5.5) + 'mm';
-      printWin.document.body.appendChild(pageFooteDiv);
+    const a4Box = printWin.document.createElement('div');
+    a4Box.classList.add('altA4Box');
+    printWin.document.body.appendChild(a4Box);
+    const a4BoxHeightPx = a4Box.offsetHeight;
+    if (a4BoxHeightPx > 0) {
+      printWin.document.body.removeChild(a4Box);
+      var pages = Math.ceil(totalHeightPx / a4BoxHeightPx);
+      if (pages > 2) pages += 1;
+      for (var page = 0; page < pages; page++) {
+        var pageFooteDiv = printWin.document.createElement('div');
+        pageFooteDiv.classList.add('page-footer');
+        pageFooteDiv.innerText = `${paperTitle}  ${subjectName}  第${page + 1}页（共${pages}页）`;
+        pageFooteDiv.style.top = (page + 1) * a4BoxHeightPx + (page * 25) + 'px';
+        printWin.document.body.appendChild(pageFooteDiv);
+      }
     }
   }
   // size: A4 portrait; 
@@ -991,25 +997,33 @@ export async function paperPrint(paper) {
       @media print 
       {
           @page {  
-            size: A4 portrait;   
-            height: 300mm;
-            margin-top:5mm;
+            size: A4 portrait;    
+            margin-top:0mm;
             margin-bottom:10mm;
-            margin-left:2mm;
-            margin-right:2mm;
+            margin-left:4mm;
+            margin-right:4mm;
           }    
-          
-          body {
-            counter-reset: page-number; /* 重置页码计数器 */
-          } 
-
-          mn {
-            padding-top:2px;
-          } 
-      }    
+          .altA4Box {
+            display:none;
+          }
+      }  
+      mn {
+        padding-top:2px;
+      } 
+      .bodyBox {
+        width: 210mm;
+        padding-top:0mm;
+        padding-bottom:0mm;
+        padding-left:4mm;
+        padding-right:4mm;
+      }   
+      .altA4Box {
+        height: 317mm; 
+      }
       table tfoot {
-        height: 0px;
+        height: 30px;
         display: table-footer-group;  
+       
       }
       table thead {
         height: 20px;
@@ -1092,6 +1106,9 @@ export async function paperPrint(paper) {
  
   printWin.document.head.appendChild(style);
  
+  const bodyBoxDom = printWin.document.createElement('div');
+  bodyBoxDom.classList.add('bodyBox');
+
   const titleBoxDom = printWin.document.createElement('div');
   titleBoxDom.classList.add('title-header');
   const titleDom = printWin.document.createElement('h3');
@@ -1102,7 +1119,7 @@ export async function paperPrint(paper) {
   subjectDom.classList.add('title-content');
   titleBoxDom.appendChild(titleDom);
   titleBoxDom.appendChild(subjectDom);
-  printWin.document.body.appendChild(titleBoxDom);
+  bodyBoxDom.appendChild(titleBoxDom);
  
   const studentInputBoxDom = printWin.document.createElement('div');
   studentInputBoxDom.classList.add('student-input');
@@ -1115,9 +1132,9 @@ export async function paperPrint(paper) {
   studentInputBoxDom.appendChild(studentClassInputDom);
   studentInputBoxDom.appendChild(studentNameInputDom);
   studentInputBoxDom.appendChild(studentNoInputDom);
-  printWin.document.body.appendChild(studentInputBoxDom);
+  bodyBoxDom.appendChild(studentInputBoxDom);
  
-  const tableDom = printWin.document.createElement('table'); 
+  const tableDom = printWin.document.createElement('table');
   const theadDom = printWin.document.createElement('thead');
   const theadTrDom = printWin.document.createElement('tr');
   theadTrDom.appendChild(printWin.document.createElement('th'));
@@ -1166,12 +1183,12 @@ export async function paperPrint(paper) {
       qTbodyContentTdDom.appendChild(questionDom);
       qTbodyTrDom.appendChild(qTbodyLeftAltTdDom);
       qTbodyTrDom.appendChild(qTbodyContentTdDom);
-      qTbodyTrDom.appendChild(qTbodyRightAltTdDom); 
+      qTbodyTrDom.appendChild(qTbodyRightAltTdDom);
       tbodyDom.appendChild(qTbodyTrDom);
     }
   }
   tableDom.appendChild(tbodyDom);
-  printWin.document.body.appendChild(tableDom);
+  bodyBoxDom.appendChild(tableDom);
  
   const tfootDom = printWin.document.createElement('tfoot');
   const tfootTrDom = printWin.document.createElement('tr');
@@ -1180,17 +1197,21 @@ export async function paperPrint(paper) {
   tfootTrDom.appendChild(printWin.document.createElement('td'));
   tfootDom.appendChild(tfootTrDom);
   tableDom.appendChild(tfootDom);
+  printWin.document.body.appendChild(bodyBoxDom);
   // generatePageParams();
   const iamges = printWin.document.querySelectorAll('img');
   if (iamges.length >= 1) {
-    iamges[iamges.length - 1].onload = function () {
-      printWin.print();
-      printWin.close();
+    var lastImage = iamges[iamges.length - 1];
+    if (lastImage.complete) {
+      windowPrint(printWin);
+    } else {
+      lastImage.onload = function () {
+        windowPrint(printWin);
+      }
     }
   } else {
-    printWin.print(); 
-    printWin.close();
-  } 
+    windowPrint(printWin);
+  }
 }
  
 export function tablePrint(options) {