Alternative fix fonts issue in printing FranckFreiburger#156

Brendan-MacKenzie · Jul 18, 2023 · d307293 · d307293
1 parent 1a47de9
commit d307293
Showing 1 changed file with 17 additions and 2 deletions.
diff --git a/src/pdfjsWrapper.js b/src/pdfjsWrapper.js
@@ -89,10 +89,14 @@ export default function(PDFJS) {
 			var CSS_UNITS = 96.0 / 72.0;
 
 			var iframeElt = document.createElement('iframe');
+			var tempElt = document.createElement('div');
+			tempElt.style.cssText = 'display: none';
+            window.document.body.appendChild(tempElt);
 
 			function removeIframe() {
 
 				iframeElt.parentNode.removeChild(iframeElt);
+				tempElt.parentNode.removeChild(tempElt);
 			}
 
 			new Promise(function(resolve, reject) {
@@ -120,7 +124,7 @@ export default function(PDFJS) {
 					var viewport = page.getViewport({ scale: 1 });
 					win.document.head.appendChild(win.document.createElement('style')).textContent =
 						'@supports ((size:A4) and (size:1pt 1pt)) {' +
-							'@page { margin: 1pt; size: ' + ((viewport.width * PRINT_UNITS) / CSS_UNITS) + 'pt ' + ((viewport.height * PRINT_UNITS) / CSS_UNITS) + 'pt; }' +
+							'@page { size: ' + ((viewport.width * PRINT_UNITS) / CSS_UNITS) + 'pt ' + ((viewport.height * PRINT_UNITS) / CSS_UNITS) + 'pt; }' +
 						'}' +
 
 						'@media print {' +
@@ -151,7 +155,8 @@ export default function(PDFJS) {
 
 							var viewport = page.getViewport({ scale: 1 });
 
-							var printCanvasElt = win.document.body.appendChild(win.document.createElement('canvas'));
+							// var printCanvasElt = win.document.body.appendChild(win.document.createElement('canvas'));
+							var printCanvasElt = tempElt.appendChild(document.createElement('canvas'));
 							printCanvasElt.width = (viewport.width * PRINT_UNITS);
 							printCanvasElt.height = (viewport.height * PRINT_UNITS);
 
@@ -170,6 +175,16 @@ export default function(PDFJS) {
 
 				Promise.all(allPages)
 				.then(function() {
+
+					for (var i = 0; i < tempElt.children.length; ++i) {
+                        var child = tempElt.children[i];
+                        var canvas = child.cloneNode(true);
+
+                        var ctx = canvas.getContext('2d');
+                        ctx.drawImage(child, 0, 0);
+
+                        win.document.body.appendChild(canvas);
+                    }
 
 					win.focus(); // Required for IE
 					if (win.document.queryCommandSupported('print')) {