From fb2d5a08ad9f26c1bec934a4a7b58e20149f6c3f Mon Sep 17 00:00:00 2001
From: Kostanjevec <kostanjevecj@fdv.uni-lj.si>
Date: Sat, 4 Jun 2022 14:22:54 +0200
Subject: [PATCH] pdfje zdaj renderamo z pdf.js

---
 templates/deck/index.html | 66 +++++++++++++++++++++++++++++----------
 1 file changed, 50 insertions(+), 16 deletions(-)

diff --git a/templates/deck/index.html b/templates/deck/index.html
index d9dbeaf..555f2b4 100644
--- a/templates/deck/index.html
+++ b/templates/deck/index.html
@@ -8,27 +8,61 @@
   <p>BODY</p>
 
   <article class="post">
-    <div>
-        <header>
-        <h1>{{ card['title'] }}</h1>
-        </header>
+    <header>
+      <h1>{{ card['title'] }}</h1>
+    </header>
 
-        <!--iframe src={{ card['item_location'] }} width="auto" height="auto"> </iframe-->   
-        
-        <div id="pdf-doc"></div>
+    <!--iframe src={{ card['item_location'] }} width="auto" height="auto"> </iframe-->   
+    
+    <canvas id="pdf-doc"></canvas>
 
-        <form method="post">
-          <button input type="submit" name="rate" data-cardtitle=card[title] value="Yes">Yes</button>
-          <button input type="submit" name="rate" value="Maybe">Maybe</button>
-          <button input type="submit" name="rate" value="No">No</button>
-        </form>
-      </div>
+    <form method="post">
+      <button input type="submit" name="rate" data-cardtitle=card[title] value="Yes">Yes</button>
+      <button input type="submit" name="rate" value="Maybe">Maybe</button>
+      <button input type="submit" name="rate" value="No">No</button>
+    </form>
   </article>
 
-  <script type="text/javascript" src="{{ url_for('static', filename='js/pdfobject.min.js') }}"></script>
+  <script type="text/javascript" src="{{ url_for('static', filename='js/pdf.js') }}"></script>
+  <script type="text/javascript" src="{{ url_for('static', filename='js/pdf.worker.js') }}"></script>
   <script type="text/javascript">
     document.addEventListener('DOMContentLoaded', function (){
-      PDFObject.embed("{{ card['item_location'] }}", "#pdf-doc");
-    });
+      var zoomed = false;
+      var canvas = document.getElementById('pdf-doc');
+      var context = canvas.getContext('2d');
+
+      var openPage = function(pdfFile, pageNumber) {
+          pdfFile.getPage(pageNumber).then(function(page) {
+            var scale = 1.5;
+            var viewport = page.getViewport({ scale: scale, });
+            // Support HiDPI-screens.
+            var outputScale = window.devicePixelRatio || 1;
+
+            canvas.width = Math.floor(viewport.width * outputScale);
+            canvas.height = Math.floor(viewport.height * outputScale);
+            canvas.style.width = Math.floor(viewport.width) + "px";
+            canvas.style.height =  Math.floor(viewport.height) + "px";
+
+            var transform = outputScale !== 1
+            ? [outputScale, 0, 0, outputScale, 0, 0]
+            : null;
+
+              var renderContext = {
+                  canvasContext: context,
+                  viewport: viewport,
+                  transform: transform
+              };
+
+              page.render(renderContext);
+          });
+      };
+      
+      pdfjsLib.disableStream = true;
+      var doc = pdfjsLib.getDocument('{{ card["item_location"] }}');
+      doc.promise.then(function(pdf) {
+        // Do something with the PDF file stored in the `pdf` variable
+        openPage(pdf, 1);
+      });
+  });
   </script>
 {% endblock %}
\ No newline at end of file