Add keyboard shortcuts to navigate pages with left and right arrow keys

This is the behavior of Adobe Reader.app and Apple's Preview.app.

diff --git a/web/viewer.js b/web/viewer.js
index d9732c2a3e562976bb067820fee134098fc7b215..e8b94af46b905247e057b05cabefc8860b7be736 100644 (file)
--- a/web/viewer.js
+++ b/web/viewer.js
@@ -912,6 +912,14 @@ window.addEventListener('keydown', function keydown(evt) {
       PDFView.setScale(kDefaultScale, true);
       handled = true;
       break;
+    case 37: // left arrow
+      PDFView.page--;
+      handle = true;
+      break;
+    case 39: // right arrow
+      PDFView.page++;
+      handle = true;
+      break;
   }
 
   if (handled) {