[Pkg-javascript-commits] [pdf.js] 110/207: Disables broken rAF on iOS

[David Prévot]

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taffit pushed a commit to branch master
in repository pdf.js.

commit dccc709b500571960f24e83fd36005fe4cc512f5
Author: Yury Delendik <ydelendik at mozilla.com>
Date:   Tue Jun 17 12:44:52 2014 -0500

    Disables broken rAF on iOS
---
 web/compatibility.js | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/web/compatibility.js b/web/compatibility.js
index b603971..400a940 100644
--- a/web/compatibility.js
+++ b/web/compatibility.js
@@ -495,17 +495,25 @@ if (typeof PDFJS === 'undefined') {
   }
 })();
 
-// Support: IE<10, Android<4.0, iOS<5.0
+// Support: IE<10, Android<4.0, iOS
 (function checkRequestAnimationFrame() {
+  function fakeRequestAnimationFrame(callback) {
+    window.setTimeout(callback, 20);
+  }
+
+  var isIOS = /(iPad|iPhone|iPod)/g.test(navigator.userAgent);
+  if (isIOS) {
+    // requestAnimationFrame on iOS is broken, replacing with fake one.
+    window.requestAnimationFrame = fakeRequestAnimationFrame;
+    return;
+  }
   if ('requestAnimationFrame' in window) {
     return;
   }
   window.requestAnimationFrame =
     window.mozRequestAnimationFrame ||
     window.webkitRequestAnimationFrame ||
-    (function fakeRequestAnimationFrame(callback) {
-      window.setTimeout(callback, 20);
-    });
+    fakeRequestAnimationFrame;
 })();
 
 (function checkCanvasSizeLimitation() {

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