libs/js/jquery-mobile-1.1.0/js/jquery.mobile.zoom.iosorientationfix.js

   1 //>>excludeStart("jqmBuildExclude", pragmas.jqmBuildExclude);
   2 //>>description: Fixes the orientation change bug in iOS when switching between landspace and portrait
   3 //>>label: iOS Orientation Change Fix
   4 //>>group: Utilities
   5
   6 define( [ "jquery", "./jquery.mobile.core", "./jquery.mobile.zoom" ], function( $ ) {
   7 //>>excludeEnd("jqmBuildExclude");
   8 ( function( $, window ) {
   9
  10         // This fix addresses an iOS bug, so return early if the UA claims it's something else.
  11         if( !(/iPhone|iPad|iPod/.test( navigator.platform ) && navigator.userAgent.indexOf( "AppleWebKit" ) > -1 ) ){
  12                 return;
  13         }
  14
  15     var zoom = $.mobile.zoom,
  16                 evt, x, y, z, aig;
  17
  18     function checkTilt( e ){
  19                 evt = e.originalEvent;
  20                 aig = evt.accelerationIncludingGravity;
  21
  22                 x = Math.abs( aig.x );
  23                 y = Math.abs( aig.y );
  24                 z = Math.abs( aig.z );
  25
  26                 // If portrait orientation and in one of the danger zones
  27         if( !window.orientation && ( x > 7 || ( ( z > 6 && y < 8 || z < 8 && y > 6 ) && x > 5 ) ) ){
  28                         if( zoom.enabled ){
  29                                 zoom.disable();
  30                         }
  31         }
  32                 else if( !zoom.enabled ){
  33                         zoom.enable();
  34         }
  35     }
  36
  37     $( window )
  38                 .bind( "orientationchange.iosorientationfix", zoom.enable )
  39                 .bind( "devicemotion.iosorientationfix", checkTilt );
  40
  41 }( jQuery, this ));
  42 //>>excludeStart("jqmBuildExclude", pragmas.jqmBuildExclude);
  43 });
  44 //>>excludeEnd("jqmBuildExclude");