Révision 74f6bef0
Ajouté par Assos Assos il y a plus de 10 ans
| drupal7/sites/all/themes/adaptivetheme/at_core/scripts/scalefix.js | ||
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// Optimized scalefix by jdalton: https://gist.github.com/903131 |
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// Prevents iOS from overscaling the page on orientation change. |
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// 1) won't restrict viewport if JS is disabled |
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// 2) uses capture phase |
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// 3) assumes last viewport meta is the one to edit (incase for some odd reason there is more than one) |
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// 4) feature inference (no sniffs, behavior should be ignored on other enviros) |
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// 5) removes event handler after fired |
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!function(doc) {
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var addEvent = 'addEventListener', |
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type = 'gesturestart', |
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qsa = 'querySelectorAll', |
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scales = [1, 1], |
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meta = qsa in doc ? doc[qsa]('meta[name=viewport]') : [];
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function fix() {
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meta.content = 'width=device-width,minimum-scale=' + scales[0] + ',maximum-scale=' + scales[1]; |
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doc.removeEventListener(type, fix, !0); |
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} |
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if ((meta = meta[meta.length - 1]) && addEvent in doc) {
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fix(); |
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scales = [.25, 1.6]; |
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doc[addEvent](type, fix, !0); |
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} |
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}(document); |
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/*! A fix for the iOS orientationchange zoom bug. |
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Script by @scottjehl, rebound by @wilto. |
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MIT / GPLv2 License. |
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*/ |
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(function(w){
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// This fix addresses an iOS bug, so return early if the UA claims it's something else. |
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var ua = navigator.userAgent; |
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if( !( /iPhone|iPad|iPod/.test( navigator.platform ) && /OS [1-5]_[0-9_]* like Mac OS X/i.test(ua) && ua.indexOf( "AppleWebKit" ) > -1 ) ){
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return; |
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} |
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var doc = w.document; |
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if( !doc.querySelector ){ return; }
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var meta = doc.querySelector( "meta[name=viewport]" ), |
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initialContent = meta && meta.getAttribute( "content" ), |
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disabledZoom = initialContent + ",maximum-scale=1", |
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enabledZoom = initialContent + ",maximum-scale=10", |
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enabled = true, |
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x, y, z, aig; |
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if( !meta ){ return; }
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function restoreZoom(){
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meta.setAttribute( "content", enabledZoom ); |
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enabled = true; |
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} |
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function disableZoom(){
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meta.setAttribute( "content", disabledZoom ); |
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enabled = false; |
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} |
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function checkTilt( e ){
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aig = e.accelerationIncludingGravity; |
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x = Math.abs( aig.x ); |
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y = Math.abs( aig.y ); |
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z = Math.abs( aig.z ); |
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// If portrait orientation and in one of the danger zones |
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if( (!w.orientation || w.orientation === 180) && ( x > 7 || ( ( z > 6 && y < 8 || z < 8 && y > 6 ) && x > 5 ) ) ){
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if( enabled ){
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disableZoom(); |
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} |
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} |
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else if( !enabled ){
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restoreZoom(); |
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} |
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} |
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w.addEventListener( "orientationchange", restoreZoom, false ); |
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w.addEventListener( "devicemotion", checkTilt, false ); |
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})( this ); |
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