নেটিভ আইওএস জুম অক্ষম করে এবং এর পরিবর্তে জাভাস্ক্রিপ্টে জুম কার্যকারিতা বাস্তবায়নের মাধ্যমে আমি একটি নতুন কাজের সন্ধান পেয়েছি other
জুম / ওরিয়েন্টেশন সমস্যার বিভিন্ন অন্যান্য সমাধানের একটি দুর্দান্ত পটভূমি হলেন সেরজিও লোপস: প্রতিকৃতিতে ওরিয়েন্টেশন পরিবর্তনের জন্য বিখ্যাত আইওএস জুম বাগের সমাধান ।
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" id="viewport" content="user-scalable=no,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0" />
<title>Robocat mobile Safari zoom fix</title>
<style>
body {
padding: 0;
margin: 0;
}
#container {
-webkit-transform-origin: 0px 0px;
-webkit-transform: scale3d(1,1,1);
/* shrink-to-fit needed so can measure width of container http://stackoverflow.com/questions/450903/make-css-div-width-equal-to-contents */
display: inline-block;
*display: inline;
*zoom: 1;
}
#zoomfix {
opacity: 0;
position: absolute;
z-index: -1;
top: 0;
left: 0;
}
</style>
</head>
<body>
<input id="zoomfix" disabled="1" tabIndex="-1">
<div id="container">
<style>
table {
counter-reset: row cell;
background-image: url(http://upload.wikimedia.org/wikipedia/commons/3/38/JPEG_example_JPG_RIP_010.jpg);
}
tr {
counter-increment: row;
}
td:before {
counter-increment: cell;
color: white;
font-weight: bold;
content: "row" counter(row) ".cell" counter(cell);
}
</style>
<table cellspacing="10">
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</table>
</div>
<script>
(function() {
var viewportScale = 1;
var container = document.getElementById('container');
var scale, originX, originY, relativeOriginX, relativeOriginY, windowW, windowH, containerW, containerH, resizeTimer, activeElement;
document.addEventListener('gesturestart', function(event) {
scale = null;
originX = event.pageX;
originY = event.pageY;
relativeOriginX = (originX - window.pageXOffset) / window.innerWidth;
relativeOriginY = (originY - window.pageYOffset) / window.innerHeight;
windowW = window.innerWidth;
windowH = window.innerHeight;
containerW = container.offsetWidth;
containerH = container.offsetHeight;
});
document.addEventListener('gesturechange', function(event) {
event.preventDefault();
if (originX && originY && event.scale && event.pageX && event.pageY) {
scale = event.scale;
var newWindowW = windowW / scale;
if (newWindowW > containerW) {
scale = windowW / containerW;
}
var newWindowH = windowH / scale;
if (newWindowH > containerH) {
scale = windowH / containerH;
}
if (viewportScale * scale < 0.1) {
scale = 0.1/viewportScale;
}
if (viewportScale * scale > 10) {
scale = 10/viewportScale;
}
container.style.WebkitTransformOrigin = originX + 'px ' + originY + 'px';
container.style.WebkitTransform = 'scale3d(' + scale + ',' + scale + ',1)';
}
});
document.addEventListener('gestureend', function() {
if (scale && (scale < 0.95 || scale > 1.05)) {
viewportScale *= scale;
scale = null;
container.style.WebkitTransform = '';
container.style.WebkitTransformOrigin = '';
document.getElementById('viewport').setAttribute('content', 'user-scalable=no,initial-scale=' + viewportScale + ',minimum-scale=' + viewportScale + ',maximum-scale=' + viewportScale);
document.body.style.WebkitTransform = 'scale3d(1,1,1)';
// Without zoomfix focus, after changing orientation and zoom a few times, the iOS viewport scale functionality sometimes locks up (and completely stops working).
// The reason I thought this hack would work is because showing the keyboard is the only way to affect the viewport sizing, which forces the viewport to resize (even though the keyboard doesn't actually get time to open!).
// Also discovered another amazing side effect: if you have no meta viewport element, and focus()/blur() in gestureend, zoom is disabled!! Wow!
var zoomfix = document.getElementById('zoomfix');
zoomfix.disabled = false;
zoomfix.focus();
zoomfix.blur();
setTimeout(function() {
zoomfix.disabled = true;
window.scrollTo(originX - relativeOriginX * window.innerWidth, originY - relativeOriginY * window.innerHeight);
// This forces a repaint. repaint *intermittently* fails to redraw correctly, and this fixes the problem.
document.body.style.WebkitTransform = '';
}, 0);
}
});
})();
</script>
</body>
</html>
এটি উন্নত করা যেতে পারে, তবে আমার প্রয়োজনের জন্য এটি আমার দেখা অন্যান্য সমস্ত সমাধানগুলির মধ্যে ঘটে যাওয়া বড় ধরনের ঘাটতিগুলি এড়িয়ে চলে। এখন পর্যন্ত আমি কেবল এটি iOS4 সহ একটি আইপ্যাড 2 এ মোবাইল সাফারি ব্যবহার করে পরীক্ষা করেছি।
ফোকাস () / অস্পষ্টতা () জুম কার্যকারিতার মাঝে মাঝে লকআপ প্রতিরোধের জন্য একটি কাজ যা অরিয়েন্টেশন পরিবর্তন করার পরে এবং কয়েকবার জুম করার পরে ঘটতে পারে।
ডকুমেন্ট.বডি.স্টাইল সেট করা একটি পূর্ণ স্ক্রিন পুনরায় রঙ করার জন্য বাধ্য করে, যা মাঝে মাঝে মাঝে মাঝে এমন সমস্যা এড়িয়ে যায় যেখানে জুমের পরে পুনরায় রঙটি খারাপভাবে ব্যর্থ হয়।