qt5base-lts/examples/webkit/webkit-guide/css3_scroll.htm

95 lines
3.2 KiB
HTML
Raw Normal View History

<!--
This file is part of QtWebKit
Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
Contact: http://www.qt-project.org/legal
You may use this file under the terms of the BSD license as follows:
"Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
o Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
o Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
o Neither the name of Digia Plc and its Subsidiary(-ies) nor
the names of its contributors may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-->
<!DOCTYPE html>
<html>
<head>
<meta name='viewport' content='width=device-width' />
<title>Custom Scrollbars</title>
<link href='css/css3_scroll.css' type='text/css' rel='stylesheet'/>
</head>
<body>
<section>
<article>
<h3>Custom Scrollbars</h3>
<p>
Unlike standard text, linebreaks cannot appear arbitrarily within
blocks of code. Wide lines may be difficult to read within a
narrow-screen mobile interface:
</p>
<pre>
window.onload = function() {
var aside = document.querySelector('#related');
document.querySelector('#main').addEventListener('mouseup', function(event){
var thresholdDec = 0.5;
var totalHeight = event.currentTarget.scrollHeight;
var tapHeight = event.layerY;
var tapHeightDec = tapHeight / totalHeight;
var minHeight = 360;
if ( tapHeight < minHeight ) aside.className = '';
if (tapHeightDec > thresholdDec ) {
aside.className = 'visible';
}
else {
aside.className = '';
}
});
};
</pre>
<p>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec feugiat
gravida viverra. Vivamus ipsum felis, cursus sed venenatis nec, tempus
ac tellus. Praesent luctus, risus eu vestibulum mollis, arcu mauris
mollis ante, id mollis risus lectus ornare nisl. Aenean elementum arcu
sed nibh faucibus pellentesque. Aliquam erat volutpat. Mauris tempor,
urna at dignissim pellentesque, velit lacus dictum sem, non porttitor
felis nulla nec risus. Donec a massa felis, a congue purus. Nullam et
turpis diam. Aenean vestibulum egestas metus, eu sodales dolor
venenatis quis. Aenean augue orci, facilisis et convallis ut, egestas
at neque.
</p>
</article>
</section>
</body>
</html>