Determine The Width Of A Dynamic Css3 Multicolumn Div Width Fixed Column-width
I have a DIV container filled with a dynamic text. The length of the text can be different. The DIV container has a fixed height but no width. The Text is formatted as CSS3 Multico
Solution 1:
I ran into the same problem trying to paginate an article horizontally using css3 columns as pages. Here's my solution as a jQuery plugin:
http://jsfiddle.net/rkarbowski/Sfyyy/
Here's the idea: you insert a blank <span> tag at the end of your column content and use .position() to grab its left position relative to the parent container, and add one -webkit-column-width (because .position() only tells you the distance to the left coordinate of the <span>).
Here's a little quirk that I don't understand. To get the correct width, you also have to subtract one -webkit-column-gap. In my mind, the distance between .position().left and the edge of the container should only be the width of the final column, -webkit-column-width. Can anyone explain this one? Am I just bad at math?
Sorry if the plugin code is sloppy; my experience with jQuery is limited :)
(Credit where it's due: idea adapted from How to Get CSS3 Multi-Column Count in Javascript.)
Solution 2:
This works for me. http://jsfiddle.net/peduarte/LRWL8/
Are you wrapping your js in $(document).ready()?
Solution 3:
Here is the syntax to go about:
var div = document.getElementById(columnWrapper);
var width = div.css("width"),
var height = div.css("height");
Solution 4:
I also ran in a similar problem, where I had to get the size of the columns to be included in paging mechanism.
I share the code, I hope could be useful.
Credit to rkarbowski for the idea :-)
<!--
Horizontal sliding carousel with multi columns.
--><html><head><title></title><metahttp-equiv="Content-Type"content="text/html; charset=UTF-8"><scriptsrc="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script><style>#prev, #next, #infopage {
position: fixed;
width: 50px;
height: 50px;
background-color: yellow;
margin: 10px;
}
#prev {
top: 600px;
left: 0px;
}
#next {
top: 600px;
left: 60px;
}
#infopage {
top: 600px;
left: 120px;
background-color: lavender;
}
.guide {
position: fixed;
top: 0px;
left: 0px;
width: 1000px;
height: 500px;
-webkit-box-sizing: border-box;
border: 20px solid red
}
#content {
position: fixed;
top: 0px;
left: 0px;
width: 1000px;
}
#inner {
-webkit-column-count: 2;
-webkit-column-gap: 20px;
-webkit-column-width: 490px;
height: 500px;
}
</style><script>var cntWidth, // content total length
areaWidth = 1000, // visible area
columnWidth = 490, // 1 columns minus gap
pageTot, // total number of pages
pageCur = 1, // active page
gap = 20, // space between columns
animDuration = 400, /* jquery default 400 */
contentPos = null; // content left positionfunctionrenderInfoPage() {
var elm = $('#infopage');
elm.html('page ' + pageCur + ' of ' + pageTot);
}
functiongetPositionDom() {
// keep in memory dom positionvar elm = $('#content');
var pos = elm.offset();
contentPos = pos.left;
}
// has content a jquery animation queue?functionhasContentAnimateQueue() {
var queueN = $('#content').queue().length;
if (queueN !== 0) {
returntrue;
} else {
returnfalse;
}
}
functionnext() {
if (pageTot > 0 && pageCur < pageTot) {
if (!hasContentAnimateQueue()) {
var elm = $('#content');
var newPos = contentPos - areaWidth - gap;
contentPos = newPos;
elm.animate({left: newPos + 'px'}, animDuration);
pageCur++;
renderInfoPage();
}
}
}
functionprev() {
if (pageCur > 1) {
if (!hasContentAnimateQueue()) {
var elm = $('#content');
var newPos = contentPos + areaWidth + gap;
contentPos = newPos;
//elm.css({left: newPos + 'px'}); // use this for no animation
elm.animate({left: newPos + 'px'}, animDuration);
pageCur--;
renderInfoPage();
}
}
}
functionstart() {
// add event listenersvar elm = document.getElementById('prev');
elm.addEventListener('click', prev);
elm = document.getElementById('next');
elm.addEventListener('click', next);
// trick: add a span at the end of the scrolling, get its position so to find out total how long was were columns var elmSpan = $('#inner').append('<span></span>');
var posSpan = $('#inner').find('span:last-of-type').position().left;
// add the width of the final column//posSpan += parseInt($('#inner').css('-webkit-column-width'), 10);
posSpan += columnWidth;
// subtract one column gap (not sure why this is necessary?)//pos -= parseInt($('#inner').css('-webkit-column-gap'),10);
posSpan -= gap;
// remove empty <span>
$('#inner').find('span:last-of-type').remove();
cntWidth = posSpan; // the total clumns width!var result = cntWidth / areaWidth;
if (result <= 1) {
pageTot = 1; // in case of content wich is wihtin the first page
} else {
pageTot = Math.ceil(cntWidth / areaWidth);
}
// first timerenderInfoPage();
getPositionDom();
}
</script></head><bodyonload="start()"><divclass="guide"></div><divid="content"><divid="inner"><figure><imgsrc="http://www.w3schools.com/images/pulpit.jpg"alt="Pulpit rock"width="304"height="228"><figcaption>A cheeky macaque, Lower Kintaganban River, Borneo. Original by Richard Clark</figcaption></figure><p>
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Vestibulum porta rhoncus nulla sed feugiat. Suspendisse sollicitudin auctor tellus sit amet sollicitudin. Integer feugiat vehicula urna ut malesuada. Mauris leo risus, tempor id fermentum vel, ornare quis risus. Nullam vel dolor ac metus ullamcorper interdum ac ut nibh. Nunc sit amet tellus sit amet libero commodo ultricies. Maecenas posuere mauris laoreet enim tristique lacinia. Etiam eget congue velit.
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Vestibulum porta rhoncus nulla sed feugiat. Suspendisse sollicitudin auctor tellus sit amet sollicitudin. Integer feugiat vehicula urna ut malesuada. Mauris leo risus, tempor id fermentum vel, ornare quis risus. Nullam vel dolor ac metus ullamcorper interdum ac ut nibh. Nunc sit amet tellus sit amet libero commodo ultricies. Maecenas posuere mauris laoreet enim tristique lacinia. Etiam eget congue velit.
</p><p>
Vestibulum porta rhoncus nulla sed feugiat. Suspendisse sollicitudin auctor tellus sit amet sollicitudin. Integer feugiat vehicula urna ut malesuada. Mauris leo risus, tempor id fermentum vel, ornare quis risus. Nullam vel dolor ac metus ullamcorper interdum ac ut nibh. Nunc sit amet tellus sit amet libero commodo ultricies. Maecenas posuere mauris laoreet enim tristique lacinia. Etiam eget congue velit.
</p><p>
Vestibulum porta rhoncus nulla sed feugiat. Suspendisse sollicitudin auctor tellus sit amet sollicitudin. Integer feugiat vehicula urna ut malesuada. Mauris leo risus, tempor id fermentum vel, ornare quis risus. Nullam vel dolor ac metus ullamcorper interdum ac ut nibh. Nunc sit amet tellus sit amet libero commodo ultricies. Maecenas posuere mauris laoreet enim tristique lacinia. Etiam eget congue velit.
</p><p>
Vestibulum porta rhoncus nulla sed feugiat. Suspendisse sollicitudin auctor tellus sit amet sollicitudin. Integer feugiat vehicula urna ut malesuada. Mauris leo risus, tempor id fermentum vel, ornare quis risus. Nullam vel dolor ac metus ullamcorper interdum ac ut nibh. Nunc sit amet tellus sit amet libero commodo ultricies. Maecenas posuere mauris laoreet enim tristique lacinia. Etiam eget congue velit.
</p><p>
Vestibulum porta rhoncus nulla sed feugiat. Suspendisse sollicitudin auctor tellus sit amet sollicitudin. Integer feugiat vehicula urna ut malesuada. Mauris leo risus, tempor id fermentum vel, ornare quis risus. Nullam vel dolor ac metus ullamcorper interdum ac ut nibh. Nunc sit amet tellus sit amet libero commodo ultricies. Maecenas posuere mauris laoreet enim tristique lacinia. Etiam eget congue velit.
</p><p>
Vestibulum porta rhoncus nulla sed feugiat. Suspendisse sollicitudin auctor tellus sit amet sollicitudin. Integer feugiat vehicula urna ut malesuada. Mauris leo risus, tempor id fermentum vel, ornare quis risus. Nullam vel dolor ac metus ullamcorper interdum ac ut nibh. Nunc sit amet tellus sit amet libero commodo ultricies. Maecenas posuere mauris laoreet enim tristique lacinia. Etiam eget congue velit.
</p><p>
Vestibulum porta rhoncus nulla sed feugiat. Suspendisse sollicitudin auctor tellus sit amet sollicitudin. Integer feugiat vehicula urna ut malesuada. Mauris leo risus, tempor id fermentum vel, ornare quis risus. Nullam vel dolor ac metus ullamcorper interdum ac ut nibh. Nunc sit amet tellus sit amet libero commodo ultricies. Maecenas posuere mauris laoreet enim tristique lacinia. Etiam eget congue velit.
</p><p>
Vestibulum porta rhoncus nulla sed feugiat. Suspendisse sollicitudin auctor tellus sit amet sollicitudin. Integer feugiat vehicula urna ut malesuada. Mauris leo risus, tempor id fermentum vel, ornare quis risus. Nullam vel dolor ac metus ullamcorper interdum ac ut nibh. Nunc sit amet tellus sit amet libero commodo ultricies. Maecenas posuere mauris laoreet enim tristique lacinia. Etiam eget congue velit.
</p></div></div><divid="prev">PREV</div><divid="next">NEXT</div><divid="infopage"></div></body></html>
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