CSS to keep middle image in 100% width slideshow always in center - css

Im trying to achive a slideshow that looks like this
http://ge.tt/api/1/files/2AjKcVM/0/blob/x675?noinc=1
where the width is 100%, and keeps scrolling infinitely left or right, but always having an image in the center no matter the browser resolution. This is what ive got so far
http://fourcreeklandscape.com/index2.html
the slideshow images have a width of 800px, the left most image has a margin-left of -25%... which sorta looks like it works in a 1280px screen size.... but doesnt look like its suppose to when i resize the window.
Heres the slideshow code im using
$(document).ready(function() {
//move he last list item before the first item. The purpose of this is if the user clicks to slide left he will be able to see the last item.
$('#carousel_ul li:first').before($('#carousel_ul li:last'));
//when user clicks the image for sliding right
$('#right_scroll img').click(function(){
//get the width of the items ( i like making the jquery part dynamic, so if you change the width in the css you won't have o change it here too ) '
var item_width = $('#carousel_ul li').outerWidth() + 10;
//calculae the new left indent of the unordered list
var left_indent = parseInt($('#carousel_ul').css('left')) - item_width;
//make the sliding effect using jquery's anumate function '
$('#carousel_ul:not(:animated)').animate({'left' : left_indent},500,function(){
//get the first list item and put it after the last list item (that's how the infinite effects is made) '
$('#carousel_ul li:last').after($('#carousel_ul li:first'));
//and get the left indent to the default -210px
$('#carousel_ul').css({'left' : '-210px'});
});
});
//when user clicks the image for sliding left
$('#left_scroll img').click(function(){
var item_width = $('#carousel_ul li').outerWidth() + 10;
/* same as for sliding right except that it's current left indent + the item width (for the sliding right it's - item_width) */
var left_indent = parseInt($('#carousel_ul').css('left')) + item_width;
$('#carousel_ul:not(:animated)').animate({'left' : left_indent},500,function(){
/* when sliding to left we are moving the last item before the first list item */
$('#carousel_ul li:first').before($('#carousel_ul li:last'));
/* and again, when we make that change we are setting the left indent of our unordered list to the default -210px */
$('#carousel_ul').css({'left' : '-210px'});
});
});});
Any ideas? thanks

You can put this CSS on #carousel_ul
left: 50%;
margin-left: -1200px;
Just make sure it goes left to right. The only problem is if someone has a monitor wider than maybe 2000px, they will get a bit on the left with no image, when the slideshow first starts - but I think that is very few people.

Related

Sticky navigation element jumps during scroll

In Firefox especially, I've run into an issue I can't figure out how to fix.
On the following page, when scrolling down the page jumps several times - mainly on smaller screens where the page doesn't have its full size displayed. You can replicate this issue by making your browser smaller than the page so you have to scroll.
It's on this page: http://www.nucanoe.com/frontier-accessories/
If I disable the position:fixed on the navigation selector, it fixes the issue - but we need the navigation to be sticky. Is there a solution to fix this? I'm thinking we may need to use jQuery somehow.
Thanks in advance!
After seeing you asking for help on another answer, I will try and explain more clearly for you.
The Problem
Your problem is when you add position:fixed to the navigation bar, it removes it from its place and sticks it at the top of the page. This is why the rest of your content jumps up - because the navigation bar is not where it was anymore.
How To Fix
You can get around this by wrapping your navigation element in a new div - let's call it nav-wrapper - and set its height to the same as your navigation element. These are known as placeholder elements. This new wrapper and your original navigation bar must always be the same height for the 'jump' to disappear.
<div class="nav-wrapper" style="height:80px;"> <-- add this
<div class="your-original-nav" style="height:80px"></div>
</div> <!-- add this
Now, when you set the navigation bar to fixed and it disappears to the top, the new wrapper we created with the same height keeps the page's content the same. When the fixed class has been removed, it sits back in the wrapper again, without pushing the content down.
A Suggestion
From what I can see on your site, there will be a big gap where the navigation bar was until the new fixed navigation reaches that point and covers it. What you want, is a little jQuery to figure out where to make the navigation fixed and where to hide it. I'll explain:
// cache the element
var $navBar = $('.your-original-nav');
// find original navigation bar position
var navPos = $navBar.offset().top;
// on scroll
$(window).scroll(function() {
// get scroll position from top of the page
var scrollPos = $(this).scrollTop();
// check if scroll position is >= the nav position
if (scrollPos >= navPos) {
$navBar.addClass('fixed');
} else {
$navBar.removeClass('fixed');
}
});
You may want to add further functionality to this example, as it is very, very basic. You would probably want to recalculate the offsets on window resize as one addition.
A Demo
This is a little demo which might help you - I was bored and feeling helpful :)
Made it this way now: Added an element before the nav:
<div class="nav-placeholder"></div>
And the jquery:
<script type="text/javascript">
$(document).on("scroll",function(){
if($(document).scrollTop()>150){
$(".nav-placeholder").height($(".nav").outerHeight());
} else {
$(".nav-placeholder").height(0);
}
});
</script>
When I scroll down to 150 the placeholder gets the height of the nav, when i scroll up again I set it's height to 0.
Here is a fiddle: https://jsfiddle.net/herrfischerhamburg/562wu62y/
You need to have a placeholder when your nav goes from relative to fixed.
Therefore you need to make a new div.
jQuery(".nav").wrap('<div class="nav-placeholder"></div>');
jQuery(".nav-placeholder").height(jQuery(".nav").outerHeight());
jQuery(".nav").wrapInner('<div class="nav-inner"></div>');
Remember to change ".nav", "nav-inner" and "nav-placeholder" to your desire.
For a fully functional sticky nav, check my website: http://www.swegre.se/
I solved the problem differently so on firefox as you can see in logs it scroll up itself so to stop this scrolling I made simple statement
$(document).ready(function () {
var header = $('#left-menu');
var offset = header.offset().top;
var up = true;
$(window).scroll(function () {
var scroll = $(window).scrollTop();
console.log(scroll + ' ' + offset )
if (scroll >= offset) {
header.addClass('sidebar-sticky');
if (up){
$(window).scrollTop(offset);
up=false;
}
} else {
up=true;
header.removeClass('sidebar-sticky');
}
});
});
that solution work for me when I can't specify height of div's I use.

Chrome (webkit ?) rotateX makes cursor not changing

I'm trying to rotate an image using the CSS property "transform".
Here is my code :
http://jsfiddle.net/Ucph5/4/
And here is the part (using jquery) that makes the rotation :
$('#rotationX').change(function () {
var rotationX = $(this).val();
for (index = 0; index < selectedElements.length; ++index) {
var selectedElement = $('#' + selectedElements[index]);
selectedElement.css('transform',
'rotateX(' + rotationX + 'deg) ' +
'rotateY(0deg) ' +
'rotateZ(0deg)');
}
});
The problem is that when I select an image (by clicking on it), then use the "range" input to rotate the actual image, and finally move my mouse back over the image, the cursor should be a "cursor", as stated in my CSS. But it appears that only half the image shows the "cursor", the other half seem not to be considered as part of the image and displays a mouse in its normal representation.
This problem does not appear on Firefox (I did not test with Internet Explorer or Safari).
I hope to be clear in my explanation. If you don't understand, I suggest you to click on one of the images, notice that the cursor is visible everywhere over this image, then change the "range" input value, go back over the image, and notice that the cursor appears only on half the image, and not the other.
Does anyone have any idea why this happens ? I tried using the "-webkit-transform" and I still have the problem.
Thanks in advance. :)
The selectable class is in the same z plane that the div that contains it.
When you rotate it, half of it is above the div, and the other half is under the div.
The half that is under the div wont't change the cursor, because it is the div and not the selectable that is under the cursor.
To solve it, make it stay above the parent div (with a translateZ)
selectedElement.css('transform',
'translateZ(100px) ' +
'rotateX(' + rotationX + 'deg) ');
By the way, you don't need your rotateY(0deg)
updated demo

How to fix bottom of layout of 100% height (jQuery Mobile and Google Map)?

I have a layout where I would like the main content area to be 100% height of the remaining space. So I am almost there but the bottom is truncated (which effects zoom and centering). There is 41px from the bottom that is being truncated, which is the measurement of the header area: http://jsfiddle.net/GTscW/
The reason why I know if it cut off is because I do not see the Google map copyright info. Here is the not truncated, but truncates the top (I just removed the top: 41px from #content .inner-content): http://jsfiddle.net/GTscW/1/
How do I subtract 41px from the bottom from the first sample to get the content 100% of the remaining area?
EDIT:
I was able to add just this: $('#content .inner-content').height($(this).height() - $('#header').height()), but really no CSS solution though???
One issue is that it's not easy to mix percentages and pixel measurements, because different screen sizes will behave differently. But it is possible to use API features to get the map to behave the way you want it to, on any size screen.
Make the map 100% of the screen size, so the header obscures part of the map. Suppress the default map controls so they do not appear partially obscured. Create an empty custom control the same size as the header and position it at the top of the map. When the map controls are added back, the custom control pushes them out of their usual place so they look right on the visible map.
var posn=google.maps.ControlPosition; // shorten the reference
// Add empty custom control
var controlDiv = document.createElement('div');
controlDiv.style.width='100%';
controlDiv.style.height='41px';
map.controls[posn.TOP_LEFT].push(controlDiv);
map.controls[posn.TOP_RIGHT].push(controlDiv);
// Add map controls
map.setOptions({
mapTypeControlOptions:{position:posn.RIGHT_TOP},
mapTypeControl:true,
panControlOptions:{position:posn.LEFT_TOP},
panControl:true,
streetViewControlOptions:{position:posn.LEFT_TOP},
streetViewControl:true,
zoomControlOptions:{position:posn.LEFT_TOP},
zoomControl:true
})
http://jsfiddle.net/GTscW/4/
Note 1: Because the map is actually 41px larger than it looks (in your case), the centre-point will be 20px higher than the centre of the viewable map. This may not be worth worrying about. If it is, then dealing with an apparent centre-point is the subject of another question on SO.
Note 2: This method won't work to get a fixed footer, because the Google logo and Terms links are always at the bottom of the map and [currently] don't move to avoid a control.
I edited your fiddle with a solution: http://jsfiddle.net/T2Nkk/
Basically, create a function that looks something like this:
function remainder() {
$("*[height=\"remainder\"]").each(function(index, element) {
var offsetParent;
var target = $(element);
if (element==$("body")[0]) {
offsetParent = $("html");
}
else {
offsetParent = target.offsetParent();
}
var position = target.position();
var heightParent = offsetParent.height();
var extras = target.outerHeight(true)-target.height();
var remainderHeight = heightParent-position.top;
target.height(remainderHeight-extras);
});
}
For the element that you want to occupy the remainder of the page, do this:
<div id="content" data-role="content" height="remainder">
Finally, when your document is ready:
$(document).ready(function() {
remainder();
});
In css only you can try to use a trick : use both top and bottom attributes on position: absolute property like I did on your fiddle : http://jsfiddle.net/GTscW/23/
Don't know if it works everywhere though.

CSS: overflow-y: scroll; overflow-x: visible

See the following post for a picture highlighting my question and a potential solution:
CSS overflow-y:visible, overflow-x:scroll
However, this strategy breaks when you actually move the scrollbar. In the suggested implementation (position: fixed;), the tooltips display next to child div in its position pre-scroll. So, as you scroll new child-divs into view, the tooltips begin falling off the bottom of the page.
See here for a demo of the bug: http://jsfiddle.net/narcV/4/
Any ideas how I can make the tooltips display next to the child div at all times?
I ended up implementing this using javascript, using the getPos function from this question.
The end product looks like:
var scrollPanel = ...;
var tooltip = ...;
function nodeHovered(e) {
var hovered = e.srcElement;
var pos = getPos(hovered);
pos.x += hovered.offsetWidth;
pos.y -= scrollPanel.scrollTop;
tooltip.style.setProperty('left', pos.x);
tooltip.style.setProperty('top', pos.y);
}
Basically, I calculate where on the page the node is currently displayed (taking into account the scrollbar position), and manually place the tooltip in the right spot on the page.
Too bad there's no elegant/CSS way to do this, but at least this works.

is it even possible to expand a (horizontal) list's background with ajax?

I've got a list with list-style-none which needs to be able to add new items to itself via Ajax and have the background expand appropriately when it does. Adding via Ajax is easy, but every solution I try for the background fails me. I don't know if it's even possible; is it? I'm using a grid like this one:
http://jqueryui.com/demos/sortable/#display-grid
Both WebKit and Firebug are showing me skinny, empty bars when I hover over the enclosing divs and/or the enclosing ul tag. It appears that the minute you set a list loose with list-style-none and float:wherever, you give up control over its background. But that can't be right.
This is something I've run into a number of times. The problem is that floated elements aren't part of the normal box model, so they don't cause their parent elements to expand unless their parent elements are also floated. So if possible, float the ul or containing div.
Edit:
See quirksmode for another css-only workaround.
Could you provide a sample of your code? Also, why does the list have display:none set?
For instance, should be as simple as this:
HTML:
<ul id="dest"></ul>
JS:
// Simplified example, most likely wrapped in $.ajax
// This is the AJAX response function
function(data, response) {
var items = json.parse(data);
$.each(items, function() {
// Assumes item has a name property
$('#dest').append($('<li>' + this.name + '</li>'));
});
}
Should be just that simple. You shouldn't need the hide the list initially, as you can simply append list items and have the display update appropriately.
Hope that helps.
You need to explicitly set the width and height for the area.
Check out this link for Horizontal Scrolling: http://valums.com/scroll-menu-jquery/
Here is the script:
$(function(){
//Get our elements for faster access and set overlay width
var div = $('div.sc_menu'),
ul = $('ul.sc_menu'),
// unordered list's left margin
ulPadding = 15;
//Get menu width
var divWidth = div.width();
//Remove scrollbars
div.css({overflow: 'hidden'});
//Find last image container
var lastLi = ul.find('li:last-child');
//When user move mouse over menu
div.mousemove(function(e){
//As images are loaded ul width increases,
//so we recalculate it each time
var ulWidth = lastLi[0].offsetLeft + lastLi.outerWidth() + ulPadding;
var left = (e.pageX - div.offset().left) * (ulWidth-divWidth) / divWidth;
div.scrollLeft(left);
});
});
Basically, you need to update the ulWidth and divWidth when you add the new item.
Then just set the background image to repeat horizontally and you should be set.
ul.sc_menu {background:transparent url(image.png) repeat scroll 0 0;height:100px}
Note: You will need to set the height; otherwise you will not see the background because the li are floated.
For dealing with the float element, maybe you should know it's characteristic, gotcha, and how to deal with it.
See the links below, it also have demo, so you can understand the concept:
http://www.smashingmagazine.com/2009/10/19/the-mystery-of-css-float-property/
http://www.smashingmagazine.com/2007/05/01/css-float-theory-things-you-should-know/
http://aloestudios.com/2009/12/goodbye-overflow-clearing-hack/
and
http://aloestudios.com/misc/overflow/

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