ok there are several similar questions but not quite anything that I want.
I have few ajax requests on page and I want to show the image in the center of the screen, and its all working OK.
Just to make it look more prominent, I wanted to place that image on a div with translucent background, so its more obvious for the end users. Now comes the tricky part.
I made the div with css like this:
.divLoadingBackground
{
filter: Alpha(Opacity=40); -moz-opacity:0.4; opacity: 0.4;
width: 100%;
height: 100%;
background-color: #333;
position: fixed;
top: 0px;
left: 0px;
}
This fills the page up alright, or, I should say, this fills the viewport. If I scroll the page down, the page is again normal. I want this div to span the ENTIRE LENGTH of the page, no matter how long the page is.
Here is an example mockup of the problem I made to quickly demonstrate:
As you can see, I took the example of SO for the mockup ;) image 1 shows that its okay when it appears. image 2 shows that it goes up with the page on scroll.
I'm a c# developer and css is as alien to me as ancient latin.
How to make this divLoadingBackground div to fill out the entire length of the page?
Many thanks for any help.
If you need any additional info, please comment!
One thing I dont see in your css is z-index. Fixed, although, fixes this problem, sometimes, based on how other divs are positioned, your divLoadingBackground div could end up in one of the divs.
try adding
z-index: 9999;
or something similar and see if it works.
Would have put this in a comment, but it seems I have too low rep to comment.
Where is the .divLoadingBackground div located in the DOM tree? Since it has fixed position, it shouldn't scroll with the page. This makes me belive that the element is too deeply nested. Try putting it right in the body level of the page and see if that helps.
Also, are you sure that some other css directive isn't changing the position attribute to absolute or something?
Also, make sure to use the right DOCTYPE. That has some impact on fixed position elements.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
Oh, and ofcourse, fixed position isn't supported in IE6 and below.
I believe you will need JavaScript/jQuery to dynamically set the height of the div in question to the height of the page once rendered.
And if you're entering the world of web, it's time to learn that new language "CSS" as well as perpahs-not-quite-as-daunting JavaScript.
When I needed such a functionality some years ago, I examined how Google Calendar did it.
Basically, they use a timer-driven JavaScript file that checks for the height of the window and adjust the height of a contained DIV tag accordingly (or of an IFRAME tag, just any container tag that you like).
Here is a code snippet from a page I worked on:
<script type="text/javascript">
document.getElementsByTagName("body")[0].style.height = "100%";
document.getElementsByTagName("html")[0].style.height = "100%";
document.getElementsByTagName("body")[0].style.minHeight = "100%";
document.getElementsByTagName("html")[0].style.minHeight = "100%";
function height()
{
try
{
height_iframe();
}
catch(err)
{
}
}
window.onload=height;
// --
var ie6WorkaroundIFrameResize = 1;
function height_iframe()
{
var any = false;
var offset = 300;
var c = document.getElementById("iframecontent");
if ( c!=null )
{
c.style.height = (GetClientHeight()-offset)+"px";
any = true;
var d = document.getElementById("iframeie6");
if ( d!=null )
{
d.style.height = (GetClientHeight()-(offset+ie6WorkaroundIFrameResize))+"px";
any = true;
ie6WorkaroundIFrameResize = 0;
}
}
if ( any )
{
setTimeout( 'height_iframe()', 300 );
}
}
function GetClientHeight()
{
return document.documentElement.clientHeight;
}
</script>
Basically, the script regularly checks for the height of the window via the GetClientHeight() function and adjusts the element in concern ("iframecontent") accordingly.
I subtract some offsets of fixed-height headers and footers.
AFAIK you would need to set the size of this divthrough javascript. I would recommend using jQuery, in this way :
//$(document).height() gives the size of the document
//(as opposed to $(window).height() that would give the size of the viewport
$("div#overlay").css('height',$(document).height());
Related
I am using Angular 1.3 and Bootstrap 3.2. I want to create a single webpage that does exactly this: http://lewisking.net. i.e. I want to be able to have vertically stacked divs that are the height of the viewport. I'm thinking of making a directive that watches the browser height/width and updates the style accordingly.
Any other ideas? Any tips for implementing with a directive?
This is the perfect use case for vh and vw.
Simply set:
.wrapper {
width: 100vw;
height: 100vh;
}
And it will work out the box. If you have to support any old browsers you can easily do a quick JS fall back.
CSS will get you part of the way, but you will need JS to update your 100% height on resize
and scrollTop points etc. And you will also need a way to animate the scroll anyway. This isn't exactly what I would do but it explains the basic idea.
$($window).on('resize', function() {
$scope.winWidth = $(window).width();
$scope.winHeight = $(window).height();
});
...
$scope.getSectionStyle = function(){
return {width:$scope.winWidth, height:$scope.winHeight} ;
}
...
<section id="sectionId" ng-style="getSectionStyle()"
To animate the scroll I just use jQuery like. If you're a angular purist there is $achorScoll but it has no animating at this point so you need to do some extra factory or directive like https://github.com/durated/angular-scroll/
$rootScope.scrollTo = function(_to){
$("html, body").delay(300).animate({scrollTop:_to},{ easing: "easeOutExpo"}, 2000);
}
To get _to you just find the elements offset().top something like :
var offset = $('#sectionId').offset();
$rootScope.scrollTo(offset.top);
I'm having some issues with scrollbars on element with position: absolute. The behavior I'm experiencing is that chrome 21 and firefox 15 displays scrollbars inside the box, resizing it's content thus hiding some of the text, however opera 12 and internet explorer 9 displays it also on the inside, but without resizing it's content and resizing the box instead (which is in my opinion correct, since the box doesn't have width defined). Is there any solution to make this look the same in those 4 browsers?
JsFiddle: http://jsfiddle.net/Kukkimonsuta/GaMD7/2/
Edit: as Siva Charan pointed out, it works correctly when overflow-y is set to "scroll" however that shows scrollbar always which is not desired
Edit: my final solution based on answers from Siva Charan and anonymous down voting is lame
http://jsfiddle.net/Kukkimonsuta/GaMD7/15/
function updateAutoScroll(element) {
var $element = $(element);
if (element.scrollHeight > element.clientHeight)
$element.css("overflow-y", "scroll");
else
$element.css("overflow-y", "auto");
}
The only way to do this dynamically across all browsers is with JavaScript, for simplicity I used jQuery.
http://jsfiddle.net/iambriansreed/mYuQx/
$(function(){
// loops through each container
$('.container').each(function(){
if(this.scrollHeight>this.clientHeight)
$(this).children().wrapAll(
'<div style="padding-right:'+scrollbarWidth()+'px;"/>'
);
});
// gets the browsers current scrollbar width
function scrollbarWidth() {
var parent, child, width;
if(width===undefined) {
parent = $('<div style="width:50px;height:50px;overflow:auto"><div/></div>').appendTo('body');
child = parent.children();
width = child.innerWidth() -
child.height(99).innerWidth();
parent.remove();
}
return width;
};
});
Add overflow-y: scroll; to .container.two
.container.two {
top: 250px;
overflow-y: scroll;
}
Refer LIVE DEMO
UPDATE:
If you are comfortable, you can use text-overflow: ellipsis; and replace to actual space
This is more of a workaround than an actual solution, but it might be good enough. Basically, first wrap the contents of container two in another div, and add some right padding to it. Make sure you also set width: 100% in .item.
Here's a modified version of your demo: little link.
This isn't perfect, but I hope it helped!
I have a side bar that contains two divs. The first div may or may not have content, depending on what else is done on the page. The second div contains a long list of things and has a limited height, so scrolling is possible. I want to have the sidebar be as tall as the page, and I want the list container in the sidebar to be as tall as the sidebar minus the height of the header (which will change while using the page). I don't care about limiting the size of the header. The biggest is will get isn't anything significant.
Right now I'm just setting the height of the list container to be some number that is won't go over a maximized window height if the header div as as much content as it can, but this leaves an empty space at the bottom when the header is empty, and still doesn't work very well if the window is resized.
The layout is similar to this.
Is there a css solution to what I'm looking for, or will I have to use javascript and get window height/set div heights in pixels? I'm fine with either, it just seemed like there should be a CSS way to accomplish it.
If you're not opposed to using a little jQuery, here's a little code snippet that should help you equalize the height of the two divs, no matter which has more content. You can change it to your liking too.
var leftHeight = $(".left").height();
var rightHeight = $(".right").height();
var maxHeight = 0;
var div = "";
if (leftHeight >= rightHeight)
{
maxHeight = leftHeight;
div = ".right";
}
else
{
maxHeight = rightHeight;
div = ".left";
}
$(div).each(function(){
if ($(this).height() > maxHeight) { maxHeight = $(this).height(); }
});
$(div).height(maxHeight);
and credit where credit is due, this is an edit of a code snipped found at css-tricks.com
is this what you want?
http://jsfiddle.net/YWNyr/
CSS tips:
If you use 'absolute' positioning, width,height,left,top, etc... is relative to the first ancestor that has a "position" property other than "static", or the body if nothing is there.
for static menus, it is common to use 'position:fixed' as it will simplify scrolling issues
When using jquery its easier(and faster) to toggle a class than to change the DOM since that requires redrawing of the elements by the browser
-edit: for refreshing the sidebar size some javascript is necessary:
$('#headerAdd , #headerRemove').click( function()
{$('#sideContainer').height($(window).height()-$("#header").height());
} );
Try setting the height of your list container to 100%, and your overflow to scroll:
#listContainer {
height: 100%;
overflow: scroll;
}
This will keep the list in a scrollpane that reaches to the bottom of the page, no matter how large the header grows or shrinks.
How can I get a DIV to float with my page? Currently I have it setup like this: http://g2n.us/Dev/TheHabbos_6975/
I can do this by using the following CSS:
Code:
.stayStill {
position: fixed;
width: 300px;
}
But how can I get it so when the header scrolls away, the right DIV moves up and stays 10 pixels away from the top and scrolls with the page, unless the header is there?
You need JavaScript to do this.
Your site is already using it, so there should be no problem with using JavaScript to do this.
A couple of tutorials:
http://jqueryfordesigners.com/fixed-floating-elements/
http://css-tricks.com/scrollfollow-sidebar/
This answer uses jQuery
You can put this in your $.ready() function
var int_header_height = 10; //put pixel value height of header here
if ($(document).scrollTop() <= int_header_height) {
$('div.stayStill').css('position','absolute').css('top','0px');
} else {
$('div.stayStill').css('position','fixed').css('top','10px');
}
This also assumes that the div is in a position: relative element below the header. Otherwise you should change the .css('top','0px') to .css('top',int_header_height + 'px')
How can I load images to cover the whole background like some websites, using CSS. Not the usual background-image property but I want to load the images quickly.
Examples:
http://www.marinayachting.it/
http://alexandraowen.co.nz/
background-image is the only way to place images in CSS. If you want it to be vary large put it on the body element or a container div that fills the entire viewport.
body {
margin: 0;
padding: 0;
width: 100%;
background-image: url('my_big_image.jpg') norepeat;
}
If you use a container div you can set position:fixed; top:0; left:0 and the image will remain stationary when the page scrolls.
There's no magic to it. As far as getting it to load quickly I don't think there's much you can do if it doesn't repeat. If it does repeat then make sure your image is the size of one module. This can be as little as one pixel tall or wide depending on the content.
There is no magic to making a background image load quickly, you just:
Have a fast server.
Compress the image as much as possible.
Make your page HTML small so that the rest can start loading as soon as possible.
Don't have many other images that also has to load.
Don't have a lot of scripts and other external files that has to load.
I found this tutorial helpful. ->
http://css-tricks.com/perfect-full-page-background-image/
Bing is loading a normal background image with a fixed size. It´s not particularly fast (for me...), but perhaps it seems fast because the image is cached after the first time you load it.
You can set the style inline so that the image can start downloading without waiting for any css file to be ready.
If you set an image let's say a picture as a background you need to make it large enough to accommodate large screen sizes. You don't want the experience on your site to be, that your picture repeats multiple times on the screen. Probably at the least width should be 1260px. If background is just a simple gradient, you can cut a small part of it in photoshop and apply it on the body like this:
body {
margin:0;
padding:0;
background:#fff url(your/image/location.jpg) repeat-x scroll 0 0;
}
This method could be applied to divs too, Good luck.
In your second example site, alexandraowen.co.nz, if you took a second to look at the JS they use, you would have seen the following:
// backgrounds --------------------------------------------------------------//
var Backgrounds = {};
Backgrounds.init = function()
{
$('body').each
(
function()
{
var imgsrc = $(this).css('background-image');
if(imgsrc != 'none')
{
imgsrc = imgsrc.slice( imgsrc.indexOf('(') + 1 , -1);
$(this).css('background-image', 'none');
$(this).prepend('');
if($.browser.msie)
{
// ie 7 is the slow kid and we have to strip out quote marks ffs!
$(this).find('div.bg img').attr('src', imgsrc.split('"').join(''));
}
else
{
$(this).find('div.bg img').attr('src', imgsrc);
}
}
}
);
Backgrounds.resizeHandler();
$(window).resize(Backgrounds.resizeHandler);
$('div.bg img').load(Backgrounds.resizeHandler);
}
Backgrounds.resizeHandler = function()
{
var w = $(window).width();
var h = $(window).height();
$('div.bg img').each
(
function()
{
var wr = w / $(this).width();
var hr = h / $(this).height();
var r = Math.max(wr, hr);
var imgw = Math.round($(this).width() * r);
var imgh = Math.round($(this).height() * r);
$(this).width( imgw );
$(this).height( imgh );
var l = Math.round((w/2) - (imgw/2));
$(this).css('margin-left', l+'px');
}
);
}
As well as the HTML on the page:
<body style="background-image: none; ">
If you dig into their scripts a bit more, you can see what they did. But I guarantee you it's nothing faster than just setting the background-image property.
<img id="foo" src="bar" alt=""> with #foo { width: 100%; height: 100%; }(use position: absolute; / position: relative; & z-index for layering as desired)
Here's an old example.