Image max-height - javascript

I have got a tiny problem, im creating a website and i want to give an image a max-height. The image may only have the same height of another div.
You can check the layout here: http://bit.ly/1OAGsLR
Its about the 1920x1080 image, and i needs to be the same height as the div with class box left to it. If right the image should scale well.
But im trying all i know but i dont get it working, can someone get this working with CSS or do i need to use Javascript for this?
Thanks in advance!

Your image is looking the way you want when the screen width is at or above 1400px. You should consider using css media queries to move or adjust the image at different screen widths. Your layout could easily be handled using a css framework like foundation or bootstrap which would take care of css media query breakpoints for you.
If you are intentionally trying to not use a css framework, I'd check out this css media queries tutorial to get you started.

You need to make your container div wider.
Your container is 1200px wide, and your boxes are 560 + 40 padding wide each.
That means that the max width of you image is 560px.
Now to conserve it's aspect ratio of 16:9, the max height of the image is 560 / 16 * 9 = 315 pixels.

Okay, your main problem is that heights don't like to be defined this way. I have a solution for you that will 'solve' this issue, but its not very pretty and you might want to look into doing this with javascript anyhow. Below is a very rough example mockup.
body > div {
width: 100%;
max-width: 500px;
background: green;
padding: 10px;
position: relative;
}
body > div > div {
width: 50%;
padding: 20px;
}
body > div > img {
position: absolute;
right: 20px;
top: 20px;
max-width: 50%;
/* make sure to fall back to 80% so theres at least some gutter for older browsers */
max-height: 80%;
/* use calc to make the image the height of the relative parent minus padding */
max-height: calc(100% - 40px);
}
<div>
<div>Push<br />Push<br />Push<br />Push<br />Push<br /></div>
<img src="http://placehold.it/350x150" />
</div>
In short, this will place your image to the right of your box, give it a max-height (because positioning can do that) and a max-width (so smaller screen sizes don't freak out).
Now you could easily translate this a more general system where .box + .boxget a absolute position, or you could define a class for the box that has to push content and add that to the first box, making all other boxes absolute.

I fixed it by using JS, im using the following script:
<script type="text/javascript">
function changeheight(){
var Height = document.getElementById('box').clientHeight;
document.getElementById('imagebox').style.height = Height+'px';
}
</script>

Related

Set width of a div in respect to height

I have a div #slideshow with images of 2:1 aspect ratio. So, set height of image I am using jQuery:
Note: The Slideshow Div is 100% wide with respect to browser window. If user makes the browser window, smaller - it is going to be smaller.
slideWidth();
function slideWidth(){
var width = $("#slideshow").css("width");
var height = (parseInt(width.substr(0,width.length-2)) /3);
$("#slideshow").css("height",height+"px");
}
And, to make the width change dynamically, I use setTimeout:
setInterval(slideWidth,1000);
This is actually working as I want. But I think I am heavily giving high impact on the website by refreshing the function slidewidth every second.
Is this achievable through CSS3? Or with jQuery/JS with less Website Impact?
Thank you. Feel free to comment with new ways/ideas.
There's a css-only approach using pseudo elements and padding:
div {
width: 100%;
position: relative;
background: red;
}
div:before {
display: block;
content: "";
padding-top: 50%;
}
The combination of the pseudo padding-top can be used to vary between aspect ratios.
In this case, the 50% padding is equivalent to aspect ratio of 2:1
Working Fiddle Example
You should be using jquerys .resize(); This adds an event listener waiting for the container to resize.
Ej:
$(window).resize(function(){
//do your logic here
});
Jquery resize

How to apply a responsive CSS height to an element using min/max-height and height?

I'm trying to expand a Dygraph to the maximum available dimensions of it's parent container.
Technically the graph is resizeable, either by using a re-rendering method or by specifying an absolute container like in this example.
Problem is, the plugin expects hardcoded values, otherwise it will calculate something arbitrary - see this link for explanation, which says:
// For historical reasons, the 'width' and 'height' options trump all CSS
// rules _except_ for an explicit 'width' or 'height' on the div.
// As an added convenience, if the div has zero height (like <div></div> does
// without any styles), then we use a default height/width.
I have been playing around with the following setup:
<div class="graph_wrap">
<div class="graph_container">
<!-- graph will be here -->
</div>
</div>
I managed to stretch the graph WIDTH to 100% by setting this CSS:
html .ui-graph {
width: 100%;
min-width: 1px;
}
but without specifying a height, the plugin overrides my CSS and doing this:
html .ui-graph {
width: 100%;
min-width: 1px;
/* height... */
height: auto;
max-height: 100%;
min-height: 100%;
}
does not work. Only if I add something like height: 20em, the plugin does not overwrite my set CSS.
Question:
Is there any CSS way using min/max-height/height (or other) to force the browser to expand to maximum height? Can't think of anything else.
does
There is no way to force the browser to maximum height. You can write css like
.max_width{
width: 100%;
}
this will make the container 100%.
But the height will be determined by the height of the elements inside.
This can be solved using javascript though.
You can do it multiple ways:
The way It looks like you are doing is having the graph stretch with the browser window.
height: 10vw; /* viewport width */
or
height: 10vh; /* viewport height*/
these are different, so experiment what you want. This will definitely resize it.
In the resize-to-browser example you provided, the element is scaling to the parent container just as you wanted. You can then apply your sizing rules to the container (#div_g), not the graph itself.
In that example, adding this will make the graph scale with the browser height until it is 300px tall:
#div_g {
max-height: 300px;
}
All of the graph generated elements are calculated with JavaScript. That's why CSS doesn't work for them. So style the container, and let the graph itself resize it to fill that container.
You should be able to use position: relative; instead of absolute, if you want your graph to be positioned with other elements.
"Is there any CSS way using min/max-height/height (or other) to force the browser to expand to maximum height? Can't think of anything else. does"
Traditionally the height of the html document is the same height as what it contains, like any other block element. You can stretch this to fit the browser height using the following:
html, body {
height: 100%;
margin: 0;
}

How to position the element using absolute position?

I am trying to create a responsive design for my app.
I have a big background image and it will show the full size when user has large screen and only show partial if user uses small screen.
I want to place few elements on my app with absolute position but the problem is I can't lock their top and left value because the screen size changes.
I have something like
css
#background{
background: url('BG.jpg') no-repeat top center fixed;
width: 1900px;
height: 1200px;
}
#element{
position: fixed;
z-index: 5;
top: 50%; //looks fine in 1900 x 1200 screen but position is off on 1200 x 1000
left:70%; //looks fine in 1900 x 1200 screen but position is off on 1200 x 1000
}
html
<div id='background'></div>
<img id='element' src='test.jpg' />
How do I keep the position of the element on the same spot when user has small screen? Thanks for the help!
When using position: absolute, you need to make sure that it has a parent with a position attribute other than the default (which is static). If there is no such parent, the document is the effective parent. For your example, I would advise making the img#element a child of div#background like so
<div id='background'>
<img id='element' src='test.jpg' />
</div>
and then adding position:relative; to the #background css style
#background{
background: url('BG.jpg') no-repeat top center fixed;
width: 1900px;
height: 1200px;
position: relative;
}
The reason relative is used, is because it doesn't take the element out of the document flow (like fixed or absolute would) and as long as you don't specify a top, left, 'bottom', or right attribute to the parent (#background in the case), it will stay in the same location as it would with default positioning.
Edit:
I don't think this will work out of the box for you. You need to figure out how to make the image's width dynamic as well. You can either give it a % based width or use media queries.
Edit 2:
Ia also just noticed you have position:fixed for img#element. Change that to position:absolute. that will make it so that it is positioned relative to the position:relative parent rather than the window.
Consider making a javascript function that calculates the screen width. After that add margin-left to #background equal to ( screen width / -2 ). Make #background width & height - 100%

Have Image take up as much of window as possible, without exceeding borders

Now the title of the question may have been worded the wrong way.
I want the image to take up 100% of the width or heigh (I guess whichever is larger). Kind of like when you have a photoviewer and there make be a black border on the sides or the top, depending which way it is.
Obviously if it's a very small image I don't want it to stretch, I never want any of the images to stretch, I just want them to fill as much of the window out as they can.
For example, when you load an image on Google, it doesn't show it's fullest resolution. It shrinks it down to fit within the borders of the page if it is to big. Then you can click on it to zoom in if you want.
How would I accomplish this? Thanks.
I think you would actually need the following:
.container img {
max-width: 100%;
max-height: 100%;
width: auto;
height: auto;
}
This requires a container with an explicit height set to work.
Example:
http://jsfiddle.net/AtxYb/4/
This is pretty easy to accomplish with CSS alone:
.container img {
max-width: 100%;
height: auto;
}
The max-width ensures that it never exceeds 100% of the width of its container. height tells the browser to size the image normally (eg. it's not going to stretch it width-wise, but not height-wise) and is included for older browsers.
You can of course also reverse this if you wish to match a container's height instead of width.
edit:
As pburgess suggests, if you wish your image to match either width or height, you need to declare both. See this jsfiddle: http://jsfiddle.net/XxgkG/
.container img {
max-width: 100%;
max-height: 100%;
width: auto;
height: auto;
}
Note this will not work in IE6 and is shaky in IE7. If you're coding for these sad, lonely browsers you should check out this answer.
Demo Fiddle
img{height:auto;width:100%;}
Try re-sizing the window - The image will take up the maximum space .

How to keep text over a huge image in proper position on all resolutions?

In my intro page I have a really big image in height and width to fit all the resolutions (more than 4000px in width) and I set it as below:
#source-image {
width: 100%;
position: absolute;
top: 0;
left: 0;
}
Then, I added some text over that image with these style properties:
.description {
position:absolute;
top:510px;
left:23px;
width:340px
}
And it looks properly (and as I want it to be shown) on my 15.6 inch laptop with 1366x768 resolution.
However when my roommate saw it on his high resolution monitor the description was not on the “right” position. Of course, I understand why this is happening.
My question is how can I keep dynamically the proper position of the description text in all resolutions?
Thank you very much.
Set the distance from the bottom, not from the top. Or set it in %.
EDIT: I've adapted one of my experiments into an example: http://dabblet.com/gist/2787061
The position of the description is set relative to the bottom and the left of the image container (the image is filling its entire container).
In the first case, the distances to the left and the bottom of the image container are fixed, in px.
In the second case, they are in % and change on resizing the browser window.
Basically, the rules that do the trick are
figcaption {
bottom: 5px;
left: 23px;
/* more rules here */
}
in the fist case (fixed distances, in px) and
figcaption.perc {
left: 10%;
bottom: 17%;
}
in the second case (percentage).
Also, please note that you don't need position: absolute or to set the top and the left properties for the image.
However, you do need to set position:relative on the parent of the description box.
For the image to fill the screen horizontally, you need to have margin:0; and padding:0; on the body element and width: 100%; and margin: 0; on the figure element. I've edited my example to reflect these changes http://dabblet.com/gist/2787061
For the image to fill the screen both horizontally and vertically, the easiest way is to not even use an img tag, but simply set the image as a background image for the body and set the height for both the html and the body elements to 100% - example http://dabblet.com/gist/2792929
Be careful for two reasons: one, this will really distort the image and can make it look ugly when resizing the browser window and two, if you need some content below the image you will need to give the the outer element position: absolute and set its top: 100%. Both these two aspects can be seen in the example I've linked to. You can simply remove the content below the image if you don't need it.
use position:relative; for the div that wraps the image, and position:absolute; for the text div
please set percentage
check the example- description box set in horizontal center,
first set position relative into wraper div
.description {
position:absolute;
top:510px;
left:50%;
width:340px;
margin:0 0 0 -170px
}

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