Question

CSS overflow on both sides..

Asked by: Tricky1974

Hello!

Sorry about the vagueness in the question title.
Basically, I have a div that has it's width set as a percentage.  Inside the div is an image (obviously with it's size in pixels.

What i'd like to happen is:
1) When the containing div is large enough to fit the image in, the image will float in the middle  (which I think the text-align: center did  actually sort out.

2)  If the containing div is too small, i'd like the image's two sides to be hidden in equal amounts.  (Using overflow: hidden only overlaps one side of the image)

I've a rough example of the code i'm working with below.

Thank you.

<style type="text/css">
div.pictureContainer {
     text-align: center;
     overflow: hidden;
     width: 50%;
}
 
div.pictureContainer img
{
     width: 100px;
     height: 100px;
}
</style>
 
<div class="pictureContainer">
<img src="picture.jpg" alt="picture" />
</div>

                                  
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Asked On
2009-08-19 at 07:14:18ID24664859
Topics

Cascading Style Sheets (CSS)

,

Hypertext Markup Language (HTML)

,

Miscellaneous Web Development

Participating Experts
3
Points
500
Comments
17

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Answers

 

by: lharrispvPosted on 2009-08-19 at 07:19:49ID: 25132928

div.pictureContainer {
     text-align: center;
     margin:0 auto;
     overflow: hidden;
     width: 50%;
}

This should center the image.  If it is properly centered then you should get the effect you are look for

 

by: Tricky1974Posted on 2009-08-19 at 07:29:08ID: 25133054

Hello,

Thanks for the reply.

Adding the margin: 0 auto; didn't work.  Do you have any other ideas?

 

by: lharrispvPosted on 2009-08-19 at 07:34:42ID: 25133132

give me a live example so I can see what is actually happening please?

 

by: Tricky1974Posted on 2009-08-19 at 07:51:42ID: 25133348

It's not actually live on the web at the moment as i'm running it on localhost.  I'll attach an image of what it's doing and what i'd like it to be doing.

The yellow parts of the image are the overflowed parts of the image.

 

by: eejonesPosted on 2009-08-19 at 07:53:09ID: 25133368

<div
style="overflow: hidden;
      width: 50%;
      border:solid 1px red;
      margin:0px auto 0px auto;
      text-align:center;
      overflow:hidden;">
    <img src="screenshot3.png" width="1000" alt="picture" />
    </div>

 

by: Tricky1974Posted on 2009-08-19 at 08:00:29ID: 25133475

Thanks for the reply eejones, but I can't get it to work using your method.  

Did you see the image I posted above?  Maybe that'll make it clearer what i'm looking to achieve, because it's quite difficult to explain.

 

by: eejonesPosted on 2009-08-19 at 08:04:05ID: 25133519

I see what you want now (from your illustration).

Is it acceptable to absolutely position the pictureContainer div? If so there might be a solution.

 

by: Tricky1974Posted on 2009-08-19 at 08:06:47ID: 25133555

Annoyoingly, absolutely positioning the container is a no go, as it's floating next to another container to the left of it.

 

by: eejonesPosted on 2009-08-19 at 08:15:09ID: 25133673

This is funky but it works. I hope it turns out there is a more elegant solution than using JavaScript which you could active in an onLoad() even in the body tag, or just inline.    

<div id="picContainer" name="picContainer"
style="overflow: visible; text-align:center;
      width:25%;
      border:solid 1px red;
      margin:0px auto 0px auto;
      overflow:hidden;">
    <img src="screenshot3.png" id="picture" width="1280" height="821"/>
    </div>
    <input type="button" value="center the picture in the div" onClick="
      n=document.getElementById('picContainer').offsetWidth;
      m=document.getElementById('picture').offsetWidth;
    if (m > n) {
    x=(m-2)/2 * -1; x = x + 'px';
    document.getElementById('picture').style.marginLeft=x;
    }" />

 

by: eejonesPosted on 2009-08-19 at 08:17:28ID: 25133704

oops there was a typo in that, here is the real deal:

<div id="picContainer" name="picContainer"
style="overflow: visible; text-align:center;
      width:25%;
      border:solid 1px red;
      margin:0px auto 0px auto;
      
      overflow:hidden;">
    <img src="screenshot3.png" id="picture" width="1280" height="821"/>
    </div>
    <input type="button" value="center the picture in the div" onClick="
      n=document.getElementById('picContainer').offsetWidth;
      m=document.getElementById('picture').offsetWidth;
    if (m > n) {
    x=(m-n)/2 * -1; x = x + 'px'; alert(m + ' ' + n + ' ' + x);
    document.getElementById('picture').style.marginLeft=x;
    }" />

 

by: Tricky1974Posted on 2009-08-19 at 08:21:54ID: 25133773

Ah hah!  That's a nice way of doing it, but it doesn't work as you resize the browser window, which i'd really like it to do.  

When you click the button to center it, it's perfect, but then when you resize the window, it's no longer centered.

Is there anyway to get it to refresh automatically as the window is resized?

 

by: eejonesPosted on 2009-08-19 at 09:20:30ID: 25134429

There is a JavaScript onresize() event and you could call the function again.

 

by: flob9Posted on 2009-08-19 at 09:21:08ID: 25134436

try this :

<html>
<head>
<style type="text/css">
div.pictureContainer {
	text-align: center;
	overflow: hidden;
	width: 50%;
	border:1px solid red;
}
 
div.pictureContainer #myimage {
	background: url(test.png) no-repeat center center; /* replace your image url here */
	width:100%;
	height:100%;
	background-position:center;
}
</style>
</head>
<body>
<div class="pictureContainer">
<div id="myimage"></div>
</div>
</body>
</html>

                                              
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by: flob9Posted on 2009-08-19 at 09:22:40ID: 25134453

sorry, you can remove line 15 in the css (already defined in line 12)

 

by: eejonesPosted on 2009-08-19 at 09:29:59ID: 25134533

flob9 solutions works great. In Chrome the div is collapsed unless you also put an image inside the div (not just the background image). You could put a transparent image the exact height and width of your container div inside it.

 

by: eejonesPosted on 2009-08-19 at 09:31:52ID: 25134557

Like this:
<div id="myimage"><img src="transparent.png" width="50%" height="25%"/></div>

I do not mean to horn in on his cool solution - just happened to notice this in Chrome which behaves much like Safari.

 

by: flob9Posted on 2009-08-19 at 09:45:40ID: 25134701

no need to add an image to get transparent div ..

div.pictureContainer #myimage {
      background: transparent url(test.png) no-repeat center center; /* transparent bg, centered verticaly and horizontaly*/
      width:100%;
      height:100%;
}

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