Solved

scaling images

Posted on 2011-09-23
7
278 Views
Last Modified: 2012-05-12
Can jQuery scale in image to size of the containing div?
0
Comment
Question by:Tom Knowlton
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
7 Comments
 
LVL 31

Assisted Solution

by:Frosty555
Frosty555 earned 250 total points
ID: 36590088
If your image is in an IMG tag you can set the width and height of the img to the width and height of your DIV. You'd use the jquery "width()" and "height()" functions:

http://api.jquery.com/width/
http://api.jquery.com/height/
0
 
LVL 56

Expert Comment

by:HainKurt
ID: 36590207
no need for jQuery


<img src="http://indianahumanities.net/wp-content/uploads/2011/08/cat2.jpg">

<div style="width:300;height:200">
<img src="http://indianahumanities.net/wp-content/uploads/2011/08/cat2.jpg" style="width:100%;height:100%">
</div>

Open in new window

0
 
LVL 5

Author Comment

by:Tom Knowlton
ID: 36590208
Can you give an example?
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 56

Expert Comment

by:HainKurt
ID: 36590222
scale means, preserve the ratio?
0
 
LVL 56

Expert Comment

by:HainKurt
ID: 36590389
I made this sample:

hope you find it useful
<html>
<head>
			<script src="http://code.jquery.com/jquery-latest.min.js" type="text/javascript" ></script>

<script>
$(document).ready(function() {
  $(".divImg img").each(function(index){

  //alert($(this).src + " : " + this.width + " - "+ this.height);

  var d = $(this).parent();
  var i = $(this);

  /*
  alert(d.width() + " - " + d.height() + " --> " + d.attr("w") + " - " + d.attr("h"));
  $(d).width(d.attr("w"));d.height(d.attr("h"));
  alert(d.width() + " - " + d.height());
  */

  var w = d.attr("w");
  var h = d.attr("h");

  var rd = w/h;
  var ri = $(this).width() / $(this).height();

  //alert(rd + " : " + ri);

  if (rd>=ri) {
  	//i.height(i.width()* (ri/rd)); 
  	i.height(h); 
  	}
  if (rd<ri) {
  	//i.width(i.height()* (rd/ri)); 
  	i.width(w);
  	}

	d.width(w);
	d.height(h);

  });
});
</script>
</head>
<body>

<div class="divImg" style="border:1px solid silver" w=600 h=200>
<img src="http://indianahumanities.net/wp-content/uploads/2011/08/cat2.jpg">
</div>

<div class="divImg" style="border:1px solid silver" w=100 h=100>
<img src="http://indianahumanities.net/wp-content/uploads/2011/08/cat2.jpg">
</div>

<div class="divImg" style="border:1px solid silver" w=200 h=300>
<img src="http://indianahumanities.net/wp-content/uploads/2011/08/cat2.jpg">
</div>

</body>
</html>

Open in new window

0
 
LVL 56

Accepted Solution

by:
HainKurt earned 250 total points
ID: 36590396
you add  w & h attributes to div, leave image as is then jQuery scales image to fit into that div and sets divs width & height (maybe we can just use style="width:xxx; height:yyy" on div element and use

  var w = d.attr("w");
  var h = d.attr("h");
-->
  var w = d.width();
  var h = d.height();

result should be same...
0
 
LVL 5

Author Closing Comment

by:Tom Knowlton
ID: 36590462
thx
0

Featured Post

Interactive Way of Training for the AWS CSA Exam

An interactive way of learning that will help you visualize core concepts so that you can be more effective when taking your AWS certification exam.  Built for students by a student to help them understand the concepts that they are being taught.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

What is a Lightbox? A Lightbox is the effect you see when you click, for example, an image and the screen fades out and up pops the same image but in its full size dimensions. There are lots of Lightbox effects for jQuery. Problem is they are a…
How to build a simple, quick and effective accordion menu using just 15 lines of jQuery and 2 css classes
The viewer will learn how to dynamically set the form action using jQuery.
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
Suggested Courses

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question