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August 11th, 2010

Easy Mobile Site with CSS3

CSS3 brings sites to mobile comfortably.

One requirement that is becoming hugely popular in web development is mobile device support.

One of the biggest issues with sites on mobiles is bandwidth.
A lot of it is contributed to the sites style alone.
This can be resolved with CSS3, at least on Android and iPhone.
I tested them myself.
Of course, I doubt Windows Mobile will handle it as IE does not. Maybe the upcoming IE9 will.

On with the code!

To make a site have an alternate theme for the above mentioned phones and maybe others is simple.
No JavaScript required.

Simply make a CSS stylesheet, name it anything, eg. mobile.css
Now in this file you overwrite the widths of the site (main box model blocks).
Making them a max-width of less than 480px.
Make sure you count your padding in there.

In the example I am going to show, I also increase the navigation size for ease on touch screen devices.
I also increase the overall font size. This is easy if you use a Typographic scale like I do. (You will see this also)

Now link in the mobile styesheet with the CSS media=”" property.
In CSS3 you can now use it like this

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media="only screen and (max-width: 480px), only screen and (max-device-width: 480px)"

The first part only screen and (max-width: 480px) works nicely so we can test it on our desktops in FireFox, Safari, Chrome… Not IE..
The second part , only screen and (max-device-width: 480px) is a device detection eg.(mobile device).

So this complete line linking to the mobile.css will look like this

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<link href="mobile.css" media="only screen and (max-width: 480px), only screen and (max-device-width: 480px)" rel="stylesheet" type="text/css">

Add this after you normal CSS linked file so it overwrites it when used.

One other thing we need is a meta tag required for some mini browsers.
The tag looks like this

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<meta name="viewport" content="width=device-width" />

Add this line to the top of your sites header by the other meta tags before your CSS links.

Here is a working sample
CSS3 Mobile Device Site Sample
View it in your browser and reduce the browser width to 480px or less and you will see it change.
Or view it in an iPhone or Android phone.

I also included links in this sample to the source code so you can see the code in full.
Here they are again
Index Source
StyleSheet
Mobile Stylesheet

Conclusion:

With simple options like this you can make a lightweight version of any site for these devices.
Simple overwriting backgrounds, CSS image links, etc…..

Nice simple solution with no extra URL re-writes or JavaScripts for detection…
We can only hope this will be fully adopted to all Mobile HTML browsers, and soon.

And for fun, here is a QR-Code link to the sample

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Posted in CSS | No Comments »

July 5th, 2010

External Links New Window

Post Image

Open All External Links in a New Browser Window

Expanding on the post about XHTML valid target post.

Lets make this a bit automated using jQuery to search for external links and add a class named external.
As before, these links will be XHTML valid.
Then from the post we are expanding on these links will be automatically opened in a new window.

To start we need to load jQuery in our site, quick and simple we will load it from Google.

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<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>

Moving on to the code needed for our task,
The Full Code, I will explain following the code.

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jQuery(document).ready(function(){
	//Process links to check if they are internal or external
	var start = "[href*='";
	var local = 'http://localhost/';
	var urlcheck = start + local + "']";
 
	jQuery("a[href^='http:']").not(urlcheck).addClass('external');
 
	//External links should now have a class added to them, lets process this classes action
	jQuery(function(){
	      jQuery('a.external').click(function(){
			window.open(this.href);
			return false;
	      });
	  });
});

The line that MUST BE CHANGED

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var local = 'http://localhost/';

The http://localhost/ needs to be changed to the URL of your site.
For example, here it would be http://valid-webs.com/

It gets added to the urlcheck variable and used for checking all links against with in the viewed page.
Then the search happens in this line

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jQuery("a[href^='http:']").not(urlcheck).addClass('external');

If any links in the page do not have the URL var local they will have the external class added to them.

Then the click function is added to the class external the same as in the original post.

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jQuery(function(){
    jQuery('a.external').click(function(){
        window.open(this.href);
        return false;
    });
});

From that point on all external links with in the site will open in a new browser window.

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Posted in jQuery | No Comments »

May 19th, 2010

Custom Web Fonts got Easier

Custom fonts for styling just got easier with Googles release of the new Font API

It has been a bit of a pain including custom fonts in styling do to file size, bandwidth, page load etc…
With Google releasing this new API Google Font Directory it will make things a whole lot easier for us developers and also for the users viewing the sites.

As we know including external files from huge redundant places like Google offers the best browser caching around.
The reason is that the more sites that include these files in their site, the better the chance is the the users visiting already have the file cached in their browsers.

So without further ado, here is how you can use the Google custom fonts.
There are 2 ways you can use this API, the first being more pointed towards using just one font,

You include the API style link in your html head section like this

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<link href='http://fonts.googleapis.com/css?family=Cardo' rel='stylesheet' type='text/css'>
<style type="text/css">
	h3 { font-family: 'Cardo', arial, serif; }
</style>

Now any place a h3 tag is used the font will be Cardo.
Another option is to import it directly into your CSS file at the top

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@import url(http://fonts.googleapis.com/css?family=Cardo);

Now you can use the Cardo font anywhere in your CSS file you wish.

There is also a JavaScript version to include multiple fonts.
It looks like this,

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 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js"></script>
    <script type="text/javascript">
      WebFont.load({
        google: {
          families: [ 'Tangerine', 'Cantarell' ]
        }
      });
    </script>

The CSS uses a class so that if it is not activated via the JavaScript, it will not even be included to the element.
The CSS looks like this

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<style type="text/css">
.wf-inactive p {
        font-family: serif;
      }
.wf-active p {
        font-family: 'Tangerine', serif;
	 font-weight: bold;
	 font-size: 26px
      }
.wf-inactive h1 {
        font-family: serif;
        font-size: 16px
      }
.wf-active h1 {
        font-family: 'Cantarell', serif;
        font-size: 16px
      }
</style>

Here is a complete working example

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Google Custom Fonts</title>
<!-- Custom fonts http://code.google.com/webfonts -->
<link href='http://fonts.googleapis.com/css?family=Yanone+Kaffeesatz' rel='stylesheet' type='text/css'>
<style type="text/css">
	h3 { font-family: 'Cardo', arial, serif; }
</style>
 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js"></script>
    <script type="text/javascript">
      WebFont.load({
        google: {
          families: [ 'Tangerine', 'Cantarell' ]
        }
      });
    </script>
    <style type="text/css">
      .wf-inactive p {
        font-family: serif;
      }
      .wf-active p {
        font-family: 'Tangerine', serif;
		font-weight: bold;
		font-size: 26px
      }
      .wf-inactive h1 {
        font-family: serif;
        font-size: 16px
      }
      .wf-active h1 {
        font-family: 'Cantarell', serif;
        font-size: 16px
      }
    </style>
  </head>
<body>
    <h1>This is using Cantarell</h1>
	<h3>Something with Cardo</h3>
    <p>This is using Tangerine!</p>
</body>
 
</html>

With these new font options developers like me get an even bigger playground!

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Posted in CSS | No Comments »