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How to Create a Grid of Diamonds with CSS

Posted · Category: Information, License Free

With the continued adoption of advanced CSS by browsers, we are starting to have the ability to do more and more using just CSS. As we have seen, you can make all kinds of crazy shapes with only CSS. On a recent client project, Trevor Davis has created a grid of diamonds with CSS and shared the tutorial: Who Says the Web is Just for Squares?

He is using Modernizr to detect if the browser supports CSS3 Transforms. And, he is using Sass and Compass for all of the CSS. You may now go forth and make some creative layout with different shapes.

diamond-grid-layout

Requirements: Sass and Compass CSS
Download Link: http://davist11.github.com/css-diamond-grid/
License: License Free

Modernize HTML5 Game with Hardware Scaling & CSS3

Posted · Category: Information

Modern browsers like Internet Explorer 10 are implementing stable versions of some interesting HTML5 features, including the offline, drag and drop and file APIs. These features are bringing us a new era of Web applications and fresh, quickly emerging gaming scenarios. In this two-part article, I’ll show how I used these new features to modernize my last HTML5 game, HTML5 Platformer. In this article, I’ll cover hardware scaling and CSS. In Part 2, I’ll cover the offline, file and drag-and-drop APIs. I hope you’ll get some great new ideas for your own games!

Note The URL demo is at the end of this article. Feel free to play using your favorite browser, and check out the Internet Explorer 10 gameplay video. The source code will be available for download in Part 2.

Scaling Across Devices

If you’re building an HTML5 game, you’re probably interested in the cross-platform nature of this standard programming language. But compatibility with a broad variety of devices means you have to take into account a huge number of resolutions. Compared to SVG, Canvas—at first—seems ill-prepared to handle this.

However, with a casual game based on sprites, there is a simple solution to implement. David Catuhe has done a great job of describing this on his blog, Unleash the power of HTML 5 Canvas for gaming – Part 1 (see the section called “Using the Hardware Scaling Feature” for specifics).

The idea is as simple as it is smart. You’re working inside a canvas at a fixed, predictable resolution, and you’re stretching it to the current displayed resolution using the canvas.style properties. Read the rest of this entry »

WinJS: Using the Windows Store Library for JavaScript

Posted · Category: Information

Part of the advantage of ramping up to write Windows Store apps is that you can utilize your existing knowledge of HTML, CSS and Javascript.

The Windows Library for JavaScript (referred to as WinJS) extends the support for Javascript in Windows Store apps, has a number of helper functions for common app development scenarios. In the article below, we’ll talk about how to get started with WinJS for creating custom types and namespaces, as well as handling and managing event listeners.

windows-store-app

Defining and deriving types with WinJS.Class

In the sections below, we’ll talk about how you can use the define and derive methods in the WinJS library to quickly create your own custom types, and specify their property constructors.

WinJS.Class.define

The WinJS.Class.define function is a helper function for defining a JavaScript type. You supply a constructor function, a set of “instance” members (which are defined on the prototype of the type), and a set of “static” members (which are defined on the type itself).

The properties that are added to the prototype of an object appear on any object that is instantiated by calling its constructor function, but the properties added to the type directly belong only to the type itself.

For example, let’s say we want to define a class Robot, which has an instance property name and a static property harmsHumans. The modelName property belongs to the individual objects created with Robot(name) contstructor function, but the harmsHuman property is valid for all Robot objects. Read the rest of this entry »

Using Unprefixed CSS3 Gradients in Modern Browsers

Posted · Category: Information

Web standards like HTML5 and CSS3 continue to change. One of the most significant changes has been the W3C Candidate Recommendation for CSS Gradients which allows developers to code for modern browsers like Internet Explorer 10 without using vendor prefixes. In this article, I’ll take you through some differences between the old and new syntax and behavior and provides some insight into the change. Hopefully it will save you some time as you support many browsers.

Note: IE10 stills supports older CSS Gradients syntax from the W3C Working Draft of 17 February 2011 behind the vendor prefix -ms- so your current code won’t break.

Key Changes

Should you choose to simplify your CSS by making the move from vendor-prefixed CSS3 Gradients to unprefixed CSS3 Gradients, there are some key syntax changes to be aware of. Many gradient generators have provided cross-browser markup, including markup for unprefixed gradients. In many cases, the unprefixed markup is no longer valid according to the CSS Image Values W3C Candidate Recommendation that covers gradients. Here are the changes you should be aware of. Read the rest of this entry »

Part II: Create a Windows 8 RSS Reader App with HTML5

Posted · Category: Information

This article is the second part to: How to Create a Windows 8 RSS Reader App with HTML5. If you haven’t read it, check it out first.

We’re now going to see how to display the details of each article. We will use for that a transition animation, we will play with the simulator and we will continue to discover Blend to use CSS3 Multi-columns for instance.

Like in the previous article, you’ll find the source code to download at the end of the article.

During this article, we’ll see:

  • Step 1: using the simulator
  • Step 2: displaying the articles’ details
  • Step 3: finishing the design of the detail view with Blend
  • Step 4: source code to download and conclusion

Note: this article has been updated on 21/08/2012 to implement the changes in the UI & in the code between Windows 8 Release Preview and RTM. In a general manner, if you need to migrate your application from RP, you should read this document: breaking changes document. In our case, there was 0 impact between RP & RTM here. Read the rest of this entry »

JavaScript Asynchronous for Windows Store Apps

Posted · Category: Information

JavaScript is a single-threaded language. This means that invoking a long-running process blocks all execution until that process completes. UI elements are unresponsive, animations pause, and no other code in the app can run. The solution to this problem is to avoid synchronous execution as much as possible.

apps-for-windows-8

One way to do this is to have a function execute at a later time, as with event handlers, which are invoked after another call has raised an event. Callback functions are another kind of asynchronous processing, because they call back into the code that initiated the process. Read the rest of this entry »

Full-Page Animations with CSS Transforms & Animations

Posted · Category: Information

Modern browsers like Internet Explorer 10 support CSS 3D and 2D Transforms and CSS Animations. By tapping the power of your GPU and running asynchronously from regular JavaScript, these technologies provide a more performant and flexible alternative to traditional script-based animations for Web content. I’ve talked about how to build with CSS 3D Transforms as well as CSS Animations and Transitions in previous articles. In this article, I’d like to introduce a more “unconventional” use case for these technologies by describing the concept of “full-page animations” that can be used during the navigation process to add fluidity and continuity to browsing. Our target is to achieve a seamless browsing experience in which content smoothly appears into view when the user visits a page and transitions away when he clicks on a link or performs a relevant action.

These effects can be accomplished by transforming the HTML <body> element using CSS Animations. However, this use case presents some considerations that we felt were worthy of discussion, such as the effect of layout and sizing on transforming <body>, as well as how to appropriately time page navigations so that they mesh properly with our animations.

The code samples in this post use unprefixed CSS markup as supported by IE10 Release Preview; other browsers may require vendor prefixes for the CSS Animations and CSS Transforms properties used. Read the rest of this entry »

How to Create a Windows 8 RSS Reader App with HTML5

Posted · Category: Information

Starting from scratch, we’re going to learn through these 2 tutorials how to build a small RSS reader with HTML5, CSS3 and WinJS, the Microsoft JavaScript framework for Windows 8. We will then build a WinRT application targeting the Windows Store. We’ll try also to follow the Windows 8 UI design guidelines by using Expression Blend 5. If everything goes fine, you should be able to follow these 2 articles in 30 minutes.

windows-8-apps

This first article will help you to create the welcome screen that will use a WinJS ListView control. This control will display all the blog posts recently published via nice thumbnails. The 2nd one will work on the detail view displayed when you’ll click on one of the items. At last, you’ll find at the end the final solution to download. See it as useful complementary resources if you need to clarify some parts of this article. Read the rest of this entry »

How to Correct Legacy Document Problems with Fonts

Posted · Category: Information

Modern browsers like Internet Explorer 10 and 9 introduced sub-pixel font positioning as part of its hardware-accelerated rendering of HTML5 content. That was an important step into the future as it enabled zoom-independent text metrics—an important characteristic when touch gestures like pinch-zoom are part of the browsing experience on Windows 8 touch-enabled devices. This article shows how easy it is to help your fonts look better across many browsers by declaring Standards Mode.

Zoom Example: Legacy vs. Standards Modes

Below are side-by-side comparisons showing text from a popular news site in 8 and 10 document modes at 100% and 150%. Note the especially poor letter spacing between some letters in the 150% 8 mode example (upper right).

optical-zooming

Move to Standards Today

The best fix for this behavior is to move your pages Standards Mode. Compat Inspector is a valuable tool to help you migrate to IE9 or IE10 mode. Compat Inspector identifies potential issues and offers steps you can take to resolve them. In general, the HTML, CSS, and JavaScript markup and code you use with other browsers will work great in IE10 once any browser detection is replaced with feature detection and vendor-specific CSS prefixes are updated to include -ms- or unprefixed versions. Modernizr is a JavaScript library that can help with these issues. Read the rest of this entry »

Google Maps Santa Tracker Features Latest Technology

Posted · Category: Information, License Free

Google Maps Santa Tracker is created and developed by Google, with a little help from Santa’s elves. On Christmas Eve Google will be proudly showcasing a preview of Santa’s dashboard, the technology that powers his sleigh during his around-the-world journey.

Santa’s dashboard is featuring the latest and greatest in Google Maps technology and sleigh engineering, which will allow you to follow his progress around the world, and also learn a little about some of his stops along the way. You can go ahead and explore his village, you might just find some fun activities and meet some interesting elves.

santa-tracker

Requirements: –
Demo: http://www.google.com/santatracker/
License: License Free

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