Nearly 2 years ago, HTML, the markup language used for structuring and presenting content on the web released version 5. Intended as a substitute for HTML 4 and XHTML 1 and DOM Level 2 HTML, HTML5 improved the language with support for cutting-edge multimedia such as <video>, <audio> and <canvas>, while keeping HTML readable by humans and consistently understood by computers and devices. In addition to improving and rationalizing the markup for existing documents, HTML supplied markup and APIs for complex web applications. Frequently compared to Adobe’s Flash, HTML5 is now the main content delivery standard. In the next few months, HTML 5 will upgrade to HTML 5.1.
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*/ pageErrOBSOLETE, /* * Internal error: the machine was called recursively. @ingroup PageContentsErrors */ pageErrRecursiveMachine, /* * An image is specified as an image mask with more than 1 bit per pixel. @ingroup PageContentsErrors */ pageErrInvalidImageMaskDepth, /* Defined after Acrobat 2.1 */ /* * Invalid Pattern.
The HTML 5.1 standard has been promoted, in unanimity, from a “Release Candidate” to a “Proposed Recommendation,” the final step before it becomes a “W3C Recommendation” and replaces HTML 5 as the current HTML standard. It’s safe to implement new features as all major browser vendors should implement the standard into upcoming versions.
While HTML 5 was a groundbreaking release, HTML 5.1 further enhances HTML with a set of additions while deprecating some obsolete or old assets. There is a lot to get excited about. The features added between HTML 5.0 and HTML 5.1 can be seen here.
The crown gem is the <picture> element.
Implemented in Chrome, Opera, Firefox, Safari and Edge, the introduction of the <picture> tag is an acknowledgement of the importance of this element. Technically <picture> is a container used to specify multiple <source> elements for a definite <img> contained therein. The browser will select the appropriate source according to the current layout of the page (ex. the box the image will appear in) and the device it will be displayed on (ex. a normal or retina display device.). A handy attribute to <picture> is the srcset attribute, which selects images to be used in different scenarios.
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Obviously, HTML 5.1 will remove some elements. Unlike some news resources citing as <dialogue> as an addition to HTML 5.1, according to the official W3C Proposed Recommendation, the element is in fact removed. Other removed items include:
- The registerContentHandler(), isContentHandlerRegistered() and isProtocolHandlerRegistered() methods
- The datetime value for the type attribute of the input element
- Unimplemented parts of the autofill mechanism
- The label element is no longer Reassociatable
- The toolbar type for the menu element
- The inputmode attribute
And while <dialog> was removed, some tags, proposed for removal, are still available in the new specification, however, are labelled as “at risk.” The elements will be removed in HTML 5.2 if browser makers won’t support them properly. So it’s a good idea to avoid, for the time being, to use interpretation of elements such as <menu> and <menuitem> (specifically contextmenu), or the <keygen> tag. If you really like them … start a petition.
HTML 5.1 is set to become standard in the following month. In the meantime, W3C is already working on HTML 5.2.
A nice addition is the <meta name=”theme-color”> definition. If you are familiar with Vivaldi, the browser developed by Opera’s former CEO Jon Stephenson von Tetzchner, you’ve enjoyed the way it adapts UI toolbar colors according to the page you are on. The feature will allow developers to pick the dominant color of a web page, and implement it in different UI scenarios.
In the long run, HTML will evolve in a predictable, but intriguing, way. The core vocabulary and features will extend in four main directions:
- As upcoming specifications such as HTML 5.2
- As distinct specifications adapted as HTML5 extensions or features (see SVG)
- Modules removed from the original HTML5 specifications and standardized separately (seeCanvas, the draw-by-scripting element)
- Modules as HTML5 extensions
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Developer(s) | Adobe Systems |
---|---|
Stable release | |
Operating system | Mac OS X, Microsoft Windows |
Type | Rich Internet application |
License | |
Website | www.adobe.com/products/flashcatalyst/ |
Adobe Flash Catalyst (formerly known by its codename Thermo) is a designers' tool for creating the user interface for Rich Internet Applications.
Development and sales of Adobe Flash Catalyst ended on April 23, 2012.
![Obsolete Obsolete](http://tug.org/pipermail/tex-live/attachments/20090714/15d6fc87/attachment-0003.png)
Features[edit]
With Flash Catalyst, user interface architects can create the user interface for Adobe Flex (now Adobe Flash Builder 4) applications using Adobe graphics software. Then developers can use the result to build the rest of the application in Flex.
Flash Catalyst can import Adobe Photoshop, Adobe Illustrator, Adobe Fireworks, or Flash XML Graphics (FXG) files keeping all their features. The converted artwork can then be used as functional UI components (creating Flex component skins). After importing, users use simple WYSIWYG techniques to create and edit behaviors (mouse event handling, etc.) without writing code and create animated transitions. Flash Catalyst can also use design-time data placeholders when marking up an application, testing interactivity, and choreographing motion. These placeholders can then be replaced at production-time with final artwork. This same method can be used to create UIs to handle dynamic data without having access to the actual data source.
Imported objects are maintained as linked files, so behaviors created in Flash Catalyst are still maintained even after the original file is edited in its originating program (e.g., Photoshop or Illustrator). Flash Catalyst is also compatible with Adobe Flash Builder (formerly called 'Flex Builder'), using the same project format.
In addition to its primary function of being a GUI composer for Adobe Flex components, Flash Catalyst also features a basic code workspace, which consists of a subset of Adobe Flash Builder's panels. Both tools being based on Eclipse, the code editor, project navigator and problems view are basically the same in both products. Thus for a simple project Flash Catalyst may even be used as the sole software for the entire authoring/programming steps.
See also[edit]
External links[edit]
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