Web Browsers And Packages

Release: 2010-02-05
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Presto Web Browsers including Opera

Presto 2.2, used in Opera 10, is a Layout Level web platform using the Core 2 layout engine and Futhark scripting engine. Opera is available for many environments. This cutting-edge, web-standards supporting browser has support for:

• HTML 4.01 (HyperText Markup Language);
• HTML 5 'Subset';
• label attribute for option elements;
• HTML 5's <meta charset="">;
• HTML 5 Forms except for input types search, tel and color;
• ' named character reference;
• contenteditable and spell checking support (but not spellcheck attribute);
• canvas Element;
• WAI-ARIA adds support for Accessible Rich Internet Applications;
• Cascade StyleSheets (CSS) level 1, Visual & Interactive and Paged level 2.1 provides a realistic way of adding presentation and layout to your document structures;
• Some main and custom CSS 3 features;
• The ability to style and script with unknown markup;
• For image support we have GIF89a, JPEG, PNG, Icons (.ico, .png, .jpg, .gif), BMP (Windows Bitmap), XBM (X Bitmap), WBMP (Wireless Bitmap) and SVG 1.1;
• Document Object Model (DOM) level 1 (HTML, XML), 99% of level 2 (Core, HTML, XML, Views, Stylesheets, CSS, CSS2, Events, UIEvents, MutationEvents, MouseEvents, HTMLEvents, Traversal, Range), some Level 3 (bits of Core, LS (Load & Save), LS-Async (Asynchronised Load & Save) and XPath as well as partial XML and Events), Bits of DOM 5 HTML exposes the document to scripting interaction;
• JavaScript 1.6 (without multiple catches);
• Selectors API allows an easier way to access parts of the DOM using CSS-like selectors;

Canvas feature support includes:

• Stroke and fill colours;
• Rectangles;
• Paths;
• rgba/hsla colours;
• Linear and radial gradients;
• Patterns;
• Translations, rotation and scale;
• Bring in pixel images;

CSS level 3 features supported includes:

• hsl(), rgba(), hsla();
• Namespace and Speech Modules;
• opacity and box-sizing for layout model switcher;
• Most of CSS3 Media Queries and its own -o- linking properties for XML;
• text-shadow;
• ::selection pseudo-element selector, Structural pseudo-class selectors (like :nth-child, :not, :empty, :first-of-type, etc), :enabled, :disabled and :checked UI state pseudo-class selectors and the :target selector;
• From Opera 10: @font-face At Rule with multiple src values, local() and format() functions (support for TrueType and OpenType fonts as well as SVG Fonts);

SVG support includes:

• Groups;
• Stroke and fill colours;
• Basic shapes (Rectangles, Rounded Corner Rectangles, Lines, Circles, Ellipses, Polylines and Polygons);
• Paths;
• Opacity;
• Text;
• SVG 1.2 text (textArea, tbreak, etc);
• Hyperlinkg;
• Linear and radial gradients;
• Translations, skews, rotation and scale;
• Bring in pixel images;
• SVG declarative animation;
• SVG Fonts;
• SVG (at least 1.1) Filters;
• CSS support (CSS properties not supported on SVG text);
• Scripting support;
• Scripted animation;
• SVG integrates with webpage (true transparent background);

In the realm of XML:

• eXtensible Markup Language (XML) 1.0 and 1.1 with Namespaces & XML-Stylesheet Processing Instruction (PI);
• xml:id Attribute;
• eXtensible HyperText Markup Language (XHTML) 1.0, 1.1 (without Ruby Annotation) and Basic 1.0;
• Wireless Markup Language (WML) 1.0 to 2.0 & XHTML Mobile Profile provides document structure primarily for the mobile and PDA market;
• CSS for Mathematical Markup Language (MathML) 2 to present math and sciences expressions on the web;
• Scalable Vector Graphics (SVG) 1.1 and partial 1.2 Tiny for ultimate 2-dimensional vector image display on desktop and mobile;
• eXtensible Stylesheet Language Transformations (XSLT) 1 & eXtensible Path Language (XPath) 1 allows the ability to convert document structure into other document structures;
• RSS and Atom news feed support;
• XML Events for current and future script event handling;
• XHTML+Voice 1.2 (includes VoiceXML 2.0) for Text-To-Speech and Speech Recognition handling;
• Limited XML Document Type Definition support only to process Entities in the Subset;

providing an excellent platform for experiencing the World Wide Web.

Opera passes the Acid 2 Test which tests Cascade Stylesheet (CSS) support. More about the Acid 2 Test from the Web Standards Project (WASP).

Opera 10 also clocks 100 out of 100, passing all tests and one test took 26 attempts, on the Acid 3 Test which tests DOM, scripting, HTML, SVG and various other technologies for Web 2.0. More about the Acid 3 Test from the Web Standards Project (WASP).

In order to allow users to navigate and use interactive webpage features using the keyboard (part of making webpages accessible) Opera provide the following: You can tab through form controls in general. On MS Windows and Linux/Unix platforms use control+down arrow to highlight each link at a time or control+up arrow to highlight the previous link. On Apple Mac OS X use command+down arrow to highlight each link at a time or command+up arrow to highlight the previous link.

To download Opera you can go to its official website.

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