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Feature documentation for QtWebKit 2.0
NOTE: This is page is incomplete and under construction. These tables will be moved to QtWebKit documentation.
Overview
QtWebKit 2.0 is a web content engine based on the Open Source WebKit engine.
High-level list of supported standards:
- HTML 4.01, partial and experimental support for upcoming HTML 5
- XHTML 1.0
- CSS 2.1 and partial and experimental support for upcoming CSS3
- ECMAScript 3 (JavaScript)
- DOM Level 2
- AJAX technologies, including XMLHTTPRequest
- XHTML / MP support
As a general indicator of web compliance, QtWebKit 2.0 passes the Acid 2 and Acid 3 tests.
QtWebKit 2.0 is included in Qt 4.7. It can also be used with Qt 4.6 or Qt 4.5, however these cases are not covered by commercial support from Nokia. Qt 4.5 support is community driven and not verified by Nokia.
This documentation uses the following classification for the levels of support:
- Not implemented: implementation for the feature does not exist or is so incomplete that even validation and experimentation is not recommended
- Technology preview: the implementation of the feature is available for experimentation and validation, but not recommended for production use. The implementation may be incomplete and there may be known problems.
- Experimental: the implementation of the feature can be used in production applications with the caveat that the API, standard or the implementation may be still change in future releases, or there may be some gaps or limitations in the implementation.
- Supported: the feature is fully ready for production applications. The implementation has been verified, and we don't expect changes in the API or standard.
Features for C++ developers
QtWebKit has a C++ API that allows Qt applications to embed web content, and to examine and manipulate the web content. The QtWebKit C++ API is extensively documented in the QtWebKit documentation. The C++ API documentation for QtWebKit 2.0 is included in Qt 4.7 documentation, available at http://doc.qt.nokia.com.
Web application features
| Feature | Status | Qt documentation | Layout test |
| HTML5 Offline support: HTML5 application cache (manifest attribute) | Technology preview | (1), (2) OfflineWebApplicationCacheEnabled attribute | |
| HTML5 Offline support: Web Storage (DOM storage, local storage & session storage) | Experimental | (1), (2) LocalStorageEnabled attribute | LayoutTests/storage |
| HTML5 Offline support: Web SQL Database | Experimental | [(1), (2) OfflineStorageDatabaseEnabled attribute | |
| HTML5 Offline support: navigator.onLine attribute, online and offline events | ? | ||
| Web Workers - dedicated workers | Not implemented ? | LayoutTests/workers | |
| Web Workers - shared workers | Not implemented ? | LayoutTests/fast/workers | |
| Web Sockets | Not implemented | LayoutTests/websocket |
JavaScript JIT
Just-in-time (JIT) compilation for JavaScript is supported on the following platforms:
- Mac OS X, 64-bit and 32-bit
- Windows desktop platforms when using Microsoft Visual C++ or gcc 4.1 or higher (MinGW). 32-bit build only; JIT is not supported on 64-bit builds on Windows.
- Linux on x86 platforms with gcc 4.1 or higher
- Linux on ARM (Thumb-2 JIT is not currently used)
Netscape Plug-in API
QtWebKit supports the Netscape Plug-in API on X11, Windows, Mac OS X and Symbian.
Advanced CSS Features
| Feature | Status | Layout tests |
| CSS 2D Transforms Module Level 3 | Experimental, with -webkit prefix. Performance enhanced implementation with accelerated compositing in Technology Preview. | LayoutTests/transforms, LayoutTests/transforms/2d, /LayoutTests/fast/transforms, LayoutTests/fast/css |
| CSS 3D Transforms Module Level 3 | ? | LayoutTests/transforms, LayoutTests/transforms/3d/general, LayoutTests/transforms/3d/hit-testing, LayoutTests/transforms/3d/point-mapping, LayoutTests/compositing/animation |
| CSS Transitions Module Level 3 | Experimental, with -webkit prefix. Performance enhanced implementation with accelerated compositing in Technology Preview. | LayoutTests/transitions, LayoutTests/fast/css, LayoutTests/compositing/transitions |
| CSS Animations Module Level 3 | Experimental, with -webkit prefix | LayoutTests/animations, LayoutTests/animations/3d, LayoutTests/compositing/animation |
| Backgrounds and Borders Module Level 3 support | Technology preview, with -webkit prefix | |
| CSS Text Level 3 | Not implemented | |
| CSS Fonts Module Level 3 | Technology preview | |
| Styling scrollbars with -webkit-scrollbar-* CSS properties | ? | |
| -webkit-mask-* CSS properties | Experimental, WebKit specific | |
| CSS Canvas drawing | Experimental, WebKit specific | |
| CSS reflections | Experimental, WebKit specific |
HTML5 canvas and media
| Feature | Status | Layout test |
| <canvas> element | Experimental (partial support). | LayoutTests/fast/canvas |
| 3D canvas support with WebGL | Technology preview (partial support) |
QtWebKit has had experimental support for HTML5 media via the Phonon multimedia integration since Qt 4.5. As of QtWebKit 2.0, we have added integration to the new QtMultimedia framework in Qt 4.7. In the future, improvements and new development will focus on the QtMultimedia framework based architecture.
| Feature | Status | Layout test |
| <audio>, <video> and <source> element | Technology preview with QtMultimedia in Qt 4.7. Also previous experimental support with Phonon still available when using Qt 4.6. | LayoutTests/media, LayoutTests/fast/media |
HTML5 functionality in web forms
| Feature | Status | Layout test |
| HTML5 input types such as email, tel, date, color | Not implemented | |
| autofocus attribute for web form controls | technology preview | |
| placeholder attribute for placeholder text in an input field | technology preview | |
| autocomplete attribute for input values | ||
| maxlength attribute for text fields |
Other new web developer APIs and HTML5 features
| Feature | Status | Layout test |
| Geolocation API | Not implemented | |
| HTML5 getElementsByClassName API | Experimental | |
| HTML5 element.classList API | ||
| HTML5 registerProtocolHandler API | ||
| HTML5 registerContentHandler API | ||
| HTML5 Cross-document messaging API | ||
| W3C Selectors API | Experimental | |
| W3C Server-sent Events | ||
| Multi-touch input DOM events | Not implemented | |
| contenteditable global attribute | Experimental | |
| <progress> progress indicator | Technology preview (which platforms? will this be enabled by default?) | |
| <meter> an indicator for scalar measurement | Technology preview (which platforms? will this be enabled by default?) | |
| <a rel="noreferrer"> (don't provide referrer info when following link) | ?, support exist in WebKit (http://webkit.org/blog/907/webkit-nightlies-support-html5-noreferrer-link-relation/) | |
| HTML5 drag and drop | Technology preview | |
| <ruby>, <rt>, <rp> elements for Chinese notes or characters | ||
| <figure> element | ||
| <embed> element for embedding content such as a plug-in | ||
| Inline MathML | Not implemented | |
| Inline SVG | Experimental |
