Canvas API: A JavaScript library for the HTML5 canvas tag.

Copyright © 2010 Oliver Moran (http://www.canvas-api.com)

Contributors: Todd Eichel, Masanao Izumo, John Resig, Jacob Seidelin, Bill Surgent, Yuichi Tateno

Canvas API is a library for developing rich web content using JavaScript¨ (ECMAScript) and the HTML5 canvas tag.

The functionality offered by the library is comparable to applications such as Adobe¨ Flash¨, including:

• Images (GIF, PNG, JPEG, SVG, etc.), audio (MP3, OGG, etc.) and video support (MPEG, MOV, OGG, etc.).
• Geometric shapes (lines, rectangles, polygons, circles, BŽzier curves, arcs).
• Text (outline and filled), including fonts imported via CSS.
• Shadows, alpha blending, fill gradients (liner and gradient) and patterns.
• Grouping, layering and masking of drawings, images, video and text.
• Matrix transformation of all objects and groups of objects (translation, rotation, skew, scale).
• Baked in animations and tweening with multiple effects and frame event callbacks (such as onDraw and onBeforeDraw).
• Mouse and touch events on all objects (such as onPress or onRelease), drag and drop support and key press events.
• Copy, paste and saving of canvas images as files.
• Built-in support for the Pixastic image effects library by default (blur, sepia, invert, etc.) or other user-definable image effects libraries.

Canvas API uses only expected HTML5 standard JavaScript2 W3C¨ and is supported by the latest versions of:

• Firefox¨
• Safari¨ (including iPhone¨)
• Chrome¨
• Android¨
• Opera¨
• Camino¨ (excluding text, video and audio functions)

Canvas API is also supported by the beta version of Internet Explorer¨ 9 and works on Windows¨, Mac¨, Linux¨, iPhone¨ and Android¨ as well as other PCs and mobile devices.

Because Canvas API is standards compliant it does not require any plug-ins to work.

Canvas API is licensed under the LGPL (http://www.gnu.org/licenses/).