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[Bug 19677] New: Add <canvas>.supportsContext(DOMString contextId, any... arguments)

From: <bugzilla@jessica.w3.org>
Date: Tue, 23 Oct 2012 20:55:11 +0000
To: public-html@w3.org
Message-ID: <bug-19677-2495@http.www.w3.org/Bugs/Public/>

          Priority: P2
            Bug ID: 19677
                CC: mike@w3.org, public-html-wg-issue-tracking@w3.org,
          Assignee: erika.doyle@microsoft.com
           Summary: Add <canvas>.supportsContext(DOMString contextId,
                    any... arguments)
        QA Contact: public-html-bugzilla@w3.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: eoconnor@apple.com
          Hardware: PC
            Status: NEW
           Version: unspecified
         Component: HTML5 spec
           Product: HTML WG

Web authors need a way to detect whether or not different canvas contexts are
supported. Currently authors do this by calling <canvas>.getContext, but this
can be very expensive.

Dean proposed adding a supportsContext method in

Ian added <canvas>.supportsContext in r7482 of the WHATWG spec:

The work to implement <canvas>.supportsContext in WebKit is being tracked in

We should consider pulling this in for HTML5.

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Received on Tuesday, 23 October 2012 20:55:13 UTC

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