Bug 51652
| Summary: | Add canvas.toBlob | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Charles Pritchard <chuck> |
| Component: | Canvas | Assignee: | Nobody <webkit-unassigned> |
| Status: | RESOLVED CONFIGURATION CHANGED | ||
| Severity: | Normal | CC: | annevk, ap, bugmail, cdumez, dino, ericbidelman, kangax, mdelaney7, noel.gordon, rniwa, syoichi |
| Priority: | P2 | ||
| Version: | 528+ (Nightly build) | ||
| Hardware: | PC | ||
| OS: | OS X 10.5 | ||
Charles Pritchard
Using the same semantics as toDataURL (image/png is the default output), add Blob getBlob([Optional] in DOMString contentType, [Optional] args...).
Currently, an image must be copied to a string using toDataURL, then to an array buffer using base64 decoding, before it can be run through createObjectURL. getBlob would reduce the number of operations.
| Attachments | ||
|---|---|---|
| Add attachment proposed patch, testcase, etc. |
noel gordon
http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#dom-canvas-toblob
http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2011-April/031243.html
Charles Pritchard
Support for Canvas toBlob is likely to come from Chromium:
http://code.google.com/p/chromium/issues/detail?id=67587
Ryosuke Niwa
This API has been renamed to toBlob: https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement/toBlob
Anne van Kesteren
This was added at some point.