11566 2010-12-17 05:14:54 +0000 Image should have getContext(...) just like canvas 2011-08-04 05:01:56 +0000 1 1 1 Unclassified HTML WG LC1 HTML5 spec unspecified PC Windows NT CLOSED FIXED P2 normal --- 1 warcraftthreeft ian ian mike public-html-admin public-html-wg-issue-tracking public-html-bugzilla oldest_to_newest 43446 0 warcraftthreeft 2010-12-17 05:14:54 +0000 This would remove the problem of having to generate new canvases and render an image to them to do trivial operations like getting the ImageData. var image = new Image(); var imageData; image.onload = function() { imageData = image.getContext("2d").getImageData(0, 0, image.width, image.height); } image.src = "example.png"; http://www.w3.org/TR/html5/embedded-content-1.html#the-img-element 44187 1 ian 2011-01-11 19:19:01 +0000 EDITOR'S RESPONSE: This is an Editor's Response to your comment. If you are satisfied with this response, please change the state of this bug to CLOSED. If you have additional information and would like the editor to reconsider, please reopen this bug. If you would like to escalate the issue to the full HTML Working Group, please add the TrackerRequest keyword to this bug, and suggest title and text for the tracker issue; or you may create a tracker issue yourself, if you are able to do so. For more details, see this document: http://dev.w3.org/html5/decision-policy/decision-policy.html Status: Partially Accepted Change Description: none yet Rationale: We'll probably add a way to get image data straight from a same-origin image in a future version (it's a little late in the cycle to add features right now), so I've marked this LATER. In the meantime, though, why is "having to generate new canvases" a problem? It's only five extra lines of code, which are easily put into a utility function and forgotten: image.onload = function() { var canvas = document.createElement('canvas'); canvas.width = image.width; canvas.height = image.height; var context = canvas.getContext("2d"); context.drawImage(image, 0, 0); imageData = context.getImageData(0, 0, image.width, image.height); } If you do this a lot, you can also just have a scratch canvas around for this purpose, already sized to the max of all the incoming images. 52487 2 mike 2011-08-04 05:01:56 +0000 mass-moved component to LC1