Re: [Wikitech-l] Frustration about Canvas
Ok, Ricordisamoa, it runs, thanks for suggestion and your boldness while reading my DIY js code ;-) ! Alex 2015-01-08 0:33 GMT+01:00 Ricordisamoa ricordisa...@openmailbox.org: It's about https://it.wikisource.org/wiki/MediaWiki:Gadget-cornersAlpha.js, isn't it? This change https://it.wikisource.org/w/index.php?diff=1499050oldid= 1498642 should do the job. Il 07/01/2015 10:21, Alex Brollo ha scritto: While dragging a little bit into canvas, I successfully upload into a canvas a cropped clip of the image of a djvu page into it.source, just to crash into a DOM exception The canvas has been tainted by cross-origin data while attempting do access to pixel data with both getImageData() and toDataURL() methods. Again, it seems a CORS issue. Am I wrong? Is there some doc about this issue? Alex brollo ___ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l ___ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l ___ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
[Wikitech-l] Frustration about Canvas
While dragging a little bit into canvas, I successfully upload into a canvas a cropped clip of the image of a djvu page into it.source, just to crash into a DOM exception The canvas has been tainted by cross-origin data while attempting do access to pixel data with both getImageData() and toDataURL() methods. Again, it seems a CORS issue. Am I wrong? Is there some doc about this issue? Alex brollo ___ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
Re: [Wikitech-l] Frustration about Canvas
What browser, and do you have the code somewhere ? That makes assisting a lot easier. Taking a wild guess based on your comments so far, if you are importing an img into a canvas, you might require the 'crossorigin' attribute to be set on that element. https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image DJ On Wed, Jan 7, 2015 at 10:21 AM, Alex Brollo alex.bro...@gmail.com wrote: While dragging a little bit into canvas, I successfully upload into a canvas a cropped clip of the image of a djvu page into it.source, just to crash into a DOM exception The canvas has been tainted by cross-origin data while attempting do access to pixel data with both getImageData() and toDataURL() methods. Again, it seems a CORS issue. Am I wrong? Is there some doc about this issue? Alex brollo ___ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l ___ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
Re: [Wikitech-l] Frustration about Canvas
It's about https://it.wikisource.org/wiki/MediaWiki:Gadget-cornersAlpha.js, isn't it? This change https://it.wikisource.org/w/index.php?diff=1499050oldid=1498642 should do the job. Il 07/01/2015 10:21, Alex Brollo ha scritto: While dragging a little bit into canvas, I successfully upload into a canvas a cropped clip of the image of a djvu page into it.source, just to crash into a DOM exception The canvas has been tainted by cross-origin data while attempting do access to pixel data with both getImageData() and toDataURL() methods. Again, it seems a CORS issue. Am I wrong? Is there some doc about this issue? Alex brollo ___ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l ___ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
