- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Tue, 23 Sep 2014 08:24:35 -0700
- To: Simon Pieters <simonp@opera.com>
- Cc: www-style list <www-style@w3.org>
On Tue, Sep 23, 2014 at 3:34 AM, Simon Pieters <simonp@opera.com> wrote: > On Tue, 23 Sep 2014 00:55:59 +0200, Tab Atkins Jr. <jackalmage@gmail.com> > wrote: >> It sounds like you're missing the definition of the "canvas" itself. >> The canvas is defined at >> http://www.w3.org/TR/CSS21/intro.html#the-canvas, but it doesn't seem >> to quite go into enough detail to nail down that the "origin" of it >> would be the rectangle it ordinarily limits rendering to. > > > That's not a correct definition, I think. See the test case above. The > origin needs to be the point on the canvas where the top left corner of the > viewport is when the viewport is in the default scroll position, or some > such, where the default scroll position depends on writing mode/direction. Yes, that's the "finite region of the canvas" that "rendering generally occurs witihin". It's not defined anywhere near specifically enough for your purposes, but that's definitely the concept you need; we just need to put down a better definition of the canvas and its "finite region" somewhere so you can point to it. ~TJ
Received on Tuesday, 23 September 2014 15:25:32 UTC