On Tue, Jan 8, 2013 at 5:56 AM, Boris Zbarsky bzbar...@mit.edu wrote:
On 1/8/13 8:14 AM, Boris Zbarsky wrote:
On 1/8/13 2:09 AM, Ian Hickson wrote:
In the spec's security model, origins are never relevant for elements
except when we're looking at the element's data.
Yes. I think the spec's
On Mon, Jan 7, 2013 at 7:51 PM, Ian Hickson i...@hixie.ch wrote:
On Mon, 7 Jan 2013, Adam Barth wrote:
Why not just introduce a keyword or pragma to JavaScript that tells
the user agent to act as if the end of the Program production had been
reached, and that it should treat the remainder
On 1/9/13 3:11 AM, Adam Barth wrote:
I'm not convinced of that. I understand that Gecko need to deal with
these complications because of a number of Mozilla-proprietary APIs,
Actually, what I'm talking about here has nothing to do with APIs but
everything to do with wanting to write web
Some developers are starting to design large scale games using our HTML5
game engine, and we're finding we're running in to memory management
issues. Consider a device with 50mb of texture memory available. A game
might contain 100mb of texture assets, but only use a maximum of 30mb of
them at a
On 09/01/2013, at 4:08 PM, Dirk Schulze dschu...@adobe.com wrote:
On Jan 8, 2013, at 9:35 AM, Rik Cabanier caban...@gmail.com wrote:
I looked at pdf2js which is using this fillRule property. As I expected,
introduction of the property results in code like this:
eoFill: function
Thanks for investigating this!
I opened a moderately complex file [1] and it had 19200 fills. The overhead
in ms then becomes
enumboolean
Firefox .5 .25
Safari.9 .6
Chrome 1.1 8
Opera3 1.6
This is assuming that the extra
It seems like your arguments all originate from wanting to support an
asymmetric access relation. Supporting an asymmetric access relation
is a bad idea, and we shouldn't do it.
I understand that Mozilla already has technology for implementing an
asymmetric access relation and that you're using
On Wed, Jan 9, 2013 at 10:27 AM, Dean Jackson d...@apple.com wrote:
On 09/01/2013, at 4:08 PM, Dirk Schulze dschu...@adobe.com wrote:
On Jan 8, 2013, at 9:35 AM, Rik Cabanier caban...@gmail.com wrote:
I looked at pdf2js which is using this fillRule property. As I
expected,
On Thu, Jan 3, 2013 at 7:46 PM, Gregg Tavares g...@google.com wrote:
On Tue, Dec 11, 2012 at 9:04 AM, Ian Hickson i...@hixie.ch wrote:
On Tue, 11 Dec 2012, Gregg Tavares (社ç~T¨) wrote:
discussion seems to have died down here but I'd like to bring up
another
issue
In WebGL land
On Jan 9, 2013, at 11:42 AM, Rik Cabanier
caban...@gmail.commailto:caban...@gmail.com wrote:
On Wed, Jan 9, 2013 at 10:27 AM, Dean Jackson
d...@apple.commailto:d...@apple.com wrote:
On 09/01/2013, at 4:08 PM, Dirk Schulze
dschu...@adobe.commailto:dschu...@adobe.com wrote:
On Jan 8,
On Wed, 9 Jan 2013, Stephen White wrote:
Right now by 2d canvases are effectively single buffered. At the
appropriate time a copy of the canvas is made and passed to the
compositor. This copy is slow, especially on mobile.
Currently, to lower the VRAM footprint and improve
On 1/9/13 2:30 PM, Adam Barth wrote:
As a consequence, I would recommend that you do not use asymmetric
access relations in features that you would like other browser vendors
to implement in the future.
Browsers have asymmetric access relations all the time; they just have
some of the code
On Wed, Jan 9, 2013 at 2:50 PM, Stephen White senorbla...@chromium.orgwrote:
Currently, to lower the VRAM footprint and improve performance, we don't do
a copy in 2d canvas. We temporarily transfer ownership of the texture to
the compositor at commit time, and block the renderer until the
On 1/9/13 3:12 PM, Adam Barth wrote:
As I've stated several times on this thread (any many times over the
years), my opinion is that we should not expose an asymmetric access
relation to the web platform.
OK, let's agree to disagree on this one for now.
Do we at least agree that this code:
On Wed, 9 Jan 2013, Adam Barth wrote:
Working through some examples, that seems really strange:
foo();
breakParsing();
bar();
In this case, breakParsing() works a bit like yield() in other
programming languages: first foo() executes, then the event loop
spins, then bar() executes.
On Wed, 9 Jan 2013, James Robinson wrote:
On Wed, Jan 9, 2013 at 11:59 AM, Ian Hickson i...@hixie.ch wrote:
On Wed, 9 Jan 2013, Stephen White wrote:
Right now by 2d canvases are effectively single buffered. At the
appropriate time a copy of the canvas is made and passed to the
On Wed, Jan 9, 2013 at 12:23 PM, Boris Zbarsky bzbar...@mit.edu wrote:
On 1/9/13 3:12 PM, Adam Barth wrote:
As I've stated several times on this thread (any many times over the
years), my opinion is that we should not expose an asymmetric access
relation to the web platform.
OK, let's agree
Thanks for your feedback!
Based on this, I propose the following:
1. create an enum for the winding rule:
enum CanvasWindingRule { nonzero
http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#dom-context-2d-fillrule-nonzero,
evenodd
On Wed, 9 Jan 2013, Adam Barth wrote:
The Document interface (which is what we started this thread discussing)
is never visible across origins and so does not have any of these
complexities.
Actually Document objects can be visible across origins per spec, but none
of their properties ever
On Tue, Jan 8, 2013 at 7:46 AM, Boris Zbarsky bzbar...@mit.edu wrote:
Actually, that's not enough. You have to security-check arguments too.
Otherwise this:
document.createTreeWalker(crossFrameDoc, etc);
would be bad. (Note that right now the DOM spec fails to handle this, which
is
On Wed, Jan 9, 2013 at 1:28 PM, Ian Hickson i...@hixie.ch wrote:
On Wed, 9 Jan 2013, Adam Barth wrote:
The Document interface (which is what we started this thread discussing)
is never visible across origins and so does not have any of these
complexities.
Actually Document objects can be
On Tue, Jan 8, 2013 at 6:32 PM, Dimitri Glazkov dglaz...@chromium.org wrote:
1) For a tree a -- [shadow root] - b -- [shadow root] - c
(where - denotes child-parent relationship and -- denotes
host-root relationship)
2) if an event is dispatched on c
3) where is the event target's adjusted?
On 1/9/13 4:12 PM, Adam Barth wrote:
window.addEventListener.call(otherWindow, click, function() {});
This example does not appear to throw an exception in Chrome. It
appears to just returns undefined without doing anything (except
logging a security error to the debug console).
Hmm. I
On 1/9/13 4:33 PM, Adam Barth wrote:
For what it's worth, that doesn't appear to be necessary for web
compatibility. Any time WebKit would return a Document to a script in
another origin, WebKit returns null instead.
The HTML spec requires that property access on documents use effective
On 1/9/13 4:28 PM, Anne van Kesteren wrote:
You didn't file a bug on this I think.
Yes, because the DOM spec is not the right place to address it, imo.
-Boris
On 1/9/13 5:19 PM, Adam Barth wrote:
Those checks are neither required for compatibility nor security. The
spec might say to perform the checks, but they aren't needed to build
a secure, compatible browser.
OK. So what checks do you believe are required, then? Just effective
script origin
On Wed, 9 Jan 2013, Boris Zbarsky wrote:
On 1/9/13 4:12 PM, Adam Barth wrote:
window.addEventListener.call(otherWindow, click, function() {});
This example does not appear to throw an exception in Chrome. It
appears to just returns undefined without doing anything (except
logging a
On Wed, Jan 9, 2013 at 2:18 PM, Boris Zbarsky bzbar...@mit.edu wrote:
On 1/9/13 4:33 PM, Adam Barth wrote:
For what it's worth, that doesn't appear to be necessary for web
compatibility. Any time WebKit would return a Document to a script in
another origin, WebKit returns null instead.
The
On Fri, Dec 28, 2012 at 8:59 PM, Ian Hickson i...@hixie.ch wrote:
On Mon, 10 Sep 2012, Tab Atkins Jr. wrote:
1. Check out http://www.xanthir.com/etc/railroad-diagrams/example.html
.
See all those boxes full of text in the diagrams? Looks simple, right?
Just a box filled with text, with
On Wed, Jan 9, 2013 at 2:24 PM, Boris Zbarsky bzbar...@mit.edu wrote:
On 1/9/13 5:19 PM, Adam Barth wrote:
Those checks are neither required for compatibility nor security. The
spec might say to perform the checks, but they aren't needed to build
a secure, compatible browser.
OK. So what
Hello!
In WebKit, loading 'iframe sandbox=allow-scripts
src=frame.html/iframe' with a framed document containing
'scriptalert(window.location.origin);/script' alerts the actual
origin of the document, which wasn't what I expected. I'm not sure
what's intended, but I expected that treating the
On Jan 9, 2013, at 2:18 PM, Rik Cabanier caban...@gmail.com wrote:
On Fri, Dec 28, 2012 at 8:59 PM, Ian Hickson i...@hixie.ch wrote:
On Mon, 10 Sep 2012, Tab Atkins Jr. wrote:
1. Check out http://www.xanthir.com/etc/railroad-diagrams/example.html
.
See all those boxes full of text in
On Wed, Jan 9, 2013 at 3:26 PM, Dirk Schulze dschu...@adobe.com wrote:
On Jan 9, 2013, at 2:18 PM, Rik Cabanier caban...@gmail.com wrote:
On Fri, Dec 28, 2012 at 8:59 PM, Ian Hickson i...@hixie.ch wrote:
On Mon, 10 Sep 2012, Tab Atkins Jr. wrote:
1. Check out
Hi,
Thanks Rik for your counter proposal and thanks everyone for helping to
refine it. I am in full agreement that an evenodd or nonzero argument to
the fill() and clip() operations is better than a state property. The only
thing I can think of in favor of the fillRule property that prompted
On Wed, Jan 9, 2013 at 3:56 PM, James Ascroft-Leigh j...@jwal.me.uk wrote:
Hi,
Thanks Rik for your counter proposal and thanks everyone for helping to
refine it. I am in full agreement that an evenodd or nonzero argument to
the fill() and clip() operations is better than a state property.
On Wed, 9 Jan 2013, Adam Barth wrote:
On Wed, Jan 9, 2013 at 1:28 PM, Ian Hickson i...@hixie.ch wrote:
On Wed, 9 Jan 2013, Adam Barth wrote:
The Document interface (which is what we started this thread
discussing) is never visible across origins and so does not have any
of these
On Wed, 9 Jan 2013, Boris Zbarsky wrote:
On 1/9/13 4:33 PM, Adam Barth wrote:
For what it's worth, that doesn't appear to be necessary for web
compatibility. Any time WebKit would return a Document to a script in
another origin, WebKit returns null instead.
The HTML spec requires that
On Wed, 9 Jan 2013, James Graham wrote:
On Wed, 9 Jan 2013, Boris Zbarsky wrote:
On 1/9/13 4:12 PM, Adam Barth wrote:
window.addEventListener.call(otherWindow, click, function()
{});
This example does not appear to throw an exception in Chrome. It
appears to just returns
On Wed, 9 Jan 2013, Anne van Kesteren wrote:
On Tue, Jan 8, 2013 at 7:46 AM, Boris Zbarsky bzbar...@mit.edu wrote:
Actually, that's not enough. You have to security-check arguments
too. Otherwise this:
document.createTreeWalker(crossFrameDoc, etc);
would be bad. (Note that right
Hi,
After all the discussions about winding rules and the new introduced
enumeration for nonzero and even odd, I wonder if the the compositing and
blending modes should be two enumerations as well.
enum CanvasCompositingMode {
source-over,
source-in,
…
}
and
enum
http://www.whatwg.org/specs/web-apps/current-work/multipage/workers.html#creating-workers
doesn't seem to define what happens if there aren't enough resources
to create a separate parallel execution environment.
Would it be legal for a UA to consider this as violating a policy
decision and throw
Adam, thank you for taking the time to put this together. I really
appreciate it. There are lots of things here where we can converge
behavior no matter what happens with other pieces of the platform.
On 1/9/13 5:58 PM, Adam Barth wrote:
Generally speaking, I'd recommend exposing as few
Hi Dirk,
the 'globalCompositeOperation' property takes the same syntax as the css
'mix' so I don't think an enum will work.
Rik
On Wed, Jan 9, 2013 at 6:18 PM, Dirk Schulze dschu...@adobe.com wrote:
Hi,
After all the discussions about winding rules and the new introduced
enumeration for
Ian Hickson, 2013-01-08 18:23 (Europe/Helsinki):
You can do this with anything in HTML, using absolute positioning: set
just one of the coordinates in each direction, and leave the other on
'auto'. As in:
div { position: absolute: bottom: 10em; right: 10em; width: auto;
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