Re: Intent to ship: Canvas CSS/SVG filters

[Tantek Çelik]

Awesome and congrats Tobias! -tantek

On Thu, May 26, 2016 at 9:40 AM, Tobias Schneider
 wrote:
> I intend to turn Canvas CSS/SVG filters on by default on all platforms. It
> has been developed behind the canvas.filters.enabled preference. Google's
> Chrome is already shipping this in version 52.
>
> Related bugs:
>
> https://bugzilla.mozilla.org/show_bug.cgi?id=927892
> https://bugzilla.mozilla.org/show_bug.cgi?id=1173545
>
> Specification:
>
> https://html.spec.whatwg.org/multipage/scripting.html#dom-context-2d-filter
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Re: C++11 standard library support enabled on all Tier-1 platforms

[Nathan Froyd]

On Fri, May 27, 2016 at 6:34 AM, Kurt Roeckx  wrote:
> On 2016-05-27 03:50, Nathan Froyd wrote:
>> Given the standard library's pervasive use of exceptions, and our
>> aversion to the same, if you are using a standard library header
>> that's not listed here:
>
> Are there plans to start using C++ exception?  The wiki seems to suggest
> there are plans, but it was last modified in 2008.

There was a discussion about this topic recently that I thought was on
dev-platform, but some searching doesn't turn it up.  The consensus I
remember was that was it was semi-desirable, but auditing all of the
existing code for exception safety was a long, tedious task.  We'd
have to see what the size and runtime penalties looked like as well.

I don't think anybody's planning on tackling this anytime soon.

-Nathan
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Intent to ship: Canvas CSS/SVG filters

[Tobias Schneider]

I intend to turn Canvas CSS/SVG filters on by default on all platforms. It
has been developed behind the canvas.filters.enabled preference. Google's
Chrome is already shipping this in version 52.

Related bugs:

https://bugzilla.mozilla.org/show_bug.cgi?id=927892
https://bugzilla.mozilla.org/show_bug.cgi?id=1173545

Specification:

https://html.spec.whatwg.org/multipage/scripting.html#dom-context-2d-filter
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Re: C++11 standard library support enabled on all Tier-1 platforms

[Benjamin Smedberg]

It used to be that using STL headers not in the approved list would fail to
compile. I don't know whether that mechanism is still turned on or works
correctly.

--BDS

On Fri, May 27, 2016 at 8:24 AM, Josh Matthews 
wrote:

> On 2016-05-26 9:50 PM, Nathan Froyd wrote:
>
>> [CC mobile-firefox-dev and dev-fxos for notes below.]
>>
>> Bug 1246743 (Mac libc++ support) and bug 1273934 (Android libc++
>> support for local development builds) have landed on mozilla-central.
>> This change means that all of our Tier-1 platforms now have a
>> more-or-less conformant C++11 standard library.  We can therefore
>> begin removing a decent amount of code that we required to support
>> pre-C++11 standard libraries and use standard facilities instead.  You
>> are still strongly encouraged to use Gecko-specific data structures
>> (nsTArray ns{C,}String, etc.) in preference to the standard library
>> ones, unless you need to interface with a third-party library.
>>
>> Given the standard library's pervasive use of exceptions, and our
>> aversion to the same, if you are using a standard library header
>> that's not listed here:
>>
>> http://dxr.mozilla.org/mozilla-central/source/config/stl-headers
>>
>> you need to ask for review to get that header added to the list, per
>> policy in that file.
>>
>> This change also means that any non-Tier-1 platforms (FxOS, for
>> instance) that don't provide a C++11 standard library will probably
>> break in very short order as various code is removed from the tree.
>>
>> Developers who work on the C++ side of Firefox for Android are
>> strongly encouraged to upgrade to an r11 NDK; the r10 NDK should work,
>> but test results in the presence of crashes might be slightly wonky.
>>
>> Enjoy!
>> -Nathan
>>
>>
> Do we have any automation that prevents using headers that aren't in the
> list?
>
> Cheers,
> Josh
>
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Re: C++11 standard library support enabled on all Tier-1 platforms

[Nathan Froyd]

On Thu, May 26, 2016 at 10:08 PM, Mike Hommey  wrote:
> On Thu, May 26, 2016 at 09:50:56PM -0400, Nathan Froyd wrote:
>> This change also means that any non-Tier-1 platforms (FxOS, for
>> instance) that don't provide a C++11 standard library will probably
>> break in very short order as various code is removed from the tree.
>
> When do we actively remove support for stlport (which b2g still uses,
> and which is still an option of --with-android-cxx-stl)?

"Soon"?  I'll probably do this next week.

-Nathan
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Re: C++11 standard library support enabled on all Tier-1 platforms

[Josh Matthews]

On 2016-05-26 9:50 PM, Nathan Froyd wrote:

[CC mobile-firefox-dev and dev-fxos for notes below.]

Bug 1246743 (Mac libc++ support) and bug 1273934 (Android libc++
support for local development builds) have landed on mozilla-central.
This change means that all of our Tier-1 platforms now have a
more-or-less conformant C++11 standard library.  We can therefore
begin removing a decent amount of code that we required to support
pre-C++11 standard libraries and use standard facilities instead.  You
are still strongly encouraged to use Gecko-specific data structures
(nsTArray ns{C,}String, etc.) in preference to the standard library
ones, unless you need to interface with a third-party library.

Given the standard library's pervasive use of exceptions, and our
aversion to the same, if you are using a standard library header
that's not listed here:

http://dxr.mozilla.org/mozilla-central/source/config/stl-headers

you need to ask for review to get that header added to the list, per
policy in that file.

This change also means that any non-Tier-1 platforms (FxOS, for
instance) that don't provide a C++11 standard library will probably
break in very short order as various code is removed from the tree.

Developers who work on the C++ side of Firefox for Android are
strongly encouraged to upgrade to an r11 NDK; the r10 NDK should work,
but test results in the presence of crashes might be slightly wonky.

Enjoy!
-Nathan



Do we have any automation that prevents using headers that aren't in the 
list?


Cheers,
Josh
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Re: C++11 standard library support enabled on all Tier-1 platforms

[Kurt Roeckx]

On 2016-05-27 03:50, Nathan Froyd wrote:

Given the standard library's pervasive use of exceptions, and our
aversion to the same, if you are using a standard library header
that's not listed here:


Are there plans to start using C++ exception?  The wiki seems to suggest 
there are plans, but it was last modified in 2008.



Kurt


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Intent to ship: Unprefixed text-align-last

[Xidorn Quan]

In Firefox 49 I intent to ship unprefixed text-align-last.

It has been shipped prefixed for quite a while, and Chrome has shipped this
property unprefixed since about a year ago [1].

Although CSS Text 3 hasn't entered CR stage, this property is considered
stable. Also it has been widely-used according usage count from Chrome [2],
so breaking change to this property could be risky.

Bug to unprefix: https://bugzilla.mozilla.org/show_bug.cgi?id=1039541
Link to standard:
https://drafts.csswg.org/css-text-3/#text-align-last-property

[1]
https://groups.google.com/a/chromium.org/d/msg/blink-dev/3aLXO38uGI0/t9TtzeZInkMJ
[2] https://www.chromestatus.com/metrics/css/popularity#text-align-last


- Xidorn
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