[OpenJDK 2D-Dev] Fw: RFR: JDK-8187100: support VariationSelectors(Resend)
Toshio 5 Nakamura
TOSHIONA at jp.ibm.com
Mon Jun 25 17:20:35 UTC 2018
Hi Phil,
In other words, I just misunderstood your suggestion below.
Recent discussions led me correct understanding, and I took this way.
sorry for your confusion.
> For example we could explore having isComplexCharCode return true for
these and
> directing all uses down the layout path ? Then we can maybe remove all
this logic from
> case used by the fast path code.
Toshio Nakamura
----- Forwarded by Toshio 5 Nakamura/Japan/IBM on 2018/06/26 02:09 -----
From: "Toshio 5 Nakamura" <TOSHIONA at jp.ibm.com>
To: Phil Race <philip.race at oracle.com>
Cc: 2d-dev <2d-dev at openjdk.java.net>, "Steven R. Loomis"
<srl at icu-project.org>
Date: 2018/06/23 09:08
Subject: Re: [OpenJDK 2D-Dev] RFR: JDK-8187100: support Variation
Selectors(Resend)
Sent by: "2d-dev" <2d-dev-bounces at openjdk.java.net>
Hi Phil, Steven,
Thank you so much for your support, and sorry for taking your time.
As Akira-san suggested, Harfbuzz has VS capability.
It seems difficult to use its glyph picking up mechanism in this case,
but its layout mechanism we can use. And, I tried to use it.
Regarding default UVS table, if composite fonts keep font slot,
we just need to check whether Base+VS is defined in Non-default UVS table
or not.
When Non-default UVS doesn't have the entry, we always use its default
glyph.
Best regards,
Toshio Nakamura
Inactive hide details for Phil Race ---2018/06/23 07:34:06---Oh .. so this
is doing what I suggested a couple of emails back. IPhil Race ---2018/06/23
07:34:06---Oh .. so this is doing what I suggested a couple of emails back.
If we see a VS we always delegate t
From: Phil Race <philip.race at oracle.com>
To: "Steven R. Loomis" <srl at icu-project.org>
Cc: Toshio 5 Nakamura <TOSHIONA at jp.ibm.com>, 2d-dev
<2d-dev at openjdk.java.net>
Date: 2018/06/23 07:34
Subject: Re: [OpenJDK 2D-Dev] RFR: JDK-8187100: support Variation Selectors
(Resend)
Oh .. so this is doing what I suggested a couple of emails back.
If we see a VS we always delegate to TextLayout ?
Yes, it does simplify the patch a lot and I am perfectly OK with
this approach but I am surprised as, but Toshio was very keen on
having it there without TextLayout being needed .. why the change of
heart ?
But I don't get the removal (skipping) of the Default UVS table ?
-phil.
On 06/22/2018 03:26 PM, Steven R. Loomis wrote:
Phil, does this help:
https://gist.github.com/srl295/a81ec3a8495d53b85f368a7872138e86#file-webrev-02-vs-03-diff
it is a diff between the 02 and 03 versions.
On Fri, Jun 22, 2018 at 2:59 PM Phil Race <
philip.race at oracle.com> wrote:
Please save me time and tell me where I will find the
changes from the .02 version ?
In particular I mean where are the changes associated
with
"Use TextLayout (Harfbuzz) if VS appears." ?
-phil.
On 06/22/2018 12:59 PM, Steven R. Loomis wrote:
Updated webrev:
http://cr.openjdk.java.net/~srl/8187100/webrev.03
- Use TextLayout (Harfbuzz) if VS appears.
- Composite font's behavior was changed to
not change the font by VS.
These changes made the patch so simplified.
- add comment about suggested DejaVu version
On Thu, May 31, 2018 at 3:19 PM Steven R.
Loomis <srl at icu-project.org> wrote:
Updated webrev:
http://cr.openjdk.java.net/~srl/8187100/webrev.01/
On Fri, May 18, 2018 at 9:16 AM, Toshio 5
Nakamura <TOSHIONA at jp.ibm.com> wrote:
Thank you for your review, Phil.
I'm working to handle your points.
Toshio Nakamura
Philip Race <philip.race at oracle.com>
wrote on 2018/05/18 13:39:35:
> From: Philip Race <
philip.race at oracle.com>
> To: Toshio 5 Nakamura <
TOSHIONA at jp.ibm.com>
> Cc: 2d-dev <2d-dev at openjdk.java.net>
> Date: 2018/05/18 13:39
> Subject: Re: [OpenJDK 2D-Dev] RFR:
JDK-8187100: support Variation
> Selectors(Resend)
>
> There's a lot to think about here but
I have some requests to first
> clean up the proposed code to conform
to coding standards.
>
> I see lots of lines > 80 chars.
Please fix
>
> I see if(foo){ and else{ which should
be "if (foo) {" and "else {"
>
> Basically always have a space before
{ and after ) and around "=" and "=="
>
> One line that WAS
> 51 hb_codepoint_t u =
(variation_selector==0) ? unicode :
> variation_selector;
>
> has no spaces around "==" almost
certainly to avoid going over 80 chars.
> Now you've broken the line you can
fix that.
>
> Eliminate all wild card imports and
import exactly what is needed.
> Maybe this is only about the test.
>
> remove what looks like SCCS style
comments on the @test line.
> Make the test simply print a warning
if the person didn't install
> fonts where you expected.
> Why? Because @ignore defaults to ..
not being ignored.
>
> For the JNI methods calls read the
spec and see if calling them may
> throw an exception
>
> I'm looking at sequences like
> env->SetIntArrayRegion(unicodes, 0,
2, tmp);
> 71 env->CallVoidMethod
(font2D,
> sunFontIDs.f2dCharsToGlyphsMID, 2,
unicodes, results);
> 72 env->GetIntArrayRegion
(results, 0, 2, tmp);
> 73 *glyph = tmp[0];
> 74 cleanup:
> 75 if (unicodes != NULL)
env->DeleteLocalRef(unicodes);
> 76 if (results != NULL)
env->DeleteLocalRef(results);
>
> If call GetIntArrayRegion may leave a
pending exception it needs to
> be checked and cleared
> before you make another call.
>
> Look at the performance implications
of things like the extra
> work done now in
FontUtilities.isSimpleChar() and see
how to minimise
> it since it could affect all text
rendering in a way that is measurable
> in at least some way.
>
> I idly wonder if
>
>
> public static boolean
isBaseChar(int charCode){ ...
>
> might be more cleanly or efficiently
implemented with a switch ?
>
> Not sure.
>
> -phil.
>
> On 5/14/18, 1:28 AM, Toshio 5
Nakamura wrote:
> Could someone review our proposal to
support Unicode Variation Selectors?
> > Bug:
https://bugs.openjdk.java.net/browse/JDK-8187100
> > Webrev:
http://cr.openjdk.java.net/~srl/8187100/webrev.00/
>
> Toshio Nakamura
>
> > From: "Steven R. Loomis" <
srl295 at gmail.com>
> > To: 2d-dev <2d-dev at openjdk.java.net
>
> > Date: 2018/05/03 03:27
> > Subject: Re: [OpenJDK 2D-Dev] RFR:
JDK-8187100: support Variation
> > Selectors (Resend)
> > Sent by: "2d-dev" <
2d-dev-bounces at openjdk.java.net>
> >
> > I added a screenshot to
https://bugs.openjdk.java.net/browse/JDK-8187100
> > if anyone wants to see what the
impact of this fix is
> >
> > On Wed, Apr 25, 2018 at 8:39 AM,
Steven R. Loomis <srl295 at gmail.com>
wrote:
> > (Retrying as actual text)
> >
> > Support Unicode Variation
Selectors.
> >
> > Code by my colleague Toshio
Nakamura, I added a simple test, and
> > include a test that was part of JDK
8187100. (Both tests are run manually.)
> >
> > Bug:
https://bugs.openjdk.java.net/browse/JDK-8187100
> > Webrev:
http://cr.openjdk.java.net/~srl/8187100/webrev.00/
> >
> > On 04/08/2018 11:46 PM, Toshio 5
Nakamura wrote:
> > >
> > > Hello
> > >
> > > IBM would like to propose Unicode
Variation Selector[1] capability to AWT
> > > and Swing components.
> > > (This proposal was posted to
i18n-dev first, and I got a suggestion
to
> > > discuss
> > > in 2d-dev.)
> > >
> > > This proposal changed the
following files:
> > >
src/java.desktop/share/classes/sun/font/CMap.java
> > >
src/java.desktop/share/classes/sun/font/CharToGlyphMapper.java
> > >
src/java.desktop/share/classes/sun/font/CompositeGlyphMapper.java
> > >
src/java.desktop/share/classes/sun/font/Font2D.java
> > >
src/java.desktop/share/classes/sun/font/FontRunIterator.java
> > >
src/java.desktop/share/classes/sun/font/FontUtilities.java
> > >
src/java.desktop/share/classes/sun/font/TrueTypeGlyphMapper.java
> > >
src/java.desktop/share/native/common/font/sunfontids.h
> > >
src/java.desktop/share/native/libfontmanager/hb-jdk-font.cc
> > >
src/java.desktop/share/native/libfontmanager/sunFont.c
> > >
src/java.desktop/share/classes/javax/swing/text/DefaultEditorKit.java
> > > 542 lines will be changed.
> > >
> > > There are three parts.
> > > 1) Adding CMap format 14 support
> > > 2) Adding CharsToGlyphs functions
support Variation Selector Sequences
> > > 3) Swing text component's DEL and
BS key operations change
> > >
> > >
> > > How would I go about obtaining a
sponsor?
> > >
> > > [1] _
http://www.unicode.org/versions/Unicode10.0.0/ch23.pdf_
> > > Chapter 23.4 Variation
Selectors
> > >
> > > Best regards,
> > >
> > > Toshio Nakamura
> > > IBM Japan
> >
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