[OpenJDK 2D-Dev] [PATCH] support Mongolian and FVS(Mongolian Free Variation Selector)

[Steven R. Loomis]

There is much discussion about the encoding of Mongolian- see
https://www.unicode.org/L2/topical/mongolian/

Is this discussion taken into account?


On Wed, Jun 20, 2018 at 10:28 AM Phil Race <philip.race at oracle.com> wrote:

> It is not clear to me how this supports Free Variation Selectors for
> Mongolian as claimed.
> Mongolian has its own variation selectors 0X180B-D.
>
> When applied on top of the previous patch, it might .. since with the
> patch below
> Mongolian will then always go through TextLayout, and the harfbuzz
> layout code
> is being updated to support them. But I don't think it will work without
> that patch.
> Is that your understanding ?
>
> Can you turn your "sample" into something that looks like a test (see the
> other patch) and use \UNNNN escapes for all the non-ascii text.
>
> Also bear in mind that adding this does not make Mongolian a "supported
> writing system"
> for Oracle JDK .. the supported writing systems are just a few, even
> though many
> more work just fine.
>
> -phil.
>
>
> On 06/20/2018 12:41 AM, Nakajima Akira wrote:
> > Hi All.
> >
> > Now, SWING does not display Mongolian correctly.
> >
> >  # See "Mongolian Glyph Convergence", etc..
> > http://www.unicode.org/versions/Unicode10.0.0/ch13.pdf#G27803
> >
> >
> > This is patch for support Mongolian and FVS(Mongolian Free Variation
> > Selector).
> >  # This patch is separated from JDK-8187100.
> >
> > I checked on CentOS 7.5 and Windows7 SP1 x64.
> > Patch works properly or not is unknown on other OS(Mac etc..).
> > It will be helpful if person having environment check it.
> >
> > Thanks.
> > Akira Nakajima
> >
> >
> > ====================
> > PATCH
> > ====================
> > diff -r e1b3def12624
> > src/java.desktop/share/classes/sun/font/FontUtilities.java
> > --- a/src/java.desktop/share/classes/sun/font/FontUtilities.java Wed
> > Jun 13 06:35:04 2018 +0200
> > +++ b/src/java.desktop/share/classes/sun/font/FontUtilities.java Wed
> > Jun 13 14:14:08 2018 +0900
> > @@ -299,6 +299,9 @@
> >          else if (code <= 0x17ff) { // 1780 - 17FF Khmer
> >              return true;
> >          }
> > +        else if (code <= 0x18af) { // 1800 - 18AF Mongolian
> > (including FVS)
> > +            return true;
> > +        }
> >          else if (code < 0x200c) {
> >              return false;
> >          }
> >
> >
> >
> > ====================
> > Sample (mongol2.java)
> > ====================
> > import javax.swing.*;
> > import java.awt.Font;
> > import java.awt.BorderLayout;
> >
> > public class mongol2 extends JFrame{
> >
> >   public static void main(String[] args) {
> >     mongol2 frame = new mongol2();
> >
> >     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
> >     frame.setBounds(10, 10, 650, 700);
> >     frame.setVisible(true);
> >   }
> >
> >   mongol2() {
> >     String family = "Mongolian Art";
> >
> >     String str[] = new String[9];
> >     str[0] = new String("ᠤ ᠷ ᠲ ᠤ   --> ᠤᠷᠲᠤ (urtu)\n");
> >     str[1] = new String("ᠣ ᠷ ᠳ ᠤ   --> ᠣᠷᠳᠤ (ordu)\n");
> >     str[2] = new String("ᠡ ᠨ ᠳ ᠡ   --> ᠡᠨᠳᠡ (ende)\n");
> >     str[3] = new String("ᠠ ᠳ ᠠ     --> ᠠᠳᠠ  (ada)\n");
> >     str[4] = new String("ᠠ ᠪ ᠤ   --> ᠠᠪᠤ (abu)\n");
> >     str[5] = new String("ᠣ ᠳ ᠣ   --> ᠣᠳᠣ (odo)\n");
> >     str[6] = new String("ᠡ ᠨ ᠡ   --> ᠡᠨᠡ (ene)\n");
> >     str[7] = new String("ᠭ ᠠ  --> ᠭᠠ (gal)\n");
> >     str[8] = new String("ᠭ᠋ ᠠ  --> ᠭ᠋ᠠ (gal+U+180B)\n");
> >
> >     String str_for_area = new String("");
> >     for (int i=0; i<9; i++) {
> >       str_for_area += str[i].toString();
> >     }
> >
> >     JTextArea area = new JTextArea(str_for_area, 9, 10);
> >     area.setFont(new Font(family, 0, 48));
> >
> >     JPanel p = new JPanel();
> >     p.add(area);
> >     getContentPane().add(p, BorderLayout.CENTER);
> >   }
> > }
> >
> >
> > --------------------------------------
> > Company: NTT Comware Corporation
> > Name: Akira Nakajima
> > E-Mail: nakajima.akira at nttcom.co.jp
> > --------------------------------------
>
>
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