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List: freetype
Subject: Re: [ft] Rendering chinese characters
From: suzuki toshiya <mpsuzuki () hiroshima-u ! ac ! jp>
Date: 2012-06-27 10:43:42
Message-ID: 4FEAE3DE.2050208 () hiroshima-u ! ac ! jp
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Unfortunately, the fonts under liberated license covering
non-BMP Hanzi are few.
One of the exception would be Hanazono Mincho:
http://fonts.jp/hanazono/
(although the beginning of the page is in Japanese,
you can find English note at the end of the page).
Their type design of Ext B block might be slightly
different from the expected design in China, Taiwan, etc.
So co-using it with Ming typeface could show some
inconsistency.
Also, the font is only Mincho (SongTi-like typeface),
so it would not be appropriate for the low resolution
monochrome device.
Another hopeful project would be Wen Quan Yi, but their
non-BMP glyph resources seem to has just begun.
http://wenq.org/
I'm waiting for their next release...
Regards,
mpsuzuki
daya.k58@wipro.com wrote:
> suzuki san,
>
> I tried that ftview command..
> my font file does not support non-bmp characters....
> Please suggest me some font file which support non bmp characters if u know....
> Thanks a lot for ur help........
>
>
>
> Regards,
> Daya
>
> ________________________________________
> From: suzuki toshiya [mpsuzuki@hiroshima-u.ac.jp]
> Sent: Tuesday, June 26, 2012 4:13 PM
> To: Daya Devi K (WT01 - Product Engineering Services)
> Cc: freetype@nongnu.org
> Subject: Re: [ft] Rendering chinese characters
>
> Hi,
>
> At present, ftview does not receive UCS codepoints via hexadecimal expression.
> But, as you already checked that FT_Get_Char_Index() fails for non-BMP character,
> what you should try is NOT the search a character by the character codepoint.
> Searching a character by some codepoint always invokes the FT_Get_Char_Index().
> So it does not give any new information. What you should try is
> 1) the font has non-BMP cmap (mapping table from character codepoint to glyph \
> index), or not? 2) if non-BMP cmap is included, what kind of glyphs are included in \
> the font?
> To check 1), please try "ftdump".
> In the case of BMP-only font, the result would finish like:
>
> [...]
> charmaps
> 0: platform 1, encoding 0, language 0
> 1: platform 3, encoding 1, language 0 (active)
>
> It means, platform 3 (=Microsoft) encoding 1 (=UCS2), so no mapping tables for
> non-BMP characters are included. There is no way to show non-BMP character with
> this font (even if the font producer inserts any glyph, we cannot know that it
> is related with non-BMP character).
>
> In the case of not-BMP-only font, the result would finish like:charmaps
> [...]
> 0: platform 0, encoding 3, language 0
> 1: platform 0, encoding 4, language 0
> 2: platform 1, encoding 0, language 0
> 3: platform 3, encoding 1, language 0
> 4: platform 3, encoding 10, language 0 (active)
>
> You can find that there is UCS4 cmap (platform=3, encoding=10), so there might
> be some non-BMP character.
>
> ---
>
> After knowing the font includes non-BMP character, please show the glyphs in
> the font with ftview, and push "F12" key endlessly until the end of the glyph
> index. When you reached the end of the glyph index, push "F7" key to back 10
> glyph index, and search the last CJK ideograph - you may be able to guess the
> coverage of CJK ideographs, because huge CJK fonts including non-BMP characters
> often order their glyphs by UCS codepoint at the quite large glyph index.
>
> Regards,
> mpsuzuki
>
>
>
>
> daya.k58@wipro.com wrote:
> > Hi mpsuzuki,
> > using ftview ,I m able to see BMP characters,But my intention is to display \
> > chinese characters in non-BMP plane.......
> > when I give the following command
> > ftview -m '豈' font ming.ttf ,I m able to display the character as this \
> > character belongs BMP plane... ftview -m 'text' fontfile
> > In ftview ,is there any option to give 'unicode point' as argument?
> > (because in the place of text in ftview command ,I have to copy the equivalent \
> > character of 0x00027267,which I am not able to.....I m able copy only squares!!! \
> > )
> > Thanks in adv...............
> >
> > Thanks& Regards,
> > Daya
> >
> >
> >
> >
> > ________________________________________
> > From: suzuki toshiya [mpsuzuki@hiroshima-u.ac.jp]
> > Sent: Tuesday, June 26, 2012 1:06 PM
> > To: Daya Devi K (WT01 - Product Engineering Services)
> > Cc: freetype@nongnu.org
> > Subject: Re: [ft] Rendering chinese characters
> >
> > In addition, if you're working on Unix like systems, please try "ftview" command.
> > It will show the glyphs in the font without consideration if they are accessible \
> > via some character code, so it might be helpful to know if the font supports \
> > non-BMP characters.
> > Regards,
> > mpsuzuki
> >
> > suzuki toshiya wrote:
> > > Hi,
> > >
> > > Basically, if glyph index returned by FT_Get_Char_Index() is zero,
> > > the font is expected to lack the glyph for the character code passed
> > > to FT_Get_Char_Index().
> > >
> > > Regards,
> > > mpsuzuki
> > >
> > > daya.k58@wipro.com wrote:
> > > > Hi,
> > > >
> > > > I don't know how to check whether a character is present in the font file or \
> > > > not.... pls anyone let me know the way to find whether a character is present \
> > > > in the font file or not....
> > > >
> > > > Thanks and regards,
> > > > Daya
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > -----Original Message-----
> > > > From: suzuki toshiya [mailto:mpsuzuki@hiroshima-u.ac.jp]
> > > > Sent: Tuesday, June 26, 2012 12:14 PM
> > > > To: Daya Devi K (WT01 - Product Engineering Services)
> > > > Cc: freetype@nongnu.org
> > > > Subject: Re: [ft] Rendering chinese characters
> > > >
> > > > Hi,
> > > >
> > > > Are you sure that your font file (I don't know what it is) include the \
> > > > character for +0x00027267? If you are sure, how you have checked it?
> > > >
> > > > Regards,
> > > > mpsuzuki
> > > >
> > > > daya.k58@wipro.com wrote:
> > > > > Hi,
> > > > >
> > > > > I m using the following piece of code for rendering the Chinese character \
> > > > > and the font file is ming_uni.ttf:
> > > > > {
> > > > > FT_Library library;
> > > > > FT_GlyphSlot slot;
> > > > > FT_Face face;
> > > > > FT_Init_FreeType( &library );
> > > > > FT_New_Face( library,"/usr/local/share/ming.ttf",0,&face);
> > > > > FT_Set_Char_Size(temp_ptr->face,16*64,16*64 ,500,500 );
> > > > > slot = face->glyph;
> > > > > glyph_index = FT_Get_Char_Index(face,0x00027267);
> > > > > printf("Glyph index is %d is \n",glyph_index);
> > > > > }
> > > > >
> > > > > when I printed the glyph_index ,it is zero...bt if I use 0xF900 instead of \
> > > > > 0x00027267 ,I m able to see the Chinese character.. My doubt is why the \
> > > > > FT_Get_Char_Index does not display Chinese character for Unicode value \
> > > > > 0x00027267? Is that the problem of font file ,I m using?
> > > > > Why I m nt able to get the glyph (or charmap) of 0x00027267 and similar \
> > > > > values?
> > > > > Please help me..........
> > > > > Thanks in adv.
> > > > >
> > > > >
> > > > > Regards,
> > > > > Daya
> > > > >
> > > > >
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