Re: [ft-devel] Text rendering error

[suzuki toshiya]

It seems that the embedded font is MingLiU (1996-, the 2nd
one of the checksum list). Do you think it is worse than
the result for the latest MingLiU (non-tricky version)?

Regards,
mpsuzuki

P.S.
Werner, I'm thinking about the insertion of some debug
messages for tricky font checker for users to help what
is going on.
* trace message when the font is recognized as tricky
* supposed family name when nameless font is recognized as tricky
How do you think of?

It is possible to write separated code for ft2demos, but
tricky font functions are private, so separated code
would include some duplication.

address@hidden wrote:
> Werner and Toshiya-san，
> Could you help check this file? the subpixel rendering effect is not very 
> good for this tricky font。
> I render text use 10 font size， it look very sharp.
> 
> 
> ------------------ Original ------------------
> From:  "suzuki toshiya"<address@hidden>;
> Date:  Fri, Nov 3, 2017 03:21 PM
> To:  "address@hidden"<address@hidden>; "Werner LEMBERG"<address@hidden>;
> Cc:  "address@hidden"<address@hidden>;
> Subject:  Re: [ft-devel] Text rendering error
> 
> Just I've updated the tricky font list!
> 
> By checking the embedded TrueType in PDFs collected
> from the internet, I found several more tricky fonts.
> 
> http://greg.seth.free.fr/ftp/Japanese%20Font%20Collection.pdf
> includes tricky fonts:
> BBJKGJ+DFGothic-EB
> BBLENH+DFGyoSho-Lt
> BBLKIP+DFHSGothic-W5
> BBLNLM+DFHSMincho-W3
> BBMBBC+DFHSMincho-W7
> 
> I added their family names and checksums. About DFHSxxxx
> families, I would post some request for discussion in later.
> 
> Regards,
> mpsuzuki
> 
> suzuki toshiya wrote:
>> All data I've checked are PDFs collected from the internet, so
>> I'm not sure the exact version numbers. However, some subsetted
>> fonts retain the name table (but no version number) with copyright
>> notice, so we can guess when the font is changed to non-tricky.
>>
>>>> <tricky>
>>>> DAWJQA+DFGothic-EB-WIN-RKSJ-H
>>>>                tag cvt  offset 0x00000112 length 0x00000350 checkSum 
>>>> 0x12c3ebb2
>>>>                tag fpgm offset 0x00000462 length 0x000087a7 checkSum 
>>>> 0xb680ee64
>>>>                tag prep offset 0x0001a017 length 0x00000758 checkSum 
>>>> 0xce939563
>> "(c) Copyright DynaLab Inc. 1992-1995": tricky (checksums are same with 
>> 1.pdf)
>>      tag cvt  offset 0x000000bc length 0x00000350 checkSum 0x12c3ebb2
>>      tag fpgm offset 0x0000040c length 0x000087a7 checkSum 0xb680ee64
>>      tag name offset 0x0001b3e8 length 0x000002ad checkSum 0xb7982db8
>>      tag prep offset 0x00011590 length 0x00000758 checkSum 0xce939563
>>
>> "(c) Copyright DynaLab Inc. 1992-1996": non-tricky
>>      tag cvt  offset 0x0000010a length 0x00000008 checkSum 0x00000000
>>      tag fpgm offset 0x00000112 length 0x00000011 checkSum 0xf40ddf13
>>      tag name offset 0x00011b5a length 0x0000018f checkSum 0xbbce71a9
>>      tag prep offset 0x00011ce9 length 0x00000013 checkSum 0x6286ee0a
>>
>> "(c) Copyright DynaComware Corp. 2002": non-tricky
>>      tag cvt  offset 0x00000114 length 0x00000008 checkSum 0x00000000
>>      tag fpgm offset 0x0000011c length 0x00000011 checkSum 0xf40ddf13
>>      tag name offset 0x00011ca8 length 0x00000254 checkSum 0x90c0733e
>>      tag prep offset 0x00008988 length 0x00000013 checkSum 0x6286ee0a
>>
>> "(c) Copyright DynaComware Corp. 2004": non-tricky
>>      tag cvt  offset 0x00000112 length 0x00000350 checkSum 0x12c3ebb2
>>      tag fpgm offset 0x00000462 length 0x000087a7 checkSum 0xb680ee64
>>      tag name offset 0x0001ac62 length 0x000002f1 checkSum 0xbfe60d42
>>      tag prep offset 0x0001af53 length 0x00000758 checkSum 0xce939563
>>
>> "(c) Copyright DynaComware Corp. 2007": non-tricky
>>      tag cvt  offset 0x00000114 length 0x00000008 checkSum 0x00000000
>>      tag fpgm offset 0x0000011c length 0x00000011 checkSum 0xf40ddf13
>>      tag name offset 0x00011adc length 0x00000329 checkSum 0x75e93e7b
>>      tag prep offset 0x00008b48 length 0x00000013 checkSum 0x6286ee0a
>>
>> Regards,
>> mpsuzuki
>>
>>
>> address@hidden wrote:
>>> So, DFGothic-EB(version 2.1 (1997 later)) is not tricky font?
>>>
>>>
>>> ------------------ Original ------------------
>>> From:  "suzuki toshiya"<address@hidden>;
>>> Date:  Thu, Nov 2, 2017 04:16 PM
>>> To:  "Werner LEMBERG"<address@hidden>;
>>> Cc:  "address@hidden"<address@hidden>; "address@hidden"<address@hidden>;
>>> Subject:  Re: [ft-devel] Text rendering error
>>>
>>> Collecting more PDFs, I got a few PDFs including DFGothic-EB
>>> with same checksums! I think DFGothic-EB in 1.pdf have stable
>>> checksum.
>>>
>>> Regards,
>>> mpsuzuki
>>>
>>> suzuki toshiya wrote:
>>>> Dear Werner,
>>>>
>>>> Werner LEMBERG wrote:
>>>>>> Werner and Toshiya-san, i found the base name is
>>>>>> DAWJQA+DFGothic-EB-WIN-RKSJ-H in the pdf file ,
>>>>> I found a `DFGothic-EB-WIN-RKSJ-H' version 2.1 (from 1997) in the
>>>>> internet, which is no longer tricky.  We thus would need an earlier
>>>>> version, which might be difficult to find...
>>>> Yes, I experienced similar. From a few PDFs including embedded
>>>> DFGothic-EB, they are no longer tricky and the checksums are
>>>> different. One of the strange points is that the maxp glyph number
>>>> of tricky DFGothic-EB is greater than non-tricky DFGothic-EB (?_?)
>>>>
>>>> <tricky>
>>>> DAWJQA+DFGothic-EB-WIN-RKSJ-H
>>>>                tag cvt  offset 0x00000112 length 0x00000350 checkSum 
>>>> 0x12c3ebb2
>>>>                tag fpgm offset 0x00000462 length 0x000087a7 checkSum 
>>>> 0xb680ee64
>>>>                tag prep offset 0x0001a017 length 0x00000758 checkSum 
>>>> 0xce939563
>>>>
>>>> <non-tricky>
>>>> IMLFFK+DFGothic-EB-WINP-RKSJ-H-90ms-RKSJ-H
>>>>                tag cvt  offset 0x00009be4 length 0x00000008 checkSum 
>>>> 0x00000000
>>>>                tag fpgm offset 0x00009bec length 0x00000011 checkSum 
>>>> 0xf40ddf13
>>>>                tag prep offset 0x0001291c length 0x00000013 checkSum 
>>>> 0x6286ee0a
>>>> JIMJKA+DFGothic-EB-MP-RKSJ-H-90ms-RKSJ-H
>>>>                tag cvt  offset 0x00000114 length 0x00000008 checkSum 
>>>> 0x00000000
>>>>                tag fpgm offset 0x0000011c length 0x00000011 checkSum 
>>>> 0xf40ddf13
>>>>                tag prep offset 0x00008988 length 0x00000013 checkSum 
>>>> 0x6286ee0a
>>>> MIBVGO+DFGothic-EB
>>>>                tag cvt  offset 0x0000010a length 0x00000008 checkSum 
>>>> 0x00000000
>>>>                tag fpgm offset 0x00000112 length 0x00000011 checkSum 
>>>> 0xf40ddf13
>>>>                tag prep offset 0x00011ce9 length 0x00000013 checkSum 
>>>> 0x6286ee0a
>>>>
>>>>
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