Re: 回复： About freetype2 bitmap strike

[suzuki toshiya]

I'm unsure whether this is really the code that you tested.
Attached test.c is not buildable, because of following problems.

1) test.c has no main() function.

2) test.c includes no header files. no freetype header file, no standard C 
header file (like stdint.h to use uint16_t)

3) test.c is not self-standing code, it calls some external functions or 
macros. _T(), ff_convert() are not defined.

Regards,
mpsuzuki

On 2024/12/05 15:02, 大牙开心就好 wrote:
> Hi,
>
> The attachment contains the test code and font.
>
> test result：
> [https://mail.qq.com/cgi-bin/viewfile?f=0C30B02BD5A828EE573EEE1B2A7B2299C21365D1FC48CD6EB08B080841116823DD236A8D7AAECFDE201B9EFA152076E4F79A612F8E0F55779029CF61F0E82AE30CFBB714D0C45DF7FFBB6C91810768F213B994676C239C7253CDD6CF4B0F2E24&mailid=ZL0105-%7EHziUtiZLC9%7EHiVCO9t%7EDec&sid=X9tNkBof7u28NA9o&net=1069200670]
>
> I don't know if this is a bug or some other reason, I hope to get your 
> help,Thank you.
>
> ________________________________
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> 大牙开心就好
> 990087812@qq.com
>
>
>
> ------------------ 原始邮件 ------------------
> 发件人: "freetype@nongnu.org" <mpsuzuki@hiroshima-u.ac.jp>;
> 发送时间: 2024年12月5日(星期四) 中午1:25
> 收件人: "freetype"<freetype@nongnu.org>;
> 抄送: "大牙开心就好"<990087812@qq.com>;
> 主题: Re: About freetype2 bitmap strike
>
> Hi,
>
> Could you post your testing code written in C?
> (please do not copy & paste it in your HTML email, please post as an attachment)
>
> Regards,
> mpsuzuki
>
> P.S.
> I hope you can reply to freetype@nongnu.org.
> If you reply to me privately with no explanation why it is private, I will post 
> it to the public list.
> Thanks in advance!
>
> On 2024/12/05 12:38, 大牙开心就好 via FreeType users wrote:
> > Hi:
> > &nbsp; &nbsp; I use freetype2 to retrieve the bitmap data embedded in the font, 
> > Using FT_LOAD_SBIS_ONLY.
> > In the "simsun.ttf" font, some characters can be obtained while others cannot.
> > Use "FontForge" software to view that these characters all contain bitmap data.
> >
> >
> > for example:
> > &nbsp; &nbsp; characters "¤", its Unicode is 0x00A4，The bitmap data obtained 
> > using freetype2 is consistent with the bitmap data viewed using FontForge software.
> > As shown in the following figure.
> >
> > &nbsp; &nbsp;
> >
> >
> >
> >
> >
> >
> >
> > &nbsp; &nbsp; But, characters "A", its Unicode is 0x0041，Freetype2 cannot 
> > obtain bitmap data. But using FontForge software, it can be seen that there is bitmap data.
> >
> > As shown in the following figure.
> >
> >
> >
> >
> >
> >
> >
> >
> > My test code：
> >
> > int ft_error;
> >
> > FT_Select_Size(face, 4);
> >
> > ft_error = FT_Load_Char(face, 0x00A4, FT_LOAD_RENDER | FT_LOAD_SBITS_ONLY | 
> > FT_LOAD_MONOCHROME);
> >
> > ft_error is 0;
> >
> > &nbsp;
> >
> > ft_error = FT_Load_Char(face, 0x0041, FT_LOAD_RENDER | FT_LOAD_SBITS_ONLY | 
> > FT_LOAD_MONOCHROME);
> >
> > ft_error is 6;
> >
> >
> >
> >
> > &nbsp; &nbsp; I found that the error occurred in tt_stit_decoder_load_image 
> > function and returns NoBitmap.
> >
> > But use "FontForge" software open the "simsun.ttf" and view characters "A",We 
> > can see that it has bitmap data.
> >
> > I don't know if this is a bug or some other reason, I hope to get your 
> > help,Thank you.
> >
> >
> >
> >
> > My freetype2 version is V2.13.0, and the attachment is the "simsun. ttf" font.
> >
> >
> >
> >
> >
> >
> >
> > 大牙开心就好
> > 990087812@qq.com
> >
> >
> >
> > &nbsp;