[LazFreeType] How to read information from a font file?

[felipemdc]

It would be great to have an example on that, thanks

[zeljko]

I guess that such code exists in fontconfig source.

[felipemdc]

But LCL-CustomDrawn uses non-native text in multiple operating systems where fontconfig does not exist (Windows, Mac OS X, Android). I was hoping that circular would know the answer.

[felipemdc]

Ok, so I will answer my own question. Guiliano Colla found out how to do this and he sent me a patch, and here it is:

http://svn.freepascal.org/cgi-bin/viewvc.cgi/trunk/lcl/interfaces/customdrawn/customdrawnproc.pas?root=lazarus&r1=35879&r2=35878&pathrev=35879

I think that the most important part is:

TT_Get_Name_String(AFace,J,NameString,NameLen);

Which is part of LazFreeType. But in general the entire routine there is a nice example of how to extract font information with LazFreeType

[zeljko]

I didn't mean that you'll use fontconfig, but to see in source how it is extracted.

[circular]

There are now properties Ascent, Descent, LineSpacing and FullLineHeight in TFreeTypeFont.

About the name, apparently, it can be in many languages. Maybe we can use English name only for now.

[circular]

I've found how to get names. Soon I will put here a test program that reads a directory of fonts.

[circular]

Here is a test program that allows to explore a directory of fonts. This mechanism will be directly included in LazFreeType later.

Note : you need to use the second patch of LazFreeType.

[circular]

Here is an updated version.