[Font] Getting font folder on all platforms

[Flamaros]

On Tuesday, 15 October 2013 at 23:10:32 UTC, Flamaros wrote:
> On Friday, 6 September 2013 at 20:54:53 UTC, Flamaros wrote:
>> On Friday, 6 September 2013 at 16:05:43 UTC, Tourist wrote:
>>> On Thursday, 5 September 2013 at 19:48:07 UTC, Flamaros wrote:
>>>> I am searching the right way to find fonts folder for each 
>>>> platforms (Windows, linux, macOS X)
>>>>
>>>> On Windows it's generally "C:\Windows\Fonts" but a direct 
>>>> access seems brutal, it's certainly expected to retrieve 
>>>> this path by using some register keys?
>>>>
>>>> Is someone know how it works for linux and/or macOS X?
>>>>
>>>> I need to be able to retrieve fastest as possible the right 
>>>> file from the font and family name.
>>>
>>> Windows: call SHGetKnownFolderPath with FOLDERID_Fonts as 
>>> rfid.
>>>
>>> http://msdn.microsoft.com/en-us/library/windows/desktop/bb762188%28v=vs.85%29.aspx
>>
>> Nice, thx.
>>
>> Do you know if there is a table of fonts and there family, or 
>> need open all font file my self?
>
> I need to do some more tests, but scanning the registry seems 
> working under Windows.
> Here is my test code :
>
> string	fontPathFromName(in string name, in Font.Family family = 
> Font.Family.Regular)
> {
>     version(Windows)
>     {
>         import std.windows.registry;
>
>         string	fontPath = "C:/Windows/Fonts/";
>         string	fontFileName;
>         Key		fontKey;
>
>         fontKey = 
> Registry.localMachine().getKey("Software\\Microsoft\\Windows 
> NT\\CurrentVersion\\Fonts");
>
>         if (family == Font.Family.Regular)
>             fontFileName = fontKey.getValue(name ~ " 
> (TrueType)").value_EXPAND_SZ();
>         else if (family == Font.Family.Bold)
>             fontFileName = fontKey.getValue(name ~ " Bold 
> (TrueType)").value_EXPAND_SZ();
>         else if (family == Font.Family.Italic)
>             fontFileName = fontKey.getValue(name ~ " Italic 
> (TrueType)").value_EXPAND_SZ();
>         else if (family == (Font.Family.Bold | 
> Font.Family.Italic))
>             fontFileName = fontKey.getValue(name ~ " Bold 
> Italic (TrueType)").value_EXPAND_SZ();
>         return fontPath ~ fontFileName;
>     }
> }
>
> unittest
> {
>     assert(fontPathFromName("Arial") == 
> "C:/Windows/Fonts/arial.ttf");
>     assert(fontPathFromName("arial") == 
> "C:/Windows/Fonts/arial.ttf");	// Test with wrong case
>     assert(fontPathFromName("Arial", Font.Family.Bold | 
> Font.Family.Italic) == "C:/Windows/Fonts/arialbi.ttf");
> }

I did some progress with fontconfig under linux, I'll try to use 
it for Windows too.