Igor

I was wondering the following: ? But TextStyle is not about strikefont?

Stef

On 04 Apr 2014, at 02:55, Igor Stasenko <siguctua@gmail.com> wrote:

> Okay, i think i got it..
>
> Here is what happens:
> - the font size is usually specified in points, not x@y points, but typographical points,
> which is
> 1/72 inch
>
>
> TextStyle pointsToPixels: 14
>
> TextStyle pointsToPixels: 14 => 18.666666666666668
>
> pointsToPixels: points
> �� �� ^points * self pixelsPerInch / 72.0
>
>
> but in Athens, i , stupid idiot, completely forgot about that,
> and use point size directly, to scale up font ..
> but the point is that this scaling performed in font units (EMs).
>
> so, to actually scale font correctly, i must use same TextStyle pointsToPixels: ..
> as Freetype package using..
>
> there is one caveat, that if you really want to see exactly , say 16 points sized font on your screen,
> it is not possible without knowing the display resolution - how many pixels in one inch (hence
> #pixelsPerInch ).
> Unfortunately, our VMs don't give us a way to determine DPI of display..
> and so, it is always 96 :/
>
> pheww....
>
> fromFreetypeFont: aFont cairoFace: face
> .....
>
> �� - ��fontMatrix scaleBy: aFont pointSize.
>
> ��+ ��fontMatrix scaleBy: (TextStyle pointsToPixels: aFont pointSize).
>
> problem solved ... (i hope) :)
>
> --
> Best regards,
> Igor Stasenko.