Igor I was wondering the following: ? But TextStyle is not about strikefont?
Stef On 04 Apr 2014, at 02:55, Igor Stasenko <[email protected]> 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.
