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RE: [ft] WG: Character Width Problem

From: Jan Slupski
Subject: RE: [ft] WG: Character Width Problem
Date: Thu, 6 Oct 2005 16:23:16 +0200 (CEST)

On Thu, 6 Oct 2005, Anton Zemlyanov wrote:


FreeType is a font (face) rendering engine, not a word processor. This is for FT user to 
build a text line from the individual glyphs. For TT fonts, "char width" is 
useless because chars (Glyphs) can be overlapped. Width of a string is not a sum of 
widthes of individual chars. I use the following method:

StringWidth = sum(AdvanceWidths) - LeftBearingFirstChar - RightBearingLastChar;

You may also take kerning distances between chars into equation.
eg. usually: advanceWidth('VA') < advanceWidth('V') + advanceWidth('A')

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