X11 Libraries (X11 package) Source code Contents Index

Graphics.X11.Xlib.Font Portability portable Stability provisional Maintainer libraries@haskell.org

Description

A collection of FFI declarations for interfacing with Xlib Fonts.

Synopsis

type Glyph = Word16 queryFont :: Display -> Font -> IO FontStruct fontFromGC :: Display -> GC -> IO Font loadQueryFont :: Display -> String -> IO FontStruct freeFont :: Display -> FontStruct -> IO () data FontStruct fontFromFontStruct :: FontStruct -> Font ascentFromFontStruct :: FontStruct -> Int32 descentFromFontStruct :: FontStruct -> Int32 type CharStruct = (CInt, CInt, CInt, CInt, CInt) textExtents :: FontStruct -> String -> (FontDirection, Int32, Int32, CharStruct) textWidth :: FontStruct -> String -> Int32

Documentation

type Glyph = Word16

queryFont :: Display -> Font -> IO FontStruct

interface to the X11 library function XQueryFont().

fontFromGC :: Display -> GC -> IO Font

interface to the X11 library function XGetGCValues().

loadQueryFont :: Display -> String -> IO FontStruct

interface to the X11 library function XLoadQueryFont().

freeFont :: Display -> FontStruct -> IO ()

interface to the X11 library function XFreeFont().

data FontStruct

pointer to an X11 XFontStruct structure Instances Data FontStruct Eq FontStruct Ord FontStruct Show FontStruct Typeable FontStruct

fontFromFontStruct :: FontStruct -> Font

ascentFromFontStruct :: FontStruct -> Int32

descentFromFontStruct :: FontStruct -> Int32

type CharStruct = (CInt, CInt, CInt, CInt, CInt)

textExtents :: FontStruct -> String -> (FontDirection, Int32, Int32, CharStruct)

interface to the X11 library function XTextExtents().

textWidth :: FontStruct -> String -> Int32

interface to the X11 library function XTextWidth().

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