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Graphics.HGL.Draw.Font

Portability | non-portable (requires concurrency)
Stability | provisional
Maintainer | libraries@haskell.org

Description

Text fonts.

Portability notes:

- X11 does not directly support font rotation so `createFont` and `mkFont` always ignore the rotation angle argument in the X11 implementation of this library.
- Many of the font families typically available on Win32 are not available on X11 (and vice-versa). In our experience, the font families courier, helvetica and times are somewhat portable.

Synopsis

data Font
createFont :: Size -> Angle -> Bool -> Bool -> String -> IO Font
deleteFont :: Font -> IO ()
selectFont :: Font -> Draw Font
mkFont :: Size -> Angle -> Bool -> Bool -> String -> (Font -> Draw a) -> Draw a

Documentation
data Font

createFont

:: Size | size of character glyphs in pixels
-> Angle | rotation angle
-> Bool | bold font?
-> Bool | italic font?
-> String | font family
-> IO Font |
Create a font. The rotation angle is ignored if the font is not a "TrueType" font (e.g., a `System` font on Win32).

deleteFont :: Font -> IO ()
Delete a font created with `createFont`.
selectFont :: Font -> Draw Font
Set the font for subsequent text, and return the previous font.
mkFont

:: Size | size of character glyphs in pixels
-> Angle | rotation angle
-> Bool | bold font?
-> Bool | italic font?
-> String | font family
-> (Font -> Draw a) |
-> Draw a |
Generate a font for use in a drawing, and delete it afterwards. The rotation angle is ignored if the font is not a "TrueType" font (e.g., a `System` font on Win32).

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