¤ Graphic

Graphics

Types

class Graphic a where
   measureGraphicK :: FudgetIO k => a -> GCtx -> Cont (k i o) MeasuredGraphics
   measureGraphicListK :: FudgetIO k => [a] -> GCtx -> Cont (k i o) MeasuredGraphics
instance Graphic MeasuredGraphics
instance Graphic Char
instance Graphic Int
instance Graphic Integer
instance Graphic Bool
instance Graphic Float
instance Graphic Double
instance (Graphic a, Graphic b) => Graphic (a  b)
instance Graphic a => Graphic (Maybe a)
instance Graphic BitmapFile
instance Graphic leaf => Graphic (Drawing annot leaf)
instance Graphic FixedDrawing
instance Graphic FixedColorDrawing
instance Graphic ImageString
instance Graphic FlexibleDrawing
instance Graphic Gfx
instance Graphic PixmapImage
instance Graphic (Item a)
instance Graphic SmileyMode

Description

The class Graphic collects types whose values have graphical representations (just like the class Show collects types whose values have textual representations). Most basic types belong to this class. The library also provides some new types for graphics.

The standard way to make a new type T an instance of the Graphic class is to define a function, draw_T say, that convert values of type T into a type that is already in the Graphic class and then define the instance in the following way:

  instance Graphic T where
     measureGraphicK = measureGraphicK . draw_T

The class methods are normally not used directly by the application programmer in any other way.

See Also

Types for graphics: Drawing, FixedDrawing, FlexibleDrawing, BitmapFile.

Fudgets that display graphics: hyperGraphicsF, displayF, labelF, buttonF, ...