HTk.Kernel.Geometry

The module Geometry exports basic geometric types and functionality.

Documentation

newtype Distance

The Distance datatype - general representation of distances in HTk.

Constructors

Distance Int

Instances

Enum Distance

Internal.

Eq Distance

Integral Distance

Internal.

Num Distance

Internal.

Ord Distance

Read Distance

Internal.

Real Distance

Internal.

Show Distance

Internal.

GUIValue Distance

Internal.

HasIndex Editor i BaseIndex => HasIndex Editor i (Distance, Distance)

Internal.

HasInsertionCursorIndexGet Editor (Distance, Distance)

You can get the position of the insertion cursor of an editor widget.

HasSelectionBaseIndexRange Editor (Distance, Distance)

You can select a text range inside an editor widget.

HasSelectionBaseIndex Editor ((Distance, Distance), (Distance, Distance))

You can select a text range inside an editor widget.

HasIndex Editor (Distance, Distance) BaseIndex

A pair of line and character is a valid index for an editor widget.

GUIValue [(Distance, Distance)]

Internal.

GUIValue [Distance]

Internal.

GUIValue (Distance, Distance)

Internal.

GUIValue (Distance, Distance, Distance, Distance)

Internal.

type Size = (Distance, Distance)

The Size datatype - a pair of two Distance values.

type Coord = [Position]

The Coord datatype - e.g. representing the coords of a canvas item.

type Position = (Distance, Distance)

The Position - a pair of two Distance values.

type Geometry = (Distance, Distance, Distance, Distance)

The Geometry datatype - normally representing position, width and height.

cm :: Double -> Distance

Conversion from cm to Distance.

pp :: Double -> Distance

Conversion from points to Distance.

mm :: Double -> Distance

Conversion from mm to Distance.

ic :: Double -> Distance

Conversion from inch to Distance.

tocm :: Distance -> Double

Conversion from Distance to cm.

toinch :: Distance -> Double

Conversion from Distance to inch.