Graphics.Vty.DisplayAttributes

Documentation

data DisplayAttrDiff

difference between two display attributes. Used in the calculation of the operations required to go from one display attribute to the next.

Previously, vty would reset display attributes to default then apply the new display attributes. This turned out to be very expensive: A *lot* more data would be sent to the terminal than required.

Constructors

DisplayAttrDiff

Fields

• styleDiffs :: [StyleStateChange]
• foreColorDiff :: DisplayColorDiff
• backColorDiff :: DisplayColorDiff
• urlDiff :: URLDiff

Instances

Monoid DisplayAttrDiff

Defined in Graphics.Vty.DisplayAttributes

Methods

mempty :: DisplayAttrDiff

mappend :: DisplayAttrDiff -> DisplayAttrDiff -> DisplayAttrDiff

mconcat :: [DisplayAttrDiff] -> DisplayAttrDiff

Semigroup DisplayAttrDiff

Defined in Graphics.Vty.DisplayAttributes

Methods

(<>) :: DisplayAttrDiff -> DisplayAttrDiff -> DisplayAttrDiff

sconcat :: NonEmpty DisplayAttrDiff -> DisplayAttrDiff

stimes :: Integral b => b -> DisplayAttrDiff -> DisplayAttrDiff

Show DisplayAttrDiff

Defined in Graphics.Vty.DisplayAttributes

Methods

showsPrec :: Int -> DisplayAttrDiff -> ShowS

show :: DisplayAttrDiff -> String

showList :: [DisplayAttrDiff] -> ShowS

data StyleStateChange

Style attribute changes are transformed into a sequence of apply/removes of the individual attributes.

Constructors

ApplyStandout

RemoveStandout

ApplyItalic

RemoveItalic

ApplyStrikethrough

RemoveStrikethrough

ApplyUnderline

RemoveUnderline

ApplyReverseVideo

RemoveReverseVideo

ApplyBlink

RemoveBlink

ApplyDim

RemoveDim

ApplyBold

RemoveBold

Instances

Show StyleStateChange

Defined in Graphics.Vty.DisplayAttributes

Methods

showsPrec :: Int -> StyleStateChange -> ShowS

show :: StyleStateChange -> String

showList :: [StyleStateChange] -> ShowS

Eq StyleStateChange

Defined in Graphics.Vty.DisplayAttributes

Methods

(==) :: StyleStateChange -> StyleStateChange -> Bool

(/=) :: StyleStateChange -> StyleStateChange -> Bool

data DisplayColorDiff

Difference between two display color attribute changes.

Constructors

ColorToDefault

NoColorChange

SetColor !Color

Instances

Show DisplayColorDiff

Defined in Graphics.Vty.DisplayAttributes

Methods

showsPrec :: Int -> DisplayColorDiff -> ShowS

show :: DisplayColorDiff -> String

showList :: [DisplayColorDiff] -> ShowS

Eq DisplayColorDiff

Defined in Graphics.Vty.DisplayAttributes

Methods

(==) :: DisplayColorDiff -> DisplayColorDiff -> Bool

(/=) :: DisplayColorDiff -> DisplayColorDiff -> Bool

data URLDiff

Constructors

LinkTo !ByteString

NoLinkChange

EndLink

Instances

Show URLDiff

Defined in Graphics.Vty.DisplayAttributes

Methods

showsPrec :: Int -> URLDiff -> ShowS

show :: URLDiff -> String

showList :: [URLDiff] -> ShowS

Eq URLDiff

Defined in Graphics.Vty.DisplayAttributes

Methods

(==) :: URLDiff -> URLDiff -> Bool

(/=) :: URLDiff -> URLDiff -> Bool

fixDisplayAttr :: FixedAttr -> Attr -> FixedAttr

Given the previously applied display attributes as a FixedAttr and the current display attributes as an Attr produces a FixedAttr that represents the current display attributes. This is done by using the previously applied display attributes to remove the KeepCurrent abstraction.

displayAttrDiffs :: FixedAttr -> FixedAttr -> DisplayAttrDiff

Determines the diff between two display&color attributes. This diff determines the operations that actually get output to the terminal.