Potato.Flow.RenderCache

Documentation

toPoint :: LBox -> Int -> XY

input index must be contained in the box

toIndex :: LBox -> XY -> Int

input XY point must be contained in the box

toIndexSafe :: LBox -> XY -> Maybe Int

same as above but does bounds checking

type MWidePChar = (Int8, PChar)

WidePChar represents part of a PChar that the Int8 parameter is offset from where the PChar originates from, so for example 😱 <- PChar 01 <- Int8 offset parameter

• 1 value for offset means there is no character in the space, the PChar value is ignored in this case

emptyMWidePChar :: MWidePChar

data PreRender

the LBox may exceed the logical bounding box of the object that is being represented if that object contains wide chars

Constructors

PreRender (Vector MWidePChar) LBox

Instances

Show PreRender

Defined in Potato.Flow.RenderCache

Methods

showsPrec :: Int -> PreRender -> ShowS

show :: PreRender -> String

showList :: [PreRender] -> ShowS

emptyPreRender :: PreRender

preRender_lookup :: HasCallStack => PreRender -> XY -> MWidePChar

data OwlItemCache

Constructors

OwlItemCache_Line LineAnchorsForRender PreRender

OwlItemCache_Generic PreRender

Instances

Show OwlItemCache

Defined in Potato.Flow.RenderCache

Methods

showsPrec :: Int -> OwlItemCache -> ShowS

show :: OwlItemCache -> String

showList :: [OwlItemCache] -> ShowS

owlItemCache_preRender :: OwlItemCache -> Maybe PreRender

newtype RenderCache

Constructors

RenderCache

Fields

• unRenderCache :: REltIdMap OwlItemCache

Instances

Show RenderCache

Defined in Potato.Flow.RenderCache

Methods

showsPrec :: Int -> RenderCache -> ShowS

show :: RenderCache -> String

showList :: [RenderCache] -> ShowS

emptyRenderCache :: RenderCache

renderCache_clearAtKeys :: RenderCache -> [REltId] -> RenderCache

renderCache_lookup :: RenderCache -> REltId -> Maybe OwlItemCache

makePreRender :: forall a. HasOwlTree a => a -> SEltDrawer -> PreRender