Wumpus.Basic.Graphic.Query

Querying the Drawing Context.

Documentation

textAttr :: DrawingF (RGBi, FontAttr)

withTextAttr :: (RGBi -> FontAttr -> a) -> DrawingF a

Because textAttr is so commonly used here is a functional version that avoids tupling.

strokeAttr :: DrawingF (RGBi, StrokeAttr)

withStrokeAttr :: (RGBi -> StrokeAttr -> a) -> DrawingF a

fillAttr :: DrawingF RGBi

withFillAttr :: (RGBi -> a) -> DrawingF a

borderedAttr :: DrawingF (RGBi, StrokeAttr, RGBi)

withBorderedAttr :: (RGBi -> StrokeAttr -> RGBi -> a) -> DrawingF a

lineWidth :: DrawingF Double

fontSize :: DrawingF Int

markHeight :: FromPtSize u => DrawingF u

A Mark is consider to be the height of a lowercase letter in the current font.

Note better to use xlowerHeight

lineSpacing :: Fractional u => DrawingF u

monoCharWidth :: FromPtSize u => DrawingF u

monoSpacerWidth :: FromPtSize u => DrawingF u

monoTextWidth :: FromPtSize u => Int -> DrawingF u

monoTextLength :: FromPtSize u => String -> DrawingF u

monoTextHeight :: FromPtSize u => DrawingF u

monoNumeralHeight :: FromPtSize u => DrawingF u

monoLowerxHeight :: FromPtSize u => DrawingF u

Height of a lower case 'x' in Courier.

'x' has no ascenders or descenders.

monoDescenderDepth :: FromPtSize u => DrawingF u

monoTextDimensions :: (Num u, Ord u, FromPtSize u) => String -> DrawingF (u, u)

Query the dimensions of the text using the current font size but using metrics derived from Courier.

Note - the width will generally be a over-estimate for non-monospaced fonts.

monoVecToCenter :: (Fractional u, Ord u, FromPtSize u) => String -> DrawingF (Vec2 u)

Vector from baseline left to center