Wumpus.Basic.Graphic.Query

Querying the Drawing Context.

Documentation

textAttr :: (Applicative m, DrawingCtxM m) => m (RGBi, FontAttr)

withTextAttr :: (Applicative m, DrawingCtxM m) => (RGBi -> FontAttr -> a) -> m a

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

strokeAttr :: (Applicative m, DrawingCtxM m) => m (RGBi, StrokeAttr)

withStrokeAttr :: (Applicative m, DrawingCtxM m) => (RGBi -> StrokeAttr -> a) -> m a

fillAttr :: (Applicative m, DrawingCtxM m) => m RGBi

withFillAttr :: (Applicative m, DrawingCtxM m) => (RGBi -> a) -> m a

borderedAttr :: (Applicative m, DrawingCtxM m) => m (RGBi, StrokeAttr, RGBi)

withBorderedAttr :: (Applicative m, DrawingCtxM m) => (RGBi -> StrokeAttr -> RGBi -> a) -> m a

lineWidth :: (Applicative m, DrawingCtxM m) => m Double

fontSize :: (Applicative m, DrawingCtxM m) => m Int

markHeight :: (Applicative m, DrawingCtxM m, FromPtSize u) => m u

The mark height is the height of a lowercase letter in the current font.

Arrowheads, dots etc. should generally be drawn at the mark height.

markHalfHeight :: (Applicative m, DrawingCtxM m, Fractional u, FromPtSize u) => m u

lineSpacing :: (Applicative m, DrawingCtxM m, Fractional u) => m u

monoCharWidth :: (Applicative m, DrawingCtxM m, FromPtSize u) => m u

monoSpacerWidth :: (Applicative m, DrawingCtxM m, FromPtSize u) => m u

monoTextWidth :: (Applicative m, DrawingCtxM m, FromPtSize u) => Int -> m u

monoTextLength :: (Applicative m, DrawingCtxM m, FromPtSize u) => String -> m u

monoTextHeight :: (Applicative m, DrawingCtxM m, FromPtSize u) => m u

monoNumeralHeight :: (Applicative m, DrawingCtxM m, FromPtSize u) => m u

monoLowerxHeight :: (Applicative m, DrawingCtxM m, FromPtSize u) => m u

Height of a lower case 'x' in Courier.

'x' has no ascenders or descenders.

monoDescenderDepth :: (Applicative m, DrawingCtxM m, FromPtSize u) => m u

monoTextDimensions :: (Applicative m, DrawingCtxM m, Num u, Ord u, FromPtSize u) => String -> m (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 :: (Applicative m, DrawingCtxM m, Fractional u, Ord u, FromPtSize u) => String -> m (Vec2 u)

Vector from baseline left to center