Wumpus.Basic.Graphic.DrawingContext

Drawing attributes

** WARNING ** - this module needs systematic naming schemes both for update functions (primaryColour, ...) and for synthesized selectors (e.g. lowerxHeight). The current names will change.

Drawing context

data DrawingContext

Constructors

DrawingContext

Fields

glyph_tables :: BaseGlyphMetrics

fallback_metrics :: GlyphMetrics

stroke_props :: StrokeAttr

font_props :: FontAttr

stroke_colour :: RGBi

fill_colour :: RGBi

line_spacing_factor :: Double

type DrawingContextF = DrawingContext -> DrawingContext

standardContext :: FontSize -> DrawingContext

metricsContext :: FontSize -> BaseGlyphMetrics -> DrawingContext

default_drawing_context :: DrawingContext

Modifiers

Line widths

thick :: DrawingContextF

Set the line width to a thick.

Note this context update is oblivious - operationally the line width is set to exactly 2.0.

ultrathick :: DrawingContextF

thin :: DrawingContextF

Line caps

capButt :: DrawingContextF

capRound :: DrawingContextF

capSquare :: DrawingContextF

Line joins

joinMiter :: DrawingContextF

joinRound :: DrawingContextF

joinBevel :: DrawingContextF

Dash Pattern

dashPattern :: DashPattern -> DrawingContextF

unit_dash_pattern :: DashPattern

phase :: Int -> DashPattern -> DashPattern

dphase :: Int -> DashPattern -> DashPattern

doublegaps :: DashPattern -> DashPattern

doubledashes :: DashPattern -> DashPattern

Font properties

fontsize :: Int -> DrawingContextF

fontface :: FontFace -> DrawingContextF

Font / mark drawing size

doublesize :: DrawingContextF

Set the font size to double the current size, note the font size also controls the size of dots, arrowsheads etc.

halfsize :: DrawingContextF

Set the font size to half the current size, note the font size also controls the size of dots, arrowsheads etc.

As fontsize is an integer this is not exact - half size of 15pt type is 7pt.

Colour

swapColours :: DrawingContextF

bothStrokeColour :: DrawingContextF

bothFillColour :: DrawingContextF

strokeColour :: RGBi -> DrawingContextF

fillColour :: RGBi -> DrawingContextF

Glyph metrics

withFontMetrics :: (GlyphMetrics -> PtSize -> u) -> DrawingContext -> u