Diagrams.Backend.HsQML.DiagramObj.Commands

As DiagramObj is a Monoid, complex diagrams may be obtained by mappending simple ones together. This module provides functions creating DiagramObjs containing a single command each.

Documentation

save :: DiagramObj ()

Push the current state (style, font, etc) onto the state stack.

restore :: DiagramObj ()

Pop the current state (style, font, etc) from the state stack.

text :: String -> Double -> Double -> DiagramObj ()

Display text on a specified point.

beginPath :: DiagramObj ()

Start assembling a new path.

closePath :: DiagramObj ()

Connect the current path vertex to the start of the path.

moveTo :: P2 Double -> DiagramObj ()

Change the current position.

stroke :: DiagramObj ()

Stroke the current path.

fill :: DiagramObj ()

Fill the current path. Works only on paths that were previously closed.

lineTo :: P2 Double -> DiagramObj ()

Draw a straight line from the current position to a given point.

bezierCurveTo

Arguments

:: P2 Double

First control point.

-> P2 Double

Second control point

-> P2 Double

End point.

-> DiagramObj ()

Draw a bezier curve from the current position to a given point, using two control points.

setLineCap :: LineCap -> DiagramObj ()

Set the line cap style.

setLineJoin :: LineJoin -> DiagramObj ()

Set the line join style.

setLineMiterLimit :: LineMiterLimit -> DiagramObj ()

Set the miter limit.

setOpacity :: Opacity -> DiagramObj ()

Set the global alpha (subject to save and restore).

setLineWidth :: LineWidth Double -> DiagramObj ()

Set the line width (output coordinates assumed).

getRGBA :: SomeColor -> (Double, Double, Double, Double)

Convert a colour to a tuple of (r,g,b,a) components.

getLinearGradient :: LGradient Double -> DiagramObj (ObjRef GradientObj)

Create a linear gradient.

getRadialGradient :: RGradient Double -> DiagramObj (ObjRef GradientObj)

Create a radial gradient.

setStrokeColour :: SomeColor -> DiagramObj ()

Set stroke style to a flat colour.

setLineGradient :: DiagramObj ()

Set stroke style to a previously assembled gradient.

setLineTexture :: LineTexture Double -> DiagramObj ()

Set stroke style.

setGradient :: [GradientStop Double] -> ObjRef GradientObj -> IO ()

Add colour stops to a gradient.

setFillColour :: SomeColor -> DiagramObj ()

Set fill style to a flat colour.

setFillGradient :: DiagramObj ()

Set fill style to a previously defined gradient.

setFillTexture :: FillTexture Double -> DiagramObj ()

Set fill style.

setFont :: Font -> DiagramObj ()

Set font.

setFillRule :: FillRule -> DiagramObj ()

Set fill rule.