HPDF-1.4: Generation of PDF documents Source code Contents Index

Graphics.PDF.Shapes Portability portable Stability experimental Maintainer misc@NOSPAMalpheccar.org

Contents Shapes Paths Usual shapes Style

Description

PDF Shapes

Synopsis

moveto :: Point -> Draw () lineto :: Point -> Draw () arcto :: Angle -> Point -> Draw () curveto :: Point -> Point -> Point -> Draw () beginPath :: Point -> Draw () closePath :: Draw () addBezierCubic :: Point -> Point -> Point -> Draw () addPolygonToPath :: [Point] -> Draw () addLineToPath :: Point -> Draw () strokePath :: Draw () fillPath :: Draw () fillAndStrokePath :: Draw () fillPathEO :: Draw () fillAndStrokePathEO :: Draw () setAsClipPath :: Draw () setAsClipPathEO :: Draw () class Shape a where addShape :: a -> Draw () stroke :: a -> Draw () fill :: a -> Draw () fillAndStroke :: a -> Draw () fillEO :: a -> Draw () fillAndStrokeEO :: a -> Draw () data Line = Line PDFFloat PDFFloat PDFFloat PDFFloat data Rectangle = Rectangle !Point !Point newtype Polygon = Polygon [Point] data Arc = Arc PDFFloat PDFFloat PDFFloat PDFFloat data Ellipse = Ellipse PDFFloat PDFFloat PDFFloat PDFFloat data Circle = Circle PDFFloat PDFFloat PDFFloat data RoundRectangle = RoundRectangle PDFFloat PDFFloat PDFFloat PDFFloat PDFFloat PDFFloat data CapStyle = ButtCap | RoundCap | SquareCap data JoinStyle = MiterJoin | RoundJoin | BevelJoin data DashPattern = DashPattern ![PDFFloat] PDFFloat setWidth :: MonadPath m => PDFFloat -> m () setLineCap :: MonadPath m => CapStyle -> m () setLineJoin :: MonadPath m => JoinStyle -> m () setDash :: MonadPath m => DashPattern -> m () setNoDash :: MonadPath m => m () setMiterLimit :: MonadPath m => PDFFloat -> m ()

Shapes

Paths

moveto :: Point -> Draw () Source

Move pen to a given point without drawing anything

lineto :: Point -> Draw () Source

Draw a line from current point to the one specified by lineto

arcto Source

:: Angle Extent of arc -> Point Center of arc -> Draw () Approximate a circular arc by one cubic bezier curve. larger arc angles mean larger distortions

curveto :: Point -> Point -> Point -> Draw () Source

beginPath :: Point -> Draw () Source

Begin a new path at a position

closePath :: Draw () Source

Close current path

addBezierCubic :: Point -> Point -> Point -> Draw () Source

Append a cubic Bezier curve to the current path. The curve extends from the current point to the point (x3 , y3), using (x1 , y1 ) and (x2, y2) as the Bezier control points

addPolygonToPath :: [Point] -> Draw () Source

Add a polygon to current path

addLineToPath :: Point -> Draw () Source

strokePath :: Draw () Source

Draw current path

fillPath :: Draw () Source

Fill current path

fillAndStrokePath :: Draw () Source

Fill current path

fillPathEO :: Draw () Source

Fill current path using even odd rule

fillAndStrokePathEO :: Draw () Source

Fill current path using even odd rule

setAsClipPath :: Draw () Source

Set clipping path

setAsClipPathEO :: Draw () Source

Set clipping path

Usual shapes

class Shape a where Source

Methods addShape :: a -> Draw () Source stroke :: a -> Draw () Source fill :: a -> Draw () Source fillAndStroke :: a -> Draw () Source fillEO :: a -> Draw () Source fillAndStrokeEO :: a -> Draw () Source Instances Shape Polygon Shape Circle Shape RoundRectangle Shape Ellipse Shape Arc Shape Rectangle Shape Line

data Line Source

Constructors Line PDFFloat PDFFloat PDFFloat PDFFloat Instances Eq Line Shape Line

data Rectangle Source

Constructors Rectangle !Point !Point Instances Eq Rectangle Shape Rectangle

newtype Polygon Source

Constructors Polygon [Point] Instances Shape Polygon

data Arc Source

Constructors Arc PDFFloat PDFFloat PDFFloat PDFFloat Instances Eq Arc Shape Arc

data Ellipse Source

Constructors Ellipse PDFFloat PDFFloat PDFFloat PDFFloat Instances Eq Ellipse Shape Ellipse

data Circle Source

Constructors Circle PDFFloat PDFFloat PDFFloat Instances Eq Circle Shape Circle

data RoundRectangle Source

Constructors RoundRectangle PDFFloat PDFFloat PDFFloat PDFFloat PDFFloat PDFFloat Instances Eq RoundRectangle Shape RoundRectangle

Style

data CapStyle Source

Line cap styles Constructors ButtCap RoundCap SquareCap Instances Enum CapStyle Eq CapStyle

data JoinStyle Source

Line join styles Constructors MiterJoin RoundJoin BevelJoin Instances Enum JoinStyle Eq JoinStyle

data DashPattern Source

Constructors DashPattern ![PDFFloat] PDFFloat Instances Eq DashPattern

setWidth :: MonadPath m => PDFFloat -> m () Source

Set pen width

setLineCap :: MonadPath m => CapStyle -> m () Source

Set line cap

setLineJoin :: MonadPath m => JoinStyle -> m () Source

Set line join

setDash :: MonadPath m => DashPattern -> m () Source

Set the dash pattern

setNoDash :: MonadPath m => m () Source

No dash pattern

setMiterLimit :: MonadPath m => PDFFloat -> m () Source

Set pen width

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