HTk.Canvasitems.Line

HTk's line canvas item. A line object on a canvas widget.

Documentation

data ArrowHead

The ArrowHead datatype (see Line.arrowstyle).

Constructors

BothEnds

LastEnd

FirstEnd

NoHead

Instances

Enum ArrowHead

Methods

succ :: ArrowHead -> ArrowHead

pred :: ArrowHead -> ArrowHead

toEnum :: Int -> ArrowHead

fromEnum :: ArrowHead -> Int

enumFrom :: ArrowHead -> [ArrowHead]

enumFromThen :: ArrowHead -> ArrowHead -> [ArrowHead]

enumFromTo :: ArrowHead -> ArrowHead -> [ArrowHead]

enumFromThenTo :: ArrowHead -> ArrowHead -> ArrowHead -> [ArrowHead]

Eq ArrowHead

Methods

(==) :: ArrowHead -> ArrowHead -> Bool

(/=) :: ArrowHead -> ArrowHead -> Bool

Ord ArrowHead

Methods

compare :: ArrowHead -> ArrowHead -> Ordering

(<) :: ArrowHead -> ArrowHead -> Bool

(<=) :: ArrowHead -> ArrowHead -> Bool

(>) :: ArrowHead -> ArrowHead -> Bool

(>=) :: ArrowHead -> ArrowHead -> Bool

max :: ArrowHead -> ArrowHead -> ArrowHead

min :: ArrowHead -> ArrowHead -> ArrowHead

Read ArrowHead

Internal.

Methods

readsPrec :: Int -> ReadS ArrowHead

readList :: ReadS [ArrowHead]

readPrec :: ReadPrec ArrowHead

readListPrec :: ReadPrec [ArrowHead]

Show ArrowHead

Internal.

Methods

showsPrec :: Int -> ArrowHead -> ShowS

show :: ArrowHead -> String

showList :: [ArrowHead] -> ShowS

GUIValue ArrowHead

Internal.

Methods

cdefault :: ArrowHead

toGUIValue :: ArrowHead -> GUIVALUE

maybeGUIValue :: GUIVALUE -> Maybe ArrowHead

fromGUIValue :: GUIVALUE -> ArrowHead

data CapStyle

The CapStyle datatype (see Line.capstyle).

Constructors

CapRound

CapProjecting

CapButt

Instances

Enum CapStyle

Methods

succ :: CapStyle -> CapStyle

pred :: CapStyle -> CapStyle

toEnum :: Int -> CapStyle

fromEnum :: CapStyle -> Int

enumFrom :: CapStyle -> [CapStyle]

enumFromThen :: CapStyle -> CapStyle -> [CapStyle]

enumFromTo :: CapStyle -> CapStyle -> [CapStyle]

enumFromThenTo :: CapStyle -> CapStyle -> CapStyle -> [CapStyle]

Eq CapStyle

Methods

(==) :: CapStyle -> CapStyle -> Bool

(/=) :: CapStyle -> CapStyle -> Bool

Ord CapStyle

Methods

compare :: CapStyle -> CapStyle -> Ordering

(<) :: CapStyle -> CapStyle -> Bool

(<=) :: CapStyle -> CapStyle -> Bool

(>) :: CapStyle -> CapStyle -> Bool

(>=) :: CapStyle -> CapStyle -> Bool

max :: CapStyle -> CapStyle -> CapStyle

min :: CapStyle -> CapStyle -> CapStyle

Read CapStyle

Internal.

Methods

readsPrec :: Int -> ReadS CapStyle

readList :: ReadS [CapStyle]

readPrec :: ReadPrec CapStyle

readListPrec :: ReadPrec [CapStyle]

Show CapStyle

Internal.

Methods

showsPrec :: Int -> CapStyle -> ShowS

show :: CapStyle -> String

showList :: [CapStyle] -> ShowS

GUIValue CapStyle

Internal.

Methods

cdefault :: CapStyle

toGUIValue :: CapStyle -> GUIVALUE

maybeGUIValue :: GUIVALUE -> Maybe CapStyle

fromGUIValue :: GUIVALUE -> CapStyle

data JoinStyle

The JoinStyle datatype (see Line.joinstyle).

Constructors

JoinRound

JoinMiter

JoinBevel

Instances

Enum JoinStyle

Methods

succ :: JoinStyle -> JoinStyle

pred :: JoinStyle -> JoinStyle

toEnum :: Int -> JoinStyle

fromEnum :: JoinStyle -> Int

enumFrom :: JoinStyle -> [JoinStyle]

enumFromThen :: JoinStyle -> JoinStyle -> [JoinStyle]

enumFromTo :: JoinStyle -> JoinStyle -> [JoinStyle]

enumFromThenTo :: JoinStyle -> JoinStyle -> JoinStyle -> [JoinStyle]

Eq JoinStyle

Methods

(==) :: JoinStyle -> JoinStyle -> Bool

(/=) :: JoinStyle -> JoinStyle -> Bool

Ord JoinStyle

Methods

compare :: JoinStyle -> JoinStyle -> Ordering

(<) :: JoinStyle -> JoinStyle -> Bool

(<=) :: JoinStyle -> JoinStyle -> Bool

(>) :: JoinStyle -> JoinStyle -> Bool

(>=) :: JoinStyle -> JoinStyle -> Bool

max :: JoinStyle -> JoinStyle -> JoinStyle

min :: JoinStyle -> JoinStyle -> JoinStyle

Read JoinStyle

Internal.

Methods

readsPrec :: Int -> ReadS JoinStyle

readList :: ReadS [JoinStyle]

readPrec :: ReadPrec JoinStyle

readListPrec :: ReadPrec [JoinStyle]

Show JoinStyle

Internal.

Methods

showsPrec :: Int -> JoinStyle -> ShowS

show :: JoinStyle -> String

showList :: [JoinStyle] -> ShowS

GUIValue JoinStyle

Internal.

Methods

cdefault :: JoinStyle

toGUIValue :: JoinStyle -> GUIVALUE

maybeGUIValue :: GUIVALUE -> Maybe JoinStyle

fromGUIValue :: GUIVALUE -> JoinStyle

data Line

The Line datatype.

Instances

Eq Line

Methods

(==) :: Line -> Line -> Bool

(/=) :: Line -> Line -> Bool

Destroyable Line

A line item can be destroyed.

Methods

destroy :: Line -> IO ()

Synchronized Line

You can synchronize on a line item.

Methods

synchronize :: Line -> IO b -> IO b

GUIObject Line

Internal.

Methods

toGUIObject :: Line -> GUIOBJECT

cname :: Line -> String

cset :: GUIValue a => Line -> ConfigID -> a -> IO Line

cget :: GUIValue a => Line -> ConfigID -> IO a

HasSize Line

You can specify the width of the line.

Methods

width :: Distance -> Config Line

getWidth :: Line -> IO Distance

height :: Distance -> Config Line

getHeight :: Line -> IO Distance

size :: Size -> Config Line

getSize :: Line -> IO Size

SegmentedCanvasItem Line

A line is a segmented canvas item. It has a splinesteps and smooth configuration.

Methods

splinesteps :: Int -> Config Line

getSplinesteps :: Line -> IO Int

smooth :: Bool -> Config Line

getSmooth :: Line -> IO Bool

FilledCanvasItem Line

A line item has filling, outline width and stipple configurations.

Methods

filling :: ColourDesignator c => c -> Config Line

getFilling :: Line -> IO Colour

outline :: ColourDesignator c => c -> Config Line

getOutline :: Line -> IO Colour

stipple :: BitMapHandle -> Config Line

getStipple :: Line -> IO BitMapHandle

outlinewidth :: Distance -> Config Line

getOutlineWidth :: Line -> IO Distance

CanvasItem Line

A line item is a canvas item (any canvas item is an instance of the abstract class CanvasItem).

TaggedCanvasItem Line

A line item can have several tags (handlers for a set of canvas items).

Methods

tags :: [CanvasTag] -> Config Line

createLine

Arguments

:: Canvas

the parent canvas.

-> [Config Line]

the list of configuration options for this line item.

-> IO Line

A line item.

Constructs a new line item.

arrowshape :: ArrowShape -> Config Line

Sets the shape of the arrows at the ends of a line.

getArrowshape :: Line -> IO ArrowShape

Gets the shape of the arrows at the end of a line.

arrowstyle :: ArrowHead -> Config Line

Sets the style of the arrows at the ends of a line.

getArrowstyle :: Line -> IO ArrowHead

Gets the style of the arrows at the ends of a line.

capstyle :: CapStyle -> Config Line

Sets the capstyle at the ends of a line (butt, projecting or round).

getCapstyle :: Line -> IO CapStyle

Gets the capstyle at the ends of a line.

joinstyle :: JoinStyle -> Config Line

Sets the joinstyle between the line segments (bevel, miter or round).

getJoinstyle :: Line -> IO JoinStyle

Gets the joinstyle between the line segments.