| Copyright | (c) 2011 diagrams-lib team (see LICENSE) |
|---|---|
| License | BSD-style (see LICENSE) |
| Maintainer | diagrams-discuss@googlegroups.com |
| Safe Haskell | None |
| Language | Haskell2010 |
Diagrams.TwoD.Text
Description
Very basic text primitives along with associated attributes.
- data Text = Text T2 TextAlignment String
- data TextAlignment
- text :: Renderable Text b => String -> Diagram b R2
- topLeftText :: Renderable Text b => String -> Diagram b R2
- alignedText :: Renderable Text b => Double -> Double -> String -> Diagram b R2
- baselineText :: Renderable Text b => String -> Diagram b R2
- newtype Font = Font (Last String)
- getFont :: Font -> String
- font :: HasStyle a => String -> a -> a
- newtype FontSize = FontSize (Last Double)
- getFontSize :: FontSize -> Double
- fontSize :: HasStyle a => Double -> a -> a
- fontSizeA :: HasStyle a => FontSize -> a -> a
- data FontSlant
- data FontSlantA
- getFontSlant :: FontSlantA -> FontSlant
- fontSlant :: HasStyle a => FontSlant -> a -> a
- italic :: HasStyle a => a -> a
- oblique :: HasStyle a => a -> a
- data FontWeight
- data FontWeightA
- getFontWeight :: FontWeightA -> FontWeight
- fontWeight :: HasStyle a => FontWeight -> a -> a
- bold :: HasStyle a => a -> a
Creating text diagrams
A text primitive consists of the string contents and alignment specification, along with a transformation mapping from the local vector space of the text to the vector space in which it is embedded.
Constructors
| Text T2 TextAlignment String |
Instances
| IsPrim Text | |
| Transformable Text | |
| HasOrigin Text | |
| Typeable * Text | |
| Renderable Text NullBackend | |
| type V Text = R2 |
data TextAlignment Source
TextAlignment specifies the alignment of the text's origin.
Constructors
| BaselineText | |
| BoxAlignedText Double Double |
text :: Renderable Text b => String -> Diagram b R2 Source
Create a primitive text diagram from the given string, with center
alignment, equivalent to alignedText 0.5 0.5
Note that it takes up no space, as text size information is not available.
topLeftText :: Renderable Text b => String -> Diagram b R2 Source
Create a primitive text diagram from the given string, origin at
the top left corner of the text's bounding box, equivalent to
alignedText 0 1
Note that it takes up no space.
alignedText :: Renderable Text b => Double -> Double -> String -> Diagram b R2 Source
Create a primitive text diagram from the given string, with the origin set to a point interpolated within the bounding box. The first parameter varies from 0 (left) to 1 (right), and the second parameter from 0 (bottom) to 1 (top).
The height of this box is determined by the font's potential ascent and descent, rather than the height of the particular string.
Note that it takes up no space.
baselineText :: Renderable Text b => String -> Diagram b R2 Source
Create a primitive text diagram from the given string, with the origin set to be on the baseline, at the beginning (although not bounding). This is the reference point of showText in the Cairo graphics library.
Note that it takes up no space.
Text attributes
Font family
The Font attribute specifies the name of a font family. Inner
Font attributes override outer ones.
font :: HasStyle a => String -> a -> a Source
Specify a font family to be used for all text within a diagram.
Font size
The FontSize attribute specifies the size of a font's
em-square, measured with respect to the current local vector space.
Inner FontSize attributes override outer ones.
getFontSize :: FontSize -> Double Source
Extract the size from a FontSize attribute.
fontSize :: HasStyle a => Double -> a -> a Source
Set the font size, that is, the size of the font's em-square as
measured within the current local vector space. The default size
is 1.
Font slant
Constructors
| FontSlantNormal | |
| FontSlantItalic | |
| FontSlantOblique |
data FontSlantA Source
The FontSlantA attribute specifies the slant (normal, italic,
or oblique) that should be used for all text within a diagram.
Inner FontSlantA attributes override outer ones.
getFontSlant :: FontSlantA -> FontSlant Source
Extract the font slant from a FontSlantA attribute.
Font weight
data FontWeightA Source
The FontWeightA attribute specifies the weight (normal or bold)
that should be used for all text within a diagram. Inner
FontWeightA attributes override outer ones.
getFontWeight :: FontWeightA -> FontWeight Source
Extract the font weight from a FontWeightA attribute.
fontWeight :: HasStyle a => FontWeight -> a -> a Source
Specify the weight (normal or bold) that should be
used for all text within a diagram. See also bold
for a useful special case.