Portability | GHC |
---|---|
Stability | unstable |
Maintainer | stephen.tetley@gmail.com |
Helpers for working with measured / advance text.
- advtext :: FromPtSize u => EscapedText -> AdvGraphic u
- textVector :: FromPtSize u => EscapedText -> DrawingInfo (AdvanceVec u)
- charVector :: FromPtSize u => EscapedChar -> DrawingInfo (AdvanceVec u)
- multilineHeight :: (Real u, Floating u, FromPtSize u) => Int -> DrawingInfo u
- textObjectPos :: (Real u, Floating u, FromPtSize u) => Int -> u -> DrawingInfo (ObjectPos u)
- borderedTextObjectPos :: (Real u, Floating u, FromPtSize u) => Int -> u -> DrawingInfo (ObjectPos u)
- centerToBaseline :: (Fractional u, FromPtSize u) => DrawingInfo u
- centerSpinePoints :: Floating u => Int -> Radian -> LocChain u
Documentation
advtext :: FromPtSize u => EscapedText -> AdvGraphic uSource
Single line text, returning its advance vector.
textVector :: FromPtSize u => EscapedText -> DrawingInfo (AdvanceVec u)Source
charVector :: FromPtSize u => EscapedChar -> DrawingInfo (AdvanceVec u)Source
multilineHeight :: (Real u, Floating u, FromPtSize u) => Int -> DrawingInfo uSource
Height of multiline text is cap_height to descender for the first line, then baseline-to-baseline span for the remaining lines.
textObjectPos :: (Real u, Floating u, FromPtSize u) => Int -> u -> DrawingInfo (ObjectPos u)Source
Height of multiline text is cap_height to descender for the first line, then baseline-to-baseline span for the remaining lines.
The answer is in centerform, i.e.:
ObjectPos half_width half_width half_height half_height
borderedTextObjectPos :: (Real u, Floating u, FromPtSize u) => Int -> u -> DrawingInfo (ObjectPos u)Source
Variant of textObjectPos
where the calculation includes
margins around all four sides of the enclosing rectangle.
Margin sizes are taken from the text_margin
field in the
DrawingContext
.
centerToBaseline :: (Fractional u, FromPtSize u) => DrawingInfo uSource
Calculate the distance from the center of a one-line textbox
to the baseline. Note the height of a textbox is vspan
which
is cap_height + descender