Graphics.HGL.Draw.Text

Drawing text.

Drawing text

text :: Point -> String -> Graphic

Render a String positioned relative to the specified Point.

textInfo :: String -> Draw (Point, Size)

textInfo s returns:

1. The offset at which the string would be drawn according to the current text alignment (e.g., (Center, Baseline) will result in an offset of (-width/2,0))
2. The size at which the text would be drawn using the current font.

Color

data RGB

A color, comprising red, green and blue components.

Constructors

RGB Word8 Word8 Word8

setTextColor :: RGB -> Draw RGB

Set the foreground color for drawing text, returning the previous value.

setBkColor :: RGB -> Draw RGB

Set the background color for drawing text, returning the previous value. The background color is ignored when the mode is Transparent.

data BkMode

Background mode for drawing text.

Constructors

Opaque

Draw text on a bounding rectangle filled with the current background color.

Transparent

Draw text without a background rectangle.

setBkMode :: BkMode -> Draw BkMode

Set the background mode for drawing text, returning the previous value.

Alignment

type Alignment = (HAlign, VAlign)

How strings drawn with text are positioned relative to the specified reference point.

data HAlign

Horizontal alignment of text. Names have a tick to distinguish them from Prelude names.

Constructors

Left'

align the left edge of the text with the reference point

Center

center the text with the reference point

Right'

align the right edge of the text with the reference point

Instances

Enum HAlign

Eq HAlign

Ord HAlign

Show HAlign

Ix HAlign

data VAlign

Vertical alignment of text.

Constructors

Top

align the top edge of the text with the reference point

Baseline

align the baseline of the text with the reference point

Bottom

align the bottom edge of the text with the reference point

Instances

Enum VAlign

Eq VAlign

Ord VAlign

Show VAlign

Ix VAlign

setTextAlignment :: Alignment -> Draw Alignment

Set the alignment for drawing text, returning the previous value.