Module piet::util [−][src]
Expand description
utilities shared by various backends Code useful for multiple backends
Structs
A type backends can use to represent the default values for a TextLayout
Constants
The default point size for text in piet.
The default foreground text color.
Functions
Generate image for a blurred rect, writing it into the provided buffer.
returns utf8 text position (code unit offset) at the given utf-16 text position
Counts the number of utf-16 code units in the given string. from xi-editor
A heurstic for text direction; returns true
if, while enumerating characters
in this string, a character in the ‘R’ (strong right-to-left) category is
encountered before any character in the ‘L’ (strong left-to-right) category is.
Returns the index of the line containing this utf8 position, or the last line index if the position is out of bounds.
Resolves a RangeBounds
into a range in the range 0..len.
Calculate the size required paint a blurred rect.
If this string ends in a newline function (NLF) (5.8), return the length of the NLF in bytes.
If x
is a single (non-alpha) channel of a premultiplied color and a
is the alpha channel,
returns the corresponding channel of the unpremultiplied version of the color.