[−][src]Module piet::util

utilities shared by various backends Code useful for multiple backends

Structs

A type backends can use to represent the default values for a TextLayout

DEFAULT_FONT_SIZE	The default point sie for text in piet.
DEFAULT_TEXT_COLOR	The default foreground text color.

compute_blurred_rect	Generate image for a blurred rect, writing it into the provided buffer.
count_until_utf16	returns utf8 text position (code unit offset) at the given utf-16 text position
count_utf16	Counts the number of utf-16 code units in the given string. from xi-editor
first_strong_rtl	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.
line_number_for_position	Returns the index of the line containing this utf8 position, or the last line index if the position is out of bounds.
resolve_range	Resolves a `RangeBounds` into a range in the range 0..len.
size_for_blurred_rect
trailing_nlf	If this string ends in a newline function (NLF) (5.8), return the length of the NLF in bytes.
unpremul	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.