selection-spans ( start end font string -- spans )

Vocabulary

ui.text

Inputs

start	an integer
end	an integer
font	a font
string	a string

Outputs

spans

a sequence of pairs of real numbers

Generic word contract

Outputs the visual x intervals occupied by a logical selection. Each pair contains the left and right edges in logical display coordinates. A bidirectional selection may occupy several disjoint intervals. An empty selection produces a zero-width interval at the caret.

Definition

USING: ui.text.private ;

IN: ui.text

HOOK: selection-spans font-renderer
    ( start end font string -- spans )

Methods

USING: core-text opengl sequences ui.text ui.text.core-text ;

M:: core-text-renderer selection-spans
    ( start end font string -- spans )
    font string cached-line start end line-selection-spans
    [ [ gl-unscale ] map ] map ;


USING: arrays kernel math.order ui.text ;

M:: object selection-spans
    ( start end font string -- spans )
    start end [ font string offset>x ] bi@ [ min ] [ max ] 2bi
    2array 1array ;