factor/library/ui/labels.factor

35 lines
922 B
Factor

! Copyright (C) 2005 Slava Pestov.
! See http://factor.sf.net/license.txt for BSD license.
IN: gadgets-labels
USING: arrays freetype gadgets gadgets-layouts gadgets-theme
generic hashtables io kernel math namespaces opengl sequences
styles ;
! A label gadget draws a string.
TUPLE: label text font color ;
C: label ( text -- label )
dup delegate>gadget
[ set-label-text ] keep
dup label-theme ;
: set-label-text* ( text label -- )
2dup label-text =
[ 2dup [ set-label-text ] keep relayout ] unless 2drop ;
: label-font* ( label -- font )
label-font lookup-font ;
: label-size ( gadget text -- dim )
dup label-font* dup font-height >r
swap label-text string-width r> 0 3array ;
M: label pref-dim ( label -- dim )
label-size ;
: draw-label ( label -- )
dup label-color gl-color
dup label-font* swap label-text draw-string ;
M: label draw-gadget* ( label -- ) draw-label ;