1 ! Copyright (C) 2009 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: kernel arrays sequences math math.order opengl opengl.gl
4 strings fonts colors accessors ;
11 HOOK: init-text-rendering font-renderer ( world -- )
13 HOOK: finish-text-rendering font-renderer ( world -- )
15 M: object finish-text-rendering drop ;
17 HOOK: string-dim font-renderer ( font string -- dim )
19 HOOK: string-width font-renderer ( font string -- w )
21 HOOK: string-height font-renderer ( font string -- h )
23 M: object string-dim [ string-width ] [ string-height ] 2bi 2array ;
25 M: object string-width string-dim first ;
27 M: object string-height string-dim second ;
29 HOOK: draw-string font-renderer ( font string -- )
31 HOOK: free-fonts font-renderer ( world -- )
33 : combine-text-dim ( dim1 dim2 -- dim3 )
40 HOOK: x>offset font-renderer ( x font string -- n )
42 HOOK: offset>x font-renderer ( n font string -- x )
44 GENERIC: text-dim ( font text -- dim )
46 M: string text-dim string-dim ;
49 [ { 0 0 } ] 2dip [ string-dim combine-text-dim ] with each ;
51 : text-width ( font text -- w ) text-dim first ;
53 : text-height ( font text -- h ) text-dim second ;
55 HOOK: font-metrics font-renderer ( font -- metrics )
57 HOOK: line-metrics font-renderer ( font string -- metrics )
59 GENERIC: draw-text ( font text -- )
61 M: string draw-text draw-string ;
63 M: selection draw-text draw-string ;
69 [ [ 0.0 ] 2dip string-height 0.0 glTranslated ] 2bi