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 namespaces ui.gadgets.worlds ;
11 HOOK: init-text-rendering font-renderer ( world -- )
13 : world-text-handle ( world -- handle )
14 dup text-handle>> [ dup init-text-rendering ] unless
17 HOOK: flush-layout-cache font-renderer ( -- )
19 [ flush-layout-cache ] flush-layout-cache-hook set-global
21 HOOK: string-dim font-renderer ( font string -- dim )
23 HOOK: string-width font-renderer ( font string -- w )
25 HOOK: string-height font-renderer ( font string -- h )
27 M: object string-dim [ string-width ] [ string-height ] 2bi 2array ;
29 M: object string-width string-dim first ;
31 M: object string-height string-dim second ;
33 HOOK: draw-string font-renderer ( font string -- )
35 HOOK: free-fonts font-renderer ( world -- )
37 : combine-text-dim ( dim1 dim2 -- dim3 )
44 HOOK: x>offset font-renderer ( x font string -- n )
46 HOOK: offset>x font-renderer ( n font string -- x )
48 GENERIC: text-dim ( font text -- dim )
50 M: string text-dim string-dim ;
53 [ { 0 0 } ] 2dip [ string-dim combine-text-dim ] with each ;
55 : text-width ( font text -- w ) text-dim first ;
57 : text-height ( font text -- h ) text-dim second ;
59 HOOK: font-metrics font-renderer ( font -- metrics )
61 HOOK: line-metrics font-renderer ( font string -- metrics )
63 GENERIC: draw-text ( font text -- )
65 M: string draw-text draw-string ;
67 M: selection draw-text draw-string ;
73 [ [ 0.0 ] 2dip string-height 0.0 glTranslated ] 2bi
77 USING: vocabs.loader namespaces system combinators ;
81 { [ os macosx? ] [ "core-text" ] }
82 { [ os windows? ] [ "pango" ] }
83 { [ os unix? ] [ "pango" ] }
85 ] unless* "ui.text." prepend require