2 music-output-def.hh -- declare Output_def
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #ifndef MUSIC_OUTPUT_DEF_HH
10 #define MUSIC_OUTPUT_DEF_HH
12 #include "lily-proto.hh"
13 #include "virtual-methods.hh"
18 Output settings for a block of music.
20 This devolved into a rather empty class. The distinction between
21 various instances is made in the parser, which creates
22 midi/layout/paper blocks depending on the keyword read.
24 The data structure is set up as recursive: the definitions not
25 supplied in layout are looked up in paper. This is done through
26 the parent_ field of Output_def. However, such nesting is limited to
29 * first because the parser hard-codes the different types
32 * Second, because the prime benefit of multiple levels
33 (eg. paper containing layout for a score, containing layout of a
34 \score embedded in \markup) requires scaling the Stencils (eg. the
35 one coming from score at markup level)
42 VIRTUAL_COPY_CONSTRUCTOR (Output_def, Output_def);
43 DECLARE_SMOBS (Output_def);
52 Output_def (Output_def const&);
58 SCM c_variable (string id) const;
59 SCM lookup_variable (SCM sym) const;
60 void set_variable (SCM sym, SCM val);
61 Real get_dimension (SCM symbol) const;
63 SCM get_font_table (Output_def *def);
64 void assign_context_def (Output_def *m, SCM transdef);
65 SCM find_context_def (Output_def const *m, SCM name);
67 Interval line_dimensions_int (Output_def*def, int);
70 Font_metric *select_encoded_font (Output_def *layout, SCM chain);
71 Font_metric *select_font (Output_def *layout, SCM chain);
73 DECLARE_UNSMOB (Output_def, output_def);
76 Font_metric* find_pango_font (Output_def *layout, SCM descr, Real factor);
77 Font_metric *find_scaled_font (Output_def *od, Font_metric *f, Real magnification);
78 Output_def *scale_output_def (Output_def *def, Real scale);
80 Real output_scale (Output_def*);
82 #endif /* MUSIC_OUTPUT_DEF_HH */