2 mensural-ligature.cc -- implement Mensural_ligature
4 source file of the GNU LilyPond music typesetter
6 (c) 2002--2007 Juergen Reuter <reuter@ipd.uka.de>,
7 Pal Benko <benkop@freestart.hu>
10 #include "mensural-ligature.hh"
12 #include "font-interface.hh"
13 #include "international.hh"
16 #include "note-head.hh"
17 #include "output-def.hh"
18 #include "staff-symbol-referencer.hh"
22 * TODO: divide this function into mensural and neo-mensural style.
24 * TODO: move this function to class Lookup?
31 Real vertical_line_thickness)
33 Real staff_space = Staff_symbol_referencer::staff_space (me);
34 Real slope = (interval / 2.0 * staff_space) / width;
36 // Compensate optical illusion regarding vertical position of left
37 // and right endings due to slope.
38 Real ypos_correction = -0.1 * staff_space * sign (slope);
39 Real slope_correction = 0.2 * staff_space * sign (slope);
40 Real corrected_slope = slope + slope_correction / width;
43 if (solid) // colorated flexae
46 = Lookup::beam (corrected_slope, width, staff_space, 0.0);
47 stencil.add_stencil (solid_head);
52 The thickness of the horizontal lines of the flexa shape
53 should be equal to that of the horizontal lines of the
54 neomensural brevis note head (see mf/parmesan-heads.mf).
56 Real const horizontal_line_thickness = staff_space * 0.35;
58 // URGH! vertical_line_thickness is adjustable (via thickness
59 // property), while horizontal_line_thickness is constant.
60 // Maybe both should be adjustable independently?
62 Real height = staff_space - horizontal_line_thickness;
65 = Lookup::beam (corrected_slope, vertical_line_thickness, height, 0.0);
66 stencil.add_stencil (left_edge);
69 = Lookup::beam (corrected_slope, vertical_line_thickness, height, 0.0);
70 right_edge.translate_axis (width - vertical_line_thickness, X_AXIS);
71 right_edge.translate_axis ((width - vertical_line_thickness) *
72 corrected_slope, Y_AXIS);
73 stencil.add_stencil (right_edge);
76 = Lookup::beam (corrected_slope, width,
77 horizontal_line_thickness, 0.0);
78 bottom_edge.translate_axis (-0.5 * height, Y_AXIS);
79 stencil.add_stencil (bottom_edge);
82 = Lookup::beam (corrected_slope, width,
83 horizontal_line_thickness, 0.0);
84 top_edge.translate_axis (+0.5 * height, Y_AXIS);
85 stencil.add_stencil (top_edge);
87 stencil.translate_axis (ypos_correction, Y_AXIS);
92 internal_brew_primitive (Grob *me)
94 SCM primitive_scm = me->get_property ("primitive");
95 if (primitive_scm == SCM_EOL)
97 programming_error ("Mensural_ligature: "
98 "undefined primitive -> ignoring grob");
99 return Lookup::blank (Box (Interval (0, 0), Interval (0, 0)));
101 int primitive = scm_to_int (primitive_scm);
105 Real thickness = 0.0;
107 Real staff_space = Staff_symbol_referencer::staff_space (me);
108 if (primitive & MLP_ANY)
109 thickness = robust_scm2double (me->get_property ("thickness"), .14);
111 if (primitive & MLP_FLEXA)
113 delta_pitch = robust_scm2int (me->get_property ("delta-position"),
116 = robust_scm2double (me->get_property ("flexa-width"), 2.0 * staff_space);
118 if (primitive & MLP_SINGLE_HEAD)
119 width = robust_scm2double (me->get_property ("head-width"), staff_space);
121 switch (primitive & MLP_ANY)
124 return Lookup::blank (Box (Interval (0, 0), Interval (0, 0)));
125 case MLP_LONGA: // mensural brevis head with right cauda
126 out = Font_interface::get_default_font (me)->find_by_name
127 ("noteheads.sM2mensural");
129 case MLP_BREVIS: // mensural brevis head
130 out = Font_interface::get_default_font (me)->find_by_name
131 ("noteheads.sM1mensural");
133 case MLP_MAXIMA: // should be mensural maxima head without stem
134 out = Font_interface::get_default_font (me)->find_by_name
135 ("noteheads.sM1neomensural");
138 out = brew_flexa (me, delta_pitch, false, width, thickness);
141 programming_error (_ ("Mensural_ligature: "
142 "unexpected case fall-through"));
143 return Lookup::blank (Box (Interval (0, 0), Interval (0, 0)));
147 = (me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter")));
149 if (primitive & MLP_STEM)
152 Real y_bottom = 0.0, y_top = 3.0 * staff_space;
154 if (primitive & MLP_DOWN)
160 Interval x_extent (0, thickness);
161 Interval y_extent (y_bottom, y_top);
162 Box join_box (x_extent, y_extent);
164 Stencil join = Lookup::round_filled_box (join_box, blotdiameter);
165 out.add_stencil (join);
168 SCM join_right_scm = me->get_property ("join-right-amount");
170 if (scm_is_number (join_right_scm))
172 int join_right = scm_to_int (join_right_scm);
175 Real y_top = join_right * 0.5 * staff_space;
184 Interval x_extent (width - thickness, width);
185 Interval y_extent (y_bottom, y_top);
186 Box join_box (x_extent, y_extent);
187 Stencil join = Lookup::round_filled_box (join_box, blotdiameter);
189 out.add_stencil (join);
192 programming_error (_ ("Mensural_ligature: (join_right == 0)"));
195 #if 0 /* what happend with the ledger lines? */
196 int pos = Staff_symbol_referencer::get_rounded_position (me);
197 if (primitive & MLP_FLEXA)
200 add_ledger_lines (me, &out, pos, 0.5 * delta_pitch, ledger_take_space);
207 MAKE_SCHEME_CALLBACK (Mensural_ligature, brew_ligature_primitive, 1);
209 Mensural_ligature::brew_ligature_primitive (SCM smob)
211 Grob *me = unsmob_grob (smob);
212 return internal_brew_primitive (me).smobbed_copy ();
215 MAKE_SCHEME_CALLBACK (Mensural_ligature, print, 1);
217 Mensural_ligature::print (SCM)
222 ADD_INTERFACE (Mensural_ligature,
223 "A mensural ligature.",