/*
- balloon.cc -- implement Balloon objects
- */
+ balloon.cc -- implement Balloon
+
+ source file of the GNU LilyPond music typesetter
+
+ (c) 2004--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
#include "text-item.hh"
#include "grob.hh"
#include "line-interface.hh"
#include "lookup.hh"
#include "font-interface.hh"
-#include "molecule.hh"
#include "lily-guile.hh"
-#include "paper-def.hh"
+#include "output-def.hh"
#include "misc.hh"
-struct Balloon_interface
+class Balloon_interface
{
-
public:
- DECLARE_SCHEME_CALLBACK (brew_molecule, (SCM));
+ DECLARE_SCHEME_CALLBACK (print, (SCM));
static bool has_interface (Grob*);
};
-MAKE_SCHEME_CALLBACK (Balloon_interface, brew_molecule, 1);
+MAKE_SCHEME_CALLBACK (Balloon_interface, print, 1);
SCM
-Balloon_interface::brew_molecule (SCM smob)
+Balloon_interface::print (SCM smob)
{
- Grob *me= unsmob_grob (smob);
+ Grob *me = unsmob_grob (smob);
- SCM cb = me->get_grob_property ("balloon-original-callback");
- SCM scm_mol = SCM_EOL;
+ SCM cb = me->get_property ("balloon-original-callback");
+ SCM stil = SCM_EOL;
- if (gh_procedure_p (cb))
- {
- scm_mol = scm_call_1 (cb, smob);
- }
+ if (ly_c_procedure_p (cb))
+ stil = scm_call_1 (cb, smob);
- if (!unsmob_molecule (scm_mol))
- return scm_mol;
+ if (!unsmob_stencil (stil))
+ return stil;
- SCM scm_off = me->get_grob_property ("balloon-text-offset");
+ SCM scm_off = me->get_property ("balloon-text-offset");
if (!is_number_pair (scm_off))
- return scm_mol;
+ return stil;
Offset off = ly_scm2offset (scm_off);
- Molecule * m = unsmob_molecule (scm_mol);
- Box orig_extent = m->extent_box ();
+ Stencil *s = unsmob_stencil (stil);
+ Box orig_extent = s->extent_box ();
Box box_extent = orig_extent;
- SCM widen = me->get_grob_property ("balloon-padding");
- Real w = .1;
- if (gh_number_p (widen))
- {
- w = gh_scm2double (widen);
- }
+ Real w = robust_scm2double (me->get_property ("balloon-padding"), .1);
box_extent.widen (w, w);
-
-
- Molecule fr = Lookup::frame (box_extent, 0.1, 0.05);
-
- fr.add_molecule (*m);
-
-
-
- SCM bt = me->get_grob_property ("balloon-text");
- SCM chain = Font_interface::font_alist_chain (me);
- chain = gh_cons (me->get_grob_property ("balloon-text-props"), chain);
+ // FIXME
+ Stencil fr = Lookup::frame (box_extent, 0.1, 0.05);
+ fr.add_stencil (*s);
+
+ SCM bt = me->get_property ("balloon-text");
+ SCM chain = Font_interface::text_font_alist_chain (me);
+ chain = scm_cons (me->get_property ("balloon-text-props"), chain);
- SCM text = Text_item::interpret_markup (me->get_paper ()->self_scm (), chain, bt);
+ SCM text = Text_interface::interpret_markup (me->get_layout ()->self_scm (),
+ chain, bt);
-
- Molecule *text_mol = unsmob_molecule (text);
-
+ Stencil *text_stil = unsmob_stencil (text);
+
Offset z1;
-
for (int i = X_AXIS; i < NO_AXES; i++)
{
- Axis a((Axis)i);
+ Axis a ((Axis)i);
z1[a] = box_extent [a].linear_combination (sign (off[a]));
- text_mol->align_to (a, -sign (off[a]));
+ text_stil->align_to (a, -sign (off[a]));
}
Offset z2 = z1 + off;
-
- fr.add_molecule (Line_interface::line (me, z1, z2));
+
+ fr.add_stencil (Line_interface::line (me, z1, z2));
- text_mol->translate (z2);
- fr.add_molecule (*text_mol);
-
- fr = Molecule (orig_extent, fr.get_expr ());
+ text_stil->translate (z2);
+ fr.add_stencil (*text_stil);
+
+ fr = Stencil (orig_extent, fr.expr ());
return fr.smobbed_copy ();
}
-ADD_INTERFACE (Balloon_interface,"text-balloon-interface",
- "comic books.",
+ADD_INTERFACE (Balloon_interface, "text-balloon-interface",
+ "A collection of routines to put text balloons around an object.",
"balloon-padding balloon-text-props balloon-text-offset balloon-text balloon-original-callback");