/*
- balloon.cc -- implement Balloon objects
- */
+ balloon.cc -- implement Balloon
-#include "text-item.hh"
+ source file of the GNU LilyPond music typesetter
+
+ (c) 2004--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
+
+#include "text-interface.hh"
#include "grob.hh"
#include "line-interface.hh"
#include "lookup.hh"
#include "font-interface.hh"
-#include "stencil.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 (print, (SCM));
- static bool has_interface (Grob*);
+ DECLARE_GROB_INTERFACE ();
};
MAKE_SCHEME_CALLBACK (Balloon_interface, print, 1);
SCM
-Balloon_interface::print (SCM smob)
+Balloon_interface::print (SCM smob)
{
- Grob *me= unsmob_grob (smob);
-
- SCM cb = me->get_property ("balloon-original-callback");
- SCM scm_mol = SCM_EOL;
-
- if (gh_procedure_p (cb))
- {
- scm_mol = scm_call_1 (cb, smob);
- }
-
- if (!unsmob_stencil (scm_mol))
- return scm_mol;
-
- SCM scm_off = me->get_property ("balloon-text-offset");
-
- if (!is_number_pair (scm_off))
- return scm_mol;
-
- Offset off = ly_scm2offset (scm_off);
- Stencil * m = unsmob_stencil (scm_mol);
- Box orig_extent = m->extent_box ();
- Box box_extent = orig_extent;
+ Grob *me = unsmob_grob (smob);
- Real w = robust_scm2double (me->get_property ("balloon-padding"), .1);
- box_extent.widen (w, w);
+ Grob *p = me->get_parent (X_AXIS);
-
- Stencil fr = Lookup::frame (box_extent, 0.1, 0.05);
+ Offset off (me->relative_coordinate (p, X_AXIS),
+ me->relative_coordinate (p, Y_AXIS));
-
- fr.add_stencil (*m);
+ Box b (p->extent (p, X_AXIS),
+ p->extent (p, Y_AXIS));
+ Real padding = robust_scm2double (me->get_property ("padding"), .1);
+ b.widen (padding, padding);
+ // FIXME
+ Stencil fr = Lookup::frame (b, 0.1, 0.05);
- SCM bt = me->get_property ("balloon-text");
+ SCM bt = me->get_property ("text");
SCM chain = Font_interface::text_font_alist_chain (me);
- chain = gh_cons (me->get_property ("balloon-text-props"), chain);
+ SCM stencil = Text_interface::interpret_markup (me->layout ()->self_scm (),
+ chain, bt);
- SCM text = Text_item::interpret_markup (me->get_paper ()->self_scm (), chain, bt);
+ Stencil *text_stil = unsmob_stencil (stencil);
-
- Stencil *text_mol = unsmob_stencil (text);
-
Offset z1;
-
for (int i = X_AXIS; i < NO_AXES; i++)
{
- Axis a ((Axis)i);
- z1[a] = box_extent [a].linear_combination (sign (off[a]));
- text_mol->align_to (a, -sign (off[a]));
+ Axis a ((Axis)i);
+ z1[a] = b[a].linear_combination (sign (off[a]));
+ text_stil->align_to (a, -sign (off[a]));
}
Offset z2 = z1 + off;
-
+
fr.add_stencil (Line_interface::line (me, z1, z2));
- text_mol->translate (z2);
- fr.add_stencil (*text_mol);
-
- fr = Stencil (orig_extent, fr.get_expr ());
+ text_stil->translate (z2);
+ fr.add_stencil (*text_stil);
+
+ fr.translate (-off);
return fr.smobbed_copy ();
}
-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");
+ADD_INTERFACE (Balloon_interface,
+ "A collection of routines to put text balloons around an"
+ " object.",
+
+ /* properties */
+ "padding "
+ "text "
+ );