#include "system.hh"
#include "group-interface.hh"
-Grob *
+Grob *
Item::clone (int count) const
{
return new Item (*this, count);
}
-
Item::Item (SCM s, Object_key const *key)
: Grob (s, key)
{
broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] = 0;
}
-
bool
-Item::is_breakable (Grob*me)
+Item::is_breakable (Grob *me)
{
if (me->original_)
return false;
- if (!dynamic_cast<Item*> (me))
+ if (!dynamic_cast<Item *> (me))
me->programming_error ("only items can be breakable.");
-
- Item * i = dynamic_cast<Item*> (me->get_parent (X_AXIS));
+
+ Item *i = dynamic_cast<Item *> (me->get_parent (X_AXIS));
return (i) ? Item::is_breakable (i) : to_boolean (me->get_property ("breakable"));
}
Paper_column *
Item::get_column () const
{
- Item *parent = dynamic_cast<Item*> (get_parent (X_AXIS));
+ Item *parent = dynamic_cast<Item *> (get_parent (X_AXIS));
return parent ? parent->get_column () : 0;
}
Item::get_system () const
{
Grob *g = get_parent (X_AXIS);
- return g ? g->get_system () : 0;
+ return g ? g->get_system () : 0;
}
-
void
Item::copy_breakable_items ()
{
Drul_array<Item *> new_copies;
Direction i = LEFT;
int count = 0;
- do
+ do
{
- Grob * dolly = clone (count ++);
- Item * item = dynamic_cast<Item*> (dolly);
+ Grob *dolly = clone (count++);
+ Item *item = dynamic_cast<Item *> (dolly);
pscore_->system_->typeset_grob (item);
new_copies[i] = item;
}
broken_to_drul_ = new_copies;
}
-
bool
Item::is_broken () const
{
return broken_to_drul_[LEFT] || broken_to_drul_[RIGHT];
}
-
/*
Generate items for begin and end-of line.
- */
+*/
void
Item::discretionary_processing ()
{
copy_breakable_items ();
}
-Grob*
-Item::find_broken_piece (System*l) const
+Grob *
+Item::find_broken_piece (System *l) const
{
- if (get_system () == l)
- return (Item*) (this);
+ if (get_system () == l)
+ return (Item *) (this);
Direction d = LEFT;
- do {
- Grob *s = broken_to_drul_[d];
- if (s && s->get_system () == l)
- return s;
- }
+ do
+ {
+ Grob *s = broken_to_drul_[d];
+ if (s && s->get_system () == l)
+ return s;
+ }
while (flip (&d) != LEFT);
return 0;
}
-
-Item*
+Item *
Item::find_prebroken_piece (Direction d) const
{
- Item * me = (Item *) (this);
+ Item *me = (Item *) (this);
if (!d)
return me;
- return dynamic_cast<Item*> (broken_to_drul_[d]);
+ return dynamic_cast<Item *> (broken_to_drul_[d]);
}
-
Direction
Item::break_status_dir () const
{
if (original_)
{
- Item * i = dynamic_cast<Item*> (original_);
+ Item *i = dynamic_cast<Item *> (original_);
return (i->broken_to_drul_[LEFT] == this) ? LEFT : RIGHT;
}
Item::handle_prebroken_dependencies ()
{
Grob::handle_prebroken_dependencies ();
-
+
/*
Can't do this earlier, because try_visibility_lambda () might set
the elt property transparent, which would then be copied.
SCM result = scm_apply_0 (vis, args);
bool trans = ly_scm2bool (scm_car (result));
bool empty = ly_scm2bool (scm_cdr (result));
-
+
if (empty && trans)
suicide ();
else if (empty)
return SCM_EOL;
}
-Item*
-unsmob_item (SCM s )
+Item *
+unsmob_item (SCM s)
{
- return dynamic_cast<Item*> (unsmob_grob (s));
+ return dynamic_cast<Item *> (unsmob_grob (s));
}
-
ADD_INTERFACE (Item,
- "item-interface",
- "\n"
- "\n"
- "Grobs can be distinguished in their role in the horizontal spacing.\n"
- "Many grobs define constraints on the spacing by their sizes. For\n"
- "example, note heads, clefs, stems, and all other symbols with a fixed\n"
- "shape. These grobs form a subtype called @code{Item}.\n"
- "\n"
- "\n"
- "Some items need special treatment for line breaking. For example, a\n"
- "clef is normally only printed at the start of a line (i.e. after a\n"
- "line break). To model this, `breakable' items (clef, key signature,\n"
- "bar lines, etc.) are copied twice. Then we have three versions of each\n"
- "breakable item: one version if there is no line break, one version\n"
- "that is printed before the line break (at the end of a system), one\n"
- "version that is printed after the line break.\n"
- "\n"
- "Whether these versions are visible and take up space, is determined by\n"
- "the outcome of the @code{break-visibility}. This grob property is a\n"
- "function taking a direction (-1, 0 or 1) as argument. It returns a\n"
- "cons of booleans, signifying whether this grob should be transparent\n"
- "and have no extent.\n"
- "\n"
- "The following variables for break-visibility are predefined:\n"
- "@example\n"
- " grob will show: before no after\n"
- " break break break\n"
- " all-invisible no no no\n"
- " begin-of-line-visible no no yes\n"
- " end-of-line-visible yes no no\n"
- " all-visible yes yes yes\n"
- " begin-of-line-invisible yes yes no\n"
- " end-of-line-invisible no yes yes\n"
- "@end example\n"
- ,
- "no-spacing-rods break-visibility breakable")
+ "item-interface",
+ "\n"
+ "\n"
+ "Grobs can be distinguished in their role in the horizontal spacing.\n"
+ "Many grobs define constraints on the spacing by their sizes. For\n"
+ "example, note heads, clefs, stems, and all other symbols with a fixed\n"
+ "shape. These grobs form a subtype called @code{Item}.\n"
+ "\n"
+ "\n"
+ "Some items need special treatment for line breaking. For example, a\n"
+ "clef is normally only printed at the start of a line (i.e. after a\n"
+ "line break). To model this, `breakable' items (clef, key signature,\n"
+ "bar lines, etc.) are copied twice. Then we have three versions of each\n"
+ "breakable item: one version if there is no line break, one version\n"
+ "that is printed before the line break (at the end of a system), one\n"
+ "version that is printed after the line break.\n"
+ "\n"
+ "Whether these versions are visible and take up space, is determined by\n"
+ "the outcome of the @code{break-visibility}. This grob property is a\n"
+ "function taking a direction (-1, 0 or 1) as argument. It returns a\n"
+ "cons of booleans, signifying whether this grob should be transparent\n"
+ "and have no extent.\n"
+ "\n"
+ "The following variables for break-visibility are predefined:\n"
+ "@example\n"
+ " grob will show: before no after\n"
+ " break break break\n"
+ " all-invisible no no no\n"
+ " begin-of-line-visible no no yes\n"
+ " end-of-line-visible yes no no\n"
+ " all-visible yes yes yes\n"
+ " begin-of-line-invisible yes yes no\n"
+ " end-of-line-invisible no yes yes\n"
+ "@end example\n",
+ "no-spacing-rods break-visibility breakable")
projects / lilypond.git / blobdiff