source file of the GNU LilyPond music typesetter
- (c) 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+
+#include "lily-guile.hh"
+#include "bar-line.hh"
+#include "item.hh"
#include "span-bar.hh"
-#include "span-bar-engraver.hh"
-#include "vertical-align-spanner.hh"
+#include "engraver.hh"
-Span_bar_engraver::Span_bar_engraver()
-{
- spanbar_p_ =0;
- valign_l_ =0;
-}
-Span_bar*
-Span_bar_engraver::get_span_bar_p() const
+/**
+
+ Make bars that span multiple "staves". Catch bars, and span a
+ Span_bar over them if we find more than 2 bars. Vertical alignment
+ of staves changes the appearance of spanbars. It is up to the
+ aligner (Vertical_align_engraver, in this case, to add extra
+ dependencies to the spanbars.
+
+ */
+class Span_bar_engraver : public Engraver
{
- return new Span_bar;
-}
+ Item * spanbar_;
+ Link_array<Item> bars_;
+public:
+ TRANSLATOR_DECLARATIONS(Span_bar_engraver);
+protected:
+ virtual void acknowledge_grob (Grob_info);
+ virtual void stop_translation_timestep ();
-void
-Span_bar_engraver::do_creation_processing ()
+};
+
+
+Span_bar_engraver::Span_bar_engraver ()
{
+ spanbar_ =0;
}
-void
-Span_bar_engraver::do_removal_processing ()
-{
-}
+
void
-Span_bar_engraver::acknowledge_element (Score_element_info i)
+Span_bar_engraver::acknowledge_grob (Grob_info i)
{
- int depth = i.origin_grav_l_arr_.size();
+ int depth = i.origin_transes (this).size ();
if (depth > 1
- && dynamic_cast<Bar *> (i.elem_l_))
+ && Bar_line::has_interface (i.grob_))
{
- bar_l_arr_.push (dynamic_cast<Bar *> (i.elem_l_));
-
- if (bar_l_arr_.size() >= 2 && !spanbar_p_)
- /*
- hmm, i do want a bracket with one staff some times, but not always
- if (bar_l_arr_.size() >= 1 && !spanbar_p_)
-
- --jcn
- */
+ Item * it = dynamic_cast<Item*> (i.grob_);
+ bars_.push (it);
- /*
+ if (bars_.size () >= 2 && !spanbar_)
+ {
+ spanbar_ = make_item ("SpanBar");
- use a property? get_property ("singleStaffBracket") ?
+ spanbar_->set_parent (bars_[0], X_AXIS);
- --hwn
- */
- {
- spanbar_p_ = get_span_bar_p();
- announce_element (Score_element_info (spanbar_p_,0));
- spanbar_p_-> type_str_ = bar_l_arr_[0]->type_str_;
+ announce_grob (spanbar_, SCM_EOL);
}
}
- else if (dynamic_cast<Vertical_align_spanner *> (i.elem_l_)
- && i.origin_grav_l_arr_.size() <= 2)
- {
- valign_l_ = dynamic_cast<Vertical_align_spanner *> (i.elem_l_);
- }
}
-
void
-Span_bar_engraver::do_pre_move_processing()
+Span_bar_engraver::stop_translation_timestep ()
{
- if (spanbar_p_)
+ if (spanbar_)
{
- for (int i=0; i < bar_l_arr_.size() ; i++)
- spanbar_p_->add_bar (bar_l_arr_[i]);
- spanbar_p_->set_align (valign_l_);
- typeset_element (spanbar_p_);
- spanbar_p_ =0;
+ for (int i=0; i < bars_.size () ; i++)
+ Span_bar::add_bar (spanbar_,bars_[i]);
+
+ SCM vissym =ly_symbol2scm ("break-visibility");
+ SCM vis = bars_[0]->internal_get_grob_property (vissym);
+ if (scm_equal_p (spanbar_->internal_get_grob_property (vissym), vis) != SCM_BOOL_T)
+ spanbar_->internal_set_grob_property (vissym, vis);
+
+ typeset_grob (spanbar_);
+ spanbar_ =0;
}
- bar_l_arr_.set_size (0);
+ bars_.set_size (0);
}
-IMPLEMENT_IS_TYPE_B1(Span_bar_engraver,Engraver);
-ADD_THIS_TRANSLATOR(Span_bar_engraver);
+
+
+
+
+
+ENTER_DESCRIPTION(Span_bar_engraver,
+/* descr */ "This engraver makes cross-staff barlines: It catches all normal "
+"bar lines, and draws a single span-bar across them.",
+/* creats*/ "SpanBar",
+/* accepts */ "",
+/* acks */ "bar-line-interface",
+/* reads */ "",
+/* write */ "");