-/*
- dimension-cache.cc -- implement Dimension_cache
-
+/*
+ dimension-cache.cc -- implement Dimension_cache
+
source file of the GNU LilyPond music typesetter
-
- (c) 1998--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
- */
-#include <math.h>
-#include "warn.hh"
+
+ (c) 1998--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
+
#include "dimension-cache.hh"
-#include "parray.hh"
-#include "score-element.hh"
+#include "warn.hh"
+#include "grob.hh"
Dimension_cache::Dimension_cache (Dimension_cache const &d)
{
- init();
- extent_callback_l_ = d.extent_callback_l_;
- basic_offset_ = d.basic_offset_;
- extra_offset_ = d.extra_offset_;
- off_valid_b_ = d.off_valid_b_;
- off_callbacks_ = d.off_callbacks_;
- parent_l_ = d.parent_l_;
+ init ();
+ offset_ = d.offset_ ? new Real (*d.offset_) : 0;
+ parent_ = d.parent_;
+ extent_ = d.extent_ ? new Interval (*d.extent_) : 0;
}
Dimension_cache::Dimension_cache ()
{
- init();
+ init ();
}
void
-Dimension_cache::init()
-{
- extent_callback_l_ =0;
- basic_offset_ =0.0;
- extra_offset_ =0.0;
-
- elt_l_ = 0;
- dim_.set_empty ();
- parent_l_ =0;
- valid_b_ = false;
- off_valid_b_ = false;
-}
-
-
-void
-Dimension_cache::translate (Real x)
-{
- extra_offset_ += x;
-}
-
-Real
-Dimension_cache::relative_coordinate (Dimension_cache *refp) const
-{
- if (refp == this)
- return 0.0;
-
- /*
- We catch PARENT_L_ == nil case with this, but we crash if we did
- not ask for the absolute coordinate (ie. REFP == nil.)
-
- */
- if (refp == parent_l_)
- return get_offset ();
- else
- return get_offset () + parent_l_->relative_coordinate (refp);
-}
-
-Axis
-Dimension_cache::axis () const
-{
- if (elt_l_-> dim_cache_[X_AXIS] == this)
- return X_AXIS;
- else
- return Y_AXIS;
-}
-
-Real
-Dimension_cache::get_offset () const
+Dimension_cache::init ()
{
- Dimension_cache *me = (Dimension_cache*) this;
- while (off_callbacks_.size ())
- {
- Offset_cache_callback c = me->off_callbacks_[0];
- me->off_callbacks_.del (0);
- Real r = (*c) (me);
- if (isinf (r) || isnan (r))
- {
- r = 0.0;
- programming_error ("Infinity or NaN encountered");
- }
- me->basic_offset_ +=r;
- }
- return basic_offset_ + extra_offset_;
+ offset_ = 0;
+ extent_ = 0;
+ parent_ = 0;
}
-Dimension_cache *
-Dimension_cache::common_refpoint (Dimension_cache const* s) const
+Dimension_cache::~Dimension_cache ()
{
- /*
- I don't like the quadratic aspect of this code. Maybe this should
- be rewritten some time, but the largest chain of parents might be
- 10 high or so, so it shouldn't be a real issue. */
- for (Dimension_cache const *c = this; c; c = c->parent_l_)
- for (Dimension_cache const * d = s; d; d = d->parent_l_)
- if (d == c)
- return (Dimension_cache*)d;
-
- return 0;
-}
-
-Interval
-Dimension_cache::point_dimension_callback (Dimension_cache const* )
-{
- return Interval (0,0);
-}
-
-Interval
-Dimension_cache::get_dim () const
-{
- Interval r;
- Dimension_cache *nc = ((Dimension_cache*)this);
- if (!extent_callback_l_)
- {
- nc->dim_.set_empty ();
- }
- else if (!valid_b_)
- {
- nc->dim_= (*extent_callback_l_ ) (nc);
- nc->valid_b_ = true;
- }
-
- r=dim_;
- return r;
+ clear ();
}
void
-Dimension_cache::set_callback (Dim_cache_callback c)
+Dimension_cache::clear ()
{
- extent_callback_l_ =c;
+ delete extent_;
+ delete offset_;
+ extent_ = 0;
+ offset_ = 0;
}
-
-