From: fred <fred>
Date: Sat, 13 Sep 1997 10:03:05 +0000 (+0000)
Subject: lilypond-0.1.14
X-Git-Tag: release/1.5.59~6057
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=ca7cbb3a373ed0372ee7f4f297ba25baf8ed1fdb;p=lilypond.git

lilypond-0.1.14
---

diff --git a/lily/graphical-element.cc b/lily/graphical-element.cc
new file mode 100644
index 0000000000..98f29f77f4
--- /dev/null
+++ b/lily/graphical-element.cc
@@ -0,0 +1,188 @@
+/*
+  graphical-element.cc -- implement Graphical_element
+
+  source file of the GNU LilyPond music typesetter
+
+  (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+*/
+
+#include "graphical-element.hh"
+#include "axis-group-element.hh"
+#include "debug.hh"
+
+Graphical_element::Graphical_element ()
+{
+  init ();
+}
+
+Graphical_element::Graphical_element (Graphical_element const &s)
+{
+  init ();
+  empty_b_ = s.empty_b_;
+  axis_group_l_a_[0] = axis_group_l_a_[1] =0;
+  offset_ = Offset (0,0);
+} 
+
+Graphical_element::~Graphical_element ()
+{
+  
+}
+
+void
+Graphical_element::init ()
+{
+  empty_b_ = false;
+  axis_group_l_a_[X_AXIS] = axis_group_l_a_[Y_AXIS] =0;
+  offset_ = Offset (0,0);
+  cached_valid_b_a_ [X_AXIS] = cached_valid_b_a_[Y_AXIS] = false;
+}
+
+void
+Graphical_element::invalidate_cache (Axis a)
+{
+  Graphical_element * g = this;
+  while (g && g->cached_valid_b_a_[a])
+    {
+      g->cached_valid_b_a_ [a] = false;  
+      g = g->axis_group_l_a_[a];
+    }
+}
+
+Real
+Graphical_element::absolute_coordinate (Axis a) const
+{
+  Real r = offset_[a];
+  for (Axis_group_element * axis_group_l = axis_group_l_a_[a];
+       axis_group_l; axis_group_l = axis_group_l->axis_group_l_a_[a])
+	
+    r += axis_group_l->offset_[a];
+  return r;
+}
+ 
+
+Offset
+Graphical_element::absolute_offset() const
+{
+  return Offset (absolute_coordinate (X_AXIS), absolute_coordinate (Y_AXIS));
+}
+
+void
+Graphical_element::translate (Real y, Axis a)
+{
+  if (axis_group_l_a_[a])
+    axis_group_l_a_[a]->invalidate_cache (a);
+  offset_[a] += y;
+}
+
+Real
+Graphical_element::relative_coordinate (Axis_group_element*e, Axis a) const
+{
+  Real r =0.0;
+  for (Axis_group_element * axis_group_l = axis_group_l_a_[a];
+       axis_group_l != e;
+       axis_group_l = axis_group_l->axis_group_l_a_[a])
+    r +=  axis_group_l->offset_[a];
+
+  return r;
+}
+
+Axis_group_element* 
+Graphical_element::common_group (Graphical_element const* s, Axis a) const
+{
+  Link_array<Axis_group_element> my_groups;
+  for (Axis_group_element * axis_group_l = axis_group_l_a_[a];
+       axis_group_l;
+       axis_group_l = axis_group_l->axis_group_l_a_[a])
+    my_groups.push (axis_group_l);
+
+  Axis_group_element* common_l=0;
+  for (Axis_group_element * axis_group_l = s->axis_group_l_a_[a];
+       !common_l && axis_group_l;
+       axis_group_l = axis_group_l->axis_group_l_a_[a])
+    common_l = my_groups.find_l (axis_group_l);
+
+  return common_l;
+}
+
+
+
+void
+Graphical_element::translate (Offset offset)
+{
+  translate (offset[Y_AXIS], Y_AXIS);
+  translate (offset[X_AXIS], X_AXIS);
+}
+
+Interval
+Graphical_element::width() const
+{
+  return extent (X_AXIS);
+}
+
+void
+Graphical_element::set_empty (bool b)
+{
+  if (empty_b_ != b)
+    {
+      empty_b_ = b;
+      if (!empty_b_)
+	{
+	  invalidate_cache (X_AXIS);
+	  invalidate_cache (Y_AXIS);
+	}
+    }
+  
+}
+
+Interval
+Graphical_element::extent (Axis a) const
+{
+  if (empty_b_)
+    return Interval ();
+  
+  if (!cached_valid_b_a_[a])
+    {
+      Graphical_element *self = (Graphical_element*)this;
+      self->cached_dimension_a_[a] = (a == X_AXIS)? do_width(): do_height ();
+      self->cached_valid_b_a_[a] = true;
+    }
+  
+  Interval r(cached_dimension_a_[a]);
+  if (!r.empty_b()) // float exception on DEC Alpha
+    r+=offset_[a];
+
+  return r;
+}
+
+Interval
+Graphical_element::height() const
+{
+  return extent (Y_AXIS);
+}
+
+void
+Graphical_element::unlink ()
+{
+    for (int j=0; j < 2; j++)
+    if (axis_group_l_a_[j])
+      axis_group_l_a_[j]->remove_element (this);
+}
+
+void
+Graphical_element::junk_links ()
+{
+    axis_group_l_a_[X_AXIS] = axis_group_l_a_[Y_AXIS] =0;
+}
+
+void
+Graphical_element::print () const
+{
+#ifndef NPRINT
+  if (offset_.x() || offset_.y ())
+    DOUT << "offset: " << offset_.str() ;
+  DOUT << "\n";
+#endif
+}
+
+IMPLEMENT_IS_TYPE_B(Graphical_element);
+