resolve merge

[lilypond.git] / lily / grob.cc

diff --git a/lily/grob.cc b/lily/grob.cc
index a3f41a856d3a6c90a01bfb8e8dfd11354b24b3bc..c613effccc65fd6be001aad742e41a1ed29b15a4 100644 (file)
--- a/lily/grob.cc
+++ b/lily/grob.cc
@@ -1,9 +1,20 @@
 /*
-  grob.cc -- implement Grob
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-  (c) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "grob.hh"
@@ -11,6 +22,7 @@
 #include <cstring>
 
 #include "align-interface.hh"
+#include "axis-group-interface.hh"
 #include "input.hh"
 #include "international.hh"
 #include "item.hh"
@@ -19,6 +31,7 @@
 #include "music.hh"
 #include "output-def.hh"
 #include "pointer-group-interface.hh"
+#include "program-option.hh"
 #include "stencil.hh"
 #include "stream-event.hh"
 #include "system.hh"
@@ -110,7 +123,9 @@ Grob::get_print_stencil () const
   if (Stencil *m = unsmob_stencil (stil))
     {
       retval = *m;
-      if (to_boolean (get_property ("transparent")))
+      bool transparent = to_boolean (get_property ("transparent"));
+
+      if (transparent)
        retval = Stencil (m->extent_box (), SCM_EOL);
       else
        {
@@ -142,6 +157,16 @@ Grob::get_print_stencil () const
          retval = Stencil (retval.extent_box (), expr);
        }
 
+      /* process whiteout */
+      /* a grob has to be visible, otherwise the whiteout property has no effect */
+      if (!transparent && to_boolean (get_property ("whiteout")))
+        {
+          /* Call the scheme procedure stencil-whiteout in scm/stencils.scm */
+          /* to add a round-filled-box stencil to the stencil list */
+          retval
+            = *unsmob_stencil (scm_call_1 (ly_lily_module_constant ("stencil-whiteout"),
+                                           retval.smobbed_copy()));
+        }
     }
 
   return retval;
@@ -166,6 +191,16 @@ Grob::get_system () const
   return 0;
 }
 
+/* This version of get_system is more reliable than this->get_system ()
+   before line-breaking has been done, at which point there is only
+   one system in the whole score and we can find it just by following
+   parent pointers. */
+System *
+Grob::get_system(Grob *me)
+{
+  Grob *p = me->get_parent (X_AXIS);
+  return p ? get_system (p) : dynamic_cast<System *>(me);
+}
 
 void
 Grob::handle_broken_dependencies ()
@@ -426,10 +461,7 @@ Grob::extent (Grob *refp, Axis a) const
 Interval
 Grob::pure_height (Grob *refp, int start, int end)
 {
-  SCM proc = get_property_data (ly_symbol2scm ("Y-extent"));
-  SCM iv_scm = call_pure_function (proc,
-                                  scm_list_1 (self_scm ()),
-                                  start, end);
+  SCM iv_scm = get_pure_property ("Y-extent", start, end);
   Interval iv = robust_scm2interval (iv_scm, Interval (0, 0));
   Real offset = pure_relative_y_coordinate (refp, start, end);
 
@@ -460,6 +492,19 @@ Grob::spanned_rank_interval () const
   return Interval_t<int> (-1, 0);
 }
 
+bool
+Grob::pure_is_visible (int /* start */, int /* end */) const
+{
+  return true;
+}
+
+/* Sort grobs according to their starting column. */
+bool
+Grob::less (Grob *g1, Grob *g2)
+{
+  return g1->spanned_rank_interval ()[LEFT] < g2->spanned_rank_interval ()[LEFT];
+}
+
 /****************************************************************
   REFPOINTS
 ****************************************************************/
@@ -533,6 +578,9 @@ Grob::fixup_refpoint ()
 void
 Grob::warning (string s) const
 {
+  if (get_program_option ("warning-as-error"))
+    error (s);
+
   SCM cause = self_scm ();
   while (Grob *g = unsmob_grob (cause))
     cause = g->get_property ("cause");
@@ -559,6 +607,9 @@ Grob::name () const
 void
 Grob::programming_error (string s) const
 {
+  if (get_program_option ("warning-as-error"))
+    error (s);
+
   SCM cause = self_scm ();
   while (Grob *g = unsmob_grob (cause))
     cause = g->get_property ("cause");
@@ -569,7 +620,7 @@ Grob::programming_error (string s) const
   if (Music *m = unsmob_music (cause))
     m->origin ()->message (s);
   else if (Stream_event *ev = unsmob_stream_event (cause))
-    ev->origin ()->warning (s);
+    ev->origin ()->message (s);
   else
     ::message (s);
 }
@@ -606,8 +657,8 @@ ADD_INTERFACE (Grob,
               " properties are variables that are specific to one grob."
               "  Typically, lists of other objects, or results from"
               " computations are stored in mutable properties.  In"
-              " particular, every call to @code{set-grob-property} (or its"
-              " C++ equivalent) sets a mutable property.\n"
+              " particular, every call to @code{ly:grob-set-property!}"
+              " (or its C++ equivalent) sets a mutable property.\n"
               "\n"
               "The properties @code{after-line-breaking} and"
               " @code{before-line-breaking} are dummies that are not"
@@ -643,6 +694,7 @@ ADD_INTERFACE (Grob,
               "staff-symbol "
               "stencil "
               "transparent "
+              "whiteout "
               );
 
 /****************************************************************
@@ -740,3 +792,18 @@ robust_relative_extent (Grob *me, Grob *refpoint, Axis a)
   return ext;
 }
 
+// Checks whether there is a vertical alignment in the chain of
+// parents between this and commony.
+bool
+Grob::check_cross_staff (Grob *commony)
+{
+  if (Align_interface::has_interface (commony))
+    return true;
+
+  for (Grob *g = this; g && g != commony; g = g->get_parent (Y_AXIS))
+    if (Align_interface::has_interface (g))
+      return true;
+
+  return false;
+}
+