From: fred <fred>
Date: Fri, 24 Jul 1998 23:04:57 +0000 (+0000)
Subject: lilypond-1.0.1
X-Git-Tag: release/1.5.59~5887
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=d2c3ce7c5eee2b1bcadf06510bc64dc8c64f7771;p=lilypond.git

lilypond-1.0.1
---

diff --git a/lily/clef-engraver.cc b/lily/clef-engraver.cc
new file mode 100644
index 0000000000..f6ebe58409
--- /dev/null
+++ b/lily/clef-engraver.cc
@@ -0,0 +1,256 @@
+/*
+  clef.cc -- implement Clef_engraver
+
+  source file of the GNU LilyPond music typesetter
+
+  (c)  1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>,
+  Mats Bengtsson <matsb@s3.kth.se>
+*/
+
+#include <ctype.h>
+#include "bar.hh"
+#include "clef-engraver.hh"
+#include "clef-item.hh"
+#include "debug.hh"
+#include "command-request.hh"
+#include "time-description.hh"
+
+
+#include "note-head.hh"
+#include "key-item.hh"
+#include "local-key-item.hh"
+
+Clef_engraver::Clef_engraver()
+{
+  clef_p_ = 0;
+  clef_req_l_ = 0;
+  clef_type_str_ = "";
+  c0_position_i_ = 0;
+  clef_position_i_ = 0;
+  octave_dir_ = CENTER;
+}
+
+/*
+  Ugh.  Should have support for Dictionaries in mudela.
+ */
+bool
+Clef_engraver::set_type (String s)
+{
+  if (s.right_str(2) == "_8") // Down one octave
+    {
+      octave_dir_ = DOWN;
+      s = s.left_str(s.length_i() - 2);
+    }
+  else if (s.right_str(2) == "^8") // Up one octave
+    {
+      octave_dir_ = UP;
+      s = s.left_str(s.length_i() - 2);
+    }
+  else
+    octave_dir_ = CENTER;
+  if (s == "treble" ||
+      s == "violin" ||
+      s == "G" || s == "G2")
+    {
+      clef_type_str_ = "violin";
+      clef_position_i_ = -2;
+    }
+  else if (s == "french")
+    {
+      clef_type_str_ = "violin";
+      clef_position_i_ = -4;
+    }
+  else if (s == "soprano")
+    {
+      clef_type_str_ = "alto";
+      clef_position_i_ = -4;
+    }
+  else if (s == "mezzosoprano")
+    {
+      clef_type_str_ = "alto";
+      clef_position_i_ = -2;
+    }
+  else if (s == "alto")
+    {
+      clef_type_str_ = "alto";
+      clef_position_i_ = 0;
+    }
+  else if (s == "tenor")
+    {
+      clef_type_str_ = "alto";
+      clef_position_i_ = 2;
+    }
+  else if (s == "baritone")
+    {
+      clef_type_str_ = "alto";
+      clef_position_i_ = 4;
+    }
+  else if (s == "varbaritone")
+    {
+      clef_type_str_ = "bass";
+      clef_position_i_ = 0;
+    }
+  else if (s == "bass" || s == "F")
+    {
+      clef_type_str_ = "bass";
+      clef_position_i_ = 2;
+    }
+  else if (s == "subbass")
+    {
+      clef_type_str_ = "bass";
+      clef_position_i_ = 4;
+    }
+  else 
+    {
+      switch(toupper (s[0]))
+	{
+	case 'F': 
+	  clef_type_str_ = "bass";
+	  break;
+	case  'G':
+	  clef_type_str_ = "violin";
+	  break;
+	case 'C': 
+	  clef_type_str_ = "alto";
+	  break;
+	default:
+	  return false;
+	}
+      clef_position_i_ = 2 * (s[1] - '0') - 6;
+    }
+  if (clef_type_str_ == "violin")
+    c0_position_i_ = clef_position_i_ - 4;
+  else if (clef_type_str_ == "alto")
+    c0_position_i_ = clef_position_i_;
+  else if (clef_type_str_ == "bass")
+    c0_position_i_ = clef_position_i_ + 4;
+  else
+    assert (false);
+
+      
+  c0_position_i_ -= (int) octave_dir_ * 7;
+  
+  return true;
+}
+
+void
+Clef_engraver::read_req (Clef_change_req*c_l)
+{
+  if (!set_type (c_l->clef_str_))
+    c_l->error (_ ("unknown clef type "));
+}
+
+
+/** 
+  Generate a clef at the start of a measure. (when you see a Bar,
+  ie. a breakpoint) 
+  */
+void
+Clef_engraver::acknowledge_element (Score_element_info info)
+{
+  if (info.elem_l_->is_type_b (Bar::static_name ()) 
+      && clef_type_str_.length_i())
+    {
+      create_clef();
+      if (!clef_req_l_)
+	clef_p_->default_b_ = true;
+    }
+
+  /* ugh; should make Clef_referenced baseclass */
+  Item * it_l =info.elem_l_->access_Item ();
+if (it_l)
+  {
+  if (it_l->is_type_b (Note_head::static_name ()))
+    {
+      Note_head * h = (Note_head*)it_l;
+      h->position_i_ += c0_position_i_;
+    }
+  else if (it_l->is_type_b (Local_key_item::static_name ()))
+    {
+      Local_key_item *i = (Local_key_item*)it_l;
+      i->c0_position_i_ =c0_position_i_;
+    }
+  else if (it_l->is_type_b (Key_item::static_name ()))
+    {
+      Key_item *k = (Key_item*)it_l;
+      k-> set_c_position (c0_position_i_);
+    }
+  } 
+}
+
+void
+Clef_engraver::do_creation_processing()
+{
+  Scalar def = get_property ("defaultclef");
+  if (def.operator bool ()) // egcs: Scalar to bool is ambiguous
+    set_type (def);
+  if (clef_type_str_.length_i ())
+    { 
+      create_clef();
+      clef_p_->default_b_ = false;
+    }
+}
+
+bool
+Clef_engraver::do_try_request (Request * r_l)
+{
+  Command_req* creq_l= r_l->access_Command_req ();
+  if (!creq_l || !creq_l->access_Clef_change_req ())
+    return false;
+
+  clef_req_l_ = creq_l->access_Clef_change_req ();
+  read_req (clef_req_l_);
+  return true;
+}
+
+void
+Clef_engraver::create_clef()
+{
+  if (!clef_p_)
+    {
+      clef_p_ = new Clef_item;
+      clef_p_->break_priority_i_ = -2; // ugh
+      announce_element (Score_element_info (clef_p_,clef_req_l_));
+    }
+  clef_p_->read (*this);
+}
+
+void
+Clef_engraver::do_process_requests()
+{
+  if (clef_req_l_)
+    {
+      create_clef();
+      clef_p_->default_b_ = false;
+    }
+}
+
+void
+Clef_engraver::do_pre_move_processing()
+{
+  if (clef_p_)
+    {
+      typeset_element (clef_p_);
+      clef_p_ = 0;
+    }
+}
+void
+Clef_engraver::do_post_move_processing()
+{
+  clef_req_l_ = 0;
+}
+
+void
+Clef_engraver::do_removal_processing()
+{
+  if (clef_p_)
+    {
+      clef_p_->unlink ();	
+      delete clef_p_;
+      clef_p_ =0;
+    }
+}
+
+
+IMPLEMENT_IS_TYPE_B1(Clef_engraver,Engraver);
+ADD_THIS_TRANSLATOR(Clef_engraver);