add new files

2 files changed, 170 insertions, 0 deletions

diff --git a/muse/muse/midiedit/midicmd.cpp b/muse/muse/midiedit/midicmd.cpp
new file mode 100644
index 00000000..fd3f29ed
--- /dev/null
+++ b/muse/muse/midiedit/midicmd.cpp
@@ -0,0 +1,118 @@
+//=============================================================================
+//  MusE
+//  Linux Music Editor
+//  $Id:$
+//
+//  Copyright (C) 2002-2006 by Werner Schweer and others
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License version 2.
+//
+//  This program 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 this program; if not, write to the Free Software
+//  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//=============================================================================
+
+#include "midicmd.h"
+#include "song.h"
+#include "widgets/gatetime.h"
+#include "audio.h"
+
+//---------------------------------------------------------
+//   processEvents
+//---------------------------------------------------------
+
+void MidiCmd::processEvents(CItemList* items)
+      {
+      modified = 0;
+      song->startUndo();
+      range = 0; //editor->applyTo();
+      process(items, &range);
+//      editor->setApplyTo(range);
+      song->endUndo(modified);
+      }
+
+//---------------------------------------------------------
+//   eventInRange
+//---------------------------------------------------------
+
+bool MidiCmd::itemInRange(CItem* item)
+      {
+      unsigned tick = item->event.tick();
+      bool selected = item->isSelected();
+      bool inLoop   = (tick >= song->lpos()) && (tick < song->rpos());
+      return (
+            (range == 0)
+         || (range == 1 && selected)
+         || (range == 2 && inLoop)
+         || (range == 3 && selected && inLoop)
+         );
+      }
+
+//---------------------------------------------------------
+//   changeEvent
+//---------------------------------------------------------
+
+void MidiCmd::changeEvent(Event oldEvent, Event newEvent, Part* part)
+      {
+      audio->msgChangeEvent(oldEvent, newEvent, part, false);
+      modified = SC_EVENT_MODIFIED;
+      }
+
+//==================================================================
+
+//---------------------------------------------------------
+//   ModifyGateTimeCmd
+//---------------------------------------------------------
+
+class ModifyGateTimeCmd : public MidiCmd
+      {
+   protected:
+      virtual void process(CItemList* items, int* range);
+
+   public:
+      ModifyGateTimeCmd() {}
+      };
+
+//---------------------------------------------------------
+//   process
+//    return true if events are modified
+//---------------------------------------------------------
+
+void ModifyGateTimeCmd::process(CItemList* items, int* range)
+      {
+      GateTime w(0);
+      w.setRange(*range);
+      if (!w.exec())
+            return;
+      *range     = w.range();        // all, selected, looped, sel+loop
+      int rate   = w.rateVal();
+      int offset = w.offsetVal();
+
+      for (iCItem k = items->begin(); k != items->end(); ++k) {
+            CItem* item = k->second;
+            Event event = item->event;
+            if (event.type() != Note)
+                  continue;
+
+            if (itemInRange(item)) {
+                  unsigned len   = event.lenTick();
+                  len = rate ? (len * 100) / rate : 1;
+                  len += offset;
+                  if (len <= 1)
+                        len = 1;
+
+                  if (event.lenTick() != len) {
+                        Event newEvent = event.clone();
+                        newEvent.setLenTick(len);
+                        changeEvent(event, newEvent, item->part);
+                        }
+                  }
+            }
+      }
+
diff --git a/muse/muse/midiedit/midicmd.h b/muse/muse/midiedit/midicmd.h
new file mode 100644
index 00000000..2cfabb26
--- /dev/null
+++ b/muse/muse/midiedit/midicmd.h
@@ -0,0 +1,52 @@
+//=============================================================================
+//  MusE
+//  Linux Music Editor
+//  $Id:$
+//
+//  Copyright (C) 2002-2006 by Werner Schweer and others
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License version 2.
+//
+//  This program 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 this program; if not, write to the Free Software
+//  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//=============================================================================
+
+#ifndef __MIDICMD_H__
+#define __MIDICMD_H__
+
+#include "citem.h"
+
+//---------------------------------------------------------
+//   MidiCmd
+//    abstract base class for midi commands
+//---------------------------------------------------------
+
+class MidiCmd {
+      int modified;
+
+   protected:
+      int range;
+
+      // convenience classes for derived classes
+      bool itemInRange(CItem* item);
+      void changeEvent(Event oldEvent, Event newEvent, Part* part);
+
+      // virtual functions provided by derived classes
+      virtual void process(CItemList*, int*) = 0;
+
+   public:
+      MidiCmd() {}
+      virtual ~MidiCmd() {}
+      void processEvents(CItemList*);
+      };
+
+
+#endif
+