From 8825155b467098cb14a0f23af079bda62da4f5d2 Mon Sep 17 00:00:00 2001
From: rj <rj@rj>
Date: Wed, 9 Oct 2013 19:45:37 +0200
Subject: changed track drag to move instead of swap

---
 ChangeLog             |  2 ++
 muse2/muse/seqmsg.cpp |  2 +-
 muse2/muse/song.cpp   | 29 +++++++++++++++++++++--------
 muse2/muse/song.h     |  2 +-
 muse2/muse/undo.cpp   | 29 +++++++++++++++++------------
 muse2/muse/undo.h     |  2 +-
 6 files changed, 43 insertions(+), 23 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 3290c581..e7d8debd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,5 @@
+09.10.2013:
+         - Changed track dragging to move instead of swap (rj)
 08.10.2013:
          - Added line drawing of tempo in graphical master track editor (rj)
          - Fixed bug (issue #342 Moving Aux sends crashes muse) (rj)
diff --git a/muse2/muse/seqmsg.cpp b/muse2/muse/seqmsg.cpp
index 669aff9d..0a4e6160 100644
--- a/muse2/muse/seqmsg.cpp
+++ b/muse2/muse/seqmsg.cpp
@@ -739,7 +739,7 @@ void Audio::msgMoveTrack(int idx1, int idx2, bool doUndoFlag)
       int n = MusEGlobal::song->tracks()->size();
       if (idx1 >= n || idx2 >= n)   // sanity check
             return;
-      MusEGlobal::song->applyOperation(UndoOp(UndoOp::SwapTrack, idx1, idx2), doUndoFlag);
+      MusEGlobal::song->applyOperation(UndoOp(UndoOp::MoveTrack, idx1, idx2), doUndoFlag);
       }
 
 //---------------------------------------------------------
diff --git a/muse2/muse/song.cpp b/muse2/muse/song.cpp
index 3c5b8fa7..5d821301 100644
--- a/muse2/muse/song.cpp
+++ b/muse2/muse/song.cpp
@@ -1062,16 +1062,29 @@ void Song::setStopPlay(bool f)
       }
 
 //---------------------------------------------------------
-//   swapTracks
+//   moveTrack
+//
 //---------------------------------------------------------
 
-void Song::swapTracks(int i1, int i2)
-      {
-      addUndo(UndoOp(UndoOp::SwapTrack, i1, i2));
-      Track* track = _tracks[i1];
-      _tracks[i1]  = _tracks[i2];
-      _tracks[i2]  = track;
-      }
+void Song::moveTrack(int fromI, int toI)
+{
+  //addUndo(UndoOp(UndoOp::MoveTrack, fromI, toI));
+  Track* toTrack = _tracks[toI];
+  Track* fromTrack = _tracks[fromI];
+  for(TrackList::iterator toIt = _tracks.begin(); toIt != _tracks.end(); ++toIt)
+  {
+    if ((*toIt) == toTrack) {
+        for(TrackList::iterator fromIt = _tracks.begin(); fromIt != _tracks.end(); ++fromIt)
+        {
+            if ((*fromIt) == fromTrack) {
+                _tracks.erase(fromIt);
+                _tracks.insert(toIt,fromTrack);
+            }
+        }
+
+    }
+  }
+}
 
 //---------------------------------------------------------
 //   seekTo
diff --git a/muse2/muse/song.h b/muse2/muse/song.h
index a25f1d55..59f2e9d1 100644
--- a/muse2/muse/song.h
+++ b/muse2/muse/song.h
@@ -325,7 +325,7 @@ class Song : public QObject {
       void removeTrack3(Track* track);
       MidiTrack* findTrack(const Part* part) const;
       Track* findTrack(const QString& name) const;
-      void swapTracks(int i1, int i2);
+      void moveTrack(int i1, int i2);
       void setRecordFlag(Track*, bool);
       void insertTrack0(Track*, int idx);
       void insertTrack1(Track*, int idx);
diff --git a/muse2/muse/undo.cpp b/muse2/muse/undo.cpp
index 103b47ac..197c1f2a 100644
--- a/muse2/muse/undo.cpp
+++ b/muse2/muse/undo.cpp
@@ -59,7 +59,7 @@ const char* UndoOp::typeName()
             "AddSig", "DeleteSig",
             "AddKey", "DeleteKey",
             "ModifyTrackName", "ModifyTrackChannel",
-            "SwapTrack", 
+            "MoveTrack",
             "ModifyClip", "ModifyMarker",
             "ModifySongLen", "DoNothing"
             };
@@ -106,7 +106,7 @@ void UndoOp::dump()
             case AddTempo:
             case DeleteTempo:
             case AddSig:
-            case SwapTrack:
+            case MoveTrack:
             case DeleteSig:
             case ModifyClip:
             case ModifyMarker:
@@ -469,12 +469,14 @@ void Song::revertOperationGroup2(Undo& operations)
                         updateFlags |= SC_TRACK_INSERTED;
                         break;
                         
-                  case UndoOp::SwapTrack:
+                  case UndoOp::MoveTrack:
                         {
-                        updateFlags |= SC_TRACK_MODIFIED;
-                        Track* track  = _tracks[i->a];
-                        _tracks[i->a] = _tracks[i->b];
-                        _tracks[i->b] = track;
+                        moveTrack(i->b, i->a);
+                        if (i->b > i->a)
+                          i->a++;
+                        else
+                          i->b--;
+
                         updateFlags |= SC_TRACK_MODIFIED;
                         }
                         break;
@@ -593,11 +595,14 @@ void Song::executeOperationGroup2(Undo& operations)
                         break;
                         
                         
-                  case UndoOp::SwapTrack:
+                  case UndoOp::MoveTrack:
                         {
-                        Track* track  = _tracks[i->a];
-                        _tracks[i->a] = _tracks[i->b];
-                        _tracks[i->b] = track;
+                        moveTrack(i->a, i->b);
+                        if (i->a > i->b){
+                          i->b++;
+                        }
+                        else
+                          i->a--;
                         updateFlags |= SC_TRACK_MODIFIED;
                         }
                         break;
@@ -701,7 +706,7 @@ UndoOp::UndoOp(UndoType type_, int a_, int b_, int c_)
       assert(type_==AddKey || type_==DeleteKey ||
              type_==AddTempo || type_==DeleteTempo ||
              type_==AddSig || type_==DeleteSig ||
-             type_==ModifySongLen || type_==SwapTrack);
+             type_==ModifySongLen || type_==MoveTrack);
       
       type = type_;
       a  = a_;
diff --git a/muse2/muse/undo.h b/muse2/muse/undo.h
index f83ce491..2696de39 100644
--- a/muse2/muse/undo.h
+++ b/muse2/muse/undo.h
@@ -53,7 +53,7 @@ struct UndoOp {
             AddSig,   DeleteSig,
             AddKey,   DeleteKey,
             ModifyTrackName, ModifyTrackChannel,
-            SwapTrack,
+            MoveTrack,
             ModifyClip,
             ModifyMarker,
             ModifySongLen, // a = new len, b = old len
-- 
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