From aad3d78d3ec7e4916028059cb7b0023eedbaa095 Mon Sep 17 00:00:00 2001
From: Florian Jung <flo@windfisch.org>
Date: Wed, 28 Aug 2013 00:40:01 +0200
Subject: added "similar"-comparison to Event(Base)

---
 muse2/muse/event.cpp     |  4 ++++
 muse2/muse/event.h       |  3 +++
 muse2/muse/eventbase.h   |  2 ++
 muse2/muse/eventlist.cpp | 23 +++++++++++++++++++++++
 muse2/muse/midievent.cpp | 15 +++++++++++++++
 muse2/muse/midievent.h   |  2 ++
 muse2/muse/waveevent.cpp |  9 +++++++++
 muse2/muse/waveevent.h   |  2 ++
 8 files changed, 60 insertions(+)

diff --git a/muse2/muse/event.cpp b/muse2/muse/event.cpp
index 065a49cf..32b72277 100644
--- a/muse2/muse/event.cpp
+++ b/muse2/muse/event.cpp
@@ -179,6 +179,10 @@ Event& Event::operator=(const Event& e) {
 bool Event::operator==(const Event& e) const {
             return ev == e.ev;
             }
+bool Event::isSimilarTo(const Event& other) const
+{
+		return ev->isSimilarTo(*other.ev);
+}
 
 int Event::getRefCount() const    { return ev->getRefCount(); }
 bool Event::selected() const      { return ev->_selected; }
diff --git a/muse2/muse/event.h b/muse2/muse/event.h
index e512e03d..b2f5a50a 100644
--- a/muse2/muse/event.h
+++ b/muse2/muse/event.h
@@ -64,6 +64,7 @@ class Event {
       void setType(EventType t);
       Event& operator=(const Event& e);
       bool operator==(const Event& e) const;
+      bool isSimilarTo(const Event& other) const;
 
       int getRefCount() const;
       bool selected() const;
@@ -137,6 +138,8 @@ class EventList : public EL {
    public:
       ciEvent find(const Event&) const;
       iEvent find(const Event&);
+      ciEvent findSimilar(const Event&) const;
+      iEvent findSimilar(const Event&);
       iEvent add(Event event);
       void move(Event& event, unsigned tick);
       void dump() const;
diff --git a/muse2/muse/eventbase.h b/muse2/muse/eventbase.h
index adf7da97..92e91761 100644
--- a/muse2/muse/eventbase.h
+++ b/muse2/muse/eventbase.h
@@ -56,6 +56,8 @@ class EventBase : public PosLen {
       void setSelected(bool val) { _selected = val; }
 
       void move(int offset);
+      
+      virtual bool isSimilarTo(const EventBase& other) const = 0;
 
       virtual void read(Xml&) = 0;
       virtual void write(int, Xml&, const Pos& offset, bool forcePath = false) const = 0;
diff --git a/muse2/muse/eventlist.cpp b/muse2/muse/eventlist.cpp
index ecc7f452..80180ab7 100644
--- a/muse2/muse/eventlist.cpp
+++ b/muse2/muse/eventlist.cpp
@@ -151,6 +151,29 @@ ciEvent EventList::find(const Event& event) const
       return end();
       }
 
+iEvent EventList::findSimilar(const Event& event)
+{
+      std::pair<iEvent,iEvent> range = equal_range(event.type() == Wave ? event.frame() : event.tick());
+
+      for (iEvent i = range.first; i != range.second; ++i) {
+            if (i->second.isSimilarTo(event))
+                  return i;
+            }
+      return end();
+}
+
+ciEvent EventList::findSimilar(const Event& event) const
+      {
+      EventRange range = equal_range(event.type() == Wave ? event.frame() : event.tick());
+
+      
+      for (ciEvent i = range.first; i != range.second; ++i) {
+            if (i->second.isSimilarTo(event))
+                  return i;
+            }
+      return end();
+      }
+
 //---------------------------------------------------------
 //   dump
 //---------------------------------------------------------
diff --git a/muse2/muse/midievent.cpp b/muse2/muse/midievent.cpp
index 5330b518..fb6517cd 100644
--- a/muse2/muse/midievent.cpp
+++ b/muse2/muse/midievent.cpp
@@ -41,6 +41,21 @@ MidiEventBase::MidiEventBase(EventType t)
       c = 0;
       }
 
+bool MidiEventBase::isSimilarTo(const EventBase& other_) const
+{
+	const MidiEventBase* other = dynamic_cast<const MidiEventBase*>(&other_);
+	if (other==NULL) // dynamic cast hsa failed: "other_" is not of type MidiEventBase.
+		return false;
+	
+	if ((a==other->a && b==other->b && c==other->c && edata.dataLen==other->edata.dataLen && this->PosLen::operator==(*other)) == false)
+		return false;
+	
+	if (edata.dataLen > 0)
+		return (memcmp(edata.data, other->edata.data, edata.dataLen) == 0);
+	else
+		return true; // no data equals no data.
+}
+
 //---------------------------------------------------------
 //   MidiEventBase::mid
 //---------------------------------------------------------
diff --git a/muse2/muse/midievent.h b/muse2/muse/midievent.h
index 8aa38f0e..dba2d727 100644
--- a/muse2/muse/midievent.h
+++ b/muse2/muse/midievent.h
@@ -41,6 +41,8 @@ class MidiEventBase : public EventBase {
    public:
       MidiEventBase(EventType t);
       virtual ~MidiEventBase() {}
+      
+      virtual bool isSimilarTo(const EventBase& other) const;
 
       virtual bool isNote() const                   { return type() == Note; }
       virtual bool isNoteOff() const;
diff --git a/muse2/muse/waveevent.cpp b/muse2/muse/waveevent.cpp
index 842e40b9..24be2d01 100644
--- a/muse2/muse/waveevent.cpp
+++ b/muse2/muse/waveevent.cpp
@@ -58,6 +58,15 @@ EventBase* WaveEventBase::clone() const
   return new WaveEventBase(*this); 
 }
 
+bool WaveEventBase::isSimilarTo(const EventBase& other_) const
+{
+	const WaveEventBase* other = dynamic_cast<const WaveEventBase*>(&other_);
+	if (other==NULL) // dynamic cast hsa failed: "other_" is not of type WaveEventBase.
+		return false;
+	
+	return f.dirPath()==other->f.dirPath() && _spos==other->_spos && this->PosLen::operator==(*other);
+}
+
 //---------------------------------------------------------
 //   WaveEvent::mid
 //---------------------------------------------------------
diff --git a/muse2/muse/waveevent.h b/muse2/muse/waveevent.h
index 4174e3f5..d11803c7 100644
--- a/muse2/muse/waveevent.h
+++ b/muse2/muse/waveevent.h
@@ -49,6 +49,8 @@ class WaveEventBase : public EventBase {
    public:
       WaveEventBase(EventType t);
       virtual ~WaveEventBase() {}
+      
+      virtual bool isSimilarTo(const EventBase& other) const;
 
       virtual void read(Xml&);
       virtual void write(int, Xml&, const Pos& offset, bool forcePath = false) const;
-- 
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