Let sample tracks play from any song position (#3133)

* play sampletracks from any song position

* take care of TCO length

* TCOs shouldn't be updated when SE window is resized

* take care of zooming level

* takes care on all song position changes and mute/solo tracks now

* playes the sample only within the buffer limits

* takes care of time signature changes

* some minor code improvements (zapashcanon)

* loopback one tick earlier

* minor code changes

* get rid off clicks by resize and scrolling song editor

* removes playhandle by remove TCO

* minor bugs on manipulating TCOs in Song Editor

* update on add sample by playing

* white spaces 1

include/Editor.h

@@ -43,7 +43,7 @@ class Editor : public QMainWindow
 	Q_OBJECT
 public:
 	void setPauseIcon(bool displayPauseIcon=true);
-
+	QAction *playAction() const;
 protected:
 	DropToolBar * addDropToolBarToTop(QString const & windowTitle);
 	DropToolBar * addDropToolBar(Qt::ToolBarArea whereToAdd, QString const & windowTitle);

include/SampleTrack.h

@@ -59,20 +59,27 @@ public:
 	}
 
 	MidiTime sampleLength() const;
-
+	void setSampleStartFrame( f_cnt_t startFrame );
+	void setSamplePlayLength( f_cnt_t length );
 	virtual TrackContentObjectView * createView( TrackView * _tv );
 
 
+	bool isPlaying() const;
+	void setIsPlaying(bool isPlaying);
+
 public slots:
 	void setSampleBuffer( SampleBuffer* sb );
 	void setSampleFile( const QString & _sf );
-	void updateLength( bpm_t = 0 );
+	void updateLength();
 	void toggleRecord();
+	void playbackPositionChanged();
+	void updateTrackTcos();
 
 
 private:
 	SampleBuffer* m_sampleBuffer;
 	BoolModel m_recordModel;
+	bool m_isPlaying;
 
 
 	friend class SampleTCOView;
@@ -102,6 +109,7 @@ public slots:
 protected:
 	virtual void contextMenuEvent( QContextMenuEvent * _cme );
 	virtual void mousePressEvent( QMouseEvent * _me );
+	virtual void mouseReleaseEvent( QMouseEvent * _me );
 	virtual void dragEnterEvent( QDragEnterEvent * _dee );
 	virtual void dropEvent( QDropEvent * _de );
 	virtual void mouseDoubleClickEvent( QMouseEvent * );
@@ -143,6 +151,8 @@ public:
 		return "sampletrack";
 	}
 
+public slots:
+	void updateTcos();
 
 private:
 	FloatModel m_volumeModel;

include/Song.h

@@ -381,6 +381,7 @@ signals:
 	void timeSignatureChanged( int oldTicksPerTact, int ticksPerTact );
 	void controllerAdded( Controller * );
 	void controllerRemoved( Controller * );
+	void updateSampleTracks();
 
 } ;
 

include/SongEditor.h

@@ -71,6 +71,8 @@ public:
 	void saveSettings( QDomDocument& doc, QDomElement& element );
 	void loadSettings( const QDomElement& element );
 
+	ComboBoxModel *zoomingModel() const;
+
 public slots:
 	void scrolled( int new_pos );
 
@@ -158,6 +160,9 @@ protected slots:
 
 	void adjustUiAfterProjectLoad();
 
+signals:
+	void playTriggered();
+
 private:
 	QAction* m_addBBTrackAction;
 	QAction* m_addSampleTrackAction;

include/TimeLineWidget.h

@@ -241,6 +241,7 @@ private:
 signals:
 	void positionChanged( const MidiTime & _t );
 	void loopPointStateLoaded( int _n );
+	void positionMarkerMoved();
 
 } ;
 

include/Track.h

@@ -577,6 +577,8 @@ public:
 		return m_processingLock.tryLock();
 	}
 
+	BoolModel* getMutedModel();
+
 public slots:
 	virtual void setName( const QString & newName )
 	{