Support FX Mixer for sample tracks and add controls to sample track window (#3866)

This work is based on https://github.com/LMMS/lmms/pull/3632 by @grejppi.

include/FxLineLcdSpinBox.h

@@ -0,0 +1,53 @@
+/*
+ * FxLineLcdSpinBox.h - a specialization of LcdSpnBox for setting FX channels
+ *
+ * Copyright (c) 2004-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ *
+ * This file is part of LMMS - https://lmms.io
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * 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 (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef FX_LINE_LCD_SPIN_BOX_H
+#define FX_LINE_LCD_SPIN_BOX_H
+
+#include "LcdSpinBox.h"
+
+class TrackView;
+
+
+class FxLineLcdSpinBox : public LcdSpinBox
+{
+	Q_OBJECT
+public:
+	FxLineLcdSpinBox(int numDigits, QWidget * parent, const QString& name, TrackView * tv = NULL) :
+		LcdSpinBox(numDigits, parent, name), m_tv(tv)
+	{}
+	virtual ~FxLineLcdSpinBox() {}
+
+	void setTrackView(TrackView * tv);
+
+protected:
+	virtual void mouseDoubleClickEvent(QMouseEvent* event);
+	virtual void contextMenuEvent(QContextMenuEvent* event);
+
+private:
+	TrackView * m_tv;
+
+};
+
+#endif

include/InstrumentTrack.h

@@ -52,6 +52,7 @@ class InstrumentTrackWindow;
 class InstrumentMidiIOView;
 class InstrumentMiscView;
 class Knob;
+class FxLineLcdSpinBox;
 class LcdSpinBox;
 class LeftRightNav;
 class midiPortMenu;
@@ -440,7 +441,7 @@ private:
 	QLabel * m_pitchLabel;
 	LcdSpinBox* m_pitchRangeSpinBox;
 	QLabel * m_pitchRangeLabel;
-	LcdSpinBox * m_effectChannelNumber;
+	FxLineLcdSpinBox * m_effectChannelNumber;
 
 
 

include/SampleTrack.h

@@ -26,13 +26,19 @@
 #define SAMPLE_TRACK_H
 
 #include <QDialog>
+#include <QLayout>
 
 #include "AudioPort.h"
+#include "FxMixer.h"
+#include "FxLineLcdSpinBox.h"
 #include "Track.h"
 
 class EffectRackView;
 class Knob;
 class SampleBuffer;
+class SampleTrackWindow;
+class TrackLabelButton;
+class QLineEdit;
 
 
 class SampleTCO : public TrackContentObject
@@ -140,6 +146,11 @@ public:
 							QDomElement & _parent );
 	virtual void loadTrackSpecificSettings( const QDomElement & _this );
 
+	inline IntModel * effectChannelModel()
+	{
+		return &m_effectChannelModel;
+	}
+
 	inline AudioPort * audioPort()
 	{
 		return &m_audioPort;
@@ -153,15 +164,18 @@ public:
 public slots:
 	void updateTcos();
 	void setPlayingTcos( bool isPlaying );
+	void updateEffectChannel();
 
 private:
 	FloatModel m_volumeModel;
 	FloatModel m_panningModel;
+	IntModel m_effectChannelModel;
 	AudioPort m_audioPort;
 
 
 
 	friend class SampleTrackView;
+	friend class SampleTrackWindow;
 
 } ;
 
@@ -174,6 +188,24 @@ public:
 	SampleTrackView( SampleTrack* Track, TrackContainerView* tcv );
 	virtual ~SampleTrackView();
 
+	SampleTrackWindow * getSampleTrackWindow()
+	{
+		return m_window;
+	}
+
+	SampleTrack * model()
+	{
+		return castModel<SampleTrack>();
+	}
+
+	const SampleTrack * model() const
+	{
+		return castModel<SampleTrack>();
+	}
+
+
+	virtual QMenu * createFxMenu( QString title, QString newFxLabel );
+
 
 public slots:
 	void showEffects();
@@ -187,12 +219,77 @@ protected:
 	}
 
 
+private slots:
+	void assignFxLine( int channelIndex );
+	void createFxLine();
+
+
 private:
-	EffectRackView * m_effectRack;
-	QWidget * m_effWindow;
+	SampleTrackWindow * m_window;
 	Knob * m_volumeKnob;
 	Knob * m_panningKnob;
 
+	TrackLabelButton * m_tlb;
+
+
+	friend class SampleTrackWindow;
+
+} ;
+
+
+
+class SampleTrackWindow : public QWidget, public ModelView, public SerializingObjectHook
+{
+	Q_OBJECT
+public:
+	SampleTrackWindow(SampleTrackView * tv);
+	virtual ~SampleTrackWindow();
+
+	SampleTrack * model()
+	{
+		return castModel<SampleTrack>();
+	}
+
+	const SampleTrack * model() const
+	{
+		return castModel<SampleTrack>();
+	}
+
+	void setSampleTrackView(SampleTrackView * tv);
+
+	SampleTrackView *sampleTrackView()
+	{
+		return m_stv;
+	}
+
+
+public slots:
+	void textChanged(const QString & new_name);
+	void toggleVisibility(bool on);
+	void updateName();
+
+
+protected:
+	// capture close-events for toggling sample-track-button
+	virtual void closeEvent(QCloseEvent * ce);
+
+	virtual void saveSettings(QDomDocument & doc, QDomElement & element);
+	virtual void loadSettings(const QDomElement & element);
+
+private:
+	virtual void modelChanged();
+
+	SampleTrack * m_track;
+	SampleTrackView * m_stv;
+
+	// widgets on the top of an sample-track-window
+	QLineEdit * m_nameLineEdit;
+	Knob * m_volumeKnob;
+	Knob * m_panningKnob;
+	FxLineLcdSpinBox * m_effectChannelNumber;
+
+	EffectRackView * m_effectRack;
+
 } ;
 
 

include/Track.h

@@ -675,6 +675,10 @@ public:
 
 	virtual void update();
 
+	// Create a menu for assigning/creating channels for this track
+	// Currently instrument track and sample track supports it
+	virtual QMenu * createFxMenu(QString title, QString newFxLabel);
+
 
 public slots:
 	virtual bool close();