MixerView.h

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/*
 * MixerView.h - effect-mixer-view for LMMS
 *
 * Copyright (c) 2008-2014 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 LMMS_GUI_MIXER_VIEW_H
#define LMMS_GUI_MIXER_VIEW_H
 
#include <QWidget>
 
#include "MixerChannelView.h"
#include "ModelView.h"
#include "SerializingObject.h"
 
class QDomDocument;  // IWYU pragma: keep
class QDomElement;  // IWYU pragma: keep
class QHBoxLayout;
class QStackedLayout;
class QScrollArea;
 
namespace lmms
{
    class Mixer;
}
 
namespace lmms::gui
{
 
class LMMS_EXPORT MixerView
    : public QWidget
    , public ModelView
    , public SerializingObjectHook
{
    Q_OBJECT
public:
    MixerView(Mixer* mixer);
    void keyPressEvent(QKeyEvent* e) override;
 
    void saveSettings(QDomDocument& doc, QDomElement& domElement) override;
    void loadSettings(const QDomElement& domElement) override;
 
    inline MixerChannelView* currentMixerChannel()
    {
        return m_currentMixerChannel;
    }
 
    inline MixerChannelView* channelView(int index)
    {
        return m_mixerChannelViews[index];
    }
 
 
    void setCurrentMixerChannel(MixerChannelView* channel);
    void setCurrentMixerChannel(int channel);
 
    void clear();
 
 
    // display the send button and knob correctly
    void updateMixerChannel(int index);
 
    // notify the view that a mixer channel was deleted
    void deleteChannel(int index);
 
    // delete all unused channels
    void deleteUnusedChannels();
 
    // move the channel to the left or right
    void moveChannelLeft(int index);
    void moveChannelRight(int index);
 
    void renameChannel(int index);
 
    // make sure the display syncs up with the mixer.
    // useful for loading projects
    void refreshDisplay();
 
public slots:
    int addNewChannel();
 
private slots:
    void updateFaders();
    // TODO This should be improved. Currently the solo and mute models are connected via
    // the MixerChannelView's constructor with the MixerView. It would already be an improvement
    // if the MixerView connected itself to each new MixerChannel that it creates/handles.
    void toggledSolo();
    void toggledMute();
 
private:
    Mixer* getMixer() const;
    void updateAllMixerChannels();
    void connectToSoloAndMute(int channelIndex);
    void disconnectFromSoloAndMute(int channelIndex);
 
private:
    QVector<MixerChannelView*> m_mixerChannelViews;
 
    MixerChannelView* m_currentMixerChannel;
 
    QScrollArea* channelArea;
    QHBoxLayout* chLayout;
    QWidget* m_channelAreaWidget;
    QStackedLayout* m_racksLayout;
    QWidget* m_racksWidget;
    Mixer* m_mixer;
 
    void updateMaxChannelSelector();
 
    friend class MixerChannelView;
} ;
 
 
} // namespace lmms::gui
 
#endif // LMMS_GUI_MIXER_VIEW_H