SongEditor.h

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/*
 * SongEditor.h - declaration of class SongEditor, a window where you can
 *                 setup your songs
 *
 * 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 LMMS_GUI_SONG_EDITOR_H
#define LMMS_GUI_SONG_EDITOR_H
 
#include "Editor.h"
#include "TrackContainerView.h"
 
class QLabel;
class QScrollBar;
 
namespace lmms
{
 
class IntModel;
class Song;
class ComboBoxModel;
 
namespace gui
{
 
 
class ActionGroup;
class AutomatableSlider;
class ComboBox;
class LcdSpinBox;
class MeterDialog;
class PositionLine;
class TextFloat;
class TimeLineWidget;
 
 
class SongEditor : public TrackContainerView
{
    Q_OBJECT
public:
    enum class EditMode
    {
        Draw,
        Knife,
        Select
    };
 
    SongEditor( Song * song );
    ~SongEditor() override;
 
    void saveSettings( QDomDocument& doc, QDomElement& element ) override;
    void loadSettings( const QDomElement& element ) override;
 
    ComboBoxModel* snappingModel() const;

    float getSnapSize() const;
 
    QString getSnapSizeString() const;
 
    TimeLineWidget* timeLine() const { return m_timeLine; }
    PositionLine* positionLine() const { return m_positionLine; }
 
public slots:
    void scrolled( int new_pos );
    void selectRegionFromPixels(int xStart, int xEnd);
    void stopSelectRegion();
    void updateRubberband();
 
    void setEditMode( lmms::gui::SongEditor::EditMode mode );
    void setEditModeDraw();
    void setEditModeKnife();
    void setEditModeSelect();
    void toggleProportionalSnap();
 
    void updatePosition();
    void updatePositionLine();
    void selectAllClips( bool select );
 
protected:
    void mousePressEvent(QMouseEvent * me) override;
    void mouseMoveEvent(QMouseEvent * me) override;
    void mouseReleaseEvent(QMouseEvent * me) override;
 
private slots:
    void setMasterVolume( int new_val );
    void showMasterVolumeFloat();
    void updateMasterVolumeFloat( int new_val );
    void hideMasterVolumeFloat();
 
    void setMasterPitch( int new_val );
    void showMasterPitchFloat();
    void updateMasterPitchFloat( int new_val );
    void hideMasterPitchFloat();
 
    void updateScrollBar(int len);
 
    void zoomingChanged();
 
private:
    void keyPressEvent( QKeyEvent * ke ) override;
    void wheelEvent( QWheelEvent * we ) override;
 
    bool allowRubberband() const override;
    bool knifeMode() const override;

    int calculatePixelsPerBar() const;

    int calculateZoomSliderValue(int pixelsPerBar) const;
 
    int trackIndexFromSelectionPoint(int yPos);
    int indexOfTrackView(const TrackView* tv);
 
    Song * m_song;
 
    QScrollBar * m_leftRightScroll;
 
    void adjustLeftRightScoll(int value);
 
    LcdSpinBox * m_tempoSpinBox;
 
    TimeLineWidget* m_timeLine;
    PositionLine* m_positionLine;
 
    MeterDialog * m_timeSigDisplay;
    AutomatableSlider * m_masterVolumeSlider;
    AutomatableSlider * m_masterPitchSlider;
 
    TextFloat * m_mvsStatus;
    TextFloat * m_mpsStatus;
 
 
    IntModel* m_zoomingModel;
    ComboBoxModel* m_snappingModel;
    bool m_proportionalSnap;
 
    bool m_scrollBack;
    bool m_smoothScroll;
 
    EditMode m_mode;
    EditMode m_ctrlMode; 
 
    QPoint m_origin;
    QPoint m_scrollPos;
    QPoint m_mousePos;
    int m_rubberBandStartTrackview;
    TimePos m_rubberbandStartTimePos;
    int m_rubberbandPixelsPerBar; 
    int m_trackHeadWidth;
    bool m_selectRegion;
 
    friend class SongEditorWindow;
 
signals:
    void pixelsPerBarChanged(float);
    void proportionalSnapChanged();
} ;
 
 
 
 
class SongEditorWindow : public Editor
{
    Q_OBJECT
public:
    SongEditorWindow( Song* song );
 
    QSize sizeHint() const override;
 
    SongEditor* m_editor;
    void syncEditMode();
 
protected:
    void resizeEvent( QResizeEvent * event ) override;
    void changeEvent( QEvent * ) override;
 
protected slots:
    void play() override;
    void record() override;
    void recordAccompany() override;
    void stop() override;
 
    void lostFocus();
    void adjustUiAfterProjectLoad();
 
    void updateSnapLabel();
 
signals:
    void playTriggered();
    void resized();
 
private:
    QAction* m_addPatternTrackAction;
    QAction* m_addSampleTrackAction;
    QAction* m_addAutomationTrackAction;
    QAction* m_setProportionalSnapAction;
 
    ActionGroup * m_editModeGroup;
    QAction* m_drawModeAction;
    QAction* m_knifeModeAction;
    QAction* m_selectModeAction;
    QAction* m_crtlAction;
 
    AutomatableSlider * m_zoomingSlider;
    ComboBox * m_snappingComboBox;
    QLabel* m_snapSizeLabel;
 
    QAction* m_insertBarAction;
    QAction* m_removeBarAction;
};
 
} // namespace gui
 
} // namespace lmms
 
#endif // LMMS_GUI_SONG_EDITOR_H