AutomationEditor.h

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/*
 * AutomationEditor.h - declaration of class AutomationEditor which is a window
 *                                        where you can edit dynamic values in an easy way
 *
 * Copyright (c) 2006-2008 Javier Serrano Polo <jasp00/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_AUTOMATION_EDITOR_H
#define LMMS_GUI_AUTOMATION_EDITOR_H
 
#include <QWidget>
#include <array>
 
#include "AutomationClip.h"
#include "ComboBoxModel.h"
#include "Editor.h"
#include "JournallingObject.h"
#include "MidiClip.h"
#include "SampleClip.h"
#include "TimePos.h"
#include "LmmsTypes.h"
#include "SampleThumbnail.h"
 
class QPushButton;
class QScrollBar;
 
namespace lmms
{
namespace gui
{
 
class ComboBox;
class Knob;
class TimeLineWidget;
 
 
 
class AutomationEditor : public QWidget, public JournallingObject
{
        Q_OBJECT
        Q_PROPERTY(QColor barLineColor MEMBER m_barLineColor)
        Q_PROPERTY(QColor beatLineColor MEMBER m_beatLineColor)
        Q_PROPERTY(QColor lineColor MEMBER m_lineColor)
        Q_PROPERTY(QColor nodeInValueColor MEMBER m_nodeInValueColor)
        Q_PROPERTY(QColor nodeOutValueColor MEMBER m_nodeOutValueColor)
        Q_PROPERTY(QColor nodeTangentLineColor MEMBER m_nodeTangentLineColor)
        Q_PROPERTY(QBrush scaleColor MEMBER m_scaleColor)
        Q_PROPERTY(QBrush graphColor MEMBER m_graphColor)
        Q_PROPERTY(QColor crossColor MEMBER m_crossColor)
        Q_PROPERTY(QColor backgroundShade MEMBER m_backgroundShade)
        Q_PROPERTY(QColor ghostNoteColor MEMBER m_ghostNoteColor)
        Q_PROPERTY(QColor detuningNoteColor MEMBER m_detuningNoteColor)
        Q_PROPERTY(QColor ghostSampleColor MEMBER m_ghostSampleColor)
        Q_PROPERTY(QColor outOfBoundsShade MEMBER m_outOfBoundsShade)
public:
        void setCurrentClip(AutomationClip * new_clip);
        void setGhostMidiClip(MidiClip* newMidiClip);
        void setGhostSample(SampleClip* newSample);
 
        inline const AutomationClip * currentClip() const
        {
                return m_clip;
        }
 
        inline bool validClip() const
        {
                return m_clip != nullptr;
        }
 
        void saveSettings(QDomDocument & doc, QDomElement & parent) override;
        void loadSettings(const QDomElement & parent) override;
        QString nodeName() const override
        {
                return "automationeditor";
        }
 
        enum class EditMode
        {
                Draw,
                Erase,
                DrawOutValues,
                EditTangents
        };
 
public slots:
        void update();
        void updateAfterClipChange();
 
 
protected:
        using timeMap = AutomationClip::timeMap;
 
        void keyPressEvent(QKeyEvent * ke) override;
        void leaveEvent(QEvent * e) override;
        void mousePressEvent(QMouseEvent * mouseEvent) override;
        void mouseDoubleClickEvent(QMouseEvent * mouseEvent) override;
        void mouseReleaseEvent(QMouseEvent * mouseEvent) override;
        void mouseMoveEvent(QMouseEvent * mouseEvent) override;
        void paintEvent(QPaintEvent * pe) override;
        void resizeEvent(QResizeEvent * re) override;
        void wheelEvent(QWheelEvent * we) override;
 
        float getLevel( int y );
        int xCoordOfTick( int tick );
        float yCoordOfLevel( float level );
        inline void drawLevelTick(QPainter & p, int tick, float value);
 
        timeMap::iterator getNodeAt(int x, int y, bool outValue = false, int r = 5);
        timeMap::iterator getClosestNode(int x);
 
        void drawLine( int x0, float y0, int x1, float y1 );
        bool fineTuneValue(timeMap::iterator node, bool editingOutValue);
 
protected slots:
        void play();
        void stop();
 
        void horScrolled( int new_pos );
        void verScrolled( int new_pos );
 
        void setEditMode(AutomationEditor::EditMode mode);
        void setEditMode(int mode);
 
        void setProgressionType(AutomationClip::ProgressionType type);
        void setProgressionType(int type);
        void setTension();
 
        void updatePosition();
 
        void zoomingXChanged();
        void zoomingYChanged();
 
        void updateYDelta();

        void setQuantization();
 
        void resetGhostNotes()
        {
                m_ghostNotes = nullptr;
                m_ghostSample = nullptr;
                update();
        }
 
private:
 
        enum class Action
        {
                None,
                MoveValue,
                EraseValues,
                MoveOutValue,
                ResetOutValues,
                DrawLine,
                MoveTangent,
                ResetTangents
        } ;
 
        // some constants...
        static const int SCROLLBAR_SIZE = 12;
        static const int TOP_MARGIN = 16;
 
        static const int DEFAULT_Y_DELTA = 6;
        static const int DEFAULT_STEPS_PER_BAR = 16;
        static const int DEFAULT_PPB = 12 * DEFAULT_STEPS_PER_BAR;
 
        static const int VALUES_WIDTH = 64;
 
        static const int NOTE_HEIGHT = 10; // height of individual notes
        static const int NOTE_MARGIN = 40; // total border margin for notes
        static const int MIN_NOTE_RANGE = 20; // min number of keys for fixed size
        static const int SAMPLE_MARGIN = 40;
        static constexpr int MAX_SAMPLE_HEIGHT = 400; // constexpr for use in min
 
        AutomationEditor();
        AutomationEditor( const AutomationEditor & );
        ~AutomationEditor() override;
 
        QPixmap m_toolDraw = embed::getIconPixmap("edit_draw");
        QPixmap m_toolErase = embed::getIconPixmap("edit_erase");
        QPixmap m_toolDrawOut = embed::getIconPixmap("edit_draw_outvalue");
        QPixmap m_toolEditTangents = embed::getIconPixmap("edit_tangent");
        QPixmap m_toolMove = embed::getIconPixmap("edit_move");
        QPixmap m_toolYFlip = embed::getIconPixmap("flip_y");
        QPixmap m_toolXFlip = embed::getIconPixmap("flip_x");
 
        ComboBoxModel m_zoomingXModel;
        ComboBoxModel m_zoomingYModel;
        ComboBoxModel m_quantizeModel;
 
        static const std::array<float, 7> m_zoomXLevels;
 
        FloatModel * m_tensionModel;
 
        AutomationClip * m_clip;
        float m_minLevel;
        float m_maxLevel;
        float m_step;
        float m_scrollLevel;
        float m_bottomLevel;
        float m_topLevel;
 
        // QPointers to set to nullptr on deletion
        QPointer<MidiClip> m_ghostNotes = nullptr; 
        QPointer<SampleClip> m_ghostSample = nullptr;
        bool m_renderSample = false;
 
        void centerTopBottomScroll();
        void updateTopBottomLevels();
 
        QScrollBar * m_leftRightScroll;
        QScrollBar * m_topBottomScroll;
 
        void adjustLeftRightScoll(int value);
 
        TimePos m_currentPosition;
 
        Action m_action;
 
        int m_moveXOffset;
 
        float m_drawLastLevel;
        tick_t m_drawLastTick;
 
        int m_ppb;
        float m_y_delta;
        bool m_y_auto;
 
        // Time position (key) of automation node whose outValue is being dragged
        int m_draggedOutValueKey;
 
        // The tick from the node whose tangent is being dragged
        int m_draggedTangentTick;
        // Whether the tangent being dragged is the InTangent or OutTangent
        bool m_draggedOutTangent;
 
        EditMode m_editMode;
 
        bool m_mouseDownLeft;
        bool m_mouseDownRight; //true if right click is being held down
 
        TimeLineWidget * m_timeLine;
        bool m_scrollBack;
 
        void drawCross(QPainter & p );
        void drawAutomationPoint( QPainter & p, timeMap::iterator it );
        void drawAutomationTangents(QPainter& p, timeMap::iterator it);
        bool inPatternEditor();
 
        QColor m_barLineColor;
        QColor m_beatLineColor;
        QColor m_lineColor;
        QBrush m_graphColor;
        QColor m_nodeInValueColor;
        QColor m_nodeOutValueColor;
        QColor m_nodeTangentLineColor;
        QBrush m_scaleColor;
        QColor m_crossColor;
        QColor m_backgroundShade;
        QColor m_ghostNoteColor;
        QColor m_detuningNoteColor;
        QColor m_ghostSampleColor;
        QColor m_outOfBoundsShade;
        
        SampleThumbnail m_sampleThumbnail;
 
        friend class AutomationEditorWindow;
 
 
signals:
        void currentClipChanged();
} ;
 
 
 
 
class AutomationEditorWindow : public Editor
{
        Q_OBJECT
 
        static const int INITIAL_WIDTH = 860;
        static const int INITIAL_HEIGHT = 480;
public:
        AutomationEditorWindow();
        ~AutomationEditorWindow() override = default;
 
        void setCurrentClip(AutomationClip* clip);
        void setGhostMidiClip(MidiClip* clip) { m_editor->setGhostMidiClip(clip); };
        void setGhostSample(SampleClip* newSample) { m_editor->setGhostSample(newSample); };
 
        const AutomationClip* currentClip();
 
        void dropEvent( QDropEvent * _de ) override;
        void dragEnterEvent( QDragEnterEvent * _dee ) override;
 
        void open(AutomationClip* clip);
 
        AutomationEditor* m_editor;
 
        QSize sizeHint() const override;
 
public slots:
        void clearCurrentClip();
 
signals:
        void currentClipChanged();
 
protected:
        void focusInEvent(QFocusEvent * event) override;
 
protected slots:
        void play() override;
        void stop() override;
 
private slots:
        void updateWindowTitle();
        void setProgressionType(int progType);
        void updateEditTanButton();
 
private:
        QAction* m_drawAction;
        QAction* m_eraseAction;
        QAction* m_drawOutAction;
        QAction* m_editTanAction;
 
        QAction* m_discreteAction;
        QAction* m_linearAction;
        QAction* m_cubicHermiteAction;
 
        QAction* m_flipYAction;
        QAction* m_flipXAction;
 
        Knob * m_tensionKnob;
 
        ComboBox * m_zoomingXComboBox;
        ComboBox * m_zoomingYComboBox;
        ComboBox * m_quantizeComboBox;
 
        QPushButton* m_resetGhostNotes;
};
 
} // namespace gui
 
} // namespace lmms
 
#endif // LMMS_GUI_AUTOMATION_EDITOR_H