AutomationPathView.h

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/*
 * Hydrogen
 * Copyright(c) 2002-2008 by Alex >Comix< Cominu [comix@users.sourceforge.net]
 * Copyright(c) 2008-2025 The hydrogen development team [hydrogen-devel@lists.sourceforge.net]
 *
 * http://www.hydrogen-music.org
 *
 * 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. If not, see https://www.gnu.org/licenses
 *
 */
 
#ifndef AUTOMATION_PATH_VIEW_H
#define AUTOMATION_PATH_VIEW_H
 
#include <core/Object.h>
#include <core/Preferences/Preferences.h>
#include <core/Basics/AutomationPath.h>
 
#include <QtGui>
#include <QtWidgets>

class AutomationPathView :  public QWidget,  public H2Core::Object<AutomationPathView>
{
        Q_OBJECT
        H2_OBJECT(AutomationPathView)
 
        void createBackground();
 
        H2Core::AutomationPath *_path;
        int m_nGridWidth;   
        int m_nMarginHeight;
        int m_nMaxPatternSequence;
 
        bool m_bIsHolding; 
        bool m_bPointAdded;
        float m_fOriginX;  
        float m_fOriginY;  
        H2Core::AutomationPath::iterator _selectedPoint; 
 
        float m_fTick;
        QPixmap* m_pBackgroundPixmap;
 
public:
        AutomationPathView(QWidget *parent = nullptr);
        ~AutomationPathView();
 
        H2Core::AutomationPath *getAutomationPath() const noexcept { return _path; }
        void setAutomationPath(H2Core::AutomationPath *path, bool bUpdate = true);
 
        int  getGridWidth() const noexcept { return m_nGridWidth; }
        void setGridWidth(int width);
 
        void updatePosition( float fTick );
        void updateAutomationPath();
 
                static constexpr int m_nMinimumHeight = 64;
 
protected:
        void paintEvent(QPaintEvent *event) override;
        void mousePressEvent(QMouseEvent *event) override;
        void mouseReleaseEvent(QMouseEvent *event) override;
        void mouseMoveEvent(QMouseEvent *event) override;
        void keyPressEvent(QKeyEvent *event) override;
 
 
        QPoint translatePoint(float x, float y) const;
        QPoint translatePoint(const std::pair<float,float> &p) const;
        bool checkBounds(QMouseEvent *event) const;
        std::pair<const float, float> locate(QMouseEvent *) const;
 
        void autoResize();
 
public slots:
        void onPreferencesChanged( H2Core::Preferences::Changes changes );
 
signals:
        void valueChanged();
 
        void pointAdded(float x, float y);
        void pointRemoved(float x, float y);
        void pointMoved(float ox, float oy, float tx, float ty);
};
 
#endif