LayerPreview.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 LAYER_PREVIEW_H
#define LAYER_PREVIEW_H
 
#include <QtGui>
#include <QtWidgets>
#include <memory>
 
#include <core/Object.h>
#include <core/Preferences/Preferences.h>
#include <core/Basics/Instrument.h>
#include "../EventListener.h"
#include "../Widgets/WidgetWithScalableFont.h"
 
namespace H2Core
{
class InstrumentLayer;
}

class LayerPreview :  public QWidget, protected WidgetWithScalableFont<5, 6, 7>,  public H2Core::Object<LayerPreview>, public EventListener
{
    H2_OBJECT(LayerPreview)
        Q_OBJECT
 
        public:
                explicit LayerPreview(QWidget* pParent);
                ~LayerPreview();
 
                void updateAll();
 
                void paintEvent(QPaintEvent *ev) override;
                virtual void mousePressEvent(QMouseEvent *ev) override;
                virtual void mouseReleaseEvent(QMouseEvent *ev) override;
                virtual void mouseMoveEvent ( QMouseEvent *ev ) override;
 
                void set_selected_component( int SelectedComponent );
        void setSelectedLayer( int nSelectedLayer );
 
public slots:
                void onPreferencesChanged( H2Core::Preferences::Changes changes );
        
        private:
                static const int                m_nLayerHeight = 10;
                QPixmap                                 m_speakerPixmap;
                std::shared_ptr<H2Core::Instrument>     m_pInstrument;
                int                                             m_nSelectedLayer;
                int                                             m_nSelectedComponent;
                bool                                    m_bMouseGrab;
                bool                                    m_bGrabLeft;

                int getMidiVelocityFromRaw( const float raw );

                void showLayerStartVelocity( const std::shared_ptr<H2Core::InstrumentLayer> pLayer,
                                                                         QMouseEvent* pEvent );

                void showLayerEndVelocity( const std::shared_ptr<H2Core::InstrumentLayer> pLayer,
                                                                   QMouseEvent* pEvent );
 
                virtual void selectedInstrumentChangedEvent() override;
        virtual void drumkitLoadedEvent() override;
        virtual void updateSongEvent(int) override;
                int getPointSizeButton() const;
};
 
inline void LayerPreview::setSelectedLayer( int nLayer ) {
        if ( nLayer != m_nSelectedLayer ) {
                m_nSelectedLayer = nLayer;
        }
}
 
#endif