TimelineScrollArea.hpp

#pragma once
#include <QScrollArea>
 
#include <Core/CoreMacros.hpp>
 
namespace Ra::Gui {
 
class TimelineScrollArea : public QScrollArea
{
    Q_OBJECT
  public:
    explicit TimelineScrollArea( QWidget* parent = nullptr );
 
    Scalar getMaxDuration();
 
    void setMaxDuration( Scalar duration );
 
    Scalar getStep();
 
    int getNbInterval();
 
    Scalar getPixPerSec();
 
    int getZero();
 
  signals:
    void stepChanged( Scalar step );
 
    void addKeyFrame();
 
    void removeKeyFrame();
 
    void previousKeyFrame();
 
    void nextKeyFrame();
 
    void durationIncrement();
 
    void durationDecrement();
 
    void togglePlayPause();
 
    void undo();
 
    void redo();
 
  public slots:
    void onDrawRuler( int width );
 
  protected:
    void keyPressEvent( QKeyEvent* event ) override;
 
    void wheelEvent( QWheelEvent* event ) override;
 
    void mousePressEvent( QMouseEvent* event ) override;
    void mouseReleaseEvent( QMouseEvent* event ) override;
    void mouseMoveEvent( QMouseEvent* event ) override;
 
  private:
    int m_mousePosX { 0 }; 
    int m_sliderPos { 0 }; 
 
    Scalar m_maxDuration { 20_ra }; 
    int m_nbInterval { 0 };         
    Scalar m_step { 1 };            
    Scalar m_pixPerSec { 10 };      
    int m_zero { 20 };              
 
    static constexpr int s_nbSteps = 13;
 
    static constexpr Scalar s_steps[s_nbSteps] = { 0.01_ra,
                                                   0.02_ra,
                                                   0.05_ra,
                                                   0.1_ra,
                                                   0.2_ra,
                                                   0.5_ra,
                                                   1.0_ra,
                                                   2.0_ra,
                                                   5.0_ra,
                                                   10.0_ra,
                                                   20.0_ra,
                                                   50.0_ra,
                                                   100.0_ra };
};
 
} // namespace Ra::Gui