wavetable_playhead.h

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/*
Summary:
 
WavetablePlayhead represents a movable playhead line indicating a current position within a set of frames. Users can interact with it using mouse events to set a specific frame. The class supports customizable tick marks at regular intervals and notifies listeners whenever the playhead is moved.
 */
#pragma once
 
#include "JuceHeader.h"
 
class WavetablePlayhead : public SynthSection {
public:
    static constexpr int kBigLineSkip = 16;
    static constexpr int kLineSkip = 4;
 
    class Listener {
    public:
        virtual ~Listener() { }
 
        virtual void playheadMoved(int new_position) = 0;
    };
 
    WavetablePlayhead(int num_positions);
 
    int position() { return position_; }
 
    void setPosition(int position);
 
    void setPositionQuad();
 
    void mouseDown(const MouseEvent& event) override;
 
    void mouseDrag(const MouseEvent& event) override;
 
    void mouseEvent(const MouseEvent& event);
 
    void paintBackground(Graphics& g) override;
 
    void resized() override;
 
    void addListener(Listener* listener) { listeners_.push_back(listener); }
 
    void setPadding(float padding) { padding_ = padding; setPositionQuad(); }
 
protected:
    OpenGlQuad position_quad_; 
 
    std::vector<Listener*> listeners_; 
 
    float padding_;       
    int num_positions_;   
    int position_;        
    int drag_start_x_;    
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(WavetablePlayhead)
};