sample_viewer.h

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#pragma once
 
#include "JuceHeader.h"
 
#include "audio_file_drop_source.h"
#include "common.h"
#include "open_gl_line_renderer.h"
#include "synth_types.h"
#include "sample_source.h"
#include "synth_module.h"
 
class SampleViewer : public OpenGlLineRenderer, public AudioFileDropSource {
public:
    static constexpr float kResolution = 256;
    static constexpr float kBoostDecay = 0.9f;
    static constexpr float kSpeedDecayMult = 5.0f;
 
    class Listener {
    public:
        virtual ~Listener() { }
 
        virtual void sampleLoaded(const File& file) = 0;
    };
 
    SampleViewer();
    virtual ~SampleViewer();
 
    void init(OpenGlWrapper& open_gl) override {
        OpenGlLineRenderer::init(open_gl);
        bottom_.init(open_gl);
        dragging_overlay_.init(open_gl);
    }
 
    void render(OpenGlWrapper& open_gl, bool animate) override;
 
    void destroy(OpenGlWrapper& open_gl) override {
        OpenGlLineRenderer::destroy(open_gl);
        bottom_.destroy(open_gl);
        dragging_overlay_.destroy(open_gl);
    }
 
    void resized() override;
 
    void setActive(bool active) { active_ = active; }
 
    bool isActive() const { return active_; }
 
    void audioFileLoaded(const File& file) override;
 
    void repaintAudio();
 
    void setLinePositions();
 
    void fileDragEnter(const StringArray& files, int x, int y) override {
        dragging_audio_file_ = true;
    }
 
    void fileDragExit(const StringArray& files) override {
        dragging_audio_file_ = false;
    }
 
    std::string getName();
 
    void addListener(Listener* listener) {
        listeners_.push_back(listener);
    }
 
    void setSample(vital::Sample* sample) { sample_ = sample; setLinePositions(); }
 
private:
    std::vector<Listener*> listeners_;      
 
    const vital::StatusOutput* sample_phase_output_;  
    vital::poly_float last_phase_;                    
    vital::poly_float last_voice_;                    
    vital::Sample* sample_;                           
 
    OpenGlLineRenderer bottom_;   
    OpenGlQuad dragging_overlay_; 
 
    bool dragging_audio_file_; 
    bool animate_;             
    bool active_;              
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(SampleViewer)
};