#ifndef XTC_SEQUENCER_WIDGET_HPP
#define XTC_SEQUENCER_WIDGET_HPP
#include <FL/Fl_Widget.H>
#include "xtc/xtc_project.h"
class SequencerWidget : public Fl_Widget {
public:
    using BeforeEdit = xtc_result (*)(void *);
    BeforeEdit before_edit = nullptr;
    uint64_t selected_track() const { return track_; }
    uint64_t selected_clip() const { return clip_; }
    using Seek = xtc_result (*)(void *, uint64_t);
    SequencerWidget(int x, int y, xtc_project *project, Seek seek, void *context);
    void set_project(xtc_project *project, bool reset = true);
    uint64_t position() const { return cursor_; }
    void position(uint64_t tick) { cursor_ = tick; redraw(); }
    xtc_result add_track();
    xtc_result add_region();
    xtc_result delete_selection();
    void zoom(int direction);
    xtc_project *project() const { return project_; }
    int handle(int event) override;
protected:
    void draw() override;
private:
    xtc_project *project_;
    Seek seek_;
    void *context_;
    uint64_t track_ = UINT64_MAX, clip_ = UINT64_MAX, cursor_ = 0;
    int scale_ = 48, drag_x_ = 0, mode_ = 0;
    xtc_clip_info original_{};
    uint64_t tick(int px) const;
    void changed(xtc_result result);
    void extent();
};
#endif