ImSequencer.h

#pragma once

#include <cstddef>

struct ImDrawList;
struct ImRect;
namespace ImSequencer
{
    enum SEQUENCER_OPTIONS
    {
        SEQUENCER_EDIT_NONE = 0,
        SEQUENCER_EDIT_STARTEND = 1 << 1,
        SEQUENCER_CHANGE_FRAME = 1 << 3,
        SEQUENCER_ADD = 1 << 4,
        SEQUENCER_DEL = 1 << 5,
        SEQUENCER_COPYPASTE = 1 << 6,
        SEQUENCER_EDIT_ALL = SEQUENCER_EDIT_STARTEND | SEQUENCER_CHANGE_FRAME
    };

    struct SequenceInterface
    {
        bool focused = false;
        virtual int GetFrameMin() const = 0;
        virtual int GetFrameMax() const = 0;
        virtual int GetItemCount() const = 0;

        virtual void BeginEdit(int /*index*/) {}
        virtual void EndEdit() {}
        virtual int GetItemTypeCount() const { return 0; }
        virtual const char *GetItemTypeName(int /*typeIndex*/) const { return ""; }
        virtual const char *GetItemLabel(int /*index*/) const { return ""; }

        virtual void Get(int index, int** start, int** end, int *type, unsigned int *color) = 0;
        virtual void Add(int /*type*/) {}
        virtual void Del(int /*index*/) {}
        virtual void Duplicate(int /*index*/) {}

        virtual void Copy() {}
        virtual void Paste() {}

        virtual size_t GetCustomHeight(int /*index*/) { return 0; }
        virtual void DoubleClick(int /*index*/) {}
        virtual void CustomDraw(int /*index*/, ImDrawList* /*draw_list*/, const ImRect& /*rc*/, const ImRect& /*legendRect*/, const ImRect& /*clippingRect*/, const ImRect& /*legendClippingRect*/) {}
        virtual void CustomDrawCompact(int /*index*/, ImDrawList* /*draw_list*/, const ImRect& /*rc*/, const ImRect& /*clippingRect*/) {}
    };


    // return true if selection is made
    bool Sequencer(SequenceInterface *sequence, int *currentFrame, bool *expanded, int *selectedEntry, int *firstFrame, int sequenceOptions);

}