#pragma once
#include "event.h"

NS_START
class Canvas;
NS_END

class CanvasMode
{
public:
    static class NodeCanvas* node;
    static ui::Canvas* canvas;
    virtual void on_MouseDownL(MouseEvent* me, glm::vec2& loc) {}
    virtual void on_MouseUpL(MouseEvent* me, glm::vec2& loc) {}
    virtual void on_MouseDownR(MouseEvent* me, glm::vec2& loc) {}
    virtual void on_MouseUpR(MouseEvent* me, glm::vec2& loc) {}
    virtual void on_MouseMove(MouseEvent* me, glm::vec2& loc) {}
    virtual void on_MouseScroll(MouseEvent* me, glm::vec2& loc) {}
    virtual void on_MouseCancel(MouseEvent* me, glm::vec2& loc) {}
    virtual void on_KeyDown(KeyEvent* ke) {}
    virtual void on_KeyUp(KeyEvent* ke) {}
    virtual void on_GestureStart(GestureEvent* ge) {}
    virtual void on_GestureMove(GestureEvent* ge) {}
};

class CanvasModePen : public CanvasMode
{
    bool m_dragging = false;
    bool m_draggingR = false;
    glm::vec2 m_dragR_start;
    glm::vec2 m_pan_start;
    glm::vec2 m_pan;
    glm::vec2 m_cur;
    float m_camera_fov;
    float m_zoom_canvas = 1.f;
    float m_zoom_start;
public:
    virtual void on_MouseDownL(MouseEvent* me, glm::vec2& loc) override;
    virtual void on_MouseUpL(MouseEvent* me, glm::vec2& loc) override;
    virtual void on_MouseDownR(MouseEvent* me, glm::vec2& loc) override;
    virtual void on_MouseUpR(MouseEvent* me, glm::vec2& loc) override;
    virtual void on_MouseMove(MouseEvent* me, glm::vec2& loc) override;
    virtual void on_MouseScroll(MouseEvent* me, glm::vec2& loc) override;
    virtual void on_MouseCancel(MouseEvent* me, glm::vec2& loc) override;
    virtual void on_GestureStart(GestureEvent* ge) override;
    virtual void on_GestureMove(GestureEvent* ge) override;
};