imgui_sdl.hpp

// By Emil Ernerfeldt 2015-2016
// LICENSE:
//   This software is dual-licensed to the public domain and under the following
//   license: you are granted a perpetual, irrevocable license to copy, modify,
//   publish, and distribute this file as you see fit.

#pragma once

union SDL_Event;

namespace emilib {

class ImGui_SDL
{
public:
    ImGui_SDL(float width_points, float height_points, float pixels_per_point);
    ~ImGui_SDL(); 

    bool visible() const { return _visible; }
    void set_visible(bool v) { _visible = v; }

    bool interactive() const { return _interactive; }
    void set_interactive(bool v) { _interactive = v; }

    void new_frame();
    void paint();

    void on_event(const SDL_Event& e);

    bool mod_command() const;
    bool mod_shift() const;

    float width_points()     const { return _width_points;     }
    float height_points()    const { return _height_points;    }
    float width_pixels()     const { return _pixels_per_point * _width_points;  }
    float height_pixels()    const { return _pixels_per_point * _height_points; }
    float pixels_per_point() const { return _pixels_per_point; }

private:
    bool  _visible = true;
    bool  _interactive = true;
    float _width_points;
    float _height_points;
    float _pixels_per_point;
};

} // namespace emilib