texture_view.hpp

#ifndef LIBWTK_SDL2_TEXTURE_VIEW_HPP
#define LIBWTK_SDL2_TEXTURE_VIEW_HPP

#include <string>

#include <SDL2/SDL.h>

#include "widget.hpp"
#include "sdl_util.hpp"

struct texture_view : widget
{
    texture_view();
    
    texture_view(unique_texture_ptr p, int min_width = -1, int nat_width = -1);

    ~texture_view() override;

    void on_draw(draw_context & dc, selection_context const & sc) const override;
    void on_box_allocated() override;

    size_hint get_size_hint(int width, int height) const override;

    void set_texture(unique_texture_ptr p, int min_width = -1, int nat_width = -1);

    private:

    void refresh_target();
    vec fit_to_width(int width) const;
    int decode_min_width_param(int min_width) const;
    int decode_nat_width_param(int nat_width) const;

    unique_texture_ptr _p;
    vec _size;
    int _min_width;
    int _nat_width;
    SDL_Rect _target;
};

#endif