gfx_surface.hpp

// Copyright Take Vos 2021-2022.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
 
#pragma once
 
#include "gfx_draw_context.hpp"
#include "gfx_surface_state.hpp"
#include "gfx_system_globals.hpp"
 
namespace hi::inline v1 {
class gfx_device;
class gfx_system;
class gfx_surface_delegate;
 
class gfx_surface {
public:
    gfx_system &system;
 
    gfx_surface_state state = gfx_surface_state::has_window;
    gfx_surface_loss loss = gfx_surface_loss::none;
 
    virtual ~gfx_surface() {}
 
    gfx_surface(const gfx_surface &) = delete;
    gfx_surface &operator=(const gfx_surface &) = delete;
    gfx_surface(gfx_surface &&) = delete;
    gfx_surface &operator=(gfx_surface &&) = delete;
 
    virtual void init() {}
 
    gfx_surface(gfx_system &system) : system(system) {}

    virtual void set_device(gfx_device *device) noexcept;
 
    [[nodiscard]] gfx_device *device() const noexcept
    {
        hi_axiom(gfx_system_mutex.recurse_lock_count());
        return _device;
    }

    [[nodiscard]] virtual extent2 size() const noexcept = 0;

    virtual void update(extent2 new_size) noexcept = 0;
 
 
    [[nodiscard]] virtual std::optional<gfx_draw_context> render_start(aarectangle redraw_rectangle) = 0;
    virtual void render_finish(gfx_draw_context const& context) = 0;

    virtual void add_delegate(gfx_surface_delegate *delegate) noexcept = 0;

    virtual void remove_delegate(gfx_surface_delegate *delegate) noexcept = 0;
 
protected:
    gfx_device *_device = nullptr;
 
    virtual void teardown() noexcept = 0;
};
 
} // namespace hi::inline v1