99 lines
3.1 KiB
C++
99 lines
3.1 KiB
C++
#ifndef BWIDGETS_RENDERER_HPP
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#define BWIDGETS_RENDERER_HPP
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#include <memory>
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#include <span>
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#include <SDL_render.h>
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#include <basic_widgets/core/error_helper.hpp>
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#include <basic_widgets/core/type/color.hpp>
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#include <basic_widgets/core/type/deleter.hpp>
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#include <basic_widgets/core/type/size.hpp>
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namespace bwidgets
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{
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class Texture;
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// Wrap some of SDL's 2D accelerated rendering API.
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class Renderer final
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{
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friend Texture;
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const std::unique_ptr<SDL_Renderer, Deleter> _data;
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static auto _info(SDL_Renderer* r) -> SDL_RendererInfo
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{
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SDL_RendererInfo info;
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success_or_throw<SDLError>(SDL_GetRendererInfo(r, &info));
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return info;
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}
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public:
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const SDL_RendererInfo info;
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explicit Renderer(SDL_Renderer*);
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Renderer(SDL_Window*, int, uint32_t);
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Renderer(const Renderer&) = delete;
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Renderer(Renderer&&) = delete;
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~Renderer() noexcept = default;
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auto operator=(const Renderer&) = delete;
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auto operator=(Renderer&&) = delete;
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[[nodiscard]] auto blend_mode() -> SDL_BlendMode;
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auto blend_mode(SDL_BlendMode) -> Renderer*;
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auto clear() -> Renderer*;
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auto copy(const Texture&, const SDL_Rect*, const SDL_Rect*) -> Renderer*;
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[[nodiscard]] auto draw_color() -> Color;
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auto draw_color(Color) -> Renderer*;
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auto draw_line(SDL_Point, SDL_Point) -> Renderer*;
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auto draw_lines(std::span<SDL_Point>) -> Renderer*;
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auto draw_point(SDL_Point) -> Renderer*;
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auto draw_points(std::span<SDL_Point>) -> Renderer*;
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auto draw_rect(const SDL_Rect*) -> Renderer*;
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auto draw_rects(std::span<SDL_Rect>) -> Renderer*;
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auto fill_rect(const SDL_Rect*) -> Renderer*;
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auto fill_rects(std::span<SDL_Rect>) -> Renderer*;
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[[nodiscard]] auto output_size() -> Size;
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void present() noexcept;
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[[nodiscard]] auto viewport() noexcept -> SDL_Rect;
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auto viewport(const SDL_Rect*) -> Renderer*;
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auto copy(const Texture& t, const SDL_Rect* src, const SDL_Rect& dst)
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{
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const auto d = dst;
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return copy(t, src, &d);
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}
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auto copy(const Texture& t, const SDL_Rect& src, const SDL_Rect* dst)
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{
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const auto s = src;
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return copy(t, &s, dst);
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}
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auto copy(const Texture& t, const SDL_Rect& src, const SDL_Rect& dst)
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{
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const auto s = src;
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const auto d = dst;
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return copy(t, &s, &d);
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}
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auto draw_rect(SDL_Rect&& r)
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{
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const auto rect = r;
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return draw_rect(&rect);
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}
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auto fill_rect(SDL_Rect&& r)
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{
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const auto rect = r;
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return fill_rect(&rect);
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}
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auto viewport(SDL_Rect&& vp)
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{
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const auto v = vp;
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return viewport(&v);
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}
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};
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}
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#endif
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