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#pragma once
#include "util.hpp"
#include <string>
#include <array>
#include <map>
#include <type_traits>
extern "C" {
#include <SDL2/SDL_video.h>
#include <SDL2/SDL_render.h>
}
namespace wsdl2 {
// forward declarations
class texture;
class renderer;
class window;
// name aliases
using rect = SDL_Rect;
using point = SDL_Point;
struct color {
std::uint8_t r, g, b, a;
};
enum class blend_mode {
// TODO: map blend modes
unimplemented
};
/// a graphic object allocated in the VRAM,
/// the CPU has not much control of this buffer
class texture {
public:
enum class pixformat : Uint32 {
unknown = SDL_PIXELFORMAT_UNKNOWN,
index1lsb = SDL_PIXELFORMAT_INDEX1LSB,
index1msb = SDL_PIXELFORMAT_INDEX1MSB,
index4lsb = SDL_PIXELFORMAT_INDEX4LSB,
index4msb = SDL_PIXELFORMAT_INDEX4MSB,
index8 = SDL_PIXELFORMAT_INDEX8,
rgb332 = SDL_PIXELFORMAT_RGB332,
rgb444 = SDL_PIXELFORMAT_RGB444,
rgb555 = SDL_PIXELFORMAT_RGB555,
bgr555 = SDL_PIXELFORMAT_BGR555,
argb4444 = SDL_PIXELFORMAT_ARGB4444,
rgba4444 = SDL_PIXELFORMAT_RGBA4444,
abgr4444 = SDL_PIXELFORMAT_ABGR4444,
bgra4444 = SDL_PIXELFORMAT_BGRA4444,
argb1555 = SDL_PIXELFORMAT_ARGB1555,
rgba5551 = SDL_PIXELFORMAT_RGBA5551,
abgr1555 = SDL_PIXELFORMAT_ABGR1555,
bgra5551 = SDL_PIXELFORMAT_BGRA5551,
rgb565 = SDL_PIXELFORMAT_RGB565,
bgr565 = SDL_PIXELFORMAT_BGR565,
rgb24 = SDL_PIXELFORMAT_RGB24,
bgr24 = SDL_PIXELFORMAT_BGR24,
rgb888 = SDL_PIXELFORMAT_RGB888,
rgbx8888 = SDL_PIXELFORMAT_RGBX8888,
bgr888 = SDL_PIXELFORMAT_BGR888,
bgrx8888 = SDL_PIXELFORMAT_BGRX8888,
argb8888 = SDL_PIXELFORMAT_ARGB8888,
rgba8888 = SDL_PIXELFORMAT_RGBA8888,
abgr8888 = SDL_PIXELFORMAT_ABGR8888,
bgra8888 = SDL_PIXELFORMAT_BGRA8888,
argb2101010 = SDL_PIXELFORMAT_ARGB2101010,
};
enum class access : int {
static_ = SDL_TEXTUREACCESS_STATIC,
streaming = SDL_TEXTUREACCESS_STREAMING,
target = SDL_TEXTUREACCESS_TARGET
};
const pixformat _format;
const access _access;
texture() = delete;
// TODO: create a texture copy constructor?
texture(const texture& other) = delete;
// TODO: create surface wrapper class
// texture(const surface& surf);
texture(renderer& r, pixformat p, access a, std::size_t width, std::size_t height);
virtual ~texture();
/// lock a portion to be write-only
// TODO: needs surface wrapper class
// bool lock(const rect& region, const surface&);
inline void unlock() { SDL_UnlockTexture(m_texture); }
inline bool alpha(std::uint8_t val) {
int supported = SDL_SetTextureAlphaMod(m_texture, val);
if (supported == -1)
return false;
else if (supported == 0)
return true;
util::check(supported);
return false;
}
inline std::uint8_t alpha() {
std::uint8_t val;
util::check(0 == SDL_GetTextureAlphaMod(m_texture, &val));
return val;
}
private:
renderer& m_renderer;
SDL_Texture *m_texture;
// dirty C code
SDL_Texture* sdl();
};
/// the guy who does the actual hard stuff
class renderer {
public:
friend class window;
friend class texture;
renderer(window& w);
renderer(texture& t);
virtual ~renderer();
inline void set_target() {}
inline void clear() { SDL_RenderClear(sdl()); }
inline void present() { SDL_RenderPresent(sdl()); }
// set color
inline void set_color(std::uint8_t r, std::uint8_t g, std::uint8_t b, std::uint8_t a) {
util::check(0 == SDL_SetRenderDrawColor(sdl(), r, g, b, a));
}
inline void set_color(const color& c) {
set_color(c.r, c.g, c.b, c.a);
}
inline color get_color() {
color c;
util::check(0 == SDL_GetRenderDrawColor(sdl(), &c.r, &c.g, &c.b, &c.a));
return c;
}
// draw a single element
inline void draw_point(int x, int y) {
util::check(0 == SDL_RenderDrawPoint(sdl(), x, y));
}
inline void draw_point(const point& p) {
draw_point(p.x, p.y);
}
inline void draw_line(int x1, int y1, int x2, int y2) {
util::check(0 == SDL_RenderDrawLine(sdl(), x1, y1, x2, y2));
};
inline void draw_line(const point& a, const point& b) {
draw_line(a.x, a.y, b.x, b.y);
};
inline void draw_rect(int x, int y, int h, int w) {
draw_rect(rect {x, y, h, w});
}
inline void draw_rect(const rect& rect) {
util::check(0 == SDL_RenderDrawRect(sdl(), &rect));
}
inline void fill_rect(const rect& rect) {
util::check(0 == SDL_RenderFillRect(sdl(), &rect));
}
// draw multiple elements
template<template<typename> typename Container>
inline void draw_lines(const Container<point>& points) {
util::check(0 == SDL_RenderDrawLines(sdl(), points.data(), points.size()));
}
template<template<typename> typename Container>
inline void draw_points(const Container<point>& points) {
util::check(0 == SDL_RenderDrawLines(sdl(), points.data(), points.size()));
}
template<template<typename> typename Container>
inline void draw_rects(const Container<rect>& rects) {
util::check(0 == SDL_RenderDrawLines(sdl(), rects.data(), rects.size()));
}
template<template<typename> typename Container>
inline void fill_rects(const Container<rect>& rects) {
util::check(0 == SDL_RenderFillRects(sdl(), rects.data(), rects.size()));
}
// overloaded drawing function
inline void draw(const point& p) { draw_point(p); }
inline void draw(const rect& r) { draw_rect(r); }
inline void fill(const rect& r) { fill_rect(r); }
template<template<typename> typename Container>
inline void draw(const Container<point>& points) {
draw_points(points);
}
template<template<typename> typename Container>
inline void draw(const Container<rect>& rects) {
draw_rects(rects);
}
template<template<typename> typename Container>
inline void fill(const Container<rect>& rects) {
fill_rects(rects);
}
private:
SDL_Renderer *m_renderer;
renderer();
void create_sdl_renderer(SDL_Window *win);
// dirty C code
SDL_Renderer* sdl();
};
/// a basic wrapper around a SDL window
class window {
static std::map<Uint8, window*> win_map;
public:
friend class renderer;
window() = delete;
window(const window& other) = delete;
window(const std::string& title, std::size_t width, std::size_t height);
virtual ~window();
// setters
void open();
void close();
inline void show() { SDL_ShowWindow(sdl()); }
inline void hide() { SDL_HideWindow(sdl()); }
inline void raise() { SDL_RaiseWindow(sdl()); }
// getters
bool is_open();
bool is_visible();
// rendering
renderer& get_renderer() { return m_renderer; }
void update();
static window * get(Uint8 id);
private:
bool m_open;
renderer m_renderer;
SDL_Window *m_window;
// dirty C code
SDL_Window* sdl();
};
}
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