116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
#include "Display.hpp"
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#include "Game.hpp"
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Display::Display(Node* parent) : Node(parent)
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{
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get_delegate().subscribe(&Display::respond, this);
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}
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glm::ivec2 Display::get_window_size()
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{
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glm::ivec2 size;
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SDL_GetWindowSize(get_root()->get_window(), &size.x, &size.y);
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return size;
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}
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Box Display::get_window_box()
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{
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return Box(glm::vec2(0, 0), get_window_size());
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}
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void Display::get_screen_pixels(unsigned char* pixels, int w, int h, int x, int y)
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{
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if (get_root()->is_gl_context)
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{
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GLenum format;
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#if SDL_BYTEORDER == SDL_BIG_ENDIAN
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format = GL_BGRA;
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#else
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format = GL_RGBA;
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#endif
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glReadBuffer(GL_FRONT);
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glReadPixels(x, y, w, h, format, GL_UNSIGNED_BYTE, pixels);
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// SDL_Log("(%i, %i, %i) (%i, %i, %i, %i)",
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// glCheckFramebufferStatus(GL_FRAMEBUFFER),
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// glCheckFramebufferStatus(GL_READ_FRAMEBUFFER),
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// glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER),
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// pixels[0], pixels[1], pixels[2], pixels[3]);
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}
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else
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{
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Uint32 format;
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#if SDL_BYTEORDER == SDL_BIG_ENDIAN
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format = SDL_PIXELFORMAT_ARGB8888;
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#else
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format = SDL_PIXELFORMAT_ABGR8888;
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#endif
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SDL_RenderReadPixels(
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get_root()->renderer, NULL, format, pixels, bpp / 8 * w);
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}
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}
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SDL_Surface* Display::get_screen_surface()
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{
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glm::ivec2 size = get_window_size();
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unsigned char* pixels = new unsigned char[bpp / 8 * size.x * size.y];
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get_screen_pixels(pixels, size.x, size.y);
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SDL_Surface* surface = get_screen_surface_from_pixels(
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pixels, get_root()->is_gl_context);
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delete[] pixels;
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return surface;
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}
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SDL_Surface* Display::get_screen_surface_from_pixels(
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unsigned char* pixels, bool flip)
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{
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glm::ivec2 size = get_window_size();
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SDL_Surface* surface;
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Uint32 rmask, gmask, bmask, amask;
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#if SDL_BYTEORDER == SDL_BIG_ENDIAN
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rmask = 0xff000000;
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gmask = 0x00ff0000;
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bmask = 0x0000ff00;
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amask = 0x000000ff;
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#else
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rmask = 0x000000ff;
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gmask = 0x0000ff00;
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bmask = 0x00ff0000;
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amask = 0xff000000;
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#endif
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if (flip)
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{
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SDL_Surface* pixel_surface = SDL_CreateRGBSurfaceFrom(
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pixels, size.x, size.y, bpp, bpp / 8 * size.x, rmask, gmask, bmask, amask);
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surface = zoomSurface(pixel_surface, 1, -1, SMOOTHING_OFF);
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SDL_FreeSurface(pixel_surface);
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}
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else
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{
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surface = SDL_CreateRGBSurface(0, size.x, size.y, bpp, rmask, gmask, bmask, amask);
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std::memcpy(surface->pixels, pixels, bpp / 8 * size.x * size.y);
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}
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return surface;
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}
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void Display::respond(SDL_Event& event)
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{
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if (get_delegate().compare(event, "fullscreen"))
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{
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toggle_fullscreen();
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}
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}
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void Display::toggle_fullscreen()
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{
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if (SDL_GetWindowFlags(get_root()->get_window()) & SDL_WINDOW_FULLSCREEN)
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{
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SDL_Log("fullscreen requested");
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SDL_SetWindowFullscreen(get_root()->window, 0);
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}
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else
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{
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SDL_Log("exit fullscreen requested");
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SDL_SetWindowFullscreen(get_root()->get_window(), SDL_WINDOW_FULLSCREEN);
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}
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}
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