cairo.c

#include <SDL2/SDL.h>
#include <stdio.h>

int main(int argc, char* argv[]) {
    SDL_Init(SDL_INIT_VIDEO);

    SDL_Window* window = SDL_CreateWindow(
        "SDL2 Floating Glyph",
        SDL_WINDOWPOS_CENTERED,
        SDL_WINDOWPOS_CENTERED,
        400, 200,
        SDL_WINDOW_BORDERLESS | SDL_WINDOW_ALWAYS_ON_TOP
    );

    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_TARGETTEXTURE);
    SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);

    // Main loop flag
    int running = 1;
    SDL_Event event;

    while (running) {
        while (SDL_PollEvent(&event) != 0) {
            if (event.type == SDL_QUIT) {
                running = 0;
            }
        }

        // Clear the screen with transparent black
        SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
        SDL_RenderClear(renderer);

        // Draw semi-transparent text using SDL_ttf or SDL's rendering
        SDL_SetRenderDrawColor(renderer, 0, 255, 0, 200); // Green with 80% opacity
        SDL_Rect rect = {50, 50, 300, 100};
        SDL_RenderFillRect(renderer, &rect);

        SDL_RenderPresent(renderer);
    }

    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();

    return 0;
}