[SDL] SDL_ttf Font Rendering - SDL 텍스트 폰트 렌더링

아래 링크에서 SDL_ttf를 다운받아 설치하고 텍스트를 출력해 보자.

SDL_Libraries

 

SDL_ttf의 include, lib 디렉토리 파일들을 SDL 라이브러리에 적절히 복사한다.

 

sdl2_ttf.lib를 추가한다.

 

#include <iostream>
#include "SDL.h"
#include "SDL_ttf.h"
 
int main(int argc, char* argv[]) {
    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
        printf("SDL Initialization Fail: %s\n", SDL_GetError());
        return -1;
    }
 
    SDL_Window* window = SDL_CreateWindow("Hello World", SDL_WINDOWPOS_UNDEFINED,
        SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_RESIZABLE);
 
    if (!window) {
        printf("SDL_CreateWindow Error: %s\n", SDL_GetError());
        SDL_Quit();
        return -1;
    }
 
    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, 0);
 
    if (TTF_Init() < 0) {
        // Initialize SDL_ttf.
        printf("SDL TTF Initialization Failed: %s\n", TTF_GetError());
        return -1;
    }
 
    TTF_Font* font = TTF_OpenFont("C:\\Windows\\Fonts\\arial.ttf", 30);
    // Create a font from a file, using a specified point size.
    if (font == NULL) {
        printf("Could not open font! (%s)\n", TTF_GetError());
        return -1;
    }
    SDL_Color textColor = { 255, 0, 0 };
    SDL_Surface* textSurface = TTF_RenderText_Blended(font, "Hello World!", textColor);
    // Render Latin1 text at high quality to a new ARGB surface.
    SDL_Texture* textTexture = SDL_CreateTextureFromSurface(renderer, textSurface);
    // Create a texture from an existing surface.
    SDL_FreeSurface(textSurface);
    // Free an RGB surface.
    SDL_Rect destRect = { 10, 10, textSurface->w, textSurface->h };
    TTF_CloseFont(font);
    // Dispose of a previously-created font.
 
    SDL_Event event;
    bool quit = false;
 
    while (!quit) {
        while (SDL_PollEvent(&event)) {
            switch (event.type) {
            case SDL_QUIT:
                quit = true;
                break;
            case SDL_KEYDOWN:
                printf("Key pressed: %s\n", SDL_GetKeyName(event.key.keysym.sym));
                if (event.key.keysym.sym == SDLK_ESCAPE)
                    quit = true;
                break;
            default:
                break;
            }
        }
 
        SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);
        SDL_RenderClear(renderer);
        SDL_RenderCopy(renderer, textTexture, NULL, &destRect);
        // Copy a portion of the texture to the current rendering target.
        SDL_RenderPresent(renderer);
    }
 
    TTF_Quit();
    // Deinitialize SDL_ttf.
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();
 
    return 0;
}

 

소스를 입력하고 빌드한다.

 

실행하면 윈도우에 텍스트가 렌더링 된다.

※ 참고

SDL_ttf API