breakout/font.c

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <math.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>
#include <SDL2/SDL_ttf.h>

#include "font.h"

#define FONT_FontFile1 "assets/fonts/monofur.ttf"
#define FONT_FontFile2 "assets/fonts/ka1.ttf"
#define FONT_FontFile3 "assets/fonts/minecraft.ttf"
#define FONT_FontFile4 "assets/fonts/ae-bi.ttf"

extern int width, height;

int FONT_FontCount;
SDL_Color FONT_FontColor;
TTF_Font ** FONT_FontFamily;
bool FONT_IsInit = false;

void FONT_Initialize(){
    if (!FONT_IsInit) {
        printf("Initializing Font...\n");
        FONT_FontColor = (SDL_Color) {255, 255, 255 };
        FONT_FontCount = 4;
        FONT_FontFamily = (TTF_Font **)malloc(FONT_FontCount * sizeof(TTF_Font *));
        FONT_FontFamily[0] = TTF_OpenFont(FONT_FontFile1, 48);
        if (!FONT_FontFamily) printf("Font 1 could not initialize! Error: %s\n", TTF_GetError());
        else printf("Font 1 was successfully initialized!\n");
        FONT_PrintFontStyle(FONT_FontFamily[0]);
        FONT_FontFamily[1] = TTF_OpenFont(FONT_FontFile2, 48);
        if (!FONT_FontFamily) printf("Font 2 could not initialize! Error: %s\n", TTF_GetError());
        else printf("Font 2 was successfully initialized!\n");
        FONT_PrintFontStyle(FONT_FontFamily[1]);
        FONT_FontFamily[2] = TTF_OpenFont(FONT_FontFile3, 48);
        if (!FONT_FontFamily) printf("Font 3 could not initialize! Error: %s\n", TTF_GetError());
        else printf("Font 3 was successfully initialized!\n");
        FONT_PrintFontStyle(FONT_FontFamily[2]);
        FONT_FontFamily[3] = TTF_OpenFont(FONT_FontFile4, 48);
        if (!FONT_FontFamily) printf("Font 4 could not initialize! Error: %s\n", TTF_GetError());
        else printf("Font 4 was successfully initialized!\n");
        FONT_PrintFontStyle(FONT_FontFamily[3]);
        printf("Font initialized!\n");
        FONT_IsInit = true;
    } else printf("Font already initialized!\n");
} /* FONT_Initialize */

void FONT_PrintFontStyle(TTF_Font * ffont){
    int style;

    style = TTF_GetFontStyle(ffont);
    printf("The font style is:");
    if (style == TTF_STYLE_NORMAL)
        printf(" normal");
    else {
        if (style & TTF_STYLE_BOLD)
            printf(" bold");
        if (style & TTF_STYLE_ITALIC)
            printf(" italic");
        if (style & TTF_STYLE_UNDERLINE)
            printf(" underline");
        if (style & TTF_STYLE_STRIKETHROUGH)
            printf(" strikethrough");
    }
    printf("\n");
}

void FONT_Deinitialize(){
    if (FONT_IsInit) {
        printf("De-initializing Font...\n");
        for (int i = 0; i < FONT_FontCount; i++) {
            TTF_CloseFont(FONT_FontFamily[i]);
        }
        free(FONT_FontFamily);
        printf("Font de-initialized!\n");
        FONT_IsInit = false;
    } else printf("Font already de-initialized!\n");
}

void FONT_RenderText(SDL_Renderer * renderer, char * text, SDL_Rect * dstRect, int index){
    SDL_Rect srcRect;

    srcRect.x = 0;
    srcRect.y = 0;
    SDL_Texture * texture = FONT_GenerateTexture(renderer, text, &srcRect, index);
    SDL_RenderCopy(renderer, texture, &srcRect, dstRect);
    SDL_DestroyTexture(texture);
}

void FONT_RenderTextCentered(SDL_Renderer * renderer, char * text, float scale, int index){
    SDL_Rect srcRect, dstRect;

    srcRect.x = 0;
    srcRect.y = 0;

    SDL_Texture * texture = FONT_GenerateTexture(renderer, text, &srcRect, index);
    dstRect.w = (int)roundf((float)(srcRect.w) * scale);
    dstRect.h = (int)roundf((float)(srcRect.h) * scale);
    dstRect.x = (width - dstRect.w) / 2;
    dstRect.y = (height - dstRect.h) / 2;
    SDL_RenderCopy(renderer, texture, &srcRect, &dstRect);
    SDL_DestroyTexture(texture);
}

SDL_Texture * FONT_GenerateTexture(SDL_Renderer * renderer, char * text, SDL_Rect * Message_rect, int index){
    SDL_Surface * tmpSurface = FONT_GenerateSurface(text, Message_rect, index);
    SDL_Texture * resultTexture = SDL_CreateTextureFromSurface(renderer, tmpSurface);

    SDL_FreeSurface(tmpSurface);
    return resultTexture;
} /* FONT_GenerateSurface */

SDL_Surface * FONT_GenerateSurface(char * text, SDL_Rect * Message_rect, int index){
    TTF_SizeText(FONT_FontFamily[index], text, &(Message_rect->w), &(Message_rect->h));
    return TTF_RenderText_Solid(FONT_FontFamily[index], text, FONT_FontColor);
}