tetris/Text.cpp at master · luza/tetris · GitHub

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#include "Text.h"

//SDL_Surface *Text::m_font = SDL_LoadBMP("..\\resources\\font50.bmp");

Text::Text()
{
    init();
}

Text::Text(const char *text, int size, SDL_Color color)
{
    init();

    m_text = text;
    m_size = size;
    m_color = color;
}

Text::Text(
    const char *text,
    int size,
    Uint8 red,
    Uint8 green,
    Uint8 blue,
    Uint8 alpha
) {
    SDL_Color color = { red, green, blue, alpha };

    init();

    m_text = text;
    m_size = size;
    m_color = color;
}

Text::~Text()
{
    if (m_texture) {
        SDL_DestroyTexture(m_texture);
    }
}

void
Text::setSize(int size)
{
    m_size = size;
    reset();
}

void
Text::setColor(SDL_Color color)
{
    m_color = color;
    reset();
}

void
Text::setColor(Uint8 red, Uint8 green, Uint8 blue, Uint8 alpha)
{
    m_color.r = red;
    m_color.g = green;
    m_color.b = blue;
    m_color.a = alpha;
    reset();
}

void
Text::setText(const char *text)
{
    m_text = text;
    reset();
}

void
Text::init()
{
    m_texture = NULL;
}

void
Text::reset()
{
    // reset previous calculations
    if (m_texture) {
        SDL_DestroyTexture(m_texture);
        m_texture = NULL;
    }
}

SDL_Texture *
Text::getTexture(SDL_Renderer *renderer)
{
    if (m_texture != NULL) {
        return m_texture;
    }

    TTF_Font *font = TTF_OpenFont("resources/nk57-monospace-sc-rg.ttf", m_size);
    if (!font) {
        SDL_ShowSimpleMessageBox(0, "Error", "Unable to open resources/nk57-monospace-sc-rg.ttf", NULL);
        exit(1);
    }

    SDL_Surface *textSurface = TTF_RenderText_Blended(font, m_text.c_str(), m_color);
    TTF_CloseFont(font);

    m_texture = SDL_CreateTextureFromSurface(renderer, textSurface);
    SDL_FreeSurface(textSurface);

    return m_texture;
}