game/sdlpp/sdlpp_textrenderer.cpp

#include "sdlpp_textrenderer.hpp"

namespace SDLPP {
TextRenderer::TextRenderer( double x, double y, double w, double h,
                            std::shared_ptr< Renderer > &r )
        : RectangleRender( x, y, w, h, r ) {}
TextRenderer::TextRenderer( double x, double y, double w, double h,
                            std::shared_ptr< Renderer > &r,
                            std::shared_ptr< Font > font,
                            const std::string &text, const std::string &color,
                            const std::string &outline_color,
                            double outline_size, int flags )
        : RectangleRender( x, y, w, h, r ) {
    position_flags = flags;
    setText( font, text, color, outline_color, outline_size );
    saveFontConfig( font, color, outline_color, outline_size );
}
void TextRenderer::setText( std::shared_ptr< Font > font,
                            const std::string &text, const std::string &color,
                            const std::string &outline_color,
                            double outline_size ) {
    _text = text;
    setTextColor( font, color, outline_color, outline_size );
}
void TextRenderer::setTextColor( std::shared_ptr< Font > font,
                                 const std::string &color,
                                 const std::string &outline_color,
                                 double outline_size ) {
    saveFontConfig( font, color, outline_color, outline_size );
    updateSizeAndPosition();
    updateDstRect();
}
void TextRenderer::changeText( const std::string &text ) {
    _text = text;
    updateSizeAndPosition();
}
void TextRenderer::setFlags( int flags ) {
    position_flags = flags;
    updateDstRect();
}
void TextRenderer::render() {
    if ( !getHidden() ) {
        if ( polygon )
            polygon->render( *renderer );
        if ( texture != NULL )
            SDL_RenderCopy( renderer->getRendererPtr(),
                            texture->getTexturePtr(), NULL, &dst_rect );
    }
    if ( hasCollisions() && renderer->getRenderColiders() && !getHidden() ) {
        for ( const auto &col : getCollisions() )
            col->render( *renderer, colider_color );
    }
}
void TextRenderer::updateSizeAndPosition() {
    RectangleRender::updateSizeAndPosition();

    int fontSize = 0.6 * getRect().h;
    last_font->changeFontSize( fontSize );
    int intOutline = last_outline_size;
    if ( intOutline != -1 ) {
        intOutline = last_outline_size * fontSize;
    }
    setTexture( *last_font, _text, last_color, last_outline_color, intOutline );
    last_font->revertSize();

    updateDstRect();
}
std::shared_ptr< RenderObject > TextRenderer::copySelf() {
    auto ret = std::make_shared< TextRenderer >( *this );
    copyTo( ret );
    return ret;
}

void TextRenderer::copyTo( std::shared_ptr< RenderObject > other ) {
    RectangleRender::copyTo( other );
}

void TextRenderer::updateDstRect() {
    if ( !texture )
        return;
    int text_width{}, text_height{};
    SDL_QueryTexture( texture->getTexturePtr(), NULL, NULL, &text_width,
                      &text_height );
    if ( text_width < rect.w && text_height < rect.h ) {
        dst_rect.w = text_width;
        dst_rect.h = text_height;
    } else {
        double x_div = static_cast< double >( text_width ) /
                       static_cast< double >( rect.w );
        double y_div = static_cast< double >( text_height ) /
                       static_cast< double >( rect.h );
        if ( x_div > y_div ) {
            dst_rect.w = text_width / x_div;
            dst_rect.h = text_height / x_div;
        } else {
            dst_rect.w = text_width / y_div;
            dst_rect.h = text_height / y_div;
        }
    }
    if ( !( position_flags & SDLPP_TEXT_LEFT ||
            position_flags & SDLPP_TEXT_RIGHT ) ) {
        dst_rect.x = rect.x + ( rect.w - dst_rect.w ) / 2;
    } else if ( position_flags & SDLPP_TEXT_LEFT ) {
        dst_rect.x = rect.x;
    } else if ( position_flags & SDLPP_TEXT_RIGHT ) {
        dst_rect.x = rect.x + rect.w - dst_rect.w;
    }
    if ( !( position_flags & SDLPP_TEXT_TOP ||
            position_flags & SDLPP_TEXT_BOTTOM ) ) {
        dst_rect.y = rect.y + ( rect.h - dst_rect.h ) / 2;
    } else if ( position_flags & SDLPP_TEXT_TOP ) {
        dst_rect.y = rect.y;
    } else if ( position_flags & SDLPP_TEXT_BOTTOM ) {
        dst_rect.y = rect.y + rect.h - dst_rect.h;
    }
}
void TextRenderer::saveFontConfig( std::shared_ptr< Font > font,
                                   const std::string &color,
                                   const std::string &outline_color,
                                   double outline_size ) {
    last_font = font;
    last_color = color;
    last_outline_color = outline_color;
    last_outline_size = outline_size;
}
} // namespace SDLPP