/*      _______   __   __   __   ______   __   __   _______   __   __
 *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
 *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
 *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
 *
 *
 * Per Larsson a.k.a finalman
 * Olof Naessén a.k.a jansem/yakslem
 *
 * Visit: http://guichan.sourceforge.net
 *
 * License: (BSD)
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of Guichan nor the names of its contributors may
 *    be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * For comments regarding functions please see the header file.
 */

# include "guisan/sdl/sdltruetypefont.hpp"

# include "guisan/exception.hpp"
# include "guisan/graphics.hpp"
# include "guisan/image.hpp"
# include "guisan/sdl/sdl2graphics.hpp"
# include "guisan/sdl/sdlgraphics.hpp"

namespace gcn
{
    SDLTrueTypeFont::SDLTrueTypeFont(const std::string& filename, int size) :
        mFilename(filename),
        mFont(TTF_OpenFont(filename.c_str(), size))
    {
        if (mFont == nullptr)
        {
            throw GCN_EXCEPTION("SDLTrueTypeFont::SDLTrueTypeFont. " + std::string(TTF_GetError()));
        }
    }

    SDLTrueTypeFont::~SDLTrueTypeFont()
    {
        TTF_CloseFont(mFont);
    }

    int SDLTrueTypeFont::getWidth(const std::string& text) const
    {
        int w, h;
        TTF_SizeText(mFont, text.c_str(), &w, &h);

        return w;
    }

    int SDLTrueTypeFont::getHeight() const
    {
        return TTF_FontHeight(mFont) + mRowSpacing;
    }

    void SDLTrueTypeFont::drawString(
        Graphics* graphics, const std::string& text, const int x, const int y, bool enabled)
    {
        if (text.empty())
        {
            return;
        }

        auto sdlGraphics = dynamic_cast<SDLGraphics*>(graphics);
        auto sdl2Graphics = dynamic_cast<SDL2Graphics*>(graphics);

        if (sdlGraphics == nullptr && sdl2Graphics == nullptr)
        {
            throw GCN_EXCEPTION(
                "SDLTrueTypeFont::drawString. Graphics object not an SDL graphics object!");
        }

        // This is needed for drawing the Glyph in the middle if we have spacing
        const int yoffset = getRowSpacing() / 2;

        SDL_Color sdlCol;
        if (enabled)
        {
            sdlCol.r = static_cast<Uint8>(mColor.r);
            sdlCol.g = static_cast<Uint8>(mColor.g);
            sdlCol.b = static_cast<Uint8>(mColor.b);
            sdlCol.a = static_cast<Uint8>(mColor.a);
        }
        else
        {
            sdlCol.r = 128;
            sdlCol.g = 128;
            sdlCol.b = 128;
        }

        SDL_Surface* textSurface;
        if (mAntiAlias)
        {
            textSurface = TTF_RenderText_Blended(mFont, text.c_str(), sdlCol);
        }
        else
        {
            textSurface = TTF_RenderText_Solid(mFont, text.c_str(), sdlCol);
        }

        SDL_Rect dst, src;
        dst.x = x;
        dst.y = y + yoffset;
        src.w = textSurface->w;
        src.h = textSurface->h;
        src.x = 0;
        src.y = 0;
        dst.w = src.w;
        dst.h = src.h;

        if (sdlGraphics)
        {
            sdlGraphics->drawSDLSurface(textSurface, src, dst);
        }
        else
        {
            sdl2Graphics->drawSDLSurface(textSurface, src, dst);
        }

        SDL_FreeSurface(textSurface);
    }

    void SDLTrueTypeFont::setRowSpacing(int spacing)
    {
        mRowSpacing = spacing;
    }

    int SDLTrueTypeFont::getRowSpacing()
    {
        return mRowSpacing;
    }

    void SDLTrueTypeFont::setGlyphSpacing(int spacing)
    {
        mGlyphSpacing = spacing;
    }

    int SDLTrueTypeFont::getGlyphSpacing()
    {
        return mGlyphSpacing;
    }

    void SDLTrueTypeFont::setAntiAlias(bool antiAlias)
    {
        mAntiAlias = antiAlias;
    }

    bool SDLTrueTypeFont::isAntiAlias()
    {
        return mAntiAlias;
    }

    void SDLTrueTypeFont::setColor(const Color& color)
    {
        mColor = color;
    }
} // namespace gcn

