/***************************************************************************
 *   Copyright (c) 2017-2019 by the fifechan team                               *
 *   https://github.com/fifengine/fifechan                                 *
 *   This file is part of fifechan.                                        *
 *                                                                         *
 *   fifechan is free software; you can redistribute it and/or             *
 *   modify it under the terms of the GNU Lesser General Public            *
 *   License as published by the Free Software Foundation; either          *
 *   version 2.1 of the License, or (at your option) any later version.    *
 *                                                                         *
 *   This library is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the                 *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
 ***************************************************************************/

/*      _______   __   __   __   ______   __   __   _______   __   __
 *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
 *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
 *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * 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 "fifechan/widgets/label.hpp"

#include "fifechan/exception.hpp"
#include "fifechan/font.hpp"
#include "fifechan/graphics.hpp"

namespace fcn
{
    Label::Label()
    {
        mAlignment = Graphics::Left;

		adjustSize();
    }

    Label::Label(const std::string& caption)
    {
        mCaption = caption;
        mAlignment = Graphics::Left;

        adjustSize();
    }

    const std::string &Label::getCaption() const
    {
        return mCaption;
    }

    void Label::setCaption(const std::string& caption)
    {
        mCaption = caption;
		adjustSize();
    }

    void Label::setAlignment(Graphics::Alignment alignment)
    {
        mAlignment = alignment;
    }

    Graphics::Alignment Label::getAlignment() const
    {
        return mAlignment;
    }

    void Label::resizeToContent(bool recursiv) {
        adjustSize();
    }
    
    void Label::adjustSize() {
        setSize(2 * getBorderSize() + getPaddingLeft() + getPaddingRight() + getFont()->getWidth(mCaption),
            2 * getBorderSize() + getPaddingTop() + getPaddingBottom() + getFont()->getHeight());
    }

    void Label::draw(Graphics* graphics)
    {
		// draw border or frame
        if (getBorderSize() > 0) {
            if (isFocused() && (getSelectionMode() & Widget::Selection_Border) == Widget::Selection_Border) {
                drawSelectionFrame(graphics);
            } else {
                drawBorder(graphics);
            }
        }
		Rectangle offsetRec(getBorderSize(), getBorderSize(), 2 * getBorderSize(), 2 * getBorderSize());
        int textX;
		int textY = offsetRec.y + getPaddingTop() + (getHeight() - offsetRec.height - getPaddingTop() - getPaddingBottom() - getFont()->getHeight()) / 2;

        switch (getAlignment())
        {
          case Graphics::Left:
              textX = offsetRec.x + getPaddingLeft();
              break;
          case Graphics::Center:
              textX = offsetRec.x + getPaddingLeft() + (getWidth() - offsetRec.width - getPaddingLeft() - getPaddingRight()) / 2;
              break;
          case Graphics::Right:
              textX = getWidth() - offsetRec.x - getPaddingRight();
              break;
          default:
              throw FCN_EXCEPTION("Unknown alignment.");
        }

        graphics->setFont(getFont());
        graphics->setColor(getForegroundColor());
        graphics->drawText(getCaption(), textX, textY, getAlignment());
    }
}