togglebutton.cpp

/***************************************************************************
 *   Copyright (C) 2005-2008 by the FIFE team                              *
 *   http://www.fifengine.de                                               *
 *   This file is part of FIFE.                                            *
 *                                                                         *
 *   FIFE 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          *
 ***************************************************************************/
/***************************************************************************
 * Note! Group and groupmap borrows heavily from ideas of Guichan library  *
 * version 0.8.1                                                           *
 ***************************************************************************/



// Standard C++ library includes
#include <cassert>
#include <iostream>

// 3rd party library includes
#include <guichan/mouseevent.hpp>

// FIFE includes
// These includes are split up in two parts, separated by one empty line
// First block: files included from the FIFE root src directory
// Second block: files included from the same folder
#include "util/log/logger.h"

#include "togglebutton.h"

namespace gcn {
    static FIFE::Logger _log(LM_GUI);

    ToggleButton::GroupMap ToggleButton::m_groupMap;

    ToggleButton::ToggleButton(Image *up_file , Image *down_file, Image *hover_file, const std::string& caption, const std::string& group):
        Button(),
        m_upImage(up_file),
        m_downImage(down_file),
        m_hoverImage(hover_file),
        x_downoffset(0),
        y_downoffset(0),
        m_group(group) {

        m_hoverImage = hover_file;
        setFrameSize(0);
        setGroup(m_group);
        adjustSize();
        mCaption = caption;
        m_toggled = false;

        addActionListener(this);
    }

    ToggleButton::~ToggleButton() {
        setGroup(""); // Remove button from group
    }

    void ToggleButton::setDownOffset(int32_t x, int32_t y) {
        x_downoffset = x;
        y_downoffset = y;
    }

    void ToggleButton::draw(Graphics *graphics) {
        Color faceColor = getBaseColor();
        Color highlightColor;
        Color shadowColor;
        int32_t alpha = getBaseColor().a;

        Image* img = NULL;
        int32_t xoffset = 0;
        int32_t yoffset = 0;

        if (isPressed() || m_toggled) {
            faceColor = faceColor - 0x303030;
            faceColor.a = alpha;
            highlightColor = faceColor - 0x303030;
            highlightColor.a = alpha;
            shadowColor = faceColor + 0x303030;
            shadowColor.a = alpha;

            if( m_downImage ) {
                img = m_downImage;
                xoffset = x_downoffset;
                yoffset = y_downoffset;
            }
        } else if(mHasMouse) {
            faceColor = faceColor + 0x303030;
            faceColor.a = alpha;
            highlightColor = faceColor + 0x303030;
            highlightColor.a = alpha;
            shadowColor = faceColor - 0x303030;
            shadowColor.a = alpha;

            if ( m_hoverImage ) {
                img = m_hoverImage;
            }
        } else{
            highlightColor = faceColor + 0x303030;
            highlightColor.a = alpha;
            shadowColor = faceColor - 0x303030;
            shadowColor.a = alpha;

            if (m_upImage) {
                img = m_upImage;
            }
        }


        graphics->setColor(faceColor);
        graphics->fillRectangle(Rectangle(1, 1, getDimension().width-1, getHeight() - 1));

        graphics->setColor(highlightColor);
        graphics->drawLine(0, 0, getWidth() - 1, 0);
        graphics->drawLine(0, 1, 0, getHeight() - 1);

        graphics->setColor(shadowColor);
        graphics->drawLine(getWidth() - 1, 1, getWidth() - 1, getHeight() - 1);
        graphics->drawLine(1, getHeight() - 1, getWidth() - 1, getHeight() - 1);

        graphics->setColor(getForegroundColor());

        if (img) {
            graphics->drawImage(img, xoffset, yoffset);
        }

        int32_t textX;
        int32_t textY = getHeight() / 2 - getFont()->getHeight() / 2;
        switch (getAlignment())
        {
            case Graphics::LEFT:
                textX = 4;
                break;
            case Graphics::CENTER:
                textX = getWidth() / 2;
                break;
            case Graphics::RIGHT:
                textX = getWidth() - 4;
                break;
            default:
                //use the default of Graphics::LEFT
                textX = 4;
                FL_WARN(_log, FIFE::LMsg("ToggleButton::draw() - ") << "Unknown alignment: "
                              << getAlignment() << ".  Using the default of Graphics::LEFT");
        }

        graphics->setFont(getFont());
        if (mCaption.size() > 0) {
            if (isPressed())
                graphics->drawText(getCaption(), textX + 1,
                        textY + 1, getAlignment());
            else
                graphics->drawText(getCaption(), textX, textY, getAlignment());
        }
    }

    void ToggleButton::action(const ActionEvent& actionEvent) {
        setToggled(!m_toggled);
    }

    void ToggleButton::adjustSize() {
        int32_t w = 0;
        int32_t h = w;
        if( m_upImage ) {
            w = m_upImage->getWidth();
            h = m_upImage->getHeight();
        }
        if( m_downImage ) {
            w = std::max(m_downImage->getWidth(), w);
            h = std::max(m_downImage->getHeight(), h);
        }
        if( m_hoverImage ) {
            w = std::max(m_hoverImage->getWidth(), w);
            h = std::max(m_hoverImage->getHeight(), h);
        }

        if( mCaption.length() > 0 ) {
            w = std::max(static_cast<int32_t>(getFont()->getWidth(mCaption)+2*mSpacing), w);
            h = std::max(static_cast<int32_t>(getFont()->getHeight()+2*mSpacing), h);
        }

        setWidth(w);
        setHeight(h);
    }

    void ToggleButton::setUpImage(Image* image) {
        m_upImage = image;
        adjustSize();
    }

    void ToggleButton::setDownImage(Image* image) {
        m_downImage = image;
        adjustSize();
    }

    void ToggleButton::setHoverImage(Image* image) {
        m_hoverImage = image;
        adjustSize();
    }

    bool ToggleButton::isToggled() const {
        return m_toggled;
    }

    void ToggleButton::setToggled(bool toggled) {
        if (toggled && m_group != "") {
            // untoggle all buttons in group
            GroupIterator iter, iterEnd;
            iterEnd = m_groupMap.upper_bound(m_group);

            for (iter = m_groupMap.lower_bound(m_group); iter != iterEnd; iter++) {
                if (iter->second->isToggled()) {
                    iter->second->setToggled(false);
                }
            }
        }

        m_toggled = toggled;
    }

    void ToggleButton::setGroup(const std::string &group) {
        // Remove button from previous group
        if (m_group != "") {
            GroupIterator iter, iterEnd;
            iterEnd = m_groupMap.upper_bound(m_group);

            for (iter = m_groupMap.lower_bound(m_group); iter != iterEnd; iter++) {
                if (iter->second == this) {
                    m_groupMap.erase(iter);
                    break;
                }
            }
        }

        // Add button to new group
        if (group != "") {
            m_groupMap.insert( std::pair<std::string, ToggleButton *>(group, this));
        }

        m_group = group;
    }

    const std::string &ToggleButton::getGroup() const {
        return m_group;
    }

    int32_t ToggleButton::getDownXOffset() const {
        return x_downoffset;
    }

    int32_t ToggleButton::getDownYOffset() const {
        return y_downoffset;
    }

}
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