checkbox.cpp

Linux系统下的《红色警戒》游戏

/*      _______   __   __   __   ______   __   __   _______   __   __                 
 *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\                
 *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /                 
 *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /                  
 *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /                   
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /                    
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/                      
 *
 * Copyright (c) 2004, 2005 darkbits                        Js_./
 * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
 * Olof Naess閚 a.k.a jansem/yakslem                _asww7!uY`>  )\a//
 *                                                 _Qhm`] _f "'c  1!5m
 * Visit: http://guichan.darkbits.org             )Qk<P ` _: :+' .'  "{[
 *                                               .)j(] .d_/ '-(  P .   S
 * License: (BSD)                                <Td/Z <fP"5(\"??"\a.  .L
 * Redistribution and use in source and          _dV>ws?a-?'      ._/L  #'
 * binary forms, with or without                 )4d[#7r, .   '     )d`)[
 * modification, are permitted provided         _Q-5'5W..j/?'   -?!\)cam'
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 * 1. Redistributions of source code must       .$%w\/]Q  . ."'  .  mj$
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 * (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 "guichan/widgets/checkbox.h"

namespace gcn
{
    
    CheckBox::CheckBox()
    {
        setMarked(false);
        
        setFocusable(true);
        addMouseListener(this);
        addKeyListener(this);
    }
    
    CheckBox::CheckBox(const std::string &caption, bool marked)
    {
        setCaption(caption);
        setMarked(marked);

        setFocusable(true);
        addMouseListener(this);
        addKeyListener(this);

        adjustSize();
    }
    
    void CheckBox::draw(Graphics* graphics)
    {
        drawBox(graphics);

        graphics->setFont(getFont());
        graphics->setColor(getForegroundColor());

        int h = getHeight() + getHeight() / 2;

        graphics->drawText(getCaption(), h - 2, 0);

        if (hasFocus() && !getCaption().empty())
        {        
            graphics->drawRectangle(Rectangle(h - 4, 0, getWidth() - h + 3, getHeight()));
        }        
    }

    void CheckBox::drawBorder(Graphics* graphics)
    {
        Color faceColor = getBaseColor();
        Color highlightColor, shadowColor;
        int alpha = getBaseColor().a;
        int width = getWidth() + getBorderSize() * 2 - 1;
        int height = getHeight() + getBorderSize() * 2 - 1;
        highlightColor = faceColor + 0x303030;
        highlightColor.a = alpha;
        shadowColor = faceColor - 0x303030;
        shadowColor.a = alpha;
        
        unsigned int i;
        for (i = 0; i < getBorderSize(); ++i)
        {
            graphics->setColor(shadowColor);
            graphics->drawLine(i,i, width - i, i);
            graphics->drawLine(i,i + 1, i, height - i - 1);
            graphics->setColor(highlightColor);
            graphics->drawLine(width - i,i + 1, width - i, height - i); 
            graphics->drawLine(i,height - i, width - i - 1, height - i); 
        }
    }

    void CheckBox::drawBox(Graphics *graphics)
    {
        int h = getHeight() - 1;

        int alpha = getBaseColor().a;
        Color faceColor = getBaseColor();
        faceColor.a = alpha;
        Color highlightColor = faceColor + 0x303030;
        highlightColor.a = alpha;
        Color shadowColor = faceColor - 0x303030;      
        shadowColor.a = alpha;

        graphics->setColor(shadowColor);
        graphics->drawLine(0, 0, h, 0);
        graphics->drawLine(0, 1, 0, h);

        graphics->setColor(highlightColor);
        graphics->drawLine(h, 1, h, h);
        graphics->drawLine(1, h, h - 1, h);

        graphics->setColor(getBackgroundColor());
        graphics->fillRectangle(Rectangle(1, 1, h - 1, h - 1));

        graphics->setColor(getForegroundColor());
    
        if (mMarked)
        {
            graphics->drawLine(3, 5, 3, h - 3);
            graphics->drawLine(4, 5, 4, h - 3);
            
             graphics->drawLine(5, h - 4, h - 2, 3);
             graphics->drawLine(5, h - 5, h - 4, 4);      
        }        
    }
  
    bool CheckBox::isMarked() const
    {
        return mMarked;        
    } 
    
    void CheckBox::setMarked(bool marked)
    {
        mMarked = marked;
    }

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

    void CheckBox::setCaption(const std::string &caption)
    {
        mCaption = caption;
    }
  
    bool CheckBox::keyPress(const Key& key)
    {
        if (key.getValue() == Key::ENTER ||
            key.getValue() == Key::SPACE)
        {
            toggle();
            return true;
        }
        return false;
    }
  
    void CheckBox::mouseClick(int x, int y, int button, int count)
    {
        if (button == MouseInput::LEFT)
        {
            toggle();
        }
    }
  
    void CheckBox::adjustSize()
    {
        int height = getFont()->getHeight();

        setHeight(height);
        setWidth(getFont()->getWidth(mCaption) + height + height / 2);
    }

    void CheckBox::toggle()
    {
        mMarked = !mMarked;
        generateAction();
    }  
}