/*      _______   __   __   __   ______   __   __   _______   __   __
 *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
 *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
 *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * Copyright (c) 2004, 2005, 2006, 2007 Olof Naessén and Per Larsson
 *
 *                                                         Js_./
 * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
 * Olof Naessén 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'
 * that the following conditions are met:       j<<WP+k/);.        _W=j f
 * 1. Redistributions of source code must       .$%w\/]Q  . ."'  .  mj$
 *    retain the above copyright notice,        ]E.pYY(Q]>.   a     J@\
 *    this list of conditions and the           j(]1u<sE"L,. .   ./^ ]{a
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 * 2. Redistributions in binary form must        )_]X{Z('a_"a7'<a"a,  ]"[
 *    reproduce the above copyright notice,       #}<]m7`Za??4,P-"'7. ).m
 *    this list of conditions and the            ]d2e)Q(<Q(  ?94   b-  LQ/
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 *    documentation and/or other materials      .Z!=J ]e []('-4f _ ) -.)m]'
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 *    names of its contributors may be used     =3)= _f  (_yQmWW$#(    "
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT       )/ )/           !
 * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY         <  (; sac    ,    '
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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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 "guisan/widgets/checkbox.hpp"

#include "guisan/font.hpp"
#include "guisan/graphics.hpp"
#include "guisan/key.hpp"
#include "guisan/mouseinput.hpp"

namespace gcn
{
	CheckBox::CheckBox()
	{
		setSelected(false);

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

	CheckBox::CheckBox(const std::string& caption, bool selected)
	{
		setCaption(caption);
		setSelected(selected);

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

		adjustSize();
	}

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

		graphics->setFont(getFont());
		if (isEnabled())
			graphics->setColor(getForegroundColor());
		else
			graphics->setColor(Color(128, 128, 128));

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

		graphics->drawText(getCaption(), h - 2, 1, Graphics::LEFT, isEnabled());
	}

	void CheckBox::drawBorder(Graphics* graphics)
	{
		Color faceColor = getBaseColor();
		Color highlightColor, shadowColor;
		int alpha = getBaseColor().a;
		int width = getWidth() + static_cast<int>(getBorderSize()) * 2 - 1;
		int height = getHeight() + static_cast<int>(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)
	{
		const int h = getHeight() - 2;
		const 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(1, 1, h, 1);
		graphics->drawLine(1, 1, 1, h);

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

		Color backCol = getBackgroundColor();
		if (!isEnabled())
			backCol = backCol - 0x303030;
		graphics->setColor(backCol);
		graphics->fillRectangle(Rectangle(2, 2, h - 2, h - 2));

		if (isEnabled())
			graphics->setColor(getForegroundColor());
		else
			graphics->setColor(Color(128, 128, 128));

		if (isFocused())
		{
			graphics->drawRectangle(Rectangle(0, 0, getWidth(), getHeight()));
		}

		if (mSelected)
		{
			graphics->drawLine(3, 5, 3, h - 2);
			graphics->drawLine(4, 5, 4, h - 2);

			graphics->drawLine(5, h - 3, h - 2, 4);
			graphics->drawLine(5, h - 4, h - 4, 5);
		}
	}

	bool CheckBox::isSelected() const
	{
		return mSelected;
	}

	void CheckBox::setSelected(bool selected)
	{
		mSelected = selected;
	}

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

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

	void CheckBox::keyPressed(KeyEvent& keyEvent)
	{
		const Key key = keyEvent.getKey();

		if (key.getValue() == Key::ENTER ||
			key.getValue() == Key::SPACE)
		{
			toggleSelected();
			keyEvent.consume();
		}
	}

	void CheckBox::mouseClicked(MouseEvent& mouseEvent)
	{
		if (mouseEvent.getButton() == MouseEvent::LEFT)
		{
			toggleSelected();
		}
	}

	void CheckBox::mouseDragged(MouseEvent& mouseEvent)
	{
		mouseEvent.consume();
	}

	void CheckBox::adjustSize()
	{
		const int height = getFont()->getHeight() + 2;

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

	void CheckBox::toggleSelected()
	{
		mSelected = !mSelected;
		generateAction();
	}
}
