// * This file is part of the COLOBOT source code
// * Copyright (C) 2001-2008, Daniel ROUX & EPSITEC SA, www.epsitec.ch
// *
// * This program is free software: you can redistribute it and/or modify
// * it under the terms of the GNU General Public License as published by
// * the Free Software Foundation, either version 3 of the License, or
// * (at your option) any later version.
// *
// * This program 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 General Public License for more details.
// *
// * You should have received a copy of the GNU General Public License
// * along with this program. If not, see  http://www.gnu.org/licenses/.


#include <windows.h>
#include <stdio.h>
#include <d3d.h>

#include "common/struct.h"
#include "old/d3dengine.h"
#include "common/language.h"
#include "old/math3d.h"
#include "common/event.h"
#include "common/misc.h"
#include "common/iman.h"
#include "common/restext.h"
#include "ui/button.h"



const float DELAY1 = 0.4f;
const float DELAY2 = 0.1f;



// Object's constructor.

CButton::CButton(CInstanceManager* iMan) : CControl(iMan)
{
	m_bCapture = false;
	m_bImmediat = false;
	m_bRepeat = false;
	m_repeat = 0.0f;
}

// Object's destructor.

CButton::~CButton()
{
}


// Creates a new button.

bool CButton::Create(Math::Point pos, Math::Point dim, int icon, EventMsg eventMsg)
{
	if ( eventMsg == EVENT_NULL )  eventMsg = GetUniqueEventMsg();

	CControl::Create(pos, dim, icon, eventMsg);

	if ( icon == -1 )
	{
		char	name[100];
		char*	p;

		GetResource(RES_EVENT, eventMsg, name);
		p = strchr(name, '\\');
		if ( p != 0 )  *p = 0;
		SetName(name);
	}

	return true;
}


// Management of an event.

bool CButton::EventProcess(const Event &event)
{
	if ( (m_state & STATE_VISIBLE) == 0 )  return true;
	if ( m_state & STATE_DEAD )  return true;

	CControl::EventProcess(event);

	if ( event.event == EVENT_FRAME )
	{
		if ( m_bRepeat && m_repeat != 0.0f )
		{
			m_repeat -= event.rTime;
			if ( m_repeat <= 0.0f )
			{
				m_repeat = DELAY2;

				Event newEvent = event;
				newEvent.event = m_eventMsg;
				m_event->AddEvent(newEvent);
				return false;
			}
		}
	}

	if ( event.event == EVENT_LBUTTONDOWN &&
		 (m_state & STATE_VISIBLE)        &&
		 (m_state & STATE_ENABLE)         )
	{
		if ( CControl::Detect(event.pos) )
		{
			m_bCapture = true;
			m_repeat = DELAY1;

			if ( m_bImmediat || m_bRepeat )
			{
				Event newEvent = event;
				newEvent.event = m_eventMsg;
				m_event->AddEvent(newEvent);
			}
			return false;
		}
	}

	if ( event.event == EVENT_MOUSEMOVE && m_bCapture )
	{
	}

	if ( event.event == EVENT_LBUTTONUP && m_bCapture )
	{
		if ( CControl::Detect(event.pos) )
		{
			if ( !m_bImmediat && !m_bRepeat )
			{
				Event newEvent = event;
				newEvent.event = m_eventMsg;
				m_event->AddEvent(newEvent);
			}
		}

		m_bCapture = false;
		m_repeat = 0.0f;
	}

	return true;
}


// Draw button.

void CButton::Draw()
{
	Math::Point	pos, dim, uv1, uv2;
#if !_NEWLOOK
	float	dp;
#endif

	if ( (m_state & STATE_VISIBLE) == 0 )  return;

	if ( m_state & STATE_WARNING )  // shading yellow-black?
	{
		pos.x = m_pos.x-( 8.0f/640.0f);
		pos.y = m_pos.y-( 4.0f/480.0f);
		dim.x = m_dim.x+(16.0f/640.0f);
		dim.y = m_dim.y+( 8.0f/480.0f);
		if ( m_state & STATE_SHADOW )
		{
			DrawShadow(pos, dim);
		}
		DrawWarning(pos, dim);
	}

	if ( m_state & STATE_SHADOW )
	{
		DrawShadow(m_pos, m_dim);
	}

	CControl::Draw();

#if !_NEWLOOK
	if ( m_name[0] != 0                &&  // button with the name?
		 (m_state & STATE_CARD  ) == 0 &&
		 (m_state & STATE_SIMPLY) == 0 )
	{
		m_engine->SetTexture("button2.tga");
		m_engine->SetState(D3DSTATENORMAL);

		dp = 0.5f/256.0f;

		uv1.x = 128.0f/256.0f;
		uv1.y =  96.0f/256.0f;
		uv2.x = 136.0f/256.0f;
		uv2.y = 128.0f/256.0f;

		if ( (m_state & STATE_ENABLE) == 0 )
		{
			uv1.x += 16.0f/256.0f;
			uv2.x += 16.0f/256.0f;
		}

		uv1.x += dp;
		uv1.y += dp;
		uv2.x -= dp;
		uv2.y -= dp;

		pos.y = m_pos.y+5.0f/480.0f;
		dim.y = m_dim.y-10.0f/480.0f;
		pos.x = m_pos.x+5.0f/640.0f;
		dim.x = 3.0f/640.0f;
		DrawIcon(pos, dim, uv1, uv2, 0.0f);

		uv1.x += 8.0f/256.0f;
		uv2.x += 8.0f/256.0f;
		pos.x = m_pos.x+m_dim.x-5.0f/640.0f-3.0f/640.0f;
		DrawIcon(pos, dim, uv1, uv2, 0.0f);
	}
#endif
}


// Management of immediate mode, which sends the event "press"
// before the mouse button is released.

void CButton::SetImmediat(bool bImmediat)
{
	m_bImmediat = bImmediat;
}

bool CButton::RetImmediat()
{
	return m_bImmediat;
}


// Mode management "autorepeat", when the button
// mouse is held down.

void CButton::SetRepeat(bool bRepeat)
{
	m_bRepeat = bRepeat;
}

bool CButton::RetRepeat()
{
	return m_bRepeat;
}