// GUIScroll.cpp: implementation of the CGUIScroll class.
//
//////////////////////////////////////////////////////////////////////

#include "WinInput.h"
#include "GUIScroll.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CGUIScroll::CGUIScroll()
{
	m_bShow = TRUE;
	m_lValue = 0;
	m_lNowPos = 0;

	lMove = 0;
	bScroll = FALSE;

	m_lpBarButton = NULL;
	m_lpUpArrowButton = NULL;
	m_lpDownArrowButton = NULL;

	m_bScrollKind = SCROLL_VSCROLL;
}

CGUIScroll::~CGUIScroll()
{
	if(m_lpDownArrowButton) { delete m_lpDownArrowButton; m_lpDownArrowButton = NULL; }
	if(m_lpUpArrowButton) { delete m_lpUpArrowButton; m_lpUpArrowButton = NULL; }
	if(m_lpBarButton) { delete m_lpBarButton; m_lpBarButton = NULL; }
}

void CGUIScroll::Update(void)
{
	if(m_lMin == m_lMax) return;

	POINT *ptMousePos = g_DeviceInput.GetMousePosition();

	m_lpBarButton->Update();
	if(m_lpUpArrowButton) m_lpUpArrowButton->Update();
	if(m_lpDownArrowButton) m_lpDownArrowButton->Update();

	if(m_lpUpArrowButton && m_lpUpArrowButton->m_nState == BUTTON_CLICK)
	{
		(*m_lValue)--;
		if(*m_lValue < m_lMin) (*m_lValue) = m_lMin;
	} else if(m_lpDownArrowButton && m_lpDownArrowButton->m_nState == BUTTON_CLICK)
	{
		(*m_lValue)++;
		if(*m_lValue > m_lMax) (*m_lValue) = m_lMax;
	}

	if(m_bScrollKind == SCROLL_VSCROLL)
	{
		float fRate = ((float)m_rcEdge.bottom / (m_lMax - m_lMin));

		if(m_lpBarButton->m_nState == BUTTON_PRESS && g_DeviceInput.GetIsLeftMouseDown())
		{
			lMove = ptMousePos->y - (m_lpBarButton->m_lMoveY + m_ptPosition.y + m_lNowPos);

			bScroll = TRUE;
		}

		if(bScroll)
		{
			if(m_lpBarButton->m_nState == BUTTON_NONE)
			{
				bScroll = FALSE;
			}

/*			g_DeviceInput.GetIsLeftMouseUp() || !g_DeviceInput.GetIsFocus() ||
				!g_DeviceInput.InRect(m_rcEdge.left + m_lpBarButton->m_lMoveX + m_ptPosition.x - 3,
									  m_rcEdge.top + m_lpBarButton->m_lMoveY + m_ptPosition.y + lMove - 5,
									  m_rcEdge.right + m_lpBarButton->m_lMoveX + m_ptPosition.x + 3,
									  m_rcEdge.bottom + m_lpBarButton->m_lMoveY + m_ptPosition.y + lMove + 5) )
			{
			}*/

			if(ptMousePos->y < m_lpBarButton->m_lMoveY + m_ptPosition.y + lMove)
			{
				m_lNowPos = 0;
			}
			else if(ptMousePos->y > m_lpBarButton->m_lMoveY + m_ptPosition.y + m_rcEdge.bottom + lMove)
			{
				m_lNowPos = m_rcEdge.bottom;
			}
			else
			{
				m_lNowPos = (ptMousePos->y - (m_lpBarButton->m_lMoveY + m_ptPosition.y)) - lMove;
				if(m_lNowPos < 0) m_lNowPos = 0;
			}
			(*m_lValue) = (m_lNowPos / fRate) + m_lMin;
		}
/*		else
		{
			m_lNowPos = (*m_lValue) * fRate;
		}*/

		if(m_lpBarButton->m_lpNormalButton) m_lpBarButton->m_lpNormalButton->m_nPutY = m_ptPosition.y + m_lNowPos;
		if(m_lpBarButton->m_lpOnMouseButton) m_lpBarButton->m_lpOnMouseButton->m_nPutY = m_ptPosition.y + m_lNowPos;
		if(m_lpBarButton->m_lpClickMouseButton) m_lpBarButton->m_lpClickMouseButton->m_nPutY = m_ptPosition.y + m_lNowPos;
	} else if(m_bScrollKind == SCROLL_HSCROLL)
	{
		float fRate = ((float)m_rcEdge.right / (m_lMax - m_lMin));

		if(m_lpBarButton->m_nState == BUTTON_PRESS && g_DeviceInput.GetIsLeftMouseDown())
		{
			lMove = ptMousePos->x - (m_lpBarButton->m_lMoveX + m_ptPosition.x + m_lNowPos);

			bScroll = TRUE;
		}

		if(bScroll)
		{
			if( g_DeviceInput.GetIsLeftMouseUp() || !g_DeviceInput.GetIsFocus() ||
				!g_DeviceInput.InRect(m_rcEdge.left + m_lpBarButton->m_lMoveX + m_ptPosition.x + lMove - 3,
									  m_rcEdge.top + m_lpBarButton->m_lMoveY + m_ptPosition.y - 5,
									  m_rcEdge.right + m_lpBarButton->m_lMoveX + m_ptPosition.x + lMove + 3,
									  m_rcEdge.bottom + m_lpBarButton->m_lMoveY + m_ptPosition.y + 5) )
			{
				bScroll = FALSE;
			}

			if(ptMousePos->x < m_lpBarButton->m_lMoveX + m_ptPosition.x + lMove)
			{
				m_lNowPos = 0;
			}
			else if(ptMousePos->x > m_lpBarButton->m_lMoveX + m_ptPosition.x + m_rcEdge.right + lMove)
			{
				m_lNowPos = m_rcEdge.right;
			}
			else
			{
				m_lNowPos = (ptMousePos->x - (m_lpBarButton->m_lMoveX + m_ptPosition.x)) - lMove;
				if(m_lNowPos < 0) m_lNowPos = 0;
			}
			(*m_lValue) = (m_lNowPos / fRate) + m_lMin;
		} else
		{
			m_lNowPos = (*m_lValue) * fRate;
		}

		if(m_lpBarButton->m_lpNormalButton) m_lpBarButton->m_lpNormalButton->m_nPutX = m_ptPosition.x + m_lNowPos;
		if(m_lpBarButton->m_lpOnMouseButton) m_lpBarButton->m_lpOnMouseButton->m_nPutX = m_ptPosition.x + m_lNowPos;
		if(m_lpBarButton->m_lpClickMouseButton) m_lpBarButton->m_lpClickMouseButton->m_nPutX = m_ptPosition.x + m_lNowPos;
	}
}

void CGUIScroll::Render(LPDIRECT3DDEVICE8 lpD3DDevice, unsigned char cAlpha)
{
	if(m_lpUpArrowButton) m_lpUpArrowButton->Render(lpD3DDevice, cAlpha);
	if(m_lMin != m_lMax) m_lpBarButton->Render(lpD3DDevice, cAlpha);
	if(m_lpDownArrowButton) m_lpDownArrowButton->Render(lpD3DDevice, cAlpha);
}