// BmpProgress.cpp : 实现文件
//

#include "stdafx.h"
#include "MediaPlayer.h"
#include "BmpProgress.h"


// CBmpProgress

IMPLEMENT_DYNAMIC(CBmpProgress, CProgressCtrl)

CBmpProgress::CBmpProgress()
{
	m_NormalID = 0;
	m_DownID = 0;	

	m_Min = 0;
	m_Max = 0;
}

CBmpProgress::~CBmpProgress()
{
	m_BackDC.DeleteDC();
	m_FrontDC.DeleteDC();
}


BEGIN_MESSAGE_MAP(CBmpProgress, CProgressCtrl)
	ON_WM_PAINT()
	ON_WM_ERASEBKGND()
//	ON_WM_LBUTTONDOWN()
END_MESSAGE_MAP()



// CBmpProgress 消息处理程序



void CBmpProgress::OnPaint()
{
	CPaintDC dc(this); // device context for painting
	// TODO: 在此处添加消息处理程序代码
	// 不为绘图消息调用 CProgressCtrl::OnPaint()

	if (m_NormalID && m_DownID)
	{
		dc.BitBlt(0,0,m_Pos,m_bmpSize.cy,&m_FrontDC,0,0,SRCCOPY);
		dc.BitBlt(m_Pos,0,m_bmpSize.cx - m_Pos + 1,m_bmpSize.cy,&m_BackDC,m_Pos,0,SRCCOPY);
	}
}

BOOL CBmpProgress::OnEraseBkgnd(CDC* pDC)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值
	return FALSE;
	//return CProgressCtrl::OnEraseBkgnd(pDC);
}

void CBmpProgress::LoadBitmap(int iNormal, int iDown)
{
	m_NormalID = iNormal;
	m_DownID = iDown;

	CBitmap bmpBackground;
	BITMAP	bmpInfo;
	bmpBackground.LoadBitmap(m_NormalID);
	bmpBackground.GetBitmap(&bmpInfo);

	m_BackDC.CreateCompatibleDC(NULL);
	m_BackDC.SelectObject(&bmpBackground);

	m_bmpSize.cx = bmpInfo.bmWidth;
	m_bmpSize.cy = bmpInfo.bmHeight;

	bmpBackground.DeleteObject();

	bmpBackground.LoadBitmap(m_DownID);	
	m_FrontDC.CreateCompatibleDC(NULL);
	m_FrontDC.SelectObject(&bmpBackground);

	bmpBackground.DeleteObject();
}

void CBmpProgress::SetPos(int nPos)
{
	if (m_Max - m_Min > 0)
	{
		m_Pos = nPos * m_bmpSize.cx/(m_Max - m_Min);
		Invalidate();
	} 
	else
	{
		m_Max = m_Min = 0;
	}

	Invalidate();
}

void CBmpProgress::SetRange(int nMin, int nMax)
{
	m_Max = nMax;
	m_Min = nMin;
}

//void CBmpProgress::OnLButtonDown(UINT nFlags, CPoint point)
//{
//	// TODO: 在此添加消息处理程序代码和/或调用默认值
//	CRect rc;
//	GetClientRect(&rc);
//
//	int iPos = (point.x * (m_Max - m_Min)) / (rc.right - rc.left);
//
//	SetPos(iPos);
//
//	CProgressCtrl::OnLButtonDown(nFlags, point);
//}