// PropPageFrame.cpp : implementation file
//
#include "stdafx.h"
#include "PropPageFrame.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif


// class CPropPageFrame

BEGIN_MESSAGE_MAP(CPropPageFrame, CWnd)
//{{AFX_MSG_MAP(CPropPageFrame)
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

CPropPageFrame::CPropPageFrame()
:	m_bShowCaption(FALSE),
	m_nCaptionHeight(0),
	m_hCaptionIcon(NULL),
	m_dwMsgFormat(DT_CENTER|DT_VCENTER|DT_NOPREFIX|DT_SINGLELINE)
{
}


CPropPageFrame::~CPropPageFrame()
{
	if (m_Images.GetSafeHandle())
		m_Images.DeleteImageList();
}


/////////////////////////////////////////////////////////////////////
// Operations

BOOL CPropPageFrame::Create(DWORD dwWindowStyle, const RECT &rect, CWnd *pwndParent, UINT nID)
{
	return CWnd::Create(
		AfxRegisterWndClass(CS_HREDRAW|CS_VREDRAW, AfxGetApp()->LoadStandardCursor(IDC_ARROW), GetSysColorBrush(COLOR_3DFACE)),
		_T("屬性頁(yè)框架"),
		dwWindowStyle, rect, pwndParent, nID);
}

void CPropPageFrame::ShowCaption(BOOL bEnable)
{
	m_bShowCaption = bEnable;
	SafeUpdateWindow(CalcCaptionArea());
}


BOOL CPropPageFrame::GetShowCaption() const
{
	return m_bShowCaption;
}


void CPropPageFrame::SetCaption(LPCTSTR lpszCaption, HICON hIcon /*= NULL*/)
{
	m_strCaption = lpszCaption;
	m_hCaptionIcon = hIcon;
	SafeUpdateWindow(CalcCaptionArea());

	//創(chuàng)建圖像列表
	if (m_Images.GetSafeHandle())
		m_Images.DeleteImageList();
	if (hIcon)
	{
		ICONINFO	ii;
		if (!GetIconInfo(hIcon, &ii))
			return;
		
		CBitmap	bmMask;
		bmMask.Attach(ii.hbmMask);
		if (ii.hbmColor) DeleteObject(ii.hbmColor);
		
		BITMAP	bm;
		bmMask.GetBitmap(&bm);
		
		if (!m_Images.Create(bm.bmWidth, bm.bmHeight, ILC_COLOR32|ILC_MASK, 0, 1))
			return;
		
		if (m_Images.Add(hIcon) == -1)
			m_Images.DeleteImageList();
	}
}


CString CPropPageFrame::GetCaption(HICON *pIcon /* = NULL */) const
{
	if (pIcon)
		*pIcon = m_hCaptionIcon;
	return m_strCaption;
}


void CPropPageFrame::SetCaptionHeight(int nCaptionHeight)
{
	m_nCaptionHeight = nCaptionHeight;
	SafeUpdateWindow(CalcCaptionArea());
}


int CPropPageFrame::GetCaptionHeight() const
{
	return m_nCaptionHeight;
}


void CPropPageFrame::SetMsgText(LPCTSTR lpszMsg)
{
	m_strMsg = lpszMsg;
	SafeUpdateWindow(CalcMsgArea());
}


CString CPropPageFrame::GetMsgText() const
{
	return m_strMsg;
}


void CPropPageFrame::SetMsgFormat(DWORD dwFormat)
{
	m_dwMsgFormat = dwFormat;
	SafeUpdateWindow(CalcMsgArea());
}


DWORD CPropPageFrame::GetMsgFormat() const
{
	return m_dwMsgFormat;
}


/////////////////////////////////////////////////////////////////////
// Overridable implementation helpers

void CPropPageFrame::Draw(CDC *pDc)
{
	if (GetShowCaption())
		DrawCaption(pDc, CalcCaptionArea(), m_strCaption, m_hCaptionIcon);
	DrawMsg(pDc, CalcMsgArea(), m_strMsg, m_dwMsgFormat);
}


CRect CPropPageFrame::CalcMsgArea()
{
	ASSERT(IsWindow(GetWnd()->GetSafeHwnd()));

	CRect	rectMsg;
	GetWnd()->GetClientRect(rectMsg);
	if (GetShowCaption())
		rectMsg.top+= GetCaptionHeight();

	return rectMsg;
}


void CPropPageFrame::DrawMsg(CDC *pDc, CRect rect, LPCTSTR lpszMsg, DWORD dwFormat) 
{
	CFont	*pPrevFont = dynamic_cast<CFont*>(pDc->SelectStockObject(DEFAULT_GUI_FONT));
	int		nPrevBkMode = pDc->SetBkMode(TRANSPARENT);

	pDc->DrawText(GetMsgText(), rect, GetMsgFormat());

	pDc->SetBkMode(nPrevBkMode);
	pDc->SelectObject(pPrevFont);
}


CRect	CPropPageFrame::CalcCaptionArea()
{
	ASSERT(IsWindow(GetWnd()->GetSafeHwnd()));

	CRect	rectCaption;
	GetWnd()->GetClientRect(rectCaption);
	if (!GetShowCaption())
		rectCaption.bottom = rectCaption.top;
	else
		rectCaption.bottom = rectCaption.top+GetCaptionHeight();

	return rectCaption;
}


void CPropPageFrame::DrawCaption(CDC *pDc, CRect rect, LPCTSTR lpszCaption, HICON hIcon) 
{
	COLORREF	clrLeft = GetSysColor(COLOR_INACTIVECAPTION);
	COLORREF	clrRight = pDc->GetPixel(rect.right-1, rect.top);
	FillGradientRectH(pDc, rect, clrLeft, clrRight);
	
	//繪制圖標(biāo)
	if (hIcon && m_Images.GetSafeHandle() && m_Images.GetImageCount() == 1)
	{
		IMAGEINFO	ii;
		m_Images.GetImageInfo(0, &ii);
		CPoint		pt(3, rect.CenterPoint().y - (ii.rcImage.bottom-ii.rcImage.top)/2);
		m_Images.Draw(pDc, 0, pt, ILD_TRANSPARENT);
		rect.left+= (ii.rcImage.right-ii.rcImage.left) + 3;
	}
	
	//繪制文本
	rect.left+= 2;
	
	COLORREF	clrPrev = pDc->SetTextColor(GetSysColor(COLOR_CAPTIONTEXT));
	int				nBkStyle = pDc->SetBkMode(TRANSPARENT);
	CFont			*pFont = (CFont*)pDc->SelectStockObject(SYSTEM_FONT);
	
	pDc->DrawText(lpszCaption, rect, DT_LEFT|DT_VCENTER|DT_SINGLELINE|DT_END_ELLIPSIS);
	
	pDc->SetTextColor(clrPrev);
	pDc->SetBkMode(nBkStyle);
	pDc->SelectObject(pFont);
}


/////////////////////////////////////////////////////////////////////
// Implementation helpers

void CPropPageFrame::SafeUpdateWindow(LPCRECT lpRect /* = NULL */)
{
	if (!IsWindow(GetWnd()->GetSafeHwnd()))
		return;

	GetWnd()->InvalidateRect(lpRect, TRUE);
}

CWnd* CPropPageFrame::GetWnd()
{
	return static_cast<CWnd*>(this);
}


void CPropPageFrame::FillGradientRectH(CDC *pDc, const RECT &rect, COLORREF clrLeft, COLORREF clrRight)
{
	//預(yù)計(jì)算
	int	nSteps = rect.right-rect.left;
	int	nRRange = GetRValue(clrRight)-GetRValue(clrLeft);
	int	nGRange = GetGValue(clrRight)-GetGValue(clrLeft);
	int	nBRange = GetBValue(clrRight)-GetBValue(clrLeft);
	
	double	dRStep = (double)nRRange/(double)nSteps;
	double	dGStep = (double)nGRange/(double)nSteps;
	double	dBStep = (double)nBRange/(double)nSteps;
	
	double	dR = (double)GetRValue(clrLeft);
	double	dG = (double)GetGValue(clrLeft);
	double	dB = (double)GetBValue(clrLeft);
	
	CPen	*pPrevPen = NULL;
	for (int x = rect.left; x <= rect.right; ++x)
	{
		CPen	Pen(PS_SOLID, 1, RGB((BYTE)dR, (BYTE)dG, (BYTE)dB));
		pPrevPen = pDc->SelectObject(&Pen);
		pDc->MoveTo(x, rect.top);
		pDc->LineTo(x, rect.bottom);
		pDc->SelectObject(pPrevPen);
		
		dR+= dRStep;
		dG+= dGStep;
		dB+= dBStep;
	}
}

void CPropPageFrame::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// TODO: Add your message handler code here
	Draw(&dc);
	// Do not call CWnd::OnPaint() for painting messages
}