numbertext.cpp

电子相册程序,实现图片的浏览,放大缩小等动能!evc4.0下编译通过!

// NumberText.cpp : implementation file
//

#include "stdafx.h"
#include "eBookBrow.h"
#include "NumberText.h"

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

/////////////////////////////////////////////////////////////////////////////
// CNumberText

CNumberText::CNumberText()
{
	m_strText = CString(_T("当前还未打开相册"));
	m_bkColor = RGB(255, 255, 255);
	m_textColor = RGB(0,0, 255);
}

CNumberText::~CNumberText()
{
	if(m_compDC.GetSafeHdc() != NULL)
	{
		m_compDC.DeleteDC();
	}
	
	if(m_bkDC.GetSafeHdc() != NULL)
	{
		m_bkDC.DeleteDC();
	}
}


BEGIN_MESSAGE_MAP(CNumberText, CStatic)
	//{{AFX_MSG_MAP(CNumberText)
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CNumberText message handlers

BOOL CNumberText::Create(DWORD style, const RECT& rect, CWnd* pParentWnd, UINT ID)
{
	BOOL Result;
	Result =  CStatic::Create(NULL, style, rect, pParentWnd, ID);
	GetClientRect(m_Rect);
    
	CPaintDC dc(this);
	if(m_bkDC.GetSafeHdc() == NULL)
	{
		m_bkDC.CreateCompatibleDC(&dc);
		m_bkBitmap.CreateCompatibleBitmap(&dc, m_Rect.Width(), m_Rect.Height());
		m_bkDC.SelectObject(&m_bkBitmap);
	}
	if(m_compDC.GetSafeHdc() == NULL)
	{
		m_compDC.CreateCompatibleDC(&dc);
		m_compBitmap.CreateCompatibleBitmap(&dc, m_Rect.Width(), m_Rect.Height());
		m_compDC.SelectObject(&m_compBitmap);
	}

	DrawBK();
	return Result;

}

void CNumberText::UpdateText(int num, int maxNum)
{
	m_strText.Format(_T("第%d页/共%d页"), num, maxNum);
	DrawNumText();
}

void CNumberText::DrawBK()
{
	m_bkDC.FillSolidRect(&m_Rect, RGB(255, 255, 255));
	m_compDC.BitBlt(0,0,m_Rect.Width(), m_Rect.Height(), &m_bkDC, 0,0, SRCCOPY);
	DrawNumText();
}

void CNumberText::DrawNumText()
{
	CFont font;
	//font.CreateFont(50, 0, 0, 0, FW_BOLD, FALSE, FALSE, 0, ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY,  DEFAULT_PITCH | FF_SWISS, "Arial");
	VERIFY(font.CreateFont(
		20,                        // nHeight
		8,                         // nWidth
		0,                         // nEscapement
		0,                         // nOrientation
		FW_BOLD,                 // nWeight
		FALSE,                     // bItalic
		FALSE,                     // bUnderline
		0,                         // cStrikeOut
		ANSI_CHARSET,              // nCharSet
		OUT_DEFAULT_PRECIS,        // nOutPrecision
		CLIP_DEFAULT_PRECIS,       // nClipPrecision
		DEFAULT_QUALITY,           // nQuality
		DEFAULT_PITCH | FF_SWISS,  // nPitchAndFamily
		"Arial"));                 // lpszFacename

    m_compDC.BitBlt(0,0,m_Rect.Width(), m_Rect.Height(), &m_bkDC, 0,0, SRCCOPY);
	m_compDC.SetTextColor(m_textColor);
	m_compDC.SelectObject(&font);
	CSize strSize = m_compDC.GetTextExtent(m_strText);
	m_compDC.TextOut((m_Rect.Width() - strSize.cx)/2,(m_Rect.Height() - strSize.cy)/2, m_strText);
	font.DeleteObject();
	Invalidate();
}

void CNumberText::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// TODO: Add your message handler code here
	dc.BitBlt(0, 0, m_Rect.Width(), m_Rect.Height(), &m_compDC, 0, 0, SRCCOPY);
	// Do not call CStatic::OnPaint() for painting messages
}