// EBookDlg.cpp : implementation file
//

#include "stdafx.h"
#include "EBook.h"
#include "EBookDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CEBookDlg dialog

CEBookDlg::CEBookDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CEBookDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CEBookDlg)
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

	// 加载资源文件
	theApp.LoadLanguageRes(theApp.GetLanguage());
	
	m_txtFont.CreateFont(18,0,0,0,FW_BOLD,0,0,0,GB2312_CHARSET,OUT_DEFAULT_PRECIS,
		CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,DEFAULT_PITCH|FF_SWISS,_T("Arial"));
	m_BookFont.CreateFont(16,0,0,0,FW_NORMAL,0,0,0,GB2312_CHARSET,OUT_DEFAULT_PRECIS,
		CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,DEFAULT_PITCH|FF_SWISS,_T("Arial"));
	
	//WCHAR   strRes[MAX_PATH];
	//CString(LoadString(theApp.GetResourceLib(),IDS_MUSICPLAYER_TITLE,strRes,MAX_PATH));
	
	m_TitleText = L"";

	// 初始化背景画刷
	CBitmap tmpBmp;
	// 从资源中加载背景图片
	tmpBmp.LoadBitmap(IDB_EBOOK_WND);
	
	m_BgDC.CreateCompatibleDC(NULL);
	m_BgDC.SelectObject(&tmpBmp);
	
	tmpBmp.DeleteObject();
	// 组合框背景
	tmpBmp.LoadBitmap(IDB_EBOOK_BOOK);
	m_BookBrush.CreatePatternBrush(&tmpBmp);
	// 清理资源
	tmpBmp.DeleteObject();

	m_BookTxtColor = RGB(255,255,255);

}

CEBookDlg::~CEBookDlg()
{
	m_BgDC.DeleteDC();
	m_MemDC.DeleteDC();

	m_txtFont.DeleteObject();
	m_BookFont.DeleteObject();
		
}

void CEBookDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CEBookDlg)
	DDX_Control(pDX, IDC_EDIT_BOOK, m_txtBook);
	DDX_Control(pDX, IDC_BUTTON_UP, m_butUp);
	DDX_Control(pDX, IDC_BUTTON_OPEN, m_butOpen);
	DDX_Control(pDX, IDC_BUTTON_EXIT, m_butExit);
	DDX_Control(pDX, IDC_BUTTON_DOWN, m_butDown);
	DDX_Control(pDX, IDC_BUTTON_BACK, m_butBack);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CEBookDlg, CDialog)
	//{{AFX_MSG_MAP(CEBookDlg)
	ON_WM_PAINT()
	ON_WM_ERASEBKGND()
	ON_WM_CTLCOLOR()
	ON_BN_CLICKED(IDC_BUTTON_OPEN, OnButtonOpen)
	ON_BN_CLICKED(IDC_BUTTON_BACK, OnButtonBack)
	ON_BN_CLICKED(IDC_BUTTON_DOWN, OnButtonDown)
	ON_BN_CLICKED(IDC_BUTTON_EXIT, OnButtonExit)
	ON_BN_CLICKED(IDC_BUTTON_UP, OnButtonUp)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEBookDlg message handlers

BOOL CEBookDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	CenterWindow(GetDesktopWindow());	// center to the hpc screen

	// TODO: Add extra initialization here
	MoveWindow(0,0,320,240);
	m_butExit.MoveWindow(283,7,25,25);
	m_butExit.LoadBitmaps(IDB_EBOOK_CLOSE,IDB_EBOOK_CLOSED);

	m_butUp.MoveWindow(271,37,46,46);
	m_butUp.LoadBitmaps(IDB_EBOOK_UP,IDB_EBOOK_UPD,IDB_EBOOK_UPDIS);

	m_butDown.MoveWindow(271,87,46,46);
	m_butDown.LoadBitmaps(IDB_EBOOK_DOWN,IDB_EBOOK_DOWND,IDB_EBOOK_DOWNDIS);

	m_butOpen.MoveWindow(271,137,46,46);
	m_butOpen.LoadBitmaps(IDB_EBOOK_OPEN,IDB_EBOOK_OPEND);

	m_butBack.MoveWindow(271,187,46,46);
	m_butBack.LoadBitmaps(IDB_EBOOK_BACK,IDB_EBOOK_BACKD,IDB_EBOOK_BACKDIS);

	m_txtBook.MoveWindow(11,22,249,183);
	m_txtBook.SetFont(&m_BookFont);	

	return TRUE;  // return TRUE  unless you set the focus to a control
}



void CEBookDlg::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// TODO: Add your message handler code here
	
	dc.BitBlt(0,0,320,240,&m_BgDC,0,0,SRCCOPY);
	if (!m_TitleText.IsEmpty())
	{
		dc.SetBkMode(TRANSPARENT);
		dc.SetTextColor(RGB(0,0,255));
		dc.SelectObject(m_txtFont);
		dc.DrawText(m_TitleText,CRect(10,208,258,230),DT_VCENTER|DT_CENTER);
	}
	
	// Do not call CDialog::OnPaint() for painting messages
}

BOOL CEBookDlg::OnEraseBkgnd(CDC* pDC) 
{
	// TODO: Add your message handler code here and/or call default
	return TRUE;
	//return CDialog::OnEraseBkgnd(pDC);
}

HBRUSH CEBookDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 
{
	HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
	
	// TODO: Change any attributes of the DC here
	if (nCtlColor == CTLCOLOR_STATIC)
	{
		pDC->SetBkMode(TRANSPARENT);
		pDC->SetTextColor(m_BookTxtColor);
		return m_BookBrush;
	}
	// TODO: Return a different brush if the default is not desired
	return hbr;
}

void CEBookDlg::OnButtonOpen() 
{
	// TODO: Add your control notification handler code here
	COpenBookFileDlg fileDlg;
	
	if (fileDlg.DoModal() == IDOK)
	{
		m_SourceFile = fileDlg.GetFilePath();		
		m_txtBook.SetWindowText(ReadFile(m_SourceFile));
		m_TitleText = GetFileName(m_SourceFile);

		m_butDown.EnableWindow(TRUE);
		m_butUp.EnableWindow(TRUE);
		m_butBack.EnableWindow(TRUE);

		InvalidateRect(CRect(10,208,258,230));
	}
}

void CEBookDlg::OnButtonBack() 
{
	// TODO: Add your control notification handler code here
	m_txtBook.LineScroll(-(m_txtBook.GetFirstVisibleLine() + 1));
}

void CEBookDlg::OnButtonDown() 
{
	// TODO: Add your control notification handler code here
	int line = GetLineHeight(&m_BookFont);

	m_txtBook.LineScroll(line);
	
}

void CEBookDlg::OnButtonExit() 
{
	// TODO: Add your control notification handler code here
	EndDialog(IDOK);
}

void CEBookDlg::OnButtonUp() 
{
	// TODO: Add your control notification handler code here
	int line = GetLineHeight(&m_BookFont);
	
	m_txtBook.LineScroll(-line);
}

CString CEBookDlg::ReadFile(CString sFileName)
{
	char* lpData = NULL;
	int len = 0;
	CString FileTxt;
	CFile file;
	
	FileTxt.Empty();
	
	if(!file.Open(sFileName,CFile::modeRead))
	{		
		MessageBox(L"读取文件错误!");
	}
	else
	{
		// 读取文件内容
		len = file.GetLength();
		lpData = new char[len + 1];
		memset(lpData,0,len+1);
		file.Read(lpData,len);
		file.Close();
		FileTxt = lpData;
		delete lpData;
	}
	// 返回文件字符串
	return FileTxt;
}

int CEBookDlg::GetLineHeight(CFont* pFont)
{
	int Height = 0;
	CDC* pDC = m_txtBook.GetDC();
	CRect txtRect;
	pDC->SelectObject(pFont);
	pDC->DrawText(L"我们",&txtRect,DT_CALCRECT);

	Height = txtRect.Height();
	CRect wndRect;
	m_txtBook.GetClientRect(wndRect);

	return wndRect.Height() / Height;
}

CString CEBookDlg::GetFileName(CString strFileName)
{
	CString FileExt;
    FileExt.Empty();
    // 文件名长度
    int strLen = strFileName.GetLength() - 1;
    
    for(int i = strLen; i >= 0; i--)
    {
        // 查找文件名中最好一个'.'
        if(strFileName.GetAt(i) == '\\')
        {
            // 提取文件扩展名
            FileExt = strFileName.Right(strLen - i);
            break;
        }
    }
	return FileExt;
}