text.cpp

Embedded VC “是男人就挺过二十秒”源代码

/**///////////////////////////////////////////////////////////////////////
// Text.cpp: implementation of the CText class.
//
/**///////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "Text.h"


//--------------------------------------------------------------------
//Macro define
#define DEFAULT_BKMODE            TRANSPARENT
#define DEFAULT_TEXT_COLOR        RGB(0,0,0)
#define DEFAULT_BK_COLOR        RGB(255,255,255)
#define DEFAULT_FORMAT            (DT_LEFT | DT_SINGLELINE)
#define DEFAULT_TEXT_HEIGHT        0


//--------------------------------------------------------------------
/**///////////////////////////////////////////////////////////////////////
// Construction/Destruction
/**///////////////////////////////////////////////////////////////////////

CText::CText()
{
    memset(&m_rcWndPos,0,sizeof(m_rcWndPos));
    m_pszText = NULL;
    m_ulSizeText = 0;
    m_iBkMode = DEFAULT_BKMODE;
    m_crTextColor = DEFAULT_TEXT_COLOR;
    m_crBkColor = DEFAULT_BK_COLOR;
    m_uFormat = DEFAULT_FORMAT;
    m_iTextHeight = DEFAULT_TEXT_HEIGHT;
}

CText::~CText()
{
    if(m_pszText != NULL)
    {
        delete [] m_pszText;
        m_pszText = NULL;
    }
}

//--------------------------------------------------------------------
//Description:
//    Set the control position
//
//--------------------------------------------------------------------
void CText::SetPosition(const RECT *prc)
{
    m_rcWndPos = *prc;
}


//--------------------------------------------------------------------
//Description:
//    Set the text. If you want to display the text ,you should call the Display()
//
//--------------------------------------------------------------------
BOOL CText::SetText(const TCHAR *pszText)
{
    ULONG ulLen = _tcslen(pszText);

    if(m_pszText == NULL)
    {        
        m_pszText = new TCHAR [ulLen + 1];
        
        if(m_pszText == NULL)
        {
            return FALSE;
        }

        m_ulSizeText = ulLen + 1;
    }
    else if(ulLen + 1 > m_ulSizeText)
    {
        delete [] m_pszText;

        m_pszText = new TCHAR [ulLen + 1];
        
        if(m_pszText == NULL)
        {
            return FALSE;
        }

        m_ulSizeText = ulLen + 1;
    }

    _tcscpy(m_pszText,pszText);

    return TRUE;
}


//--------------------------------------------------------------------
//Description:
//    Display the text stored.
//
//--------------------------------------------------------------------
void CText::Draw(HDC hdc)
{
    COLORREF crOldTextColor = ::SetTextColor(hdc,m_crTextColor);
    COLORREF crOldBkColor = ::SetBkColor(hdc,m_crBkColor);
    int iOldMode = ::SetBkMode(hdc,m_iBkMode);

    LOGFONT lf = {0};
    HFONT hFontNew, hFontOld;
    lf.lfQuality = CLEARTYPE_QUALITY;
    lf.lfHeight = -1 * (m_iTextHeight * GetDeviceCaps(hdc,LOGPIXELSY) / 72); //pound
    hFontNew = CreateFontIndirect(&lf);
    hFontOld = (HFONT) SelectObject(hdc, hFontNew);

    DrawText(hdc,m_pszText,-1,&m_rcWndPos,m_uFormat);

    SelectObject(hdc, hFontOld);
    DeleteObject(hFontNew);

    ::SetTextColor(hdc,crOldTextColor);
    ::SetBkColor(hdc,crOldBkColor);
    ::SetBkMode(hdc,iOldMode);
}


//--------------------------------------------------------------------
//Description:
//    Set the background mode.
//
//Parameters:
//    iMode: [in] The value is just like as follow:
//        OPAQUE      -- Background is filled with the current background color before the text, 
//                        hatched brush, or pen is drawn. 
//        TRANSPARENT -- Background remains untouched. 

//--------------------------------------------------------------------
BOOL CText::SetBkMode(int iMode)
{
    if(iMode == OPAQUE || iMode == TRANSPARENT)
    {
        m_iBkMode = iMode;
        return TRUE;
    }
    else
    {
        return FALSE;
    }
}


//--------------------------------------------------------------------
//Description:
//    Set the text color
//
//--------------------------------------------------------------------
void CText::SetTextColor(COLORREF crColor)
{
    m_crTextColor = crColor;
}


//--------------------------------------------------------------------
//Description:
//    Set the background color
//
//--------------------------------------------------------------------
void CText::SetBkColor(COLORREF crColor)
{
    m_crBkColor = crColor;
}

//--------------------------------------------------------------------
//Description:
//    Set Format.
//
//Parameters:
//    The value you should see the uFormat of DrawText()
//--------------------------------------------------------------------
void CText::SetFormat(UINT uFormat)
{
    m_uFormat = uFormat;
}


//--------------------------------------------------------------------
//Description:
//    Set the height of text as pound
//
//---------------------------------------------------------------------
void CText::SetTextHeight(int iHeight)
{
    m_iTextHeight = iHeight;
}


//--------------------------------------------------------------------
//Description:
//    Get the position as rect
//
//---------------------------------------------------------------------
void CText::GetPosition(RECT *prcOut)
{
    *prcOut = m_rcWndPos;
}