商业编程-源码-报表与打印源代码 printing_class_library_code.zip

#include "stdafx.h" #include "CPage.h" //////////////////////////////////////////////////////////////////////////// // Desc: Constructor // params: RECT ( the area allowed to print to ) CDC* Display context nMapMode the mapping mode // Returns: nada /////////////////////////////////////////////////////////////////////////// CPage::CPage(RECT rectDraw, CDC* pDC, int nMapMode) { if(nMapMode !=MM_TEXT && nMapMode != MM_ANISOTROPIC) nMapMode=MM_TEXT; pDC->SetMapMode(nMapMode ); m_PrtDesc.tm=&tm; StateInd=-1; if(nMapMode==MM_ANISOTROPIC) { pDC->SetWindowOrg (0, 0 ); // if you change these numbers you must also change them in maxWidth // and maxLength for ConvertToMappedUnits() conversion to be correct pDC->SetWindowExt (1000, 1000 ); pDC->SetViewportOrg (rectDraw.left,rectDraw.top ); pDC->SetViewportExt (rectDraw.right, rectDraw.bottom ); // SEE ABOVE m_PrtDesc.n_maxWidth=1000; m_PrtDesc.n_maxLength=1000; m_PrtDesc.rc.left=0; m_PrtDesc.rc.top=0; // SEE ABOVE m_PrtDesc.rc.right=1000; m_PrtDesc.rc.bottom=1000; } else { m_PrtDesc.n_maxWidth=rectDraw.right; m_PrtDesc.n_maxLength=rectDraw.bottom; m_PrtDesc.rc.left=rectDraw.left; m_PrtDesc.rc.top=rectDraw.top; m_PrtDesc.rc.right=rectDraw.right; m_PrtDesc.rc.bottom=rectDraw.bottom; } // all the textmetrics we need m_PixPerInchX=pDC->GetDeviceCaps(LOGPIXELSX); m_PixPerInchY=pDC->GetDeviceCaps(LOGPIXELSY); // determine how many inches wide and deep the rectangle is m_WidthInches=rectDraw.right/(double)m_PixPerInchX; m_LengthInches=rectDraw.bottom/(double)m_PixPerInchY; m_PrtDesc.pDC=pDC; // default font stuff m_PrtDesc.FontName="Times New Roman"; m_PrtDesc.PointSize=10; m_PrtDesc.m_NextCharPos=0; // default print flags m_PrtDesc.uFillFlags=FILL_NONE; m_PrtDesc.uTextFlags=TEXT_NOCLIP|TEXT_LEFT; m_PrtDesc.uPenFlags=PEN_SOLID; // do not change this value m_PrtDesc.m_MinDisplacement=10; // modify to increase line spacing but should be no smaller than this m_Spacing=1.0; } //////////////////////////////////////////////////////////////////////////// // Desc: Destructor // params: None // Returns: None /////////////////////////////////////////////////////////////////////////// CPage::~CPage() { CPrintRegion* pRegion; for(int y=0;y < m_RegionList.GetSize();++y) { pRegion=(CPrintRegion*)m_RegionList[y]; delete pRegion; } m_RegionList.RemoveAll(); } void CPage::SaveState() { m_SaveState[++StateInd]=m_PrtDesc; } void CPage::RestoreState() { if(StateInd==-1) return; m_PrtDesc=m_SaveState[StateInd--]; } //////////////////////////////////////////////////////////////////////////// // PARAMETER ACCESS ROUTINES //////////////////////////////////////////////////////////////////////////// // Desc: Changes the width of the default allowable printing area // params: The new right side coordinates in mapping units:If 0 there is no change // if -1 margin is set to maximum allowable size // Returns: The previous coordinates /////////////////////////////////////////////////////////////////////////// int CPage::SetRightMargin(int w) { int temp=m_PrtDesc.rc.right; if(w > 0) m_PrtDesc.rc.right=w; if(w==-1) m_PrtDesc.rc.right=m_PrtDesc.n_maxWidth; return temp; } //////////////////////////////////////////////////////////////////////////// // Desc: Sets new coordinates for allowable printing rectangle depth // params: The new coordinate in mapping units:If 0 there is no change // if -1 margin is set to maximum allowable size // Returns: The old coordinate /////////////////////////////////////////////////////////////////////////// int CPage::SetBottomMargin(int w) { int temp=m_PrtDesc.rc.bottom; if(w > 0) m_PrtDesc.rc.bottom=w; if(w== -1) m_PrtDesc.rc.right=m_PrtDesc.n_maxLength; return temp; } //////////////////////////////////////////////////////////////////////////// // Desc: See above // params: Same as above except units are in inches // Returns: See above /////////////////////////////////////////////////////////////////////////// double CPage::SetRightMargin(double w) { int temp=m_PrtDesc.rc.right; if(w > 0) m_PrtDesc.rc.right=ConvertToMappedUnits(w,HORZRES); if(w==-1) m_PrtDesc.rc.right=m_PrtDesc.n_maxWidth; return ConvertToInches(temp,HORZRES); } //////////////////////////////////////////////////////////////////////////// // Desc: See Above // params: Same as above except units are in inches: if 0 no change // Returns: See Above /////////////////////////////////////////////////////////////////////////// double CPage::SetBottomMargin(double w) { int temp=m_PrtDesc.rc.bottom; if(w > 0) m_PrtDesc.rc.bottom=ConvertToMappedUnits(w,VERTRES); if(w==-1) m_PrtDesc.rc.right=m_PrtDesc.n_maxLength; return ConvertToInches(temp,VERTRES); } //////////////////////////////////////////////////////////////////////////// // Desc: Changes the space returned for the next logical line // params: The constant applied to the fontsize to produce the spacing The formula is // ConvertToMappedUnits(PointSize/72.0,VERTRES)*(m_Spacing-1)) // Returns: The old spacing factor /////////////////////////////////////////////////////////////////////////// double CPage::SetLineSpacing(double Spacing) { double temp=m_Spacing; if(Spacing > 0) m_Spacing=Spacing; return temp; } //////////////////////////////////////////////////////////////////////////// // Desc: Changes the font face used for ptinting // params: The new face name IE Courier // Returns: he old font face /////////////////////////////////////////////////////////////////////////// LPCSTR CPage::SetFont(LPCSTR FontName) { static char buff[40]; strcpy(buff,m_PrtDesc.FontName); if(FontName != NULL) m_PrtDesc.FontName=FontName; return buff; } //////////////////////////////////////////////////////////////////////////// // Desc: Sets The text Color if the device supports colored text // params: The color // Returns:The old color /////////////////////////////////////////////////////////////////////////// COLORREF CPage::SetColor(COLORREF Color) { return m_PrtDesc.pDC->SetTextColor(Color); } //////////////////////////////////////////////////////////////////////////// // Desc: changes the default font size // params: the size // Returns: the old size /////////////////////////////////////////////////////////////////////////// int CPage::SetFontSize(int sz) { int temp=m_PrtDesc.PointSize; m_PrtDesc.PointSize=sz; return temp; } //////////////////////////////////////////////////////////////////////////// // Desc: fetch the display context used by this object // params: // Returns: a pointer to the display context /////////////////////////////////////////////////////////////////////////// CDC* CPage::GetDisplayContext() { return m_PrtDesc.pDC; } //////////////////////////////////////////////////////////////////////////// // Desc: returns the next logical print column. Used in printing continious text that // may have different text attributes // params:Convert flag to convert to inches.AddOffset flag add a extra space // Returns: the logical column offset.double is used so it can handle all mapping units. // if Convert is true the result is in inches else in device units. /////////////////////////////////////////////////////////////////////////// double CPage::GetNextLogicalColumn(BOOL Convert,BOOL AddOffset) { if(Convert==FALSE) { if(AddOffset) return m_nNextPos+tm.tmMaxCharWidth; else return m_nNextPos; } else { if(AddOffset) return ConvertToInches(m_nNextPos+tm.tmMaxCharWidth,HORZRES); else return ConvertToInches(m_nNextPos,HORZRES); } } ////////////////////////////////////////////////