Show atlprint.h syntax highlighted
// Windows Template Library - WTL version 8.0
// Copyright (C) Microsoft Corporation. All rights reserved.
//
// This file is a part of the Windows Template Library.
// The use and distribution terms for this software are covered by the
// Common Public License 1.0 (http://opensource.org/licenses/cpl.php)
// which can be found in the file CPL.TXT at the root of this distribution.
// By using this software in any fashion, you are agreeing to be bound by
// the terms of this license. You must not remove this notice, or
// any other, from this software.
#ifndef __ATLPRINT_H__
#define __ATLPRINT_H__
#pragma once
#ifndef __cplusplus
#error ATL requires C++ compilation (use a .cpp suffix)
#endif
#ifdef _WIN32_WCE
#error atlprint.h is not supported on Windows CE
#endif
#ifndef __ATLAPP_H__
#error atlprint.h requires atlapp.h to be included first
#endif
#ifndef __ATLWIN_H__
#error atlprint.h requires atlwin.h to be included first
#endif
///////////////////////////////////////////////////////////////////////////////
// Classes in this file:
//
// CPrinterInfo<t_nInfo>
// CPrinterT<t_bManaged>
// CDevModeT<t_bManaged>
// CPrinterDC
// CPrintJobInfo
// CPrintJob
// CPrintPreview
// CPrintPreviewWindowImpl<T, TBase, TWinTraits>
// CPrintPreviewWindow
// CZoomPrintPreviewWindowImpl<T, TBase, TWinTraits>
// CZoomPrintPreviewWindow
namespace WTL
{
///////////////////////////////////////////////////////////////////////////////
// CPrinterInfo - This class wraps all of the PRINTER_INFO_* structures
// and provided by ::GetPrinter.
template <unsigned int t_nInfo>
class _printer_info
{
public:
typedef void infotype;
};
template <> class _printer_info<1> { public: typedef PRINTER_INFO_1 infotype; };
template <> class _printer_info<2> { public: typedef PRINTER_INFO_2 infotype; };
template <> class _printer_info<3> { public: typedef PRINTER_INFO_3 infotype; };
template <> class _printer_info<4> { public: typedef PRINTER_INFO_4 infotype; };
template <> class _printer_info<5> { public: typedef PRINTER_INFO_5 infotype; };
template <> class _printer_info<6> { public: typedef PRINTER_INFO_6 infotype; };
template <> class _printer_info<7> { public: typedef PRINTER_INFO_7 infotype; };
// these are not in the old (vc6.0) headers
#ifdef _ATL_USE_NEW_PRINTER_INFO
template <> class _printer_info<8> { public: typedef PRINTER_INFO_8 infotype; };
template <> class _printer_info<9> { public: typedef PRINTER_INFO_9 infotype; };
#endif // _ATL_USE_NEW_PRINTER_INFO
template <unsigned int t_nInfo>
class CPrinterInfo
{
public:
// Data members
typename _printer_info<t_nInfo>::infotype* m_pi;
// Constructor/destructor
CPrinterInfo() : m_pi(NULL)
{ }
CPrinterInfo(HANDLE hPrinter) : m_pi(NULL)
{
GetPrinterInfo(hPrinter);
}
~CPrinterInfo()
{
Cleanup();
}
// Operations
bool GetPrinterInfo(HANDLE hPrinter)
{
Cleanup();
return GetPrinterInfoHelper(hPrinter, (BYTE**)&m_pi, t_nInfo);
}
// Implementation
void Cleanup()
{
delete [] (BYTE*)m_pi;
m_pi = NULL;
}
static bool GetPrinterInfoHelper(HANDLE hPrinter, BYTE** pi, int nIndex)
{
ATLASSERT(pi != NULL);
DWORD dw = 0;
BYTE* pb = NULL;
::GetPrinter(hPrinter, nIndex, NULL, 0, &dw);
if (dw > 0)
{
ATLTRY(pb = new BYTE[dw]);
if (pb != NULL)
{
memset(pb, 0, dw);
DWORD dwNew;
if (!::GetPrinter(hPrinter, nIndex, pb, dw, &dwNew))
{
delete [] pb;
pb = NULL;
}
}
}
*pi = pb;
return (pb != NULL);
}
};
///////////////////////////////////////////////////////////////////////////////
// CPrinter - Wrapper class for a HANDLE to a printer
template <bool t_bManaged>
class CPrinterT
{
public:
// Data members
HANDLE m_hPrinter;
// Constructor/destructor
CPrinterT(HANDLE hPrinter = NULL) : m_hPrinter(hPrinter)
{ }
~CPrinterT()
{
ClosePrinter();
}
// Operations
CPrinterT& operator =(HANDLE hPrinter)
{
if (hPrinter != m_hPrinter)
{
ClosePrinter();
m_hPrinter = hPrinter;
}
return *this;
}
bool IsNull() const { return (m_hPrinter == NULL); }
bool OpenPrinter(HANDLE hDevNames, const DEVMODE* pDevMode = NULL)
{
bool b = false;
DEVNAMES* pdn = (DEVNAMES*)::GlobalLock(hDevNames);
if (pdn != NULL)
{
LPTSTR lpszPrinterName = (LPTSTR)pdn + pdn->wDeviceOffset;
b = OpenPrinter(lpszPrinterName, pDevMode);
::GlobalUnlock(hDevNames);
}
return b;
}
bool OpenPrinter(LPCTSTR lpszPrinterName, const DEVMODE* pDevMode = NULL)
{
ClosePrinter();
PRINTER_DEFAULTS pdefs = { NULL, (DEVMODE*)pDevMode, PRINTER_ACCESS_USE };
::OpenPrinter((LPTSTR) lpszPrinterName, &m_hPrinter, (pDevMode == NULL) ? NULL : &pdefs);
return (m_hPrinter != NULL);
}
bool OpenPrinter(LPCTSTR lpszPrinterName, PRINTER_DEFAULTS* pprintdefs)
{
ClosePrinter();
::OpenPrinter((LPTSTR) lpszPrinterName, &m_hPrinter, pprintdefs);
return (m_hPrinter != NULL);
}
bool OpenDefaultPrinter(const DEVMODE* pDevMode = NULL)
{
ClosePrinter();
const int cchBuff = 512;
TCHAR buffer[cchBuff];
buffer[0] = 0;
::GetProfileString(_T("windows"), _T("device"), _T(",,,"), buffer, cchBuff);
int nLen = lstrlen(buffer);
if (nLen != 0)
{
LPTSTR lpsz = buffer;
while (*lpsz)
{
if (*lpsz == _T(','))
{
*lpsz = 0;
break;
}
lpsz = CharNext(lpsz);
}
PRINTER_DEFAULTS pdefs = { NULL, (DEVMODE*)pDevMode, PRINTER_ACCESS_USE };
::OpenPrinter(buffer, &m_hPrinter, (pDevMode == NULL) ? NULL : &pdefs);
}
return m_hPrinter != NULL;
}
void ClosePrinter()
{
if (m_hPrinter != NULL)
{
if (t_bManaged)
::ClosePrinter(m_hPrinter);
m_hPrinter = NULL;
}
}
bool PrinterProperties(HWND hWnd = NULL)
{
if (hWnd == NULL)
hWnd = ::GetActiveWindow();
return !!::PrinterProperties(hWnd, m_hPrinter);
}
HANDLE CopyToHDEVNAMES() const
{
HANDLE h = NULL;
CPrinterInfo<5> pinfon5;
CPrinterInfo<2> pinfon2;
LPTSTR lpszPrinterName = NULL;
// Some printers fail for PRINTER_INFO_5 in some situations
if (pinfon5.GetPrinterInfo(m_hPrinter))
lpszPrinterName = pinfon5.m_pi->pPrinterName;
else if (pinfon2.GetPrinterInfo(m_hPrinter))
lpszPrinterName = pinfon2.m_pi->pPrinterName;
if (lpszPrinterName != NULL)
{
int nLen = sizeof(DEVNAMES) + (lstrlen(lpszPrinterName) + 1) * sizeof(TCHAR);
h = ::GlobalAlloc(GMEM_MOVEABLE, nLen);
BYTE* pv = (BYTE*)::GlobalLock(h);
DEVNAMES* pdev = (DEVNAMES*)pv;
if (pv != NULL)
{
memset(pv, 0, nLen);
pdev->wDeviceOffset = sizeof(DEVNAMES) / sizeof(TCHAR);
pv = pv + sizeof(DEVNAMES); // now points to end
lstrcpy((LPTSTR)pv, lpszPrinterName);
::GlobalUnlock(h);
}
}
return h;
}
HDC CreatePrinterDC(const DEVMODE* pdm = NULL) const
{
CPrinterInfo<5> pinfo5;
CPrinterInfo<2> pinfo2;
HDC hDC = NULL;
LPTSTR lpszPrinterName = NULL;
// Some printers fail for PRINTER_INFO_5 in some situations
if (pinfo5.GetPrinterInfo(m_hPrinter))
lpszPrinterName = pinfo5.m_pi->pPrinterName;
else if (pinfo2.GetPrinterInfo(m_hPrinter))
lpszPrinterName = pinfo2.m_pi->pPrinterName;
if (lpszPrinterName != NULL)
hDC = ::CreateDC(NULL, lpszPrinterName, NULL, pdm);
return hDC;
}
HDC CreatePrinterIC(const DEVMODE* pdm = NULL) const
{
CPrinterInfo<5> pinfo5;
CPrinterInfo<2> pinfo2;
HDC hDC = NULL;
LPTSTR lpszPrinterName = NULL;
// Some printers fail for PRINTER_INFO_5 in some situations
if (pinfo5.GetPrinterInfo(m_hPrinter))
lpszPrinterName = pinfo5.m_pi->pPrinterName;
else if (pinfo2.GetPrinterInfo(m_hPrinter))
lpszPrinterName = pinfo2.m_pi->pPrinterName;
if (lpszPrinterName != NULL)
hDC = ::CreateIC(NULL, lpszPrinterName, NULL, pdm);
return hDC;
}
void Attach(HANDLE hPrinter)
{
ClosePrinter();
m_hPrinter = hPrinter;
}
HANDLE Detach()
{
HANDLE hPrinter = m_hPrinter;
m_hPrinter = NULL;
return hPrinter;
}
operator HANDLE() const { return m_hPrinter; }
};
typedef CPrinterT<false> CPrinterHandle;
typedef CPrinterT<true> CPrinter;
///////////////////////////////////////////////////////////////////////////////
// CDevMode - Wrapper class for DEVMODE
template <bool t_bManaged>
class CDevModeT
{
public:
// Data members
HANDLE m_hDevMode;
DEVMODE* m_pDevMode;
// Constructor/destructor
CDevModeT(HANDLE hDevMode = NULL) : m_hDevMode(hDevMode)
{
m_pDevMode = (m_hDevMode != NULL) ? (DEVMODE*)::GlobalLock(m_hDevMode) : NULL;
}
~CDevModeT()
{
Cleanup();
}
// Operations
CDevModeT<t_bManaged>& operator =(HANDLE hDevMode)
{
Attach(hDevMode);
return *this;
}
void Attach(HANDLE hDevModeNew)
{
Cleanup();
m_hDevMode = hDevModeNew;
m_pDevMode = (m_hDevMode != NULL) ? (DEVMODE*)::GlobalLock(m_hDevMode) : NULL;
}
HANDLE Detach()
{
if (m_hDevMode != NULL)
::GlobalUnlock(m_hDevMode);
HANDLE hDevMode = m_hDevMode;
m_hDevMode = NULL;
return hDevMode;
}
bool IsNull() const { return (m_hDevMode == NULL); }
bool CopyFromPrinter(HANDLE hPrinter)
{
CPrinterInfo<2> pinfo;
bool b = pinfo.GetPrinterInfo(hPrinter);
if (b)
b = CopyFromDEVMODE(pinfo.m_pi->pDevMode);
return b;
}
bool CopyFromDEVMODE(const DEVMODE* pdm)
{
if (pdm == NULL)
return false;
int nSize = pdm->dmSize + pdm->dmDriverExtra;
HANDLE h = ::GlobalAlloc(GMEM_MOVEABLE, nSize);
if (h != NULL)
{
void* p = ::GlobalLock(h);
memcpy(p, pdm, nSize);
::GlobalUnlock(h);
}
Attach(h);
return (h != NULL);
}
bool CopyFromHDEVMODE(HANDLE hdm)
{
bool b = false;
if (hdm != NULL)
{
DEVMODE* pdm = (DEVMODE*)::GlobalLock(hdm);
b = CopyFromDEVMODE(pdm);
::GlobalUnlock(hdm);
}
return b;
}
HANDLE CopyToHDEVMODE()
{
if ((m_hDevMode == NULL) || (m_pDevMode == NULL))
return NULL;
int nSize = m_pDevMode->dmSize + m_pDevMode->dmDriverExtra;
HANDLE h = ::GlobalAlloc(GMEM_MOVEABLE, nSize);
if (h != NULL)
{
void* p = ::GlobalLock(h);
memcpy(p, m_pDevMode, nSize);
::GlobalUnlock(h);
}
return h;
}
// If this devmode was for another printer, this will create a new devmode
// based on the existing devmode, but retargeted at the new printer
bool UpdateForNewPrinter(HANDLE hPrinter)
{
LONG nLen = ::DocumentProperties(NULL, hPrinter, NULL, NULL, NULL, 0);
DEVMODE* pdm = (DEVMODE*)_alloca(nLen);
memset(pdm, 0, nLen);
LONG l = ::DocumentProperties(NULL, hPrinter, NULL, pdm, m_pDevMode, DM_IN_BUFFER | DM_OUT_BUFFER);
bool b = false;
if (l == IDOK)
b = CopyFromDEVMODE(pdm);
return b;
}
bool DocumentProperties(HANDLE hPrinter, HWND hWnd = NULL)
{
CPrinterInfo<1> pi;
pi.GetPrinterInfo(hPrinter);
if (hWnd == NULL)
hWnd = ::GetActiveWindow();
LONG nLen = ::DocumentProperties(hWnd, hPrinter, pi.m_pi->pName, NULL, NULL, 0);
DEVMODE* pdm = (DEVMODE*)_alloca(nLen);
memset(pdm, 0, nLen);
LONG l = ::DocumentProperties(hWnd, hPrinter, pi.m_pi->pName, pdm, m_pDevMode, DM_IN_BUFFER | DM_OUT_BUFFER | DM_PROMPT);
bool b = false;
if (l == IDOK)
b = CopyFromDEVMODE(pdm);
return b;
}
operator HANDLE() const { return m_hDevMode; }
operator DEVMODE*() const { return m_pDevMode; }
// Implementation
void Cleanup()
{
if (m_hDevMode != NULL)
{
::GlobalUnlock(m_hDevMode);
if(t_bManaged)
::GlobalFree(m_hDevMode);
m_hDevMode = NULL;
}
}
};
typedef CDevModeT<false> CDevModeHandle;
typedef CDevModeT<true> CDevMode;
///////////////////////////////////////////////////////////////////////////////
// CPrinterDC
class CPrinterDC : public CDC
{
public:
// Constructors/destructor
CPrinterDC()
{
CPrinter printer;
printer.OpenDefaultPrinter();
Attach(printer.CreatePrinterDC());
ATLASSERT(m_hDC != NULL);
}
CPrinterDC(HANDLE hPrinter, const DEVMODE* pdm = NULL)
{
CPrinterHandle p;
p.Attach(hPrinter);
Attach(p.CreatePrinterDC(pdm));
ATLASSERT(m_hDC != NULL);
}
~CPrinterDC()
{
DeleteDC();
}
};
///////////////////////////////////////////////////////////////////////////////
// CPrintJob - Wraps a set of tasks for a specific printer (StartDoc/EndDoc)
// Handles aborting, background printing
// Defines callbacks used by CPrintJob (not a COM interface)
class ATL_NO_VTABLE IPrintJobInfo
{
public:
virtual void BeginPrintJob(HDC hDC) = 0; // allocate handles needed, etc.
virtual void EndPrintJob(HDC hDC, bool bAborted) = 0; // free handles, etc.
virtual void PrePrintPage(UINT nPage, HDC hDC) = 0;
virtual bool PrintPage(UINT nPage, HDC hDC) = 0;
virtual void PostPrintPage(UINT nPage, HDC hDC) = 0;
// If you want per page devmodes, return the DEVMODE* to use for nPage.
// You can optimize by only returning a new DEVMODE* when it is different
// from the one for nLastPage, otherwise return NULL.
// When nLastPage==0, the current DEVMODE* will be the default passed to
// StartPrintJob.
// Note: During print preview, nLastPage will always be "0".
virtual DEVMODE* GetNewDevModeForPage(UINT nLastPage, UINT nPage) = 0;
virtual bool IsValidPage(UINT nPage) = 0;
};
// Provides a default implementatin for IPrintJobInfo
// Typically, MI'd into a document or view class
class ATL_NO_VTABLE CPrintJobInfo : public IPrintJobInfo
{
public:
virtual void BeginPrintJob(HDC /*hDC*/) // allocate handles needed, etc
{
}
virtual void EndPrintJob(HDC /*hDC*/, bool /*bAborted*/) // free handles, etc
{
}
virtual void PrePrintPage(UINT /*nPage*/, HDC hDC)
{
m_nPJState = ::SaveDC(hDC);
}
virtual bool PrintPage(UINT /*nPage*/, HDC /*hDC*/) = 0;
virtual void PostPrintPage(UINT /*nPage*/, HDC hDC)
{
RestoreDC(hDC, m_nPJState);
}
virtual DEVMODE* GetNewDevModeForPage(UINT /*nLastPage*/, UINT /*nPage*/)
{
return NULL;
}
virtual bool IsValidPage(UINT /*nPage*/)
{
return true;
}
// Implementation - data
int m_nPJState;
};
class CPrintJob
{
public:
// Data members
CPrinterHandle m_printer;
IPrintJobInfo* m_pInfo;
DEVMODE* m_pDefDevMode;
DOCINFO m_docinfo;
int m_nJobID;
bool m_bCancel;
bool m_bComplete;
unsigned long m_nStartPage;
unsigned long m_nEndPage;
// Constructor/destructor
CPrintJob() : m_nJobID(0), m_bCancel(false), m_bComplete(true)
{ }
~CPrintJob()
{
ATLASSERT(IsJobComplete()); // premature destruction?
}
// Operations
bool IsJobComplete() const
{
return m_bComplete;
}
bool StartPrintJob(bool bBackground, HANDLE hPrinter, DEVMODE* pDefaultDevMode,
IPrintJobInfo* pInfo, LPCTSTR lpszDocName,
unsigned long nStartPage, unsigned long nEndPage,
bool bPrintToFile = false, LPCTSTR lpstrOutputFile = NULL)
{
ATLASSERT(m_bComplete); // previous job not done yet?
if (pInfo == NULL)
return false;
memset(&m_docinfo, 0, sizeof(m_docinfo));
m_docinfo.cbSize = sizeof(m_docinfo);
m_docinfo.lpszDocName = lpszDocName;
m_pInfo = pInfo;
m_nStartPage = nStartPage;
m_nEndPage = nEndPage;
m_printer.Attach(hPrinter);
m_pDefDevMode = pDefaultDevMode;
m_bComplete = false;
if(bPrintToFile)
m_docinfo.lpszOutput = (lpstrOutputFile != NULL) ? lpstrOutputFile : _T("FILE:");
if (!bBackground)
{
m_bComplete = true;
return StartHelper();
}
// Create a thread and return
DWORD dwThreadID = 0;
HANDLE hThread = ::CreateThread(NULL, 0, StartProc, (void*)this, 0, &dwThreadID);
::CloseHandle(hThread);
return (hThread != NULL);
}
// Implementation
static DWORD WINAPI StartProc(void* p)
{
CPrintJob* pThis = (CPrintJob*)p;
pThis->StartHelper();
pThis->m_bComplete = true;
return 0;
}
bool StartHelper()
{
CDC dcPrinter;
dcPrinter.Attach(m_printer.CreatePrinterDC(m_pDefDevMode));
if (dcPrinter.IsNull())
return false;
m_nJobID = ::StartDoc(dcPrinter, &m_docinfo);
if (m_nJobID <= 0)
return false;
m_pInfo->BeginPrintJob(dcPrinter);
// print all the pages now
unsigned long nLastPage = 0;
for (unsigned long nPage = m_nStartPage; nPage <= m_nEndPage; nPage++)
{
if (!m_pInfo->IsValidPage(nPage))
break;
DEVMODE* pdm = m_pInfo->GetNewDevModeForPage(nLastPage, nPage);
if (pdm != NULL)
dcPrinter.ResetDC(pdm);
dcPrinter.StartPage();
m_pInfo->PrePrintPage(nPage, dcPrinter);
if (!m_pInfo->PrintPage(nPage, dcPrinter))
m_bCancel = true;
m_pInfo->PostPrintPage(nPage, dcPrinter);
dcPrinter.EndPage();
if (m_bCancel)
break;
nLastPage = nPage;
}
m_pInfo->EndPrintJob(dcPrinter, m_bCancel);
if (m_bCancel)
::AbortDoc(dcPrinter);
else
::EndDoc(dcPrinter);
m_nJobID = 0;
return true;
}
// Cancels a print job. Can be called asynchronously.
void CancelPrintJob()
{
m_bCancel = true;
}
};
///////////////////////////////////////////////////////////////////////////////
// CPrintPreview - Adds print preview support to an existing window
class CPrintPreview
{
public:
// Data members
IPrintJobInfo* m_pInfo;
CPrinterHandle m_printer;
CEnhMetaFile m_meta;
DEVMODE* m_pDefDevMode;
DEVMODE* m_pCurDevMode;
SIZE m_sizeCurPhysOffset;
// Constructor
CPrintPreview() : m_pInfo(NULL), m_pDefDevMode(NULL), m_pCurDevMode(NULL)
{
m_sizeCurPhysOffset.cx = 0;
m_sizeCurPhysOffset.cy = 0;
}
// Operations
void SetPrintPreviewInfo(HANDLE hPrinter, DEVMODE* pDefaultDevMode, IPrintJobInfo* pji)
{
m_printer.Attach(hPrinter);
m_pDefDevMode = pDefaultDevMode;
m_pInfo = pji;
m_nCurPage = 0;
m_pCurDevMode = NULL;
}
void SetEnhMetaFile(HENHMETAFILE hEMF)
{
m_meta = hEMF;
}
void SetPage(int nPage)
{
if (!m_pInfo->IsValidPage(nPage))
return;
m_nCurPage = nPage;
m_pCurDevMode = m_pInfo->GetNewDevModeForPage(0, nPage);
if (m_pCurDevMode == NULL)
m_pCurDevMode = m_pDefDevMode;
CDC dcPrinter = m_printer.CreatePrinterDC(m_pCurDevMode);
int iWidth = dcPrinter.GetDeviceCaps(PHYSICALWIDTH);
int iHeight = dcPrinter.GetDeviceCaps(PHYSICALHEIGHT);
int nLogx = dcPrinter.GetDeviceCaps(LOGPIXELSX);
int nLogy = dcPrinter.GetDeviceCaps(LOGPIXELSY);
RECT rcMM = { 0, 0, ::MulDiv(iWidth, 2540, nLogx), ::MulDiv(iHeight, 2540, nLogy) };
m_sizeCurPhysOffset.cx = dcPrinter.GetDeviceCaps(PHYSICALOFFSETX);
m_sizeCurPhysOffset.cy = dcPrinter.GetDeviceCaps(PHYSICALOFFSETY);
CEnhMetaFileDC dcMeta(dcPrinter, &rcMM);
m_pInfo->PrePrintPage(nPage, dcMeta);
m_pInfo->PrintPage(nPage, dcMeta);
m_pInfo->PostPrintPage(nPage, dcMeta);
m_meta.Attach(dcMeta.Close());
}
void GetPageRect(RECT& rc, LPRECT prc)
{
int x1 = rc.right-rc.left;
int y1 = rc.bottom - rc.top;
if ((x1 < 0) || (y1 < 0))
return;
CEnhMetaFileInfo emfinfo(m_meta);
ENHMETAHEADER* pmh = emfinfo.GetEnhMetaFileHeader();
// Compute whether we are OK vertically or horizontally
int x2 = pmh->szlDevice.cx;
int y2 = pmh->szlDevice.cy;
int y1p = MulDiv(x1, y2, x2);
int x1p = MulDiv(y1, x2, y2);
ATLASSERT((x1p <= x1) || (y1p <= y1));
if (x1p <= x1)
{
prc->left = rc.left + (x1 - x1p) / 2;
prc->right = prc->left + x1p;
prc->top = rc.top;
prc->bottom = rc.bottom;
}
else
{
prc->left = rc.left;
prc->right = rc.right;
prc->top = rc.top + (y1 - y1p) / 2;
prc->bottom = prc->top + y1p;
}
}
// Painting helpers
void DoPaint(CDCHandle dc)
{
// this one is not used
}
void DoPaint(CDCHandle dc, RECT& rc)
{
CEnhMetaFileInfo emfinfo(m_meta);
ENHMETAHEADER* pmh = emfinfo.GetEnhMetaFileHeader();
int nOffsetX = MulDiv(m_sizeCurPhysOffset.cx, rc.right-rc.left, pmh->szlDevice.cx);
int nOffsetY = MulDiv(m_sizeCurPhysOffset.cy, rc.bottom-rc.top, pmh->szlDevice.cy);
dc.OffsetWindowOrg(-nOffsetX, -nOffsetY);
dc.PlayMetaFile(m_meta, &rc);
}
// Implementation - data
int m_nCurPage;
};
///////////////////////////////////////////////////////////////////////////////
// CPrintPreviewWindow - Implements a print preview window
template <class T, class TBase = ATL::CWindow, class TWinTraits = ATL::CControlWinTraits>
class ATL_NO_VTABLE CPrintPreviewWindowImpl : public ATL::CWindowImpl<T, TBase, TWinTraits>, public CPrintPreview
{
public:
DECLARE_WND_CLASS_EX(NULL, CS_VREDRAW | CS_HREDRAW, -1)
enum { m_cxOffset = 10, m_cyOffset = 10 };
// Constructor
CPrintPreviewWindowImpl() : m_nMaxPage(0), m_nMinPage(0)
{ }
// Operations
void SetPrintPreviewInfo(HANDLE hPrinter, DEVMODE* pDefaultDevMode,
IPrintJobInfo* pji, int nMinPage, int nMaxPage)
{
CPrintPreview::SetPrintPreviewInfo(hPrinter, pDefaultDevMode, pji);
m_nMinPage = nMinPage;
m_nMaxPage = nMaxPage;
}
bool NextPage()
{
if (m_nCurPage == m_nMaxPage)
return false;
SetPage(m_nCurPage + 1);
Invalidate();
return true;
}
bool PrevPage()
{
if (m_nCurPage == m_nMinPage)
return false;
if (m_nCurPage == 0)
return false;
SetPage(m_nCurPage - 1);
Invalidate();
return true;
}
// Message map and handlers
BEGIN_MSG_MAP(CPrintPreviewWindowImpl)
MESSAGE_HANDLER(WM_ERASEBKGND, OnEraseBkgnd)
MESSAGE_HANDLER(WM_PAINT, OnPaint)
MESSAGE_HANDLER(WM_PRINTCLIENT, OnPaint)
END_MSG_MAP()
LRESULT OnEraseBkgnd(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
return 1; // no need for the background
}
LRESULT OnPaint(UINT /*uMsg*/, WPARAM wParam, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
RECT rc = { 0 };
if(wParam != NULL)
{
pT->DoPrePaint((HDC)wParam, rc);
pT->DoPaint((HDC)wParam, rc);
}
else
{
CPaintDC dc(m_hWnd);
pT->DoPrePaint(dc.m_hDC, rc);
pT->DoPaint(dc.m_hDC, rc);
}
return 0;
}
// Painting helper
void DoPrePaint(CDCHandle dc, RECT& rc)
{
RECT rcClient = { 0 };
GetClientRect(&rcClient);
RECT rcArea = rcClient;
T* pT = static_cast<T*>(this);
pT; // avoid level 4 warning
::InflateRect(&rcArea, -pT->m_cxOffset, -pT->m_cyOffset);
if (rcArea.left > rcArea.right)
rcArea.right = rcArea.left;
if (rcArea.top > rcArea.bottom)
rcArea.bottom = rcArea.top;
GetPageRect(rcArea, &rc);
CRgn rgn1, rgn2;
rgn1.CreateRectRgnIndirect(&rc);
rgn2.CreateRectRgnIndirect(&rcClient);
rgn2.CombineRgn(rgn1, RGN_DIFF);
dc.SelectClipRgn(rgn2);
dc.FillRect(&rcClient, COLOR_BTNSHADOW);
dc.SelectClipRgn(NULL);
dc.FillRect(&rc, (HBRUSH)::GetStockObject(WHITE_BRUSH));
}
// Implementation - data
int m_nMinPage;
int m_nMaxPage;
};
class CPrintPreviewWindow : public CPrintPreviewWindowImpl<CPrintPreviewWindow>
{
public:
DECLARE_WND_CLASS_EX(_T("WTL_PrintPreview"), CS_VREDRAW | CS_HREDRAW, -1)
};
///////////////////////////////////////////////////////////////////////////////
// CZoomPrintPreviewWindowImpl - Implements print preview window with zooming
#ifdef __ATLSCRL_H__
template <class T, class TBase = ATL::CWindow, class TWinTraits = ATL::CControlWinTraits>
class ATL_NO_VTABLE CZoomPrintPreviewWindowImpl : public CPrintPreviewWindowImpl< T, TBase, TWinTraits >, public CZoomScrollImpl< T >
{
public:
bool m_bSized;
CZoomPrintPreviewWindowImpl()
{
SetScrollExtendedStyle(SCRL_DISABLENOSCROLL);
InitZoom();
}
// should be called to reset data members before recreating window
void InitZoom()
{
m_bSized = false;
m_nZoomMode = ZOOMMODE_OFF;
m_fZoomScaleMin = 1.0;
m_fZoomScale = 1.0;
}
BEGIN_MSG_MAP(CZoomPrintPreviewWindowImpl)
MESSAGE_HANDLER(WM_SETCURSOR, CZoomScrollImpl< T >::OnSetCursor)
MESSAGE_HANDLER(WM_VSCROLL, CScrollImpl< T >::OnVScroll)
MESSAGE_HANDLER(WM_HSCROLL, CScrollImpl< T >::OnHScroll)
MESSAGE_HANDLER(WM_MOUSEWHEEL, CScrollImpl< T >::OnMouseWheel)
#if !((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
MESSAGE_HANDLER(m_uMsgMouseWheel, CScrollImpl< T >::OnMouseWheel)
#endif // !((_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400))
MESSAGE_HANDLER(WM_SETTINGCHANGE, CScrollImpl< T >::OnSettingChange)
MESSAGE_HANDLER(WM_LBUTTONDOWN, CZoomScrollImpl< T >::OnLButtonDown)
MESSAGE_HANDLER(WM_MOUSEMOVE, CZoomScrollImpl< T >::OnMouseMove)
MESSAGE_HANDLER(WM_LBUTTONUP, CZoomScrollImpl< T >::OnLButtonUp)
MESSAGE_HANDLER(WM_CAPTURECHANGED, CZoomScrollImpl< T >::OnCaptureChanged)
MESSAGE_HANDLER(WM_SIZE, OnSize)
MESSAGE_HANDLER(WM_ERASEBKGND, OnEraseBkgnd)
MESSAGE_HANDLER(WM_PAINT, OnPaint)
MESSAGE_HANDLER(WM_PRINTCLIENT, OnPaint)
ALT_MSG_MAP(1)
COMMAND_ID_HANDLER(ID_SCROLL_UP, CScrollImpl< T >::OnScrollUp)
COMMAND_ID_HANDLER(ID_SCROLL_DOWN, CScrollImpl< T >::OnScrollDown)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_UP, CScrollImpl< T >::OnScrollPageUp)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_DOWN, CScrollImpl< T >::OnScrollPageDown)
COMMAND_ID_HANDLER(ID_SCROLL_TOP, CScrollImpl< T >::OnScrollTop)
COMMAND_ID_HANDLER(ID_SCROLL_BOTTOM, CScrollImpl< T >::OnScrollBottom)
COMMAND_ID_HANDLER(ID_SCROLL_LEFT, CScrollImpl< T >::OnScrollLeft)
COMMAND_ID_HANDLER(ID_SCROLL_RIGHT, CScrollImpl< T >::OnScrollRight)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_LEFT, CScrollImpl< T >::OnScrollPageLeft)
COMMAND_ID_HANDLER(ID_SCROLL_PAGE_RIGHT, CScrollImpl< T >::OnScrollPageRight)
COMMAND_ID_HANDLER(ID_SCROLL_ALL_LEFT, CScrollImpl< T >::OnScrollAllLeft)
COMMAND_ID_HANDLER(ID_SCROLL_ALL_RIGHT, CScrollImpl< T >::OnScrollAllRight)
END_MSG_MAP()
LRESULT OnSize(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
SIZE sizeClient = {GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)};
POINT ptOffset = m_ptOffset;
SIZE sizeAll = m_sizeAll;
SetScrollSize(sizeClient);
if(sizeAll.cx > 0)
ptOffset.x = ::MulDiv(ptOffset.x, m_sizeAll.cx, sizeAll.cx);
if(sizeAll.cy > 0)
ptOffset.y = ::MulDiv(ptOffset.y, m_sizeAll.cy, sizeAll.cy);
SetScrollOffset(ptOffset);
CScrollImpl< T >::OnSize(uMsg, wParam, lParam, bHandled);
if(!m_bSized)
{
m_bSized = true;
T* pT = static_cast<T*>(this);
pT->ShowScrollBar(SB_HORZ, TRUE);
pT->ShowScrollBar(SB_VERT, TRUE);
}
return 0;
}
LRESULT OnEraseBkgnd(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
return 1;
}
LRESULT OnPaint(UINT /*uMsg*/, WPARAM wParam, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
T* pT = static_cast<T*>(this);
RECT rc = { 0 };
if(wParam != NULL)
{
pT->DoPrePaint((HDC)wParam, rc);
pT->DoPaint((HDC)wParam, rc);
}
else
{
CPaintDC dc(pT->m_hWnd);
pT->DoPrePaint(dc.m_hDC, rc);
pT->DoPaint(dc.m_hDC, rc);
}
return 0;
}
// Painting helpers
void DoPaint(CDCHandle dc)
{
// this one is not used
}
void DoPrePaint(CDCHandle dc, RECT& rc)
{
PrepareDC(dc.m_hDC);
RECT rcClient;
GetClientRect(&rcClient);
RECT rcArea = rcClient;
T* pT = static_cast<T*>(this);
pT; // avoid level 4 warning
::InflateRect(&rcArea, -pT->m_cxOffset, -pT->m_cyOffset);
if (rcArea.left > rcArea.right)
rcArea.right = rcArea.left;
if (rcArea.top > rcArea.bottom)
rcArea.bottom = rcArea.top;
GetPageRect(rcArea, &rc);
HBRUSH hbrOld = dc.SelectBrush(::GetSysColorBrush(COLOR_BTNSHADOW));
dc.PatBlt(rcClient.left, rcClient.top, rc.left - rcClient.left, rcClient.bottom - rcClient.top, PATCOPY);
dc.PatBlt(rc.left, rcClient.top, rc.right - rc.left, rc.top - rcClient.top, PATCOPY);
dc.PatBlt(rc.right, rcClient.top, rcClient.right - rc.right, rcClient.bottom - rcClient.top, PATCOPY);
dc.PatBlt(rc.left, rc.bottom, rc.right - rc.left, rcClient.bottom - rc.bottom, PATCOPY);
dc.SelectBrush((HBRUSH)::GetStockObject(WHITE_BRUSH));
dc.PatBlt(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, PATCOPY);
dc.SelectBrush(::GetSysColorBrush(COLOR_3DDKSHADOW));
dc.PatBlt(rc.right, rc.top + 4, 4, rc.bottom - rc.top, PATCOPY);
dc.PatBlt(rc.left + 4, rc.bottom, rc.right - rc.left, 4, PATCOPY);
dc.SelectBrush(hbrOld);
}
void DoPaint(CDCHandle dc, RECT& rc)
{
CEnhMetaFileInfo emfinfo(m_meta);
ENHMETAHEADER* pmh = emfinfo.GetEnhMetaFileHeader();
int nOffsetX = MulDiv(m_sizeCurPhysOffset.cx, rc.right-rc.left, pmh->szlDevice.cx);
int nOffsetY = MulDiv(m_sizeCurPhysOffset.cy, rc.bottom-rc.top, pmh->szlDevice.cy);
dc.OffsetWindowOrg(-nOffsetX, -nOffsetY);
dc.PlayMetaFile(m_meta, &rc);
}
};
class CZoomPrintPreviewWindow : public CZoomPrintPreviewWindowImpl<CZoomPrintPreviewWindow>
{
public:
DECLARE_WND_CLASS_EX(_T("WTL_ZoomPrintPreview"), CS_VREDRAW | CS_HREDRAW, -1)
};
#endif // __ATLSCRL_H__
}; // namespace WTL
#endif // __ATLPRINT_H__
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