print.cpp

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/*
 * PRINT.CPP
 * Patron Chapter 22
 *
 * Implementation of printing functions for both CPatronDoc
 * and CPages classes.  These functions are here to keep clutter
 * down in document.cpp and pages.cpp.
 *
 * Copyright (c)1993-1995 Microsoft Corporation, All Rights Reserved
 *
 * Kraig Brockschmidt, Microsoft
 * Internet  :  [e-mail]
 * Compuserve:  >INTERNET:[e-mail]
 */

#include "patron.h"

static HWND g_hDlgPrint=NULL;
static BOOL g_fCancelPrint=FALSE;


/*
 * CPatronDoc::Print
 *
 * Purpose:
 *  Prints the current document.
 *
 * Parameters:
 *  hWndFrame       HWND of the frame to use for dialog parents.
 *
 * Return Value:
 *  BOOL            TRUE if printing happened, FALSE if it didn't
 *                  start or didn't complete.
 */

BOOL CPatronDoc::Print(HWND hWndFrame)
    {
    PRINTDLG        pd;
    BOOL            fSuccess;

    memset(&pd, 0, sizeof(PRINTDLG));
    pd.lStructSize=sizeof(PRINTDLG);
    pd.hwndOwner  =hWndFrame;
    pd.nCopies    =1;
    pd.nFromPage  =(USHORT)-1;
    pd.nToPage    =(USHORT)-1;
    pd.nMinPage   =1;
    pd.nMaxPage   =m_pPG->NumPagesGet();

    pd.lpfnPrintHook=PrintDlgHook;

    //Get the current document printer settings
    pd.hDevMode=m_pPG->DevModeGet();

    pd.Flags=PD_RETURNDC | PD_ALLPAGES | PD_COLLATE
        | PD_HIDEPRINTTOFILE | PD_NOSELECTION | PD_ENABLEPRINTHOOK;

    if (!PrintDlg(&pd))
        return FALSE;

    if (NULL!=pd.hDevMode)
        GlobalFree(pd.hDevMode);

    if (NULL!=pd.hDevNames)
        GlobalFree(pd.hDevNames);

    //Go do the actual printing.
    fSuccess=m_pPG->Print(pd.hDC, PSZ(IDS_DOCUMENTNAME), pd.Flags
        , pd.nFromPage, pd.nToPage, pd.nCopies);

    if (!fSuccess)
        {
        MessageBox(m_hWnd, PSZ(IDS_PRINTERROR)
            , PSZ(IDS_DOCUMENTCAPTION), MB_OK);
        }

    return fSuccess;
    }






/*
 * CPatronDoc::PrinterSetup
 *
 * Purpose:
 *  Selects a new printer and options for this document.
 *
 * Parameters:
 *  hWndFrame       HWND of the frame to use for dialog parents.
 *  fDefault        BOOL to avoid any dialog and just use the
 *                  default.
 *
 * Return Value:
 *  UINT            Undefined
 */

UINT CPatronDoc::PrinterSetup(HWND hWndFrame, BOOL fDefault)
    {
    PRINTDLG        pd;

    //Attempt to get printer metrics for the default printer.
    memset(&pd, 0, sizeof(PRINTDLG));
    pd.lStructSize=sizeof(PRINTDLG);

    if (fDefault)
        pd.Flags=PD_RETURNDEFAULT;
    else
        {
        pd.hwndOwner=hWndFrame;
        pd.Flags=PD_PRINTSETUP;

        //Get the current document printer settings
        pd.hDevMode=m_pPG->DevModeGet();
        }

    if (!PrintDlg(&pd))
        return FALSE;

    if (!m_pPG->DevModeSet(pd.hDevMode, pd.hDevNames))
        {
        GlobalFree(pd.hDevNames);
        GlobalFree(pd.hDevMode);
        return FALSE;
        }

    FDirtySet(TRUE);
    return 1;
    }



/*
 * PrintDlgHook
 *
 * Purpose:
 *  Callback hook for the Print Dialog so we can hide the Setup
 *  button.  Patron only allows Setup before anything exists on
 *  the page, and is not written to handle setup at Print time.
 */

UINT CALLBACK PrintDlgHook(HWND hDlg, UINT iMsg, WPARAM wParam
    , LPARAM lParam)
    {
    if (WM_INITDIALOG==iMsg)
        {
        HWND        hWnd;

        hWnd=GetDlgItem(hDlg, psh1);
        ShowWindow(hWnd, SW_HIDE);
        return TRUE;
        }

    return FALSE;
    }




/*
 * CPatronDoc::FQueryPrinterSetup
 *
 * Purpose:
 *  Returns whether or not the Printer Setup menu item can be
 *  enabled.  Once you create a tenant in any page, Printer Setup
 *  is voided simply to keep this sample simple, that is, we don't
 *  have to worry about reorganizing potentially large amounts
 *  of layout after we start plopping down objects.
 *
 * Parameters:
 *  None
 *
 * Return Value:
 *  BOOL            TRUE to enable the menu, FALSE otherwise.
 */

BOOL CPatronDoc::FQueryPrinterSetup(void)
    {
    return m_fPrintSetup;
    }




/*
 * CPages::DevModeSet
 *
 * Purpose:
 *  Provides the Pages with the current printer information.
 *
 * Parameters:
 *  hDevMode        HGLOBAL to the memory containing the DEVMODE.
 *                  This function assumes responsibility for this
 *                  handle.
 *  hDevNames       HGLOBAL providing the driver name and device
 *                  name from which we can create a DC for
 *                  information.
 *
 * Return Value:
 *  BOOL            TRUE if we could accept this configuration,
 *                  FALSE otherwise.  If we return TRUE we also
 *                  delete the old memory we hold.
 */

BOOL CPages::DevModeSet(HGLOBAL hDevMode, HGLOBAL hDevNames)
    {
    LPDEVNAMES      pdn;
    LPTSTR          psz;
    HGLOBAL         hMem;
    PDEVICECONFIG   pdc;
    LPDEVMODE       pdm;
    LPSTREAM        pIStream;
    HRESULT         hr;
    ULONG           cbDevMode, cbWrite;
    BOOL            fRet=FALSE;

    if (NULL==hDevMode || NULL==hDevNames)
        return FALSE;

    hr=m_pIStorage->OpenStream(SZSTREAMDEVICECONFIG, 0, STGM_DIRECT
        | STGM_WRITE | STGM_SHARE_EXCLUSIVE, 0, &pIStream);

    if (FAILED(hr))
        return FALSE;

    /*
     * DEVMODE is variable length--total length in hDevMode, so the
     * amount to write is that plus string space.  We subtract
     * sizeof(DEVMODE) as that is already included from GlobalSize.
     */
    cbDevMode=GlobalSize(hDevMode);
    cbWrite=cbDevMode+sizeof(DEVICECONFIG)-sizeof(DEVMODE);

    hMem=GlobalAlloc(GHND, cbWrite);

    if (NULL==hMem)
        {
        pIStream->Release();
        return FALSE;
        }

    pdc=(PDEVICECONFIG)GlobalLock(hMem);    //This always works
    pdm=(LPDEVMODE)GlobalLock(hDevMode);    //This might not

    if (NULL!=pdm)
        {
        pdc->cb=cbWrite;
        pdc->cbDevMode=cbDevMode;
        memcpy(&pdc->dm, pdm, (int)cbDevMode);
        GlobalUnlock(hDevMode);

        psz=(LPTSTR)GlobalLock(hDevNames);

        if (NULL!=psz)
            {
            pdn=(LPDEVNAMES)psz;
            lstrcpy(pdc->szDriver, psz+pdn->wDriverOffset);
            lstrcpy(pdc->szDevice, psz+pdn->wDeviceOffset);
            lstrcpy(pdc->szPort,   psz+pdn->wOutputOffset);

            pIStream->Write(pdc, cbWrite, &cbWrite);
            GlobalUnlock(hDevNames);
            fRet=TRUE;
            }
        }

    GlobalUnlock(hMem);
    GlobalFree(hMem);

    pIStream->Release();

    if (!fRet)
        return FALSE;

    GlobalFree(hDevNames);
    GlobalFree(hDevMode);

    return ConfigureForDevice();
    }




/*
 * CPages::DevModeGet
 *
 * Purpose:
 *  Retrieves a copy of the current DEVMODE structure for this
 *  Pages window.  The caller is responsible for this memory.
 *
 * Parameters:
 *  None
 *
 * Return Value:
 *  HGLOBAL         Handle to the memory containing the DEVMODE
 *                  structure.
 */

HGLOBAL CPages::DevModeGet(void)
    {
    HGLOBAL         hMem;
    LPVOID          pv;
    ULONG           cbDevMode, cbRead;
    LARGE_INTEGER   li;
    LPSTREAM        pIStream;
    HRESULT         hr;

    hr=m_pIStorage->OpenStream(SZSTREAMDEVICECONFIG, 0, STGM_DIRECT
        | STGM_READ | STGM_SHARE_EXCLUSIVE, 0, &pIStream);

    if (FAILED(hr))
        return FALSE;

    //Read how much to allocate for the DEVMODE structure
    LISet32(li, CBSEEKOFFSETCBDEVMODE);
    pIStream->Seek(li, STREAM_SEEK_SET, NULL);
    pIStream->Read(&cbDevMode, sizeof(ULONG), &cbRead);

    hMem=GlobalAlloc(GHND, cbDevMode);

    if (NULL!=hMem)
        {
        pv=(LPVOID)GlobalLock(hMem);
        pIStream->Read(pv, cbDevMode, &cbRead);
        GlobalUnlock(hMem);
        }

    pIStream->Release();
    return hMem;
    }







/*
 * CPages::DevReadConfig
 *
 * Purpose:
 *  Public function to read the current device configuration and
 *  optionally return an information context for it.
 *
 *
 * Parameters:
 *  ppcd            PCOMBINEDEVICE * in which to return a pointer
 *                  to an allocated structure that has all the
 *                  device information we want.  Ignored if NULL.
 *                  This is allocated with the task allocator.
 *  phDC            HDC * in which to return the information
 *                  context.  If NULL, no IC is created.  Caller
 *                  becomes responsible for the returned IC.
 *
 * Return Value:
 *  BOOL            TRUE if successful, FALSE otherwise.
 */

BOOL CPages::DevReadConfig(PCOMBINEDEVICE *ppcd, HDC *phDC)
    {
    HRESULT         hr;
    LPSTREAM        pIStream;
    LPMALLOC        pIMalloc;
    PCOMBINEDEVICE  pcd;
    ULONG           cb, cbRead;
    LARGE_INTEGER   li;

    hr=m_pIStorage->OpenStream(SZSTREAMDEVICECONFIG, 0, STGM_DIRECT
        | STGM_READ | STGM_SHARE_EXCLUSIVE, 0, &pIStream);

    if (FAILED(hr))
        return FALSE;

    /*
     * Allocate the COMBINEDEVICE structure including the variable
     * information past the DEVMODE part.
     */

    hr=CoGetMalloc(MEMCTX_TASK, &pIMalloc);

    if (FAILED(hr))
        {
        pIStream->Release();
        return FALSE;
        }