C++ DisplayModel::PageCount方法代码示例

void OnMenuPrint(WindowInfo *win, bool waitForCompletion)
{
    // we remember some printer settings per process
    static ScopedMem<DEVMODE> defaultDevMode;
    static PrintScaleAdv defaultScaleAdv = PrintScaleShrink;
    static bool defaultAsImage = false;

    bool printSelection = false;
    Vec<PRINTPAGERANGE> ranges;
    PRINTER_INFO_2 printerInfo = { 0 };

    if (!HasPermission(Perm_PrinterAccess)) return;

    DisplayModel *dm = win->dm;
    assert(dm);
    if (!dm) return;

    if (!dm->engine || !dm->engine->AllowsPrinting())
        return;

    if (win->IsChm()) {
        win->dm->AsChmEngine()->PrintCurrentPage();
        return;
    }

    if (win->printThread) {
        int res = MessageBox(win->hwndFrame, _TR("Printing is still in progress. Abort and start over?"), _TR("Printing in progress."), MB_ICONEXCLAMATION | MB_YESNO | (IsUIRightToLeft() ? MB_RTLREADING : 0));
        if (res == IDNO)
            return;
    }
    AbortPrinting(win);

    PRINTDLGEX pd;
    ZeroMemory(&pd, sizeof(PRINTDLGEX));
    pd.lStructSize = sizeof(PRINTDLGEX);
    pd.hwndOwner   = win->hwndFrame;
    pd.Flags       = PD_USEDEVMODECOPIESANDCOLLATE | PD_COLLATE;
    if (!win->selectionOnPage)
        pd.Flags |= PD_NOSELECTION;
    pd.nCopies     = 1;
    /* by default print all pages */
    pd.nPageRanges = 1;
    pd.nMaxPageRanges = MAXPAGERANGES;
    PRINTPAGERANGE *ppr = AllocArray<PRINTPAGERANGE>(MAXPAGERANGES);
    pd.lpPageRanges = ppr;
    ppr->nFromPage = 1;
    ppr->nToPage = dm->PageCount();
    pd.nMinPage = 1;
    pd.nMaxPage = dm->PageCount();
    pd.nStartPage = START_PAGE_GENERAL;

    Print_Advanced_Data advanced(PrintRangeAll, defaultScaleAdv, defaultAsImage);
    ScopedMem<DLGTEMPLATE> dlgTemplate; // needed for RTL languages
    HPROPSHEETPAGE hPsp = CreatePrintAdvancedPropSheet(&advanced, dlgTemplate);
    pd.lphPropertyPages = &hPsp;
    pd.nPropertyPages = 1;

    // restore remembered settings
    if (defaultDevMode)
        pd.hDevMode = GlobalMemDup(defaultDevMode.Get(), defaultDevMode.Get()->dmSize + defaultDevMode.Get()->dmDriverExtra);

    if (PrintDlgEx(&pd) != S_OK) {
        if (CommDlgExtendedError() != 0) {
            /* if PrintDlg was cancelled then
               CommDlgExtendedError is zero, otherwise it returns the
               error code, which we could look at here if we wanted.
               for now just warn the user that printing has stopped
               becasue of an error */
            MessageBox(win->hwndFrame, _TR("Couldn't initialize printer"), _TR("Printing problem."), MB_ICONEXCLAMATION | MB_OK | (IsUIRightToLeft() ? MB_RTLREADING : 0));
        }
        goto Exit;
    }

    if (pd.dwResultAction == PD_RESULT_PRINT || pd.dwResultAction == PD_RESULT_APPLY) {
        // remember settings for this process
        LPDEVMODE devMode = (LPDEVMODE)GlobalLock(pd.hDevMode);
        if (devMode) {
            defaultDevMode.Set((LPDEVMODE)memdup(devMode, devMode->dmSize + devMode->dmDriverExtra));
            GlobalUnlock(pd.hDevMode);
        }
        defaultScaleAdv = advanced.scale;
        defaultAsImage = advanced.asImage;
    }

    if (pd.dwResultAction != PD_RESULT_PRINT)
        goto Exit;

    if (pd.Flags & PD_CURRENTPAGE) {
        PRINTPAGERANGE pr = { dm->CurrentPageNo(), dm->CurrentPageNo() };
        ranges.Append(pr);
    } else if (win->selectionOnPage && (pd.Flags & PD_SELECTION)) {
        printSelection = true;
    } else if (!(pd.Flags & PD_PAGENUMS)) {
        PRINTPAGERANGE pr = { 1, dm->PageCount() };
        ranges.Append(pr);
    } else {
        assert(pd.nPageRanges > 0);
        for (DWORD i = 0; i < pd.nPageRanges; i++)
            ranges.Append(pd.lpPageRanges[i]);
    }
//.........这里部分代码省略.........

void OnMenuPrint(WindowInfo *win, bool waitForCompletion)
{
    // we remember some printer settings per process
    static ScopedMem<DEVMODE> defaultDevMode;
    static PrintScaleAdv defaultScaleAdv = PrintScaleShrink;
    static bool defaultAsImage = false;

    static bool hasDefaults = false;
    if (!hasDefaults) {
        hasDefaults = true;
        defaultAsImage = gGlobalPrefs->printerDefaults.printAsImage;
        if (str::EqI(gGlobalPrefs->printerDefaults.printScale, "fit"))
            defaultScaleAdv = PrintScaleFit;
        else if (str::EqI(gGlobalPrefs->printerDefaults.printScale, "none"))
            defaultScaleAdv = PrintScaleNone;
    }

    bool printSelection = false;
    Vec<PRINTPAGERANGE> ranges;
    PRINTER_INFO_2 printerInfo = { 0 };

    if (!HasPermission(Perm_PrinterAccess))
        return;

    if (win->AsChm()) {
        // the Print dialog allows access to the file system, so fall back
        // to printing the entire document without dialog if that isn't desired
        bool showUI = HasPermission(Perm_DiskAccess);
        win->AsChm()->PrintCurrentPage(showUI);
        return;
    }
    if (win->AsEbook()) {
        // TODO: use EbookEngine for printing?
        return;
    }

    CrashIf(!win->AsFixed());
    if (!win->AsFixed()) return;
    DisplayModel *dm = win->AsFixed();

#ifndef DISABLE_DOCUMENT_RESTRICTIONS
    if (!dm->engine()->AllowsPrinting())
        return;
#endif

    if (win->printThread) {
        int res = MessageBox(win->hwndFrame, 
                             _TR("Printing is still in progress. Abort and start over?"),
                             _TR("Printing in progress."),
                             MB_ICONEXCLAMATION | MB_YESNO | MbRtlReadingMaybe());
        if (res == IDNO)
            return;
    }
    AbortPrinting(win);

    // the Print dialog allows access to the file system, so fall back
    // to printing the entire document without dialog if that isn't desired
    if (!HasPermission(Perm_DiskAccess)) {
        PrintFile(dm->engine());
        return;
    }

    PRINTDLGEX pd;
    ZeroMemory(&pd, sizeof(PRINTDLGEX));
    pd.lStructSize = sizeof(PRINTDLGEX);
    pd.hwndOwner   = win->hwndFrame;
    pd.Flags       = PD_USEDEVMODECOPIESANDCOLLATE | PD_COLLATE;
    if (!win->selectionOnPage)
        pd.Flags |= PD_NOSELECTION;
    pd.nCopies     = 1;
    /* by default print all pages */
    pd.nPageRanges = 1;
    pd.nMaxPageRanges = MAXPAGERANGES;
    PRINTPAGERANGE *ppr = AllocArray<PRINTPAGERANGE>(MAXPAGERANGES);
    pd.lpPageRanges = ppr;
    ppr->nFromPage = 1;
    ppr->nToPage = dm->PageCount();
    pd.nMinPage = 1;
    pd.nMaxPage = dm->PageCount();
    pd.nStartPage = START_PAGE_GENERAL;

    Print_Advanced_Data advanced(PrintRangeAll, defaultScaleAdv, defaultAsImage);
    ScopedMem<DLGTEMPLATE> dlgTemplate; // needed for RTL languages
    HPROPSHEETPAGE hPsp = CreatePrintAdvancedPropSheet(&advanced, dlgTemplate);
    pd.lphPropertyPages = &hPsp;
    pd.nPropertyPages = 1;

    // restore remembered settings
    if (defaultDevMode) {
        DEVMODE *p = defaultDevMode.Get();
        pd.hDevMode = GlobalMemDup(p, p->dmSize + p->dmDriverExtra);
    }

    if (PrintDlgEx(&pd) != S_OK) {
        if (CommDlgExtendedError() != 0) {
            /* if PrintDlg was cancelled then
               CommDlgExtendedError is zero, otherwise it returns the
               error code, which we could look at here if we wanted.
               for now just warn the user that printing has stopped
               becasue of an error */
//.........这里部分代码省略.........