qprinter.cpp

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#include "qprinter_p.h"
#include "qprinter.h"
#include "qprintengine.h"
#include "qprinterinfo.h"
#include "qlist.h"
#include <qpagesetupdialog.h>
#include <qapplication.h>
#include <qfileinfo.h>
#if !defined(QT_NO_CUPS) && !defined(QT_NO_LIBRARY)
#include "private/qcups_p.h"
#endif

#ifndef QT_NO_PRINTER

#if defined (Q_WS_WIN)
#include <private/qprintengine_win_p.h>
#elif defined (Q_WS_MAC)
#include <private/qprintengine_mac_p.h>
#elif defined (QTOPIA_PRINTENGINE)
#include <private/qprintengine_qws_p.h>
#endif
#include <private/qprintengine_ps_p.h>

#if defined(Q_WS_X11)
#include <private/qt_x11_p.h>
#endif

#ifndef QT_NO_PDF
#include "qprintengine_pdf_p.h"
#endif

#include <qpicture.h>
#include <private/qpaintengine_preview_p.h>

#if defined(QT3_SUPPORT)
#  include "qprintdialog.h"
#endif // QT3_SUPPORT

QT_BEGIN_NAMESPACE

#define ABORT_IF_ACTIVE(location) \
    if (d->printEngine->printerState() == QPrinter::Active) { \
        qWarning("%s: Cannot be changed while printer is active", location); \
        return; \
    }

// NB! This table needs to be in sync with QPrinter::PaperSize
static const float qt_paperSizes[][2] = {
    {210, 297}, // A4
    {176, 250}, // B5
    {215.9f, 279.4f}, // Letter
    {215.9f, 355.6f}, // Legal
    {190.5f, 254}, // Executive
    {841, 1189}, // A0
    {594, 841}, // A1
    {420, 594}, // A2
    {297, 420}, // A3
    {148, 210}, // A5
    {105, 148}, // A6
    {74, 105}, // A7
    {52, 74}, // A8
    {37, 52}, // A8
    {1000, 1414}, // B0
    {707, 1000}, // B1
    {31, 44}, // B10
    {500, 707}, // B2
    {353, 500}, // B3
    {250, 353}, // B4
    {125, 176}, // B6
    {88, 125}, // B7
    {62, 88}, // B8
    {33, 62}, // B9
    {163, 229}, // C5E
    {105, 241}, // US Common
    {110, 220}, // DLE
    {210, 330}, // Folio
    {431.8f, 279.4f}, // Ledger
    {279.4f, 431.8f} // Tabloid
};

double qt_multiplierForUnit(QPrinter::Unit unit, int resolution)
{
    switch(unit) {
    case QPrinter::Millimeter:
        return 2.83464566929;
    case QPrinter::Point:
        return 1.0;
    case QPrinter::Inch:
        return 72.0;
    case QPrinter::Pica:
        return 12;
    case QPrinter::Didot:
        return 1.065826771;
    case QPrinter::Cicero:
        return 12.789921252;
    case QPrinter::DevicePixel:
        return 72.0/resolution;
    }
    return 1.0;
}

// not static: it's needed in qpagesetupdialog_unix.cpp
QSizeF qt_printerPaperSize(QPrinter::Orientation orientation,
                           QPrinter::PaperSize paperSize,
                           QPrinter::Unit unit,
                           int resolution)
{
    int width_index = 0;
    int height_index = 1;
    if (orientation == QPrinter::Landscape) {
        width_index = 1;
        height_index = 0;
    }
    const qreal multiplier = qt_multiplierForUnit(unit, resolution);
    return QSizeF((qt_paperSizes[paperSize][width_index] * 72 / 25.4) / multiplier,
                  (qt_paperSizes[paperSize][height_index] * 72 / 25.4) / multiplier);
}

void QPrinterPrivate::createDefaultEngines()
{
    QPrinter::OutputFormat realOutputFormat = outputFormat;
#if !defined (QTOPIA_PRINTENGINE)
#if defined (Q_OS_UNIX) && ! defined (Q_WS_MAC)
    if(outputFormat == QPrinter::NativeFormat) {
        realOutputFormat = QPrinter::PostScriptFormat;
    }
#endif
#endif

    switch (realOutputFormat) {
    case QPrinter::NativeFormat: {
#if defined (Q_WS_WIN)
        QWin32PrintEngine *winEngine = new QWin32PrintEngine(printerMode);
        paintEngine = winEngine;
        printEngine = winEngine;
#elif defined (Q_WS_MAC)
        QMacPrintEngine *macEngine = new QMacPrintEngine(printerMode);
        paintEngine = macEngine;
        printEngine = macEngine;
#elif defined (QTOPIA_PRINTENGINE)
        QtopiaPrintEngine *qwsEngine = new QtopiaPrintEngine(printerMode);
        paintEngine = qwsEngine;
        printEngine = qwsEngine;
#elif defined (Q_OS_UNIX)
        Q_ASSERT(false);
#endif
        }
        break;
    case QPrinter::PdfFormat: {
        QPdfEngine *pdfEngine = new QPdfEngine(printerMode);
        paintEngine = pdfEngine;
        printEngine = pdfEngine;
    }
        break;
    case QPrinter::PostScriptFormat: {
        QPSPrintEngine *psEngine = new QPSPrintEngine(printerMode);
        paintEngine = psEngine;
        printEngine = psEngine;
    }
        break;
    }
    use_default_engine = true;
    had_default_engines = true;
}

#ifndef QT_NO_PRINTPREVIEWWIDGET
QList<const QPicture *> QPrinterPrivate::previewPages() const
{
    if (previewEngine)
        return previewEngine->pages();
    return QList<const QPicture *>();
}

void QPrinterPrivate::setPreviewMode(bool enable)
{
    Q_Q(QPrinter);
    if (enable) {
        if (!previewEngine)
            previewEngine = new QPreviewPaintEngine;
        had_default_engines = use_default_engine;
        use_default_engine = false;
        realPrintEngine = printEngine;
        realPaintEngine = paintEngine;
        q->setEngines(previewEngine, previewEngine);
        previewEngine->setProxyEngines(realPrintEngine, realPaintEngine);
    } else {
        q->setEngines(realPrintEngine, realPaintEngine);
        use_default_engine = had_default_engines;
    }
}
#endif // QT_NO_PRINTPREVIEWWIDGET

void QPrinterPrivate::addToManualSetList(QPrintEngine::PrintEnginePropertyKey key)
{
    for (int c = 0; c < manualSetList.size(); ++c) {
        if (manualSetList[c] == key) return;
    }
    manualSetList.append(key);
}


/*
  \enum QPrinter::PrintRange

  This enum is used to specify which print range the application
  should use to print.

  \value AllPages All the pages should be printed.
  \value Selection Only the selection should be printed.
  \value PageRange Print according to the from page and to page options.
  \value CurrentPage Only the current page should be printed.

  \sa setPrintRange(), printRange()
*/

/*
  \enum QPrinter::PrinterOption

  This enum describes various printer options that appear in the
  printer setup dialog. It is used to enable and disable these
  options in the setup dialog.

  \value PrintToFile Describes if print to file should be enabled.
  \value PrintSelection Describes if printing selections should be enabled.
  \value PrintPageRange Describes if printing page ranges (from, to) should
  be enabled
  \value PrintCurrentPage if Print Current Page option should be enabled

  \sa setOptionEnabled(), isOptionEnabled()
*/

QPrinter::QPrinter(PrinterMode mode)
    : QPaintDevice(),
      d_ptr(new QPrinterPrivate(this))
{
    init(mode);
    QPrinterInfo defPrn(QPrinterInfo::defaultPrinter());
    if (!defPrn.isNull()) {
        setPrinterName(defPrn.printerName());
    } else if (QPrinterInfo::availablePrinters().isEmpty()
               && d_ptr->paintEngine->type() != QPaintEngine::Windows
               && d_ptr->paintEngine->type() != QPaintEngine::MacPrinter) {
        setOutputFormat(QPrinter::PdfFormat);
    }
}

QPrinter::QPrinter(const QPrinterInfo& printer, PrinterMode mode)
    : QPaintDevice(),
      d_ptr(new QPrinterPrivate(this))
{
    init(mode);
    setPrinterName(printer.printerName());
}

void QPrinter::init(PrinterMode mode)
{
#if !defined(Q_WS_X11)
    if (!qApp) {
#else
    if (!qApp || !X11) {
#endif
        qFatal("QPrinter: Must construct a QApplication before a QPaintDevice");
        return;
    }
    Q_D(QPrinter);

    d->printerMode = mode;
    d->outputFormat = QPrinter::NativeFormat;
    d->createDefaultEngines();

#ifndef QT_NO_PRINTPREVIEWWIDGET
    d->previewEngine = 0;
#endif
    d->realPrintEngine = 0;
    d->realPaintEngine = 0;

#if !defined(QT_NO_CUPS) && !defined(QT_NO_LIBRARY)
    if (QCUPSSupport::cupsVersion() >= 10200 && QCUPSSupport().currentPPD()) {
        setOutputFormat(QPrinter::PdfFormat);
        d->outputFormat = QPrinter::NativeFormat;
    }
#endif
}

void QPrinter::setEngines(QPrintEngine *printEngine, QPaintEngine *paintEngine)
{
    Q_D(QPrinter);

    if (d->use_default_engine)
        delete d->printEngine;

    d->printEngine = printEngine;
    d->paintEngine = paintEngine;
    d->use_default_engine = false;
}

QPrinter::~QPrinter()
{
    Q_D(QPrinter);
    if (d->use_default_engine)
        delete d->printEngine;
#ifndef QT_NO_PRINTPREVIEWWIDGET
    delete d->previewEngine;
#endif
}

void QPrinter::setOutputFormat(OutputFormat format)
{

#ifndef QT_NO_PDF
    Q_D(QPrinter);
    if (d->validPrinter && d->outputFormat == format)
        return;
    d->outputFormat = format;

    QPrintEngine *oldPrintEngine = d->printEngine;
    const bool def_engine = d->use_default_engine;
    d->printEngine = 0;

    d->createDefaultEngines();

    if (oldPrintEngine) {
        for (int i = 0; i < d->manualSetList.size(); ++i) {
            QPrintEngine::PrintEnginePropertyKey key = d->manualSetList[i];
            QVariant prop;
            // PPK_NumberOfCopies need special treatmeant since it in most cases
            // will return 1, disregarding the actual value that was set
            if (key == QPrintEngine::PPK_NumberOfCopies)
                prop = QVariant(copyCount());
            else
                prop = oldPrintEngine->property(key);
            if (prop.isValid())
                d->printEngine->setProperty(key, prop);
        }
    }

    if (def_engine)
        delete oldPrintEngine;

    if (d->outputFormat == QPrinter::PdfFormat || d->outputFormat == QPrinter::PostScriptFormat)
        d->validPrinter = true;
#else
    Q_UNUSED(format);
#endif
}

QPrinter::OutputFormat QPrinter::outputFormat() const
{
    Q_D(const QPrinter);
    return d->outputFormat;
}



int QPrinter::devType() const
{
    return QInternal::Printer;
}

QString QPrinter::printerName() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_PrinterName).toString();
}

void QPrinter::setPrinterName(const QString &name)
{
    Q_D(QPrinter);
    ABORT_IF_ACTIVE("QPrinter::setPrinterName");

#if defined(Q_OS_UNIX) && !defined(QT_NO_CUPS)
    if(d->use_default_engine
        && d->outputFormat == QPrinter::NativeFormat) {
        if (QCUPSSupport::cupsVersion() >= 10200
            && QCUPSSupport::printerHasPPD(name.toLocal8Bit().constData()))
            setOutputFormat(QPrinter::PdfFormat);
        else
            setOutputFormat(QPrinter::PostScriptFormat);
        d->outputFormat = QPrinter::NativeFormat;
    }
#endif

    QList<QPrinterInfo> prnList = QPrinterInfo::availablePrinters();
    if (name.isEmpty()) {
        d->validPrinter = d->outputFormat == QPrinter::PdfFormat || d->outputFormat == QPrinter::PostScriptFormat;
    } else {
        d->validPrinter = false;
        for (int i = 0; i < prnList.size(); ++i) {
            if (prnList[i].printerName() == name) {
                d->validPrinter = true;
                break;
            }
        }
    }

    d->printEngine->setProperty(QPrintEngine::PPK_PrinterName, name);
    d->addToManualSetList(QPrintEngine::PPK_PrinterName);
}


bool QPrinter::isValid() const
{
    Q_D(const QPrinter);
#if defined(Q_WS_X11)
    if (!qApp || !X11) {
        return false;
    }
#endif
    return d->validPrinter;
}


QString QPrinter::outputFileName() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_OutputFileName).toString();
}

void QPrinter::setOutputFileName(const QString &fileName)
{
    Q_D(QPrinter);
    ABORT_IF_ACTIVE("QPrinter::setOutputFileName");

    QFileInfo fi(fileName);
    if (!fi.suffix().compare(QLatin1String("ps"), Qt::CaseInsensitive))
        setOutputFormat(QPrinter::PostScriptFormat);
    else if (!fi.suffix().compare(QLatin1String("pdf"), Qt::CaseInsensitive))
        setOutputFormat(QPrinter::PdfFormat);
    else if (fileName.isEmpty())
        setOutputFormat(QPrinter::NativeFormat);

    d->printEngine->setProperty(QPrintEngine::PPK_OutputFileName, fileName);
    d->addToManualSetList(QPrintEngine::PPK_OutputFileName);
}


QString QPrinter::printProgram() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_PrinterProgram).toString();
}


void QPrinter::setPrintProgram(const QString &printProg)
{
    Q_D(QPrinter);
    ABORT_IF_ACTIVE("QPrinter::setPrintProgram");
    d->printEngine->setProperty(QPrintEngine::PPK_PrinterProgram, printProg);
    d->addToManualSetList(QPrintEngine::PPK_PrinterProgram);
}


QString QPrinter::docName() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_DocumentName).toString();
}


void QPrinter::setDocName(const QString &name)
{
    Q_D(QPrinter);
    ABORT_IF_ACTIVE("QPrinter::setDocName");
    d->printEngine->setProperty(QPrintEngine::PPK_DocumentName, name);
    d->addToManualSetList(QPrintEngine::PPK_DocumentName);
}


QString QPrinter::creator() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_Creator).toString();
}


void QPrinter::setCreator(const QString &creator)
{
    Q_D(QPrinter);
    ABORT_IF_ACTIVE("QPrinter::setCreator");
    d->printEngine->setProperty(QPrintEngine::PPK_Creator, creator);
    d->addToManualSetList(QPrintEngine::PPK_Creator);
}


QPrinter::Orientation QPrinter::orientation() const
{
    Q_D(const QPrinter);
    return QPrinter::Orientation(d->printEngine->property(QPrintEngine::PPK_Orientation).toInt());
}


void QPrinter::setOrientation(Orientation orientation)
{
    Q_D(QPrinter);
    d->printEngine->setProperty(QPrintEngine::PPK_Orientation, orientation);
    d->addToManualSetList(QPrintEngine::PPK_Orientation);
}


QPrinter::PaperSize QPrinter::paperSize() const
{
    Q_D(const QPrinter);
    return QPrinter::PaperSize(d->printEngine->property(QPrintEngine::PPK_PaperSize).toInt());
}

void QPrinter::setPaperSize(PaperSize newPaperSize)
{
    Q_D(QPrinter);
    if (d->paintEngine->type() != QPaintEngine::Pdf)
        ABORT_IF_ACTIVE("QPrinter::setPaperSize");
    if (newPaperSize < 0 || newPaperSize >= NPaperSize) {
        qWarning("QPrinter::setPaperSize: Illegal paper size %d", newPaperSize);
        return;
    }
    d->printEngine->setProperty(QPrintEngine::PPK_PaperSize, newPaperSize);
    d->addToManualSetList(QPrintEngine::PPK_PaperSize);
    d->hasUserSetPageSize = true;
}

QPrinter::PageSize QPrinter::pageSize() const
{
    return paperSize();
}


void QPrinter::setPageSize(PageSize newPageSize)
{
    setPaperSize(newPageSize);
}

void QPrinter::setPaperSize(const QSizeF &paperSize, QPrinter::Unit unit)
{
    Q_D(QPrinter);
    if (d->paintEngine->type() != QPaintEngine::Pdf)
        ABORT_IF_ACTIVE("QPrinter::setPaperSize");
    const qreal multiplier = qt_multiplierForUnit(unit, resolution());
    QSizeF size(paperSize.width() * multiplier, paperSize.height() * multiplier);
    d->printEngine->setProperty(QPrintEngine::PPK_CustomPaperSize, size);
    d->addToManualSetList(QPrintEngine::PPK_CustomPaperSize);
    d->hasUserSetPageSize = true;
}

QSizeF QPrinter::paperSize(Unit unit) const
{
    Q_D(const QPrinter);
    int res = resolution();
    const qreal multiplier = qt_multiplierForUnit(unit, res);
    PaperSize paperType = paperSize();
    if (paperType == Custom) {
        QSizeF size = d->printEngine->property(QPrintEngine::PPK_CustomPaperSize).toSizeF();
        return QSizeF(size.width() / multiplier, size.height() / multiplier);
    }
    else {
        return qt_printerPaperSize(orientation(), paperType, unit, res);
    }
}

void QPrinter::setPageOrder(PageOrder pageOrder)
{
    Q_D(QPrinter);
    ABORT_IF_ACTIVE("QPrinter::setPageOrder");
    d->printEngine->setProperty(QPrintEngine::PPK_PageOrder, pageOrder);
    d->addToManualSetList(QPrintEngine::PPK_PageOrder);
}


QPrinter::PageOrder QPrinter::pageOrder() const
{
    Q_D(const QPrinter);
    return QPrinter::PageOrder(d->printEngine->property(QPrintEngine::PPK_PageOrder).toInt());
}


void QPrinter::setColorMode(ColorMode newColorMode)
{
    Q_D(QPrinter);
    ABORT_IF_ACTIVE("QPrinter::setColorMode");
    d->printEngine->setProperty(QPrintEngine::PPK_ColorMode, newColorMode);
    d->addToManualSetList(QPrintEngine::PPK_ColorMode);
}


QPrinter::ColorMode QPrinter::colorMode() const
{
    Q_D(const QPrinter);
    return QPrinter::ColorMode(d->printEngine->property(QPrintEngine::PPK_ColorMode).toInt());
}


int QPrinter::numCopies() const
{
    Q_D(const QPrinter);
   return d->printEngine->property(QPrintEngine::PPK_NumberOfCopies).toInt();
}


int QPrinter::actualNumCopies() const
{
    return copyCount();
}



void QPrinter::setNumCopies(int numCopies)
{
    Q_D(QPrinter);
    ABORT_IF_ACTIVE("QPrinter::setNumCopies");
    d->printEngine->setProperty(QPrintEngine::PPK_NumberOfCopies, numCopies);
    d->addToManualSetList(QPrintEngine::PPK_NumberOfCopies);
}

void QPrinter::setCopyCount(int count)
{
    Q_D(QPrinter);
    ABORT_IF_ACTIVE("QPrinter::setCopyCount;");
    d->printEngine->setProperty(QPrintEngine::PPK_CopyCount, count);
    d->addToManualSetList(QPrintEngine::PPK_CopyCount);
}

int QPrinter::copyCount() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_CopyCount).toInt();
}

bool QPrinter::supportsMultipleCopies() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_SupportsMultipleCopies).toBool();
}

bool QPrinter::collateCopies() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_CollateCopies).toBool();
}


void QPrinter::setCollateCopies(bool collate)
{
    Q_D(QPrinter);
    ABORT_IF_ACTIVE("QPrinter::setCollateCopies");
    d->printEngine->setProperty(QPrintEngine::PPK_CollateCopies, collate);
    d->addToManualSetList(QPrintEngine::PPK_CollateCopies);
}



void QPrinter::setFullPage(bool fp)
{
    Q_D(QPrinter);
    d->printEngine->setProperty(QPrintEngine::PPK_FullPage, fp);
    d->addToManualSetList(QPrintEngine::PPK_FullPage);
}


bool QPrinter::fullPage() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_FullPage).toBool();
}


void QPrinter::setResolution(int dpi)
{
    Q_D(QPrinter);
    ABORT_IF_ACTIVE("QPrinter::setResolution");
    d->printEngine->setProperty(QPrintEngine::PPK_Resolution, dpi);
    d->addToManualSetList(QPrintEngine::PPK_Resolution);
}


int QPrinter::resolution() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_Resolution).toInt();
}

void QPrinter::setPaperSource(PaperSource source)
{
    Q_D(QPrinter);
    d->printEngine->setProperty(QPrintEngine::PPK_PaperSource, source);
    d->addToManualSetList(QPrintEngine::PPK_PaperSource);
}

QPrinter::PaperSource QPrinter::paperSource() const
{
    Q_D(const QPrinter);
    return QPrinter::PaperSource(d->printEngine->property(QPrintEngine::PPK_PaperSource).toInt());
}


void QPrinter::setFontEmbeddingEnabled(bool enable)
{
    Q_D(QPrinter);
    d->printEngine->setProperty(QPrintEngine::PPK_FontEmbedding, enable);
    d->addToManualSetList(QPrintEngine::PPK_FontEmbedding);
}

bool QPrinter::fontEmbeddingEnabled() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_FontEmbedding).toBool();
}

void QPrinter::setDoubleSidedPrinting(bool doubleSided)
{
    setDuplex(doubleSided ? DuplexAuto : DuplexNone);
}


bool QPrinter::doubleSidedPrinting() const
{
    return duplex() != DuplexNone;
}

void QPrinter::setDuplex(DuplexMode duplex)
{
    Q_D(QPrinter);
    d->printEngine->setProperty(QPrintEngine::PPK_Duplex, duplex);
    d->addToManualSetList(QPrintEngine::PPK_Duplex);
}

QPrinter::DuplexMode QPrinter::duplex() const
{
    Q_D(const QPrinter);
    return static_cast <DuplexMode> (d->printEngine->property(QPrintEngine::PPK_Duplex).toInt());
}

QRectF QPrinter::pageRect(Unit unit) const
{
    Q_D(const QPrinter);
    int res = resolution();
    const qreal multiplier = qt_multiplierForUnit(unit, res);
    // the page rect is in device pixels
    QRect devRect(d->printEngine->property(QPrintEngine::PPK_PageRect).toRect());
    if (unit == DevicePixel)
        return devRect;
    QRectF diRect(devRect.x()*72.0/res,
                  devRect.y()*72.0/res,
                  devRect.width()*72.0/res,
                  devRect.height()*72.0/res);
    return QRectF(diRect.x()/multiplier, diRect.y()/multiplier,
                  diRect.width()/multiplier, diRect.height()/multiplier);
}


QRectF QPrinter::paperRect(Unit unit) const
{
    Q_D(const QPrinter);
    int res = resolution();
    const qreal multiplier = qt_multiplierForUnit(unit, resolution());
    // the page rect is in device pixels
    QRect devRect(d->printEngine->property(QPrintEngine::PPK_PaperRect).toRect());
    if (unit == DevicePixel)
        return devRect;
    QRectF diRect(devRect.x()*72.0/res,
                  devRect.y()*72.0/res,
                  devRect.width()*72.0/res,
                  devRect.height()*72.0/res);
    return QRectF(diRect.x()/multiplier, diRect.y()/multiplier,
                  diRect.width()/multiplier, diRect.height()/multiplier);
}

QRect QPrinter::pageRect() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_PageRect).toRect();
}

QRect QPrinter::paperRect() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_PaperRect).toRect();
}


void QPrinter::setPageMargins(qreal left, qreal top, qreal right, qreal bottom, QPrinter::Unit unit)
{
    Q_D(QPrinter);
    const qreal multiplier = qt_multiplierForUnit(unit, resolution());
    QList<QVariant> margins;
    margins << (left * multiplier) << (top * multiplier)
            << (right * multiplier) << (bottom * multiplier);
    d->printEngine->setProperty(QPrintEngine::PPK_PageMargins, margins);
    d->addToManualSetList(QPrintEngine::PPK_PageMargins);
    d->hasCustomPageMargins = true;
}

void QPrinter::getPageMargins(qreal *left, qreal *top, qreal *right, qreal *bottom, QPrinter::Unit unit) const
{
    Q_D(const QPrinter);
    Q_ASSERT(left && top && right && bottom);
    const qreal multiplier = qt_multiplierForUnit(unit, resolution());
    QList<QVariant> margins(d->printEngine->property(QPrintEngine::PPK_PageMargins).toList());
    *left = margins.at(0).toReal() / multiplier;
    *top = margins.at(1).toReal() / multiplier;
    *right = margins.at(2).toReal() / multiplier;
    *bottom = margins.at(3).toReal() / multiplier;
}

int QPrinter::metric(PaintDeviceMetric id) const
{
    Q_D(const QPrinter);
    return d->printEngine->metric(id);
}

QPaintEngine *QPrinter::paintEngine() const
{
    Q_D(const QPrinter);
    return d->paintEngine;
}

QPrintEngine *QPrinter::printEngine() const
{
    Q_D(const QPrinter);
    return d->printEngine;
}

#if defined (Q_WS_WIN)

void QPrinter::setWinPageSize(int pageSize)
{
    Q_D(QPrinter);
    ABORT_IF_ACTIVE("QPrinter::setWinPageSize");
    d->printEngine->setProperty(QPrintEngine::PPK_WindowsPageSize, pageSize);
    d->addToManualSetList(QPrintEngine::PPK_WindowsPageSize);
}

int QPrinter::winPageSize() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_WindowsPageSize).toInt();
}
#endif // Q_WS_WIN

QList<int> QPrinter::supportedResolutions() const
{
    Q_D(const QPrinter);
    QList<QVariant> varlist
        = d->printEngine->property(QPrintEngine::PPK_SupportedResolutions).toList();
    QList<int> intlist;
    for (int i=0; i<varlist.size(); ++i)
        intlist << varlist.at(i).toInt();
    return intlist;
}

bool QPrinter::newPage()
{
    Q_D(QPrinter);
    if (d->printEngine->printerState() != QPrinter::Active)
        return false;
    return d->printEngine->newPage();
}

bool QPrinter::abort()
{
    Q_D(QPrinter);
    return d->printEngine->abort();
}

QPrinter::PrinterState QPrinter::printerState() const
{
    Q_D(const QPrinter);
    return d->printEngine->printerState();
}


#ifdef Q_WS_WIN

HDC QPrinter::getDC() const
{
    Q_D(const QPrinter);
    return d->printEngine->getPrinterDC();
}

void QPrinter::releaseDC(HDC hdc) const
{
    Q_D(const QPrinter);
    d->printEngine->releasePrinterDC(hdc);
}

QList<QPrinter::PaperSource> QPrinter::supportedPaperSources() const
{
    Q_D(const QPrinter);
    QVariant v = d->printEngine->property(QPrintEngine::PPK_PaperSources);

    QList<QVariant> variant_list = v.toList();
    QList<QPrinter::PaperSource> int_list;
    for (int i=0; i<variant_list.size(); ++i)
        int_list << (QPrinter::PaperSource) variant_list.at(i).toInt();

    return int_list;
}

#endif

#ifndef Q_WS_WIN
QString QPrinter::printerSelectionOption() const
{
    Q_D(const QPrinter);
    return d->printEngine->property(QPrintEngine::PPK_SelectionOption).toString();
}

void QPrinter::setPrinterSelectionOption(const QString &option)
{
    Q_D(QPrinter);
    d->printEngine->setProperty(QPrintEngine::PPK_SelectionOption, option);
    d->addToManualSetList(QPrintEngine::PPK_SelectionOption);
}
#endif

int QPrinter::fromPage() const
{
    Q_D(const QPrinter);
    return d->fromPage;
}

int QPrinter::toPage() const
{
    Q_D(const QPrinter);
    return d->toPage;
}

void QPrinter::setFromTo(int from, int to)
{
    Q_D(QPrinter);
    if (from > to) {
        qWarning() << "QPrinter::setFromTo: 'from' must be less than or equal to 'to'";
        from = to;
    }
    d->fromPage = from;
    d->toPage = to;

    if (d->minPage == 0 && d->maxPage == 0) {
        d->minPage = 1;
        d->maxPage = to;
        d->options |= QAbstractPrintDialog::PrintPageRange;
    }
}

void QPrinter::setPrintRange( PrintRange range )
{
    Q_D(QPrinter);
    d->printRange = QAbstractPrintDialog::PrintRange(range);
}

QPrinter::PrintRange QPrinter::printRange() const
{
    Q_D(const QPrinter);
    return PrintRange(d->printRange);
}

#if defined(QT3_SUPPORT)

void QPrinter::setOutputToFile(bool f)
{
    if (f) {
        if (outputFileName().isEmpty())
            setOutputFileName(QLatin1String("untitled_printer_document"));
    } else {
        setOutputFileName(QString());
    }
}

bool qt_compat_QPrinter_printSetup(QPrinter *printer, QPrinterPrivate *pd, QWidget *parent)
{
    Q_UNUSED(pd);
    QPrintDialog dlg(printer, parent);
    return dlg.exec() != 0;
}


#ifdef Q_WS_MAC
bool qt_compat_QPrinter_pageSetup(QPrinter *p, QWidget *parent)
{
    QPageSetupDialog psd(p, parent);
    return psd.exec() != 0;
}

bool QPrinter::pageSetup(QWidget *parent)
{
    return qt_compat_QPrinter_pageSetup(this, parent);
}

bool QPrinter::printSetup(QWidget *parent)
{
    Q_D(QPrinter);
    return qt_compat_QPrinter_printSetup(this, d, parent);
}
#endif // Q_WS_MAC

bool QPrinter::setup(QWidget *parent)
{
    Q_D(QPrinter);
    return qt_compat_QPrinter_printSetup(this, d, parent)
#ifdef Q_WS_MAC
        && qt_compat_QPrinter_pageSetup(this, parent);
#endif
        ;
}

int QPrinter::minPage() const
{
    Q_D(const QPrinter);
    return d->minPage;
}

int QPrinter::maxPage() const
{
    Q_D(const QPrinter);
    return d->maxPage;
}

void QPrinter::setMinMax( int minPage, int maxPage )
{
    Q_D(QPrinter);
    Q_ASSERT_X(minPage <= maxPage, "QPrinter::setMinMax",
               "'min' must be less than or equal to 'max'");
    d->minPage = minPage;
    d->maxPage = maxPage;
    d->options |= QPrintDialog::PrintPageRange;
}

bool QPrinter::collateCopiesEnabled() const
{
    Q_D(const QPrinter);
    return (d->options & QPrintDialog::PrintCollateCopies);
}

void QPrinter::setCollateCopiesEnabled(bool enable)
{
    Q_D(QPrinter);

    if (enable)
        d->options |= QPrintDialog::PrintCollateCopies;
    else
        d->options &= ~QPrintDialog::PrintCollateCopies;
}

void QPrinter::setOptionEnabled( PrinterOption option, bool enable )
{
    Q_D(QPrinter);
    if (enable)
        d->options |= QPrintDialog::PrintDialogOption(1 << option);
    else
        d->options &= ~QPrintDialog::PrintDialogOption(1 << option);
}

bool QPrinter::isOptionEnabled( PrinterOption option ) const
{
    Q_D(const QPrinter);
    return (d->options & QPrintDialog::PrintDialogOption(option));
}

#endif // QT3_SUPPORT

/*
    Returns the dimensions for the given paper size, \a size, in millimeters.
*/
QSizeF qt_paperSizeToQSizeF(QPrinter::PaperSize size)
{
    if (size == QPrinter::Custom) return QSizeF(0, 0);
    return QSizeF(qt_paperSizes[size][0], qt_paperSizes[size][1]);
}

/*
    Returns the PaperSize type that matches \a size, where \a size
    is in millimeters.

    Because dimensions may not always be completely accurate (for
    example when converting between units), a particular PaperSize
    will be returned if it matches within -1/+1 millimeters.
*/
QPrinter::PaperSize qSizeFTopaperSize(const QSizeF& size)
{
    for (int i = 0; i < static_cast<int>(QPrinter::NPaperSize); ++i) {
        if (qt_paperSizes[i][0] >= size.width() - 1 &&
                qt_paperSizes[i][0] <= size.width() + 1 &&
                qt_paperSizes[i][1] >= size.height() - 1 &&
                qt_paperSizes[i][1] <= size.height() + 1) {
            return QPrinter::PaperSize(i);
        }
    }

    return QPrinter::Custom;
}

QT_END_NAMESPACE

#endif // QT_NO_PRINTER