source: trunk/src/gui/painting/qprintengine_qws.cpp@ 746

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#include <private/qprintengine_qws_p.h>

#ifndef QT_NO_PRINTER

#include <private/qpaintengine_raster_p.h>
#include <qimage.h>
#include <qfile.h>
#include <qdebug.h>
#include <QCopChannel>

QT_BEGIN_NAMESPACE

#define MM(n) int((n * 720 + 127) / 254)
#define IN(n) int(n * 72)

extern QSizeF qt_paperSizeToQSizeF(QPrinter::PaperSize size);

QtopiaPrintEngine::QtopiaPrintEngine(QPrinter::PrinterMode mode)
    : QPaintEngine(*(new QtopiaPrintEnginePrivate( mode )))
{
    d_func()->initialize();
}

bool QtopiaPrintEngine::begin(QPaintDevice *)
{
    Q_D(QtopiaPrintEngine);
    Q_ASSERT_X(d->printerState == QPrinter::Idle, "QtopiaPrintEngine", "printer already active");

    // Create a new off-screen monochrome image to handle the drawing process.
    QSize size = paperRect().size();
    if ( d->pageImage )
        delete d->pageImage;
    d->pageImage = new QImage( size, QImage::Format_RGB32 );
    if ( !(d->pageImage) )
        return false;

    // Recreate the paint engine on the new image.
    delete d->_paintEngine;
    d->_paintEngine = 0;
    d->paintEngine()->state = state;

    // Begin the paint process on the image.
    if (!d->paintEngine()->begin(d->pageImage))
        return false;

    // Clear the first page to all-white.
    clearPage();

    // Clear the print buffer and output the image header.
    d->buffer.clear();
    d->writeG3FaxHeader();

    // The print engine is currently active.
    d->printerState = QPrinter::Active;
    return true;
}

bool QtopiaPrintEngine::end()
{
    Q_D(QtopiaPrintEngine);

    d->paintEngine()->end();

    // Flush the last page.
    flushPage();

    // Output the fax data to a file (TODO: send to the print queuing daemon).
    QString filename;
    if ( !d->outputFileName.isEmpty() )
        filename = QString::fromLocal8Bit(qgetenv("HOME").constData()) + QLatin1String("/Documents/") + d->outputFileName;
    else
        filename = QString::fromLocal8Bit(qgetenv("HOME").constData()) + QLatin1String("/tmp/qwsfax.tiff");

    setProperty(QPrintEngine::PPK_OutputFileName, filename);
    QFile file( filename );
    if ( !file.open( QIODevice::WriteOnly | QIODevice::Truncate ) ) {
        qDebug( "Failed to open %s for printer output",
                filename.toLatin1().constData() );
    } else {
        file.write( d->buffer.data() );
        file.close();
    }

    // Free up the memory for the image buffer.
    d->buffer.clear();

    // Finalize the print job.
    d->printerState = QPrinter::Idle;

    // call qcop service
    QMap<QString, QVariant> map;
    for ( int x = 0; x <= QPrintEngine::PPK_Duplex; x++ )
        map.insert( QString::number(x), property((QPrintEngine::PrintEnginePropertyKey)(x)));
    QVariant variant(map);

    QByteArray data;
    QDataStream out(&data, QIODevice::WriteOnly);
    out << variant;
    QCopChannel::send(QLatin1String("QPE/Service/Print"), QLatin1String("print(QVariant)"), data);

    return true;
}

QPaintEngine *QtopiaPrintEngine::paintEngine() const
{
    return const_cast<QtopiaPrintEnginePrivate *>(d_func())->paintEngine();
}

void QtopiaPrintEngine::drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr)
{
    Q_D(QtopiaPrintEngine);
    Q_ASSERT(d->printerState == QPrinter::Active);
    d->paintEngine()->drawPixmap(r, pm, sr);
}

void QtopiaPrintEngine::drawTextItem(const QPointF &p, const QTextItem &ti)
{
    Q_D(QtopiaPrintEngine);
    Q_ASSERT(d->printerState == QPrinter::Active);
    d->paintEngine()->drawTextItem(p, ti);
}

void QtopiaPrintEngine::updateState(const QPaintEngineState &state)
{
    Q_D(QtopiaPrintEngine);
    d->paintEngine()->updateState(state);
}

QRect QtopiaPrintEngine::paperRect() const
{
    QSizeF s = qt_paperSizeToQSizeF(d_func()->paperSize);
    s.rwidth() = MM(s.width());
    s.rheight() = MM(s.height());
    int w = qRound(s.width()*d_func()->resolution/72.);
    int h = qRound(s.height()*d_func()->resolution/72.);
    if (d_func()->orientation == QPrinter::Portrait)
        return QRect(0, 0, w, h);
    else
        return QRect(0, 0, h, w);
}

QRect QtopiaPrintEngine::pageRect() const
{
    QRect r = paperRect();
    if (d_func()->fullPage)
        return r;
    // would be nice to get better margins than this.
    return QRect(d_func()->resolution/3, d_func()->resolution/3, r.width()-2*d_func()->resolution/3, r.height()-2*d_func()->resolution/3);
}

bool QtopiaPrintEngine::newPage()
{
    flushPage();
    clearPage();
    ++(d_func()->pageNumber);
    return true;
}

bool QtopiaPrintEngine::abort()
{
    return false;
}

QPrinter::PrinterState QtopiaPrintEngine::printerState() const
{
    return d_func()->printerState;
}

int QtopiaPrintEngine::metric(QPaintDevice::PaintDeviceMetric metricType) const
{
    int val;
    QRect r = d_func()->fullPage ? paperRect() : pageRect();
    switch (metricType) {
    case QPaintDevice::PdmWidth:
        val = r.width();
        break;
    case QPaintDevice::PdmHeight:
        val = r.height();
        break;
    case QPaintDevice::PdmDpiX:
        val = d_func()->resolution;
        break;
    case QPaintDevice::PdmDpiY:
        val = d_func()->resolution;
        break;
    case QPaintDevice::PdmPhysicalDpiX:
    case QPaintDevice::PdmPhysicalDpiY:
        val = QT_QWS_PRINTER_DEFAULT_DPI;
        break;
    case QPaintDevice::PdmWidthMM:
        val = qRound(r.width()*25.4/d_func()->resolution);
        break;
    case QPaintDevice::PdmHeightMM:
        val = qRound(r.height()*25.4/d_func()->resolution);
        break;
    case QPaintDevice::PdmNumColors:
        val = 2;
        break;
    case QPaintDevice::PdmDepth:
        val = 1;
        break;
    default:
        qWarning("QtopiaPrintEngine::metric: Invalid metric command");
        return 0;
    }
    return val;