qpdf.cpp

奇趣公司比较新的qt/emd版本

    bool hb = d->hasBrush;
    QPainterPath p;

    switch(mode) {
    case OddEvenMode:
        p.setFillRule(Qt::OddEvenFill);
        break;
    case ConvexMode:
    case WindingMode:
        p.setFillRule(Qt::WindingFill);
        break;
    case PolylineMode:
        d->hasBrush = false;
        break;
    default:
        break;
    }

    p.moveTo(points[0]);
    for (int i = 1; i < pointCount; ++i)
        p.lineTo(points[i]);

    if (mode != PolylineMode)
        p.closeSubpath();
    drawPath(p);

    d->hasBrush = hb;
}

void QPdfBaseEngine::drawPath (const QPainterPath &p)
{
    Q_D(QPdfBaseEngine);
    if (d->clipEnabled && d->allClipped)
        return;
    if (!d->hasPen && !d->hasBrush)
        return;

    if (d->simplePen) {
        // draw strokes natively in this case for better output
        *d->currentPage << QPdf::generatePath(p, QTransform(), d->hasBrush ? QPdf::FillAndStrokePath : QPdf::StrokePath);
    } else {
        if (d->hasBrush)
            *d->currentPage << QPdf::generatePath(p, d->stroker.matrix, QPdf::FillPath);
        if (d->hasPen) {
            *d->currentPage << "q\n";
            QBrush b = d->brush;
            d->brush = d->pen.brush();
            setBrush();
            d->stroker.strokePath(p);
            *d->currentPage << "Q\n";
            d->brush = b;
        }
    }
}

void QPdfBaseEngine::drawTextItem(const QPointF &p, const QTextItem &textItem)
{
    Q_D(QPdfBaseEngine);

    if (!d->hasPen || (d->clipEnabled && d->allClipped))
        return;

    *d->currentPage << "q\n";
    if(!d->simplePen)
        *d->currentPage << QPdf::generateMatrix(d->stroker.matrix);

    bool hp = d->hasPen;
    d->hasPen = false;
    QBrush b = d->brush;
    d->brush = d->pen.brush();
    setBrush();

    const QTextItemInt &ti = static_cast<const QTextItemInt &>(textItem);
    Q_ASSERT(ti.fontEngine->type() != QFontEngine::Multi);
    d->drawTextItem(p, ti);
    d->hasPen = hp;
    d->brush = b;
    *d->currentPage << "Q\n";
}


void QPdfBaseEngine::updateState(const QPaintEngineState &state)
{
    Q_D(QPdfBaseEngine);
    QPaintEngine::DirtyFlags flags = state.state();

    if (flags & DirtyTransform)
        d->stroker.matrix = state.transform();

    if (flags & DirtyPen) {
        d->pen = state.pen();
        d->hasPen = d->pen.style() != Qt::NoPen;
        d->stroker.setPen(d->pen);
        QBrush penBrush = d->pen.brush();
        bool oldSimple = d->simplePen;
        d->simplePen = (d->hasPen && (penBrush.style() == Qt::SolidPattern) && penBrush.isOpaque());
        if (oldSimple != d->simplePen)
            flags |= DirtyTransform;
    }
    if (flags & DirtyBrush) {
        d->brush = state.brush();
        d->hasBrush = d->brush.style() != Qt::NoBrush;
    }
    if (flags & DirtyBrushOrigin) {
        d->brushOrigin = state.brushOrigin();
        flags |= DirtyBrush;
    }

    bool ce = d->clipEnabled;
    if (flags & DirtyClipPath) {
        d->clipEnabled = true;
        updateClipPath(state.clipPath(), state.clipOperation());
    } else if (flags & DirtyClipRegion) {
        d->clipEnabled = true;
        QPainterPath path;
        QVector<QRect> rects = state.clipRegion().rects();
        for (int i = 0; i < rects.size(); ++i)
            path.addRect(rects.at(i));
        updateClipPath(path, state.clipOperation());
        flags |= DirtyClipPath;
    } else if (flags & DirtyClipEnabled) {
        d->clipEnabled = state.isClipEnabled();
    }

    if (ce != d->clipEnabled)
        flags |= DirtyClipPath;
    else if (!d->clipEnabled)
        flags &= ~DirtyClipPath;

    setupGraphicsState(flags);
}

void QPdfBaseEngine::setupGraphicsState(QPaintEngine::DirtyFlags flags)
{
    Q_D(QPdfBaseEngine);
    if (flags & DirtyClipPath)
        flags |= DirtyTransform|DirtyPen|DirtyBrush;

    if (flags & DirtyTransform) {
        *d->currentPage << "Q\n";
        flags |= DirtyPen|DirtyBrush;
    }

    if (flags & DirtyClipPath) {
        *d->currentPage << "Q q\n";

        d->allClipped = false;
        if (d->clipEnabled && !d->clips.isEmpty()) {
            for (int i = 0; i < d->clips.size(); ++i) {
                if (d->clips.at(i).isEmpty()) {
                    d->allClipped = true;
                    break;
                }
            }
            if (!d->allClipped) {
                for (int i = 0; i < d->clips.size(); ++i) {
                    *d->currentPage << QPdf::generatePath(d->clips.at(i), QTransform(), QPdf::ClipPath);
                }
            }
        }
    }

    if (flags & DirtyTransform) {
        *d->currentPage << "q\n";
        if (d->simplePen && !d->stroker.matrix.isIdentity())
            *d->currentPage << QPdf::generateMatrix(d->stroker.matrix);
    }
    if (flags & DirtyBrush)
        setBrush();
    if (d->simplePen && (flags & DirtyPen))
        setPen();
}

void QPdfBaseEngine::updateClipPath(const QPainterPath &p, Qt::ClipOperation op)
{
    Q_D(QPdfBaseEngine);
    QPainterPath path = d->stroker.matrix.map(p);
    //qDebug() << "updateClipPath: " << d->stroker.matrix << p.boundingRect() << path.boundingRect() << op;

    if (op == Qt::NoClip) {
        d->clipEnabled = false;
        d->clips.clear();
    } else if (op == Qt::ReplaceClip) {
        d->clips.clear();
        d->clips.append(path);
    } else if (op == Qt::IntersectClip) {
        d->clips.append(path);
    } else { // UniteClip
        // ask the painter for the current clipping path. that's the easiest solution
        path = painter()->clipPath();
        path = d->stroker.matrix.map(path);
        d->clips.clear();
        d->clips.append(path);
    }
}

void QPdfBaseEngine::setPen()
{
    Q_D(QPdfBaseEngine);
    if (d->pen.style() == Qt::NoPen)
        return;
    QBrush b = d->pen.brush();
    Q_ASSERT(b.style() == Qt::SolidPattern && b.isOpaque());

    QColor rgba = b.color();
    *d->currentPage << rgba.redF()
                   << rgba.greenF()
                   << rgba.blueF()
                   << "SCN\n";

    *d->currentPage << d->pen.widthF() << "w ";

    int pdfCapStyle = 0;
    switch(d->pen.capStyle()) {
    case Qt::FlatCap:
        pdfCapStyle = 0;
        break;
    case Qt::SquareCap:
        pdfCapStyle = 2;
        break;
    case Qt::RoundCap:
        pdfCapStyle = 1;
        break;
    default:
        break;
    }
    *d->currentPage << pdfCapStyle << "J ";

    int pdfJoinStyle = 0;
    switch(d->pen.joinStyle()) {
    case Qt::MiterJoin:
        pdfJoinStyle = 0;
        break;
    case Qt::BevelJoin:
        pdfJoinStyle = 2;
        break;
    case Qt::RoundJoin:
        pdfJoinStyle = 1;
        break;
    default:
        break;
    }
    *d->currentPage << pdfJoinStyle << "j ";

    *d->currentPage << QPdf::generateDashes(d->pen) << " 0 d\n";
}

bool QPdfBaseEngine::newPage()
{
    setupGraphicsState(DirtyBrush|DirtyPen|DirtyClipPath);
    return true;
}


int QPdfBaseEngine::metric(QPaintDevice::PaintDeviceMetric metricType) const
{
    Q_D(const QPdfBaseEngine);
    int val;
    QRect r = d->fullPage ? d->paperRect() : d->pageRect();
    switch (metricType) {
    case QPaintDevice::PdmWidth:
        val = r.width();
        break;
    case QPaintDevice::PdmHeight:
        val = r.height();
        break;
    case QPaintDevice::PdmDpiX:
    case QPaintDevice::PdmDpiY:
        val = d->resolution;
        break;
    case QPaintDevice::PdmPhysicalDpiX:
    case QPaintDevice::PdmPhysicalDpiY:
        val = 1200;
        break;
    case QPaintDevice::PdmWidthMM:
        val = qRound(r.width()*25.4/d->resolution);
        break;
    case QPaintDevice::PdmHeightMM:
        val = qRound(r.height()*25.4/d->resolution);
        break;
    case QPaintDevice::PdmNumColors:
        val = INT_MAX;
        break;
    case QPaintDevice::PdmDepth:
        val = 32;
        break;
    default:
        qWarning("QPrinter::metric: Invalid metric command");
        return 0;
    }
    return val;
}

void QPdfBaseEngine::setProperty(PrintEnginePropertyKey key, const QVariant &value)
{
    Q_D(QPdfBaseEngine);
    switch (key) {
    case PPK_CollateCopies:
        d->collate = value.toBool();
        break;
    case PPK_ColorMode:
        d->colorMode = QPrinter::ColorMode(value.toInt());
        break;
    case PPK_Creator:
        d->creator = value.toString();
        break;
    case PPK_DocumentName:
        d->title = value.toString();
        break;
    case PPK_FullPage:
        d->fullPage = value.toBool();
        break;
    case PPK_NumberOfCopies:
        d->copies = value.toInt();
        break;
    case PPK_Orientation:
        d->orientation = QPrinter::Orientation(value.toInt());
        break;
    case PPK_OutputFileName:
        d->outputFileName = value.toString();
        break;
    case PPK_PageOrder:
        d->pageOrder = QPrinter::PageOrder(value.toInt());
        break;
    case PPK_PageSize:
        d->pageSize = QPrinter::PageSize(value.toInt());
        break;
    case PPK_PaperSource:
        d->paperSource = QPrinter::PaperSource(value.toInt());
        break;
    case PPK_PrinterName:
        d->printerName = value.toString();
        break;
    case PPK_PrinterProgram:
        d->printProgram = value.toString();
        break;
    case PPK_Resolution:
        d->resolution = value.toInt();
        break;
    case PPK_SelectionOption:
        d->selectionOption = value.toString();
        break;
    case PPK_FontEmbedding:
        d->embedFonts = value.toBool();
        break;
    case PPK_Duplex:
        d->duplex = value.toBool();
        break;
    case PPK_CupsPageRect:
        d->cupsPageRect = value.toRect();
        break;
    case PPK_CupsPaperRect:
        d->cupsPaperRect = value.toRect();
        break;
    case PPK_CupsOptions:
        d->cupsOptions = value.toStringList();
        break;
    case PPK_CupsStringPageSize:
        d->cupsStringPageSize = value.toString();
        break;
    default:
        break;
    }
}

QVariant QPdfBaseEngine::property(PrintEnginePropertyKey key) const
{
    Q_D(const QPdfBaseEngine);

    QVariant ret;
    switch (key) {
    case PPK_CollateCopies:
        ret = d->collate;
        break;
    case PPK_ColorMode:
        ret = d->colorMode;
        break;
    case PPK_Creator:
        ret = d->creator;
        break;
    case PPK_DocumentName:
        ret = d->title;
        break;
    case PPK_FullPage:
        ret = d->fullPage;
        break;
    case PPK_NumberOfCopies:
#if !defined(QT_NO_CUPS) && !defined(QT_NO_LIBRARY)
        if (QCUPSSupport::isAvailable())
            ret = 1;
        else
#endif
            ret = d->copies;
        break;
    case PPK_Orientation:
        ret = d->orientation;
        break;
    case PPK_OutputFileName:
        ret = d->outputFileName;
        break;
    case PPK_PageOrder:
        ret = d->pageOrder;
        break;
    case PPK_PageSize:
        ret = d->pageSize;
        break;
    case PPK_PaperSource:
        ret = d->paperSource;
        break;
    case PPK_PrinterName:
        ret = d->printerName;
        break;
    case PPK_PrinterProgram:
        ret = d->printProgram;
        break;
    case PPK_Resolution:
        ret = d->resolution;
        break;
    case PPK_SupportedResolutions:
        ret = QList<QVariant>() << 72;
        break;
    case PPK_PaperRect:
        ret = d->paperRect();
        break;
    case PPK_PageRect:
        ret = d->pageRect();
        break;
    case PPK_SelectionOption:
        ret = d->selectionOption;
        break;
    case PPK_FontEmbedding:
        ret = d->embedFonts;
        break;
    case PPK_Duplex:
        ret = d->duplex;
        break;
    case PPK_CupsPageRect:
        ret = d->cupsPageRect;
        break;
    case PPK_CupsPaperRect:
        ret = d->cupsPaperRect;
        break;
    case PPK_CupsOptions:
        ret = d->cupsOptions;
        break;
    case PPK_CupsStringPageSize:
        ret = d->cupsStringPageSize;
        break;
    default:
        break;
    }