C++ KisFixedPaintDeviceSP::pixelSize方法代码示例

void HairyBrush::fromDabWithDensity(KisFixedPaintDeviceSP dab, qreal density)
{
    int width = dab->bounds().width();
    int height = dab->bounds().height(); 

    int centerX = width * 0.5;
    int centerY = height * 0.5;
   
    // make mask 
    Bristle * bristle = 0;
    qreal alpha;
    
    quint8 * dabPointer = dab->data();
    quint8 pixelSize = dab->pixelSize();
    const KoColorSpace * cs = dab->colorSpace();
    KoColor bristleColor(cs);
    
    srand48(12345678);
    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {
            alpha =  cs->opacityF(dabPointer);
            if (alpha != 0.0){
                if (density == 1.0 || drand48() <= density){
                    memcpy(bristleColor.data(), dabPointer, pixelSize);
                
                    bristle = new Bristle(x - centerX, y - centerY, alpha); // using value from image as length of bristle    
                    bristle->setColor(bristleColor);
                
                    m_bristles.append(bristle);
                }
            } 
            dabPointer += pixelSize;
        }
    }
}

void KisPressureSharpnessOption::applyThreshold(KisFixedPaintDeviceSP dab)
{
    if (!isChecked()) return;
    const KoColorSpace * cs = dab->colorSpace();

    // Set all alpha > opaque/2 to opaque, the rest to transparent.
    // XXX: Using 4/10 as the 1x1 circle brush paints nothing with 0.5.
    quint8* dabPointer = dab->data();
    QRect rc = dab->bounds();

    int pixelSize = dab->pixelSize();
    int pixelCount = rc.width() * rc.height();

    for (int i = 0; i < pixelCount; i++) {
        quint8 alpha = cs->opacityU8(dabPointer);

        if (alpha < (m_threshold * OPACITY_OPAQUE_U8) / 100) {
            cs->setOpacity(dabPointer, OPACITY_TRANSPARENT_U8, 1);
        }
        else {
            cs->setOpacity(dabPointer, OPACITY_OPAQUE_U8, 1);
        }

        dabPointer += pixelSize;
    }
}

void KisFixedPaintDeviceTest::testColorSpaceConversion()
{
    QImage image(QString(FILES_DATA_DIR) + QDir::separator() + "tile.png");
    const KoColorSpace* srcCs = KoColorSpaceRegistry::instance()->rgb8();
    const KoColorSpace* dstCs = KoColorSpaceRegistry::instance()->lab16();
    KisFixedPaintDeviceSP dev = new KisFixedPaintDevice(srcCs);
    dev->convertFromQImage(image, 0);

    dev->convertTo(dstCs);

    QVERIFY(dev->bounds() == QRect(0, 0, image.width(), image.height()));
    QVERIFY(dev->pixelSize() == dstCs->pixelSize());
    QVERIFY(*dev->colorSpace() == *dstCs);

}

void KisFixedPaintDeviceTest::testCreation()
{
    const KoColorSpace * cs = KoColorSpaceRegistry::instance()->rgb8();
    KisFixedPaintDeviceSP dev = new KisFixedPaintDevice(cs);

    dev = new KisFixedPaintDevice(cs);
    QVERIFY(dev->bounds() == QRect());
    QVERIFY(*dev->colorSpace() == *cs);
    QVERIFY(dev->pixelSize() == cs->pixelSize());

    dev->setRect(QRect(0, 0, 100, 100));
    QVERIFY(dev->bounds() == QRect(0, 0, 100, 100));
    dev->initialize();
    QVERIFY(dev->data() != 0);

    quint8* data = dev->data();
    for (uint i = 0; i < 100 * 100 * cs->pixelSize(); ++i) {
        QVERIFY(data[i] == 0);
    }

}

void KisAutoBrush::generateMaskAndApplyMaskOrCreateDab(KisFixedPaintDeviceSP dst,
        KisBrush::ColoringInformation* coloringInformation,
        double scaleX, double scaleY, double angle,
        const KisPaintInformation& info,
        double subPixelX , double subPixelY, qreal softnessFactor) const
{
    Q_UNUSED(info);

    // Generate the paint device from the mask
    const KoColorSpace* cs = dst->colorSpace();
    quint32 pixelSize = cs->pixelSize();

    // mask dimension methods already includes KisBrush::angle()
    int dstWidth = maskWidth(scaleX, angle, subPixelX, subPixelY, info);
    int dstHeight = maskHeight(scaleY, angle, subPixelX, subPixelY, info);
    QPointF hotSpot = this->hotSpot(scaleX, scaleY, angle, info);

    // mask size and hotSpot function take the KisBrush rotation into account
    angle += KisBrush::angle();

    // if there's coloring information, we merely change the alpha: in that case,
    // the dab should be big enough!
    if (coloringInformation) {

        // old bounds
        QRect oldBounds = dst->bounds();

        // new bounds. we don't care if there is some extra memory occcupied.
        dst->setRect(QRect(0, 0, dstWidth, dstHeight));

        if (dstWidth * dstHeight <= oldBounds.width() * oldBounds.height()) {
            // just clear the data in dst,
            memset(dst->data(), OPACITY_TRANSPARENT_U8, dstWidth * dstHeight * dst->pixelSize());
        } else {
            // enlarge the data
            dst->initialize();
        }
    } else {
        if (dst->data() == 0 || dst->bounds().isEmpty()) {
            qWarning() << "Creating a default black dab: no coloring info and no initialized paint device to mask";
            dst->clear(QRect(0, 0, dstWidth, dstHeight));
        }
        Q_ASSERT(dst->bounds().width() >= dstWidth && dst->bounds().height() >= dstHeight);
    }

    quint8* dabPointer = dst->data();

    quint8* color = 0;
    if (coloringInformation) {
        if (dynamic_cast<PlainColoringInformation*>(coloringInformation)) {
            color = const_cast<quint8*>(coloringInformation->color());
        }
    }

    double invScaleX = 1.0 / scaleX;
    double invScaleY = 1.0 / scaleY;

    double centerX = hotSpot.x() - 0.5 + subPixelX;
    double centerY = hotSpot.y() - 0.5 + subPixelY;

    d->shape->setSoftness( softnessFactor );

    if (coloringInformation) {
        if (color && pixelSize == 4) {
            fillPixelOptimized_4bytes(color, dabPointer, dstWidth * dstHeight);
        } else if (color) {
            fillPixelOptimized_general(color, dabPointer, dstWidth * dstHeight, pixelSize);
        } else {
            for (int y = 0; y < dstHeight; y++) {
                for (int x = 0; x < dstWidth; x++) {
                    memcpy(dabPointer, coloringInformation->color(), pixelSize);
                    coloringInformation->nextColumn();
                    dabPointer += pixelSize;
                }
                coloringInformation->nextRow();
            }
        }
    }

    MaskProcessingData data(dst, cs, d->randomness, d->density,
                            centerX, centerY,
                            invScaleX, invScaleY,
                            angle);

    KisBrushMaskApplicatorBase *applicator = d->shape->applicator();
    applicator->initializeData(&data);

    int jobs = d->idealThreadCountCached;
    if(dstHeight > 100 && jobs >= 4) {
        int splitter = dstHeight/jobs;
        QVector<QRect> rects;
        for(int i = 0; i < jobs - 1; i++) {
            rects << QRect(0, i*splitter, dstWidth, splitter);
        }
        rects << QRect(0, (jobs - 1)*splitter, dstWidth, dstHeight - (jobs - 1)*splitter);
        OperatorWrapper wrapper(applicator);
        QtConcurrent::blockingMap(rects, wrapper);
    } else {
        QRect rect(0, 0, dstWidth, dstHeight);
        applicator->process(rect);
//.........这里部分代码省略.........