C++ KisFixedPaintDeviceSP::data方法代码示例

void KisFixedPaintDeviceTest::testFill()
{
    const KoColorSpace * cs = KoColorSpaceRegistry::instance()->rgb8();
    quint8* red = new quint8[cs->pixelSize()];
    memcpy(red, KoColor(Qt::red, cs).data(), cs->pixelSize());
    cs->setOpacity(red, quint8(128), 1);

    KisFixedPaintDeviceSP dev = new KisFixedPaintDevice(cs);
    dev->fill(0, 0, 100, 100, red);

    QVERIFY(dev->bounds() == QRect(0, 0, 100, 100));
    QVERIFY(cs->opacityU8(dev->data()) == 128);
    QVERIFY(memcmp(dev->data(), red, cs->pixelSize()) == 0);
 
    //Compare fill will normal paint device
    dev = new KisFixedPaintDevice(cs);
    dev->setRect(QRect(0, 0, 150, 150));
    dev->initialize();
    dev->fill(50, 50, 50, 50, red);
    
    KisPaintDeviceSP dev2 = new KisPaintDevice(cs);
    dev2->fill(50, 50, 50, 50, red);
    
    QImage image = dev->convertToQImage(0);
    QImage checkImage = dev2->convertToQImage(0, 0, 0, 150, 150);
    QPoint errpoint;

    if (!TestUtil::compareQImages(errpoint, image, checkImage)) {
        image.save("kis_fixed_paint_device_filled_result.png");
        checkImage.save("kis_fixed_paint_device_filled_result_expected.png");
        QFAIL(QString("Failed to create identical image, first different pixel: %1,%2 \n").arg(errpoint.x()).arg(errpoint.y()).toLatin1());
    } 
    
    delete[] red;
}

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::testClear()
{
    const KoColorSpace * cs = KoColorSpaceRegistry::instance()->rgb8();
    KisFixedPaintDeviceSP dev = new KisFixedPaintDevice(cs);
    dev->clear(QRect(0, 0, 100, 100));
    QVERIFY(dev->bounds() == QRect(0, 0, 100, 100));
    QVERIFY(cs->opacityU8(dev->data() + (50 * 50 * cs->pixelSize())) == OPACITY_TRANSPARENT_U8);
}

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 KisAutoBrushTest::testMaskGeneration()
{
    KisCircleMaskGenerator* circle = new KisCircleMaskGenerator(10, 1.0, 1.0, 1.0, 2, false);
    KisBrushSP a = new KisAutoBrush(circle, 0.0, 0.0);
    const KoColorSpace * cs = KoColorSpaceRegistry::instance()->rgb8();

    KisPaintInformation info(QPointF(100.0, 100.0), 0.5);

    // check masking an existing paint device
    KisFixedPaintDeviceSP fdev = new KisFixedPaintDevice(cs);
    fdev->setRect(QRect(0, 0, 100, 100));
    fdev->initialize();
    cs->setOpacity(fdev->data(), OPACITY_OPAQUE_U8, 100 * 100);

    QPoint errpoint;
    QImage result(QString(FILES_DATA_DIR) + QDir::separator() + "result_autobrush_1.png");
    QImage image = fdev->convertToQImage(0);

    if (!TestUtil::compareQImages(errpoint, image, result)) {
        image.save("kis_autobrush_test_1.png");
        QFAIL(QString("Failed to create identical image, first different pixel: %1,%2 \n").arg(errpoint.x()).arg(errpoint.y()).toLatin1());
    }

    // Check creating a mask dab with a single color
    fdev = new KisFixedPaintDevice(cs);
    a->mask(fdev, KoColor(Qt::black, cs), KisDabShape(), info);

    result = QImage(QString(FILES_DATA_DIR) + QDir::separator() + "result_autobrush_3.png");
    image = fdev->convertToQImage(0);
    if (!TestUtil::compareQImages(errpoint, image, result)) {
        image.save("kis_autobrush_test_3.png");
        QFAIL(QString("Failed to create identical image, first different pixel: %1,%2 \n").arg(errpoint.x()).arg(errpoint.y()).toLatin1());
    }

    // Check creating a mask dab with a color taken from a paint device
    KoColor red(Qt::red, cs);
    cs->setOpacity(red.data(), quint8(128), 1);
    KisPaintDeviceSP dev = new KisPaintDevice(cs);
    dev->fill(0, 0, 100, 100, red.data());

    fdev = new KisFixedPaintDevice(cs);
    a->mask(fdev, dev, KisDabShape(), info);

    result = QImage(QString(FILES_DATA_DIR) + QDir::separator() + "result_autobrush_4.png");
    image = fdev->convertToQImage(0);
    if (!TestUtil::compareQImages(errpoint, image, result)) {
        image.save("kis_autobrush_test_4.png");
        QFAIL(QString("Failed to create identical image, first different pixel: %1,%2 \n").arg(errpoint.x()).arg(errpoint.y()).toLatin1());
    }

}

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.........

qreal KisFilterOp::paintAt(const KisPaintInformation& info)
{
    if (!painter()) {
        return 1.0;
    }

    if (!m_filter) {
        return 1.0;
    }

    if (!source()) {
        return 1.0;
    }

    KisBrushSP brush = m_brush;;
    if (!brush) return 1.0;

    if (! brush->canPaintFor(info))
        return 1.0;

    qreal scale = KisPaintOp::scaleForPressure(m_sizeOption.apply(info));
    if ((scale * brush->width()) <= 0.01 || (scale * brush->height()) <= 0.01) return spacing(scale);

    setCurrentScale(scale);
    
    QPointF hotSpot = brush->hotSpot(scale, scale);
    QPointF pt = info.pos() - hotSpot;


    // Split the coordinates into integer plus fractional parts. The integer
    // is where the dab will be positioned and the fractional part determines
    // the sub-pixel positioning.
    qint32 x;
    qreal xFraction;
    qint32 y;
    qreal yFraction;

    splitCoordinate(pt.x(), &x, &xFraction);
    splitCoordinate(pt.y(), &y, &yFraction);

    qint32 maskWidth = brush->maskWidth(scale, 0.0);
    qint32 maskHeight = brush->maskHeight(scale, 0.0);

    // Filter the paint device
    m_filter->process(KisConstProcessingInformation(source(), QPoint(x, y)),
                    KisProcessingInformation(m_tmpDevice, QPoint(0, 0)),
                    QSize(maskWidth, maskHeight),
                    m_filterConfiguration, 0);

    // Apply the mask on the paint device (filter before mask because edge pixels may be important)

    KisFixedPaintDeviceSP fixedDab = new KisFixedPaintDevice(m_tmpDevice->colorSpace());
    fixedDab->setRect(m_tmpDevice->extent());
    fixedDab->initialize();

    m_tmpDevice->readBytes(fixedDab->data(), fixedDab->bounds());
    brush->mask(fixedDab, scale, scale, 0.0, info, xFraction, yFraction);
    m_tmpDevice->writeBytes(fixedDab->data(), fixedDab->bounds());

    if (!m_ignoreAlpha) {
        KisHLineIteratorPixel itTmpDev = m_tmpDevice->createHLineIterator(0, 0, maskWidth);
        KisHLineIteratorPixel itSrc = source()->createHLineIterator(x, y, maskWidth);
        const KoColorSpace* cs = m_tmpDevice->colorSpace();
        for (int y = 0; y < maskHeight; ++y) {
            while (!itTmpDev.isDone()) {
                quint8 alphaTmpDev = cs->opacityU8(itTmpDev.rawData());
                quint8 alphaSrc = cs->opacityU8(itSrc.rawData());

                cs->setOpacity(itTmpDev.rawData(), qMin(alphaTmpDev, alphaSrc), 1);
                ++itTmpDev;
                ++itSrc;
            }
            itTmpDev.nextRow();
            itSrc.nextRow();
        }
    }

    // Blit the paint device onto the layer
    QRect dabRect = QRect(0, 0, maskWidth, maskHeight);
    QRect dstRect = QRect(x, y, dabRect.width(), dabRect.height());

    if (dstRect.isNull() || dstRect.isEmpty() || !dstRect.isValid()) return 1.0;

    qint32 sx = dstRect.x() - x;
    qint32 sy = dstRect.y() - y;
    qint32 sw = dstRect.width();
    qint32 sh = dstRect.height();

    painter()->bitBlt(dstRect.x(), dstRect.y(), m_tmpDevice, sx, sy, sw, sh);
    return spacing(scale);
}