C++ KisPaintDeviceSP::pixel方法代码示例

void KisPaintDeviceTest::testGeometry()
{
    const KoColorSpace * cs = KoColorSpaceRegistry::instance()->rgb8();
    KisPaintDeviceSP dev = new KisPaintDevice(cs);

    quint8* pixel = new quint8[cs->pixelSize()];
    cs->fromQColor(Qt::white, pixel);
    dev->fill(0, 0, 512, 512, pixel);

    QCOMPARE(dev->exactBounds(), QRect(0, 0, 512, 512));
    QCOMPARE(dev->extent(), QRect(0, 0, 512, 512));

    dev->move(10, 10);

    QCOMPARE(dev->exactBounds(), QRect(10, 10, 512, 512));
    QCOMPARE(dev->extent(), QRect(10, 10, 512, 512));

    dev->crop(50, 50, 50, 50);
    QCOMPARE(dev->exactBounds(), QRect(50, 50, 50, 50));
    QCOMPARE(dev->extent(), QRect(10, 10, 128, 128));

    QColor c;

    dev->clear(QRect(50, 50, 50, 50));
    dev->pixel(80, 80, &c);
    QVERIFY(c.alpha() == OPACITY_TRANSPARENT_U8);

    dev->fill(0, 0, 512, 512, pixel);
    dev->pixel(80, 80, &c);
    QVERIFY(c == Qt::white);
    QVERIFY(c.alpha() == OPACITY_OPAQUE_U8);

    dev->clear();
    dev->pixel(80, 80, &c);
    QVERIFY(c.alpha() == OPACITY_TRANSPARENT_U8);

    QVERIFY(dev->extent().isEmpty());
    QVERIFY(dev->exactBounds().isEmpty());

}

void KisTransactionTest::testRedo()
{
    KisSurrogateUndoAdapter undoAdapter;

    const KoColorSpace * cs = KoColorSpaceRegistry::instance()->rgb8();
    KisPaintDeviceSP dev = new KisPaintDevice(cs);

    quint8* pixel = new quint8[cs->pixelSize()];
    cs->fromQColor(Qt::white, pixel);
    dev->fill(0, 0, 512, 512, pixel);

    cs->fromQColor(Qt::black, pixel);
    dev->fill(512, 0, 512, 512, pixel);

    QColor c1, c2;
    dev->pixel(5, 5, &c1);
    dev->pixel(517, 5, &c2);

    QVERIFY(c1 == Qt::white);
    QVERIFY(c2 == Qt::black);

    KisTransaction transaction(kundo2_noi18n("mirror"), dev, 0);
    KisTransformWorker::mirrorX(dev);
    transaction.commit(&undoAdapter);

    dev->pixel(5, 5, &c1);
    dev->pixel(517, 5, &c2);

    QVERIFY(c1 == Qt::black);
    QVERIFY(c2 == Qt::white);


    undoAdapter.undo();

    dev->pixel(5, 5, &c1);
    dev->pixel(517, 5, &c2);

    QVERIFY(c1 == Qt::white);
    QVERIFY(c2 == Qt::black);

    undoAdapter.redo();

    dev->pixel(5, 5, &c1);
    dev->pixel(517, 5, &c2);

    QVERIFY(c1 == Qt::black);
    QVERIFY(c2 == Qt::white);
}

    bool pick(KisPaintDeviceSP dev, const QPoint& pos, KoColor *color)
    {
        KIS_ASSERT(dev);
        KoColor pickedColor;
        dev->pixel(pos.x(), pos.y(), &pickedColor);
        pickedColor.convertTo(dev->compositionSourceColorSpace());

        bool validColorPicked =
            pickedColor.opacityU8() != OPACITY_TRANSPARENT_U8;

        if (validColorPicked) {
            pickedColor.setOpacity(OPACITY_OPAQUE_U8);
            *color = pickedColor;
        }

        return validColorPicked;
    }

void KisPaintDeviceTest::testPixel()
{
    const KoColorSpace * cs = KoColorSpaceRegistry::instance()->rgb8();
    KisPaintDeviceSP dev = new KisPaintDevice(cs);

    QColor c = Qt::red;
    quint8 opacity = 125;

    c.setAlpha(opacity);
    dev->setPixel(5, 5, c);

    QColor c2;

    dev->pixel(5, 5, &c2);

    QVERIFY(c == c2);
    QVERIFY(opacity == c2.alpha());

}

void KisPaintDeviceTest::testPlanarReadWrite()
{
    const KoColorSpace * cs = KoColorSpaceRegistry::instance()->rgb8();
    KisPaintDeviceSP dev = new KisPaintDevice(cs);

    quint8* pixel = new quint8[cs->pixelSize()];
    cs->fromQColor(QColor(255, 200, 155, 100), pixel);
    dev->fill(0, 0, 5000, 5000, pixel);
    delete[] pixel;

    QColor c1;
    dev->pixel(5, 5, &c1);

    QVector<quint8*> planes = dev->readPlanarBytes(500, 500, 100, 100);
    QVector<quint8*> swappedPlanes;

    QCOMPARE((int)planes.size(), (int)dev->channelCount());

    for (int i = 0; i < 100*100; i++) {
        // BGRA encoded
        QVERIFY(planes.at(2)[i] == 255);
        QVERIFY(planes.at(1)[i] == 200);
        QVERIFY(planes.at(0)[i] == 155);
        QVERIFY(planes.at(3)[i] == 100);
    }

    for (uint i = 1; i < dev->channelCount() + 1; ++i) {
        swappedPlanes.append(planes[dev->channelCount() - i]);
    }

    dev->writePlanarBytes(swappedPlanes, 0, 0, 100, 100);

    dev->convertToQImage(0, 0, 0, 1000, 1000).save("planar.png");

    dev->pixel(5, 5, &c1);

    QVERIFY(c1.red() == 200);
    QVERIFY(c1.green() == 255);
    QVERIFY(c1.blue() == 100);
    QVERIFY(c1.alpha() == 155);

    dev->pixel(75, 50, &c1);

    QVERIFY(c1.red() == 200);
    QVERIFY(c1.green() == 255);
    QVERIFY(c1.blue() == 100);
    QVERIFY(c1.alpha() == 155);

    // check if one of the planes is Null.
    Q_ASSERT(planes.size() == 4);
    delete planes[2];
    planes[2] = 0;
    dev->writePlanarBytes(planes, 0, 0, 100, 100);
    dev->convertToQImage(0, 0, 0, 1000, 1000).save("planar_noR.png");

    dev->pixel(75, 50, &c1);

    QCOMPARE(c1.red(), 200);
    QCOMPARE(c1.green(), 200);
    QCOMPARE(c1.blue(), 155);
    QCOMPARE(c1.alpha(), 100);

    qDeleteAll(planes);
    swappedPlanes.clear();
}

void KisSmudgeRadiusOption::apply(KisPainter& painter, const KisPaintInformation& info, qreal scale, qreal posx, qreal posy,KisPaintDeviceSP dev) const
{
    double sliderValue = computeValue(info);
    int smudgeRadius = ((sliderValue * scale)*0.5)/100.0;//scale is diameter?


    KoColor color = painter.paintColor();
    if (smudgeRadius == 1) {
        dev->pixel(posx, posy, &color);
        painter.setPaintColor(color);
    } else {

        const KoColorSpace* cs = dev->colorSpace();
        int pixelSize = cs->pixelSize();

        quint8* data = new quint8[pixelSize];
        static quint8** pixels = new quint8*[2];
        qint16* weights = new qint16[2];

        pixels[1] = new quint8[pixelSize];
        pixels[0] = new quint8[pixelSize];

        int loop_increment = 1;
        if(smudgeRadius >= 8)
        {
            loop_increment = (2*smudgeRadius)/16;
        }
        int i = 0;
        int k = 0;
        int j = 0;
        KisRandomConstAccessorSP accessor = dev->createRandomConstAccessorNG(0, 0);
        KisCrossDeviceColorPickerInt colorPicker(painter.device(), color);
        colorPicker.pickColor(posx, posy, color.data());

        for (int y = 0; y <= smudgeRadius; y = y + loop_increment) {
            for (int x = 0; x <= smudgeRadius; x = x + loop_increment) {

                for(j = 0;j < 2;j++)
                {
                    if(j == 1)
                    {
                        y = y*(-1);
                    }
                    for(k = 0;k < 2;k++)
                    {
                        if(k == 1)
                        {
                            x = x*(-1);
                        }
                        accessor->moveTo(posx + x, posy + y);
                        memcpy(pixels[1], accessor->rawDataConst(), pixelSize);
                        if(i == 0)
                        {
                            memcpy(pixels[0],accessor->rawDataConst(),pixelSize);
                        }
                        if (x == 0 && y == 0) {
                            // Because the sum of the weights must be 255,
                            // we cheat a bit, and weigh the center pixel differently in order
                            // to sum to 255 in total
                            // It's -(counts -1), because we'll add the center one implicitly
                            // through that calculation
                            weights[1] = (255 - ((i + 1) * (255 /(i+2) )) );
                        } else {
                            weights[1] = 255 /(i+2);
                        }


                        i++;
                        if (i>smudgeRadius){i=0;}
                        weights[0] = 255 - weights[1];
                        const quint8** cpixels = const_cast<const quint8**>(pixels);
                        cs->mixColorsOp()->mixColors(cpixels, weights,2, data);
                        memcpy(pixels[0],data,pixelSize);


                    }
                    x = x*(-1);
                }
                y = y*(-1);
            }

        }

        KoColor color = KoColor(pixels[0],cs);
        painter.setPaintColor(color);

        for (int l = 0; l < 2; l++){
            delete[] pixels[l];
        }
        // delete[] pixels;
        delete[] data;
    }


}