C++ (Cpp) KisPaintDeviceSP::createThumbnail Examples

Example #1

File: kis_selection_based_layer.cpp Project: crayonink/calligra-2

QImage KisSelectionBasedLayer::createThumbnail(qint32 w, qint32 h)
{
    KisSelectionSP originalSelection = internalSelection();
    KisPaintDeviceSP originalDevice = original();

    return originalDevice && originalSelection ?
           originalDevice->createThumbnail(w, h,
                                           KoColorConversionTransformation::InternalRenderingIntent,
                                           KoColorConversionTransformation::InternalConversionFlags) :
           QImage();
}

Example #2

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

    quint8* whitePixel = new quint8[cs->pixelSize()];
    cs->fromQColor(Qt::white, whitePixel);

    quint8* blackPixel = new quint8[cs->pixelSize()];
    cs->fromQColor(Qt::black, blackPixel);

    dev->fill(0, 0, 512, 512, whitePixel);
    QImage thumb1 = dev->createThumbnail(50, 50);
    QRect exactBounds1 = dev->exactBounds();

    dev->fill(0, 0, 768, 768, blackPixel);
    QImage thumb2 = dev->createThumbnail(50, 50);
    QRect exactBounds2 = dev->exactBounds();

    dev->move(10, 10);
    QImage thumb3 = dev->createThumbnail(50, 50);
    QRect exactBounds3 = dev->exactBounds();

    dev->crop(50, 50, 50, 50);
    QImage thumb4 = dev->createThumbnail(50, 50);
    QRect exactBounds4 = dev->exactBounds();

    QVERIFY(thumb1 != thumb2);
    QVERIFY(thumb2 == thumb3); // Cache miss, but image is the same
    QVERIFY(thumb3 != thumb4);
    QVERIFY(thumb4 != thumb1);

    QCOMPARE(exactBounds1, QRect(0,0,512,512));
    QCOMPARE(exactBounds2, QRect(0,0,768,768));
    QCOMPARE(exactBounds3, QRect(10,10,768,768));
    QCOMPARE(exactBounds4, QRect(50,50,50,50));
}

Example #3

void KisPaintDeviceTest::testThumbnailDeviceWithOffset()
{
    QImage image(QString(FILES_DATA_DIR) + QDir::separator() + "hakonepa.png");
    const KoColorSpace * cs = KoColorSpaceRegistry::instance()->rgb8();
    KisPaintDeviceSP dev = new KisPaintDevice(cs);
    dev->convertFromQImage(image, 0);
    dev->setX(10);
    dev->setY(10);

    QImage thumb = dev->createThumbnail(640,441,QRect(10,10,640,441));

    image.save("oring.png");
    thumb.save("thumb.png");

    QPoint pt;
    QVERIFY(TestUtil::compareQImages(pt, thumb, image));
}

Example #4

void KisPaintDeviceTest::testThumbnail()
{
    QImage image(QString(FILES_DATA_DIR) + QDir::separator() + "hakonepa.png");
    const KoColorSpace * cs = KoColorSpaceRegistry::instance()->rgb8();
    KisPaintDeviceSP dev = new KisPaintDevice(cs);
    dev->convertFromQImage(image, 0);
    {
        KisPaintDeviceSP thumb = dev->createThumbnailDevice(50, 50);
        QRect rc = thumb->exactBounds();
        QVERIFY(rc.width() <= 50);
        QVERIFY(rc.height() <= 50);
    }
    {
        QImage thumb = dev->createThumbnail(50, 50);
        QVERIFY(!thumb.isNull());
        QVERIFY(thumb.width() <= 50);
        QVERIFY(thumb.height() <= 50);
        image.save("kis_paint_device_test_test_thumbnail.png");
    }
}