C++ DImg::width方法代码示例

void IccTransform::transform(DImg& image, const TransformDescription& description, DImgLoaderObserver* const observer)
{
    const int bytesDepth    = image.bytesDepth();
    const int pixels        = image.width() * image.height();
    // convert ten scanlines in a batch
    const int pixelsPerStep = image.width() * 10;
    uchar* data             = image.bits();

    // see dimgloader.cpp, granularity().
    int granularity         = 1;

    if (observer)
    {
        granularity = (int)((pixels / (20 * 0.9)) / observer->granularity());
    }

    int checkPoint = pixels;

    // it is safe to use the same input and output buffer if the format is the same
    if (description.inputFormat == description.outputFormat)
    {
        for (int p = pixels; p > 0; p -= pixelsPerStep)
        {
            int pixelsThisStep =  qMin(p, pixelsPerStep);
            int size           =  pixelsThisStep * bytesDepth;
            LcmsLock lock;
            dkCmsDoTransform(d->handle, data, data, pixelsThisStep);
            data               += size;

            if (observer && p <= checkPoint)
            {
                checkPoint -= granularity;
                observer->progressInfo(&image, 0.1 + 0.9 * (1.0 - float(p) / float(pixels)));
            }
        }
    }
    else
    {
        QVarLengthArray<uchar> buffer(pixelsPerStep * bytesDepth);

        for (int p = pixels; p > 0; p -= pixelsPerStep)
        {
            int pixelsThisStep  = qMin(p, pixelsPerStep);
            int size            = pixelsThisStep * bytesDepth;
            LcmsLock lock;
            memcpy(buffer.data(), data, size);
            dkCmsDoTransform(d->handle, buffer.data(), data, pixelsThisStep);
            data               += size;

            if (observer && p <= checkPoint)
            {
                checkPoint -= granularity;
                observer->progressInfo(&image, 0.1 + 0.9 * (1.0 - float(p) / float(pixels)));
            }
        }
    }
}

void BorderFilter::pattern(DImg& src, DImg& dest, int borderWidth,
                           const DColor& firstColor, const DColor& secondColor,
                           int firstWidth, int secondWidth)
{
    // Original image with the first solid border around.
    DImg tmp;
    solid(src, tmp, firstColor, firstWidth);

    // Border tiled image using pattern with second solid border around.
    int width, height;

    if (d->settings.orgWidth > d->settings.orgHeight)
    {
        height = tmp.height() + borderWidth * 2;
        width  = (int)(height * d->orgRatio);
    }
    else
    {
        width  = tmp.width() + borderWidth * 2;
        height = (int)(width / d->orgRatio);
    }

    DImg tmp2(width, height, tmp.sixteenBit(), tmp.hasAlpha());
    qCDebug(DIGIKAM_DIMG_LOG) << "Border File:" << d->settings.borderPath;
    DImg border(d->settings.borderPath);

    if (border.isNull())
    {
        return;
    }

    border.convertToDepthOfImage(&tmp2);

    for (int x = 0 ; x < width ; x += border.width())
    {
        for (int y = 0 ; y < height ; y += border.height())
        {
            tmp2.bitBltImage(&border, x, y);
        }
    }

    solid(tmp2, dest, secondColor, secondWidth);

    // Merge both images to one.
    if (d->settings.orgWidth > d->settings.orgHeight)
    {
        dest.bitBltImage(&tmp, (dest.width() - tmp.width()) / 2, borderWidth);
    }
    else
    {
        dest.bitBltImage(&tmp, borderWidth, (dest.height() - tmp.height()) / 2);
    }
}

void BorderFilter::solid2(DImg& src, DImg& dest, const DColor& fg, int borderWidth)
{
    dest = DImg(src.width() + borderWidth * 2, src.height() + borderWidth * 2,
                src.sixteenBit(), src.hasAlpha());
    dest.fill(fg);
    dest.bitBltImage(&src, borderWidth, borderWidth);
}

void LensAutoFixTool::preparePreview()
{
    // Settings information must be get before to disable settings view.
    LensFunContainer settings = d->cameraSelector->settings();
    d->settingsView->assignFilterSettings(settings);
    ImageIface* const iface   = d->previewWidget->imageIface();
    DImg preview              = iface->preview();

    if (d->showGrid->isChecked())
    {
        QBitmap pattern(9, 9);
        pattern.clear();
        QPainter p1(&pattern);
        p1.setPen(QPen(Qt::black, 1));
        p1.drawLine(5, 0, 5, 9);
        p1.drawLine(0, 5, 9, 5);
        p1.end();

        QPixmap pix(preview.size());
        pix.fill(Qt::transparent);
        QPainter p2(&pix);
        p2.setPen(QPen(Qt::gray, 1));
        p2.fillRect(0, 0, pix.width(), pix.height(), QBrush(pattern));
        p2.end();
        DImg grid(pix.toImage());

        DColorComposer* const composer            = DColorComposer::getComposer(DColorComposer::PorterDuffNone);
        DColorComposer::MultiplicationFlags flags = DColorComposer::NoMultiplication;

        // Do alpha blending of template on dest image
        preview.bitBlendImage(composer, &grid, 0, 0, preview.width(), preview.height(), 0, 0, flags);
    }

    setFilter(new LensFunFilter(&preview, this, settings));
}

void ContentAwareResizeTool::prepareEffect()
{
    if (d->prevW  != d->wInput->value()  || d->prevH  != d->hInput->value() ||
        d->prevWP != d->wpInput->value() || d->prevHP != d->hpInput->value())
    {
        slotValuesChanged();
    }

    disableSettings();

    ImageIface* iface = d->previewWidget->imageIface();
    int w             = iface->previewWidth();
    int h             = iface->previewHeight();
    DImg imTemp       = iface->getOriginalImg()->smoothScale(w, h, Qt::KeepAspectRatio);
    int new_w         = (int)(w*d->wpInput->value()/100.0);
    int new_h         = (int)(h*d->hpInput->value()/100.0);

    if (d->mixedRescaleInput->value()<100.0) // mixed rescale
    {
        double stdRescaleP = (100.0 - d->mixedRescaleInput->value()) / 100.0;
        int diff_w         = (int)(stdRescaleP * (w - new_w));
        int diff_h         = (int)(stdRescaleP * (h - new_h));

        imTemp.resize(imTemp.width() - diff_w, imTemp.height() - diff_h);
    }

    QImage mask;

    if (d->weightMaskBox->isChecked())
    {
        mask = d->previewWidget->getMask();
    }

    contentAwareResizeCore(&imTemp, new_w, new_h, mask);
}

void ShearTool::setPreviewImage()
{
    ImageIface* const iface = d->previewWidget->imageIface();
    int w                   = iface->previewSize().width();
    int h                   = iface->previewSize().height();
    DImg imTemp             = filter()->getTargetImage().smoothScale(w, h, Qt::KeepAspectRatio);
    DImg imDest( w, h, filter()->getTargetImage().sixteenBit(), filter()->getTargetImage().hasAlpha() );

    imDest.fill( DColor(d->previewWidget->palette().color(QPalette::Background).rgb(),
                        filter()->getTargetImage().sixteenBit()) );
    imDest.bitBltImage(&imTemp, (w-imTemp.width())/2, (h-imTemp.height())/2);

    iface->setPreview(imDest.smoothScale(iface->previewSize()));

    d->previewWidget->updatePreview();

    ShearFilter* const tool = dynamic_cast<ShearFilter*>(filter());

    if (tool)
    {
        QSize newSize = tool->getNewSize();
        QString temp;
        d->newWidthLabel->setText(temp.setNum( newSize.width())   + i18n(" px") );
        d->newHeightLabel->setText(temp.setNum( newSize.height()) + i18n(" px") );
    }
}

bool UndoCache::putData(int level, const DImg& img) const
{
    QFile file(d->cacheFile(level));
    KDiskFreeSpaceInfo info = KDiskFreeSpaceInfo::freeSpaceInfo(d->cacheDir);
    
    unsigned long fspace = (unsigned long)(info.available()/1024.0/1024.0);
    kDebug() << "Free space available in Editor cache [" << d->cacheDir << "] in Mbytes: " << fspace;
    
    if (file.exists() || 
        !file.open(QIODevice::WriteOnly) || 
        fspace < 1024) // Check if free space is over 1 Gb to put data in cache. 
    {
        return false;
    }

    QDataStream ds(&file);
    ds << img.width();
    ds << img.height();
    ds << img.sixteenBit();
    ds << img.hasAlpha();

    QByteArray ba((const char*)img.bits(), img.numBytes());
    ds << ba;

    file.close();

    d->cachedLevels << level;

    return true;
}

void UndoManager::getSnapshot(int index, DImg* const img) const
{
    DImg data = d->undoCache->getData(index);

    // Pass ownership of buffer. If data is null, img will be null
    img->putImageData(data.width(), data.height(), data.sixteenBit(), data.hasAlpha(), data.bits(), true);
}

void BorderFilter::solid(DImg& src, DImg& dest, const DColor& fg, int borderWidth)
{
    if (d->settings.orgWidth > d->settings.orgHeight)
    {
        int height = src.height() + borderWidth * 2;
        dest       = DImg((int)(height * d->orgRatio), height, src.sixteenBit(), src.hasAlpha());
        dest.fill(fg);
        dest.bitBltImage(&src, (dest.width() - src.width()) / 2, borderWidth);
    }
    else
    {
        int width = src.width() + borderWidth * 2;
        dest      = DImg(width, (int)(width / d->orgRatio), src.sixteenBit(), src.hasAlpha());
        dest.fill(fg);
        dest.bitBltImage(&src, borderWidth, (dest.height() - src.height()) / 2);
    }
}

void BCGFilter::applyBCG(DImg& image)
{
    if (image.isNull())
    {
        return;
    }

    applyBCG(image.bits(), image.width(), image.height(), image.sixteenBit());
}

void ResizeTool::putFinalData()
{
    ImageIface iface(0, 0);
    DImg targetImage = filter()->getTargetImage();
    iface.putOriginalImage(i18n("Resize"),
                           filter()->filterAction(),
                           targetImage.bits(),
                           targetImage.width(), targetImage.height());
}

void RawImport::setPreviewImage()
{
    // Preserve metadata from loaded image, and take post-processed image data
    d->postProcessedImage = d->previewWidget->demosaicedImage().copyMetaData();
    DImg data             = filter()->getTargetImage();
    d->postProcessedImage.putImageData(data.width(), data.height(), data.sixteenBit(), data.hasAlpha(),
                                       data.stripImageData(), false);
    d->previewWidget->setPostProcessedImage(d->postProcessedImage);
    d->settingsBox->setPostProcessedImage(d->postProcessedImage);
    EditorToolIface::editorToolIface()->setToolStopProgress();
    setBusy(false);
}

uchar* ImageIface::Private::previewImageData()
{
    if (previewImage.isNull())
    {
        DImg* im = 0;

        if (previewType == FullImage)
        {
            im = core->getImg();

            if (!im || im->isNull())
            {
                return 0;
            }
        }
        else  // ImageSelection
        {
            im = new DImg(core->getImgSelection());

            if (!im)
            {
                return 0;
            }

            if (im->isNull())
            {
                delete im;
                return 0;
            }

            im->setIccProfile(core->getEmbeddedICC());
        }

        QSize sz(im->width(), im->height());
        sz.scale(constrainWidth, constrainHeight, Qt::KeepAspectRatio);

        previewImage       = im->smoothScale(sz.width(), sz.height());
        previewWidth       = previewImage.width();
        previewHeight      = previewImage.height();

        // only create another copy if needed, in setPreviewImage
        targetPreviewImage = previewImage;

        if (previewType == ImageSelection)
        {
            delete im;
        }
    }

    DImg previewData = previewImage.copyImageData();
    return previewData.stripImageData();
}

void ResizeTool::putPreviewData()
{
    ImageIface* iface = d->previewWidget->imageIface();
    int w             = iface->previewWidth();
    int h             = iface->previewHeight();
    DImg imTemp       = filter()->getTargetImage().smoothScale(w, h, Qt::KeepAspectRatio);
    DImg imDest(w, h, filter()->getTargetImage().sixteenBit(), filter()->getTargetImage().hasAlpha());

    QColor background = toolView()->backgroundRole();
    imDest.fill(DColor(background, filter()->getTargetImage().sixteenBit()));
    imDest.bitBltImage(&imTemp, (w-imTemp.width())/2, (h-imTemp.height())/2);

    iface->putPreviewImage((imDest.smoothScale(iface->previewWidth(), iface->previewHeight())).bits());
    d->previewWidget->updatePreview();
}

void BorderFilter::pattern2(DImg& src, DImg& dest, int borderWidth,
                            const DColor& firstColor, const DColor& secondColor,
                            int firstWidth, int secondWidth)
{
    // Border tile.

    int w = d->settings.orgWidth + borderWidth * 2;
    int h = d->settings.orgHeight + borderWidth * 2;

    qCDebug(DIGIKAM_DIMG_LOG) << "Border File:" << d->settings.borderPath;
    DImg border(d->settings.borderPath);

    if (border.isNull())
    {
        return;
    }

    DImg borderImg(w, h, src.sixteenBit(), src.hasAlpha());
    border.convertToDepthOfImage(&borderImg);

    for (int x = 0 ; x < w ; x += border.width())
    {
        for (int y = 0 ; y < h ; y += border.height())
        {
            borderImg.bitBltImage(&border, x, y);
        }
    }

    // First line around the pattern tile.
    DImg tmp = borderImg.smoothScale(src.width() + borderWidth * 2,
                                     src.height() + borderWidth * 2);

    solid2(tmp, dest, firstColor, firstWidth);

    // Second line around original image.
    tmp.reset();
    solid2(src, tmp, secondColor, secondWidth);

    // Copy original image.
    dest.bitBltImage(&tmp, borderWidth, borderWidth);
}