QuillImage TiltShift::apply(const QuillImage& image) const
{
if (image.isNull()) {
return image;
}
if (image.isFragment()) {
m_gaussianFilter->setOption(QuillImageFilter::Radius, QVariant(GAUSSIAN_BLUR_RADIUS_TILE));
} else if (image.size() == QSize(170, 170)) {
m_gaussianFilter->setOption(QuillImageFilter::Radius, QVariant(GAUSSIAN_BLUR_RADIUS_THUMBNAIL));
} else {
m_gaussianFilter->setOption(QuillImageFilter::Radius, QVariant(GAUSSIAN_BLUR_RADIUS_PREVIEW));
}
QuillImage blurredImage = m_gaussianFilter->apply(image);
float** mask = maskImage(image);
QImage resultImage(image.size(), QImage::Format_RGB32);
for (int y=0; y<image.height(); y++) {
const QRgb* originalPixelRow = (const QRgb*)image.constScanLine(y);
const QRgb* blurredPixelRow = (const QRgb*)blurredImage.constScanLine(y);
QRgb* resultPixelRow = (QRgb*)resultImage.scanLine(y);
for (int x=0; x<image.width(); x++) {
int red = qRed(originalPixelRow[x]) * mask[x][y] + qRed(blurredPixelRow[x]) * (1 - mask[x][y]);
int blue = qBlue(originalPixelRow[x]) * mask[x][y] + qBlue(blurredPixelRow[x]) * (1 - mask[x][y]);
int green = qGreen(originalPixelRow[x]) * mask[x][y] + qGreen(blurredPixelRow[x]) * (1 - mask[x][y]);
QColor result(red, green, blue);
result.setHsvF(result.hueF(), qMin(SATURATION_FACTOR * result.saturationF(), 1.0), result.valueF());
resultPixelRow[x] = result.rgb();
}
}
for (int i = 0; i < image.size().width(); i ++) {
delete[] mask[i];
}
delete[] mask;
return QuillImage(image, resultImage);
}
QuillImage SaveFilter::apply(const QuillImage &image) const
{
if(image.isNull())
return QuillImage();
// Simple format detection (1. given format 2. suffix)
QString format = priv->fileFormatQt.toLatin1();
if (format.isEmpty())
format = QFileInfo(priv->fileName).suffix().toLatin1();
// Jpeg always uses serial access saving, also for non-tiles,
// to be able to insert EXIF data
format = format.toLower();
if ((format == "jpeg") || (format == "jpg"))
return saveJpeg(image);
// For non-tiles, just save
if (!image.isFragment())
{
bool ok = saveFullImage(image);
if (ok) {
setFileModificationDateTime();
return image;
}
else
return QuillImage();
}
// First execute - prepare target
if (priv->fullImageSize == QSize())
{
priv->fullImageSize = image.fullImageSize();
priv->fullImage = QImage(priv->fullImageSize, QImage::Format_RGB32);
}
QPainter painter(&(priv->fullImage));
painter.setCompositionMode(QPainter::CompositionMode_Source);
painter.drawImage(image.area().topLeft(), image);
priv->tileCount--;
// Target full image has everything necessary, so do the final save.
if (priv->tileCount == 0)
{
bool ok = saveFullImage(priv->fullImage);
if (ok) {
setFileModificationDateTime();
// Return non-empty image to represent success
return image;
}
else
// Return empty image to represent failure
return QuillImage();
}
else
// No actual save was made, return non-empty image to represent success
return image;
}
