void ImagePreviewItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
Q_D(GraphicsDImgItem);
QRect drawRect = option->exposedRect.intersected(boundingRect()).toAlignedRect();
QRect pixSourceRect;
QPixmap pix;
QSize completeSize = boundingRect().size().toSize();
/* For high resolution ("retina") displays, Mac OS X / Qt
report only half of the physical resolution in terms of
pixels, i.e. every logical pixels corresponds to 2x2
physical pixels. However, UI elements and fonts are
nevertheless rendered at full resolution, and pixmaps
as well, provided their resolution is high enough (that
is, higher than the reported, logical resolution).
To work around this, we render the photos not a logical
resolution, but with the photo's full resolution, but
at the screen's aspect ratio. When we later draw this
high resolution bitmap, it is up to Qt to scale the
photo to the true physical resolution. The ratio
computed below is the ratio between the photo and
screen resolutions, or equivalently the factor by which
we need to increase the pixel size of the rendered
pixmap.
*/
#ifdef USE_QT_SCALING
double xratio = double(d->image.width()) / completeSize.width();
double yratio = double(d->image.height()) / completeSize.height();
double ratio = qMax(qMin(xratio, yratio), 1.0);
#else
double ratio = 1.0;
#endif
QRect scaledDrawRect = QRectF(ratio*drawRect.x(), ratio*drawRect.y(),
ratio*drawRect.width(), ratio*drawRect.height()).toRect();
// scale "as if" scaling to whole image, but clip output to our exposed region
QSize scaledCompleteSize = QSizeF(ratio*completeSize.width(), ratio*completeSize.height()).toSize();
DImg scaledImage = d->image.smoothScaleClipped(scaledCompleteSize.width(), scaledCompleteSize.height(),
scaledDrawRect.x(), scaledDrawRect.y(),
scaledDrawRect.width(), scaledDrawRect.height());
if (d->cachedPixmaps.find(scaledDrawRect, &pix, &pixSourceRect))
{
if (pixSourceRect.isNull())
{
painter->drawPixmap(drawRect, pix);
}
else
{
painter->drawPixmap(drawRect, pix, pixSourceRect);
}
}
else
{
// TODO: factoring ICC settings code using ImageIface/EditorCore methods.
// Apply CM settings.
bool doSoftProofing = EditorCore::defaultInstance()->softProofingEnabled();
ICCSettingsContainer iccSettings = EditorCore::defaultInstance()->getICCSettings();
if (iccSettings.enableCM && (iccSettings.useManagedView || doSoftProofing))
{
IccManager manager(scaledImage);
IccTransform monitorICCtrans;
if (doSoftProofing)
{
monitorICCtrans = manager.displaySoftProofingTransform(iccSettings.defaultProofProfile, widget);
}
else
{
monitorICCtrans = manager.displayTransform(widget);
}
pix = scaledImage.convertToPixmap(monitorICCtrans);
}
else
{
pix = scaledImage.convertToPixmap();
}
d->cachedPixmaps.insert(scaledDrawRect, pix);
painter->drawPixmap(drawRect, pix);
}
// Show the Over/Under exposure pixels indicators
ExposureSettingsContainer* const expoSettings = EditorCore::defaultInstance()->getExposureSettings();
if (expoSettings)
{
if (expoSettings->underExposureIndicator || expoSettings->overExposureIndicator)
{
QImage pureColorMask = scaledImage.pureColorMask(expoSettings);
QPixmap pixMask = QPixmap::fromImage(pureColorMask);
painter->drawPixmap(drawRect, pixMask);
}
}
}
void ImageRegionItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
Q_D(GraphicsDImgItem);
d_ptr->drawRect = option->exposedRect.intersected(boundingRect()).toAlignedRect();
QRect pixSourceRect;
QPixmap pix;
QSize completeSize = boundingRect().size().toSize();
// scale "as if" scaling to whole image, but clip output to our exposed region
DImg scaledImage = d->image.smoothScaleClipped(completeSize.width(), completeSize.height(),
d_ptr->drawRect.x(), d_ptr->drawRect.y(),
d_ptr->drawRect.width(), d_ptr->drawRect.height());
if (d->cachedPixmaps.find(d_ptr->drawRect, &pix, &pixSourceRect))
{
if (pixSourceRect.isNull())
{
painter->drawPixmap(d_ptr->drawRect.topLeft(), pix);
}
else
{
painter->drawPixmap(d_ptr->drawRect.topLeft(), pix, pixSourceRect);
}
}
else
{
// TODO: factoring ICC settings code using ImageIface/EditorCore methods.
// Apply CM settings.
bool doSoftProofing = EditorCore::defaultInstance()->softProofingEnabled();
ICCSettingsContainer iccSettings = EditorCore::defaultInstance()->getICCSettings();
if (iccSettings.enableCM && (iccSettings.useManagedView || doSoftProofing))
{
IccManager manager(scaledImage);
IccTransform monitorICCtrans;
if (doSoftProofing)
{
monitorICCtrans = manager.displaySoftProofingTransform(iccSettings.defaultProofProfile, widget);
}
else
{
monitorICCtrans = manager.displayTransform(widget);
}
pix = scaledImage.convertToPixmap(monitorICCtrans);
}
else
{
pix = scaledImage.convertToPixmap();
}
d->cachedPixmaps.insert(d_ptr->drawRect, pix);
painter->drawPixmap(d_ptr->drawRect.topLeft(), pix);
}
paintExtraData(painter);
// Show the Over/Under exposure pixels indicators
ExposureSettingsContainer* const expoSettings = EditorCore::defaultInstance()->getExposureSettings();
if (expoSettings)
{
if (expoSettings->underExposureIndicator || expoSettings->overExposureIndicator)
{
QImage pureColorMask = scaledImage.pureColorMask(expoSettings);
QPixmap pixMask = QPixmap::fromImage(pureColorMask);
painter->drawPixmap(d_ptr->drawRect.topLeft(), pixMask);
}
}
}