EXIVSIMPLE_API void SetThumbnail(HIMAGE img, const BYTE *buffer, unsigned int size)
{
ImageWrapper *imgWrap = (ImageWrapper*)img;
Exiv2::ExifData& exifData = imgWrap->image->exifData();
Exiv2::ExifThumb exifThumb(exifData);
exifThumb.setJpegThumbnail(buffer, size);
}
void Previewimage::edit(Image *image){
getWidget(); // avoid nullpointer exception
if(widget->isUpdate()){
QImage thumbnail = image->getImage()->scaled(160, 120);
QByteArray ba;
QBuffer buffer(&ba);
buffer.open(QIODevice::WriteOnly);
thumbnail.save(&buffer, "JPG");
if(image->getExifData() == 0) image->setExifData(new Exiv2::ExifData());
Exiv2::ExifThumb exifThumb(*image->getExifData());
exifThumb.erase();
exifThumb.setJpegThumbnail((Exiv2::byte*)ba.constData() ,ba.size());
} else if (widget->isRemove()){
if(image->getExifData() == 0) image->setExifData(new Exiv2::ExifData());
Exiv2::ExifThumb exifThumb(*image->getExifData());
exifThumb.erase();
} else {
}
}
EXIVSIMPLE_API unsigned int GetThumbnail(HIMAGE img, BYTE *buffer, unsigned int size)
{
ImageWrapper *imgWrap = (ImageWrapper*)img;
Exiv2::ExifData& exifData = imgWrap->image->exifData();
Exiv2::ExifThumb exifThumb(exifData);
Exiv2::DataBuf buf = exifThumb.copy();
if (buf.size_ == 0) {
return 0;
}
if (buf.size_ > (long)size) {
return unsigned int(-1);
}
memcpy(buffer, buf.pData_, buf.size_);
return buf.size_;
}
void ExifTools::copyExif(const QString &sourceStr, const QString &destStr)
{
Exiv2::Image::AutoPtr sourceImageData =
Exiv2::ImageFactory::open(QFile::encodeName(sourceStr).data());
sourceImageData->readMetadata();
Exiv2::ExifData exifData = sourceImageData->exifData();
Exiv2::IptcData iptcData = sourceImageData->iptcData();
Exiv2::ExifThumb exifThumb(exifData);
exifThumb.erase();
Exiv2::Image::AutoPtr destImageData =
Exiv2::ImageFactory::open(QFile::encodeName(destStr).data());
destImageData->setExifData(exifData);
destImageData->setIptcData(iptcData);
destImageData->writeMetadata();
}
QPixmap MediaBrowser::iconForImage(const QString & file, const QSize & size)
{
QPixmap cache;
QDir path(QString("%1/%2").arg(AppSettings::cachePath()).arg(CACHE_DIR));
if(!path.exists())
QDir(AppSettings::cachePath()).mkdir(CACHE_DIR);
QString cacheFile = QString("%1/%2/%3-%4x%5")
.arg(AppSettings::cachePath())
.arg(CACHE_DIR)
.arg(MD5::md5sum(file))
.arg(size.width())
.arg(size.height());
//QPixmap orig(file);
//orig = orig.scaled(size,Qt::IgnoreAspectRatio,Qt::SmoothTransformation);
//orig.detach();
//return orig;
bool cacheFileModified = !QFile(cacheFile).exists() || QFileInfo(file).lastModified() >= QFileInfo(cacheFile).lastModified();
//qDebug() << "MediaBrowser::iconForImage: file:"<<file<<", size:"<<size<<", cacheFile: "<<cacheFile<<", cacheModified:"<<cacheFileModified;
if(!QPixmapCache::find(cacheFile,cache) || cacheFileModified)
{
if(QFile(cacheFile).exists() && !cacheFileModified)
{
cache.load(cacheFile);
QPixmapCache::insert(cacheFile,cache);
// qDebug() << "MediaBrowser::iconForImage: file:"<<file<<", size:"<<size<<": hit DISK (loaded scaled from disk cache)";
}
else
{
bool gotThumb = false;
try
{
Exiv2::Image::AutoPtr exiv = Exiv2::ImageFactory::open(file.toStdString());
if(exiv.get() != 0)
{
exiv->readMetadata();
Exiv2::ExifData& exifData = exiv->exifData();
if (exifData.empty())
{
// qDebug() << file << ": No Exif data found in the file";
}
Exiv2::ExifThumb exifThumb(exifData);
std::string thumbExt = exifThumb.extension();
if (thumbExt.empty())
{
// qDebug() << file << ": Image does not contain an Exif thumbnail";
}
else
{
Exiv2::DataBuf buf = exifThumb.copy();
if (buf.size_ != 0)
{
qDebug() << file << ": Attempting to load thumnail (" << exifThumb.mimeType() << ", "
<< buf.size_ << " Bytes)";
QPixmap thumb;
if(!thumb.loadFromData(buf.pData_, buf.size_))
{
qDebug() << file << "QPixmap::fromData() failed";
}
else
{
QString rotateSensor = exifData["Exif.Image.Orientation"].toString().c_str();
int rotationFlag = rotateSensor.toInt();
int rotateDegrees = rotationFlag == 1 ||
rotationFlag == 2 ? 0 :
rotationFlag == 7 ||
rotationFlag == 8 ? -90 :
rotationFlag == 3 ||
rotationFlag == 4 ? -180 :
rotationFlag == 5 ||
rotationFlag == 6 ? -270 :
0;
QTransform t = QTransform().rotate(rotateDegrees);
thumb = thumb.transformed(t);
cache = thumb.scaled(size,Qt::KeepAspectRatio,Qt::SmoothTransformation);
if(abs(rotateDegrees) == 90 || abs(rotateDegrees) == 270)
{
QPixmap centeredCache(size);
centeredCache.fill(Qt::transparent);
int pos = size.width() /2 - cache.width() / 2;
QPainter painter(¢eredCache);
painter.drawPixmap(pos,0,cache);
cache = centeredCache;
qDebug() << file << " * Centered rotated pixmap in frame";
}
cache.save(cacheFile,"PNG");
//qDebug() << "MediaBrowser::iconForImage: file:"<<file<<", image file: caching to:"<<cacheFile<<" for "<<file;
QPixmapCache::insert(cacheFile,cache);
gotThumb = true;
// qDebug() << file << ": Succesfully loaded Exiv thumnail and scaled to size, wrote to: "<<cacheFile;
}
}
}
}
}
catch (Exiv2::AnyError& e)
{
//std::cout << "Caught Exiv2 exception '" << e << "'\n";
//return -1;
gotThumb = false;
}
if(!gotThumb)
{
QPixmap orig(file);
if(orig.isNull())
{
cache = QPixmap();
QPixmapCache::insert(cacheFile,cache);
qDebug() << "MediaBrowser::iconForImage: file:"<<file<<", size:"<<size<<": load INVALID (Can't load original)";
}
else
{
cache = orig.scaled(size,Qt::KeepAspectRatio,Qt::SmoothTransformation);
cache.save(cacheFile,"PNG");
////qDebug() << "MyQFileIconProvider::icon(): image file: caching to:"<<cacheFile<<" for "<<file;
QPixmapCache::insert(cacheFile,cache);
// qDebug() << "MediaBrowser::iconForImage: file:"<<file<<", size:"<<size<<": load GOOD (loaded original and scaled)";
//QApplication::processEvents();
}
}
}
}
else
{
//qDebug() << "MediaBrowser::iconForImage: file:"<<file<<", size:"<<size<<": hit RAM (scaled image already in ram)";
}
//qDebug() << "MediaBrowser::data: iconForImage: file:"<<file<<", cacheKey:"<<cache.cacheKey();
return cache;
}
