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| |
| #include "private/qimagereaderwriterhelpers_p.h" |
| |
| #include <qjsonarray.h> |
| #include <qmutex.h> |
| #include <private/qfactoryloader_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace QImageReaderWriterHelpers { |
| |
| #ifndef QT_NO_IMAGEFORMATPLUGIN |
| |
| Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader, |
| (QImageIOHandlerFactoryInterface_iid, QLatin1String("/imageformats"))) |
| Q_GLOBAL_STATIC(QMutex, loaderMutex) |
| |
| static void appendImagePluginFormats(QFactoryLoader *loader, |
| QImageIOPlugin::Capability cap, |
| QList<QByteArray> *result) |
| { |
| typedef QMultiMap<int, QString> PluginKeyMap; |
| typedef PluginKeyMap::const_iterator PluginKeyMapConstIterator; |
| |
| const PluginKeyMap keyMap = loader->keyMap(); |
| const PluginKeyMapConstIterator cend = keyMap.constEnd(); |
| int i = -1; |
| QImageIOPlugin *plugin = 0; |
| result->reserve(result->size() + keyMap.size()); |
| for (PluginKeyMapConstIterator it = keyMap.constBegin(); it != cend; ++it) { |
| if (it.key() != i) { |
| i = it.key(); |
| plugin = qobject_cast<QImageIOPlugin *>(loader->instance(i)); |
| } |
| const QByteArray key = it.value().toLatin1(); |
| if (plugin && (plugin->capabilities(0, key) & cap) != 0) |
| result->append(key); |
| } |
| } |
| |
| static void appendImagePluginMimeTypes(QFactoryLoader *loader, |
| QImageIOPlugin::Capability cap, |
| QList<QByteArray> *result, |
| QList<QByteArray> *resultKeys = nullptr) |
| { |
| QList<QJsonObject> metaDataList = loader->metaData(); |
| |
| const int pluginCount = metaDataList.size(); |
| for (int i = 0; i < pluginCount; ++i) { |
| const QJsonObject metaData = metaDataList.at(i).value(QLatin1String("MetaData")).toObject(); |
| const QJsonArray keys = metaData.value(QLatin1String("Keys")).toArray(); |
| const QJsonArray mimeTypes = metaData.value(QLatin1String("MimeTypes")).toArray(); |
| QImageIOPlugin *plugin = qobject_cast<QImageIOPlugin *>(loader->instance(i)); |
| const int keyCount = keys.size(); |
| for (int k = 0; k < keyCount; ++k) { |
| const QByteArray key = keys.at(k).toString().toLatin1(); |
| if (plugin && (plugin->capabilities(0, key) & cap) != 0) { |
| result->append(mimeTypes.at(k).toString().toLatin1()); |
| if (resultKeys) |
| resultKeys->append(key); |
| } |
| } |
| } |
| } |
| |
| QSharedPointer<QFactoryLoader> pluginLoader() |
| { |
| loaderMutex()->lock(); |
| return QSharedPointer<QFactoryLoader>(loader(), [](QFactoryLoader *) { |
| loaderMutex()->unlock(); |
| }); |
| } |
| |
| static inline QImageIOPlugin::Capability pluginCapability(Capability cap) |
| { |
| return cap == CanRead ? QImageIOPlugin::CanRead : QImageIOPlugin::CanWrite; |
| } |
| |
| #endif // QT_NO_IMAGEFORMATPLUGIN |
| |
| QList<QByteArray> supportedImageFormats(Capability cap) |
| { |
| QList<QByteArray> formats; |
| formats.reserve(_qt_NumFormats); |
| for (int i = 0; i < _qt_NumFormats; ++i) |
| formats << _qt_BuiltInFormats[i].extension; |
| |
| #ifndef QT_NO_IMAGEFORMATPLUGIN |
| appendImagePluginFormats(loader(), pluginCapability(cap), &formats); |
| #endif // QT_NO_IMAGEFORMATPLUGIN |
| |
| std::sort(formats.begin(), formats.end()); |
| formats.erase(std::unique(formats.begin(), formats.end()), formats.end()); |
| return formats; |
| } |
| |
| QList<QByteArray> supportedMimeTypes(Capability cap) |
| { |
| QList<QByteArray> mimeTypes; |
| mimeTypes.reserve(_qt_NumFormats); |
| for (const auto &fmt : _qt_BuiltInFormats) |
| mimeTypes.append(QByteArrayLiteral("image/") + fmt.mimeType); |
| |
| #ifndef QT_NO_IMAGEFORMATPLUGIN |
| appendImagePluginMimeTypes(loader(), pluginCapability(cap), &mimeTypes); |
| #endif // QT_NO_IMAGEFORMATPLUGIN |
| |
| std::sort(mimeTypes.begin(), mimeTypes.end()); |
| mimeTypes.erase(std::unique(mimeTypes.begin(), mimeTypes.end()), mimeTypes.end()); |
| return mimeTypes; |
| } |
| |
| QList<QByteArray> imageFormatsForMimeType(const QByteArray &mimeType, Capability cap) |
| { |
| QList<QByteArray> formats; |
| if (mimeType.startsWith("image/")) { |
| const QByteArray type = mimeType.mid(sizeof("image/") - 1); |
| for (const auto &fmt : _qt_BuiltInFormats) { |
| if (fmt.mimeType == type && !formats.contains(fmt.extension)) |
| formats << fmt.extension; |
| } |
| } |
| |
| #ifndef QT_NO_IMAGEFORMATPLUGIN |
| QList<QByteArray> mimeTypes; |
| QList<QByteArray> keys; |
| appendImagePluginMimeTypes(loader(), pluginCapability(cap), &mimeTypes, &keys); |
| for (int i = 0; i < mimeTypes.size(); ++i) { |
| if (mimeTypes.at(i) == mimeType) { |
| const auto &key = keys.at(i); |
| if (!formats.contains(key)) |
| formats << key; |
| } |
| } |
| #endif // QT_NO_IMAGEFORMATPLUGIN |
| |
| return formats; |
| } |
| |
| } // QImageReaderWriterHelpers |
| |
| QT_END_NAMESPACE |