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| |
| #include "qwindowsinternalmimedata.h" |
| #include "qwindowscontext.h" |
| #include "qwindowsmime.h" |
| #include <QtCore/qdebug.h> |
| /*! |
| \class QWindowsInternalMimeDataBase |
| \brief Base for implementations of QInternalMimeData using a IDataObject COM object. |
| |
| In clipboard handling and Drag and drop, static instances |
| of QInternalMimeData implementations are kept and passed to the client. |
| |
| QInternalMimeData provides virtuals that query the formats and retrieve |
| mime data on demand when the client invokes functions like QMimeData::hasHtml(), |
| QMimeData::html() on the instance returned. Otherwise, expensive |
| construction of a new QMimeData object containing all possible |
| formats would have to be done in each call to mimeData(). |
| |
| The base class introduces new virtuals to obtain and release |
| the instances IDataObject from the clipboard or Drag and Drop and |
| does conversion using QWindowsMime classes. |
| |
| \sa QInternalMimeData, QWindowsMime, QWindowsMimeConverter |
| \internal |
| \ingroup qt-lighthouse-win |
| */ |
| |
| bool QWindowsInternalMimeData::hasFormat_sys(const QString &mime) const |
| { |
| IDataObject *pDataObj = retrieveDataObject(); |
| if (!pDataObj) |
| return false; |
| |
| const QWindowsMimeConverter &mc = QWindowsContext::instance()->mimeConverter(); |
| const bool has = mc.converterToMime(mime, pDataObj) != nullptr; |
| releaseDataObject(pDataObj); |
| qCDebug(lcQpaMime) << __FUNCTION__ << mime << has; |
| return has; |
| } |
| |
| QStringList QWindowsInternalMimeData::formats_sys() const |
| { |
| IDataObject *pDataObj = retrieveDataObject(); |
| if (!pDataObj) |
| return QStringList(); |
| |
| const QWindowsMimeConverter &mc = QWindowsContext::instance()->mimeConverter(); |
| const QStringList fmts = mc.allMimesForFormats(pDataObj); |
| releaseDataObject(pDataObj); |
| qCDebug(lcQpaMime) << __FUNCTION__ << fmts; |
| return fmts; |
| } |
| |
| QVariant QWindowsInternalMimeData::retrieveData_sys(const QString &mimeType, |
| QVariant::Type type) const |
| { |
| IDataObject *pDataObj = retrieveDataObject(); |
| if (!pDataObj) |
| return QVariant(); |
| |
| QVariant result; |
| const QWindowsMimeConverter &mc = QWindowsContext::instance()->mimeConverter(); |
| if (const QWindowsMime *converter = mc.converterToMime(mimeType, pDataObj)) |
| result = converter->convertToMime(mimeType, pDataObj, type); |
| releaseDataObject(pDataObj); |
| if (QWindowsContext::verbose) { |
| qCDebug(lcQpaMime) <<__FUNCTION__ << ' ' << mimeType << ' ' << type |
| << " returns " << result.type() |
| << (result.type() != QVariant::ByteArray ? result.toString() : QStringLiteral("<data>")); |
| } |
| return result; |
| } |