#include "frontends/Clipboard.h"
+#include <QMimeData>
#include <QObject>
+#include <QStringList>
+
+#include <boost/cstdint.hpp>
namespace lyx {
namespace frontend {
class QMacPasteboardMimeGraphics;
+/**
+ * \class CacheMimeData
+ *
+ * This class is used in order to query the clipboard only once on
+ * startup and once each time the contents of the clipboard changes.
+ */
+class CacheMimeData : public QMimeData
+{
+ Q_OBJECT
+public:
+ // LyX calls "on_dataChanged" on startup, so it is not necessary to
+ // query the clipboard here.
+ CacheMimeData()
+ {}
+
+ /// reads the clipboard and updates the cached_formats_
+ void update();
+ /// returns the cached list of formats supported by the object
+ virtual QStringList formats() const { return cached_formats_; }
+ /// reads the clipboard and returns the data
+ QByteArray data(QString const & mimeType) const;
+
+private:
+ /// the cached list of formats supported by the object
+ QStringList cached_formats_;
+};
+
+
/**
* The Qt4 version of the Clipboard.
*/
bool text_clipboard_empty_;
bool has_lyx_contents_;
bool has_graphics_contents_;
+ /// the cached mime data used to describe the information
+ /// that can be stored in the clipboard
+ CacheMimeData cache_;
+ /// checksum for internal clipboard data (used on Mac)
+ boost::uint32_t checksum;
};
QString const lyxMimeType();