1 files changed, 44 insertions, 0 deletions
diff --git a/src/qt/modaloverlay.h b/src/qt/modaloverlay.h
new file mode 100644
index 0000000000..5bf913a3f3
--- /dev/null
+++ b/src/qt/modaloverlay.h
@@ -0,0 +1,44 @@
+// Copyright (c) 2017 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_QT_MODALOVERLAY_H
+#define BITCOIN_QT_MODALOVERLAY_H
+
+#include <QDateTime>
+#include <QWidget>
+
+namespace Ui {
+    class ModalOverlay;
+}
+
+/** Modal overlay to display information about the chain-sync state */
+class ModalOverlay : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit ModalOverlay(QWidget *parent);
+    ~ModalOverlay();
+
+public Q_SLOTS:
+    void tipUpdate(int count, const QDateTime& blockDate, double nVerificationProgress);
+    void setKnownBestHeight(int count);
+
+    // will show or hide the modal layer
+    void showHide(bool hide = false, bool userRequested = false);
+    void closeClicked();
+
+protected:
+    bool eventFilter(QObject * obj, QEvent * ev);
+    bool event(QEvent* ev);
+
+private:
+    Ui::ModalOverlay *ui;
+    int bestBlockHeight; //best known height (based on the headers)
+    QVector<QPair<qint64, double> > blockProcessTime;
+    bool layerIsVisible;
+    bool userClosed;
+};
+
+#endif // BITCOIN_QT_MODALOVERLAY_H