1 files changed, 43 insertions, 0 deletions
diff --git a/src/pinentry/keyboardfocusindication.cpp b/src/pinentry/keyboardfocusindication.cpp
new file mode 100644
index 00000000..d783d981
--- /dev/null
+++ b/src/pinentry/keyboardfocusindication.cpp
@@ -0,0 +1,43 @@
+/* keyboardfocusindication.cpp - Helper for extended keyboard focus indication.
+ * Copyright (C) 2022 g10 Code GmbH
+ *
+ * Software engineering by Ingo Klöcker <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include "keyboardfocusindication.h"
+
+#include "focusframe.h"
+
+#include <QApplication>
+
+KeyboardFocusIndication::KeyboardFocusIndication(QObject *parent)
+    : QObject{parent}
+{
+    connect(qApp, &QApplication::focusChanged, this, &KeyboardFocusIndication::updateFocusFrame);
+}
+
+void KeyboardFocusIndication::updateFocusFrame(QWidget *, QWidget *focusWidget)
+{
+    if (focusWidget && focusWidget->inherits("QLabel") && focusWidget->window()->testAttribute(Qt::WA_KeyboardFocusChange)) {
+        if (!focusFrame) {
+            focusFrame = new FocusFrame{focusWidget};
+        }
+        focusFrame->setWidget(focusWidget);
+    } else if (focusFrame) {
+        focusFrame->setWidget(nullptr);
+    }
+}