1 files changed, 136 insertions, 0 deletions
diff --git a/debian/pinentry-tqt/pinentry-tqt-1.2.1/qt/capslock_unix.cpp b/debian/pinentry-tqt/pinentry-tqt-1.2.1/qt/capslock_unix.cpp
new file mode 100644
index 00000000..320f738b
--- /dev/null
+++ b/debian/pinentry-tqt/pinentry-tqt-1.2.1/qt/capslock_unix.cpp
@@ -0,0 +1,136 @@
+/* capslock_unix.cpp - Helper to check whether Caps Lock is on
+ * Copyright (C) 2021 g10 Code GmbH
+ *
+ * Software engineering by Ingo Klöcker <dev@ingo-kloecker.de>
+ *
+ * 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+
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "capslock.h"
+#include "capslock_p.h"
+
+#ifdef PINENTRY_QT_WAYLAND
+# include <KWayland/Client/connection_thread.h>
+# include <KWayland/Client/keyboard.h>
+# include <KWayland/Client/registry.h>
+# include <KWayland/Client/seat.h>
+#endif
+
+#include <QGuiApplication>
+
+#ifdef PINENTRY_QT_X11
+# include <QX11Info>
+# include <X11/XKBlib.h>
+# undef Status
+#endif
+
+#include <QDebug>
+
+#ifdef PINENTRY_QT_WAYLAND
+using namespace KWayland::Client;
+#endif
+
+#ifdef PINENTRY_QT_WAYLAND
+static bool watchingWayland = false;
+#endif
+
+LockState capsLockState()
+{
+    static bool reportUnsupportedPlatform = true;
+#ifdef PINENTRY_QT_X11
+    if (qApp->platformName() == QLatin1String("xcb")) {
+        unsigned int state;
+        XkbGetIndicatorState(QX11Info::display(), XkbUseCoreKbd, &state);
+        return (state & 0x01) == 1 ? LockState::On : LockState::Off;
+    }
+#endif
+#ifdef PINENTRY_QT_WAYLAND
+    if (qApp->platformName() == QLatin1String("wayland")) {
+        if (!watchingWayland && reportUnsupportedPlatform) {
+            qDebug() << "Use CapsLockWatcher for checking for Caps Lock on Wayland";
+        }
+    } else
+#endif
+    if (reportUnsupportedPlatform) {
+        qWarning() << "Checking for Caps Lock not possible on unsupported platform:" << qApp->platformName();
+    }
+    reportUnsupportedPlatform = false;
+    return LockState::Unknown;
+}
+
+#ifdef PINENTRY_QT_WAYLAND
+void CapsLockWatcher::Private::watchWayland()
+{
+    watchingWayland = true;
+    auto connection = ConnectionThread::fromApplication(q);
+    if (!connection) {
+        qWarning() << "Failed to get connection to Wayland server from QPA";
+        return;
+    }
+    registry = new Registry{q};
+    registry->create(connection);
+    if (!registry->isValid()) {
+        qWarning() << "Failed to create valid KWayland registry";
+        return;
+    }
+    registry->setup();
+
+    connect(registry, &Registry::seatAnnounced,
+            q, [this] (quint32 name, quint32 version) { registry_seatAnnounced(name, version); });
+}
+
+void CapsLockWatcher::Private::registry_seatAnnounced(quint32 name, quint32 version)
+{
+    Q_ASSERT(registry);
+    seat = registry->createSeat(name, version, q);
+    if (!seat->isValid()) {
+        qWarning() << "Failed to create valid KWayland seat";
+        return;
+    }
+
+    connect(seat, &Seat::hasKeyboardChanged,
+            q, [this] (bool hasKeyboard) { seat_hasKeyboardChanged(hasKeyboard); });
+}
+
+void CapsLockWatcher::Private::seat_hasKeyboardChanged(bool hasKeyboard)
+{
+    Q_ASSERT(seat);
+
+    if (!hasKeyboard) {
+        qDebug() << "Seat has no keyboard";
+        return;
+    }
+
+    auto keyboard = seat->createKeyboard(q);
+    if (!keyboard->isValid()) {
+        qWarning() << "Failed to create valid KWayland keyboard";
+        return;
+    }
+
+    connect(keyboard, &Keyboard::modifiersChanged,
+            q, [this] (quint32, quint32, quint32 locked, quint32) { keyboard_modifiersChanged(locked); });
+}
+
+void CapsLockWatcher::Private::keyboard_modifiersChanged(quint32 locked)
+{
+    const bool capsLockIsLocked = (locked & 2u) != 0;
+    qDebug() << "Caps Lock is locked:" << capsLockIsLocked;
+    Q_EMIT q->stateChanged(capsLockIsLocked);
+}
+#endif