Advance KWin Wayland port for Red Bear desktop session

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/recipes/kde/kwin/source/src/utils/orientationsensor.cpp

@@ -6,7 +6,28 @@
 */
 #include "orientationsensor.h"
 
+#include "qorientationreading_compat.h"
+
+#if __has_include(<QOrientationSensor>)
 #include <QOrientationSensor>
+#define KWIN_HAVE_QT_ORIENTATION_SENSOR 1
+#else
+#define KWIN_HAVE_QT_ORIENTATION_SENSOR 0
+class QOrientationSensor : public QObject
+{
+public:
+    using QObject::QObject;
+
+    QOrientationReading *reading() const
+    {
+        return nullptr;
+    }
+
+    void start()
+    {
+    }
+};
+#endif
 
 namespace KWin
 {
@@ -22,6 +43,7 @@ OrientationSensor::~OrientationSensor() = default;
 
 void OrientationSensor::setEnabled(bool enable)
 {
+#if KWIN_HAVE_QT_ORIENTATION_SENSOR
     if (enable) {
         connect(m_sensor.get(), &QOrientationSensor::readingChanged, this, &OrientationSensor::update, Qt::UniqueConnection);
         m_sensor->start();
@@ -29,6 +51,10 @@ void OrientationSensor::setEnabled(bool enable)
         disconnect(m_sensor.get(), &QOrientationSensor::readingChanged, this, &OrientationSensor::update);
         m_reading->setOrientation(QOrientationReading::Undefined);
     }
+#else
+    Q_UNUSED(enable)
+    m_reading->setOrientation(QOrientationReading::Undefined);
+#endif
 }
 
 QOrientationReading *OrientationSensor::reading() const
@@ -38,6 +64,7 @@ QOrientationReading *OrientationSensor::reading() const
 
 void OrientationSensor::update()
 {
+#if KWIN_HAVE_QT_ORIENTATION_SENSOR
     if (auto reading = m_sensor->reading()) {
         if (m_reading->orientation() != reading->orientation()) {
             m_reading->setOrientation(reading->orientation());
@@ -47,6 +74,7 @@ void OrientationSensor::update()
         m_reading->setOrientation(QOrientationReading::Orientation::Undefined);
         Q_EMIT orientationChanged();
     }
+#endif
 }
 
 }

local/recipes/kde/kwin/source/src/utils/qorientationreading_compat.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#if __has_include(<QOrientationReading>)
+#include <QOrientationReading>
+#else
+class QOrientationReading
+{
+public:
+    enum Orientation {
+        TopUp,
+        TopDown,
+        LeftUp,
+        RightUp,
+        FaceUp,
+        FaceDown,
+        Undefined,
+    };
+
+    QOrientationReading() = default;
+
+    Orientation orientation() const
+    {
+        return m_orientation;
+    }
+
+    void setOrientation(Orientation orientation)
+    {
+        m_orientation = orientation;
+    }
+
+private:
+    Orientation m_orientation = Undefined;
+};
+#endif

local/recipes/kde/kwin/source/src/utils/ramfile.cpp

@@ -78,14 +78,18 @@ RamFile::RamFile(const char *name, const void *inData, int size, RamFile::Flags
     m_tmp->unmap(data);
 #endif
 
+#if defined(F_SEAL_SHRINK) && defined(F_SEAL_GROW) && defined(F_SEAL_SEAL) && defined(F_ADD_SEALS)
     int seals = F_SEAL_SHRINK | F_SEAL_GROW | F_SEAL_SEAL;
     if (flags.testFlag(RamFile::Flag::SealWrite)) {
+#if defined(F_SEAL_WRITE)
         seals |= F_SEAL_WRITE;
+#endif
     }
     // This can fail for QTemporaryFile based on the underlying file system.
     if (fcntl(fd(), F_ADD_SEALS, seals) != 0) {
         qCDebug(KWIN_CORE).nospace() << name << ": Failed to seal RamFile: " << strerror(errno);
     }
+#endif
 
     guard.dismiss();
 }
@@ -137,12 +141,16 @@ RamFile::Flags RamFile::effectiveFlags() const
 {
     Flags flags = {};
 
+#if defined(F_GET_SEALS) && defined(F_SEAL_WRITE)
     const int seals = fcntl(fd(), F_GET_SEALS);
     if (seals > 0) {
         if (seals & F_SEAL_WRITE) {
             flags.setFlag(Flag::SealWrite);
         }
     }
+#else
+    flags = m_flags;
+#endif
 
     return flags;
 }