Add binding support for sensor readings

Many of the sensors' QML "reading" value properties change with high
frequency. This makes them candidates to benefit from the more
performant bindable support.

This commit adds the bindable support for QML sensor 'reading' classes:
pressure, gyroscope, tap, compass, proximity, orientation, distance,
magnetometer, lid reading, tilt, rotation, humidity, holster, ambient
temperature, light sensor, altimeter, IR proximity, accelerometer,
ambient light, and sensor reading baseclass (timestamp common to all)

In addition to the 'reading' classes, the commit adds bindable support
for QmlSensor::reading, as it's change signal is emitted with high
frequency, on every sensor reading change.

Pick-to: 6.2
Task-number: QTBUG-92513
Task-number: QTBUG-92503
Task-number: QTBUG-92505
Change-Id: I413ddd8a758142b9b93596e55b3bc8c3c2c98252
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>

1 files changed, 12 insertions, 11 deletions

diff --git a/src/sensorsquick/qmlpressuresensor.cpp b/src/sensorsquick/qmlpressuresensor.cpp
index 08a434b0..054f089e 100644
--- a/src/sensorsquick/qmlpressuresensor.cpp
+++ b/src/sensorsquick/qmlpressuresensor.cpp
@@ -117,6 +117,11 @@ qreal QmlPressureReading::pressure() const
     return m_pressure;
 }
 
+QBindable<qreal> QmlPressureReading::bindablePressure() const
+{
+    return &m_pressure;
+}
+
 /*!
     \qmlproperty qreal PressureReading::temperature
     This property holds the pressure sensor's temperature value in degrees Celsius.
@@ -130,6 +135,11 @@ qreal QmlPressureReading::temperature() const
     return m_temperature;
 }
 
+QBindable<qreal> QmlPressureReading::bindableTemperature() const
+{
+    return &m_temperature;
+}
+
 QSensorReading *QmlPressureReading::reading() const
 {
     return m_sensor->reading();
@@ -137,15 +147,6 @@ QSensorReading *QmlPressureReading::reading() const
 
 void QmlPressureReading::readingUpdate()
 {
-    qreal pressure = m_sensor->reading()->pressure();
-    if (m_pressure != pressure) {
-        m_pressure = pressure;
-        Q_EMIT pressureChanged();
-    }
-
-    qreal temperature = m_sensor->reading()->temperature();
-    if (m_temperature != temperature) {
-        m_temperature = temperature;
-        Q_EMIT temperatureChanged();
-    }
+    m_pressure = m_sensor->reading()->pressure();
+    m_temperature = m_sensor->reading()->temperature();
 }