void
OrientationObserver::Notify(const hal::SensorData& aSensorData)
{
// Sensor will call us on the main thread.
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aSensorData.sensor() == hal::SensorType::SENSOR_ORIENTATION);
InfallibleTArray<float> values = aSensorData.values();
// Azimuth (values[0]): the device's horizontal orientation
// (0 degree is north). It's unused for screen rotation.
float pitch = values[1];
float roll = values[2];
PRUint32 rotation;
if (roll > 45) {
rotation = nsIScreen::ROTATION_90_DEG;
} else if (roll < -45) {
rotation = nsIScreen::ROTATION_270_DEG;
} else if (pitch < -45) {
rotation = nsIScreen::ROTATION_0_DEG;
} else if (pitch > 45) {
rotation = nsIScreen::ROTATION_180_DEG;
} else {
// Don't rotate if neither pitch nor roll exceeds the 45 degree threshold.
return;
}
nsCOMPtr<nsIScreen> screen = GetPrimaryScreen();
if (!screen) {
return;
}
PRUint32 currRotation;
if (NS_FAILED(screen->GetRotation(&currRotation)) ||
rotation == currRotation) {
return;
}
ScreenOrientation orientation;
if (NS_FAILED(ConvertToDomOrientation(rotation, &orientation))) {
return;
}
if ((mAllowedOrientations & orientation) == eScreenOrientation_None) {
// The orientation from sensor is not allowed.
return;
}
PRTime now = PR_Now();
MOZ_ASSERT(now > mLastUpdate);
if (now - mLastUpdate < sMinUpdateInterval) {
return;
}
mLastUpdate = now;
if (NS_FAILED(screen->SetRotation(rotation))) {
// Don't notify dom on rotation failure.
return;
}
}
void
OrientationObserver::Notify(const hal::SensorData& aSensorData)
{
// Sensor will call us on the main thread.
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aSensorData.sensor() == hal::SensorType::SENSOR_ACCELERATION);
nsCOMPtr<nsIScreen> screen = GetPrimaryScreen();
if (!screen) {
return;
}
uint32_t currRotation;
if(NS_FAILED(screen->GetRotation(&currRotation))) {
return;
}
int rotation = mOrientation->OnSensorChanged(aSensorData, static_cast<int>(currRotation));
if (rotation < 0 || rotation == currRotation) {
return;
}
ScreenOrientation orientation;
if (NS_FAILED(ConvertToDomOrientation(rotation, &orientation))) {
return;
}
if ((mAllowedOrientations & orientation) == eScreenOrientation_None) {
// The orientation from sensor is not allowed.
return;
}
if (NS_FAILED(screen->SetRotation(static_cast<uint32_t>(rotation)))) {
// Don't notify dom on rotation failure.
return;
}
}