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| author | Liang Qi <liang.qi@qt.io> | 2016-09-17 22:55:17 +0200 |
|---|---|---|
| committer | Liang Qi <liang.qi@qt.io> | 2016-09-17 22:55:17 +0200 |
| commit | ecd018fe2ee4508e094f631d882ecc1360abec01 (patch) | |
| tree | 9b1a8f00e0d6eca0f51768d7af4018f7af0187f8 /src/plugins/sensors/ios/iosgyroscope.mm | |
| parent | 62ec986855e3b3c9fda54a09ca83ae5039663c9c (diff) | |
| parent | 724008411c16aaf8fa25c09745e20d0d47d65721 (diff) | |
| download | qtsensors-ecd018fe2ee4508e094f631d882ecc1360abec01.tar.gz | |
Merge remote-tracking branch 'origin/5.6' into 5.7
Change-Id: I14345192d06a8a0ac9000feab6daea0f11b41f72
Diffstat (limited to 'src/plugins/sensors/ios/iosgyroscope.mm')
| -rw-r--r-- | src/plugins/sensors/ios/iosgyroscope.mm | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/plugins/sensors/ios/iosgyroscope.mm b/src/plugins/sensors/ios/iosgyroscope.mm index fc9b616..19e65e5 100644 --- a/src/plugins/sensors/ios/iosgyroscope.mm +++ b/src/plugins/sensors/ios/iosgyroscope.mm @@ -44,6 +44,8 @@ char const * const IOSGyroscope::id("ios.gyroscope"); QT_BEGIN_NAMESPACE +int IOSGyroscope::s_startCount = 0; + IOSGyroscope::IOSGyroscope(QSensor *sensor) : QSensorBackend(sensor) , m_motionManager([QIOSMotionManager sharedManager]) @@ -56,16 +58,24 @@ IOSGyroscope::IOSGyroscope(QSensor *sensor) void IOSGyroscope::start() { + if (m_timer != 0) + return; + int hz = sensor()->dataRate(); m_timer = startTimer(1000 / (hz == 0 ? 60 : hz)); - [m_motionManager startGyroUpdates]; + if (++s_startCount == 1) + [m_motionManager startGyroUpdates]; } void IOSGyroscope::stop() { - [m_motionManager stopGyroUpdates]; + if (m_timer == 0) + return; + killTimer(m_timer); m_timer = 0; + if (--s_startCount == 0) + [m_motionManager stopGyroUpdates]; } void IOSGyroscope::timerEvent(QTimerEvent *) |