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Throttle onRegion*Change on Android

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This commit is contained in:
Marius Petcu
2016-07-02 23:08:38 +03:00
parent 551bada3be
commit aa31793795
1 changed files with 64 additions and 6 deletions
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android/src/main/java/com/mapbox/reactnativemapboxgl/ReactNativeMapboxGLView.java
+64 -6
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@@ -60,18 +60,22 @@ public class ReactNativeMapboxGLView extends RelativeLayout implements
private boolean _enableOnRegionDidChange = false;
private int _paddingTop, _paddingRight, _paddingBottom, _paddingLeft;
private boolean _recentlyChanged = false;
private boolean _willChangeThrottled = false;
private boolean _didChangeThrottled = false;
private Map<String, Annotation> _annotations = new HashMap();
private Map<Long, String> _annotationIdsToName = new HashMap();
private Map<String, MarkerOptions> _markerOptions = new HashMap();
private Map<String, PolylineOptions> _polylineOptions = new HashMap();
private Map<String, PolygonOptions> _polygonOptions = new HashMap();
private android.os.Handler _trackingModeHandler;
private android.os.Handler _handler;
@UiThread
public ReactNativeMapboxGLView(Context context, ReactNativeMapboxGLManager manager) {
super(context);
_trackingModeHandler = new android.os.Handler();
_handler = new android.os.Handler();
_manager = manager;
_mapOptions = MapboxMapOptions.createFromAttributes(context, null);
_mapOptions.zoomGesturesEnabled(true);
@@ -407,7 +411,7 @@ public class ReactNativeMapboxGLView extends RelativeLayout implements
if (_bearingTrackingMode == myBearingTrackingMode) { return; }
_bearingTrackingMode = myBearingTrackingMode;
_trackingModeUpdateScheduled = true;
_trackingModeHandler.post(new TrackingModeChangeRunnable(this));
_handler.post(new TrackingModeChangeRunnable(this));
}
@@ -417,7 +421,7 @@ public class ReactNativeMapboxGLView extends RelativeLayout implements
if (_locationTrackingMode == myLocationTrackingMode) { return; }
_locationTrackingMode = myLocationTrackingMode;
_trackingModeUpdateScheduled = true;
_trackingModeHandler.post(new TrackingModeChangeRunnable(this));
_handler.post(new TrackingModeChangeRunnable(this));
}
WritableMap serializeCurrentRegion() {
@@ -436,19 +440,73 @@ public class ReactNativeMapboxGLView extends RelativeLayout implements
return event;
}
class RegionChangedThrottleRunnable implements Runnable {
ReactNativeMapboxGLView target;
RegionChangedThrottleRunnable(ReactNativeMapboxGLView target) {
this.target = target;
}
@Override
public void run() {
target.flushRegionChangedThrottle(true);
}
}
private void flushRegionChangedThrottle(boolean fireAgain) {
_recentlyChanged = false;
if (_willChangeThrottled) {
emitEvent("onRegionWillChange", serializeCurrentRegion());
}
if (_didChangeThrottled) {
emitEvent("onRegionDidChange", serializeCurrentRegion());
}
if (fireAgain && _didChangeThrottled) {
_recentlyChanged = true;
_handler.postDelayed(new RegionChangedThrottleRunnable(this), 100);
}
_willChangeThrottled = false;
_didChangeThrottled = false;
}
private void onRegionWillChange(boolean animated) {
if (animated) {
flushRegionChangedThrottle(false);
}
if (_recentlyChanged) {
_willChangeThrottled = true;
} else {
emitEvent("onRegionWillChange", serializeCurrentRegion());
}
}
private void onRegionDidChange(boolean animated) {
if (animated) {
flushRegionChangedThrottle(false);
}
if (_recentlyChanged) {
_didChangeThrottled = true;
} else {
emitEvent("onRegionDidChange", serializeCurrentRegion());
_recentlyChanged = true;
_handler.postDelayed(new RegionChangedThrottleRunnable(this), 100);
}
}
@Override
public void onMapChanged(int change) {
switch (change) {
case MapView.REGION_WILL_CHANGE:
case MapView.REGION_WILL_CHANGE_ANIMATED:
if (_enableOnRegionWillChange) {
emitEvent("onRegionWillChange", serializeCurrentRegion()); // TODO: These should be throttled
onRegionWillChange(change == MapView.REGION_WILL_CHANGE_ANIMATED);
}
break;
case MapView.REGION_DID_CHANGE:
case MapView.REGION_DID_CHANGE_ANIMATED:
if (_enableOnRegionDidChange) {
emitEvent("onRegionDidChange", serializeCurrentRegion());
onRegionDidChange(change == MapView.REGION_DID_CHANGE_ANIMATED);
}
break;
case MapView.WILL_START_LOADING_MAP: