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[iOS] Add turnstile events for Snapshotter #13476

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Dec 6, 2018
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[iOS] Add turnstile events for Snapshotter #13476

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53351c2
Add turnstile events for iOS MGLMapSnapshotter
lloydsheng Nov 29, 2018
13be6d1
remove macos turnstile
lloydsheng Dec 5, 2018
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2 changes: 2 additions & 0 deletions platform/darwin/src/MGLMapSnapshotter.mm
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
#import "MGLAttributionInfo_Private.h"
#import "MGLLoggingConfiguration_Private.h"
#import "MGLRendererConfiguration.h"
#import "MGLMapboxEvents.h"

#if TARGET_OS_IPHONE
#import "UIImage+MGLAdditions.h"
Expand Down Expand Up @@ -74,6 +75,7 @@ - (instancetype)initWithImage:(nullable MGLImage *)image scale:(CGFloat)scale po
_latLngForFn = std::move(latLngForFn);
_scale = scale;
_image = image;
[MGLMapboxEvents pushTurnstileEvent];
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I think this should be in -startWithQueue:completionHandler: - an MGLMapSnapshotter may be allocated and not used, or used multiple times.

Perhaps sending the turnstile event somewhere around

mapbox-gl-native/platform/darwin/src/MGLMapSnapshotter.mm

Lines 201 to 210 in 53351c2

self.completion = completion;
self.resultQueue = queue;
self.cancelled = NO;
__weak __typeof__(self) weakSelf = self;
// mbgl::Scheduler::GetCurrent() scheduler means "run callback on current (ie UI/main) thread"
// capture weakSelf to avoid retain cycle if callback is never called (ie snapshot cancelled)
_snapshotCallback = std::make_unique<mbgl::Actor<mbgl::MapSnapshotter::Callback>>(

would make sense?

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It looks like Android sends it in the initializer too: #13475

Which should it be? /cc @tobrun

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@julianrex I think the behavior should consist with MGLMapview did.

mapbox-gl-native/platform/ios/src/MGLMapView.mm

Lines 629 to 632 in 8bc362e

if ([UIApplication sharedApplication].applicationState != UIApplicationStateBackground) {
[MGLMapboxEvents pushTurnstileEvent];
[MGLMapboxEvents pushEvent:MMEEventTypeMapLoad withAttributes:@{}];
}

The turnstile events send in the initializer of mapview.

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@julianrex @tobrun What's your opinion? Can I merge this PR?

}
return self;
}
Expand Down