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| author | m-stephen <truestyle2005@163.com> | 2019-06-04 11:05:24 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-06-04 11:05:24 +0800 |
| commit | 6742017a9a272a362efac537c6fd3938d6e0c95c (patch) | |
| tree | b0d5195a7383fcf92e84335329430724c4341857 | |
| parent | 015a64b2a25dcf19731c3ca454309d80e9ad9dee (diff) | |
| download | qtlocation-mapboxgl-6742017a9a272a362efac537c6fd3938d6e0c95c.tar.gz | |
[macos]Added an `MGLMapView.prefetchesTiles` property to configure lo… (#14816)
* [macos]Added an `MGLMapView.prefetchesTiles` property to configure lower-resolution tile prefetching behavior
* [macos]Update changelog
| -rw-r--r-- | platform/macos/CHANGELOG.md | 2 | ||||
| -rw-r--r-- | platform/macos/src/MGLMapView.h | 13 | ||||
| -rw-r--r-- | platform/macos/src/MGLMapView.mm | 5 |
3 files changed, 20 insertions, 0 deletions
diff --git a/platform/macos/CHANGELOG.md b/platform/macos/CHANGELOG.md index 520f8c204b..9094e8ebbc 100644 --- a/platform/macos/CHANGELOG.md +++ b/platform/macos/CHANGELOG.md @@ -2,6 +2,8 @@ ## master +* Added an `MGLMapView.prefetchesTiles` property to configure lower-resolution tile prefetching behavior. ([#14816](https://github.com/mapbox/mapbox-gl-native/pull/14816)) + ### Styles and rendering * Setting `MGLMapView.contentInset` now moves the map’s focal point to the center of the content frame after insetting. ([#14664](https://github.com/mapbox/mapbox-gl-native/pull/14664)) diff --git a/platform/macos/src/MGLMapView.h b/platform/macos/src/MGLMapView.h index 21ae8c2974..35db5257d9 100644 --- a/platform/macos/src/MGLMapView.h +++ b/platform/macos/src/MGLMapView.h @@ -188,6 +188,19 @@ MGL_EXPORT IB_DESIGNABLE */ @property (nonatomic, readonly) NSView *attributionView; +/** + A Boolean value indicating whether the map should prefetch tiles. + + When this property is set to `YES`, the map view prefetches tiles designed for + a low zoom level and displays them until receiving more detailed tiles for the + current zoom level. The prefetched tiles typically contain simplified versions + of each shape, improving the map view’s perceived performance. + + The default value of this property is `YES`. + */ +@property (nonatomic, assign) BOOL prefetchesTiles; + + #pragma mark Manipulating the Viewpoint /** diff --git a/platform/macos/src/MGLMapView.mm b/platform/macos/src/MGLMapView.mm index 04b895bb50..0a1ec5516a 100644 --- a/platform/macos/src/MGLMapView.mm +++ b/platform/macos/src/MGLMapView.mm @@ -654,6 +654,11 @@ public: self.styleURL = styleURL; } +- (void)setPrefetchesTiles:(BOOL)prefetchesTiles +{ + _mbglMap->setPrefetchZoomDelta(prefetchesTiles ? mbgl::util::DEFAULT_PREFETCH_ZOOM_DELTA : 0); +} + - (mbgl::Map *)mbglMap { return _mbglMap; } |