Per-attribute transition properties on MGLStyleLayer (#8225)

* [ios, macos] new struct MGLTransition

* [ios] MGLTransition struct moved to MGLTypes.h

* [ios] MGLTransition implemented for style layer properties

* [ios, macos] added support for getting property transitions

* [ios, macos] updated to MGLDurationFromTimeInterval and MGLTimeIntervalFromDuration

* [ios, macos] added transition properties test

* [ios, macos] modified key strings imp

* [ios, macos] The impl for transition properties were changed to public methods

* [ios, macos] Changelog update

* [ios] Fixed layer space formatting

* [core] The name space was fixed for getters that returned TransitionOptions

* [ios, macos] Added rawLayer transition property tests

* [ios] Added a factory method for MGLTransition and transition-related methods to NSValue(MGLAdditions)

* [ios, macos] Copyedited changelog blurbs about transition properties

1 files changed, 28 insertions, 0 deletions

diff --git a/src/mbgl/style/layers/fill_extrusion_layer.cpp b/src/mbgl/style/layers/fill_extrusion_layer.cpp
index 4672ede9b8..53f7fc0757 100644
--- a/src/mbgl/style/layers/fill_extrusion_layer.cpp
+++ b/src/mbgl/style/layers/fill_extrusion_layer.cpp
@@ -84,6 +84,10 @@ void FillExtrusionLayer::setFillExtrusionOpacityTransition(const TransitionOptio
     impl->paint.setTransition<FillExtrusionOpacity>(value, klass);
 }
 
+TransitionOptions FillExtrusionLayer::getFillExtrusionOpacityTransition(const optional<std::string>& klass) const {
+    return impl->paint.getTransition<FillExtrusionOpacity>(klass);
+}
+
 DataDrivenPropertyValue<Color> FillExtrusionLayer::getDefaultFillExtrusionColor() {
     return { Color::black() };
 }
@@ -107,6 +111,10 @@ void FillExtrusionLayer::setFillExtrusionColorTransition(const TransitionOptions
     impl->paint.setTransition<FillExtrusionColor>(value, klass);
 }
 
+TransitionOptions FillExtrusionLayer::getFillExtrusionColorTransition(const optional<std::string>& klass) const {
+    return impl->paint.getTransition<FillExtrusionColor>(klass);
+}
+
 PropertyValue<std::array<float, 2>> FillExtrusionLayer::getDefaultFillExtrusionTranslate() {
     return { {{ 0, 0 }} };
 }
@@ -126,6 +134,10 @@ void FillExtrusionLayer::setFillExtrusionTranslateTransition(const TransitionOpt
     impl->paint.setTransition<FillExtrusionTranslate>(value, klass);
 }
 
+TransitionOptions FillExtrusionLayer::getFillExtrusionTranslateTransition(const optional<std::string>& klass) const {
+    return impl->paint.getTransition<FillExtrusionTranslate>(klass);
+}
+
 PropertyValue<TranslateAnchorType> FillExtrusionLayer::getDefaultFillExtrusionTranslateAnchor() {
     return { TranslateAnchorType::Map };
 }
@@ -145,6 +157,10 @@ void FillExtrusionLayer::setFillExtrusionTranslateAnchorTransition(const Transit
     impl->paint.setTransition<FillExtrusionTranslateAnchor>(value, klass);
 }
 
+TransitionOptions FillExtrusionLayer::getFillExtrusionTranslateAnchorTransition(const optional<std::string>& klass) const {
+    return impl->paint.getTransition<FillExtrusionTranslateAnchor>(klass);
+}
+
 PropertyValue<std::string> FillExtrusionLayer::getDefaultFillExtrusionPattern() {
     return { "" };
 }
@@ -164,6 +180,10 @@ void FillExtrusionLayer::setFillExtrusionPatternTransition(const TransitionOptio
     impl->paint.setTransition<FillExtrusionPattern>(value, klass);
 }
 
+TransitionOptions FillExtrusionLayer::getFillExtrusionPatternTransition(const optional<std::string>& klass) const {
+    return impl->paint.getTransition<FillExtrusionPattern>(klass);
+}
+
 DataDrivenPropertyValue<float> FillExtrusionLayer::getDefaultFillExtrusionHeight() {
     return { 0 };
 }
@@ -187,6 +207,10 @@ void FillExtrusionLayer::setFillExtrusionHeightTransition(const TransitionOption
     impl->paint.setTransition<FillExtrusionHeight>(value, klass);
 }
 
+TransitionOptions FillExtrusionLayer::getFillExtrusionHeightTransition(const optional<std::string>& klass) const {
+    return impl->paint.getTransition<FillExtrusionHeight>(klass);
+}
+
 DataDrivenPropertyValue<float> FillExtrusionLayer::getDefaultFillExtrusionBase() {
     return { 0 };
 }
@@ -210,5 +234,9 @@ void FillExtrusionLayer::setFillExtrusionBaseTransition(const TransitionOptions&
     impl->paint.setTransition<FillExtrusionBase>(value, klass);
 }
 
+TransitionOptions FillExtrusionLayer::getFillExtrusionBaseTransition(const optional<std::string>& klass) const {
+    return impl->paint.getTransition<FillExtrusionBase>(klass);
+}
+
 } // namespace style
 } // namespace mbgl