Add onLayerOrderChanged() to ISpriteHandler

Author: adazem009

include/scratchcpp/ispritehandler.h

@@ -44,6 +44,9 @@ class LIBSCRATCHCPP_EXPORT ISpriteHandler
         /*! Called when the rotation style changes. */
         virtual void onRotationStyleChanged(Sprite::RotationStyle rotationStyle) = 0;
 
+        /*! Called when the layer order changes. */
+        virtual void onLayerOrderChanged(int layerOrder) = 0;
+
         /*!
          * Called when the value of the given graphics effect changes.
          * \note This method isn't called when all effects are cleared, use onGraphicsEffectsCleared() for this.

src/scratch/sprite.cpp

@@ -319,6 +319,9 @@ void Sprite::setRotationStyle(const char *newRotationStyle)
 void Sprite::setLayerOrder(int newLayerOrder)
 {
     Target::setLayerOrder(newLayerOrder);
+
+    if (impl->iface)
+        impl->iface->onLayerOrderChanged(newLayerOrder);
 }
 
 /*! Returns the bounding rectangle of the sprite. */

test/mocks/spritehandlermock.h

@@ -21,6 +21,7 @@ class SpriteHandlerMock : public ISpriteHandler
         MOCK_METHOD(void, onSizeChanged, (double), (override));
         MOCK_METHOD(void, onDirectionChanged, (double), (override));
         MOCK_METHOD(void, onRotationStyleChanged, (Sprite::RotationStyle), (override));
+        MOCK_METHOD(void, onLayerOrderChanged, (int), (override));
         MOCK_METHOD(void, onGraphicsEffectChanged, (IGraphicsEffect *, double), (override));
         MOCK_METHOD(void, onGraphicsEffectsCleared, (), (override));
 

test/target_interfaces/ispritehandler_test.cpp

@@ -118,6 +118,12 @@ TEST_F(ISpriteHandlerTest, RotationStyle)
     m_sprite.setRotationStyle(Sprite::RotationStyle::LeftRight);
 }
 
+TEST_F(ISpriteHandlerTest, LayerOrder)
+{
+    EXPECT_CALL(m_handler, onLayerOrderChanged(7)).Times(1);
+    m_sprite.setLayerOrder(7);
+}
+
 TEST_F(ISpriteHandlerTest, Costume)
 {
     auto costume1 = std::make_shared<Costume>("", "", "");