Add mouse wheel methods to ProjectScene

Author: adazem009

src/projectscene.cpp

@@ -71,6 +71,19 @@ void ProjectScene::handleMouseRelease()
         m_engine->setMousePressed(false);
 }
 
+void ProjectScene::handleMouseWheelUp()
+{
+    if (m_engine)
+        m_engine->mouseWheelUp();
+}
+
+void ProjectScene::handleMouseWheelDown()
+{
+
+    if (m_engine)
+        m_engine->mouseWheelDown();
+}
+
 void ProjectScene::handleKeyPress(Qt::Key key, const QString &text)
 {
     m_pressedKeys.insert(key);

src/projectscene.h

@@ -34,6 +34,8 @@ class ProjectScene : public QQuickItem
         Q_INVOKABLE void handleMouseMove(qreal x, qreal y);
         Q_INVOKABLE void handleMousePress();
         Q_INVOKABLE void handleMouseRelease();
+        Q_INVOKABLE void handleMouseWheelUp();
+        Q_INVOKABLE void handleMouseWheelDown();
 
         void handleKeyPress(Qt::Key key, const QString &text);
         void handleKeyRelease(Qt::Key key, const QString &text);

test/projectscene/projectscene_test.cpp

@@ -67,6 +67,19 @@ TEST(ProjectSceneTest, HandleMouseRelease)
     scene.handleMouseRelease();
 }
 
+TEST(ProjectSceneTest, HandleMouseWheel)
+{
+    ProjectScene scene;
+    EngineMock engine;
+    scene.setEngine(&engine);
+
+    EXPECT_CALL(engine, mouseWheelUp());
+    scene.handleMouseWheelUp();
+
+    EXPECT_CALL(engine, mouseWheelDown());
+    scene.handleMouseWheelDown();
+}
+
 TEST(ProjectSceneTest, HandleKeyPressAndRelease)
 {
     static const std::unordered_map<Qt::Key, KeyEvent::Type> SPECIAL_KEY_MAP = {