partial void InitializePartial()
        {
#if __SKIA__
            _strategy = CompositorScrollStrategy.Instance;
#elif __MACOS__
            _strategy = TransformScrollStrategy.Instance;
#endif

            _strategy.Initialize(this);

            // Mouse wheel support
            PointerWheelChanged += ScrollContentPresenter_PointerWheelChanged;

            // Touch scroll support
            ManipulationMode       = ManipulationModes.TranslateX | ManipulationModes.TranslateY;       // Updated in PrepareTouchScroll!
            ManipulationStarting  += PrepareTouchScroll;
            ManipulationDelta     += UpdateTouchScroll;
            ManipulationCompleted += CompleteTouchScroll;
        }
示例#2
0
        public ScrollContentPresenter()
        {
#if __SKIA__
            _strategy = CompositorScrollStrategy.Instance;
#elif __MACOS__
            _strategy = TransformScrollStrategy.Instance;
#endif

            _strategy.Initialize(this);

            // Mouse wheel support
            PointerWheelChanged += ScrollContentPresenter_PointerWheelChanged;

            // Touch scroll support
            ManipulationMode       = ManipulationModes.TranslateX | ManipulationModes.TranslateY;       // Updated in PrepareTouchScroll!
            ManipulationStarting  += PrepareTouchScroll;
            ManipulationDelta     += UpdateTouchScroll;
            ManipulationCompleted += CompleteTouchScroll;

            // On Skia and macOS (as UWP), the Scrolling is managed by the ScrollContentPresenter, not the ScrollViewer.
            // Note: This as direct consequences in UIElement.GetTransform and VisualTreeHelper.SearchDownForTopMostElementAt
            RegisterAsScrollPort(this);
        }