diff --git a/src/Avalonia.Input/MouseDevice.cs b/src/Avalonia.Input/MouseDevice.cs index 3749947da9e..eed51e6c4a6 100644 --- a/src/Avalonia.Input/MouseDevice.cs +++ b/src/Avalonia.Input/MouseDevice.cs @@ -5,6 +5,7 @@ using Avalonia.Input.Raw; using Avalonia.Interactivity; using Avalonia.Platform; +using Avalonia.Utilities; using Avalonia.VisualTree; namespace Avalonia.Input @@ -334,6 +335,13 @@ private bool MouseWheel(IMouseDevice device, ulong timestamp, IInputRoot root, P var hit = HitTest(root, p); var source = GetSource(hit); + // KeyModifiers.Shift should scroll in horizontal direction. This does not work on every platform. + // If Shift-Key is pressed and X is close to 0 we swap the Vector. + if (inputModifiers == KeyModifiers.Shift && MathUtilities.IsZero(delta.X)) + { + delta = new Vector(delta.Y, delta.X); + } + if (source is not null) { var e = new PointerWheelEventArgs(source, _pointer, root, p, timestamp, props, inputModifiers, delta);