Add mouse wheel support.

1 files changed, 25 insertions, 0 deletions

diff --git a/src/ui/events/ui_event.hpp b/src/ui/events/ui_event.hpp
index cc651832..321e7135 100644
--- a/src/ui/events/ui_event.hpp
+++ b/src/ui/events/ui_event.hpp
@@ -88,6 +88,30 @@ namespace cru::ui::events
     };
 
 
+    class MouseWheelEventArgs : public MouseEventArgs
+    {
+    public:
+        MouseWheelEventArgs(Object* sender, Object* original_sender, const Point& point, const float delta)
+            : MouseEventArgs(sender, original_sender, point), delta_(delta)
+        {
+
+        }
+        MouseWheelEventArgs(const MouseWheelEventArgs& other) = default;
+        MouseWheelEventArgs(MouseWheelEventArgs&& other) = default;
+        MouseWheelEventArgs& operator=(const MouseWheelEventArgs& other) = default;
+        MouseWheelEventArgs& operator=(MouseWheelEventArgs&& other) = default;
+        ~MouseWheelEventArgs() override = default;
+
+        float GetDelta() const
+        {
+            return delta_;
+        }
+
+    private:
+        float delta_;
+    };
+
+
     class DrawEventArgs : public UiEventArgs
     {
     public:
@@ -307,6 +331,7 @@ namespace cru::ui::events
     using UiEvent = Event<UiEventArgs>;
     using MouseEvent = Event<MouseEventArgs>;
     using MouseButtonEvent = Event<MouseButtonEventArgs>;
+    using MouseWheelEvent = Event<MouseWheelEventArgs>;
     using DrawEvent = Event<DrawEventArgs>;
     using PositionChangedEvent = Event<PositionChangedEventArgs>;
     using SizeChangedEvent = Event<SizeChangedEventArgs>;