1 files changed, 29 insertions, 0 deletions
diff --git a/include/cru/ui/events/MouseWheelEventArgs.hpp b/include/cru/ui/events/MouseWheelEventArgs.hpp
new file mode 100644
index 00000000..d0b3a145
--- /dev/null
+++ b/include/cru/ui/events/MouseWheelEventArgs.hpp
@@ -0,0 +1,29 @@
+#pragma once
+#include "MouseEventArgs.hpp"
+
+#include "cru/platform/gui/Keyboard.hpp"
+
+namespace cru::ui::events {
+class MouseWheelEventArgs : public MouseEventArgs {
+ public:
+  MouseWheelEventArgs(Object* sender, Object* original_sender,
+                      const Point& point, const float delta,
+                      platform::gui::KeyModifier key_modifier)
+      : MouseEventArgs(sender, original_sender, point),
+        delta_(delta),
+        key_modifier_(key_modifier) {}
+  MouseWheelEventArgs(const MouseWheelEventArgs& other) = default;
+  MouseWheelEventArgs(MouseWheelEventArgs&& other) = default;
+  MouseWheelEventArgs& operator=(const MouseWheelEventArgs& other) = default;
+  MouseWheelEventArgs& operator=(MouseWheelEventArgs&& other) = default;
+  ~MouseWheelEventArgs() override = default;
+
+  // Positive means down; Negative means up.
+  float GetDelta() const { return delta_; }
+  platform::gui::KeyModifier GetKeyModifier() const { return key_modifier_; }
+
+ private:
+  float delta_;
+  platform::gui::KeyModifier key_modifier_;
+};
+}  // namespace cru::ui::event