From 7ccb08ac09a83e81a822712b712dc0473c9b23cf Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 27 Nov 2018 17:53:21 +0800
Subject: Add mouse wheel support.

---
 src/ui/events/ui_event.hpp | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'src/ui/events/ui_event.hpp')

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>;
-- 
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