Merge pull request #596 from amaitland/feature/SendMouseWheelEvent

Send MouseWheel events with WPF support

Author: amaitland

CefSharp.WinForms/ChromiumWebBrowser.cs

@@ -120,6 +120,11 @@ public Task<JavascriptResponse> EvaluateScriptAsync(string script, TimeSpan? tim
             return managedCefBrowserAdapter.EvaluateScriptAsync(script, timeout);
         }
 
+        public void SendMouseWheelEvent(int x, int y, int deltaX, int deltaY)
+        {
+            managedCefBrowserAdapter.OnMouseWheel(x, y, deltaX, deltaY);
+        }
+
         public event EventHandler<LoadErrorEventArgs> LoadError;
         public event EventHandler<FrameLoadStartEventArgs> FrameLoadStart;
         public event EventHandler<FrameLoadEndEventArgs> FrameLoadEnd;

CefSharp.Wpf/ChromiumWebBrowser.cs

@@ -893,6 +893,11 @@ protected override void OnMouseWheel(MouseWheelEventArgs e)
             }
         }
 
+        public void SendMouseWheelEvent(int x, int y, int deltaX, int deltaY)
+        {
+            managedCefBrowserAdapter.OnMouseWheel(x, y, deltaX, deltaY);
+        }
+
         protected void PopupMouseEnter(object sender, MouseEventArgs e)
         {
             Focus();

CefSharp/IWebBrowser.cs

@@ -256,6 +256,15 @@ public interface IWebBrowser : IDisposable
         /// <summary>
         /// Explicitly close the developer tools window if one exists for this browser instance.
         /// </summary>
-        void CloseDevTools();               
+        void CloseDevTools();
+
+        /// <summary>
+        /// Send a mouse wheel event to the browser.
+        /// </summary>
+        /// <param name="x">X-Axis coordinate relative to the upper-left corner of the view.</param>
+        /// <param name="y">Y-Axis coordinate relative to the upper-left corner of the view.</param>
+        /// <param name="deltaX">Movement delta for X direction.</param>
+        /// <param name="deltaY">movement delta for Y direction.</param>
+        void SendMouseWheelEvent(int x, int y, int deltaX, int deltaY);
     }
 }