/// <summary>
/// Sends a mouse wheel event to the browser.
/// </summary>
/// <param name="x">The x-coordinate of the mouse relative to the left edge of the view.</param>
/// <param name="y">The y-coordinate of the mouse relative to the top edge of the view.</param>
/// <param name="deltaX">A movement delta in the X direction.</param>
/// <param name="deltaY">A movement delta in the Y direction.</param>
public void SendMouseWheelEvent(int x, int y, int deltaX, int deltaY)
{
CefBrowserHost browserHost = this.BrowserObject?.Host;
if (browserHost == null)
{
return;
}
InitMouseEvent(x, y, CefEventFlags.None);
browserHost.SendMouseWheelEvent(_mouseEventProxy, deltaX, deltaY);
}
protected override bool OnMouseWheel(int delta)
{
bool result = base.OnMouseWheel(delta);
if (IsEnabledInHierarchy() && browserHost != null && new Rect(0, 0, 1, 1).IsContainsPoint(MousePosition))
{
try
{
browserHost.SendMouseWheelEvent(GetCurrentMouseEvent(), 0, delta);
}
catch (Exception ex)
{
Log.Error("WebBrowserControl: Caught exception in OnMouseWheel(): " + ex.Message);
}
}
return(result);
}
protected override bool OnMouseWheel(int delta)
{
bool result = base.OnMouseWheel(delta);
if (EnabledInHierarchy && VisibleInHierarchy && browserHost != null && new Rectangle(0, 0, 1, 1).Contains(MousePosition))
{
try
{
browserHost.SendMouseWheelEvent(GetCurrentMouseEvent(), 0, delta);
}
catch (Exception ex)
{
Log.Error("UIWebBrowser: Caught exception in OnMouseWheel: " + ex.Message);
}
}
return(result);
}
private void AttachEventHandlers(WpfCefBrowser browser)
{
browser.GotKeyboardFocus += (sender, arg) =>
{
try
{
if (_browserHost != null)
{
_browserHost.SendFocusEvent(true);
}
}
catch (Exception ex)
{
_logger.ErrorException("WpfCefBrowser: Caught exception in GotFocus()", ex);
}
};
browser.LostKeyboardFocus += (sender, arg) =>
{
try
{
if (_browserHost != null)
{
_browserHost.SendFocusEvent(false);
}
}
catch (Exception ex)
{
_logger.ErrorException("WpfCefBrowser: Caught exception in LostFocus()", ex);
}
};
browser.MouseLeave += (sender, arg) =>
{
try
{
if (_browserHost != null)
{
CefMouseEvent mouseEvent = new CefMouseEvent()
{
X = 0,
Y = 0
};
mouseEvent.Modifiers = GetMouseModifiers();
_browserHost.SendMouseMoveEvent(mouseEvent, true);
}
}
catch (Exception ex)
{
_logger.ErrorException("WpfCefBrowser: Caught exception in MouseLeave()", ex);
}
};
browser.MouseMove += (sender, arg) =>
{
try
{
if (_browserHost != null)
{
Point cursorPos = arg.GetPosition(this);
CefMouseEvent mouseEvent = new CefMouseEvent()
{
X = (int)cursorPos.X,
Y = (int)cursorPos.Y
};
mouseEvent.Modifiers = GetMouseModifiers();
_browserHost.SendMouseMoveEvent(mouseEvent, false);
}
}
catch (Exception ex)
{
_logger.ErrorException("WpfCefBrowser: Caught exception in MouseMove()", ex);
}
};
browser.MouseDown += (sender, arg) =>
{
try
{
if (_browserHost != null)
{
Focus();
Point cursorPos = arg.GetPosition(this);
CefMouseEvent mouseEvent = new CefMouseEvent()
{
X = (int)cursorPos.X,
Y = (int)cursorPos.Y,
};
mouseEvent.Modifiers = GetMouseModifiers();
if (arg.ChangedButton == MouseButton.Left)
{
_browserHost.SendMouseClickEvent(mouseEvent, CefMouseButtonType.Left, false, arg.ClickCount);
}
else if (arg.ChangedButton == MouseButton.Middle)
{
_browserHost.SendMouseClickEvent(mouseEvent, CefMouseButtonType.Middle, false, arg.ClickCount);
}
else if (arg.ChangedButton == MouseButton.Right)
{
_browserHost.SendMouseClickEvent(mouseEvent, CefMouseButtonType.Right, false, arg.ClickCount);
}
}
}
catch (Exception ex)
{
_logger.ErrorException("WpfCefBrowser: Caught exception in MouseDown()", ex);
}
};
browser.MouseUp += (sender, arg) =>
{
try
{
if (_browserHost != null)
{
Point cursorPos = arg.GetPosition(this);
CefMouseEvent mouseEvent = new CefMouseEvent()
{
X = (int)cursorPos.X,
Y = (int)cursorPos.Y,
};
mouseEvent.Modifiers = GetMouseModifiers();
if (arg.ChangedButton == MouseButton.Left)
{
_browserHost.SendMouseClickEvent(mouseEvent, CefMouseButtonType.Left, true, 1);
}
else if (arg.ChangedButton == MouseButton.Middle)
{
_browserHost.SendMouseClickEvent(mouseEvent, CefMouseButtonType.Middle, true, 1);
}
else if (arg.ChangedButton == MouseButton.Right)
{
_browserHost.SendMouseClickEvent(mouseEvent, CefMouseButtonType.Right, true, 1);
}
}
}
catch (Exception ex)
{
_logger.ErrorException("WpfCefBrowser: Caught exception in MouseUp()", ex);
}
};
browser.MouseWheel += (sender, arg) =>
{
try
{
if (_browserHost != null)
{
Point cursorPos = arg.GetPosition(this);
CefMouseEvent mouseEvent = new CefMouseEvent()
{
X = (int)cursorPos.X,
Y = (int)cursorPos.Y,
};
_browserHost.SendMouseWheelEvent(mouseEvent, 0, arg.Delta);
}
}
catch (Exception ex)
{
_logger.ErrorException("WpfCefBrowser: Caught exception in MouseWheel()", ex);
}
};
// TODO: require more intelligent processing
browser.PreviewTextInput += (sender, arg) =>
{
if (_browserHost != null)
{
_logger.Debug("TextInput: text {0}", arg.Text);
foreach (var c in arg.Text)
{
CefKeyEvent keyEvent = new CefKeyEvent()
{
EventType = CefKeyEventType.Char,
WindowsKeyCode = (int)c,
};
keyEvent.Modifiers = GetKeyboardModifiers();
_browserHost.SendKeyEvent(keyEvent);
}
}
arg.Handled = true;
};
// TODO: require more intelligent processing
browser.PreviewKeyDown += (sender, arg) =>
{
try
{
if (_browserHost != null)
{
CefKeyEvent keyEvent = new CefKeyEvent()
{
EventType = CefKeyEventType.RawKeyDown,
WindowsKeyCode = KeyInterop.VirtualKeyFromKey(arg.Key == Key.System ? arg.SystemKey : arg.Key),
NativeKeyCode = 0,
IsSystemKey = arg.Key == Key.System,
};
keyEvent.Modifiers = GetKeyboardModifiers();
_browserHost.SendKeyEvent(keyEvent);
}
}
catch (Exception ex)
{
_logger.ErrorException("WpfCefBrowser: Caught exception in PreviewKeyDown()", ex);
}
arg.Handled = HandledKeys.Contains(arg.Key);
};
// TODO: require more intelligent processing
browser.PreviewKeyUp += (sender, arg) =>
{
try
{
if (_browserHost != null)
{
//_logger.Debug(string.Format("KeyUp: system key {0}, key {1}", arg.SystemKey, arg.Key));
CefKeyEvent keyEvent = new CefKeyEvent()
{
EventType = CefKeyEventType.KeyUp,
WindowsKeyCode = KeyInterop.VirtualKeyFromKey(arg.Key == Key.System ? arg.SystemKey : arg.Key),
NativeKeyCode = 0,
IsSystemKey = arg.Key == Key.System,
};
keyEvent.Modifiers = GetKeyboardModifiers();
_browserHost.SendKeyEvent(keyEvent);
}
}
catch (Exception ex)
{
_logger.ErrorException("WpfCefBrowser: Caught exception in PreviewKeyUp()", ex);
}
arg.Handled = true;
};
}
private void MouseScrollEvent(CefMouseEvent mouseEvent, int scroll)
{
browserHost.SendMouseWheelEvent(mouseEvent, 0, scroll);
}
