Dispatch Mouse enter/exit window events (Linux Aura)

ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/widget/desktop_aura/desktop_root_window_host_x11.h"
 
 #include <X11/extensions/shape.h>
 #include <X11/extensions/XInput2.h>
 #include <X11/Xatom.h>
 #include <X11/Xregion.h>
@@ skipping 41 matching lines @@
     NULL;
 
 DEFINE_WINDOW_PROPERTY_KEY(
     aura::Window*, kViewsWindowForRootWindow, NULL);
 
 DEFINE_WINDOW_PROPERTY_KEY(
     DesktopRootWindowHostX11*, kHostForRootWindow, NULL);
 
 namespace {
 
+class ModifiedMouseEvent : public ui::MouseEvent {
+ public:
+  ModifiedMouseEvent(const ui::MouseEvent& event, ui::EventType type)
+      : ui::MouseEvent(event,
+                       static_cast<View*>(NULL),
+                       static_cast<View*>(NULL)) {
+    SetType(type);
+  }
+
+  virtual ~ModifiedMouseEvent() {}
+};
+
 // Standard Linux mouse buttons for going back and forward.
 const int kBackMouseButton = 8;
 const int kForwardMouseButton = 9;
 
 // Constants that are part of EWMH.
 const int k_NET_WM_STATE_ADD = 1;
 const int k_NET_WM_STATE_REMOVE = 0;
 
 const char* kAtomsToCache[] = {
   "WM_DELETE_WINDOW",
@@ skipping 911 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // DesktopRootWindowHostX11, MessageLoop::Dispatcher implementation:
 
 bool DesktopRootWindowHostX11::Dispatch(const base::NativeEvent& event) {
   XEvent* xev = event;
 
   // May want to factor CheckXEventForConsistency(xev); into a common location
   // since it is called here.
   switch (xev->type) {
+    case EnterNotify: {
+      // Widget::OnMouseEvent ignores system mouse enter events since it's not
+      // used on other platforms. We'll convert this to a mouse move event to be
+      // consistent. Widget::OnMouseEvent will infer that this is actually a
+      // mouse enter event and call the correct event handler.
+      ui::MouseEvent mouse_event(xev);
+      ModifiedMouseEvent(mouse_event, ui::ET_MOUSE_MOVED);
+      DispatchMouseEvent(&mouse_event);
+      break;
+    }
+    case LeaveNotify: {
+      ui::MouseEvent mouse_event(xev);
+      DispatchMouseEvent(&mouse_event);
+      break;
+    }
     case Expose: {
       gfx::Rect damage_rect(xev->xexpose.x, xev->xexpose.y,
                             xev->xexpose.width, xev->xexpose.height);
       root_window_host_delegate_->OnHostPaint(damage_rect);
       break;
     }
     case KeyPress: {
       ui::KeyEvent keydown_event(xev, false);
       root_window_host_delegate_->OnHostKeyEvent(&keydown_event);
       break;
@@ skipping 280 matching lines @@
 DesktopRootWindowHost* DesktopRootWindowHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura,
     const gfx::Rect& initial_bounds) {
   return new DesktopRootWindowHostX11(native_widget_delegate,
                                         desktop_native_widget_aura,
                                         initial_bounds);
 }
 
 }  // namespace views