ash: ozone: apply transformation to events outside the root window

ash/wm/drag_window_resizer.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 "ash/wm/drag_window_resizer.h"
 
 #include "ash/display/mouse_cursor_event_filter.h"
 #include "ash/screen_util.h"
 #include "ash/shell.h"
 #include "ash/wm/coordinate_conversion.h"
@@ skipping 58 matching lines @@
   return new DragWindowResizer(next_window_resizer, window_state);
 }
 
 void DragWindowResizer::Drag(const gfx::Point& location, int event_flags) {
   base::WeakPtr<DragWindowResizer> resizer(weak_ptr_factory_.GetWeakPtr());
   next_window_resizer_->Drag(location, event_flags);
 
   if (!resizer)
     return;
 
+  if (!GetTarget()->HasCapture())
+    GetTarget()->SetCapture();
+
   last_mouse_location_ = location;
   // Show a phantom window for dragging in another root window.
   if (HasSecondaryRootWindow()) {
     gfx::Point location_in_screen = location;
     ::wm::ConvertPointToScreen(GetTarget()->parent(), &location_in_screen);
     const bool in_original_root =
         wm::GetRootWindowAt(location_in_screen) == GetTarget()->GetRootWindow();
     UpdateDragWindow(GetTarget()->bounds(), in_original_root);
   } else {
     drag_window_controller_.reset();
   }
 }
 
 void DragWindowResizer::CompleteDrag() {
   next_window_resizer_->CompleteDrag();
 
   GetTarget()->layer()->SetOpacity(details().initial_opacity);
   drag_window_controller_.reset();
 
   // Check if the destination is another display.
   gfx::Point last_mouse_location_in_screen = last_mouse_location_;
   ::wm::ConvertPointToScreen(GetTarget()->parent(),
                              &last_mouse_location_in_screen);
   gfx::Screen* screen = Shell::GetScreen();
   const gfx::Display dst_display =
       screen->GetDisplayNearestPoint(last_mouse_location_in_screen);
 
+  if (GetTarget()->HasCapture())
+    GetTarget()->ReleaseCapture();
+
   if (dst_display.id() !=
       screen->GetDisplayNearestWindow(GetTarget()->GetRootWindow()).id()) {
     // Adjust the size and position so that it doesn't exceed the size of
     // work area.
     const gfx::Size& size = dst_display.work_area().size();
     gfx::Rect bounds = GetTarget()->bounds();
     if (bounds.width() > size.width()) {
       int diff = bounds.width() - size.width();
       bounds.set_x(bounds.x() + diff / 2);
       bounds.set_width(size.width());
@@ skipping 17 matching lines @@
 
     GetTarget()->SetBoundsInScreen(dst_bounds, dst_display);
   }
 }
 
 void DragWindowResizer::RevertDrag() {
   next_window_resizer_->RevertDrag();
 
   drag_window_controller_.reset();
   GetTarget()->layer()->SetOpacity(details().initial_opacity);
+
+  if (GetTarget()->HasCapture())
+    GetTarget()->ReleaseCapture();

[sadrul, 2014/11/24 22:27:04]

DnD and capture is relatively tricky. The changes in this file should be a
separate CL (explaining why this is necessary) with sufficient test coverage.

 }
 
 DragWindowResizer::DragWindowResizer(WindowResizer* next_window_resizer,
                                      wm::WindowState* window_state)
     : WindowResizer(window_state),
       next_window_resizer_(next_window_resizer),
       weak_ptr_factory_(this) {
   // The pointer should be confined in one display during resizing a window
   // because the window cannot span two displays at the same time anyway. The
   // exception is window/tab dragging operation. During that operation,
@@ skipping 51 matching lines @@
 }
 
 bool DragWindowResizer::ShouldAllowMouseWarp() {
   return (details().window_component == HTCAPTION) &&
       !::wm::GetTransientParent(GetTarget()) &&
       (GetTarget()->type() == ui::wm::WINDOW_TYPE_NORMAL ||
        GetTarget()->type() == ui::wm::WINDOW_TYPE_PANEL);
 }
 
 }  // namespace ash