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1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "ui/views/event_utils.h" | |
6 | |
7 #include "base/logging.h" | |
8 #include "base/memory/scoped_ptr.h" | |
9 #include "ui/aura/client/screen_position_client.h" | |
10 #include "ui/aura/window_event_dispatcher.h" | |
11 #include "ui/aura/window_tree_host.h" | |
12 #include "ui/events/event.h" | |
13 #include "ui/gfx/point.h" | |
14 #include "ui/views/views_delegate.h" | |
15 | |
16 using aura::client::ScreenPositionClient; | |
17 | |
18 namespace views { | |
19 | |
20 bool RepostLocatedEvent(gfx::NativeWindow window, | |
21 const ui::LocatedEvent& event) { | |
22 #if defined(OS_WIN) | |
23 // On Windows, if the |window| parameter is NULL, then we attempt to repost | |
24 // the event to the window at the current location, if it is on the current | |
25 // thread. | |
26 HWND target_window = NULL; | |
27 if (!window) { | |
28 target_window = ::WindowFromPoint(event.location().ToPOINT()); | |
29 if (::GetWindowThreadProcessId(target_window, NULL) != | |
30 ::GetCurrentThreadId()) | |
31 return false; | |
32 } else { | |
33 if (ViewsDelegate::views_delegate && | |
34 !ViewsDelegate::views_delegate->IsWindowInMetro(window)) | |
35 target_window = window->GetHost()->GetAcceleratedWidget(); | |
36 } | |
37 return RepostLocatedEventWin(target_window, event); | |
38 #else | |
39 if (!window) | |
40 return false; | |
41 | |
42 aura::Window* root_window = window->GetRootWindow(); | |
43 | |
44 gfx::Point root_loc(event.location()); | |
45 ScreenPositionClient* spc = | |
46 aura::client::GetScreenPositionClient(root_window); | |
47 if (!spc) | |
48 return false; | |
49 | |
50 spc->ConvertPointFromScreen(root_window, &root_loc); | |
51 | |
52 scoped_ptr<ui::LocatedEvent> relocated; | |
53 if (!event.IsMouseEvent()) { | |
54 // TODO(rbyers): Gesture event repost is tricky to get right | |
55 // crbug.com/170987. | |
56 DCHECK(event.IsGestureEvent()); | |
57 return false; | |
58 } | |
59 | |
60 const ui::MouseEvent& orig = static_cast<const ui::MouseEvent&>(event); | |
61 relocated.reset(new ui::MouseEvent(orig)); | |
62 relocated->set_location(root_loc); | |
63 relocated->set_root_location(root_loc); | |
64 | |
65 root_window->GetHost()->dispatcher()->RepostEvent(*relocated); | |
66 return true; | |
67 #endif | |
68 } | |
69 | |
70 } // namespace views | |
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