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1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "views/focus/focus_util_win.h" | 5 #include "views/focus/focus_util_win.h" |
6 | 6 |
7 #include <windowsx.h> | 7 #include <windowsx.h> |
8 | 8 |
9 #include "app/win/scoped_prop.h" | 9 #include "app/view_prop.h" |
10 #include "base/auto_reset.h" | 10 #include "base/auto_reset.h" |
11 #include "base/win_util.h" | 11 #include "base/win_util.h" |
12 | 12 |
| 13 using app::ViewProp; |
| 14 |
13 namespace views { | 15 namespace views { |
14 | 16 |
15 // Property used to indicate the HWND supports having mouse wheel messages | 17 // Property used to indicate the HWND supports having mouse wheel messages |
16 // rerouted to it. | 18 // rerouted to it. |
17 static const wchar_t* const kHWNDSupportMouseWheelRerouting = | 19 static const char* const kHWNDSupportMouseWheelRerouting = |
18 L"__HWND_MW_REROUTE_OK"; | 20 "__HWND_MW_REROUTE_OK"; |
19 | 21 |
20 static bool WindowSupportsRerouteMouseWheel(HWND window) { | 22 static bool WindowSupportsRerouteMouseWheel(HWND window) { |
21 while (GetWindowLong(window, GWL_STYLE) & WS_CHILD) { | 23 while (GetWindowLong(window, GWL_STYLE) & WS_CHILD) { |
22 if (!IsWindow(window)) | 24 if (!IsWindow(window)) |
23 break; | 25 break; |
24 | 26 |
25 if (reinterpret_cast<bool>(GetProp(window, | 27 if (reinterpret_cast<bool>( |
26 kHWNDSupportMouseWheelRerouting))) { | 28 ViewProp::GetValue(window, kHWNDSupportMouseWheelRerouting))) { |
27 return true; | 29 return true; |
28 } | 30 } |
29 window = GetParent(window); | 31 window = GetParent(window); |
30 } | 32 } |
31 return false; | 33 return false; |
32 } | 34 } |
33 | 35 |
34 static bool IsCompatibleWithMouseWheelRedirection(HWND window) { | 36 static bool IsCompatibleWithMouseWheelRedirection(HWND window) { |
35 std::wstring class_name = win_util::GetClassName(window); | 37 std::wstring class_name = win_util::GetClassName(window); |
36 // Mousewheel redirection to comboboxes is a surprising and | 38 // Mousewheel redirection to comboboxes is a surprising and |
37 // undesireable user behavior. | 39 // undesireable user behavior. |
38 return !(class_name == L"ComboBox" || | 40 return !(class_name == L"ComboBox" || |
39 class_name == L"ComboBoxEx32"); | 41 class_name == L"ComboBoxEx32"); |
40 } | 42 } |
41 | 43 |
42 static bool CanRedirectMouseWheelFrom(HWND window) { | 44 static bool CanRedirectMouseWheelFrom(HWND window) { |
43 std::wstring class_name = win_util::GetClassName(window); | 45 std::wstring class_name = win_util::GetClassName(window); |
44 | 46 |
45 // Older Thinkpad mouse wheel drivers create a window under mouse wheel | 47 // Older Thinkpad mouse wheel drivers create a window under mouse wheel |
46 // pointer. Detect if we are dealing with this window. In this case we | 48 // pointer. Detect if we are dealing with this window. In this case we |
47 // don't need to do anything as the Thinkpad mouse driver will send | 49 // don't need to do anything as the Thinkpad mouse driver will send |
48 // mouse wheel messages to the right window. | 50 // mouse wheel messages to the right window. |
49 if ((class_name == L"Syn Visual Class") || | 51 if ((class_name == L"Syn Visual Class") || |
50 (class_name == L"SynTrackCursorWindowClass")) | 52 (class_name == L"SynTrackCursorWindowClass")) |
51 return false; | 53 return false; |
52 | 54 |
53 return true; | 55 return true; |
54 } | 56 } |
55 | 57 |
56 app::win::ScopedProp* SetWindowSupportsRerouteMouseWheel(HWND hwnd) { | 58 ViewProp* SetWindowSupportsRerouteMouseWheel(HWND hwnd) { |
57 return new app::win::ScopedProp(hwnd, kHWNDSupportMouseWheelRerouting, | 59 return new ViewProp(hwnd, kHWNDSupportMouseWheelRerouting, |
58 reinterpret_cast<HANDLE>(true)); | 60 reinterpret_cast<HANDLE>(true)); |
59 } | 61 } |
60 | 62 |
61 bool RerouteMouseWheel(HWND window, WPARAM w_param, LPARAM l_param) { | 63 bool RerouteMouseWheel(HWND window, WPARAM w_param, LPARAM l_param) { |
62 // Since this is called from a subclass for every window, we can get | 64 // Since this is called from a subclass for every window, we can get |
63 // here recursively. This will happen if, for example, a control | 65 // here recursively. This will happen if, for example, a control |
64 // reflects wheel scroll messages to its parent. Bail out if we got | 66 // reflects wheel scroll messages to its parent. Bail out if we got |
65 // here recursively. | 67 // here recursively. |
66 static bool recursion_break = false; | 68 static bool recursion_break = false; |
67 if (recursion_break) | 69 if (recursion_break) |
68 return false; | 70 return false; |
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110 } | 112 } |
111 // If redirection is disallowed, try the parent. | 113 // If redirection is disallowed, try the parent. |
112 window_under_wheel = GetAncestor(window_under_wheel, GA_PARENT); | 114 window_under_wheel = GetAncestor(window_under_wheel, GA_PARENT); |
113 } | 115 } |
114 // If we traversed back to the starting point, we should process | 116 // If we traversed back to the starting point, we should process |
115 // this message normally; return false. | 117 // this message normally; return false. |
116 return false; | 118 return false; |
117 } | 119 } |
118 | 120 |
119 } // namespace views | 121 } // namespace views |
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