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