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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 "ui/base/win/mouse_wheel_util.h" | 5 #include "ui/base/win/mouse_wheel_util.h" |
| 6 | 6 |
| 7 #include <windowsx.h> | 7 #include <windowsx.h> |
| 8 | 8 |
| 9 #include "base/auto_reset.h" | 9 #include "base/auto_reset.h" |
| 10 #include "ui/base/view_prop.h" | 10 #include "ui/base/view_prop.h" |
| 11 #include "ui/base/win/hwnd_util.h" | 11 #include "ui/gfx/win/hwnd_util.h" |
| 12 | 12 |
| 13 namespace ui { | 13 namespace ui { |
| 14 | 14 |
| 15 // Property used to indicate the HWND supports having mouse wheel messages | 15 // Property used to indicate the HWND supports having mouse wheel messages |
| 16 // rerouted to it. | 16 // rerouted to it. |
| 17 static const char* const kHWNDSupportMouseWheelRerouting = | 17 static const char* const kHWNDSupportMouseWheelRerouting = |
| 18 "__HWND_MW_REROUTE_OK"; | 18 "__HWND_MW_REROUTE_OK"; |
| 19 | 19 |
| 20 static bool WindowSupportsRerouteMouseWheel(HWND window) { | 20 static bool WindowSupportsRerouteMouseWheel(HWND window) { |
| 21 while (GetWindowLong(window, GWL_STYLE) & WS_CHILD) { | 21 while (GetWindowLong(window, GWL_STYLE) & WS_CHILD) { |
| 22 if (!IsWindow(window)) | 22 if (!IsWindow(window)) |
| 23 break; | 23 break; |
| 24 | 24 |
| 25 if (ViewProp::GetValue(window, kHWNDSupportMouseWheelRerouting) != NULL) { | 25 if (ViewProp::GetValue(window, kHWNDSupportMouseWheelRerouting) != NULL) { |
| 26 return true; | 26 return true; |
| 27 } | 27 } |
| 28 window = GetParent(window); | 28 window = GetParent(window); |
| 29 } | 29 } |
| 30 return false; | 30 return false; |
| 31 } | 31 } |
| 32 | 32 |
| 33 static bool IsCompatibleWithMouseWheelRedirection(HWND window) { | 33 static bool IsCompatibleWithMouseWheelRedirection(HWND window) { |
| 34 std::wstring class_name = GetClassName(window); | 34 std::wstring class_name = gfx::GetClassName(window); |
| 35 // Mousewheel redirection to comboboxes is a surprising and | 35 // Mousewheel redirection to comboboxes is a surprising and |
| 36 // undesireable user behavior. | 36 // undesireable user behavior. |
| 37 return !(class_name == L"ComboBox" || | 37 return !(class_name == L"ComboBox" || |
| 38 class_name == L"ComboBoxEx32"); | 38 class_name == L"ComboBoxEx32"); |
| 39 } | 39 } |
| 40 | 40 |
| 41 static bool CanRedirectMouseWheelFrom(HWND window) { | 41 static bool CanRedirectMouseWheelFrom(HWND window) { |
| 42 std::wstring class_name = GetClassName(window); | 42 std::wstring class_name = gfx::GetClassName(window); |
| 43 | 43 |
| 44 // Older Thinkpad mouse wheel drivers create a window under mouse wheel | 44 // Older Thinkpad mouse wheel drivers create a window under mouse wheel |
| 45 // pointer. Detect if we are dealing with this window. In this case we | 45 // pointer. Detect if we are dealing with this window. In this case we |
| 46 // don't need to do anything as the Thinkpad mouse driver will send | 46 // don't need to do anything as the Thinkpad mouse driver will send |
| 47 // mouse wheel messages to the right window. | 47 // mouse wheel messages to the right window. |
| 48 if ((class_name == L"Syn Visual Class") || | 48 if ((class_name == L"Syn Visual Class") || |
| 49 (class_name == L"SynTrackCursorWindowClass")) | 49 (class_name == L"SynTrackCursorWindowClass")) |
| 50 return false; | 50 return false; |
| 51 | 51 |
| 52 return true; | 52 return true; |
| (...skipping 56 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 109 } | 109 } |
| 110 // If redirection is disallowed, try the parent. | 110 // If redirection is disallowed, try the parent. |
| 111 window_under_wheel = GetAncestor(window_under_wheel, GA_PARENT); | 111 window_under_wheel = GetAncestor(window_under_wheel, GA_PARENT); |
| 112 } | 112 } |
| 113 // If we traversed back to the starting point, we should process | 113 // If we traversed back to the starting point, we should process |
| 114 // this message normally; return false. | 114 // this message normally; return false. |
| 115 return false; | 115 return false; |
| 116 } | 116 } |
| 117 | 117 |
| 118 } // namespace ui | 118 } // namespace ui |
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