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1 // Copyright (c) 2014 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2014 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 "content/browser/renderer_host/legacy_render_widget_host_win.h" | 5 #include "content/browser/renderer_host/legacy_render_widget_host_win.h" |
6 | 6 |
7 #include "base/command_line.h" | 7 #include "base/command_line.h" |
8 #include "base/memory/scoped_ptr.h" | 8 #include "base/memory/scoped_ptr.h" |
9 #include "base/win/windows_version.h" | 9 #include "base/win/windows_version.h" |
10 #include "content/browser/accessibility/browser_accessibility_manager_win.h" | 10 #include "content/browser/accessibility/browser_accessibility_manager_win.h" |
11 #include "content/browser/accessibility/browser_accessibility_win.h" | 11 #include "content/browser/accessibility/browser_accessibility_win.h" |
12 #include "content/public/browser/browser_accessibility_state.h" | 12 #include "content/public/browser/browser_accessibility_state.h" |
13 #include "content/public/common/content_switches.h" | 13 #include "content/public/common/content_switches.h" |
14 #include "ui/base/touch/touch_enabled.h" | 14 #include "ui/base/touch/touch_enabled.h" |
15 #include "ui/base/view_prop.h" | 15 #include "ui/base/view_prop.h" |
16 #include "ui/base/win/internal_constants.h" | 16 #include "ui/base/win/internal_constants.h" |
17 #include "ui/base/win/window_event_target.h" | 17 #include "ui/base/win/window_event_target.h" |
18 #include "ui/gfx/geometry/rect.h" | 18 #include "ui/gfx/geometry/rect.h" |
19 | 19 |
20 namespace content { | 20 namespace content { |
21 | 21 |
22 // A custom MSAA object id used to determine if a screen reader or some | 22 // A custom MSAA object id used to determine if a screen reader or some |
23 // other client is listening on MSAA events - if so, we enable full web | 23 // other client is listening on MSAA events - if so, we enable full web |
24 // accessibility support. | 24 // accessibility support. |
25 const int kIdScreenReaderHoneyPot = 1; | 25 const int kIdScreenReaderHoneyPot = 1; |
26 | 26 |
| 27 // A version of the OBJID_CLIENT constant that works in 64-bit mode too. |
| 28 static const LPARAM kObjIdClient = static_cast<ULONG>(OBJID_CLIENT); |
| 29 |
27 LegacyRenderWidgetHostHWND::~LegacyRenderWidgetHostHWND() { | 30 LegacyRenderWidgetHostHWND::~LegacyRenderWidgetHostHWND() { |
28 ::DestroyWindow(hwnd()); | 31 ::DestroyWindow(hwnd()); |
29 } | 32 } |
30 | 33 |
31 // static | 34 // static |
32 scoped_ptr<LegacyRenderWidgetHostHWND> LegacyRenderWidgetHostHWND::Create( | 35 scoped_ptr<LegacyRenderWidgetHostHWND> LegacyRenderWidgetHostHWND::Create( |
33 HWND parent) { | 36 HWND parent) { |
34 // content_unittests passes in the desktop window as the parent. We allow | 37 // content_unittests passes in the desktop window as the parent. We allow |
35 // the LegacyRenderWidgetHostHWND instance to be created in this case for | 38 // the LegacyRenderWidgetHostHWND instance to be created in this case for |
36 // these tests to pass. | 39 // these tests to pass. |
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133 LRESULT LegacyRenderWidgetHostHWND::OnGetObject(UINT message, | 136 LRESULT LegacyRenderWidgetHostHWND::OnGetObject(UINT message, |
134 WPARAM w_param, | 137 WPARAM w_param, |
135 LPARAM l_param) { | 138 LPARAM l_param) { |
136 if (kIdScreenReaderHoneyPot == l_param) { | 139 if (kIdScreenReaderHoneyPot == l_param) { |
137 // When an MSAA client has responded to our fake event on this id, | 140 // When an MSAA client has responded to our fake event on this id, |
138 // enable screen reader support. | 141 // enable screen reader support. |
139 BrowserAccessibilityState::GetInstance()->OnScreenReaderDetected(); | 142 BrowserAccessibilityState::GetInstance()->OnScreenReaderDetected(); |
140 return static_cast<LRESULT>(0L); | 143 return static_cast<LRESULT>(0L); |
141 } | 144 } |
142 | 145 |
143 if (OBJID_CLIENT != l_param || !manager_) | 146 if (kObjIdClient != l_param || !manager_) |
144 return static_cast<LRESULT>(0L); | 147 return static_cast<LRESULT>(0L); |
145 | 148 |
146 base::win::ScopedComPtr<IAccessible> root( | 149 base::win::ScopedComPtr<IAccessible> root( |
147 manager_->GetRoot()->ToBrowserAccessibilityWin()); | 150 manager_->GetRoot()->ToBrowserAccessibilityWin()); |
148 return LresultFromObject(IID_IAccessible, w_param, | 151 return LresultFromObject(IID_IAccessible, w_param, |
149 static_cast<IAccessible*>(root.Detach())); | 152 static_cast<IAccessible*>(root.Detach())); |
150 } | 153 } |
151 | 154 |
152 // We send keyboard/mouse/touch messages to the parent window via SendMessage. | 155 // We send keyboard/mouse/touch messages to the parent window via SendMessage. |
153 // While this works, this has the side effect of converting input messages into | 156 // While this works, this has the side effect of converting input messages into |
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318 // generate the legacy WM_VSCROLL/WM_HSCROLL messages. | 321 // generate the legacy WM_VSCROLL/WM_HSCROLL messages. |
319 // We add these styles to ensure that trackpad/trackpoint scrolling | 322 // We add these styles to ensure that trackpad/trackpoint scrolling |
320 // work. | 323 // work. |
321 long current_style = ::GetWindowLong(hwnd(), GWL_STYLE); | 324 long current_style = ::GetWindowLong(hwnd(), GWL_STYLE); |
322 ::SetWindowLong(hwnd(), GWL_STYLE, | 325 ::SetWindowLong(hwnd(), GWL_STYLE, |
323 current_style | WS_VSCROLL | WS_HSCROLL); | 326 current_style | WS_VSCROLL | WS_HSCROLL); |
324 return 0; | 327 return 0; |
325 } | 328 } |
326 | 329 |
327 } // namespace content | 330 } // namespace content |
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