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1 // Copyright (c) 2012 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 #ifndef UI_AURA_REMOTE_WINDOW_TREE_HOST_WIN_H_ | |
6 #define UI_AURA_REMOTE_WINDOW_TREE_HOST_WIN_H_ | |
7 | |
8 #include <vector> | |
9 | |
10 #include "base/compiler_specific.h" | |
11 #include "base/strings/string16.h" | |
12 #include "ui/aura/window_tree_host.h" | |
13 #include "ui/base/ime/remote_input_method_delegate_win.h" | |
14 #include "ui/events/event.h" | |
15 #include "ui/events/event_constants.h" | |
16 #include "ui/events/event_source.h" | |
17 #include "ui/gfx/native_widget_types.h" | |
18 #include "ui/metro_viewer/ime_types.h" | |
19 | |
20 struct MetroViewerHostMsg_MouseButtonParams; | |
21 | |
22 namespace base { | |
23 class FilePath; | |
24 } | |
25 | |
26 namespace ui { | |
27 class RemoteInputMethodPrivateWin; | |
28 class ViewProp; | |
29 } | |
30 | |
31 namespace IPC { | |
32 class Message; | |
33 class Sender; | |
34 } | |
35 | |
36 namespace aura { | |
37 | |
38 // WindowTreeHost implementaton that receives events from a different | |
39 // process. In the case of Windows this is the Windows 8 (aka Metro) | |
40 // frontend process, which forwards input events to this class. | |
41 class AURA_EXPORT RemoteWindowTreeHostWin | |
42 : public WindowTreeHost, | |
43 public ui::EventSource, | |
44 public ui::internal::RemoteInputMethodDelegateWin { | |
45 public: | |
46 // Returns the current RemoteWindowTreeHostWin. This does *not* create a | |
47 // RemoteWindowTreeHostWin. | |
48 static RemoteWindowTreeHostWin* Instance(); | |
49 | |
50 // Returns true if there is a RemoteWindowTreeHostWin and it has a valid | |
51 // HWND. A return value of false typically indicates we're not in metro mode. | |
52 static bool IsValid(); | |
53 | |
54 // Sets the handle to the remote window. The |remote_window| is the actual | |
55 // window owned by the viewer process. Call this before Connected() for some | |
56 // customers like input method initialization which needs the handle. | |
57 void SetRemoteWindowHandle(HWND remote_window); | |
58 HWND remote_window() { return remote_window_; } | |
59 | |
60 // The |host| can be used when we need to send a message to it. | |
61 void Connected(IPC::Sender* host); | |
62 // Called when the remote process has closed its IPC connection. | |
63 void Disconnected(); | |
64 | |
65 // Called when we have a message from the remote process. | |
66 bool OnMessageReceived(const IPC::Message& message); | |
67 | |
68 void HandleOpenURLOnDesktop(const base::FilePath& shortcut, | |
69 const base::string16& url); | |
70 | |
71 void HandleWindowSizeChanged(uint32 width, uint32 height); | |
72 | |
73 // Returns the active ASH root window. | |
74 Window* GetAshWindow(); | |
75 | |
76 // Returns true if the remote window is the foreground window according to the | |
77 // OS. | |
78 bool IsForegroundWindow(); | |
79 | |
80 protected: | |
81 RemoteWindowTreeHostWin(); | |
82 virtual ~RemoteWindowTreeHostWin(); | |
83 | |
84 private: | |
85 // IPC message handing methods: | |
86 void OnMouseMoved(int32 x, int32 y, int32 flags); | |
87 void OnMouseButton(const MetroViewerHostMsg_MouseButtonParams& params); | |
88 void OnKeyDown(uint32 vkey, | |
89 uint32 repeat_count, | |
90 uint32 scan_code, | |
91 uint32 flags); | |
92 void OnKeyUp(uint32 vkey, | |
93 uint32 repeat_count, | |
94 uint32 scan_code, | |
95 uint32 flags); | |
96 void OnChar(uint32 key_code, | |
97 uint32 repeat_count, | |
98 uint32 scan_code, | |
99 uint32 flags); | |
100 void OnWindowActivated(bool repaint); | |
101 void OnEdgeGesture(); | |
102 void OnTouchDown(int32 x, int32 y, uint64 timestamp, uint32 pointer_id); | |
103 void OnTouchUp(int32 x, int32 y, uint64 timestamp, uint32 pointer_id); | |
104 void OnTouchMoved(int32 x, int32 y, uint64 timestamp, uint32 pointer_id); | |
105 void OnSetCursorPosAck(); | |
106 | |
107 // For Input Method support: | |
108 ui::RemoteInputMethodPrivateWin* GetRemoteInputMethodPrivate(); | |
109 void OnImeCandidatePopupChanged(bool visible); | |
110 void OnImeCompositionChanged( | |
111 const base::string16& text, | |
112 int32 selection_start, | |
113 int32 selection_end, | |
114 const std::vector<metro_viewer::UnderlineInfo>& underlines); | |
115 void OnImeTextCommitted(const base::string16& text); | |
116 void OnImeInputSourceChanged(uint16 language_id, bool is_ime); | |
117 | |
118 // WindowTreeHost overrides: | |
119 virtual ui::EventSource* GetEventSource() override; | |
120 virtual gfx::AcceleratedWidget GetAcceleratedWidget() override; | |
121 virtual void Show() override; | |
122 virtual void Hide() override; | |
123 virtual gfx::Rect GetBounds() const override; | |
124 virtual void SetBounds(const gfx::Rect& bounds) override; | |
125 virtual gfx::Point GetLocationOnNativeScreen() const override; | |
126 virtual void SetCapture() override; | |
127 virtual void ReleaseCapture() override; | |
128 virtual void PostNativeEvent(const base::NativeEvent& native_event) override; | |
129 virtual void SetCursorNative(gfx::NativeCursor cursor) override; | |
130 virtual void MoveCursorToNative(const gfx::Point& location) override; | |
131 virtual void OnCursorVisibilityChangedNative(bool show) override; | |
132 | |
133 // ui::EventSource: | |
134 virtual ui::EventProcessor* GetEventProcessor() override; | |
135 | |
136 // ui::internal::RemoteInputMethodDelegateWin overrides: | |
137 virtual void CancelComposition() override; | |
138 virtual void OnTextInputClientUpdated( | |
139 const std::vector<int32>& input_scopes, | |
140 const std::vector<gfx::Rect>& composition_character_bounds) override; | |
141 | |
142 // Helper function to dispatch a keyboard message to the desired target. | |
143 // The default target is the WindowEventDispatcher. For nested message loop | |
144 // invocations we post a synthetic keyboard message directly into the message | |
145 // loop. The dispatcher for the nested loop would then decide how this | |
146 // message is routed. | |
147 void DispatchKeyboardMessage(ui::EventType type, | |
148 uint32 vkey, | |
149 uint32 repeat_count, | |
150 uint32 scan_code, | |
151 uint32 flags, | |
152 bool is_character); | |
153 | |
154 // Sets the event flags. |flags| is a bitmask of EventFlags. If there is a | |
155 // change the system virtual key state is updated as well. This way if chrome | |
156 // queries for key state it matches that of event being dispatched. | |
157 void SetEventFlags(uint32 flags); | |
158 | |
159 uint32 mouse_event_flags() const { | |
160 return event_flags_ & (ui::EF_LEFT_MOUSE_BUTTON | | |
161 ui::EF_MIDDLE_MOUSE_BUTTON | | |
162 ui::EF_RIGHT_MOUSE_BUTTON); | |
163 } | |
164 | |
165 uint32 key_event_flags() const { | |
166 return event_flags_ & (ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN | | |
167 ui::EF_ALT_DOWN | ui::EF_CAPS_LOCK_DOWN); | |
168 } | |
169 | |
170 HWND remote_window_; | |
171 IPC::Sender* host_; | |
172 scoped_ptr<ui::ViewProp> prop_; | |
173 | |
174 // Incremented if we need to ignore mouse messages until the SetCursorPos | |
175 // operation is acked by the viewer. | |
176 int ignore_mouse_moves_until_set_cursor_ack_; | |
177 | |
178 // Tracking last click event for synthetically generated mouse events. | |
179 scoped_ptr<ui::MouseEvent> last_mouse_click_event_; | |
180 | |
181 // State of the keyboard/mouse at the time of the last input event. See | |
182 // description of SetEventFlags(). | |
183 uint32 event_flags_; | |
184 | |
185 // Current size of this root window. | |
186 gfx::Size window_size_; | |
187 | |
188 DISALLOW_COPY_AND_ASSIGN(RemoteWindowTreeHostWin); | |
189 }; | |
190 | |
191 } // namespace aura | |
192 | |
193 #endif // UI_AURA_REMOTE_WINDOW_TREE_HOST_WIN_H_ | |
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