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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 <stdint.h> |
| 9 |
| 10 #include <vector> |
| 11 |
| 12 #include "base/compiler_specific.h" |
| 13 #include "base/macros.h" |
| 14 #include "base/strings/string16.h" |
| 15 #include "ui/aura/window_tree_host.h" |
| 16 #include "ui/base/ime/remote_input_method_delegate_win.h" |
| 17 #include "ui/events/event.h" |
| 18 #include "ui/events/event_constants.h" |
| 19 #include "ui/events/event_source.h" |
| 20 #include "ui/gfx/native_widget_types.h" |
| 21 #include "ui/metro_viewer/ime_types.h" |
| 22 |
| 23 struct MetroViewerHostMsg_MouseButtonParams; |
| 24 |
| 25 namespace base { |
| 26 class FilePath; |
| 27 } |
| 28 |
| 29 namespace ui { |
| 30 class RemoteInputMethodPrivateWin; |
| 31 class ViewProp; |
| 32 } |
| 33 |
| 34 namespace IPC { |
| 35 class Message; |
| 36 class Sender; |
| 37 } |
| 38 |
| 39 namespace aura { |
| 40 |
| 41 // WindowTreeHost implementaton that receives events from a different |
| 42 // process. In the case of Windows this is the Windows 8 (aka Metro) |
| 43 // frontend process, which forwards input events to this class. |
| 44 class AURA_EXPORT RemoteWindowTreeHostWin |
| 45 : public WindowTreeHost, |
| 46 public ui::internal::RemoteInputMethodDelegateWin { |
| 47 public: |
| 48 // Returns the current RemoteWindowTreeHostWin. This does *not* create a |
| 49 // RemoteWindowTreeHostWin. |
| 50 static RemoteWindowTreeHostWin* Instance(); |
| 51 |
| 52 // Returns true if there is a RemoteWindowTreeHostWin and it has a valid |
| 53 // HWND. A return value of false typically indicates we're not in metro mode. |
| 54 static bool IsValid(); |
| 55 |
| 56 // Sets the handle to the remote window. The |remote_window| is the actual |
| 57 // window owned by the viewer process. Call this before Connected() for some |
| 58 // customers like input method initialization which needs the handle. |
| 59 void SetRemoteWindowHandle(HWND remote_window); |
| 60 HWND remote_window() { return remote_window_; } |
| 61 |
| 62 // The |host| can be used when we need to send a message to it. |
| 63 void Connected(IPC::Sender* host); |
| 64 // Called when the remote process has closed its IPC connection. |
| 65 void Disconnected(); |
| 66 |
| 67 // Called when we have a message from the remote process. |
| 68 bool OnMessageReceived(const IPC::Message& message); |
| 69 |
| 70 void HandleOpenURLOnDesktop(const base::FilePath& shortcut, |
| 71 const base::string16& url); |
| 72 |
| 73 void HandleWindowSizeChanged(uint32_t width, uint32_t height); |
| 74 |
| 75 // Returns the active ASH root window. |
| 76 Window* GetAshWindow(); |
| 77 |
| 78 // Returns true if the remote window is the foreground window according to the |
| 79 // OS. |
| 80 bool IsForegroundWindow(); |
| 81 |
| 82 protected: |
| 83 RemoteWindowTreeHostWin(); |
| 84 ~RemoteWindowTreeHostWin() override; |
| 85 |
| 86 private: |
| 87 // IPC message handing methods: |
| 88 void OnMouseMoved(int32_t x, int32_t y, int32_t flags); |
| 89 void OnMouseButton(const MetroViewerHostMsg_MouseButtonParams& params); |
| 90 void OnKeyDown(uint32_t vkey, |
| 91 uint32_t repeat_count, |
| 92 uint32_t scan_code, |
| 93 uint32_t flags); |
| 94 void OnKeyUp(uint32_t vkey, |
| 95 uint32_t repeat_count, |
| 96 uint32_t scan_code, |
| 97 uint32_t flags); |
| 98 void OnChar(uint32_t key_code, |
| 99 uint32_t repeat_count, |
| 100 uint32_t scan_code, |
| 101 uint32_t flags); |
| 102 void OnWindowActivated(bool repaint); |
| 103 void OnEdgeGesture(); |
| 104 void OnTouchDown(int32_t x, |
| 105 int32_t y, |
| 106 uint64_t timestamp, |
| 107 uint32_t pointer_id); |
| 108 void OnTouchUp(int32_t x, int32_t y, uint64_t timestamp, uint32_t pointer_id); |
| 109 void OnTouchMoved(int32_t x, |
| 110 int32_t y, |
| 111 uint64_t timestamp, |
| 112 uint32_t pointer_id); |
| 113 void OnSetCursorPosAck(); |
| 114 |
| 115 // For Input Method support: |
| 116 ui::RemoteInputMethodPrivateWin* GetRemoteInputMethodPrivate(); |
| 117 void OnImeCandidatePopupChanged(bool visible); |
| 118 void OnImeCompositionChanged( |
| 119 const base::string16& text, |
| 120 int32_t selection_start, |
| 121 int32_t selection_end, |
| 122 const std::vector<metro_viewer::UnderlineInfo>& underlines); |
| 123 void OnImeTextCommitted(const base::string16& text); |
| 124 void OnImeInputSourceChanged(uint16_t language_id, bool is_ime); |
| 125 |
| 126 // WindowTreeHost overrides: |
| 127 ui::EventSource* GetEventSource() override; |
| 128 gfx::AcceleratedWidget GetAcceleratedWidget() override; |
| 129 void ShowImpl() override; |
| 130 void HideImpl() override; |
| 131 gfx::Rect GetBounds() const override; |
| 132 void SetBounds(const gfx::Rect& bounds) override; |
| 133 gfx::Point GetLocationOnNativeScreen() const override; |
| 134 void SetCapture() override; |
| 135 void ReleaseCapture() override; |
| 136 void SetCursorNative(gfx::NativeCursor cursor) override; |
| 137 void MoveCursorToNative(const gfx::Point& location) override; |
| 138 void OnCursorVisibilityChangedNative(bool show) override; |
| 139 |
| 140 // ui::internal::RemoteInputMethodDelegateWin overrides: |
| 141 void CancelComposition() override; |
| 142 void OnTextInputClientUpdated( |
| 143 const std::vector<int32_t>& input_scopes, |
| 144 const std::vector<gfx::Rect>& composition_character_bounds) override; |
| 145 |
| 146 // Helper function to dispatch a keyboard message to the desired target. |
| 147 // The default target is the WindowEventDispatcher. For nested message loop |
| 148 // invocations we post a synthetic keyboard message directly into the message |
| 149 // loop. The dispatcher for the nested loop would then decide how this |
| 150 // message is routed. |
| 151 void DispatchKeyboardMessage(ui::EventType type, |
| 152 uint32_t vkey, |
| 153 uint32_t repeat_count, |
| 154 uint32_t scan_code, |
| 155 uint32_t flags, |
| 156 bool is_character); |
| 157 |
| 158 // Sets the event flags. |flags| is a bitmask of EventFlags. If there is a |
| 159 // change the system virtual key state is updated as well. This way if chrome |
| 160 // queries for key state it matches that of event being dispatched. |
| 161 void SetEventFlags(uint32_t flags); |
| 162 |
| 163 uint32_t mouse_event_flags() const { |
| 164 return event_flags_ & (ui::EF_LEFT_MOUSE_BUTTON | |
| 165 ui::EF_MIDDLE_MOUSE_BUTTON | |
| 166 ui::EF_RIGHT_MOUSE_BUTTON); |
| 167 } |
| 168 |
| 169 uint32_t key_event_flags() const { |
| 170 return event_flags_ & (ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN | |
| 171 ui::EF_ALT_DOWN | ui::EF_CAPS_LOCK_ON); |
| 172 } |
| 173 |
| 174 HWND remote_window_; |
| 175 IPC::Sender* host_; |
| 176 scoped_ptr<ui::ViewProp> prop_; |
| 177 |
| 178 // Incremented if we need to ignore mouse messages until the SetCursorPos |
| 179 // operation is acked by the viewer. |
| 180 int ignore_mouse_moves_until_set_cursor_ack_; |
| 181 |
| 182 // Tracking last click event for synthetically generated mouse events. |
| 183 scoped_ptr<ui::MouseEvent> last_mouse_click_event_; |
| 184 |
| 185 // State of the keyboard/mouse at the time of the last input event. See |
| 186 // description of SetEventFlags(). |
| 187 uint32_t event_flags_; |
| 188 |
| 189 // Current size of this root window. |
| 190 gfx::Size window_size_; |
| 191 |
| 192 DISALLOW_COPY_AND_ASSIGN(RemoteWindowTreeHostWin); |
| 193 }; |
| 194 |
| 195 } // namespace aura |
| 196 |
| 197 #endif // UI_AURA_REMOTE_WINDOW_TREE_HOST_WIN_H_ |
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