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| 1 // Copyright 2014 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 #include "chrome/browser/chromeos/events/event_rewriter.h" | |
| 6 | |
| 7 #include <stddef.h> | |
| 8 | |
| 9 #include <vector> | |
| 10 | |
| 11 #include "ash/common/wm/window_state.h" | |
| 12 #include "ash/sticky_keys/sticky_keys_controller.h" | |
| 13 #include "ash/wm/window_util.h" | |
| 14 #include "base/command_line.h" | |
| 15 #include "base/logging.h" | |
| 16 #include "base/macros.h" | |
| 17 #include "base/strings/string_split.h" | |
| 18 #include "base/strings/string_util.h" | |
| 19 #include "base/sys_info.h" | |
| 20 #include "chrome/browser/chromeos/login/ui/login_display_host.h" | |
| 21 #include "chrome/browser/extensions/extension_commands_global_registry.h" | |
| 22 #include "chrome/browser/profiles/profile_manager.h" | |
| 23 #include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h" | |
| 24 #include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h" | |
| 25 #include "chrome/common/pref_names.h" | |
| 26 #include "chromeos/chromeos_switches.h" | |
| 27 #include "components/prefs/pref_service.h" | |
| 28 #include "components/user_manager/user_manager.h" | |
| 29 #include "ui/base/ime/chromeos/ime_keyboard.h" | |
| 30 #include "ui/base/ime/chromeos/input_method_manager.h" | |
| 31 #include "ui/events/devices/input_device_manager.h" | |
| 32 #include "ui/events/event.h" | |
| 33 #include "ui/events/event_utils.h" | |
| 34 #include "ui/events/keycodes/dom/dom_code.h" | |
| 35 #include "ui/events/keycodes/dom/dom_key.h" | |
| 36 #include "ui/events/keycodes/dom/keycode_converter.h" | |
| 37 #include "ui/events/keycodes/keyboard_code_conversion.h" | |
| 38 #include "ui/wm/core/window_util.h" | |
| 39 | |
| 40 #if defined(USE_X11) | |
| 41 #include <X11/extensions/XInput2.h> | |
| 42 #include <X11/Xlib.h> | |
| 43 | |
| 44 // Get rid of macros from Xlib.h that conflicts with other parts of the code. | |
| 45 #undef RootWindow | |
| 46 #undef Status | |
| 47 | |
| 48 #include "ui/base/x/x11_util.h" | |
| 49 #include "ui/events/keycodes/keyboard_code_conversion_x.h" | |
| 50 #endif | |
| 51 | |
| 52 namespace chromeos { | |
| 53 | |
| 54 namespace { | |
| 55 | |
| 56 // Hotrod controller vendor/product ids. | |
| 57 const int kHotrodRemoteVendorId = 0x0471; | |
| 58 const int kHotrodRemoteProductId = 0x21cc; | |
| 59 const int kUnknownVendorId = -1; | |
| 60 const int kUnknownProductId = -1; | |
| 61 | |
| 62 // Table of properties of remappable keys and/or remapping targets (not | |
| 63 // strictly limited to "modifiers"). | |
| 64 // | |
| 65 // This is used in two distinct ways: for rewriting key up/down events, | |
| 66 // and for rewriting modifier EventFlags on any kind of event. | |
| 67 // | |
| 68 // For the first case, rewriting key up/down events, |RewriteModifierKeys()| | |
| 69 // determines the preference name |prefs::kLanguageRemap...KeyTo| for the | |
| 70 // incoming key and, using |GetRemappedKey()|, gets the user preference | |
| 71 // value |input_method::k...Key| for the incoming key, and finally finds that | |
| 72 // value in this table to obtain the |result| properties of the target key. | |
| 73 // | |
| 74 // For the second case, rewriting modifier EventFlags, | |
| 75 // |GetRemappedModifierMasks()| processes every table entry whose |flag| | |
| 76 // is set in the incoming event. Using the |pref_name| in the table entry, | |
| 77 // it likewise uses |GetRemappedKey()| to find the properties of the | |
| 78 // user preference target key, and replaces the flag accordingly. | |
| 79 const struct ModifierRemapping { | |
| 80 int flag; | |
| 81 int remap_to; | |
| 82 const char* pref_name; | |
| 83 EventRewriter::MutableKeyState result; | |
| 84 } kModifierRemappings[] = { | |
| 85 {// kModifierRemappingCtrl references this entry by index. | |
| 86 ui::EF_CONTROL_DOWN, | |
| 87 input_method::kControlKey, | |
| 88 prefs::kLanguageRemapControlKeyTo, | |
| 89 {ui::EF_CONTROL_DOWN, ui::DomCode::CONTROL_LEFT, ui::DomKey::CONTROL, | |
| 90 ui::VKEY_CONTROL}}, | |
| 91 {// kModifierRemappingNeoMod3 references this entry by index. | |
| 92 ui::EF_MOD3_DOWN | ui::EF_ALTGR_DOWN, | |
| 93 input_method::kNumModifierKeys, | |
| 94 nullptr, | |
| 95 {ui::EF_MOD3_DOWN | ui::EF_ALTGR_DOWN, ui::DomCode::CAPS_LOCK, | |
| 96 ui::DomKey::ALT_GRAPH, ui::VKEY_ALTGR}}, | |
| 97 {ui::EF_COMMAND_DOWN, | |
| 98 input_method::kSearchKey, | |
| 99 prefs::kLanguageRemapSearchKeyTo, | |
| 100 {ui::EF_COMMAND_DOWN, ui::DomCode::META_LEFT, ui::DomKey::META, | |
| 101 ui::VKEY_LWIN}}, | |
| 102 {ui::EF_ALT_DOWN, | |
| 103 input_method::kAltKey, | |
| 104 prefs::kLanguageRemapAltKeyTo, | |
| 105 {ui::EF_ALT_DOWN, ui::DomCode::ALT_LEFT, ui::DomKey::ALT, ui::VKEY_MENU}}, | |
| 106 {ui::EF_NONE, | |
| 107 input_method::kVoidKey, | |
| 108 nullptr, | |
| 109 {ui::EF_NONE, ui::DomCode::NONE, ui::DomKey::NONE, ui::VKEY_UNKNOWN}}, | |
| 110 {ui::EF_MOD3_DOWN, | |
| 111 input_method::kCapsLockKey, | |
| 112 prefs::kLanguageRemapCapsLockKeyTo, | |
| 113 {ui::EF_MOD3_DOWN, ui::DomCode::CAPS_LOCK, ui::DomKey::CAPS_LOCK, | |
| 114 ui::VKEY_CAPITAL}}, | |
| 115 {ui::EF_NONE, | |
| 116 input_method::kEscapeKey, | |
| 117 prefs::kLanguageRemapEscapeKeyTo, | |
| 118 {ui::EF_NONE, ui::DomCode::ESCAPE, ui::DomKey::ESCAPE, ui::VKEY_ESCAPE}}, | |
| 119 {ui::EF_NONE, | |
| 120 input_method::kBackspaceKey, | |
| 121 prefs::kLanguageRemapBackspaceKeyTo, | |
| 122 {ui::EF_NONE, ui::DomCode::BACKSPACE, ui::DomKey::BACKSPACE, | |
| 123 ui::VKEY_BACK}}, | |
| 124 {ui::EF_NONE, | |
| 125 input_method::kNumModifierKeys, | |
| 126 prefs::kLanguageRemapDiamondKeyTo, | |
| 127 {ui::EF_NONE, ui::DomCode::F15, ui::DomKey::F15, ui::VKEY_F15}}}; | |
| 128 | |
| 129 const ModifierRemapping* kModifierRemappingCtrl = &kModifierRemappings[0]; | |
| 130 const ModifierRemapping* kModifierRemappingNeoMod3 = &kModifierRemappings[1]; | |
| 131 | |
| 132 // Gets a remapped key for |pref_name| key. For example, to find out which | |
| 133 // key Search is currently remapped to, call the function with | |
| 134 // prefs::kLanguageRemapSearchKeyTo. | |
| 135 const ModifierRemapping* GetRemappedKey(const std::string& pref_name, | |
| 136 const PrefService& pref_service) { | |
| 137 int value = -1; | |
| 138 // If we're at the login screen, try to get the pref from the global prefs | |
| 139 // dictionary. | |
| 140 if (!LoginDisplayHost::default_host() || | |
| 141 !LoginDisplayHost::default_host() | |
| 142 ->GetOobeUI() | |
| 143 ->signin_screen_handler() | |
| 144 ->GetKeyboardRemappedPrefValue(pref_name, &value)) { | |
| 145 if (!pref_service.FindPreference(pref_name)) | |
| 146 return nullptr; | |
| 147 value = pref_service.GetInteger(pref_name); | |
| 148 } | |
| 149 | |
| 150 for (size_t i = 0; i < arraysize(kModifierRemappings); ++i) { | |
| 151 if (value == kModifierRemappings[i].remap_to) | |
| 152 return &kModifierRemappings[i]; | |
| 153 } | |
| 154 return nullptr; | |
| 155 } | |
| 156 | |
| 157 bool HasDiamondKey() { | |
| 158 return base::CommandLine::ForCurrentProcess()->HasSwitch( | |
| 159 chromeos::switches::kHasChromeOSDiamondKey); | |
| 160 } | |
| 161 | |
| 162 bool IsISOLevel5ShiftUsedByCurrentInputMethod() { | |
| 163 // Since both German Neo2 XKB layout and Caps Lock depend on Mod3Mask, | |
| 164 // it's not possible to make both features work. For now, we don't remap | |
| 165 // Mod3Mask when Neo2 is in use. | |
| 166 // TODO(yusukes): Remove the restriction. | |
| 167 input_method::InputMethodManager* manager = | |
| 168 input_method::InputMethodManager::Get(); | |
| 169 return manager->IsISOLevel5ShiftUsedByCurrentInputMethod(); | |
| 170 } | |
| 171 | |
| 172 bool IsExtensionCommandRegistered(ui::KeyboardCode key_code, int flags) { | |
| 173 // Some keyboard events for ChromeOS get rewritten, such as: | |
| 174 // Search+Shift+Left gets converted to Shift+Home (BeginDocument). | |
| 175 // This doesn't make sense if the user has assigned that shortcut | |
| 176 // to an extension. Because: | |
| 177 // 1) The extension would, upon seeing a request for Ctrl+Shift+Home have | |
| 178 // to register for Shift+Home, instead. | |
| 179 // 2) The conversion is unnecessary, because Shift+Home (BeginDocument) isn't | |
| 180 // going to be executed. | |
| 181 // Therefore, we skip converting the accelerator if an extension has | |
| 182 // registered for this shortcut. | |
| 183 Profile* profile = ProfileManager::GetActiveUserProfile(); | |
| 184 if (!profile || !extensions::ExtensionCommandsGlobalRegistry::Get(profile)) | |
| 185 return false; | |
| 186 | |
| 187 int modifiers = flags & (ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN | | |
| 188 ui::EF_ALT_DOWN | ui::EF_COMMAND_DOWN); | |
| 189 ui::Accelerator accelerator(key_code, modifiers); | |
| 190 return extensions::ExtensionCommandsGlobalRegistry::Get(profile) | |
| 191 ->IsRegistered(accelerator); | |
| 192 } | |
| 193 | |
| 194 EventRewriter::DeviceType GetDeviceType(const std::string& device_name, | |
| 195 int vendor_id, | |
| 196 int product_id) { | |
| 197 if (vendor_id == kHotrodRemoteVendorId && | |
| 198 product_id == kHotrodRemoteProductId) { | |
| 199 return EventRewriter::kDeviceHotrodRemote; | |
| 200 } | |
| 201 | |
| 202 if (base::LowerCaseEqualsASCII(device_name, "virtual core keyboard")) | |
| 203 return EventRewriter::kDeviceVirtualCoreKeyboard; | |
| 204 | |
| 205 std::vector<std::string> tokens = base::SplitString( | |
| 206 device_name, " .", base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY); | |
| 207 | |
| 208 // If the |device_name| contains the two words, "apple" and "keyboard", treat | |
| 209 // it as an Apple keyboard. | |
| 210 bool found_apple = false; | |
| 211 bool found_keyboard = false; | |
| 212 for (size_t i = 0; i < tokens.size(); ++i) { | |
| 213 if (!found_apple && base::LowerCaseEqualsASCII(tokens[i], "apple")) | |
| 214 found_apple = true; | |
| 215 if (!found_keyboard && base::LowerCaseEqualsASCII(tokens[i], "keyboard")) | |
| 216 found_keyboard = true; | |
| 217 if (found_apple && found_keyboard) | |
| 218 return EventRewriter::kDeviceAppleKeyboard; | |
| 219 } | |
| 220 | |
| 221 return EventRewriter::kDeviceUnknown; | |
| 222 } | |
| 223 | |
| 224 struct KeyboardRemapping { | |
| 225 // MatchKeyboardRemapping() succeeds if the tested has all of the specified | |
| 226 // flags (and possibly other flags), and either the key_code matches or the | |
| 227 // condition's key_code is VKEY_UNKNOWN. | |
| 228 struct Condition { | |
| 229 int flags; | |
| 230 ui::KeyboardCode key_code; | |
| 231 } condition; | |
| 232 // ApplyRemapping(), which is the primary user of this structure, | |
| 233 // conditionally sets the output fields from the |result| here. | |
| 234 // - |dom_code| is set if |result.dom_code| is not NONE. | |
| 235 // - |dom_key| and |character| are set if |result.dom_key| is not NONE. | |
| 236 // -|key_code| is set if |result.key_code| is not VKEY_UNKNOWN. | |
| 237 // - |flags| are always set from |result.flags|, but this can be |EF_NONE|. | |
| 238 EventRewriter::MutableKeyState result; | |
| 239 }; | |
| 240 | |
| 241 bool MatchKeyboardRemapping(const EventRewriter::MutableKeyState& suspect, | |
| 242 const KeyboardRemapping::Condition& test) { | |
| 243 return ((test.key_code == ui::VKEY_UNKNOWN) || | |
| 244 (test.key_code == suspect.key_code)) && | |
| 245 ((suspect.flags & test.flags) == test.flags); | |
| 246 } | |
| 247 | |
| 248 void ApplyRemapping(const EventRewriter::MutableKeyState& changes, | |
| 249 EventRewriter::MutableKeyState* state) { | |
| 250 state->flags |= changes.flags; | |
| 251 if (changes.code != ui::DomCode::NONE) | |
| 252 state->code = changes.code; | |
| 253 if (changes.key != ui::DomKey::NONE) | |
| 254 state->key = changes.key; | |
| 255 if (changes.key_code != ui::VKEY_UNKNOWN) | |
| 256 state->key_code = changes.key_code; | |
| 257 } | |
| 258 | |
| 259 // Given a set of KeyboardRemapping structs, finds a matching struct | |
| 260 // if possible, and updates the remapped event values. Returns true if a | |
| 261 // remapping was found and remapped values were updated. | |
| 262 bool RewriteWithKeyboardRemappings( | |
| 263 const KeyboardRemapping* mappings, | |
| 264 size_t num_mappings, | |
| 265 const EventRewriter::MutableKeyState& input_state, | |
| 266 EventRewriter::MutableKeyState* remapped_state) { | |
| 267 for (size_t i = 0; i < num_mappings; ++i) { | |
| 268 const KeyboardRemapping& map = mappings[i]; | |
| 269 if (MatchKeyboardRemapping(input_state, map.condition)) { | |
| 270 remapped_state->flags = (input_state.flags & ~map.condition.flags); | |
| 271 ApplyRemapping(map.result, remapped_state); | |
| 272 return true; | |
| 273 } | |
| 274 } | |
| 275 return false; | |
| 276 } | |
| 277 | |
| 278 void SetMeaningForLayout(ui::EventType type, | |
| 279 EventRewriter::MutableKeyState* state) { | |
| 280 // Currently layout is applied by creating a temporary key event with the | |
| 281 // current physical state, and extracting the layout results. | |
| 282 ui::KeyEvent key(type, state->key_code, state->code, state->flags); | |
| 283 state->key = key.GetDomKey(); | |
| 284 } | |
| 285 | |
| 286 ui::DomCode RelocateModifier(ui::DomCode code, ui::DomKeyLocation location) { | |
| 287 bool right = (location == ui::DomKeyLocation::RIGHT); | |
| 288 switch (code) { | |
| 289 case ui::DomCode::CONTROL_LEFT: | |
| 290 case ui::DomCode::CONTROL_RIGHT: | |
| 291 return right ? ui::DomCode::CONTROL_RIGHT : ui::DomCode::CONTROL_LEFT; | |
| 292 case ui::DomCode::SHIFT_LEFT: | |
| 293 case ui::DomCode::SHIFT_RIGHT: | |
| 294 return right ? ui::DomCode::SHIFT_RIGHT : ui::DomCode::SHIFT_LEFT; | |
| 295 case ui::DomCode::ALT_LEFT: | |
| 296 case ui::DomCode::ALT_RIGHT: | |
| 297 return right ? ui::DomCode::ALT_RIGHT : ui::DomCode::ALT_LEFT; | |
| 298 case ui::DomCode::META_LEFT: | |
| 299 case ui::DomCode::META_RIGHT: | |
| 300 return right ? ui::DomCode::META_RIGHT : ui::DomCode::META_LEFT; | |
| 301 default: | |
| 302 break; | |
| 303 } | |
| 304 return code; | |
| 305 } | |
| 306 | |
| 307 } // namespace | |
| 308 | |
| 309 EventRewriter::EventRewriter(ash::StickyKeysController* sticky_keys_controller) | |
| 310 : last_keyboard_device_id_(ui::ED_UNKNOWN_DEVICE), | |
| 311 ime_keyboard_for_testing_(NULL), | |
| 312 pref_service_for_testing_(NULL), | |
| 313 sticky_keys_controller_(sticky_keys_controller), | |
| 314 pressed_modifier_latches_(ui::EF_NONE), | |
| 315 latched_modifier_latches_(ui::EF_NONE), | |
| 316 used_modifier_latches_(ui::EF_NONE) {} | |
| 317 | |
| 318 EventRewriter::~EventRewriter() {} | |
| 319 | |
| 320 EventRewriter::DeviceType EventRewriter::KeyboardDeviceAddedForTesting( | |
| 321 int device_id, | |
| 322 const std::string& device_name) { | |
| 323 // Tests must avoid XI2 reserved device IDs. | |
| 324 DCHECK((device_id < 0) || (device_id > 1)); | |
| 325 return KeyboardDeviceAddedInternal(device_id, device_name, kUnknownVendorId, | |
| 326 kUnknownProductId); | |
| 327 } | |
| 328 | |
| 329 void EventRewriter::RewriteMouseButtonEventForTesting( | |
| 330 const ui::MouseEvent& event, | |
| 331 std::unique_ptr<ui::Event>* rewritten_event) { | |
| 332 RewriteMouseButtonEvent(event, rewritten_event); | |
| 333 } | |
| 334 | |
| 335 ui::EventRewriteStatus EventRewriter::RewriteEvent( | |
| 336 const ui::Event& event, | |
| 337 std::unique_ptr<ui::Event>* rewritten_event) { | |
| 338 if ((event.type() == ui::ET_KEY_PRESSED) || | |
| 339 (event.type() == ui::ET_KEY_RELEASED)) { | |
| 340 return RewriteKeyEvent(static_cast<const ui::KeyEvent&>(event), | |
| 341 rewritten_event); | |
| 342 } | |
| 343 if ((event.type() == ui::ET_MOUSE_PRESSED) || | |
| 344 (event.type() == ui::ET_MOUSE_RELEASED)) { | |
| 345 return RewriteMouseButtonEvent(static_cast<const ui::MouseEvent&>(event), | |
| 346 rewritten_event); | |
| 347 } | |
| 348 if (event.type() == ui::ET_MOUSEWHEEL) { | |
| 349 return RewriteMouseWheelEvent( | |
| 350 static_cast<const ui::MouseWheelEvent&>(event), rewritten_event); | |
| 351 } | |
| 352 if ((event.type() == ui::ET_TOUCH_PRESSED) || | |
| 353 (event.type() == ui::ET_TOUCH_RELEASED)) { | |
| 354 return RewriteTouchEvent(static_cast<const ui::TouchEvent&>(event), | |
| 355 rewritten_event); | |
| 356 } | |
| 357 if (event.IsScrollEvent()) { | |
| 358 return RewriteScrollEvent(static_cast<const ui::ScrollEvent&>(event), | |
| 359 rewritten_event); | |
| 360 } | |
| 361 return ui::EVENT_REWRITE_CONTINUE; | |
| 362 } | |
| 363 | |
| 364 ui::EventRewriteStatus EventRewriter::NextDispatchEvent( | |
| 365 const ui::Event& last_event, | |
| 366 std::unique_ptr<ui::Event>* new_event) { | |
| 367 if (sticky_keys_controller_) { | |
| 368 // In the case of sticky keys, we know what the events obtained here are: | |
| 369 // modifier key releases that match the ones previously discarded. So, we | |
| 370 // know that they don't have to be passed through the post-sticky key | |
| 371 // rewriting phases, |RewriteExtendedKeys()| and |RewriteFunctionKeys()|, | |
| 372 // because those phases do nothing with modifier key releases. | |
| 373 return sticky_keys_controller_->NextDispatchEvent(new_event); | |
| 374 } | |
| 375 NOTREACHED(); | |
| 376 return ui::EVENT_REWRITE_CONTINUE; | |
| 377 } | |
| 378 | |
| 379 void EventRewriter::BuildRewrittenKeyEvent( | |
| 380 const ui::KeyEvent& key_event, | |
| 381 const MutableKeyState& state, | |
| 382 std::unique_ptr<ui::Event>* rewritten_event) { | |
| 383 ui::KeyEvent* rewritten_key_event = | |
| 384 new ui::KeyEvent(key_event.type(), state.key_code, state.code, | |
| 385 state.flags, state.key, key_event.time_stamp()); | |
| 386 rewritten_event->reset(rewritten_key_event); | |
| 387 } | |
| 388 | |
| 389 void EventRewriter::DeviceKeyPressedOrReleased(int device_id) { | |
| 390 std::map<int, DeviceType>::const_iterator iter = | |
| 391 device_id_to_type_.find(device_id); | |
| 392 DeviceType type; | |
| 393 if (iter != device_id_to_type_.end()) | |
| 394 type = iter->second; | |
| 395 else | |
| 396 type = KeyboardDeviceAdded(device_id); | |
| 397 | |
| 398 // Ignore virtual Xorg keyboard (magic that generates key repeat | |
| 399 // events). Pretend that the previous real keyboard is the one that is still | |
| 400 // in use. | |
| 401 if (type == kDeviceVirtualCoreKeyboard) | |
| 402 return; | |
| 403 | |
| 404 last_keyboard_device_id_ = device_id; | |
| 405 } | |
| 406 | |
| 407 const PrefService* EventRewriter::GetPrefService() const { | |
| 408 if (pref_service_for_testing_) | |
| 409 return pref_service_for_testing_; | |
| 410 Profile* profile = ProfileManager::GetActiveUserProfile(); | |
| 411 return profile ? profile->GetPrefs() : NULL; | |
| 412 } | |
| 413 | |
| 414 bool EventRewriter::IsAppleKeyboard() const { | |
| 415 return IsLastKeyboardOfType(kDeviceAppleKeyboard); | |
| 416 } | |
| 417 | |
| 418 bool EventRewriter::IsHotrodRemote() const { | |
| 419 return IsLastKeyboardOfType(kDeviceHotrodRemote); | |
| 420 } | |
| 421 | |
| 422 bool EventRewriter::IsLastKeyboardOfType(DeviceType device_type) const { | |
| 423 if (last_keyboard_device_id_ == ui::ED_UNKNOWN_DEVICE) | |
| 424 return false; | |
| 425 | |
| 426 // Check which device generated |event|. | |
| 427 std::map<int, DeviceType>::const_iterator iter = | |
| 428 device_id_to_type_.find(last_keyboard_device_id_); | |
| 429 if (iter == device_id_to_type_.end()) { | |
| 430 LOG(ERROR) << "Device ID " << last_keyboard_device_id_ << " is unknown."; | |
| 431 return false; | |
| 432 } | |
| 433 | |
| 434 const DeviceType type = iter->second; | |
| 435 return type == device_type; | |
| 436 } | |
| 437 | |
| 438 bool EventRewriter::TopRowKeysAreFunctionKeys(const ui::KeyEvent& event) const { | |
| 439 const PrefService* prefs = GetPrefService(); | |
| 440 return prefs && prefs->FindPreference(prefs::kLanguageSendFunctionKeys) && | |
| 441 prefs->GetBoolean(prefs::kLanguageSendFunctionKeys); | |
| 442 } | |
| 443 | |
| 444 int EventRewriter::GetRemappedModifierMasks(const PrefService& pref_service, | |
| 445 const ui::Event& event, | |
| 446 int original_flags) const { | |
| 447 int unmodified_flags = original_flags; | |
| 448 int rewritten_flags = pressed_modifier_latches_ | latched_modifier_latches_; | |
| 449 for (size_t i = 0; unmodified_flags && (i < arraysize(kModifierRemappings)); | |
| 450 ++i) { | |
| 451 const ModifierRemapping* remapped_key = NULL; | |
| 452 if (!(unmodified_flags & kModifierRemappings[i].flag)) | |
| 453 continue; | |
| 454 switch (kModifierRemappings[i].flag) { | |
| 455 case ui::EF_COMMAND_DOWN: | |
| 456 // Rewrite Command key presses on an Apple keyboard to Control. | |
| 457 if (IsAppleKeyboard()) { | |
| 458 DCHECK_EQ(ui::EF_CONTROL_DOWN, kModifierRemappingCtrl->flag); | |
| 459 remapped_key = kModifierRemappingCtrl; | |
| 460 } | |
| 461 break; | |
| 462 case ui::EF_MOD3_DOWN: | |
| 463 // If EF_MOD3_DOWN is used by the current input method, leave it alone; | |
| 464 // it is not remappable. | |
| 465 if (IsISOLevel5ShiftUsedByCurrentInputMethod()) | |
| 466 continue; | |
| 467 // Otherwise, Mod3Mask is set on X events when the Caps Lock key | |
| 468 // is down, but, if Caps Lock is remapped, CapsLock is NOT set, | |
| 469 // because pressing the key does not invoke caps lock. So, the | |
| 470 // kModifierRemappings[] table uses EF_MOD3_DOWN for the Caps | |
| 471 // Lock remapping. | |
| 472 break; | |
| 473 case ui::EF_MOD3_DOWN | ui::EF_ALTGR_DOWN: | |
| 474 if ((original_flags & ui::EF_ALTGR_DOWN) && | |
| 475 IsISOLevel5ShiftUsedByCurrentInputMethod()) { | |
| 476 remapped_key = kModifierRemappingNeoMod3; | |
| 477 } | |
| 478 break; | |
| 479 default: | |
| 480 break; | |
| 481 } | |
| 482 if (!remapped_key && kModifierRemappings[i].pref_name) { | |
| 483 remapped_key = | |
| 484 GetRemappedKey(kModifierRemappings[i].pref_name, pref_service); | |
| 485 } | |
| 486 if (remapped_key) { | |
| 487 unmodified_flags &= ~kModifierRemappings[i].flag; | |
| 488 rewritten_flags |= remapped_key->flag; | |
| 489 } | |
| 490 } | |
| 491 return rewritten_flags | unmodified_flags; | |
| 492 } | |
| 493 | |
| 494 ui::EventRewriteStatus EventRewriter::RewriteKeyEvent( | |
| 495 const ui::KeyEvent& key_event, | |
| 496 std::unique_ptr<ui::Event>* rewritten_event) { | |
| 497 if (IsExtensionCommandRegistered(key_event.key_code(), key_event.flags())) | |
| 498 return ui::EVENT_REWRITE_CONTINUE; | |
| 499 if (key_event.source_device_id() != ui::ED_UNKNOWN_DEVICE) | |
| 500 DeviceKeyPressedOrReleased(key_event.source_device_id()); | |
| 501 | |
| 502 // Drop repeated keys from Hotrod remote. | |
| 503 if ((key_event.flags() & ui::EF_IS_REPEAT) && | |
| 504 (key_event.type() == ui::ET_KEY_PRESSED) && IsHotrodRemote() && | |
| 505 key_event.key_code() != ui::VKEY_BACK) { | |
| 506 return ui::EVENT_REWRITE_DISCARD; | |
| 507 } | |
| 508 | |
| 509 MutableKeyState state = {key_event.flags(), key_event.code(), | |
| 510 key_event.GetDomKey(), key_event.key_code()}; | |
| 511 | |
| 512 // Do not rewrite an event sent by ui_controls::SendKeyPress(). See | |
| 513 // crbug.com/136465. | |
| 514 if (!(key_event.flags() & ui::EF_FINAL)) { | |
| 515 if (RewriteModifierKeys(key_event, &state)) { | |
| 516 // Early exit with completed event. | |
| 517 BuildRewrittenKeyEvent(key_event, state, rewritten_event); | |
| 518 return ui::EVENT_REWRITE_REWRITTEN; | |
| 519 } | |
| 520 RewriteNumPadKeys(key_event, &state); | |
| 521 } | |
| 522 | |
| 523 ui::EventRewriteStatus status = ui::EVENT_REWRITE_CONTINUE; | |
| 524 bool is_sticky_key_extension_command = false; | |
| 525 if (sticky_keys_controller_) { | |
| 526 status = sticky_keys_controller_->RewriteKeyEvent(key_event, state.key_code, | |
| 527 &state.flags); | |
| 528 if (status == ui::EVENT_REWRITE_DISCARD) | |
| 529 return ui::EVENT_REWRITE_DISCARD; | |
| 530 is_sticky_key_extension_command = | |
| 531 IsExtensionCommandRegistered(state.key_code, state.flags); | |
| 532 } | |
| 533 | |
| 534 // If flags have changed, this may change the interpretation of the key, | |
| 535 // so reapply layout. | |
| 536 if (state.flags != key_event.flags()) | |
| 537 SetMeaningForLayout(key_event.type(), &state); | |
| 538 | |
| 539 // If sticky key rewrites the event, and it matches an extension command, do | |
| 540 // not further rewrite the event since it won't match the extension command | |
| 541 // thereafter. | |
| 542 if (!is_sticky_key_extension_command && !(key_event.flags() & ui::EF_FINAL)) { | |
| 543 RewriteExtendedKeys(key_event, &state); | |
| 544 RewriteFunctionKeys(key_event, &state); | |
| 545 } | |
| 546 if ((key_event.flags() == state.flags) && | |
| 547 (key_event.key_code() == state.key_code) && | |
| 548 #if defined(USE_X11) | |
| 549 // TODO(kpschoedel): This test is present because several consumers of | |
| 550 // key events depend on having a native core X11 event, so we rewrite | |
| 551 // all XI2 key events (GenericEvent) into corresponding core X11 key | |
| 552 // events. Remove this when event consumers no longer care about | |
| 553 // native X11 event details (crbug.com/380349). | |
| 554 (!key_event.HasNativeEvent() || | |
| 555 (key_event.native_event()->type != GenericEvent)) && | |
| 556 #endif | |
| 557 (status == ui::EVENT_REWRITE_CONTINUE)) { | |
| 558 return ui::EVENT_REWRITE_CONTINUE; | |
| 559 } | |
| 560 // Sticky keys may have returned a result other than |EVENT_REWRITE_CONTINUE|, | |
| 561 // in which case we need to preserve that return status. Alternatively, we | |
| 562 // might be here because key_event changed, in which case we need to | |
| 563 // return |EVENT_REWRITE_REWRITTEN|. | |
| 564 if (status == ui::EVENT_REWRITE_CONTINUE) | |
| 565 status = ui::EVENT_REWRITE_REWRITTEN; | |
| 566 BuildRewrittenKeyEvent(key_event, state, rewritten_event); | |
| 567 return status; | |
| 568 } | |
| 569 | |
| 570 ui::EventRewriteStatus EventRewriter::RewriteMouseButtonEvent( | |
| 571 const ui::MouseEvent& mouse_event, | |
| 572 std::unique_ptr<ui::Event>* rewritten_event) { | |
| 573 int flags = mouse_event.flags(); | |
| 574 RewriteLocatedEvent(mouse_event, &flags); | |
| 575 ui::EventRewriteStatus status = ui::EVENT_REWRITE_CONTINUE; | |
| 576 if (sticky_keys_controller_) | |
| 577 status = sticky_keys_controller_->RewriteMouseEvent(mouse_event, &flags); | |
| 578 int changed_button = ui::EF_NONE; | |
| 579 if ((mouse_event.type() == ui::ET_MOUSE_PRESSED) || | |
| 580 (mouse_event.type() == ui::ET_MOUSE_RELEASED)) { | |
| 581 changed_button = RewriteModifierClick(mouse_event, &flags); | |
| 582 } | |
| 583 if ((mouse_event.flags() == flags) && | |
| 584 (status == ui::EVENT_REWRITE_CONTINUE)) { | |
| 585 return ui::EVENT_REWRITE_CONTINUE; | |
| 586 } | |
| 587 if (status == ui::EVENT_REWRITE_CONTINUE) | |
| 588 status = ui::EVENT_REWRITE_REWRITTEN; | |
| 589 ui::MouseEvent* rewritten_mouse_event = new ui::MouseEvent(mouse_event); | |
| 590 rewritten_event->reset(rewritten_mouse_event); | |
| 591 rewritten_mouse_event->set_flags(flags); | |
| 592 #if defined(USE_X11) | |
| 593 ui::UpdateX11EventForFlags(rewritten_mouse_event); | |
| 594 #endif | |
| 595 if (changed_button != ui::EF_NONE) { | |
| 596 rewritten_mouse_event->set_changed_button_flags(changed_button); | |
| 597 #if defined(USE_X11) | |
| 598 ui::UpdateX11EventForChangedButtonFlags(rewritten_mouse_event); | |
| 599 #endif | |
| 600 } | |
| 601 return status; | |
| 602 } | |
| 603 | |
| 604 ui::EventRewriteStatus EventRewriter::RewriteMouseWheelEvent( | |
| 605 const ui::MouseWheelEvent& wheel_event, | |
| 606 std::unique_ptr<ui::Event>* rewritten_event) { | |
| 607 if (!sticky_keys_controller_) | |
| 608 return ui::EVENT_REWRITE_CONTINUE; | |
| 609 int flags = wheel_event.flags(); | |
| 610 RewriteLocatedEvent(wheel_event, &flags); | |
| 611 ui::EventRewriteStatus status = | |
| 612 sticky_keys_controller_->RewriteMouseEvent(wheel_event, &flags); | |
| 613 if ((wheel_event.flags() == flags) && | |
| 614 (status == ui::EVENT_REWRITE_CONTINUE)) { | |
| 615 return ui::EVENT_REWRITE_CONTINUE; | |
| 616 } | |
| 617 if (status == ui::EVENT_REWRITE_CONTINUE) | |
| 618 status = ui::EVENT_REWRITE_REWRITTEN; | |
| 619 ui::MouseWheelEvent* rewritten_wheel_event = | |
| 620 new ui::MouseWheelEvent(wheel_event); | |
| 621 rewritten_event->reset(rewritten_wheel_event); | |
| 622 rewritten_wheel_event->set_flags(flags); | |
| 623 #if defined(USE_X11) | |
| 624 ui::UpdateX11EventForFlags(rewritten_wheel_event); | |
| 625 #endif | |
| 626 return status; | |
| 627 } | |
| 628 | |
| 629 ui::EventRewriteStatus EventRewriter::RewriteTouchEvent( | |
| 630 const ui::TouchEvent& touch_event, | |
| 631 std::unique_ptr<ui::Event>* rewritten_event) { | |
| 632 int flags = touch_event.flags(); | |
| 633 RewriteLocatedEvent(touch_event, &flags); | |
| 634 if (touch_event.flags() == flags) | |
| 635 return ui::EVENT_REWRITE_CONTINUE; | |
| 636 ui::TouchEvent* rewritten_touch_event = new ui::TouchEvent(touch_event); | |
| 637 rewritten_event->reset(rewritten_touch_event); | |
| 638 rewritten_touch_event->set_flags(flags); | |
| 639 #if defined(USE_X11) | |
| 640 ui::UpdateX11EventForFlags(rewritten_touch_event); | |
| 641 #endif | |
| 642 return ui::EVENT_REWRITE_REWRITTEN; | |
| 643 } | |
| 644 | |
| 645 ui::EventRewriteStatus EventRewriter::RewriteScrollEvent( | |
| 646 const ui::ScrollEvent& scroll_event, | |
| 647 std::unique_ptr<ui::Event>* rewritten_event) { | |
| 648 int flags = scroll_event.flags(); | |
| 649 ui::EventRewriteStatus status = ui::EVENT_REWRITE_CONTINUE; | |
| 650 if (sticky_keys_controller_) | |
| 651 status = sticky_keys_controller_->RewriteScrollEvent(scroll_event, &flags); | |
| 652 if (status == ui::EVENT_REWRITE_CONTINUE) | |
| 653 return status; | |
| 654 ui::ScrollEvent* rewritten_scroll_event = new ui::ScrollEvent(scroll_event); | |
| 655 rewritten_event->reset(rewritten_scroll_event); | |
| 656 rewritten_scroll_event->set_flags(flags); | |
| 657 #if defined(USE_X11) | |
| 658 ui::UpdateX11EventForFlags(rewritten_scroll_event); | |
| 659 #endif | |
| 660 return status; | |
| 661 } | |
| 662 | |
| 663 bool EventRewriter::RewriteModifierKeys(const ui::KeyEvent& key_event, | |
| 664 MutableKeyState* state) { | |
| 665 DCHECK(key_event.type() == ui::ET_KEY_PRESSED || | |
| 666 key_event.type() == ui::ET_KEY_RELEASED); | |
| 667 | |
| 668 // Do nothing if we have just logged in as guest but have not restarted chrome | |
| 669 // process yet (so we are still on the login screen). In this situations we | |
| 670 // have no user profile so can not do anything useful. | |
| 671 // Note that currently, unlike other accounts, when user logs in as guest, we | |
| 672 // restart chrome process. In future this is to be changed. | |
| 673 // TODO(glotov): remove the following condition when we do not restart chrome | |
| 674 // when user logs in as guest. | |
| 675 // TODO(kpschoedel): check whether this is still necessary. | |
| 676 if (user_manager::UserManager::Get()->IsLoggedInAsGuest() && | |
| 677 LoginDisplayHost::default_host()) | |
| 678 return false; | |
| 679 | |
| 680 const PrefService* pref_service = GetPrefService(); | |
| 681 if (!pref_service) | |
| 682 return false; | |
| 683 | |
| 684 // Preserve a copy of the original before rewriting |state| based on | |
| 685 // user preferences, device configuration, and certain IME properties. | |
| 686 MutableKeyState incoming = *state; | |
| 687 state->flags = ui::EF_NONE; | |
| 688 int characteristic_flag = ui::EF_NONE; | |
| 689 bool exact_event = false; | |
| 690 | |
| 691 // First, remap the key code. | |
| 692 const ModifierRemapping* remapped_key = NULL; | |
| 693 // Remapping based on DomKey. | |
| 694 switch (incoming.key) { | |
| 695 // On Chrome OS, F15 (XF86XK_Launch6) with NumLock (Mod2Mask) is sent | |
| 696 // when Diamond key is pressed. | |
| 697 case ui::DomKey::F15: | |
| 698 // When diamond key is not available, the configuration UI for Diamond | |
| 699 // key is not shown. Therefore, ignore the kLanguageRemapDiamondKeyTo | |
| 700 // syncable pref. | |
| 701 if (HasDiamondKey()) | |
| 702 remapped_key = | |
| 703 GetRemappedKey(prefs::kLanguageRemapDiamondKeyTo, *pref_service); | |
| 704 // Default behavior of F15 is Control, even if --has-chromeos-diamond-key | |
| 705 // is absent, according to unit test comments. | |
| 706 if (!remapped_key) { | |
| 707 DCHECK_EQ(ui::VKEY_CONTROL, kModifierRemappingCtrl->result.key_code); | |
| 708 remapped_key = kModifierRemappingCtrl; | |
| 709 } | |
| 710 break; | |
| 711 case ui::DomKey::ALT_GRAPH: | |
| 712 // The Neo2 codes modifiers such that CapsLock appears as VKEY_ALTGR, | |
| 713 // but AltGraph (right Alt) also appears as VKEY_ALTGR in Neo2, | |
| 714 // as it does in other layouts. Neo2's "Mod3" is represented in | |
| 715 // EventFlags by a combination of AltGr+Mod3, while its "Mod4" is | |
| 716 // AltGr alone. | |
| 717 if (IsISOLevel5ShiftUsedByCurrentInputMethod()) { | |
| 718 if (incoming.code == ui::DomCode::CAPS_LOCK) { | |
| 719 characteristic_flag = ui::EF_ALTGR_DOWN | ui::EF_MOD3_DOWN; | |
| 720 remapped_key = | |
| 721 GetRemappedKey(prefs::kLanguageRemapCapsLockKeyTo, *pref_service); | |
| 722 } else { | |
| 723 characteristic_flag = ui::EF_ALTGR_DOWN; | |
| 724 remapped_key = | |
| 725 GetRemappedKey(prefs::kLanguageRemapSearchKeyTo, *pref_service); | |
| 726 } | |
| 727 } | |
| 728 if (remapped_key && remapped_key->result.key_code == ui::VKEY_CAPITAL) | |
| 729 remapped_key = kModifierRemappingNeoMod3; | |
| 730 break; | |
| 731 #if !defined(USE_X11) | |
| 732 case ui::DomKey::ALT_GRAPH_LATCH: | |
| 733 if (key_event.type() == ui::ET_KEY_PRESSED) { | |
| 734 pressed_modifier_latches_ |= ui::EF_ALTGR_DOWN; | |
| 735 } else { | |
| 736 pressed_modifier_latches_ &= ~ui::EF_ALTGR_DOWN; | |
| 737 if (used_modifier_latches_ & ui::EF_ALTGR_DOWN) | |
| 738 used_modifier_latches_ &= ~ui::EF_ALTGR_DOWN; | |
| 739 else | |
| 740 latched_modifier_latches_ |= ui::EF_ALTGR_DOWN; | |
| 741 } | |
| 742 // Rewrite to AltGraph. When this key is used like a regular modifier, | |
| 743 // the web-exposed result looks like a use of the regular modifier. | |
| 744 // When it's used as a latch, the web-exposed result is a vacuous | |
| 745 // modifier press-and-release, which should be harmless, but preserves | |
| 746 // the event for applications using the |code| (e.g. remoting). | |
| 747 state->key = ui::DomKey::ALT_GRAPH; | |
| 748 state->key_code = ui::VKEY_ALTGR; | |
| 749 exact_event = true; | |
| 750 break; | |
| 751 #endif | |
| 752 default: | |
| 753 break; | |
| 754 } | |
| 755 | |
| 756 // Remapping based on DomCode. | |
| 757 switch (incoming.code) { | |
| 758 // On Chrome OS, XF86XK_Launch7 (F16) with Mod3Mask is sent when Caps Lock | |
| 759 // is pressed (with one exception: when | |
| 760 // IsISOLevel5ShiftUsedByCurrentInputMethod() is true, the key generates | |
| 761 // XK_ISO_Level3_Shift with Mod3Mask, not XF86XK_Launch7). | |
| 762 case ui::DomCode::F16: | |
| 763 case ui::DomCode::CAPS_LOCK: | |
| 764 characteristic_flag = ui::EF_CAPS_LOCK_ON; | |
| 765 remapped_key = | |
| 766 GetRemappedKey(prefs::kLanguageRemapCapsLockKeyTo, *pref_service); | |
| 767 break; | |
| 768 case ui::DomCode::META_LEFT: | |
| 769 case ui::DomCode::META_RIGHT: | |
| 770 characteristic_flag = ui::EF_COMMAND_DOWN; | |
| 771 // Rewrite Command-L/R key presses on an Apple keyboard to Control. | |
| 772 if (IsAppleKeyboard()) { | |
| 773 DCHECK_EQ(ui::VKEY_CONTROL, kModifierRemappingCtrl->result.key_code); | |
| 774 remapped_key = kModifierRemappingCtrl; | |
| 775 } else { | |
| 776 remapped_key = | |
| 777 GetRemappedKey(prefs::kLanguageRemapSearchKeyTo, *pref_service); | |
| 778 } | |
| 779 // Default behavior is Super key, hence don't remap the event if the pref | |
| 780 // is unavailable. | |
| 781 break; | |
| 782 case ui::DomCode::CONTROL_LEFT: | |
| 783 case ui::DomCode::CONTROL_RIGHT: | |
| 784 characteristic_flag = ui::EF_CONTROL_DOWN; | |
| 785 remapped_key = | |
| 786 GetRemappedKey(prefs::kLanguageRemapControlKeyTo, *pref_service); | |
| 787 break; | |
| 788 case ui::DomCode::ALT_LEFT: | |
| 789 case ui::DomCode::ALT_RIGHT: | |
| 790 // ALT key | |
| 791 characteristic_flag = ui::EF_ALT_DOWN; | |
| 792 remapped_key = | |
| 793 GetRemappedKey(prefs::kLanguageRemapAltKeyTo, *pref_service); | |
| 794 break; | |
| 795 case ui::DomCode::ESCAPE: | |
| 796 remapped_key = | |
| 797 GetRemappedKey(prefs::kLanguageRemapEscapeKeyTo, *pref_service); | |
| 798 break; | |
| 799 case ui::DomCode::BACKSPACE: | |
| 800 remapped_key = | |
| 801 GetRemappedKey(prefs::kLanguageRemapBackspaceKeyTo, *pref_service); | |
| 802 break; | |
| 803 default: | |
| 804 break; | |
| 805 } | |
| 806 | |
| 807 if (remapped_key) { | |
| 808 state->key_code = remapped_key->result.key_code; | |
| 809 state->code = remapped_key->result.code; | |
| 810 state->key = remapped_key->result.key; | |
| 811 incoming.flags |= characteristic_flag; | |
| 812 characteristic_flag = remapped_key->flag; | |
| 813 if (remapped_key->remap_to == input_method::kCapsLockKey) | |
| 814 characteristic_flag |= ui::EF_CAPS_LOCK_ON; | |
| 815 state->code = RelocateModifier( | |
| 816 state->code, ui::KeycodeConverter::DomCodeToLocation(incoming.code)); | |
| 817 } | |
| 818 | |
| 819 // Next, remap modifier bits. | |
| 820 state->flags |= | |
| 821 GetRemappedModifierMasks(*pref_service, key_event, incoming.flags); | |
| 822 | |
| 823 // If the DomKey is not a modifier before remapping but is after, set the | |
| 824 // modifier latches for the later non-modifier key's modifier states. | |
| 825 bool non_modifier_to_modifier = | |
| 826 !ui::KeycodeConverter::IsDomKeyForModifier(incoming.key) && | |
| 827 ui::KeycodeConverter::IsDomKeyForModifier(state->key); | |
| 828 if (key_event.type() == ui::ET_KEY_PRESSED) { | |
| 829 state->flags |= characteristic_flag; | |
| 830 if (non_modifier_to_modifier) | |
| 831 pressed_modifier_latches_ |= characteristic_flag; | |
| 832 } else { | |
| 833 state->flags &= ~characteristic_flag; | |
| 834 if (non_modifier_to_modifier) | |
| 835 pressed_modifier_latches_ &= ~characteristic_flag; | |
| 836 } | |
| 837 | |
| 838 if (key_event.type() == ui::ET_KEY_PRESSED) { | |
| 839 if (!ui::KeycodeConverter::IsDomKeyForModifier(state->key)) { | |
| 840 used_modifier_latches_ |= pressed_modifier_latches_; | |
| 841 latched_modifier_latches_ = ui::EF_NONE; | |
| 842 } | |
| 843 // Toggle Caps Lock if the remapped key is ui::VKEY_CAPITAL. | |
| 844 if (state->key_code == ui::VKEY_CAPITAL | |
| 845 // ... except on linux Chrome OS, where InputMethodChromeOS handles it. | |
| 846 && (base::SysInfo::IsRunningOnChromeOS() || ime_keyboard_for_testing_) | |
| 847 #if defined(USE_X11) | |
| 848 // ... but for X11, do nothing if the original key is ui::VKEY_CAPITAL | |
| 849 // (i.e. a Caps Lock key on an external keyboard is pressed) since X | |
| 850 // handles that itself. | |
| 851 && incoming.key_code != ui::VKEY_CAPITAL | |
| 852 #endif | |
| 853 ) { | |
| 854 chromeos::input_method::ImeKeyboard* ime_keyboard = | |
| 855 ime_keyboard_for_testing_ | |
| 856 ? ime_keyboard_for_testing_ | |
| 857 : chromeos::input_method::InputMethodManager::Get() | |
| 858 ->GetImeKeyboard(); | |
| 859 ime_keyboard->SetCapsLockEnabled(!ime_keyboard->CapsLockIsEnabled()); | |
| 860 } | |
| 861 } | |
| 862 return exact_event; | |
| 863 } | |
| 864 | |
| 865 void EventRewriter::RewriteNumPadKeys(const ui::KeyEvent& key_event, | |
| 866 MutableKeyState* state) { | |
| 867 DCHECK(key_event.type() == ui::ET_KEY_PRESSED || | |
| 868 key_event.type() == ui::ET_KEY_RELEASED); | |
| 869 static const struct NumPadRemapping { | |
| 870 ui::KeyboardCode input_key_code; | |
| 871 EventRewriter::MutableKeyState result; | |
| 872 } kNumPadRemappings[] = { | |
| 873 {ui::VKEY_DELETE, | |
| 874 {ui::EF_NONE, ui::DomCode::NONE, ui::DomKey::Constant<'.'>::Character, | |
| 875 ui::VKEY_DECIMAL}}, | |
| 876 {ui::VKEY_INSERT, | |
| 877 {ui::EF_NONE, ui::DomCode::NONE, ui::DomKey::Constant<'0'>::Character, | |
| 878 ui::VKEY_NUMPAD0}}, | |
| 879 {ui::VKEY_END, | |
| 880 {ui::EF_NONE, ui::DomCode::NONE, ui::DomKey::Constant<'1'>::Character, | |
| 881 ui::VKEY_NUMPAD1}}, | |
| 882 {ui::VKEY_DOWN, | |
| 883 {ui::EF_NONE, ui::DomCode::NONE, ui::DomKey::Constant<'2'>::Character, | |
| 884 ui::VKEY_NUMPAD2}}, | |
| 885 {ui::VKEY_NEXT, | |
| 886 {ui::EF_NONE, ui::DomCode::NONE, ui::DomKey::Constant<'3'>::Character, | |
| 887 ui::VKEY_NUMPAD3}}, | |
| 888 {ui::VKEY_LEFT, | |
| 889 {ui::EF_NONE, ui::DomCode::NONE, ui::DomKey::Constant<'4'>::Character, | |
| 890 ui::VKEY_NUMPAD4}}, | |
| 891 {ui::VKEY_CLEAR, | |
| 892 {ui::EF_NONE, ui::DomCode::NONE, ui::DomKey::Constant<'5'>::Character, | |
| 893 ui::VKEY_NUMPAD5}}, | |
| 894 {ui::VKEY_RIGHT, | |
| 895 {ui::EF_NONE, ui::DomCode::NONE, ui::DomKey::Constant<'6'>::Character, | |
| 896 ui::VKEY_NUMPAD6}}, | |
| 897 {ui::VKEY_HOME, | |
| 898 {ui::EF_NONE, ui::DomCode::NONE, ui::DomKey::Constant<'7'>::Character, | |
| 899 ui::VKEY_NUMPAD7}}, | |
| 900 {ui::VKEY_UP, | |
| 901 {ui::EF_NONE, ui::DomCode::NONE, ui::DomKey::Constant<'8'>::Character, | |
| 902 ui::VKEY_NUMPAD8}}, | |
| 903 {ui::VKEY_PRIOR, | |
| 904 {ui::EF_NONE, ui::DomCode::NONE, ui::DomKey::Constant<'9'>::Character, | |
| 905 ui::VKEY_NUMPAD9}}}; | |
| 906 for (const auto& map : kNumPadRemappings) { | |
| 907 if (state->key_code == map.input_key_code) { | |
| 908 if (ui::KeycodeConverter::DomCodeToLocation(state->code) == | |
| 909 ui::DomKeyLocation::NUMPAD) { | |
| 910 ApplyRemapping(map.result, state); | |
| 911 } | |
| 912 return; | |
| 913 } | |
| 914 } | |
| 915 } | |
| 916 | |
| 917 void EventRewriter::RewriteExtendedKeys(const ui::KeyEvent& key_event, | |
| 918 MutableKeyState* state) { | |
| 919 DCHECK(key_event.type() == ui::ET_KEY_PRESSED || | |
| 920 key_event.type() == ui::ET_KEY_RELEASED); | |
| 921 MutableKeyState incoming = *state; | |
| 922 | |
| 923 if ((incoming.flags & (ui::EF_COMMAND_DOWN | ui::EF_ALT_DOWN)) == | |
| 924 (ui::EF_COMMAND_DOWN | ui::EF_ALT_DOWN)) { | |
| 925 // Allow Search to avoid rewriting extended keys. | |
| 926 // For these, we only remove the EF_COMMAND_DOWN flag. | |
| 927 static const KeyboardRemapping::Condition kAvoidRemappings[] = { | |
| 928 {// Alt+Backspace | |
| 929 ui::EF_ALT_DOWN | ui::EF_COMMAND_DOWN, ui::VKEY_BACK}, | |
| 930 {// Control+Alt+Up | |
| 931 ui::EF_ALT_DOWN | ui::EF_CONTROL_DOWN | ui::EF_COMMAND_DOWN, | |
| 932 ui::VKEY_UP}, | |
| 933 {// Alt+Up | |
| 934 ui::EF_ALT_DOWN | ui::EF_COMMAND_DOWN, ui::VKEY_UP}, | |
| 935 {// Control+Alt+Down | |
| 936 ui::EF_ALT_DOWN | ui::EF_CONTROL_DOWN | ui::EF_COMMAND_DOWN, | |
| 937 ui::VKEY_DOWN}, | |
| 938 {// Alt+Down | |
| 939 ui::EF_ALT_DOWN | ui::EF_COMMAND_DOWN, ui::VKEY_DOWN}}; | |
| 940 for (const auto& condition : kAvoidRemappings) { | |
| 941 if (MatchKeyboardRemapping(*state, condition)) { | |
| 942 state->flags = incoming.flags & ~ui::EF_COMMAND_DOWN; | |
| 943 return; | |
| 944 } | |
| 945 } | |
| 946 } | |
| 947 | |
| 948 if (incoming.flags & ui::EF_COMMAND_DOWN) { | |
| 949 static const KeyboardRemapping kSearchRemappings[] = { | |
| 950 {// Search+BackSpace -> Delete | |
| 951 {ui::EF_COMMAND_DOWN, ui::VKEY_BACK}, | |
| 952 {ui::EF_NONE, ui::DomCode::DEL, ui::DomKey::DEL, ui::VKEY_DELETE}}, | |
| 953 {// Search+Left -> Home | |
| 954 {ui::EF_COMMAND_DOWN, ui::VKEY_LEFT}, | |
| 955 {ui::EF_NONE, ui::DomCode::HOME, ui::DomKey::HOME, ui::VKEY_HOME}}, | |
| 956 {// Search+Up -> Prior (aka PageUp) | |
| 957 {ui::EF_COMMAND_DOWN, ui::VKEY_UP}, | |
| 958 {ui::EF_NONE, ui::DomCode::PAGE_UP, ui::DomKey::PAGE_UP, | |
| 959 ui::VKEY_PRIOR}}, | |
| 960 {// Search+Right -> End | |
| 961 {ui::EF_COMMAND_DOWN, ui::VKEY_RIGHT}, | |
| 962 {ui::EF_NONE, ui::DomCode::END, ui::DomKey::END, ui::VKEY_END}}, | |
| 963 {// Search+Down -> Next (aka PageDown) | |
| 964 {ui::EF_COMMAND_DOWN, ui::VKEY_DOWN}, | |
| 965 {ui::EF_NONE, ui::DomCode::PAGE_DOWN, ui::DomKey::PAGE_DOWN, | |
| 966 ui::VKEY_NEXT}}, | |
| 967 {// Search+Period -> Insert | |
| 968 {ui::EF_COMMAND_DOWN, ui::VKEY_OEM_PERIOD}, | |
| 969 {ui::EF_NONE, ui::DomCode::INSERT, ui::DomKey::INSERT, | |
| 970 ui::VKEY_INSERT}}}; | |
| 971 if (RewriteWithKeyboardRemappings( | |
| 972 kSearchRemappings, arraysize(kSearchRemappings), incoming, state)) { | |
| 973 return; | |
| 974 } | |
| 975 } | |
| 976 | |
| 977 if (incoming.flags & ui::EF_ALT_DOWN) { | |
| 978 static const KeyboardRemapping kNonSearchRemappings[] = { | |
| 979 {// Alt+BackSpace -> Delete | |
| 980 {ui::EF_ALT_DOWN, ui::VKEY_BACK}, | |
| 981 {ui::EF_NONE, ui::DomCode::DEL, ui::DomKey::DEL, ui::VKEY_DELETE}}, | |
| 982 {// Control+Alt+Up -> Home | |
| 983 {ui::EF_ALT_DOWN | ui::EF_CONTROL_DOWN, ui::VKEY_UP}, | |
| 984 {ui::EF_NONE, ui::DomCode::HOME, ui::DomKey::HOME, ui::VKEY_HOME}}, | |
| 985 {// Alt+Up -> Prior (aka PageUp) | |
| 986 {ui::EF_ALT_DOWN, ui::VKEY_UP}, | |
| 987 {ui::EF_NONE, ui::DomCode::PAGE_UP, ui::DomKey::PAGE_UP, | |
| 988 ui::VKEY_PRIOR}}, | |
| 989 {// Control+Alt+Down -> End | |
| 990 {ui::EF_ALT_DOWN | ui::EF_CONTROL_DOWN, ui::VKEY_DOWN}, | |
| 991 {ui::EF_NONE, ui::DomCode::END, ui::DomKey::END, ui::VKEY_END}}, | |
| 992 {// Alt+Down -> Next (aka PageDown) | |
| 993 {ui::EF_ALT_DOWN, ui::VKEY_DOWN}, | |
| 994 {ui::EF_NONE, ui::DomCode::PAGE_DOWN, ui::DomKey::PAGE_DOWN, | |
| 995 ui::VKEY_NEXT}}}; | |
| 996 if (RewriteWithKeyboardRemappings(kNonSearchRemappings, | |
| 997 arraysize(kNonSearchRemappings), incoming, | |
| 998 state)) { | |
| 999 return; | |
| 1000 } | |
| 1001 } | |
| 1002 } | |
| 1003 | |
| 1004 void EventRewriter::RewriteFunctionKeys(const ui::KeyEvent& key_event, | |
| 1005 MutableKeyState* state) { | |
| 1006 CHECK(key_event.type() == ui::ET_KEY_PRESSED || | |
| 1007 key_event.type() == ui::ET_KEY_RELEASED); | |
| 1008 | |
| 1009 if ((state->key_code >= ui::VKEY_F1) && (state->key_code <= ui::VKEY_F12)) { | |
| 1010 // By default the top row (F1-F12) keys are system keys for back, forward, | |
| 1011 // brightness, volume, etc. However, windows for v2 apps can optionally | |
| 1012 // request raw function keys for these keys. | |
| 1013 bool top_row_keys_are_function_keys = TopRowKeysAreFunctionKeys(key_event); | |
| 1014 bool search_is_pressed = (state->flags & ui::EF_COMMAND_DOWN) != 0; | |
| 1015 | |
| 1016 // Search? Top Row Result | |
| 1017 // ------- -------- ------ | |
| 1018 // No Fn Unchanged | |
| 1019 // No System Fn -> System | |
| 1020 // Yes Fn Fn -> System | |
| 1021 // Yes System Search+Fn -> Fn | |
| 1022 if (top_row_keys_are_function_keys == search_is_pressed) { | |
| 1023 // Rewrite the F1-F12 keys on a Chromebook keyboard to system keys. | |
| 1024 static const KeyboardRemapping kFkeysToSystemKeys[] = { | |
| 1025 {{ui::EF_NONE, ui::VKEY_F1}, | |
| 1026 {ui::EF_NONE, ui::DomCode::BROWSER_BACK, ui::DomKey::BROWSER_BACK, | |
| 1027 ui::VKEY_BROWSER_BACK}}, | |
| 1028 {{ui::EF_NONE, ui::VKEY_F2}, | |
| 1029 {ui::EF_NONE, ui::DomCode::BROWSER_FORWARD, | |
| 1030 ui::DomKey::BROWSER_FORWARD, ui::VKEY_BROWSER_FORWARD}}, | |
| 1031 {{ui::EF_NONE, ui::VKEY_F3}, | |
| 1032 {ui::EF_NONE, ui::DomCode::BROWSER_REFRESH, | |
| 1033 ui::DomKey::BROWSER_REFRESH, ui::VKEY_BROWSER_REFRESH}}, | |
| 1034 {{ui::EF_NONE, ui::VKEY_F4}, | |
| 1035 {ui::EF_NONE, ui::DomCode::ZOOM_TOGGLE, ui::DomKey::ZOOM_TOGGLE, | |
| 1036 ui::VKEY_MEDIA_LAUNCH_APP2}}, | |
| 1037 {{ui::EF_NONE, ui::VKEY_F5}, | |
| 1038 {ui::EF_NONE, ui::DomCode::SELECT_TASK, | |
| 1039 ui::DomKey::LAUNCH_MY_COMPUTER, ui::VKEY_MEDIA_LAUNCH_APP1}}, | |
| 1040 {{ui::EF_NONE, ui::VKEY_F6}, | |
| 1041 {ui::EF_NONE, ui::DomCode::BRIGHTNESS_DOWN, | |
| 1042 ui::DomKey::BRIGHTNESS_DOWN, ui::VKEY_BRIGHTNESS_DOWN}}, | |
| 1043 {{ui::EF_NONE, ui::VKEY_F7}, | |
| 1044 {ui::EF_NONE, ui::DomCode::BRIGHTNESS_UP, ui::DomKey::BRIGHTNESS_UP, | |
| 1045 ui::VKEY_BRIGHTNESS_UP}}, | |
| 1046 {{ui::EF_NONE, ui::VKEY_F8}, | |
| 1047 {ui::EF_NONE, ui::DomCode::VOLUME_MUTE, | |
| 1048 ui::DomKey::AUDIO_VOLUME_MUTE, ui::VKEY_VOLUME_MUTE}}, | |
| 1049 {{ui::EF_NONE, ui::VKEY_F9}, | |
| 1050 {ui::EF_NONE, ui::DomCode::VOLUME_DOWN, | |
| 1051 ui::DomKey::AUDIO_VOLUME_DOWN, ui::VKEY_VOLUME_DOWN}}, | |
| 1052 {{ui::EF_NONE, ui::VKEY_F10}, | |
| 1053 {ui::EF_NONE, ui::DomCode::VOLUME_UP, ui::DomKey::AUDIO_VOLUME_UP, | |
| 1054 ui::VKEY_VOLUME_UP}}, | |
| 1055 }; | |
| 1056 MutableKeyState incoming_without_command = *state; | |
| 1057 incoming_without_command.flags &= ~ui::EF_COMMAND_DOWN; | |
| 1058 if (RewriteWithKeyboardRemappings(kFkeysToSystemKeys, | |
| 1059 arraysize(kFkeysToSystemKeys), | |
| 1060 incoming_without_command, state)) { | |
| 1061 return; | |
| 1062 } | |
| 1063 } else if (search_is_pressed) { | |
| 1064 // Allow Search to avoid rewriting F1-F12. | |
| 1065 state->flags &= ~ui::EF_COMMAND_DOWN; | |
| 1066 return; | |
| 1067 } | |
| 1068 } | |
| 1069 | |
| 1070 if (state->flags & ui::EF_COMMAND_DOWN) { | |
| 1071 // Remap Search+<number> to F<number>. | |
| 1072 // We check the DOM3 |code| here instead of the VKEY, as these keys may | |
| 1073 // have different |KeyboardCode|s when modifiers are pressed, such as shift. | |
| 1074 static const struct { | |
| 1075 ui::DomCode input_dom_code; | |
| 1076 EventRewriter::MutableKeyState result; | |
| 1077 } kNumberKeysToFkeys[] = { | |
| 1078 {ui::DomCode::DIGIT1, | |
| 1079 {ui::EF_NONE, ui::DomCode::F1, ui::DomKey::F1, ui::VKEY_F1}}, | |
| 1080 {ui::DomCode::DIGIT2, | |
| 1081 {ui::EF_NONE, ui::DomCode::F2, ui::DomKey::F2, ui::VKEY_F2}}, | |
| 1082 {ui::DomCode::DIGIT3, | |
| 1083 {ui::EF_NONE, ui::DomCode::F3, ui::DomKey::F3, ui::VKEY_F3}}, | |
| 1084 {ui::DomCode::DIGIT4, | |
| 1085 {ui::EF_NONE, ui::DomCode::F4, ui::DomKey::F4, ui::VKEY_F4}}, | |
| 1086 {ui::DomCode::DIGIT5, | |
| 1087 {ui::EF_NONE, ui::DomCode::F5, ui::DomKey::F5, ui::VKEY_F5}}, | |
| 1088 {ui::DomCode::DIGIT6, | |
| 1089 {ui::EF_NONE, ui::DomCode::F6, ui::DomKey::F6, ui::VKEY_F6}}, | |
| 1090 {ui::DomCode::DIGIT7, | |
| 1091 {ui::EF_NONE, ui::DomCode::F7, ui::DomKey::F7, ui::VKEY_F7}}, | |
| 1092 {ui::DomCode::DIGIT8, | |
| 1093 {ui::EF_NONE, ui::DomCode::F8, ui::DomKey::F8, ui::VKEY_F8}}, | |
| 1094 {ui::DomCode::DIGIT9, | |
| 1095 {ui::EF_NONE, ui::DomCode::F9, ui::DomKey::F9, ui::VKEY_F9}}, | |
| 1096 {ui::DomCode::DIGIT0, | |
| 1097 {ui::EF_NONE, ui::DomCode::F10, ui::DomKey::F10, ui::VKEY_F10}}, | |
| 1098 {ui::DomCode::MINUS, | |
| 1099 {ui::EF_NONE, ui::DomCode::F11, ui::DomKey::F11, ui::VKEY_F11}}, | |
| 1100 {ui::DomCode::EQUAL, | |
| 1101 {ui::EF_NONE, ui::DomCode::F12, ui::DomKey::F12, ui::VKEY_F12}}}; | |
| 1102 for (const auto& map : kNumberKeysToFkeys) { | |
| 1103 if (state->code == map.input_dom_code) { | |
| 1104 state->flags &= ~ui::EF_COMMAND_DOWN; | |
| 1105 ApplyRemapping(map.result, state); | |
| 1106 return; | |
| 1107 } | |
| 1108 } | |
| 1109 } | |
| 1110 } | |
| 1111 | |
| 1112 void EventRewriter::RewriteLocatedEvent(const ui::Event& event, int* flags) { | |
| 1113 const PrefService* pref_service = GetPrefService(); | |
| 1114 if (!pref_service) | |
| 1115 return; | |
| 1116 *flags = GetRemappedModifierMasks(*pref_service, event, *flags); | |
| 1117 } | |
| 1118 | |
| 1119 int EventRewriter::RewriteModifierClick(const ui::MouseEvent& mouse_event, | |
| 1120 int* flags) { | |
| 1121 // Remap Alt+Button1 to Button3. | |
| 1122 const int kAltLeftButton = (ui::EF_ALT_DOWN | ui::EF_LEFT_MOUSE_BUTTON); | |
| 1123 if (((*flags & kAltLeftButton) == kAltLeftButton) && | |
| 1124 ((mouse_event.type() == ui::ET_MOUSE_PRESSED) || | |
| 1125 pressed_device_ids_.count(mouse_event.source_device_id()))) { | |
| 1126 *flags &= ~kAltLeftButton; | |
| 1127 *flags |= ui::EF_RIGHT_MOUSE_BUTTON; | |
| 1128 if (mouse_event.type() == ui::ET_MOUSE_PRESSED) | |
| 1129 pressed_device_ids_.insert(mouse_event.source_device_id()); | |
| 1130 else | |
| 1131 pressed_device_ids_.erase(mouse_event.source_device_id()); | |
| 1132 return ui::EF_RIGHT_MOUSE_BUTTON; | |
| 1133 } | |
| 1134 return ui::EF_NONE; | |
| 1135 } | |
| 1136 | |
| 1137 EventRewriter::DeviceType EventRewriter::KeyboardDeviceAddedInternal( | |
| 1138 int device_id, | |
| 1139 const std::string& device_name, | |
| 1140 int vendor_id, | |
| 1141 int product_id) { | |
| 1142 const DeviceType type = GetDeviceType(device_name, vendor_id, product_id); | |
| 1143 if (type == kDeviceAppleKeyboard) { | |
| 1144 VLOG(1) << "Apple keyboard '" << device_name << "' connected: " | |
| 1145 << "id=" << device_id; | |
| 1146 } else if (type == kDeviceHotrodRemote) { | |
| 1147 VLOG(1) << "Hotrod remote '" << device_name << "' connected: " | |
| 1148 << "id=" << device_id; | |
| 1149 } else if (type == kDeviceVirtualCoreKeyboard) { | |
| 1150 VLOG(1) << "Xorg virtual '" << device_name << "' connected: " | |
| 1151 << "id=" << device_id; | |
| 1152 } else { | |
| 1153 VLOG(1) << "Unknown keyboard '" << device_name << "' connected: " | |
| 1154 << "id=" << device_id; | |
| 1155 } | |
| 1156 // Always overwrite the existing device_id since the X server may reuse a | |
| 1157 // device id for an unattached device. | |
| 1158 device_id_to_type_[device_id] = type; | |
| 1159 return type; | |
| 1160 } | |
| 1161 | |
| 1162 EventRewriter::DeviceType EventRewriter::KeyboardDeviceAdded(int device_id) { | |
| 1163 if (!ui::InputDeviceManager::HasInstance()) | |
| 1164 return kDeviceUnknown; | |
| 1165 const std::vector<ui::InputDevice>& keyboard_devices = | |
| 1166 ui::InputDeviceManager::GetInstance()->GetKeyboardDevices(); | |
| 1167 for (const auto& keyboard : keyboard_devices) { | |
| 1168 if (keyboard.id == device_id) { | |
| 1169 return KeyboardDeviceAddedInternal( | |
| 1170 keyboard.id, keyboard.name, keyboard.vendor_id, keyboard.product_id); | |
| 1171 } | |
| 1172 } | |
| 1173 return kDeviceUnknown; | |
| 1174 } | |
| 1175 | |
| 1176 } // namespace chromeos | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2724913002:
Move chromeos::EventRewriter to //ui/chromeos/events (Closed)
