Remove Back shortcut processing in InputDispatcher (ee42fdb4) · Commits · e / os / platform_frameworks_native

services/inputflinger/dispatcher/InputDispatcher.cpp

+0 −54

Original line number	Diff line number	Diff line
		@@ -4186,45 +4186,6 @@ void InputDispatcher::notifyConfigurationChanged(const NotifyConfigurationChange
		}
		}

		/**
		* If one of the meta shortcuts is detected, process them here:
		* Meta + Backspace; Meta + Grave; Meta + Left arrow -> generate BACK
		* Most System shortcuts are handled in PhoneWindowManager.java except 'Back' shortcuts. Unlike
		* Back, other shortcuts DO NOT need to be sent to applications and are fully handled by the system.
		* But for Back key and Back shortcuts, we need to send KEYCODE_BACK to applications which can
		* potentially handle the back key presses.
		* Note: We don't send any Meta based KeyEvents to applications, so we need to convert to a KeyEvent
		* where meta modifier is off before sending. Currently only use case is 'Back'.
		*/
		void InputDispatcher::accelerateMetaShortcuts(const int32_t deviceId, const int32_t action,
		int32_t& keyCode, int32_t& metaState) {
		if (metaState & AMETA_META_ON && action == AKEY_EVENT_ACTION_DOWN) {
		int32_t newKeyCode = AKEYCODE_UNKNOWN;
		if (keyCode == AKEYCODE_DEL \|\| keyCode == AKEYCODE_GRAVE \|\| keyCode == AKEYCODE_DPAD_LEFT) {
		newKeyCode = AKEYCODE_BACK;
		}
		if (newKeyCode != AKEYCODE_UNKNOWN) {
		std::scoped_lock _l(mLock);
		struct KeyReplacement replacement = {keyCode, deviceId};
		mReplacedKeys[replacement] = newKeyCode;
		keyCode = newKeyCode;
		metaState &= ~(AMETA_META_ON \| AMETA_META_LEFT_ON \| AMETA_META_RIGHT_ON);
		}
		} else if (action == AKEY_EVENT_ACTION_UP) {
		// In order to maintain a consistent stream of up and down events, check to see if the key
		// going up is one we've replaced in a down event and haven't yet replaced in an up event,
		// even if the modifier was released between the down and the up events.
		std::scoped_lock _l(mLock);
		struct KeyReplacement replacement = {keyCode, deviceId};
		auto replacementIt = mReplacedKeys.find(replacement);
		if (replacementIt != mReplacedKeys.end()) {
		keyCode = replacementIt->second;
		mReplacedKeys.erase(replacementIt);
		metaState &= ~(AMETA_META_ON \| AMETA_META_LEFT_ON \| AMETA_META_RIGHT_ON);
		}
		}
		}

		void InputDispatcher::notifyKey(const NotifyKeyArgs& args) {
		ALOGD_IF(debugInboundEventDetails(),
		"notifyKey - id=%" PRIx32 ", eventTime=%" PRId64
		@@ -4257,8 +4218,6 @@ void InputDispatcher::notifyKey(const NotifyKeyArgs& args) {
		policyFlags \|= POLICY_FLAG_TRUSTED;

		int32_t keyCode = args.keyCode;
		accelerateMetaShortcuts(args.deviceId, args.action, keyCode, metaState);

		KeyEvent event;
		event.initialize(args.id, args.deviceId, args.source, args.displayId, INVALID_HMAC, args.action,
		flags, keyCode, args.scanCode, metaState, repeatCount, args.downTime,
		@@ -4569,8 +4528,6 @@ InputEventInjectionResult InputDispatcher::injectInputEvent(const InputEvent* ev
		}
		int32_t keyCode = incomingKey.getKeyCode();
		int32_t metaState = incomingKey.getMetaState();
		accelerateMetaShortcuts(resolvedDeviceId, action,
		/byref/ keyCode, /byref/ metaState);
		KeyEvent keyEvent;
		keyEvent.initialize(incomingKey.getId(), resolvedDeviceId, incomingKey.getSource(),
		incomingKey.getDisplayId(), INVALID_HMAC, action, flags, keyCode,
		@@ -5558,7 +5515,6 @@ void InputDispatcher::resetAndDropEverythingLocked(const char* reason) {

		mAnrTracker.clear();
		mTouchStatesByDisplay.clear();
		mReplacedKeys.clear();
		}

		void InputDispatcher::logDispatchStateLocked() const {
		@@ -5727,16 +5683,6 @@ void InputDispatcher::dumpDispatchStateLocked(std::string& dump) const {
		dump += INDENT "InboundQueue: <empty>\n";
		}

		if (!mReplacedKeys.empty()) {
		dump += INDENT "ReplacedKeys:\n";
		for (const auto& [replacement, newKeyCode] : mReplacedKeys) {
		dump += StringPrintf(INDENT2 "originalKeyCode=%d, deviceId=%d -> newKeyCode=%d\n",
		replacement.keyCode, replacement.deviceId, newKeyCode);
		}
		} else {
		dump += INDENT "ReplacedKeys: <empty>\n";
		}

		if (!mCommandQueue.empty()) {
		dump += StringPrintf(INDENT "CommandQueue: size=%zu\n", mCommandQueue.size());
		} else {

services/inputflinger/dispatcher/InputDispatcher.h

+0 −19

Original line number	Diff line number	Diff line
		@@ -302,25 +302,6 @@ private:
		void resetKeyRepeatLocked() REQUIRES(mLock);
		std::shared_ptr<KeyEntry> synthesizeKeyRepeatLocked(nsecs_t currentTime) REQUIRES(mLock);

		// Key replacement tracking
		struct KeyReplacement {
		int32_t keyCode;
		int32_t deviceId;
		bool operator==(const KeyReplacement& rhs) const {
		return keyCode == rhs.keyCode && deviceId == rhs.deviceId;
		}
		};
		struct KeyReplacementHash {
		size_t operator()(const KeyReplacement& key) const {
		return std::hash<int32_t>()(key.keyCode) ^ (std::hash<int32_t>()(key.deviceId) << 1);
		}
		};
		// Maps the key code replaced, device id tuple to the key code it was replaced with
		std::unordered_map<KeyReplacement, int32_t, KeyReplacementHash> mReplacedKeys GUARDED_BY(mLock);
		// Process certain Meta + Key combinations
		void accelerateMetaShortcuts(const int32_t deviceId, const int32_t action, int32_t& keyCode,
		int32_t& metaState);

		// Deferred command processing.
		bool haveCommandsLocked() const REQUIRES(mLock);
		bool runCommandsLockedInterruptable() REQUIRES(mLock);