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标题: Android14 WMS-Power键短按流程 [打印本页]

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作者: 南飓风    时间: 2024-6-22 06:03
标题: Android14 WMS-Power键短按流程
目录
1. PhoneWindowManager#interceptKeyBeforeQueueing 
2. PhoneWindowManager#handleKeyGesture
3. PhoneWindowManager#handleCameraGesture
4. SingleKeyGestureDetector#interceptKey
5. SingleKeyGestureDetector#interceptKeyUp
6. SingleKeyGestureDetector#KeyHandler#handleMessage
7. PhoneWindowManager#PowerKeyRule#onPress 
 8. PhoneWindowManager#powerPress

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WMS中事件分发从
interceptKeyBeforeDispatching->interceptKeyBeforeQueueing
1. PhoneWindowManager#interceptKeyBeforeQueueing 

http://10.12.16.211:8080/source/xref/LA.QSSI.14.0.r1/LINUX/android/frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java#interceptKeyBeforeQueueing
  

1.     @Override
2.     <strong>public</strong> <strong>int</strong> interceptKeyBeforeQueueing(KeyEvent event, <strong>int</strong> policyFlags) {               
3. ...
4.         <strong>final</strong> <strong>boolean</strong> isDefaultDisplayOn = mDefaultDisplayPolicy.isAwake();
5.         <strong>final</strong> <strong>boolean</strong> displayOn = Display.isOnState(mDefaultDisplay.getState());
6.         <strong>final</strong> <strong>boolean</strong> interactiveAndOn = interactive && isDefaultDisplayOn && displayOn;
7.         <strong>if</strong> ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) {
8.             handleKeyGesture(event, interactiveAndOn);
9.         }

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2. PhoneWindowManager#handleKeyGesture

  

1.     <strong>private</strong> <strong>void</strong> handleKeyGesture(KeyEvent event, <strong>boolean</strong> interactive) {
2.         <strong>if</strong> (mKeyCombinationManager.interceptKey(event, interactive)) {
3.             // handled by combo keys manager.
4.             mSingleKeyGestureDetector.reset();
5.             <strong>return</strong>;
6.         }
8.         <strong>if</strong> (event.getKeyCode() == KEYCODE_POWER && event.getAction() == KeyEvent.ACTION_DOWN) {
9. 如果连续按power键会拉起camera，如果这个power事件被消费了，会直接return，不往下继续走短按power流程了
10.             mPowerKeyHandled = handleCameraGesture(event, interactive);
11.             <strong>if</strong> (mPowerKeyHandled) {
12.                 // handled by camera gesture.
13.                 mSingleKeyGestureDetector.reset();
14.                 <strong>return</strong>;
15.             }
16.         }
18.         mSingleKeyGestureDetector.interceptKey(event, interactive);
19.     }

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3. PhoneWindowManager#handleCameraGesture

  

1.     // The camera gesture will be detected by GestureLauncherService.
2.     <strong>private</strong> <strong>boolean</strong> handleCameraGesture(KeyEvent event, <strong>boolean</strong> interactive) {
3.         // add by monet, do not handle camera gesture.
4. 如果是VR设备，这里会直接return false。
5.         <strong>if</strong> (SystemProperties.getBoolean("persist.xr.vrmode", <strong>true</strong>)) {
6.             <strong>return</strong> <strong>false</strong>;
7.         }...

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4. SingleKeyGestureDetector#interceptKey

http://10.12.16.211:8080/source/xref/LA.QSSI.14.0.r1/LINUX/android/frameworks/base/services/core/java/com/android/server/policy/SingleKeyGestureDetector.java
  

1.     <strong>void</strong> interceptKey(KeyEvent event, <strong>boolean</strong> interactive) {
2.         <strong>if</strong> (event.getAction() == KeyEvent.ACTION_DOWN) {
3.             // Store the non interactive state when first down.
4.             <strong>if</strong> (mDownKeyCode == KeyEvent.KEYCODE_UNKNOWN || mDownKeyCode != event.getKeyCode()) {
5.                 mBeganFromNonInteractive = !interactive;
6.             }
7.             interceptKeyDown(event);
8.         } <strong>else</strong> {
9.             interceptKeyUp(event);
10.         }
11.     }

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5. SingleKeyGestureDetector#interceptKeyUp

  

1.     <strong>private</strong> <strong>boolean</strong> interceptKeyUp(KeyEvent event) {

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...

1.         <strong>if</strong> (event.getKeyCode() == mActiveRule.mKeyCode) {
2.             // Directly trigger short press when max count is 1.
3.             <strong>if</strong> (mActiveRule.getMaxMultiPressCount() == 1) {
4.                 <strong>if</strong> (DEBUG) {
5.                     Log.i(TAG, "press key " + KeyEvent.keyCodeToString(event.getKeyCode()));
6.                 }短按
7.                 Message msg = mHandler.obtainMessage(MSG_KEY_DELAYED_PRESS, mActiveRule.mKeyCode, 1, mActiveRule);
8.                 msg.setAsynchronous(<strong>true</strong>);
9.                 mHandler.sendMessage(msg);
10.                 mActiveRule = null;
11.                 <strong>return</strong> <strong>true</strong>;
12.             }

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6. SingleKeyGestureDetector#KeyHandler#handleMessage

http://10.12.16.211:8080/source/xref/LA.QSSI.14.0.r1/LINUX/android/frameworks/base/services/core/java/com/android/server/policy/SingleKeyGestureDetector.java#425
  

1.     <strong>private</strong> <strong>class</strong> KeyHandler <strong>extends</strong> Handler {
2.         KeyHandler() {
3.             <strong>super</strong>(Looper.myLooper());
4.         }
5.         @Override
6.         <strong>public</strong> <strong>void</strong> handleMessage(Message msg) {
7.             <strong>final</strong> SingleKeyRule rule = (SingleKeyRule) msg.obj;
8.             <strong>if</strong> (rule == null) {
9.                 Log.wtf(TAG, "No active rule.");
10.                 <strong>return</strong>;
11.             }
13.             <strong>final</strong> <strong>int</strong> keyCode = msg.arg1;
14.             <strong>final</strong> <strong>int</strong> pressCount = msg.arg2;
15.             <strong>switch</strong>(msg.what) {
16.                 <strong>case</strong> MSG_KEY_LONG_PRESS:
17.                     <strong>if</strong> (DEBUG) {
18.                         Log.i(TAG, "Detect long press " + KeyEvent.keyCodeToString(keyCode));
19.                     }
20.                     rule.onLongPress(mLastDownTime);
21.                     <strong>break</strong>;
22.                 <strong>case</strong> MSG_KEY_VERY_LONG_PRESS:
23.                     <strong>if</strong> (DEBUG) {
24.                         Log.i(TAG, "Detect very long press " + KeyEvent.keyCodeToString(keyCode));
25.                     }
26.                     rule.onVeryLongPress(mLastDownTime);
27.                     <strong>break</strong>;
28.                 <strong>case</strong> MSG_KEY_DELAYED_PRESS:
29.                     <strong>if</strong> (DEBUG) {
30.                         Log.i(TAG, "Detect press " + KeyEvent.keyCodeToString(keyCode) + ", count " + pressCount);
31.                     }
32.                     <strong>if</strong> (pressCount == 1) {
33. 短按一次走这里
34.                         rule.onPress(mLastDownTime);
35.                     } <strong>else</strong> {
36.                         rule.onMultiPress(mLastDownTime, pressCount);
37.                     }
38.                     <strong>break</strong>;
39.             }

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7. PhoneWindowManager#PowerKeyRule#onPress 

http://10.12.16.211:8080/source/xref/LA.QSSI.14.0.r1/LINUX/android/frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java#2481
  

1.     /**
2.      * Rule for single power key gesture.
3.      */
4.     <strong>private</strong> <strong>final</strong> <strong>class</strong> PowerKeyRule <strong>extends</strong> SingleKeyGestureDetector.SingleKeyRule {
5.         PowerKeyRule() {
6.             <strong>super</strong>(KEYCODE_POWER);
7.         }
8.       @Override 短按一次
9.         <strong>void</strong> onPress(<strong>long</strong> downTime) {
10.             powerPress(downTime, 1 /*count*/,
11.                     mSingleKeyGestureDetector.beganFromNonInteractive());
12.         }

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1.         @Override 长按
2.         <strong>void</strong> onLongPress(<strong>long</strong> eventTime) {
3.             <strong>if</strong> (mSingleKeyGestureDetector.beganFromNonInteractive()
4.                     && !mSupportLongPressPowerWhenNonInteractive) {
5.                 Slog.v(TAG, "Not support long press power when device is not interactive.");
6.                 <strong>return</strong>;
7.             }
9.             powerLongPress(eventTime);
10.         }
12.         @Override
13.         <strong>void</strong> onVeryLongPress(<strong>long</strong> eventTime) {
14.             mActivityManagerInternal.prepareForPossibleShutdown();
15.             powerVeryLongPress();
16.         }
18.         @Override  多次按
19.         <strong>void</strong> onMultiPress(<strong>long</strong> downTime, <strong>int</strong> count) {
20.             powerPress(downTime, count, mSingleKeyGestureDetector.beganFromNonInteractive());
21.         }

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 8. PhoneWindowManager#powerPress

  

1.     <strong>private</strong> <strong>void</strong> powerPress(<strong>long</strong> eventTime, <strong>int</strong> count, <strong>boolean</strong> beganFromNonInteractive) { count为按power键的次数
2.         // SideFPS still needs to know about suppressed power buttons, in case it needs to block an auth attempt.
3.         <strong>if</strong> (count == 1) {
4.             mSideFpsEventHandler.notifyPowerPressed();
5.         }
6.         <strong>if</strong> (mDefaultDisplayPolicy.isScreenOnEarly() && !mDefaultDisplayPolicy.isScreenOnFully()) {
7.             Slog.i(TAG, "Suppressed redundant power key press while "
8.                     + "already in the process of turning the screen on.");
9.             <strong>return</strong>;
10.         }
12.         <strong>final</strong> <strong>boolean</strong> interactive = mDefaultDisplayPolicy.isAwake();
14.         Slog.d(TAG, "powerPress: eventTime=" + eventTime + " interactive=" + interactive + " count=" + count + " beganFromNonInteractive=" + beganFromNonInteractive + " mShortPressOnPowerBehavior=" + mShortPressOnPowerBehavior);
16.         <strong>if</strong> (count == 2) {
17.             powerMultiPressAction(eventTime, interactive, mDoublePressOnPowerBehavior);
18.         } <strong>else</strong> <strong>if</strong> (count == 3) {
19.             powerMultiPressAction(eventTime, interactive, mTriplePressOnPowerBehavior);
20.         } <strong>else</strong> <strong>if</strong> (count > 3 && count <= getMaxMultiPressPowerCount()) {
21.             Slog.d(TAG, "No behavior defined for power press count " + count);
22.         } <strong>else</strong> <strong>if</strong> (count == 1 && interactive && !beganFromNonInteractive) {
23.             <strong>if</strong> (mSideFpsEventHandler.shouldConsumeSinglePress(eventTime)) {
24.                 Slog.i(TAG, "Suppressing power key because the user is interacting with the " + "fingerprint sensor");
25.                 <strong>return</strong>;
26.             }
28.             // Device Integration: If the power button is handled by black screen, then do nothing
29.             <strong>if</strong> (!DeviceIntegrationUtils.DISABLE_DEVICE_INTEGRATION
30.                 && BlackScreenWindowManager.getInstance().interceptPowerKey()) {
31.                 <strong>return</strong>;
32.             }
34.             <strong>switch</strong> (mShortPressOnPowerBehavior) {
35.                 <strong>case</strong> SHORT_PRESS_POWER_NOTHING:
36.                     <strong>break</strong>;
37.                 <strong>case</strong> SHORT_PRESS_POWER_GO_TO_SLEEP:
38.                     sleepDefaultDisplayFromPowerButton(eventTime, 0);
39.                     <strong>break</strong>;
40.                 <strong>case</strong> SHORT_PRESS_POWER_REALLY_GO_TO_SLEEP:
41.                     sleepDefaultDisplayFromPowerButton(eventTime,
42.                             PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE);
43.                     <strong>break</strong>;
44.                 <strong>case</strong> SHORT_PRESS_POWER_REALLY_GO_TO_SLEEP_AND_GO_HOME:
45.                     <strong>if</strong> (sleepDefaultDisplayFromPowerButton(eventTime,
46.                             PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE)) {
47.                         launchHomeFromHotKey(DEFAULT_DISPLAY);
48.                     }
49.                     <strong>break</strong>;
50.                 <strong>case</strong> SHORT_PRESS_POWER_GO_HOME:
51.                     shortPressPowerGoHome();
52.                     <strong>break</strong>;
53.                 <strong>case</strong> SHORT_PRESS_POWER_CLOSE_IME_OR_GO_HOME: {
54.                     <strong>if</strong> (mDismissImeOnBackKeyPressed) {
55.                         InputMethodManagerInternal.get().hideCurrentInputMethod(
56.                                     SoftInputShowHideReason.HIDE_POWER_BUTTON_GO_HOME);
57.                     } <strong>else</strong> {
58.                         shortPressPowerGoHome();
59.                     }
60.                     <strong>break</strong>;
61.                 }
62.                 <strong>case</strong> SHORT_PRESS_POWER_LOCK_OR_SLEEP: {
63.                     <strong>if</strong> (mKeyguardDelegate == null || !mKeyguardDelegate.hasKeyguard() || !mKeyguardDelegate.isSecure(mCurrentUserId) || keyguardOn()) {
64.                         sleepDefaultDisplayFromPowerButton(eventTime, 0);
65.                     } <strong>else</strong> {
66.                         lockNow(null /*options*/);
67.                     }
68.                     <strong>break</strong>;
69.                 }
70.                 <strong>case</strong> SHORT_PRESS_POWER_DREAM_OR_SLEEP: {
71.                     attemptToDreamFromShortPowerButtonPress(
72.                             <strong>true</strong>,
73.                             () -> sleepDefaultDisplayFromPowerButton(eventTime, 0));
74.                     <strong>break</strong>;
75.                 }
76.             }
77.         }
78.     }

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