Show charging speed on Keyguard

Bug: 8099739
Change-Id: I2e5c21dd7ec028ce47fb03ab71e74f7fccaa9e36

7 files changed, 85 insertions, 8 deletions

diff --git a/core/java/android/os/BatteryManager.java b/core/java/android/os/BatteryManager.java
index cccc4be..1f3e9a7 100644
--- a/core/java/android/os/BatteryManager.java
+++ b/core/java/android/os/BatteryManager.java
@@ -101,6 +101,13 @@ public class BatteryManager {
      */
     public static final String EXTRA_INVALID_CHARGER = "invalid_charger";
 
+    /**
+     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:
+     * Int value set to the maximum charging current supported by the charger in micro amperes.
+     * {@hide}
+     */
+    public static final String EXTRA_MAX_CHARGING_CURRENT = "max_charging_current";
+
     // values for "status" field in the ACTION_BATTERY_CHANGED Intent
     public static final int BATTERY_STATUS_UNKNOWN = 1;
     public static final int BATTERY_STATUS_CHARGING = 2;
diff --git a/core/java/android/os/BatteryProperties.java b/core/java/android/os/BatteryProperties.java
index 8f5cf8b..29e868c 100644
--- a/core/java/android/os/BatteryProperties.java
+++ b/core/java/android/os/BatteryProperties.java
@@ -22,6 +22,7 @@ public class BatteryProperties implements Parcelable {
     public boolean chargerAcOnline;
     public boolean chargerUsbOnline;
     public boolean chargerWirelessOnline;
+    public int maxChargingCurrent;
     public int batteryStatus;
     public int batteryHealth;
     public boolean batteryPresent;
@@ -37,6 +38,7 @@ public class BatteryProperties implements Parcelable {
         chargerAcOnline = other.chargerAcOnline;
         chargerUsbOnline = other.chargerUsbOnline;
         chargerWirelessOnline = other.chargerWirelessOnline;
+        maxChargingCurrent = other.maxChargingCurrent;
         batteryStatus = other.batteryStatus;
         batteryHealth = other.batteryHealth;
         batteryPresent = other.batteryPresent;
@@ -55,6 +57,7 @@ public class BatteryProperties implements Parcelable {
         chargerAcOnline = p.readInt() == 1 ? true : false;
         chargerUsbOnline = p.readInt() == 1 ? true : false;
         chargerWirelessOnline = p.readInt() == 1 ? true : false;
+        maxChargingCurrent = p.readInt();
         batteryStatus = p.readInt();
         batteryHealth = p.readInt();
         batteryPresent = p.readInt() == 1 ? true : false;
@@ -68,6 +71,7 @@ public class BatteryProperties implements Parcelable {
         p.writeInt(chargerAcOnline ? 1 : 0);
         p.writeInt(chargerUsbOnline ? 1 : 0);
         p.writeInt(chargerWirelessOnline ? 1 : 0);
+        p.writeInt(maxChargingCurrent);
         p.writeInt(batteryStatus);
         p.writeInt(batteryHealth);
         p.writeInt(batteryPresent ? 1 : 0);
diff --git a/packages/Keyguard/res/values/config.xml b/packages/Keyguard/res/values/config.xml
index 8d9d6ee..b398ab2 100644
--- a/packages/Keyguard/res/values/config.xml
+++ b/packages/Keyguard/res/values/config.xml
@@ -22,4 +22,10 @@
 
     <!-- Allow the menu hard key to be disabled in LockScreen on some devices [DO NOT TRANSLATE] -->
     <bool name="config_disableMenuKeyInLockScreen">false</bool>
+
+    <!-- Threshold in micro amperes below which a charger is rated as "slow" -->
+    <integer name="config_chargingSlowlyThreshold">1000000</integer>
+
+    <!-- Threshold in micro amperes above which a charger is rated as "fast" -->
+    <integer name="config_chargingFastThreshold">1500000</integer>
 </resources>
diff --git a/packages/Keyguard/res/values/strings.xml b/packages/Keyguard/res/values/strings.xml
index 748129c..14c8a2c 100644
--- a/packages/Keyguard/res/values/strings.xml
+++ b/packages/Keyguard/res/values/strings.xml
@@ -56,6 +56,14 @@
          is not fully charged, say that it's charging.  -->
     <string name="keyguard_plugged_in">Charging</string>
 
+    <!-- When the lock screen is showing and the phone plugged in, and the battery
+         is not fully charged, and it's plugged into a fast charger, say that it's charging fast.  -->
+    <string name="keyguard_plugged_in_charging_fast">Charging rapidly</string>
+
+    <!-- When the lock screen is showing and the phone plugged in, and the battery
+         is not fully charged, and it's plugged into a slow charger, say that it's charging slowly.  -->
+    <string name="keyguard_plugged_in_charging_slowly">Charging slowly</string>
+
     <!-- When the lock screen is showing and the battery is low, warn user to plug
          in the phone soon. -->
     <string name="keyguard_low_battery">Connect your charger.</string>
diff --git a/packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitor.java b/packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitor.java
index 581c15b..5e58b9a 100644
--- a/packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitor.java
+++ b/packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitor.java
@@ -37,6 +37,7 @@ import static android.os.BatteryManager.EXTRA_STATUS;
 import static android.os.BatteryManager.EXTRA_PLUGGED;
 import static android.os.BatteryManager.EXTRA_LEVEL;
 import static android.os.BatteryManager.EXTRA_HEALTH;
+import static android.os.BatteryManager.EXTRA_MAX_CHARGING_CURRENT;
 
 import android.media.AudioManager;
 import android.os.BatteryManager;
@@ -487,8 +488,10 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener {
                 final int plugged = intent.getIntExtra(EXTRA_PLUGGED, 0);
                 final int level = intent.getIntExtra(EXTRA_LEVEL, 0);
                 final int health = intent.getIntExtra(EXTRA_HEALTH, BATTERY_HEALTH_UNKNOWN);
+                final int maxChargingCurrent = intent.getIntExtra(EXTRA_MAX_CHARGING_CURRENT, -1);
                 final Message msg = mHandler.obtainMessage(
-                        MSG_BATTERY_UPDATE, new BatteryStatus(status, level, plugged, health));
+                        MSG_BATTERY_UPDATE, new BatteryStatus(status, level, plugged, health,
+                        maxChargingCurrent));
                 mHandler.sendMessage(msg);
             } else if (TelephonyIntents.ACTION_SIM_STATE_CHANGED.equals(action)) {
                 SimData args = SimData.fromIntent(intent);
@@ -639,15 +642,22 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener {
     }
 
     public static class BatteryStatus {
+        public static final int CHARGING_UNKNOWN = -1;
+        public static final int CHARGING_SLOWLY = 0;
+        public static final int CHARGING_REGULAR = 1;
+        public static final int CHARGING_FAST = 2;
+
         public final int status;
         public final int level;
         public final int plugged;
         public final int health;
-        public BatteryStatus(int status, int level, int plugged, int health) {
+        public final int maxChargingCurrent;
+        public BatteryStatus(int status, int level, int plugged, int health, int maxChargingCurrent) {
             this.status = status;
             this.level = level;
             this.plugged = plugged;
             this.health = health;
+            this.maxChargingCurrent = maxChargingCurrent;
         }
 
         /**
@@ -678,6 +688,12 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener {
             return level < LOW_BATTERY_THRESHOLD;
         }
 
+        public final int getChargingSpeed(int slowThreshold, int fastThreshold) {
+            return maxChargingCurrent <= 0 ? CHARGING_UNKNOWN :
+                    maxChargingCurrent < slowThreshold ? CHARGING_SLOWLY :
+                    maxChargingCurrent > fastThreshold ? CHARGING_FAST :
+                    CHARGING_REGULAR;
+        }
     }
 
     public static KeyguardUpdateMonitor getInstance(Context context) {
@@ -744,7 +760,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener {
         }
 
         // Take a guess at initial SIM state, battery status and PLMN until we get an update
-        mBatteryStatus = new BatteryStatus(BATTERY_STATUS_UNKNOWN, 100, 0, 0);
+        mBatteryStatus = new BatteryStatus(BATTERY_STATUS_UNKNOWN, 100, 0, 0, 0);
 
         // Watch for interesting updates
         final IntentFilter filter = new IntentFilter();
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardIndicationController.java b/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardIndicationController.java
index 07a055c..fc2b1ec 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardIndicationController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardIndicationController.java
@@ -26,6 +26,7 @@ import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.res.Resources;
 import android.graphics.Color;
 import android.os.BatteryManager;
 import android.os.BatteryStats;
@@ -45,6 +46,7 @@ import android.view.View;
 public class KeyguardIndicationController {
 
     private static final String TAG = "KeyguardIndicationController";
+    private static final boolean DEBUG_CHARGING_CURRENT = false;
 
     private static final int MSG_HIDE_TRANSIENT = 1;
 
@@ -52,6 +54,9 @@ public class KeyguardIndicationController {
     private final KeyguardIndicationTextView mTextView;
     private final IBatteryStats mBatteryInfo;
 
+    private final int mSlowThreshold;
+    private final int mFastThreshold;
+
     private String mRestingIndication;
     private String mTransientIndication;
     private int mTransientTextColor;
@@ -59,11 +64,18 @@ public class KeyguardIndicationController {
 
     private boolean mPowerPluggedIn;
     private boolean mPowerCharged;
+    private int mChargingSpeed;
+    private int mChargingCurrent;
 
     public KeyguardIndicationController(Context context, KeyguardIndicationTextView textView) {
         mContext = context;
         mTextView = textView;
 
+        Resources res = context.getResources();
+        mSlowThreshold = res.getInteger(R.integer.config_chargingSlowlyThreshold);
+        mFastThreshold = res.getInteger(R.integer.config_chargingFastThreshold);
+
+
         mBatteryInfo = IBatteryStats.Stub.asInterface(
                 ServiceManager.getService(BatteryStats.SERVICE_NAME));
         KeyguardUpdateMonitor.getInstance(context).registerCallback(mUpdateMonitor);
@@ -150,7 +162,11 @@ public class KeyguardIndicationController {
             return mTransientIndication;
         }
         if (mPowerPluggedIn) {
-            return computePowerIndication();
+            String indication = computePowerIndication();
+            if (DEBUG_CHARGING_CURRENT) {
+                indication = indication + mChargingCurrent;
+            }
+            return indication;
         }
         return mRestingIndication;
     }
@@ -174,7 +190,19 @@ public class KeyguardIndicationController {
         }
 
         // Fall back to simple charging label.
-        return mContext.getResources().getString(R.string.keyguard_plugged_in);
+        int chargingId;
+        switch (mChargingSpeed) {
+            case KeyguardUpdateMonitor.BatteryStatus.CHARGING_FAST:
+                chargingId = R.string.keyguard_plugged_in_charging_fast;
+                break;
+            case KeyguardUpdateMonitor.BatteryStatus.CHARGING_SLOWLY:
+                chargingId = R.string.keyguard_plugged_in_charging_slowly;
+                break;
+            default:
+                chargingId = R.string.keyguard_plugged_in;
+                break;
+        }
+        return mContext.getResources().getString(chargingId);
     }
 
     KeyguardUpdateMonitorCallback mUpdateMonitor = new KeyguardUpdateMonitorCallback() {
@@ -184,6 +212,8 @@ public class KeyguardIndicationController {
                     || status.status == BatteryManager.BATTERY_STATUS_FULL;
             mPowerPluggedIn = status.isPluggedIn() && isChargingOrFull;
             mPowerCharged = status.isCharged();
+            mChargingCurrent = status.maxChargingCurrent;
+            mChargingSpeed = status.getChargingSpeed(mSlowThreshold, mFastThreshold);
             updateIndication();
         }
     };
diff --git a/services/core/java/com/android/server/BatteryService.java b/services/core/java/com/android/server/BatteryService.java
index b3b4651..5160ddf 100644
--- a/services/core/java/com/android/server/BatteryService.java
+++ b/services/core/java/com/android/server/BatteryService.java
@@ -323,6 +323,7 @@ public final class BatteryService extends SystemService {
                     + "chargerAcOnline=" + mBatteryProps.chargerAcOnline
                     + ", chargerUsbOnline=" + mBatteryProps.chargerUsbOnline
                     + ", chargerWirelessOnline=" + mBatteryProps.chargerWirelessOnline
+                    + ", maxChargingCurrent" + mBatteryProps.maxChargingCurrent
                     + ", batteryStatus=" + mBatteryProps.batteryStatus
                     + ", batteryHealth=" + mBatteryProps.batteryHealth
                     + ", batteryPresent=" + mBatteryProps.batteryPresent
@@ -503,17 +504,21 @@ public final class BatteryService extends SystemService {
         intent.putExtra(BatteryManager.EXTRA_TEMPERATURE, mBatteryProps.batteryTemperature);
         intent.putExtra(BatteryManager.EXTRA_TECHNOLOGY, mBatteryProps.batteryTechnology);
         intent.putExtra(BatteryManager.EXTRA_INVALID_CHARGER, mInvalidCharger);
+        intent.putExtra(BatteryManager.EXTRA_MAX_CHARGING_CURRENT, mBatteryProps.maxChargingCurrent);
 
         if (DEBUG) {
             Slog.d(TAG, "Sending ACTION_BATTERY_CHANGED.  level:" + mBatteryProps.batteryLevel +
                     ", scale:" + BATTERY_SCALE + ", status:" + mBatteryProps.batteryStatus +
-                    ", health:" + mBatteryProps.batteryHealth +  ", present:" + mBatteryProps.batteryPresent +
+                    ", health:" + mBatteryProps.batteryHealth +
+                    ", present:" + mBatteryProps.batteryPresent +
                     ", voltage: " + mBatteryProps.batteryVoltage +
                     ", temperature: " + mBatteryProps.batteryTemperature +
                     ", technology: " + mBatteryProps.batteryTechnology +
-                    ", AC powered:" + mBatteryProps.chargerAcOnline + ", USB powered:" + mBatteryProps.chargerUsbOnline +
+                    ", AC powered:" + mBatteryProps.chargerAcOnline +
+                    ", USB powered:" + mBatteryProps.chargerUsbOnline +
                     ", Wireless powered:" + mBatteryProps.chargerWirelessOnline +
-                    ", icon:" + icon  + ", invalid charger:" + mInvalidCharger);
+                    ", icon:" + icon  + ", invalid charger:" + mInvalidCharger +
+                    ", maxChargingCurrent:" + mBatteryProps.maxChargingCurrent);
         }
 
         mHandler.post(new Runnable() {
@@ -618,6 +623,7 @@ public final class BatteryService extends SystemService {
                 pw.println("  AC powered: " + mBatteryProps.chargerAcOnline);
                 pw.println("  USB powered: " + mBatteryProps.chargerUsbOnline);
                 pw.println("  Wireless powered: " + mBatteryProps.chargerWirelessOnline);
+                pw.println("  Max charging current: " + mBatteryProps.maxChargingCurrent);
                 pw.println("  status: " + mBatteryProps.batteryStatus);
                 pw.println("  health: " + mBatteryProps.batteryHealth);
                 pw.println("  present: " + mBatteryProps.batteryPresent);