Merge "Rename DisplayList->RenderNode"
diff --git a/core/java/android/view/ContextThemeWrapper.java b/core/java/android/view/ContextThemeWrapper.java
index 1de9c35..0afbde9 100644
--- a/core/java/android/view/ContextThemeWrapper.java
+++ b/core/java/android/view/ContextThemeWrapper.java
@@ -26,7 +26,6 @@
  * wrapped context. 
  */
 public class ContextThemeWrapper extends ContextWrapper {
-    private Context mBase;
     private int mThemeResource;
     private Resources.Theme mTheme;
     private LayoutInflater mInflater;
@@ -39,13 +38,11 @@
     
     public ContextThemeWrapper(Context base, int themeres) {
         super(base);
-        mBase = base;
         mThemeResource = themeres;
     }
 
     @Override protected void attachBaseContext(Context newBase) {
         super.attachBaseContext(newBase);
-        mBase = newBase;
     }
 
     /**
@@ -109,11 +106,11 @@
     @Override public Object getSystemService(String name) {
         if (LAYOUT_INFLATER_SERVICE.equals(name)) {
             if (mInflater == null) {
-                mInflater = LayoutInflater.from(mBase).cloneInContext(this);
+                mInflater = LayoutInflater.from(getBaseContext()).cloneInContext(this);
             }
             return mInflater;
         }
-        return mBase.getSystemService(name);
+        return getBaseContext().getSystemService(name);
     }
     
     /**
@@ -135,7 +132,7 @@
         final boolean first = mTheme == null;
         if (first) {
             mTheme = getResources().newTheme();
-            Resources.Theme theme = mBase.getTheme();
+            Resources.Theme theme = getBaseContext().getTheme();
             if (theme != null) {
                 mTheme.setTo(theme);
             }
diff --git a/core/java/com/android/internal/widget/SwipeDismissLayout.java b/core/java/com/android/internal/widget/SwipeDismissLayout.java
index cc8ce2c..467d42e 100644
--- a/core/java/com/android/internal/widget/SwipeDismissLayout.java
+++ b/core/java/com/android/internal/widget/SwipeDismissLayout.java
@@ -126,6 +126,20 @@
                 mVelocityTracker.addMovement(ev);
                 break;
 
+            case MotionEvent.ACTION_POINTER_DOWN:
+                int actionIndex = ev.getActionIndex();
+                mActiveTouchId = ev.getPointerId(actionIndex);
+                break;
+            case MotionEvent.ACTION_POINTER_UP:
+                actionIndex = ev.getActionIndex();
+                int pointerId = ev.getPointerId(actionIndex);
+                if (pointerId == mActiveTouchId) {
+                    // This was our active pointer going up. Choose a new active pointer.
+                    int newActionIndex = actionIndex == 0 ? 1 : 0;
+                    mActiveTouchId = ev.getPointerId(newActionIndex);
+                }
+                break;
+
             case MotionEvent.ACTION_CANCEL:
             case MotionEvent.ACTION_UP:
                 resetMembers();
@@ -137,6 +151,11 @@
                 }
 
                 int pointerIndex = ev.findPointerIndex(mActiveTouchId);
+                if (pointerIndex == -1) {
+                    Log.e(TAG, "Invalid pointer index: ignoring.");
+                    mDiscardIntercept = true;
+                    break;
+                }
                 float dx = ev.getRawX() - mDownX;
                 float x = ev.getX(pointerIndex);
                 float y = ev.getY(pointerIndex);
@@ -228,11 +247,11 @@
     }
 
     private void updateDismiss(MotionEvent ev) {
+        float deltaX = ev.getRawX() - mDownX;
         if (!mDismissed) {
             mVelocityTracker.addMovement(ev);
             mVelocityTracker.computeCurrentVelocity(1000);
 
-            float deltaX = ev.getRawX() - mDownX;
             float velocityX = mVelocityTracker.getXVelocity();
             float absVelocityX = Math.abs(velocityX);
             float absVelocityY = Math.abs(mVelocityTracker.getYVelocity());
@@ -247,6 +266,13 @@
                 mDismissed = true;
             }
         }
+        // Check if the user tried to undo this.
+        if (mDismissed && mSwiping) {
+            // Check if the user's finger is actually back
+            if (deltaX < getWidth() / 2) {
+                mDismissed = false;
+            }
+        }
     }
 
     /**
diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index 8aac0fe..1475953 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -3222,10 +3222,12 @@
     // map 2d caster poly into 3d
     const int casterVertexCount = casterVertices2d.size();
     Vector3 casterPolygon[casterVertexCount];
+    float minZ = FLT_MAX;
     for (int i = 0; i < casterVertexCount; i++) {
         const Vertex& point2d = casterVertices2d[i];
         casterPolygon[i] = Vector3(point2d.x, point2d.y, 0);
         mapPointFakeZ(casterPolygon[i], casterTransformXY, casterTransformZ);
+        minZ = fmin(minZ, casterPolygon[i].z);
     }
 
     // map the centroid of the caster into 3d
@@ -3235,6 +3237,15 @@
     Vector3 centroid3d(centroid.x, centroid.y, 0);
     mapPointFakeZ(centroid3d, casterTransformXY, casterTransformZ);
 
+    // if the caster intersects the z=0 plane, lift it in Z so it doesn't
+    if (minZ < SHADOW_MIN_CASTER_Z) {
+        float casterLift = SHADOW_MIN_CASTER_Z - minZ;
+        for (int i = 0; i < casterVertexCount; i++) {
+            casterPolygon[i].z += casterLift;
+        }
+        centroid3d.z += casterLift;
+    }
+
     // draw caster's shadows
     if (mCaches.propertyAmbientShadowStrength > 0) {
         paint.setARGB(casterAlpha * mCaches.propertyAmbientShadowStrength, 0, 0, 0);
diff --git a/libs/hwui/ShadowTessellator.h b/libs/hwui/ShadowTessellator.h
index 120774b..c558460 100644
--- a/libs/hwui/ShadowTessellator.h
+++ b/libs/hwui/ShadowTessellator.h
@@ -54,6 +54,8 @@
 // The total number of indices used for drawing the shadow geometry as triangle strips.
 #define SHADOW_INDEX_COUNT (2 * SHADOW_RAY_COUNT + 1 + 2 * (SHADOW_RAY_COUNT + 1))
 
+#define SHADOW_MIN_CASTER_Z 0.001f
+
 class ShadowTessellator {
 public:
     static void tessellateAmbientShadow(const Vector3* casterPolygon,
diff --git a/libs/hwui/SpotShadow.cpp b/libs/hwui/SpotShadow.cpp
index 4e52555..8538b29 100644
--- a/libs/hwui/SpotShadow.cpp
+++ b/libs/hwui/SpotShadow.cpp
@@ -548,11 +548,6 @@
     // Validate input, receiver is always at z = 0 plane.
     bool inputPolyPositionValid = true;
     for (int i = 0; i < polyLength; i++) {
-        if (poly[i].z <= 0.00001) {
-            inputPolyPositionValid = false;
-            ALOGW("polygon below the surface");
-            break;
-        }
         if (poly[i].z >= lightPoly[0].z) {
             inputPolyPositionValid = false;
             ALOGW("polygon above the light");
diff --git a/services/core/java/com/android/server/power/DisplayPowerController.java b/services/core/java/com/android/server/power/DisplayPowerController.java
index 12d51aa..6d3702a 100644
--- a/services/core/java/com/android/server/power/DisplayPowerController.java
+++ b/services/core/java/com/android/server/power/DisplayPowerController.java
@@ -479,7 +479,6 @@
                         && mProximity == PROXIMITY_POSITIVE) {
                     mScreenOffBecauseOfProximity = true;
                     sendOnProximityPositiveWithWakelock();
-                    setScreenOn(false);
                 }
             } else if (mWaitingForNegativeProximity
                     && mScreenOffBecauseOfProximity
@@ -544,59 +543,62 @@
             mUsingScreenAutoBrightness = false;
         }
 
-        // Animate the screen on or off.
-        if (!mScreenOffBecauseOfProximity) {
-            if (mPowerRequest.wantScreenOnAny()) {
-                // Want screen on.
-                // Wait for previous off animation to complete beforehand.
-                // It is relatively short but if we cancel it and switch to the
-                // on animation immediately then the results are pretty ugly.
-                if (!mElectronBeamOffAnimator.isStarted()) {
-                    // Turn the screen on.  The contents of the screen may not yet
-                    // be visible if the electron beam has not been dismissed because
-                    // its last frame of animation is solid black.
-                    setScreenOn(true);
+        // Animate the screen on or off unless blocked.
+        if (mScreenOffBecauseOfProximity) {
+            // Screen off due to proximity.
+            setScreenOn(false);
+            unblockScreenOn();
+        } else if (mPowerRequest.wantScreenOnAny()) {
+            // Want screen on.
+            // Wait for previous off animation to complete beforehand.
+            // It is relatively short but if we cancel it and switch to the
+            // on animation immediately then the results are pretty ugly.
+            if (!mElectronBeamOffAnimator.isStarted()) {
+                // Turn the screen on.  The contents of the screen may not yet
+                // be visible if the electron beam has not been dismissed because
+                // its last frame of animation is solid black.
+                setScreenOn(true);
 
-                    if (mPowerRequest.blockScreenOn
-                            && mPowerState.getElectronBeamLevel() == 0.0f) {
-                        blockScreenOn();
-                    } else {
-                        unblockScreenOn();
-                        if (USE_ELECTRON_BEAM_ON_ANIMATION) {
-                            if (!mElectronBeamOnAnimator.isStarted()) {
-                                if (mPowerState.getElectronBeamLevel() == 1.0f) {
-                                    mPowerState.dismissElectronBeam();
-                                } else if (mPowerState.prepareElectronBeam(
-                                        mElectronBeamFadesConfig ?
-                                                ElectronBeam.MODE_FADE :
-                                                        ElectronBeam.MODE_WARM_UP)) {
-                                    mElectronBeamOnAnimator.start();
-                                } else {
-                                    mElectronBeamOnAnimator.end();
-                                }
+                if (mPowerRequest.blockScreenOn
+                        && mPowerState.getElectronBeamLevel() == 0.0f) {
+                    blockScreenOn();
+                } else {
+                    unblockScreenOn();
+                    if (USE_ELECTRON_BEAM_ON_ANIMATION) {
+                        if (!mElectronBeamOnAnimator.isStarted()) {
+                            if (mPowerState.getElectronBeamLevel() == 1.0f) {
+                                mPowerState.dismissElectronBeam();
+                            } else if (mPowerState.prepareElectronBeam(
+                                    mElectronBeamFadesConfig ?
+                                            ElectronBeam.MODE_FADE :
+                                                    ElectronBeam.MODE_WARM_UP)) {
+                                mElectronBeamOnAnimator.start();
+                            } else {
+                                mElectronBeamOnAnimator.end();
                             }
-                        } else {
-                            mPowerState.setElectronBeamLevel(1.0f);
-                            mPowerState.dismissElectronBeam();
                         }
+                    } else {
+                        mPowerState.setElectronBeamLevel(1.0f);
+                        mPowerState.dismissElectronBeam();
                     }
                 }
-            } else {
-                // Want screen off.
-                // Wait for previous on animation to complete beforehand.
-                if (!mElectronBeamOnAnimator.isStarted()) {
-                    if (!mElectronBeamOffAnimator.isStarted()) {
-                        if (mPowerState.getElectronBeamLevel() == 0.0f) {
-                            setScreenOn(false);
-                        } else if (mPowerState.prepareElectronBeam(
-                                mElectronBeamFadesConfig ?
-                                        ElectronBeam.MODE_FADE :
-                                                ElectronBeam.MODE_COOL_DOWN)
-                                && mPowerState.isScreenOn()) {
-                            mElectronBeamOffAnimator.start();
-                        } else {
-                            mElectronBeamOffAnimator.end();
-                        }
+            }
+        } else {
+            // Want screen off.
+            // Wait for previous on animation to complete beforehand.
+            unblockScreenOn();
+            if (!mElectronBeamOnAnimator.isStarted()) {
+                if (!mElectronBeamOffAnimator.isStarted()) {
+                    if (mPowerState.getElectronBeamLevel() == 0.0f) {
+                        setScreenOn(false);
+                    } else if (mPowerState.prepareElectronBeam(
+                            mElectronBeamFadesConfig ?
+                                    ElectronBeam.MODE_FADE :
+                                            ElectronBeam.MODE_COOL_DOWN)
+                            && mPowerState.isScreenOn()) {
+                        mElectronBeamOffAnimator.start();
+                    } else {
+                        mElectronBeamOffAnimator.end();
                     }
                 }
             }
@@ -641,15 +643,15 @@
     private void unblockScreenOn() {
         if (mScreenOnWasBlocked) {
             mScreenOnWasBlocked = false;
-            if (DEBUG) {
-                Slog.d(TAG, "Unblocked screen on after " +
-                        (SystemClock.elapsedRealtime() - mScreenOnBlockStartRealTime) + " ms");
+            long delay = SystemClock.elapsedRealtime() - mScreenOnBlockStartRealTime;
+            if (delay > 1000 || DEBUG) {
+                Slog.d(TAG, "Unblocked screen on after " + delay + " ms");
             }
         }
     }
 
     private void setScreenOn(boolean on) {
-        if (!mPowerState.isScreenOn() == on) {
+        if (mPowerState.isScreenOn() != on) {
             mPowerState.setScreenOn(on);
             if (on) {
                 mNotifier.onScreenOn();
diff --git a/services/core/java/com/android/server/power/DisplayPowerState.java b/services/core/java/com/android/server/power/DisplayPowerState.java
index 42af4b4..8e331ad 100644
--- a/services/core/java/com/android/server/power/DisplayPowerState.java
+++ b/services/core/java/com/android/server/power/DisplayPowerState.java
@@ -304,8 +304,15 @@
 
             int brightness = mScreenOn && mElectronBeamLevel > 0f ? mScreenBrightness : 0;
             if (mPhotonicModulator.setState(mScreenOn, brightness)) {
+                if (DEBUG) {
+                    Slog.d(TAG, "Screen ready");
+                }
                 mScreenReady = true;
                 invokeCleanListenerIfNeeded();
+            } else {
+                if (DEBUG) {
+                    Slog.d(TAG, "Screen not ready");
+                }
             }
         }
     };
@@ -355,7 +362,7 @@
                         AsyncTask.THREAD_POOL_EXECUTOR.execute(mTask);
                     }
                 }
-                return mChangeInProgress;
+                return !mChangeInProgress;
             }
         }
 
diff --git a/services/core/java/com/android/server/power/PowerManagerService.java b/services/core/java/com/android/server/power/PowerManagerService.java
index 40ebe8d..e0a46b9 100644
--- a/services/core/java/com/android/server/power/PowerManagerService.java
+++ b/services/core/java/com/android/server/power/PowerManagerService.java
@@ -1047,6 +1047,9 @@
         if (!mSystemReady || mDirty == 0) {
             return;
         }
+        if (!Thread.holdsLock(mLock)) {
+            Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked");
+        }
 
         // Phase 0: Basic state updates.
         updateIsPoweredLocked(mDirty);