Implement nice QS expansion transition in Keyguard

Bug: 16010455
Bug: 15192264
Change-Id: I764652e73ea8e87ad12b9241e038bff843a0a221

3 files changed, 80 insertions, 27 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
index e7e18cf..602b914 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -139,6 +139,7 @@ public class NotificationPanelView extends PanelView implements
     private boolean mIsLaunchTransitionRunning;
     private Runnable mLaunchAnimationEndRunnable;
     private boolean mOnlyAffordanceInThisMotion;
+    private boolean mKeyguardStatusBarAnimatingIn;
 
     public NotificationPanelView(Context context, AttributeSet attrs) {
         super(context, attrs);
@@ -201,7 +202,7 @@ public class NotificationPanelView extends PanelView implements
         mKeyguardStatusView.setPivotY((FONT_HEIGHT - CAP_HEIGHT) / 2048f * mClockView.getTextSize());
 
         // Calculate quick setting heights.
-        mQsMinExpansionHeight = mHeader.getCollapsedHeight() + mQsPeekHeight;
+        mQsMinExpansionHeight = mKeyguardShowing ? 0 : mHeader.getCollapsedHeight() + mQsPeekHeight;
         mQsMaxExpansionHeight = mHeader.getExpandedHeight() + mQsContainer.getHeight();
         if (mQsExpanded) {
             if (mQsFullyExpanded) {
@@ -673,6 +674,7 @@ public class NotificationPanelView extends PanelView implements
     public void setBarState(int statusBarState) {
         boolean keyguardShowing = statusBarState == StatusBarState.KEYGUARD
                 || statusBarState == StatusBarState.SHADE_LOCKED;
+        mKeyguardStatusBar.setAlpha(1f);
         mKeyguardStatusBar.setVisibility(keyguardShowing ? View.VISIBLE : View.INVISIBLE);
         if (!mKeyguardShowing && keyguardShowing) {
             setQsTranslation(mQsExpansionHeight);
@@ -686,7 +688,7 @@ public class NotificationPanelView extends PanelView implements
     private void updateQsState() {
         boolean expandVisually = mQsExpanded || mStackScrollerOverscrolling;
         mHeader.setVisibility((mQsExpanded || !mKeyguardShowing) ? View.VISIBLE : View.INVISIBLE);
-        mHeader.setExpanded(mQsExpanded && !mStackScrollerOverscrolling);
+        mHeader.setExpanded(mKeyguardShowing || (mQsExpanded && !mStackScrollerOverscrolling));
         mNotificationStackScroller.setScrollingEnabled(
                 mStatusBarState != StatusBarState.KEYGUARD && (!mQsExpanded
                         || mQsExpansionFromOverscroll));
@@ -705,10 +707,22 @@ public class NotificationPanelView extends PanelView implements
             setQsExpanded(false);
         }
         mQsExpansionHeight = height;
-        mHeader.setExpansion(getQsExpansionFraction());
+        mHeader.setExpansion(getHeaderExpansionFraction());
         setQsTranslation(height);
         requestScrollerTopPaddingUpdate(false /* animate */);
         updateNotificationScrim(height);
+        if (mKeyguardShowing) {
+            float alpha = getQsExpansionFraction();
+            alpha *= 2;
+            alpha = Math.min(1, alpha);
+            alpha = 1 - alpha;
+            if (alpha == 0f) {
+                mKeyguardStatusBar.setVisibility(View.INVISIBLE);
+            } else {
+                mKeyguardStatusBar.setVisibility(View.VISIBLE);
+                mKeyguardStatusBar.setAlpha(alpha);
+            }
+        }
     }
 
     private void updateNotificationScrim(float height) {
@@ -718,12 +732,33 @@ public class NotificationPanelView extends PanelView implements
         mNotificationStackScroller.setScrimAlpha(progress);
     }
 
+    private float getHeaderExpansionFraction() {
+        if (!mKeyguardShowing) {
+            return getQsExpansionFraction();
+        } else {
+            return 1f;
+        }
+    }
+
     private void setQsTranslation(float height) {
         mQsContainer.setY(height - mQsContainer.getHeight() + getHeaderTranslation());
+        if (mKeyguardShowing) {
+            mHeader.setY(interpolate(getQsExpansionFraction(), -mHeader.getHeight(), 0));
+        }
+    }
+
+    private float calculateQsTopPadding() {
+        if (mKeyguardShowing) {
+            return interpolate(getQsExpansionFraction(),
+                    mNotificationStackScroller.getIntrinsicPadding() - mNotificationTopPadding,
+                    mQsMaxExpansionHeight);
+        } else {
+            return mQsExpansionHeight;
+        }
     }
 
     private void requestScrollerTopPaddingUpdate(boolean animate) {
-        mNotificationStackScroller.updateTopPadding(mQsExpansionHeight,
+        mNotificationStackScroller.updateTopPadding(calculateQsTopPadding(),
                 mScrollView.getScrollY(),
                 mAnimateNextTopPaddingChange || animate);
         mAnimateNextTopPaddingChange = false;
@@ -799,8 +834,9 @@ public class NotificationPanelView extends PanelView implements
         if (!mQsExpansionEnabled) {
             return false;
         }
-        boolean onHeader = x >= mHeader.getLeft() && x <= mHeader.getRight()
-                && y >= mHeader.getTop() && y <= mHeader.getBottom();
+        View header = mKeyguardShowing ? mKeyguardStatusBar : mHeader;
+        boolean onHeader = x >= header.getLeft() && x <= header.getRight()
+                && y >= header.getTop() && y <= header.getBottom();
         if (mQsExpanded) {
             return onHeader || (mScrollView.isScrolledToBottom() && yDiff < 0);
         } else {
@@ -867,12 +903,9 @@ public class NotificationPanelView extends PanelView implements
         }
         int maxHeight;
         if (mTwoFingerQsExpand || mQsExpanded || mIsExpanding && mQsExpandedWhenExpandingStarted) {
-            maxHeight = (int) calculatePanelHeightQsExpanded();
+            maxHeight = Math.max(calculatePanelHeightQsExpanded(), calculatePanelHeightShade());
         } else {
-            int emptyBottomMargin = mNotificationStackScroller.getEmptyBottomMargin();
-            maxHeight = mNotificationStackScroller.getHeight() - emptyBottomMargin
-                    - mTopPaddingAdjustment;
-            maxHeight += mNotificationStackScroller.getTopPaddingOverflow();
+            maxHeight = calculatePanelHeightShade();
         }
         maxHeight = Math.max(maxHeight, min);
         return maxHeight;
@@ -917,7 +950,15 @@ public class NotificationPanelView extends PanelView implements
         return qsTempMaxExpansion;
     }
 
-    private float calculatePanelHeightQsExpanded() {
+    private int calculatePanelHeightShade() {
+        int emptyBottomMargin = mNotificationStackScroller.getEmptyBottomMargin();
+        int maxHeight = mNotificationStackScroller.getHeight() - emptyBottomMargin
+                - mTopPaddingAdjustment;
+        maxHeight += mNotificationStackScroller.getTopPaddingOverflow();
+        return maxHeight;
+    }
+
+    private int calculatePanelHeightQsExpanded() {
         float notificationHeight = mNotificationStackScroller.getHeight()
                 - mNotificationStackScroller.getEmptyBottomMargin()
                 - mNotificationStackScroller.getTopPadding();
@@ -930,7 +971,7 @@ public class NotificationPanelView extends PanelView implements
                     - getScrollViewScrollY();
             totalHeight = Math.max(fullyCollapsedHeight, mNotificationStackScroller.getHeight());
         }
-        return totalHeight;
+        return (int) totalHeight;
     }
 
     private int getScrollViewScrollY() {
@@ -1035,7 +1076,9 @@ public class NotificationPanelView extends PanelView implements
         }
         alpha = Math.max(0, Math.min(alpha, 1));
         alpha = (float) Math.pow(alpha, 0.75);
-        mKeyguardStatusBar.setAlpha(alpha);
+        if (!mQsExpanded && !mKeyguardStatusBarAnimatingIn) {
+            mKeyguardStatusBar.setAlpha(alpha);
+        }
         mKeyguardBottomArea.setAlpha(alpha);
         setQsTranslation(mQsExpansionHeight);
     }
@@ -1358,4 +1401,8 @@ public class NotificationPanelView extends PanelView implements
         mEmptyDragAmount = amount * factor;
         positionClockAndNotifications();
     }
+
+    private static float interpolate(float t, float start, float end) {
+        return (1 - t) * start + t * end;
+    }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
index 6e7266e..5e54b30 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
@@ -409,8 +409,8 @@ public class PhoneStatusBar extends BaseStatusBar implements DemoMode,
     private Interpolator mLinearOutSlowIn;
     private Interpolator mLinearInterpolator = new LinearInterpolator();
     private Interpolator mBackdropInterpolator = new AccelerateDecelerateInterpolator();
-    private Interpolator mAlphaIn = new PathInterpolator(0f, 0.2f, 1f, 1f);
-    private Interpolator mAlphaOut = new PathInterpolator(0f, 0f, 0.8f, 1f);
+    public static final Interpolator ALPHA_IN = new PathInterpolator(0.4f, 0f, 1f, 1f);
+    public static final Interpolator ALPHA_OUT = new PathInterpolator(0f, 0f, 0.8f, 1f);
 
     private FrameLayout mBackdrop;
     private ImageView mBackdropFront, mBackdropBack;
@@ -1937,7 +1937,7 @@ public class PhoneStatusBar extends BaseStatusBar implements DemoMode,
                 .alpha(0f)
                 .setDuration(160)
                 .setStartDelay(0)
-                .setInterpolator(mAlphaOut)
+                .setInterpolator(ALPHA_OUT)
                 .withEndAction(new Runnable() {
                     @Override
                     public void run() {
@@ -1959,7 +1959,7 @@ public class PhoneStatusBar extends BaseStatusBar implements DemoMode,
         v.animate()
                 .alpha(1f)
                 .setDuration(320)
-                .setInterpolator(mAlphaIn)
+                .setInterpolator(ALPHA_IN)
                 .setStartDelay(50);
 
         // Synchronize the motion with the Keyguard fading if necessary.
@@ -3414,20 +3414,18 @@ public class PhoneStatusBar extends BaseStatusBar implements DemoMode,
     }
 
     private void updateDozingState() {
-        final boolean bottomGone = mKeyguardBottomArea.getVisibility() == View.GONE;
+        if (mState != StatusBarState.KEYGUARD) {
+            return;
+        }
         if (mDozing) {
             mNotificationPanel.setBackgroundColor(0xff000000);
             mKeyguardStatusBar.setVisibility(View.INVISIBLE);
-            if (!bottomGone) {
-                mKeyguardBottomArea.setVisibility(View.INVISIBLE);
-            }
+            mKeyguardBottomArea.setVisibility(View.INVISIBLE);
             mStackScroller.setDark(true, false /*animate*/);
         } else {
             mNotificationPanel.setBackground(null);
             mKeyguardStatusBar.setVisibility(View.VISIBLE);
-            if (!bottomGone) {
                 mKeyguardBottomArea.setVisibility(View.VISIBLE);
-            }
             mStackScroller.setDark(false, false /*animate*/);
         }
         mScrimController.setDozing(mDozing);
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarHeaderView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarHeaderView.java
index 039b908..29b1403 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarHeaderView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarHeaderView.java
@@ -286,13 +286,17 @@ public class StatusBarHeaderView extends RelativeLayout implements View.OnClickL
             if (detached) {
                 getOverlay().add(mSignalCluster);
             } else {
-                getOverlay().remove(mSignalCluster);
-                mSystemIcons.addView(mSignalCluster, 1);
+                reattachSignalCluster();
             }
         }
         mSignalClusterDetached = detached;
     }
 
+    private void reattachSignalCluster() {
+        getOverlay().remove(mSignalCluster);
+        mSystemIcons.addView(mSignalCluster, 1);
+    }
+
     private void updateSystemIconsLayoutParams() {
         RelativeLayout.LayoutParams lp = (LayoutParams) mSystemIconsSuperContainer.getLayoutParams();
         int rule = mExpanded
@@ -441,9 +445,12 @@ public class StatusBarHeaderView extends RelativeLayout implements View.OnClickL
     }
 
     public void onSystemIconsDetached() {
+        if (mSignalClusterDetached) {
+            reattachSignalCluster();
+            mSignalClusterDetached = false;
+        }
         if (mStatusIcons != null) {
             mStatusIcons.setVisibility(View.VISIBLE);
-            mStatusIcons.setAlpha(1f);
         }
         if (mSignalCluster != null) {
             mSignalCluster.setVisibility(View.VISIBLE);
@@ -504,6 +511,7 @@ public class StatusBarHeaderView extends RelativeLayout implements View.OnClickL
         mShowEmergencyCallsOnly = show;
         if (mExpanded) {
             updateVisibilities();
+            requestCaptureValues();
         }
     }