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Commit 24120a5c authored by Selim Cinek's avatar Selim Cinek
Browse files

Introduced overscrolling for the panel expansion 

Notifications now overscroll in a rubberbandy motion when expanding.

Bug: 14486987
Change-Id: I5ad47027adab10d6996e70f489e8c2550220e224
parent 0045cc1b

packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java

+17 −3
Original line number Diff line number Diff line
@@ -21,9 +21,7 @@ import android.animation.AnimatorListenerAdapter; 
import android.animation.ObjectAnimator;

import android.animation.ValueAnimator;

import android.content.Context;

import android.graphics.Path;

import android.util.AttributeSet;

import android.util.Log;

import android.view.MotionEvent;

import android.view.VelocityTracker;

import android.view.View;
@@ -32,7 +30,6 @@ import android.view.ViewTreeObserver; 
import android.view.accessibility.AccessibilityEvent;

import android.view.animation.AnimationUtils;

import android.view.animation.Interpolator;

import android.view.animation.PathInterpolator;

import android.widget.LinearLayout;



import com.android.systemui.R;
@@ -645,6 +642,23 @@ public class NotificationPanelView extends PanelView implements 
        mNotificationStackScroller.onExpansionStopped();

    }



    @Override

    protected void onOverExpansionChanged(float overExpansion) {

        float currentOverScroll = mNotificationStackScroller.getCurrentOverScrolledPixels(true);

        mNotificationStackScroller.setOverScrolledPixels(currentOverScroll + overExpansion

                        - mOverExpansion, true /* onTop */, false /* animate */);

        super.onOverExpansionChanged(overExpansion);

    }



    @Override

    protected void onTrackingStopped() {

        super.onTrackingStopped();

        mOverExpansion = 0.0f;

        mNotificationStackScroller.setOverScrolledPixels(0.0f, true /* onTop */,

                true /* animate */);

    }





    @Override

    public void onHeightChanged(ExpandableView view) {

        requestPanelHeightUpdate();

packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java

+10 −0
Original line number Diff line number Diff line
@@ -38,6 +38,7 @@ import java.io.PrintWriter; 
public class PanelView extends FrameLayout {

    public static final boolean DEBUG = PanelBar.DEBUG;

    public static final String TAG = PanelView.class.getSimpleName();

    protected float mOverExpansion;



    private final void logf(String fmt, Object... args) {

        Log.v(TAG, (mViewName != null ? (mViewName + ": ") : "") + String.format(fmt, args));
@@ -403,6 +404,11 @@ public class PanelView extends FrameLayout { 
    public void setExpandedHeightInternal(float h) {

        float fh = getMaxPanelHeight();

        mExpandedHeight = Math.min(fh, h);

        float overExpansion = h - fh;

        overExpansion = Math.max(0, overExpansion);

        if (overExpansion != mOverExpansion) {

            onOverExpansionChanged(overExpansion);

        }



        if (DEBUG) {

            logf("setExpansion: height=%.1f fh=%.1f tracking=%s", h, fh, mTracking ? "T" : "f");
@@ -412,6 +418,10 @@ public class PanelView extends FrameLayout { 
        mExpandedFraction = Math.min(1f, (fh == 0) ? 0 : h / fh);

    }



    protected void onOverExpansionChanged(float overExpansion) {

        mOverExpansion = overExpansion;

    }



    protected void onHeightUpdated(float expandedHeight) {

        requestLayout();

    }