Align tiles between QSPanel and QSCustomizer

Give the tiles in QSCustomizer the same margin (half of
qs_tile_margin_horizontal in each side) and set the RecyclerView padding
to be the same as QSPanel's TileLayout margin. That way, the tiles align
when QSCustomizer opens (only in portrait) and the animation looks
better.

Test: manual, multiple densities
Fixes: 164207558
Change-Id: Ied960c9292c93c09f5ef04853d3b1a25bd778237

packages/SystemUI/src/com/android/systemui/qs/QSContainerImpl.java

@@ -23,6 +23,7 @@ import android.content.Context;
 import android.content.res.Configuration;
 import android.graphics.Point;
 import android.util.AttributeSet;
+import android.util.Pair;
 import android.view.View;
 import android.widget.FrameLayout;
 
@@ -282,7 +283,7 @@ public class QSContainerImpl extends FrameLayout {
             View view = getChildAt(i);
             if (view == mStatusBarBackground || view == mBackgroundGradient
                     || view == mQSCustomizer) {
-                // Some views are always full width
+                // Some views are always full width or have dependent padding
                 continue;
             }
             LayoutParams lp = (LayoutParams) view.getLayoutParams();
@@ -291,6 +292,9 @@ public class QSContainerImpl extends FrameLayout {
             if (view == mQSPanelContainer) {
                 // QS panel lays out some of its content full width
                 mQSPanel.setContentMargins(mContentPaddingStart, mContentPaddingEnd);
+                Pair<Integer, Integer> margins = mQSPanel.getVisualSideMargins();
+                // Apply paddings based on QSPanel
+                mQSCustomizer.setContentPaddings(margins.first, margins.second);
             } else if (view == mHeader) {
                 // The header contains the QQS panel which needs to have special padding, to
                 // visually align them.

packages/SystemUI/src/com/android/systemui/qs/QSPanel.java

@@ -25,12 +25,12 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.Resources;
-import android.graphics.PointF;
 import android.metrics.LogMaker;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
 import android.util.AttributeSet;
+import android.util.Pair;
 import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -1077,6 +1077,10 @@ public class QSPanel extends LinearLayout implements Tunable, Callback, Brightne
         updateTileLayoutMargins();
     }
 
+    public Pair<Integer, Integer> getVisualSideMargins() {
+        return new Pair(mVisualMarginStart, mUsingHorizontalLayout ? 0 : mVisualMarginEnd);
+    }
+
     private void updateTileLayoutMargins() {
         int marginEnd = mVisualMarginEnd;
         if (mUsingHorizontalLayout) {

packages/SystemUI/src/com/android/systemui/qs/customize/QSCustomizer.java

@@ -132,6 +132,7 @@ public class QSCustomizer extends LinearLayout implements OnMenuItemClickListene
         layout.setSpanSizeLookup(mTileAdapter.getSizeLookup());
         mRecyclerView.setLayoutManager(layout);
         mRecyclerView.addItemDecoration(mTileAdapter.getItemDecoration());
+        mRecyclerView.addItemDecoration(mTileAdapter.getMarginItemDecoration());
         DefaultItemAnimator animator = new DefaultItemAnimator();
         animator.setMoveDuration(TileAdapter.MOVE_DURATION);
         mRecyclerView.setItemAnimator(animator);
@@ -221,6 +222,22 @@ public class QSCustomizer extends LinearLayout implements OnMenuItemClickListene
         }
     }
 
+    /**
+     * Sets the padding for the RecyclerView. Also, updates the margin between the tiles in the
+     * {@link TileAdapter}.
+     */
+    public void setContentPaddings(int paddingStart, int paddingEnd) {
+        int halfMargin = mContext.getResources()
+                .getDimensionPixelSize(R.dimen.qs_tile_margin_horizontal) / 2;
+        mTileAdapter.changeHalfMargin(halfMargin);
+        mRecyclerView.setPaddingRelative(
+                paddingStart,
+                mRecyclerView.getPaddingTop(),
+                paddingEnd,
+                mRecyclerView.getPaddingBottom()
+        );
+    }
+
     private void queryTiles() {
         mTileQueryHelper.queryTiles(mHost);
     }

packages/SystemUI/src/com/android/systemui/qs/customize/TileAdapter.java

@@ -18,6 +18,7 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Canvas;
+import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.os.Handler;
 import android.view.LayoutInflater;
@@ -75,6 +76,7 @@ public class TileAdapter extends RecyclerView.Adapter<Holder> implements TileSta
     private final List<TileInfo> mTiles = new ArrayList<>();
     private final ItemTouchHelper mItemTouchHelper;
     private final ItemDecoration mDecoration;
+    private final MarginTileDecoration mMarginDecoration;
     private final int mMinNumTiles;
     private int mEditIndex;
     private int mTileDividerIndex;
@@ -97,6 +99,7 @@ public class TileAdapter extends RecyclerView.Adapter<Holder> implements TileSta
         mUiEventLogger = uiEventLogger;
         mItemTouchHelper = new ItemTouchHelper(mCallbacks);
         mDecoration = new TileItemDecoration(context);
+        mMarginDecoration = new MarginTileDecoration();
         mMinNumTiles = context.getResources().getInteger(R.integer.quick_settings_min_num_tiles);
         mAccessibilityDelegate = new TileAdapterDelegate();
     }
@@ -123,6 +126,14 @@ public class TileAdapter extends RecyclerView.Adapter<Holder> implements TileSta
         return mDecoration;
     }
 
+    public ItemDecoration getMarginItemDecoration() {
+        return mMarginDecoration;
+    }
+
+    public void changeHalfMargin(int halfMargin) {
+        mMarginDecoration.setHalfMargin(halfMargin);
+    }
+
     public void saveSpecs(QSTileHost host) {
         List<String> newSpecs = new ArrayList<>();
         clearAccessibilityState();
@@ -596,7 +607,6 @@ public class TileAdapter extends RecyclerView.Adapter<Holder> implements TileSta
             mDrawable = context.getDrawable(R.drawable.qs_customize_tile_decoration);
         }
 
-
         @Override
         public void onDraw(Canvas c, RecyclerView parent, State state) {
             super.onDraw(c, parent, state);
@@ -624,6 +634,25 @@ public class TileAdapter extends RecyclerView.Adapter<Holder> implements TileSta
         }
     }
 
+    private static class MarginTileDecoration extends ItemDecoration {
+        private int mHalfMargin;
+
+        public void setHalfMargin(int halfMargin) {
+            mHalfMargin = halfMargin;
+        }
+
+        @Override
+        public void getItemOffsets(@NonNull Rect outRect, @NonNull View view,
+                @NonNull RecyclerView parent, @NonNull State state) {
+            if (view instanceof TextView) {
+                super.getItemOffsets(outRect, view, parent, state);
+            } else {
+                outRect.left = mHalfMargin;
+                outRect.right = mHalfMargin;
+            }
+        }
+    }
+
     private final ItemTouchHelper.Callback mCallbacks = new ItemTouchHelper.Callback() {
 
         @Override