QS - Prototype visual affordance for detail panels

Builds on ag/9335278 to show "..." below tiles that support direct to
detail view on touch.

Test: manual
Change-Id: I1c192656505bac228a3935f0aa498c37a468d973

packages/SystemUI/plugin/src/com/android/systemui/plugins/qs/QSTile.java

@@ -68,6 +68,14 @@ public interface QSTile {
 
     void destroy();
 
+    /**
+      * return true if the tile supports detail views, and not
+      * only boolean states
+      */
+    default boolean supportsDetailView() {
+        return false;
+    }
+
     CharSequence getTileLabel();
 
     State getState();

packages/SystemUI/res/layout/qs_tile_detail_text.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2019 The Android Open Source Project
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+
+<!-- use 'dp' instead of 'sp' as we do not want the text to increase
+     if the user scales the font size -->
+<TextView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:layout_gravity="bottom|center_horizontal"
+    android:text="..."
+    android:textSize="16dp"
+    android:fontFamily="@*android:string/config_headlineFontFamily"
+    android:singleLine="true"
+    android:visibility="gone"
+    android:paddingBottom="@dimen/qs_tile_detail_padding"
+    android:clickable="false"
+    android:focusable="false" />
+

packages/SystemUI/res/values/dimens.xml

@@ -457,6 +457,7 @@
     <dimen name="qs_page_indicator_width">16dp</dimen>
     <dimen name="qs_page_indicator_height">8dp</dimen>
     <dimen name="qs_tile_icon_size">24dp</dimen>
+    <dimen name="qs_tile_detail_padding">3dp</dimen>
     <dimen name="qs_tile_text_size">12sp</dimen>
     <dimen name="qs_tile_divider_height">1dp</dimen>
     <dimen name="qs_panel_padding">16dp</dimen>

packages/SystemUI/src/com/android/systemui/qs/tileimpl/QSTileBaseView.java

@@ -36,6 +36,7 @@ import android.text.TextUtils;
 import android.util.Log;
 import android.util.PathParser;
 import android.view.Gravity;
+import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.accessibility.AccessibilityEvent;
@@ -43,6 +44,7 @@ import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.Switch;
+import android.widget.TextView;
 
 import com.android.settingslib.Utils;
 import com.android.systemui.R;
@@ -67,6 +69,7 @@ public class QSTileBaseView extends com.android.systemui.plugins.qs.QSTileView {
     private boolean mShowRippleEffect = true;
 
     private final ImageView mBg;
+    private final TextView mDetailText;
     private final int mColorActive;
     private final int mColorInactive;
     private final int mColorDisabled;
@@ -106,6 +109,12 @@ public class QSTileBaseView extends com.android.systemui.plugins.qs.QSTileView {
                 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT,
                 Gravity.CENTER);
         mIconFrame.addView(mIcon, params);
+
+        // "..." afforadance below icon
+        mDetailText = (TextView) LayoutInflater.from(context).inflate(R.layout.qs_tile_detail_text,
+                mIconFrame, false);
+        mIconFrame.addView(mDetailText);
+
         mIconFrame.setClipChildren(false);
         mIconFrame.setClipToPadding(false);
 
@@ -161,6 +170,10 @@ public class QSTileBaseView extends com.android.systemui.plugins.qs.QSTileView {
             tile.longClick();
             return true;
         });
+
+        if (tile.supportsDetailView()) {
+            mDetailText.setVisibility(View.VISIBLE);
+        }
     }
 
     public void init(OnClickListener click, OnClickListener secondaryClick,
@@ -214,6 +227,8 @@ public class QSTileBaseView extends com.android.systemui.plugins.qs.QSTileView {
             mCircleColor = circleColor;
         }
 
+        mDetailText.setTextColor(QSTileImpl.getColorForState(getContext(), state.state));
+
         mShowRippleEffect = state.showRippleEffect;
         setClickable(state.state != Tile.STATE_UNAVAILABLE);
         setLongClickable(state.handlesLongClick);
@@ -352,4 +367,4 @@ public class QSTileBaseView extends com.android.systemui.plugins.qs.QSTileView {
             }
         }
     }
-}
+}

packages/SystemUI/src/com/android/systemui/qs/tiles/WifiTile.java

@@ -117,6 +117,11 @@ public class WifiTile extends QSTileImpl<SignalState> {
         else return WIFI_SETTINGS;
     }
 
+    @Override
+    public boolean supportsDetailView() {
+        return getDetailAdapter() != null && mQSSettingsPanelOption == QSSettingsPanel.OPEN_CLICK;
+    }
+
     @Override
     protected void handleClick() {
         if (mQSSettingsPanelOption == QSSettingsPanel.OPEN_CLICK) {