Data usage app bars, draw estimated cycle usage.

Show application list with normalized percentage data usage as
horizontal bar chart.  Draw estimated usage for remainder of cycle
to reinforce log scale, and break out received/sent when showing app
details.

Bug: 5038591, 4948713, 4818025
Change-Id: Ib71e73d4f692adc7fe8ae87edd0cec2a8f3976d3

2 files changed, 72 insertions, 11 deletions

diff --git a/src/com/android/settings/DataUsageSummary.java b/src/com/android/settings/DataUsageSummary.java
index f7bb32f..1f433fb 100644
--- a/src/com/android/settings/DataUsageSummary.java
+++ b/src/com/android/settings/DataUsageSummary.java
@@ -97,6 +97,7 @@ import android.widget.CompoundButton.OnCheckedChangeListener;
 import android.widget.LinearLayout;
 import android.widget.ListView;
 import android.widget.NumberPicker;
+import android.widget.ProgressBar;
 import android.widget.Spinner;
 import android.widget.Switch;
 import android.widget.TabHost;
@@ -946,8 +947,11 @@ public class DataUsageSummary extends Fragment {
                 final long now = System.currentTimeMillis();
                 final NetworkStatsHistory.Entry entry = mDetailHistory.getValues(
                         start, end, now, null);
-                final long total = entry.rxBytes + entry.txBytes;
-                mAppSubtitle.setText(Formatter.formatFileSize(context, total));
+
+                mAppSubtitle.setText(
+                        getString(R.string.data_usage_received_sent,
+                                Formatter.formatFileSize(context, entry.rxBytes),
+                                Formatter.formatFileSize(context, entry.txBytes)));
             }
 
             getLoaderManager().destroyLoader(LOADER_SUMMARY);
@@ -1110,6 +1114,7 @@ public class DataUsageSummary extends Fragment {
      */
     public static class DataUsageAdapter extends BaseAdapter {
         private ArrayList<AppUsageItem> mItems = Lists.newArrayList();
+        private long mLargest;
 
         /**
          * Bind the given {@link NetworkStats}, or {@code null} to clear list.
@@ -1143,6 +1148,7 @@ public class DataUsageSummary extends Fragment {
             }
 
             Collections.sort(mItems);
+            mLargest = (mItems.size() > 0) ? mItems.get(0).total : 0;
             notifyDataSetChanged();
         }
 
@@ -1170,12 +1176,17 @@ public class DataUsageSummary extends Fragment {
 
             final Context context = parent.getContext();
 
-            final TextView text1 = (TextView) convertView.findViewById(android.R.id.text1);
-            final TextView text2 = (TextView) convertView.findViewById(android.R.id.text2);
+            final TextView title = (TextView) convertView.findViewById(android.R.id.title);
+            final TextView summary = (TextView) convertView.findViewById(android.R.id.summary);
+            final ProgressBar progress = (ProgressBar) convertView.findViewById(
+                    android.R.id.progress);
 
             final AppUsageItem item = mItems.get(position);
-            text1.setText(resolveLabelForUid(context, item.uid));
-            text2.setText(Formatter.formatFileSize(context, item.total));
+            title.setText(resolveLabelForUid(context, item.uid));
+            summary.setText(Formatter.formatFileSize(context, item.total));
+
+            final int percentTotal = mLargest != 0 ? (int) (item.total * 100 / mLargest) : 0;
+            progress.setProgress(percentTotal);
 
             return convertView;
         }
@@ -1187,7 +1198,7 @@ public class DataUsageSummary extends Fragment {
      * {@link DataUsageSummary}.
      */
     public static class AppDetailsFragment extends Fragment {
-        public static final String EXTRA_UID = "uid";
+        private static final String EXTRA_UID = "uid";
 
         public static void show(DataUsageSummary parent, int uid) {
             final Bundle args = new Bundle();
@@ -1225,8 +1236,8 @@ public class DataUsageSummary extends Fragment {
      * {@link NetworkPolicy#limitBytes}.
      */
     public static class ConfirmLimitFragment extends DialogFragment {
-        public static final String EXTRA_MESSAGE_ID = "messageId";
-        public static final String EXTRA_LIMIT_BYTES = "limitBytes";
+        private static final String EXTRA_MESSAGE_ID = "messageId";
+        private static final String EXTRA_LIMIT_BYTES = "limitBytes";
 
         public static void show(DataUsageSummary parent) {
             final Bundle args = new Bundle();
@@ -1278,7 +1289,7 @@ public class DataUsageSummary extends Fragment {
      * Dialog to edit {@link NetworkPolicy#cycleDay}.
      */
     public static class CycleEditorFragment extends DialogFragment {
-        public static final String EXTRA_CYCLE_DAY = "cycleDay";
+        private static final String EXTRA_CYCLE_DAY = "cycleDay";
 
         public static void show(DataUsageSummary parent) {
             final NetworkPolicy policy = parent.mPolicyEditor.getPolicy(parent.mTemplate);
@@ -1331,7 +1342,7 @@ public class DataUsageSummary extends Fragment {
      * and giving the user an option to bypass.
      */
     public static class PolicyLimitFragment extends DialogFragment {
-        public static final String EXTRA_TITLE_ID = "titleId";
+        private static final String EXTRA_TITLE_ID = "titleId";
 
         public static void show(DataUsageSummary parent) {
             final Bundle args = new Bundle();
diff --git a/src/com/android/settings/widget/ChartNetworkSeriesView.java b/src/com/android/settings/widget/ChartNetworkSeriesView.java
index 10d8976..51c3c2c 100644
--- a/src/com/android/settings/widget/ChartNetworkSeriesView.java
+++ b/src/com/android/settings/widget/ChartNetworkSeriesView.java
@@ -16,6 +16,9 @@
 
 package com.android.settings.widget;
 
+import static android.text.format.DateUtils.DAY_IN_MILLIS;
+import static android.text.format.DateUtils.WEEK_IN_MILLIS;
+
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Canvas;
@@ -46,11 +49,13 @@ public class ChartNetworkSeriesView extends View {
     private Paint mPaintStroke;
     private Paint mPaintFill;
     private Paint mPaintFillSecondary;
+    private Paint mPaintEstimate;
 
     private NetworkStatsHistory mStats;
 
     private Path mPathStroke;
     private Path mPathFill;
+    private Path mPathEstimate;
 
     private long mPrimaryLeft;
     private long mPrimaryRight;
@@ -81,6 +86,7 @@ public class ChartNetworkSeriesView extends View {
 
         mPathStroke = new Path();
         mPathFill = new Path();
+        mPathEstimate = new Path();
     }
 
     void init(ChartAxis horiz, ChartAxis vert) {
@@ -104,6 +110,12 @@ public class ChartNetworkSeriesView extends View {
         mPaintFillSecondary.setColor(fillSecondary);
         mPaintFillSecondary.setStyle(Style.FILL);
         mPaintFillSecondary.setAntiAlias(true);
+
+        mPaintEstimate = new Paint();
+        mPaintEstimate.setStrokeWidth(3.0f);
+        mPaintEstimate.setColor(fillSecondary);
+        mPaintEstimate.setStyle(Style.STROKE);
+        mPaintEstimate.setAntiAlias(true);
     }
 
     public void bindNetworkStats(NetworkStatsHistory stats) {
@@ -111,6 +123,7 @@ public class ChartNetworkSeriesView extends View {
 
         mPathStroke.reset();
         mPathFill.reset();
+        mPathEstimate.reset();
         invalidate();
     }
 
@@ -138,6 +151,7 @@ public class ChartNetworkSeriesView extends View {
 
         mPathStroke.reset();
         mPathFill.reset();
+        mPathEstimate.reset();
 
         // bail when not enough stats to render
         if (mStats == null || mStats.size() < 2) return;
@@ -149,6 +163,7 @@ public class ChartNetworkSeriesView extends View {
         float firstX = 0;
         float lastX = 0;
         float lastY = 0;
+        long lastTime = Long.MIN_VALUE;
 
         // TODO: count fractional data from first bucket crossing start;
         // currently it only accepts first full bucket.
@@ -159,6 +174,7 @@ public class ChartNetworkSeriesView extends View {
         for (int i = 0; i < mStats.size(); i++) {
             entry = mStats.getValues(i, entry);
 
+            lastTime = entry.bucketStart;
             final float x = mHoriz.convertToPoint(entry.bucketStart);
             final float y = mVert.convertToPoint(totalData);
 
@@ -193,6 +209,35 @@ public class ChartNetworkSeriesView extends View {
         // drop to bottom of graph from current location
         mPathFill.lineTo(lastX, height);
         mPathFill.lineTo(firstX, height);
+
+        // build estimated data
+        mPathEstimate.moveTo(lastX, lastY);
+
+        final long now = System.currentTimeMillis();
+        final long bucketDuration = mStats.getBucketDuration();
+
+        // long window is average over two weeks
+        entry = mStats.getValues(lastTime - WEEK_IN_MILLIS * 2, lastTime, now, entry);
+        final long longWindow = (entry.rxBytes + entry.txBytes) * bucketDuration
+                / entry.bucketDuration;
+
+        long futureTime = 0;
+        while (lastX < width) {
+            futureTime += bucketDuration;
+
+            // short window is day average last week
+            final long lastWeekTime = lastTime - WEEK_IN_MILLIS + (futureTime % WEEK_IN_MILLIS);
+            entry = mStats.getValues(lastWeekTime - DAY_IN_MILLIS, lastWeekTime, now, entry);
+            final long shortWindow = (entry.rxBytes + entry.txBytes) * bucketDuration
+                    / entry.bucketDuration;
+
+            totalData += (longWindow * 7 + shortWindow * 3) / 10;
+
+            lastX = mHoriz.convertToPoint(lastTime + futureTime);
+            final float y = mVert.convertToPoint(totalData);
+
+            mPathEstimate.lineTo(lastX, y);
+        }
     }
 
     @Override
@@ -203,6 +248,11 @@ public class ChartNetworkSeriesView extends View {
         final float primaryRightPoint = mHoriz.convertToPoint(mPrimaryRight);
 
         save = canvas.save();
+        canvas.clipRect(0, 0, getWidth(), getHeight());
+        canvas.drawPath(mPathEstimate, mPaintEstimate);
+        canvas.restoreToCount(save);
+
+        save = canvas.save();
         canvas.clipRect(0, 0, primaryLeftPoint, getHeight());
         canvas.drawPath(mPathFill, mPaintFillSecondary);
         canvas.restoreToCount(save);