Iterate on data usage chart UI.

Switched to inflating chart views from XML, using attributes for
configuration.  Start using drawable assets for chart components
instead of manually painting.  Include hand-cut assets, and animate
between states when touched to invoke.

Clamp sweeps to valid chart ranges and prepare for sweep labels.

Bug: 4768483, 4598460
Change-Id: Ic660c35bec826eb5e3f6a1dde3cc04d8c437ef2b

res/layout/data_usage_chart.xml

@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2011 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.
+-->
+
+<com.android.settings.widget.DataUsageChartView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:settings="http://schemas.android.com/apk/res/com.android.settings"
+    android:layout_width="match_parent"
+    android:layout_height="220dip"
+    android:padding="16dip">
+
+    <com.android.settings.widget.ChartGridView
+        android:id="@+id/grid"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_gravity="left|bottom"
+        settings:primaryDrawable="@drawable/data_grid_primary"
+        settings:secondaryDrawable="@drawable/data_grid_secondary"
+        settings:borderDrawable="@drawable/data_grid_border"
+        settings:labelColor="#24aae1" />
+
+    <com.android.settings.widget.ChartNetworkSeriesView
+        android:id="@+id/series"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_gravity="left|bottom"
+        settings:strokeColor="#24aae1"
+        settings:fillColor="#c050ade5"
+        settings:fillColorSecondary="#88566abc" />
+
+    <com.android.settings.widget.ChartSweepView
+        android:id="@+id/sweep_left"
+        android:layout_width="wrap_content"
+        android:layout_height="match_parent"
+        android:layout_gravity="center_horizontal"
+        settings:sweepDrawable="@drawable/data_sweep_left"
+        settings:followAxis="horizontal"
+        settings:showLabel="false" />
+
+    <com.android.settings.widget.ChartSweepView
+        android:id="@+id/sweep_right"
+        android:layout_width="wrap_content"
+        android:layout_height="match_parent"
+        android:layout_gravity="center_horizontal"
+        settings:sweepDrawable="@drawable/data_sweep_right"
+        settings:followAxis="horizontal"
+        settings:showLabel="false" />
+
+    <com.android.settings.widget.ChartSweepView
+        android:id="@+id/sweep_limit"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_vertical"
+        settings:sweepDrawable="@drawable/data_sweep_limit"
+        settings:followAxis="vertical"
+        settings:showLabel="true" />
+
+    <com.android.settings.widget.ChartSweepView
+        android:id="@+id/sweep_warning"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_vertical"
+        settings:sweepDrawable="@drawable/data_sweep_warning"
+        settings:followAxis="vertical"
+        settings:showLabel="true" />
+
+</com.android.settings.widget.DataUsageChartView>

res/layout/data_usage_item.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2011 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.
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:minHeight="48dip"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@android:id/text1"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="6dip"
+        android:layout_marginTop="6dip"
+        android:textAppearance="?android:attr/textAppearanceMedium" />
+
+    <TextView
+        android:id="@android:id/text2"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="6dip"
+        android:layout_marginBottom="6dip"
+        android:textAppearance="?android:attr/textAppearanceSmall" />
+
+</LinearLayout>