Use trilinear filtering to draw the analog clock

The clock is often drawn scaled down from its original size. This
change turns on trilinear filtering which makes the resampled
result look a little nicer. The difference is visible even on
xhdpi devices.

This change relies on a new XML attribute introduced in API level
18 so the makefile was updated to use the current SDK. The attribute
will be safely ignored on previous versions of the platform.

Change-Id: I506e13398496b66b5dd8f2d789ea338d99371635

Android.mk

@@ -12,7 +12,7 @@ LOCAL_PACKAGE_NAME := DeskClock
 
 LOCAL_OVERRIDES_PACKAGES := AlarmClock
 
-LOCAL_SDK_VERSION := 17
+LOCAL_SDK_VERSION := current
 
 LOCAL_PROGUARD_FLAG_FILES := proguard.flags
 

res/drawable/clock_analog_dial_mipmap.xml

+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2012 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.
+-->
+
+<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
+    android:mipMap="true"
+    android:src="@drawable/clock_analog_dial" />

res/drawable/clock_analog_hour_mipmap.xml

+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2012 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.
+-->
+
+<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
+    android:mipMap="true"
+    android:src="@drawable/clock_analog_hour" />

res/drawable/clock_analog_minute_mipmap.xml

+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2012 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.
+-->
+
+<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
+    android:mipMap="true"
+    android:src="@drawable/clock_analog_minute" />

res/drawable/clock_analog_second_mipmap.xml

+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2012 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.
+-->
+
+<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
+    android:mipMap="true"
+    android:src="@drawable/clock_analog_second" />

res/layout/desk_clock_saver.xml

@@ -47,9 +47,9 @@
         dc:jewelRadius="5dp"
         dc:jewelOffset="23dp"
         dc:jewelColor="@color/clock_white"
-        android:dial="@drawable/clock_analog_dial"
-        android:hand_hour="@drawable/clock_analog_hour"
-        android:hand_minute="@drawable/clock_analog_minute"
+        android:dial="@drawable/clock_analog_dial_mipmap"
+        android:hand_hour="@drawable/clock_analog_hour_mipmap"
+        android:hand_minute="@drawable/clock_analog_minute_mipmap"
         android:layout_marginBottom="@dimen/time_margin_bottom"/>
 
     <LinearLayout

res/layout/main_clock_frame.xml

@@ -31,9 +31,9 @@
             android:layout_marginLeft="@dimen/analog_clock_margin"
             android:layout_marginRight="@dimen/analog_clock_margin"
             android:layout_gravity="center_horizontal"
-            android:dial="@drawable/clock_analog_dial"
-            android:hand_hour="@drawable/clock_analog_hour"
-            android:hand_minute="@drawable/clock_analog_minute"
+            android:dial="@drawable/clock_analog_dial_mipmap"
+            android:hand_hour="@drawable/clock_analog_hour_mipmap"
+            android:hand_minute="@drawable/clock_analog_minute_mipmap"
             android:layout_marginBottom="@dimen/time_margin_bottom"/>
         <include layout="@layout/desk_clock_time_date"
             android:id="@+id/digital_clock"

res/layout/world_clock_item.xml

@@ -36,9 +36,9 @@
             android:layout_width="@dimen/world_clock_analog_size"
             android:layout_height="@dimen/world_clock_analog_size"
             android:layout_gravity="center_horizontal"
-            android:dial="@drawable/clock_analog_dial"
-            android:hand_hour="@drawable/clock_analog_hour"
-            android:hand_minute="@drawable/clock_analog_minute"/>
+            android:dial="@drawable/clock_analog_dial_mipmap"
+            android:hand_hour="@drawable/clock_analog_hour_mipmap"
+            android:hand_minute="@drawable/clock_analog_minute_mipmap"/>
     </FrameLayout>
     <com.android.deskclock.widget.EllipsizeLayout
         android:id="@+id/city_name_layout"

src/com/android/deskclock/AnalogClock.java

@@ -79,10 +79,10 @@ public class AnalogClock extends View {
         mContext = context;
         Resources r = mContext.getResources();
 
-        mDial = r.getDrawable(R.drawable.clock_analog_dial);
-        mHourHand = r.getDrawable(R.drawable.clock_analog_hour);
-        mMinuteHand = r.getDrawable(R.drawable.clock_analog_minute);
-        mSecondHand = r.getDrawable(R.drawable.clock_analog_second);
+        mDial = r.getDrawable(R.drawable.clock_analog_dial_mipmap);
+        mHourHand = r.getDrawable(R.drawable.clock_analog_hour_mipmap);
+        mMinuteHand = r.getDrawable(R.drawable.clock_analog_minute_mipmap);
+        mSecondHand = r.getDrawable(R.drawable.clock_analog_second_mipmap);
 
         TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.AnalogClock);
         mDotRadius = a.getDimension(R.styleable.AnalogClock_jewelRadius, 0);