From f7134664681a62941aecacd245848ad911508883 Mon Sep 17 00:00:00 2001
From: Sebastian Kaspari <s.kaspari@gmail.com>
Date: Mon, 21 May 2012 21:40:32 +0200
Subject: [PATCH] Update ViewPagerIndicator to 2.3.1.

---
 .../adapter/ConversationPagerAdapter.java     |   5 +-
 libs/ViewPagerIndicator/AndroidManifest.xml   |   4 +-
 libs/ViewPagerIndicator/checkstyle.xml        | 115 -----
 libs/ViewPagerIndicator/pom.xml               |  16 +-
 .../res/layout/vpi__tab.xml                   |  13 -
 .../res/values/vpi__attrs.xml                 |  60 ++-
 .../res/values/vpi__colors.xml                |   2 +-
 .../res/values/vpi__defaults.xml              |  16 +-
 .../res/values/vpi__styles.xml                |  44 +-
 .../CirclePageIndicator.java                  |  61 +--
 .../viewpagerindicator/LinePageIndicator.java | 439 ++++++++++++++++++
 .../com/viewpagerindicator/PageIndicator.java |  10 +-
 .../viewpagerindicator/TabPageIndicator.java  |  96 ++--
 .../TitlePageIndicator.java                   | 145 +++---
 .../com/viewpagerindicator/TitleProvider.java |  28 --
 .../UnderlinePageIndicator.java               | 391 ++++++++++++++++
 16 files changed, 1074 insertions(+), 371 deletions(-)
 delete mode 100644 libs/ViewPagerIndicator/checkstyle.xml
 delete mode 100644 libs/ViewPagerIndicator/res/layout/vpi__tab.xml
 create mode 100644 libs/ViewPagerIndicator/src/com/viewpagerindicator/LinePageIndicator.java
 delete mode 100644 libs/ViewPagerIndicator/src/com/viewpagerindicator/TitleProvider.java
 create mode 100644 libs/ViewPagerIndicator/src/com/viewpagerindicator/UnderlinePageIndicator.java

diff --git a/application/src/org/yaaic/adapter/ConversationPagerAdapter.java b/application/src/org/yaaic/adapter/ConversationPagerAdapter.java
index fd7fd1d..db789b4 100644
--- a/application/src/org/yaaic/adapter/ConversationPagerAdapter.java
+++ b/application/src/org/yaaic/adapter/ConversationPagerAdapter.java
@@ -33,14 +33,13 @@ import android.support.v4.view.ViewPager;
 import android.view.View;
 
 import com.viewpagerindicator.TitlePageIndicator;
-import com.viewpagerindicator.TitleProvider;
 
 /**
  * Adapter for displaying a pager of conversations.
  *
  * @author Sebastian Kaspari <sebastian@yaaic.org>
  */
-public class ConversationPagerAdapter extends PagerAdapter implements TitleProvider
+public class ConversationPagerAdapter extends PagerAdapter
 {
     private final Server server;
     private LinkedList<ConversationInfo> conversations;
@@ -267,7 +266,7 @@ public class ConversationPagerAdapter extends PagerAdapter implements TitleProvi
      * Get the title for the given position. Used by the {@link TitlePageIndicator}.
      */
     @Override
-    public String getTitle(int position)
+    public String getPageTitle(int position)
     {
         Conversation conversation = getItem(position);
 
diff --git a/libs/ViewPagerIndicator/AndroidManifest.xml b/libs/ViewPagerIndicator/AndroidManifest.xml
index 0febb49..19e0a5e 100644
--- a/libs/ViewPagerIndicator/AndroidManifest.xml
+++ b/libs/ViewPagerIndicator/AndroidManifest.xml
@@ -2,8 +2,8 @@
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.viewpagerindicator"
-    android:versionCode="30"
-    android:versionName="2.2.3">
+    android:versionCode="50"
+    android:versionName="2.3.1">
 
     <uses-sdk android:minSdkVersion="4" />
 </manifest>
diff --git a/libs/ViewPagerIndicator/checkstyle.xml b/libs/ViewPagerIndicator/checkstyle.xml
deleted file mode 100644
index 5c3e7da..0000000
--- a/libs/ViewPagerIndicator/checkstyle.xml
+++ /dev/null
@@ -1,115 +0,0 @@
-<?xml version="1.0"?>
-<!DOCTYPE module PUBLIC
-    "-//Puppy Crawl//DTD Check Configuration 1.2//EN"
-    "http://www.puppycrawl.com/dtds/configuration_1_2.dtd">
-
-<module name="Checker">
-    <!--module name="NewlineAtEndOfFile"/-->
-    <module name="FileLength"/>
-    <module name="FileTabCharacter"/>
-
-    <!-- Trailing spaces -->
-    <module name="RegexpSingleline">
-        <property name="format" value="\s+$"/>
-        <property name="message" value="Line has trailing spaces."/>
-    </module>
-
-    <module name="TreeWalker">
-        <property name="cacheFile" value="${checkstyle.cache.file}"/>
-
-        <!-- Checks for Javadoc comments.                     -->
-        <!-- See http://checkstyle.sf.net/config_javadoc.html -->
-        <!--module name="JavadocMethod"/-->
-        <!--module name="JavadocType"/-->
-        <!--module name="JavadocVariable"/-->
-        <!--module name="JavadocStyle"/-->
-
-
-        <!-- Checks for Naming Conventions.                  -->
-        <!-- See http://checkstyle.sf.net/config_naming.html -->
-        <module name="ConstantName"/>
-        <module name="LocalFinalVariableName"/>
-        <module name="LocalVariableName"/>
-        <module name="MemberName"/>
-        <module name="MethodName"/>
-        <module name="PackageName"/>
-        <module name="ParameterName"/>
-        <module name="StaticVariableName"/>
-        <module name="TypeName"/>
-
-
-        <!-- Checks for imports                              -->
-        <!-- See http://checkstyle.sf.net/config_import.html -->
-        <module name="AvoidStarImport"/>
-        <module name="IllegalImport"/> <!-- defaults to sun.* packages -->
-        <module name="RedundantImport"/>
-        <module name="UnusedImports"/>
-
-
-        <!-- Checks for Size Violations.                    -->
-        <!-- See http://checkstyle.sf.net/config_sizes.html -->
-        <!--module name="LineLength"/-->
-        <!--module name="MethodLength"/-->
-        <!--module name="ParameterNumber"/-->
-
-
-        <!-- Checks for whitespace                               -->
-        <!-- See http://checkstyle.sf.net/config_whitespace.html -->
-        <!--module name="EmptyForIteratorPad"/-->
-        <!--module name="MethodParamPad"/-->
-        <!--module name="NoWhitespaceAfter"/-->
-        <!--module name="NoWhitespaceBefore"/-->
-        <!--module name="OperatorWrap"/-->
-        <!--module name="ParenPad"/-->
-        <!--module name="TypecastParenPad"/-->
-        <!--module name="WhitespaceAfter"/-->
-        <!--module name="WhitespaceAround"/-->
-
-
-        <!-- Modifier Checks                                    -->
-        <!-- See http://checkstyle.sf.net/config_modifiers.html -->
-        <!--module name="ModifierOrder"/-->
-        <!--module name="RedundantModifier"/-->
-
-
-        <!-- Checks for blocks. You know, those {}'s         -->
-        <!-- See http://checkstyle.sf.net/config_blocks.html -->
-        <!--module name="AvoidNestedBlocks"/-->
-        <!--module name="EmptyBlock"/-->
-        <!--module name="LeftCurly"/-->
-        <!--module name="NeedBraces"/-->
-        <!--module name="RightCurly"/-->
-
-
-        <!-- Checks for common coding problems               -->
-        <!-- See http://checkstyle.sf.net/config_coding.html -->
-        <!--module name="AvoidInlineConditionals"/-->
-        <!--module name="DoubleCheckedLocking"/-->    <!-- MY FAVOURITE -->
-        <!--module name="EmptyStatement"/-->
-        <!--module name="EqualsHashCode"/-->
-        <!--module name="HiddenField"/-->
-        <!--module name="IllegalInstantiation"/-->
-        <!--module name="InnerAssignment"/-->
-        <!--module name="MagicNumber"/-->
-        <!--module name="MissingSwitchDefault"/-->
-        <!--module name="RedundantThrows"/-->
-        <!--module name="SimplifyBooleanExpression"/-->
-        <!--module name="SimplifyBooleanReturn"/-->
-
-        <!-- Checks for class design                         -->
-        <!-- See http://checkstyle.sf.net/config_design.html -->
-        <!--module name="DesignForExtension"/-->
-        <!--module name="FinalClass"/-->
-        <!--module name="HideUtilityClassConstructor"/-->
-        <!--module name="InterfaceIsType"/-->
-        <!--module name="VisibilityModifier"/-->
-
-
-        <!-- Miscellaneous other checks.                   -->
-        <!-- See http://checkstyle.sf.net/config_misc.html -->
-        <!--module name="ArrayTypeStyle"/-->
-        <!--module name="FinalParameters"/-->
-        <!--module name="TodoComment"/-->
-        <!--module name="UpperEll"/-->
-    </module>
-</module>
diff --git a/libs/ViewPagerIndicator/pom.xml b/libs/ViewPagerIndicator/pom.xml
index 74398f8..a6e0cc1 100644
--- a/libs/ViewPagerIndicator/pom.xml
+++ b/libs/ViewPagerIndicator/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>com.viewpagerindicator</groupId>
 		<artifactId>parent</artifactId>
-		<version>2.2.3</version>
+		<version>2.3.1</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 	
@@ -23,8 +23,8 @@
 		</dependency>
 
 		<dependency>
-			<groupId>android.support</groupId>
-			<artifactId>compatibility-v4</artifactId>
+			<groupId>com.google.android</groupId>
+			<artifactId>support-v4</artifactId>
 			<scope>provided</scope>
 		</dependency>
 	</dependencies>
@@ -39,19 +39,11 @@
 				<extensions>true</extensions>
 			</plugin>
 
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-javadoc-plugin</artifactId>
-				<configuration>
-					<skip>true</skip>
-				</configuration>
-			</plugin>
-
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-checkstyle-plugin</artifactId>
 				<configuration>
-					<configLocation>${project.basedir}/checkstyle.xml</configLocation>
+					<configLocation>../checkstyle.xml</configLocation>
 				</configuration>
 				<executions>
 					<execution>
diff --git a/libs/ViewPagerIndicator/res/layout/vpi__tab.xml b/libs/ViewPagerIndicator/res/layout/vpi__tab.xml
deleted file mode 100644
index 980bec4..0000000
--- a/libs/ViewPagerIndicator/res/layout/vpi__tab.xml
+++ /dev/null
@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<view
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    class="com.viewpagerindicator.TabPageIndicator$TabView"
-    style="?attr/vpiTabPageIndicatorStyle">
-    <TextView
-        android:id="@android:id/text1"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:gravity="center"
-        style="?attr/vpiTabTextStyle" />
-</view>
\ No newline at end of file
diff --git a/libs/ViewPagerIndicator/res/values/vpi__attrs.xml b/libs/ViewPagerIndicator/res/values/vpi__attrs.xml
index 8ea49aa..8ff0893 100644
--- a/libs/ViewPagerIndicator/res/values/vpi__attrs.xml
+++ b/libs/ViewPagerIndicator/res/values/vpi__attrs.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2011 Patrik Åkerfeldt
-     Copyright (C) 2011 Jake Wharton
+<!-- Copyright (C) 2012 Jake Wharton
+     Copyright (C) 2011 Patrik Åkerfeldt
 
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
@@ -19,28 +19,30 @@
     <declare-styleable name="ViewPagerIndicator">
         <!-- Style of the circle indicator. -->
         <attr name="vpiCirclePageIndicatorStyle" format="reference"/>
-        
+        <!-- Style of the line indicator. -->
+        <attr name="vpiLinePageIndicatorStyle" format="reference"/>
         <!-- Style of the title indicator. -->
         <attr name="vpiTitlePageIndicatorStyle" format="reference"/>
-        
-        <!-- Style of the tab indicator. -->
+        <!-- Style of the tab indicator's tabs. -->
         <attr name="vpiTabPageIndicatorStyle" format="reference"/>
-        <!-- Style of the text in a tab. -->
-        <attr name="vpiTabTextStyle" format="reference"/>
+        <!-- Style of the underline indicator. -->
+        <attr name="vpiUnderlinePageIndicatorStyle" format="reference"/>
     </declare-styleable>
 
+    <attr name="centered" format="boolean" />
+    <attr name="selectedColor" format="color" />
+    <attr name="strokeWidth" format="dimension" />
+    <attr name="unselectedColor" format="color" />
+
     <declare-styleable name="CirclePageIndicator">
         <!-- Whether or not the indicators should be centered. -->
-        <attr name="centered" format="boolean" />
+        <attr name="centered" />
         <!-- Color of the filled circle that represents the current page. -->
         <attr name="fillColor" format="color" />
         <!-- Color of the filled circles that represents pages. -->
         <attr name="pageColor" format="color" />
         <!-- Orientation of the indicator. -->
-        <attr name="orientation">
-            <enum name="horizontal" value="0" />
-            <enum name="vertical" value="1" />
-        </attr>
+        <attr name="android:orientation"/>
         <!-- Radius of the circles. This is also the spacing between circles. -->
         <attr name="radius" format="dimension" />
         <!-- Whether or not the selected indicator snaps to the circles. -->
@@ -48,7 +50,22 @@
         <!-- Color of the open circles. -->
         <attr name="strokeColor" format="color" />
         <!-- Width of the stroke used to draw the circles. -->
-        <attr name="strokeWidth" format="dimension" />
+        <attr name="strokeWidth" />
+    </declare-styleable>
+
+    <declare-styleable name="LinePageIndicator">
+        <!-- Whether or not the indicators should be centered. -->
+        <attr name="centered" />
+        <!-- Color of the unselected lines that represent the pages. -->
+        <attr name="unselectedColor" />
+        <!-- Color of the selected line that represents the current page. -->
+        <attr name="selectedColor" />
+        <!-- Width of each indicator line. -->
+        <attr name="lineWidth" format="dimension" />
+        <!-- Width of each indicator line's stroke. -->
+        <attr name="strokeWidth" />
+        <!-- Width of the gap between each indicator line. -->
+        <attr name="gapWidth" format="dimension" />
     </declare-styleable>
 
     <declare-styleable name="TitlePageIndicator">
@@ -71,16 +88,27 @@
         <!-- Padding between the bottom of the title and the footer. -->
         <attr name="footerPadding" format="dimension" />
         <!-- Color of the selected title. -->
-        <attr name="selectedColor" format="color" />
+        <attr name="selectedColor" />
         <!-- Whether or not the selected item is displayed as bold. -->
         <attr name="selectedBold" format="boolean" />
         <!-- Color of regular titles. -->
-        <attr name="textColor" format="color" />
+        <attr name="android:textColor" />
         <!-- Size of title text. -->
-        <attr name="textSize" format="dimension" />
+        <attr name="android:textSize" />
         <!-- Padding between titles when bumping into each other. -->
         <attr name="titlePadding" format="dimension" />
         <!-- Padding between titles and the top of the View. -->
         <attr name="topPadding" format="dimension" />
     </declare-styleable>
+
+    <declare-styleable name="UnderlinePageIndicator">
+        <!-- Whether or not the selected indicator fades. -->
+        <attr name="fades" format="boolean" />
+        <!-- Length of the delay to fade the indicator. -->
+        <attr name="fadeDelay" format="integer" />
+        <!-- Length of the indicator fade to transparent. -->
+        <attr name="fadeLength" format="integer" />
+        <!-- Color of the selected line that represents the current page. -->
+        <attr name="selectedColor" />
+    </declare-styleable>
 </resources>
diff --git a/libs/ViewPagerIndicator/res/values/vpi__colors.xml b/libs/ViewPagerIndicator/res/values/vpi__colors.xml
index c0d958f..62ca607 100644
--- a/libs/ViewPagerIndicator/res/values/vpi__colors.xml
+++ b/libs/ViewPagerIndicator/res/values/vpi__colors.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2011 The Android Open Source Project
+<!-- Copyright (C) 2012 Jake Wharton
 
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
diff --git a/libs/ViewPagerIndicator/res/values/vpi__defaults.xml b/libs/ViewPagerIndicator/res/values/vpi__defaults.xml
index 5796b21..245ae92 100644
--- a/libs/ViewPagerIndicator/res/values/vpi__defaults.xml
+++ b/libs/ViewPagerIndicator/res/values/vpi__defaults.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2011 Jake Wharton
+<!-- Copyright (C) 2012 Jake Wharton
 
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
@@ -24,8 +24,15 @@
     <color name="default_circle_indicator_stroke_color">#FFDDDDDD</color>
     <dimen name="default_circle_indicator_stroke_width">1dp</dimen>
 
+    <dimen name="default_line_indicator_line_width">12dp</dimen>
+    <dimen name="default_line_indicator_gap_width">4dp</dimen>
+    <dimen name="default_line_indicator_stroke_width">1dp</dimen>
+    <color name="default_line_indicator_selected_color">#FF33B5E5</color>
+    <color name="default_line_indicator_unselected_color">#FFBBBBBB</color>
+    <bool name="default_line_indicator_centered">true</bool>
+
     <dimen name="default_title_indicator_clip_padding">4dp</dimen>
-    <color name="default_title_indicator_footer_color">#FF6899FF</color>
+    <color name="default_title_indicator_footer_color">#FF33B5E5</color>
     <dimen name="default_title_indicator_footer_line_height">2dp</dimen>
     <integer name="default_title_indicator_footer_indicator_style">2</integer>
     <dimen name="default_title_indicator_footer_indicator_height">4dp</dimen>
@@ -37,4 +44,9 @@
     <dimen name="default_title_indicator_text_size">15dp</dimen>
     <dimen name="default_title_indicator_title_padding">5dp</dimen>
     <dimen name="default_title_indicator_top_padding">7dp</dimen>
+
+    <bool name="default_underline_indicator_fades">true</bool>
+    <integer name="default_underline_indicator_fade_delay">300</integer>
+    <integer name="default_underline_indicator_fade_length">400</integer>
+    <color name="default_underline_indicator_selected_color">#FF33B5E5</color>
 </resources>
\ No newline at end of file
diff --git a/libs/ViewPagerIndicator/res/values/vpi__styles.xml b/libs/ViewPagerIndicator/res/values/vpi__styles.xml
index b09c14c..c928819 100644
--- a/libs/ViewPagerIndicator/res/values/vpi__styles.xml
+++ b/libs/ViewPagerIndicator/res/values/vpi__styles.xml
@@ -16,58 +16,26 @@
 
 <resources>
     <style name="Theme.PageIndicatorDefaults" parent="android:Theme">
-        <item name="vpiCirclePageIndicatorStyle">@style/Widget.CirclePageIndicator</item>
-        <item name="vpiTitlePageIndicatorStyle">@style/Widget.TitlePageIndicator</item>
         <item name="vpiTabPageIndicatorStyle">@style/Widget.TabPageIndicator</item>
-        <item name="vpiTabTextStyle">@style/Widget.TabPageIndicator.Text</item>
-    </style>
-    
-    <style name="Widget"></style>
-
-    <style name="Widget.CirclePageIndicator" parent="Widget">
-        <item name="centered">@bool/default_circle_indicator_centered</item>
-        <item name="fillColor">@color/default_circle_indicator_fill_color</item>
-        <item name="pageColor">@color/default_circle_indicator_page_color</item>
-        <item name="orientation">@integer/default_circle_indicator_orientation</item>
-        <item name="radius">@dimen/default_circle_indicator_radius</item>
-        <item name="snap">@bool/default_circle_indicator_snap</item>
-        <item name="strokeColor">@color/default_circle_indicator_stroke_color</item>
-        <item name="strokeWidth">@dimen/default_circle_indicator_stroke_width</item>
     </style>
 
-    <style name="Widget.TitlePageIndicator" parent="Widget">
-        <item name="clipPadding">@dimen/default_title_indicator_clip_padding</item>
-        <item name="footerColor">@color/default_title_indicator_footer_color</item>
-        <item name="footerLineHeight">@dimen/default_title_indicator_footer_line_height</item>
-        <item name="footerIndicatorStyle">@integer/default_title_indicator_footer_indicator_style</item>
-        <item name="footerIndicatorHeight">@dimen/default_title_indicator_footer_indicator_height</item>
-        <item name="footerIndicatorUnderlinePadding">@dimen/default_title_indicator_footer_indicator_underline_padding</item>
-        <item name="footerPadding">@dimen/default_title_indicator_footer_padding</item>
-        <item name="selectedColor">@color/default_title_indicator_selected_color</item>
-        <item name="selectedBold">@bool/default_title_indicator_selected_bold</item>
-        <item name="textColor">@color/default_title_indicator_text_color</item>
-        <item name="textSize">@dimen/default_title_indicator_text_size</item>
-        <item name="titlePadding">@dimen/default_title_indicator_title_padding</item>
-        <item name="topPadding">@dimen/default_title_indicator_top_padding</item>
+    <style name="Widget">
     </style>
-    
+
     <style name="Widget.TabPageIndicator" parent="Widget">
-        <item name="android:gravity">center_horizontal</item>
+        <item name="android:gravity">center</item>
         <item name="android:background">@drawable/vpi__tab_indicator</item>
         <item name="android:paddingLeft">22dip</item>
         <item name="android:paddingRight">22dip</item>
         <item name="android:paddingTop">12dp</item>
         <item name="android:paddingBottom">12dp</item>
-    </style>
-    <style name="Widget.TabPageIndicator.Text" parent="Widget">
         <item name="android:textAppearance">@style/TextAppearance.TabPageIndicator</item>
-        <item name="android:textColor">@color/vpi__dark_theme</item>
         <item name="android:textSize">12sp</item>
-        <item name="android:textStyle">bold</item>
         <item name="android:maxLines">1</item>
     </style>
-    
+
     <style name="TextAppearance.TabPageIndicator" parent="Widget">
-        
+        <item name="android:textStyle">bold</item>
+        <item name="android:textColor">@color/vpi__dark_theme</item>
     </style>
 </resources>
diff --git a/libs/ViewPagerIndicator/src/com/viewpagerindicator/CirclePageIndicator.java b/libs/ViewPagerIndicator/src/com/viewpagerindicator/CirclePageIndicator.java
index a20f01c..be3a856 100644
--- a/libs/ViewPagerIndicator/src/com/viewpagerindicator/CirclePageIndicator.java
+++ b/libs/ViewPagerIndicator/src/com/viewpagerindicator/CirclePageIndicator.java
@@ -32,31 +32,31 @@ import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewConfiguration;
 
+import static android.graphics.Paint.ANTI_ALIAS_FLAG;
+import static android.widget.LinearLayout.HORIZONTAL;
+import static android.widget.LinearLayout.VERTICAL;
+
 /**
  * Draws circles (one for each view). The current view position is filled and
  * others are only stroked.
  */
 public class CirclePageIndicator extends View implements PageIndicator {
-    public static final int HORIZONTAL = 0;
-    public static final int VERTICAL = 1;
+    private static final int INVALID_POINTER = -1;
 
     private float mRadius;
-    private final Paint mPaintPageFill;
-    private final Paint mPaintStroke;
-    private final Paint mPaintFill;
+    private final Paint mPaintPageFill = new Paint(ANTI_ALIAS_FLAG);
+    private final Paint mPaintStroke = new Paint(ANTI_ALIAS_FLAG);
+    private final Paint mPaintFill = new Paint(ANTI_ALIAS_FLAG);
     private ViewPager mViewPager;
     private ViewPager.OnPageChangeListener mListener;
     private int mCurrentPage;
     private int mSnapPage;
-    private int mCurrentOffset;
+    private float mPageOffset;
     private int mScrollState;
-    private int mPageSize;
     private int mOrientation;
     private boolean mCentered;
     private boolean mSnap;
 
-    private static final int INVALID_POINTER = -1;
-
     private int mTouchSlop;
     private float mLastMotionX = -1;
     private int mActivePointerId = INVALID_POINTER;
@@ -73,6 +73,7 @@ public class CirclePageIndicator extends View implements PageIndicator {
 
     public CirclePageIndicator(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);
+        if (isInEditMode()) return;
 
         //Load defaults from resources
         final Resources res = getResources();
@@ -86,18 +87,15 @@ public class CirclePageIndicator extends View implements PageIndicator {
         final boolean defaultSnap = res.getBoolean(R.bool.default_circle_indicator_snap);
 
         //Retrieve styles attributes
-        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CirclePageIndicator, defStyle, R.style.Widget_CirclePageIndicator);
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CirclePageIndicator, defStyle, 0);
 
         mCentered = a.getBoolean(R.styleable.CirclePageIndicator_centered, defaultCentered);
-        mOrientation = a.getInt(R.styleable.CirclePageIndicator_orientation, defaultOrientation);
-        mPaintPageFill = new Paint(Paint.ANTI_ALIAS_FLAG);
+        mOrientation = a.getInt(R.styleable.CirclePageIndicator_android_orientation, defaultOrientation);
         mPaintPageFill.setStyle(Style.FILL);
         mPaintPageFill.setColor(a.getColor(R.styleable.CirclePageIndicator_pageColor, defaultPageColor));
-        mPaintStroke = new Paint(Paint.ANTI_ALIAS_FLAG);
         mPaintStroke.setStyle(Style.STROKE);
         mPaintStroke.setColor(a.getColor(R.styleable.CirclePageIndicator_strokeColor, defaultStrokeColor));
         mPaintStroke.setStrokeWidth(a.getDimension(R.styleable.CirclePageIndicator_strokeWidth, defaultStrokeWidth));
-        mPaintFill = new Paint(Paint.ANTI_ALIAS_FLAG);
         mPaintFill.setStyle(Style.FILL);
         mPaintFill.setColor(a.getColor(R.styleable.CirclePageIndicator_fillColor, defaultFillColor));
         mRadius = a.getDimension(R.styleable.CirclePageIndicator_radius, defaultRadius);
@@ -142,7 +140,6 @@ public class CirclePageIndicator extends View implements PageIndicator {
             case HORIZONTAL:
             case VERTICAL:
                 mOrientation = orientation;
-                updatePageSize();
                 requestLayout();
                 break;
 
@@ -191,11 +188,6 @@ public class CirclePageIndicator extends View implements PageIndicator {
         return mSnap;
     }
 
-    /*
-     * (non-Javadoc)
-     *
-     * @see android.view.View#onDraw(android.graphics.Canvas)
-     */
     @Override
     protected void onDraw(Canvas canvas) {
         super.onDraw(canvas);
@@ -267,8 +259,8 @@ public class CirclePageIndicator extends View implements PageIndicator {
 
         //Draw the filled circle according to the current scroll
         float cx = (mSnap ? mSnapPage : mCurrentPage) * threeRadius;
-        if (!mSnap && (mPageSize != 0)) {
-            cx += (mCurrentOffset * 1.0f / mPageSize) * threeRadius;
+        if (!mSnap) {
+            cx += mPageOffset * threeRadius;
         }
         if (mOrientation == HORIZONTAL) {
             dX = longOffset + cx;
@@ -308,13 +300,10 @@ public class CirclePageIndicator extends View implements PageIndicator {
                 }
 
                 if (mIsDragging) {
-                    if (!mViewPager.isFakeDragging()) {
-                        mViewPager.beginFakeDrag();
-                    }
-
                     mLastMotionX = x;
-
-                    mViewPager.fakeDragBy(deltaX);
+                    if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
+                        mViewPager.fakeDragBy(deltaX);
+                    }
                 }
 
                 break;
@@ -366,21 +355,20 @@ public class CirclePageIndicator extends View implements PageIndicator {
 
     @Override
     public void setViewPager(ViewPager view) {
+        if (mViewPager == view) {
+            return;
+        }
+        if (mViewPager != null) {
+            mViewPager.setOnPageChangeListener(null);
+        }
         if (view.getAdapter() == null) {
             throw new IllegalStateException("ViewPager does not have adapter instance.");
         }
         mViewPager = view;
         mViewPager.setOnPageChangeListener(this);
-        updatePageSize();
         invalidate();
     }
 
-    private void updatePageSize() {
-        if (mViewPager != null) {
-            mPageSize = (mOrientation == HORIZONTAL) ? mViewPager.getWidth() : mViewPager.getHeight();
-        }
-    }
-
     @Override
     public void setViewPager(ViewPager view, int initialPosition) {
         setViewPager(view);
@@ -414,8 +402,7 @@ public class CirclePageIndicator extends View implements PageIndicator {
     @Override
     public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
         mCurrentPage = position;
-        mCurrentOffset = positionOffsetPixels;
-        updatePageSize();
+        mPageOffset = positionOffset;
         invalidate();
 
         if (mListener != null) {
diff --git a/libs/ViewPagerIndicator/src/com/viewpagerindicator/LinePageIndicator.java b/libs/ViewPagerIndicator/src/com/viewpagerindicator/LinePageIndicator.java
new file mode 100644
index 0000000..b3e0862
--- /dev/null
+++ b/libs/ViewPagerIndicator/src/com/viewpagerindicator/LinePageIndicator.java
@@ -0,0 +1,439 @@
+/*
+ * Copyright (C) 2012 Jake Wharton
+ *
+ * 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.
+ */
+package com.viewpagerindicator;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.support.v4.view.MotionEventCompat;
+import android.support.v4.view.ViewConfigurationCompat;
+import android.support.v4.view.ViewPager;
+import android.util.AttributeSet;
+import android.util.FloatMath;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewConfiguration;
+
+/**
+ * Draws a line for each page. The current page line is colored differently
+ * than the unselected page lines.
+ */
+public class LinePageIndicator extends View implements PageIndicator {
+    private static final int INVALID_POINTER = -1;
+
+    private final Paint mPaintUnselected = new Paint(Paint.ANTI_ALIAS_FLAG);
+    private final Paint mPaintSelected = new Paint(Paint.ANTI_ALIAS_FLAG);
+    private ViewPager mViewPager;
+    private ViewPager.OnPageChangeListener mListener;
+    private int mCurrentPage;
+    private boolean mCentered;
+    private float mLineWidth;
+    private float mGapWidth;
+
+    private int mTouchSlop;
+    private float mLastMotionX = -1;
+    private int mActivePointerId = INVALID_POINTER;
+    private boolean mIsDragging;
+
+
+    public LinePageIndicator(Context context) {
+        this(context, null);
+    }
+
+    public LinePageIndicator(Context context, AttributeSet attrs) {
+        this(context, attrs, R.attr.vpiLinePageIndicatorStyle);
+    }
+
+    public LinePageIndicator(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        if (isInEditMode()) return;
+
+        final Resources res = getResources();
+
+        //Load defaults from resources
+        final int defaultSelectedColor = res.getColor(R.color.default_line_indicator_selected_color);
+        final int defaultUnselectedColor = res.getColor(R.color.default_line_indicator_unselected_color);
+        final float defaultLineWidth = res.getDimension(R.dimen.default_line_indicator_line_width);
+        final float defaultGapWidth = res.getDimension(R.dimen.default_line_indicator_gap_width);
+        final float defaultStrokeWidth = res.getDimension(R.dimen.default_line_indicator_stroke_width);
+        final boolean defaultCentered = res.getBoolean(R.bool.default_line_indicator_centered);
+
+        //Retrieve styles attributes
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.LinePageIndicator, defStyle, 0);
+
+        mCentered = a.getBoolean(R.styleable.LinePageIndicator_centered, defaultCentered);
+        mLineWidth = a.getDimension(R.styleable.LinePageIndicator_lineWidth, defaultLineWidth);
+        mGapWidth = a.getDimension(R.styleable.LinePageIndicator_gapWidth, defaultGapWidth);
+        setStrokeWidth(a.getDimension(R.styleable.LinePageIndicator_strokeWidth, defaultStrokeWidth));
+        mPaintUnselected.setColor(a.getColor(R.styleable.LinePageIndicator_unselectedColor, defaultUnselectedColor));
+        mPaintSelected.setColor(a.getColor(R.styleable.LinePageIndicator_selectedColor, defaultSelectedColor));
+
+        a.recycle();
+
+        final ViewConfiguration configuration = ViewConfiguration.get(context);
+        mTouchSlop = ViewConfigurationCompat.getScaledPagingTouchSlop(configuration);
+    }
+
+
+    public void setCentered(boolean centered) {
+        mCentered = centered;
+        invalidate();
+    }
+
+    public boolean isCentered() {
+        return mCentered;
+    }
+
+    public void setUnselectedColor(int unselectedColor) {
+        mPaintUnselected.setColor(unselectedColor);
+        invalidate();
+    }
+
+    public int getUnselectedColor() {
+        return mPaintUnselected.getColor();
+    }
+
+    public void setSelectedColor(int selectedColor) {
+        mPaintSelected.setColor(selectedColor);
+        invalidate();
+    }
+
+    public int getSelectedColor() {
+        return mPaintSelected.getColor();
+    }
+
+    public void setLineWidth(float lineWidth) {
+        mLineWidth = lineWidth;
+        invalidate();
+    }
+
+    public float getLineWidth() {
+        return mLineWidth;
+    }
+
+    public void setStrokeWidth(float lineHeight) {
+        mPaintSelected.setStrokeWidth(lineHeight);
+        mPaintUnselected.setStrokeWidth(lineHeight);
+        invalidate();
+    }
+
+    public float getStrokeWidth() {
+        return mPaintSelected.getStrokeWidth();
+    }
+
+    public void setGapWidth(float gapWidth) {
+        mGapWidth = gapWidth;
+        invalidate();
+    }
+
+    public float getGapWidth() {
+        return mGapWidth;
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        super.onDraw(canvas);
+
+        if (mViewPager == null) {
+            return;
+        }
+        final int count = mViewPager.getAdapter().getCount();
+        if (count == 0) {
+            return;
+        }
+
+        if (mCurrentPage >= count) {
+            setCurrentItem(count - 1);
+            return;
+        }
+
+        final float lineWidthAndGap = mLineWidth + mGapWidth;
+        final float indicatorWidth = (count * lineWidthAndGap) - mGapWidth;
+        final float paddingTop = getPaddingTop();
+        final float paddingLeft = getPaddingLeft();
+        final float paddingRight = getPaddingRight();
+
+        float verticalOffset = paddingTop + ((getHeight() - paddingTop - getPaddingBottom()) / 2.0f);
+        float horizontalOffset = paddingLeft;
+        if (mCentered) {
+            horizontalOffset += ((getWidth() - paddingLeft - paddingRight) / 2.0f) - (indicatorWidth / 2.0f);
+        }
+
+        //Draw stroked circles
+        for (int i = 0; i < count; i++) {
+            float dx1 = horizontalOffset + (i * lineWidthAndGap);
+            float dx2 = dx1 + mLineWidth;
+            canvas.drawLine(dx1, verticalOffset, dx2, verticalOffset, (i == mCurrentPage) ? mPaintSelected : mPaintUnselected);
+        }
+    }
+
+    public boolean onTouchEvent(android.view.MotionEvent ev) {
+        if (super.onTouchEvent(ev)) {
+            return true;
+        }
+        if ((mViewPager == null) || (mViewPager.getAdapter().getCount() == 0)) {
+            return false;
+        }
+
+        final int action = ev.getAction();
+
+        switch (action & MotionEventCompat.ACTION_MASK) {
+            case MotionEvent.ACTION_DOWN:
+                mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
+                mLastMotionX = ev.getX();
+                break;
+
+            case MotionEvent.ACTION_MOVE: {
+                final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
+                final float x = MotionEventCompat.getX(ev, activePointerIndex);
+                final float deltaX = x - mLastMotionX;
+
+                if (!mIsDragging) {
+                    if (Math.abs(deltaX) > mTouchSlop) {
+                        mIsDragging = true;
+                    }
+                }
+
+                if (mIsDragging) {
+                    mLastMotionX = x;
+                    if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
+                        mViewPager.fakeDragBy(deltaX);
+                    }
+                }
+
+                break;
+            }
+
+            case MotionEvent.ACTION_CANCEL:
+            case MotionEvent.ACTION_UP:
+                if (!mIsDragging) {
+                    final int count = mViewPager.getAdapter().getCount();
+                    final int width = getWidth();
+                    final float halfWidth = width / 2f;
+                    final float sixthWidth = width / 6f;
+
+                    if ((mCurrentPage > 0) && (ev.getX() < halfWidth - sixthWidth)) {
+                        mViewPager.setCurrentItem(mCurrentPage - 1);
+                        return true;
+                    } else if ((mCurrentPage < count - 1) && (ev.getX() > halfWidth + sixthWidth)) {
+                        mViewPager.setCurrentItem(mCurrentPage + 1);
+                        return true;
+                    }
+                }
+
+                mIsDragging = false;
+                mActivePointerId = INVALID_POINTER;
+                if (mViewPager.isFakeDragging()) mViewPager.endFakeDrag();
+                break;
+
+            case MotionEventCompat.ACTION_POINTER_DOWN: {
+                final int index = MotionEventCompat.getActionIndex(ev);
+                final float x = MotionEventCompat.getX(ev, index);
+                mLastMotionX = x;
+                mActivePointerId = MotionEventCompat.getPointerId(ev, index);
+                break;
+            }
+
+            case MotionEventCompat.ACTION_POINTER_UP:
+                final int pointerIndex = MotionEventCompat.getActionIndex(ev);
+                final int pointerId = MotionEventCompat.getPointerId(ev, pointerIndex);
+                if (pointerId == mActivePointerId) {
+                    final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
+                    mActivePointerId = MotionEventCompat.getPointerId(ev, newPointerIndex);
+                }
+                mLastMotionX = MotionEventCompat.getX(ev, MotionEventCompat.findPointerIndex(ev, mActivePointerId));
+                break;
+        }
+
+        return true;
+    };
+
+    @Override
+    public void setViewPager(ViewPager viewPager) {
+        if (mViewPager == viewPager) {
+            return;
+        }
+        if (mViewPager != null) {
+            //Clear us from the old pager.
+            mViewPager.setOnPageChangeListener(null);
+        }
+        if (viewPager.getAdapter() == null) {
+            throw new IllegalStateException("ViewPager does not have adapter instance.");
+        }
+        mViewPager = viewPager;
+        mViewPager.setOnPageChangeListener(this);
+        invalidate();
+    }
+
+    @Override
+    public void setViewPager(ViewPager view, int initialPosition) {
+        setViewPager(view);
+        setCurrentItem(initialPosition);
+    }
+
+    @Override
+    public void setCurrentItem(int item) {
+        if (mViewPager == null) {
+            throw new IllegalStateException("ViewPager has not been bound.");
+        }
+        mViewPager.setCurrentItem(item);
+        mCurrentPage = item;
+        invalidate();
+    }
+
+    @Override
+    public void notifyDataSetChanged() {
+        invalidate();
+    }
+
+    @Override
+    public void onPageScrollStateChanged(int state) {
+        if (mListener != null) {
+            mListener.onPageScrollStateChanged(state);
+        }
+    }
+
+    @Override
+    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
+        if (mListener != null) {
+            mListener.onPageScrolled(position, positionOffset, positionOffsetPixels);
+        }
+    }
+
+    @Override
+    public void onPageSelected(int position) {
+        mCurrentPage = position;
+        invalidate();
+
+        if (mListener != null) {
+            mListener.onPageSelected(position);
+        }
+    }
+
+    @Override
+    public void setOnPageChangeListener(ViewPager.OnPageChangeListener listener) {
+        mListener = listener;
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        setMeasuredDimension(measureWidth(widthMeasureSpec), measureHeight(heightMeasureSpec));
+    }
+
+    /**
+     * Determines the width of this view
+     *
+     * @param measureSpec
+     *            A measureSpec packed into an int
+     * @return The width of the view, honoring constraints from measureSpec
+     */
+    private int measureWidth(int measureSpec) {
+        float result = 0;
+        int specMode = MeasureSpec.getMode(measureSpec);
+        int specSize = MeasureSpec.getSize(measureSpec);
+
+        if ((specMode == MeasureSpec.EXACTLY) || (mViewPager == null)) {
+            //We were told how big to be
+            result = specSize;
+        } else {
+            //Calculate the width according the views count
+            final int count = mViewPager.getAdapter().getCount();
+            result = getPaddingLeft() + getPaddingRight() + (count * mLineWidth) + ((count - 1) * mGapWidth);
+            //Respect AT_MOST value if that was what is called for by measureSpec
+            if (specMode == MeasureSpec.AT_MOST) {
+                result = Math.min(result, specSize);
+            }
+        }
+        return (int)FloatMath.ceil(result);
+    }
+
+    /**
+     * Determines the height of this view
+     *
+     * @param measureSpec
+     *            A measureSpec packed into an int
+     * @return The height of the view, honoring constraints from measureSpec
+     */
+    private int measureHeight(int measureSpec) {
+        float result = 0;
+        int specMode = MeasureSpec.getMode(measureSpec);
+        int specSize = MeasureSpec.getSize(measureSpec);
+
+        if (specMode == MeasureSpec.EXACTLY) {
+            //We were told how big to be
+            result = specSize;
+        } else {
+            //Measure the height
+            result = mPaintSelected.getStrokeWidth() + getPaddingTop() + getPaddingBottom();
+            //Respect AT_MOST value if that was what is called for by measureSpec
+            if (specMode == MeasureSpec.AT_MOST) {
+                result = Math.min(result, specSize);
+            }
+        }
+        return (int)FloatMath.ceil(result);
+    }
+
+    @Override
+    public void onRestoreInstanceState(Parcelable state) {
+        SavedState savedState = (SavedState)state;
+        super.onRestoreInstanceState(savedState.getSuperState());
+        mCurrentPage = savedState.currentPage;
+        requestLayout();
+    }
+
+    @Override
+    public Parcelable onSaveInstanceState() {
+        Parcelable superState = super.onSaveInstanceState();
+        SavedState savedState = new SavedState(superState);
+        savedState.currentPage = mCurrentPage;
+        return savedState;
+    }
+
+    static class SavedState extends BaseSavedState {
+        int currentPage;
+
+        public SavedState(Parcelable superState) {
+            super(superState);
+        }
+
+        private SavedState(Parcel in) {
+            super(in);
+            currentPage = in.readInt();
+        }
+
+        @Override
+        public void writeToParcel(Parcel dest, int flags) {
+            super.writeToParcel(dest, flags);
+            dest.writeInt(currentPage);
+        }
+
+        public static final Parcelable.Creator<SavedState> CREATOR = new Parcelable.Creator<SavedState>() {
+            @Override
+            public SavedState createFromParcel(Parcel in) {
+                return new SavedState(in);
+            }
+
+            @Override
+            public SavedState[] newArray(int size) {
+                return new SavedState[size];
+            }
+        };
+    }
+}
\ No newline at end of file
diff --git a/libs/ViewPagerIndicator/src/com/viewpagerindicator/PageIndicator.java b/libs/ViewPagerIndicator/src/com/viewpagerindicator/PageIndicator.java
index 26414d8..c08c00a 100644
--- a/libs/ViewPagerIndicator/src/com/viewpagerindicator/PageIndicator.java
+++ b/libs/ViewPagerIndicator/src/com/viewpagerindicator/PageIndicator.java
@@ -29,7 +29,7 @@ public interface PageIndicator extends ViewPager.OnPageChangeListener {
      *
      * @param view
      */
-    public void setViewPager(ViewPager view);
+    void setViewPager(ViewPager view);
 
     /**
      * Bind the indicator to a ViewPager.
@@ -37,7 +37,7 @@ public interface PageIndicator extends ViewPager.OnPageChangeListener {
      * @param view
      * @param initialPosition
      */
-    public void setViewPager(ViewPager view, int initialPosition);
+    void setViewPager(ViewPager view, int initialPosition);
 
     /**
      * <p>Set the current page of both the ViewPager and indicator.</p>
@@ -47,17 +47,17 @@ public interface PageIndicator extends ViewPager.OnPageChangeListener {
      *
      * @param item
      */
-    public void setCurrentItem(int item);
+    void setCurrentItem(int item);
 
     /**
      * Set a page change listener which will receive forwarded events.
      *
      * @param listener
      */
-    public void setOnPageChangeListener(ViewPager.OnPageChangeListener listener);
+    void setOnPageChangeListener(ViewPager.OnPageChangeListener listener);
 
     /**
      * Notify the indicator that the fragment list has changed.
      */
-    public void notifyDataSetChanged();
+    void notifyDataSetChanged();
 }
diff --git a/libs/ViewPagerIndicator/src/com/viewpagerindicator/TabPageIndicator.java b/libs/ViewPagerIndicator/src/com/viewpagerindicator/TabPageIndicator.java
index 9fba053..e6f4ea7 100644
--- a/libs/ViewPagerIndicator/src/com/viewpagerindicator/TabPageIndicator.java
+++ b/libs/ViewPagerIndicator/src/com/viewpagerindicator/TabPageIndicator.java
@@ -21,36 +21,58 @@ import android.support.v4.view.PagerAdapter;
 import android.support.v4.view.ViewPager;
 import android.support.v4.view.ViewPager.OnPageChangeListener;
 import android.util.AttributeSet;
-import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.HorizontalScrollView;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
+import static android.view.ViewGroup.LayoutParams.FILL_PARENT;
+import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
+
 /**
  * This widget implements the dynamic action bar tab behavior that can change
  * across different configurations or circumstances.
  */
 public class TabPageIndicator extends HorizontalScrollView implements PageIndicator {
-    Runnable mTabSelector;
+    /** Title text used when no title is provided by the adapter. */
+    private static final CharSequence EMPTY_TITLE = "";
 
-    private OnClickListener mTabClickListener = new OnClickListener() {
+    /**
+     * Interface for a callback when the selected tab has been reselected.
+     */
+    public interface OnTabReselectedListener {
+        /**
+         * Callback when the selected tab has been reselected.
+         *
+         * @param position Position of the current center item.
+         */
+        void onTabReselected(int position);
+    }
+
+    private Runnable mTabSelector;
+
+    private final OnClickListener mTabClickListener = new OnClickListener() {
         public void onClick(View view) {
             TabView tabView = (TabView)view;
-            mViewPager.setCurrentItem(tabView.getIndex());
+            final int oldSelected = mViewPager.getCurrentItem();
+            final int newSelected = tabView.getIndex();
+            mViewPager.setCurrentItem(newSelected);
+            if (oldSelected == newSelected && mTabReselectedListener != null) {
+                mTabReselectedListener.onTabReselected(newSelected);
+            }
         }
     };
 
-    private LinearLayout mTabLayout;
+    private final LinearLayout mTabLayout;
     private ViewPager mViewPager;
     private ViewPager.OnPageChangeListener mListener;
 
-    private LayoutInflater mInflater;
-
-    int mMaxTabWidth;
+    private int mMaxTabWidth;
     private int mSelectedTabIndex;
 
+    private OnTabReselectedListener mTabReselectedListener;
+
     public TabPageIndicator(Context context) {
         this(context, null);
     }
@@ -59,10 +81,12 @@ public class TabPageIndicator extends HorizontalScrollView implements PageIndica
         super(context, attrs);
         setHorizontalScrollBarEnabled(false);
 
-        mInflater = LayoutInflater.from(context);
-
         mTabLayout = new LinearLayout(getContext());
-        addView(mTabLayout, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.FILL_PARENT));
+        addView(mTabLayout, new ViewGroup.LayoutParams(WRAP_CONTENT, FILL_PARENT));
+    }
+
+    public void setOnTabReselectedListener(OnTabReselectedListener listener) {
+        mTabReselectedListener = listener;
     }
 
     @Override
@@ -124,14 +148,14 @@ public class TabPageIndicator extends HorizontalScrollView implements PageIndica
         }
     }
 
-    private void addTab(String text, int index) {
-        //Workaround for not being able to pass a defStyle on pre-3.0
-        final TabView tabView = (TabView)mInflater.inflate(R.layout.vpi__tab, null);
-        tabView.init(this, text, index);
+    private void addTab(CharSequence text, int index) {
+        final TabView tabView = new TabView(getContext());
+        tabView.mIndex = index;
         tabView.setFocusable(true);
         tabView.setOnClickListener(mTabClickListener);
+        tabView.setText(text);
 
-        mTabLayout.addView(tabView, new LinearLayout.LayoutParams(0, LayoutParams.FILL_PARENT, 1));
+        mTabLayout.addView(tabView, new LinearLayout.LayoutParams(0, FILL_PARENT, 1));
     }
 
     @Override
@@ -158,13 +182,16 @@ public class TabPageIndicator extends HorizontalScrollView implements PageIndica
 
     @Override
     public void setViewPager(ViewPager view) {
+        if (mViewPager == view) {
+            return;
+        }
+        if (mViewPager != null) {
+            mViewPager.setOnPageChangeListener(null);
+        }
         final PagerAdapter adapter = view.getAdapter();
         if (adapter == null) {
             throw new IllegalStateException("ViewPager does not have adapter instance.");
         }
-        if (!(adapter instanceof TitleProvider)) {
-            throw new IllegalStateException("ViewPager adapter must implement TitleProvider to be used with TitlePageIndicator.");
-        }
         mViewPager = view;
         view.setOnPageChangeListener(this);
         notifyDataSetChanged();
@@ -172,10 +199,14 @@ public class TabPageIndicator extends HorizontalScrollView implements PageIndica
 
     public void notifyDataSetChanged() {
         mTabLayout.removeAllViews();
-        TitleProvider adapter = (TitleProvider)mViewPager.getAdapter();
-        final int count = ((PagerAdapter)adapter).getCount();
+        PagerAdapter adapter = mViewPager.getAdapter();
+        final int count = adapter.getCount();
         for (int i = 0; i < count; i++) {
-            addTab(adapter.getTitle(i), i);
+            CharSequence title = adapter.getPageTitle(i);
+            if (title == null) {
+                title = EMPTY_TITLE;
+            }
+            addTab(title, i);
         }
         if (mSelectedTabIndex > count) {
             mSelectedTabIndex = count - 1;
@@ -196,6 +227,8 @@ public class TabPageIndicator extends HorizontalScrollView implements PageIndica
             throw new IllegalStateException("ViewPager has not been bound.");
         }
         mSelectedTabIndex = item;
+        mViewPager.setCurrentItem(item);
+
         final int tabCount = mTabLayout.getChildCount();
         for (int i = 0; i < tabCount; i++) {
             final View child = mTabLayout.getChildAt(i);
@@ -212,20 +245,11 @@ public class TabPageIndicator extends HorizontalScrollView implements PageIndica
         mListener = listener;
     }
 
-    public static class TabView extends LinearLayout {
-        private TabPageIndicator mParent;
+    private class TabView extends TextView {
         private int mIndex;
 
-        public TabView(Context context, AttributeSet attrs) {
-            super(context, attrs);
-        }
-
-        public void init(TabPageIndicator parent, String text, int index) {
-            mParent = parent;
-            mIndex = index;
-
-            TextView textView = (TextView)findViewById(android.R.id.text1);
-            textView.setText(text);
+        public TabView(Context context) {
+            super(context, null, R.attr.vpiTabPageIndicatorStyle);
         }
 
         @Override
@@ -233,8 +257,8 @@ public class TabPageIndicator extends HorizontalScrollView implements PageIndica
             super.onMeasure(widthMeasureSpec, heightMeasureSpec);
 
             // Re-measure if we went beyond our maximum size.
-            if (mParent.mMaxTabWidth > 0 && getMeasuredWidth() > mParent.mMaxTabWidth) {
-                super.onMeasure(MeasureSpec.makeMeasureSpec(mParent.mMaxTabWidth, MeasureSpec.EXACTLY),
+            if (mMaxTabWidth > 0 && getMeasuredWidth() > mMaxTabWidth) {
+                super.onMeasure(MeasureSpec.makeMeasureSpec(mMaxTabWidth, MeasureSpec.EXACTLY),
                         heightMeasureSpec);
             }
         }
diff --git a/libs/ViewPagerIndicator/src/com/viewpagerindicator/TitlePageIndicator.java b/libs/ViewPagerIndicator/src/com/viewpagerindicator/TitlePageIndicator.java
index e71233c..d02777f 100644
--- a/libs/ViewPagerIndicator/src/com/viewpagerindicator/TitlePageIndicator.java
+++ b/libs/ViewPagerIndicator/src/com/viewpagerindicator/TitlePageIndicator.java
@@ -24,7 +24,7 @@ import android.content.res.TypedArray;
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.Path;
-import android.graphics.RectF;
+import android.graphics.Rect;
 import android.graphics.Typeface;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -58,16 +58,21 @@ public class TitlePageIndicator extends View implements PageIndicator {
      */
     private static final float BOLD_FADE_PERCENTAGE = 0.05f;
 
+    /**
+     * Title text used when no title is provided by the adapter.
+     */
+    private static final String EMPTY_TITLE = "";
+
     /**
      * Interface for a callback when the center item has been clicked.
      */
-    public static interface OnCenterItemClickListener {
+    public interface OnCenterItemClickListener {
         /**
          * Callback when the center item has been clicked.
          *
          * @param position Position of the current center item.
          */
-        public void onCenterItemClick(int position);
+        void onCenterItemClick(int position);
     }
 
     public enum IndicatorStyle {
@@ -91,15 +96,16 @@ public class TitlePageIndicator extends View implements PageIndicator {
 
     private ViewPager mViewPager;
     private ViewPager.OnPageChangeListener mListener;
-    private TitleProvider mTitleProvider;
-    private int mCurrentPage;
-    private int mCurrentOffset;
+    private PagerAdapter mPagerAdapter;
+    private int mCurrentPage = -1;
+    private float mPageOffset;
     private int mScrollState;
     private final Paint mPaintText = new Paint();
     private boolean mBoldText;
     private int mColorText;
     private int mColorSelected;
-    private Path mPath;
+    private Path mPath = new Path();
+    private final Rect mBounds = new Rect();
     private final Paint mPaintFooterLine = new Paint();
     private IndicatorStyle mFooterIndicatorStyle;
     private final Paint mPaintFooterIndicator = new Paint();
@@ -132,6 +138,7 @@ public class TitlePageIndicator extends View implements PageIndicator {
 
     public TitlePageIndicator(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);
+        if (isInEditMode()) return;
 
         //Load defaults from resources
         final Resources res = getResources();
@@ -150,7 +157,7 @@ public class TitlePageIndicator extends View implements PageIndicator {
         final float defaultTopPadding = res.getDimension(R.dimen.default_title_indicator_top_padding);
 
         //Retrieve styles attributes
-        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.TitlePageIndicator, defStyle, R.style.Widget_TitlePageIndicator);
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.TitlePageIndicator, defStyle, 0);
 
         //Retrieve the colors to be used for this view and apply them.
         mFooterLineHeight = a.getDimension(R.styleable.TitlePageIndicator_footerLineHeight, defaultFooterLineHeight);
@@ -162,10 +169,10 @@ public class TitlePageIndicator extends View implements PageIndicator {
         mTitlePadding = a.getDimension(R.styleable.TitlePageIndicator_titlePadding, defaultTitlePadding);
         mClipPadding = a.getDimension(R.styleable.TitlePageIndicator_clipPadding, defaultClipPadding);
         mColorSelected = a.getColor(R.styleable.TitlePageIndicator_selectedColor, defaultSelectedColor);
-        mColorText = a.getColor(R.styleable.TitlePageIndicator_textColor, defaultTextColor);
+        mColorText = a.getColor(R.styleable.TitlePageIndicator_android_textColor, defaultTextColor);
         mBoldText = a.getBoolean(R.styleable.TitlePageIndicator_selectedBold, defaultSelectedBold);
 
-        final float textSize = a.getDimension(R.styleable.TitlePageIndicator_textSize, defaultTextSize);
+        final float textSize = a.getDimension(R.styleable.TitlePageIndicator_android_textSize, defaultTextSize);
         final int footerColor = a.getColor(R.styleable.TitlePageIndicator_footerColor, defaultFooterColor);
         mPaintText.setTextSize(textSize);
         mPaintText.setAntiAlias(true);
@@ -319,8 +326,11 @@ public class TitlePageIndicator extends View implements PageIndicator {
             return;
         }
 
+        // mCurrentPage is -1 on first start and after orientation changed. If so, retrieve the correct index from viewpager.
+        if(mCurrentPage == -1 && mViewPager != null) mCurrentPage = mViewPager.getCurrentItem();
+
         //Calculate views bounds
-        ArrayList<RectF> bounds = calculateAllBounds(mPaintText);
+        ArrayList<Rect> bounds = calculateAllBounds(mPaintText);
         final int boundsSize = bounds.size();
 
         //Make sure we're on a page that still exists
@@ -340,18 +350,18 @@ public class TitlePageIndicator extends View implements PageIndicator {
 
         int page = mCurrentPage;
         float offsetPercent;
-        if (mCurrentOffset <= halfWidth) {
-            offsetPercent = 1.0f * mCurrentOffset / width;
+        if (mPageOffset <= 0.5) {
+            offsetPercent = mPageOffset;
         } else {
             page += 1;
-            offsetPercent = 1.0f * (width - mCurrentOffset) / width;
+            offsetPercent = 1 - mPageOffset;
         }
         final boolean currentSelected = (offsetPercent <= SELECTION_FADE_PERCENTAGE);
         final boolean currentBold = (offsetPercent <= BOLD_FADE_PERCENTAGE);
         final float selectedPercent = (SELECTION_FADE_PERCENTAGE - offsetPercent) / SELECTION_FADE_PERCENTAGE;
 
         //Verify if the current view must be clipped to the screen
-        RectF curPageBound = bounds.get(mCurrentPage);
+        Rect curPageBound = bounds.get(mCurrentPage);
         float curPageWidth = curPageBound.right - curPageBound.left;
         if (curPageBound.left < leftClip) {
             //Try to clip to the screen (left side)
@@ -365,17 +375,17 @@ public class TitlePageIndicator extends View implements PageIndicator {
         //Left views starting from the current position
         if (mCurrentPage > 0) {
             for (int i = mCurrentPage - 1; i >= 0; i--) {
-                RectF bound = bounds.get(i);
+                Rect bound = bounds.get(i);
                 //Is left side is outside the screen
                 if (bound.left < leftClip) {
-                    float w = bound.right - bound.left;
+                    int w = bound.right - bound.left;
                     //Try to clip to the screen (left side)
                     clipViewOnTheLeft(bound, w, left);
                     //Except if there's an intersection with the right view
-                    RectF rightBound = bounds.get(i + 1);
+                    Rect rightBound = bounds.get(i + 1);
                     //Intersection
                     if (bound.right + mTitlePadding > rightBound.left) {
-                        bound.left = rightBound.left - w - mTitlePadding;
+                        bound.left = (int) (rightBound.left - w - mTitlePadding);
                         bound.right = bound.left + w;
                     }
                 }
@@ -384,17 +394,17 @@ public class TitlePageIndicator extends View implements PageIndicator {
         //Right views starting from the current position
         if (mCurrentPage < countMinusOne) {
             for (int i = mCurrentPage + 1 ; i < count; i++) {
-                RectF bound = bounds.get(i);
+                Rect bound = bounds.get(i);
                 //If right side is outside the screen
                 if (bound.right > rightClip) {
-                    float w = bound.right - bound.left;
+                    int w = bound.right - bound.left;
                     //Try to clip to the screen (right side)
                     clipViewOnTheRight(bound, w, right);
                     //Except if there's an intersection with the left view
-                    RectF leftBound = bounds.get(i - 1);
+                    Rect leftBound = bounds.get(i - 1);
                     //Intersection
                     if (bound.left - mTitlePadding < leftBound.right) {
-                        bound.left = leftBound.right + mTitlePadding;
+                        bound.left = (int) (leftBound.right + mTitlePadding);
                         bound.right = bound.left + w;
                     }
                 }
@@ -405,10 +415,12 @@ public class TitlePageIndicator extends View implements PageIndicator {
         int colorTextAlpha = mColorText >>> 24;
         for (int i = 0; i < count; i++) {
             //Get the title
-            RectF bound = bounds.get(i);
+            Rect bound = bounds.get(i);
             //Only if one side is visible
             if ((bound.left > left && bound.left < right) || (bound.right > left && bound.right < right)) {
                 final boolean currentPage = (i == page);
+                final CharSequence pageTitle = getTitle(i);
+
                 //Only set bold if we are within bounds
                 mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText);
 
@@ -418,19 +430,19 @@ public class TitlePageIndicator extends View implements PageIndicator {
                     //Fade out/in unselected text as the selected text fades in/out
                     mPaintText.setAlpha(colorTextAlpha - (int)(colorTextAlpha * selectedPercent));
                 }
-                canvas.drawText(mTitleProvider.getTitle(i), bound.left, bound.bottom + mTopPadding, mPaintText);
+                canvas.drawText(pageTitle, 0, pageTitle.length(), bound.left, bound.bottom + mTopPadding, mPaintText);
 
                 //If we are within the selected bounds draw the selected text
                 if (currentPage && currentSelected) {
                     mPaintText.setColor(mColorSelected);
                     mPaintText.setAlpha((int)((mColorSelected >>> 24) * selectedPercent));
-                    canvas.drawText(mTitleProvider.getTitle(i), bound.left, bound.bottom + mTopPadding, mPaintText);
+                    canvas.drawText(pageTitle, 0, pageTitle.length(), bound.left, bound.bottom + mTopPadding, mPaintText);
                 }
             }
         }
 
         //Draw the footer line
-        mPath = new Path();
+        mPath.reset();
         mPath.moveTo(0, height - mFooterLineHeight / 2f);
         mPath.lineTo(width, height - mFooterLineHeight / 2f);
         mPath.close();
@@ -438,7 +450,7 @@ public class TitlePageIndicator extends View implements PageIndicator {
 
         switch (mFooterIndicatorStyle) {
             case Triangle:
-                mPath = new Path();
+                mPath.reset();
                 mPath.moveTo(halfWidth, height - mFooterLineHeight - mFooterIndicatorHeight);
                 mPath.lineTo(halfWidth + mFooterIndicatorHeight, height - mFooterLineHeight);
                 mPath.lineTo(halfWidth - mFooterIndicatorHeight, height - mFooterLineHeight);
@@ -451,8 +463,8 @@ public class TitlePageIndicator extends View implements PageIndicator {
                     break;
                 }
 
-                RectF underlineBounds = bounds.get(page);
-                mPath = new Path();
+                Rect underlineBounds = bounds.get(page);
+                mPath.reset();
                 mPath.moveTo(underlineBounds.left  - mFooterIndicatorUnderlinePadding, height - mFooterLineHeight);
                 mPath.lineTo(underlineBounds.right + mFooterIndicatorUnderlinePadding, height - mFooterLineHeight);
                 mPath.lineTo(underlineBounds.right + mFooterIndicatorUnderlinePadding, height - mFooterLineHeight - mFooterIndicatorHeight);
@@ -494,13 +506,10 @@ public class TitlePageIndicator extends View implements PageIndicator {
                 }
 
                 if (mIsDragging) {
-                    if (!mViewPager.isFakeDragging()) {
-                        mViewPager.beginFakeDrag();
-                    }
-
                     mLastMotionX = x;
-
-                    mViewPager.fakeDragBy(deltaX);
+                    if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
+                        mViewPager.fakeDragBy(deltaX);
+                    }
                 }
 
                 break;
@@ -570,9 +579,9 @@ public class TitlePageIndicator extends View implements PageIndicator {
      * @param curViewWidth
      *            width of the view.
      */
-    private void clipViewOnTheRight(RectF curViewBound, float curViewWidth, int right) {
-        curViewBound.right = right - mClipPadding;
-        curViewBound.left = curViewBound.right - curViewWidth;
+    private void clipViewOnTheRight(Rect curViewBound, float curViewWidth, int right) {
+        curViewBound.right = (int) (right - mClipPadding);
+        curViewBound.left = (int) (curViewBound.right - curViewWidth);
     }
 
     /**
@@ -583,29 +592,28 @@ public class TitlePageIndicator extends View implements PageIndicator {
      * @param curViewWidth
      *            width of the view.
      */
-    private void clipViewOnTheLeft(RectF curViewBound, float curViewWidth, int left) {
-        curViewBound.left = left + mClipPadding;
-        curViewBound.right = mClipPadding + curViewWidth;
+    private void clipViewOnTheLeft(Rect curViewBound, float curViewWidth, int left) {
+        curViewBound.left = (int) (left + mClipPadding);
+        curViewBound.right = (int) (mClipPadding + curViewWidth);
     }
 
     /**
      * Calculate views bounds and scroll them according to the current index
      *
      * @param paint
-     * @param currentIndex
      * @return
      */
-    private ArrayList<RectF> calculateAllBounds(Paint paint) {
-        ArrayList<RectF> list = new ArrayList<RectF>();
+    private ArrayList<Rect> calculateAllBounds(Paint paint) {
+        ArrayList<Rect> list = new ArrayList<Rect>();
         //For each views (If no values then add a fake one)
         final int count = mViewPager.getAdapter().getCount();
         final int width = getWidth();
         final int halfWidth = width / 2;
         for (int i = 0; i < count; i++) {
-            RectF bounds = calcBounds(i, paint);
-            float w = (bounds.right - bounds.left);
-            float h = (bounds.bottom - bounds.top);
-            bounds.left = (halfWidth) - (w / 2) - mCurrentOffset + ((i - mCurrentPage) * width);
+            Rect bounds = calcBounds(i, paint);
+            int w = bounds.right - bounds.left;
+            int h = bounds.bottom - bounds.top;
+            bounds.left = (int)(halfWidth - (w / 2f) + ((i - mCurrentPage - mPageOffset) * width));
             bounds.right = bounds.left + w;
             bounds.top = 0;
             bounds.bottom = h;
@@ -622,26 +630,29 @@ public class TitlePageIndicator extends View implements PageIndicator {
      * @param paint
      * @return
      */
-    private RectF calcBounds(int index, Paint paint) {
+    private Rect calcBounds(int index, Paint paint) {
         //Calculate the text bounds
-        RectF bounds = new RectF();
-        bounds.right = paint.measureText(mTitleProvider.getTitle(index));
-        bounds.bottom = paint.descent() - paint.ascent();
+        Rect bounds = new Rect();
+        CharSequence title = getTitle(index);
+        bounds.right = (int) paint.measureText(title, 0, title.length());
+        bounds.bottom = (int) (paint.descent() - paint.ascent());
         return bounds;
     }
 
     @Override
     public void setViewPager(ViewPager view) {
-        final PagerAdapter adapter = view.getAdapter();
-        if (adapter == null) {
-            throw new IllegalStateException("ViewPager does not have adapter instance.");
+        if (mViewPager == view) {
+            return;
         }
-        if (!(adapter instanceof TitleProvider)) {
-            throw new IllegalStateException("ViewPager adapter must implement TitleProvider to be used with TitlePageIndicator.");
+        if (mViewPager != null) {
+            mViewPager.setOnPageChangeListener(null);
+        }
+        mPagerAdapter = view.getAdapter();
+        if (mPagerAdapter == null) {
+            throw new IllegalStateException("ViewPager does not have adapter instance.");
         }
         mViewPager = view;
         mViewPager.setOnPageChangeListener(this);
-        mTitleProvider = (TitleProvider)adapter;
         invalidate();
     }
 
@@ -687,7 +698,7 @@ public class TitlePageIndicator extends View implements PageIndicator {
     @Override
     public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
         mCurrentPage = position;
-        mCurrentOffset = positionOffsetPixels;
+        mPageOffset = positionOffset;
         invalidate();
 
         if (mListener != null) {
@@ -725,9 +736,9 @@ public class TitlePageIndicator extends View implements PageIndicator {
             height = MeasureSpec.getSize(heightMeasureSpec);
         } else {
             //Calculate the text bounds
-            RectF bounds = new RectF();
-            bounds.bottom = mPaintText.descent()-mPaintText.ascent();
-            height = bounds.bottom - bounds.top + mFooterLineHeight + mFooterPadding + mTopPadding;
+            mBounds.setEmpty();
+            mBounds.bottom = (int) (mPaintText.descent() - mPaintText.ascent());
+            height = mBounds.bottom - mBounds.top + mFooterLineHeight + mFooterPadding + mTopPadding;
             if (mFooterIndicatorStyle != IndicatorStyle.None) {
                 height += mFooterIndicatorHeight;
             }
@@ -783,4 +794,12 @@ public class TitlePageIndicator extends View implements PageIndicator {
             }
         };
     }
+
+    private CharSequence getTitle(int i) {
+        CharSequence title = mPagerAdapter.getPageTitle(i);
+        if (title == null) {
+            title = EMPTY_TITLE;
+        }
+        return title.toString();
+    }
 }
diff --git a/libs/ViewPagerIndicator/src/com/viewpagerindicator/TitleProvider.java b/libs/ViewPagerIndicator/src/com/viewpagerindicator/TitleProvider.java
deleted file mode 100644
index 2a04b65..0000000
--- a/libs/ViewPagerIndicator/src/com/viewpagerindicator/TitleProvider.java
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (C) 2011 Patrik Akerfeldt
- *
- * 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.
- */
-package com.viewpagerindicator;
-
-/**
- * A TitleProvider provides the title to display according to a view.
- */
-public interface TitleProvider {
-    /**
-     * Returns the title of the view at position
-     * @param position
-     * @return
-     */
-    public String getTitle(int position);
-}
diff --git a/libs/ViewPagerIndicator/src/com/viewpagerindicator/UnderlinePageIndicator.java b/libs/ViewPagerIndicator/src/com/viewpagerindicator/UnderlinePageIndicator.java
new file mode 100644
index 0000000..a1a2d9f
--- /dev/null
+++ b/libs/ViewPagerIndicator/src/com/viewpagerindicator/UnderlinePageIndicator.java
@@ -0,0 +1,391 @@
+/*
+ * Copyright (C) 2012 Jake Wharton
+ *
+ * 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.
+ */
+package com.viewpagerindicator;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.support.v4.view.MotionEventCompat;
+import android.support.v4.view.ViewConfigurationCompat;
+import android.support.v4.view.ViewPager;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewConfiguration;
+
+/**
+ * Draws a line for each page. The current page line is colored differently
+ * than the unselected page lines.
+ */
+public class UnderlinePageIndicator extends View implements PageIndicator {
+    private static final int INVALID_POINTER = -1;
+    private static final int FADE_FRAME_MS = 30;
+
+    private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
+
+    private boolean mFades;
+    private int mFadeDelay;
+    private int mFadeLength;
+    private int mFadeBy;
+
+    private ViewPager mViewPager;
+    private ViewPager.OnPageChangeListener mListener;
+    private int mScrollState;
+    private int mCurrentPage;
+    private float mPositionOffset;
+
+    private int mTouchSlop;
+    private float mLastMotionX = -1;
+    private int mActivePointerId = INVALID_POINTER;
+    private boolean mIsDragging;
+
+    private final Runnable mFadeRunnable = new Runnable() {
+      @Override public void run() {
+        final int alpha = Math.max(mPaint.getAlpha() - mFadeBy, 0);
+        mPaint.setAlpha(alpha);
+        invalidate();
+        if (alpha > 0) {
+          postDelayed(this, FADE_FRAME_MS);
+        }
+      }
+    };
+
+    public UnderlinePageIndicator(Context context) {
+        this(context, null);
+    }
+
+    public UnderlinePageIndicator(Context context, AttributeSet attrs) {
+        this(context, attrs, R.attr.vpiUnderlinePageIndicatorStyle);
+    }
+
+    public UnderlinePageIndicator(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        if (isInEditMode()) return;
+
+        final Resources res = getResources();
+
+        //Load defaults from resources
+        final boolean defaultFades = res.getBoolean(R.bool.default_underline_indicator_fades);
+        final int defaultFadeDelay = res.getInteger(R.integer.default_underline_indicator_fade_delay);
+        final int defaultFadeLength = res.getInteger(R.integer.default_underline_indicator_fade_length);
+        final int defaultSelectedColor = res.getColor(R.color.default_underline_indicator_selected_color);
+
+        //Retrieve styles attributes
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.UnderlinePageIndicator, defStyle, 0);
+
+        setFades(a.getBoolean(R.styleable.UnderlinePageIndicator_fades, defaultFades));
+        setSelectedColor(a.getColor(R.styleable.UnderlinePageIndicator_selectedColor, defaultSelectedColor));
+        setFadeDelay(a.getInteger(R.styleable.UnderlinePageIndicator_fadeDelay, defaultFadeDelay));
+        setFadeLength(a.getInteger(R.styleable.UnderlinePageIndicator_fadeLength, defaultFadeLength));
+
+        a.recycle();
+
+        final ViewConfiguration configuration = ViewConfiguration.get(context);
+        mTouchSlop = ViewConfigurationCompat.getScaledPagingTouchSlop(configuration);
+    }
+
+    public boolean getFades() {
+        return mFades;
+    }
+
+    public void setFades(boolean fades) {
+        if (fades != mFades) {
+            mFades = fades;
+            if (fades) {
+                post(mFadeRunnable);
+            } else {
+                removeCallbacks(mFadeRunnable);
+                mPaint.setAlpha(0xFF);
+                invalidate();
+            }
+        }
+    }
+
+    public int getFadeDelay() {
+        return mFadeDelay;
+    }
+
+    public void setFadeDelay(int fadeDelay) {
+        mFadeDelay = fadeDelay;
+    }
+
+    public int getFadeLength() {
+        return mFadeLength;
+    }
+
+    public void setFadeLength(int fadeLength) {
+        mFadeLength = fadeLength;
+        mFadeBy = 0xFF / (mFadeLength / FADE_FRAME_MS);
+    }
+
+    public int getSelectedColor() {
+        return mPaint.getColor();
+    }
+
+    public void setSelectedColor(int selectedColor) {
+        mPaint.setColor(selectedColor);
+        invalidate();
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        super.onDraw(canvas);
+
+        if (mViewPager == null) {
+            return;
+        }
+        final int count = mViewPager.getAdapter().getCount();
+        if (count == 0) {
+            return;
+        }
+
+        if (mCurrentPage >= count) {
+            setCurrentItem(count - 1);
+            return;
+        }
+
+        final int paddingLeft = getPaddingLeft();
+        final float pageWidth = (getWidth() - paddingLeft - getPaddingRight()) / (1f * count);
+        final float left = paddingLeft + pageWidth * (mCurrentPage + mPositionOffset);
+        final float right = left + pageWidth;
+        final float top = getPaddingTop();
+        final float bottom = getHeight() - getPaddingBottom();
+        canvas.drawRect(left, top, right, bottom, mPaint);
+    }
+
+    public boolean onTouchEvent(MotionEvent ev) {
+        if (super.onTouchEvent(ev)) {
+            return true;
+        }
+        if ((mViewPager == null) || (mViewPager.getAdapter().getCount() == 0)) {
+            return false;
+        }
+
+        final int action = ev.getAction();
+
+        switch (action & MotionEventCompat.ACTION_MASK) {
+            case MotionEvent.ACTION_DOWN:
+                mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
+                mLastMotionX = ev.getX();
+                break;
+
+            case MotionEvent.ACTION_MOVE: {
+                final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
+                final float x = MotionEventCompat.getX(ev, activePointerIndex);
+                final float deltaX = x - mLastMotionX;
+
+                if (!mIsDragging) {
+                    if (Math.abs(deltaX) > mTouchSlop) {
+                        mIsDragging = true;
+                    }
+                }
+
+                if (mIsDragging) {
+                    mLastMotionX = x;
+                    if (mViewPager.isFakeDragging() || mViewPager.beginFakeDrag()) {
+                        mViewPager.fakeDragBy(deltaX);
+                    }
+                }
+
+                break;
+            }
+
+            case MotionEvent.ACTION_CANCEL:
+            case MotionEvent.ACTION_UP:
+                if (!mIsDragging) {
+                    final int count = mViewPager.getAdapter().getCount();
+                    final int width = getWidth();
+                    final float halfWidth = width / 2f;
+                    final float sixthWidth = width / 6f;
+
+                    if ((mCurrentPage > 0) && (ev.getX() < halfWidth - sixthWidth)) {
+                        mViewPager.setCurrentItem(mCurrentPage - 1);
+                        return true;
+                    } else if ((mCurrentPage < count - 1) && (ev.getX() > halfWidth + sixthWidth)) {
+                        mViewPager.setCurrentItem(mCurrentPage + 1);
+                        return true;
+                    }
+                }
+
+                mIsDragging = false;
+                mActivePointerId = INVALID_POINTER;
+                if (mViewPager.isFakeDragging()) mViewPager.endFakeDrag();
+                break;
+
+            case MotionEventCompat.ACTION_POINTER_DOWN: {
+                final int index = MotionEventCompat.getActionIndex(ev);
+                final float x = MotionEventCompat.getX(ev, index);
+                mLastMotionX = x;
+                mActivePointerId = MotionEventCompat.getPointerId(ev, index);
+                break;
+            }
+
+            case MotionEventCompat.ACTION_POINTER_UP:
+                final int pointerIndex = MotionEventCompat.getActionIndex(ev);
+                final int pointerId = MotionEventCompat.getPointerId(ev, pointerIndex);
+                if (pointerId == mActivePointerId) {
+                    final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
+                    mActivePointerId = MotionEventCompat.getPointerId(ev, newPointerIndex);
+                }
+                mLastMotionX = MotionEventCompat.getX(ev, MotionEventCompat.findPointerIndex(ev, mActivePointerId));
+                break;
+        }
+
+        return true;
+    };
+
+    @Override
+    public void setViewPager(ViewPager viewPager) {
+        if (mViewPager == viewPager) {
+            return;
+        }
+        if (mViewPager != null) {
+            //Clear us from the old pager.
+            mViewPager.setOnPageChangeListener(null);
+        }
+        if (viewPager.getAdapter() == null) {
+            throw new IllegalStateException("ViewPager does not have adapter instance.");
+        }
+        mViewPager = viewPager;
+        mViewPager.setOnPageChangeListener(this);
+        invalidate();
+        post(new Runnable() {
+            @Override public void run() {
+                if (mFades) {
+                    post(mFadeRunnable);
+                }
+            }
+        });
+    }
+
+    @Override
+    public void setViewPager(ViewPager view, int initialPosition) {
+        setViewPager(view);
+        setCurrentItem(initialPosition);
+    }
+
+    @Override
+    public void setCurrentItem(int item) {
+        if (mViewPager == null) {
+            throw new IllegalStateException("ViewPager has not been bound.");
+        }
+        mViewPager.setCurrentItem(item);
+        mCurrentPage = item;
+        invalidate();
+    }
+
+    @Override
+    public void notifyDataSetChanged() {
+        invalidate();
+    }
+
+    @Override
+    public void onPageScrollStateChanged(int state) {
+        mScrollState = state;
+
+        if (mListener != null) {
+            mListener.onPageScrollStateChanged(state);
+        }
+    }
+
+    @Override
+    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
+        mCurrentPage = position;
+        mPositionOffset = positionOffset;
+        if (mFades) {
+            if (positionOffsetPixels > 0) {
+                removeCallbacks(mFadeRunnable);
+                mPaint.setAlpha(0xFF);
+            } else if (mScrollState != ViewPager.SCROLL_STATE_DRAGGING) {
+                postDelayed(mFadeRunnable, mFadeDelay);
+            }
+        }
+        invalidate();
+
+        if (mListener != null) {
+            mListener.onPageScrolled(position, positionOffset, positionOffsetPixels);
+        }
+    }
+
+    @Override
+    public void onPageSelected(int position) {
+        if (mScrollState == ViewPager.SCROLL_STATE_IDLE) {
+            mCurrentPage = position;
+            mPositionOffset = 0;
+            invalidate();
+            mFadeRunnable.run();
+        }
+        if (mListener != null) {
+            mListener.onPageSelected(position);
+        }
+    }
+
+    @Override
+    public void setOnPageChangeListener(ViewPager.OnPageChangeListener listener) {
+        mListener = listener;
+    }
+
+    @Override
+    public void onRestoreInstanceState(Parcelable state) {
+        SavedState savedState = (SavedState)state;
+        super.onRestoreInstanceState(savedState.getSuperState());
+        mCurrentPage = savedState.currentPage;
+        requestLayout();
+    }
+
+    @Override
+    public Parcelable onSaveInstanceState() {
+        Parcelable superState = super.onSaveInstanceState();
+        SavedState savedState = new SavedState(superState);
+        savedState.currentPage = mCurrentPage;
+        return savedState;
+    }
+
+    static class SavedState extends BaseSavedState {
+        int currentPage;
+
+        public SavedState(Parcelable superState) {
+            super(superState);
+        }
+
+        private SavedState(Parcel in) {
+            super(in);
+            currentPage = in.readInt();
+        }
+
+        @Override
+        public void writeToParcel(Parcel dest, int flags) {
+            super.writeToParcel(dest, flags);
+            dest.writeInt(currentPage);
+        }
+
+        public static final Creator<SavedState> CREATOR = new Creator<SavedState>() {
+            @Override
+            public SavedState createFromParcel(Parcel in) {
+                return new SavedState(in);
+            }
+
+            @Override
+            public SavedState[] newArray(int size) {
+                return new SavedState[size];
+            }
+        };
+    }
+}
\ No newline at end of file