Full Code of gavinliu/Android-ScaleLayout for AI

Repository: gavinliu/Android-ScaleLayout
Branch: master
Commit: a62b7c269ac8
Files: 35
Total size: 53.5 KB

Directory structure:
gitextract_w1ffappy/

├── .gitignore
├── README.md
├── README_zh.md
├── Sample/
│   ├── .gitignore
│   ├── build.gradle
│   ├── proguard-rules.pro
│   └── src/
│       ├── androidTest/
│       │   └── java/
│       │       └── cn/
│       │           └── gavinliu/
│       │               └── android_scalelayout/
│       │                   └── ApplicationTest.java
│       └── main/
│           ├── AndroidManifest.xml
│           ├── java/
│           │   └── cn/
│           │       └── gavinliu/
│           │           └── android_scalelayout/
│           │               ├── DemoActivity.java
│           │               ├── DemoListActivity.java
│           │               ├── MainActivity.java
│           │               └── MainApplication.java
│           └── res/
│               ├── layout/
│               │   ├── activity_demo.xml
│               │   ├── activity_demo_list.xml
│               │   ├── activity_main.xml
│               │   └── item_demo_list.xml
│               ├── menu/
│               │   └── menu_main.xml
│               ├── values/
│               │   ├── dimens.xml
│               │   ├── strings.xml
│               │   └── styles.xml
│               └── values-w820dp/
│                   └── dimens.xml
├── ScaleLayout/
│   ├── .gitignore
│   ├── build.gradle
│   ├── proguard-rules.pro
│   └── src/
│       ├── androidTest/
│       │   └── java/
│       │       └── cn/
│       │           └── gavinliu/
│       │               └── android/
│       │                   └── lib/
│       │                       └── scale/
│       │                           └── ApplicationTest.java
│       └── main/
│           ├── AndroidManifest.xml
│           ├── java/
│           │   └── cn/
│           │       └── gavinliu/
│           │           └── android/
│           │               └── lib/
│           │                   └── scale/
│           │                       ├── ScaleFrameLayout.java
│           │                       ├── ScaleLinearLayout.java
│           │                       ├── ScaleRelativeLayout.java
│           │                       ├── config/
│           │                       │   └── ScaleConfig.java
│           │                       └── helper/
│           │                           └── ScaleLayoutHelper.java
│           └── res/
│               └── values/
│                   ├── attrs.xml
│                   └── strings.xml
├── build.gradle
└── settings.gradle

================================================
FILE CONTENTS
================================================

================================================
FILE: .gitignore
================================================
#Android generated
bin
gen
gen*

#Eclipse
.project
.classpath
.settings

#IntelliJ IDEA
.idea
*.iml
*.ipr
*.iws
out

#Maven
target
release.properties
pom.xml.*

#Ant
build.xml
local.properties
proguard.cfg

#Gradle
.gradle
build

#OSX
.DS_Store

#Personal Files
signing.


# Built application files
*.apk
*.ap_

# Files for the Dalvik VM
*.dex

# Java class files
*.class

# Generated files
bin/
gen/

# Gradle files
.gradle/
build/

# Local configuration file (sdk path, etc)
local.properties

# Proguard folder generated by Eclipse
proguard/

# Log Files
*.log

gradle.properties
gradle/
gradlew
gradlew.bat

================================================
FILE: README.md
================================================
# Android-ScaleLayout

A Simple & Convenience MultiScreen-Support-Library for Android

## The essence is percent scaling.

### different from ``android-percent-support-lib``

1. **More reliable**      
    ``android-percent-support-lib`` The percentage of the parent and child views.       
    ``Android-ScaleLayout`` The percentage of the design and devices screens.       

2. **More convenience**       
    ``android-percent-support-lib`` need to calculate percent.      
    ``Android-ScaleLayout`` directly write the design size on ``layout.xml``.       


## How to look?

![screenhot](/screenhot.png)


## Principle

```java
float realPixel = percent * designPixel
```

### Pix Mode

```java
float realPixel = percent * designPixel

float percent = mScreenWidth / designScreenWidth

float designPixel = res.getDimensionPixelSize()
```
```java
float realPixel = mScreenWidth * res.getDimensionPixelSize() / designScreenWidth
```

### DP Mode
```java
float realPixel = percent * designPixel

float percent = mScreenWidth / designScreenWidth
float designPixel = designDP * designDensity // dp to pixel

float designDP = res.getDimensionPixelSize() / mDensity
```
```java
float realPixel = (mScreenWidth * designDensity * getPixelSize()) / (designScreenWidth * mDensity)
```

## Usage

### 0. dependencies

```
dependencies {
    compile 'cn.gavinliu.android.lib:ScaleLayout:1.0.4'
}
```

### 1. Initialize

```java
public class MyApplication extends Application {

    @Override
    public void onCreate() {
        ScaleConfig.create(this,
            1080, // Design Width
            1920, // Design Height
            3,    // Design Density
            3,    // Design FontScale
            ScaleConfig.DIMENS_UNIT_DP);
    }
}
```

> ``TypedValue.COMPLEX_UNIT_SP`` is Android FontSize unit, the ``fontscale``:
> float fontScale = ctx.getResources().getDisplayMetrics().scaledDensity;

### 2. Scale***Layout

Only need to replace ``FrameLayout`` ``LinearLayout`` ``RelativeLayout`` to ``ScaleFrameLayout`` ``ScaleLinearLayout`` ``ScaleRelativeLayout``.

### 3. Scale by width or height

Width is default, you can also changed using attr.

```xml
<attr name="layout_scale_by" format="enum">
    <enum name="width" value="0"/>
    <enum name="height" value="1"/>
</attr>
```
```xml
app:layout_scale_by="width"
```

### Support Attrs

```xml
<attr name="android:layout_width"/>
<attr name="android:layout_height"/>

<attr name="android:layout_margin"/>
<attr name="android:layout_marginLeft"/>
<attr name="android:layout_marginTop"/>
<attr name="android:layout_marginRight"/>
<attr name="android:layout_marginBottom"/>
<attr name="android:layout_marginStart"/>
<attr name="android:layout_marginEnd"/>

<attr name="android:padding"/>
<attr name="android:paddingLeft"/>
<attr name="android:paddingTop"/>
<attr name="android:paddingRight"/>
<attr name="android:paddingBottom"/>
<attr name="android:paddingStart"/>
<attr name="android:paddingEnd"/>

<!-- TextView -->
<attr name="android:textSize"/>
```

## License

MIT


================================================
FILE: README_zh.md
================================================
# Android-ScaleLayout

一个简单的,方便的多屏适配的Android库

## 本质就是百分比缩放

### 和 android-percent-support-lib 的不同

1. **更科学**      
    ``android-percent-support-lib`` 是父控件和子控件的百分比关系      
    ``Android-ScaleLayout`` 是设计界面和设备界面的百分比关系      

2. **更方便**
    ``android-percent-support-lib`` 需要把设计尺寸算成百分比      
    ``Android-ScaleLayout`` 直接把设计尺寸填入``layou.xml``即可      


## How to look?

![screenhot](/screenhot.png)


## 原理

```java
float realPixel = percent * designPixel
```

### Pix Mode

```java
float realPixel = percent * designPixel

float percent = mScreenWidth / designScreenWidth

float designPixel = res.getDimensionPixelSize()
```
```java
float realPixel = mScreenWidth * res.getDimensionPixelSize() / designScreenWidth
```

### DP Mode
```java
float realPixel = percent * designPixel

float percent = mScreenWidth / designScreenWidth
float designPixel = designDP * designDensity // dp to pixel

float designDP = res.getDimensionPixelSize() / mDensity
```
```java
float realPixel = (mScreenWidth * designDensity * getPixelSize()) / (designScreenWidth * mDensity)
```

## 使用

### 0. 依赖

```
dependencies {
    compile 'cn.gavinliu.android.lib:ScaleLayout:1.0.4'
}
```

### 1. 初始化

```java
public class MyApplication extends Application {

    @Override
    public void onCreate() {
        ScaleConfig.create(this,
            1080, // Design Width
            1920, // Design Height
            3,    // Design Density
            3,    // Design FontScale
            ScaleConfig.DIMENS_UNIT_DP);
    }
}
```

> Android 文字大小的单位是 ``sp``，字体的缩放方式需要 FontScale：
> float fontScale = ctx.getResources().getDisplayMetrics().scaledDensity;

### 2. Scale***Layout

只需要把 ``FrameLayout`` ``LinearLayout`` ``RelativeLayout`` 替换成 ``ScaleFrameLayout`` ``ScaleLinearLayout`` ``ScaleRelativeLayout``.

### 3. Scale by width or height

默认是 width，当然你可以用属性修改。

```xml
<attr name="layout_scale_by" format="enum">
    <enum name="width" value="0"/>
    <enum name="height" value="1"/>
</attr>
```
```xml
app:layout_scale_by="width"
```

### 支持的属性

```xml
<attr name="android:layout_width"/>
<attr name="android:layout_height"/>

<attr name="android:layout_margin"/>
<attr name="android:layout_marginLeft"/>
<attr name="android:layout_marginTop"/>
<attr name="android:layout_marginRight"/>
<attr name="android:layout_marginBottom"/>
<attr name="android:layout_marginStart"/>
<attr name="android:layout_marginEnd"/>

<attr name="android:padding"/>
<attr name="android:paddingLeft"/>
<attr name="android:paddingTop"/>
<attr name="android:paddingRight"/>
<attr name="android:paddingBottom"/>
<attr name="android:paddingStart"/>
<attr name="android:paddingEnd"/>

<!-- TextView -->
<attr name="android:textSize"/>
```

## License

MIT


================================================
FILE: Sample/.gitignore
================================================
/build


================================================
FILE: Sample/build.gradle
================================================
apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.1"

    defaultConfig {
        applicationId "cn.gavinliu.android_scalelayout"
        minSdkVersion 9
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles 'proguard-rules.pro'
        }
    }
}

dependencies {
//    compile project(':ScaleLayout')
    compile 'cn.gavinliu.android.lib:ScaleLayout:1.0.4'

    compile 'com.android.support:appcompat-v7:24.2.0'
}


================================================
FILE: Sample/proguard-rules.pro
================================================
# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in /home/gavin/Develop/android-sdk/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the proguardFiles
# directive in build.gradle.
#
# For more details, see
#   http://developer.android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
#   public *;
#}


================================================
FILE: Sample/src/androidTest/java/cn/gavinliu/android_scalelayout/ApplicationTest.java
================================================
package cn.gavinliu.android_scalelayout;

import android.app.Application;
import android.test.ApplicationTestCase;

/**
 * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
 */
public class ApplicationTest extends ApplicationTestCase<Application> {
    public ApplicationTest() {
        super(Application.class);
    }
}

================================================
FILE: Sample/src/main/AndroidManifest.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="cn.gavinliu.android_scalelayout">

    <application
        android:name=".MainApplication"
        android:allowBackup="true"
        android:configChanges="keyboardHidden|orientation|screenSize|locale"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme">
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>

                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>

        <activity
            android:name=".DemoActivity"
            android:label="Demo"/>

        <activity
            android:name=".DemoListActivity"
            android:label="Demo List"/>

    </application>

</manifest>


================================================
FILE: Sample/src/main/java/cn/gavinliu/android_scalelayout/DemoActivity.java
================================================
package cn.gavinliu.android_scalelayout;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;

/**
 * Created by Gavin on 2016/11/20.
 */

public class DemoActivity extends AppCompatActivity {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_demo);
    }
}


================================================
FILE: Sample/src/main/java/cn/gavinliu/android_scalelayout/DemoListActivity.java
================================================
package cn.gavinliu.android_scalelayout;

import android.content.Context;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;

/**
 * Created by Gavin on 2016/11/20.
 */

public class DemoListActivity extends AppCompatActivity {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_demo_list);

        ListView listView = (ListView) findViewById(R.id.list);
        listView.setAdapter(new Adapter(getApplicationContext()));
    }

    @NonNull
    @Override
    public LayoutInflater getLayoutInflater() {
        return super.getLayoutInflater();
    }

    private static class Adapter extends BaseAdapter {

        private Context ctx;

        private Adapter(Context ctx) {
            this.ctx = ctx;
        }

        @Override
        public int getCount() {
            return 20;
        }

        @Override
        public Object getItem(int position) {
            return null;
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            if (convertView == null) {
                convertView = LayoutInflater.from(ctx).inflate(R.layout.item_demo_list, parent, false);
            }
            return convertView;
        }
    }

}


================================================
FILE: Sample/src/main/java/cn/gavinliu/android_scalelayout/MainActivity.java
================================================
package cn.gavinliu.android_scalelayout;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void demo(View view) {
        Intent intent = new Intent(this, DemoActivity.class);
        startActivity(intent);
    }

    public void demoList(View view) {
        Intent intent = new Intent(this, DemoListActivity.class);
        startActivity(intent);
    }

}


================================================
FILE: Sample/src/main/java/cn/gavinliu/android_scalelayout/MainApplication.java
================================================
package cn.gavinliu.android_scalelayout;

import android.app.Application;

import cn.gavinliu.android.lib.scale.config.ScaleConfig;

/**
 * Created by Gavin on 16-11-10.
 */

public class MainApplication extends Application {

    @Override
    public void onCreate() {
        super.onCreate();
        ScaleConfig.create(this,
                1080, // Design Width
                1920, // Design Height
                3,    // Design Density
                3,    // Design FontScale
                ScaleConfig.DIMENS_UNIT_DP);
        ScaleConfig.getInstance().setDebug(true);
    }
}


================================================
FILE: Sample/src/main/res/layout/activity_demo.xml
================================================
<cn.gavinliu.android.lib.scale.ScaleRelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingTop="2dp">

    <cn.gavinliu.android.lib.scale.ScaleLinearLayout
        android:id="@+id/view"
        android:layout_width="300dp"
        android:layout_height="100dp"
        android:layout_marginTop="6dp"
        android:background="#ccc"
        android:orientation="vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="12dp"
            android:layout_marginStart="12dp"
            android:layout_marginTop="8dp"
            android:background="#46b34b"
            android:paddingLeft="10dp"
            android:paddingTop="10dp"
            android:text="@string/app_name"
            android:textSize="14sp" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="12dp"
            android:layout_marginStart="12dp"
            android:layout_marginTop="8dp"
            android:background="#46b34b"
            android:paddingBottom="10dp"
            android:paddingTop="10dp"
            android:text="@string/hello_world" />

    </cn.gavinliu.android.lib.scale.ScaleLinearLayout>

    <cn.gavinliu.android.lib.scale.ScaleFrameLayout
        android:layout_width="360dp"
        android:layout_height="300dp"
        android:layout_below="@id/view"
        android:layout_marginTop="8dp"
        android:background="#46b"
        android:paddingTop="8dp">

        <TextView
            android:layout_width="166dp"
            android:layout_height="120dp"
            android:layout_marginLeft="12dp"
            android:layout_marginTop="8dp"
            android:background="#46b34b" />

    </cn.gavinliu.android.lib.scale.ScaleFrameLayout>

</cn.gavinliu.android.lib.scale.ScaleRelativeLayout>


================================================
FILE: Sample/src/main/res/layout/activity_demo_list.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <ListView
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>

================================================
FILE: Sample/src/main/res/layout/activity_main.xml
================================================
<cn.gavinliu.android.lib.scale.ScaleLinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:onClick="demo"
        android:text="Demo"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:onClick="demoList"
        android:text="Demo List"/>

</cn.gavinliu.android.lib.scale.ScaleLinearLayout>


================================================
FILE: Sample/src/main/res/layout/item_demo_list.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<cn.gavinliu.android.lib.scale.ScaleLinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:padding="12dp">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:src="@mipmap/ic_launcher"/>

    <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginStart="10dp"
        android:minHeight="50dp"
        android:text="@string/hello_world"
        android:textColor="#000000"/>

</cn.gavinliu.android.lib.scale.ScaleLinearLayout>

================================================
FILE: Sample/src/main/res/menu/menu_main.xml
================================================
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools" tools:context=".MainActivity">
    <item android:id="@+id/action_settings" android:title="@string/action_settings"
        android:orderInCategory="100" app:showAsAction="never" />
</menu>


================================================
FILE: Sample/src/main/res/values/dimens.xml
================================================
<resources>

</resources>


================================================
FILE: Sample/src/main/res/values/strings.xml
================================================
<resources>
    <string name="app_name">Android-ScaleLayout</string>

    <string name="hello_world">Hello world!</string>
    <string name="action_settings">Settings</string>
</resources>


================================================
FILE: Sample/src/main/res/values/styles.xml
================================================
<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
    </style>

</resources>


================================================
FILE: Sample/src/main/res/values-w820dp/dimens.xml
================================================
<resources>
    <!-- Example customization of dimensions originally defined in res/values/dimens.xml
         (such as screen margins) for screens with more than 820dp of available width. This
         would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
    <dimen name="activity_horizontal_margin">64dp</dimen>
</resources>


================================================
FILE: ScaleLayout/.gitignore
================================================
/build


================================================
FILE: ScaleLayout/build.gradle
================================================
apply plugin: 'com.android.library'

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.1"

    defaultConfig {
        minSdkVersion 9
        targetSdkVersion 24
        versionCode 5
        versionName "1.0.4"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile 'com.android.support:support-v4:24.2.0'
}

apply plugin: 'com.github.dcendents.android-maven'
apply plugin: 'com.jfrog.bintray'

def siteUrl = 'https://github.com/gavinliu/Android-ScaleLayout' // 项目的主页
def gitUrl = 'https://github.com/gavinliu/Android-ScaleLayout.git' // Git仓库的url

version = "1.0.4"
group = "cn.gavinliu.android.lib"

install {
    repositories.mavenInstaller {
        pom {
            project {
                packaging 'aar'

                //添加项目描述
                name 'ScaleLayout: A MultiScreen-Support-Library for Android'
                url siteUrl

                //设置开源证书信息
                licenses {
                    license {
                        name 'The MIT License (MIT)'
                        url 'http://mit-license.org/'
                    }
                }
                //添加开发者信息
                developers {
                    developer {
                        id 'gavin6liu'
                        name 'Gavin.Liu'
                        email 'gavin6liu@gmail.com'
                    }
                }

                scm {
                    connection gitUrl
                    developerConnection gitUrl
                    url siteUrl
                }
            }
        }
    }
}

task sourcesJar(type: Jar) {
    from android.sourceSets.main.java.srcDirs
    classifier = 'sources'
}

task javadoc(type: Javadoc) {
    source = android.sourceSets.main.java.srcDirs
    classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
}

task javadocJar(type: Jar, dependsOn: javadoc) {
    classifier = 'javadoc'
    from javadoc.destinationDir
}

artifacts {
    archives javadocJar
    archives sourcesJar
}

Properties properties = new Properties()
properties.load(project.rootProject.file('local.properties').newDataInputStream())

bintray {
    user = properties.getProperty("bintray.user")
    key = properties.getProperty("bintray.apikey")

    configurations = ['archives']

    pkg {
        repo = "maven"//上传的中央仓库名称
        name = "ScaleLayout"//上传的项目的名字
        websiteUrl = siteUrl
        vcsUrl = gitUrl
        licenses = ["MIT"]
        publish = true  //是否发布
    }
}

================================================
FILE: ScaleLayout/proguard-rules.pro
================================================
# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in /home/gavin/Develop/android-sdk/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the proguardFiles
# directive in build.gradle.
#
# For more details, see
#   http://developer.android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
#   public *;
#}


================================================
FILE: ScaleLayout/src/androidTest/java/cn/gavinliu/android/lib/scale/ApplicationTest.java
================================================
package cn.gavinliu.android.lib.scale;

import android.app.Application;
import android.test.ApplicationTestCase;

/**
 * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
 */
public class ApplicationTest extends ApplicationTestCase<Application> {
    public ApplicationTest() {
        super(Application.class);
    }
}

================================================
FILE: ScaleLayout/src/main/AndroidManifest.xml
================================================
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="cn.gavinliu.android.lib.scale">

    <application android:allowBackup="true" android:label="@string/app_name">

    </application>

</manifest>


================================================
FILE: ScaleLayout/src/main/java/cn/gavinliu/android/lib/scale/ScaleFrameLayout.java
================================================
package cn.gavinliu.android.lib.scale;

import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.widget.FrameLayout;

import cn.gavinliu.android.lib.scale.helper.ScaleLayoutHelper;

/**
 * Created by GavinLiu on 2015-08-10
 */
public class ScaleFrameLayout extends FrameLayout {

    private ScaleLayoutHelper mHelper;

    public ScaleFrameLayout(Context context) {
        this(context, null);
    }

    public ScaleFrameLayout(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public ScaleFrameLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        if (!isInEditMode()) {
            mHelper = ScaleLayoutHelper.create(this, attrs);
        }
    }

    @Override
    protected LayoutParams generateDefaultLayoutParams() {
        return new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
    }

    @Override
    public LayoutParams generateLayoutParams(AttributeSet attrs) {
        return new LayoutParams(this.getContext(), attrs, isInEditMode());
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        if (!isInEditMode()) {
            this.mHelper.adjustHost(widthMeasureSpec, heightMeasureSpec);
            this.mHelper.adjustChildren(widthMeasureSpec, heightMeasureSpec);
        }

        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
//        if (this.mHelper.handleMeasuredStateTooSmall()) {
//            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
//        }
    }

    @Override
    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
        super.onLayout(changed, left, top, right, bottom);
//        this.mHelper.restoreOriginalParams();
    }

    public static class LayoutParams extends FrameLayout.LayoutParams implements ScaleLayoutHelper.ScaleLayoutParams {
        private ScaleLayoutHelper.ScaleLayoutInfo mPercentLayoutInfo;

        public LayoutParams(Context c, AttributeSet attrs) {
            super(c, attrs);
            this.mPercentLayoutInfo = ScaleLayoutHelper.getScaleLayoutInfo(c, attrs);
        }

        private LayoutParams(Context c, AttributeSet attrs, boolean isInEditMode) {
            super(c, attrs);
            if (!isInEditMode) {
                this.mPercentLayoutInfo = ScaleLayoutHelper.getScaleLayoutInfo(c, attrs);
            }
        }

        public LayoutParams(int width, int height) {
            super(width, height);
        }

        public LayoutParams(android.view.ViewGroup.LayoutParams source) {
            super(source);
        }

        public LayoutParams(MarginLayoutParams source) {
            super(source);
        }

        @Override
        public ScaleLayoutHelper.ScaleLayoutInfo getScaleLayoutInfo() {
            return this.mPercentLayoutInfo;
        }

        @Override
        protected void setBaseAttributes(TypedArray a, int widthAttr, int heightAttr) {
            ScaleLayoutHelper.fetchWidthAndHeight(this, a, widthAttr, heightAttr);
        }

        @Override
        public void setMargins(int left, int top, int right, int bottom) {
            super.setMargins(left, top, right, bottom);
            if (mPercentLayoutInfo != null) {
                mPercentLayoutInfo.setMargins(left, top, right, bottom);
            }
        }
    }
}


================================================
FILE: ScaleLayout/src/main/java/cn/gavinliu/android/lib/scale/ScaleLinearLayout.java
================================================
package cn.gavinliu.android.lib.scale;

import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Build;
import android.util.AttributeSet;
import android.widget.LinearLayout;

import cn.gavinliu.android.lib.scale.helper.ScaleLayoutHelper;

/**
 * Created by Gavin on 16-9-20.
 */
public class ScaleLinearLayout extends LinearLayout {

    private ScaleLayoutHelper mHelper;

    public ScaleLinearLayout(Context context) {
        this(context, null);
    }

    public ScaleLinearLayout(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public ScaleLinearLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        if (!isInEditMode()) {
            mHelper = ScaleLayoutHelper.create(this, attrs);
        }
    }

    @Override
    protected LayoutParams generateDefaultLayoutParams() {
        return new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
    }

    @Override
    public LayoutParams generateLayoutParams(AttributeSet attrs) {
        return new LayoutParams(this.getContext(), attrs, isInEditMode());
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        if (!isInEditMode()) {
            this.mHelper.adjustHost(widthMeasureSpec, heightMeasureSpec);
            this.mHelper.adjustChildren(widthMeasureSpec, heightMeasureSpec);
        }
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
//        if (this.mHelper.handleMeasuredStateTooSmall()) {
//            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
//        }
    }

    @Override
    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
        super.onLayout(changed, left, top, right, bottom);
//        this.mHelper.restoreOriginalParams();
    }

    public static class LayoutParams extends LinearLayout.LayoutParams implements ScaleLayoutHelper.ScaleLayoutParams {
        private ScaleLayoutHelper.ScaleLayoutInfo mPercentLayoutInfo;

        public LayoutParams(Context c, AttributeSet attrs) {
            super(c, attrs);
            this.mPercentLayoutInfo = ScaleLayoutHelper.getScaleLayoutInfo(c, attrs);
        }

        private LayoutParams(Context c, AttributeSet attrs, boolean isInEditMode) {
            super(c, attrs);
            if (!isInEditMode) {
                this.mPercentLayoutInfo = ScaleLayoutHelper.getScaleLayoutInfo(c, attrs);
            }
        }

        public LayoutParams(int width, int height) {
            super(width, height);
        }

        public LayoutParams(android.view.ViewGroup.LayoutParams source) {
            super(source);
        }

        public LayoutParams(MarginLayoutParams source) {
            super(source);
        }

        @Override
        public ScaleLayoutHelper.ScaleLayoutInfo getScaleLayoutInfo() {
            return this.mPercentLayoutInfo;
        }

        @Override
        protected void setBaseAttributes(TypedArray a, int widthAttr, int heightAttr) {
            ScaleLayoutHelper.fetchWidthAndHeight(this, a, widthAttr, heightAttr);
        }

        @Override
        public void setMargins(int left, int top, int right, int bottom) {
            super.setMargins(left, top, right, bottom);
            if (mPercentLayoutInfo != null) {
                mPercentLayoutInfo.setMargins(left, top, right, bottom);
            }
        }
    }
}


================================================
FILE: ScaleLayout/src/main/java/cn/gavinliu/android/lib/scale/ScaleRelativeLayout.java
================================================
package cn.gavinliu.android.lib.scale;

import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.widget.RelativeLayout;

import cn.gavinliu.android.lib.scale.helper.ScaleLayoutHelper;

/**
 * Created by GavinLiu on 2015-08-10
 */
public class ScaleRelativeLayout extends RelativeLayout {

    private ScaleLayoutHelper mHelper;

    public ScaleRelativeLayout(Context context) {
        this(context, null);
    }

    public ScaleRelativeLayout(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public ScaleRelativeLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        if (!isInEditMode()) {
            mHelper = ScaleLayoutHelper.create(this, attrs);
        }
    }

    @Override
    protected LayoutParams generateDefaultLayoutParams() {
        return new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
    }

    @Override
    public LayoutParams generateLayoutParams(AttributeSet attrs) {
        return new LayoutParams(this.getContext(), attrs, isInEditMode());
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        if (!isInEditMode()) {
            this.mHelper.adjustHost(widthMeasureSpec, heightMeasureSpec);
            this.mHelper.adjustChildren(widthMeasureSpec, heightMeasureSpec);
        }

        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
//        if (this.mHelper.handleMeasuredStateTooSmall()) {
//            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
//        }
    }

    @Override
    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
        super.onLayout(changed, left, top, right, bottom);
//        this.mHelper.restoreOriginalParams();
    }

    public static class LayoutParams extends android.widget.RelativeLayout.LayoutParams implements ScaleLayoutHelper.ScaleLayoutParams {
        private ScaleLayoutHelper.ScaleLayoutInfo mPercentLayoutInfo;

        public LayoutParams(Context c, AttributeSet attrs) {
            super(c, attrs);
            this.mPercentLayoutInfo = ScaleLayoutHelper.getScaleLayoutInfo(c, attrs);
        }

        private LayoutParams(Context c, AttributeSet attrs, boolean isInEditMode) {
            super(c, attrs);
            if (!isInEditMode) {
                this.mPercentLayoutInfo = ScaleLayoutHelper.getScaleLayoutInfo(c, attrs);
            }
        }

        public LayoutParams(int width, int height) {
            super(width, height);
        }

        public LayoutParams(android.view.ViewGroup.LayoutParams source) {
            super(source);
        }

        public LayoutParams(MarginLayoutParams source) {
            super(source);
        }

        @Override
        public ScaleLayoutHelper.ScaleLayoutInfo getScaleLayoutInfo() {
            return this.mPercentLayoutInfo;
        }

        @Override
        protected void setBaseAttributes(TypedArray a, int widthAttr, int heightAttr) {
            ScaleLayoutHelper.fetchWidthAndHeight(this, a, widthAttr, heightAttr);
        }

        @Override
        public void setMargins(int left, int top, int right, int bottom) {
            super.setMargins(left, top, right, bottom);
            if (mPercentLayoutInfo != null) {
                mPercentLayoutInfo.setMargins(left, top, right, bottom);
            }
        }
    }
}


================================================
FILE: ScaleLayout/src/main/java/cn/gavinliu/android/lib/scale/config/ScaleConfig.java
================================================
package cn.gavinliu.android.lib.scale.config;

import android.content.Context;

/**
 * Created by Gavin on 16-9-20.
 */
public class ScaleConfig {

    private int mDesignWidth;
    private int mDesignHeight;
    private float mDesignDensity;

    private int mScreenWidth;
    private int mScreenHeight;
    private float mScreenDensity;

    private float mDesignFontScale;
    private float mScreenFontScale;

    private int mDimensionUnit;

    public static final int DIMENS_UNIT_DP = 0;
    public static final int DIMENS_UNIT_PIX = 1;

    private boolean mDebug;

    private static ScaleConfig mInstance;

    /**
     * @param ctx             Context
     * @param designWidth     Design Width (Pixel)
     * @param designHeight    Design Height (Pixel)
     * @param designDensity   Design Density
     * @param designFontScale Design FontScale (getDisplayMetrics().scaledDensity)
     * @param dimensionUnit   DIMENS_UNIT_DP or DIMENS_UNIT_PIX
     * @return Single instance
     */
    public static ScaleConfig create(Context ctx, int designWidth, int designHeight, float designDensity, float designFontScale, int dimensionUnit) {
        if (mInstance == null) {
            mInstance = new ScaleConfig(ctx, designWidth, designHeight, designDensity, designFontScale, dimensionUnit);
        }

        return mInstance;
    }

    public static ScaleConfig getInstance() {
        if (mInstance == null)
            throw new IllegalArgumentException("You must call ScaleConfig.create first");

        return mInstance;
    }

    private ScaleConfig(Context ctx) {
        final int width = ctx.getResources().getDisplayMetrics().widthPixels;
        final int height = ctx.getResources().getDisplayMetrics().heightPixels;
        final float density = ctx.getResources().getDisplayMetrics().density;
        final float fontScale = ctx.getResources().getDisplayMetrics().scaledDensity;

        mScreenWidth = width;
        mScreenHeight = height;
        mScreenDensity = density;
        mScreenFontScale = fontScale;
    }

    private ScaleConfig(Context ctx, int designWidth, int designHeight, float designDensity, float designFontScale, int dimensionUnit) {
        this(ctx);
        mDesignWidth = designWidth;
        mDesignHeight = designHeight;
        mDesignDensity = designDensity;
        mDesignFontScale = designFontScale;
        mDimensionUnit = dimensionUnit;
    }

    public boolean isDebug() {
        return mDebug;
    }

    public void setDebug(boolean debug) {
        mDebug = debug;
    }

    public boolean isDimensUnitByDp() {
        return mDimensionUnit == DIMENS_UNIT_DP;
    }

    public int getDesignWidth() {
        return mDesignWidth;
    }

    public int getDesignHeight() {
        return mDesignHeight;
    }

    public float getDesignDensity() {
        return mDesignDensity;
    }

    public float getScreenDensity() {
        return mScreenDensity;
    }

    public float getDesignFontScale() {
        return mDesignFontScale;
    }

    public float getScreenFontScale() {
        return mScreenFontScale;
    }

    public int getScreenWidth() {
        return mScreenWidth;
    }

    public int getScreenHeight() {
        return mScreenHeight;
    }
}


================================================
FILE: ScaleLayout/src/main/java/cn/gavinliu/android/lib/scale/helper/ScaleLayoutHelper.java
================================================
package cn.gavinliu.android.lib.scale.helper;

import android.content.Context;
import android.content.res.TypedArray;
import android.support.v4.view.MarginLayoutParamsCompat;
import android.support.v4.view.ViewCompat;
import android.util.AttributeSet;
import android.util.Log;
import android.util.TypedValue;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import cn.gavinliu.android.lib.scale.R;
import cn.gavinliu.android.lib.scale.config.ScaleConfig;

/**
 * Created by GavinLiu on 2015-08-10
 */
public class ScaleLayoutHelper {

    private static final String TAG = "ScaleLayoutHelper";

    private final ViewGroup mHost;
    private final ScaleLayoutInfo mHostLayoutInfo;

    public interface ScaleLayoutParams {
        ScaleLayoutInfo getScaleLayoutInfo();
    }

    public ScaleLayoutHelper(ViewGroup host, ScaleLayoutInfo layoutInfo) {
        this.mHost = host;
        this.mHostLayoutInfo = layoutInfo;
    }

    public static ScaleLayoutHelper create(ViewGroup view, AttributeSet attrs) {
        return new ScaleLayoutHelper(view, getScaleLayoutInfo(view.getContext(), attrs));
    }

    public void adjustChildren(int widthMeasureSpec, int heightMeasureSpec) {
        int i = 0;
        for (int N = this.mHost.getChildCount(); i < N; ++i) {
            View view = this.mHost.getChildAt(i);
            ViewGroup.LayoutParams params = view.getLayoutParams();

            if (params instanceof ScaleLayoutParams) {
                ScaleLayoutInfo info = ((ScaleLayoutParams) params).getScaleLayoutInfo();
                if (ScaleConfig.getInstance().isDebug()) {
                    Log.d(TAG, "adjustChildren using " + info + " " + view);
                }
                if (info != null && mHostLayoutInfo != null) {
                    if (params instanceof ViewGroup.MarginLayoutParams) {
                        info.fillMarginLayoutParams(view, (ViewGroup.MarginLayoutParams) params);
                    } else {
                        info.fillLayoutParams(view, params);
                    }

                    info.fillView(view);
                }
            }
        }
    }

    public void adjustHost(int widthMeasureSpec, int heightMeasureSpec) {
        if (mHostLayoutInfo != null) {
            ViewGroup.LayoutParams params = mHost.getLayoutParams();
            if (params instanceof ViewGroup.MarginLayoutParams) {
                mHostLayoutInfo.fillMarginLayoutParams(mHost, (ViewGroup.MarginLayoutParams) params);
            } else {
                mHostLayoutInfo.fillLayoutParams(mHost, params);
            }
        }
    }

    public void restoreOriginalParams() {
        int i = 0;

        for (int N = this.mHost.getChildCount(); i < N; ++i) {
            View view = this.mHost.getChildAt(i);
            ViewGroup.LayoutParams params = view.getLayoutParams();

            if (params instanceof ScaleLayoutParams) {
                ScaleLayoutInfo info = ((ScaleLayoutParams) params).getScaleLayoutInfo();
                if (ScaleConfig.getInstance().isDebug()) {
                    Log.d(TAG, "restoreOriginalParams using " + info);
                }

                if (info != null) {
                    if (params instanceof ViewGroup.MarginLayoutParams) {
                        info.restoreMarginLayoutParams((ViewGroup.MarginLayoutParams) params);
                    } else {
                        info.restoreLayoutParams(params);
                    }
                }
            }
        }

    }

    public static void fetchWidthAndHeight(ViewGroup.LayoutParams params, TypedArray array, int widthAttr, int heightAttr) {
        params.width = array.getLayoutDimension(widthAttr, 0);
        params.height = array.getLayoutDimension(heightAttr, 0);
    }

    public static ScaleLayoutInfo getScaleLayoutInfo(Context context, AttributeSet attrs) {
        ScaleLayoutInfo info = new ScaleLayoutInfo(context);

        TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.ScaleLayout);

        int value = array.getInt(R.styleable.ScaleLayout_layout_scale_by, 0);
        if (value != 0) {
            info.scaleBy = value;
        }

        try {
            value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_layout_width, 0);
            if (value != 0) {
                info.width = value;
            }
        } catch (Exception e) {
        }

        try {
            value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_layout_height, 0);
            if (value != 0) {
                info.height = value;
            }
        } catch (Exception e) {
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_layout_margin, 0);
        if (value != 0) {
            info.leftMargin = value;
            info.topMargin = value;
            info.rightMargin = value;
            info.bottomMargin = value;
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_layout_marginLeft, 0);
        if (value != 0) {
            info.leftMargin = value;
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_layout_marginTop, 0);
        if (value != 0) {
            info.topMargin = value;
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_layout_marginRight, 0);
        if (value != 0) {
            info.rightMargin = value;
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_layout_marginBottom, 0);
        if (value != 0) {
            info.bottomMargin = value;
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_layout_marginStart, 0);
        if (value != 0) {
            info.startMargin = value;
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_layout_marginEnd, 0);
        if (value != 0) {
            info.endMargin = value;
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_padding, 0);
        if (value != 0) {
            info.leftPadding = value;
            info.topPadding = value;
            info.rightPadding = value;
            info.bottomPadding = value;
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_paddingLeft, 0);
        if (value != 0) {
            info.leftPadding = value;
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_paddingTop, 0);
        if (value != 0) {
            info.topPadding = value;
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_paddingRight, 0);
        if (value != 0) {
            info.rightPadding = value;
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_paddingBottom, 0);
        if (value != 0) {
            info.bottomPadding = value;
        }

        value = array.getDimensionPixelSize(R.styleable.ScaleLayout_android_textSize, 0);
        if (value != 0) {
            info.textSize = value;
        }

        array.recycle();

        if (ScaleConfig.getInstance().isDebug()) {
            Log.d(TAG, "constructed: " + info);
        }
        return info;
    }

    public boolean handleMeasuredStateTooSmall() {
        boolean needsSecondMeasure = false;
        int i = 0;

        for (int N = this.mHost.getChildCount(); i < N; ++i) {
            View view = this.mHost.getChildAt(i);
            ViewGroup.LayoutParams params = view.getLayoutParams();

            if (params instanceof ScaleLayoutParams) {
                ScaleLayoutInfo info = ((ScaleLayoutParams) params).getScaleLayoutInfo();
                if (info != null) {
                    if (shouldHandleMeasuredWidthTooSmall(view, info)) {
                        needsSecondMeasure = true;
                        params.width = ViewGroup.LayoutParams.WRAP_CONTENT;
                    }

                    if (shouldHandleMeasuredHeightTooSmall(view, info)) {
                        needsSecondMeasure = true;
                        params.height = ViewGroup.LayoutParams.WRAP_CONTENT;
                    }
                }
            }
        }

        if (ScaleConfig.getInstance().isDebug()) {
            Log.d(TAG, "should trigger second measure pass: " + needsSecondMeasure);
        }

        return needsSecondMeasure;
    }

    private static boolean shouldHandleMeasuredWidthTooSmall(View view, ScaleLayoutInfo info) {
        int state = ViewCompat.getMeasuredWidthAndState(view) & ViewCompat.MEASURED_STATE_MASK;
        return state == ViewCompat.MEASURED_STATE_TOO_SMALL && info.width >= 0.0F && info.mPreservedParams.width == ViewGroup.LayoutParams.WRAP_CONTENT;
    }

    private static boolean shouldHandleMeasuredHeightTooSmall(View view, ScaleLayoutInfo info) {
        int state = ViewCompat.getMeasuredHeightAndState(view) & ViewCompat.MEASURED_STATE_MASK;
        return state == ViewCompat.MEASURED_STATE_TOO_SMALL && info.height >= 0.0F && info.mPreservedParams.height == ViewGroup.LayoutParams.WRAP_CONTENT;
    }

    public static class ScaleLayoutInfo {
        private int designWidth;
        private int designHeight;

        private int screenW;
        private int screenH;

        public int width = 0;
        public int height = 0;

        private int scaleBy = ScaleByWidth;
        private static final int ScaleByWidth = 0;
        private static final int ScaleByHeight = 1;

        private int leftMargin;
        private int topMargin;
        private int rightMargin;
        private int bottomMargin;
        private int startMargin;
        private int endMargin;

        private int leftPadding;
        private int topPadding;
        private int rightPadding;
        private int bottomPadding;

        private int textSize;

        final ViewGroup.MarginLayoutParams mPreservedParams = new ViewGroup.MarginLayoutParams(0, 0);

        public ScaleLayoutInfo(Context ctx) {
            designWidth = ScaleConfig.getInstance().getDesignWidth();
            designHeight = ScaleConfig.getInstance().getDesignHeight();

            screenW = ctx.getResources().getDisplayMetrics().widthPixels;
            screenH = ctx.getResources().getDisplayMetrics().heightPixels;
        }

        public void fillLayoutParams(View view, ViewGroup.LayoutParams params) {
            this.mPreservedParams.width = params.width;
            this.mPreservedParams.height = params.height;

            if (this.width > 0.0) {
                params.width = getRealPixelSize(this.width);
            }

            if (this.height > 0.0) {
                params.height = getRealPixelSize(this.height);
            }

            int paddingL = 0, paddingT = 0, paddingR = 0, paddingB = 0;

            if (this.leftPadding > 0.0) {
                paddingL = getRealPixelSize(this.leftPadding);
            }

            if (this.topPadding > 0.0) {
                paddingT = getRealPixelSize(this.topPadding);
            }

            if (this.rightPadding > 0.0) {
                paddingR = getRealPixelSize(this.rightPadding);
            }

            if (this.bottomPadding > 0.0) {
                paddingB = getRealPixelSize(this.bottomPadding);
            }

            view.setPadding(paddingL, paddingT, paddingR, paddingB);
        }

        public void fillMarginLayoutParams(View view, ViewGroup.MarginLayoutParams params) {
            this.fillLayoutParams(view, params);
            this.mPreservedParams.leftMargin = params.leftMargin;
            this.mPreservedParams.topMargin = params.topMargin;
            this.mPreservedParams.rightMargin = params.rightMargin;
            this.mPreservedParams.bottomMargin = params.bottomMargin;
            MarginLayoutParamsCompat.setMarginStart(this.mPreservedParams, MarginLayoutParamsCompat.getMarginStart(params));
            MarginLayoutParamsCompat.setMarginEnd(this.mPreservedParams, MarginLayoutParamsCompat.getMarginEnd(params));

            if (this.leftMargin > 0.0F) {
                params.leftMargin = getRealPixelSize(this.leftMargin);
            }

            if (this.topMargin > 0.0F) {
                params.topMargin = getRealPixelSize(this.topMargin);
            }

            if (this.rightMargin > 0.0F) {
                params.rightMargin = getRealPixelSize(this.rightMargin);
            }

            if (this.bottomMargin > 0.0F) {
                params.bottomMargin = getRealPixelSize(this.bottomMargin);
            }

            if (this.startMargin > 0.0F) {
                MarginLayoutParamsCompat.setMarginStart(params, getRealPixelSize(this.startMargin));
            }

            if (this.endMargin > 0.0F) {
                MarginLayoutParamsCompat.setMarginEnd(params, getRealPixelSize(this.endMargin));
            }

        }

        public void fillView(View view) {
            if (view instanceof TextView) {
                if (this.textSize > 0) {
                    int newTextSize = getRealFontSize(this.textSize);
                    ((TextView) view).setTextSize(TypedValue.COMPLEX_UNIT_PX, newTextSize);
                }
            }
        }

        public void restoreMarginLayoutParams(ViewGroup.MarginLayoutParams params) {
            this.restoreLayoutParams(params);
            params.leftMargin = this.mPreservedParams.leftMargin;
            params.topMargin = this.mPreservedParams.topMargin;
            params.rightMargin = this.mPreservedParams.rightMargin;
            params.bottomMargin = this.mPreservedParams.bottomMargin;
            MarginLayoutParamsCompat.setMarginStart(params, MarginLayoutParamsCompat.getMarginStart(this.mPreservedParams));
            MarginLayoutParamsCompat.setMarginEnd(params, MarginLayoutParamsCompat.getMarginEnd(this.mPreservedParams));
        }

        public void restoreLayoutParams(ViewGroup.LayoutParams params) {
            params.width = this.mPreservedParams.width;
            params.height = this.mPreservedParams.height;
        }

        public void setMargins(int left, int top, int right, int bottom) {
            leftPadding = left;
            topPadding = top;
            rightPadding = right;
            bottomPadding = bottom;
        }

        private int getRealFontSize(int pix) {
            int screen, design;
            switch (scaleBy) {
                case ScaleByHeight:
                    screen = screenH;
                    design = designHeight;
                    break;
                default:
                    screen = screenW;
                    design = designWidth;
                    break;
            }

            return getRealPixelSizeBySP(pix, screen, design);
        }

        private int getRealPixelSize(int pix) {
            int screen, design;
            switch (scaleBy) {
                case ScaleByHeight:
                    screen = screenH;
                    design = designHeight;
                    break;
                default:
                    screen = screenW;
                    design = designWidth;
                    break;
            }

            if (ScaleConfig.getInstance().isDimensUnitByDp()) {
                return getRealPixelSizeByDp(pix, screen, design);
            } else {
                return getRealPixelSizeByPix(pix, screen, design);
            }
        }

        private int getRealPixelSizeByPix(int pix, int screen, int design) {
            int result;

            int res = pix * screen;

            if (res % design == 0) {
                result = res / design;
            } else {
                result = res / design + 1;
            }

            if (ScaleConfig.getInstance().isDebug())
                Log.i(TAG, "pix:" + pix + ",result:" + result);
            return result;
        }

        private int getRealPixelSizeByDp(int pix, int screen, int design) {
            float density = ScaleConfig.getInstance().getScreenDensity();
            float designDensity = ScaleConfig.getInstance().getDesignDensity();

            int designDp = convertPix2Dp(density, pix);
            int designPix = convertDp2Pix(designDensity, designDp);

            int result;

            int res = designPix * screen;

            if (res % design == 0) {
                result = res / design;
            } else {
                result = res / design + 1;
            }

            if (ScaleConfig.getInstance().isDebug())
                Log.i(TAG, "pix:" + pix + ",dp:" + designDp + ",result:" + result);
            return result;
        }

        private int getRealPixelSizeBySP(int pix, int screen, int design) {
            float density = ScaleConfig.getInstance().getScreenFontScale();
            float designDensity = ScaleConfig.getInstance().getDesignFontScale();

            int designDp = convertPix2Sp(density, pix);
            int designPix = convertSp2Pix(designDensity, designDp);

            int result;

            int res = designPix * screen;

            if (res % design == 0) {
                result = res / design;
            } else {
                result = res / design + 1;
            }

            if (ScaleConfig.getInstance().isDebug())
                Log.i(TAG, "pix:" + pix + ",sp:" + designDp + ",result:" + result);
            return result;
        }

        private static int convertPix2Dp(float density, int px) {
            return (int) (px / density + 0.5f);
        }

        private static int convertDp2Pix(float density, int dip) {
            return (int) (dip * density + 0.5f);
        }

        private static int convertPix2Sp(float fontScale, float pxValue) {
            return (int) (pxValue / fontScale + 0.5f);
        }

        private static int convertSp2Pix(float fontScale, float spValue) {
            return (int) (spValue * fontScale + 0.5f);
        }
    }

}


================================================
FILE: ScaleLayout/src/main/res/values/attrs.xml
================================================
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="ScaleLayout">

        <attr name="layout_scale_by" format="enum">
            <enum name="width" value="0"/>
            <enum name="height" value="1"/>
        </attr>

        <attr name="android:layout_width"/>
        <attr name="android:layout_height"/>

        <attr name="android:layout_margin"/>
        <attr name="android:layout_marginLeft"/>
        <attr name="android:layout_marginTop"/>
        <attr name="android:layout_marginRight"/>
        <attr name="android:layout_marginBottom"/>
        <attr name="android:layout_marginStart"/>
        <attr name="android:layout_marginEnd"/>

        <attr name="android:padding"/>
        <attr name="android:paddingLeft"/>
        <attr name="android:paddingTop"/>
        <attr name="android:paddingRight"/>
        <attr name="android:paddingBottom"/>
        <attr name="android:paddingStart"/>
        <attr name="android:paddingEnd"/>

        <!-- TextView -->
        <attr name="android:textSize"/>

    </declare-styleable>

</resources>

================================================
FILE: ScaleLayout/src/main/res/values/strings.xml
================================================
<resources>
    <string name="app_name">ScaleLayout</string>
</resources>


================================================
FILE: build.gradle
================================================
// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.2'

        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.2'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}


================================================
FILE: settings.gradle
================================================
include ':Sample', ':ScaleLayout'