├── .gitignore
├── README.md
├── app
    ├── .gitignore
    ├── build.gradle
    ├── proguard-rules.pro
    └── src
    │   ├── androidTest
    │       └── java
    │       │   └── com
    │       │       └── example
    │       │           └── dynamicviewpager
    │       │               └── ExampleInstrumentedTest.kt
    │   ├── main
    │       ├── AndroidManifest.xml
    │       ├── java
    │       │   └── com
    │       │   │   └── example
    │       │   │       └── dynamicviewpager
    │       │   │           ├── App.java
    │       │   │           ├── Image.kt
    │       │   │           ├── ScrollingActivity.kt
    │       │   │           ├── SimpleImageFragment.kt
    │       │   │           └── TransformViewPagerAdapter.kt
    │       └── res
    │       │   ├── drawable-v24
    │       │       └── ic_launcher_foreground.xml
    │       │   ├── drawable
    │       │       └── ic_launcher_background.xml
    │       │   ├── layout
    │       │       ├── activity_main.xml
    │       │       ├── activity_review_detail_header.xml
    │       │       ├── activity_scrolling.xml
    │       │       ├── content_scrolling.xml
    │       │       └── fragment_simple_image.xml
    │       │   ├── menu
    │       │       └── menu_scrolling.xml
    │       │   ├── mipmap-anydpi-v26
    │       │       ├── ic_launcher.xml
    │       │       └── ic_launcher_round.xml
    │       │   ├── mipmap-hdpi
    │       │       ├── ic_launcher.png
    │       │       └── ic_launcher_round.png
    │       │   ├── mipmap-mdpi
    │       │       ├── ic_launcher.png
    │       │       └── ic_launcher_round.png
    │       │   ├── mipmap-xhdpi
    │       │       ├── ic_launcher.png
    │       │       └── ic_launcher_round.png
    │       │   ├── mipmap-xxhdpi
    │       │       ├── ic_launcher.png
    │       │       └── ic_launcher_round.png
    │       │   ├── mipmap-xxxhdpi
    │       │       ├── ic_launcher.png
    │       │       └── ic_launcher_round.png
    │       │   └── values
    │       │       ├── colors.xml
    │       │       ├── dimens.xml
    │       │       ├── strings.xml
    │       │       └── styles.xml
    │   └── test
    │       └── java
    │           └── com
    │               └── example
    │                   └── dynamicviewpager
    │                       └── ExampleUnitTest.kt
├── build.gradle
├── demo.gif
├── gradle.properties
├── gradle
    └── wrapper
    │   ├── gradle-wrapper.jar
    │   └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
├── settings.gradle
└── transformviewpager
    ├── .gitignore
    ├── build.gradle
    ├── consumer-rules.pro
    ├── proguard-rules.pro
    └── src
        ├── androidTest
            └── java
            │   └── com
            │       └── danteandroid
            │           └── transformviewpager
            │               └── ExampleInstrumentedTest.kt
        ├── main
            ├── AndroidManifest.xml
            ├── java
            │   └── com
            │   │   └── danteandroid
            │   │       └── transformviewpager
            │   │           ├── TransformViewPager.kt
            │   │           ├── Transformable.kt
            │   │           └── UiUtils.kt
            └── res
            │   └── values
            │       └── strings.xml
        └── test
            └── java
                └── com
                    └── danteandroid
                        └── transformviewpager
                            └── ExampleUnitTest.kt


/.gitignore:
--------------------------------------------------------------------------------
 1 | *.iml
 2 | .gradle
 3 | /local.properties
 4 | /.idea/caches
 5 | /.idea/libraries
 6 | /.idea/modules.xml
 7 | /.idea/workspace.xml
 8 | /.idea/navEditor.xml
 9 | /.idea/assetWizardSettings.xml
10 | .DS_Store
11 | /build
12 | /captures
13 | .externalNativeBuild
14 | .cxx
15 | /.idea/
16 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # TransformViewPager
 2 | A dynamic-height viewpager which can transform its pages.
 3 | 
 4 | [![](https://jitpack.io/v/DanteAndroid/TransformViewPager.svg)](https://jitpack.io/#DanteAndroid/TransformViewPager)
 5 | 
 6 | ## Demonstration
 7 | 
 8 | <img src="/demo.gif" width="385" height="680" />
 9 | 
10 | ## Dependency
11 | ```
12 |   implementation 'com.github.DanteAndroid:TransformViewPager:v0.1'
13 | ```
14 | 
15 | ## Usage
16 | 0. Use `TransformViewPager` which extends ViewPager
17 | 1. Make your data item implement `Transformable`
18 | 2. Make your ViewPager's adapter implement `TransformableAdapter`
19 | 3. Of course set your TransformableAdapter for the TransformViewPager
20 | 


--------------------------------------------------------------------------------
/app/.gitignore:
--------------------------------------------------------------------------------
1 | /build
2 | 


--------------------------------------------------------------------------------
/app/build.gradle:
--------------------------------------------------------------------------------
 1 | apply plugin: 'com.android.application'
 2 | 
 3 | apply plugin: 'kotlin-android'
 4 | 
 5 | apply plugin: 'kotlin-android-extensions'
 6 | 
 7 | android {
 8 |     compileSdkVersion 29
 9 |     buildToolsVersion "28.0.3"
10 |     defaultConfig {
11 |         applicationId "com.danteandroid.transformviewpager"
12 |         minSdkVersion 19
13 |         targetSdkVersion 29
14 |         versionCode 1
15 |         versionName "1.0"
16 |         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
17 |     }
18 |     buildTypes {
19 |         release {
20 |             minifyEnabled false
21 |             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
22 |         }
23 |     }
24 | }
25 | 
26 | dependencies {
27 |     implementation fileTree(dir: 'libs', include: ['*.jar'])
28 |     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
29 | 
30 |     implementation 'com.github.bumptech.glide:glide:4.9.0'
31 |     implementation 'com.google.code.gson:gson:2.8.6'
32 | 
33 |     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
34 |     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
35 |     implementation 'androidx.appcompat:appcompat:1.1.0'
36 |     implementation 'com.google.android.material:material:1.0.0'
37 |     implementation project(path: ':transformviewpager')
38 | //    implementation 'com.github.DanteAndroid:TransformViewPager:v0.1'
39 | }
40 | 


--------------------------------------------------------------------------------
/app/proguard-rules.pro:
--------------------------------------------------------------------------------
 1 | # Add project specific ProGuard rules here.
 2 | # You can control the set of applied configuration files using the
 3 | # proguardFiles setting in build.gradle.
 4 | #
 5 | # For more details, see
 6 | #   http://developer.android.com/guide/developing/tools/proguard.html
 7 | 
 8 | # If your project uses WebView with JS, uncomment the following
 9 | # and specify the fully qualified class name to the JavaScript interface
10 | # class:
11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
12 | #   public *;
13 | #}
14 | 
15 | # Uncomment this to preserve the line number information for
16 | # debugging stack traces.
17 | #-keepattributes SourceFile,LineNumberTable
18 | 
19 | # If you keep the line number information, uncomment this to
20 | # hide the original source file name.
21 | #-renamesourcefileattribute SourceFile
22 | 


--------------------------------------------------------------------------------
/app/src/androidTest/java/com/example/dynamicviewpager/ExampleInstrumentedTest.kt:
--------------------------------------------------------------------------------
 1 | package com.example.dynamicviewpager
 2 | 
 3 | import androidx.test.platform.app.InstrumentationRegistry
 4 | import androidx.test.ext.junit.runners.AndroidJUnit4
 5 | 
 6 | import org.junit.Test
 7 | import org.junit.runner.RunWith
 8 | 
 9 | import org.junit.Assert.*
10 | 
11 | /**
12 |  * Instrumented test, which will execute on an Android device.
13 |  *
14 |  * See [testing documentation](http://d.android.com/tools/testing).
15 |  */
16 | @RunWith(AndroidJUnit4::class)
17 | class ExampleInstrumentedTest {
18 |     @Test
19 |     fun useAppContext() {
20 |         // Context of the app under test.
21 |         val appContext = InstrumentationRegistry.getInstrumentation().targetContext
22 |         assertEquals("com.example.dynamicviewpager", appContext.packageName)
23 |     }
24 | }
25 | 


--------------------------------------------------------------------------------
/app/src/main/AndroidManifest.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3 |     xmlns:tools="http://schemas.android.com/tools"
 4 |     package="com.example.dynamicviewpager">
 5 | 
 6 |     <uses-permission android:name="android.permission.INTERNET" />
 7 | 
 8 |     <application
 9 |         android:name=".App"
10 |         android:allowBackup="true"
11 |         android:icon="@mipmap/ic_launcher"
12 |         android:label="@string/app_name"
13 |         android:roundIcon="@mipmap/ic_launcher_round"
14 |         android:supportsRtl="true"
15 |         android:theme="@style/AppTheme"
16 |         tools:ignore="AllowBackup,GoogleAppIndexingWarning">
17 |         <activity
18 |             android:name=".ScrollingActivity"
19 |             android:theme="@style/AppTheme.NoActionBar">
20 |             <intent-filter>
21 |                 <action android:name="android.intent.action.MAIN" />
22 | 
23 |                 <category android:name="android.intent.category.LAUNCHER" />
24 |             </intent-filter>
25 |         </activity>
26 |     </application>
27 | 
28 | </manifest>


--------------------------------------------------------------------------------
/app/src/main/java/com/example/dynamicviewpager/App.java:
--------------------------------------------------------------------------------
 1 | package com.example.dynamicviewpager;
 2 | 
 3 | import android.annotation.SuppressLint;
 4 | import android.app.Application;
 5 | import android.content.Context;
 6 | 
 7 | /**
 8 |  * @author Dante
 9 |  * 2019-11-07
10 |  */
11 | public class App extends Application {
12 | 
13 |     @SuppressLint("StaticFieldLeak")
14 |     public static Context context;
15 | 
16 |     @Override
17 |     public void onCreate() {
18 |         super.onCreate();
19 |         context = this;
20 |     }
21 | }
22 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/example/dynamicviewpager/Image.kt:
--------------------------------------------------------------------------------
 1 | package com.example.dynamicviewpager
 2 | 
 3 | import com.danteandroid.transformviewpager.Transformable
 4 | import java.io.Serializable
 5 | 
 6 | /**
 7 |  * @author Dante
 8 |  * 2019-11-07
 9 |  */
10 | data class Image(
11 |     val width: Int,
12 |     val height: Int,
13 |     val format: String,
14 |     val size: Int,
15 |     val url: String
16 | ) : Serializable, Transformable {
17 |     override fun getOriginalWidth(): Float {
18 |         return width.toFloat()
19 |     }
20 | 
21 |     override fun getOrignalHeight(): Float {
22 |         return height.toFloat()
23 |     }
24 | }
25 | 
26 | const val JSON_DATA: String = "[\n" +
27 |         "{\n" +
28 |         "    \"width\": 1000,\n" +
29 |         "    \"height\": 700,\n" +
30 |         "    \"format\": \"jpeg\",\n" +
31 |         "    \"size\": 28340,\n" +
32 |         "    \"url\": \"https://picsum.photos/id/100/1000/700\"\n" +
33 |         "},\n" +
34 |         "{\n" +
35 |         "    \"width\": 1920,\n" +
36 |         "    \"height\": 1080,\n" +
37 |         "    \"format\": \"jpeg\",\n" +
38 |         "    \"size\": 33663,\n" +
39 |         "    \"url\": \"https://picsum.photos/id/99/1920/1080\"\n" +
40 |         "},\n" +
41 |         "{\n" +
42 |         "    \"width\": 720,\n" +
43 |         "    \"height\": 1080,\n" +
44 |         "    \"format\": \"jpeg\",\n" +
45 |         "    \"size\": 704200,\n" +
46 |         "    \"url\": \"https://picsum.photos/id/199/720/1080\"\n" +
47 |         "},\n" +
48 |         "{\n" +
49 |         "    \"width\": 1080,\n" +
50 |         "    \"height\": 1080,\n" +
51 |         "    \"format\": \"jpeg\",\n" +
52 |         "    \"size\": 30155,\n" +
53 |         "    \"url\": \"https://picsum.photos/id/191/1080/1080\"\n" +
54 |         "}\n" +
55 |         "]"


--------------------------------------------------------------------------------
/app/src/main/java/com/example/dynamicviewpager/ScrollingActivity.kt:
--------------------------------------------------------------------------------
 1 | package com.example.dynamicviewpager
 2 | 
 3 | import android.os.Bundle
 4 | import androidx.appcompat.app.AppCompatActivity
 5 | import com.google.gson.Gson
 6 | import kotlinx.android.synthetic.main.activity_review_detail_header.*
 7 | import kotlinx.android.synthetic.main.activity_scrolling.*
 8 | 
 9 | 
10 | class ScrollingActivity : AppCompatActivity() {
11 | 
12 |     override fun onCreate(savedInstanceState: Bundle?) {
13 |         super.onCreate(savedInstanceState)
14 |         setContentView(R.layout.activity_scrolling)
15 |         setSupportActionBar(toolbar)
16 | //        fab.setOnClickListener { view ->
17 | //            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
18 | //                .setAction("Action", null).show()
19 | //        }
20 | 
21 |         // 布局里使用 fitSystemWindows 导致有一个状态栏高度的 padding 存在
22 |         // 暂时没找到好的解决方案。有的话请告诉我
23 |         // https://stackoverflow.com/questions/48137666/viewgroup-inside-collapsingtoolbarlayout-show-extra-bottom-padding-when-set-fits
24 | 
25 |         init()
26 |     }
27 | 
28 |     private fun init() {
29 |         val images = Gson().fromJson(JSON_DATA, Array<Image>::class.java).asList()
30 |         viewPager.adapter = TransformViewPagerAdapter(supportFragmentManager, images)
31 |     }
32 | }
33 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/example/dynamicviewpager/SimpleImageFragment.kt:
--------------------------------------------------------------------------------
 1 | package com.example.dynamicviewpager
 2 | 
 3 | 
 4 | import android.os.Bundle
 5 | import android.view.LayoutInflater
 6 | import android.view.View
 7 | import android.view.ViewGroup
 8 | import androidx.fragment.app.Fragment
 9 | import com.bumptech.glide.Glide
10 | import kotlinx.android.synthetic.main.fragment_simple_image.*
11 | 
12 | /**
13 |  * A simple [Fragment] subclass.
14 |  */
15 | class SimpleImageFragment : Fragment() {
16 | 
17 |     companion object {
18 |         const val ARG_IMAGE = "image"
19 |         fun newInstance(image: Image): SimpleImageFragment {
20 |             return SimpleImageFragment().apply {
21 |                 arguments = Bundle().apply {
22 |                     putSerializable(ARG_IMAGE, image)
23 |                 }
24 |             }
25 |         }
26 |     }
27 | 
28 |     override fun onCreateView(
29 |         inflater: LayoutInflater, container: ViewGroup?,
30 |         savedInstanceState: Bundle?
31 |     ): View? {
32 |         return inflater.inflate(R.layout.fragment_simple_image, container, false)
33 |     }
34 | 
35 | 
36 |     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
37 |         super.onViewCreated(view, savedInstanceState)
38 |         val image = arguments!!.getSerializable(ARG_IMAGE) as Image
39 |         Glide.with(this).load(image.url).fitCenter().into(imageView)
40 |     }
41 | }
42 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/example/dynamicviewpager/TransformViewPagerAdapter.kt:
--------------------------------------------------------------------------------
 1 | package com.example.dynamicviewpager
 2 | 
 3 | import android.view.ViewGroup
 4 | import androidx.fragment.app.Fragment
 5 | import androidx.fragment.app.FragmentManager
 6 | import androidx.fragment.app.FragmentPagerAdapter
 7 | import com.danteandroid.transformviewpager.Transformable
 8 | import com.danteandroid.transformviewpager.TransformableAdapter
 9 | 
10 | /**
11 |  * @author Dante
12 |  * 2019-11-11
13 |  */
14 | 
15 | class TransformViewPagerAdapter(fragmentManager: FragmentManager, val images: List<Image>) :
16 |     FragmentPagerAdapter(fragmentManager), TransformableAdapter {
17 | 
18 |     override fun getTransformableItems(): List<Transformable> {
19 |         return images
20 |     }
21 | 
22 |     private val fragments: ArrayList<SimpleImageFragment> = arrayListOf()
23 | 
24 |     init {
25 |         for (image in images) {
26 |             fragments.add(SimpleImageFragment.newInstance(image))
27 |         }
28 |     }
29 | 
30 |     override fun getItem(index: Int): Fragment = fragments[index]
31 | 
32 |     override fun getCount(): Int = images.size
33 | 
34 |     override fun setPrimaryItem(container: ViewGroup, position: Int, `object`: Any) {
35 |         super.setPrimaryItem(container, position, `object`)
36 |     }
37 | 
38 | }
39 | 


--------------------------------------------------------------------------------
/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
--------------------------------------------------------------------------------
 1 | <vector xmlns:android="http://schemas.android.com/apk/res/android"
 2 |     xmlns:aapt="http://schemas.android.com/aapt"
 3 |     android:width="108dp"
 4 |     android:height="108dp"
 5 |     android:viewportWidth="108"
 6 |     android:viewportHeight="108">
 7 |     <path
 8 |         android:fillType="evenOdd"
 9 |         android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
10 |         android:strokeWidth="1"
11 |         android:strokeColor="#00000000">
12 |         <aapt:attr name="android:fillColor">
13 |             <gradient
14 |                 android:endX="78.5885"
15 |                 android:endY="90.9159"
16 |                 android:startX="48.7653"
17 |                 android:startY="61.0927"
18 |                 android:type="linear">
19 |                 <item
20 |                     android:color="#44000000"
21 |                     android:offset="0.0" />
22 |                 <item
23 |                     android:color="#00000000"
24 |                     android:offset="1.0" />
25 |             </gradient>
26 |         </aapt:attr>
27 |     </path>
28 |     <path
29 |         android:fillColor="#FFFFFF"
30 |         android:fillType="nonZero"
31 |         android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
32 |         android:strokeWidth="1"
33 |         android:strokeColor="#00000000" />
34 | </vector>
35 | 


--------------------------------------------------------------------------------
/app/src/main/res/drawable/ic_launcher_background.xml:
--------------------------------------------------------------------------------
  1 | <?xml version="1.0" encoding="utf-8"?>
  2 | <vector xmlns:android="http://schemas.android.com/apk/res/android"
  3 |     android:width="108dp"
  4 |     android:height="108dp"
  5 |     android:viewportWidth="108"
  6 |     android:viewportHeight="108">
  7 |     <path
  8 |         android:fillColor="#008577"
  9 |         android:pathData="M0,0h108v108h-108z" />
 10 |     <path
 11 |         android:fillColor="#00000000"
 12 |         android:pathData="M9,0L9,108"
 13 |         android:strokeWidth="0.8"
 14 |         android:strokeColor="#33FFFFFF" />
 15 |     <path
 16 |         android:fillColor="#00000000"
 17 |         android:pathData="M19,0L19,108"
 18 |         android:strokeWidth="0.8"
 19 |         android:strokeColor="#33FFFFFF" />
 20 |     <path
 21 |         android:fillColor="#00000000"
 22 |         android:pathData="M29,0L29,108"
 23 |         android:strokeWidth="0.8"
 24 |         android:strokeColor="#33FFFFFF" />
 25 |     <path
 26 |         android:fillColor="#00000000"
 27 |         android:pathData="M39,0L39,108"
 28 |         android:strokeWidth="0.8"
 29 |         android:strokeColor="#33FFFFFF" />
 30 |     <path
 31 |         android:fillColor="#00000000"
 32 |         android:pathData="M49,0L49,108"
 33 |         android:strokeWidth="0.8"
 34 |         android:strokeColor="#33FFFFFF" />
 35 |     <path
 36 |         android:fillColor="#00000000"
 37 |         android:pathData="M59,0L59,108"
 38 |         android:strokeWidth="0.8"
 39 |         android:strokeColor="#33FFFFFF" />
 40 |     <path
 41 |         android:fillColor="#00000000"
 42 |         android:pathData="M69,0L69,108"
 43 |         android:strokeWidth="0.8"
 44 |         android:strokeColor="#33FFFFFF" />
 45 |     <path
 46 |         android:fillColor="#00000000"
 47 |         android:pathData="M79,0L79,108"
 48 |         android:strokeWidth="0.8"
 49 |         android:strokeColor="#33FFFFFF" />
 50 |     <path
 51 |         android:fillColor="#00000000"
 52 |         android:pathData="M89,0L89,108"
 53 |         android:strokeWidth="0.8"
 54 |         android:strokeColor="#33FFFFFF" />
 55 |     <path
 56 |         android:fillColor="#00000000"
 57 |         android:pathData="M99,0L99,108"
 58 |         android:strokeWidth="0.8"
 59 |         android:strokeColor="#33FFFFFF" />
 60 |     <path
 61 |         android:fillColor="#00000000"
 62 |         android:pathData="M0,9L108,9"
 63 |         android:strokeWidth="0.8"
 64 |         android:strokeColor="#33FFFFFF" />
 65 |     <path
 66 |         android:fillColor="#00000000"
 67 |         android:pathData="M0,19L108,19"
 68 |         android:strokeWidth="0.8"
 69 |         android:strokeColor="#33FFFFFF" />
 70 |     <path
 71 |         android:fillColor="#00000000"
 72 |         android:pathData="M0,29L108,29"
 73 |         android:strokeWidth="0.8"
 74 |         android:strokeColor="#33FFFFFF" />
 75 |     <path
 76 |         android:fillColor="#00000000"
 77 |         android:pathData="M0,39L108,39"
 78 |         android:strokeWidth="0.8"
 79 |         android:strokeColor="#33FFFFFF" />
 80 |     <path
 81 |         android:fillColor="#00000000"
 82 |         android:pathData="M0,49L108,49"
 83 |         android:strokeWidth="0.8"
 84 |         android:strokeColor="#33FFFFFF" />
 85 |     <path
 86 |         android:fillColor="#00000000"
 87 |         android:pathData="M0,59L108,59"
 88 |         android:strokeWidth="0.8"
 89 |         android:strokeColor="#33FFFFFF" />
 90 |     <path
 91 |         android:fillColor="#00000000"
 92 |         android:pathData="M0,69L108,69"
 93 |         android:strokeWidth="0.8"
 94 |         android:strokeColor="#33FFFFFF" />
 95 |     <path
 96 |         android:fillColor="#00000000"
 97 |         android:pathData="M0,79L108,79"
 98 |         android:strokeWidth="0.8"
 99 |         android:strokeColor="#33FFFFFF" />
100 |     <path
101 |         android:fillColor="#00000000"
102 |         android:pathData="M0,89L108,89"
103 |         android:strokeWidth="0.8"
104 |         android:strokeColor="#33FFFFFF" />
105 |     <path
106 |         android:fillColor="#00000000"
107 |         android:pathData="M0,99L108,99"
108 |         android:strokeWidth="0.8"
109 |         android:strokeColor="#33FFFFFF" />
110 |     <path
111 |         android:fillColor="#00000000"
112 |         android:pathData="M19,29L89,29"
113 |         android:strokeWidth="0.8"
114 |         android:strokeColor="#33FFFFFF" />
115 |     <path
116 |         android:fillColor="#00000000"
117 |         android:pathData="M19,39L89,39"
118 |         android:strokeWidth="0.8"
119 |         android:strokeColor="#33FFFFFF" />
120 |     <path
121 |         android:fillColor="#00000000"
122 |         android:pathData="M19,49L89,49"
123 |         android:strokeWidth="0.8"
124 |         android:strokeColor="#33FFFFFF" />
125 |     <path
126 |         android:fillColor="#00000000"
127 |         android:pathData="M19,59L89,59"
128 |         android:strokeWidth="0.8"
129 |         android:strokeColor="#33FFFFFF" />
130 |     <path
131 |         android:fillColor="#00000000"
132 |         android:pathData="M19,69L89,69"
133 |         android:strokeWidth="0.8"
134 |         android:strokeColor="#33FFFFFF" />
135 |     <path
136 |         android:fillColor="#00000000"
137 |         android:pathData="M19,79L89,79"
138 |         android:strokeWidth="0.8"
139 |         android:strokeColor="#33FFFFFF" />
140 |     <path
141 |         android:fillColor="#00000000"
142 |         android:pathData="M29,19L29,89"
143 |         android:strokeWidth="0.8"
144 |         android:strokeColor="#33FFFFFF" />
145 |     <path
146 |         android:fillColor="#00000000"
147 |         android:pathData="M39,19L39,89"
148 |         android:strokeWidth="0.8"
149 |         android:strokeColor="#33FFFFFF" />
150 |     <path
151 |         android:fillColor="#00000000"
152 |         android:pathData="M49,19L49,89"
153 |         android:strokeWidth="0.8"
154 |         android:strokeColor="#33FFFFFF" />
155 |     <path
156 |         android:fillColor="#00000000"
157 |         android:pathData="M59,19L59,89"
158 |         android:strokeWidth="0.8"
159 |         android:strokeColor="#33FFFFFF" />
160 |     <path
161 |         android:fillColor="#00000000"
162 |         android:pathData="M69,19L69,89"
163 |         android:strokeWidth="0.8"
164 |         android:strokeColor="#33FFFFFF" />
165 |     <path
166 |         android:fillColor="#00000000"
167 |         android:pathData="M79,19L79,89"
168 |         android:strokeWidth="0.8"
169 |         android:strokeColor="#33FFFFFF" />
170 | </vector>
171 | 


--------------------------------------------------------------------------------
/app/src/main/res/layout/activity_main.xml:
--------------------------------------------------------------------------------
 1 | <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2 |     xmlns:app="http://schemas.android.com/apk/res-auto"
 3 |     android:layout_width="match_parent"
 4 |     android:layout_height="match_parent">
 5 | 
 6 |     <androidx.coordinatorlayout.widget.CoordinatorLayout
 7 |         android:layout_width="match_parent"
 8 |         android:layout_height="match_parent">
 9 | 
10 |         <com.google.android.material.appbar.AppBarLayout
11 |             android:id="@+id/app_bar_layout"
12 |             android:layout_width="match_parent"
13 |             android:layout_height="wrap_content"
14 |             app:elevation="0dp">
15 | 
16 |             <com.google.android.material.appbar.CollapsingToolbarLayout
17 |                 android:id="@+id/collapsing_toolbar_layout"
18 |                 android:layout_width="match_parent"
19 |                 android:layout_height="wrap_content"
20 |                 app:elevation="0dp"
21 |                 app:expandedTitleMarginEnd="0dp"
22 |                 app:expandedTitleMarginStart="0dp"
23 |                 app:layout_scrollFlags="scroll|exitUntilCollapsed">
24 | 
25 |                 <include layout="@layout/activity_review_detail_header" />
26 | 
27 |                 <androidx.appcompat.widget.Toolbar
28 |                     android:id="@+id/toolbar"
29 |                     android:layout_width="match_parent"
30 |                     android:layout_height="?attr/actionBarSize"
31 |                     app:contentInsetEnd="0dp"
32 |                     app:contentInsetStart="0dp"
33 |                     app:layout_collapseMode="pin"
34 |                     app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
35 |                     app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
36 | 
37 |                 </androidx.appcompat.widget.Toolbar>
38 | 
39 |             </com.google.android.material.appbar.CollapsingToolbarLayout>
40 | 
41 |         </com.google.android.material.appbar.AppBarLayout>
42 | 
43 |         <FrameLayout
44 |             android:layout_width="match_parent"
45 |             android:layout_height="match_parent"
46 |             android:visibility="visible"
47 |             app:layout_behavior="@string/appbar_scrolling_view_behavior">
48 | 
49 |             <androidx.core.widget.NestedScrollView
50 |                 android:id="@+id/reviewScrollView"
51 |                 android:layout_width="match_parent"
52 |                 android:layout_height="wrap_content">
53 | 
54 |                 <LinearLayout
55 |                     android:layout_width="match_parent"
56 |                     android:layout_height="wrap_content"
57 |                     android:orientation="vertical"
58 |                     android:paddingStart="21dp"
59 |                     android:paddingEnd="21dp"
60 |                     android:paddingBottom="53dp">
61 | 
62 |                     <TextView
63 |                         android:id="@+id/reviewContent"
64 |                         android:layout_width="match_parent"
65 |                         android:layout_height="wrap_content"
66 |                         android:layout_marginTop="12.5dp"
67 |                         android:lineSpacingMultiplier="1.3"
68 |                         android:text="这部如此热播的剧也横扫黄金时段艾美奖喜剧类最佳剧集、最佳女主、最佳导演、最佳编剧、最佳女配五项大奖！也获得了金球奖音乐喜剧类最佳剧集和最佳女主。第二季仍然是诚意满满之作，三位女性编剧非常擅长在一带而过的细节中深度刻画那个年代的烙印，片中很多细节非常值得考究，而且隐藏的信息量也很大。细节有时更让人感动和惊喜。
69 | 我想说，《了不起的麦瑟尔夫人》从来都不是一部女权爽剧，它在高饱和色，清新、温暖美好的喜剧外表之下，实则在讲述着生活的真实和残酷，人生的矛盾与纠结。
70 | 它有着喜剧的外表，悲剧的内核。这部如此热播的剧也横扫黄金时段艾美奖喜剧类最佳剧集、最佳女主、最佳导演、最佳编剧、最佳女配五项大奖！也获得了金球奖音乐喜剧类最佳剧集和最佳女主。
71 | 第二季仍然是诚意满满之作，三位女性编剧非常擅长在一带而过的细节中深度刻画那个年代的烙印，片中很多细节非常值得考究，而且隐藏的信息量也很大。细节有时更让人感动和惊喜。
72 | 我想说，《了不起的麦瑟尔夫人》从来都不是一部女权爽剧，它在高饱和色，清新、温暖美好的喜剧外表之下，实则在讲述着生活的真实和残酷，人生的矛盾与纠结。
73 | 它有着喜剧的外表，悲剧的内核。"
74 |                         android:textColor="#FF333333"
75 |                         android:textSize="15sp" />
76 | 
77 |                 </LinearLayout>
78 | 
79 |             </androidx.core.widget.NestedScrollView>
80 | 
81 | 
82 |         </FrameLayout>
83 | 
84 |     </androidx.coordinatorlayout.widget.CoordinatorLayout>
85 | 
86 | 
87 | </FrameLayout>
88 | 


--------------------------------------------------------------------------------
/app/src/main/res/layout/activity_review_detail_header.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3 |     android:id="@+id/collapseContent"
 4 |     android:layout_width="match_parent"
 5 |     android:layout_height="wrap_content"
 6 |     android:fitsSystemWindows="true"
 7 |     android:orientation="vertical">
 8 | 
 9 | 
10 |     <com.danteandroid.transformviewpager.TransformViewPager
11 |         android:id="@+id/viewPager"
12 |         android:layout_width="match_parent"
13 |         android:layout_height="wrap_content" />
14 | 
15 | </FrameLayout>


--------------------------------------------------------------------------------
/app/src/main/res/layout/activity_scrolling.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3 |     xmlns:app="http://schemas.android.com/apk/res-auto"
 4 |     xmlns:tools="http://schemas.android.com/tools"
 5 |     android:layout_width="match_parent"
 6 |     android:layout_height="match_parent"
 7 |     android:fitsSystemWindows="true"
 8 |     tools:context="com.example.dynamicviewpager.ScrollingActivity">
 9 | 
10 |     <com.google.android.material.appbar.AppBarLayout
11 |         android:id="@+id/app_bar"
12 |         android:layout_width="match_parent"
13 |         android:layout_height="wrap_content"
14 |         android:fitsSystemWindows="true"
15 |         android:theme="@style/AppTheme.AppBarOverlay">
16 | 
17 |         <com.google.android.material.appbar.CollapsingToolbarLayout
18 |             android:id="@+id/toolbar_layout"
19 |             android:layout_width="match_parent"
20 |             android:layout_height="match_parent"
21 |             android:fitsSystemWindows="true"
22 |             app:contentScrim="?attr/colorPrimary"
23 |             app:layout_scrollFlags="scroll|exitUntilCollapsed"
24 |             app:titleEnabled="false"
25 |             app:toolbarId="@+id/toolbar">
26 | 
27 |             <include layout="@layout/activity_review_detail_header" />
28 | 
29 |             <androidx.appcompat.widget.Toolbar
30 |                 android:id="@+id/toolbar"
31 |                 android:layout_width="match_parent"
32 |                 android:layout_height="?attr/actionBarSize"
33 |                 android:theme="@style/AppTheme.AppBarOverlay"
34 |                 app:layout_collapseMode="pin"
35 |                 app:popupTheme="@style/AppTheme.PopupOverlay" />
36 | 
37 |         </com.google.android.material.appbar.CollapsingToolbarLayout>
38 |     </com.google.android.material.appbar.AppBarLayout>
39 | 
40 |     <include layout="@layout/content_scrolling" />
41 | 
42 | <!--    <com.google.android.material.floatingactionbutton.FloatingActionButton-->
43 | <!--        android:id="@+id/fab"-->
44 | <!--        android:layout_width="wrap_content"-->
45 | <!--        android:layout_height="wrap_content"-->
46 | <!--        android:layout_margin="@dimen/fab_margin"-->
47 | <!--        app:layout_anchor="@id/app_bar"-->
48 | <!--        app:layout_anchorGravity="bottom|end"-->
49 | <!--        app:srcCompat="@android:drawable/ic_dialog_email" />-->
50 | 
51 | </androidx.coordinatorlayout.widget.CoordinatorLayout>
52 | 


--------------------------------------------------------------------------------
/app/src/main/res/layout/content_scrolling.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
 3 |     xmlns:app="http://schemas.android.com/apk/res-auto"
 4 |     xmlns:tools="http://schemas.android.com/tools"
 5 |     android:layout_width="match_parent"
 6 |     android:layout_height="match_parent"
 7 |     app:layout_behavior="@string/appbar_scrolling_view_behavior"
 8 |     tools:context="com.example.dynamicviewpager.ScrollingActivity"
 9 |     tools:showIn="@layout/activity_scrolling">
10 | 
11 |     <TextView
12 |         android:layout_width="wrap_content"
13 |         android:layout_height="wrap_content"
14 |         android:layout_margin="@dimen/text_margin"
15 |         android:text="@string/large_text" />
16 | 
17 | </androidx.core.widget.NestedScrollView>
18 | 


--------------------------------------------------------------------------------
/app/src/main/res/layout/fragment_simple_image.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3 |     xmlns:app="http://schemas.android.com/apk/res-auto"
 4 |     xmlns:tools="http://schemas.android.com/tools"
 5 |     android:layout_width="match_parent"
 6 |     android:layout_height="match_parent"
 7 |     android:fitsSystemWindows="true"
 8 |     tools:context=".SimpleImageFragment">
 9 | 
10 |     <!-- 请使用 centerCrop -->
11 |     <ImageView
12 |         android:id="@+id/imageView"
13 |         android:layout_width="match_parent"
14 |         android:layout_height="match_parent"
15 |         android:fitsSystemWindows="true"
16 |         android:scaleType="centerCrop"
17 |         app:layout_collapseMode="parallax"
18 |         tools:ignore="ContentDescription" />
19 | 
20 | </FrameLayout>


--------------------------------------------------------------------------------
/app/src/main/res/menu/menu_scrolling.xml:
--------------------------------------------------------------------------------
 1 | <menu xmlns:android="http://schemas.android.com/apk/res/android"
 2 |     xmlns:app="http://schemas.android.com/apk/res-auto"
 3 |     xmlns:tools="http://schemas.android.com/tools"
 4 |     tools:context="com.example.dynamicviewpager.ScrollingActivity">
 5 |     <item
 6 |         android:id="@+id/action_settings"
 7 |         android:orderInCategory="100"
 8 |         android:title="@string/action_settings"
 9 |         app:showAsAction="never" />
10 | </menu>
11 | 


--------------------------------------------------------------------------------
/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="utf-8"?>
2 | <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
3 |     <background android:drawable="@drawable/ic_launcher_background" />
4 |     <foreground android:drawable="@drawable/ic_launcher_foreground" />
5 | </adaptive-icon>


--------------------------------------------------------------------------------
/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="utf-8"?>
2 | <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
3 |     <background android:drawable="@drawable/ic_launcher_background" />
4 |     <foreground android:drawable="@drawable/ic_launcher_foreground" />
5 | </adaptive-icon>


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/app/src/main/res/mipmap-hdpi/ic_launcher.png:
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https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/app/src/main/res/mipmap-hdpi/ic_launcher.png


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/app/src/main/res/mipmap-hdpi/ic_launcher_round.png:
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https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/app/src/main/res/mipmap-hdpi/ic_launcher_round.png


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/app/src/main/res/mipmap-mdpi/ic_launcher.png:
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https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/app/src/main/res/mipmap-mdpi/ic_launcher.png


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/app/src/main/res/mipmap-mdpi/ic_launcher_round.png:
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https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/app/src/main/res/mipmap-mdpi/ic_launcher_round.png


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/app/src/main/res/mipmap-xhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/app/src/main/res/mipmap-xhdpi/ic_launcher.png


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/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png:
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https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png


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/app/src/main/res/mipmap-xxhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/app/src/main/res/mipmap-xxhdpi/ic_launcher.png


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/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png:
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https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png


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/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png


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/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png:
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https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png


--------------------------------------------------------------------------------
/app/src/main/res/values/colors.xml:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="utf-8"?>
2 | <resources>
3 |     <color name="colorPrimary">#008577</color>
4 |     <color name="colorPrimaryDark">#00574B</color>
5 |     <color name="colorAccent">#D81B60</color>
6 | </resources>
7 | 


--------------------------------------------------------------------------------
/app/src/main/res/values/dimens.xml:
--------------------------------------------------------------------------------
1 | <resources>
2 |     <dimen name="app_bar_height">180dp</dimen>
3 |     <dimen name="fab_margin">16dp</dimen>
4 |     <dimen name="text_margin">16dp</dimen>
5 | </resources>
6 | 


--------------------------------------------------------------------------------
/app/src/main/res/values/strings.xml:
--------------------------------------------------------------------------------
 1 | <resources>
 2 |     <string name="app_name">DynamicViewPager</string>
 3 |     <string name="title_activity_scrolling">ScrollingActivity</string>
 4 |     <string name="large_text">
 5 |         "Material is the metaphor.\n\n"
 6 | 
 7 |         "A material metaphor is the unifying theory of a rationalized space and a system of motion."
 8 |         "The material is grounded in tactile reality, inspired by the study of paper and ink, yet "
 9 |         "technologically advanced and open to imagination and magic.\n"
10 |         "Surfaces and edges of the material provide visual cues that are grounded in reality. The "
11 |         "use of familiar tactile attributes helps users quickly understand affordances. Yet the "
12 |         "flexibility of the material creates new affordances that supercede those in the physical "
13 |         "world, without breaking the rules of physics.\n"
14 |         "The fundamentals of light, surface, and movement are key to conveying how objects move, "
15 |         "interact, and exist in space and in relation to each other. Realistic lighting shows "
16 |         "seams, divides space, and indicates moving parts.\n\n"
17 | 
18 |         "Bold, graphic, intentional.\n\n"
19 | 
20 |         "The foundational elements of print based design typography, grids, space, scale, color, "
21 |         "and use of imagery guide visual treatments. These elements do far more than please the "
22 |         "eye. They create hierarchy, meaning, and focus. Deliberate color choices, edge to edge "
23 |         "imagery, large scale typography, and intentional white space create a bold and graphic "
24 |         "interface that immerse the user in the experience.\n"
25 |         "An emphasis on user actions makes core functionality immediately apparent and provides "
26 |         "waypoints for the user.\n\n"
27 | 
28 |         "Motion provides meaning.\n\n"
29 | 
30 |         "Motion respects and reinforces the user as the prime mover. Primary user actions are "
31 |         "inflection points that initiate motion, transforming the whole design.\n"
32 |         "All action takes place in a single environment. Objects are presented to the user without "
33 |         "breaking the continuity of experience even as they transform and reorganize.\n"
34 |         "Motion is meaningful and appropriate, serving to focus attention and maintain continuity. "
35 |         "Feedback is subtle yet clear. Transitions are efficient yet coherent.\n\n"
36 | 
37 |         "3D world.\n\n"
38 | 
39 |         "The material environment is a 3D space, which means all objects have x, y, and z "
40 |         "dimensions. The z-axis is perpendicularly aligned to the plane of the display, with the "
41 |         "positive z-axis extending towards the viewer. Every sheet of material occupies a single "
42 |         "position along the z-axis and has a standard 1dp thickness.\n"
43 |         "On the web, the z-axis is used for layering and not for perspective. The 3D world is "
44 |         "emulated by manipulating the y-axis.\n\n"
45 | 
46 |         "Light and shadow.\n\n"
47 | 
48 |         "Within the material environment, virtual lights illuminate the scene. Key lights create "
49 |         "directional shadows, while ambient light creates soft shadows from all angles.\n"
50 |         "Shadows in the material environment are cast by these two light sources. In Android "
51 |         "development, shadows occur when light sources are blocked by sheets of material at "
52 |         "various positions along the z-axis. On the web, shadows are depicted by manipulating the "
53 |         "y-axis only. The following example shows the card with a height of 6dp.\n\n"
54 | 
55 |         "Resting elevation.\n\n"
56 | 
57 |         "All material objects, regardless of size, have a resting elevation, or default elevation "
58 |         "that does not change. If an object changes elevation, it should return to its resting "
59 |         "elevation as soon as possible.\n\n"
60 | 
61 |         "Component elevations.\n\n"
62 | 
63 |         "The resting elevation for a component type is consistent across apps (e.g., FAB elevation "
64 |         "does not vary from 6dp in one app to 16dp in another app).\n"
65 |         "Components may have different resting elevations across platforms, depending on the depth "
66 |         "of the environment (e.g., TV has a greater depth than mobile or desktop).\n\n"
67 | 
68 |         "Responsive elevation and dynamic elevation offsets.\n\n"
69 | 
70 |         "Some component types have responsive elevation, meaning they change elevation in response "
71 |         "to user input (e.g., normal, focused, and pressed) or system events. These elevation "
72 |         "changes are consistently implemented using dynamic elevation offsets.\n"
73 |         "Dynamic elevation offsets are the goal elevation that a component moves towards, relative "
74 |         "to the component’s resting state. They ensure that elevation changes are consistent "
75 |         "across actions and component types. For example, all components that lift on press have "
76 |         "the same elevation change relative to their resting elevation.\n"
77 |         "Once the input event is completed or cancelled, the component will return to its resting "
78 |         "elevation.\n\n"
79 | 
80 |         "Avoiding elevation interference.\n\n"
81 | 
82 |         "Components with responsive elevations may encounter other components as they move between "
83 |         "their resting elevations and dynamic elevation offsets. Because material cannot pass "
84 |         "through other material, components avoid interfering with one another any number of ways, "
85 |         "whether on a per component basis or using the entire app layout.\n"
86 |         "On a component level, components can move or be removed before they cause interference. "
87 |         "For example, a floating action button (FAB) can disappear or move off screen before a "
88 |         "user picks up a card, or it can move if a snackbar appears.\n"
89 |         "On the layout level, design your app layout to minimize opportunities for interference. "
90 |         "For example, position the FAB to one side of stream of a cards so the FAB won’t interfere "
91 |         "when a user tries to pick up one of cards.\n\n"
92 |     </string>
93 |     <string name="action_settings">Settings</string>
94 | </resources>
95 | 


--------------------------------------------------------------------------------
/app/src/main/res/values/styles.xml:
--------------------------------------------------------------------------------
 1 | <resources>
 2 | 
 3 |     <!-- Base application theme. -->
 4 |     <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
 5 |         <!-- Customize your theme here. -->
 6 |         <item name="colorPrimary">@color/colorPrimary</item>
 7 |         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
 8 |         <item name="colorAccent">@color/colorAccent</item>
 9 |     </style>
10 | 
11 |     <style name="AppTheme.NoActionBar">
12 |         <item name="windowActionBar">false</item>
13 |         <item name="windowNoTitle">true</item>
14 |         <item name="android:statusBarColor">@android:color/transparent</item>
15 |     </style>
16 | 
17 |     <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
18 | 
19 |     <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
20 | 
21 | </resources>
22 | 


--------------------------------------------------------------------------------
/app/src/test/java/com/example/dynamicviewpager/ExampleUnitTest.kt:
--------------------------------------------------------------------------------
 1 | package com.example.dynamicviewpager
 2 | 
 3 | import org.junit.Test
 4 | 
 5 | import org.junit.Assert.*
 6 | 
 7 | /**
 8 |  * Example local unit test, which will execute on the development machine (host).
 9 |  *
10 |  * See [testing documentation](http://d.android.com/tools/testing).
11 |  */
12 | class ExampleUnitTest {
13 |     @Test
14 |     fun addition_isCorrect() {
15 |         assertEquals(4, 2 + 2)
16 |     }
17 | }
18 | 


--------------------------------------------------------------------------------
/build.gradle:
--------------------------------------------------------------------------------
 1 | // Top-level build file where you can add configuration options common to all sub-projects/modules.
 2 | 
 3 | buildscript {
 4 |     ext.kotlin_version = '1.3.50'
 5 |     repositories {
 6 |         google()
 7 |         jcenter()
 8 | 
 9 |     }
10 |     dependencies {
11 |         classpath 'com.android.tools.build:gradle:3.5.2'
12 |         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
13 |         // NOTE: Do not place your application dependencies here; they belong
14 |         // in the individual module build.gradle files
15 | 
16 |         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
17 |     }
18 | }
19 | 
20 | allprojects {
21 |     repositories {
22 |         google()
23 |         jcenter()
24 | 
25 |     }
26 | }
27 | 
28 | task clean(type: Delete) {
29 |     delete rootProject.buildDir
30 | }
31 | 


--------------------------------------------------------------------------------
/demo.gif:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/demo.gif


--------------------------------------------------------------------------------
/gradle.properties:
--------------------------------------------------------------------------------
 1 | # Project-wide Gradle settings.
 2 | # IDE (e.g. Android Studio) users:
 3 | # Gradle settings configured through the IDE *will override*
 4 | # any settings specified in this file.
 5 | # For more details on how to configure your build environment visit
 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html
 7 | # Specifies the JVM arguments used for the daemon process.
 8 | # The setting is particularly useful for tweaking memory settings.
 9 | org.gradle.jvmargs=-Xmx1536m
10 | # When configured, Gradle will run in incubating parallel mode.
11 | # This option should only be used with decoupled projects. More details, visit
12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
13 | # org.gradle.parallel=true
14 | # AndroidX package structure to make it clearer which packages are bundled with the
15 | # Android operating system, and which are packaged with your app's APK
16 | # https://developer.android.com/topic/libraries/support-library/androidx-rn
17 | #android.useAndroidX=true
18 | ## Automatically convert third-party libraries to use AndroidX
19 | #android.enableJetifier=true
20 | # Kotlin code style for this project: "official" or "obsolete":
21 | kotlin.code.style=official
22 | android.useAndroidX=true
23 | android.enableJetifier=true
24 | 


--------------------------------------------------------------------------------
/gradle/wrapper/gradle-wrapper.jar:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/gradle/wrapper/gradle-wrapper.jar


--------------------------------------------------------------------------------
/gradle/wrapper/gradle-wrapper.properties:
--------------------------------------------------------------------------------
1 | #Thu Nov 07 15:00:15 CST 2019
2 | distributionBase=GRADLE_USER_HOME
3 | distributionPath=wrapper/dists
4 | zipStoreBase=GRADLE_USER_HOME
5 | zipStorePath=wrapper/dists
6 | distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
7 | 


--------------------------------------------------------------------------------
/gradlew:
--------------------------------------------------------------------------------
  1 | #!/usr/bin/env sh
  2 | 
  3 | ##############################################################################
  4 | ##
  5 | ##  Gradle start up script for UN*X
  6 | ##
  7 | ##############################################################################
  8 | 
  9 | # Attempt to set APP_HOME
 10 | # Resolve links: $0 may be a link
 11 | PRG="$0"
 12 | # Need this for relative symlinks.
 13 | while [ -h "$PRG" ] ; do
 14 |     ls=`ls -ld "$PRG"`
 15 |     link=`expr "$ls" : '.*-> \(.*\)$'`
 16 |     if expr "$link" : '/.*' > /dev/null; then
 17 |         PRG="$link"
 18 |     else
 19 |         PRG=`dirname "$PRG"`"/$link"
 20 |     fi
 21 | done
 22 | SAVED="`pwd`"
 23 | cd "`dirname \"$PRG\"`/" >/dev/null
 24 | APP_HOME="`pwd -P`"
 25 | cd "$SAVED" >/dev/null
 26 | 
 27 | APP_NAME="Gradle"
 28 | APP_BASE_NAME=`basename "$0"`
 29 | 
 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 31 | DEFAULT_JVM_OPTS=""
 32 | 
 33 | # Use the maximum available, or set MAX_FD != -1 to use that value.
 34 | MAX_FD="maximum"
 35 | 
 36 | warn () {
 37 |     echo "$*"
 38 | }
 39 | 
 40 | die () {
 41 |     echo
 42 |     echo "$*"
 43 |     echo
 44 |     exit 1
 45 | }
 46 | 
 47 | # OS specific support (must be 'true' or 'false').
 48 | cygwin=false
 49 | msys=false
 50 | darwin=false
 51 | nonstop=false
 52 | case "`uname`" in
 53 |   CYGWIN* )
 54 |     cygwin=true
 55 |     ;;
 56 |   Darwin* )
 57 |     darwin=true
 58 |     ;;
 59 |   MINGW* )
 60 |     msys=true
 61 |     ;;
 62 |   NONSTOP* )
 63 |     nonstop=true
 64 |     ;;
 65 | esac
 66 | 
 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 68 | 
 69 | # Determine the Java command to use to start the JVM.
 70 | if [ -n "$JAVA_HOME" ] ; then
 71 |     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
 72 |         # IBM's JDK on AIX uses strange locations for the executables
 73 |         JAVACMD="$JAVA_HOME/jre/sh/java"
 74 |     else
 75 |         JAVACMD="$JAVA_HOME/bin/java"
 76 |     fi
 77 |     if [ ! -x "$JAVACMD" ] ; then
 78 |         die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
 79 | 
 80 | Please set the JAVA_HOME variable in your environment to match the
 81 | location of your Java installation."
 82 |     fi
 83 | else
 84 |     JAVACMD="java"
 85 |     which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 86 | 
 87 | Please set the JAVA_HOME variable in your environment to match the
 88 | location of your Java installation."
 89 | fi
 90 | 
 91 | # Increase the maximum file descriptors if we can.
 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
 93 |     MAX_FD_LIMIT=`ulimit -H -n`
 94 |     if [ $? -eq 0 ] ; then
 95 |         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
 96 |             MAX_FD="$MAX_FD_LIMIT"
 97 |         fi
 98 |         ulimit -n $MAX_FD
 99 |         if [ $? -ne 0 ] ; then
100 |             warn "Could not set maximum file descriptor limit: $MAX_FD"
101 |         fi
102 |     else
103 |         warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
104 |     fi
105 | fi
106 | 
107 | # For Darwin, add options to specify how the application appears in the dock
108 | if $darwin; then
109 |     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
110 | fi
111 | 
112 | # For Cygwin, switch paths to Windows format before running java
113 | if $cygwin ; then
114 |     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
115 |     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
116 |     JAVACMD=`cygpath --unix "$JAVACMD"`
117 | 
118 |     # We build the pattern for arguments to be converted via cygpath
119 |     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
120 |     SEP=""
121 |     for dir in $ROOTDIRSRAW ; do
122 |         ROOTDIRS="$ROOTDIRS$SEP$dir"
123 |         SEP="|"
124 |     done
125 |     OURCYGPATTERN="(^($ROOTDIRS))"
126 |     # Add a user-defined pattern to the cygpath arguments
127 |     if [ "$GRADLE_CYGPATTERN" != "" ] ; then
128 |         OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
129 |     fi
130 |     # Now convert the arguments - kludge to limit ourselves to /bin/sh
131 |     i=0
132 |     for arg in "$@" ; do
133 |         CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
134 |         CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
135 | 
136 |         if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
137 |             eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
138 |         else
139 |             eval `echo args$i`="\"$arg\""
140 |         fi
141 |         i=$((i+1))
142 |     done
143 |     case $i in
144 |         (0) set -- ;;
145 |         (1) set -- "$args0" ;;
146 |         (2) set -- "$args0" "$args1" ;;
147 |         (3) set -- "$args0" "$args1" "$args2" ;;
148 |         (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
149 |         (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
150 |         (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
151 |         (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
152 |         (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
153 |         (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
154 |     esac
155 | fi
156 | 
157 | # Escape application args
158 | save () {
159 |     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
160 |     echo " "
161 | }
162 | APP_ARGS=$(save "$@")
163 | 
164 | # Collect all arguments for the java command, following the shell quoting and substitution rules
165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
166 | 
167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
169 |   cd "$(dirname "$0")"
170 | fi
171 | 
172 | exec "$JAVACMD" "$@"
173 | 


--------------------------------------------------------------------------------
/gradlew.bat:
--------------------------------------------------------------------------------
 1 | @if "%DEBUG%" == "" @echo off
 2 | @rem ##########################################################################
 3 | @rem
 4 | @rem  Gradle startup script for Windows
 5 | @rem
 6 | @rem ##########################################################################
 7 | 
 8 | @rem Set local scope for the variables with windows NT shell
 9 | if "%OS%"=="Windows_NT" setlocal
10 | 
11 | set DIRNAME=%~dp0
12 | if "%DIRNAME%" == "" set DIRNAME=.
13 | set APP_BASE_NAME=%~n0
14 | set APP_HOME=%DIRNAME%
15 | 
16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
17 | set DEFAULT_JVM_OPTS=
18 | 
19 | @rem Find java.exe
20 | if defined JAVA_HOME goto findJavaFromJavaHome
21 | 
22 | set JAVA_EXE=java.exe
23 | %JAVA_EXE% -version >NUL 2>&1
24 | if "%ERRORLEVEL%" == "0" goto init
25 | 
26 | echo.
27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
28 | echo.
29 | echo Please set the JAVA_HOME variable in your environment to match the
30 | echo location of your Java installation.
31 | 
32 | goto fail
33 | 
34 | :findJavaFromJavaHome
35 | set JAVA_HOME=%JAVA_HOME:"=%
36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
37 | 
38 | if exist "%JAVA_EXE%" goto init
39 | 
40 | echo.
41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
42 | echo.
43 | echo Please set the JAVA_HOME variable in your environment to match the
44 | echo location of your Java installation.
45 | 
46 | goto fail
47 | 
48 | :init
49 | @rem Get command-line arguments, handling Windows variants
50 | 
51 | if not "%OS%" == "Windows_NT" goto win9xME_args
52 | 
53 | :win9xME_args
54 | @rem Slurp the command line arguments.
55 | set CMD_LINE_ARGS=
56 | set _SKIP=2
57 | 
58 | :win9xME_args_slurp
59 | if "x%~1" == "x" goto execute
60 | 
61 | set CMD_LINE_ARGS=%*
62 | 
63 | :execute
64 | @rem Setup the command line
65 | 
66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
67 | 
68 | @rem Execute Gradle
69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
70 | 
71 | :end
72 | @rem End local scope for the variables with windows NT shell
73 | if "%ERRORLEVEL%"=="0" goto mainEnd
74 | 
75 | :fail
76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
77 | rem the _cmd.exe /c_ return code!
78 | if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
79 | exit /b 1
80 | 
81 | :mainEnd
82 | if "%OS%"=="Windows_NT" endlocal
83 | 
84 | :omega
85 | 


--------------------------------------------------------------------------------
/settings.gradle:
--------------------------------------------------------------------------------
1 | include ':app', ':transformviewpager'
2 | rootProject.name='DynamicViewPager'
3 | 


--------------------------------------------------------------------------------
/transformviewpager/.gitignore:
--------------------------------------------------------------------------------
1 | /build
2 | 


--------------------------------------------------------------------------------
/transformviewpager/build.gradle:
--------------------------------------------------------------------------------
 1 | apply plugin: 'com.android.library'
 2 | apply plugin: 'kotlin-android'
 3 | apply plugin: 'kotlin-android-extensions'
 4 | 
 5 | apply plugin: 'com.github.dcendents.android-maven'
 6 | 
 7 | group='com.github.DanteAndroid'
 8 | 
 9 | android {
10 |     compileSdkVersion 29
11 |     buildToolsVersion "29.0.2"
12 | 
13 | 
14 |     defaultConfig {
15 |         minSdkVersion 19
16 |         targetSdkVersion 29
17 |         versionCode 1
18 |         versionName "1.0"
19 | 
20 |         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
21 |         consumerProguardFiles 'consumer-rules.pro'
22 |     }
23 | 
24 |     buildTypes {
25 |         release {
26 |             minifyEnabled false
27 |             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
28 |         }
29 |     }
30 | 
31 | }
32 | 
33 | dependencies {
34 |     implementation fileTree(dir: 'libs', include: ['*.jar'])
35 |     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
36 |     implementation 'androidx.appcompat:appcompat:1.1.0'
37 |     implementation 'androidx.core:core-ktx:1.1.0'
38 |     testImplementation 'junit:junit:4.12'
39 |     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
40 |     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
41 | }
42 | 


--------------------------------------------------------------------------------
/transformviewpager/consumer-rules.pro:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/DanteAndroid/TransformViewPager/011dadb2c83104b9fe5d047cf37e117c637647e9/transformviewpager/consumer-rules.pro


--------------------------------------------------------------------------------
/transformviewpager/proguard-rules.pro:
--------------------------------------------------------------------------------
 1 | # Add project specific ProGuard rules here.
 2 | # You can control the set of applied configuration files using the
 3 | # proguardFiles setting in build.gradle.
 4 | #
 5 | # For more details, see
 6 | #   http://developer.android.com/guide/developing/tools/proguard.html
 7 | 
 8 | # If your project uses WebView with JS, uncomment the following
 9 | # and specify the fully qualified class name to the JavaScript interface
10 | # class:
11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
12 | #   public *;
13 | #}
14 | 
15 | # Uncomment this to preserve the line number information for
16 | # debugging stack traces.
17 | #-keepattributes SourceFile,LineNumberTable
18 | 
19 | # If you keep the line number information, uncomment this to
20 | # hide the original source file name.
21 | #-renamesourcefileattribute SourceFile
22 | 


--------------------------------------------------------------------------------
/transformviewpager/src/androidTest/java/com/danteandroid/transformviewpager/ExampleInstrumentedTest.kt:
--------------------------------------------------------------------------------
 1 | package com.danteandroid.transformviewpager
 2 | 
 3 | import androidx.test.platform.app.InstrumentationRegistry
 4 | import androidx.test.ext.junit.runners.AndroidJUnit4
 5 | 
 6 | import org.junit.Test
 7 | import org.junit.runner.RunWith
 8 | 
 9 | import org.junit.Assert.*
10 | 
11 | /**
12 |  * Instrumented test, which will execute on an Android device.
13 |  *
14 |  * See [testing documentation](http://d.android.com/tools/testing).
15 |  */
16 | @RunWith(AndroidJUnit4::class)
17 | class ExampleInstrumentedTest {
18 |     @Test
19 |     fun useAppContext() {
20 |         // Context of the app under test.
21 |         val appContext = InstrumentationRegistry.getInstrumentation().targetContext
22 |         assertEquals("com.danteandroid.transformviewpager.test", appContext.packageName)
23 |     }
24 | }
25 | 


--------------------------------------------------------------------------------
/transformviewpager/src/main/AndroidManifest.xml:
--------------------------------------------------------------------------------
1 | <manifest xmlns:android="http://schemas.android.com/apk/res/android"
2 |     package="com.danteandroid.transformviewpager" />
3 | 


--------------------------------------------------------------------------------
/transformviewpager/src/main/java/com/danteandroid/transformviewpager/TransformViewPager.kt:
--------------------------------------------------------------------------------
 1 | package com.danteandroid.transformviewpager
 2 | 
 3 | import android.content.Context
 4 | import android.util.AttributeSet
 5 | import android.view.ViewGroup
 6 | import androidx.viewpager.widget.PagerAdapter
 7 | import androidx.viewpager.widget.ViewPager
 8 | 
 9 | /**
10 |  * @author Dante
11 |  * 2019-11-06
12 |  */
13 | class TransformViewPager : ViewPager {
14 | 
15 |     constructor(context: Context) : super(context)
16 |     constructor(context: Context, attrs: AttributeSet) : super(context, attrs)
17 | 
18 |     override fun setAdapter(adapter: PagerAdapter?) {
19 |         super.setAdapter(adapter)
20 |         check(adapter is TransformableAdapter) { "You should set adapter that implements `TransformableAdapter`" }
21 |         // 初始高度为第一张图片的实际显示高度
22 |         layoutParams.height = getRealHeight(0)
23 | 
24 |         addOnPageChangeListener(object : OnPageChangeListener {
25 |             private var lastOffset = 0
26 |             override fun onPageScrollStateChanged(position: Int) {
27 | 
28 |             }
29 | 
30 |             override fun onPageScrolled(
31 |                 position: Int,
32 |                 positionOffset: Float,
33 |                 positionOffsetPixels: Int
34 |             ) {
35 |                 val scrollToLeft = positionOffsetPixels - lastOffset < 0
36 |                 lastOffset = positionOffsetPixels
37 |                 transform(position, positionOffset, scrollToLeft)
38 |             }
39 | 
40 |             override fun onPageSelected(position: Int) {
41 | 
42 |             }
43 |         })
44 |     }
45 | 
46 |     // 注意，我要变形了！
47 |     private fun transform(position: Int, positionOffset: Float, isLeft: Boolean) {
48 |         if (positionOffset == 0f || positionOffset == 1f) return
49 |         // 如果向左划，position 为左边那个，故需要 +1
50 |         val currentPosition = if (isLeft) position + 1 else position
51 |         // 计算目标高度与当前高度的差值
52 |         // 然后乘以滑动offset（在屏幕宽度中）的比例
53 |         val diff = (getDestHeight(currentPosition, isLeft) -
54 |                 getRealHeight(currentPosition)) * if (isLeft) 1 - positionOffset else positionOffset
55 | 
56 |         layoutParams.height = getRealHeight(currentPosition) + diff.toInt()
57 |         requestLayout()
58 | 
59 |         println(
60 |             "onScrollChanged position $currentPosition, getRealHeight ${
61 |                 getRealHeight(
62 |                     position
63 |                 )
64 |             }, " + "diffHeight $diff, layoutParams.height ${layoutParams.height}"
65 |         )
66 |     }
67 | 
68 |     private fun getDestHeight(position: Int, scrollToLeft: Boolean): Int {
69 |         val nextImagePosition = if (scrollToLeft && position >= 1) {
70 |             position - 1
71 |         } else position + 1
72 | 
73 |         return getRealHeight(nextImagePosition)
74 |     }
75 | 
76 |     private fun getRealHeight(position: Int): Int {
77 |         val adapter = adapter as TransformableAdapter
78 |         val image = adapter.getTransformableItems()[position]
79 |         val width = getRealWidth(position)
80 |         return (image.getOrignalHeight() / image.getOriginalWidth() * width).toInt()
81 |     }
82 | 
83 |     private fun getRealWidth(position: Int): Int {
84 |         val adapter = adapter as TransformableAdapter
85 |         val image = adapter.getTransformableItems()[position]
86 |         return when {
87 |             layoutParams.width == ViewGroup.LayoutParams.WRAP_CONTENT -> {
88 |                 image.getOriginalWidth().toInt()
89 |             }
90 |             layoutParams.width == ViewGroup.LayoutParams.MATCH_PARENT -> {
91 |                 UiUtils.getScreenWidth(context)
92 |             }
93 |             else -> layoutParams.width
94 |         }
95 |     }
96 | }
97 | 


--------------------------------------------------------------------------------
/transformviewpager/src/main/java/com/danteandroid/transformviewpager/Transformable.kt:
--------------------------------------------------------------------------------
 1 | package com.danteandroid.transformviewpager
 2 | 
 3 | /**
 4 |  * @author Dante
 5 |  * 2019-11-11
 6 |  */
 7 | interface Transformable {
 8 | 
 9 |     fun getOriginalWidth(): Float
10 |     fun getOrignalHeight(): Float
11 | 
12 | }
13 | 
14 | interface TransformableAdapter {
15 | 
16 |     fun getTransformableItems(): List<Transformable>
17 | 
18 | }


--------------------------------------------------------------------------------
/transformviewpager/src/main/java/com/danteandroid/transformviewpager/UiUtils.kt:
--------------------------------------------------------------------------------
 1 | package com.danteandroid.transformviewpager
 2 | 
 3 | import android.content.Context
 4 | 
 5 | /**
 6 |  * @author Dante
 7 |  * 2019-11-07
 8 |  */
 9 | object UiUtils {
10 | 
11 |     fun getScreenWidth(context: Context): Int {
12 |         return context.getResources().getDisplayMetrics().widthPixels
13 |     }
14 | 
15 | }


--------------------------------------------------------------------------------
/transformviewpager/src/main/res/values/strings.xml:
--------------------------------------------------------------------------------
1 | <resources>
2 |     <string name="app_name">TransformViewPager</string>
3 | </resources>
4 | 


--------------------------------------------------------------------------------
/transformviewpager/src/test/java/com/danteandroid/transformviewpager/ExampleUnitTest.kt:
--------------------------------------------------------------------------------
 1 | package com.danteandroid.transformviewpager
 2 | 
 3 | import org.junit.Test
 4 | 
 5 | import org.junit.Assert.*
 6 | 
 7 | /**
 8 |  * Example local unit test, which will execute on the development machine (host).
 9 |  *
10 |  * See [testing documentation](http://d.android.com/tools/testing).
11 |  */
12 | class ExampleUnitTest {
13 |     @Test
14 |     fun addition_isCorrect() {
15 |         assertEquals(4, 2 + 2)
16 |     }
17 | }
18 | 


--------------------------------------------------------------------------------