├── app
    ├── .gitignore
    ├── src
    │   ├── main
    │   │   ├── res
    │   │   │   ├── values
    │   │   │   │   ├── strings.xml
    │   │   │   │   ├── dimens.xml
    │   │   │   │   ├── styles.xml
    │   │   │   │   └── colors.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
    │   │   │   ├── drawable-xhdpi
    │   │   │   │   ├── stretch_right.png
    │   │   │   │   └── stretch_bottom.png
    │   │   │   ├── mipmap-xxxhdpi
    │   │   │   │   ├── ic_launcher.png
    │   │   │   │   └── ic_launcher_round.png
    │   │   │   ├── mipmap-anydpi-v26
    │   │   │   │   ├── ic_launcher.xml
    │   │   │   │   └── ic_launcher_round.xml
    │   │   │   ├── drawable
    │   │   │   │   ├── bg_view_select.xml
    │   │   │   │   ├── bg_dottedline.xml
    │   │   │   │   └── ic_launcher_background.xml
    │   │   │   ├── layout
    │   │   │   │   └── activity_main.xml
    │   │   │   └── drawable-v24
    │   │   │   │   └── ic_launcher_foreground.xml
    │   │   ├── AndroidManifest.xml
    │   │   └── java
    │   │   │   └── com
    │   │   │       └── example
    │   │   │           └── dragscaleview
    │   │   │               ├── MainActivity.java
    │   │   │               └── view
    │   │   │                   └── DragRectView.java
    │   ├── test
    │   │   └── java
    │   │   │   └── com
    │   │   │       └── example
    │   │   │           └── dragscaleview
    │   │   │               └── ExampleUnitTest.java
    │   └── androidTest
    │   │   └── java
    │   │       └── com
    │   │           └── example
    │   │               └── dragscaleview
    │   │                   └── ExampleInstrumentedTest.java
    ├── proguard-rules.pro
    └── build.gradle
└── README.md


/app/.gitignore:
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1 | /build


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/app/src/main/res/values/strings.xml:
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1 | <resources>
2 |     <string name="app_name">DragScaleView</string>
3 | </resources>


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/app/src/main/res/mipmap-hdpi/ic_launcher.png:
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https://raw.githubusercontent.com/androideoe/DragScaleView/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher.png


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/app/src/main/res/mipmap-mdpi/ic_launcher.png:
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https://raw.githubusercontent.com/androideoe/DragScaleView/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher.png


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/app/src/main/res/mipmap-xhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/androideoe/DragScaleView/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher.png


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/app/src/main/res/mipmap-xxhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/androideoe/DragScaleView/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher.png


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/app/src/main/res/drawable-xhdpi/stretch_right.png:
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https://raw.githubusercontent.com/androideoe/DragScaleView/HEAD/app/src/main/res/drawable-xhdpi/stretch_right.png


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/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/androideoe/DragScaleView/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png


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/app/src/main/res/drawable-xhdpi/stretch_bottom.png:
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https://raw.githubusercontent.com/androideoe/DragScaleView/HEAD/app/src/main/res/drawable-xhdpi/stretch_bottom.png


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/app/src/main/res/mipmap-hdpi/ic_launcher_round.png:
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https://raw.githubusercontent.com/androideoe/DragScaleView/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher_round.png


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/app/src/main/res/mipmap-mdpi/ic_launcher_round.png:
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https://raw.githubusercontent.com/androideoe/DragScaleView/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher_round.png


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/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png:
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https://raw.githubusercontent.com/androideoe/DragScaleView/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png


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/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png:
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https://raw.githubusercontent.com/androideoe/DragScaleView/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png


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/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png:
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https://raw.githubusercontent.com/androideoe/DragScaleView/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png


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/README.md:
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1 | # DragScaleView
2 | 一个可以自由拖拽、边缘拉伸的view <br/>
3 | ![preview.gif](https://i.loli.net/2020/07/04/pvhqdNFxXM8O4TB.gif)<br/>
4 | 博客地址：[Android 自定义View 一个可以自由拖拽、边缘拉伸的view](https://blog.csdn.net/sinat_41268473/article/details/107138229)


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/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml:
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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-anydpi-v26/ic_launcher_round.xml:
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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/values/dimens.xml:
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1 | <?xml version="1.0" encoding="utf-8"?>
2 | <resources>
3 |     <!--虚线背景框大小-->
4 |     <dimen name="dottedline_stroke_width">1dp</dimen>
5 |     <dimen name="dottedline_stroke_height">2dp</dimen>
6 |     <dimen name="dottedline_dashGap_width">3dp</dimen>
7 |     <dimen name="dottedline_dashWidth">10dp</dimen>
8 | </resources>


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/app/src/main/res/drawable/bg_view_select.xml:
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1 | <?xml version="1.0" encoding="utf-8"?>
2 | <selector xmlns:android="http://schemas.android.com/apk/res/android">
3 |     <item android:state_selected="true" android:drawable="@drawable/bg_dottedline"/>
4 |     <item android:state_selected="false" android:drawable="@color/transparent"/>
5 |     <item android:drawable="@color/transparent"/>
6 | </selector>


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/app/src/main/res/values/styles.xml:
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 1 | <resources>
 2 |     <!-- Base application theme. -->
 3 |     <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
 4 |         <!-- Customize your theme here. -->
 5 |         <item name="colorPrimary">@color/colorPrimary</item>
 6 |         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
 7 |         <item name="colorAccent">@color/colorAccent</item>
 8 |     </style>
 9 | 
10 | </resources>


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/app/src/main/res/values/colors.xml:
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 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <resources>
 3 |     <color name="colorPrimary">#6200EE</color>
 4 |     <color name="colorPrimaryDark">#3700B3</color>
 5 |     <color name="colorAccent">#03DAC5</color>
 6 | 
 7 |     <!--透明背景-->
 8 |     <color name="transparent">#00000000</color>
 9 |     <!--虚线边框背景颜色-->
10 |     <color name="dottedline_bg">#0497ff</color>
11 |     <!--画板背景颜色-->
12 |     <color name="draw_view_bg">#FFF4F5F6</color>
13 | </resources>
14 | 


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/app/src/main/res/drawable/bg_dottedline.xml:
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 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <shape xmlns:android="http://schemas.android.com/apk/res/android"
 3 |     android:shape="rectangle">
 4 |     <stroke
 5 |         android:width="@dimen/dottedline_stroke_width"
 6 |         android:color="@color/dottedline_bg"
 7 |         android:dashWidth="@dimen/dottedline_dashWidth"
 8 |         android:dashGap="@dimen/dottedline_dashGap_width" />
 9 |     <size android:height="@dimen/dottedline_stroke_height" />
10 | </shape>


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/app/src/test/java/com/example/dragscaleview/ExampleUnitTest.java:
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 1 | package com.example.dragscaleview;
 2 | 
 3 | import org.junit.Test;
 4 | 
 5 | import static org.junit.Assert.*;
 6 | 
 7 | /**
 8 |  * Example local unit test, which will execute on the development machine (host).
 9 |  *
10 |  * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
11 |  */
12 | public class ExampleUnitTest {
13 |     @Test
14 |     public void addition_isCorrect() {
15 |         assertEquals(4, 2 + 2);
16 |     }
17 | }


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/app/src/main/AndroidManifest.xml:
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 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3 |     package="com.example.dragscaleview">
 4 | 
 5 |     <application
 6 |         android:allowBackup="true"
 7 |         android:icon="@mipmap/ic_launcher"
 8 |         android:label="@string/app_name"
 9 |         android:roundIcon="@mipmap/ic_launcher_round"
10 |         android:supportsRtl="true"
11 |         android:theme="@style/AppTheme">
12 |         <activity android:name=".MainActivity">
13 |             <intent-filter>
14 |                 <action android:name="android.intent.action.MAIN" />
15 | 
16 |                 <category android:name="android.intent.category.LAUNCHER" />
17 |             </intent-filter>
18 |         </activity>
19 |     </application>
20 | 
21 | </manifest>


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/app/proguard-rules.pro:
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 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


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/app/src/androidTest/java/com/example/dragscaleview/ExampleInstrumentedTest.java:
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 1 | package com.example.dragscaleview;
 2 | 
 3 | import android.content.Context;
 4 | 
 5 | import androidx.test.platform.app.InstrumentationRegistry;
 6 | import androidx.test.ext.junit.runners.AndroidJUnit4;
 7 | 
 8 | import org.junit.Test;
 9 | import org.junit.runner.RunWith;
10 | 
11 | import static org.junit.Assert.*;
12 | 
13 | /**
14 |  * Instrumented test, which will execute on an Android device.
15 |  *
16 |  * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
17 |  */
18 | @RunWith(AndroidJUnit4.class)
19 | public class ExampleInstrumentedTest {
20 |     @Test
21 |     public void useAppContext() {
22 |         // Context of the app under test.
23 |         Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
24 |         assertEquals("com.example.dragscaleview", appContext.getPackageName());
25 |     }
26 | }


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/app/build.gradle:
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 1 | apply plugin: 'com.android.application'
 2 | 
 3 | android {
 4 |     compileSdkVersion 29
 5 |     buildToolsVersion "29.0.3"
 6 | 
 7 |     defaultConfig {
 8 |         applicationId "com.example.dragscaleview"
 9 |         minSdkVersion 16
10 |         targetSdkVersion 29
11 |         versionCode 1
12 |         versionName "1.0"
13 | 
14 |         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
15 |     }
16 | 
17 |     buildTypes {
18 |         release {
19 |             minifyEnabled false
20 |             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
21 |         }
22 |     }
23 | }
24 | 
25 | dependencies {
26 |     implementation fileTree(dir: "libs", include: ["*.jar"])
27 |     implementation 'androidx.appcompat:appcompat:1.2.0'
28 |     implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
29 |     testImplementation 'junit:junit:4.12'
30 |     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
31 |     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
32 | 
33 | }


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/app/src/main/res/layout/activity_main.xml:
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 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <RelativeLayout 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 |     tools:context=".MainActivity">
 8 | 
 9 |     <Button
10 |         android:id="@+id/create"
11 |         android:layout_width="wrap_content"
12 |         android:layout_height="wrap_content"
13 |         android:layout_centerInParent="true"
14 |         android:text="创建" />
15 | 
16 |     <RelativeLayout
17 |         android:id="@+id/draw_view"
18 |         android:layout_width="match_parent"
19 |         android:layout_height="400dp"
20 |         android:layout_above="@id/create"
21 |         android:background="@color/draw_view_bg">
22 | 
23 |         <com.example.dragscaleview.view.DragRectView
24 |             android:id="@+id/drag_rect_view"
25 |             android:layout_width="wrap_content"
26 |             android:layout_height="wrap_content">
27 | 
28 |         </com.example.dragscaleview.view.DragRectView>
29 |     </RelativeLayout>
30 | 
31 | </RelativeLayout>


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/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 android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
 8 |         <aapt:attr name="android:fillColor">
 9 |             <gradient
10 |                 android:endX="85.84757"
11 |                 android:endY="92.4963"
12 |                 android:startX="42.9492"
13 |                 android:startY="49.59793"
14 |                 android:type="linear">
15 |                 <item
16 |                     android:color="#44000000"
17 |                     android:offset="0.0" />
18 |                 <item
19 |                     android:color="#00000000"
20 |                     android:offset="1.0" />
21 |             </gradient>
22 |         </aapt:attr>
23 |     </path>
24 |     <path
25 |         android:fillColor="#FFFFFF"
26 |         android:fillType="nonZero"
27 |         android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
28 |         android:strokeWidth="1"
29 |         android:strokeColor="#00000000" />
30 | </vector>


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/app/src/main/java/com/example/dragscaleview/MainActivity.java:
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 1 | package com.example.dragscaleview;
 2 | 
 3 | import android.os.Bundle;
 4 | import android.view.View;
 5 | import android.widget.RelativeLayout;
 6 | 
 7 | import com.example.dragscaleview.view.DragRectView;
 8 | 
 9 | import androidx.appcompat.app.AppCompatActivity;
10 | 
11 | public class MainActivity extends AppCompatActivity {
12 |     private RelativeLayout drawLayout;
13 |     private DragRectView dragRectView;
14 | 
15 |     @Override
16 |     protected void onCreate(Bundle savedInstanceState) {
17 |         super.onCreate(savedInstanceState);
18 |         setContentView(R.layout.activity_main);
19 |         drawLayout = findViewById(R.id.draw_view);
20 |         dragRectView = findViewById(R.id.drag_rect_view);
21 | 
22 |         RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(200, 200);
23 |         lp.setMargins(50, 50, 0, 0);
24 |         dragRectView.setLayoutParams(lp);
25 |         dragRectView.setClickable(true);
26 |         dragRectView.setSelected(true);
27 |         dragRectView.setMyTouchListener(new DragRectView.OnMyTouchListener() {
28 |             @Override
29 |             public void onClick() {
30 |                 dragRectView.setSelected(true);
31 |             }
32 |         });
33 | 
34 |         drawLayout.setOnClickListener(new View.OnClickListener() {
35 |             @Override
36 |             public void onClick(View v) {
37 |                 dragRectView.setSelected(false);
38 |             }
39 |         });
40 | 
41 | 
42 | //        findViewById(R.id.create).setOnClickListener(new View.OnClickListener() {
43 | //            @Override
44 | //            public void onClick(View v) {
45 | //                DragRectView dragRectView = new DragRectView(MainActivity.this);
46 | //                RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(200, 200);
47 | //                lp.setMargins(50, 50, 0, 0);
48 | //                dragRectView.setLayoutParams(lp);
49 | //                dragRectView.setClickable(true);
50 | //                dragRectView.setSelected(true);
51 | //                drawLayout.addView(dragRectView);
52 | //
53 | //            }
54 | //        });
55 | 
56 | 
57 |     }
58 | }


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/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="#3DDC84"
  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 | 


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/app/src/main/java/com/example/dragscaleview/view/DragRectView.java:
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  1 | package com.example.dragscaleview.view;
  2 | 
  3 | import android.content.Context;
  4 | import android.graphics.Bitmap;
  5 | import android.graphics.BitmapFactory;
  6 | import android.graphics.Canvas;
  7 | import android.graphics.Paint;
  8 | import android.graphics.Rect;
  9 | import android.util.AttributeSet;
 10 | import android.util.Log;
 11 | import android.view.MotionEvent;
 12 | import android.view.View;
 13 | import android.view.ViewTreeObserver;
 14 | import android.widget.RelativeLayout;
 15 | 
 16 | import com.example.dragscaleview.R;
 17 | 
 18 | import androidx.annotation.Nullable;
 19 | import androidx.core.app.NotificationManagerCompat;
 20 | import androidx.core.view.ViewCompat;
 21 | 
 22 | import static android.widget.RelativeLayout.ALIGN_PARENT_BOTTOM;
 23 | import static android.widget.RelativeLayout.ALIGN_PARENT_RIGHT;
 24 | import static android.widget.RelativeLayout.ALIGN_PARENT_TOP;
 25 | import static android.widget.RelativeLayout.CENTER_HORIZONTAL;
 26 | import static android.widget.RelativeLayout.CENTER_IN_PARENT;
 27 | import static android.widget.RelativeLayout.CENTER_VERTICAL;
 28 | 
 29 | /**
 30 |  * Created by zero_android on 2020/6/29.
 31 |  * <p>
 32 |  * 一个可以自由拖拽、拉伸的view
 33 |  */
 34 | public class DragRectView extends View implements View.OnTouchListener {
 35 |     private static final String TAG = "DragRectView";
 36 |     // view移动方向
 37 |     private static final int LEFT_TOP = 0x17;
 38 |     private static final int RIGHT_TOP = 0x18;
 39 |     private static final int LEFT_BOTTOM = 0x19;
 40 |     private static final int RIGHT_BOTTOM = 0x20;
 41 |     private static final int TOP = 0x21;
 42 |     private static final int LEFT = 0x22;
 43 |     private static final int BOTTOM = 0x23;
 44 |     private static final int RIGHT = 0x24;
 45 |     private static final int CENTER = 0x25;
 46 | 
 47 |     private int offset = 40;
 48 | 
 49 | 
 50 |     private int dbottom;
 51 |     private int dleft;
 52 |     private int downx;
 53 |     private int downy;
 54 |     private int dragDirection;
 55 |     private int dright;
 56 |     private int dtop;
 57 |     private int starh;
 58 |     private int starw;
 59 |     private int endh;
 60 |     private int endw;
 61 |     private int lastX;
 62 |     private int lastY;
 63 | 
 64 |     // view的宽、高初始化
 65 |     private int width = 0;
 66 |     private int height = 0;
 67 |     // 线条的宽度
 68 |     private int mLineSize = 3;
 69 |     // 图片大小
 70 |     private int mRectSize = 50;
 71 |     private Paint mPaint;
 72 |     private Rect mRect;
 73 |     private Paint.Style mStyle;
 74 |     private RelativeLayout.LayoutParams mlp;
 75 |     // 拉伸的view
 76 |     private Bitmap mRightBmp;
 77 |     private Rect mRightRect;
 78 |     private Bitmap mBottomBmp;
 79 |     private Rect mBottomRect;
 80 | //    private boolean isMove = false;
 81 | 
 82 |     private OnMyTouchListener myTouchListener;
 83 | 
 84 |     public DragRectView(Context context) {
 85 |         this(context, null);
 86 |     }
 87 | 
 88 |     public DragRectView(Context context, @Nullable AttributeSet attrs) {
 89 |         this(context, attrs, 0);
 90 |     }
 91 | 
 92 |     public DragRectView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
 93 |         super(context, attrs, defStyleAttr);
 94 |         init();
 95 | 
 96 |     }
 97 | 
 98 |     /**
 99 |      * 初始化view
100 |      */
101 |     private void init() {
102 |         setBackground(getResources().getDrawable(R.drawable.bg_view_select));
103 |         setOnTouchListener(this);
104 | 
105 |         mPaint = new Paint();
106 |         mStyle = Paint.Style.STROKE;
107 |         mPaint.setColor(ViewCompat.MEASURED_STATE_MASK);
108 |         mPaint.setAntiAlias(true);
109 | 
110 |         getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
111 |             public void onGlobalLayout() {
112 |                 width = 200;
113 |                 height = 200;
114 |                 mlp = (RelativeLayout.LayoutParams) getLayoutParams();
115 |                 invalidate();
116 |                 getViewTreeObserver().removeOnGlobalLayoutListener(this);
117 |             }
118 |         });
119 |         mRightBmp = BitmapFactory.decodeResource(getResources(), R.drawable.stretch_right);
120 |         mBottomBmp = BitmapFactory.decodeResource(getResources(), R.drawable.stretch_bottom);
121 |         mRightRect = new Rect();
122 |         mBottomRect = new Rect();
123 |         mRect = new Rect();
124 | 
125 |     }
126 | 
127 |     public interface OnMyTouchListener {
128 |         void onClick();
129 |     }
130 | 
131 |     public void setMyTouchListener(OnMyTouchListener myTouchListener) {
132 |         this.myTouchListener = myTouchListener;
133 |     }
134 | 
135 |     @Override
136 |     public boolean onTouch(View v, MotionEvent event) {
137 |         v.getParent().requestDisallowInterceptTouchEvent(true);
138 |         if (myTouchListener != null) {
139 |             myTouchListener.onClick();
140 |         }
141 |         int action = event.getAction();
142 |         if (action == MotionEvent.ACTION_DOWN) {
143 |             dleft = v.getLeft();
144 |             dright = v.getRight();
145 |             dtop = v.getTop();
146 |             dbottom = v.getBottom();
147 |             downx = (int) event.getRawX();
148 |             downy = (int) event.getRawY();
149 |             lastX = (int) event.getRawX();
150 |             lastY = (int) event.getRawY();
151 |             starw = width;
152 |             starh = height;
153 |             dragDirection = getDirection(v, (int) event.getX(), (int) event.getY());
154 |         }
155 |         handleDrag(v, event, action);
156 |         invalidate();
157 |         return false;
158 |     }
159 | 
160 |     @Override
161 |     protected void onDraw(Canvas canvas) {
162 |         super.onDraw(canvas);
163 |         canvas.save();
164 |         mPaint.setStyle(mStyle);
165 |         mPaint.setStrokeWidth((float) mLineSize);
166 |         mRect.set(15, 15, width, height);
167 |         canvas.drawRect(mRect, mPaint);
168 |         mlp.width = (int) (width + 20.0f);
169 |         mlp.height = (int) (height + 20.0f);
170 |         setLayoutParams(mlp);
171 |         canvas.restore();
172 |         if (isSelected()) {
173 |             mRightRect.set(getWidth() - mRectSize, (getHeight() / 2) - (mRectSize / 2), getWidth(), (getHeight() / 2) + (mRectSize / 2));
174 |             canvas.drawBitmap(mRightBmp, null, mRightRect, this.mPaint);
175 |             mBottomRect.set((getWidth() / 2) - (mRectSize / 2), getHeight() - mRectSize, (getWidth() / 2) + (mRectSize / 2), getHeight());
176 |             canvas.drawBitmap(mBottomBmp, null, mBottomRect, this.mPaint);
177 |         }
178 |     }
179 | 
180 | 
181 |     private void handleDrag(View v, MotionEvent event, int action) {
182 |         switch (action) {
183 |             case MotionEvent.ACTION_UP:
184 |                 endw = width;
185 |                 endh = height;
186 |                 if (dragDirection == CENTER) {
187 |                     if (Math.abs(lastX - downx) > 10 || Math.abs(lastY - downy) > 10) {
188 |                         move(v);
189 |                     }
190 |                 } else {
191 |                     if (Math.abs(endw - starw) > 5 || Math.abs(endh - starh) > 5) {
192 |                         handleSizeChanged(v);
193 |                     }
194 |                 }
195 |                 dragDirection = 0;
196 |                 break;
197 |             case MotionEvent.ACTION_MOVE:
198 |                 int dx = ((int) event.getRawX()) - lastX;
199 |                 int dy = ((int) event.getRawY()) - lastY;
200 |                 switch (dragDirection) {
201 |                     case BOTTOM:
202 |                         bottom(v, dy);
203 |                         break;
204 |                     case RIGHT:
205 |                         right(v, dx);
206 |                         break;
207 |                     case CENTER:
208 |                         center(v, dx, dy);
209 |                         break;
210 | //                    default:
211 | //                        break;
212 |                 }
213 |                 lastX = (int) event.getRawX();
214 |                 lastY = (int) event.getRawY();
215 |                 break;
216 |             default:
217 |                 break;
218 |         }
219 |     }
220 | 
221 |     /**
222 |      * 处理view 大小变化
223 |      *
224 |      * @param v
225 |      */
226 |     private void handleSizeChanged(View v) {
227 |         Log.d(TAG, "...handleSizeChanged ...");
228 |         mlp = (RelativeLayout.LayoutParams) v.getLayoutParams();
229 |         mlp.width = endw + mRectSize / 2;
230 |         mlp.height = endh + mRectSize / 2;
231 |         setHeights((float) endh);
232 |         setWidths((float) endw);
233 |         v.setLayoutParams(mlp);
234 |     }
235 | 
236 |     /**
237 |      * 处理view move
238 |      *
239 |      * @param v
240 |      */
241 |     private void move(View v) {
242 |         Log.d(TAG, "...move ...");
243 |         mlp = (RelativeLayout.LayoutParams) v.getLayoutParams();
244 |         cleanParams(mlp);
245 |         mlp.setMargins(v.getLeft(), v.getTop(), NotificationManagerCompat.IMPORTANCE_UNSPECIFIED,
246 |                 NotificationManagerCompat.IMPORTANCE_UNSPECIFIED);
247 |         setLayoutParams(mlp);
248 |     }
249 | 
250 |     /**
251 |      * 通过坐标和移动距离，确定移动方向
252 |      *
253 |      * @param v
254 |      * @param x
255 |      * @param y
256 |      * @return
257 |      */
258 |     private int getDirection(View v, int x, int y) {
259 |         int left = v.getLeft();
260 |         int right = v.getRight();
261 |         int bottom = v.getBottom();
262 |         int top = v.getTop();
263 |         if (x < offset && y < offset) {
264 |             return LEFT_TOP;
265 |         }
266 |         if (y < offset && (right - left) - x < offset) {
267 |             return RIGHT_TOP;
268 |         }
269 |         if (x < offset && (bottom - top) - y < offset) {
270 |             return LEFT_BOTTOM;
271 |         }
272 |         if ((right - left) - x < offset && (bottom - top) - y < offset) {
273 |             return RIGHT_BOTTOM;
274 |         }
275 |         if (x < offset) {
276 |             return LEFT;
277 |         }
278 |         if (y < offset) {
279 |             return TOP;
280 |         }
281 |         if ((right - left) - x < offset) {
282 |             return RIGHT;
283 |         }
284 |         if ((bottom - top) - y < offset) {
285 |             return BOTTOM;
286 |         }
287 |         return CENTER;
288 |     }
289 | 
290 |     public void cleanParams(RelativeLayout.LayoutParams lp) {
291 |         lp.addRule(CENTER_IN_PARENT, 0);
292 |         lp.addRule(ALIGN_PARENT_RIGHT, 0);
293 |         lp.addRule(ALIGN_PARENT_BOTTOM, 0);
294 |         lp.addRule(ALIGN_PARENT_TOP, 0);
295 |         lp.addRule(CENTER_VERTICAL, 0);
296 |         lp.addRule(CENTER_HORIZONTAL, 0);
297 |     }
298 | 
299 |     public void setHeights(float height) {
300 |         this.height = (int) (0.5f + height);
301 |     }
302 | 
303 |     public void setWidths(float width) {
304 |         this.width = (int) (0.5f + width);
305 |     }
306 | 
307 |     private void bottom(View v, int dy) {
308 |         Log.d(TAG, "...bottom ..." + dy);
309 |         height += dy;
310 |         if (height < 100) {
311 |             height = 100;
312 |         }
313 |     }
314 | 
315 |     private void right(View v, int dx) {
316 |         Log.d(TAG, "...right ..." + dx);
317 |         width += dx;
318 |         if (width < 100) {
319 |             width = 100;
320 |         }
321 |     }
322 | 
323 |     private void center(View v, int dx, int dy) {
324 |         Log.d(TAG, "...center ..." + dx + "/" + dy);
325 |         int left = v.getLeft() + dx;
326 |         int top = v.getTop() + dy;
327 |         int right = v.getRight() + dx;
328 |         int bottom = v.getBottom() + dy;
329 |         cleanParams(mlp);
330 |         mlp.setMargins(left, top, NotificationManagerCompat.IMPORTANCE_UNSPECIFIED, NotificationManagerCompat.IMPORTANCE_UNSPECIFIED);
331 |         setLayoutParams(mlp);
332 |     }
333 | 
334 | 
335 | }
336 | 


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