├── .idea
├── .name
├── copyright
│ └── profiles_settings.xml
├── encodings.xml
├── vcs.xml
├── modules.xml
├── runConfigurations.xml
├── compiler.xml
├── gradle.xml
└── misc.xml
├── app
├── .gitignore
├── src
│ ├── main
│ │ ├── res
│ │ │ ├── mipmap-xxhdpi
│ │ │ │ ├── lufy.png
│ │ │ │ ├── alipay.png
│ │ │ │ ├── veins.png
│ │ │ │ ├── android.png
│ │ │ │ ├── evernote.png
│ │ │ │ ├── snapchat.png
│ │ │ │ └── ic_launcher.png
│ │ │ ├── mipmap-hdpi
│ │ │ │ └── ic_launcher.png
│ │ │ ├── mipmap-mdpi
│ │ │ │ └── ic_launcher.png
│ │ │ ├── mipmap-xhdpi
│ │ │ │ └── ic_launcher.png
│ │ │ ├── mipmap-xxxhdpi
│ │ │ │ └── ic_launcher.png
│ │ │ ├── values
│ │ │ │ ├── strings.xml
│ │ │ │ ├── colors.xml
│ │ │ │ ├── dimens.xml
│ │ │ │ ├── custom_attrs.xml
│ │ │ │ └── styles.xml
│ │ │ ├── values-w820dp
│ │ │ │ └── dimens.xml
│ │ │ ├── layout
│ │ │ │ ├── activity_canvas.xml
│ │ │ │ ├── activity_path.xml
│ │ │ │ ├── activity_porter_duff_xfermode.xml
│ │ │ │ ├── activity_custom_view.xml
│ │ │ │ ├── activity_shader.xml
│ │ │ │ ├── activity_custom_view_group.xml
│ │ │ │ ├── activity_simple_text_view.xml
│ │ │ │ ├── activity_main.xml
│ │ │ │ ├── activity_basic_custom.xml
│ │ │ │ └── activity_scratch_demo.xml
│ │ │ └── menu
│ │ │ │ └── shader.xml
│ │ ├── java
│ │ │ └── com
│ │ │ │ └── clock
│ │ │ │ └── view
│ │ │ │ ├── activity
│ │ │ │ ├── PathActivity.java
│ │ │ │ ├── CanvasActivity.java
│ │ │ │ ├── CustomViewActivity.java
│ │ │ │ ├── CustomViewGroupActivity.java
│ │ │ │ ├── SimpleTextViewActivity.java
│ │ │ │ ├── PorterDuffXfermodeActivity.java
│ │ │ │ ├── BasicCustomActivity.java
│ │ │ │ ├── ScratchDemoActivity.java
│ │ │ │ └── ShaderActivity.java
│ │ │ │ ├── MainActivity.java
│ │ │ │ └── basic
│ │ │ │ ├── SimpleTextView.java
│ │ │ │ ├── PathView.java
│ │ │ │ ├── CustomViewGroup.java
│ │ │ │ ├── SimpleXfermodeView.java
│ │ │ │ ├── CustomView.java
│ │ │ │ └── SimpleCanvasView.java
│ │ └── AndroidManifest.xml
│ ├── test
│ │ └── java
│ │ │ └── com
│ │ │ └── clock
│ │ │ └── view
│ │ │ └── ExampleUnitTest.java
│ └── androidTest
│ │ └── java
│ │ └── com
│ │ └── clock
│ │ └── view
│ │ └── ApplicationTest.java
├── proguard-rules.pro
└── build.gradle
├── Scratch
├── .gitignore
├── src
│ ├── main
│ │ ├── res
│ │ │ └── values
│ │ │ │ ├── strings.xml
│ │ │ │ └── scratch.xml
│ │ ├── AndroidManifest.xml
│ │ └── java
│ │ │ └── com
│ │ │ └── clock
│ │ │ └── scratch
│ │ │ └── ScratchView.java
│ ├── test
│ │ └── java
│ │ │ └── com
│ │ │ └── clock
│ │ │ └── scratch
│ │ │ └── ExampleUnitTest.java
│ └── androidTest
│ │ └── java
│ │ └── com
│ │ └── clock
│ │ └── scratch
│ │ └── ApplicationTest.java
├── proguard-rules.pro
└── build.gradle
├── settings.gradle
├── screen
└── scratch-demo-screen.gif
├── gradle
└── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── .gitignore
├── gradle.properties
├── gradlew.bat
├── README.md
└── gradlew
/.idea/.name:
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1 | AndroidCustomView
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/app/.gitignore:
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1 | /build
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/Scratch/.gitignore:
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1 | /build
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/settings.gradle:
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1 | include ':app', ':Scratch'
2 |
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/screen/scratch-demo-screen.gif:
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/.idea/copyright/profiles_settings.xml:
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/Scratch/src/main/res/values/strings.xml:
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/gradle/wrapper/gradle-wrapper.jar:
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/app/src/main/res/mipmap-xxhdpi/lufy.png:
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https://raw.githubusercontent.com/D-clock/ScratchView/HEAD/app/src/main/res/mipmap-xxhdpi/lufy.png
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/app/src/main/res/mipmap-xxhdpi/alipay.png:
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https://raw.githubusercontent.com/D-clock/ScratchView/HEAD/app/src/main/res/mipmap-xxhdpi/alipay.png
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/app/src/main/res/mipmap-xxhdpi/veins.png:
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https://raw.githubusercontent.com/D-clock/ScratchView/HEAD/app/src/main/res/mipmap-xxhdpi/veins.png
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/.gitignore:
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1 | *.iml
2 | .gradle
3 | /local.properties
4 | /.idea/workspace.xml
5 | /.idea/libraries
6 | .DS_Store
7 | /build
8 | /captures
9 |
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/app/src/main/res/mipmap-hdpi/ic_launcher.png:
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https://raw.githubusercontent.com/D-clock/ScratchView/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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/app/src/main/res/mipmap-xxhdpi/android.png:
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https://raw.githubusercontent.com/D-clock/ScratchView/HEAD/app/src/main/res/mipmap-xxhdpi/android.png
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/app/src/main/res/mipmap-xxhdpi/evernote.png:
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/app/src/main/res/mipmap-xxhdpi/snapchat.png:
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https://raw.githubusercontent.com/D-clock/ScratchView/HEAD/app/src/main/res/mipmap-xxhdpi/snapchat.png
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/app/src/main/res/mipmap-xhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/D-clock/ScratchView/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/D-clock/ScratchView/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
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/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png:
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/.idea/encodings.xml:
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/app/src/main/res/values/strings.xml:
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2 | AndroidCustomView
3 | Scratch Percent: %1$s
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/app/src/main/res/values/colors.xml:
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3 | #3F51B5
4 | #303F9F
5 | #FF4081
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/app/src/main/res/values/dimens.xml:
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4 | 16dp
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/gradle/wrapper/gradle-wrapper.properties:
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1 | #Wed Aug 31 21:04:01 CST 2016
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-2.14.1-all.zip
7 |
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/app/src/main/res/values-w820dp/dimens.xml:
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/app/src/test/java/com/clock/view/ExampleUnitTest.java:
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1 | package com.clock.view;
2 |
3 | import org.junit.Test;
4 |
5 | import static org.junit.Assert.*;
6 |
7 | /**
8 | * To work on unit tests, switch the Test Artifact in the Build Variants view.
9 | */
10 | public class ExampleUnitTest {
11 | @Test
12 | public void addition_isCorrect() throws Exception {
13 | assertEquals(4, 2 + 2);
14 | }
15 | }
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/Scratch/src/test/java/com/clock/scratch/ExampleUnitTest.java:
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1 | package com.clock.scratch;
2 |
3 | import org.junit.Test;
4 |
5 | import static org.junit.Assert.*;
6 |
7 | /**
8 | * To work on unit tests, switch the Test Artifact in the Build Variants view.
9 | */
10 | public class ExampleUnitTest {
11 | @Test
12 | public void addition_isCorrect() throws Exception {
13 | assertEquals(4, 2 + 2);
14 | }
15 | }
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/app/src/androidTest/java/com/clock/view/ApplicationTest.java:
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1 | package com.clock.view;
2 |
3 | import android.app.Application;
4 | import android.test.ApplicationTestCase;
5 |
6 | /**
7 | * Testing Fundamentals
8 | */
9 | public class ApplicationTest extends ApplicationTestCase {
10 | public ApplicationTest() {
11 | super(Application.class);
12 | }
13 | }
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/app/src/main/res/values/styles.xml:
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/Scratch/src/androidTest/java/com/clock/scratch/ApplicationTest.java:
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1 | package com.clock.scratch;
2 |
3 | import android.app.Application;
4 | import android.test.ApplicationTestCase;
5 |
6 | /**
7 | * Testing Fundamentals
8 | */
9 | public class ApplicationTest extends ApplicationTestCase {
10 | public ApplicationTest() {
11 | super(Application.class);
12 | }
13 | }
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/Scratch/src/main/res/values/scratch.xml:
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/app/src/main/res/layout/activity_canvas.xml:
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/app/src/main/res/layout/activity_path.xml:
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/app/src/main/java/com/clock/view/activity/PathActivity.java:
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1 | package com.clock.view.activity;
2 |
3 | import android.support.v7.app.AppCompatActivity;
4 | import android.os.Bundle;
5 |
6 | import com.clock.view.R;
7 |
8 | /**
9 | * Path Demo Code
10 | *
11 | * @author Clock
12 | */
13 | public class PathActivity extends AppCompatActivity {
14 |
15 | @Override
16 | protected void onCreate(Bundle savedInstanceState) {
17 | super.onCreate(savedInstanceState);
18 | setContentView(R.layout.activity_path);
19 | }
20 | }
21 |
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/app/src/main/res/layout/activity_porter_duff_xfermode.xml:
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/app/src/main/java/com/clock/view/activity/CanvasActivity.java:
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1 | package com.clock.view.activity;
2 |
3 | import android.support.v7.app.AppCompatActivity;
4 | import android.os.Bundle;
5 |
6 | import com.clock.view.R;
7 |
8 | /**
9 | * Canvas 绘画练习代码
10 | *
11 | * @author Clock
12 | * @since 2016-08-03
13 | */
14 | public class CanvasActivity extends AppCompatActivity {
15 |
16 | @Override
17 | protected void onCreate(Bundle savedInstanceState) {
18 | super.onCreate(savedInstanceState);
19 | setContentView(R.layout.activity_canvas);
20 | }
21 | }
22 |
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/app/src/main/java/com/clock/view/activity/CustomViewActivity.java:
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1 | package com.clock.view.activity;
2 |
3 | import android.support.v7.app.AppCompatActivity;
4 | import android.os.Bundle;
5 |
6 | import com.clock.view.R;
7 |
8 | /**
9 | * Basic Custom View Training Code
10 | *
11 | * @author Clock
12 | */
13 | public class CustomViewActivity extends AppCompatActivity {
14 |
15 | @Override
16 | protected void onCreate(Bundle savedInstanceState) {
17 | super.onCreate(savedInstanceState);
18 | setContentView(R.layout.activity_custom_view);
19 | }
20 | }
21 |
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/app/src/main/java/com/clock/view/activity/CustomViewGroupActivity.java:
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1 | package com.clock.view.activity;
2 |
3 | import android.support.v7.app.AppCompatActivity;
4 | import android.os.Bundle;
5 |
6 | import com.clock.view.R;
7 |
8 |
9 | /**
10 | * Basic Custom ViewGroup Training Code
11 | *
12 | * @author Clock
13 | */
14 | public class CustomViewGroupActivity extends AppCompatActivity {
15 |
16 | @Override
17 | protected void onCreate(Bundle savedInstanceState) {
18 | super.onCreate(savedInstanceState);
19 | setContentView(R.layout.activity_custom_view_group);
20 | }
21 | }
22 |
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/app/src/main/java/com/clock/view/activity/SimpleTextViewActivity.java:
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1 | package com.clock.view.activity;
2 |
3 | import android.support.v7.app.AppCompatActivity;
4 | import android.os.Bundle;
5 |
6 | import com.clock.view.R;
7 |
8 | /**
9 | * Just Simple TextView Demo
10 | *
11 | * @author Clock
12 | * @since 2016-08-02
13 | */
14 | public class SimpleTextViewActivity extends AppCompatActivity {
15 |
16 | @Override
17 | protected void onCreate(Bundle savedInstanceState) {
18 | super.onCreate(savedInstanceState);
19 | setContentView(R.layout.activity_simple_text_view);
20 | }
21 | }
22 |
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/.idea/runConfigurations.xml:
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/app/src/main/java/com/clock/view/activity/PorterDuffXfermodeActivity.java:
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1 | package com.clock.view.activity;
2 |
3 | import android.support.v7.app.AppCompatActivity;
4 | import android.os.Bundle;
5 |
6 | import com.clock.view.R;
7 |
8 | /**
9 | * PorterDuffXfermode Demo Code
10 | *
11 | * @author Clock
12 | * @since 2016-08-09
13 | */
14 | public class PorterDuffXfermodeActivity extends AppCompatActivity {
15 |
16 | @Override
17 | protected void onCreate(Bundle savedInstanceState) {
18 | super.onCreate(savedInstanceState);
19 | setContentView(R.layout.activity_porter_duff_xfermode);
20 | }
21 | }
22 |
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/app/src/main/res/menu/shader.xml:
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/app/proguard-rules.pro:
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1 | # Add project specific ProGuard rules here.
2 | # By default, the flags in this file are appended to flags specified
3 | # in D:\Android-Studio\sdk/tools/proguard/proguard-android.txt
4 | # You can edit the include path and order by changing the proguardFiles
5 | # directive in build.gradle.
6 | #
7 | # For more details, see
8 | # http://developer.android.com/guide/developing/tools/proguard.html
9 |
10 | # Add any project specific keep options here:
11 |
12 | # If your project uses WebView with JS, uncomment the following
13 | # and specify the fully qualified class name to the JavaScript interface
14 | # class:
15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
16 | # public *;
17 | #}
18 |
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/Scratch/proguard-rules.pro:
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1 | # Add project specific ProGuard rules here.
2 | # By default, the flags in this file are appended to flags specified
3 | # in D:\Android-Studio\sdk/tools/proguard/proguard-android.txt
4 | # You can edit the include path and order by changing the proguardFiles
5 | # directive in build.gradle.
6 | #
7 | # For more details, see
8 | # http://developer.android.com/guide/developing/tools/proguard.html
9 |
10 | # Add any project specific keep options here:
11 |
12 | # If your project uses WebView with JS, uncomment the following
13 | # and specify the fully qualified class name to the JavaScript interface
14 | # class:
15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
16 | # public *;
17 | #}
18 |
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/app/build.gradle:
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1 | apply plugin: 'com.android.application'
2 |
3 | android {
4 | compileSdkVersion 23
5 | buildToolsVersion "23.0.3"
6 |
7 | defaultConfig {
8 | applicationId "com.clock.view"
9 | minSdkVersion 11
10 | targetSdkVersion 23
11 | versionCode 1
12 | versionName "1.0"
13 | }
14 | buildTypes {
15 | release {
16 | minifyEnabled false
17 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
18 | }
19 | }
20 | }
21 |
22 | dependencies {
23 | compile fileTree(dir: 'libs', include: ['*.jar'])
24 | testCompile 'junit:junit:4.12'
25 | compile 'com.android.support:appcompat-v7:23.4.0'
26 | compile project(':Scratch')
27 | }
28 |
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/gradle.properties:
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1 | # Project-wide Gradle settings.
2 |
3 | # IDE (e.g. Android Studio) users:
4 | # Gradle settings configured through the IDE *will override*
5 | # any settings specified in this file.
6 |
7 | # For more details on how to configure your build environment visit
8 | # http://www.gradle.org/docs/current/userguide/build_environment.html
9 |
10 | # Specifies the JVM arguments used for the daemon process.
11 | # The setting is particularly useful for tweaking memory settings.
12 | # Default value: -Xmx10248m -XX:MaxPermSize=256m
13 | # org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
14 |
15 | # When configured, Gradle will run in incubating parallel mode.
16 | # This option should only be used with decoupled projects. More details, visit
17 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
18 | # org.gradle.parallel=true
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/app/src/main/java/com/clock/view/MainActivity.java:
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1 | package com.clock.view;
2 |
3 | import android.content.Intent;
4 | import android.support.v7.app.AppCompatActivity;
5 | import android.os.Bundle;
6 | import android.view.View;
7 |
8 | import com.clock.view.activity.BasicCustomActivity;
9 | import com.clock.view.activity.ScratchDemoActivity;
10 |
11 | public class MainActivity extends AppCompatActivity implements View.OnClickListener {
12 |
13 | @Override
14 | protected void onCreate(Bundle savedInstanceState) {
15 | super.onCreate(savedInstanceState);
16 | setContentView(R.layout.activity_main);
17 |
18 | findViewById(R.id.btn_basic_custom).setOnClickListener(this);
19 | findViewById(R.id.btn_scratch_demo).setOnClickListener(this);
20 |
21 | }
22 |
23 | @Override
24 | public void onClick(View v) {
25 | int viewId = v.getId();
26 | if (viewId == R.id.btn_basic_custom) {
27 | Intent intent = new Intent(this, BasicCustomActivity.class);
28 | startActivity(intent);
29 |
30 | } else if (viewId == R.id.btn_scratch_demo) {
31 | Intent intent = new Intent(this, ScratchDemoActivity.class);
32 | startActivity(intent);
33 | }
34 |
35 | }
36 | }
37 |
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/app/src/main/java/com/clock/view/basic/SimpleTextView.java:
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1 | package com.clock.view.basic;
2 |
3 | import android.annotation.TargetApi;
4 | import android.content.Context;
5 | import android.graphics.Canvas;
6 | import android.graphics.Paint;
7 | import android.os.Build;
8 | import android.util.AttributeSet;
9 | import android.widget.TextView;
10 |
11 | /**
12 | * Created by Clock on 2016/8/2.
13 | */
14 | public class SimpleTextView extends TextView {
15 |
16 | private Paint mPaint1, mPaint2;
17 |
18 | public SimpleTextView(Context context) {
19 | super(context);
20 | initAttr();
21 | }
22 |
23 | public SimpleTextView(Context context, AttributeSet attrs) {
24 | super(context, attrs);
25 | initAttr();
26 | }
27 |
28 | public SimpleTextView(Context context, AttributeSet attrs, int defStyleAttr) {
29 | super(context, attrs, defStyleAttr);
30 | initAttr();
31 | }
32 |
33 | @TargetApi(Build.VERSION_CODES.LOLLIPOP)
34 | public SimpleTextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
35 | super(context, attrs, defStyleAttr, defStyleRes);
36 | initAttr();
37 | }
38 |
39 | private void initAttr() {
40 | mPaint1 = new Paint();
41 | mPaint1.setColor(getResources().getColor(android.R.color.holo_blue_bright));
42 | mPaint1.setStyle(Paint.Style.FILL);
43 |
44 | mPaint2 = new Paint();
45 | mPaint2.setColor(getResources().getColor(android.R.color.holo_purple));
46 | mPaint2.setStyle(Paint.Style.FILL);
47 |
48 | }
49 |
50 | @Override
51 | protected void onDraw(Canvas canvas) {
52 | //绘制外层矩形
53 | canvas.drawRect(0, 0, getMeasuredWidth(), getMeasuredHeight(), mPaint1);
54 | //绘制内层矩形
55 | canvas.drawRect(10, 10, getMeasuredWidth() - 10, getMeasuredHeight() - 10, mPaint2);
56 | canvas.save();
57 | canvas.translate(10, 0);
58 | super.onDraw(canvas);
59 | canvas.restore();
60 | }
61 | }
62 |
--------------------------------------------------------------------------------
/app/src/main/res/layout/activity_basic_custom.xml:
--------------------------------------------------------------------------------
1 |
2 |
12 |
13 |
18 |
19 |
24 |
25 |
30 |
31 |
36 |
37 |
42 |
43 |
48 |
49 |
54 |
55 |
--------------------------------------------------------------------------------
/app/src/main/java/com/clock/view/basic/PathView.java:
--------------------------------------------------------------------------------
1 | package com.clock.view.basic;
2 |
3 | import android.annotation.TargetApi;
4 | import android.content.Context;
5 | import android.graphics.Canvas;
6 | import android.graphics.Paint;
7 | import android.graphics.Path;
8 | import android.os.Build;
9 | import android.util.AttributeSet;
10 | import android.view.View;
11 |
12 | /**
13 | * Created by Clock on 2016/8/30.
14 | */
15 | public class PathView extends View {
16 | public PathView(Context context) {
17 | super(context);
18 | }
19 |
20 | public PathView(Context context, AttributeSet attrs) {
21 | super(context, attrs);
22 | }
23 |
24 | public PathView(Context context, AttributeSet attrs, int defStyleAttr) {
25 | super(context, attrs, defStyleAttr);
26 | }
27 |
28 | @TargetApi(Build.VERSION_CODES.LOLLIPOP)
29 | public PathView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
30 | super(context, attrs, defStyleAttr, defStyleRes);
31 | }
32 |
33 | @Override
34 | protected void onDraw(Canvas canvas) {
35 | super.onDraw(canvas);
36 |
37 | Paint paint = new Paint();
38 | paint.setAntiAlias(true);
39 | paint.setDither(true);
40 | paint.setColor(0xffff0000);
41 | paint.setStyle(Paint.Style.STROKE);
42 | paint.setStrokeWidth(15);
43 |
44 | Path path = new Path();
45 | path.lineTo(300, 300);
46 | canvas.drawPath(path, paint);
47 |
48 | paint.setColor(0xff47c7b6);
49 | path.reset();
50 | path.moveTo(300, 300);
51 | path.lineTo(0, 300);
52 | canvas.drawPath(path, paint);
53 |
54 | paint.setColor(0xff47c726);
55 | path.reset();
56 | path.moveTo(300, 300);
57 | path.quadTo(550, 550, 600, 350);//二阶贝塞尔曲线
58 | canvas.drawPath(path, paint);
59 |
60 | paint.setColor(0xff474226);
61 | path.reset();
62 | path.moveTo(300, 300);
63 | path.cubicTo(550, 550, 600, 600, 600, 100);//三阶贝塞尔曲线
64 | canvas.drawPath(path, paint);
65 |
66 | }
67 | }
68 |
--------------------------------------------------------------------------------
/app/src/main/java/com/clock/view/activity/BasicCustomActivity.java:
--------------------------------------------------------------------------------
1 | package com.clock.view.activity;
2 |
3 | import android.content.Intent;
4 | import android.support.v7.app.AppCompatActivity;
5 | import android.os.Bundle;
6 | import android.view.View;
7 |
8 | import com.clock.view.R;
9 |
10 | /**
11 | * Basic custom View or ViewGroup Training Demo
12 | *
13 | * @author Clock
14 | */
15 | public class BasicCustomActivity extends AppCompatActivity implements View.OnClickListener {
16 |
17 | @Override
18 | protected void onCreate(Bundle savedInstanceState) {
19 | super.onCreate(savedInstanceState);
20 | setContentView(R.layout.activity_basic_custom);
21 |
22 | findViewById(R.id.btn_custom_view).setOnClickListener(this);
23 | findViewById(R.id.btn_custom_viewgroup).setOnClickListener(this);
24 | findViewById(R.id.btn_tv).setOnClickListener(this);
25 | findViewById(R.id.btn_canvas).setOnClickListener(this);
26 | findViewById(R.id.btn_pdx).setOnClickListener(this);
27 | findViewById(R.id.btn_shader).setOnClickListener(this);
28 | findViewById(R.id.btn_path).setOnClickListener(this);
29 |
30 | }
31 |
32 | @Override
33 | public void onClick(View v) {
34 | int viewId = v.getId();
35 | if (viewId == R.id.btn_custom_view) {
36 | Intent intent = new Intent(this, CustomViewActivity.class);
37 | startActivity(intent);
38 | } else if (viewId == R.id.btn_custom_viewgroup) {
39 | Intent intent = new Intent(this, CustomViewGroupActivity.class);
40 | startActivity(intent);
41 | } else if (viewId == R.id.btn_tv) {
42 | Intent intent = new Intent(this, SimpleTextViewActivity.class);
43 | startActivity(intent);
44 | } else if (viewId == R.id.btn_canvas) {
45 | Intent intent = new Intent(this, CanvasActivity.class);
46 | startActivity(intent);
47 | } else if (viewId == R.id.btn_pdx) {
48 | Intent intent = new Intent(this, PorterDuffXfermodeActivity.class);
49 | startActivity(intent);
50 | } else if (viewId == R.id.btn_shader) {
51 | Intent intent = new Intent(this, ShaderActivity.class);
52 | startActivity(intent);
53 | } else if (viewId == R.id.btn_path) {
54 | Intent intent = new Intent(this, PathActivity.class);
55 | startActivity(intent);
56 | }
57 | }
58 | }
59 |
--------------------------------------------------------------------------------
/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 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
12 | set DEFAULT_JVM_OPTS=
13 |
14 | set DIRNAME=%~dp0
15 | if "%DIRNAME%" == "" set DIRNAME=.
16 | set APP_BASE_NAME=%~n0
17 | set APP_HOME=%DIRNAME%
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 Windowz variants
50 |
51 | if not "%OS%" == "Windows_NT" goto win9xME_args
52 | if "%@eval[2+2]" == "4" goto 4NT_args
53 |
54 | :win9xME_args
55 | @rem Slurp the command line arguments.
56 | set CMD_LINE_ARGS=
57 | set _SKIP=2
58 |
59 | :win9xME_args_slurp
60 | if "x%~1" == "x" goto execute
61 |
62 | set CMD_LINE_ARGS=%*
63 | goto execute
64 |
65 | :4NT_args
66 | @rem Get arguments from the 4NT Shell from JP Software
67 | set CMD_LINE_ARGS=%$
68 |
69 | :execute
70 | @rem Setup the command line
71 |
72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
73 |
74 | @rem Execute Gradle
75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
76 |
77 | :end
78 | @rem End local scope for the variables with windows NT shell
79 | if "%ERRORLEVEL%"=="0" goto mainEnd
80 |
81 | :fail
82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
83 | rem the _cmd.exe /c_ return code!
84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
85 | exit /b 1
86 |
87 | :mainEnd
88 | if "%OS%"=="Windows_NT" endlocal
89 |
90 | :omega
91 |
--------------------------------------------------------------------------------
/app/src/main/java/com/clock/view/basic/CustomViewGroup.java:
--------------------------------------------------------------------------------
1 | package com.clock.view.basic;
2 |
3 | import android.annotation.TargetApi;
4 | import android.content.Context;
5 | import android.graphics.Canvas;
6 | import android.os.Build;
7 | import android.util.AttributeSet;
8 | import android.util.Log;
9 | import android.view.ViewGroup;
10 |
11 | /**
12 | * This is Basic Custom ViewGroup
13 | *
14 | * Created by Clock on 2016/8/1.
15 | */
16 | public class CustomViewGroup extends ViewGroup {
17 |
18 | private final static String TAG = CustomViewGroup.class.getSimpleName();
19 |
20 | public CustomViewGroup(Context context) {
21 | super(context);
22 | }
23 |
24 | public CustomViewGroup(Context context, AttributeSet attrs) {
25 | super(context, attrs);
26 | }
27 |
28 | public CustomViewGroup(Context context, AttributeSet attrs, int defStyleAttr) {
29 | super(context, attrs, defStyleAttr);
30 | }
31 |
32 | @TargetApi(Build.VERSION_CODES.LOLLIPOP)
33 | public CustomViewGroup(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
34 | super(context, attrs, defStyleAttr, defStyleRes);
35 | }
36 |
37 | @Override
38 | protected void onLayout(boolean changed, int l, int t, int r, int b) {
39 | Log.i(TAG, "onLayout");
40 | }
41 |
42 | @Override
43 | protected void onDraw(Canvas canvas) {
44 | Log.i(TAG, "onDraw");
45 | super.onDraw(canvas);
46 | }
47 |
48 | @Override
49 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
50 | Log.i(TAG, "onMeasure");
51 | super.onMeasure(widthMeasureSpec, heightMeasureSpec);
52 | //自定义View系统默认是EXACTLY模式(具体值或者match_parent),其他模式 AT_MOST(wrap_content)、UNSPECIFIED 需要自行实现
53 | int measuredWidth = measureSize(widthMeasureSpec);
54 | int measuredHeight = measureSize(heightMeasureSpec);
55 | setMeasuredDimension(measuredWidth, measuredHeight);
56 | }
57 |
58 | /**
59 | * 测量获取当前View设置的实际尺寸大小
60 | *
61 | * @param measureSpec
62 | * @return
63 | */
64 | private int measureSize(int measureSpec) {
65 | int size = 0;
66 | int specMode = MeasureSpec.getMode(measureSpec);
67 | int specSize = MeasureSpec.getSize(measureSpec);
68 | Log.i(TAG, "specMode: " + specMode);
69 | Log.i(TAG, "specSize: " + specSize);
70 | if (specMode == MeasureSpec.EXACTLY) {
71 | size = specSize;
72 | } else {
73 | if (specMode == MeasureSpec.AT_MOST) {
74 | size = Math.min(size, specSize);
75 | }
76 | }
77 | return size;
78 |
79 | }
80 | }
81 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # ScratchView
2 |
3 | This is a android custom view , like a scratch card effect!
4 |
5 | ## Last Update
6 |
7 | - 采纳[DearZack童鞋的优化思路](https://github.com/D-clock/ScratchView/issues/3),把计算擦除面积比例的操作放在手指离开屏幕时,以降低对CPU的占用。
8 |
9 | ## Articles
10 |
11 | - [ScratchView:一步步打造万能的 Android 刮奖效果控件](http://www.jianshu.com/p/2514a08d8217)
12 |
13 | ## Demo screen
14 |
15 | 
16 |
17 | ## Import
18 |
19 | Gradle
20 |
21 | ```
22 |
23 | dependencies {
24 | compile 'com.clock.scratch:Scratch:1.0.0'
25 | }
26 |
27 | ```
28 |
29 | Maven
30 |
31 | ```
32 |
33 |
34 | com.clock.scratch
35 | Scratch
36 | 1.0.0
37 | pom
38 |
39 |
40 | ```
41 |
42 | ## How to use
43 |
44 | - Create a contains of content view and ScratchView FrameLayout,let ScratchView displayed in the top.
45 |
46 | ```xml
47 |
48 |
53 |
54 |
55 |
60 |
61 |
62 |
66 |
67 |
68 | ```
69 |
70 | - Key Properties and Java API
71 |
72 | | Properties | Java API |
73 | |------------|----------|
74 | | scratch:maskColor | setMaskColor(int color) |
75 | | scratch:watermark | setWatermark(int resId) |
76 | | scratch:eraseSize | setEraserSize(float eraserSize) |
77 | | scratch:maxPercent | setMaxPercent(int max) |
78 |
79 | More use , you need see the demo code...
80 |
81 | ## License
82 |
83 | Copyright 2016 D_clock爱吃葱花
84 |
85 | Licensed under the Apache License, Version 2.0 (the "License");
86 | you may not use this file except in compliance with the License.
87 | You may obtain a copy of the License at
88 |
89 | http://www.apache.org/licenses/LICENSE-2.0
90 |
91 | Unless required by applicable law or agreed to in writing, software
92 | distributed under the License is distributed on an "AS IS" BASIS,
93 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
94 | See the License for the specific language governing permissions and
95 | limitations under the License.
--------------------------------------------------------------------------------
/.idea/misc.xml:
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
32 |
33 |
34 |
35 |
36 |
37 |
38 |
39 |
40 |
41 |
42 |
43 |
44 |
45 |
46 |
47 |
48 |
49 |
50 | Android API 4 Platform
51 |
52 |
53 |
54 |
55 |
56 |
57 |
58 |
59 |
60 |
61 |
62 |
--------------------------------------------------------------------------------
/Scratch/build.gradle:
--------------------------------------------------------------------------------
1 | apply plugin: 'com.android.library'
2 | apply plugin: 'com.github.dcendents.android-maven'
3 | apply plugin: 'com.jfrog.bintray'
4 | // This is the library version used when deploying the artifact
5 | version = "1.0.0"
6 | group = "com.clock.scratch" // Maven Group ID for the artifact,一般填你唯一的包名
7 |
8 | android {
9 | compileSdkVersion 23
10 | buildToolsVersion "23.0.3"
11 | resourcePrefix "ScratchView_" //暂不清楚作用,随便填
12 |
13 | defaultConfig {
14 | minSdkVersion 11
15 | targetSdkVersion 23
16 | versionCode 1
17 | versionName version
18 | }
19 | buildTypes {
20 | release {
21 | minifyEnabled false
22 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
23 | }
24 | }
25 | lintOptions {
26 | abortOnError false
27 | }
28 | }
29 |
30 | dependencies {
31 | compile fileTree(dir: 'libs', include: ['*.jar'])
32 | testCompile 'junit:junit:4.12'
33 | compile 'com.android.support:appcompat-v7:23.4.0'
34 | }
35 |
36 | def siteUrl = 'https://github.com/D-clock/ScratchView' // 项目的主页
37 | def gitUrl = 'https://github.com/D-clock/ScratchView.git' // Git仓库的url
38 |
39 | install {
40 | repositories.mavenInstaller {
41 | // This generates POM.xml with proper parameters
42 | pom {
43 | project {
44 | packaging 'aar'
45 | name 'This is a android custom view , like a scratch card effect! '
46 | // Add your description here 添加一些项目描述
47 | url siteUrl
48 | licenses {
49 | license {
50 | name 'The Apache Software License, Version 2.0'
51 | url 'http://www.apache.org/licenses/LICENSE-2.0.txt'
52 | }
53 | }
54 | developers {
55 | developer {
56 | id 'clock'
57 | name 'D_clock爱吃葱花'
58 | email '1084991652clock@gmail.com'
59 | }
60 | }
61 | scm {
62 | connection gitUrl
63 | developerConnection gitUrl
64 | url siteUrl
65 | }
66 | }
67 | }
68 | }
69 | }
70 |
71 | task sourcesJar(type: Jar) {
72 | from android.sourceSets.main.java.srcDirs
73 | classifier = 'sources'
74 | }
75 |
76 | task javadoc(type: Javadoc) {
77 | source = android.sourceSets.main.java.srcDirs
78 | classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
79 | options.encoding = "utf-8" //让注释使用 UTF-8 编码,不然中文通不过,会导致失败
80 | }
81 |
82 | task javadocJar(type: Jar, dependsOn: javadoc) {
83 | classifier = 'javadoc'
84 | from javadoc.destinationDir
85 | }
86 |
87 | artifacts {
88 | archives javadocJar
89 | archives sourcesJar
90 | }
91 |
92 | Properties properties = new Properties()
93 | properties.load(project.rootProject.file('local.properties').newDataInputStream())
94 | bintray {
95 | user = properties.getProperty("bintray.user")
96 | key = properties.getProperty("bintray.apikey")
97 | configurations = ['archives']
98 | pkg {
99 | repo = "maven"
100 | name = "ScratchView" //发布到JCenter上的项目名字
101 | websiteUrl = siteUrl
102 | vcsUrl = gitUrl
103 | licenses = ["Apache-2.0"]
104 | publish = true
105 | }
106 | }
--------------------------------------------------------------------------------
/app/src/main/java/com/clock/view/activity/ScratchDemoActivity.java:
--------------------------------------------------------------------------------
1 | package com.clock.view.activity;
2 |
3 | import android.support.v7.app.AppCompatActivity;
4 | import android.os.Bundle;
5 | import android.view.View;
6 | import android.widget.RadioGroup;
7 | import android.widget.SeekBar;
8 | import android.widget.TextView;
9 | import android.widget.Toast;
10 |
11 | import com.clock.scratch.ScratchView;
12 | import com.clock.view.R;
13 |
14 | /**
15 | * Just Scratch Demo Code
16 | *
17 | * @author Clock
18 | * @since 2016-08-26
19 | */
20 | public class ScratchDemoActivity extends AppCompatActivity implements View.OnClickListener, RadioGroup.OnCheckedChangeListener {
21 |
22 | private final static String TAG = ScratchDemoActivity.class.getSimpleName();
23 |
24 | private ScratchView mScratchView;
25 | private SeekBar mEraseSeekBar, mPercentSeekBar;
26 | private TextView mPercentView;
27 | private String mPercentFormat;
28 |
29 | @Override
30 | protected void onCreate(Bundle savedInstanceState) {
31 | super.onCreate(savedInstanceState);
32 | setContentView(R.layout.activity_scratch_demo);
33 |
34 | mPercentView = (TextView) findViewById(R.id.tv_percent);
35 | mPercentFormat = getString(R.string.scratch_percent);
36 |
37 | mScratchView = (ScratchView) findViewById(R.id.scratch_view);
38 | mScratchView.setEraseStatusListener(new ScratchView.EraseStatusListener() {
39 | @Override
40 | public void onProgress(int percent) {
41 | String text = String.format(mPercentFormat, percent);
42 | mPercentView.setText(text);
43 | }
44 |
45 | @Override
46 | public void onCompleted(View view) {
47 | Toast.makeText(ScratchDemoActivity.this, "completed !", Toast.LENGTH_SHORT).show();
48 | }
49 | });
50 |
51 | findViewById(R.id.btn_clear).setOnClickListener(this);
52 | findViewById(R.id.btn_reset).setOnClickListener(this);
53 |
54 | mEraseSeekBar = (SeekBar) findViewById(R.id.sb_erase_size);
55 | mEraseSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
56 | @Override
57 | public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
58 | mScratchView.setEraserSize(progress);
59 | }
60 |
61 | @Override
62 | public void onStartTrackingTouch(SeekBar seekBar) {
63 |
64 | }
65 |
66 | @Override
67 | public void onStopTrackingTouch(SeekBar seekBar) {
68 |
69 | }
70 | });
71 |
72 | mPercentSeekBar = (SeekBar) findViewById(R.id.sb_max_percent);
73 | mPercentSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
74 | @Override
75 | public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
76 | mScratchView.setMaxPercent(progress);
77 | }
78 |
79 | @Override
80 | public void onStartTrackingTouch(SeekBar seekBar) {
81 |
82 | }
83 |
84 | @Override
85 | public void onStopTrackingTouch(SeekBar seekBar) {
86 |
87 | }
88 | });
89 |
90 | RadioGroup colorGroup = (RadioGroup) findViewById(R.id.rg_color);
91 | colorGroup.setOnCheckedChangeListener(this);
92 | RadioGroup watermarkGroup = (RadioGroup) findViewById(R.id.rg_watermark);
93 | watermarkGroup.setOnCheckedChangeListener(this);
94 |
95 | }
96 |
97 | @Override
98 | public void onClick(View v) {
99 | int viewId = v.getId();
100 | if (viewId == R.id.btn_reset) {
101 | mScratchView.reset();
102 | } else if (viewId == R.id.btn_clear) {
103 | mScratchView.clear();
104 | }
105 | }
106 |
107 | @Override
108 | public void onCheckedChanged(RadioGroup group, int checkedId) {
109 | if (checkedId == R.id.rb_red) {
110 | mScratchView.setMaskColor(0xffff0000);
111 |
112 | } else if (checkedId == R.id.rb_green) {
113 | mScratchView.setMaskColor(0xff00ff00);
114 |
115 | } else if (checkedId == R.id.rb_blue) {
116 | mScratchView.setMaskColor(0xff0000ff);
117 |
118 | } else if (checkedId == R.id.rb_origin) {
119 | mScratchView.setMaskColor(0xffcccccc);
120 |
121 | } else if (checkedId == R.id.rb_alipay) {
122 | mScratchView.setWatermark(R.mipmap.alipay);
123 |
124 | } else if (checkedId == R.id.rb_no) {
125 | mScratchView.setWatermark(-1);
126 |
127 | }
128 | mScratchView.reset();
129 | }
130 | }
131 |
--------------------------------------------------------------------------------
/app/src/main/java/com/clock/view/basic/SimpleXfermodeView.java:
--------------------------------------------------------------------------------
1 | package com.clock.view.basic;
2 |
3 | import android.annotation.TargetApi;
4 | import android.content.Context;
5 | import android.graphics.Bitmap;
6 | import android.graphics.Canvas;
7 | import android.graphics.Paint;
8 | import android.graphics.PorterDuff;
9 | import android.graphics.PorterDuffXfermode;
10 | import android.graphics.Rect;
11 | import android.os.Build;
12 | import android.util.AttributeSet;
13 | import android.view.View;
14 |
15 | /**
16 | * PorterDuffXfermode Training Code
17 | *
18 | * Created by Clock on 2016/8/9.
19 | */
20 | public class SimpleXfermodeView extends View {
21 |
22 | private final static String TAG = SimpleXfermodeView.class.getSimpleName();
23 |
24 | public SimpleXfermodeView(Context context) {
25 | super(context);
26 | }
27 |
28 | public SimpleXfermodeView(Context context, AttributeSet attrs) {
29 | super(context, attrs);
30 | }
31 |
32 | public SimpleXfermodeView(Context context, AttributeSet attrs, int defStyleAttr) {
33 | super(context, attrs, defStyleAttr);
34 | }
35 |
36 | @TargetApi(Build.VERSION_CODES.LOLLIPOP)
37 | public SimpleXfermodeView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
38 | super(context, attrs, defStyleAttr, defStyleRes);
39 | }
40 |
41 | @Override
42 | protected void onDraw(Canvas canvas) {
43 | super.onDraw(canvas);
44 | //setLayerType(LAYER_TYPE_SOFTWARE, null);//如果混合模式没有正确使用,可以让调用此方法禁用掉View的GPU硬件加速,切换到软件渲染模式
45 | //clear(canvas);
46 | //clearNewLayer(canvas);
47 | srcIn(canvas);
48 | }
49 |
50 | /**
51 | * 使用 PorterDuffXfermode 的 CLEAR 模式
52 | *
53 | * @param canvas
54 | */
55 | private void clear(Canvas canvas) {
56 | Paint paint = new Paint();
57 | canvas.drawARGB(255, 229, 130, 133);
58 |
59 | paint.setColor(0xFFE8B36D);
60 | int circleRadius = getWidth() / 5;
61 | canvas.drawCircle(circleRadius, circleRadius, circleRadius, paint);
62 |
63 | setLayerType(LAYER_TYPE_SOFTWARE, null);//不加这个,CLEAR就会变成黑色的
64 | paint.setColor(0xFF75C22A);
65 | paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
66 | Rect rect = new Rect(circleRadius, circleRadius, 3 * circleRadius, 3 * circleRadius);
67 | canvas.drawRect(rect, paint);
68 | paint.setXfermode(null);
69 | }
70 |
71 | /**
72 | * 在Canvas新建的Layer上做CLEAR操作
73 | *
74 | * @param canvas
75 | */
76 | private void clearNewLayer(Canvas canvas) {
77 | Paint paint = new Paint();
78 | canvas.drawARGB(255, 229, 130, 133);
79 |
80 | int layerId = canvas.saveLayer(0, 0, getWidth(), getHeight(), null, Canvas.ALL_SAVE_FLAG);//为Canvas创建一个新图层,图层是完全透明的
81 |
82 | paint.setColor(0xFFE8B36D);
83 | int circleRadius = getWidth() / 5;
84 | canvas.drawCircle(circleRadius, circleRadius, circleRadius, paint);
85 |
86 | paint.setColor(0xFF75C22A);
87 | paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
88 | Rect rect = new Rect(circleRadius, circleRadius, 3 * circleRadius, 3 * circleRadius);
89 | canvas.drawRect(rect, paint);
90 | paint.setXfermode(null);
91 |
92 | canvas.restoreToCount(layerId);
93 | }
94 |
95 | /**
96 | * 使用 PorterDuffXfermode 的 SRC_IN 模式
97 | *
98 | * @param canvas
99 | */
100 | private void srcIn(Canvas canvas) {
101 | Paint paint = new Paint();
102 | canvas.drawARGB(255, 229, 130, 133);
103 |
104 | //设置画布支持多图层
105 | int layerId = canvas.saveLayer(0, 0, getWidth(), getHeight(), paint,
106 | Canvas.ALL_SAVE_FLAG | Canvas.CLIP_SAVE_FLAG |
107 | Canvas.CLIP_TO_LAYER_SAVE_FLAG | Canvas.FULL_COLOR_LAYER_SAVE_FLAG |
108 | Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG);
109 |
110 | canvas.drawBitmap(makeCircle(), 0, 0, paint);
111 |
112 | paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
113 | canvas.drawBitmap(makeRect(), 0, 0, paint);
114 | paint.setXfermode(null);
115 |
116 | canvas.restoreToCount(layerId);
117 | }
118 |
119 | private Bitmap makeCircle() {
120 | Bitmap bitmap = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888);
121 | Canvas canvas = new Canvas(bitmap);
122 | Paint paint = new Paint();
123 | paint.setColor(0xFFE8B36D);
124 | int circleRadius = getWidth() / 5;
125 | canvas.drawCircle(circleRadius, circleRadius, circleRadius, paint);
126 | return bitmap;
127 | }
128 |
129 | private Bitmap makeRect() {
130 | Bitmap bitmap = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888);
131 | Canvas canvas = new Canvas(bitmap);
132 | Paint paint = new Paint();
133 | int circleRadius = getWidth() / 5;
134 | paint.setColor(0xFF75C22A);
135 | Rect rect = new Rect(circleRadius, circleRadius, 3 * circleRadius, 3 * circleRadius);
136 | canvas.drawRect(rect, paint);
137 | return bitmap;
138 | }
139 |
140 | }
141 |
--------------------------------------------------------------------------------
/gradlew:
--------------------------------------------------------------------------------
1 | #!/usr/bin/env bash
2 |
3 | ##############################################################################
4 | ##
5 | ## Gradle start up script for UN*X
6 | ##
7 | ##############################################################################
8 |
9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
10 | DEFAULT_JVM_OPTS=""
11 |
12 | APP_NAME="Gradle"
13 | APP_BASE_NAME=`basename "$0"`
14 |
15 | # Use the maximum available, or set MAX_FD != -1 to use that value.
16 | MAX_FD="maximum"
17 |
18 | warn ( ) {
19 | echo "$*"
20 | }
21 |
22 | die ( ) {
23 | echo
24 | echo "$*"
25 | echo
26 | exit 1
27 | }
28 |
29 | # OS specific support (must be 'true' or 'false').
30 | cygwin=false
31 | msys=false
32 | darwin=false
33 | case "`uname`" in
34 | CYGWIN* )
35 | cygwin=true
36 | ;;
37 | Darwin* )
38 | darwin=true
39 | ;;
40 | MINGW* )
41 | msys=true
42 | ;;
43 | esac
44 |
45 | # Attempt to set APP_HOME
46 | # Resolve links: $0 may be a link
47 | PRG="$0"
48 | # Need this for relative symlinks.
49 | while [ -h "$PRG" ] ; do
50 | ls=`ls -ld "$PRG"`
51 | link=`expr "$ls" : '.*-> \(.*\)$'`
52 | if expr "$link" : '/.*' > /dev/null; then
53 | PRG="$link"
54 | else
55 | PRG=`dirname "$PRG"`"/$link"
56 | fi
57 | done
58 | SAVED="`pwd`"
59 | cd "`dirname \"$PRG\"`/" >/dev/null
60 | APP_HOME="`pwd -P`"
61 | cd "$SAVED" >/dev/null
62 |
63 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
64 |
65 | # Determine the Java command to use to start the JVM.
66 | if [ -n "$JAVA_HOME" ] ; then
67 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
68 | # IBM's JDK on AIX uses strange locations for the executables
69 | JAVACMD="$JAVA_HOME/jre/sh/java"
70 | else
71 | JAVACMD="$JAVA_HOME/bin/java"
72 | fi
73 | if [ ! -x "$JAVACMD" ] ; then
74 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
75 |
76 | Please set the JAVA_HOME variable in your environment to match the
77 | location of your Java installation."
78 | fi
79 | else
80 | JAVACMD="java"
81 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
82 |
83 | Please set the JAVA_HOME variable in your environment to match the
84 | location of your Java installation."
85 | fi
86 |
87 | # Increase the maximum file descriptors if we can.
88 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
89 | MAX_FD_LIMIT=`ulimit -H -n`
90 | if [ $? -eq 0 ] ; then
91 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
92 | MAX_FD="$MAX_FD_LIMIT"
93 | fi
94 | ulimit -n $MAX_FD
95 | if [ $? -ne 0 ] ; then
96 | warn "Could not set maximum file descriptor limit: $MAX_FD"
97 | fi
98 | else
99 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
100 | fi
101 | fi
102 |
103 | # For Darwin, add options to specify how the application appears in the dock
104 | if $darwin; then
105 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
106 | fi
107 |
108 | # For Cygwin, switch paths to Windows format before running java
109 | if $cygwin ; then
110 | APP_HOME=`cygpath --path --mixed "$APP_HOME"`
111 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
112 | JAVACMD=`cygpath --unix "$JAVACMD"`
113 |
114 | # We build the pattern for arguments to be converted via cygpath
115 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
116 | SEP=""
117 | for dir in $ROOTDIRSRAW ; do
118 | ROOTDIRS="$ROOTDIRS$SEP$dir"
119 | SEP="|"
120 | done
121 | OURCYGPATTERN="(^($ROOTDIRS))"
122 | # Add a user-defined pattern to the cygpath arguments
123 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then
124 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
125 | fi
126 | # Now convert the arguments - kludge to limit ourselves to /bin/sh
127 | i=0
128 | for arg in "$@" ; do
129 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
130 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
131 |
132 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
133 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
134 | else
135 | eval `echo args$i`="\"$arg\""
136 | fi
137 | i=$((i+1))
138 | done
139 | case $i in
140 | (0) set -- ;;
141 | (1) set -- "$args0" ;;
142 | (2) set -- "$args0" "$args1" ;;
143 | (3) set -- "$args0" "$args1" "$args2" ;;
144 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
145 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
146 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
147 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
148 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
149 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
150 | esac
151 | fi
152 |
153 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
154 | function splitJvmOpts() {
155 | JVM_OPTS=("$@")
156 | }
157 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
158 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
159 |
160 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
161 |
--------------------------------------------------------------------------------
/app/src/main/java/com/clock/view/activity/ShaderActivity.java:
--------------------------------------------------------------------------------
1 | package com.clock.view.activity;
2 |
3 | import android.graphics.Bitmap;
4 | import android.graphics.BitmapFactory;
5 | import android.graphics.BitmapShader;
6 | import android.graphics.Canvas;
7 | import android.graphics.Color;
8 | import android.graphics.ComposeShader;
9 | import android.graphics.LinearGradient;
10 | import android.graphics.Paint;
11 | import android.graphics.PorterDuff;
12 | import android.graphics.RadialGradient;
13 | import android.graphics.RectF;
14 | import android.graphics.Shader;
15 | import android.graphics.SweepGradient;
16 | import android.os.Bundle;
17 | import android.support.v7.app.AppCompatActivity;
18 | import android.view.Menu;
19 | import android.view.MenuInflater;
20 | import android.view.MenuItem;
21 | import android.widget.ImageView;
22 |
23 | import com.clock.view.R;
24 |
25 | /**
26 | * Shader Demo Code
27 | *
28 | * @author Clock
29 | * @since 2016-08-10
30 | */
31 | public class ShaderActivity extends AppCompatActivity {
32 |
33 | private ImageView mTargetView;
34 |
35 | @Override
36 | protected void onCreate(Bundle savedInstanceState) {
37 | super.onCreate(savedInstanceState);
38 | setContentView(R.layout.activity_shader);
39 |
40 | mTargetView = (ImageView) findViewById(R.id.iv_target);
41 | }
42 |
43 | @Override
44 | public boolean onCreateOptionsMenu(Menu menu) {
45 | MenuInflater menuInflater = new MenuInflater(this);
46 | menuInflater.inflate(R.menu.shader, menu);
47 | return super.onCreateOptionsMenu(menu);
48 | }
49 |
50 | @Override
51 | public boolean onOptionsItemSelected(MenuItem item) {
52 | int itemId = item.getItemId();
53 | if (itemId == R.id.bitmap_shader) {
54 | Paint paint = new Paint();
55 | paint.setColor(Color.BLUE);
56 | Bitmap bt = BitmapFactory.decodeResource(getResources(), R.mipmap.evernote);
57 | BitmapShader bitmapShader = new BitmapShader(bt, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
58 | paint.setShader(bitmapShader);
59 | int width = mTargetView.getWidth();
60 | int height = mTargetView.getHeight();
61 | Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
62 | Canvas canvas = new Canvas(bitmap);
63 | canvas.drawARGB(255, 45, 99, 56);
64 | canvas.drawRect(0, 0, width / 2, height / 2, paint);
65 | mTargetView.setImageBitmap(bitmap);
66 |
67 | } else if (itemId == R.id.compose_shader) {
68 | Paint paint = new Paint();
69 | int width = mTargetView.getWidth();
70 | int height = mTargetView.getHeight();
71 | Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
72 | Canvas canvas = new Canvas(bitmap);
73 | canvas.drawARGB(255, 45, 99, 56);
74 | paint.setColor(0xFF853456);
75 | RadialGradient radialGradient = new RadialGradient(width / 2, height / 2, 300, Color.GREEN, Color.BLUE, Shader.TileMode.MIRROR);
76 | SweepGradient sweepGradient = new SweepGradient(width / 2, height / 2, Color.GREEN, Color.BLUE);
77 | ComposeShader composeShader = new ComposeShader(radialGradient, sweepGradient, PorterDuff.Mode.MULTIPLY);
78 | paint.setShader(composeShader);
79 | canvas.drawRect(0, 0, width, height, paint);
80 | mTargetView.setImageBitmap(bitmap);
81 |
82 | } else if (itemId == R.id.linear_gradient) {
83 | Paint paint = new Paint();
84 | int width = mTargetView.getWidth();
85 | int height = mTargetView.getHeight();
86 | Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
87 | Canvas canvas = new Canvas(bitmap);
88 | canvas.drawARGB(255, 45, 99, 56);
89 | paint.setColor(0xFF853456);
90 | LinearGradient linearGradient = new LinearGradient(0, 0, width, height, Color.GREEN, Color.BLUE, Shader.TileMode.CLAMP);
91 | paint.setShader(linearGradient);
92 | canvas.drawRect(0, 0, width, height, paint);
93 | mTargetView.setImageBitmap(bitmap);
94 |
95 | } else if (itemId == R.id.radial_gradient) {
96 | Paint paint = new Paint();
97 | int width = mTargetView.getWidth();
98 | int height = mTargetView.getHeight();
99 | Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
100 | Canvas canvas = new Canvas(bitmap);
101 | canvas.drawARGB(255, 45, 99, 56);
102 | paint.setColor(0xFF853456);
103 | RadialGradient radialGradient = new RadialGradient(width / 2, height / 2, 300, Color.GREEN, Color.BLUE, Shader.TileMode.MIRROR);
104 | paint.setShader(radialGradient);
105 | canvas.drawRect(0, 0, width, height, paint);
106 | mTargetView.setImageBitmap(bitmap);
107 |
108 | } else if (itemId == R.id.sweep_gradient) {
109 | Paint paint = new Paint();
110 | int width = mTargetView.getWidth();
111 | int height = mTargetView.getHeight();
112 | Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
113 | Canvas canvas = new Canvas(bitmap);
114 | canvas.drawARGB(255, 45, 99, 56);
115 | paint.setColor(0xFF853456);
116 | SweepGradient sweepGradient = new SweepGradient(width / 2, height / 2, Color.GREEN, Color.BLUE);
117 | paint.setShader(sweepGradient);
118 | canvas.drawRect(0, 0, width, height, paint);
119 | mTargetView.setImageBitmap(bitmap);
120 |
121 | }
122 | return super.onOptionsItemSelected(item);
123 | }
124 |
125 | }
126 |
--------------------------------------------------------------------------------
/app/src/main/java/com/clock/view/basic/CustomView.java:
--------------------------------------------------------------------------------
1 | package com.clock.view.basic;
2 |
3 | import android.annotation.TargetApi;
4 | import android.content.Context;
5 | import android.content.res.TypedArray;
6 | import android.graphics.Canvas;
7 | import android.graphics.Paint;
8 | import android.graphics.Rect;
9 | import android.os.Build;
10 | import android.text.TextPaint;
11 | import android.text.TextUtils;
12 | import android.util.AttributeSet;
13 | import android.util.DisplayMetrics;
14 | import android.util.Log;
15 | import android.util.TypedValue;
16 | import android.view.View;
17 |
18 | import com.clock.view.R;
19 |
20 | /**
21 | * This is Basic Custom View.
22 | *
23 | * Created by Clock on 2016/8/1.
24 | */
25 | public class CustomView extends View {
26 |
27 | private final static String TAG = CustomView.class.getSimpleName();
28 |
29 | /**
30 | * 显示的文本
31 | */
32 | private String mText;
33 | /**
34 | * 字体大小
35 | */
36 | private float mTextSize;
37 | /**
38 | * 绘制文字的笔
39 | */
40 | private TextPaint mTextPaint;
41 |
42 | public CustomView(Context context) {
43 | super(context);
44 | TypedArray typedArray = context.obtainStyledAttributes(R.styleable.CustomView);
45 | initAttr(context, typedArray);
46 | }
47 |
48 | public CustomView(Context context, AttributeSet attrs) {
49 | super(context, attrs);
50 | TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.CustomView);
51 | initAttr(context, typedArray);
52 | }
53 |
54 | public CustomView(Context context, AttributeSet attrs, int defStyleAttr) {
55 | super(context, attrs, defStyleAttr);
56 | TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.CustomView, defStyleAttr, 0);
57 | initAttr(context, typedArray);
58 | }
59 |
60 | @TargetApi(Build.VERSION_CODES.LOLLIPOP)
61 | public CustomView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
62 | super(context, attrs, defStyleAttr, defStyleRes);
63 | TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.CustomView, defStyleAttr, defStyleRes);
64 | initAttr(context, typedArray);
65 | }
66 |
67 | @Override
68 | protected void onAttachedToWindow() {
69 | Log.i(TAG, "onAttachedToWindow");
70 | super.onAttachedToWindow();
71 | }
72 |
73 | private void initAttr(Context context, TypedArray typedArray) {
74 | mText = typedArray.getString(R.styleable.CustomView_text);
75 |
76 | DisplayMetrics metrics = getResources().getDisplayMetrics();
77 | float defaultSize = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 15f, metrics);
78 | mTextSize = typedArray.getDimension(R.styleable.CustomView_textSize, defaultSize);
79 | Log.i(TAG, "mTextSize: " + mTextSize);
80 |
81 | mTextPaint = new TextPaint();
82 | mTextPaint.setTextSize(mTextSize);
83 | mTextPaint.setARGB(255, 56, 167, 150);
84 | mTextPaint.setAntiAlias(true);
85 |
86 | typedArray.recycle();
87 | }
88 |
89 | @Override
90 | protected void onDraw(Canvas canvas) {
91 | Log.i(TAG, "onDraw");
92 | super.onDraw(canvas);
93 |
94 | drawText(canvas);
95 | }
96 |
97 | private void drawText(Canvas canvas) {
98 | if (!TextUtils.isEmpty(mText)) {
99 | Paint.FontMetrics fontMetrics = mTextPaint.getFontMetrics();
100 | Log.i(TAG, "fontMetrics.top : " + fontMetrics.top);//baseline到文本最顶端的距离+为一些特殊字符预留了顶部空间
101 | Log.i(TAG, "fontMetrics.bottom : " + fontMetrics.bottom);//baseline到文本最底端的距离+为一些特殊字符预留了底部空间
102 | Log.i(TAG, "fontMetrics.leading : " + fontMetrics.leading);//行间距,表示上一行字符的descent到该行字符的ascent之间的距离
103 | Log.i(TAG, "fontMetrics.descent : " + fontMetrics.descent);//baseline到文本最顶端的距离
104 | Log.i(TAG, "fontMetrics.ascent : " + fontMetrics.ascent);//baseline到文本最底端的距离
105 | canvas.drawText(mText, 0, Math.abs(fontMetrics.ascent), mTextPaint);//设置baseline的坐标
106 | }
107 | }
108 |
109 | @Override
110 | protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
111 | Log.i(TAG, "onLayout");
112 | super.onLayout(changed, left, top, right, bottom);
113 | }
114 |
115 | @Override
116 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
117 | Log.i(TAG, "onMeasure");
118 | super.onMeasure(widthMeasureSpec, heightMeasureSpec);
119 | //自定义View系统默认是EXACTLY模式(具体值或者match_parent),其他模式 AT_MOST(wrap_content)、UNSPECIFIED 需要自行实现
120 | int measuredWidth = measureSize(widthMeasureSpec);
121 | int measuredHeight = measureSize(heightMeasureSpec);
122 | setMeasuredDimension(measuredWidth, measuredHeight);
123 | }
124 |
125 | @Override
126 | protected void onSizeChanged(int w, int h, int oldw, int oldh) {//在 onDraw 前被调用,应该是 View 的尺寸大小发生改变时被调用,在于 Measure 之后
127 | Log.i(TAG, "onSizeChanged");
128 | super.onSizeChanged(w, h, oldw, oldh);
129 | }
130 |
131 | @Override
132 | protected void onDetachedFromWindow() {
133 | Log.i(TAG, "onDetachedFromWindow");
134 | super.onDetachedFromWindow();
135 | }
136 |
137 | @Override
138 | protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) {
139 | Log.i(TAG, "onFocusChanged");
140 | super.onFocusChanged(gainFocus, direction, previouslyFocusedRect);
141 | }
142 |
143 | @Override
144 | public void onWindowFocusChanged(boolean hasWindowFocus) {
145 | Log.i(TAG, "onWindowFocusChanged");
146 | super.onWindowFocusChanged(hasWindowFocus);
147 | }
148 |
149 | /**
150 | * 测量获取当前View设置的实际尺寸大小
151 | *
152 | * @param measureSpec
153 | * @return
154 | */
155 | private int measureSize(int measureSpec) {
156 | int size = 0;
157 | int specMode = MeasureSpec.getMode(measureSpec);
158 | int specSize = MeasureSpec.getSize(measureSpec);
159 | if (specMode == MeasureSpec.EXACTLY) {
160 | size = specSize;
161 | } else {
162 | if (specMode == MeasureSpec.AT_MOST) {
163 | size = Math.min(size, specSize);
164 | }
165 | }
166 | return size;
167 |
168 | }
169 | }
170 |
--------------------------------------------------------------------------------
/app/src/main/java/com/clock/view/basic/SimpleCanvasView.java:
--------------------------------------------------------------------------------
1 | package com.clock.view.basic;
2 |
3 | import android.annotation.TargetApi;
4 | import android.content.Context;
5 | import android.graphics.Canvas;
6 | import android.graphics.Paint;
7 | import android.graphics.RectF;
8 | import android.os.Build;
9 | import android.text.TextPaint;
10 | import android.util.AttributeSet;
11 | import android.view.View;
12 |
13 | /**
14 | * Canvas 练习代码
15 | *
16 | * Created by Clock on 2016/8/3.
17 | */
18 | public class SimpleCanvasView extends View {
19 |
20 | private final static String TAG = SimpleCanvasView.class.getSimpleName();
21 |
22 | public SimpleCanvasView(Context context) {
23 | super(context);
24 | }
25 |
26 | public SimpleCanvasView(Context context, AttributeSet attrs) {
27 | super(context, attrs);
28 | }
29 |
30 | public SimpleCanvasView(Context context, AttributeSet attrs, int defStyleAttr) {
31 | super(context, attrs, defStyleAttr);
32 | }
33 |
34 | @TargetApi(Build.VERSION_CODES.LOLLIPOP)
35 | public SimpleCanvasView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
36 | super(context, attrs, defStyleAttr, defStyleRes);
37 | }
38 |
39 | @Override
40 | protected void onDraw(Canvas canvas) {
41 | super.onDraw(canvas);
42 | canvas.drawARGB(255, 50, 78, 95);//绘制整个Canvas的背景色
43 |
44 | drawText(canvas);
45 | drawPoint(canvas);
46 | drawRect(canvas);
47 | drawOval(canvas);
48 |
49 | }
50 |
51 | /**
52 | * 在Canvas上绘制各种各样的文本
53 | *
54 | * @param canvas
55 | */
56 | private void drawText(Canvas canvas) {
57 |
58 | TextPaint textPaint = new TextPaint();
59 | textPaint.setTextSize(30f);
60 | textPaint.setAntiAlias(true);
61 | Paint.FontMetrics fontMetrics = textPaint.getFontMetrics();
62 |
63 | //普通文本
64 | textPaint.setColor(0xff568532);
65 | canvas.drawText("普通文本", 0, Math.abs(fontMetrics.ascent), textPaint);
66 |
67 | //向下偏移的文本
68 | canvas.save();//保存原先的Canvas绘制坐标系
69 | canvas.translate(0, 50);
70 | textPaint.setColor(0xff261232);
71 | canvas.drawText("向下偏移的文本", 0, Math.abs(fontMetrics.ascent), textPaint);
72 | canvas.restore();//恢复原先的Canvas绘制坐标系
73 |
74 | //向右偏移的文本
75 | canvas.save();
76 | canvas.translate(200, 0);
77 | textPaint.setColor(0xff516232);
78 | canvas.drawText("向右偏移的文本", 0, Math.abs(fontMetrics.ascent), textPaint);
79 | canvas.restore();
80 |
81 | //文本右对齐
82 | canvas.save();
83 | canvas.translate(100, 100);
84 | textPaint.setTextAlign(Paint.Align.RIGHT);//表示drawText的x坐标是文本的结束位置的坐标
85 | textPaint.setColor(0xff257232);
86 | canvas.drawText("文本右对齐", 0, Math.abs(fontMetrics.ascent), textPaint);
87 | canvas.restore();
88 |
89 | //文本居中
90 | canvas.save();
91 | canvas.translate(0, 150);
92 | textPaint.setTextAlign(Paint.Align.CENTER);//表示drawText的x坐标是文本中央位置的坐标
93 | textPaint.setColor(0xff228932);
94 | canvas.drawText("文本居中", 0, Math.abs(fontMetrics.ascent), textPaint);
95 | textPaint.setTextAlign(Paint.Align.LEFT);
96 | canvas.restore();
97 |
98 | //文字加粗
99 | canvas.save();
100 | canvas.translate(0, 200);
101 | textPaint.setColor(0xff228932);
102 | textPaint.setFakeBoldText(true);
103 | canvas.drawText("文字加粗", 0, Math.abs(fontMetrics.ascent), textPaint);
104 | textPaint.setFakeBoldText(false);
105 | canvas.restore();
106 |
107 | //文字加下划线
108 | canvas.save();
109 | canvas.translate(0, 250);
110 | textPaint.setColor(0xff228932);
111 | textPaint.setUnderlineText(true);
112 | canvas.drawText("文字加下划线", 0, Math.abs(fontMetrics.ascent), textPaint);
113 | textPaint.setUnderlineText(false);
114 | canvas.restore();
115 |
116 | //文字加中划线
117 | canvas.save();
118 | canvas.translate(0, 300);
119 | textPaint.setColor(0xff228932);
120 | textPaint.setStrikeThruText(true);
121 | canvas.drawText("文字加中划线", 0, Math.abs(fontMetrics.ascent), textPaint);
122 | textPaint.setStrikeThruText(false);
123 | canvas.restore();
124 |
125 | }
126 |
127 | /**
128 | * 绘制点
129 | *
130 | * @param canvas
131 | */
132 | private void drawPoint(Canvas canvas) {
133 | int halfWidth = getMeasuredWidth() / 2;
134 | Paint paint = new Paint();
135 | paint.setColor(0xff238890);
136 | paint.setStrokeWidth(100);
137 |
138 | //绘制方点
139 | paint.setStrokeCap(Paint.Cap.BUTT);
140 | canvas.drawPoint(halfWidth, 100, paint);
141 |
142 | //绘制圆点
143 | paint.setStrokeCap(Paint.Cap.ROUND);
144 | canvas.drawPoint(halfWidth, 250, paint);
145 |
146 | //绘制方点,感觉和BUTT一样,目前没看到有啥区别
147 | paint.setStrokeCap(Paint.Cap.SQUARE);
148 | canvas.drawPoint(halfWidth, 400, paint);
149 | }
150 |
151 | private void drawRect(Canvas canvas) {
152 |
153 | int width = getMeasuredWidth();
154 | int height = getMeasuredHeight();
155 |
156 | Paint paint = new Paint();
157 | paint.setColor(0xff365618);
158 | paint.setStyle(Paint.Style.STROKE);
159 | paint.setStrokeWidth(20f);
160 | canvas.drawRect((width - 300) / 2, (height - 300) / 2, (width - 300) / 2 + 300, (height - 300) / 2 + 300, paint);
161 |
162 | }
163 |
164 | private void drawOval(Canvas canvas) {
165 | Paint paint = new Paint();
166 | paint.setStyle(Paint.Style.STROKE);
167 | paint.setStrokeWidth(5f);
168 | paint.setColor(0xff990000);
169 | RectF oval = new RectF(0, 300, getMeasuredWidth(), 600);
170 | canvas.drawOval(oval, paint);
171 | }
172 |
173 | @Override
174 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
175 | super.onMeasure(widthMeasureSpec, heightMeasureSpec);
176 | int measuredHeight = measureSize(heightMeasureSpec);
177 | int measuredWidth = measureSize(widthMeasureSpec);
178 | setMeasuredDimension(measuredWidth, measuredHeight);
179 | }
180 |
181 | private int measureSize(int measureSpec) {
182 | int measuredSize = 0;
183 | int mode = MeasureSpec.getMode(measureSpec);
184 | int size = MeasureSpec.getSize(measureSpec);
185 | if (mode == MeasureSpec.EXACTLY) {
186 | measuredSize = size;
187 | } else {
188 | if (mode == MeasureSpec.AT_MOST) {
189 | measuredSize = Math.min(measuredSize, size);
190 | }
191 | }
192 | return measuredSize;
193 | }
194 | }
195 |
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/app/src/main/res/layout/activity_scratch_demo.xml:
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/Scratch/src/main/java/com/clock/scratch/ScratchView.java:
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1 | package com.clock.scratch;
2 |
3 | import android.annotation.TargetApi;
4 | import android.content.Context;
5 | import android.content.res.TypedArray;
6 | import android.graphics.Bitmap;
7 | import android.graphics.BitmapFactory;
8 | import android.graphics.Canvas;
9 | import android.graphics.Paint;
10 | import android.graphics.Path;
11 | import android.graphics.PorterDuff;
12 | import android.graphics.PorterDuffXfermode;
13 | import android.graphics.Rect;
14 | import android.graphics.Shader;
15 | import android.graphics.drawable.BitmapDrawable;
16 | import android.os.AsyncTask;
17 | import android.os.Build;
18 | import android.util.AttributeSet;
19 | import android.view.MotionEvent;
20 | import android.view.View;
21 | import android.view.ViewConfiguration;
22 |
23 | /**
24 | * Created by Clock on 2016/8/26.
25 | */
26 | public class ScratchView extends View {
27 |
28 | private final static String TAG = ScratchView.class.getSimpleName();
29 | /**
30 | * 最小的橡皮擦尺寸大小
31 | */
32 | private final static float DEFAULT_ERASER_SIZE = 60f;
33 | /**
34 | * 默认蒙板的颜色
35 | */
36 | private final static int DEFAULT_MASKER_COLOR = 0xffcccccc;
37 | /**
38 | * 默认擦除比例
39 | */
40 | private final static int DEFAULT_PERCENT = 70;
41 | /**
42 | * 最大擦除比例
43 | */
44 | private final static int MAX_PERCENT = 100;
45 |
46 | /**
47 | * 遮罩 Paint
48 | */
49 | private Paint mMaskPaint;
50 | /**
51 | * 产生遮罩效果的 Bitmap
52 | */
53 | private Bitmap mMaskBitmap;
54 | /**
55 | * 绘制遮罩的 Canvas
56 | */
57 | private Canvas mMaskCanvas;
58 | /**
59 | * 普通绘制 Bitmap 用的 Paint
60 | */
61 | private Paint mBitmapPaint;
62 | /**
63 | * 水印
64 | */
65 | private BitmapDrawable mWatermark;
66 | /**
67 | * 橡皮檫画笔
68 | */
69 | private Paint mErasePaint;
70 | /**
71 | * 擦除轨迹
72 | */
73 | private Path mErasePath;
74 | /**
75 | * 擦除效果起始点的x坐标
76 | */
77 | private float mStartX;
78 | /**
79 | * 擦除效果起始点的y坐标
80 | */
81 | private float mStartY;
82 | /**
83 | * 最小滑动距离
84 | */
85 | private int mTouchSlop;
86 | /**
87 | * 完成擦除
88 | */
89 | private boolean mIsCompleted = false;
90 | /**
91 | * 最大擦除比例
92 | */
93 | private int mMaxPercent = DEFAULT_PERCENT;
94 | /**
95 | * 当前擦除比例
96 | */
97 | private int mPercent = 0;
98 | /**
99 | * 存放蒙层像素信息的数组
100 | */
101 | private int mPixels[];
102 |
103 | private EraseStatusListener mEraseStatusListener;
104 |
105 | public ScratchView(Context context) {
106 | super(context);
107 | TypedArray typedArray = context.obtainStyledAttributes(R.styleable.ScratchView);
108 | init(typedArray);
109 | }
110 |
111 | public ScratchView(Context context, AttributeSet attrs) {
112 | super(context, attrs);
113 | TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.ScratchView);
114 | init(typedArray);
115 | }
116 |
117 | public ScratchView(Context context, AttributeSet attrs, int defStyleAttr) {
118 | super(context, attrs, defStyleAttr);
119 | TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.ScratchView, defStyleAttr, 0);
120 | init(typedArray);
121 | }
122 |
123 | @TargetApi(Build.VERSION_CODES.LOLLIPOP)
124 | public ScratchView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
125 | super(context, attrs, defStyleAttr, defStyleRes);
126 | TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.ScratchView, defStyleAttr, defStyleRes);
127 | init(typedArray);
128 | }
129 |
130 | private void init(TypedArray typedArray) {
131 | int maskColor = typedArray.getColor(R.styleable.ScratchView_maskColor, DEFAULT_MASKER_COLOR);
132 | int watermarkResId = typedArray.getResourceId(R.styleable.ScratchView_watermark, -1);
133 | float eraseSize = typedArray.getFloat(R.styleable.ScratchView_eraseSize, DEFAULT_ERASER_SIZE);
134 | mMaxPercent = typedArray.getInt(R.styleable.ScratchView_maxPercent, DEFAULT_PERCENT);
135 | typedArray.recycle();
136 |
137 | mMaskPaint = new Paint();
138 | mMaskPaint.setAntiAlias(true);//抗锯齿
139 | mMaskPaint.setDither(true);//防抖
140 | setMaskColor(maskColor);
141 |
142 | mBitmapPaint = new Paint();
143 | mBitmapPaint.setAntiAlias(true);
144 | mBitmapPaint.setDither(true);
145 |
146 | setWatermark(watermarkResId);
147 |
148 | mErasePaint = new Paint();
149 | mErasePaint.setAntiAlias(true);
150 | mErasePaint.setDither(true);
151 | mErasePaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));//设置擦除效果
152 | mErasePaint.setStyle(Paint.Style.STROKE);
153 | mErasePaint.setStrokeCap(Paint.Cap.ROUND);//设置笔尖形状,让绘制的边缘圆滑
154 | setEraserSize(eraseSize);
155 |
156 | mErasePath = new Path();
157 |
158 | ViewConfiguration viewConfiguration = ViewConfiguration.get(getContext());
159 | mTouchSlop = viewConfiguration.getScaledTouchSlop();
160 |
161 | }
162 |
163 | /**
164 | * 设置橡皮檫尺寸大小(默认大小是 60)
165 | *
166 | * @param eraserSize 橡皮檫尺寸大小
167 | */
168 | public void setEraserSize(float eraserSize) {
169 | mErasePaint.setStrokeWidth(eraserSize);
170 | }
171 |
172 | /**
173 | * 设置蒙板颜色
174 | *
175 | * @param color 十六进制颜色值,如:0xffff0000(不透明的红色)
176 | */
177 | public void setMaskColor(int color) {
178 | mMaskPaint.setColor(color);
179 | }
180 |
181 | /**
182 | * 设置最大的擦除比例
183 | *
184 | * @param max 大于0,小于等于100
185 | */
186 | public void setMaxPercent(int max) {
187 | if (max > 100 || max <= 0) {
188 | return;
189 | }
190 | this.mMaxPercent = max;
191 | }
192 |
193 | @Override
194 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
195 | super.onMeasure(widthMeasureSpec, heightMeasureSpec);
196 | int measuredWidth = measureSize(widthMeasureSpec);
197 | int measuredHeight = measureSize(heightMeasureSpec);
198 | setMeasuredDimension(measuredWidth, measuredHeight);
199 | }
200 |
201 | @Override
202 | protected void onDraw(Canvas canvas) {
203 | super.onDraw(canvas);
204 | canvas.drawBitmap(mMaskBitmap, 0, 0, mBitmapPaint);//绘制图层遮罩
205 | }
206 |
207 | @Override
208 | public boolean onTouchEvent(MotionEvent event) {
209 | int action = event.getAction();
210 | switch (action) {
211 | case MotionEvent.ACTION_DOWN:
212 | startErase(event.getX(), event.getY());
213 | invalidate();
214 | return true;
215 | case MotionEvent.ACTION_MOVE:
216 | erase(event.getX(), event.getY());
217 | invalidate();
218 | return true;
219 | case MotionEvent.ACTION_UP:
220 | stopErase();
221 | invalidate();
222 | return true;
223 | default:
224 | break;
225 | }
226 | return super.onTouchEvent(event);
227 | }
228 |
229 | @Override
230 | protected void onSizeChanged(int w, int h, int oldw, int oldh) {
231 | super.onSizeChanged(w, h, oldw, oldh);
232 | createMasker(w, h);
233 | }
234 |
235 | /**
236 | * 创建蒙层
237 | *
238 | * @param width
239 | * @param height
240 | */
241 | private void createMasker(int width, int height) {
242 | mMaskBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
243 | mMaskCanvas = new Canvas(mMaskBitmap);
244 | Rect rect = new Rect(0, 0, width, height);
245 | mMaskCanvas.drawRect(rect, mMaskPaint);//绘制生成和控件大小一致的遮罩 Bitmap
246 |
247 | if (mWatermark != null) {
248 | Rect bounds = new Rect(rect);
249 | mWatermark.setBounds(bounds);
250 | mWatermark.draw(mMaskCanvas);
251 | }
252 |
253 | mPixels = new int[width * height];
254 | }
255 |
256 | private int measureSize(int measureSpec) {
257 | int size = 0;
258 | int specMode = MeasureSpec.getMode(measureSpec);
259 | int specSize = MeasureSpec.getSize(measureSpec);
260 | if (specMode == MeasureSpec.EXACTLY) {
261 | size = specSize;
262 | } else {
263 | if (specMode == MeasureSpec.AT_MOST) {
264 | size = Math.min(size, specSize);
265 | }
266 | }
267 | return size;
268 | }
269 |
270 | /**
271 | * 开始擦除
272 | *
273 | * @param x
274 | * @param y
275 | */
276 | private void startErase(float x, float y) {
277 | mErasePath.reset();
278 | mErasePath.moveTo(x, y);
279 | this.mStartX = x;
280 | this.mStartY = y;
281 | }
282 |
283 | /**
284 | * 擦除
285 | *
286 | * @param x
287 | * @param y
288 | */
289 | private void erase(float x, float y) {
290 | int dx = (int) Math.abs(x - mStartX);
291 | int dy = (int) Math.abs(y - mStartY);
292 | if (dx >= mTouchSlop || dy >= mTouchSlop) {
293 | this.mStartX = x;
294 | this.mStartY = y;
295 |
296 | mErasePath.lineTo(x, y);
297 | mMaskCanvas.drawPath(mErasePath, mErasePaint);
298 | //updateErasePercent();
299 |
300 | mErasePath.reset();
301 | mErasePath.moveTo(mStartX, mStartY);
302 | }
303 | }
304 |
305 | private void updateErasePercent() {
306 | int width = getWidth();
307 | int height = getHeight();
308 | new AsyncTask() {
309 |
310 | @Override
311 | protected Boolean doInBackground(Integer... params) {
312 | int width = params[0];
313 | int height = params[1];
314 | mMaskBitmap.getPixels(mPixels, 0, width, 0, 0, width, height);//获取覆盖图层中所有的像素信息,stride用于表示一行的像素个数有多少
315 |
316 | float erasePixelCount = 0;//擦除的像素个数
317 | float totalPixelCount = width * height;//总像素个数
318 |
319 | for (int pos = 0; pos < totalPixelCount; pos++) {
320 | if (mPixels[pos] == 0) {//透明的像素值为0
321 | erasePixelCount++;
322 | }
323 | }
324 |
325 | int percent = 0;
326 | if (erasePixelCount >= 0 && totalPixelCount > 0) {
327 | percent = Math.round(erasePixelCount * 100 / totalPixelCount);
328 | publishProgress(percent);
329 | }
330 |
331 | return percent >= mMaxPercent;
332 | }
333 |
334 | @Override
335 | protected void onProgressUpdate(Integer... values) {
336 | super.onProgressUpdate(values);
337 | mPercent = values[0];
338 | onPercentUpdate();
339 | }
340 |
341 | @Override
342 | protected void onPostExecute(Boolean result) {
343 | super.onPostExecute(result);
344 | if (result && !mIsCompleted) {//标记擦除,并完成回调
345 | mIsCompleted = true;
346 | if (mEraseStatusListener != null) {
347 | mEraseStatusListener.onCompleted(ScratchView.this);
348 | }
349 | }
350 | }
351 |
352 | }.execute(width, height);
353 | }
354 |
355 | /**
356 | * 停止擦除
357 | */
358 | private void stopErase() {
359 | this.mStartX = 0;
360 | this.mStartY = 0;
361 | mErasePath.reset();
362 | updateErasePercent();
363 | }
364 |
365 | private void onPercentUpdate() {
366 | if (mEraseStatusListener != null) {
367 | mEraseStatusListener.onProgress(mPercent);
368 | }
369 | }
370 |
371 | /**
372 | * 设置擦除监听器
373 | *
374 | * @param listener
375 | */
376 | public void setEraseStatusListener(EraseStatusListener listener) {
377 | this.mEraseStatusListener = listener;
378 | }
379 |
380 | /**
381 | * 设置水印图标
382 | *
383 | * @param resId 图标资源id,-1表示去除水印
384 | */
385 | public void setWatermark(int resId) {
386 | if (resId == -1) {
387 | mWatermark = null;
388 | } else {
389 | Bitmap bitmap = BitmapFactory.decodeResource(getResources(), resId);
390 | mWatermark = new BitmapDrawable(bitmap);
391 | mWatermark.setTileModeXY(Shader.TileMode.REPEAT, Shader.TileMode.REPEAT);
392 | }
393 | }
394 |
395 | /**
396 | * 重置为初始状态
397 | */
398 | public void reset() {
399 | mIsCompleted = false;
400 |
401 | int width = getWidth();
402 | int height = getHeight();
403 | createMasker(width, height);
404 | invalidate();
405 |
406 | updateErasePercent();
407 | }
408 |
409 | /**
410 | * 清除整个图层
411 | */
412 | public void clear() {
413 | int width = getWidth();
414 | int height = getHeight();
415 | mMaskBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
416 | mMaskCanvas = new Canvas(mMaskBitmap);
417 | Rect rect = new Rect(0, 0, width, height);
418 | mMaskCanvas.drawRect(rect, mErasePaint);
419 | invalidate();
420 |
421 | updateErasePercent();
422 | }
423 |
424 |
425 | /**
426 | * 擦除状态监听器
427 | */
428 | public static interface EraseStatusListener {
429 |
430 | /**
431 | * 擦除进度
432 | *
433 | * @param percent 进度值,大于0,小于等于100;
434 | */
435 | public void onProgress(int percent);
436 |
437 | /**
438 | * 擦除完成回调函数
439 | *
440 | * @param view
441 | */
442 | public void onCompleted(View view);
443 | }
444 | }
445 |
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