├── .gitignore ├── .gitmodules ├── .idea ├── caches │ ├── build_file_checksums.ser │ └── gradle_models.ser ├── codeStyles │ └── Project.xml ├── gradle.xml ├── inspectionProfiles │ └── Project_Default.xml ├── misc.xml └── runConfigurations.xml ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── io │ │ └── nano │ │ └── tex │ │ └── test │ │ ├── App.java │ │ ├── MainActivity.java │ │ ├── Samples.java │ │ └── TeXView.java │ └── res │ ├── drawable-v24 │ └── ic_launcher_foreground.xml │ ├── drawable │ └── ic_launcher_background.xml │ ├── layout │ └── activity_main.xml │ ├── menu │ └── main.xml │ ├── mipmap-anydpi-v26 │ ├── ic_launcher.xml │ └── ic_launcher_round.xml │ ├── mipmap-hdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-mdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xxhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xxxhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ └── values │ ├── colors.xml │ ├── strings.xml │ └── styles.xml ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── libtex ├── .gitignore ├── build.gradle ├── consumer-rules.pro └── src │ └── main │ ├── .gitignore │ ├── AndroidManifest.xml │ ├── java │ └── io │ │ └── nano │ │ └── tex │ │ ├── ActionRecorder.java │ │ ├── Alignment.java │ │ ├── Font.java │ │ ├── Graphics2D.java │ │ ├── LaTeX.java │ │ ├── Rect.java │ │ ├── TeXException.java │ │ ├── TeXRender.java │ │ ├── TextLayout.java │ │ └── res │ │ └── ResManager.java │ ├── jni │ ├── Android.mk │ ├── Application.mk │ └── port │ │ ├── graphics_android.cpp │ │ ├── graphics_android.h │ │ ├── jni_def.cpp │ │ ├── jni_def.h │ │ ├── jni_help.cpp │ │ ├── jni_help.h │ │ ├── jni_latex.cpp │ │ ├── jni_log.h │ │ └── jni_render.cpp │ └── res │ └── values │ └── strings.xml ├── readme ├── example.jpg └── logo.svg └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/libraries 5 | /.idea/modules.xml 6 | /.idea/workspace.xml 7 | .DS_Store 8 | /build 9 | /captures 10 | .externalNativeBuild 11 | 12 | 13 | app/src/main/assets/SAMPLES.tex 14 | -------------------------------------------------------------------------------- /.gitmodules: -------------------------------------------------------------------------------- 1 | [submodule "libtex/src/main/jni/tex"] 2 | path = libtex/src/main/jni/tex 3 | url = git@github.com:NanoMichael/cLaTeXMath.git 4 | shallow = true 5 | -------------------------------------------------------------------------------- /.idea/caches/build_file_checksums.ser: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/NanoMichael/AndroidLaTeXMath/c0159021c7349656b38bb4a702234f4ccc76d4d3/.idea/caches/build_file_checksums.ser -------------------------------------------------------------------------------- /.idea/caches/gradle_models.ser: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/NanoMichael/AndroidLaTeXMath/c0159021c7349656b38bb4a702234f4ccc76d4d3/.idea/caches/gradle_models.ser -------------------------------------------------------------------------------- /.idea/codeStyles/Project.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 15 | 16 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 18 | 19 | -------------------------------------------------------------------------------- /.idea/inspectionProfiles/Project_Default.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 7 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 17 | 27 | 28 | 29 | 30 | 31 | 32 | 34 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ![logo](readme/logo.svg) 2 | 3 | Library for displaying LaTeX formulas on Android. It use [cLaTeXMath](https://github.com/NanoMichael/cLaTeXMath) to parse and render LaTeX code. The picture below demonstrate the demo application. 4 | 5 | ![demo](readme/example.jpg) 6 | 7 | # Installation 8 | 9 | Library is available in jcenter repository, add this script to your build.gradle file to install: 10 | 11 | ```gradle 12 | implementation 'io.nano:android-tex:1.0.0' 13 | ``` 14 | 15 | # ProGuard 16 | 17 | Add the following rule to your proguard config file: 18 | 19 | ``` 20 | -keep class io.nano.tex.** {*;} 21 | ``` 22 | 23 | # How to use 24 | 25 | First, initialize the library: 26 | 27 | ```java 28 | // ... code inside an Activity or Application 29 | @override 30 | public void onCreate() { 31 | // ... some other code 32 | // Initialize the LaTeX engine. Call of this function will copy the 33 | // "TeX resources" from apk into the data files directory of the 34 | // host application, and parse the "TeX resources", it may takes a 35 | // long time, you may call it from a background thread. 36 | if (!LaTeX.isInitialized()) { 37 | LaTeX.instance().init(getApplicationContext()); 38 | } 39 | } 40 | ``` 41 | 42 | Then, parse the given LaTeX code: 43 | 44 | ```java 45 | String code = "\\int_{now}^{\\infty} \\text{Keep trying}"; 46 | TeXRender r = LaTeX.instance().parse( 47 | code, // LaTeX code to parse 48 | 720, // logical width of the graphics context (in pixel) 49 | 20, // font size 50 | 10, // space between 2 lines (in pixel) 51 | Color.DKGRAY // foreground color 52 | ); 53 | ``` 54 | 55 | Last, just draw it: 56 | 57 | ```java 58 | @override 59 | protected void onDraw(Canvas canvas) { 60 | Graphics2D g2 = new Graphics2D(); 61 | g2.setCanvas(canvas); 62 | // draw the formula on the coordinate (10, 10) 63 | r.draw(g2, 10, 10); 64 | } 65 | ``` 66 | 67 | Very simple. For more details, please check out the demo app of this project. 68 | 69 | # Build by yourself 70 | 71 | First make sure you have a NDK that the version must be `>=4.9` installed. Then add the following script to your `local.properties` file: 72 | 73 | ``` 74 | ndk.dir=/your/NDK/dir 75 | ``` 76 | 77 | Update the latest `C++` implementation using `git`: 78 | 79 | ```sh 80 | git submodule init --recursive 81 | git submodule update --remote 82 | ``` 83 | 84 | Now everything is OK, just build it. 85 | 86 | # License 87 | 88 | This project is under the [Apache-2.0](http://www.apache.org/licenses/LICENSE-2.0) 89 | 90 | ``` 91 | Copyright 2018 Nano Michael 92 | 93 | Licensed under the Apache License, Version 2.0 (the "License"); 94 | you may not use this file except in compliance with the License. 95 | You may obtain a copy of the License at 96 | 97 | http://www.apache.org/licenses/LICENSE-2.0 98 | 99 | Unless required by applicable law or agreed to in writing, software 100 | distributed under the License is distributed on an "AS IS" BASIS, 101 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 102 | See the License for the specific language governing permissions and 103 | limitations under the License. 104 | ``` 105 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion compileSdk 5 | 6 | compileOptions { 7 | sourceCompatibility JavaVersion.VERSION_1_7 8 | targetCompatibility JavaVersion.VERSION_1_7 9 | } 10 | 11 | defaultConfig { 12 | applicationId "io.nano.tex.test" 13 | minSdkVersion minSdk 14 | targetSdkVersion compileSdk 15 | versionCode 1 16 | versionName "1.0" 17 | } 18 | 19 | buildTypes { 20 | release { 21 | minifyEnabled false 22 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 23 | } 24 | } 25 | 26 | aaptOptions { 27 | noCompress "tex" 28 | } 29 | 30 | tasks.withType(JavaCompile) { task -> 31 | task.doFirst { 32 | println 'COPY SAMPLES INTO ASSETS' 33 | copy { 34 | from "${project(':libtex').projectDir}/src/main/jni/tex/res/SAMPLES.tex" 35 | into "${projectDir}/src/main/assets" 36 | } 37 | } 38 | } 39 | } 40 | 41 | dependencies { 42 | implementation fileTree(dir: 'libs', include: ['*.jar']) 43 | implementation project(':libtex') 44 | implementation 'com.android.support:appcompat-v7:27.1.1' 45 | } 46 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /app/src/main/java/io/nano/tex/test/App.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex.test; 2 | 3 | import android.app.Application; 4 | 5 | import io.nano.tex.LaTeX; 6 | 7 | /** 8 | * Created by nano on 18-11-12 9 | */ 10 | public class App extends Application { 11 | 12 | @Override 13 | public void onCreate() { 14 | super.onCreate(); 15 | LaTeX.instance().init(this); 16 | } 17 | } 18 | -------------------------------------------------------------------------------- /app/src/main/java/io/nano/tex/test/MainActivity.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex.test; 2 | 3 | import android.os.Bundle; 4 | import android.support.annotation.Nullable; 5 | import android.support.v7.app.AppCompatActivity; 6 | import android.view.Menu; 7 | import android.view.MenuItem; 8 | 9 | import io.nano.tex.LaTeX; 10 | 11 | /** 12 | * Created by nano on 18-11-12 13 | */ 14 | public class MainActivity extends AppCompatActivity { 15 | 16 | private TeXView texView; 17 | private Samples samples; 18 | 19 | @Override 20 | protected void onCreate(@Nullable Bundle savedInstanceState) { 21 | super.onCreate(savedInstanceState); 22 | setContentView(R.layout.activity_main); 23 | samples = new Samples(this); 24 | samples.readSamples(); 25 | texView = findViewById(R.id.tex); 26 | } 27 | 28 | @Override 29 | public boolean onCreateOptionsMenu(Menu menu) { 30 | getMenuInflater().inflate(R.menu.main, menu); 31 | return super.onCreateOptionsMenu(menu); 32 | } 33 | 34 | @Override 35 | public boolean onOptionsItemSelected(MenuItem item) { 36 | switch (item.getItemId()) { 37 | case R.id.next_sample: 38 | nextSample(); 39 | break; 40 | case R.id.debug: 41 | switchDebug(item); 42 | break; 43 | } 44 | return super.onOptionsItemSelected(item); 45 | } 46 | 47 | private void nextSample() { 48 | texView.setLaTeX(samples.next()); 49 | } 50 | 51 | private void switchDebug(MenuItem item) { 52 | boolean isDebug = LaTeX.instance().isDebug(); 53 | LaTeX.instance().setDebug(!isDebug); 54 | item.setChecked(LaTeX.instance().isDebug()); 55 | texView.invalidateRender(); 56 | } 57 | } 58 | 59 | -------------------------------------------------------------------------------- /app/src/main/java/io/nano/tex/test/Samples.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex.test; 2 | 3 | import android.content.Context; 4 | 5 | import java.io.BufferedReader; 6 | import java.io.IOException; 7 | import java.io.InputStreamReader; 8 | import java.util.ArrayList; 9 | import java.util.List; 10 | 11 | /** 12 | * Created by nano on 18-11-13 13 | */ 14 | public class Samples { 15 | 16 | private Context context; 17 | private int index = 0; 18 | private List samples = new ArrayList<>(); 19 | 20 | public Samples(Context context) { 21 | this.context = context; 22 | } 23 | 24 | public void readSamples() { 25 | try { 26 | InputStreamReader ir = new InputStreamReader(context.getAssets().open("SAMPLES.tex")); 27 | BufferedReader reader = new BufferedReader(ir); 28 | String line = ""; 29 | StringBuilder sb = new StringBuilder(); 30 | while ((line = reader.readLine()) != null) { 31 | if (!line.isEmpty() && !isSpace(line) && isSeparator(line)) { 32 | addSample(sb.toString()); 33 | sb.delete(0, sb.length()); 34 | } else if (!line.isEmpty() && !isSpace(line)) { 35 | sb.append(line).append('\n'); 36 | } 37 | } 38 | } catch (IOException e) { 39 | e.printStackTrace(); 40 | } 41 | } 42 | 43 | private boolean isSpace(String str) { 44 | for (int i = 0; i < str.length(); i++) { 45 | if (!Character.isSpaceChar(str.charAt(i))) return false; 46 | } 47 | return true; 48 | } 49 | 50 | private boolean isSeparator(String str) { 51 | for (int i = 0; i < str.length(); i++) { 52 | if (str.charAt(i) != '%') return false; 53 | } 54 | return true; 55 | } 56 | 57 | private void addSample(String sample) { 58 | if (sample == null || sample.isEmpty() || isSpace(sample)) return; 59 | samples.add(sample); 60 | } 61 | 62 | public String next() { 63 | if (index >= samples.size()) index = 0; 64 | String x = samples.get(index); 65 | index++; 66 | return x; 67 | } 68 | } 69 | -------------------------------------------------------------------------------- /app/src/main/java/io/nano/tex/test/TeXView.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex.test; 2 | 3 | import android.content.Context; 4 | import android.graphics.Canvas; 5 | import android.graphics.Color; 6 | import android.os.Build; 7 | import android.support.annotation.Nullable; 8 | import android.support.annotation.RequiresApi; 9 | import android.util.AttributeSet; 10 | import android.view.View; 11 | 12 | import io.nano.tex.Graphics2D; 13 | import io.nano.tex.LaTeX; 14 | import io.nano.tex.TeXRender; 15 | 16 | /** 17 | * Created by nano on 18-11-12 18 | */ 19 | public class TeXView extends View { 20 | 21 | public TeXView(Context context) { 22 | super(context); 23 | } 24 | 25 | public TeXView(Context context, @Nullable AttributeSet attrs) { 26 | super(context, attrs); 27 | } 28 | 29 | public TeXView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { 30 | super(context, attrs, defStyleAttr); 31 | } 32 | 33 | @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) 34 | public TeXView(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) { 35 | super(context, attrs, defStyleAttr, defStyleRes); 36 | } 37 | 38 | private int textSize = 40; 39 | private TeXRender render; 40 | private Graphics2D g2 = new Graphics2D(); 41 | 42 | public void setLaTeX(String ltx) { 43 | int w = getWidth(); 44 | if (w == 0) w = 2048; 45 | render = LaTeX.instance().parse(ltx, w, textSize, 10, Color.DKGRAY); 46 | requestLayout(); 47 | } 48 | 49 | public void setTextSize(int size) { 50 | textSize = size; 51 | if (render != null) render.setTextSize(size); 52 | requestLayout(); 53 | } 54 | 55 | public void invalidateRender() { 56 | render.invalidateDrawingCache(); 57 | invalidate(); 58 | } 59 | 60 | @Override 61 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 62 | super.onMeasure(widthMeasureSpec, heightMeasureSpec); 63 | if (render == null) return; 64 | int h = render.getHeight(); 65 | setMeasuredDimension(getMeasuredWidth(), h + getPaddingTop() + getPaddingBottom()); 66 | } 67 | 68 | @Override 69 | protected void onDraw(Canvas canvas) { 70 | if (render == null) return; 71 | g2.setCanvas(canvas); 72 | render.draw(g2, getPaddingLeft(), getPaddingTop()); 73 | } 74 | } 75 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 12 | 13 | 19 | 22 | 25 | 26 | 27 | 28 | 34 | 35 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 11 | 16 | 21 | 26 | 31 | 36 | 41 | 46 | 51 | 56 | 61 | 66 | 71 | 76 | 81 | 86 | 91 | 96 | 101 | 106 | 111 | 116 | 121 | 126 | 131 | 136 | 141 | 146 | 151 | 156 | 161 | 166 | 171 | 172 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 6 | 7 | 10 | 11 | 16 | 17 | 18 | -------------------------------------------------------------------------------- /app/src/main/res/menu/main.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 7 | 8 | 12 | 13 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/NanoMichael/AndroidLaTeXMath/c0159021c7349656b38bb4a702234f4ccc76d4d3/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- 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/app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/NanoMichael/AndroidLaTeXMath/c0159021c7349656b38bb4a702234f4ccc76d4d3/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/NanoMichael/AndroidLaTeXMath/c0159021c7349656b38bb4a702234f4ccc76d4d3/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/NanoMichael/AndroidLaTeXMath/c0159021c7349656b38bb4a702234f4ccc76d4d3/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/NanoMichael/AndroidLaTeXMath/c0159021c7349656b38bb4a702234f4ccc76d4d3/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/NanoMichael/AndroidLaTeXMath/c0159021c7349656b38bb4a702234f4ccc76d4d3/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/NanoMichael/AndroidLaTeXMath/c0159021c7349656b38bb4a702234f4ccc76d4d3/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #3F51B5 4 | #303F9F 5 | #FF4081 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | AndroidLaTeXMath 3 | 4 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | // Top-level build file where you can add configuration options common to all sub-projects/modules. 2 | 3 | buildscript { 4 | 5 | ext { 6 | compileSdk = 27 7 | minSdk = 14 8 | 9 | bintrayRepo = 'maven' 10 | bintrayName = 'AndroidLaTeXMath' 11 | 12 | bintrayRepo = 'maven' 13 | bintrayName = 'AndroidLaTeXMath' 14 | 15 | publishedGroupId = 'io.nano' 16 | libraryName = 'AndroidLaTeXMath' 17 | artifact = 'android-tex' 18 | 19 | libraryDesc = 'An efficient LaTeX rendering library on Android.' 20 | 21 | siteUrl = 'https://github.com/NanoMichael/AndroidLaTeXMath' 22 | gitUrl = 'https://github.com/NanoMichael/AndroidLaTeXMath' 23 | 24 | developerId = 'Nano' 25 | developerName = 'Nano' 26 | developerEmail = 'artiano@hotmail.com' 27 | 28 | licenseName = 'The Apache Software License, Version 2.0' 29 | licenseUrl = 'http://www.apache.org/licenses/LICENSE-2.0.txt' 30 | allLicenses = ["Apache-2.0"] 31 | } 32 | 33 | repositories { 34 | google() 35 | jcenter() 36 | } 37 | 38 | dependencies { 39 | classpath 'com.android.tools.build:gradle:3.3.0' 40 | 41 | classpath "com.github.dcendents:android-maven-gradle-plugin:2.1" 42 | classpath "com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4" 43 | 44 | // NOTE: Do not place your application dependencies here; they belong 45 | // in the individual module build.gradle files 46 | } 47 | } 48 | 49 | allprojects { 50 | repositories { 51 | google() 52 | jcenter() 53 | } 54 | } 55 | 56 | task clean(type: Delete) { 57 | delete rootProject.buildDir 58 | } 59 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | # IDE (e.g. Android Studio) users: 3 | # Gradle settings configured through the IDE *will override* 4 | # any settings specified in this file. 5 | # For more details on how to configure your build environment visit 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html 7 | # Specifies the JVM arguments used for the daemon process. 8 | # The setting is particularly useful for tweaking memory settings. 9 | org.gradle.jvmargs=-Xmx1536m 10 | # When configured, Gradle will run in incubating parallel mode. 11 | # This option should only be used with decoupled projects. More details, visit 12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 13 | # org.gradle.parallel=true 14 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/NanoMichael/AndroidLaTeXMath/c0159021c7349656b38bb4a702234f4ccc76d4d3/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Fri Jan 25 20:56:22 CST 2019 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip 7 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Attempt to set APP_HOME 10 | # Resolve links: $0 may be a link 11 | PRG="$0" 12 | # Need this for relative symlinks. 13 | while [ -h "$PRG" ] ; do 14 | ls=`ls -ld "$PRG"` 15 | link=`expr "$ls" : '.*-> \(.*\)$'` 16 | if expr "$link" : '/.*' > /dev/null; then 17 | PRG="$link" 18 | else 19 | PRG=`dirname "$PRG"`"/$link" 20 | fi 21 | done 22 | SAVED="`pwd`" 23 | cd "`dirname \"$PRG\"`/" >/dev/null 24 | APP_HOME="`pwd -P`" 25 | cd "$SAVED" >/dev/null 26 | 27 | APP_NAME="Gradle" 28 | APP_BASE_NAME=`basename "$0"` 29 | 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 31 | DEFAULT_JVM_OPTS="" 32 | 33 | # Use the maximum available, or set MAX_FD != -1 to use that value. 34 | MAX_FD="maximum" 35 | 36 | warn () { 37 | echo "$*" 38 | } 39 | 40 | die () { 41 | echo 42 | echo "$*" 43 | echo 44 | exit 1 45 | } 46 | 47 | # OS specific support (must be 'true' or 'false'). 48 | cygwin=false 49 | msys=false 50 | darwin=false 51 | nonstop=false 52 | case "`uname`" in 53 | CYGWIN* ) 54 | cygwin=true 55 | ;; 56 | Darwin* ) 57 | darwin=true 58 | ;; 59 | MINGW* ) 60 | msys=true 61 | ;; 62 | NONSTOP* ) 63 | nonstop=true 64 | ;; 65 | esac 66 | 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 68 | 69 | # Determine the Java command to use to start the JVM. 70 | if [ -n "$JAVA_HOME" ] ; then 71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 72 | # IBM's JDK on AIX uses strange locations for the executables 73 | JAVACMD="$JAVA_HOME/jre/sh/java" 74 | else 75 | JAVACMD="$JAVA_HOME/bin/java" 76 | fi 77 | if [ ! -x "$JAVACMD" ] ; then 78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 79 | 80 | Please set the JAVA_HOME variable in your environment to match the 81 | location of your Java installation." 82 | fi 83 | else 84 | JAVACMD="java" 85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 86 | 87 | Please set the JAVA_HOME variable in your environment to match the 88 | location of your Java installation." 89 | fi 90 | 91 | # Increase the maximum file descriptors if we can. 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 93 | MAX_FD_LIMIT=`ulimit -H -n` 94 | if [ $? -eq 0 ] ; then 95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 96 | MAX_FD="$MAX_FD_LIMIT" 97 | fi 98 | ulimit -n $MAX_FD 99 | if [ $? -ne 0 ] ; then 100 | warn "Could not set maximum file descriptor limit: $MAX_FD" 101 | fi 102 | else 103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 104 | fi 105 | fi 106 | 107 | # For Darwin, add options to specify how the application appears in the dock 108 | if $darwin; then 109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 110 | fi 111 | 112 | # For Cygwin, switch paths to Windows format before running java 113 | if $cygwin ; then 114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 116 | JAVACMD=`cygpath --unix "$JAVACMD"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Escape application args 158 | save () { 159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 160 | echo " " 161 | } 162 | APP_ARGS=$(save "$@") 163 | 164 | # Collect all arguments for the java command, following the shell quoting and substitution rules 165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 166 | 167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong 168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then 169 | cd "$(dirname "$0")" 170 | fi 171 | 172 | exec "$JAVACMD" "$@" 173 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | set DIRNAME=%~dp0 12 | if "%DIRNAME%" == "" set DIRNAME=. 13 | set APP_BASE_NAME=%~n0 14 | set APP_HOME=%DIRNAME% 15 | 16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 17 | set DEFAULT_JVM_OPTS= 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windows variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | 53 | :win9xME_args 54 | @rem Slurp the command line arguments. 55 | set CMD_LINE_ARGS= 56 | set _SKIP=2 57 | 58 | :win9xME_args_slurp 59 | if "x%~1" == "x" goto execute 60 | 61 | set CMD_LINE_ARGS=%* 62 | 63 | :execute 64 | @rem Setup the command line 65 | 66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 67 | 68 | @rem Execute Gradle 69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 70 | 71 | :end 72 | @rem End local scope for the variables with windows NT shell 73 | if "%ERRORLEVEL%"=="0" goto mainEnd 74 | 75 | :fail 76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 77 | rem the _cmd.exe /c_ return code! 78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 79 | exit /b 1 80 | 81 | :mainEnd 82 | if "%OS%"=="Windows_NT" endlocal 83 | 84 | :omega 85 | -------------------------------------------------------------------------------- /libtex/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /libtex/build.gradle: -------------------------------------------------------------------------------- 1 | import org.apache.tools.ant.taskdefs.condition.Os 2 | 3 | apply plugin: 'com.android.library' 4 | apply plugin: 'com.github.dcendents.android-maven' 5 | apply plugin: 'com.jfrog.bintray' 6 | 7 | android { 8 | compileSdkVersion compileSdk 9 | 10 | compileOptions { 11 | sourceCompatibility JavaVersion.VERSION_1_7 12 | targetCompatibility JavaVersion.VERSION_1_7 13 | } 14 | 15 | defaultConfig { 16 | minSdkVersion minSdk 17 | targetSdkVersion compileSdk 18 | versionCode 1 19 | versionName "1.0.0" 20 | 21 | consumerProguardFiles 'consumer-rules.pro' 22 | } 23 | 24 | buildTypes { 25 | release { 26 | minifyEnabled false 27 | } 28 | } 29 | 30 | sourceSets.main { 31 | jni.srcDirs = [] 32 | jniLibs.srcDirs 'src/main/libs' 33 | } 34 | 35 | def ndkBuild = ndkBuildCmd() 36 | 37 | task buildTeX(type: Exec) { 38 | workingDir file('src/main') 39 | commandLine ndkBuild 40 | } 41 | 42 | tasks.withType(JavaCompile) { task -> task.dependsOn buildTeX } 43 | 44 | task cleanNative(type: Exec) { 45 | workingDir file('src/main') 46 | commandLine ndkBuild, 'clean' 47 | } 48 | 49 | clean.dependsOn cleanNative 50 | 51 | tasks.withType(JavaCompile) { 52 | it.doLast { task -> 53 | println "COPY TEX RESOURCES INTO CLASSES" 54 | copy { 55 | from "${projectDir}/src/main/jni/tex/res" 56 | into "${task.destinationDir}/io/nano/tex/res" 57 | } 58 | } 59 | } 60 | } 61 | 62 | def ndkBuildCmd() { 63 | if (System.env.ANDROID_NDK_ROOT != null) return System.env.ANDROID_NDK_ROOT 64 | Properties prop = new Properties() 65 | prop.load(project.rootProject.file('local.properties').newDataInputStream()) 66 | def ndkDir = prop.getProperty('ndk.dir', null) 67 | if (ndkDir == null) throw new GradleException("NDK location not found.") 68 | def ndkBuild = ndkDir + "/ndk-build" 69 | if (Os.isFamily(Os.FAMILY_WINDOWS)) ndkBuild += ".cmd" 70 | return ndkBuild 71 | } 72 | 73 | dependencies { 74 | implementation fileTree(dir: 'libs', include: ['*.jar']) 75 | } 76 | 77 | group = publishedGroupId 78 | version = android.defaultConfig.versionName 79 | 80 | install { 81 | repositories.mavenInstaller { 82 | pom.project { 83 | packaging 'aar' 84 | groupId publishedGroupId 85 | artifactId artifact 86 | 87 | name libraryName 88 | description libraryDesc 89 | url siteUrl 90 | 91 | licenses { 92 | license { 93 | name licenseName 94 | url licenseUrl 95 | } 96 | } 97 | developers { 98 | developer { 99 | id developerId 100 | name developerName 101 | email developerEmail 102 | } 103 | } 104 | scm { 105 | connection gitUrl 106 | developerConnection gitUrl 107 | url siteUrl 108 | } 109 | } 110 | } 111 | } 112 | 113 | task javadoc(type: Javadoc) { 114 | source = android.sourceSets.main.java.srcDirs 115 | classpath += project.files(android.getBootClasspath().join(File.pathSeparator)) 116 | destinationDir = file("../javadoc/") 117 | failOnError false 118 | } 119 | 120 | task javadocJar(type: Jar) { 121 | classifier = 'javadoc' 122 | from javadoc.destinationDir 123 | } 124 | 125 | task androidSourcesJar(type: Jar) { 126 | classifier = 'sources' 127 | from android.sourceSets.main.java.srcDirs 128 | } 129 | 130 | artifacts { 131 | archives androidSourcesJar 132 | archives javadocJar 133 | } 134 | 135 | bintray { 136 | Properties properties = new Properties() 137 | properties.load(project.rootProject.file('local.properties').newDataInputStream()) 138 | 139 | user = properties.getProperty("bintray.user") 140 | key = properties.getProperty("bintray.apikey") 141 | 142 | configurations = ['archives'] 143 | pkg { 144 | repo = bintrayRepo 145 | name = bintrayName 146 | desc = libraryDesc 147 | websiteUrl = siteUrl 148 | vcsUrl = gitUrl 149 | licenses = allLicenses 150 | dryRun = false 151 | publish = true 152 | override = false 153 | publicDownloadNumbers = true 154 | version { 155 | desc = libraryDesc 156 | } 157 | } 158 | } 159 | -------------------------------------------------------------------------------- /libtex/consumer-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -keep class io.nano.tex.** {*;} -------------------------------------------------------------------------------- /libtex/src/main/.gitignore: -------------------------------------------------------------------------------- 1 | /libs 2 | /obj 3 | -------------------------------------------------------------------------------- /libtex/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | -------------------------------------------------------------------------------- /libtex/src/main/java/io/nano/tex/ActionRecorder.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex; 2 | 3 | import android.util.Log; 4 | 5 | import java.util.LinkedList; 6 | import java.util.List; 7 | 8 | /** 9 | * Created by nano on 18-11-9 10 | *

11 | * To record the operations on {@link Graphics2D}. 12 | */ 13 | final class ActionRecorder { 14 | 15 | private static final String TAG = "ActionRecorder"; 16 | 17 | private static final byte ACT_setFont = 0; 18 | private static final byte ACT_setColor = 1; 19 | private static final byte ACT_setStrokeWidth = 2; 20 | private static final byte ACT_setStroke = 3; 21 | private static final byte ACT_translate = 4; 22 | private static final byte ACT_scale = 5; 23 | private static final byte ACT_rotate = 6; 24 | private static final byte ACT_reset = 7; 25 | private static final byte ACT_drawChar = 8; 26 | private static final byte ACT_drawText = 9; 27 | private static final byte ACT_drawLine = 10; 28 | private static final byte ACT_drawRect = 11; 29 | private static final byte ACT_fillRect = 12; 30 | private static final byte ACT_drawRoundRect = 13; 31 | private static final byte ACT_fillRoundRect = 14; 32 | 33 | private static final class Action { 34 | byte action; 35 | Object arg; 36 | float[] args; 37 | 38 | Action(byte action, Object arg, float[] args) { 39 | this.action = action; 40 | this.arg = arg; 41 | this.args = args; 42 | } 43 | 44 | @Override 45 | public String toString() { 46 | StringBuilder builder = new StringBuilder(); 47 | builder 48 | .append("{ action: ") 49 | .append(action) 50 | .append(", arg: ") 51 | .append(arg) 52 | .append(", args: ["); 53 | if (args == null) builder.append("null"); 54 | else for (float x : args) builder.append(x).append(", "); 55 | builder.append("] }"); 56 | return builder.toString(); 57 | } 58 | } 59 | 60 | private List actions = new LinkedList<>(); 61 | private Action origin = new Action(ACT_translate, null, new float[]{0, 0}); 62 | 63 | ActionRecorder() { 64 | actions.add(origin); 65 | } 66 | 67 | void setPosition(float x, float y) { 68 | origin.args[0] = x; 69 | origin.args[1] = y; 70 | } 71 | 72 | void record(int action, Object arg, float[] args) { 73 | Action act = new Action((byte) action, arg, args); 74 | actions.add(act); 75 | } 76 | 77 | void play(Graphics2D g2) { 78 | for (Action act : actions) { 79 | if (BuildConfig.DEBUG) Log.d(TAG, act.toString()); 80 | play(g2, act); 81 | } 82 | } 83 | 84 | private void play(Graphics2D g2, Action act) { 85 | if (act == null) return; 86 | switch (act.action) { 87 | case ACT_setFont: 88 | g2.setFont((Font) act.arg); 89 | break; 90 | case ACT_setColor: 91 | g2.setColor((int) act.args[0]); 92 | break; 93 | case ACT_setStrokeWidth: 94 | g2.setStrokeWidth(act.args[0]); 95 | break; 96 | case ACT_setStroke: 97 | g2.setStroke(act.args[0], act.args[1], (int) act.args[2], (int) act.args[3]); 98 | break; 99 | case ACT_translate: 100 | g2.translate(act.args[0], act.args[1]); 101 | break; 102 | case ACT_scale: 103 | g2.scale(act.args[0], act.args[1]); 104 | break; 105 | case ACT_rotate: 106 | g2.rotate(act.args[0], act.args[1], act.args[2]); 107 | break; 108 | case ACT_reset: 109 | g2.reset(); 110 | break; 111 | case ACT_drawChar: 112 | g2.drawChar((char) act.args[0], act.args[1], act.args[2]); 113 | break; 114 | case ACT_drawText: 115 | g2.drawText((String) act.arg, act.args[0], act.args[1]); 116 | break; 117 | case ACT_drawLine: 118 | g2.drawLine(act.args[0], act.args[1], act.args[2], act.args[3]); 119 | break; 120 | case ACT_drawRect: 121 | g2.drawRect(act.args[0], act.args[1], act.args[2], act.args[3]); 122 | break; 123 | case ACT_fillRect: 124 | g2.fillRect(act.args[0], act.args[1], act.args[2], act.args[3]); 125 | break; 126 | case ACT_drawRoundRect: 127 | g2.drawRoundRect( 128 | act.args[0], act.args[1], act.args[2], act.args[3], act.args[4], act.args[5]); 129 | break; 130 | case ACT_fillRoundRect: 131 | g2.fillRoundRect( 132 | act.args[0], act.args[1], act.args[2], act.args[3], act.args[4], act.args[5]); 133 | break; 134 | default: 135 | break; 136 | } 137 | } 138 | } 139 | -------------------------------------------------------------------------------- /libtex/src/main/java/io/nano/tex/Alignment.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex; 2 | 3 | /** 4 | * Created by nano on 18-11-10 5 | *

6 | * Keep in sync with the tex::TeXConstants 7 | */ 8 | public class Alignment { 9 | /** 10 | * Alignment constant: extra space will be added to the right of the formula 11 | */ 12 | public static final int LEFT = 0; 13 | 14 | /** 15 | * Alignment constant: extra space will be added to the left of the formula 16 | */ 17 | public static final int RIGHT = 1; 18 | 19 | /** 20 | * Alignment constant: the formula will be centered in the middle. This 21 | * constant can be used for both horizontal and vertical alignment. 22 | */ 23 | public static final int CENTER = 2; 24 | 25 | /** 26 | * Alignment constant: extra space will be added under the formula 27 | */ 28 | public static final int TOP = 3; 29 | 30 | /** 31 | * Alignment constant: extra space will be added above the formula 32 | */ 33 | public static final int BOTTOM = 4; 34 | } 35 | 36 | -------------------------------------------------------------------------------- /libtex/src/main/java/io/nano/tex/Font.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex; 2 | 3 | import android.graphics.Typeface; 4 | 5 | /** 6 | * Created by nano on 18-11-10 7 | */ 8 | public final class Font { 9 | 10 | private Typeface typeface; 11 | private float size; 12 | 13 | private Font(Typeface typeface, float size) { 14 | this.typeface = typeface; 15 | this.size = size; 16 | } 17 | 18 | public Font deriveFont(int style) { 19 | if (typeface.getStyle() == style) return this; 20 | Typeface typeface = Typeface.create(this.typeface, style); 21 | return new Font(typeface, size); 22 | } 23 | 24 | public Typeface getTypeface() { 25 | return typeface; 26 | } 27 | 28 | public float getSize() { 29 | return size; 30 | } 31 | 32 | public static Font create(String name, int style, float size) { 33 | Typeface typeface = Typeface.create(name, style); 34 | return new Font(typeface, size); 35 | } 36 | 37 | public static Font create(String file, float size) { 38 | Typeface tf = Typeface.createFromFile(file); 39 | return new Font(tf, size); 40 | } 41 | } 42 | -------------------------------------------------------------------------------- /libtex/src/main/java/io/nano/tex/Graphics2D.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex; 2 | 3 | import android.graphics.Canvas; 4 | import android.graphics.Matrix; 5 | import android.graphics.Paint; 6 | import android.graphics.RectF; 7 | import android.graphics.Typeface; 8 | import android.text.TextPaint; 9 | 10 | import java.lang.ref.WeakReference; 11 | 12 | /** 13 | * Created by nano on 18-11-10 14 | *

15 | * Represents a 2D graphics context, wrap the Android's 2D graphics API. The context doesn't use the 16 | * Android API to perform the affine transformations, the rendering result is unpredictable when we 17 | * do it. Android do not support the scale operations to draw texts on {@link Canvas} directly when 18 | * have hardware accelerations since Android 3.0, the reason behind is complicated. We maintain a 19 | * transform matrix ({@link Graphics2D#T}) manually to represents the "affine transformations". 20 | */ 21 | public final class Graphics2D { 22 | 23 | static final String TAG = "io.nano.tex.Graphics2D"; 24 | 25 | /** 26 | * Keep in sync with tex::Cap 27 | */ 28 | private static final int CAP_BUTT = 0, CAP_ROUND = 1, CAP_SQUARE = 2; 29 | /** 30 | * Keep in sync with tex::Join 31 | */ 32 | private static final int JOIN_BEVEL = 0, JOIN_MITER = 1, JOIN_ROUND = 2; 33 | 34 | private static final int SX = Matrix.MSCALE_X; 35 | private static final int SY = Matrix.MSCALE_Y; 36 | private static final int TX = Matrix.MTRANS_X; 37 | private static final int TY = Matrix.MTRANS_Y; 38 | private static final int R = Matrix.MPERSP_0; 39 | private static final int PX = Matrix.MPERSP_1; 40 | private static final int PY = Matrix.MPERSP_2; 41 | 42 | private TextPaint paint = new TextPaint(Paint.ANTI_ALIAS_FLAG); 43 | private WeakReference canvas; 44 | private float[] T = new float[]{1, 0, 0, 0, 1, 0, 0, 0, 0}; 45 | private boolean colorLocked = false; 46 | 47 | public Graphics2D() { 48 | this(null); 49 | } 50 | 51 | public Graphics2D(Canvas canvas) { 52 | if (canvas != null) this.canvas = new WeakReference<>(canvas); 53 | init(); 54 | } 55 | 56 | private void init() { 57 | paint.setAntiAlias(true); 58 | // Do not set dither here since we don't draw any bitmap to accelerate the draw speed 59 | // paint.setDither(true); 60 | /* 61 | * Do not use subpixel feature here since the subpixel OP will cause the drawing element 62 | * change its position dynamically, we need exactly the right position here 63 | */ 64 | // paint.setSubpixelText(true); 65 | paint.setTextSize(46); 66 | } 67 | 68 | public void setCanvas(Canvas canvas) { 69 | this.canvas = new WeakReference<>(canvas); 70 | } 71 | 72 | public Canvas getCanvas() { 73 | if (canvas == null) return null; 74 | return canvas.get(); 75 | } 76 | 77 | public Paint getPaint() { 78 | return paint; 79 | } 80 | 81 | public void setFont(Font font) { 82 | if (font == null) { 83 | paint.setTypeface(Typeface.DEFAULT); 84 | paint.setTextSize(46); 85 | } else { 86 | paint.setTypeface(font.getTypeface()); 87 | paint.setTextSize(font.getSize()); 88 | } 89 | } 90 | 91 | public void lockColor() { 92 | colorLocked = true; 93 | } 94 | 95 | public void unlockColor() { 96 | colorLocked = false; 97 | } 98 | 99 | public void setColor(int c) { 100 | // Do not allow the drawing op to change the color of the context if the color is locked 101 | if (colorLocked) return; 102 | paint.setColor(c); 103 | } 104 | 105 | public void setStrokeWidth(float width) { 106 | paint.setStrokeWidth(width); 107 | } 108 | 109 | public void setStroke(float width, float miterLimit, int cap, int join) { 110 | paint.setStrokeWidth(width); 111 | paint.setStrokeMiter(miterLimit); 112 | switch (cap) { 113 | case CAP_BUTT: 114 | paint.setStrokeCap(Paint.Cap.BUTT); 115 | break; 116 | case CAP_ROUND: 117 | paint.setStrokeCap(Paint.Cap.ROUND); 118 | break; 119 | case CAP_SQUARE: 120 | paint.setStrokeCap(Paint.Cap.SQUARE); 121 | break; 122 | default: 123 | break; 124 | } 125 | switch (join) { 126 | case JOIN_BEVEL: 127 | paint.setStrokeJoin(Paint.Join.BEVEL); 128 | break; 129 | case JOIN_MITER: 130 | paint.setStrokeJoin(Paint.Join.MITER); 131 | break; 132 | case JOIN_ROUND: 133 | paint.setStrokeJoin(Paint.Join.ROUND); 134 | break; 135 | default: 136 | break; 137 | } 138 | } 139 | 140 | public void translate(float dx, float dy) { 141 | T[TX] += T[SX] * dx; 142 | T[TY] += T[SY] * dy; 143 | } 144 | 145 | public void scale(float sx, float sy) { 146 | T[SX] *= sx; 147 | T[SY] *= sy; 148 | } 149 | 150 | public void rotate(float angle, float px, float py) { 151 | float r = (float) (angle / Math.PI * 180); 152 | T[R] += r; 153 | T[PX] = x(px); 154 | T[PY] = y(py); 155 | 156 | Canvas canvas = getCanvas(); 157 | if (canvas == null) return; 158 | canvas.rotate(r, px(), py()); 159 | } 160 | 161 | public void reset() { 162 | float r = r(), px = px(), py = py(); 163 | Canvas canvas = getCanvas(); 164 | T = new float[]{1, 0, 0, 0, 1, 0, 0, 0, 0}; 165 | if (canvas == null) return; 166 | canvas.rotate(-r, px, py); 167 | } 168 | 169 | public float sx() { 170 | return T[SX]; 171 | } 172 | 173 | public float sy() { 174 | return T[SY]; 175 | } 176 | 177 | public float px() { 178 | return T[PX]; 179 | } 180 | 181 | public float py() { 182 | return T[PY]; 183 | } 184 | 185 | public float r() { 186 | return T[R]; 187 | } 188 | 189 | public float x(float x) { 190 | return x * T[SX] + T[TX]; 191 | } 192 | 193 | public float y(float y) { 194 | return y * T[SY] + T[TY]; 195 | } 196 | 197 | public float w(float w) { 198 | return T[SX] * w; 199 | } 200 | 201 | public float h(float h) { 202 | return T[SY] * h; 203 | } 204 | 205 | private StringBuilder sb = new StringBuilder(); 206 | 207 | public void drawChar(char c, float x, float y) { 208 | sb.delete(0, sb.length()); 209 | sb.append(c); 210 | drawText(sb.toString(), x, y); 211 | } 212 | 213 | public void drawText(String txt, float x, float y) { 214 | Canvas canvas = getCanvas(); 215 | if (canvas == null) return; 216 | float s = paint.getTextSize(); 217 | float sx = paint.getTextScaleX(); 218 | paint.setTextSize(s * sy()); 219 | paint.setTextScaleX(sx() / sy()); 220 | canvas.drawText(txt, x(x), y(y), paint); 221 | paint.setTextSize(s); 222 | paint.setTextScaleX(sx); 223 | } 224 | 225 | public void drawLine(float x1, float y1, float x2, float y2) { 226 | Canvas canvas = getCanvas(); 227 | if (canvas == null) return; 228 | float th = paint.getStrokeWidth(); 229 | float sw = h(th); 230 | if (sw < 1.f) sw = 1.f; 231 | paint.setStrokeWidth(sw); 232 | float xx1 = x(x1); 233 | float yy1 = y(y1); 234 | float xx2 = x(x2); 235 | float yy2 = y(y2); 236 | canvas.drawLine(xx1, yy1, xx2, yy2, paint); 237 | paint.setStrokeWidth(th); 238 | } 239 | 240 | private void renderRect(float x, float y, float w, float h, Paint.Style s) { 241 | Canvas canvas = getCanvas(); 242 | if (canvas == null) return; 243 | Paint.Style style = paint.getStyle(); 244 | // draw 245 | paint.setStyle(s); 246 | float th = paint.getStrokeWidth(); 247 | paint.setStrokeWidth(h(th)); 248 | float xx = x(x); 249 | float yy = y(y); 250 | float ww = w(w); 251 | float hh = h(h); 252 | canvas.drawRect(xx, yy, xx + ww, yy + hh, paint); 253 | // reset 254 | paint.setStyle(style); 255 | paint.setStrokeWidth(th); 256 | } 257 | 258 | public void drawRect(float x, float y, float w, float h) { 259 | renderRect(x, y, w, h, Paint.Style.STROKE); 260 | } 261 | 262 | public void fillRect(float x, float y, float w, float h) { 263 | renderRect(x, y, w, h, Paint.Style.FILL); 264 | } 265 | 266 | private RectF tr = new RectF(); 267 | 268 | private void renderRoundRect(float x, float y, float w, float h, float rx, float ry, Paint.Style s) { 269 | Canvas canvas = getCanvas(); 270 | if (canvas == null) return; 271 | Paint.Style style = paint.getStyle(); 272 | paint.setStyle(s); 273 | float th = paint.getStrokeWidth(); 274 | paint.setStrokeWidth(h(th)); 275 | tr.left = x(x); 276 | tr.top = y(y); 277 | tr.right = tr.left + w(w); 278 | tr.bottom = tr.top + h(h); 279 | float rxx = w(rx); 280 | float ryy = h(ry); 281 | canvas.drawRoundRect(tr, rxx, ryy, paint); 282 | // reset 283 | paint.setStyle(style); 284 | paint.setStrokeWidth(th); 285 | } 286 | 287 | public void drawRoundRect(float x, float y, float w, float h, float rx, float ry) { 288 | renderRoundRect(x, y, w, h, rx, ry, Paint.Style.STROKE); 289 | } 290 | 291 | public void fillRoundRect(float x, float y, float w, float h, float rx, float ry) { 292 | renderRoundRect(x, y, w, h, rx, ry, Paint.Style.FILL); 293 | } 294 | } 295 | -------------------------------------------------------------------------------- /libtex/src/main/java/io/nano/tex/LaTeX.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex; 2 | 3 | import android.content.Context; 4 | 5 | import io.nano.tex.res.ResManager; 6 | 7 | /** 8 | * Created by nano on 18-11-10 9 | */ 10 | public final class LaTeX { 11 | 12 | private static boolean libLoaded = false; 13 | private static LaTeX instance; 14 | 15 | /** 16 | * Get the instance of the LaTeX engine. 17 | */ 18 | public synchronized static LaTeX instance() { 19 | if (!libLoaded) { 20 | System.loadLibrary("tex"); 21 | libLoaded = true; 22 | } 23 | if (instance == null) instance = new LaTeX(); 24 | return instance; 25 | } 26 | 27 | private volatile boolean initialized = false; 28 | private volatile boolean isDebug = false; 29 | 30 | private LaTeX() { 31 | } 32 | 33 | /** 34 | * Initialize the LaTeX engine. Call of this function will copy the "TeX resources" from apk into the 35 | * data files directory of the host application, and parse the "TeX resources", it may takes long time, 36 | * you may call it from a background thread. 37 | */ 38 | public synchronized void init(Context context) { 39 | ResManager rm = new ResManager(context); 40 | rm.unpackResources(); 41 | boolean success = nInit(rm.getResourcesRootDirectory()); 42 | if (!success) { 43 | throw new TeXException("Failed to initialize LaTeX engine."); 44 | } 45 | initialized = true; 46 | } 47 | 48 | /** 49 | * Check if the LaTeX engine is initialized. 50 | */ 51 | public boolean isInitialized() { 52 | return initialized; 53 | } 54 | 55 | /** 56 | * Release the LaTeX engine. 57 | */ 58 | public synchronized void release() { 59 | nFree(); 60 | initialized = false; 61 | } 62 | 63 | private void check() { 64 | if (!initialized) throw new IllegalStateException( 65 | "The engine was not initialized, call init(Context) before use."); 66 | } 67 | 68 | /** 69 | * Parse a TeX formatted code with specified text size and foreground color. 70 | */ 71 | public synchronized TeXRender parse(String ltx, float textSize, int foreground) { 72 | check(); 73 | long ptr = nParse(ltx, 0, textSize, 0, foreground); 74 | if (ptr == 0) throw new TeXException("Failed to parse LaTeX: " + ltx); 75 | return new TeXRender(ptr); 76 | } 77 | 78 | /** 79 | * Parse a TeX code 80 | * 81 | * @param ltx the TeX formatted code 82 | * @param width the width of the 2D graphics context 83 | * @param textSize the text size to draw 84 | * @param lineSpace the space between two lines 85 | * @param foreground the foreground color 86 | */ 87 | public synchronized TeXRender parse( 88 | String ltx, int width, 89 | float textSize, float lineSpace, 90 | int foreground) { 91 | check(); 92 | long ptr = nParse(ltx, width, textSize, lineSpace, foreground); 93 | if (ptr == 0) throw new TeXException("Failed to parse LaTeX: " + ltx); 94 | // We got a very long formula, scale to fit the width 95 | TeXRender r = new TeXRender(ptr); 96 | if (r.getWidth() > width) { 97 | float w = r.getWidth(); 98 | float scale = width / w; 99 | r.setTextSize(scale * textSize); 100 | } 101 | return r; 102 | } 103 | 104 | /** 105 | * Set if debug 106 | */ 107 | public synchronized void setDebug(boolean debug) { 108 | nSetDebug(debug); 109 | isDebug = debug; 110 | } 111 | 112 | /** 113 | * Check if is in debug mode. 114 | */ 115 | public boolean isDebug() { 116 | return isDebug; 117 | } 118 | 119 | private static native boolean nInit(String resDir); 120 | 121 | private static native void nFree(); 122 | 123 | private static native long nParse( 124 | String ltx, int width, 125 | float textSize, float lineSpace, 126 | int foreground); 127 | 128 | private static native void nSetDebug(boolean debug); 129 | } 130 | -------------------------------------------------------------------------------- /libtex/src/main/java/io/nano/tex/Rect.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex; 2 | 3 | /** 4 | * Created by nano on 18-11-10 5 | */ 6 | final class Rect { 7 | 8 | float x, y, w, h; 9 | 10 | Rect(float x, float y, float w, float h) { 11 | this.x = x; 12 | this.y = y; 13 | this.w = w; 14 | this.h = h; 15 | } 16 | } 17 | -------------------------------------------------------------------------------- /libtex/src/main/java/io/nano/tex/TeXException.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex; 2 | 3 | /** 4 | * Created by nano on 18-11-10 5 | */ 6 | public class TeXException extends RuntimeException { 7 | 8 | public TeXException(String msg) { 9 | super(msg); 10 | } 11 | } 12 | -------------------------------------------------------------------------------- /libtex/src/main/java/io/nano/tex/TeXRender.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex; 2 | 3 | /** 4 | * Created by nano on 18-11-10 5 | */ 6 | public final class TeXRender { 7 | 8 | /** 9 | * Delegate class to release native resources while finalize. 10 | */ 11 | private static class Finalizer { 12 | 13 | private long nativePtr; 14 | 15 | Finalizer(long nativePtr) { 16 | this.nativePtr = nativePtr; 17 | } 18 | 19 | @Override 20 | protected void finalize() throws Throwable { 21 | if (nativePtr != 0) { 22 | nFinalize(nativePtr); 23 | nativePtr = 0; 24 | } 25 | super.finalize(); 26 | } 27 | } 28 | 29 | private long nativePtr; 30 | private ActionRecorder recorder; 31 | private Finalizer finalizer; 32 | 33 | TeXRender(long nativePtr) { 34 | this.nativePtr = nativePtr; 35 | finalizer = new Finalizer(nativePtr); 36 | } 37 | 38 | /** 39 | * Get the text size 40 | */ 41 | public float getTextSize() { 42 | return nGetTextSize(nativePtr); 43 | } 44 | 45 | /** 46 | * Get the height 47 | */ 48 | public int getHeight() { 49 | return nGetHeight(nativePtr); 50 | } 51 | 52 | /** 53 | * Get the depth (descent in positive) 54 | */ 55 | public int getDepth() { 56 | return nGetDepth(nativePtr); 57 | } 58 | 59 | public int getWidth() { 60 | return nGetWidth(nativePtr); 61 | } 62 | 63 | public float getBaseline() { 64 | return nGetBaseline(nativePtr); 65 | } 66 | 67 | /** 68 | * Set the text size 69 | */ 70 | public void setTextSize(float size) { 71 | nSetTextSize(nativePtr, size); 72 | } 73 | 74 | /** 75 | * Set the foreground color 76 | */ 77 | public void setForeground(int color) { 78 | // Cancel previous records 79 | recorder = null; 80 | nSetForeground(nativePtr, color); 81 | } 82 | 83 | /** 84 | * Set the width 85 | * 86 | * @param width the width, in pixel 87 | * @param align the alignment, must be one of the value defined in {@link Alignment} 88 | */ 89 | public void setWidth(int width, int align) { 90 | nSetWidth(nativePtr, width, align); 91 | } 92 | 93 | /** 94 | * Set the height 95 | * 96 | * @param height the height, in pixel 97 | * @param align the alignment, must be one of the value defined in {@link Alignment} 98 | */ 99 | public void setHeight(int height, int align) { 100 | nSetHeight(nativePtr, height, align); 101 | } 102 | 103 | /** 104 | * Draw the formula 105 | * 106 | * @param g2 the 2D graphics context 107 | * @param x the left position to draw 108 | * @param y the top position to draw 109 | */ 110 | public void draw(Graphics2D g2, int x, int y) { 111 | if (recorder == null) { 112 | recorder = new ActionRecorder(); 113 | nDraw(nativePtr, recorder, 0, 0); 114 | } 115 | recorder.setPosition(x, y); 116 | recorder.play(g2); 117 | } 118 | 119 | /** 120 | * Invalidate the drawing cache, refill the cache when next call of 121 | * {@link TeXRender#draw(Graphics2D, int, int)} 122 | */ 123 | public void invalidateDrawingCache() { 124 | recorder = null; 125 | } 126 | 127 | private static native void nDraw(long ptr, ActionRecorder recorder, int x, int y); 128 | 129 | private static native float nGetTextSize(long ptr); 130 | 131 | private static native int nGetHeight(long ptr); 132 | 133 | private static native int nGetDepth(long ptr); 134 | 135 | private static native int nGetWidth(long ptr); 136 | 137 | private static native float nGetBaseline(long ptr); 138 | 139 | private static native void nSetTextSize(long ptr, float size); 140 | 141 | private static native void nSetForeground(long ptr, int color); 142 | 143 | private static native void nSetWidth(long ptr, int width, int align); 144 | 145 | private static native void nSetHeight(long ptr, int height, int align); 146 | 147 | private static native void nFinalize(long ptr); 148 | } 149 | -------------------------------------------------------------------------------- /libtex/src/main/java/io/nano/tex/TextLayout.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex; 2 | 3 | import android.graphics.Typeface; 4 | import android.text.TextPaint; 5 | 6 | /** 7 | * Created by nano on 18-11-10 8 | */ 9 | public final class TextLayout { 10 | 11 | private static final TextPaint TMP_PAINT = new TextPaint(); 12 | /** 13 | * Keep in sync with the size of TextRenderingBox::_font 14 | */ 15 | private static final float FACTORED_TEXT_SIZE = 10.f; 16 | 17 | static { 18 | TMP_PAINT.setTextSize(FACTORED_TEXT_SIZE); 19 | } 20 | 21 | public static Rect getBounds(String txt, Font font) { 22 | Typeface oldTypeface = TMP_PAINT.getTypeface(); 23 | TMP_PAINT.setTypeface(font.getTypeface()); 24 | android.graphics.Rect ar = new android.graphics.Rect(); 25 | TMP_PAINT.getTextBounds(txt, 0, txt.length(), ar); 26 | Rect r = new Rect(ar.left, ar.top, ar.width(), ar.height()); 27 | // Reset typeface to avoid memory leak 28 | TMP_PAINT.setTypeface(oldTypeface); 29 | return r; 30 | } 31 | } 32 | -------------------------------------------------------------------------------- /libtex/src/main/java/io/nano/tex/res/ResManager.java: -------------------------------------------------------------------------------- 1 | package io.nano.tex.res; 2 | 3 | import android.content.Context; 4 | import android.util.Log; 5 | 6 | import java.io.BufferedOutputStream; 7 | import java.io.BufferedReader; 8 | import java.io.File; 9 | import java.io.FileOutputStream; 10 | import java.io.IOException; 11 | import java.io.InputStream; 12 | import java.io.InputStreamReader; 13 | import java.io.OutputStream; 14 | import java.util.ArrayList; 15 | import java.util.List; 16 | 17 | /** 18 | * Created by nano on 18-11-10 19 | */ 20 | public final class ResManager { 21 | 22 | private static final String TAG = "ResManager"; 23 | 24 | private String rootDir; 25 | 26 | public ResManager(Context context) { 27 | rootDir = context.getFilesDir().getPath() + File.separator + "tex"; 28 | } 29 | 30 | public String getResourcesRootDirectory() { 31 | return rootDir; 32 | } 33 | 34 | private List listRes() { 35 | InputStream is = ResManager.class.getResourceAsStream("RES_README"); 36 | BufferedReader in = new BufferedReader(new InputStreamReader(is)); 37 | String line; 38 | List res = new ArrayList<>(); 39 | try { 40 | while ((line = in.readLine()) != null) res.add(line); 41 | } catch (IOException e) { 42 | Log.e(TAG, "Failed to read resources", e); 43 | } finally { 44 | try { 45 | in.close(); 46 | } catch (IOException e) { 47 | Log.e(TAG, "Failed to close resources file.", e); 48 | } 49 | } 50 | return res; 51 | } 52 | 53 | public void unpackResources() { 54 | List res = listRes(); 55 | File root = new File(rootDir); 56 | if (!root.exists()) root.mkdirs(); 57 | 58 | for (String path : res) { 59 | File file = new File(rootDir + File.separator + path); 60 | if (file.exists()) continue; 61 | int li = path.lastIndexOf(File.separator); 62 | if (li >= 0) { 63 | String dir = path.substring(0, li); 64 | File f = new File(rootDir + File.separator + dir); 65 | if (!f.exists()) f.mkdirs(); 66 | } 67 | String p = rootDir + File.separator + path; 68 | InputStream is = ResManager.class.getResourceAsStream(path); 69 | Log.i(TAG, "Copy resource: " + path); 70 | copyTo(is, p); 71 | } 72 | } 73 | 74 | private static void copyTo(InputStream is, String targetPath) { 75 | OutputStream os = null; 76 | try { 77 | byte[] buffer = new byte[2048]; 78 | os = new BufferedOutputStream(new FileOutputStream(targetPath)); 79 | int l; 80 | while ((l = is.read(buffer)) > 0) os.write(buffer, 0, l); 81 | os.flush(); 82 | } catch (Exception e) { 83 | Log.e(TAG, "Copy resource failed", e); 84 | } finally { 85 | try { 86 | is.close(); 87 | if (os != null) os.close(); 88 | } catch (IOException e) { 89 | Log.e(TAG, "Copy resource failed", e); 90 | } 91 | } 92 | } 93 | } 94 | -------------------------------------------------------------------------------- /libtex/src/main/jni/Android.mk: -------------------------------------------------------------------------------- 1 | LOCAL_PATH := $(call my-dir) 2 | 3 | include $(CLEAR_VARS) 4 | 5 | LOCAL_LDLIBS := -lm -llog 6 | 7 | LOCAL_CFLAGS := \ 8 | -D__GXX_EXPERIMENTAL_CXX0X__ \ 9 | -fvisibility=hidden \ 10 | -ffunction-sections \ 11 | -fdata-sections \ 12 | -Os 13 | 14 | LOCAL_CPPFLAGS := \ 15 | -std=gnu++0x \ 16 | -fvisibility=hidden \ 17 | -ffunction-sections \ 18 | -fdata-sections \ 19 | -Os 20 | 21 | LOCAL_LDFLAGS := -Wl,--gc-sections 22 | 23 | LOCAL_C_INCLUDES := $(LOCAL_PATH)/tex/src $(LOCAL_PATH)/port 24 | 25 | # Traverse all the directory and subdirectory 26 | define walk 27 | $(wildcard $(1)) $(foreach e, $(wildcard $(1)/*), $(call walk, $(e))) 28 | endef 29 | 30 | # Find all the file recursively under directory jni/ 31 | ALLFILES = $(call walk, $(LOCAL_PATH)) 32 | SRC_FILE_LIST = $(filter %.cpp, $(ALLFILES)) 33 | 34 | $(info [$(TARGET_ARCH_ABI)] source files are:) 35 | $(foreach f, $(SRC_FILE_LIST), $(info $(f))) 36 | 37 | LOCAL_MODULE := tex 38 | LOCAL_SRC_FILES := $(SRC_FILE_LIST:$(LOCAL_PATH)/%=%) 39 | 40 | include $(BUILD_SHARED_LIBRARY) 41 | -------------------------------------------------------------------------------- /libtex/src/main/jni/Application.mk: -------------------------------------------------------------------------------- 1 | APP_STL := c++_static 2 | APP_CPPFLAGS += -fexceptions -frtti 3 | APP_OPTIM := release 4 | APP_ABI := armeabi-v7a arm64-v8a 5 | -------------------------------------------------------------------------------- /libtex/src/main/jni/port/graphics_android.cpp: -------------------------------------------------------------------------------- 1 | #include "config.h" 2 | 3 | #ifdef __OS_Android__ 4 | 5 | #include "jni_def.h" 6 | #include "jni_log.h" 7 | 8 | #include "common.h" 9 | #include "graphics_android.h" 10 | 11 | #include 12 | 13 | using namespace tex; 14 | using namespace std; 15 | 16 | /******************************************* Android Font *****************************************/ 17 | 18 | static void _delete_java_ref(jobject ptr) { 19 | JNIEnv* env = getJNIEnv(); 20 | env->DeleteGlobalRef(ptr); 21 | LOGI("Delete global java ref: %p", ptr); 22 | } 23 | 24 | void Font_Android::setSize(float size) { 25 | _size = size; 26 | } 27 | 28 | void Font_Android::setJavaFont(jobject font) { 29 | jobject ref = getJNIEnv()->NewGlobalRef(font); 30 | _javaFont = shared_ptr<_jobject>(ref, _delete_java_ref); 31 | } 32 | 33 | shared_ptr<_jobject> Font_Android::getJavaFont() const { 34 | return _javaFont; 35 | } 36 | 37 | float Font_Android::getSize() const { 38 | return _size; 39 | } 40 | 41 | shared_ptr Font_Android::deriveFont(int style) const { 42 | Font_Android* f = new Font_Android(); 43 | JNIEnv* env = getJNIEnv(); 44 | jobject obj = env->CallObjectMethod(_javaFont.get(), gMethodDeriveFont, style); 45 | f->_size = _size; 46 | if (env->IsSameObject(_javaFont.get(), obj)) { 47 | f->_javaFont = _javaFont; 48 | } else { 49 | f->setJavaFont(obj); 50 | } 51 | LOGI("Derive font, java font: %p, style: %d, derived java font: %p", 52 | _javaFont.get(), style, f->_javaFont.get()); 53 | return shared_ptr(f); 54 | } 55 | 56 | bool Font_Android::operator==(const Font& f) const { 57 | return _javaFont.get() == static_cast(f)._javaFont.get(); 58 | } 59 | 60 | bool Font_Android::operator!=(const Font& f) const { 61 | return !(*this == f); 62 | } 63 | 64 | Font* Font::create(const string& file, float size) { 65 | Font_Android* f = new Font_Android(); 66 | JNIEnv* env = getJNIEnv(); 67 | jstring str = env->NewStringUTF(file.c_str()); 68 | jobject obj = env->CallStaticObjectMethod( 69 | gClassFont, gMethodCreateFontFromFile, str, size); 70 | f->setSize(size); 71 | f->setJavaFont(obj); 72 | env->DeleteLocalRef(str); 73 | return f; 74 | } 75 | 76 | shared_ptr Font::_create(const string& name, int style, float size) { 77 | Font_Android* f = new Font_Android(); 78 | JNIEnv* env = getJNIEnv(); 79 | jstring str = env->NewStringUTF(name.c_str()); 80 | jobject obj = env->CallStaticObjectMethod( 81 | gClassFont, gMethodCreateFontFromName, str, style, size); 82 | f->setSize(size); 83 | f->setJavaFont(obj); 84 | env->DeleteLocalRef(str); 85 | return shared_ptr(f); 86 | } 87 | 88 | /******************************************* Text layout ******************************************/ 89 | 90 | void TextLayout_Android::getBounds(_out_ Rect& bounds) { 91 | JNIEnv* env = getJNIEnv(); 92 | shared_ptr<_jobject> jfont = static_cast(_font.get())->getJavaFont(); 93 | jstring str = env->NewStringUTF(wide2utf8(_txt.c_str()).c_str()); 94 | jobject obj = env->CallStaticObjectMethod( 95 | gClassTextLayout, gMethodGetBounds, str, jfont.get()); 96 | bounds.x = env->GetFloatField(obj, gFieldRectX); 97 | bounds.y = env->GetFloatField(obj, gFieldRectY); 98 | bounds.w = env->GetFloatField(obj, gFieldRectW); 99 | bounds.h = env->GetFloatField(obj, gFieldRectH); 100 | 101 | env->DeleteLocalRef(str); 102 | env->DeleteLocalRef(obj); 103 | 104 | LOGI("TextLayout::getBounds: [%.2f, %.2f, %.2f, %.2f]", bounds.x, bounds.y, bounds.w, bounds.h); 105 | } 106 | 107 | void TextLayout_Android::draw(Graphics2D& g2, float x, float y) { 108 | const Font* oldFont = g2.getFont(); 109 | g2.setFont(_font.get()); 110 | string str = wide2utf8(_txt.c_str()); 111 | LOGI("TextLayout::draw, text: %s", str.c_str()); 112 | g2.drawText(_txt, x, y); 113 | g2.setFont(oldFont); 114 | } 115 | 116 | shared_ptr TextLayout::create(const wstring& txt, const shared_ptr& font) { 117 | return shared_ptr(new TextLayout_Android(txt, font)); 118 | } 119 | 120 | /******************************************* Graphics 2D ******************************************/ 121 | 122 | /** 123 | * Keep in sync with io/nano/tex/ActionRecorder 124 | */ 125 | enum Action { 126 | ACT_setFont, 127 | ACT_setColor, 128 | ACT_setStrokeWidth, 129 | ACT_setStroke, 130 | ACT_translate, 131 | ACT_scale, 132 | ACT_rotate, 133 | ACT_reset, 134 | ACT_drawChar, 135 | ACT_drawText, 136 | ACT_drawLine, 137 | ACT_drawRect, 138 | ACT_fillRect, 139 | ACT_drawRoundRect, 140 | ACT_fillRoundRect 141 | }; 142 | 143 | enum AffineTransformIndex { 144 | SX, 145 | SY, 146 | TX, 147 | TY, 148 | R, 149 | PX, 150 | PY 151 | }; 152 | 153 | Graphics2D_Android::Graphics2D_Android(jobject jrecorder) : _font(nullptr), _stroke() { 154 | _t = new float[9](); 155 | _t[SX] = _t[SY] = 1; 156 | _color = black; 157 | JNIEnv* env = getJNIEnv(); 158 | _jrecorder = env->NewGlobalRef(jrecorder); 159 | } 160 | 161 | Graphics2D_Android::~Graphics2D_Android() { 162 | delete _t; 163 | JNIEnv* env = getJNIEnv(); 164 | env->DeleteGlobalRef(_jrecorder); 165 | } 166 | 167 | void Graphics2D_Android::makeRecord(int action, jobject arg, const jfloat* args, int argsLen) { 168 | jfloatArray arr = 0; 169 | JNIEnv* env = getJNIEnv(); 170 | if (argsLen != 0) { 171 | arr = env->NewFloatArray(argsLen); 172 | env->SetFloatArrayRegion(arr, 0, argsLen, args); 173 | } 174 | env->CallVoidMethod(_jrecorder, gMethodRecord, action, arg, arr); 175 | if (arr) env->DeleteLocalRef(arr); 176 | } 177 | 178 | void Graphics2D_Android::setColor(color c) { 179 | _color = c; 180 | jfloat p[] = {static_cast((int)c)}; 181 | makeRecord(ACT_setColor, NULL, p, 1); 182 | } 183 | 184 | color Graphics2D_Android::getColor() const { 185 | return _color; 186 | } 187 | 188 | void Graphics2D_Android::setStroke(const Stroke& s) { 189 | _stroke = s; 190 | jfloat p[] = { 191 | s.lineWidth, 192 | s.miterLimit, 193 | static_cast(s.cap), 194 | static_cast(s.join)}; 195 | makeRecord(ACT_setStroke, NULL, p, 4); 196 | } 197 | 198 | const Stroke& Graphics2D_Android::getStroke() const { 199 | return _stroke; 200 | } 201 | 202 | void Graphics2D_Android::setStrokeWidth(float w) { 203 | _stroke.lineWidth = w; 204 | jfloat p[] = {w}; 205 | makeRecord(ACT_setStrokeWidth, NULL, p, 1); 206 | } 207 | 208 | const Font* Graphics2D_Android::getFont() const { 209 | return _font; 210 | } 211 | 212 | void Graphics2D_Android::setFont(const Font* font) { 213 | _font = font; 214 | if (font == nullptr) { 215 | makeRecord(ACT_setFont, NULL, NULL, 0); 216 | return; 217 | } 218 | const Font_Android* f = static_cast(font); 219 | makeRecord(ACT_setFont, f->getJavaFont().get(), NULL, 0); 220 | } 221 | 222 | void Graphics2D_Android::translate(float dx, float dy) { 223 | _t[TX] += _t[SX] * dx; 224 | _t[TY] += _t[SY] * dy; 225 | jfloat p[] = {dx, dy}; 226 | makeRecord(ACT_translate, NULL, p, 2); 227 | } 228 | 229 | void Graphics2D_Android::scale(float sx, float sy) { 230 | _t[SX] *= sx; 231 | _t[SY] *= sy; 232 | jfloat p[] = {sx, sy}; 233 | makeRecord(ACT_scale, NULL, p, 2); 234 | } 235 | 236 | void Graphics2D_Android::rotate(float angle) { 237 | rotate(angle, 0, 0); 238 | } 239 | 240 | void Graphics2D_Android::rotate(float angle, float px, float py) { 241 | float r = (float)(angle / PI * 180); 242 | _t[R] += r; 243 | _t[PX] = px * _t[SX] + _t[TX]; 244 | _t[PY] = py * _t[SY] + _t[TY]; 245 | jfloat p[] = {angle, px, py}; 246 | makeRecord(ACT_rotate, NULL, p, 3); 247 | } 248 | 249 | void Graphics2D_Android::reset() { 250 | memset(_t, 0, sizeof(float) * 9); 251 | _t[SX] = _t[SY] = 1; 252 | makeRecord(ACT_reset, NULL, NULL, 0); 253 | } 254 | 255 | float Graphics2D_Android::sx() const { 256 | return _t[SX]; 257 | } 258 | 259 | float Graphics2D_Android::sy() const { 260 | return _t[SY]; 261 | } 262 | 263 | void Graphics2D_Android::drawChar(wchar_t c, float x, float y) { 264 | jfloat p[] = {static_cast(c), x, y}; 265 | makeRecord(ACT_drawChar, NULL, p, 3); 266 | } 267 | 268 | void Graphics2D_Android::drawText(const wstring& c, float x, float y) { 269 | string str = wide2utf8(c.c_str()); 270 | JNIEnv* env = getJNIEnv(); 271 | jstring jstr = env->NewStringUTF(str.c_str()); 272 | jfloat p[] = {x, y}; 273 | makeRecord(ACT_drawText, jstr, p, 2); 274 | env->DeleteLocalRef(jstr); 275 | } 276 | 277 | void Graphics2D_Android::drawLine(float x1, float y1, float x2, float y2) { 278 | jfloat p[] = {x1, y1, x2, y2}; 279 | makeRecord(ACT_drawLine, NULL, p, 4); 280 | } 281 | 282 | void Graphics2D_Android::drawRect(float x, float y, float w, float h) { 283 | jfloat p[] = {x, y, w, h}; 284 | makeRecord(ACT_drawRect, NULL, p, 4); 285 | } 286 | 287 | void Graphics2D_Android::fillRect(float x, float y, float w, float h) { 288 | jfloat p[] = {x, y, w, h}; 289 | makeRecord(ACT_fillRect, NULL, p, 4); 290 | } 291 | 292 | void Graphics2D_Android::drawRoundRect(float x, float y, float w, float h, float rx, float ry) { 293 | jfloat p[] = {x, y, w, h, rx, ry}; 294 | makeRecord(ACT_drawRoundRect, NULL, p, 6); 295 | } 296 | 297 | void Graphics2D_Android::fillRoundRect(float x, float y, float w, float h, float rx, float ry) { 298 | jfloat p[] = {x, y, w, h, rx, ry}; 299 | makeRecord(ACT_fillRoundRect, NULL, p, 6); 300 | } 301 | 302 | #endif // __OS_Android__ 303 | -------------------------------------------------------------------------------- /libtex/src/main/jni/port/graphics_android.h: -------------------------------------------------------------------------------- 1 | #include "config.h" 2 | 3 | #ifdef __OS_Android__ 4 | 5 | #ifndef GRAPHICS_ANDROID_INCLUDED 6 | #define GRAPHICS_ANDROID_INCLUDED 7 | 8 | #include 9 | #include "graphic/graphic.h" 10 | 11 | using namespace tex; 12 | 13 | class Font_Android : public Font { 14 | private: 15 | float _size; 16 | shared_ptr<_jobject> _javaFont; 17 | 18 | Font_Android(const Font_Android&); 19 | void operator=(const Font_Android&); 20 | 21 | public: 22 | Font_Android() : _size(1), _javaFont(nullptr) {} 23 | 24 | void setSize(float size); 25 | void setJavaFont(jobject font); 26 | shared_ptr<_jobject> getJavaFont() const; 27 | 28 | virtual float getSize() const override; 29 | virtual shared_ptr deriveFont(int style) const override; 30 | virtual bool operator==(const Font& f) const override; 31 | virtual bool operator!=(const Font& f) const override; 32 | }; 33 | 34 | class TextLayout_Android : public TextLayout { 35 | private: 36 | shared_ptr _font; 37 | const wstring _txt; 38 | 39 | TextLayout_Android(const TextLayout_Android&); 40 | void operator=(const TextLayout_Android&); 41 | 42 | public: 43 | TextLayout_Android(const wstring& txt, const shared_ptr font) 44 | : _txt(txt), _font(font) {} 45 | 46 | virtual void getBounds(_out_ Rect& bounds) override; 47 | virtual void draw(Graphics2D& g2, float x, float y) override; 48 | }; 49 | 50 | class Graphics2D_Android : public Graphics2D { 51 | private: 52 | jobject _jrecorder; 53 | float* _t; 54 | color _color; 55 | const Font* _font; 56 | Stroke _stroke; 57 | 58 | void makeRecord(int action, jobject arg, const jfloat* args, int argsLen); 59 | 60 | Graphics2D_Android(const Graphics2D_Android&); 61 | void operator=(const Graphics2D_Android&); 62 | 63 | public: 64 | Graphics2D_Android(jobject jrecorder); 65 | 66 | ~Graphics2D_Android(); 67 | 68 | virtual void setColor(color c) override; 69 | virtual color getColor() const override; 70 | virtual void setStroke(const Stroke& s) override; 71 | virtual const Stroke& getStroke() const override; 72 | virtual void setStrokeWidth(float w) override; 73 | virtual const Font* getFont() const override; 74 | virtual void setFont(const Font* font) override; 75 | virtual void translate(float dx, float dy) override; 76 | virtual void scale(float sx, float sy) override; 77 | virtual void rotate(float angle) override; 78 | virtual void rotate(float angle, float px, float py) override; 79 | virtual void reset() override; 80 | virtual float sx() const override; 81 | virtual float sy() const override; 82 | virtual void drawChar(wchar_t c, float x, float y) override; 83 | virtual void drawText(const wstring& c, float x, float y) override; 84 | virtual void drawLine(float x1, float y1, float x2, float y2) override; 85 | virtual void drawRect(float x, float y, float w, float h) override; 86 | virtual void fillRect(float x, float y, float w, float h) override; 87 | virtual void drawRoundRect(float x, float y, float w, float h, float rx, float ry) override; 88 | virtual void fillRoundRect(float x, float y, float w, float h, float rx, float ry) override; 89 | }; 90 | 91 | #endif // GRAPHICS_ANDROID_INCLUDED 92 | #endif // __OS_Android__ 93 | -------------------------------------------------------------------------------- /libtex/src/main/jni/port/jni_def.cpp: -------------------------------------------------------------------------------- 1 | #include "jni_def.h" 2 | #include "jni_log.h" 3 | 4 | JavaVM* gJVM; 5 | 6 | /** io/nano/tex/Rect */ 7 | jfieldID gFieldRectX, gFieldRectY, gFieldRectW, gFieldRectH; 8 | 9 | /** io/nano/tex/TextLayout */ 10 | jclass gClassTextLayout; 11 | jmethodID gMethodGetBounds; 12 | 13 | /** io/nano/tex/Font */ 14 | jclass gClassFont; 15 | jmethodID gMethodDeriveFont; 16 | jmethodID gMethodCreateFontFromName; 17 | jmethodID gMethodCreateFontFromFile; 18 | 19 | /** io/nano/tex/ActionRecorder */ 20 | jmethodID gMethodRecord; 21 | 22 | JNIEnv* getJNIEnv() { 23 | JNIEnv* env = 0; 24 | gJVM->GetEnv(reinterpret_cast(&env), JNI_VERSION_1_6); 25 | return env; 26 | } 27 | 28 | static void load(JNIEnv* env) { 29 | // io/nano/tex/Rect 30 | jclass rect = env->FindClass("io/nano/tex/Rect"); 31 | gFieldRectX = env->GetFieldID(rect, "x", "F"); 32 | gFieldRectY = env->GetFieldID(rect, "y", "F"); 33 | gFieldRectW = env->GetFieldID(rect, "w", "F"); 34 | gFieldRectH = env->GetFieldID(rect, "h", "F"); 35 | // io/nano/tex/TextLayout 36 | jclass layout = env->FindClass("io/nano/tex/TextLayout"); 37 | gMethodGetBounds = env->GetStaticMethodID( 38 | layout, 39 | "getBounds", 40 | "(Ljava/lang/String;Lio/nano/tex/Font;)Lio/nano/tex/Rect;"); 41 | gClassTextLayout = (jclass)env->NewGlobalRef(layout); 42 | // io/nano/tex/Font 43 | jclass font = env->FindClass("io/nano/tex/Font"); 44 | gClassFont = (jclass)env->NewGlobalRef(font); 45 | gMethodDeriveFont = env->GetMethodID( 46 | gClassFont, 47 | "deriveFont", 48 | "(I)Lio/nano/tex/Font;"); 49 | gMethodCreateFontFromName = env->GetStaticMethodID( 50 | gClassFont, 51 | "create", 52 | "(Ljava/lang/String;IF)Lio/nano/tex/Font;"); 53 | gMethodCreateFontFromFile = env->GetStaticMethodID( 54 | gClassFont, 55 | "create", 56 | "(Ljava/lang/String;F)Lio/nano/tex/Font;"); 57 | // io/nano/tex/ActionRecorder 58 | jclass recorder = env->FindClass("io/nano/tex/ActionRecorder"); 59 | gMethodRecord = env->GetMethodID( 60 | recorder, 61 | "record", 62 | "(ILjava/lang/Object;[F)V"); 63 | } 64 | 65 | extern int registerLaTeX(JNIEnv* env); 66 | extern int registerTeXRender(JNIEnv* env); 67 | 68 | extern "C" JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void* reserved) { 69 | gJVM = vm; 70 | 71 | LOGI("Load jni, initialize java methods..."); 72 | 73 | JNIEnv* env = 0; 74 | vm->GetEnv(reinterpret_cast(&env), JNI_VERSION_1_6); 75 | 76 | registerLaTeX(env); 77 | registerTeXRender(env); 78 | 79 | load(env); 80 | 81 | return JNI_VERSION_1_6; 82 | } 83 | -------------------------------------------------------------------------------- /libtex/src/main/jni/port/jni_def.h: -------------------------------------------------------------------------------- 1 | #ifndef JNI_DEF_INCLUDED 2 | #define JNI_DEF_INCLUDED 3 | 4 | #include 5 | 6 | #ifdef __cplusplus 7 | extern "C" { 8 | #endif 9 | 10 | /** io/nano/tex/Rect */ 11 | extern jfieldID gFieldRectX, gFieldRectY, gFieldRectW, gFieldRectH; 12 | 13 | /** io/nano/tex/TextLayout */ 14 | extern jclass gClassTextLayout; 15 | extern jmethodID gMethodGetBounds; 16 | 17 | /** io/nano/tex/Font */ 18 | extern jclass gClassFont; 19 | extern jmethodID gMethodDeriveFont; 20 | extern jmethodID gMethodCreateFontFromName; 21 | extern jmethodID gMethodCreateFontFromFile; 22 | 23 | /** io/nano/tex/ActionRecorder */ 24 | extern jmethodID gMethodRecord; 25 | 26 | #ifdef __cplusplus 27 | } 28 | #endif 29 | 30 | /** Get the jni environment */ 31 | JNIEnv* getJNIEnv(); 32 | 33 | #endif // JNI_DEF_INCLUDED 34 | -------------------------------------------------------------------------------- /libtex/src/main/jni/port/jni_help.cpp: -------------------------------------------------------------------------------- 1 | #include "jni_help.h" 2 | #include "jni_log.h" 3 | 4 | #include 5 | 6 | template 7 | class scoped_local_ref { 8 | private: 9 | C_JNIEnv* _env; 10 | T _localRef; 11 | 12 | scoped_local_ref(const scoped_local_ref&); 13 | void operator=(const scoped_local_ref&); 14 | 15 | public: 16 | scoped_local_ref(C_JNIEnv* env, T localRef = nullptr) 17 | : _env(env), _localRef(localRef) {} 18 | 19 | void reset(T localRef = nullptr) { 20 | if (_localRef != nullptr) { 21 | (*_env)->DeleteLocalRef(reinterpret_cast(_env), _localRef); 22 | _localRef = nullptr; 23 | } 24 | } 25 | 26 | T get() const { 27 | return _localRef; 28 | } 29 | 30 | ~scoped_local_ref() { 31 | reset(); 32 | } 33 | }; 34 | 35 | static jclass findClass(C_JNIEnv* env, const char* className) { 36 | JNIEnv* e = reinterpret_cast(env); 37 | return (*env)->FindClass(e, className); 38 | } 39 | 40 | extern "C" int jniRegisterNativeMethods( 41 | C_JNIEnv* env, const char* className, 42 | const JNINativeMethod* gMethods, int numMethods) { 43 | JNIEnv* e = reinterpret_cast(env); 44 | 45 | LOGI("Registering %s's %d native methods...", className, numMethods); 46 | 47 | scoped_local_ref c(env, findClass(env, className)); 48 | if (c.get() == NULL) { 49 | char* msg; 50 | asprintf(&msg, "Native registration unable to find class '%s'; aborting...", className); 51 | e->FatalError(msg); 52 | } 53 | 54 | if ((*env)->RegisterNatives(e, c.get(), gMethods, numMethods) < 0) { 55 | char* msg; 56 | asprintf(&msg, "RegisterNatives failed for '%s'; aborting...", className); 57 | e->FatalError(msg); 58 | } 59 | 60 | return 0; 61 | } 62 | -------------------------------------------------------------------------------- /libtex/src/main/jni/port/jni_help.h: -------------------------------------------------------------------------------- 1 | #ifndef JNI_HELP_INCLUDED 2 | #define JNI_HELP_INCLUDED 3 | 4 | #include 5 | 6 | #ifndef NELEM 7 | #define NELEM(x) ((int)(sizeof(x) / sizeof((x)[0]))) 8 | #endif 9 | 10 | #ifdef __cplusplus 11 | extern "C" { 12 | #endif 13 | 14 | /* 15 | * Register one or more native methods with a particular class. 16 | * "className" looks like "java/lang/String". Aborts on failure. 17 | * TODO: fix all callers and change the return type to void. 18 | */ 19 | int jniRegisterNativeMethods( 20 | C_JNIEnv* env, const char* className, 21 | const JNINativeMethod* gMethods, int numMethods); 22 | 23 | #ifdef __cplusplus 24 | } 25 | #endif 26 | 27 | #if defined(__cplusplus) 28 | inline int jniRegisterNativeMethods( 29 | JNIEnv* env, const char* className, 30 | const JNINativeMethod* gMethods, int numMethods) { 31 | return jniRegisterNativeMethods(&env->functions, className, gMethods, numMethods); 32 | } 33 | #endif 34 | 35 | #endif // JNI_HELP_INCLUDED 36 | -------------------------------------------------------------------------------- /libtex/src/main/jni/port/jni_latex.cpp: -------------------------------------------------------------------------------- 1 | #include "jni_def.h" 2 | #include "jni_help.h" 3 | #include "jni_log.h" 4 | #include "latex.h" 5 | 6 | #include 7 | #include 8 | 9 | using namespace std; 10 | using namespace tex; 11 | 12 | static jboolean LaTeX_init(JNIEnv* env, jclass clazz, jstring resDir) { 13 | try { 14 | const char* rootDir = env->GetStringUTFChars(resDir, NULL); 15 | LOGI("Resources root dir: %s, initialize now...", rootDir); 16 | LaTeX::init(rootDir); 17 | env->ReleaseStringUTFChars(resDir, rootDir); 18 | LOGI("Initialized successfully."); 19 | return true; 20 | } catch (ex_tex& e) { 21 | LOGE("Failed to initialize the LaTeX engine, caused by: %s", e.what()); 22 | return false; 23 | } 24 | } 25 | 26 | static void LaTeX_release(JNIEnv* env, jclass clazz) { 27 | LOGI("Release LaTeX engine..."); 28 | LaTeX::release(); 29 | } 30 | 31 | static jlong LaTeX_parse( 32 | JNIEnv* env, jclass clazz, 33 | jstring ltx, jint width, jfloat textSize, jfloat lineSpace, jint foreground) { 34 | wstring value; 35 | const jchar* raw = env->GetStringChars(ltx, NULL); 36 | size_t len = env->GetStringLength(ltx); 37 | value.assign(raw, raw + len); 38 | env->ReleaseStringChars(ltx, raw); 39 | const char* str = env->GetStringUTFChars(ltx, NULL); 40 | LOGI("Parse: %s", str); 41 | env->ReleaseStringUTFChars(ltx, str); 42 | try { 43 | TeXRender* r = LaTeX::parse(value, width, textSize, lineSpace, foreground); 44 | return reinterpret_cast(r); 45 | } catch (exception& e) { 46 | LOGE("Failed to parse LaTeX, caused by: %s", e.what()); 47 | return 0; 48 | } 49 | } 50 | 51 | static void LaTeX_setDebug(JNIEnv* env, jclass clazz, jboolean debug) { 52 | bool b = static_cast(debug); 53 | LaTeX::setDebug(b); 54 | } 55 | 56 | static JNINativeMethod sMethods[] = { 57 | {"nInit", "(Ljava/lang/String;)Z", (void*)LaTeX_init}, 58 | {"nFree", "()V", (void*)LaTeX_release}, 59 | {"nParse", "(Ljava/lang/String;IFFI)J", (void*)LaTeX_parse}, 60 | {"nSetDebug", "(Z)V", (void*)LaTeX_setDebug}}; 61 | 62 | int registerLaTeX(JNIEnv* env) { 63 | return jniRegisterNativeMethods( 64 | env, "io/nano/tex/LaTeX", sMethods, NELEM(sMethods)); 65 | } 66 | -------------------------------------------------------------------------------- /libtex/src/main/jni/port/jni_log.h: -------------------------------------------------------------------------------- 1 | #ifndef JNI_LOG_H_INCLUDED 2 | #define JNI_LOG_H_INCLUDED 3 | 4 | #include 5 | #include 6 | #define __JNI_DEBUG 7 | #define LOG_TAG "tex" 8 | 9 | #ifndef LOGD 10 | #define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__) 11 | #endif 12 | 13 | #ifndef LOGE 14 | #define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__) 15 | #endif 16 | 17 | #ifndef LOGI 18 | #define LOGI(...) __android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__) 19 | #endif 20 | 21 | #endif // JNI_LOG_H_INCLUDED 22 | -------------------------------------------------------------------------------- /libtex/src/main/jni/port/jni_render.cpp: -------------------------------------------------------------------------------- 1 | #include "config.h" 2 | 3 | #ifdef __OS_Android__ 4 | 5 | #include "graphics_android.h" 6 | #include "jni_def.h" 7 | #include "jni_help.h" 8 | #include "jni_log.h" 9 | 10 | #include "latex.h" 11 | 12 | using namespace tex; 13 | 14 | static void TeXRender_draw( 15 | JNIEnv* env, jclass clazz, 16 | jlong ptr, jobject recorder, jint x, jint y) { 17 | TeXRender* r = reinterpret_cast(ptr); 18 | LOGI("Draw: %p, in position (%d, %d), with recorder: %p", r, x, y, recorder); 19 | Graphics2D_Android g2(recorder); 20 | r->draw(g2, x, y); 21 | } 22 | 23 | static jfloat TeXRender_getTextSize(JNIEnv* env, jclass clazz, jlong ptr) { 24 | TeXRender* r = reinterpret_cast(ptr); 25 | return r->getTextSize(); 26 | } 27 | 28 | static jint TeXRender_getHeight(JNIEnv* env, jclass clazz, jlong ptr) { 29 | TeXRender* r = reinterpret_cast(ptr); 30 | return r->getHeight(); 31 | } 32 | 33 | static jint TeXRender_getDepth(JNIEnv* env, jclass clazz, jlong ptr) { 34 | TeXRender* r = reinterpret_cast(ptr); 35 | return r->getDepth(); 36 | } 37 | 38 | static jint TeXRender_getWidth(JNIEnv* env, jclass clazz, jlong ptr) { 39 | TeXRender* r = reinterpret_cast(ptr); 40 | return r->getWidth(); 41 | } 42 | 43 | static jfloat TeXRender_getBaseline(JNIEnv* env, jclass clazz, jlong ptr) { 44 | TeXRender* r = reinterpret_cast(ptr); 45 | return r->getBaseline(); 46 | } 47 | 48 | static void TeXRender_setTextSize(JNIEnv* env, jclass clazz, jlong ptr, jfloat size) { 49 | TeXRender* r = reinterpret_cast(ptr); 50 | r->setTextSize((float)size); 51 | } 52 | 53 | static void TeXRender_setForeground(JNIEnv* env, jclass clazz, jlong ptr, jint c) { 54 | TeXRender* r = reinterpret_cast(ptr); 55 | r->setForeground((color)c); 56 | } 57 | 58 | static void TeXRender_setWidth(JNIEnv* env, jclass clazz, jlong ptr, jint width, jint align) { 59 | TeXRender* r = reinterpret_cast(ptr); 60 | r->setWidth(width, align); 61 | } 62 | 63 | static void TeXRender_setHeight(JNIEnv* env, jclass clazz, jlong ptr, jint height, jint align) { 64 | TeXRender* r = reinterpret_cast(ptr); 65 | r->setHeight(height, align); 66 | } 67 | 68 | static void TeXRender_finalize(JNIEnv* env, jclass clazz, jlong ptr) { 69 | TeXRender* r = reinterpret_cast(ptr); 70 | LOGI("TeXRender finalize: %p", r); 71 | delete r; 72 | } 73 | 74 | static JNINativeMethod sMethods[] = { 75 | {"nDraw", "(JLio/nano/tex/ActionRecorder;II)V", (void*)TeXRender_draw}, 76 | {"nGetTextSize", "(J)F", (void*)TeXRender_getTextSize}, 77 | {"nGetHeight", "(J)I", (void*)TeXRender_getHeight}, 78 | {"nGetDepth", "(J)I", (void*)TeXRender_getDepth}, 79 | {"nGetWidth", "(J)I", (void*)TeXRender_getWidth}, 80 | {"nGetBaseline", "(J)F", (void*)TeXRender_getBaseline}, 81 | {"nSetTextSize", "(JF)V", (void*)TeXRender_setTextSize}, 82 | {"nSetForeground", "(JI)V", (void*)TeXRender_setForeground}, 83 | {"nSetWidth", "(JII)V", (void*)TeXRender_setWidth}, 84 | {"nSetHeight", "(JII)V", (void*)TeXRender_setHeight}, 85 | {"nFinalize", "(J)V", (void*)TeXRender_finalize}}; 86 | 87 | int registerTeXRender(JNIEnv* env) { 88 | return jniRegisterNativeMethods( 89 | env, "io/nano/tex/TeXRender", sMethods, NELEM(sMethods)); 90 | } 91 | 92 | #endif // __OS_Android__ 93 | -------------------------------------------------------------------------------- /libtex/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | libtex 3 | 4 | -------------------------------------------------------------------------------- /readme/example.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/NanoMichael/AndroidLaTeXMath/c0159021c7349656b38bb4a702234f4ccc76d4d3/readme/example.jpg -------------------------------------------------------------------------------- /readme/logo.svg: -------------------------------------------------------------------------------- 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 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app', ':libtex' 2 | --------------------------------------------------------------------------------