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Fu_Quan 2025-11-20 11:32:05 +08:00
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.gitignore vendored Normal file
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*.iml
.gradle
/local.properties
/.idea/caches
/.idea/libraries
/.idea/modules.xml
/.idea/workspace.xml
/.idea/navEditor.xml
/.idea/assetWizardSettings.xml
.DS_Store
/build
/captures
.externalNativeBuild
.cxx
local.properties
# Gradle files
.gradle/
build/
# Local configuration file (sdk path, etc)
local.properties
# Log/OS Files
*.log
# Android Studio generated files and folders
captures/
.externalNativeBuild/
.cxx/
*.aab
*.apk
output-metadata.json
# IntelliJ
*.iml
.idea/
misc.xml
deploymentTargetDropDown.xml
render.experimental.xml
# Keystore files
*.jks
*.keystore
# Google Services (e.g. APIs or Firebase)
google-services.json
# Android Profiling
*.hprof

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app/.gitignore vendored Normal file
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/build

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app/build.gradle.kts Normal file
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plugins {
alias(libs.plugins.android.application)
}
android {
namespace = "moe.fuquan.einkdither"
compileSdk = 34
defaultConfig {
applicationId = "moe.fuquan.einkdither"
minSdk = 16
targetSdk = 34
versionCode = 1
versionName = "1.0"
testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
externalNativeBuild {
cmake {
cppFlags += ""
}
}
}
buildTypes {
release {
isMinifyEnabled = false
proguardFiles(
getDefaultProguardFile("proguard-android-optimize.txt"),
"proguard-rules.pro"
)
}
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8
}
externalNativeBuild {
cmake {
path = file("src/main/cpp/CMakeLists.txt")
version = "3.22.1"
}
}
ndkVersion = "19.2.5345600"
}
dependencies {
implementation(libs.appcompat)
implementation(libs.material)
compileOnly(libs.xposed)
}

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app/proguard-rules.pro vendored Normal file
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# Add project specific ProGuard rules here.
# You can control the set of applied configuration files using the
# proguardFiles setting in build.gradle.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html
# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}
# Uncomment this to preserve the line number information for
# debugging stack traces.
#-keepattributes SourceFile,LineNumberTable
# If you keep the line number information, uncomment this to
# hide the original source file name.
#-renamesourcefileattribute SourceFile

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app/src/main/AndroidManifest.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<application
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.EinkDither"
tools:targetApi="31" >
<meta-data android:name="xposedmodule" android:value="true"/>
<meta-data android:name="xposeddescription" android:value="Global image dithering for e-ink displays"/>
<meta-data android:name="xposedminversion" android:value="53"/>
</application>
</manifest>

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app/src/main/assets/xposed_init Normal file
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moe.fuquan.einkdither.DitherHook

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app/src/main/cpp/CMakeLists.txt Normal file
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# For more information about using CMake with Android Studio, read the
# documentation: https://d.android.com/studio/projects/add-native-code.html.
# For more examples on how to use CMake, see https://github.com/android/ndk-samples.
# Sets the minimum CMake version required for this project.
cmake_minimum_required(VERSION 3.22.1)
# Declares the project name. The project name can be accessed via ${ PROJECT_NAME},
# Since this is the top level CMakeLists.txt, the project name is also accessible
# with ${CMAKE_PROJECT_NAME} (both CMake variables are in-sync within the top level
# build script scope).
project("einkdither")
# Creates and names a library, sets it as either STATIC
# or SHARED, and provides the relative paths to its source code.
# You can define multiple libraries, and CMake builds them for you.
# Gradle automatically packages shared libraries with your APK.
#
# In this top level CMakeLists.txt, ${CMAKE_PROJECT_NAME} is used to define
# the target library name; in the sub-module's CMakeLists.txt, ${PROJECT_NAME}
# is preferred for the same purpose.
#
# In order to load a library into your app from Java/Kotlin, you must call
# System.loadLibrary() and pass the name of the library defined here;
# for GameActivity/NativeActivity derived applications, the same library name must be
# used in the AndroidManifest.xml file.
add_library(${CMAKE_PROJECT_NAME} SHARED
# List C/C++ source files with relative paths to this CMakeLists.txt.
einkdither.cpp)
# Specifies libraries CMake should link to your target library. You
# can link libraries from various origins, such as libraries defined in this
# build script, prebuilt third-party libraries, or Android system libraries.
target_link_libraries(${CMAKE_PROJECT_NAME}
# List libraries link to the target library
android
jnigraphics
log)

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app/src/main/cpp/einkdither.cpp Normal file
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#include <jni.h>
#include <android/bitmap.h>
#include <android/log.h>
#include <cstdint>
#include <cstring>
#include <algorithm>
#define LOG_TAG "EinkDither"
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__)
template <typename T>
static inline T clamp(T val, T minVal, T maxVal) {
return (val < minVal) ? minVal : (val > maxVal) ? maxVal : val;
}
int quantizeTo16Levels(int gray) {
return (gray * 15 + 127) / 255 * 17;
}
extern "C"
JNIEXPORT jobject JNICALL
Java_moe_fuquan_einkdither_DitherUtils_applyDithering(JNIEnv *env, jclass clazz, jobject bitmap) {
if (bitmap == nullptr) return nullptr;
AndroidBitmapInfo info;
void* pixels = nullptr;
if (AndroidBitmap_getInfo(env, bitmap, &info) < 0){
LOGE("AndroidBitmap_getInfo failed");
return bitmap;
}
// if (info.format != ANDROID_BITMAP_FORMAT_RGBA_8888) return bitmap;
if (AndroidBitmap_lockPixels(env, bitmap, &pixels) < 0){
LOGE("AndroidBitmap_getInfo failed");
return bitmap;
}
int width = info.width;
int height = info.height;
uint32_t* line = (uint32_t*)pixels;
// 转换为灰度数组
int** gray = new int*[height];
for (int y = 0; y < height; y++) {
gray[y] = new int[width];
for (int x = 0; x < width; x++) {
uint32_t pixel = line[y * width + x];
int alpha = (pixel >> 24) & 0xFF;
int r = (pixel >> 16) & 0xFF;
int g = (pixel >> 8) & 0xFF;
int b = (pixel) & 0xFF;
if (alpha == 0)
gray[y][x] = -1;
else
gray[y][x] = (r * 299 + g * 587 + b * 114) / 1000;
}
}
// Floyd-Steinberg 抖动
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
if (gray[y][x] == -1) {
line[y * width + x] = 0x00000000;
continue;
}
int oldPixel = gray[y][x];
int newPixel = quantizeTo16Levels(oldPixel);
int error = oldPixel - newPixel;
gray[y][x] = newPixel;
if (x + 1 < width && gray[y][x + 1] != -1)
gray[y][x + 1] = clamp(gray[y][x + 1] + error / 2, 0, 255);
if (y + 1 < height && gray[y + 1][x] != -1)
gray[y + 1][x] = clamp(gray[y + 1][x] + error / 2, 0, 255);
uint8_t g = gray[y][x];
line[y * width + x] = 0xFF000000 | (g << 16) | (g << 8) | g;
}
}
// 清理
for (int i = 0; i < height; i++) delete[] gray[i];
delete[] gray;
AndroidBitmap_unlockPixels(env, bitmap);
return bitmap;
}

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app/src/main/java/moe/fuquan/einkdither/DitherHook.java Normal file
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package moe.fuquan.einkdither;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.RectF;
import android.os.Build;
import android.util.Log;
import android.widget.ImageView;
import android.graphics.Rect;
import android.graphics.Canvas;
import java.io.File;
import java.lang.reflect.Method;
import java.util.Arrays;
import de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.IXposedHookZygoteInit;
import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage;
public class DitherHook implements IXposedHookZygoteInit, IXposedHookLoadPackage {
// 使用ThreadLocal避免递归调用
private static final ThreadLocal<Boolean> isProcessing = new ThreadLocal<Boolean>() {
@Override
protected Boolean initialValue() {
return false;
}
};
private static String modulePath;
String findModuleSo(String soName) {
File baseDir = new File(modulePath).getParentFile();
File libDir = new File(baseDir, "lib");
File[] archDirs = libDir.listFiles();
if (archDirs != null) {
for (File archDir : archDirs) {
File candidate = new File(archDir, soName);
if (candidate.exists()) {
return candidate.getAbsolutePath();
}
}
}
return null;
}
@Override
public void initZygote(StartupParam startupParam) throws Throwable {
modulePath = startupParam.modulePath;
}
@Override
public void handleLoadPackage(final XC_LoadPackage.LoadPackageParam lpparam) throws Throwable {
DitherUtils.load(findModuleSo("/libeinkdither.so"));
XposedBridge.log("EinkDither: Processing package " + lpparam.packageName);
// Hook Bitmap.createBitmap() 的所有重载方法
hookBitmapCreateMethods(lpparam);
Log.i
// Hook BitmapFactory 的所有decode方法
hookBitmapFactoryMethods(lpparam);
}
private void hookBitmapCreateMethods(XC_LoadPackage.LoadPackageParam lpparam) {
// 创建通用的hook逻辑
XC_MethodHook createBitmapHook = new XC_MethodHook() {
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
// 检查是否正在处理中，避免递归
if (isProcessing.get()) {
return;
}
try {
Bitmap result = (Bitmap) param.getResult();
if (result != null && !result.isRecycled() && shouldApplyDithering(result)) {
XposedBridge.log("EinkDither: Applying dithering to created bitmap " + result.getWidth() + "x" + result.getHeight());
// 设置处理标志
isProcessing.set(true);
//Bitmap dithered = applyDithering(result);
Bitmap dithered = DitherUtils.applyDithering(result);
if (dithered != null && dithered != result) {
param.setResult(dithered);
}
}
// } catch (Throwable t) {
// XposedBridge.log("EinkDither: Error in createBitmap hook: " + t.getMessage());
} finally {
// 清除处理标志
isProcessing.set(false);
}
}
};
try {
// Hook 1: createBitmap(int width, int height, Config config)
XposedHelpers.findAndHookMethod(
Bitmap.class,
"createBitmap",
int.class, int.class, Bitmap.Config.class,
createBitmapHook
);
// Hook 2: createBitmap(Bitmap source)
XposedHelpers.findAndHookMethod(
Bitmap.class,
"createBitmap",
Bitmap.class,
createBitmapHook
);
// Hook 3: createBitmap(Bitmap source, int x, int y, int width, int height)
XposedHelpers.findAndHookMethod(
Bitmap.class,
"createBitmap",
Bitmap.class, int.class, int.class, int.class, int.class,
createBitmapHook
);
// Hook 4: createBitmap(Bitmap source, int x, int y, int width, int height, Matrix m, boolean filter)
XposedHelpers.findAndHookMethod(
Bitmap.class,
"createBitmap",
Bitmap.class, int.class, int.class, int.class, int.class, Matrix.class, boolean.class,
createBitmapHook
);
// Hook 5: createBitmap(int[] colors, int offset, int stride, int width, int height, Config config)
XposedHelpers.findAndHookMethod(
Bitmap.class,
"createBitmap",
int[].class, int.class, int.class, int.class, int.class, Bitmap.Config.class,
createBitmapHook
);
// Hook 6: createBitmap(int[] colors, int width, int height, Config config)
XposedHelpers.findAndHookMethod(
Bitmap.class,
"createBitmap",
int[].class, int.class, int.class, Bitmap.Config.class,
createBitmapHook
);
XposedBridge.log("EinkDither: Successfully hooked all Bitmap.createBitmap() methods");
} catch (Throwable t) {
XposedBridge.log("EinkDither: Failed to hook Bitmap.createBitmap(): " + t.getMessage());
}
}
private void hookBitmapFactoryMethods(XC_LoadPackage.LoadPackageParam lpparam) {
// 创建通用的BitmapFactory hook逻辑
XC_MethodHook bitmapFactoryHook = new XC_MethodHook() {
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
// 检查是否正在处理中，避免递归
if (isProcessing.get()) {
return;
}
try {
Bitmap result = (Bitmap) param.getResult();
if (result != null && !result.isRecycled() && shouldApplyDithering(result)) {
XposedBridge.log("EinkDither: Applying dithering to BitmapFactory bitmap " + result.getWidth() + "x" + result.getHeight());
// 设置处理标志
isProcessing.set(true);
// Bitmap dithered = applyDithering(result);
Bitmap dithered = DitherUtils.applyDithering(result);
if (dithered != null && dithered != result) {
param.setResult(dithered);
}
}
} catch (Throwable t) {
XposedBridge.log("EinkDither: Error in BitmapFactory hook: " + t.getMessage());
} finally {
// 清除处理标志
isProcessing.set(false);
}
}
};
try {
// Hook BitmapFactory.decodeFile() 方法
XposedHelpers.findAndHookMethod(
BitmapFactory.class,
"decodeFile",
String.class,
bitmapFactoryHook
);
XposedHelpers.findAndHookMethod(
BitmapFactory.class,
"decodeFile",
String.class, BitmapFactory.Options.class,
bitmapFactoryHook
);
// Hook BitmapFactory.decodeResource() 方法
XposedHelpers.findAndHookMethod(
BitmapFactory.class,
"decodeResource",
android.content.res.Resources.class, int.class,
bitmapFactoryHook
);
XposedHelpers.findAndHookMethod(
BitmapFactory.class,
"decodeResource",
android.content.res.Resources.class, int.class, BitmapFactory.Options.class,
bitmapFactoryHook
);
// Hook BitmapFactory.decodeStream() 方法
XposedHelpers.findAndHookMethod(
BitmapFactory.class,
"decodeStream",
java.io.InputStream.class,
bitmapFactoryHook
);
XposedHelpers.findAndHookMethod(
BitmapFactory.class,
"decodeStream",
java.io.InputStream.class, Rect.class, BitmapFactory.Options.class,
bitmapFactoryHook
);
// Hook BitmapFactory.decodeByteArray() 方法
XposedHelpers.findAndHookMethod(
BitmapFactory.class,
"decodeByteArray",
byte[].class, int.class, int.class,
bitmapFactoryHook
);
XposedHelpers.findAndHookMethod(
BitmapFactory.class,
"decodeByteArray",
byte[].class, int.class, int.class, BitmapFactory.Options.class,
bitmapFactoryHook
);
// Hook BitmapFactory.decodeFileDescriptor() 方法
XposedHelpers.findAndHookMethod(
BitmapFactory.class,
"decodeFileDescriptor",
java.io.FileDescriptor.class,
bitmapFactoryHook
);
XposedHelpers.findAndHookMethod(
BitmapFactory.class,
"decodeFileDescriptor",
java.io.FileDescriptor.class, Rect.class, BitmapFactory.Options.class,
bitmapFactoryHook
);
// Hook BitmapFactory.decodeResourceStream() 方法
XposedHelpers.findAndHookMethod(
BitmapFactory.class,
"decodeResourceStream",
android.content.res.Resources.class, android.util.TypedValue.class,
java.io.InputStream.class, Rect.class, BitmapFactory.Options.class,
bitmapFactoryHook
);
XposedBridge.log("EinkDither: Successfully hooked all BitmapFactory methods");
} catch (Throwable t) {
XposedBridge.log("EinkDither: Failed to hook BitmapFactory methods: " + t.getMessage());
}
}
// 判断是否需要应用抖动
private boolean shouldApplyDithering(Bitmap bitmap) {
if (bitmap == null || bitmap.isRecycled()) {
return false;
}
// 只对足够大的位图应用抖动，避免处理小图标等
int width = bitmap.getWidth();
int height = bitmap.getHeight();
// 可以根据需要调整这个阈值
if (width < 64 || height < 64) {
return false;
}
// // 避免处理过大的图片，可能会导致性能问题
// if (width > 2048 || height > 2048) {
// return false;
// }
// 处理所有类型的位图，包括灰度图，因为墨水屏只有16色阶
Bitmap.Config config = bitmap.getConfig();
// 跳过一些可能有问题的格式
if (config == Bitmap.Config.HARDWARE) {
XposedBridge.log("EinkDither: Skipping HARDWARE config bitmap");
return false;
}
return config == Bitmap.Config.ARGB_8888 ||
config == Bitmap.Config.RGB_565 ||
config == Bitmap.Config.ARGB_4444 ||
config == Bitmap.Config.ALPHA_8 ||
config == null; // 某些情况下config可能为null
}
// Floyd–Steinberg 抖动算法 - 支持16色阶
private Bitmap applyDithering(Bitmap src) {
if (src == null || src.isRecycled()) {
XposedBridge.log("EinkDither: Source bitmap is null or recycled");
return src;
}
try {
int w = src.getWidth();
int h = src.getHeight();
if (w <= 0 || h <= 0) {
XposedBridge.log("EinkDither: Invalid bitmap dimensions: " + w + "x" + h);
return src;
}
// 根据图片大小选择算法
boolean useFastAlgorithm = (w * h > 500000); // 大于500k像素使用快速算法
// 检查位图是否可变，如果不可变则创建副本
Bitmap workBitmap = src;
boolean needsCopy = !src.isMutable();
if (needsCopy) {
try {
// 使用copy方法而不是createBitmap避免触发hook
workBitmap = src.copy(Bitmap.Config.ARGB_8888, true);
if (workBitmap == null) {
XposedBridge.log("EinkDither: Failed to create mutable copy, trying alternative");
// 尝试其他格式
workBitmap = src.copy(Bitmap.Config.RGB_565, true);
if (workBitmap == null) {
XposedBridge.log("EinkDither: All copy attempts failed");
return src;
}
}
} catch (Exception e) {
XposedBridge.log("EinkDither: Exception during copy: " + e.getMessage());
return src;
}
}
if (useFastAlgorithm) {
XposedBridge.log("EinkDither: Using fast ordered dithering for large image " + w + "x" + h);
return applyOrderedDithering(workBitmap);
} else {
XposedBridge.log("EinkDither: Using Floyd-Steinberg dithering for image " + w + "x" + h);
return applyFloydSteinbergDithering(workBitmap);
}
} catch (OutOfMemoryError e) {
XposedBridge.log("EinkDither: Out of memory during dithering: " + e.getMessage());
return src;
} catch (Throwable t) {
XposedBridge.log("EinkDither: Error in applyDithering: " + t.getMessage());
return src; // 出错时返回原图
}
}
// 快速有序抖动算法 - 适合大图片
private Bitmap applyOrderedDithering(Bitmap workBitmap) {
try {
int w = workBitmap.getWidth();
int h = workBitmap.getHeight();
// 4x4 Bayer矩阵
int[][] bayerMatrix = {
{0, 8, 2, 10},
{12, 4, 14, 6},
{3, 11, 1, 9},
{15, 7, 13, 5}
};
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
try {
int pixel = workBitmap.getPixel(x, y);
int alpha = (pixel >> 24) & 0xff;
if (alpha == 0) {
workBitmap.setPixel(x, y, 0x00000000);
continue;
}
int r = (pixel >> 16) & 0xff;
int g = (pixel >> 8) & 0xff;
int b = pixel & 0xff;
// 转换为灰度
int gray = (r * 299 + g * 587 + b * 114) / 1000;
// 应用有序抖动
int threshold = bayerMatrix[y % 4][x % 4] * 17; // 17 = 255/15
int quantized = quantizeTo16Levels(gray + threshold - 136); // 136 = 8*17，居中阈值
int finalColor = 0xFF000000 | (quantized << 16) | (quantized << 8) | quantized;
workBitmap.setPixel(x, y, finalColor);
} catch (Exception e) {
// 继续处理其他像素
}
}
}
XposedBridge.log("EinkDither: Successfully applied ordered dithering");
return workBitmap;
} catch (Exception e) {
XposedBridge.log("EinkDither: Error in ordered dithering: " + e.getMessage());
return workBitmap;
}
}
// Floyd-Steinberg抖动算法 - 适合小图片，效果更好
private Bitmap applyFloydSteinbergDithering(Bitmap workBitmap) {
try {
int w = workBitmap.getWidth();
int h = workBitmap.getHeight();
// 转换为灰度并应用16色阶抖动
int[][] gray = new int[h][w];
// 第一步：转换为灰度
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
try {
int pixel = workBitmap.getPixel(x, y);
int alpha = (pixel >> 24) & 0xff;
int r = (pixel >> 16) & 0xff;
int g = (pixel >> 8) & 0xff;
int b = pixel & 0xff;
// 如果是透明像素，保持透明
if (alpha == 0) {
gray[y][x] = -1; // 标记为透明
} else {
gray[y][x] = (r * 299 + g * 587 + b * 114) / 1000;
}
} catch (Exception e) {
gray[y][x] = 128; // 默认为中灰色
}
}
}
// 第二步：应用Floyd-Steinberg抖动到16色阶
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
try {
if (gray[y][x] == -1) {
// 透明像素保持透明
workBitmap.setPixel(x, y, 0x00000000);
continue;
}
int oldPixel = gray[y][x];
// 量化到16个级别
int newPixel = quantizeTo16Levels(oldPixel);
int error = oldPixel - newPixel;
gray[y][x] = newPixel;
// 分散误差到相邻像素 - 简化版本，只扩散到右边和下边
if (x + 1 < w && gray[y][x + 1] != -1) {
gray[y][x + 1] = Math.max(0, Math.min(255, gray[y][x + 1] + error / 2));
}
if (y + 1 < h && gray[y + 1][x] != -1) {
gray[y + 1][x] = Math.max(0, Math.min(255, gray[y + 1][x] + error / 2));
}
// 设置最终像素颜色 - 使用16色阶的灰度值
int finalGray = gray[y][x];
int finalColor = 0xFF000000 | (finalGray << 16) | (finalGray << 8) | finalGray;
workBitmap.setPixel(x, y, finalColor);
} catch (Exception e) {
// 继续处理其他像素
}
}
}
XposedBridge.log("EinkDither: Successfully applied Floyd-Steinberg dithering");
return workBitmap;
} catch (Exception e) {
XposedBridge.log("EinkDither: Error in Floyd-Steinberg dithering: " + e.getMessage());
return workBitmap;
}
}
// 将灰度值量化到16个级别
private int quantizeTo16Levels(int grayValue) {
// 确保值在有效范围内
grayValue = Math.max(0, Math.min(255, grayValue));
// 16个级别：0-15，对应灰度值 0, 17, 34, 51, 68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255
int level = Math.round(grayValue * 15.0f / 255.0f);
return level * 17; // 17 = 255/15，确保最大值是255
}
}

24
app/src/main/java/moe/fuquan/einkdither/DitherUtils.java Normal file
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@ -0,0 +1,24 @@
package moe.fuquan.einkdither;
import android.graphics.Bitmap;
import android.util.Log;
import de.robv.android.xposed.XposedBridge;
public class DitherUtils {
// static {
// System.loadLibrary("einkdither");
// }
public static void load(String path) {
XposedBridge.log("library path: " + path);
try {
System.load(path);
XposedBridge.log("load Jni library");
} catch (Throwable e) {
XposedBridge.log(e);
XposedBridge.log("load jni library have error ");
}
}
public static native Bitmap applyDithering(Bitmap src);
}

30
app/src/main/res/drawable-v24/ic_launcher_foreground.xml Normal file
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@ -0,0 +1,30 @@
<vector xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:aapt="http://schemas.android.com/aapt"
android:width="108dp"
android:height="108dp"
android:viewportWidth="108"
android:viewportHeight="108">
<path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
<aapt:attr name="android:fillColor">
<gradient
android:endX="85.84757"
android:endY="92.4963"
android:startX="42.9492"
android:startY="49.59793"
android:type="linear">
<item
android:color="#44000000"
android:offset="0.0" />
<item
android:color="#00000000"
android:offset="1.0" />
</gradient>
</aapt:attr>
</path>
<path
android:fillColor="#FFFFFF"
android:fillType="nonZero"
android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
android:strokeWidth="1"
android:strokeColor="#00000000" />
</vector>

170
app/src/main/res/drawable/ic_launcher_background.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="108dp"
android:height="108dp"
android:viewportWidth="108"
android:viewportHeight="108">
<path
android:fillColor="#3DDC84"
android:pathData="M0,0h108v108h-108z" />
<path
android:fillColor="#00000000"
android:pathData="M9,0L9,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,0L19,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M29,0L29,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M39,0L39,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M49,0L49,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M59,0L59,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M69,0L69,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M79,0L79,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M89,0L89,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M99,0L99,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,9L108,9"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,19L108,19"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,29L108,29"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,39L108,39"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,49L108,49"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,59L108,59"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,69L108,69"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,79L108,79"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,89L108,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,99L108,99"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,29L89,29"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,39L89,39"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,49L89,49"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,59L89,59"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,69L89,69"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,79L89,79"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M29,19L29,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M39,19L39,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M49,19L49,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M59,19L59,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M69,19L69,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M79,19L79,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
</vector>

6
app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
<background android:drawable="@drawable/ic_launcher_background" />
<foreground android:drawable="@drawable/ic_launcher_foreground" />
<monochrome android:drawable="@drawable/ic_launcher_foreground" />
</adaptive-icon>

6
app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
<background android:drawable="@drawable/ic_launcher_background" />
<foreground android:drawable="@drawable/ic_launcher_foreground" />
<monochrome android:drawable="@drawable/ic_launcher_foreground" />
</adaptive-icon>

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16
app/src/main/res/values-night/themes.xml Normal file
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<resources xmlns:tools="http://schemas.android.com/tools">
<!-- Base application theme. -->
<style name="Theme.EinkDither" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
<!-- Primary brand color. -->
<item name="colorPrimary">@color/purple_200</item>
<item name="colorPrimaryVariant">@color/purple_700</item>
<item name="colorOnPrimary">@color/black</item>
<!-- Secondary brand color. -->
<item name="colorSecondary">@color/teal_200</item>
<item name="colorSecondaryVariant">@color/teal_200</item>
<item name="colorOnSecondary">@color/black</item>
<!-- Status bar color. -->
<item name="android:statusBarColor" tools:targetApi="21">?attr/colorPrimaryVariant</item>
<!-- Customize your theme here. -->
</style>
</resources>

10
app/src/main/res/values/colors.xml Normal file
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@ -0,0 +1,10 @@
<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="purple_200">#FFBB86FC</color>
<color name="purple_500">#FF6200EE</color>
<color name="purple_700">#FF3700B3</color>
<color name="teal_200">#FF03DAC5</color>
<color name="teal_700">#FF018786</color>
<color name="black">#FF000000</color>
<color name="white">#FFFFFFFF</color>
</resources>

3
app/src/main/res/values/strings.xml Normal file
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@ -0,0 +1,3 @@
<resources>
<string name="app_name">EinkDither</string>
</resources>

16
app/src/main/res/values/themes.xml Normal file
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@ -0,0 +1,16 @@
<resources xmlns:tools="http://schemas.android.com/tools">
<!-- Base application theme. -->
<style name="Theme.EinkDither" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
<!-- Primary brand color. -->
<item name="colorPrimary">@color/purple_500</item>
<item name="colorPrimaryVariant">@color/purple_700</item>
<item name="colorOnPrimary">@color/white</item>
<!-- Secondary brand color. -->
<item name="colorSecondary">@color/teal_200</item>
<item name="colorSecondaryVariant">@color/teal_700</item>
<item name="colorOnSecondary">@color/black</item>
<!-- Status bar color. -->
<item name="android:statusBarColor" tools:targetApi="21">?attr/colorPrimaryVariant</item>
<!-- Customize your theme here. -->
</style>
</resources>

13
app/src/main/res/xml/backup_rules.xml Normal file
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<?xml version="1.0" encoding="utf-8"?><!--
Sample backup rules file; uncomment and customize as necessary.
See https://developer.android.com/guide/topics/data/autobackup
for details.
Note: This file is ignored for devices older that API 31
See https://developer.android.com/about/versions/12/backup-restore
-->
<full-backup-content>
<!--
<include domain="sharedpref" path="."/>
<exclude domain="sharedpref" path="device.xml"/>
-->
</full-backup-content>

19
app/src/main/res/xml/data_extraction_rules.xml Normal file
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<?xml version="1.0" encoding="utf-8"?><!--
Sample data extraction rules file; uncomment and customize as necessary.
See https://developer.android.com/about/versions/12/backup-restore#xml-changes
for details.
-->
<data-extraction-rules>
<cloud-backup>
<!-- TODO: Use <include> and <exclude> to control what is backed up.
<include .../>
<exclude .../>
-->
</cloud-backup>
<!--
<device-transfer>
<include .../>
<exclude .../>
</device-transfer>
-->
</data-extraction-rules>

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build.gradle.kts Normal file
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// Top-level build file where you can add configuration options common to all sub-projects/modules.
plugins {
alias(libs.plugins.android.application) apply false
}

21
gradle.properties Normal file
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# Project-wide Gradle settings.
# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.
# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. For more details, visit
# https://developer.android.com/r/tools/gradle-multi-project-decoupled-projects
# org.gradle.parallel=true
# AndroidX package structure to make it clearer which packages are bundled with the
# Android operating system, and which are packaged with your app's APK
# https://developer.android.com/topic/libraries/support-library/androidx-rn
android.useAndroidX=true
# Enables namespacing of each library's R class so that its R class includes only the
# resources declared in the library itself and none from the library's dependencies,
# thereby reducing the size of the R class for that library
android.nonTransitiveRClass=true

15
gradle/libs.versions.toml Normal file
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@ -0,0 +1,15 @@
[versions]
agp = "8.6.0"
espressoCore = "3.6.1"
appcompat = "1.1.0"
material = "1.1.0"
xposed = "82"
[libraries]
appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
material = { group = "com.google.android.material", name = "material", version.ref = "material" }
xposed = { group = "de.robv.android.xposed", name = "api", version.ref = "xposed" }
[plugins]
android-application = { id = "com.android.application", version.ref = "agp" }

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6
gradle/wrapper/gradle-wrapper.properties vendored Normal file
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#Sat May 17 00:25:33 CST 2025
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

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gradlew vendored Normal file
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#!/usr/bin/env sh
#
# Copyright 2015 the original author or authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
##############################################################################
##
## Gradle start up script for UN*X
##
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn () {
echo "$*"
}
die () {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MINGW* )
msys=true
;;
NONSTOP* )
nonstop=true
;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD="java"
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin or MSYS, switch paths to Windows format before running java
if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
JAVACMD=`cygpath --unix "$JAVACMD"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=`expr $i + 1`
done
case $i in
0) set -- ;;
1) set -- "$args0" ;;
2) set -- "$args0" "$args1" ;;
3) set -- "$args0" "$args1" "$args2" ;;
4) set -- "$args0" "$args1" "$args2" "$args3" ;;
5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Escape application args
save () {
for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
echo " "
}
APP_ARGS=`save "$@"`
# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
exec "$JAVACMD" "$@"

89
gradlew.bat vendored Normal file
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@ -0,0 +1,89 @@
@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto execute
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto execute
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

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settings.gradle.kts Normal file
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pluginManagement {
repositories {
google {
content {
includeGroupByRegex("com\\.android.*")
includeGroupByRegex("com\\.google.*")
includeGroupByRegex("androidx.*")
}
}
mavenCentral()
gradlePluginPortal()
}
}
dependencyResolutionManagement {
repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
repositories {
google()
mavenCentral()
maven("https://api.xposed.info/")
}
}
rootProject.name = "EinkDither"
include(":app")