Support overwriting original image file

README.md

@@ -1,7 +1,9 @@
 # Resizer
-[![](https://jitpack.io/v/hkk595/Resizer.svg)](https://jitpack.io/#hkk595/Resizer)
+[![Android Arsenal](https://img.shields.io/badge/Android%20Arsenal-Resizer-green.svg?style=flat)](https://android-arsenal.com/details/1/6155) [![](https://jitpack.io/v/hkk595/Resizer.svg)](https://jitpack.io/#hkk595/Resizer)
 
-Inspired by zetbaitsu's [Compressor](https://github.com/zetbaitsu/Compressor), Resizer is a lightweight and easy-to-use Android library for image resizing. It allows you to create a smaller or bigger image from the original image while keeping the aspect ratio.
+<p align="center"><img width="50%" height="auto" src="https://raw.githubusercontent.com/hkk595/Resizer/master/app/src/main/res/drawable/library_logo.png"/></p>
+
+Inspired by zetbaitsu's [Compressor](https://github.com/zetbaitsu/Compressor), Resizer is a lightweight and easy-to-use Android library for image scaling. It allows you to resize an image file to a smaller or bigger one while keeping the aspect ratio.
 
 #### Include Resizer into your project
 1. Add the JitPack repository to your top-level build.gradle at the end of repositories
@@ -15,7 +17,7 @@ allprojects {
 2. Add the dependency in your module-level build.gradle
 ```groovy
 dependencies {
-    compile 'com.github.hkk595:Resizer:v1.0'
+    compile 'com.github.hkk595:Resizer:v1.1'
 }
 ```
 

app/src/main/java/me/echodev/resizer/Resizer.java

@@ -2,15 +2,14 @@
 
 import android.content.Context;
 import android.graphics.Bitmap;
-import android.graphics.BitmapFactory;
 import android.os.Environment;
 
 import java.io.File;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.util.concurrent.Callable;
 
 import io.reactivex.Flowable;
+import me.echodev.resizer.util.ImageUtils;
 
 /**
  * Created by K.K. Ho on 1/9/2017.
@@ -65,63 +64,11 @@ public Resizer setSourceImage(File sourceImage) {
     }
 
     public File getResizedFile() throws IOException {
-        File file = new File(destinationDirPath);
-        if (!file.exists()) {
-            file.mkdirs();
-        }
-
-        // Prepare the new file name and path
-        String originalFileName = sourceImage.getName();
-        String targetFileName;
-        String targetFileExtension = "." + compressFormat.name().toLowerCase().replace("jpeg", "jpg");
-
-        int extensionIndex = originalFileName.lastIndexOf('.');
-        if (extensionIndex == -1) {
-            targetFileName = originalFileName + targetFileExtension;
-        } else {
-            targetFileName = originalFileName.substring(0, extensionIndex) + targetFileExtension;
-        }
-
-        String destinationFilePath = destinationDirPath + File.separator + targetFileName;
-
-        // Write the resized image to the new file
-        FileOutputStream fileOutputStream = null;
-        try {
-            fileOutputStream = new FileOutputStream(destinationFilePath);
-            getResizedBitmap().compress(compressFormat, quality, fileOutputStream);
-        } finally {
-            if (fileOutputStream != null) {
-                fileOutputStream.flush();
-                fileOutputStream.close();
-            }
-        }
-
-        return new File(destinationFilePath);
+        return ImageUtils.getScaledImage(targetLength, quality, compressFormat, destinationDirPath, sourceImage);
     }
 
     public Bitmap getResizedBitmap() throws IOException {
-        BitmapFactory.Options options = new BitmapFactory.Options();
-        options.inJustDecodeBounds = false;
-        Bitmap bitmap = BitmapFactory.decodeFile(sourceImage.getAbsolutePath(), options);
-
-        // Get the dimensions of the original bitmap
-        int originalWidth = options.outWidth;
-        int originalHeight = options.outHeight;
-        float aspectRatio = (float) originalWidth / originalHeight;
-
-        // Calculate the target dimensions
-        int targetWidth, targetHeight;
-
-        if (originalWidth > originalHeight) {
-            targetWidth = targetLength;
-            targetHeight = Math.round(targetWidth / aspectRatio);
-        } else {
-            aspectRatio = 1 / aspectRatio;
-            targetHeight = targetLength;
-            targetWidth = Math.round(targetHeight / aspectRatio);
-        }
-
-        return Bitmap.createScaledBitmap(bitmap, targetWidth, targetHeight, true);
+        return ImageUtils.getScaledBitmap(targetLength, sourceImage);
     }
 
     public Flowable<File> getResizedFileAsFlowable() {

app/src/main/java/me/echodev/resizer/util/FileUtils.java

@@ -0,0 +1,42 @@
+package me.echodev.resizer.util;
+
+import android.graphics.Bitmap;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+/**
+ * Created by K.K. Ho on 3/9/2017.
+ */
+
+public class FileUtils {
+    public static String getDestinationFilePath(Bitmap.CompressFormat compressFormat, String destinationDirPath, File sourceImage) {
+        String originalFileName = sourceImage.getName();
+        String targetFileName;
+        String targetFileExtension = "." + compressFormat.name().toLowerCase().replace("jpeg", "jpg");
+
+        int extensionIndex = originalFileName.lastIndexOf('.');
+        if (extensionIndex == -1) {
+            targetFileName = originalFileName + targetFileExtension;
+        } else {
+            targetFileName = originalFileName.substring(0, extensionIndex) + targetFileExtension;
+        }
+
+        return destinationDirPath + File.separator + targetFileName;
+    }
+
+    public static void writeBitmapToFile(Bitmap bitmap, Bitmap.CompressFormat compressFormat, int quality, String filePath) throws IOException {
+        FileOutputStream fileOutputStream = null;
+
+        try {
+            fileOutputStream = new FileOutputStream(filePath);
+            bitmap.compress(compressFormat, quality, fileOutputStream);
+        } finally {
+            if (fileOutputStream != null) {
+                fileOutputStream.flush();
+                fileOutputStream.close();
+            }
+        }
+    }
+}

app/src/main/java/me/echodev/resizer/util/ImageUtils.java

@@ -0,0 +1,54 @@
+package me.echodev.resizer.util;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+
+import java.io.File;
+import java.io.IOException;
+
+/**
+ * Created by K.K. Ho on 3/9/2017.
+ */
+
+public class ImageUtils {
+    public static File getScaledImage(int targetLength, int quality, Bitmap.CompressFormat compressFormat, String destinationDirPath, File sourceImage) throws IOException {
+        File file = new File(destinationDirPath);
+        if (!file.exists()) {
+            file.mkdirs();
+        }
+
+        // Prepare the new file name and path
+        String destinationFilePath = FileUtils.getDestinationFilePath(compressFormat, destinationDirPath, sourceImage);
+
+        // Write the resized image to the new file
+        Bitmap scaledBitmap = getScaledBitmap(targetLength, sourceImage);
+        FileUtils.writeBitmapToFile(scaledBitmap, compressFormat, quality, destinationFilePath);
+
+        return new File(destinationFilePath);
+    }
+
+    public static Bitmap getScaledBitmap(int targetLength, File sourceImage) {
+        BitmapFactory.Options options = new BitmapFactory.Options();
+        options.inJustDecodeBounds = false;
+        Bitmap bitmap = BitmapFactory.decodeFile(sourceImage.getAbsolutePath(), options);
+
+        // Get the dimensions of the original bitmap
+        int originalWidth = options.outWidth;
+        int originalHeight = options.outHeight;
+        float aspectRatio = (float) originalWidth / originalHeight;
+
+        // Calculate the target dimensions
+        int targetWidth, targetHeight;
+
+        if (originalWidth > originalHeight) {
+            targetWidth = targetLength;
+            targetHeight = Math.round(targetWidth / aspectRatio);
+        } else {
+            aspectRatio = 1 / aspectRatio;
+            targetHeight = targetLength;
+            targetWidth = Math.round(targetHeight / aspectRatio);
+        }
+
+        return Bitmap.createScaledBitmap(bitmap, targetWidth, targetHeight, true);
+    }
+}