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Return resized thumbnail (only Android) #28

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Return resized thumbnail (only Android) #28

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36 changes: 31 additions & 5 deletions android/src/main/java/me/hauvo/thumbnail/RNThumbnailModule.java
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Original file line number Diff line number Diff line change
Expand Up @@ -15,14 +15,13 @@
import android.os.Environment;
import android.util.Log;
import android.media.MediaMetadataRetriever;
import android.graphics.Matrix;
import android.graphics.Matrix;

import java.util.UUID;
import java.io.File;
import java.io.OutputStream;
import java.io.FileOutputStream;


public class RNThumbnailModule extends ReactContextBaseJavaModule {

private final ReactApplicationContext reactContext;
Expand All @@ -32,18 +31,39 @@ public RNThumbnailModule(ReactApplicationContext reactContext) {
this.reactContext = reactContext;
}

public Bitmap getResizedBitmap(Bitmap image, int maxSize) {
int width = image.getWidth();
int height = image.getHeight();

float bitmapRatio = (float) width / (float) height;
if (bitmapRatio > 1) {
width = maxSize;
height = (int) (width / bitmapRatio);
} else {
height = maxSize;
width = (int) (height * bitmapRatio);
}

return Bitmap.createScaledBitmap(image, width, height, true);
}

@Override
public String getName() {
return "RNThumbnail";
}

@ReactMethod
public void get(String filePath, Promise promise) {
filePath = filePath.replace("file://","");
public void getResized(String filePath, Integer maxSize, Promise promise) {
filePath = filePath.replace("file://", "");
MediaMetadataRetriever retriever = new MediaMetadataRetriever();
retriever.setDataSource(filePath);
Bitmap image = retriever.getFrameAtTime(1000000, MediaMetadataRetriever.OPTION_CLOSEST_SYNC);

if (maxSize != null) {
// resize the image based on the maxSize parameter
image = getResizedBitmap(image, maxSize);
}

String fullPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/thumb";

try {
Expand All @@ -64,7 +84,8 @@ public void get(String filePath, Promise promise) {
fOut.flush();
fOut.close();

// MediaStore.Images.Media.insertImage(reactContext.getContentResolver(), file.getAbsolutePath(), file.getName(), file.getName());
// MediaStore.Images.Media.insertImage(reactContext.getContentResolver(),
// file.getAbsolutePath(), file.getName(), file.getName());

WritableMap map = Arguments.createMap();

Expand All @@ -79,4 +100,9 @@ public void get(String filePath, Promise promise) {
promise.reject("E_RNThumnail_ERROR", e);
}
}

@ReactMethod
public void get(String filePath, Promise promise) {
getResized(filePath, null, promise);
}
}