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Merged
merged 1 commit into from
May 28, 2022
Merged

chore: doInBackground #317

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116 changes: 85 additions & 31 deletions android/src/main/java/fr/greweb/reactnativeviewshot/ViewShot.java
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Original file line number Diff line number Diff line change
Expand Up @@ -8,16 +8,22 @@
import android.graphics.Paint;
import android.graphics.Point;
import android.net.Uri;

import androidx.annotation.IntDef;
import androidx.annotation.NonNull;
import androidx.annotation.StringDef;

import android.os.Build;
import android.os.Handler;
import android.os.HandlerThread;
import android.util.Base64;
import android.util.Log;
import android.view.TextureView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ScrollView;

import com.facebook.react.bridge.LifecycleEventListener;
import com.facebook.react.bridge.Promise;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.uimanager.NativeViewHierarchyManager;
Expand Down Expand Up @@ -47,7 +53,7 @@
/**
* Snapshot utility class allow to screenshot a view.
*/
public class ViewShot implements UIBlock {
public class ViewShot implements UIBlock, LifecycleEventListener {
//region Constants
/**
* Tag fort Class logs.
Expand All @@ -66,6 +72,30 @@ public class ViewShot implements UIBlock {
*/
private static final int ARGB_SIZE = 4;

private HandlerThread mBgThread;
private Handler mBgHandler;

@Override
public void onHostResume() {

}

@Override
public void onHostPause() {

}

@Override
public void onHostDestroy() {
this.reactContext.removeLifecycleEventListener(this);
mBgHandler.post(new Runnable() {
@Override
public void run() {
cleanup();
}
});
}

@SuppressWarnings("WeakerAccess")
@IntDef({Formats.JPEG, Formats.PNG, Formats.WEBP, Formats.RAW})
public @interface Formats {
Expand Down Expand Up @@ -157,44 +187,68 @@ public ViewShot(
this.reactContext = reactContext;
this.currentActivity = currentActivity;
this.promise = promise;

reactContext.addLifecycleEventListener(this);

// bg hanadler for non UI heavy work
mBgThread = new HandlerThread("RNViewShot-Handler-Thread");
mBgThread.start();
mBgHandler = new Handler(mBgThread.getLooper());
}
//endregion

//region Overrides
@Override
public void execute(NativeViewHierarchyManager nativeViewHierarchyManager) {
final View view;
private void cleanup() {
if (mBgThread != null) {
if (Build.VERSION.SDK_INT < 18) {
mBgThread.quit();
} else {
mBgThread.quitSafely();
}

if (tag == -1) {
view = currentActivity.getWindow().getDecorView().findViewById(android.R.id.content);
} else {
view = nativeViewHierarchyManager.resolveView(tag);
mBgThread = null;
}
}

if (view == null) {
Log.e(TAG, "No view found with reactTag: " + tag, new AssertionError());
promise.reject(ERROR_UNABLE_TO_SNAPSHOT, "No view found with reactTag: " + tag);
return;
}
//region Overrides
@Override
public void execute(final NativeViewHierarchyManager nativeViewHierarchyManager) {
mBgHandler.post(new Runnable() {
@Override
public void run() {
final View view;

if (tag == -1) {
view = currentActivity.getWindow().getDecorView().findViewById(android.R.id.content);
} else {
view = nativeViewHierarchyManager.resolveView(tag);
}

try {
final ReusableByteArrayOutputStream stream = new ReusableByteArrayOutputStream(outputBuffer);
stream.setSize(proposeSize(view));
outputBuffer = stream.innerBuffer();

if (Results.TEMP_FILE.equals(result) && Formats.RAW == this.format) {
saveToRawFileOnDevice(view);
} else if (Results.TEMP_FILE.equals(result) && Formats.RAW != this.format) {
saveToTempFileOnDevice(view);
} else if (Results.BASE_64.equals(result) || Results.ZIP_BASE_64.equals(result)) {
saveToBase64String(view);
} else if (Results.DATA_URI.equals(result)) {
saveToDataUriString(view);
if (view == null) {
Log.e(TAG, "No view found with reactTag: " + tag, new AssertionError());
promise.reject(ERROR_UNABLE_TO_SNAPSHOT, "No view found with reactTag: " + tag);
return;
}

try {
final ReusableByteArrayOutputStream stream = new ReusableByteArrayOutputStream(outputBuffer);
stream.setSize(proposeSize(view));
outputBuffer = stream.innerBuffer();

if (Results.TEMP_FILE.equals(result) && Formats.RAW == format) {
saveToRawFileOnDevice(view);
} else if (Results.TEMP_FILE.equals(result) && Formats.RAW != format) {
saveToTempFileOnDevice(view);
} else if (Results.BASE_64.equals(result) || Results.ZIP_BASE_64.equals(result)) {
saveToBase64String(view);
} else if (Results.DATA_URI.equals(result)) {
saveToDataUriString(view);
}
} catch (final Throwable ex) {
Log.e(TAG, "Failed to capture view snapshot", ex);
promise.reject(ERROR_UNABLE_TO_SNAPSHOT, "Failed to capture view snapshot");
}
}
} catch (final Throwable ex) {
Log.e(TAG, "Failed to capture view snapshot", ex);
promise.reject(ERROR_UNABLE_TO_SNAPSHOT, "Failed to capture view snapshot");
}
});
}
//endregion

Expand Down