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feat(android): enable two-axis draggable overlay window #153

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feat(android): enable two-axis draggable overlay window #153

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59 changes: 39 additions & 20 deletions android/src/main/java/in/jvapps/system_alert_window/services/WindowServiceNew.java
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@
import android.graphics.PixelFormat;
import android.os.Build;
import android.os.IBinder;
import android.util.DisplayMetrics;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
Expand All @@ -36,7 +37,6 @@
import io.flutter.embedding.android.FlutterView;
import io.flutter.embedding.engine.FlutterEngine;
import io.flutter.embedding.engine.FlutterEngineCache;

public class WindowServiceNew extends Service implements View.OnTouchListener {

private static final String TAG = WindowServiceNew.class.getSimpleName();
Expand All @@ -45,18 +45,23 @@ public class WindowServiceNew extends Service implements View.OnTouchListener {
public static final String INTENT_EXTRA_IS_UPDATE_WINDOW = "IsUpdateWindow";
public static final String INTENT_EXTRA_IS_CLOSE_WINDOW = "IsCloseWindow";


private WindowManager windowManager;

private String windowGravity;
private int windowWidth;
private int windowHeight;


private FlutterView flutterView;
private int paramFlags = Build.VERSION.SDK_INT >= Build.VERSION_CODES.O ? WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED : WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
private int paramFlags = Build.VERSION.SDK_INT >= Build.VERSION_CODES.O
? WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
: WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
private int paramsFromDart;
private final int paramType = Build.VERSION.SDK_INT >= Build.VERSION_CODES.O ? WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY : WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
private final int paramType = Build.VERSION.SDK_INT >= Build.VERSION_CODES.O
? WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY
: WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;

// Track both axes for free drag
private float offsetX;
private float offsetY;
private boolean moving;

Expand All @@ -66,9 +71,8 @@ public void onCreate() {
createNotificationChannel();
Intent notificationIntent = new Intent(this, SystemAlertWindowPlugin.class);
PendingIntent pendingIntent;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.S) {
pendingIntent = PendingIntent.getActivity(this,
0, notificationIntent, PendingIntent.FLAG_MUTABLE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_MUTABLE);
} else {
pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
}
Expand All @@ -86,7 +90,6 @@ public void onCreate() {

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
//Toast.makeText(this, "service starting", Toast.LENGTH_SHORT).show();
if (null != intent && intent.getExtras() != null) {
ContextHolder.setApplicationContext(this);
@SuppressWarnings("unchecked")
Expand Down Expand Up @@ -138,18 +141,28 @@ private void setWindowLayoutFromMap(HashMap<String, Object> paramsMap) {
}

private WindowManager.LayoutParams getLayoutParams() {
final WindowManager.LayoutParams params;
params = new WindowManager.LayoutParams();
params.width = (windowWidth == 0) ? WindowManager.LayoutParams.MATCH_PARENT : Commons.getPixelsFromDp(this, windowWidth);
params.height = (windowHeight == 0) ? WindowManager.LayoutParams.WRAP_CONTENT : Commons.getPixelsFromDp(this, windowHeight);
final WindowManager.LayoutParams params = new WindowManager.LayoutParams();
int widthPx = (windowWidth == 0) ? WindowManager.LayoutParams.MATCH_PARENT : Commons.getPixelsFromDp(this, windowWidth);
int heightPx = (windowHeight == 0) ? WindowManager.LayoutParams.WRAP_CONTENT : Commons.getPixelsFromDp(this, windowHeight);
params.width = widthPx;
params.height = heightPx;
params.format = PixelFormat.TRANSLUCENT;
params.type = paramType;
params.flags |= paramFlags;
params.flags |= paramsFromDart;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S && Commons.isClickDisabled) {
params.alpha = 0.8f;
}
params.gravity = Commons.getGravity(windowGravity, Gravity.TOP);
// Use TOP|START so both params.x and params.y are measured from the
// top-left corner of the screen, enabling free drag in all directions.
params.gravity = Gravity.TOP | Gravity.START;

// Center the overlay horizontally on first display
if (windowWidth > 0) {
DisplayMetrics metrics = getResources().getDisplayMetrics();
params.x = (metrics.widthPixels - widthPx) / 2;
}
params.y = Commons.getPixelsFromDp(this, 100); // default 100dp from top
return params;
}

Expand All @@ -165,6 +178,7 @@ private void createWindow(HashMap<String, Object> paramsMap) {
throw new IllegalStateException("FlutterEngine not available");
}
engine.getLifecycleChannel().appIsResumed();

flutterView = new FlutterView(getApplicationContext(), new FlutterTextureView(getApplicationContext()));
flutterView.attachToFlutterEngine(Objects.requireNonNull(FlutterEngineCache.getInstance().get(Constants.FLUTTER_CACHE_ENGINE)));
flutterView.setFitsSystemWindows(true);
Expand Down Expand Up @@ -224,10 +238,10 @@ private void closeWindow(boolean isStopService) {
LogUtils.getInstance().i(TAG, "Closing the overlay window");
try {
if (windowManager != null && flutterView != null) {
windowManager.removeView(flutterView);
windowManager = null;
flutterView.detachFromFlutterEngine();
LogUtils.getInstance().i(TAG, "Successfully closed overlay window");
windowManager.removeView(flutterView);
windowManager = null;
flutterView.detachFromFlutterEngine();
LogUtils.getInstance().i(TAG, "Successfully closed overlay window");
}
} catch (IllegalArgumentException e) {
LogUtils.getInstance().e(TAG, "view not found");
Expand All @@ -244,15 +258,20 @@ public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
moving = false;
offsetX = event.getRawX();
offsetY = event.getRawY();
break;
case MotionEvent.ACTION_MOVE:
float dx = event.getRawX() - offsetX;
float dy = event.getRawY() - offsetY;
if (!moving && Math.abs(dy) > 25) {
// Start moving if distance in either axis exceeds threshold
if (!moving && (Math.abs(dx) > 10 || Math.abs(dy) > 10)) {
moving = true;
}
if (moving) {
offsetX = event.getRawX();
offsetY = event.getRawY();
params.x = params.x + (int) dx;
params.y = params.y + (int) dy;
windowManager.updateViewLayout(flutterView, params);
}
Expand Down Expand Up @@ -286,4 +305,4 @@ public void onDestroy() {
public IBinder onBind(Intent intent) {
return null;
}
}
}