From 852a8a00273c9128efeed0217a8e5d3fcd8bf780 Mon Sep 17 00:00:00 2001
From: Lena <lena@omega>
Date: Sat, 1 Aug 2026 00:00:00 +0000
Subject: app: harden mirroring lifecycle and state

---
 .../debug/java/invalid/lena/scrcpy/Pattern.java    | 115 +++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 app/src/debug/java/invalid/lena/scrcpy/Pattern.java

(limited to 'app/src/debug/java')

diff --git a/app/src/debug/java/invalid/lena/scrcpy/Pattern.java b/app/src/debug/java/invalid/lena/scrcpy/Pattern.java
new file mode 100644
index 0000000..39a5d42
--- /dev/null
+++ b/app/src/debug/java/invalid/lena/scrcpy/Pattern.java
@@ -0,0 +1,115 @@
+package invalid.lena.scrcpy;
+
+import android.app.Activity;
+import android.content.ClipData;
+import android.content.ClipboardManager;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.os.Bundle;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.WindowInsets;
+import android.view.WindowInsetsController;
+
+// Deterministic moving target for the two-emulator E2E test. Debug-only,
+// exported only in the debug manifest, and absent from release artifacts.
+public final class Pattern extends Activity {
+
+    private static final String TARGET_CLIPBOARD_TEXT = "scrcpy-e2e";
+    private static final String SOURCE_CLIPBOARD_TEXT = "source-e2e";
+    private static final String EXTRA_CLIPBOARD_TEXT = "clipboard_text";
+
+    private ClipboardManager clipboard;
+    private String clipboardText;
+    private final ClipboardManager.OnPrimaryClipChangedListener clipboardListener =
+            this::onClipboardChanged;
+
+    @Override
+    @SuppressWarnings("deprecation")
+    protected void onCreate(Bundle state) {
+        super.onCreate(state);
+        String requested = getIntent().getStringExtra(EXTRA_CLIPBOARD_TEXT);
+        clipboardText = SOURCE_CLIPBOARD_TEXT.equals(requested)
+                ? SOURCE_CLIPBOARD_TEXT : TARGET_CLIPBOARD_TEXT;
+        setContentView(new PatternView());
+        clipboard = getSystemService(ClipboardManager.class);
+        if (clipboard != null) clipboard.addPrimaryClipChangedListener(clipboardListener);
+        getWindow().setDecorFitsSystemWindows(false);
+        WindowInsetsController insets = getWindow().getInsetsController();
+        if (insets != null) insets.hide(WindowInsets.Type.systemBars());
+    }
+
+    @Override
+    protected void onDestroy() {
+        if (clipboard != null) clipboard.removePrimaryClipChangedListener(clipboardListener);
+        super.onDestroy();
+    }
+
+    private void onClipboardChanged() {
+        ClipData data = clipboard.getPrimaryClip();
+        if (data == null || data.getItemCount() == 0) return;
+        CharSequence text = data.getItemAt(0).getText();
+        if (SOURCE_CLIPBOARD_TEXT.contentEquals(text)) {
+            Log.i("pattern: clipboard from source");
+        }
+    }
+
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+        if (event.getAction() == KeyEvent.ACTION_UP) {
+            Log.i("pattern: key up code=%d", event.getKeyCode());
+        }
+        return super.dispatchKeyEvent(event);
+    }
+
+    private final class PatternView extends View {
+        private final Paint paint = new Paint();
+        private int step;
+
+        PatternView() {
+            super(Pattern.this);
+        }
+
+        @Override
+        public boolean onTouchEvent(MotionEvent event) {
+            if (event.getActionMasked() == MotionEvent.ACTION_UP) {
+                Log.i("pattern: touch up x=%d y=%d", (int) event.getX(), (int) event.getY());
+                performClick();
+            }
+            return true;
+        }
+
+        @Override
+        public boolean performClick() {
+            super.performClick();
+            if (clipboard != null) {
+                clipboard.setPrimaryClip(ClipData.newPlainText("e2e", clipboardText));
+                Log.i("pattern: clipboard set");
+            }
+            return true;
+        }
+
+        @Override
+        protected void onDraw(Canvas canvas) {
+            int w = getWidth();
+            int h = getHeight();
+            int mx = w / 2;
+            int my = h / 2;
+            paint.setColor(Color.rgb(224, 32, 32));
+            canvas.drawRect(0, 0, mx, my, paint);
+            paint.setColor(Color.rgb(32, 192, 48));
+            canvas.drawRect(mx, 0, w, my, paint);
+            paint.setColor(Color.rgb(32, 64, 224));
+            canvas.drawRect(0, my, mx, h, paint);
+            paint.setColor(Color.rgb(224, 192, 32));
+            canvas.drawRect(mx, my, w, h, paint);
+
+            paint.setColor(Color.WHITE);
+            int x = step++ % Math.max(1, w);
+            canvas.drawRect(x, 0, Math.min(w, x + 12), h, paint);
+            postInvalidateDelayed(33);
+        }
+    }
+}
-- 
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