Full screen QR code viewer

app/src/main/AndroidManifest.xml

@@ -245,5 +245,9 @@
             android:name=".activities.PolycentricModerationActivity"
             android:exported="false"
             android:screenOrientation="portrait" />
+        <activity
+            android:name=".activities.QRCodeFullscreenActivity"
+            android:screenOrientation="sensorPortrait"
+            android:theme="@style/Theme.FutoVideo.NoActionBar" />
     </application>
 </manifest>

app/src/main/java/com/futo/platformplayer/activities/QRCodeFullscreenActivity.kt

@@ -0,0 +1,109 @@
+package com.futo.platformplayer.activities
+
+import android.content.Context
+import android.graphics.Bitmap
+import android.graphics.Color
+import android.os.Bundle
+import android.util.TypedValue
+import android.view.View
+import android.widget.ImageButton
+import android.widget.ImageView
+import androidx.appcompat.app.AppCompatActivity
+import com.futo.platformplayer.R
+import com.futo.platformplayer.setNavigationBarColorAndIcons
+import com.futo.platformplayer.states.StateApp
+import com.google.zxing.BarcodeFormat
+import com.google.zxing.EncodeHintType
+import com.google.zxing.MultiFormatWriter
+import com.google.zxing.common.BitMatrix
+import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel
+
+class QRCodeFullscreenActivity : AppCompatActivity() {
+    companion object {
+        private const val EXTRA_QR_TEXT = "qr_text"
+        
+        fun createIntent(context: Context, qrText: String): android.content.Intent {
+            return android.content.Intent(context, QRCodeFullscreenActivity::class.java).apply {
+                putExtra(EXTRA_QR_TEXT, qrText)
+            }
+        }
+    }
+
+    override fun attachBaseContext(newBase: Context?) {
+        super.attachBaseContext(StateApp.instance.getLocaleContext(newBase))
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_qr_code_fullscreen)
+        setNavigationBarColorAndIcons()
+
+        val qrText = intent.getStringExtra(EXTRA_QR_TEXT)
+
+        val imageQR = findViewById<ImageView>(R.id.image_qr_fullscreen)
+        val buttonBack = findViewById<ImageButton>(R.id.button_back_fullscreen)
+        val buttonClose = findViewById<ImageButton>(R.id.button_close_fullscreen)
+
+        // Generate QR code bitmap from text
+        qrText?.let { text ->
+            try {
+                if (!isContentSuitableForQRCode(text)) {
+                    throw Exception("Data too big for QR code generation")
+                }
+                
+                val dimension = TypedValue.applyDimension(
+                    TypedValue.COMPLEX_UNIT_DIP, 300f, resources.displayMetrics
+                ).toInt()
+                val qrBitmap = generateQRCode(text, dimension, dimension)
+                imageQR.setImageBitmap(qrBitmap)
+            } catch (e: Exception) {
+                // If QR generation fails, show error or fallback
+                imageQR.setImageResource(R.drawable.ic_qr)
+            }
+        }
+
+        buttonBack.setOnClickListener {
+            finish()
+        }
+
+        buttonClose.setOnClickListener {
+            finish()
+        }
+
+        imageQR.setOnClickListener {
+            finish()
+        }
+    }
+
+    private fun isContentSuitableForQRCode(content: String): Boolean {
+        val bytes = content.toByteArray(Charsets.UTF_8)
+        return bytes.size <= 2300  // QR Code Version 40 with Error Correction Level M can hold ~2331 bytes
+    }
+
+    private fun generateQRCode(content: String, width: Int, height: Int): Bitmap {
+        if (!isContentSuitableForQRCode(content)) {
+            throw Exception("Data too big for QR code generation")
+        }
+        
+        val hints = java.util.EnumMap<EncodeHintType, Any>(EncodeHintType::class.java)
+        hints[EncodeHintType.ERROR_CORRECTION] = ErrorCorrectionLevel.M
+        hints[EncodeHintType.MARGIN] = 1
+        
+        val bitMatrix = MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints)
+        return bitMatrixToBitmap(bitMatrix)
+    }
+
+    private fun bitMatrixToBitmap(matrix: BitMatrix): Bitmap {
+        val width = matrix.width
+        val height = matrix.height
+        val bmp = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565)
+
+        for (x in 0 until width) {
+            for (y in 0 until height) {
+                bmp.setPixel(x, y, if (matrix[x, y]) Color.BLACK else Color.WHITE)
+            }
+        }
+        return bmp
+    }
+}
+

app/src/main/res/layout/activity_qr_code_fullscreen.xml

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/black">
+
+    <!-- Top navigation bar -->
+    <ImageButton
+        android:id="@+id/button_back_fullscreen"
+        android:layout_width="50dp"
+        android:layout_height="50dp"
+        android:contentDescription="@string/cd_button_back"
+        android:padding="10dp"
+        android:scaleType="fitCenter"
+        android:background="?android:attr/selectableItemBackgroundBorderless"
+        app:srcCompat="@drawable/ic_back_thin_white_16dp"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        android:layout_marginTop="16dp"
+        android:layout_marginStart="16dp" />
+
+    <ImageButton
+        android:id="@+id/button_close_fullscreen"
+        android:layout_width="50dp"
+        android:layout_height="50dp"
+        android:contentDescription="@string/cd_button_close"
+        android:padding="10dp"
+        android:scaleType="fitCenter"
+        android:background="?android:attr/selectableItemBackgroundBorderless"
+        app:srcCompat="@drawable/ic_close"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        android:layout_marginTop="16dp"
+        android:layout_marginEnd="16dp" />
+
+    <!-- Full screen QR code -->
+    <ImageView
+        android:id="@+id/image_qr_fullscreen"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:scaleType="fitCenter"
+        android:background="?android:attr/selectableItemBackgroundBorderless"
+        android:padding="40dp"
+        app:layout_constraintTop_toBottomOf="@id/button_back_fullscreen"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        android:layout_marginTop="20dp"
+        android:layout_marginBottom="20dp"
+        android:layout_marginStart="20dp"
+        android:layout_marginEnd="20dp" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
+