Implement low-light whitening effect(closes #7)

0xf104a · Mar 30, 2024 · 100866f · 100866f
1 parent 83aa7e4
commit 100866f
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Showing 6 changed files with 32 additions and 5 deletions.
diff --git a/app/src/main/java/com/polar/mirror/LowLightController.java b/app/src/main/java/com/polar/mirror/LowLightController.java
@@ -9,27 +9,32 @@
 import android.graphics.LightingColorFilter;
 import android.graphics.Paint;
 import android.util.Log;
+import android.view.View;
 import android.view.WindowManager;
+import android.widget.ImageView;
 
 import androidx.camera.core.Preview;
 
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
 
 /**
- * Implements logic of controlling low-light mode
+ * Implements low-light mode
  */
 public class LowLightController {
  private final Activity mActivity;
  private float lastBrightness = 1;
  public boolean isLowLightModeEnabled = false;
- private FloatingActionButton mLowLightModeButton;
+ private final FloatingActionButton mLowLightModeButton;
+ private final ImageView mLowLightOverlay;
  private static final String TAG = "LowLightController";
  private static final int WHITENING_VALUE = 128;
 
 
- LowLightController(Activity activity, FloatingActionButton lowLightModeButton){
+ LowLightController(Activity activity, FloatingActionButton lowLightModeButton,
+ ImageView lowLightOverlay){
  mActivity = activity;
  mLowLightModeButton = lowLightModeButton;
+ mLowLightOverlay = lowLightOverlay;
  }
 
  private void enableLowLightMode(){
@@ -39,6 +44,8 @@ private void enableLowLightMode(){
  mActivity.getWindow().setAttributes(layout);
  //Set image on FAB
  mLowLightModeButton.setImageResource(R.drawable.flashlight_off);
+ //Enable whitening overlay
+ mLowLightOverlay.setVisibility(View.VISIBLE);
  }
 
  private void disableLowLightMode(){
@@ -48,6 +55,8 @@ private void disableLowLightMode(){
  mActivity.getWindow().setAttributes(layout);
  //Set image on FAB
  mLowLightModeButton.setImageResource(R.drawable.flashlight_on);
+ //Disable whitening overlay
+ mLowLightOverlay.setVisibility(View.GONE);
  }
 
  /**

diff --git a/app/src/main/java/com/polar/mirror/MainActivity.java b/app/src/main/java/com/polar/mirror/MainActivity.java
@@ -57,10 +57,14 @@ protected void onCreate(Bundle savedInstanceState) {
  //Get low-light FAB
  FloatingActionButton lowLightModeButton = findViewById(R.id.low_light_button);
 
+ //Get low-light overlay
+ ImageView lowLightOverlay = findViewById(R.id.low_light_overlay_view);
+
  //Start camera
  try {
  startCamera();
- mLowLightController = new LowLightController(this, lowLightModeButton);
+ mLowLightController = new LowLightController(this, lowLightModeButton,
+ lowLightOverlay);
  } catch (ExecutionException | InterruptedException e) {
  final String toastText = getString(R.string.can_not_start_camera);
  Toast.makeText(this, toastText, Toast.LENGTH_LONG).show();

diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
@@ -20,6 +20,16 @@
  android:scaleType="centerCrop"
  android:contentDescription="@string/stop_view_desc" />
 
+ <ImageView
+ android:id="@+id/low_light_overlay_view"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:scaleType="centerCrop"
+ android:background="@color/white"
+ android:alpha="0.3"
+ android:visibility="gone"
+ android:contentDescription="@string/low_light_mode_overlay" />
+
  <View
  android:id="@+id/overlay_view"
  android:layout_width="match_parent"
@@ -30,6 +40,7 @@
  app:layout_constraintEnd_toEndOf="parent"
  app:layout_constraintStart_toStartOf="parent" />
 
+
  <include layout="@layout/action_panel" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
@@ -7,5 +7,6 @@
  <string name="tap_to_show_actions">Kliknij gdziekolwiek, aby wyświetlić menu akcji</string>
  <string name="can_not_start_camera">Brak dostępu do kamery</string>
  <string name="no_camera_permissions">Dostęp do kamery nie został przyznany. Użyj aplikacji Ustawienia, aby pryznać dostęp</string>
- <string name="low_light">Tryb ciemonści</string>
+ <string name="low_light">Tryb ciemności</string>
+ <string name="low_light_mode_overlay">Overlay trybu ciemności</string>
 </resources>
diff --git a/app/src/main/res/values-uk/strings.xml b/app/src/main/res/values-uk/strings.xml
@@ -7,4 +7,5 @@
  <string name="can_not_start_camera">Не вдалося отримати доступ до камери</string>
  <string name="no_camera_permissions">Доступ до камери не надано. Скористуйтесь застосунком Налаштування, аби надати доступ вручну</string>
  <string name="low_light">Режим пітьми</string>
+ <string name="low_light_mode_overlay">Оверлей режим пітьми</string>
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
@@ -7,4 +7,5 @@
  <string name="can_not_start_camera">Can not access camera</string>
  <string name="no_camera_permissions">Camera permissions was not granted. Use Settings app to grant it.</string>
  <string name="low_light">Dark mode</string>
+ <string name="low_light_mode_overlay">Low light mode overlay</string>
 </resources>