implement the actual brightness display

app/src/main/AndroidManifest.xml

@@ -37,6 +37,10 @@
             android:label="@string/third_party_licences"
             android:parentActivityName=".activities.AboutActivity"/>
 
+        <activity
+            android:name=".activities.BrightDisplayActivity"
+            android:screenOrientation="portrait"/>
+
         <activity
             android:name=".activities.SettingsActivity"
             android:label="@string/settings"

app/src/main/java/com/simplemobiletools/flashlight/activities/BrightDisplayActivity.java

@@ -0,0 +1,38 @@
+package com.simplemobiletools.flashlight.activities;
+
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.view.WindowManager;
+
+import com.simplemobiletools.flashlight.R;
+
+public class BrightDisplayActivity extends SimpleActivity {
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_bright_display);
+
+        if (getSupportActionBar() != null)
+            getSupportActionBar().hide();
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+        toggleBrightness(true);
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+        toggleBrightness(false);
+    }
+
+    private void toggleBrightness(boolean increase) {
+        final WindowManager.LayoutParams layout = getWindow().getAttributes();
+        layout.screenBrightness = (increase ? 1 : 0);
+        getWindow().setAttributes(layout);
+    }
+}

app/src/main/java/com/simplemobiletools/flashlight/activities/MainActivity.java

@@ -5,6 +5,7 @@ import android.graphics.PorterDuff;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.view.View;
 import android.view.WindowManager;
 import android.widget.ImageView;
 
@@ -23,6 +24,7 @@ import butterknife.OnClick;
 
 public class MainActivity extends SimpleActivity {
     @BindView(R.id.toggle_btn) ImageView mToggleBtn;
+    @BindView(R.id.bright_display_btn) ImageView mBrightDisplayBtn;
 
     private static Bus mBus;
     private static MyCameraImpl mCameraImpl;
@@ -34,6 +36,7 @@ public class MainActivity extends SimpleActivity {
         ButterKnife.bind(this);
 
         mBus = BusProvider.getInstance();
+        changeIconColor(R.color.translucent_white, mBrightDisplayBtn);
     }
 
     @Override
@@ -66,6 +69,11 @@ public class MainActivity extends SimpleActivity {
         mCameraImpl.toggleFlashlight();
     }
 
+    @OnClick(R.id.bright_display_btn)
+    public void launchBrightDisplay() {
+        startActivity(new Intent(getApplicationContext(), BrightDisplayActivity.class));
+    }
+
     @Override
     protected void onStart() {
         super.onStart();
@@ -81,6 +89,11 @@ public class MainActivity extends SimpleActivity {
         super.onResume();
         mCameraImpl.handleCameraSetup();
         mCameraImpl.checkFlashlight();
+
+        if (mConfig.getBrightDisplay())
+            mBrightDisplayBtn.setVisibility(View.VISIBLE);
+        else
+            mBrightDisplayBtn.setVisibility(View.GONE);
     }
 
     @Override
@@ -109,18 +122,18 @@ public class MainActivity extends SimpleActivity {
     }
 
     public void enableFlashlight() {
-        changeIconColor(R.color.colorPrimary);
+        changeIconColor(R.color.colorPrimary, mToggleBtn);
         getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
     }
 
     public void disableFlashlight() {
-        changeIconColor(R.color.translucent_white);
+        changeIconColor(R.color.translucent_white, mToggleBtn);
         getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
     }
 
-    private void changeIconColor(int colorId) {
+    private void changeIconColor(int colorId, ImageView imageView) {
         final int appColor = getResources().getColor(colorId);
-        mToggleBtn.getDrawable().mutate().setColorFilter(appColor, PorterDuff.Mode.SRC_IN);
+        imageView.getDrawable().mutate().setColorFilter(appColor, PorterDuff.Mode.SRC_IN);
     }
 
     @Subscribe

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

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout
+    android:id="@+id/display_holder"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@android:color/white"/>

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

@@ -1,10 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout
+<LinearLayout
+    android:id="@+id/main_holder"
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="@android:color/black"
     android:gravity="center"
+    android:orientation="vertical"
     android:padding="@dimen/activity_margin">
 
     <ImageView
@@ -12,4 +14,15 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:src="@mipmap/flashlight_big"/>
-</RelativeLayout>
+
+    <ImageButton
+        android:id="@+id/bright_display_btn"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/bright_display_margin"
+        android:background="@android:color/transparent"
+        android:padding="@dimen/activity_margin"
+        android:src="@mipmap/bright_display"
+        android:visibility="gone"/>
+
+</LinearLayout>

app/src/main/res/values/dimens.xml

@@ -1,5 +1,6 @@
 <resources>
     <dimen name="activity_margin">16dp</dimen>
+    <dimen name="bright_display_margin">40dp</dimen>
     <dimen name="social_padding">8dp</dimen>
     <dimen name="social_logo">40dp</dimen>
     <dimen name="settings_padding">8dp</dimen>