Add controller for action panel, add animated show/hide for panel

app/src/main/java/com/polar/mirror/ActionPanelController.java

@@ -0,0 +1,112 @@
+package com.polar.mirror;
+
+import android.content.Context;
+import android.view.View;
+import android.view.animation.Animation;
+import android.view.animation.AnimationUtils;
+import android.os.Handler;
+
+import androidx.annotation.NonNull;
+
+
+/**
+ * Controls panel with floating action buttons
+ */
+public class ActionPanelController implements View.OnClickListener {
+    private final View mPanelView;
+    private final View mOverlayView;
+    private final Animation mSlideDownAnimation;
+    private final Animation mSlideUpAnimation;
+    private boolean mPanelVisible = true;
+    private Handler mHideHandler;
+    private Runnable mHideRunnable;
+    private final int hideMs;
+    public ActionPanelController(Context context, View panelView, View overlayView){
+        mPanelView = panelView;
+        mOverlayView = overlayView;
+        mSlideDownAnimation = AnimationUtils.loadAnimation(context, R.anim.slide_down);
+        mSlideUpAnimation = AnimationUtils.loadAnimation(context, R.anim.slide_up);
+        hideMs = context.getResources().getInteger(R.integer.autohide_action_panel_ms);
+        if(hideMs < 0){
+            throw new RuntimeException("Bad configuration: negative hideMs");
+        }
+        setupAnimations();
+        setupAutoHide();
+    }
+
+    private void setupAutoHide(){
+        mHideHandler = new Handler();
+        mHideRunnable = this::hidePanel;
+        scheduleHide();
+    }
+
+    private void scheduleHide(){
+        mHideHandler.postDelayed(mHideRunnable, hideMs);
+    }
+
+    private void setupAnimations(){
+        mSlideDownAnimation.setAnimationListener(new Animation.AnimationListener() {
+            @Override
+            public void onAnimationStart(Animation animation) {
+                /*stub*/
+            }
+
+            @Override
+            public void onAnimationEnd(Animation animation) {
+                mPanelView.setVisibility(View.GONE);
+                mOverlayView.setVisibility(View.GONE);
+            }
+
+            @Override
+            public void onAnimationRepeat(Animation animation) {
+                /*stub*/
+            }
+        });
+        mSlideUpAnimation.setAnimationListener(new Animation.AnimationListener() {
+            @Override
+            public void onAnimationStart(Animation animation) {
+                mPanelView.setVisibility(View.VISIBLE);
+                mOverlayView.setVisibility(View.VISIBLE);
+            }
+
+            @Override
+            public void onAnimationEnd(Animation animation) {
+                /*stub*/
+            }
+
+            @Override
+            public void onAnimationRepeat(Animation animation) {
+                /*stub*/
+            }
+        });
+    }
+
+    private void hidePanel(){
+        mPanelView.startAnimation(mSlideDownAnimation);
+        mOverlayView.startAnimation(mSlideDownAnimation);
+        mPanelVisible = false;
+        mHideHandler.removeCallbacks(mHideRunnable);
+    }
+
+    private void showPanel(){
+        mPanelView.startAnimation(mSlideUpAnimation);
+        mOverlayView.startAnimation(mSlideUpAnimation);
+        mPanelVisible = true;
+        scheduleHide();
+    }
+
+    private void togglePanelVisibility(){
+        if(mPanelVisible){
+            hidePanel();
+        } else {
+            showPanel();
+        }
+    }
+    @Override
+    public void onClick(@NonNull View v) {
+        final int viewId = v.getId();
+        if(viewId == R.id.preview_view || viewId == R.id.stop_view){
+            togglePanelVisibility();
+        }
+    }
+}

app/src/main/java/com/polar/mirror/MainActivity.java

@@ -21,17 +21,21 @@
 public class MainActivity extends AppCompatActivity implements View.OnClickListener {
     private PreviewView mCameraView;
     private FreezeController mFreezeController;
+    private ActionPanelController mActionPanelController;
     private final static String TAG = "MainActivity";
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        setupView();
-
+        View panelView = findViewById(R.id.action_panel_layout);
+        View overlayView = findViewById(R.id.overlay_view);
+        mActionPanelController = new ActionPanelController(this, panelView, overlayView);
         mCameraView = findViewById(R.id.preview_view);
 
+        setupView();
+
         //Initialize freeze controller
         FloatingActionButton freezeButton = findViewById(R.id.freeze_button);
         ImageView freezeView = findViewById(R.id.stop_view);
@@ -44,6 +48,8 @@ protected void onCreate(Bundle savedInstanceState) {
         } catch (ExecutionException | InterruptedException e) {
             e.printStackTrace();
         }
+
+
     }
 
     @Override
@@ -65,6 +71,19 @@ private void setupView(){
         }
         setupFloatingButtons();
         hideSystemUi();
+        setupPanel();
+    }
+
+    /**
+     * Setups logic of action panel in a general
+     */
+    private void setupPanel(){
+        //Setup action panel
+        View stopView = findViewById(R.id.stop_view);
+        mCameraView.setClickable(true);
+        mCameraView.setOnClickListener(mActionPanelController);
+        stopView.setClickable(true);
+        stopView.setOnClickListener(mActionPanelController);
     }
 
     /**

app/src/main/res/anim/slide_down.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <translate
+        android:duration="300"
+        android:fromYDelta="0%"
+        android:toYDelta="100%" />
+</set>

app/src/main/res/anim/slide_up.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <translate
+        android:duration="300"
+        android:fromYDelta="100%"
+        android:toYDelta="0%" />
+</set>

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

@@ -21,6 +21,7 @@
         android:contentDescription="@string/stop_view_desc" />
 
     <View
+        android:id="@+id/overlay_view"
         android:layout_width="match_parent"
         android:layout_height="256dp"
         android:layout_gravity="bottom"

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

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!--After how many milliseconds we should hide action panel-->
+    <integer name="autohide_action_panel_ms">15000</integer>
+</resources>