Camera content descriptions and allow camera capture in talk back.

res/layout/camera_controls_landscape.xml

@@ -6,12 +6,13 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <Button
+    <org.thoughtcrime.securesms.mediasend.CameraButtonView
         android:id="@+id/camera_capture_button"
         android:layout_width="80dp"
         android:layout_height="80dp"
         android:layout_marginEnd="24dp"
         android:background="@drawable/ic_camera_shutter"
+        android:contentDescription="@string/CameraXFragment_capture_description"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintBottom_toBottomOf="parent"/>
@@ -25,6 +26,7 @@
         android:src="@drawable/ic_switch_camera_32"
         android:scaleType="fitCenter"
         android:background="?selectableItemBackgroundBorderless"
+        android:contentDescription="@string/CameraXFragment_change_camera_description"
         android:visibility="gone"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
@@ -35,6 +37,7 @@
         android:layout_width="36dp"
         android:layout_height="36dp"
         android:layout_marginBottom="42dp"
+        android:contentDescription="@string/CameraXFragment_open_gallery_description"
         android:scaleType="centerCrop"
         app:layout_constraintBottom_toTopOf="@id/camera_capture_button"
         app:layout_constraintStart_toStartOf="@id/camera_capture_button"

res/layout/camera_controls_portrait.xml

@@ -6,12 +6,13 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <Button
+    <org.thoughtcrime.securesms.mediasend.CameraButtonView
         android:id="@+id/camera_capture_button"
         android:layout_width="80dp"
         android:layout_height="80dp"
         android:layout_marginBottom="24dp"
         android:background="@drawable/ic_camera_shutter"
+        android:contentDescription="@string/CameraXFragment_capture_description"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent" />
@@ -25,6 +26,7 @@
         android:src="@drawable/ic_switch_camera_32"
         android:scaleType="fitCenter"
         android:background="?selectableItemBackgroundBorderless"
+        android:contentDescription="@string/CameraXFragment_change_camera_description"
         android:visibility="gone"
         app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
@@ -35,6 +37,7 @@
         android:layout_width="36dp"
         android:layout_height="36dp"
         android:layout_marginStart="32dp"
+        android:contentDescription="@string/CameraXFragment_open_gallery_description"
         android:scaleType="centerCrop"
         app:layout_constraintTop_toTopOf="@id/camera_capture_button"
         app:layout_constraintBottom_toBottomOf="@id/camera_capture_button"

res/layout/conversation_list_fragment.xml

@@ -75,6 +75,7 @@
         android:layout_gravity="bottom|end"
         android:layout_marginEnd="16dp"
         android:layout_marginBottom="88dp"
+        android:contentDescription="@string/conversation_list_fragment__open_camera_description"
         android:src="@drawable/ic_camera_filled_24"
         android:tint="?conversation_list_camera_icon_tint"
         android:focusable="true"

res/layout/mediasend_activity.xml

@@ -142,6 +142,7 @@
                     android:layout_gravity="bottom|end"
                     android:padding="6dp"
                     android:background="@drawable/media_continue_button_background"
+                    android:contentDescription="@string/MediaSendActivity_select_recipients_description"
                     android:visibility="gone"
                     app:srcCompat="@drawable/ic_continue_24"
                     tools:visibility="visible"/>

res/menu/camera_contacts.xml

@@ -4,7 +4,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto">
 
     <item
-        android:title=""
+        android:title="@string/CameraContacts__menu_search"
         android:id="@+id/menu_search"
         android:icon="@drawable/ic_search_white_24dp"
         app:actionViewClass="androidx.appcompat.widget.SearchView"

res/menu/mediapicker_default.xml

@@ -4,7 +4,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto">
 
     <item
-        android:title=""
+        android:title="@string/MediaPickerActivity__menu_open_camera"
         android:id="@+id/mediapicker_menu_camera"
         android:visible="true"
         android:icon="@drawable/ic_camera_alt_white_24dp"

res/values/strings.xml

@@ -92,6 +92,11 @@
     <!-- CameraActivity -->
     <string name="CameraActivity_image_save_failure">Failed to save image.</string>
 
+    <!-- CameraXFragment -->
+    <string name="CameraXFragment_capture_description">Capture</string>
+    <string name="CameraXFragment_change_camera_description">Change camera</string>
+    <string name="CameraXFragment_open_gallery_description">Open gallery</string>
+
     <!-- CameraContacts -->
     <string name="CameraContacts_recent_contacts">Recent contacts</string>
     <string name="CameraContacts_signal_contacts">Signal contacts</string>
@@ -102,6 +107,7 @@
     <string name="CameraContacts_you_can_only_use_the_camera_button">You can only use the camera button to send photos to Signal contacts. </string>
     <string name="CameraContacts_cant_find_who_youre_looking_for">Can\'t find who you\'re looking for?</string>
     <string name="CameraContacts_invite_a_contact_to_join_signal">Invite a contact to join Signal</string>
+    <string name="CameraContacts__menu_search">Search</string>
 
     <!-- ClearProfileActivity -->
     <string name="ClearProfileActivity_remove">Remove</string>
@@ -484,6 +490,7 @@
 
     <!-- MediaPickerActivity -->
     <string name="MediaPickerActivity_send_to">Send to %s</string>
+    <string name="MediaPickerActivity__menu_open_camera">Open camera</string>
 
     <!-- MediaPickerItemFragment -->
     <string name="MediaPickerItemFragment_tap_to_select">Tap to select</string>
@@ -501,6 +508,7 @@
         <item quantity="one">You can\'t share more than %d item.</item>
         <item quantity="other">You can\'t share more than %d items.</item>
     </plurals>
+    <string name="MediaSendActivity_select_recipients_description">Select recipients</string>
 
     <!-- MediaRepository -->
     <string name="MediaRepository_all_media">All media</string>
@@ -1423,6 +1431,7 @@
 
     <!-- conversation_list_fragment -->
     <string name="conversation_list_fragment__fab_content_description">New conversation</string>
+    <string name="conversation_list_fragment__open_camera_description">Open Camera</string>
     <string name="conversation_list_fragment__give_your_inbox_something_to_write_home_about_get_started_by_messaging_a_friend">Give your inbox something to write home about. Get started by messaging a friend.</string>
 
 

src/org/thoughtcrime/securesms/mediasend/Camera1Fragment.java

@@ -1,7 +1,6 @@
 package org.thoughtcrime.securesms.mediasend;
 
 import android.annotation.SuppressLint;
-import androidx.lifecycle.ViewModelProviders;
 import android.content.res.Configuration;
 import android.graphics.Bitmap;
 import android.graphics.Matrix;
@@ -10,9 +9,6 @@ import android.graphics.PointF;
 import android.graphics.SurfaceTexture;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.fragment.app.Fragment;
 import android.view.Display;
 import android.view.GestureDetector;
 import android.view.LayoutInflater;
@@ -22,14 +18,17 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.view.WindowManager;
 import android.view.animation.Animation;
-import android.view.animation.AnimationUtils;
 import android.view.animation.DecelerateInterpolator;
 import android.view.animation.RotateAnimation;
-import android.widget.Button;
 import android.widget.ImageButton;
 import android.widget.ImageView;
 import android.widget.TextView;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProviders;
+
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.load.MultiTransformation;
 import com.bumptech.glide.load.Transformation;
@@ -61,7 +60,7 @@ public class Camera1Fragment extends Fragment implements CameraFragment,
   private TextureView                  cameraPreview;
   private ViewGroup                    controlsContainer;
   private ImageButton                  flipButton;
-  private Button                       captureButton;
+  private View                         captureButton;
   private Camera1Controller            camera;
   private Controller                   controller;
   private OrderEnforcer<Stage>         orderEnforcer;
@@ -218,7 +217,6 @@ public class Camera1Fragment extends Fragment implements CameraFragment,
     }
   }
 
-  @SuppressLint("ClickableViewAccessibility")
   private void initControls() {
     flipButton    = requireView().findViewById(R.id.camera_flip_button);
     captureButton = requireView().findViewById(R.id.camera_capture_button);
@@ -226,26 +224,9 @@ public class Camera1Fragment extends Fragment implements CameraFragment,
     View galleryButton = requireView().findViewById(R.id.camera_gallery_button);
     View countButton   = requireView().findViewById(R.id.camera_count_button);
 
-    captureButton.setOnTouchListener((v, event) -> {
+    captureButton.setOnClickListener(v -> {
-      switch (event.getAction()) {
+      captureButton.setEnabled(false);
-        case MotionEvent.ACTION_DOWN:
+      onCaptureClicked();
-          Animation shrinkAnimation = AnimationUtils.loadAnimation(getContext(), R.anim.camera_capture_button_shrink);
-          shrinkAnimation.setFillAfter(true);
-          shrinkAnimation.setFillEnabled(true);
-          captureButton.startAnimation(shrinkAnimation);
-          onCaptureClicked();
-          break;
-        case MotionEvent.ACTION_UP:
-        case MotionEvent.ACTION_CANCEL:
-        case MotionEvent.ACTION_OUTSIDE:
-          Animation growAnimation = AnimationUtils.loadAnimation(getContext(), R.anim.camera_capture_button_grow);
-          growAnimation.setFillAfter(true);
-          growAnimation.setFillEnabled(true);
-          captureButton.startAnimation(growAnimation);
-          captureButton.setEnabled(false);
-          break;
-      }
-      return true;
     });
 
     orderEnforcer.run(Stage.CAMERA_PROPERTIES_AVAILABLE, () -> {

src/org/thoughtcrime/securesms/mediasend/CameraButtonView.java

@@ -0,0 +1,64 @@
+package org.thoughtcrime.securesms.mediasend;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.animation.Animation;
+import android.view.animation.AnimationUtils;
+
+import androidx.appcompat.widget.AppCompatButton;
+
+import org.thoughtcrime.securesms.R;
+
+public final class CameraButtonView extends AppCompatButton {
+
+  private Animation shrinkAnimation;
+  private Animation growAnimation;
+
+  public CameraButtonView(Context context) {
+    super(context);
+    init(context);
+  }
+
+  public CameraButtonView(Context context, AttributeSet attrs) {
+    super(context, attrs);
+    init(context);
+  }
+
+  public CameraButtonView(Context context, AttributeSet attrs, int defStyleAttr) {
+    super(context, attrs, defStyleAttr);
+    init(context);
+  }
+
+  public void init(Context context) {
+    shrinkAnimation = AnimationUtils.loadAnimation(context, R.anim.camera_capture_button_shrink);
+    growAnimation   = AnimationUtils.loadAnimation(context, R.anim.camera_capture_button_grow);
+
+    shrinkAnimation.setFillAfter(true);
+    shrinkAnimation.setFillEnabled(true);
+
+    growAnimation.setFillAfter(true);
+    growAnimation.setFillEnabled(true);
+  }
+
+  @Override
+  public boolean onTouchEvent(MotionEvent event) {
+    switch (event.getAction()) {
+      case MotionEvent.ACTION_DOWN:
+        if (isEnabled()) {
+          startAnimation(shrinkAnimation);
+          performClick();
+        }
+        return true;
+      case MotionEvent.ACTION_UP:
+        startAnimation(growAnimation);
+        return true;
+    }
+    return false;
+  }
+
+  @Override
+  public boolean performClick() {
+    return super.performClick();
+  }
+}

src/org/thoughtcrime/securesms/mediasend/CameraXFragment.java

@@ -11,7 +11,6 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.view.WindowManager;
 import android.view.animation.Animation;
-import android.view.animation.AnimationUtils;
 import android.view.animation.DecelerateInterpolator;
 import android.view.animation.RotateAnimation;
 import android.widget.ImageView;
@@ -166,26 +165,10 @@ public class CameraXFragment extends Fragment implements CameraFragment {
     View galleryButton = requireView().findViewById(R.id.camera_gallery_button);
     View countButton   = requireView().findViewById(R.id.camera_count_button);
 
-    captureButton.setOnTouchListener((v, event) -> {
+    captureButton.setOnClickListener(v -> {
-      switch (event.getAction()) {
+      captureButton.setEnabled(false);
-        case MotionEvent.ACTION_DOWN:
+      flipButton.setEnabled(false);
-          Animation shrinkAnimation = AnimationUtils.loadAnimation(getContext(), R.anim.camera_capture_button_shrink);
+      onCaptureClicked();
-          shrinkAnimation.setFillAfter(true);
-          shrinkAnimation.setFillEnabled(true);
-          captureButton.startAnimation(shrinkAnimation);
-          onCaptureClicked();
-          break;
-        case MotionEvent.ACTION_UP:
-        case MotionEvent.ACTION_CANCEL:
-        case MotionEvent.ACTION_OUTSIDE:
-          Animation growAnimation = AnimationUtils.loadAnimation(getContext(), R.anim.camera_capture_button_grow);
-          growAnimation.setFillAfter(true);
-          growAnimation.setFillEnabled(true);
-          captureButton.startAnimation(growAnimation);
-          captureButton.setEnabled(false);
-          break;
-      }
-      return true;
     });
 
     if (camera.hasCameraWithLensFacing(CameraX.LensFacing.FRONT) && camera.hasCameraWithLensFacing(CameraX.LensFacing.BACK)) {
@@ -203,14 +186,15 @@ public class CameraXFragment extends Fragment implements CameraFragment {
       GestureDetector gestureDetector = new GestureDetector(requireContext(), new GestureDetector.SimpleOnGestureListener() {
         @Override
         public boolean onDoubleTap(MotionEvent e) {
-          flipButton.performClick();
+          if (flipButton.isEnabled()) {
+            flipButton.performClick();
+          }
           return true;
         }
       });
 
       camera.setOnTouchListener((v, event) -> gestureDetector.onTouchEvent(event));
 
-
     } else {
       flipButton.setVisibility(View.GONE);
     }