Fix right-to-left language support for voice recording

Bug: fixes #5999

// FREEBIE

res/layout/conversation_input_panel.xml

@@ -110,6 +110,7 @@
                       android:layout_height="wrap_content"
                       android:ellipsize="none"
                       android:layout_marginLeft="20dp"
+                      android:layout_marginStart="20dp"
                       android:text="00:00"
                       android:textColor="#61737b"
                       android:textSize="20dp"
@@ -126,6 +127,7 @@
                           android:layout_height="match_parent"
                           android:gravity="center"
                           android:drawableLeft="@drawable/ic_keyboard_arrow_left_grey600_24dp"
+                          android:drawableStart="@drawable/ic_keyboard_arrow_left_grey600_24dp"
                           android:text="@string/conversation_input_panel__slide_to_cancel"
                           android:textAllCaps="true"
                           android:textColor="#61737b"
@@ -133,6 +135,7 @@
                           android:ellipsize="none"
                           android:singleLine="true"
                           android:paddingLeft="20dp"
+                          android:paddingStart="20dp"
                           android:visibility="gone"
                           tools:visibility="visible"/>
 

src/org/thoughtcrime/securesms/components/InputPanel.java

@@ -7,6 +7,7 @@ import android.os.Build;
 import android.os.Handler;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.v4.view.ViewCompat;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.view.KeyEvent;
@@ -21,7 +22,6 @@ import android.widget.Toast;
 
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.components.emoji.EmojiDrawer;
-import org.thoughtcrime.securesms.components.emoji.EmojiEditText;
 import org.thoughtcrime.securesms.components.emoji.EmojiToggle;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
 import org.thoughtcrime.securesms.util.ViewUtil;
@@ -146,7 +146,12 @@ public class InputPanel extends LinearLayout
   public void onRecordMoved(float x, float absoluteX) {
     slideToCancel.moveTo(x);
 
-    if (absoluteX / recordingContainer.getWidth() <= 0.5) {
+    int   direction = ViewCompat.getLayoutDirection(this);
+    float position  = absoluteX / recordingContainer.getWidth();
+
+    if (direction == ViewCompat.LAYOUT_DIRECTION_LTR && position <= 0.5 ||
+        direction == ViewCompat.LAYOUT_DIRECTION_RTL && position >= 0.6)
+    {
       this.microphoneRecorderView.cancelAction();
     }
   }
@@ -225,7 +230,7 @@ public class InputPanel extends LinearLayout
 
     public ListenableFuture<Void> hide(float x) {
       final SettableFuture<Void> future = new SettableFuture<>();
-      float offset = -Math.max(0, this.startPositionX - x);
+      float offset = getOffset(x);
 
       AnimationSet animation = new AnimationSet(true);
       animation.addAnimation(new TranslateAnimation(Animation.ABSOLUTE, offset,
@@ -255,7 +260,7 @@ public class InputPanel extends LinearLayout
     }
 
     public void moveTo(float x) {
-      float     offset    = -Math.max(0, this.startPositionX - x);
+      float     offset    = getOffset(x);
       Animation animation = new TranslateAnimation(Animation.ABSOLUTE, offset,
                                                    Animation.ABSOLUTE, offset,
                                                    Animation.RELATIVE_TO_SELF, 0,
@@ -268,6 +273,11 @@ public class InputPanel extends LinearLayout
       slideToCancelView.startAnimation(animation);
     }
 
+    private float getOffset(float x) {
+      return ViewCompat.getLayoutDirection(slideToCancelView) == ViewCompat.LAYOUT_DIRECTION_LTR ?
+          -Math.max(0, this.startPositionX - x) : Math.max(0, x - this.startPositionX);
+    }
+
   }
 
   private static class RecordTime implements Runnable {

src/org/thoughtcrime/securesms/components/MicrophoneRecorderView.java

@@ -3,6 +3,7 @@ package org.thoughtcrime.securesms.components;
 import android.content.Context;
 import android.graphics.PorterDuff;
 import android.support.annotation.Nullable;
+import android.support.v4.view.ViewCompat;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.view.View;
@@ -113,9 +114,12 @@ public class MicrophoneRecorderView extends FrameLayout implements View.OnTouchL
 
       recordButtonFab.setVisibility(View.VISIBLE);
 
+      float translation = ViewCompat.getLayoutDirection(recordButtonFab) ==
+          ViewCompat.LAYOUT_DIRECTION_LTR ? -.25f : .25f;
+
       AnimationSet animation = new AnimationSet(true);
-      animation.addAnimation(new TranslateAnimation(Animation.RELATIVE_TO_SELF, -.25f,
-                                                    Animation.RELATIVE_TO_SELF, -.25f,
+      animation.addAnimation(new TranslateAnimation(Animation.RELATIVE_TO_SELF, translation,
+                                                    Animation.RELATIVE_TO_SELF, translation,
                                                     Animation.RELATIVE_TO_SELF, -.25f,
                                                     Animation.RELATIVE_TO_SELF, -.25f));
 
@@ -134,8 +138,8 @@ public class MicrophoneRecorderView extends FrameLayout implements View.OnTouchL
     public void moveTo(float x) {
       this.lastPositionX = x;
 
-      float offset          = -Math.max(0, this.startPositionX - x);
-      int   widthAdjustment = -(recordButtonFab.getWidth() / 4);
+      float offset          = getOffset(x);
+      int   widthAdjustment = getWidthAdjustment();
 
       Animation translateAnimation = new TranslateAnimation(Animation.ABSOLUTE, widthAdjustment + offset,
                                                             Animation.ABSOLUTE, widthAdjustment + offset,
@@ -152,8 +156,8 @@ public class MicrophoneRecorderView extends FrameLayout implements View.OnTouchL
     public void hide(float x) {
       this.lastPositionX = x;
 
-      float offset          = -Math.max(0, this.startPositionX - x);
-      int   widthAdjustment = -(recordButtonFab.getWidth() / 4);
+      float offset          = getOffset(x);
+      int   widthAdjustment = getWidthAdjustment();
 
       AnimationSet animation = new AnimationSet(false);
       Animation scaleAnimation = new ScaleAnimation(1, 0.5f, 1, 0.5f,
@@ -179,6 +183,16 @@ public class MicrophoneRecorderView extends FrameLayout implements View.OnTouchL
       recordButtonFab.startAnimation(animation);
     }
 
+    private float getOffset(float x) {
+      return ViewCompat.getLayoutDirection(recordButtonFab) == ViewCompat.LAYOUT_DIRECTION_LTR ?
+          -Math.max(0, this.startPositionX - x) : Math.max(0, x - this.startPositionX);
+    }
+
+    private int getWidthAdjustment() {
+      int width = recordButtonFab.getWidth() / 4;
+      return ViewCompat.getLayoutDirection(recordButtonFab) == ViewCompat.LAYOUT_DIRECTION_LTR ? -width : width;
+    }
+
   }
 
 }