Add unread count to scroll to bottom button

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationActivityV2.kt

@@ -7,6 +7,7 @@ import android.database.Cursor
 import android.graphics.Rect
 import android.os.Bundle
 import android.util.Log
+import android.util.TypedValue
 import android.view.*
 import android.widget.RelativeLayout
 import androidx.loader.app.LoaderManager
@@ -30,6 +31,7 @@ import org.thoughtcrime.securesms.conversation.v2.input_bar.mentions.MentionCand
 import org.thoughtcrime.securesms.conversation.v2.menus.ConversationActionModeCallback
 import org.thoughtcrime.securesms.conversation.v2.menus.ConversationMenuHelper
 import org.thoughtcrime.securesms.conversation.v2.messages.VisibleMessageView
+import org.thoughtcrime.securesms.database.Database
 import org.thoughtcrime.securesms.database.DatabaseFactory
 import org.thoughtcrime.securesms.database.DraftDatabase
 import org.thoughtcrime.securesms.database.DraftDatabase.Drafts
@@ -100,6 +102,7 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity(), InputBarDe
         restoreDraftIfNeeded()
         addOpenGroupGuidelinesIfNeeded()
         scrollToBottomButton.setOnClickListener { conversationRecyclerView.smoothScrollToPosition(0) }
+        updateUnreadCount()
     }
 
     private fun setUpRecyclerView() {
@@ -319,6 +322,15 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity(), InputBarDe
             (scrollButtonFullVisibilityThreshold - scrollButtonNoVisibilityThreshold)
         val alpha = max(min(rawAlpha, 1.0f), 0.0f)
         scrollToBottomButton.alpha = alpha
+        updateUnreadCount()
+    }
+
+    private fun updateUnreadCount() {
+        val unreadCount = DatabaseFactory.getMmsSmsDatabase(this).getUnreadCount(threadID)
+        val formattedUnreadCount = if (unreadCount < 100) unreadCount.toString() else "99+"
+        unreadCountTextView.text = formattedUnreadCount
+        val textSize = if (unreadCount < 100) 12.0f else 9.0f
+        unreadCountTextView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, textSize)
     }
     // endregion
 

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationRecyclerView.kt

@@ -5,6 +5,7 @@ import android.util.AttributeSet
 import android.util.Log
 import android.view.MotionEvent
 import android.view.VelocityTracker
+import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import kotlinx.android.synthetic.main.activity_conversation_v2.*
 import org.thoughtcrime.securesms.loki.utilities.disableClipping
@@ -33,6 +34,8 @@ class ConversationRecyclerView : RecyclerView {
 
             override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
                 bottomOffset += dy // FIXME: Not sure this is fully accurate, but it seems close enough
+                val layoutManager = recyclerView.layoutManager as LinearLayoutManager
+                Log.d("Test", "${layoutManager.findFirstVisibleItemPosition()}")
                 delegate?.handleConversationRecyclerViewBottomOffsetChanged(abs(bottomOffset))
             }
         })

app/src/main/res/layout/activity_conversation_v2.xml

@@ -73,12 +73,18 @@
     <RelativeLayout
         android:id="@+id/scrollToBottomButton"
         android:layout_width="40dp"
-        android:layout_height="40dp"
+        android:layout_height="50dp"
         android:layout_alignParentRight="true"
         android:layout_alignParentBottom="true"
         android:layout_marginRight="12dp"
         android:layout_marginBottom="72dp"
-        android:alpha="0"
+        android:alpha="1">
+
+        <RelativeLayout
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:layout_centerHorizontal="true"
+            android:layout_alignParentBottom="true"
             android:background="@drawable/view_scroll_to_bottom_button_background">
 
             <ImageView
@@ -91,6 +97,27 @@
 
         </RelativeLayout>
 
+        <RelativeLayout
+            android:layout_width="20dp"
+            android:layout_height="20dp"
+            android:layout_centerHorizontal="true"
+            android:layout_alignParentTop="true"
+            android:background="@drawable/circle_tintable"
+            android:backgroundTint="@color/conversation_unread_count_indicator_background">
+
+            <TextView
+                android:id="@+id/unreadCountTextView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerInParent="true"
+                android:textSize="@dimen/very_small_font_size"
+                android:textColor="@color/text"
+                android:text="8" />
+
+        </RelativeLayout>
+
+    </RelativeLayout>
+
     <org.thoughtcrime.securesms.conversation.v2.input_bar.InputBarRecordingView
         android:id="@+id/inputBarRecordingView"
         android:layout_width="match_parent"

app/src/main/res/values-notnight-v21/colors.xml

@@ -31,6 +31,7 @@
     <color name="link_preview_background">#0F000000</color>
     <color name="scroll_to_bottom_button_background">#FCFCFC</color>
     <color name="scroll_to_bottom_button_border">#99000000</color>
+    <color name="conversation_unread_count_indicator_background">#E0E0E0</color>
 
     <color name="default_background_start">#ffffff</color>
     <color name="default_background_end">#fcfcfc</color>

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

@@ -38,6 +38,7 @@
     <color name="link_preview_background">#000000</color>
     <color name="scroll_to_bottom_button_background">#171717</color>
     <color name="scroll_to_bottom_button_border">#99FFFFFF</color>
+    <color name="conversation_unread_count_indicator_background">#1F1F1F</color>
 
     <array name="profile_picture_placeholder_colors">
         <item>#5ff8b0</item>