Adds an icon to video and gifv media previews to indicate they can be played. The icon is a circled triangle (play button). Closes #319

app/src/main/java/com/keylesspalace/tusky/adapter/StatusViewHolder.java

@@ -63,6 +63,7 @@ class StatusViewHolder extends RecyclerView.ViewHolder {
     private ImageView mediaPreview2;
     private ImageView mediaPreview3;
     private View sensitiveMediaWarning;
+    private View videoIndicator;
     private TextView mediaLabel;
     private View contentWarningBar;
     private TextView contentWarningDescription;
@@ -89,6 +90,7 @@ class StatusViewHolder extends RecyclerView.ViewHolder {
         mediaPreview2 = (ImageView) itemView.findViewById(R.id.status_media_preview_2);
         mediaPreview3 = (ImageView) itemView.findViewById(R.id.status_media_preview_3);
         sensitiveMediaWarning = itemView.findViewById(R.id.status_sensitive_media_warning);
+        videoIndicator = itemView.findViewById(R.id.status_video_indicator);
         mediaLabel = (TextView) itemView.findViewById(R.id.status_media_label);
         contentWarningBar = itemView.findViewById(R.id.status_content_warning_bar);
         contentWarningDescription =
@@ -228,11 +230,16 @@ class StatusViewHolder extends RecyclerView.ViewHolder {
                         .into(previews[i]);
             }
 
+            final Status.MediaAttachment.Type type = attachments[i].type;
+            if (type == Status.MediaAttachment.Type.VIDEO
+                    | type == Status.MediaAttachment.Type.GIFV) {
+                videoIndicator.setVisibility(View.VISIBLE);
+            }
+
             if (urls[i] == null || urls[i].isEmpty()) {
                 previews[i].setOnClickListener(null);
             } else {
                 final int urlIndex = i;
-                final Status.MediaAttachment.Type type = attachments[i].type;
                 previews[i].setOnClickListener(new View.OnClickListener() {
                     @Override
                     public void onClick(View v) {
@@ -444,6 +451,9 @@ class StatusViewHolder extends RecyclerView.ViewHolder {
             if (!sensitive || attachments.length == 0) {
                 hideSensitiveMediaWarning();
             }
+            if (attachments.length == 0) {
+                videoIndicator.setVisibility(View.GONE);
+            }
             // Hide the unused label.
             mediaLabel.setVisibility(View.GONE);
         } else {
@@ -454,6 +464,7 @@ class StatusViewHolder extends RecyclerView.ViewHolder {
             mediaPreview2.setVisibility(View.GONE);
             mediaPreview3.setVisibility(View.GONE);
             hideSensitiveMediaWarning();
+            videoIndicator.setVisibility(View.GONE);
         }
 
         setupButtons(listener, realStatus.account.id);

app/src/main/res/drawable/ic_play_48dp.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="48dp"
+    android:width="48dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path android:fillColor="#FFF" android:pathData="M12,20C7.59,20 4,16.41 4,12C4,7.59 7.59,4 12,4C16.41,4 20,7.59 20,12C20,16.41 16.41,20 12,20M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2M10,16.5L16,12L10,7.5V16.5Z" />
+</vector>

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

@@ -208,6 +208,22 @@
 
         </LinearLayout>
 
+        <RelativeLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+            <ImageView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:id="@+id/status_video_indicator"
+                app:srcCompat="@drawable/ic_play_48dp"
+                android:alpha="0.5"
+                android:layout_centerInParent="true"
+                android:contentDescription="@null"
+                android:visibility="gone" />
+
+        </RelativeLayout>
+
         <LinearLayout
             android:id="@+id/status_sensitive_media_warning"
             android:layout_width="match_parent"