session-android/app/src/main/res/layout/document_view.xml

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:tools="http://schemas.android.com/tools"
       xmlns:app="http://schemas.android.com/apk/res-auto"
       tools:context="org.thoughtcrime.securesms.components.DocumentView">

        <LinearLayout android:id="@+id/document_container"
                      android:layout_width="fill_parent"
                      android:layout_height="wrap_content"
                      android:clickable="false"
                      android:focusable="false"
                      android:gravity="center_vertical"
                      android:orientation="horizontal">

            <org.thoughtcrime.securesms.components.AnimatingToggle
                    android:id="@+id/control_toggle"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:clickable="false"
                    android:focusable="false"
                    android:gravity="center">

                <com.pnikosis.materialishprogress.ProgressWheel
                        android:id="@+id/download_progress"
                        android:layout_width="48dp"
                        android:layout_height="48dp"
                        android:visibility="gone"
                        android:clickable="false"
                        android:layout_gravity="center"
                        app:matProg_barColor="?android:textColorPrimary"
                        app:matProg_linearProgress="true"
                        app:matProg_spinSpeed="0.333"
                        tools:visibility="gone"/>

                <FrameLayout
                        android:id="@+id/icon_container"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center_vertical"
                        android:layout_marginStart="-4dp"
                        android:gravity="center"
                        android:visibility="visible"
                        android:clickable="false"
                        android:focusable="false"
                        tools:visibility="visible">

                    <ImageView
                        android:id="@+id/icon"
                        android:layout_width="38dp"
                        android:layout_height="50dp"
                        android:src="?attachment_document_icon_large"/>

                    <TextView android:id="@+id/document"
                              android:layout_width="wrap_content"
                              android:layout_height="wrap_content"
                              android:layout_gravity="center"
                              android:gravity="center"
                              android:clickable="false"
                              android:visibility="visible"
                              android:textAlignment="center"
                              android:scaleType="centerInside"
                              style="@style/Signal.Text.Caption"
                              android:textAllCaps="true"
                              android:textSize="10sp"
                              android:textColor="?attachment_document_extension_text_color"
                              tools:visibility="visible"
                              tools:text="PDF" />

                </FrameLayout>

                <ImageView android:id="@+id/download"
                           android:layout_width="wrap_content"
                           android:layout_height="wrap_content"
                           android:layout_gravity="center_vertical"
                           android:clickable="true"
                           android:visibility="gone"
                           android:background="@drawable/circle_touch_highlight_background"
                           android:src="@drawable/ic_download_circle_filled_48"
                           android:contentDescription="@string/audio_view__download_accessibility_description"
                           tools:visibility="visible"/>

            </org.thoughtcrime.securesms.components.AnimatingToggle>

            <LinearLayout android:layout_width="match_parent"
                          android:layout_height="wrap_content"
                          android:layout_marginStart="6dp"
                          android:orientation="vertical"
                          android:focusable="false"
                          android:clickable="false">

                <TextView android:id="@+id/file_name"
                          android:layout_width="match_parent"
                          android:layout_height="wrap_content"
                          style="@style/Signal.Text.Body"
                          android:textSize="@dimen/medium_font_size"
                          android:singleLine="true"
                          android:maxLines="1"
                          android:clickable="false"
                          android:ellipsize="end"
                          tools:text="The-Anarchist-Tension-by-Alfredo-Bonanno.pdf"/>

                <TextView android:id="@+id/file_size"
                          android:layout_width="wrap_content"
                          android:layout_height="wrap_content"
                          style="@style/Signal.Text.Caption"
                          android:clickable="false"
                          tools:text="24kb"/>
            </LinearLayout>
        </LinearLayout>
</merge>