fedilab-Android-App/app/src/main/res/layout/activity_photoeditor.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
    Copyright 2019 Thomas Schneider

    This file is a part of Fedilab

    This program is free software; you can redistribute it and/or modify it under the terms of the
    GNU General Public License as published by the Free Software Foundation; either version 3 of the
    License, or (at your option) any later version.

    Fedilab is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
    the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
    Public License for more details.

    You should have received a copy of the GNU General Public License along with Fedilab; if not,
    see <http://www.gnu.org/licenses>.
-->

<android.support.constraint.ConstraintLayout xmlns:tools="http://schemas.android.com/tools"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/rootView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/black"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">


    <android.support.constraint.Guideline
        android:id="@+id/guideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_end="?attr/actionBarSize" />

    <ja.burhanrashid52.photoeditor.PhotoEditorView
        android:id="@+id/photoEditorView"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toTopOf="@+id/rvConstraintTools"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        />

    <ImageView
        android:id="@+id/imgUndo"
        android:layout_width="50dp"
        android:layout_height="wrap_content"
        android:padding="8dp"
        android:src="@drawable/ic_undo"
        app:layout_constraintBottom_toTopOf="@+id/rvConstraintTools"
        app:layout_constraintEnd_toStartOf="@+id/imgRedo"
        android:contentDescription="@string/undo" />

    <ImageView
        android:id="@+id/imgRedo"
        android:layout_width="50dp"
        android:layout_height="wrap_content"
        android:padding="8dp"
        android:src="@drawable/ic_redo"
        app:layout_constraintBottom_toTopOf="@+id/rvConstraintTools"
        app:layout_constraintEnd_toEndOf="parent"
        android:contentDescription="@string/redo" />

    <ImageView
        android:id="@+id/imgGallery"
        android:layout_width="50dp"
        android:layout_height="wrap_content"
        android:padding="8dp"
        android:src="@drawable/ic_gallery"
        app:layout_constraintBottom_toTopOf="@+id/rvConstraintTools"
        app:layout_constraintStart_toStartOf="parent"
        android:contentDescription="@string/gallery"/>

    <ImageView
        android:id="@+id/imgCamera"
        android:layout_width="50dp"
        android:layout_height="wrap_content"
        android:padding="8dp"
        android:src="@drawable/ic_camera"
        app:layout_constraintBottom_toTopOf="@+id/rvConstraintTools"
        app:layout_constraintStart_toEndOf="@id/imgGallery"
        android:contentDescription="@string/camera"
        />

    <ImageView
        android:id="@+id/imgClose"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_margin="8dp"
        android:src="@drawable/ic_close"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        android:contentDescription="@string/close"
        app:layout_constraintTop_toBottomOf="@+id/guideline" />

    <android.support.v7.widget.RecyclerView
        android:id="@+id/rvConstraintTools"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:paddingBottom="4dp"
        android:paddingTop="4dp"
        app:layoutManager="android.support.v7.widget.LinearLayoutManager"
        app:layout_constraintBottom_toTopOf="@+id/guideline"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        tools:listitem="@layout/row_editing_tools" />

    <android.support.v7.widget.RecyclerView
        android:id="@+id/rvFilterView"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:orientation="horizontal"
        app:layoutManager="android.support.v7.widget.LinearLayoutManager"
        app:layout_constraintBottom_toBottomOf="@+id/rvConstraintTools"
        app:layout_constraintStart_toEndOf="parent"
        app:layout_constraintTop_toTopOf="@+id/rvConstraintTools"
        tools:listitem="@layout/row_filter_view" />

    <TextView
        android:id="@+id/txtCurrentTool"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="8dp"
        android:layout_marginStart="8dp"
        android:singleLine="true"
        android:text="@string/app_name"
        android:textColor="@android:color/white"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/guideline" />

    <Button
        android:id="@+id/send"
        style="@style/Widget.AppCompat.Button.Colored"
        android:layout_width="wrap_content"
        android:layout_height="45dp"
        android:layout_gravity="end"
        android:gravity="center"
        android:padding="0dp"
        android:layout_margin="8dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/imgSave"
        app:layout_constraintTop_toBottomOf="@+id/guideline"
        android:text="@string/validate" />

    <ImageView
        android:id="@+id/imgSave"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:src="@drawable/ic_save_gallery"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        android:contentDescription="@string/save"
        app:layout_constraintTop_toBottomOf="@+id/guideline" />

</android.support.constraint.ConstraintLayout>