Signal-Android/app/src/main/res/layout/custom_chat_color_creator_fragment_page.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:viewBindingIgnore="true"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/scroll_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fillViewport="true">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <com.google.android.material.card.MaterialCardView
            android:id="@+id/preview_card"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="16dp"
            android:layout_marginTop="16dp"
            android:layout_marginRight="16dp"
            app:cardCornerRadius="4dp"
            app:cardElevation="0dp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent">

            <org.thoughtcrime.securesms.conversation.colors.ui.ChatColorPreviewView
                android:id="@+id/chat_color_preview"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:ccpv_chat_bubble_count="4" />
        </com.google.android.material.card.MaterialCardView>

        <org.thoughtcrime.securesms.conversation.colors.ui.custom.CustomChatColorGradientToolView
            android:id="@+id/gradient_tool"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_margin="10dp"
            app:layout_constraintBottom_toTopOf="@id/hue_label"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:id="@+id/hue_label"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp"
            android:gravity="center_vertical"
            android:minHeight="40dp"
            android:paddingStart="16dp"
            android:paddingEnd="16dp"
            android:text="@string/CustomChatColorCreatorFragment__hue"
            android:textAppearance="@style/TextAppearance.Signal.Body2.Bold"
            android:textColor="@color/signal_text_secondary"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/preview_card" />

        <androidx.appcompat.widget.AppCompatSeekBar
            android:id="@+id/hue_slider"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:splitTrack="false"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/hue_label" />

        <TextView
            android:id="@+id/saturation_label"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center_vertical"
            android:minHeight="40dp"
            android:paddingStart="16dp"
            android:paddingEnd="16dp"
            android:text="@string/CustomChatColorCreatorFragment__saturation"
            android:textAppearance="@style/TextAppearance.Signal.Body2.Bold"
            android:textColor="@color/signal_text_secondary"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/hue_slider" />

        <androidx.appcompat.widget.AppCompatSeekBar
            android:id="@+id/saturation_slider"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:splitTrack="false"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/saturation_label" />

        <com.google.android.material.button.MaterialButton
            android:id="@+id/save"
            style="@style/Signal.Widget.Button.Large.Primary"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="16dp"
            android:layout_marginBottom="16dp"
            android:elevation="8dp"
            android:text="@string/CustomChatColorCreatorFragmentPage__save"
            app:cornerRadius="68dp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toBottomOf="@id/saturation_slider"
            app:layout_constraintVertical_bias="1" />

    </androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>