pos/pos_journal_image/static/src/xml/pos_journal_image.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright (C) 2019-Today GRAP (http://www.grap.coop)
@author: Sylvain LE GAL (https://twitter.com/legalsylvain)
License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
-->
<templates id="template" xml:space="preserve">

    <t t-extend="PaypadButtonWidget">
        <t t-jquery="[t-esc='widget.cashregister.journal.name']" t-operation="before">
            <t t-if="widget.cashregister.journal.pos_image">
                <div class="cashregister-img">
                    <img t-att-src="widget.journal_icon_url(widget.cashregister.journal.id)"/>
                </div>
            </t>
        </t>
    </t>

    <t t-extend="Paymentline">
        <t t-jquery="[class='paymentline-name']" t-operation="before">
            <div class="paymentline-img">
                <img t-att-src="widget.journal_icon_url(line.cashregister.journal.id)"/>

            </div>
        </t>
    </t>

</templates>