qml: add NavigationBar2

src/Makefile.qt.include

@@ -367,6 +367,7 @@ QML_RES_QML = \
   qml/controls/NavButton.qml \
   qml/controls/PageIndicator.qml \
   qml/controls/NavigationBar.qml \
+  qml/controls/NavigationBar2.qml \
   qml/controls/OptionButton.qml \
   qml/controls/OptionSwitch.qml \
   qml/controls/OutlineButton.qml \

src/qml/bitcoin_qml.qrc

@@ -28,6 +28,7 @@
         <file>controls/NavButton.qml</file>
         <file>controls/PageIndicator.qml</file>
         <file>controls/NavigationBar.qml</file>
+        <file>controls/NavigationBar2.qml</file>
         <file>controls/OptionButton.qml</file>
         <file>controls/OptionSwitch.qml</file>
         <file>controls/OutlineButton.qml</file>

src/qml/controls/NavigationBar2.qml

@@ -0,0 +1,64 @@
+// Copyright (c) 2023 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+import QtQuick 2.15
+import QtQuick.Controls 2.15
+import QtQuick.Layouts 1.15
+
+Pane {
+    property alias leftItem: left_section.contentItem
+    property alias centerItem: center_section.contentItem
+    property alias rightItem: right_section.contentItem
+
+    background: null
+    padding: 4
+    contentItem: RowLayout {
+        Div {
+            id: left_div
+            Layout.preferredWidth: Math.floor(Math.max(left_div.implicitWidth, right_div.implicitWidth))
+            contentItem: RowLayout {
+                Section {
+                    id: left_section
+                }
+                Spacer {
+                }
+            }
+        }
+        Section {
+            id: center_section
+        }
+        Div {
+            id: right_div
+            Layout.preferredWidth: Math.floor(Math.max(left_div.implicitWidth, right_div.implicitWidth))
+            contentItem: RowLayout {
+                Spacer {
+                }
+                Section {
+                    id: right_section
+                }
+            }
+        }
+    }
+
+    component Div: Pane {
+        Layout.alignment: Qt.AlignCenter
+        Layout.fillWidth: true
+        Layout.minimumWidth: implicitWidth
+        background: null
+        padding: 0
+    }
+
+    component Section: Pane {
+        Layout.alignment: Qt.AlignCenter
+        Layout.minimumWidth: implicitWidth
+        background: null
+        padding: 0
+    }
+
+    component Spacer: Item {
+        Layout.alignment: Qt.AlignCenter
+        Layout.fillWidth: true
+        height: 1
+    }
+}