[libadwaita] demo: Demo AdwCarousel:allow-scroll-wheel

[Alexander Mikhaylenko <alexm src gnome org>]

commit cb93f407bcaac798cfefac0d9c3627e974329a7e
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Thu Apr 29 07:29:57 2021 +0200

    demo: Demo AdwCarousel:allow-scroll-wheel

 examples/adw-demo-window.ui | 13 +++++++++++++
 1 file changed, 13 insertions(+)
---
diff --git a/examples/adw-demo-window.ui b/examples/adw-demo-window.ui
index b629d97..1a673ac 100644
--- a/examples/adw-demo-window.ui
+++ b/examples/adw-demo-window.ui
@@ -598,6 +598,7 @@
                           <object class="AdwCarousel" id="carousel">
                             <property name="vexpand">True</property>
                             <property name="hexpand">True</property>
+                            <property name="allow-scroll-wheel" bind-source="carousel_scroll_wheel" 
bind-property="active" bind-flags="sync-create|bidirectional"/>
                             <property name="allow-long-swipes" bind-source="carousel_long_swipes" 
bind-property="active" bind-flags="sync-create|bidirectional"/>
                             <child>
                               <object class="AdwStatusPage">
@@ -651,6 +652,18 @@
                                         </property>
                                       </object>
                                     </child>
+                                    <child>
+                                      <object class="AdwActionRow">
+                                        <property name="title" translatable="yes">Scroll wheel</property>
+                                        <property name="activatable_widget">carousel_scroll_wheel</property>
+                                        <child>
+                                          <object class="GtkSwitch" id="carousel_scroll_wheel">
+                                            <property name="valign">center</property>
+                                            <property name="active">True</property>
+                                          </object>
+                                        </child>
+                                      </object>
+                                    </child>
                                     <child>
                                       <object class="AdwActionRow">
                                         <property name="title" translatable="yes">Long swipes</property>