Add option to set an image as lockscreen background (#755)

Co-authored-by: PhonerApp <63700223+PhonerApp@users.noreply.github.com>

Author: jaigak

Files/Interacts/Interaction.cs

@@ -75,6 +75,22 @@ public async void SetAsDesktopBackgroundItem_Click(object sender, RoutedEventArg
             await profileSettings.TrySetWallpaperImageAsync(file);
         }
 
+        public async void SetAsLockscreenBackgroundItem_Click(object sender, RoutedEventArgs e)
+        {
+            // Get the path of the selected file
+            StorageFile sourceFile = await StorageFile.GetFileFromPathAsync((CurrentInstance.ContentPage as BaseLayout).SelectedItem.ItemPath);
+
+            // Get the app's local folder to use as the destination folder.
+            StorageFolder localFolder = ApplicationData.Current.LocalFolder;
+
+            // Copy the file to the destination folder.
+            // Replace the existing file if the file already exists.
+            StorageFile file = await sourceFile.CopyAsync(localFolder, "Background.png", NameCollisionOption.ReplaceExisting);
+
+            // Set the lockscreen background
+            await LockScreen.SetImageFileAsync(file);
+        }
+
         public void OpenNewTab()
         {
             instanceTabsView.AddNewTab(typeof(ModernShellPage), "New tab");

Files/Strings/en-US/Resources.resw

@@ -585,4 +585,7 @@
   <data name="ItemAlreadyExistsDialogTitle" xml:space="preserve">
     <value>Item already exists</value>
   </data>
+  <data name="BaseLayoutItemContextFlyoutSetAsLockscreenBackground" xml:space="preserve">
+    <value>Set as lockscreen background</value>
+  </data>
 </root>

Files/UserControls/LayoutModes/GenericFileBrowser.xaml

@@ -192,6 +192,16 @@
                     <FontIcon Glyph="&#xE7F4;" />
                 </MenuFlyoutItem.Icon>
             </MenuFlyoutItem>
+            <MenuFlyoutItem
+                x:Name="SetAsLockscreenBackgroundItem"
+                x:Uid="BaseLayoutItemContextFlyoutSetAsLockscreenBackground"
+                Click="{x:Bind local:App.CurrentInstance.InteractionOperations.SetAsLockscreenBackgroundItem_Click}"
+                Text="Set as lockscreen background"
+                Visibility="{x:Bind local:App.InteractionViewModel.IsSelectedItemImage, Mode=OneWay}">
+                <MenuFlyoutItem.Icon>
+                    <FontIcon Glyph="&#xEE3F;" />
+                </MenuFlyoutItem.Icon>
+            </MenuFlyoutItem>
             <MenuFlyoutItem
                 x:Name="ShareItem"
                 x:Uid="BaseLayoutItemContextFlyoutShare"

Files/UserControls/LayoutModes/PhotoAlbum.xaml

@@ -188,7 +188,17 @@
                 </MenuFlyoutItem.Icon>
             </MenuFlyoutItem>
             <MenuFlyoutItem
-                x:Name="ShareItem"
+                x:Name="SetAsLockscreenBackgroundItem"
+                x:Uid="BaseLayoutItemContextFlyoutSetAsLockscreenBackground"
+                Click="{x:Bind local:App.CurrentInstance.InteractionOperations.SetAsLockscreenBackgroundItem_Click}"
+                Text="Set as lockscreen background"
+                Visibility="{x:Bind local:App.InteractionViewModel.IsSelectedItemImage, Mode=OneWay}">
+                <MenuFlyoutItem.Icon>
+                    <FontIcon Glyph="&#xEE3F;" />
+                </MenuFlyoutItem.Icon>
+            </MenuFlyoutItem>
+            <MenuFlyoutItem
+            x:Name="ShareItem"
                 x:Uid="BaseLayoutItemContextFlyoutShare"
                 Click="{x:Bind local:App.CurrentInstance.InteractionOperations.ShareItem_Click}"
                 Text="Share">