[nautilus/use-wallpaper-portal: 2/2] files-view: Use xdg-desktop-portal for setting Wallpaper

[Felipe Borges <felipeborges src gnome org>]

commit 014b481c246e28ab15903c947c3f3ef3197318d5
Author: Felipe Borges <felipeborges gnome org>
Date:   Mon Aug 24 12:24:55 2020 +0200

    files-view: Use xdg-desktop-portal for setting Wallpaper
    
    If libportal was found during build, we can use libportal to set
    the Wallpaper. Otherwise, we fallback to the old Nautilus behavior
    of directly copying the image and updating the gsetting.
    
    Fixes #795

 src/nautilus-files-view.c | 106 +++++++++++++++++++++++++++++++++++-----------
 1 file changed, 82 insertions(+), 24 deletions(-)
---
diff --git a/src/nautilus-files-view.c b/src/nautilus-files-view.c
index 2d8439283..1ba026d85 100644
--- a/src/nautilus-files-view.c
+++ b/src/nautilus-files-view.c
@@ -90,6 +90,11 @@
 #include "nautilus-window.h"
 #include "nautilus-tracker-utilities.h"
 
+#ifdef HAVE_LIBPORTAL
+#include <libportal/portal.h>
+#include <libportal/portal-gtk3.h>
+#endif
+
 /* Minimum starting update inverval */
 #define UPDATE_INTERVAL_MIN 100
 /* Maximum update interval */
@@ -6691,6 +6696,77 @@ can_set_wallpaper (GList *selection)
     return TRUE;
 }
 
+#ifdef HAVE_LIBPORTAL
+static void
+set_wallpaper_with_portal_cb (GObject      *source,
+                              GAsyncResult *result,
+                              gpointer      user_data)
+{
+    XdpPortal *portal = XDP_PORTAL (source);
+    g_autoptr(GError) error = NULL;
+
+    if (!xdp_portal_set_wallpaper_finish (portal, result, &error)
+        && !g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
+    {
+            g_warning ("Failed to set wallpaper via portal: %s", error->message);
+    }
+}
+
+static void
+set_wallpaper_with_portal (NautilusFile *file,
+                           gpointer      user_data)
+{
+    g_autoptr(XdpPortal) portal = NULL;
+    g_autofree gchar *uri = NULL;
+    XdpParent *parent = NULL;
+    GtkWidget *toplevel;
+
+    portal = xdp_portal_new ();
+    toplevel = gtk_widget_get_ancestor (GTK_WIDGET (user_data), GTK_TYPE_WINDOW);
+    parent = xdp_parent_new_gtk (GTK_WINDOW (toplevel));
+    uri = nautilus_file_get_uri (file);
+
+    xdp_portal_set_wallpaper (portal,
+                              parent,
+                              uri,
+                              XDP_WALLPAPER_FLAG_BACKGROUND | XDP_WALLPAPER_FLAG_PREVIEW,
+                              NULL,
+                              set_wallpaper_with_portal_cb,
+                              NULL);
+    xdp_parent_free (parent);
+
+}
+#endif /* HAVE_LIBPORTAL */
+
+static void
+set_wallpaper_fallback (NautilusFile *file,
+                        gpointer      user_data)
+{
+    char *target_uri;
+    GList *uris;
+    GFile *parent;
+    GFile *target;
+
+    /* Copy the item to Pictures/Wallpaper (internationalized) since it may be
+     *  remote. Then set it as the current wallpaper. */
+    parent = g_file_new_for_path (g_get_user_special_dir (G_USER_DIRECTORY_PICTURES));
+    target = g_file_get_child (parent, _("Wallpapers"));
+    g_object_unref (parent);
+    g_file_make_directory_with_parents (target, NULL, NULL);
+    target_uri = g_file_get_uri (target);
+    g_object_unref (target);
+    uris = g_list_prepend (NULL, nautilus_file_get_uri (file));
+    nautilus_file_operations_copy_move (uris,
+                                        target_uri,
+                                        GDK_ACTION_COPY,
+                                        GTK_WIDGET (user_data),
+                                        NULL,
+                                        wallpaper_copy_done_callback,
+                                        NULL);
+    g_free (target_uri);
+    g_list_free_full (uris, g_free);
+}
+
 static void
 action_set_as_wallpaper (GSimpleAction *action,
                          GVariant      *state,
@@ -6698,39 +6774,21 @@ action_set_as_wallpaper (GSimpleAction *action,
 {
     g_autolist (NautilusFile) selection = NULL;
 
-    /* Copy the item to Pictures/Wallpaper (internationalized) since it may be
-     *  remote. Then set it as the current wallpaper. */
-
     g_assert (NAUTILUS_IS_FILES_VIEW (user_data));
 
     selection = nautilus_view_get_selection (user_data);
-
     if (can_set_wallpaper (selection))
     {
         NautilusFile *file;
-        char *target_uri;
-        GList *uris;
-        GFile *parent;
-        GFile *target;
 
         file = NAUTILUS_FILE (selection->data);
 
-        parent = g_file_new_for_path (g_get_user_special_dir (G_USER_DIRECTORY_PICTURES));
-        target = g_file_get_child (parent, _("Wallpapers"));
-        g_object_unref (parent);
-        g_file_make_directory_with_parents (target, NULL, NULL);
-        target_uri = g_file_get_uri (target);
-        g_object_unref (target);
-        uris = g_list_prepend (NULL, nautilus_file_get_uri (file));
-        nautilus_file_operations_copy_move (uris,
-                                            target_uri,
-                                            GDK_ACTION_COPY,
-                                            GTK_WIDGET (user_data),
-                                            NULL,
-                                            wallpaper_copy_done_callback,
-                                            NULL);
-        g_free (target_uri);
-        g_list_free_full (uris, g_free);
+#ifdef HAVE_LIBPORTAL
+        set_wallpaper_with_portal (file, user_data);
+        return;
+#endif
+
+        set_wallpaper_fallback (file, user_data);
     }
 }