icon view: Add a directory setting to block moving icons

This is mostly useful on the desktop (which is the main user of the
free-placement icon view) to be able to lock the layout and avoid
unintentionally moving icons around.  Especially useful for less
computer-literate users.

3 files changed, 78 insertions, 0 deletions

diff --git a/src/file-manager/caja-icon-view-ui.xml b/src/file-manager/caja-icon-view-ui.xml
index b2c9eefa..8ac19e33 100644
--- a/src/file-manager/caja-icon-view-ui.xml
+++ b/src/file-manager/caja-icon-view-ui.xml
@@ -26,6 +26,7 @@
 			</menu>
 			<menuitem name="Clean Up" action="Clean Up"/>
 			<menuitem name="Keep Aligned" action="Keep Aligned"/>
+			<menuitem name="Lock Icons Position" action="Lock Icons Position"/>
 		</placeholder>
 
 	</menu>
@@ -51,6 +52,7 @@
 			</menu>
 			<menuitem name="Clean Up" action="Clean Up"/>
 			<menuitem name="Keep Aligned" action="Keep Aligned"/>
+			<menuitem name="Lock Icons Position" action="Lock Icons Position"/>
 		</placeholder>
 	</placeholder>
 </popup>
diff --git a/src/file-manager/fm-actions.h b/src/file-manager/fm-actions.h
index 5d333168..450dec76 100644
--- a/src/file-manager/fm-actions.h
+++ b/src/file-manager/fm-actions.h
@@ -101,6 +101,7 @@
 #define FM_ACTION_REVERSED_ORDER "Reversed Order"
 #define FM_ACTION_CLEAN_UP "Clean Up"
 #define FM_ACTION_KEEP_ALIGNED "Keep Aligned"
+#define FM_ACTION_LOCK_ICON_POSITION "Lock Icons Position"
 #define FM_ACTION_ARRANGE_ITEMS "Arrange Items"
 #define FM_ACTION_STRETCH "Stretch"
 #define FM_ACTION_UNSTRETCH "Unstretch"
diff --git a/src/file-manager/fm-icon-view.c b/src/file-manager/fm-icon-view.c
index c553b98c..adeba93d 100644
--- a/src/file-manager/fm-icon-view.c
+++ b/src/file-manager/fm-icon-view.c
@@ -801,6 +801,12 @@ update_layout_menus (FMIconView *view)
     gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action),
                                   caja_icon_container_is_keep_aligned (get_icon_container (view)));
     gtk_action_set_sensitive (action, !is_auto_layout);
+
+    action = gtk_action_group_get_action (view->details->icon_action_group,
+                                          FM_ACTION_LOCK_ICON_POSITION);
+    gtk_action_set_visible (action, !is_auto_layout);
+    gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action),
+                                  caja_icon_container_is_lock_icons_position (get_icon_container (view)));
     G_GNUC_END_IGNORE_DEPRECATIONS;
 }
 
@@ -991,6 +997,43 @@ fm_icon_view_set_directory_keep_aligned (FMIconView *icon_view,
 }
 
 static gboolean
+get_default_directory_lock_icons_position (void)
+{
+    return FALSE;
+}
+
+static gboolean
+fm_icon_view_get_directory_lock_icons_position (FMIconView *icon_view,
+        CajaFile *file)
+{
+    if (!fm_icon_view_supports_manual_layout (icon_view))
+    {
+        return FALSE;
+    }
+
+    return caja_file_get_boolean_metadata
+            (file,
+             CAJA_METADATA_KEY_ICON_VIEW_LOCK_ICONS_POSITION,
+             get_default_directory_lock_icons_position ());
+}
+
+static void
+fm_icon_view_set_directory_lock_icons_position (FMIconView *icon_view,
+        CajaFile *file,
+        gboolean lock_icons_position)
+{
+    if (!fm_icon_view_supports_manual_layout (icon_view))
+    {
+        return;
+    }
+
+    caja_file_set_boolean_metadata
+    (file, CAJA_METADATA_KEY_ICON_VIEW_LOCK_ICONS_POSITION,
+     get_default_directory_lock_icons_position (),
+     lock_icons_position);
+}
+
+static gboolean
 fm_icon_view_get_directory_auto_layout (FMIconView *icon_view,
                                         CajaFile *file)
 {
@@ -1350,6 +1393,9 @@ fm_icon_view_begin_loading (FMDirectoryView *view)
     caja_icon_container_set_keep_aligned
     (get_icon_container (icon_view),
      fm_icon_view_get_directory_keep_aligned (icon_view, file));
+    caja_icon_container_set_lock_icons_position
+    (get_icon_container (icon_view),
+     fm_icon_view_get_directory_lock_icons_position (icon_view, file));
     caja_icon_container_set_tighter_layout
     (get_icon_container (icon_view),
      fm_icon_view_get_directory_tighter_layout (icon_view, file));
@@ -1641,6 +1687,27 @@ action_keep_aligned_callback (GtkAction *action,
 }
 
 static void
+action_lock_icons_position_callback (GtkAction *action,
+                                     gpointer user_data)
+{
+    FMIconView *icon_view;
+    CajaFile *file;
+    gboolean lock_icons_position;
+
+    icon_view = FM_ICON_VIEW (user_data);
+
+    lock_icons_position = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
+
+    file = fm_directory_view_get_directory_as_file (FM_DIRECTORY_VIEW (icon_view));
+    fm_icon_view_set_directory_lock_icons_position (icon_view,
+            file,
+            lock_icons_position);
+
+    caja_icon_container_set_lock_icons_position (get_icon_container (icon_view),
+                                                 lock_icons_position);
+}
+
+static void
 switch_to_manual_layout (FMIconView *icon_view)
 {
     if (!fm_icon_view_using_auto_layout (icon_view))
@@ -1742,6 +1809,12 @@ static const GtkToggleActionEntry icon_view_toggle_entries[] =
         G_CALLBACK (action_keep_aligned_callback),
         0
     },
+    /* name, stock id */      { "Lock Icons Position", NULL,
+        /* label, accelerator */    N_("_Lock Icons Position"), NULL,
+        /* tooltip */               N_("Prevent repositioning icons"),
+        G_CALLBACK (action_lock_icons_position_callback),
+        0
+    },
 };
 
 static const GtkRadioActionEntry arrange_radio_entries[] =
@@ -1963,6 +2036,8 @@ fm_icon_view_reset_to_defaults (FMDirectoryView *view)
     clear_sort_criterion (icon_view);
     caja_icon_container_set_keep_aligned
     (icon_container, get_default_directory_keep_aligned ());
+    caja_icon_container_set_lock_icons_position
+    (icon_container, get_default_directory_lock_icons_position ());
     caja_icon_container_set_tighter_layout
     (icon_container, get_default_directory_tighter_layout ());