Reduce opacity of items about to be cut

hyperplane/gtk/style-dark.css

@@ -6,6 +6,10 @@ navigation-view > shadow {
 	background: radial-gradient(farthest-side at right, rgba(0,0,0,.15) 0%, rgba(0,0,0,0) 100%);
 }
 
+.cut-item {
+    filter: brightness(60%);
+}
+
 .blue-icon { color: @blue_1; }
 .blue-background { background: alpha(@blue_5, 0.5); }
 .blue-extension { background: @blue_1; color: @dark_5; }

hyperplane/gtk/style.css

@@ -57,6 +57,15 @@ rubberband {
     font-size: small;
 }
 
+/*
+This makes it look like the opacity decreased
+The reason I cannot actually do that is that it reduces the opacity of widgets individually
+and that looks ugly.
+*/
+.cut-item {
+    filter: contrast(50%) brightness(130%);
+}
+
 .sidebar-check-button > check {
     color: @sidebar_fg_color;
     background-color: @sidebar_shade_color;

hyperplane/items_page.py

@@ -361,9 +361,7 @@ def __unbind(self, _factory: Gtk.SignalListItemFactory, item: Gtk.ListItem) -> N
 
     def __tags_changed(self, _obj: GObject.Object, change: Gtk.FilterChange) -> None:
         # TODO: I could do less/more strict with adding/removing tags separately
-        self.item_filter.changed(
-            change
-        )
+        self.item_filter.changed(change)
 
     def __toggle_hidden(self, *_args: Any) -> None:
         if shared.show_hidden:
@@ -421,7 +419,12 @@ def __popup_menu(self) -> None:
             # Read-only special directories
             if self.gfile:
                 items.add("properties")
-                if (self.gfile.get_uri_scheme() in {"trash", "recent", "burn", "network"}):
+                if self.gfile.get_uri_scheme() in {
+                    "trash",
+                    "recent",
+                    "burn",
+                    "network",
+                }:
                     items.remove("paste")
                     items.remove("new-folder")
 
@@ -711,7 +714,7 @@ def create_folder(*_args: Any):
         dialog.choose()
 
     def __copy(self, *_args: Any) -> None:
-        shared.cut_page = None
+        shared.set_cut_widgets(set())
         clipboard = Gdk.Display.get_default().get_clipboard()
         if not (items := self.get_selected_gfiles()):
             return
@@ -722,7 +725,15 @@ def __copy(self, *_args: Any) -> None:
 
     def __cut(self, _obj: Any, *args: Any) -> None:
         self.__copy(*args)
-        shared.cut_page = self
+
+        children = self.grid_view.observe_children()
+
+        cut_widgets = set()
+
+        for pos in self.get_selected_positions():
+            cut_widgets.add(children.get_item(pos).get_first_child())
+
+        shared.set_cut_widgets(cut_widgets)
 
     def __paste(self, *_args: Any) -> None:
         clipboard = Gdk.Display.get_default().get_clipboard()
@@ -748,7 +759,7 @@ def paste_file_cb(clipboard: Gdk.Clipboard, result: Gio.AsyncResult) -> None:
             try:
                 file_list = clipboard.read_value_finish(result)
             except GLib.Error:
-                shared.cut_page = None
+                shared.set_cut_widgets(set())
                 return
 
             for src in file_list:
@@ -759,7 +770,7 @@ def paste_file_cb(clipboard: Gdk.Clipboard, result: Gio.AsyncResult) -> None:
                 except (FileNotFoundError, TypeError):
                     continue
 
-                if shared.cut_page:
+                if shared.cut_widgets:
                     try:
                         move(src, dst)
                     except FileExistsError:
@@ -785,11 +796,11 @@ def paste_file_cb(clipboard: Gdk.Clipboard, result: Gio.AsyncResult) -> None:
 
                     paths.append(dst)
 
-            if shared.cut_page:
+            if shared.cut_widgets:
                 shared.undo_queue[time()] = ("cut", paths)
             else:
                 shared.undo_queue[time()] = ("copy", paths)
-            shared.cut_page = None
+            shared.set_cut_widgets(set())
 
         def paste_texture_cb(clipboard: Gdk.Clipboard, result: Gio.AsyncResult) -> None:
             nonlocal dst

hyperplane/shared.py.in

@@ -51,7 +51,6 @@ del path
 
 app = None  # pylint: disable=invalid-name
 search = ""  # pylint: disable=invalid-name
-cut_page = None  # pylint: disable=invalid-name
 right_clicked_file = None  # pylint: disable=invalid-name
 undo_queue = {}
 
@@ -82,3 +81,22 @@ else:
     recent_manager = Gtk.RecentManager.get_default()
 
 icon_names = Gtk.IconTheme.get_for_display(Gdk.Display.get_default()).get_icon_names()
+
+cut_widgets = set()
+
+
+def set_cut_widgets(widgets: list[Gtk.Widget]) -> None:
+    """
+    Sets widgets representing files that are going to be moved after a paste operation.
+
+    This is so their "opacity" can be reduced.
+    """
+    global cut_widgets  # pylint: disable=global-statement
+
+    for widget in cut_widgets:
+        widget.remove_css_class("cut-item")
+
+    for widget in widgets:
+        widget.add_css_class("cut-item")
+
+    cut_widgets = widgets