Adding upstream version 2.10.36.upstream/2.10.36

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 633 insertions, 0 deletions

diff --git a/libgimpwidgets/gimpunitmenu.c b/libgimpwidgets/gimpunitmenu.c
new file mode 100644
index 0000000..3777a62
--- /dev/null
+++ b/libgimpwidgets/gimpunitmenu.c
@@ -0,0 +1,633 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1999 Peter Mattis and Spencer Kimball
+ *
+ * gimpunitmenu.c
+ * Copyright (C) 1999 Michael Natterer <mitch@gimp.org>
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#undef GSEAL_ENABLE
+
+#include <gegl.h>
+/* FIXME: #undef GTK_DISABLE_DEPRECATED */
+#undef GTK_DISABLE_DEPRECATED
+#include <gtk/gtk.h>
+
+#include "libgimpbase/gimpbase.h"
+
+#include "gimpwidgetstypes.h"
+
+#include "gimpdialog.h"
+#include "gimphelpui.h"
+#include "gimpwidgets.h"
+
+#undef GIMP_DISABLE_DEPRECATED
+#include "gimpoldwidgets.h"
+#include "gimpunitmenu.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+/**
+ * SECTION: gimpunitmenu
+ * @title: GimpUnitMenu
+ * @short_description: Widget for selecting a #GimpUnit.
+ * @see_also: #GimpUnit, #GimpSizeEntry, gimp_coordinates_new()
+ *
+ * This widget provides a #GtkOptionMenu which contains a list of
+ * #GimpUnit's.
+ *
+ * You can specify the string that will be displayed for each unit by
+ * passing a printf-like @format string to gimp_unit_menu_new().
+ *
+ * The constructor also lets you choose if the menu should contain
+ * items for GIMP_UNIT_PIXEL, GIMP_UNIT_PERCENT and a "More..." item
+ * which will pop up a dialog for selecting user-defined units.
+ *
+ * Whenever the user selects a unit from the menu or the dialog, the
+ * "unit_changed" signal will be emitted.
+ **/
+
+
+enum
+{
+  UNIT_CHANGED,
+  LAST_SIGNAL
+};
+
+enum
+{
+  UNIT_COLUMN,
+  FACTOR_COLUMN,
+  DATA_COLUMN,
+  NUM_COLUMNS
+};
+
+
+static void   gimp_unit_menu_finalize (GObject   *object);
+static void   gimp_unit_menu_callback (GtkWidget *widget,
+                                       gpointer   data);
+
+
+G_DEFINE_TYPE (GimpUnitMenu, gimp_unit_menu, GTK_TYPE_OPTION_MENU)
+
+#define parent_class gimp_unit_menu_parent_class
+
+static guint gimp_unit_menu_signals[LAST_SIGNAL] = { 0 };
+
+
+static void
+gimp_unit_menu_class_init (GimpUnitMenuClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  /**
+   * GimpUnitMenu::unit-changed:
+   *
+   * This signal is emitted whenever the user selects a #GimpUnit from
+   * the #GimpUnitMenu.
+   **/
+  gimp_unit_menu_signals[UNIT_CHANGED] =
+    g_signal_new ("unit-changed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpUnitMenuClass, unit_changed),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+
+  object_class->finalize = gimp_unit_menu_finalize;
+
+  klass->unit_changed    = NULL;
+}
+
+static void
+gimp_unit_menu_init (GimpUnitMenu *menu)
+{
+  menu->format       = NULL;
+  menu->unit         = GIMP_UNIT_PIXEL;
+  menu->show_pixels  = FALSE;
+  menu->show_percent = FALSE;
+  menu->selection    = NULL;
+  menu->tv           = NULL;
+}
+
+static void
+gimp_unit_menu_finalize (GObject *object)
+{
+  GimpUnitMenu *menu = GIMP_UNIT_MENU (object);
+
+  g_clear_pointer (&menu->format, g_free);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+/**
+ * gimp_unit_menu_new:
+ * @format:       A printf-like format string which is used to create the unit
+ *                strings.
+ * @unit:         The initially selected unit.
+ * @show_pixels:  %TRUE if the unit menu should contain an item for
+ *                GIMP_UNIT_PIXEL.
+ * @show_percent: %TRUE in the unit menu should contain an item for
+ *                GIMP_UNIT_PERCENT.
+ * @show_custom:  %TRUE if the unit menu should contain a "More..." item for
+ *                opening the user-defined-unit selection dialog.
+ *
+ * Creates a new #GimpUnitMenu widget.
+ *
+ * For the @format string's possible expansions, see gimp_unit_format_string().
+ *
+ * Returns: A pointer to the new #GimpUnitMenu widget.
+ **/
+GtkWidget *
+gimp_unit_menu_new (const gchar *format,
+                    GimpUnit     unit,
+                    gboolean     show_pixels,
+                    gboolean     show_percent,
+                    gboolean     show_custom)
+{
+  GimpUnitMenu *unit_menu;
+  GtkWidget    *menu;
+  GtkWidget    *menuitem;
+  gchar        *string;
+  GimpUnit      u;
+
+  g_return_val_if_fail (((unit >= GIMP_UNIT_PIXEL) &&
+                         (unit < gimp_unit_get_number_of_units ())) ||
+                        (unit == GIMP_UNIT_PERCENT), NULL);
+
+  if ((unit >= gimp_unit_get_number_of_built_in_units ()) &&
+      (unit != GIMP_UNIT_PERCENT))
+    show_custom = TRUE;
+
+  unit_menu = g_object_new (GIMP_TYPE_UNIT_MENU, NULL);
+
+  unit_menu->format       = g_strdup (format);
+  unit_menu->show_pixels  = show_pixels;
+  unit_menu->show_percent = show_percent;
+
+  menu = gtk_menu_new ();
+  for (u = show_pixels ? GIMP_UNIT_PIXEL : GIMP_UNIT_INCH;
+       u < gimp_unit_get_number_of_built_in_units ();
+       u++)
+    {
+      /*  special cases "pixels" and "percent"  */
+      if (u == GIMP_UNIT_INCH)
+        {
+          if (show_percent)
+            {
+              string = gimp_unit_format_string (format, GIMP_UNIT_PERCENT);
+              menuitem = gtk_menu_item_new_with_label (string);
+              g_free (string);
+
+              gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
+              g_object_set_data (G_OBJECT (menuitem), "gimp_unit_menu",
+                                 GINT_TO_POINTER (GIMP_UNIT_PERCENT));
+              gtk_widget_show (menuitem);
+
+              g_signal_connect (menuitem, "activate",
+                                G_CALLBACK (gimp_unit_menu_callback),
+                                unit_menu);
+            }
+
+          if (show_pixels || show_percent)
+            {
+              menuitem = gtk_menu_item_new ();
+              gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
+              gtk_widget_set_sensitive (menuitem, FALSE);
+              gtk_widget_show (menuitem);
+            }
+        }
+
+      string = gimp_unit_format_string (format, u);
+      menuitem = gtk_menu_item_new_with_label (string);
+      g_free (string);
+
+      gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
+      g_object_set_data (G_OBJECT (menuitem), "gimp_unit_menu",
+                         GINT_TO_POINTER (u));
+      gtk_widget_show (menuitem);
+
+      g_signal_connect (menuitem, "activate",
+                        G_CALLBACK (gimp_unit_menu_callback),
+                        unit_menu);
+    }
+
+  if ((unit >= gimp_unit_get_number_of_built_in_units ()) &&
+      (unit != GIMP_UNIT_PERCENT))
+    {
+      menuitem = gtk_menu_item_new ();
+      gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
+      gtk_widget_set_sensitive (menuitem, FALSE);
+      gtk_widget_show (menuitem);
+
+      string = gimp_unit_format_string (format, unit);
+      menuitem = gtk_menu_item_new_with_label (string);
+      g_free (string);
+
+      gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
+      g_object_set_data (G_OBJECT (menuitem), "gimp_unit_menu",
+                         GINT_TO_POINTER (unit));
+      gtk_widget_show (menuitem);
+
+      g_signal_connect (menuitem, "activate",
+                        G_CALLBACK (gimp_unit_menu_callback),
+                        unit_menu);
+    }
+
+  if (show_custom)
+    {
+      menuitem = gtk_menu_item_new ();
+      gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
+      gtk_widget_set_sensitive (menuitem, FALSE);
+      gtk_widget_show (menuitem);
+
+      menuitem = gtk_menu_item_new_with_label (_("More..."));
+      gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
+      g_object_set_data (G_OBJECT (menuitem), "gimp_unit_menu",
+                         GINT_TO_POINTER (GIMP_UNIT_PERCENT + 1));
+      gtk_widget_show (menuitem);
+
+      g_signal_connect (menuitem, "activate",
+                        G_CALLBACK (gimp_unit_menu_callback),
+                        unit_menu);
+    }
+
+  gtk_option_menu_set_menu (GTK_OPTION_MENU (unit_menu), menu);
+
+  unit_menu->unit = unit;
+  gtk_option_menu_set_history (GTK_OPTION_MENU (unit_menu),
+                               (unit == GIMP_UNIT_PIXEL) ? 0 :
+                               ((unit == GIMP_UNIT_PERCENT) ?
+                                (show_pixels ? 1 : 0) :
+                                (((show_pixels || show_percent) ? 2 : 0) +
+                                 ((show_pixels && show_percent) ? 1 : 0) +
+                                 ((unit < GIMP_UNIT_END) ?
+                                  (unit - 1) : GIMP_UNIT_END))));
+
+  return GTK_WIDGET (unit_menu);
+}
+
+/**
+ * gimp_unit_menu_set_unit:
+ * @menu:  The unit menu you want to set the unit for.
+ * @unit: The new unit.
+ *
+ * Sets a new #GimpUnit for the specified #GimpUnitMenu.
+ **/
+void
+gimp_unit_menu_set_unit (GimpUnitMenu *menu,
+                         GimpUnit      unit)
+{
+  GtkWidget *menuitem = NULL;
+  GList     *items;
+  gint       user_unit;
+
+  g_return_if_fail (GIMP_IS_UNIT_MENU (menu));
+  g_return_if_fail (((unit >= GIMP_UNIT_PIXEL) &&
+                     ((unit > GIMP_UNIT_PIXEL) || menu->show_pixels) &&
+                     (unit < gimp_unit_get_number_of_units ())) ||
+                    ((unit == GIMP_UNIT_PERCENT) && menu->show_percent));
+
+  if (unit == menu->unit)
+    return;
+
+  items = GTK_MENU_SHELL (GTK_OPTION_MENU (menu)->menu)->children;
+  user_unit = (GIMP_UNIT_END +
+               (((menu->show_pixels || menu->show_percent) ? 2 : 0) +
+                ((menu->show_pixels && menu->show_percent) ? 1 : 0)));
+
+  if ((unit >= GIMP_UNIT_END) && (unit != GIMP_UNIT_PERCENT))
+    {
+      gchar *string;
+
+      if ((g_list_length (items) - 3) >= user_unit)
+        {
+          gtk_widget_destroy (GTK_WIDGET (g_list_nth_data (items,
+                                                           user_unit - 1)));
+          gtk_widget_destroy (GTK_WIDGET (g_list_nth_data (items,
+                                                           user_unit - 1)));
+        }
+
+      menuitem = gtk_menu_item_new ();
+      gtk_menu_shell_append (GTK_MENU_SHELL (GTK_OPTION_MENU (menu)->menu),
+                             menuitem);
+      gtk_widget_set_sensitive (menuitem, FALSE);
+      gtk_menu_reorder_child (GTK_MENU (GTK_OPTION_MENU (menu)->menu),
+                              menuitem, user_unit - 1);
+      gtk_widget_show (menuitem);
+
+      string = gimp_unit_format_string (menu->format, unit);
+      menuitem = gtk_menu_item_new_with_label (string);
+      g_free (string);
+
+      gtk_menu_shell_append (GTK_MENU_SHELL (GTK_OPTION_MENU (menu)->menu),
+                             menuitem);
+      g_object_set_data (G_OBJECT (menuitem), "gimp_unit_menu",
+                         GINT_TO_POINTER (unit));
+      gtk_menu_reorder_child (GTK_MENU (GTK_OPTION_MENU (menu)->menu),
+                              menuitem, user_unit);
+      gtk_widget_show (menuitem);
+
+      g_signal_connect (menuitem, "activate",
+                        G_CALLBACK (gimp_unit_menu_callback),
+                        menu);
+    }
+
+  menu->unit = unit;
+  gtk_option_menu_set_history (GTK_OPTION_MENU (menu),
+                               (unit == GIMP_UNIT_PIXEL) ? 0 :
+                               ((unit == GIMP_UNIT_PERCENT) ?
+                                (menu->show_pixels ? 1 : 0) :
+                                (((menu->show_pixels ||
+                                   menu->show_percent) ? 2 : 0) +
+                                 ((menu->show_pixels &&
+                                   menu->show_percent) ? 1 : 0) +
+                                 ((unit < GIMP_UNIT_END) ?
+                                  (unit - 1) : GIMP_UNIT_END))));
+
+  g_signal_emit (menu, gimp_unit_menu_signals[UNIT_CHANGED], 0);
+}
+
+/**
+ * gimp_unit_menu_get_unit:
+ * @menu: The unit menu you want to know the unit of.
+ *
+ * Returns the #GimpUnit the user has selected from the #GimpUnitMenu.
+ *
+ * Returns: The unit the user has selected.
+ **/
+GimpUnit
+gimp_unit_menu_get_unit (GimpUnitMenu *menu)
+{
+  g_return_val_if_fail (GIMP_IS_UNIT_MENU (menu), GIMP_UNIT_INCH);
+
+  return menu->unit;
+}
+
+
+/**
+ * gimp_unit_menu_set_pixel_digits:
+ * @menu: a #GimpUnitMenu
+ * @digits: the number of digits to display for a pixel size
+ *
+ * A GimpUnitMenu can be setup to control the number of digits shown
+ * by attached spinbuttons. Please refer to the documentation of
+ * gimp_unit_menu_update() to see how this is done.
+ *
+ * This function specifies the number of digits shown for a size in
+ * pixels. Usually this is 0 (only full pixels). If you want to allow
+ * the user to specify sub-pixel sizes using the attached spinbuttons,
+ * specify the number of digits after the decimal point here. You
+ * should do this after attaching your spinbuttons.
+ **/
+void
+gimp_unit_menu_set_pixel_digits (GimpUnitMenu *menu,
+                                 gint          digits)
+{
+  GimpUnit unit;
+
+  g_return_if_fail (GIMP_IS_UNIT_MENU (menu));
+
+  menu->pixel_digits = digits;
+
+  gimp_unit_menu_update (GTK_WIDGET (menu), &unit);
+}
+
+/**
+ * gimp_unit_menu_get_pixel_digits:
+ * @menu: a #GimpUnitMenu
+ *
+ * Retrieve the number of digits for a pixel size as set by
+ * gimp_unit_menu_set_pixel_digits().
+ *
+ * Return value: the configured number of digits for a pixel size
+ **/
+gint
+gimp_unit_menu_get_pixel_digits (GimpUnitMenu *menu)
+{
+  g_return_val_if_fail (GIMP_IS_UNIT_MENU (menu), 0);
+
+  return menu->pixel_digits;
+}
+
+/*  private callback of gimp_unit_menu_create_selection ()  */
+static void
+gimp_unit_menu_selection_response (GtkWidget    *widget,
+                                   gint          response_id,
+                                   GimpUnitMenu *menu)
+{
+  if (response_id == GTK_RESPONSE_OK)
+    {
+      GtkTreeSelection *sel;
+      GtkTreeModel     *model;
+      GtkTreeIter       iter;
+
+      sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (menu->tv));
+      if (menu->selection && gtk_tree_selection_get_selected (sel, &model,
+                                                              &iter))
+        {
+          GValue   val = G_VALUE_INIT;
+          GimpUnit unit;
+
+          gtk_tree_model_get_value (model, &iter, 2, &val);
+          unit = (GimpUnit) g_value_get_int (&val);
+          g_value_unset (&val);
+
+          gimp_unit_menu_set_unit (menu, unit);
+        }
+    }
+
+  gtk_widget_destroy (menu->selection);
+}
+
+static void
+gimp_unit_menu_selection_row_activated_callback (GtkTreeView       *tv,
+                                                 GtkTreePath       *path,
+                                                 GtkTreeViewColumn *column,
+                                                 GimpUnitMenu      *menu)
+{
+  gtk_dialog_response (GTK_DIALOG (menu->selection), GTK_RESPONSE_OK);
+}
+
+/*  private function of gimp_unit_menu_callback ()  */
+static void
+gimp_unit_menu_create_selection (GimpUnitMenu *menu)
+{
+  GtkWidget        *parent = gtk_widget_get_toplevel (GTK_WIDGET (menu));
+  GtkWidget        *vbox;
+  GtkWidget        *scrolled_win;
+  GtkListStore     *list;
+  GtkTreeSelection *sel;
+  GtkTreeIter       iter;
+  GtkTreePath      *path;
+  GtkDialogFlags    flags  = GTK_DIALOG_DESTROY_WITH_PARENT;
+  GimpUnit          unit;
+  gint              num_units;
+
+  if (gtk_window_get_modal (GTK_WINDOW (parent)))
+    flags |= GTK_DIALOG_MODAL;
+
+  menu->selection = gimp_dialog_new (_("Unit Selection"), "gimp-unit-selection",
+                                     parent, flags,
+                                     gimp_standard_help_func,
+                                     "gimp-unit-dialog",
+
+                                     _("_Cancel"), GTK_RESPONSE_CANCEL,
+                                     _("_OK"),     GTK_RESPONSE_OK,
+
+                                     NULL);
+
+  gtk_dialog_set_alternative_button_order (GTK_DIALOG (menu->selection),
+                                           GTK_RESPONSE_OK,
+                                           GTK_RESPONSE_CANCEL,
+                                           -1);
+
+  g_object_add_weak_pointer (G_OBJECT (menu->selection),
+                             (gpointer) &menu->selection);
+
+  g_signal_connect (menu->selection, "response",
+                    G_CALLBACK (gimp_unit_menu_selection_response),
+                    menu);
+
+  g_signal_connect_object (menu, "unmap",
+                           G_CALLBACK (gtk_widget_destroy),
+                           menu->selection, G_CONNECT_SWAPPED);
+
+  /*  the main vbox  */
+  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+  gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
+  gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (menu->selection))),
+                      vbox, TRUE, TRUE, 0);
+  gtk_widget_show (vbox);
+
+  /*  the selection list  */
+  scrolled_win = gtk_scrolled_window_new (NULL, NULL);
+  gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_win),
+                                       GTK_SHADOW_ETCHED_IN);
+  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
+                                  GTK_POLICY_NEVER,
+                                  GTK_POLICY_ALWAYS);
+  gtk_box_pack_start (GTK_BOX (vbox), scrolled_win, TRUE, TRUE, 0);
+  gtk_widget_show (scrolled_win);
+
+  list = gtk_list_store_new (NUM_COLUMNS, G_TYPE_STRING, G_TYPE_STRING,
+                             G_TYPE_INT);
+  menu->tv = gtk_tree_view_new_with_model (GTK_TREE_MODEL (list));
+  g_object_unref (list);
+
+  gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (menu->tv),
+                                               -1, _("Unit"),
+                                               gtk_cell_renderer_text_new (),
+                                               "text", UNIT_COLUMN, NULL);
+  gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (menu->tv),
+                                               -1, _("Factor"),
+                                               gtk_cell_renderer_text_new (),
+                                               "text", FACTOR_COLUMN, NULL);
+
+  /*  the unit lines  */
+  num_units = gimp_unit_get_number_of_units ();
+  for (unit = GIMP_UNIT_END; unit < num_units; unit++)
+    {
+      gchar *string;
+
+      gtk_list_store_append (list, &iter);
+
+      string = gimp_unit_format_string (menu->format, unit);
+      gtk_list_store_set (list, &iter,
+                          UNIT_COLUMN, string,
+                          -1);
+      g_free (string);
+
+      string = gimp_unit_format_string ("(%f)", unit);
+      gtk_list_store_set (list, &iter,
+                          FACTOR_COLUMN, string,
+                          -1);
+      g_free (string);
+
+      gtk_list_store_set (list, &iter, DATA_COLUMN, unit, -1);
+    }
+
+  gtk_widget_set_size_request (menu->tv, -1, 150);
+
+  gtk_container_add (GTK_CONTAINER (scrolled_win), menu->tv);
+
+  g_signal_connect (menu->tv, "row-activated",
+                    G_CALLBACK (gimp_unit_menu_selection_row_activated_callback),
+                    menu);
+
+  gtk_widget_show (menu->tv);
+
+  g_signal_connect (menu->tv, "destroy",
+                    G_CALLBACK (gtk_widget_destroyed),
+                    &menu->tv);
+
+  gtk_widget_show (vbox);
+  gtk_widget_show (menu->selection);
+
+  if (menu->unit >= GIMP_UNIT_END)
+    {
+      path = gtk_tree_path_new ();
+      gtk_tree_path_append_index (path, menu->unit - GIMP_UNIT_END);
+
+      sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (menu->tv));
+      gtk_tree_selection_select_path (sel, path);
+
+      gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (menu->tv), path, NULL,
+                                    FALSE, 0.0, 0.0);
+    }
+}
+
+static void
+gimp_unit_menu_callback (GtkWidget *widget,
+                         gpointer   data)
+{
+  GimpUnitMenu *menu = data;
+  GimpUnit      new_unit;
+
+  new_unit = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (widget),
+                                                  "gimp_unit_menu"));
+
+  if (menu->unit == new_unit)
+    return;
+
+  /*  was "More..." selected?  */
+  if (new_unit == (GIMP_UNIT_PERCENT + 1))
+    {
+      gtk_option_menu_set_history (GTK_OPTION_MENU (menu),
+                                   (menu->unit == GIMP_UNIT_PIXEL) ? 0 :
+                                   ((menu->unit == GIMP_UNIT_PERCENT) ?
+                                    (menu->show_pixels ? 1 : 0) :
+                                    ((menu->show_pixels ||
+                                      menu->show_percent ? 2 : 0) +
+                                     (menu->show_pixels &&
+                                      menu->show_percent ? 1 : 0) +
+                                     ((menu->unit < GIMP_UNIT_END) ?
+                                      menu->unit - 1 : GIMP_UNIT_END))));
+      if (! menu->selection)
+        gimp_unit_menu_create_selection (menu);
+      return;
+    }
+  else if (menu->selection)
+    {
+      gtk_widget_destroy (menu->selection);
+    }
+
+  gimp_unit_menu_set_unit (menu, new_unit);
+}