[gimp/gtk3-port: 386/460] app: behold unseen fancy shit in preferences

[Michael Natterer <mitch src gnome org>]

commit 0b4cc9dec700d95259f6f2a11c37788355009cac
Author: Michael Natterer <mitch gimp org>
Date:   Wed May 9 11:20:11 2018 +0200

    app: behold unseen fancy shit in preferences

 app/widgets/gimpprefsbox.c |  124 ++++++++-----------------------------------
 1 files changed, 23 insertions(+), 101 deletions(-)
---
diff --git a/app/widgets/gimpprefsbox.c b/app/widgets/gimpprefsbox.c
index 66d95aa..5e655fc 100644
--- a/app/widgets/gimpprefsbox.c
+++ b/app/widgets/gimpprefsbox.c
@@ -41,8 +41,7 @@ enum
   COLUMN_PAGE_ICON_NAME,
   COLUMN_PAGE_ICON_SIZE,
   COLUMN_PAGE_TITLE,
-  COLUMN_PAGE_HELP_ID,
-  COLUMN_PAGE_INDEX
+  COLUMN_PAGE_HELP_ID
 };
 
 
@@ -50,14 +49,13 @@ struct _GimpPrefsBoxPrivate
 {
   GtkTreeStore *store;
   GtkWidget    *tree_view;
-  GtkWidget    *notebook;
+  GtkWidget    *stack;
   GtkWidget    *label;
   GtkWidget    *image;
 
   gint          tree_icon_size;
   gint          page_icon_size;
 
-  gint          page_index;
   gchar        *page_icon_name;
   gchar        *page_help_id;
 };
@@ -65,14 +63,10 @@ struct _GimpPrefsBoxPrivate
 #define GET_PRIVATE(obj) (((GimpPrefsBox *) (obj))->priv)
 
 
-static void   gimp_prefs_box_finalize               (GObject          *object);
+static void   gimp_prefs_box_finalize             (GObject          *object);
 
-static void   gimp_prefs_box_tree_select_callback   (GtkTreeSelection *sel,
-                                                     GimpPrefsBox     *box);
-static void   gimp_prefs_box_notebook_page_callback (GtkNotebook      *notebook,
-                                                     gpointer          page,
-                                                     guint             page_num,
-                                                     GimpPrefsBox     *box);
+static void   gimp_prefs_box_tree_select_callback (GtkTreeSelection *sel,
+                                                   GimpPrefsBox     *box);
 
 
 G_DEFINE_TYPE (GimpPrefsBox, gimp_prefs_box, GTK_TYPE_BOX)
@@ -126,15 +120,14 @@ gimp_prefs_box_init (GimpPrefsBox *box)
   gtk_box_pack_start (GTK_BOX (box), frame, FALSE, FALSE, 0);
   gtk_widget_show (frame);
 
-  private->store = gtk_tree_store_new (8,
+  private->store = gtk_tree_store_new (7,
                                        G_TYPE_STRING,
                                        G_TYPE_INT,
                                        G_TYPE_STRING,
                                        G_TYPE_STRING,
                                        G_TYPE_INT,
                                        G_TYPE_STRING,
-                                       G_TYPE_STRING,
-                                       G_TYPE_INT);
+                                       G_TYPE_STRING);
   private->tree_view =
     gtk_tree_view_new_with_model (GTK_TREE_MODEL (private->store));
   g_object_unref (private->store);
@@ -162,7 +155,7 @@ gimp_prefs_box_init (GimpPrefsBox *box)
   gtk_widget_show (private->tree_view);
 
 
-  /*  the notebook  */
+  /*  the stack  */
 
   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
   gtk_box_pack_start (GTK_BOX (box), vbox, TRUE, TRUE, 0);
@@ -195,20 +188,17 @@ gimp_prefs_box_init (GimpPrefsBox *box)
   gtk_box_pack_end (GTK_BOX (hbox), private->image, FALSE, FALSE, 0);
   gtk_widget_show (private->image);
 
-  /* The main preferences notebook */
-  private->notebook = gtk_notebook_new ();
-  gtk_notebook_set_show_tabs (GTK_NOTEBOOK (private->notebook), FALSE);
-  gtk_notebook_set_show_border (GTK_NOTEBOOK (private->notebook), FALSE);
-  gtk_box_pack_start (GTK_BOX (vbox), private->notebook, TRUE, TRUE, 0);
-  gtk_widget_show (private->notebook);
+  /* The main preferences stack */
+  private->stack = gtk_stack_new ();
+  gtk_stack_set_transition_type (GTK_STACK (private->stack),
+                                 GTK_STACK_TRANSITION_TYPE_SLIDE_UP_DOWN);
+  gtk_box_pack_start (GTK_BOX (vbox), private->stack, TRUE, TRUE, 0);
+  gtk_widget_show (private->stack);
 
   sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (private->tree_view));
   g_signal_connect (sel, "changed",
                     G_CALLBACK (gimp_prefs_box_tree_select_callback),
                     box);
-  g_signal_connect (private->notebook, "switch-page",
-                    G_CALLBACK (gimp_prefs_box_notebook_page_callback),
-                    box);
 }
 
 static void
@@ -232,7 +222,7 @@ gimp_prefs_box_tree_select_callback (GtkTreeSelection *sel,
   gchar               *page_title;
   gchar               *page_icon_name;
   gint                 page_icon_size;
-  gint                 page_index;
+  gchar               *page_help_id;
 
   if (! gtk_tree_selection_get_selected (sel, &model, &iter))
     return;
@@ -241,7 +231,7 @@ gimp_prefs_box_tree_select_callback (GtkTreeSelection *sel,
                       COLUMN_PAGE_ICON_NAME, &page_icon_name,
                       COLUMN_PAGE_ICON_SIZE, &page_icon_size,
                       COLUMN_PAGE_TITLE,     &page_title,
-                      COLUMN_PAGE_INDEX,     &page_index,
+                      COLUMN_PAGE_HELP_ID,   &page_help_id,
                       -1);
 
   gtk_label_set_text (GTK_LABEL (private->label), page_title);
@@ -252,78 +242,10 @@ gimp_prefs_box_tree_select_callback (GtkTreeSelection *sel,
                                 page_icon_size);
   g_free (page_icon_name);
 
-  g_signal_handlers_block_by_func (private->notebook,
-                                   gimp_prefs_box_notebook_page_callback,
-                                   sel);
-
-  gtk_notebook_set_current_page (GTK_NOTEBOOK (private->notebook),
-                                 page_index);
-
-  g_signal_handlers_unblock_by_func (private->notebook,
-                                     gimp_prefs_box_notebook_page_callback,
-                                     sel);
-}
+  gtk_stack_set_visible_child_name (GTK_STACK (private->stack),
+                                    page_help_id);
 
-static void
-gimp_prefs_box_notebook_page_callback (GtkNotebook  *notebook,
-                                       gpointer      page,
-                                       guint         page_num,
-                                       GimpPrefsBox *box)
-{
-  GimpPrefsBoxPrivate *private = GET_PRIVATE (box);
-  GtkTreeSelection    *sel;
-  GtkTreeModel        *model;
-  GtkTreeIter          iter;
-  gboolean             iter_valid;
-
-  sel   = gtk_tree_view_get_selection (GTK_TREE_VIEW (private->tree_view));
-  model = gtk_tree_view_get_model (GTK_TREE_VIEW (private->tree_view));
-
-  for (iter_valid = gtk_tree_model_get_iter_first (model, &iter);
-       iter_valid;
-       iter_valid = gtk_tree_model_iter_next (model, &iter))
-    {
-      gint index;
-
-      gtk_tree_model_get (model, &iter,
-                          COLUMN_PAGE_INDEX, &index,
-                          -1);
-
-      if (index == page_num)
-        {
-          gtk_tree_selection_select_iter (sel, &iter);
-          return;
-        }
-
-      if (gtk_tree_model_iter_has_child (model, &iter))
-        {
-          gint num_children;
-          gint i;
-
-          num_children = gtk_tree_model_iter_n_children (model, &iter);
-
-          for (i = 0; i < num_children; i++)
-            {
-              GtkTreeIter child_iter;
-
-              gtk_tree_model_iter_nth_child (model, &child_iter, &iter, i);
-              gtk_tree_model_get (model, &child_iter,
-                                  COLUMN_PAGE_INDEX, &index,
-                                  -1);
-
-              if (index == page_num)
-                {
-                  GtkTreePath *path;
-
-                  path = gtk_tree_model_get_path (model, &child_iter);
-                  gtk_tree_view_expand_to_path (GTK_TREE_VIEW (private->tree_view),
-                                                path);
-                  gtk_tree_selection_select_iter (sel, &child_iter);
-                  return;
-                }
-            }
-        }
-    }
+  g_free (page_help_id);
 }
 
 
@@ -355,7 +277,8 @@ gimp_prefs_box_add_page (GimpPrefsBox      *box,
   private = GET_PRIVATE (box);
 
   page_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
-  gtk_notebook_append_page (GTK_NOTEBOOK (private->notebook), page_vbox, NULL);
+  gtk_stack_add_named (GTK_STACK (private->stack), page_vbox,
+                       help_id /* EEK */);
   gtk_widget_show (page_vbox);
 
   scrolled_win = gtk_scrolled_window_new (NULL, NULL);
@@ -384,7 +307,6 @@ gimp_prefs_box_add_page (GimpPrefsBox      *box,
                       COLUMN_PAGE_ICON_SIZE, private->page_icon_size,
                       COLUMN_PAGE_TITLE ,    page_title,
                       COLUMN_PAGE_HELP_ID,   help_id,
-                      COLUMN_PAGE_INDEX,     private->page_index++,
                       -1);
 
   return vbox;
@@ -460,7 +382,7 @@ gimp_prefs_box_set_page_scrollable (GimpPrefsBox *box,
   scrolled_win = gtk_widget_get_ancestor (page, GTK_TYPE_SCROLLED_WINDOW);
   page_vbox = gtk_widget_get_parent (scrolled_win);
 
-  g_return_if_fail (gtk_widget_get_parent (page_vbox) == private->notebook);
+  g_return_if_fail (gtk_widget_get_parent (page_vbox) == private->stack);
 
   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
                                   GTK_POLICY_NEVER,
@@ -488,7 +410,7 @@ gimp_prefs_box_set_page_resettable (GimpPrefsBox *box,
   scrolled_win = gtk_widget_get_ancestor (page, GTK_TYPE_SCROLLED_WINDOW);
   page_vbox = gtk_widget_get_parent (scrolled_win);
 
-  g_return_val_if_fail (gtk_widget_get_parent (page_vbox) == private->notebook,
+  g_return_val_if_fail (gtk_widget_get_parent (page_vbox) == private->stack,
                         NULL);
 
   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);