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https://gitlab.gnome.org/GNOME/gtk.git
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386b63b85d
In 99.9% of all cases, these are just NULL, NULL. So just do away with these arguments, people can use the setters for the rare cases where they want the scrolled window to use a different adjustment.
530 lines
13 KiB
C
530 lines
13 KiB
C
/* testtreeview.c
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* Copyright (C) 2011 Red Hat, Inc
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* Author: Benjamin Otte <otte@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <gtk/gtk.h>
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#define MIN_ROWS 50
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#define MAX_ROWS 150
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typedef void (* DoStuffFunc) (GtkTreeView *treeview);
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static guint
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count_children (GtkTreeModel *model,
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GtkTreeIter *parent)
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{
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GtkTreeIter iter;
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guint count = 0;
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gboolean valid;
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for (valid = gtk_tree_model_iter_children (model, &iter, parent);
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valid;
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valid = gtk_tree_model_iter_next (model, &iter))
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{
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count += count_children (model, &iter) + 1;
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}
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return count;
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}
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static void
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set_rows (GtkTreeView *treeview, guint i)
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{
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g_assert (i == count_children (gtk_tree_view_get_model (treeview), NULL));
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g_object_set_data (G_OBJECT (treeview), "rows", GUINT_TO_POINTER (i));
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}
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static guint
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get_rows (GtkTreeView *treeview)
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{
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return GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (treeview), "rows"));
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}
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static void
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log_operation_for_path (GtkTreePath *path,
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const char *operation_name)
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{
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char *path_string;
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path_string = path ? gtk_tree_path_to_string (path) : g_strdup ("");
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g_printerr ("%10s %s\n", operation_name, path_string);
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g_free (path_string);
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}
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static void
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log_operation (GtkTreeModel *model,
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GtkTreeIter *iter,
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const char *operation_name)
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{
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GtkTreePath *path;
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path = gtk_tree_model_get_path (model, iter);
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log_operation_for_path (path, operation_name);
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gtk_tree_path_free (path);
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}
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/* moves iter to the next iter in the model in the display order
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* inside a treeview. Returns FALSE if no more rows exist.
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*/
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static gboolean
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tree_model_iter_step (GtkTreeModel *model,
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GtkTreeIter *iter)
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{
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GtkTreeIter tmp;
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if (gtk_tree_model_iter_children (model, &tmp, iter))
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{
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*iter = tmp;
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return TRUE;
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}
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do {
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tmp = *iter;
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if (gtk_tree_model_iter_next (model, iter))
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return TRUE;
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}
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while (gtk_tree_model_iter_parent (model, iter, &tmp));
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return FALSE;
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}
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/* NB: may include invisible iters (because they are collapsed) */
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static void
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tree_view_random_iter (GtkTreeView *treeview,
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GtkTreeIter *iter)
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{
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guint n_rows = get_rows (treeview);
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guint i = g_random_int_range (0, n_rows);
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GtkTreeModel *model;
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model = gtk_tree_view_get_model (treeview);
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if (!gtk_tree_model_get_iter_first (model, iter))
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return;
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while (i-- > 0)
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{
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if (!tree_model_iter_step (model, iter))
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{
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g_assert_not_reached ();
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return;
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}
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}
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return;
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}
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static void
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delete (GtkTreeView *treeview)
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{
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guint n_rows = get_rows (treeview);
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GtkTreeModel *model;
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GtkTreeIter iter;
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model = gtk_tree_view_get_model (treeview);
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tree_view_random_iter (treeview, &iter);
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n_rows -= count_children (model, &iter) + 1;
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log_operation (model, &iter, "remove");
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gtk_tree_store_remove (GTK_TREE_STORE (model), &iter);
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set_rows (treeview, n_rows);
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}
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static void
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add_one (GtkTreeModel *model,
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GtkTreeIter *iter)
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{
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guint n = gtk_tree_model_iter_n_children (model, iter);
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GtkTreeIter new_iter;
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static guint counter = 0;
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if (n > 0 && g_random_boolean ())
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{
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GtkTreeIter child;
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gtk_tree_model_iter_nth_child (model, &child, iter, g_random_int_range (0, n));
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add_one (model, &child);
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return;
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}
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gtk_tree_store_insert_with_values (GTK_TREE_STORE (model),
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&new_iter,
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iter,
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g_random_int_range (-1, n),
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0, ++counter,
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-1);
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log_operation (model, &new_iter, "add");
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}
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static void
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add (GtkTreeView *treeview)
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{
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GtkTreeModel *model;
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model = gtk_tree_view_get_model (treeview);
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add_one (model, NULL);
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set_rows (treeview, get_rows (treeview) + 1);
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}
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static void
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add_or_delete (GtkTreeView *treeview)
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{
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guint n_rows = get_rows (treeview);
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if (g_random_int_range (MIN_ROWS, MAX_ROWS) >= n_rows)
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add (treeview);
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else
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delete (treeview);
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}
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/* XXX: We only expand/collapse from the top and not randomly */
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static void
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expand (GtkTreeView *treeview)
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{
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GtkTreeModel *model;
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GtkTreeIter iter;
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GtkTreePath *path;
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gboolean valid;
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model = gtk_tree_view_get_model (treeview);
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for (valid = gtk_tree_model_get_iter_first (model, &iter);
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valid;
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valid = tree_model_iter_step (model, &iter))
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{
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if (gtk_tree_model_iter_has_child (model, &iter))
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{
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path = gtk_tree_model_get_path (model, &iter);
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if (!gtk_tree_view_row_expanded (treeview, path))
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{
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log_operation (model, &iter, "expand");
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gtk_tree_view_expand_row (treeview, path, FALSE);
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gtk_tree_path_free (path);
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return;
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}
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gtk_tree_path_free (path);
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}
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}
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}
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static void
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collapse (GtkTreeView *treeview)
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{
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GtkTreeModel *model;
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GtkTreeIter iter;
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GtkTreePath *last, *path;
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gboolean valid;
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model = gtk_tree_view_get_model (treeview);
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last = NULL;
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for (valid = gtk_tree_model_get_iter_first (model, &iter);
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valid;
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valid = tree_model_iter_step (model, &iter))
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{
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path = gtk_tree_model_get_path (model, &iter);
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if (gtk_tree_view_row_expanded (treeview, path))
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{
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if (last)
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gtk_tree_path_free (last);
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last = path;
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}
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else
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gtk_tree_path_free (path);
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}
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if (last)
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{
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log_operation_for_path (last, "collapse");
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gtk_tree_view_collapse_row (treeview, last);
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gtk_tree_path_free (last);
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}
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}
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static void
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select_ (GtkTreeView *treeview)
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{
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GtkTreeIter iter;
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tree_view_random_iter (treeview, &iter);
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log_operation (gtk_tree_view_get_model (treeview), &iter, "select");
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gtk_tree_selection_select_iter (gtk_tree_view_get_selection (treeview),
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&iter);
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}
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static void
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unselect (GtkTreeView *treeview)
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{
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GtkTreeIter iter;
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tree_view_random_iter (treeview, &iter);
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log_operation (gtk_tree_view_get_model (treeview), &iter, "unselect");
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gtk_tree_selection_unselect_iter (gtk_tree_view_get_selection (treeview),
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&iter);
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}
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static void
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reset_model (GtkTreeView *treeview)
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{
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GtkTreeSelection *selection;
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GtkTreeModel *model;
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GList *list, *selected;
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GtkTreePath *cursor;
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selection = gtk_tree_view_get_selection (treeview);
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model = g_object_ref (gtk_tree_view_get_model (treeview));
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log_operation_for_path (NULL, "reset");
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selected = gtk_tree_selection_get_selected_rows (selection, NULL);
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gtk_tree_view_get_cursor (treeview, &cursor, NULL);
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gtk_tree_view_set_model (treeview, NULL);
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gtk_tree_view_set_model (treeview, model);
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if (cursor)
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{
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gtk_tree_view_set_cursor (treeview, cursor, NULL, FALSE);
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gtk_tree_path_free (cursor);
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}
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for (list = selected; list; list = list->next)
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{
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gtk_tree_selection_select_path (selection, list->data);
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}
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g_list_free_full (selected, (GDestroyNotify) gtk_tree_path_free);
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g_object_unref (model);
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}
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/* sanity checks */
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static void
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assert_row_reference_is_path (GtkTreeRowReference *ref,
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GtkTreePath *path)
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{
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GtkTreePath *expected;
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if (ref == NULL)
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{
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g_assert (path == NULL);
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return;
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}
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g_assert (path != NULL);
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g_assert (gtk_tree_row_reference_valid (ref));
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expected = gtk_tree_row_reference_get_path (ref);
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g_assert (expected != NULL);
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g_assert (gtk_tree_path_compare (expected, path) == 0);
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gtk_tree_path_free (expected);
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}
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static void
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check_cursor (GtkTreeView *treeview)
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{
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GtkTreeRowReference *ref = g_object_get_data (G_OBJECT (treeview), "cursor");
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GtkTreePath *cursor;
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gtk_tree_view_get_cursor (treeview, &cursor, NULL);
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assert_row_reference_is_path (ref, cursor);
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if (cursor)
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gtk_tree_path_free (cursor);
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}
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static void
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check_selection_item (GtkTreeModel *model,
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GtkTreePath *path,
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GtkTreeIter *iter,
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gpointer listp)
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{
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GList **list = listp;
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g_assert (*list);
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assert_row_reference_is_path ((*list)->data, path);
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*list = (*list)->next;
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}
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static void
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check_selection (GtkTreeView *treeview)
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{
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GList *selection = g_object_get_data (G_OBJECT (treeview), "selection");
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gtk_tree_selection_selected_foreach (gtk_tree_view_get_selection (treeview),
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check_selection_item,
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&selection);
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}
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static void
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check_sanity (GtkTreeView *treeview)
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{
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check_cursor (treeview);
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check_selection (treeview);
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}
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static gboolean
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dance (gpointer treeview)
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{
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static const DoStuffFunc funcs[] = {
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add_or_delete,
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add_or_delete,
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expand,
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collapse,
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select_,
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unselect,
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reset_model
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};
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guint i;
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i = g_random_int_range (0, G_N_ELEMENTS(funcs));
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funcs[i] (treeview);
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check_sanity (treeview);
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return G_SOURCE_CONTINUE;
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}
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static void
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cursor_changed_cb (GtkTreeView *treeview,
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gpointer unused)
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{
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GtkTreePath *path;
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GtkTreeRowReference *ref;
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gtk_tree_view_get_cursor (treeview, &path, NULL);
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if (path)
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{
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ref = gtk_tree_row_reference_new (gtk_tree_view_get_model (treeview),
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path);
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gtk_tree_path_free (path);
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}
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else
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ref = NULL;
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g_object_set_data_full (G_OBJECT (treeview), "cursor", ref, (GDestroyNotify) gtk_tree_row_reference_free);
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}
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static void
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selection_list_free (gpointer list)
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{
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g_list_free_full (list, (GDestroyNotify) gtk_tree_row_reference_free);
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}
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static void
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selection_changed_cb (GtkTreeSelection *tree_selection,
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gpointer unused)
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{
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GList *selected, *list;
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GtkTreeModel *model;
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selected = gtk_tree_selection_get_selected_rows (tree_selection, &model);
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for (list = selected; list; list = list->next)
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{
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GtkTreePath *path = list->data;
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list->data = gtk_tree_row_reference_new (model, path);
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gtk_tree_path_free (path);
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}
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g_object_set_data_full (G_OBJECT (gtk_tree_selection_get_tree_view (tree_selection)),
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"selection",
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selected,
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selection_list_free);
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}
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static void
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setup_sanity_checks (GtkTreeView *treeview)
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{
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g_signal_connect (treeview, "cursor-changed", G_CALLBACK (cursor_changed_cb), NULL);
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cursor_changed_cb (treeview, NULL);
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g_signal_connect (gtk_tree_view_get_selection (treeview), "changed", G_CALLBACK (selection_changed_cb), NULL);
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selection_changed_cb (gtk_tree_view_get_selection (treeview), NULL);
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}
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static void
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quit_cb (GtkWidget *widget,
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gpointer data)
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{
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gboolean *done = data;
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*done = TRUE;
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g_main_context_wakeup (NULL);
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}
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int
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main (int argc,
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char **argv)
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{
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GtkWidget *window;
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GtkWidget *sw;
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GtkWidget *treeview;
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GtkTreeModel *model;
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guint i;
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gboolean done = FALSE;
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gtk_init ();
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if (g_getenv ("RTL"))
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gtk_widget_set_default_direction (GTK_TEXT_DIR_RTL);
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window = gtk_window_new ();
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g_signal_connect (window, "destroy", G_CALLBACK (quit_cb), &done);
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gtk_window_set_default_size (GTK_WINDOW (window), 430, 400);
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sw = gtk_scrolled_window_new ();
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gtk_widget_set_hexpand (sw, TRUE);
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gtk_widget_set_vexpand (sw, TRUE);
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
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GTK_POLICY_AUTOMATIC,
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GTK_POLICY_AUTOMATIC);
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gtk_window_set_child (GTK_WINDOW (window), sw);
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model = GTK_TREE_MODEL (gtk_tree_store_new (1, G_TYPE_UINT));
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treeview = gtk_tree_view_new_with_model (model);
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g_object_unref (model);
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setup_sanity_checks (GTK_TREE_VIEW (treeview));
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gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
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0,
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"Counter",
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gtk_cell_renderer_text_new (),
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"text", 0,
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NULL);
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for (i = 0; i < (MIN_ROWS + MAX_ROWS) / 2; i++)
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add (GTK_TREE_VIEW (treeview));
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), treeview);
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gtk_widget_show (window);
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g_idle_add (dance, treeview);
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while (!done)
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g_main_context_iteration (NULL, TRUE);
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return 0;
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}
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