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9da7cc776c
It's just a treestore going crazy while the treeview has to keep up.
202 lines
5.3 KiB
C
202 lines
5.3 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, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "prop-editor.h"
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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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delete (GtkTreeView *treeview)
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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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GtkTreeIter iter, next;
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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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next = iter;
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if (!gtk_tree_model_iter_children (model, &iter, &next) &&
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!gtk_tree_model_iter_next (model, &next) &&
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!gtk_tree_model_iter_parent (model, &next, &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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iter = next;
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}
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n_rows -= count_children (model, &iter) + 1;
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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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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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NULL,
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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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}
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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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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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};
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funcs[g_random_int_range (0, G_N_ELEMENTS(funcs))] (treeview);
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return TRUE;
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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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gtk_init (&argc, &argv);
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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 (GTK_WINDOW_TOPLEVEL);
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g_signal_connect (window, "destroy", G_CALLBACK (gtk_main_quit), NULL);
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gtk_window_set_default_size (GTK_WINDOW (window), 430, 400);
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sw = gtk_scrolled_window_new (NULL, NULL);
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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_container_add (GTK_CONTAINER (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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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_container_add (GTK_CONTAINER (sw), treeview);
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create_prop_editor (G_OBJECT (treeview), GTK_TYPE_TREE_VIEW);
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create_prop_editor (G_OBJECT (gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview))), GTK_TYPE_TREE_SELECTION);
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gtk_widget_show_all (window);
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g_timeout_add (50, dance, treeview);
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gtk_main ();
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return 0;
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}
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