Tree widget implementation by Bolliet Jerome.
There is also another tree widget implementation by AOSASA Shigeru <aozasa@sakuranet.or.jp>: ftp://ftp.gimp.org/pub/gtk/contrib/gtk-shige-971216-0.tar.gz -Shawn
This commit is contained in:
Shawn Amundson
231
gtk/testtree.c
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231
gtk/testtree.c
Normal file
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#include "gtk.h"
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typedef struct sTreeButtons {
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GtkWidget *button_add, *button_remove;
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} sTreeButton;
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static gint cb_delete_event() {
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return TRUE;
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}
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static void cb_destroy_event() {
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gtk_main_quit();
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}
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static void cb_tree_changed(GtkTree* tree) {
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sTreeButton* tree_buttons;
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GList* selected;
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gint nb_selected;
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tree_buttons = gtk_object_get_user_data(GTK_OBJECT(tree));
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selected = tree->selection;
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nb_selected = g_list_length(selected);
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if(nb_selected == 0) {
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if(tree->children == NULL)
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gtk_widget_set_sensitive(tree_buttons->button_add, TRUE);
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else
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gtk_widget_set_sensitive(tree_buttons->button_add, FALSE);
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gtk_widget_set_sensitive(tree_buttons->button_remove, FALSE);
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} else {
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gtk_widget_set_sensitive(tree_buttons->button_remove, TRUE);
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gtk_widget_set_sensitive(tree_buttons->button_add, (nb_selected == 1));
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}
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}
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static void add_tree_item(GtkWidget* w, GtkTree* tree) {
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static gint nb_item_add = 0;
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GList* selected;
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gint nb_selected;
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GtkTreeItem *selected_item;
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GtkWidget* new_item;
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GtkWidget* subtree;
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gchar buffer[255];
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selected = GTK_TREE_SELECTION(tree);
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nb_selected = g_list_length(selected);
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if(nb_selected > 1) return;
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if(nb_selected == 0 && tree->children != NULL) return;
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if(tree->children == NULL) {
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subtree = GTK_WIDGET(tree);
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} else {
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selected_item = GTK_TREE_ITEM(selected->data);
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subtree = GTK_TREE_ITEM_SUBTREE(selected_item);
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}
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if(!subtree) { /* create a new subtree if not exist */
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subtree = gtk_tree_new();
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gtk_signal_connect(GTK_OBJECT(subtree), "selection_changed",
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(GtkSignalFunc)cb_tree_changed,
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(gpointer)NULL);
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gtk_tree_item_set_subtree(GTK_TREE_ITEM(selected_item), subtree);
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}
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/* create a new item */
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sprintf(buffer, "new item %d", nb_item_add++);
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new_item = gtk_tree_item_new_with_label(buffer);
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gtk_tree_append(GTK_TREE(subtree), new_item);
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gtk_widget_show(new_item);
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}
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static void remove_tree_item(GtkWidget* w, GtkTree* tree) {
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GList* selected, *clear_list;
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GtkTree* root_tree;
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root_tree = GTK_TREE_ROOT_TREE(tree);
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selected = GTK_TREE_SELECTION(tree);
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clear_list = NULL;
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while (selected) {
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clear_list = g_list_prepend (clear_list, selected->data);
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selected = selected->next;
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}
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if(clear_list) {
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clear_list = g_list_reverse (clear_list);
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gtk_tree_remove_items(root_tree, clear_list);
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selected = clear_list;
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while (selected) {
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gtk_widget_destroy (GTK_WIDGET (selected->data));
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selected = selected->next;
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}
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g_list_free (clear_list);
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}
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}
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void create_tree_item(GtkWidget* parent, int level, int nb_item, int level_max) {
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int i;
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char buffer[255];
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GtkWidget *item, *tree;
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for(i = 0; i<nb_item; i++) {
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sprintf(buffer, "item %d-%d", level, i);
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item = gtk_tree_item_new_with_label(buffer);
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gtk_tree_append(GTK_TREE(parent), item);
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gtk_widget_show(item);
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/* g_print("item '%s' : 0x%x\n", buffer, (int)item); */
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if(level < level_max) {
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tree = gtk_tree_new();
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/* g_print("subtree '%s' : 0x%x\n", buffer, (int)tree); */
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gtk_signal_connect(GTK_OBJECT(tree), "selection_changed",
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(GtkSignalFunc)cb_tree_changed,
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(gpointer)NULL);
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create_tree_item(tree, level+1, nb_item, level_max);
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gtk_tree_item_set_subtree(GTK_TREE_ITEM(item), tree);
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/* gtk_tree_item_expand(GTK_TREE_ITEM(item)); */
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}
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}
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}
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void create_tree_page(GtkWidget* parent, GtkSelectionMode mode,
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char* page_name) {
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GtkWidget *root, *scrolled_win;
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GtkWidget *box, *label;
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GtkWidget *button;
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sTreeButton* tree_buttons;
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/* create notebook page */
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box = gtk_vbox_new(FALSE, 5);
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gtk_container_border_width (GTK_CONTAINER (box), 5);
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gtk_widget_show (box);
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label = gtk_label_new(page_name);
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gtk_notebook_append_page(GTK_NOTEBOOK(parent), box, label);
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scrolled_win = gtk_scrolled_window_new (NULL, NULL);
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
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GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
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gtk_box_pack_start (GTK_BOX (box), scrolled_win, TRUE, TRUE, 0);
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gtk_widget_set_usize (scrolled_win, 200, 200);
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gtk_widget_show (scrolled_win);
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root = gtk_tree_new();
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/* g_print("root: 0x%x\n", (int)root); */
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gtk_container_add(GTK_CONTAINER(scrolled_win), root);
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gtk_tree_set_selection_mode(GTK_TREE(root), mode);
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/* gtk_tree_set_view_mode(GTK_TREE(root), GTK_TREE_VIEW_ITEM); */
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gtk_signal_connect(GTK_OBJECT(root), "selection_changed",
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(GtkSignalFunc)cb_tree_changed,
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(gpointer)NULL);
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gtk_widget_show(root);
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create_tree_item(root, 1, 3, 3);
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tree_buttons = g_malloc(sizeof(sTreeButton));
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button = gtk_button_new_with_label("Add");
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gtk_box_pack_start(GTK_BOX (box), button, TRUE, TRUE, 0);
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gtk_signal_connect(GTK_OBJECT(button), "clicked",
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(GtkSignalFunc)add_tree_item,
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(gpointer)root);
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gtk_widget_set_sensitive(button, FALSE);
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gtk_widget_show(button);
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tree_buttons->button_add = button;
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button = gtk_button_new_with_label("Remove");
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gtk_box_pack_start(GTK_BOX (box), button, TRUE, TRUE, 0);
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gtk_signal_connect(GTK_OBJECT(button), "clicked",
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(GtkSignalFunc)remove_tree_item,
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(gpointer)root);
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gtk_widget_set_sensitive(button, FALSE);
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gtk_widget_show(button);
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tree_buttons->button_remove = button;
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gtk_object_set_user_data(GTK_OBJECT(root), (gpointer)tree_buttons);
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}
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void main(int argc, char** argv) {
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GtkWidget* window, *notebook;
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GtkWidget* box1;
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GtkWidget* separator;
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GtkWidget* button;
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gtk_init (&argc, &argv);
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window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
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gtk_window_set_title(GTK_WINDOW(window), "Test Tree");
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gtk_signal_connect (GTK_OBJECT (window), "delete_event",
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(GtkSignalFunc) cb_delete_event, NULL);
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gtk_signal_connect (GTK_OBJECT (window), "destroy",
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(GtkSignalFunc) cb_destroy_event, NULL);
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box1 = gtk_vbox_new(FALSE, 0);
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gtk_container_add(GTK_CONTAINER(window), box1);
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gtk_widget_show(box1);
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/* create notebook */
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notebook = gtk_notebook_new ();
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gtk_notebook_set_tab_pos (GTK_NOTEBOOK (notebook), GTK_POS_TOP);
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gtk_box_pack_start (GTK_BOX (box1), notebook, TRUE, TRUE, 0);
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gtk_widget_show (notebook);
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/* create unique selection page */
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create_tree_page(notebook, GTK_SELECTION_SINGLE, "Single");
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create_tree_page(notebook, GTK_SELECTION_BROWSE, "Browse");
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create_tree_page(notebook, GTK_SELECTION_MULTIPLE, "Multiple");
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separator = gtk_hseparator_new();
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gtk_box_pack_start(GTK_BOX (box1), separator, TRUE, TRUE, 0);
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gtk_widget_show (separator);
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button = gtk_button_new_with_label("Close");
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gtk_box_pack_start(GTK_BOX (box1), button, TRUE, TRUE, 0);
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gtk_signal_connect_object(GTK_OBJECT(button), "clicked",
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(GtkSignalFunc)gtk_widget_destroy,
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GTK_OBJECT(window));
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gtk_widget_show(button);
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gtk_widget_show(window);
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gtk_main();
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}
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