3 * GtkSizeGroup provides a mechanism for grouping a number of
4 * widgets together so they all request the same amount of space.
5 * This is typically useful when you want a column of widgets to
6 * have the same size, but you can't use a GtkTable widget.
8 * Note that size groups only affect the amount of space requested,
9 * not the size that the widgets finally receive. If you want the
10 * widgets in a GtkSizeGroup to actually be the same size, you need
11 * to pack them in such a way that they get the size they request
12 * and not more. For example, if you are packing your widgets
13 * into a table, you would not include the GTK_FILL flag.
18 static GtkWidget *window = NULL;
20 /* Convenience function to create an option menu holding a number of strings
23 create_option_menu (const char **strings)
26 GtkWidget *option_menu;
29 menu = gtk_menu_new ();
31 for (str = strings; *str; str++)
33 GtkWidget *menu_item = gtk_menu_item_new_with_label (*str);
34 gtk_widget_show (menu_item);
36 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_item);
39 option_menu = gtk_option_menu_new ();
40 gtk_option_menu_set_menu (GTK_OPTION_MENU (option_menu), menu);
46 add_row (GtkTable *table,
48 GtkSizeGroup *size_group,
49 const char *label_text,
52 GtkWidget *option_menu;
55 label = gtk_label_new (label_text);
56 gtk_misc_set_alignment (GTK_MISC (label), 0, 1);
57 gtk_table_attach (GTK_TABLE (table), label,
59 GTK_EXPAND | GTK_FILL, 0,
62 option_menu = create_option_menu (options);
63 gtk_size_group_add_widget (size_group, option_menu);
64 gtk_table_attach (GTK_TABLE (table), option_menu,
71 toggle_grouping (GtkToggleButton *check_button,
72 GtkSizeGroup *size_group)
74 GtkSizeGroupMode new_mode;
76 /* GTK_SIZE_GROUP_NONE is not generally useful, but is useful
77 * here to show the effect of GTK_SIZE_GROUP_HORIZONTAL by
80 if (gtk_toggle_button_get_active (check_button))
81 new_mode = GTK_SIZE_GROUP_HORIZONTAL;
83 new_mode = GTK_SIZE_GROUP_NONE;
85 gtk_size_group_set_mode (size_group, new_mode);
94 GtkWidget *check_button;
95 GtkSizeGroup *size_group;
97 static const char *color_options[] = {
98 "Red", "Green", "Blue", NULL
101 static const char *dash_options[] = {
102 "Solid", "Dashed", "Dotted", NULL
105 static const char *end_options[] = {
106 "Square", "Round", "Arrow", NULL
111 window = gtk_dialog_new_with_buttons ("GtkSizeGroup",
116 gtk_window_set_resizeable (GTK_WINDOW (window), FALSE);
118 gtk_signal_connect (GTK_OBJECT (window), "response",
119 GTK_SIGNAL_FUNC (gtk_widget_destroy), NULL);
120 gtk_signal_connect (GTK_OBJECT (window), "destroy",
121 GTK_SIGNAL_FUNC (gtk_widget_destroyed), &window);
123 vbox = gtk_vbox_new (FALSE, 5);
124 gtk_box_pack_start (GTK_BOX (GTK_DIALOG (window)->vbox), vbox, TRUE, TRUE, 0);
125 gtk_container_set_border_width (GTK_CONTAINER (vbox), 5);
127 size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
129 /* Create one frame holding color options
131 frame = gtk_frame_new ("Color Options");
132 gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE, 0);
134 table = gtk_table_new (2, 2, FALSE);
135 gtk_container_set_border_width (GTK_CONTAINER (table), 5);
136 gtk_table_set_row_spacings (GTK_TABLE (table), 5);
137 gtk_table_set_col_spacings (GTK_TABLE (table), 10);
138 gtk_container_add (GTK_CONTAINER (frame), table);
140 add_row (GTK_TABLE (table), 0, size_group, "Foreground", color_options);
141 add_row (GTK_TABLE (table), 1, size_group, "Background", color_options);
143 /* And another frame holding line style options
145 frame = gtk_frame_new ("Line Options");
146 gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
148 table = gtk_table_new (2, 2, FALSE);
149 gtk_container_set_border_width (GTK_CONTAINER (table), 5);
150 gtk_table_set_row_spacings (GTK_TABLE (table), 5);
151 gtk_table_set_col_spacings (GTK_TABLE (table), 10);
152 gtk_container_add (GTK_CONTAINER (frame), table);
154 add_row (GTK_TABLE (table), 0, size_group, "Dashing", dash_options);
155 add_row (GTK_TABLE (table), 1, size_group, "Line ends", end_options);
157 /* And a check button to turn grouping on and off */
158 check_button = gtk_check_button_new_with_label ("Enable grouping");
159 gtk_box_pack_start (GTK_BOX (vbox), check_button, FALSE, FALSE, 0);
161 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check_button), TRUE);
162 gtk_signal_connect (GTK_OBJECT (check_button), "toggled",
163 GTK_SIGNAL_FUNC (toggle_grouping), size_group);
166 if (!GTK_WIDGET_VISIBLE (window))
167 gtk_widget_show_all (window);
169 gtk_widget_destroy (window);