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_with_mnemonic (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_label_set_mnemonic_widget (GTK_LABEL (label), option_menu);
64 gtk_size_group_add_widget (size_group, option_menu);
65 gtk_table_attach (GTK_TABLE (table), option_menu,
72 toggle_grouping (GtkToggleButton *check_button,
73 GtkSizeGroup *size_group)
75 GtkSizeGroupMode new_mode;
77 /* GTK_SIZE_GROUP_NONE is not generally useful, but is useful
78 * here to show the effect of GTK_SIZE_GROUP_HORIZONTAL by
81 if (gtk_toggle_button_get_active (check_button))
82 new_mode = GTK_SIZE_GROUP_HORIZONTAL;
84 new_mode = GTK_SIZE_GROUP_NONE;
86 gtk_size_group_set_mode (size_group, new_mode);
95 GtkWidget *check_button;
96 GtkSizeGroup *size_group;
98 static const char *color_options[] = {
99 "Red", "Green", "Blue", NULL
102 static const char *dash_options[] = {
103 "Solid", "Dashed", "Dotted", NULL
106 static const char *end_options[] = {
107 "Square", "Round", "Arrow", NULL
112 window = gtk_dialog_new_with_buttons ("GtkSizeGroup",
117 gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
119 gtk_signal_connect (GTK_OBJECT (window), "response",
120 GTK_SIGNAL_FUNC (gtk_widget_destroy), NULL);
121 gtk_signal_connect (GTK_OBJECT (window), "destroy",
122 GTK_SIGNAL_FUNC (gtk_widget_destroyed), &window);
124 vbox = gtk_vbox_new (FALSE, 5);
125 gtk_box_pack_start (GTK_BOX (GTK_DIALOG (window)->vbox), vbox, TRUE, TRUE, 0);
126 gtk_container_set_border_width (GTK_CONTAINER (vbox), 5);
128 size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
130 /* Create one frame holding color options
132 frame = gtk_frame_new ("Color Options");
133 gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE, 0);
135 table = gtk_table_new (2, 2, FALSE);
136 gtk_container_set_border_width (GTK_CONTAINER (table), 5);
137 gtk_table_set_row_spacings (GTK_TABLE (table), 5);
138 gtk_table_set_col_spacings (GTK_TABLE (table), 10);
139 gtk_container_add (GTK_CONTAINER (frame), table);
141 add_row (GTK_TABLE (table), 0, size_group, "_Foreground", color_options);
142 add_row (GTK_TABLE (table), 1, size_group, "_Background", color_options);
144 /* And another frame holding line style options
146 frame = gtk_frame_new ("Line Options");
147 gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
149 table = gtk_table_new (2, 2, FALSE);
150 gtk_container_set_border_width (GTK_CONTAINER (table), 5);
151 gtk_table_set_row_spacings (GTK_TABLE (table), 5);
152 gtk_table_set_col_spacings (GTK_TABLE (table), 10);
153 gtk_container_add (GTK_CONTAINER (frame), table);
155 add_row (GTK_TABLE (table), 0, size_group, "_Dashing", dash_options);
156 add_row (GTK_TABLE (table), 1, size_group, "_Line ends", end_options);
158 /* And a check button to turn grouping on and off */
159 check_button = gtk_check_button_new_with_mnemonic ("_Enable grouping");
160 gtk_box_pack_start (GTK_BOX (vbox), check_button, FALSE, FALSE, 0);
162 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check_button), TRUE);
163 gtk_signal_connect (GTK_OBJECT (check_button), "toggled",
164 GTK_SIGNAL_FUNC (toggle_grouping), size_group);
167 if (!GTK_WIDGET_VISIBLE (window))
168 gtk_widget_show_all (window);
170 gtk_widget_destroy (window);