/usr/share/gtk-3.0/demo/sizegroup.c is in gtk-3-examples 3.4.2-0ubuntu0.9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 | /* Size Groups
*
* GtkSizeGroup provides a mechanism for grouping a number of
* widgets together so they all request the same amount of space.
* This is typically useful when you want a column of widgets to
* have the same size, but you can't use a GtkTable widget.
*
* Note that size groups only affect the amount of space requested,
* not the size that the widgets finally receive. If you want the
* widgets in a GtkSizeGroup to actually be the same size, you need
* to pack them in such a way that they get the size they request
* and not more. For example, if you are packing your widgets
* into a table, you would not include the GTK_FILL flag.
*/
#include <gtk/gtk.h>
static GtkWidget *window = NULL;
/* Convenience function to create a combo box holding a number of strings
*/
GtkWidget *
create_combo_box (const char **strings)
{
GtkWidget *combo_box;
const char **str;
combo_box = gtk_combo_box_text_new ();
for (str = strings; *str; str++)
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo_box), *str);
gtk_combo_box_set_active (GTK_COMBO_BOX (combo_box), 0);
return combo_box;
}
static void
add_row (GtkGrid *table,
int row,
GtkSizeGroup *size_group,
const char *label_text,
const char **options)
{
GtkWidget *combo_box;
GtkWidget *label;
label = gtk_label_new_with_mnemonic (label_text);
gtk_widget_set_halign (label, GTK_ALIGN_START);
gtk_widget_set_valign (label, GTK_ALIGN_END);
gtk_widget_set_hexpand (label, TRUE);
gtk_grid_attach (table, label, 0, row, 1, 1);
combo_box = create_combo_box (options);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), combo_box);
gtk_size_group_add_widget (size_group, combo_box);
gtk_grid_attach (table, combo_box, 1, row, 1, 1);
}
static void
toggle_grouping (GtkToggleButton *check_button,
GtkSizeGroup *size_group)
{
GtkSizeGroupMode new_mode;
/* GTK_SIZE_GROUP_NONE is not generally useful, but is useful
* here to show the effect of GTK_SIZE_GROUP_HORIZONTAL by
* contrast.
*/
if (gtk_toggle_button_get_active (check_button))
new_mode = GTK_SIZE_GROUP_HORIZONTAL;
else
new_mode = GTK_SIZE_GROUP_NONE;
gtk_size_group_set_mode (size_group, new_mode);
}
GtkWidget *
do_sizegroup (GtkWidget *do_widget)
{
GtkWidget *content_area;
GtkWidget *table;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *check_button;
GtkSizeGroup *size_group;
static const char *color_options[] = {
"Red", "Green", "Blue", NULL
};
static const char *dash_options[] = {
"Solid", "Dashed", "Dotted", NULL
};
static const char *end_options[] = {
"Square", "Round", "Arrow", NULL
};
if (!window)
{
window = gtk_dialog_new_with_buttons ("GtkSizeGroup",
GTK_WINDOW (do_widget),
0,
GTK_STOCK_CLOSE,
GTK_RESPONSE_NONE,
NULL);
gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
g_signal_connect (window, "response",
G_CALLBACK (gtk_widget_destroy), NULL);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
content_area = gtk_dialog_get_content_area (GTK_DIALOG (window));
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 5);
gtk_box_pack_start (GTK_BOX (content_area), vbox, TRUE, TRUE, 0);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 5);
size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
/* Create one frame holding color options */
frame = gtk_frame_new ("Color Options");
gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE, 0);
table = gtk_grid_new ();
gtk_container_set_border_width (GTK_CONTAINER (table), 5);
gtk_grid_set_row_spacing (GTK_GRID (table), 5);
gtk_grid_set_column_spacing (GTK_GRID (table), 10);
gtk_container_add (GTK_CONTAINER (frame), table);
add_row (GTK_GRID (table), 0, size_group, "_Foreground", color_options);
add_row (GTK_GRID (table), 1, size_group, "_Background", color_options);
/* And another frame holding line style options */
frame = gtk_frame_new ("Line Options");
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
table = gtk_grid_new ();
gtk_container_set_border_width (GTK_CONTAINER (table), 5);
gtk_grid_set_row_spacing (GTK_GRID (table), 5);
gtk_grid_set_column_spacing (GTK_GRID (table), 10);
gtk_container_add (GTK_CONTAINER (frame), table);
add_row (GTK_GRID (table), 0, size_group, "_Dashing", dash_options);
add_row (GTK_GRID (table), 1, size_group, "_Line ends", end_options);
/* And a check button to turn grouping on and off */
check_button = gtk_check_button_new_with_mnemonic ("_Enable grouping");
gtk_box_pack_start (GTK_BOX (vbox), check_button, FALSE, FALSE, 0);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check_button), TRUE);
g_signal_connect (check_button, "toggled",
G_CALLBACK (toggle_grouping), size_group);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show_all (window);
else
gtk_widget_destroy (window);
return window;
}
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