gtk2/demos/gtk-demo/toolpalette.c
Benjamin Otte 3f5178dc21 selection: Remove the info uint
Instead of allowing people to pass a uint user-data, insist on them
comparing mime types.

The user data was a uint instead of a pointer anyway, so uniqueness
could not be guaranteed and it caused more issues than it was worth.
And that's ignoring the fact that it basically wasn't used.
2017-11-16 22:59:43 +01:00

796 lines
26 KiB
C

/* Tool Palette
*
* A tool palette widget shows groups of toolbar items as a grid of icons
* or a list of names.
*/
#include <string.h>
#include <gtk/gtk.h>
static GtkWidget *window = NULL;
static void load_icon_items (GtkToolPalette *palette);
static void load_toggle_items (GtkToolPalette *palette);
static void load_special_items (GtkToolPalette *palette);
typedef struct _CanvasItem CanvasItem;
struct _CanvasItem
{
GdkPixbuf *pixbuf;
gdouble x, y;
};
static gboolean drag_data_requested_for_drop = FALSE;
static CanvasItem *drop_item = NULL;
static GList *canvas_items = NULL;
/********************************/
/* ====== Canvas drawing ====== */
/********************************/
static CanvasItem*
canvas_item_new (GtkWidget *widget,
GtkToolButton *button,
gdouble x,
gdouble y)
{
CanvasItem *item = NULL;
const gchar *icon_name;
GdkPixbuf *pixbuf;
GtkIconTheme *icon_theme;
icon_name = gtk_tool_button_get_icon_name (button);
icon_theme = gtk_icon_theme_get_for_display (gtk_widget_get_display (widget));
pixbuf = gtk_icon_theme_load_icon (icon_theme,
icon_name,
48,
GTK_ICON_LOOKUP_GENERIC_FALLBACK,
NULL);
if (pixbuf)
{
item = g_slice_new0 (CanvasItem);
item->pixbuf = pixbuf;
item->x = x;
item->y = y;
}
return item;
}
static void
canvas_item_free (CanvasItem *item)
{
g_object_unref (item->pixbuf);
g_slice_free (CanvasItem, item);
}
static void
canvas_item_draw (const CanvasItem *item,
cairo_t *cr,
gboolean preview)
{
gdouble cx = gdk_pixbuf_get_width (item->pixbuf);
gdouble cy = gdk_pixbuf_get_height (item->pixbuf);
gdk_cairo_set_source_pixbuf (cr,
item->pixbuf,
item->x - cx * 0.5,
item->y - cy * 0.5);
if (preview)
cairo_paint_with_alpha (cr, 0.6);
else
cairo_paint (cr);
}
static gboolean
canvas_draw (GtkWidget *widget,
cairo_t *cr)
{
GList *iter;
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
for (iter = canvas_items; iter; iter = iter->next)
canvas_item_draw (iter->data, cr, FALSE);
if (drop_item)
canvas_item_draw (drop_item, cr, TRUE);
return TRUE;
}
/*****************************/
/* ====== Palette DnD ====== */
/*****************************/
static void
palette_drop_item (GtkToolItem *drag_item,
GtkToolItemGroup *drop_group,
gint x,
gint y)
{
GtkWidget *drag_group = gtk_widget_get_parent (GTK_WIDGET (drag_item));
GtkToolItem *drop_item = gtk_tool_item_group_get_drop_item (drop_group, x, y);
gint drop_position = -1;
if (drop_item)
drop_position = gtk_tool_item_group_get_item_position (GTK_TOOL_ITEM_GROUP (drop_group), drop_item);
if (GTK_TOOL_ITEM_GROUP (drag_group) != drop_group)
{
gboolean homogeneous, expand, fill, new_row;
g_object_ref (drag_item);
gtk_container_child_get (GTK_CONTAINER (drag_group), GTK_WIDGET (drag_item),
"homogeneous", &homogeneous,
"expand", &expand,
"fill", &fill,
"new-row", &new_row,
NULL);
gtk_container_remove (GTK_CONTAINER (drag_group), GTK_WIDGET (drag_item));
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (drop_group),
drag_item, drop_position);
gtk_container_child_set (GTK_CONTAINER (drop_group), GTK_WIDGET (drag_item),
"homogeneous", homogeneous,
"expand", expand,
"fill", fill,
"new-row", new_row,
NULL);
g_object_unref (drag_item);
}
else
gtk_tool_item_group_set_item_position (GTK_TOOL_ITEM_GROUP (drop_group),
drag_item, drop_position);
}
static void
palette_drop_group (GtkToolPalette *palette,
GtkToolItemGroup *drag_group,
GtkToolItemGroup *drop_group)
{
gint drop_position = -1;
if (drop_group)
drop_position = gtk_tool_palette_get_group_position (palette, drop_group);
gtk_tool_palette_set_group_position (palette, drag_group, drop_position);
}
static void
palette_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection,
guint time,
gpointer data)
{
GtkAllocation allocation;
GtkToolItemGroup *drop_group = NULL;
GtkWidget *drag_palette = gtk_drag_get_source_widget (context);
GtkWidget *drag_item = NULL;
while (drag_palette && !GTK_IS_TOOL_PALETTE (drag_palette))
drag_palette = gtk_widget_get_parent (drag_palette);
if (drag_palette)
{
drag_item = gtk_tool_palette_get_drag_item (GTK_TOOL_PALETTE (drag_palette),
selection);
drop_group = gtk_tool_palette_get_drop_group (GTK_TOOL_PALETTE (widget),
x, y);
}
if (GTK_IS_TOOL_ITEM_GROUP (drag_item))
palette_drop_group (GTK_TOOL_PALETTE (drag_palette),
GTK_TOOL_ITEM_GROUP (drag_item),
drop_group);
else if (GTK_IS_TOOL_ITEM (drag_item) && drop_group)
{
gtk_widget_get_allocation (GTK_WIDGET (drop_group), &allocation);
palette_drop_item (GTK_TOOL_ITEM (drag_item),
drop_group,
x - allocation.x,
y - allocation.y);
}
}
/********************************/
/* ====== Passive Canvas ====== */
/********************************/
static void
passive_canvas_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection,
guint time,
gpointer data)
{
/* find the tool button, which is the source of this DnD operation */
GtkWidget *palette = gtk_drag_get_source_widget (context);
CanvasItem *canvas_item = NULL;
GtkWidget *tool_item = NULL;
while (palette && !GTK_IS_TOOL_PALETTE (palette))
palette = gtk_widget_get_parent (palette);
if (palette)
tool_item = gtk_tool_palette_get_drag_item (GTK_TOOL_PALETTE (palette),
selection);
g_assert (NULL == drop_item);
/* append a new canvas item when a tool button was found */
if (GTK_IS_TOOL_ITEM (tool_item))
canvas_item = canvas_item_new (widget, GTK_TOOL_BUTTON (tool_item), x, y);
if (canvas_item)
{
canvas_items = g_list_append (canvas_items, canvas_item);
gtk_widget_queue_draw (widget);
}
}
/************************************/
/* ====== Interactive Canvas ====== */
/************************************/
static gboolean
interactive_canvas_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time,
gpointer data)
{
if (drop_item)
{
/* already have a drop indicator - just update position */
drop_item->x = x;
drop_item->y = y;
gtk_widget_queue_draw (widget);
gdk_drag_status (context, GDK_ACTION_COPY, time);
}
else
{
/* request DnD data for creating a drop indicator */
GdkAtom target = gtk_drag_dest_find_target (widget, context, NULL);
if (!target)
return FALSE;
drag_data_requested_for_drop = FALSE;
gtk_drag_get_data (widget, context, target, time);
}
return TRUE;
}
static void
interactive_canvas_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection,
guint time,
gpointer data)
{
/* find the tool button which is the source of this DnD operation */
GtkWidget *palette = gtk_drag_get_source_widget (context);
GtkWidget *tool_item = NULL;
CanvasItem *item;
while (palette && !GTK_IS_TOOL_PALETTE (palette))
palette = gtk_widget_get_parent (palette);
if (palette)
tool_item = gtk_tool_palette_get_drag_item (GTK_TOOL_PALETTE (palette),
selection);
/* create a canvas item when a tool button was found */
g_assert (NULL == drop_item);
if (!GTK_IS_TOOL_ITEM (tool_item))
return;
if (drop_item)
{
canvas_item_free (drop_item);
drop_item = NULL;
}
item = canvas_item_new (widget, GTK_TOOL_BUTTON (tool_item), x, y);
/* Either create a new item or just create a preview item,
depending on why the drag data was requested. */
if(drag_data_requested_for_drop)
{
canvas_items = g_list_append (canvas_items, item);
drop_item = NULL;
gtk_drag_finish (context, TRUE, FALSE, time);
} else
{
drop_item = item;
gdk_drag_status (context, GDK_ACTION_COPY, time);
}
gtk_widget_queue_draw (widget);
}
static gboolean
interactive_canvas_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time,
gpointer data)
{
GdkAtom target = gtk_drag_dest_find_target (widget, context, NULL);
if (!target)
return FALSE;
drag_data_requested_for_drop = TRUE;
gtk_drag_get_data (widget, context, target, time);
return FALSE;
}
static void
interactive_canvas_drag_leave (gpointer data)
{
if (drop_item)
{
GtkWidget *widget = GTK_WIDGET (data);
canvas_item_free (drop_item);
drop_item = NULL;
if (widget)
gtk_widget_queue_draw (widget);
}
}
static void
on_combo_orientation_changed (GtkComboBox *combo_box,
gpointer user_data)
{
GtkToolPalette *palette = GTK_TOOL_PALETTE (user_data);
GtkScrolledWindow *sw;
GtkTreeModel *model = gtk_combo_box_get_model (combo_box);
GtkTreeIter iter;
gint val = 0;
sw = GTK_SCROLLED_WINDOW (gtk_widget_get_parent (GTK_WIDGET (palette)));
if (!gtk_combo_box_get_active_iter (combo_box, &iter))
return;
gtk_tree_model_get (model, &iter, 1, &val, -1);
gtk_orientable_set_orientation (GTK_ORIENTABLE (palette), val);
if (val == GTK_ORIENTATION_HORIZONTAL)
gtk_scrolled_window_set_policy (sw, GTK_POLICY_AUTOMATIC, GTK_POLICY_NEVER);
else
gtk_scrolled_window_set_policy (sw, GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
}
static void
on_combo_style_changed (GtkComboBox *combo_box,
gpointer user_data)
{
GtkToolPalette *palette = GTK_TOOL_PALETTE (user_data);
GtkTreeModel *model = gtk_combo_box_get_model (combo_box);
GtkTreeIter iter;
gint val = 0;
if (!gtk_combo_box_get_active_iter (combo_box, &iter))
return;
gtk_tree_model_get (model, &iter, 1, &val, -1);
if (val == -1)
gtk_tool_palette_unset_style (palette);
else
gtk_tool_palette_set_style (palette, val);
}
GtkWidget *
do_toolpalette (GtkWidget *do_widget)
{
GtkWidget *box = NULL;
GtkWidget *hbox = NULL;
GtkWidget *combo_orientation = NULL;
GtkListStore *orientation_model = NULL;
GtkWidget *combo_style = NULL;
GtkListStore *style_model = NULL;
GtkCellRenderer *cell_renderer = NULL;
GtkTreeIter iter;
GtkWidget *palette = NULL;
GtkWidget *palette_scroller = NULL;
GtkWidget *notebook = NULL;
GtkWidget *contents = NULL;
GtkWidget *contents_scroller = NULL;
if (!window)
{
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_display (GTK_WINDOW (window),
gtk_widget_get_display (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "Tool Palette");
gtk_window_set_default_size (GTK_WINDOW (window), 200, 600);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
/* Add widgets to control the ToolPalette appearance: */
box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
g_object_set (box, "margin", 6, NULL);
gtk_container_add (GTK_CONTAINER (window), box);
/* Orientation combo box: */
orientation_model = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT);
gtk_list_store_append (orientation_model, &iter);
gtk_list_store_set (orientation_model, &iter,
0, "Horizontal",
1, GTK_ORIENTATION_HORIZONTAL,
-1);
gtk_list_store_append (orientation_model, &iter);
gtk_list_store_set (orientation_model, &iter,
0, "Vertical",
1, GTK_ORIENTATION_VERTICAL,
-1);
combo_orientation =
gtk_combo_box_new_with_model (GTK_TREE_MODEL (orientation_model));
cell_renderer = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo_orientation),
cell_renderer,
TRUE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo_orientation),
cell_renderer,
"text", 0,
NULL);
gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combo_orientation), &iter);
gtk_box_pack_start (GTK_BOX (box), combo_orientation);
/* Style combo box: */
style_model = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT);
gtk_list_store_append (style_model, &iter);
gtk_list_store_set (style_model, &iter,
0, "Text",
1, GTK_TOOLBAR_TEXT,
-1);
gtk_list_store_append (style_model, &iter);
gtk_list_store_set (style_model, &iter,
0, "Both",
1, GTK_TOOLBAR_BOTH,
-1);
gtk_list_store_append (style_model, &iter);
gtk_list_store_set (style_model, &iter,
0, "Both: Horizontal",
1, GTK_TOOLBAR_BOTH_HORIZ,
-1);
gtk_list_store_append (style_model, &iter);
gtk_list_store_set (style_model, &iter,
0, "Icons",
1, GTK_TOOLBAR_ICONS,
-1);
gtk_list_store_append (style_model, &iter);
gtk_list_store_set (style_model, &iter,
0, "Default",
1, -1, /* A custom meaning for this demo. */
-1);
combo_style = gtk_combo_box_new_with_model (GTK_TREE_MODEL (style_model));
cell_renderer = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo_style),
cell_renderer,
TRUE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo_style),
cell_renderer,
"text", 0,
NULL);
gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combo_style), &iter);
gtk_box_pack_start (GTK_BOX (box), combo_style);
/* Add hbox */
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 5);
gtk_box_pack_start (GTK_BOX (box), hbox);
/* Add and fill the ToolPalette: */
palette = gtk_tool_palette_new ();
load_icon_items (GTK_TOOL_PALETTE (palette));
load_toggle_items (GTK_TOOL_PALETTE (palette));
load_special_items (GTK_TOOL_PALETTE (palette));
palette_scroller = gtk_scrolled_window_new (NULL, NULL);
gtk_widget_set_vexpand (palette_scroller, TRUE);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (palette_scroller),
GTK_POLICY_NEVER,
GTK_POLICY_AUTOMATIC);
g_object_set (palette_scroller, "margin", 6, NULL);
gtk_widget_set_hexpand (palette_scroller, TRUE);
gtk_container_add (GTK_CONTAINER (palette_scroller), palette);
gtk_container_add (GTK_CONTAINER (hbox), palette_scroller);
/* Connect signals: */
g_signal_connect (combo_orientation, "changed",
G_CALLBACK (on_combo_orientation_changed), palette);
g_signal_connect (combo_style, "changed",
G_CALLBACK (on_combo_style_changed), palette);
/* Keep the widgets in sync: */
on_combo_orientation_changed (GTK_COMBO_BOX (combo_orientation), palette);
/* ===== notebook ===== */
notebook = gtk_notebook_new ();
g_object_set (notebook, "margin", 6, NULL);
gtk_box_pack_end (GTK_BOX(hbox), notebook);
/* ===== DnD for tool items ===== */
g_signal_connect (palette, "drag-data-received",
G_CALLBACK (palette_drag_data_received), NULL);
gtk_tool_palette_add_drag_dest (GTK_TOOL_PALETTE (palette),
palette,
GTK_DEST_DEFAULT_ALL,
GTK_TOOL_PALETTE_DRAG_ITEMS |
GTK_TOOL_PALETTE_DRAG_GROUPS,
GDK_ACTION_MOVE);
/* ===== passive DnD dest ===== */
contents = gtk_drawing_area_new ();
g_object_connect (contents,
"draw", canvas_draw, NULL,
"drag-data-received", passive_canvas_drag_data_received, NULL,
NULL);
gtk_tool_palette_add_drag_dest (GTK_TOOL_PALETTE (palette),
contents,
GTK_DEST_DEFAULT_ALL,
GTK_TOOL_PALETTE_DRAG_ITEMS,
GDK_ACTION_COPY);
contents_scroller = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (contents_scroller),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_ALWAYS);
gtk_container_add (GTK_CONTAINER (contents_scroller), contents);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
contents_scroller,
gtk_label_new ("Passive DnD Mode"));
g_object_set (contents_scroller, "margin", 6, NULL);
/* ===== interactive DnD dest ===== */
contents = gtk_drawing_area_new ();
g_object_connect (contents,
"draw", canvas_draw, NULL,
"drag-motion", interactive_canvas_drag_motion, NULL,
"drag-data-received", interactive_canvas_drag_data_received, NULL,
"drag-leave", interactive_canvas_drag_leave, contents,
"drag-drop", interactive_canvas_drag_drop, NULL,
NULL);
gtk_tool_palette_add_drag_dest (GTK_TOOL_PALETTE (palette),
contents,
GTK_DEST_DEFAULT_HIGHLIGHT,
GTK_TOOL_PALETTE_DRAG_ITEMS,
GDK_ACTION_COPY);
contents_scroller = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (contents_scroller),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_ALWAYS);
gtk_container_add (GTK_CONTAINER (contents_scroller), contents);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), contents_scroller,
gtk_label_new ("Interactive DnD Mode"));
}
if (!gtk_widget_get_visible (window))
{
gtk_widget_show (window);
}
else
{
gtk_widget_destroy (window);
window = NULL;
}
return window;
}
static void
load_icon_items (GtkToolPalette *palette)
{
GList *contexts;
GList *l;
GtkIconTheme *icon_theme;
icon_theme = gtk_icon_theme_get_for_display (gtk_widget_get_display (GTK_WIDGET (palette)));
contexts = gtk_icon_theme_list_contexts (icon_theme);
for (l = contexts; l; l = l->next)
{
gchar *context = l->data;
GList *icon_names;
GList *ll;
const guint max_icons = 10;
guint icons_count = 0;
GtkWidget *group = gtk_tool_item_group_new (context);
gtk_container_add (GTK_CONTAINER (palette), group);
if (g_strcmp0 (context, "Animations") == 0)
continue;
g_message ("Got context '%s'", context);
icon_names = gtk_icon_theme_list_icons (icon_theme, context);
icon_names = g_list_sort (icon_names, (GCompareFunc) strcmp);
for (ll = icon_names; ll; ll = ll->next)
{
GtkToolItem *item;
gchar *id = ll->data;
if (g_str_equal (id, "emblem-desktop"))
continue;
if (g_str_has_suffix (id, "-symbolic"))
continue;
g_message ("Got id '%s'", id);
item = gtk_tool_button_new (NULL, NULL);
gtk_tool_button_set_icon_name (GTK_TOOL_BUTTON (item), id);
gtk_tool_item_set_tooltip_text (GTK_TOOL_ITEM (item), id);
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (group), item, -1);
/* Prevent us having an insane number of icons: */
++icons_count;
if(icons_count >= max_icons)
break;
}
g_list_free_full (icon_names, g_free);
}
g_list_free_full (contexts, g_free);
}
static void
load_toggle_items (GtkToolPalette *palette)
{
GSList *toggle_group = NULL;
GtkToolItem *item;
GtkWidget *group;
char *label;
int i;
group = gtk_tool_item_group_new ("Radio Item");
gtk_container_add (GTK_CONTAINER (palette), group);
for (i = 1; i <= 10; ++i)
{
label = g_strdup_printf ("#%d", i);
item = gtk_radio_tool_button_new (toggle_group);
gtk_tool_button_set_label (GTK_TOOL_BUTTON (item), label);
g_free (label);
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (group), item, -1);
toggle_group = gtk_radio_tool_button_get_group (GTK_RADIO_TOOL_BUTTON (item));
}
}
static GtkToolItem *
create_entry_item (const char *text)
{
GtkToolItem *item;
GtkWidget *entry;
entry = gtk_entry_new ();
gtk_entry_set_text (GTK_ENTRY (entry), text);
gtk_entry_set_width_chars (GTK_ENTRY (entry), 5);
item = gtk_tool_item_new ();
gtk_container_add (GTK_CONTAINER (item), entry);
return item;
}
static void
load_special_items (GtkToolPalette *palette)
{
GtkToolItem *item;
GtkWidget *group;
GtkWidget *label_button;
group = gtk_tool_item_group_new (NULL);
label_button = gtk_button_new_with_label ("Advanced Features");
gtk_widget_show (label_button);
gtk_tool_item_group_set_label_widget (GTK_TOOL_ITEM_GROUP (group),
label_button);
gtk_container_add (GTK_CONTAINER (palette), group);
item = create_entry_item ("homogeneous=FALSE");
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (group), item, -1);
gtk_container_child_set (GTK_CONTAINER (group), GTK_WIDGET (item),
"homogeneous", FALSE, NULL);
item = create_entry_item ("homogeneous=FALSE, expand=TRUE");
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (group), item, -1);
gtk_container_child_set (GTK_CONTAINER (group), GTK_WIDGET (item),
"homogeneous", FALSE, "expand", TRUE,
NULL);
item = create_entry_item ("homogeneous=FALSE, expand=TRUE, fill=FALSE");
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (group), item, -1);
gtk_container_child_set (GTK_CONTAINER (group), GTK_WIDGET (item),
"homogeneous", FALSE, "expand", TRUE,
"fill", FALSE, NULL);
item = create_entry_item ("homogeneous=FALSE, expand=TRUE, new-row=TRUE");
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (group), item, -1);
gtk_container_child_set (GTK_CONTAINER (group), GTK_WIDGET (item),
"homogeneous", FALSE, "expand", TRUE,
"new-row", TRUE, NULL);
item = gtk_tool_button_new (NULL, NULL);
gtk_tool_button_set_icon_name (GTK_TOOL_BUTTON (item), "go-up");
gtk_tool_item_set_tooltip_text (item, "Show on vertical palettes only");
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (group), item, -1);
gtk_tool_item_set_visible_horizontal (item, FALSE);
item = gtk_tool_button_new (NULL, NULL);
gtk_tool_button_set_icon_name (GTK_TOOL_BUTTON (item), "go-next");
gtk_tool_item_set_tooltip_text (item, "Show on horizontal palettes only");
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (group), item, -1);
gtk_tool_item_set_visible_vertical (item, FALSE);
item = gtk_tool_button_new (NULL, NULL);
gtk_tool_button_set_icon_name (GTK_TOOL_BUTTON (item), "edit-delete");
gtk_tool_item_set_tooltip_text (item, "Do not show at all");
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (group), item, -1);
gtk_widget_hide (GTK_WIDGET (item));
item = gtk_tool_button_new (NULL, NULL);
gtk_tool_button_set_icon_name (GTK_TOOL_BUTTON (item), "view-fullscreen");
gtk_tool_item_set_tooltip_text (item, "Expanded this item");
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (group), item, -1);
gtk_container_child_set (GTK_CONTAINER (group), GTK_WIDGET (item),
"homogeneous", FALSE,
"expand", TRUE,
NULL);
item = gtk_tool_button_new (NULL, NULL);
gtk_tool_button_set_icon_name (GTK_TOOL_BUTTON (item), "help-browser");
gtk_tool_item_set_tooltip_text (item, "A regular item");
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (group), item, -1);
}