GtkToolItem

## GtkToolItem GtkToolItem — The base class of widgets that can be added to GtkToolShell |

## Synopsis

    #include <gtk/gtk.h>

    struct              GtkToolItem;
    GtkToolItem *       gtk_tool_item_new                   (void);
    void                gtk_tool_item_set_homogeneous       (GtkToolItem *tool_item,
                                                             gboolean homogeneous);
    gboolean            gtk_tool_item_get_homogeneous       (GtkToolItem *tool_item);
    void                gtk_tool_item_set_expand            (GtkToolItem *tool_item,
                                                             gboolean expand);
    gboolean            gtk_tool_item_get_expand            (GtkToolItem *tool_item);
    void                gtk_tool_item_set_tooltip_text      (GtkToolItem *tool_item,
                                                             const gchar *text);
    void                gtk_tool_item_set_tooltip_markup    (GtkToolItem *tool_item,
                                                             const gchar *markup);
    void                gtk_tool_item_set_use_drag_window   (GtkToolItem *tool_item,
                                                             gboolean use_drag_window);
    gboolean            gtk_tool_item_get_use_drag_window   (GtkToolItem *tool_item);
    void                gtk_tool_item_set_visible_horizontal
                                                            (GtkToolItem *tool_item,
                                                             gboolean visible_horizontal);
    gboolean            gtk_tool_item_get_visible_horizontal
                                                            (GtkToolItem *tool_item);
    void                gtk_tool_item_set_visible_vertical  (GtkToolItem *tool_item,
                                                             gboolean visible_vertical);
    gboolean            gtk_tool_item_get_visible_vertical  (GtkToolItem *tool_item);
    void                gtk_tool_item_set_is_important      (GtkToolItem *tool_item,
                                                             gboolean is_important);
    gboolean            gtk_tool_item_get_is_important      (GtkToolItem *tool_item);
    PangoEllipsizeMode  gtk_tool_item_get_ellipsize_mode    (GtkToolItem *tool_item);
    GtkIconSize         gtk_tool_item_get_icon_size         (GtkToolItem *tool_item);
    GtkOrientation      gtk_tool_item_get_orientation       (GtkToolItem *tool_item);
    GtkToolbarStyle     gtk_tool_item_get_toolbar_style     (GtkToolItem *tool_item);
    GtkReliefStyle      gtk_tool_item_get_relief_style      (GtkToolItem *tool_item);
    gfloat              gtk_tool_item_get_text_alignment    (GtkToolItem *tool_item);
    GtkOrientation      gtk_tool_item_get_text_orientation  (GtkToolItem *tool_item);
    GtkWidget *         gtk_tool_item_retrieve_proxy_menu_item
                                                            (GtkToolItem *tool_item);
    GtkWidget *         gtk_tool_item_get_proxy_menu_item   (GtkToolItem *tool_item,
                                                             const gchar *menu_item_id);
    void                gtk_tool_item_set_proxy_menu_item   (GtkToolItem *tool_item,
                                                             const gchar *menu_item_id,
                                                             GtkWidget *menu_item);
    void                gtk_tool_item_rebuild_menu          (GtkToolItem *tool_item);
    void                gtk_tool_item_toolbar_reconfigured  (GtkToolItem *tool_item);
    GtkSizeGroup *      gtk_tool_item_get_text_size_group   (GtkToolItem *tool_item);

## Object Hierarchy

      GObject
       +----GInitiallyUnowned
             +----GtkWidget
                   +----GtkContainer
                         +----GtkBin
                               +----GtkToolItem
                                     +----GtkToolButton
                                     +----GtkSeparatorToolItem

## Implemented Interfaces

GtkToolItem implements AtkImplementorIface, GtkBuildable and GtkActivatable.

## Properties

      "is-important"             gboolean              : Read / Write
      "visible-horizontal"       gboolean              : Read / Write
      "visible-vertical"         gboolean              : Read / Write

## Signals

      "create-menu-proxy"                              : Run Last
      "toolbar-reconfigured"                           : Run Last

## Description

GtkToolItems are widgets that can appear on a toolbar. To create a toolbar item that contain something else than a button, use `gtk_tool_item_new()`. Use `gtk_container_add()` to add a child widget to the tool item.

For toolbar items that contain buttons, see the GtkToolButton, GtkToggleToolButton and GtkRadioToolButton classes.

See the GtkToolbar class for a description of the toolbar widget, and GtkToolShell for a description of the tool shell interface.

## Details

### struct GtkToolItem

    struct GtkToolItem;

The GtkToolItem struct contains only private data. It should only be accessed through the functions described below.

### gtk_tool_item_new ()

    GtkToolItem *       gtk_tool_item_new                   (void);

Creates a new GtkToolItem

Returns : | the new GtkToolItem

Since 2.4

### gtk_tool_item_set_homogeneous ()

    void                gtk_tool_item_set_homogeneous       (GtkToolItem *tool_item,
                                                             gboolean homogeneous);

Sets whether `tool_item` is to be allocated the same size as other homogeneous items. The effect is that all homogeneous items will have the same width as the widest of the items.

`tool_item` : | a GtkToolItem
`homogeneous` : | whether `tool_item` is the same size as other homogeneous items

Since 2.4

### gtk_tool_item_get_homogeneous ()

    gboolean            gtk_tool_item_get_homogeneous       (GtkToolItem *tool_item);

Returns whether `tool_item` is the same size as other homogeneous items. See `gtk_tool_item_set_homogeneous()`.

`tool_item` : | a GtkToolItem
Returns : | `TRUE` if the item is the same size as other homogeneous items.

Since 2.4

### gtk_tool_item_set_expand ()

    void                gtk_tool_item_set_expand            (GtkToolItem *tool_item,
                                                             gboolean expand);

Sets whether `tool_item` is allocated extra space when there is more room on the toolbar then needed for the items. The effect is that the item gets bigger when the toolbar gets bigger and smaller when the toolbar gets smaller.

`tool_item` : | a GtkToolItem
`expand` : | Whether `tool_item` is allocated extra space

Since 2.4

### gtk_tool_item_get_expand ()

    gboolean            gtk_tool_item_get_expand            (GtkToolItem *tool_item);

Returns whether `tool_item` is allocated extra space. See `gtk_tool_item_set_expand()`.

`tool_item` : | a GtkToolItem
Returns : | `TRUE` if `tool_item` is allocated extra space.

Since 2.4

### gtk_tool_item_set_tooltip_text ()

    void                gtk_tool_item_set_tooltip_text      (GtkToolItem *tool_item,
                                                             const gchar *text);

Sets the text to be displayed as tooltip on the item. See `gtk_widget_set_tooltip_text()`.

`tool_item` : | a GtkToolItem
`text` : | text to be used as tooltip for `tool_item`

Since 2.12

### gtk_tool_item_set_tooltip_markup ()

    void                gtk_tool_item_set_tooltip_markup    (GtkToolItem *tool_item,
                                                             const gchar *markup);

Sets the markup text to be displayed as tooltip on the item. See `gtk_widget_set_tooltip_markup()`.

`tool_item` : | a GtkToolItem
`markup` : | markup text to be used as tooltip for `tool_item`

Since 2.12

### gtk_tool_item_set_use_drag_window ()

    void                gtk_tool_item_set_use_drag_window   (GtkToolItem *tool_item,
                                                             gboolean use_drag_window);

Sets whether `tool_item` has a drag window. When `TRUE` the toolitem can be used as a drag source through `gtk_drag_source_set()`. When `tool_item` has a drag window it will intercept all events, even those that would otherwise be sent to a child of `tool_item`.

`tool_item` : | a GtkToolItem
`use_drag_window` : | Whether `tool_item` has a drag window.

Since 2.4

### gtk_tool_item_get_use_drag_window ()

    gboolean            gtk_tool_item_get_use_drag_window   (GtkToolItem *tool_item);

Returns whether `tool_item` has a drag window. See `gtk_tool_item_set_use_drag_window()`.

`tool_item` : | a GtkToolItem
Returns : | `TRUE` if `tool_item` uses a drag window.

Since 2.4

### gtk_tool_item_set_visible_horizontal ()

    void                gtk_tool_item_set_visible_horizontal
                                                            (GtkToolItem *tool_item,
                                                             gboolean visible_horizontal);

Sets whether `tool_item` is visible when the toolbar is docked horizontally.

`tool_item` : | a GtkToolItem
`visible_horizontal` : | Whether `tool_item` is visible when in horizontal mode

Since 2.4

### gtk_tool_item_get_visible_horizontal ()

    gboolean            gtk_tool_item_get_visible_horizontal
                                                            (GtkToolItem *tool_item);

Returns whether the `tool_item` is visible on toolbars that are docked horizontally.

`tool_item` : | a GtkToolItem
Returns : | `TRUE` if `tool_item` is visible on toolbars that are docked horizontally.

Since 2.4

### gtk_tool_item_set_visible_vertical ()

    void                gtk_tool_item_set_visible_vertical  (GtkToolItem *tool_item,
                                                             gboolean visible_vertical);

Sets whether `tool_item` is visible when the toolbar is docked vertically. Some tool items, such as text entries, are too wide to be useful on a vertically docked toolbar. If `visible_vertical` is `FALSE` `tool_item` will not appear on toolbars that are docked vertically.

`tool_item` : | a GtkToolItem
`visible_vertical` : | whether `tool_item` is visible when the toolbar is in vertical mode

Since 2.4

### gtk_tool_item_get_visible_vertical ()

    gboolean            gtk_tool_item_get_visible_vertical  (GtkToolItem *tool_item);

Returns whether `tool_item` is visible when the toolbar is docked vertically. See `gtk_tool_item_set_visible_vertical()`.

`tool_item` : | a GtkToolItem
Returns : | Whether `tool_item` is visible when the toolbar is docked vertically

Since 2.4

### gtk_tool_item_set_is_important ()

    void                gtk_tool_item_set_is_important      (GtkToolItem *tool_item,
                                                             gboolean is_important);

Sets whether `tool_item` should be considered important. The GtkToolButton class uses this property to determine whether to show or hide its label when the toolbar style is `GTK_TOOLBAR_BOTH_HORIZ`. The result is that only tool buttons with the "is_important" property set have labels, an effect known as "priority text"

`tool_item` : | a GtkToolItem
`is_important` : | whether the tool item should be considered important

Since 2.4

### gtk_tool_item_get_is_important ()

    gboolean            gtk_tool_item_get_is_important      (GtkToolItem *tool_item);

Returns whether `tool_item` is considered important. See `gtk_tool_item_set_is_important()`

`tool_item` : | a GtkToolItem
Returns : | `TRUE` if `tool_item` is considered important.

Since 2.4

### gtk_tool_item_get_ellipsize_mode ()

    PangoEllipsizeMode  gtk_tool_item_get_ellipsize_mode    (GtkToolItem *tool_item);

Returns the ellipsize mode used for `tool_item`. Custom subclasses of GtkToolItem should call this function to find out how text should be ellipsized.

`tool_item` : | a GtkToolItem
Returns : | a PangoEllipsizeMode indicating how text in `tool_item` should be ellipsized.

Since 2.20

### gtk_tool_item_get_icon_size ()

    GtkIconSize         gtk_tool_item_get_icon_size         (GtkToolItem *tool_item);

Returns the icon size used for `tool_item`. Custom subclasses of GtkToolItem should call this function to find out what size icons they should use.

`tool_item` : | a GtkToolItem
Returns : | a GtkIconSize indicating the icon size used for `tool_item`. [type int]

Since 2.4

### gtk_tool_item_get_orientation ()

    GtkOrientation      gtk_tool_item_get_orientation       (GtkToolItem *tool_item);

Returns the orientation used for `tool_item`. Custom subclasses of GtkToolItem should call this function to find out what size icons they should use.

`tool_item` : | a GtkToolItem
Returns : | a GtkOrientation indicating the orientation used for `tool_item`

Since 2.4

### gtk_tool_item_get_toolbar_style ()

    GtkToolbarStyle     gtk_tool_item_get_toolbar_style     (GtkToolItem *tool_item);

Returns the toolbar style used for `tool_item`. Custom subclasses of GtkToolItem should call this function in the handler of the GtkToolItem::toolbar_reconfigured signal to find out in what style the toolbar is displayed and change themselves accordingly

Possibilities are:

- GTK_TOOLBAR_BOTH, meaning the tool item should show both an icon and a label, stacked vertically
- GTK_TOOLBAR_ICONS, meaning the toolbar shows only icons
- GTK_TOOLBAR_TEXT, meaning the tool item should only show text
- GTK_TOOLBAR_BOTH_HORIZ, meaning the tool item should show both an icon and a label, arranged horizontally (however, note the "has_text_horizontally" property that makes tool buttons not show labels when the toolbar style is GTK_TOOLBAR_BOTH_HORIZ.

`tool_item` : | a GtkToolItem
Returns : | A GtkToolbarStyle indicating the toolbar style used for `tool_item`.

Since 2.4

### gtk_tool_item_get_relief_style ()

    GtkReliefStyle      gtk_tool_item_get_relief_style      (GtkToolItem *tool_item);

Returns the relief style of `tool_item`. See `gtk_button_set_relief_style()`. Custom subclasses of GtkToolItem should call this function in the handler of the "toolbar_reconfigured" signal to find out the relief style of buttons.

`tool_item` : | a GtkToolItem
Returns : | a GtkReliefStyle indicating the relief style used for `tool_item`.

Since 2.4

### gtk_tool_item_get_text_alignment ()

    gfloat              gtk_tool_item_get_text_alignment    (GtkToolItem *tool_item);

Returns the text alignment used for `tool_item`. Custom subclasses of GtkToolItem should call this function to find out how text should be aligned.

`tool_item` : | a GtkToolItem:
Returns : | a gfloat indicating the horizontal text alignment used for `tool_item`

Since 2.20

### gtk_tool_item_get_text_orientation ()

    GtkOrientation      gtk_tool_item_get_text_orientation  (GtkToolItem *tool_item);

Returns the text orientation used for `tool_item`. Custom subclasses of GtkToolItem should call this function to find out how text should be orientated.

`tool_item` : | a GtkToolItem
Returns : | a GtkOrientation indicating the text orientation used for `tool_item`

Since 2.20

### gtk_tool_item_retrieve_proxy_menu_item ()

    GtkWidget *         gtk_tool_item_retrieve_proxy_menu_item
                                                            (GtkToolItem *tool_item);

Returns the GtkMenuItem that was last set by `gtk_tool_item_set_proxy_menu_item()`, ie. the GtkMenuItem that is going to appear in the overflow menu.

`tool_item` : | a GtkToolItem
Returns : | The GtkMenuItem that is going to appear in the overflow menu for `tool_item`. [transfer none]

Since 2.4

### gtk_tool_item_get_proxy_menu_item ()

    GtkWidget *         gtk_tool_item_get_proxy_menu_item   (GtkToolItem *tool_item,
                                                             const gchar *menu_item_id);

If `menu_item_id` matches the string passed to `gtk_tool_item_set_proxy_menu_item()` return the corresponding GtkMenuItem.

Custom subclasses of GtkToolItem should use this function to update their menu item when the GtkToolItem changes. That the `menu_item_id`s must match ensures that a GtkToolItem will not inadvertently change a menu item that they did not create.

`tool_item` : | a GtkToolItem
`menu_item_id` : | a string used to identify the menu item
Returns : | The GtkMenuItem passed to `gtk_tool_item_set_proxy_menu_item()`, if the `menu_item_id`s match. [transfer none]

Since 2.4

### gtk_tool_item_set_proxy_menu_item ()

    void                gtk_tool_item_set_proxy_menu_item   (GtkToolItem *tool_item,
                                                             const gchar *menu_item_id,
                                                             GtkWidget *menu_item);

Sets the GtkMenuItem used in the toolbar overflow menu. The `menu_item_id` is used to identify the caller of this function and should also be used with `gtk_tool_item_get_proxy_menu_item()`.

`tool_item` : | a GtkToolItem
`menu_item_id` : | a string used to identify `menu_item`
`menu_item` : | a GtkMenuItem to be used in the overflow menu

Since 2.4

### gtk_tool_item_rebuild_menu ()

    void                gtk_tool_item_rebuild_menu          (GtkToolItem *tool_item);

Calling this function signals to the toolbar that the overflow menu item for `tool_item` has changed. If the overflow menu is visible when this function it called, the menu will be rebuilt.

The function must be called when the tool item changes what it will do in response to the "create-menu-proxy" signal.

`tool_item` : | a GtkToolItem

Since 2.6

### gtk_tool_item_toolbar_reconfigured ()

    void                gtk_tool_item_toolbar_reconfigured  (GtkToolItem *tool_item);

Emits the signal "toolbar_reconfigured" on `tool_item`. GtkToolbar and other GtkToolShell implementations use this function to notify children, when some aspect of their configuration changes.

`tool_item` : | a GtkToolItem

Since 2.14

### gtk_tool_item_get_text_size_group ()

    GtkSizeGroup *      gtk_tool_item_get_text_size_group   (GtkToolItem *tool_item);

Returns the size group used for labels in `tool_item`. Custom subclasses of GtkToolItem should call this function and use the size group for labels.

`tool_item` : | a GtkToolItem
Returns : | a GtkSizeGroup. [transfer none]

Since 2.20

## Property Details

### The `"is-important"` property

      "is-important"             gboolean              : Read / Write

Whether the toolbar item is considered important. When TRUE, toolbar buttons show text in GTK_TOOLBAR_BOTH_HORIZ mode.

Default value: FALSE

### The `"visible-horizontal"` property

      "visible-horizontal"       gboolean              : Read / Write

Whether the toolbar item is visible when the toolbar is in a horizontal orientation.

Default value: TRUE

### The `"visible-vertical"` property

      "visible-vertical"         gboolean              : Read / Write

Whether the toolbar item is visible when the toolbar is in a vertical orientation.

Default value: TRUE

## Signal Details

### The `"create-menu-proxy"` signal

    gboolean            user_function                      (GtkToolItem *tool_item,
                                                            gpointer     user_data)      : Run Last

This signal is emitted when the toolbar needs information from `tool_item` about whether the item should appear in the toolbar overflow menu. In response the tool item should either

- call `gtk_tool_item_set_proxy_menu_item()` with a `NULL` pointer and return `TRUE` to indicate that the item should not appear in the overflow menu
- call `gtk_tool_item_set_proxy_menu_item()` with a new menu item and return `TRUE`, or
- return `FALSE` to indicate that the signal was not handled by the item. This means that the item will not appear in the overflow menu unless a later handler installs a menu item.

The toolbar may cache the result of this signal. When the tool item changes how it will respond to this signal it must call `gtk_tool_item_rebuild_menu()` to invalidate the cache and ensure that the toolbar rebuilds its overflow menu.

`tool_item` : | the object the signal was emitted on
`user_data` : | user data set when the signal handler was connected.
Returns : | `TRUE` if the signal was handled, `FALSE` if not

### The `"toolbar-reconfigured"` signal

    void                user_function                      (GtkToolItem *tool_item,
                                                            gpointer     user_data)      : Run Last

This signal is emitted when some property of the toolbar that the item is a child of changes. For custom subclasses of GtkToolItem, the default handler of this signal use the functions

- `gtk_tool_shell_get_orientation()`
- `gtk_tool_shell_get_style()`
- `gtk_tool_shell_get_icon_size()`
- `gtk_tool_shell_get_relief_style()`

to find out what the toolbar should look like and change themselves accordingly.

`tool_item` : | the object the signal was emitted on
`user_data` : | user data set when the signal handler was connected.

## See Also

GtkToolbar | The toolbar widget
GtkToolButton | A subclass of GtkToolItem that displays buttons on the toolbar
GtkSeparatorToolItem | A subclass of GtkToolItem that separates groups of items on a toolbar