Description

Gnome::Gtk4::GridView presents a large dynamic grid of items.

Gnome::Gtk4::GridView uses its factory to generate one child widget for each visible item and shows them in a grid. The orientation of the grid view determines if the grid reflows vertically or horizontally.

Gnome::Gtk4::GridView allows the user to select items according to the selection characteristics of the model. For models that allow multiple selected items, it is possible to turn on _rubberband selection_, using enable-rubberband.

To learn more about the list widget framework, see the [overview](section-list-widget.html).

CSS nodes

Gnome::Gtk4::GridView uses a single CSS node with name gridview. Each child uses a single CSS node with name child. If the activatable defined in Gnome::Gtk4::ListItem property is set, the corresponding row will have the `.activatable` style class. For rubberband selection, a subnode with name rubberband is used.

Accessibility

Gnome::Gtk4::GridView uses the GTK_ACCESSIBLE_ROLE_GRID role, and the items use the GTK_ACCESSIBLE_ROLE_GRID_CELL role.

Class initialization

new

:native-object

Create an object using a native object from elsewhere. See also Gnome::N::TopLevelSupportClass.

multi method new ( N-Object :$native-object! )

new-gridview

Creates a new Gnome::Gtk4::GridView that uses the given $factory for mapping items to widgets.

The function takes ownership of the arguments, so you can write code like

method new-gridview ( N-Object() $model, N-Object() $factory --> Gnome::Gtk4::GridView \)

• $model; (transfer ownership: full) the model to use.

• $factory; (transfer ownership: full) The factory to populate items with.

Methods

get-enable-rubberband

Returns whether rows can be selected by dragging with the mouse.

method get-enable-rubberband (--> Bool )

Return value; True if rubberband selection is enabled.

get-factory

Gets the factory that's currently used to populate list items.

method get-factory (--> N-Object )

Return value; The factory in use.

get-max-columns

Gets the maximum number of columns that the grid will use.

method get-max-columns (--> UInt )

Return value; The maximum number of columns.

get-min-columns

Gets the minimum number of columns that the grid will use.

method get-min-columns (--> UInt )

Return value; The minimum number of columns.

get-model

Gets the model that's currently used to read the items displayed.

method get-model (--> N-Object )

Return value; The model in use.

get-single-click-activate

Returns whether items will be activated on single click and selected on hover.

method get-single-click-activate (--> Bool )

Return value; True if items are activated on single click.

get-tab-behavior

Gets the behavior set for the <kbd>Tab</kbd> key.

method get-tab-behavior (--> GtkListTabBehavior )

Return value; The behavior of the <kbd>Tab</kbd> key.

scroll-to

Scrolls to the item at the given position and performs the actions specified in $flags.

This function works no matter if the gridview is shown or focused. If it isn't, then the changes will take effect once that happens.

method scroll-to ( UInt() $pos, UInt $flags, N-Object $scroll )

• $pos; position of the item.

• $flags; actions to perform.

• $scroll; (transfer ownership: full) details of how to perform the scroll operation or undefined to scroll into view

set-enable-rubberband

Sets whether selections can be changed by dragging with the mouse.

method set-enable-rubberband ( Bool() $enable-rubberband )

• $enable-rubberband; True to enable rubberband selection.

set-factory

Sets the Gnome::Gtk4::ListItemFactory to use for populating list items.

method set-factory ( N-Object() $factory )

• $factory; the factory to use.

set-max-columns

Sets the maximum number of columns to use.

This number must be at least 1.

If $max-columns is smaller than the minimum set via .set-min-columns(), that value is used instead.

method set-max-columns ( UInt() $max-columns )

• $max-columns; The maximum number of columns.

set-min-columns

Sets the minimum number of columns to use.

This number must be at least 1.

If $min-columns is smaller than the minimum set via .set-max-columns(), that value is ignored.

method set-min-columns ( UInt() $min-columns )

• $min-columns; The minimum number of columns.

set-model

Sets the model to use.

This must be a Gnome::Gtk4::R-SelectionModel.

method set-model ( N-Object() $model )

• $model; the model to use.

set-single-click-activate

Sets whether items should be activated on single click and selected on hover.

method set-single-click-activate ( Bool() $single-click-activate )

• $single-click-activate; True to activate items on single click.

set-tab-behavior

Sets the behavior of the <kbd>Tab</kbd> and <kbd>Shift</kbd>+<kbd>Tab</kbd> keys.

method set-tab-behavior ( GtkListTabBehavior $tab-behavior )

• $tab-behavior; The desired tab behavior.

Signals

activate

Emitted when a cell has been activated by the user, usually via activating the GtkGridView|list.activate-item action.

This allows for a convenient way to handle activation in a gridview. See activatable defined in Gnome::Gtk4::ListItem for details on how to use this signal.

method handler (
  guint $position,
  Int :$_handle_id,
  N-GObject :$_native-object,
  Gnome::Gtk4::GridView :$_widget,
  *C<user>-options
)

• $position; position of item to activate.

• $_handle_id; The registered event handler id.

• $_native-object; The native object provided by the Raku object which registered this event. This a native Gnome::Gtk4::GridView object.

• $_widget; The object which registered the signal. User code may have left the object going out of scope.

• user-options; A list of named arguments provided at the .register-signal() method from Gnome::GObject::Object.