Struct gtk::ToolPalette[][src]

pub struct ToolPalette(_);
Expand description

A ToolPalette allows you to add GtkToolItems to a palette-like container with different categories and drag and drop support.

A ToolPalette is created with a call to new().

GtkToolItems cannot be added directly to a ToolPalette - instead they are added to a ToolItemGroup which can than be added to a ToolPalette. To add a ToolItemGroup to a ToolPalette, use ContainerExt::add().

⚠️ The following code is in C ⚠️

GtkWidget *palette, *group;
GtkToolItem *item;

palette = gtk_tool_palette_new ();
group = gtk_tool_item_group_new (_("Test Category"));
gtk_container_add (GTK_CONTAINER (palette), group);

item = gtk_tool_button_new (NULL, _("_Open"));
gtk_tool_button_set_icon_name (GTK_TOOL_BUTTON (item), "document-open");
gtk_tool_item_group_insert (GTK_TOOL_ITEM_GROUP (group), item, -1);

The easiest way to use drag and drop with ToolPalette is to call ToolPaletteExt::add_drag_dest() with the desired drag source palette and the desired drag target widget. Then ToolPaletteExt::drag_item() can be used to get the dragged item in the signal::Widget::drag-data-received signal handler of the drag target.

⚠️ The following code is in C ⚠️

static void
passive_canvas_drag_data_received (GtkWidget        *widget,
                                   GdkDragContext   *context,
                                   gint              x,
                                   gint              y,
                                   GtkSelectionData *selection,
                                   guint             info,
                                   guint             time,
                                   gpointer          data)
{
  GtkWidget *palette;
  GtkWidget *item;

  // Get the dragged item
  palette = gtk_widget_get_ancestor (gtk_drag_get_source_widget (context),
                                     GTK_TYPE_TOOL_PALETTE);
  if (palette != NULL)
    item = gtk_tool_palette_get_drag_item (GTK_TOOL_PALETTE (palette),
                                           selection);

  // Do something with item
}

GtkWidget *target, palette;

palette = gtk_tool_palette_new ();
target = gtk_drawing_area_new ();

g_signal_connect (G_OBJECT (target), "drag-data-received",
                  G_CALLBACK (passive_canvas_drag_data_received), NULL);
gtk_tool_palette_add_drag_dest (GTK_TOOL_PALETTE (palette), target,
                                GTK_DEST_DEFAULT_ALL,
                                GTK_TOOL_PALETTE_DRAG_ITEMS,
                                GDK_ACTION_COPY);

CSS nodes

GtkToolPalette has a single CSS node named toolpalette.

Implements

ToolPaletteExt, ContainerExt, WidgetExt, glib::ObjectExt, BuildableExt, OrientableExt, ScrollableExt, WidgetExtManual, BuildableExtManual

Implementations

Creates a new tool palette.

Returns

a new ToolPalette

Creates a new builder-pattern struct instance to construct ToolPalette objects.

This method returns an instance of ToolPaletteBuilder which can be used to create ToolPalette objects.

Get the target entry for a dragged ToolItemGroup.

Returns

the TargetEntry for a dragged group

Gets the target entry for a dragged ToolItem.

Returns

the TargetEntry for a dragged item.

Trait Implementations

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This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

Returns the type identifier of Self.

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