mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-12-28 22:41:43 +00:00
142 lines
3.6 KiB
C
142 lines
3.6 KiB
C
#include <gtk/gtk.h>
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typedef GtkListStore MyModel;
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typedef GtkListStoreClass MyModelClass;
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static void my_model_drag_source_init (GtkTreeDragSourceIface *iface);
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G_DEFINE_TYPE_WITH_CODE (MyModel, my_model, GTK_TYPE_LIST_STORE,
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G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_DRAG_SOURCE,
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my_model_drag_source_init))
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static void
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my_model_class_init (MyModelClass *class)
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{
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}
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static void
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my_model_init (MyModel *object)
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{
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GType types[1] = { G_TYPE_STRING };
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gtk_list_store_set_column_types (GTK_LIST_STORE (object), G_N_ELEMENTS (types), types);
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}
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static gboolean
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my_model_drag_data_get (GtkTreeDragSource *source,
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GtkTreePath *path,
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GtkSelectionData *data)
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{
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GtkTreeIter iter;
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gchar *text;
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gtk_tree_model_get_iter (GTK_TREE_MODEL (source), &iter, path);
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gtk_tree_model_get (GTK_TREE_MODEL (source), &iter, 0, &text, -1);
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gtk_selection_data_set_text (data, text, -1);
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g_free (text);
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return TRUE;
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}
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static void
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my_model_drag_source_init (GtkTreeDragSourceIface *iface)
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{
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static GtkTreeDragSourceIface *parent;
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parent = g_type_interface_peek_parent (iface);
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iface->row_draggable = parent->row_draggable;
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iface->drag_data_delete = parent->drag_data_delete;
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iface->drag_data_get = my_model_drag_data_get;
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}
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static GtkTreeModel *
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get_model (void)
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{
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MyModel *model;
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model = g_object_new (my_model_get_type (), NULL);
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gtk_list_store_insert_with_values (GTK_LIST_STORE (model), NULL, -1, 0, "Item 1", -1);
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gtk_list_store_insert_with_values (GTK_LIST_STORE (model), NULL, -1, 0, "Item 2", -1);
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gtk_list_store_insert_with_values (GTK_LIST_STORE (model), NULL, -1, 0, "Item 3", -1);
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return GTK_TREE_MODEL (model);
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}
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static const char *entries[] = {
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"text/plain"
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};
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static GtkWidget *
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get_dragsource (void)
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{
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GtkTreeView *tv;
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GtkCellRenderer *renderer;
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GtkTreeViewColumn *column;
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GdkContentFormats *targets;
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tv = (GtkTreeView*) gtk_tree_view_new ();
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renderer = gtk_cell_renderer_text_new ();
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column = gtk_tree_view_column_new_with_attributes ("Text", renderer, "text", 0, NULL);
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gtk_tree_view_append_column (tv, column);
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gtk_tree_view_set_model (tv, get_model ());
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targets = gdk_content_formats_new (entries, G_N_ELEMENTS (entries));
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gtk_tree_view_enable_model_drag_source (tv, GDK_BUTTON1_MASK, targets, GDK_ACTION_COPY);
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gdk_content_formats_unref (targets);
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return GTK_WIDGET (tv);
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}
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static void
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drag_data_received (GtkWidget *widget,
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GdkDragContext *context,
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gint x, gint y,
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GtkSelectionData *selda,
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guint time,
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gpointer dada)
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{
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gchar *text;
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text = (gchar*) gtk_selection_data_get_text (selda);
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gtk_label_set_label (GTK_LABEL (widget), text);
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g_free (text);
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}
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static GtkWidget *
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get_droptarget (void)
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{
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GtkWidget *label;
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GdkContentFormats *targets;
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label = gtk_label_new ("Drop here");
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targets = gdk_content_formats_new (entries, G_N_ELEMENTS (entries));
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gtk_drag_dest_set (label, GTK_DEST_DEFAULT_ALL, targets, GDK_ACTION_COPY);
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g_signal_connect (label, "drag-data-received", G_CALLBACK (drag_data_received), NULL);
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gdk_content_formats_unref (targets);
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return label;
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}
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int
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main (int argc, char *argv[])
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{
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GtkWidget *window;
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GtkWidget *box;
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gtk_init ();
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
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gtk_container_add (GTK_CONTAINER (window), box);
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gtk_container_add (GTK_CONTAINER (box), get_dragsource ());
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gtk_container_add (GTK_CONTAINER (box), get_droptarget ());
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gtk_widget_show (window);
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gtk_main ();
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return 0;
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}
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