C++ SelectionData::get_data方法代码示例

void
Dockable::on_drag_data_received(const Glib::RefPtr<Gdk::DragContext>& context, int, int, const Gtk::SelectionData& selection_data, guint, guint time)
{
	if (selection_data.get_length() >= 0
	 && selection_data.get_format() == 8
	 && selection_data.get_data_type() == "SYNFIG_DOCK")
	{
		Dockable& dockable(**reinterpret_cast<Dockable**>(const_cast<guint8*>(selection_data.get_data())));

		DockBook *parent = dynamic_cast<DockBook*>(get_parent());
		DockBook *dockable_parent = dynamic_cast<DockBook*>(dockable.get_parent());

		if (parent)
		{
			if (dockable_parent != parent)
				 parent->add(dockable,parent->page_num(*this));
			else
				parent->reorder_child(dockable,parent->page_num(*this));
			dockable.present();
			context->drag_finish(true, false, time);
			App::dock_manager->update_window_titles();
			return;
		}
	}

	context->drag_finish(false, false, time);
}

//------------------------------------------------------------------------------
bool ListModelWrapper::drag_data_received_vfunc(const Gtk::TreeModel::Path& dest,
                                                const Gtk::SelectionData& selection_data) {
  bool ret = false;
  // Currently this works for linear lists
  try {
    (*_tm)->reorder(bec::NodeId((const char*)selection_data.get_data()), dest.front());
    ret = true;
  } catch (const std::logic_error& e) {
  }
  return ret;
}

void
DockDialog::drop_on_append(const Glib::RefPtr<Gdk::DragContext>& context, int, int, const Gtk::SelectionData& selection_data, guint, guint time)
{
	if ((selection_data.get_length() >= 0) && (selection_data.get_format() == 8))
	{
		Dockable& dockable(**reinterpret_cast<Dockable**>(const_cast<guint8*>(selection_data.get_data())));
		append_dock_book()->add(dockable);
		context->drag_finish(true, false, time);
		return;
	}

	context->drag_finish(false, false, time);
}

void
Toolbox::on_drop_drag_data_received(const Glib::RefPtr<Gdk::DragContext>& context, int /*x*/, int /*y*/, const Gtk::SelectionData& selection_data_, guint /*info*/, guint time)
{
	// We will make this true once we have a solid drop
	bool success(false);

	if ((selection_data_.get_length() >= 0) && (selection_data_.get_format() == 8))
	{
		synfig::String selection_data((gchar *)(selection_data_.get_data()));

		// For some reason, GTK hands us a list of URLs separated
		// by not only Carriage-Returns, but also Line-Feeds.
		// Line-Feeds will mess us up. Remove all the line-feeds.
		while(selection_data.find_first_of('\r')!=synfig::String::npos)
			selection_data.erase(selection_data.begin()+selection_data.find_first_of('\r'));

		std::stringstream stream(selection_data);

		while(stream)
		{
			synfig::String filename,URI;
			getline(stream,filename);

			// If we don't have a filename, move on.
			if(filename.empty())
				continue;

			// Make sure this URL is of the "file://" type.
			URI=String(filename.begin(),filename.begin()+sizeof("file://")-1);
			if(URI!="file://")
			{
				synfig::warning("Unknown URI (%s) in \"%s\"",URI.c_str(),filename.c_str());
				continue;
			}

			// Strip the "file://" part from the filename
			filename=synfig::String(filename.begin()+sizeof("file://")-1,filename.end());

			synfig::info("Attempting to open "+filename);
			if(App::open(filename))
				success=true;
			else
				synfig::error("Drop failed: Unable to open "+filename);
		}
	}
	else
		synfig::error("Drop failed: bad selection data");

	// Finish the drag
	context->drag_finish(success, false, time);
}

void
DockBook::on_drag_data_received(const Glib::RefPtr<Gdk::DragContext>& context, int, int, const Gtk::SelectionData& selection_data, guint, guint time)
{
	if ((selection_data.get_length() >= 0) && (selection_data.get_format() == 8))
	{
		Dockable& dockable(**reinterpret_cast<Dockable**>(const_cast<guint8*>(selection_data.get_data())));
		if(dockable.get_parent()!=this)
			add(dockable);
		dockable.present();
		context->drag_finish(true, false, time);
		return;
	}

	context->drag_finish(false, false, time);
}

void ScriptSlots::onScriptDragNDropDataReceived(
    const Glib::RefPtr<Gdk::DragContext>& context, int, int,
    const Gtk::SelectionData& selection_data, guint, guint time)
{
    gig::Script* script = *((gig::Script**) selection_data.get_data());
    if (script && selection_data.get_length() == sizeof(gig::Script*)) {
        std::cout << "Drop received script \"" << script->Name << "\"" << std::endl;
        m_instrument->AddScriptSlot(script);
        appendNewSlot(script);
        // drop success
        context->drop_reply(true, time);
    } else {
        // drop failed
        context->drop_reply(false, time);
    }
}