livetrax/libs/canvas/container.cc

/*
 * Copyright (C) 2012 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2014-2017 Paul Davis <paul@linuxaudiosystems.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "canvas/container.h"

using namespace ArdourCanvas;

Container::Container (Canvas* canvas)
	: Item (canvas)
{
}

Container::Container (Item* parent)
	: Item (parent)
{
}


Container::Container (Item* parent, Duple const & p)
	: Item (parent, p)
{
}

void
Container::prepare_for_render (Rect const & area) const
{
	Item::prepare_for_render_children (area);
}

void
Container::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
{
	if (fill() || outline()) {

		Rect bb (bounding_box());
		Rect self (item_to_window (bb, false));
		const Rect draw = self.intersection (area);

		if (fill()) {

			setup_fill_context (context);
			context->rectangle (draw.x0, draw.y0, draw.width(), draw.height());
			context->fill_preserve ();
		}

		if (outline()) {
			if (!fill()) {
				context->rectangle (draw.x0, draw.y0, draw.width(), draw.height());
			}
			setup_outline_context (context);
			context->stroke ();
		}
	}
	Item::render_children (area, context);
}

void
Container::compute_bounding_box () const
{
	_bounding_box = Rect ();
	add_child_bounding_boxes ();
	_bounding_box_dirty = false;
}