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livetrax/libs/canvas/container.cc

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/*
* 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()) {
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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;
}