13
0
livetrax/libs/canvas/flag.cc
Paul Davis 6473cc7cb4 drop use of bounding box to determine whether an item covers a point; add Item::covers(Duple const&)
Default implementation for Item still uses bounding box, but specializations for Arc (Circle), Polygon, Line and PolyLine have been added
2013-11-04 11:56:10 -05:00

79 lines
2.0 KiB
C++

/*
Copyright (C) 2011-2013 Paul Davis
Author: Carl Hetherington <cth@carlh.net>
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "canvas/flag.h"
#include "canvas/text.h"
#include "canvas/rectangle.h"
#include "canvas/line.h"
using namespace std;
using namespace ArdourCanvas;
Flag::Flag (Group* parent, Distance height, Color outline_color, Color fill_color, Duple position)
: Group (parent)
, _height (height)
, _outline_color (outline_color)
, _fill_color (fill_color)
{
_text = new Text (this);
_text->set_alignment (Pango::ALIGN_CENTER);
_text->set_color (_outline_color);
_line = new Line (this);
_line->set_outline_color (_outline_color);
set_height (_height);
_rectangle = new Rectangle (this);
_rectangle->set_outline_color (_outline_color);
_rectangle->set_fill_color (_fill_color);
_text->raise_to_top ();
set_position (position);
}
void
Flag::set_text (string const & text)
{
_text->set (text);
boost::optional<Rect> bbox = _text->bounding_box ();
assert (bbox);
Duple flag_size (bbox.get().width() + 10, bbox.get().height() + 3);
_text->set_position (flag_size / 2);
_rectangle->set (Rect (0, 0, flag_size.x, flag_size.y));
}
void
Flag::set_height (Distance)
{
_line->set (Duple (0, 0), Duple (0, _height));
}
bool
Flag::covers (Duple const & point) const
{
if (_rectangle) {
return _rectangle->covers (point);
}
return false;
}