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/*
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 <algorithm>
#include <cairomm/context.h>
#include "pbd/compose.h"
#include "canvas/line.h"
#include "canvas/types.h"
#include "canvas/debug.h"
#include "canvas/utils.h"
#include "canvas/canvas.h"
using namespace std;
using namespace ArdourCanvas;
Line::Line (Group* parent)
: Item (parent)
, Outline (parent)
{
}
void
Line::compute_bounding_box () const
{
Rect bbox;
bbox.x0 = min (_points[0].x, _points[1].x);
bbox.y0 = min (_points[0].y, _points[1].y);
bbox.x1 = max (_points[0].x, _points[1].x);
bbox.y1 = max (_points[0].y, _points[1].y);
bbox = bbox.expand (_outline_width / 2);
_bounding_box = bbox;
_bounding_box_dirty = false;
}
void
Line::render (Rect const & /*area*/, Cairo::RefPtr<Cairo::Context> context) const
{
setup_outline_context (context);
context->move_to (_points[0].x, _points[0].y);
context->line_to (_points[1].x, _points[1].y);
context->stroke ();
}
void
Line::set (Duple a, Duple b)
{
begin_change ();
_points[0] = a;
_points[1] = b;
_bounding_box_dirty = true;
end_change ();
DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: line change\n");
}
void
Line::set_x0 (Coord x0)
{
begin_change ();
_points[0].x = x0;
_bounding_box_dirty = true;
end_change ();
DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: line change\n");
}
void
Line::set_y0 (Coord y0)
{
begin_change ();
_points[0].y = y0;
_bounding_box_dirty = true;
end_change ();
DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: line change\n");
}
void
Line::set_x1 (Coord x1)
{
begin_change ();
_points[1].x = x1;
_bounding_box_dirty = true;
end_change ();
DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: line change\n");
}
void
Line::set_y1 (Coord y1)
{
begin_change ();
_points[1].y = y1;
_bounding_box_dirty = true;
end_change ();
DEBUG_TRACE (PBD::DEBUG::CanvasItemsDirtied, "canvas item dirty: line change\n");
}
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