13
0
livetrax/libs/canvas/canvas/framed_curve.h

67 lines
1.7 KiB
C++

/*
* Copyright (C) 2016 Nick Mainsbridge <mainsbridge@gmail.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.
*/
#ifndef __CANVAS_FRAMED_CURVE_H__
#define __CANVAS_FRAMED_CURVE_H__
#include "canvas/visibility.h"
#include "canvas/interpolated_curve.h"
#include "canvas/poly_item.h"
#include "canvas/fill.h"
/* similar to a Curve, with the first point being a height definition rather than a point to
interpolate.
*/
namespace ArdourCanvas {
class LIBCANVAS_API FramedCurve : public PolyItem, public InterpolatedCurve
{
public:
FramedCurve (Canvas*);
FramedCurve (Item*);
enum CurveFill {
None,
Inside,
Outside,
};
void compute_bounding_box () const;
void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
void set (Points const &);
void set_points_per_segment (uint32_t n);
bool covers (Duple const &) const;
void set_fill_mode (CurveFill cf) { curve_fill = cf; }
private:
Points samples;
Points::size_type n_samples;
uint32_t points_per_segment;
CurveFill curve_fill;
void interpolate ();
};
}
#endif