65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
/*
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Copyright (C) 2013 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __CANVAS_CURVE_H__
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#define __CANVAS_CURVE_H__
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#include "canvas/visibility.h"
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#include "canvas/interpolated_curve.h"
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#include "canvas/poly_item.h"
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#include "canvas/fill.h"
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namespace ArdourCanvas {
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class XFadeCurve;
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class LIBCANVAS_API Curve : public PolyItem, public InterpolatedCurve
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{
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public:
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Curve (Canvas*);
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Curve (Item*);
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enum CurveFill {
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None,
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Inside,
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Outside,
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};
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void compute_bounding_box () const;
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void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
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void set (Points const &);
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void set_points_per_segment (uint32_t n);
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bool covers (Duple const &) const;
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void set_fill_mode (CurveFill cf) { curve_fill = cf; }
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private:
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Points samples;
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Points::size_type n_samples;
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uint32_t points_per_segment;
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CurveFill curve_fill;
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void interpolate ();
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};
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}
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#endif
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