91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
/*
|
|
* Copyright (C) 2014-2015 Paul Davis <paul@linuxaudiosystems.com>
|
|
* Copyright (C) 2014-2017 Robin Gareus <robin@gareus.org>
|
|
*
|
|
* 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_XFADECURVE_H__
|
|
#define __CANVAS_XFADECURVE_H__
|
|
|
|
#include "canvas/visibility.h"
|
|
#include "canvas/item.h"
|
|
#include "canvas/curve.h"
|
|
|
|
namespace ArdourCanvas {
|
|
|
|
class LIBCANVAS_API XFadeCurve : public Item, public InterpolatedCurve
|
|
{
|
|
public:
|
|
enum XFadePosition {
|
|
Start,
|
|
End,
|
|
};
|
|
|
|
XFadeCurve (Canvas *);
|
|
XFadeCurve (Canvas *, XFadePosition);
|
|
XFadeCurve (Item*);
|
|
XFadeCurve (Item*, XFadePosition);
|
|
|
|
void set_fade_position (XFadePosition xfp) { _xfadeposition = xfp; }
|
|
void set_show_background_fade (bool show) { show_background_fade = show; }
|
|
|
|
void compute_bounding_box () const;
|
|
void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
|
|
|
|
void set_points_per_segment (uint32_t n);
|
|
void set_inout (Points const & in, Points const & out);
|
|
|
|
void set_outline_color (Gtkmm2ext::Color c) {
|
|
begin_visual_change ();
|
|
_outline_color = c;
|
|
end_visual_change ();
|
|
};
|
|
|
|
void set_fill_color (Gtkmm2ext::Color c) {
|
|
begin_visual_change ();
|
|
_fill_color = c;
|
|
end_visual_change ();
|
|
}
|
|
|
|
private:
|
|
struct CanvasCurve {
|
|
CanvasCurve() : n_samples(0) { }
|
|
Points points;
|
|
Points samples;
|
|
Points::size_type n_samples;
|
|
};
|
|
|
|
Cairo::Path * get_path(Rect const &, Cairo::RefPtr<Cairo::Context>, CanvasCurve const &) const;
|
|
void close_path(Rect const &, Cairo::RefPtr<Cairo::Context>, CanvasCurve const &p, bool) const;
|
|
|
|
uint32_t points_per_segment;
|
|
|
|
CanvasCurve _in;
|
|
CanvasCurve _out;
|
|
|
|
XFadePosition _xfadeposition;
|
|
Gtkmm2ext::Color _outline_color;
|
|
Gtkmm2ext::Color _fill_color;
|
|
|
|
bool show_background_fade;
|
|
|
|
void interpolate ();
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|