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/*
* Copyright (C) 2012 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2013-2014 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2015-2017 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.
*/
#include <cairomm/cairomm.h>
#include "pbd/compose.h"
#include "pbd/convert.h"
#include "canvas/fill.h"
#include "canvas/item.h"
#include "canvas/types.h"
using namespace std;
using namespace ArdourCanvas;
Fill::Fill (Item& self)
: _self (self)
, _fill_color (0x000000ff)
, _fill (true)
, _transparent (false)
{
}
void
Fill::set_fill_color (Gtkmm2ext::Color color)
{
if (_fill_color != color) {
_self.begin_visual_change ();
_fill_color = color;
double r, g, b, a;
Gtkmm2ext::color_to_rgba (color, r, g, b, a);
if (a == 0.0) {
_transparent = true;
} else {
_transparent = false;
}
_self.end_visual_change ();
}
}
void
Fill::set_fill (bool fill)
{
if (_fill != fill) {
_self.begin_visual_change ();
_fill = fill;
_self.end_visual_change ();
}
}
void
Fill::setup_fill_context (Cairo::RefPtr<Cairo::Context> context) const
{
if (_pattern) {
context->set_source (_pattern);
} else {
Gtkmm2ext::set_source_rgba (context, _fill_color);
}
}
void
Fill::setup_gradient_context (Cairo::RefPtr<Cairo::Context> context, Rect const & self, Duple const & draw_origin) const
{
Cairo::RefPtr<Cairo::LinearGradient> _gradient;
if (_vertical_gradient) {
_gradient = Cairo::LinearGradient::create (draw_origin.x, self.y0, draw_origin.x, self.y1);
} else {
_gradient = Cairo::LinearGradient::create (self.x0, draw_origin.y, self.x1, draw_origin.y);
}
for (StopList::const_iterator s = _stops.begin(); s != _stops.end(); ++s) {
double r, g, b, a;
Gtkmm2ext::color_to_rgba (s->second, r, g, b, a);
_gradient->add_color_stop_rgba (s->first, r, g, b, a);
}
context->set_source (_gradient);
}
void
Fill::set_pattern (Cairo::RefPtr<Cairo::Pattern> p)
{
_pattern = p;
}
void
Fill::set_gradient (StopList const & stops, bool vertical)
{
_self.begin_visual_change ();
if (stops.empty()) {
_stops.clear ();
} else {
_stops = stops;
_vertical_gradient = vertical;
}
_self.end_visual_change ();
}
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