120 lines
2.8 KiB
C++
120 lines
2.8 KiB
C++
/*
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* Copyright (C) 2012 Carl Hetherington <carl@carlh.net>
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* Copyright (C) 2013-2014 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2015-2017 Robin Gareus <robin@gareus.org>
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <cairomm/cairomm.h>
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#include "pbd/compose.h"
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#include "pbd/convert.h"
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#include "canvas/fill.h"
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#include "canvas/item.h"
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#include "canvas/types.h"
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using namespace std;
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using namespace ArdourCanvas;
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Fill::Fill (Item& self)
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: _self (self)
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, _fill_color (0x000000ff)
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, _fill (true)
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, _transparent (false)
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{
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}
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void
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Fill::set_fill_color (Gtkmm2ext::Color color)
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{
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if (_fill_color != color) {
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_self.begin_visual_change ();
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_fill_color = color;
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double r, g, b, a;
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Gtkmm2ext::color_to_rgba (color, r, g, b, a);
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if (a == 0.0) {
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_transparent = true;
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} else {
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_transparent = false;
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}
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_self.end_visual_change ();
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}
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}
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void
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Fill::set_fill (bool fill)
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{
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if (_fill != fill) {
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_self.begin_visual_change ();
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_fill = fill;
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_self.end_visual_change ();
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}
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}
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void
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Fill::setup_fill_context (Cairo::RefPtr<Cairo::Context> context) const
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{
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if (_pattern) {
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context->set_source (_pattern);
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} else {
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Gtkmm2ext::set_source_rgba (context, _fill_color);
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}
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}
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void
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Fill::setup_gradient_context (Cairo::RefPtr<Cairo::Context> context, Rect const & self, Duple const & draw_origin) const
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{
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Cairo::RefPtr<Cairo::LinearGradient> _gradient;
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if (_vertical_gradient) {
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_gradient = Cairo::LinearGradient::create (draw_origin.x, self.y0, draw_origin.x, self.y1);
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} else {
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_gradient = Cairo::LinearGradient::create (self.x0, draw_origin.y, self.x1, draw_origin.y);
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}
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for (StopList::const_iterator s = _stops.begin(); s != _stops.end(); ++s) {
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double r, g, b, a;
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Gtkmm2ext::color_to_rgba (s->second, r, g, b, a);
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_gradient->add_color_stop_rgba (s->first, r, g, b, a);
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}
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context->set_source (_gradient);
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}
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void
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Fill::set_pattern (Cairo::RefPtr<Cairo::Pattern> p)
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{
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_pattern = p;
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}
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void
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Fill::set_gradient (StopList const & stops, bool vertical)
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{
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_self.begin_visual_change ();
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if (stops.empty()) {
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_stops.clear ();
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} else {
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_stops = stops;
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_vertical_gradient = vertical;
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}
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_self.end_visual_change ();
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}
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