2 * Copyright (C) 2010-2012 Paul Davis <paul@linuxaudiosystems.com>
3 * Copyright (C) 2011 David Robillard <d@drobilla.net>
4 * Copyright (C) 2014-2017 Robin Gareus <robin@gareus.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
30 using namespace Gtkmm2ext;
37 , _fixed_diameter (false)
46 LED::render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t*)
48 cairo_t* cr = ctx->cobj();
49 if (!_fixed_diameter) {
50 _diameter = std::min (get_width(), get_height());
59 parent = get_parent ();
61 while (parent && !parent->get_has_window()) {
62 parent = parent->get_parent();
65 if (parent && parent->get_has_window()) {
66 style = parent->get_style ();
67 c = style->get_bg (parent->get_state());
70 c = style->get_bg (get_state());
74 cairo_rectangle(cr, 0, 0, _width, _height);
75 cairo_stroke_preserve(cr);
76 cairo_set_source_rgb(cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
80 cairo_translate(cr, get_width()/2, get_height()/2);
83 cairo_pattern_t *pat = cairo_pattern_create_linear (0.0, 0.0, 0.0, _diameter);
84 cairo_pattern_add_color_stop_rgba (pat, 0, 0,0,0, 0.4);
85 cairo_pattern_add_color_stop_rgba (pat, 1, 1,1,1, 0.7);
86 cairo_arc (cr, 0, 0, _diameter/2, 0, 2 * M_PI);
87 cairo_set_source (cr, pat);
89 cairo_pattern_destroy (pat);
92 cairo_set_source_rgb (cr, 0, 0, 0);
93 cairo_arc (cr, 0, 0, _diameter/2-2, 0, 2 * M_PI);
97 cairo_set_source_rgba (cr, _red, _green, _blue, (active_state() == Gtkmm2ext::ExplicitActive) ? 0.8 : 0.2);
98 cairo_arc (cr, 0, 0, _diameter/2-3, 0, 2 * M_PI);
102 cairo_scale(cr, 0.7, 0.7);
103 cairo_pattern_t *pat2 = cairo_pattern_create_linear (0.0, 0.0, 0.0, _diameter/2-3);
104 cairo_pattern_add_color_stop_rgba (pat2, 0, 1,1,1, active_state() ? 0.4 : 0.2);
105 cairo_pattern_add_color_stop_rgba (pat2, 1, 1,1,1, 0.0);
106 cairo_arc (cr, 0, 0, _diameter/2-3, 0, 2 * M_PI);
107 cairo_set_source (cr, pat2);
109 cairo_pattern_destroy (pat2);
115 LED::set_diameter (float d)
117 _diameter = (d*2) + 5.0;
119 if (_diameter != 0.0) {
120 _fixed_diameter = true;
129 set_colors_from_style ();
130 CairoWidget::on_realize ();
134 LED::on_size_request (Gtk::Requisition* req)
136 if (_fixed_diameter) {
137 req->width = _diameter;
138 req->height = _diameter;
140 CairoWidget::on_size_request (req);
145 LED::set_colors_from_style ()
147 RefPtr<Style> style = get_style();
150 switch (_visual_state) {
152 c = style->get_fg (STATE_NORMAL);
155 c = style->get_fg (STATE_ACTIVE);
159 _red = c.get_red_p ();
160 _green = c.get_green_p ();
161 _blue = c.get_blue_p ();