2 Copyright (C) 2010 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 using namespace Gtkmm2ext;
36 , _fixed_diameter (false)
45 LED::render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t*)
47 cairo_t* cr = ctx->cobj();
48 if (!_fixed_diameter) {
49 _diameter = std::min (get_width(), get_height());
58 parent = get_parent ();
60 while (parent && !parent->get_has_window()) {
61 parent = parent->get_parent();
64 if (parent && parent->get_has_window()) {
65 style = parent->get_style ();
66 c = style->get_bg (parent->get_state());
69 c = style->get_bg (get_state());
73 cairo_rectangle(cr, 0, 0, _width, _height);
74 cairo_stroke_preserve(cr);
75 cairo_set_source_rgb(cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
79 cairo_translate(cr, get_width()/2, get_height()/2);
82 cairo_pattern_t *pat = cairo_pattern_create_linear (0.0, 0.0, 0.0, _diameter);
83 cairo_pattern_add_color_stop_rgba (pat, 0, 0,0,0, 0.4);
84 cairo_pattern_add_color_stop_rgba (pat, 1, 1,1,1, 0.7);
85 cairo_arc (cr, 0, 0, _diameter/2, 0, 2 * M_PI);
86 cairo_set_source (cr, pat);
88 cairo_pattern_destroy (pat);
91 cairo_set_source_rgb (cr, 0, 0, 0);
92 cairo_arc (cr, 0, 0, _diameter/2-2, 0, 2 * M_PI);
96 cairo_set_source_rgba (cr, _red, _green, _blue, (active_state() == Gtkmm2ext::ExplicitActive) ? 0.8 : 0.2);
97 cairo_arc (cr, 0, 0, _diameter/2-3, 0, 2 * M_PI);
101 cairo_scale(cr, 0.7, 0.7);
102 cairo_pattern_t *pat2 = cairo_pattern_create_linear (0.0, 0.0, 0.0, _diameter/2-3);
103 cairo_pattern_add_color_stop_rgba (pat2, 0, 1,1,1, active_state() ? 0.4 : 0.2);
104 cairo_pattern_add_color_stop_rgba (pat2, 1, 1,1,1, 0.0);
105 cairo_arc (cr, 0, 0, _diameter/2-3, 0, 2 * M_PI);
106 cairo_set_source (cr, pat2);
108 cairo_pattern_destroy (pat2);
114 LED::set_diameter (float d)
116 _diameter = (d*2) + 5.0;
118 if (_diameter != 0.0) {
119 _fixed_diameter = true;
128 set_colors_from_style ();
129 CairoWidget::on_realize ();
133 LED::on_size_request (Gtk::Requisition* req)
135 if (_fixed_diameter) {
136 req->width = _diameter;
137 req->height = _diameter;
139 CairoWidget::on_size_request (req);
144 LED::set_colors_from_style ()
146 RefPtr<Style> style = get_style();
149 switch (_visual_state) {
151 c = style->get_fg (STATE_NORMAL);
154 c = style->get_fg (STATE_ACTIVE);
158 _red = c.get_red_p ();
159 _green = c.get_green_p ();
160 _blue = c.get_blue_p ();