1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/*
Copyright (C) 1998-99 Paul Davis
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., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#include <string>
#include <climits>
#include <midi++/channel.h>
#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm2ext/controller.h>
#include "i18n.h"
using namespace Gtkmm2ext;
Controller::Controller (Gtk::Adjustment *adj, MIDI::Port *p)
: MIDI::Controllable (p),
adjustment (adj),
prompter (Gtk::WIN_POS_MOUSE, 30000, false)
{
new_value_pending = false;
/* hear about MIDI control learning */
learning_started.connect
(mem_fun (*this, &Controller::midicontrol_prompt));
learning_stopped.connect
(mem_fun (*this, &Controller::midicontrol_unprompt));
}
void
Controller::midicontrol_prompt ()
{
string prompt = _("operate MIDI controller now");
prompter.set_text (prompt);
Gtkmm2ext::UI::instance()->touch_display (&prompter);
}
void
Controller::midicontrol_unprompt ()
{
Gtkmm2ext::UI::instance()->touch_display (&prompter);
}
int
Controller::update_controller_value (void *arg)
{
Controller *c = (Controller *) arg;
c->adjustment->set_value (c->new_value);
c->new_value_pending = false;
return FALSE;
}
void
Controller::set_value (float v)
{
/* This is called from a MIDI callback. It could happen
a thousand times a second, or more. Therefore, instead
of going straight to the X server, which may not work for
thread-related reasons, simply request an update whenever
the GTK main loop is idle.
*/
new_value = v;
if (!new_value_pending) {
new_value_pending = true;
Gtkmm2ext::UI::instance()->idle_add (update_controller_value, this);
}
}
|
