Do not try to restore Route solo state after clearing all solo state
[ardour.git] / gtk2_ardour / ardour_dropdown.cc
1 /*
2     Copyright (C) 2014 Paul Davis
3
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.
8
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.
13
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.
17
18 */
19
20 #include <iostream>
21 #include <cmath>
22 #include <algorithm>
23
24 #include <pangomm/layout.h>
25
26 #include "pbd/compose.h"
27 #include "pbd/error.h"
28 #include "pbd/stacktrace.h"
29
30 #include "gtkmm2ext/utils.h"
31 #include "gtkmm2ext/rgb_macros.h"
32 #include "gtkmm2ext/gui_thread.h"
33
34 #include "ardour/rc_configuration.h" // for widget prelight preference
35
36 #include "ardour_dropdown.h"
37
38 #include "pbd/i18n.h"
39
40 #define REFLECTION_HEIGHT 2
41
42 using namespace Gdk;
43 using namespace Gtk;
44 using namespace Glib;
45 using namespace PBD;
46 using namespace std;
47
48
49 ArdourDropdown::ArdourDropdown (Element e)
50         : _scrolling_disabled(false)
51 {
52 //      signal_button_press_event().connect (sigc::mem_fun(*this, &ArdourDropdown::on_mouse_pressed));
53         _menu.signal_size_request().connect (sigc::mem_fun(*this, &ArdourDropdown::menu_size_request));
54
55         _menu.set_reserve_toggle_size(false);
56
57         add_elements(e);
58         add_elements(ArdourButton::Menu);
59 }
60
61 ArdourDropdown::~ArdourDropdown ()
62 {
63 }
64
65 void
66 ArdourDropdown::menu_size_request(Requisition *req) {
67         req->width = max(req->width, get_allocation().get_width());
68 }
69
70 bool
71 ArdourDropdown::on_button_press_event (GdkEventButton* ev)
72 {
73         if (ev->type == GDK_BUTTON_PRESS) {
74                 Gtkmm2ext::anchored_menu_popup(&_menu, this, get_text(), 1, ev->time);
75         }
76         return true;
77 }
78
79 bool
80 ArdourDropdown::on_scroll_event (GdkEventScroll* ev)
81 {
82         using namespace Menu_Helpers;
83
84         if (_scrolling_disabled) {
85                 return false;
86         }
87
88         const MenuItem * current_active = _menu.get_active();
89         const MenuList& items = _menu.items ();
90         int c = 0;
91
92         if (!current_active) {
93                 return true;
94         }
95
96         /* work around another gtkmm API clusterfuck
97          * const MenuItem* get_active () const
98          * void set_active (guint index)
99          *
100          * also MenuList.activate_item does not actually
101          * set it as active in the menu.
102          *
103          */
104
105         switch (ev->direction) {
106                 case GDK_SCROLL_UP:
107
108                         for (MenuList::const_reverse_iterator i = items.rbegin(); i != items.rend(); ++i, ++c) {
109                                 if ( &(*i) != current_active) {
110                                         continue;
111                                 }
112                                 if (++i != items.rend()) {
113                                         c = items.size() - 2 - c;
114                                         assert(c >= 0);
115                                         _menu.set_active(c);
116                                         _menu.activate_item(*i);
117                                 }
118                                 break;
119                         }
120                         break;
121                 case GDK_SCROLL_DOWN:
122                         for (MenuList::const_iterator i = items.begin(); i != items.end(); ++i, ++c) {
123                                 if ( &(*i) != current_active) {
124                                         continue;
125                                 }
126                                 if (++i != items.end()) {
127                                         assert(c + 1 < (int) items.size());
128                                         _menu.set_active(c + 1);
129                                         _menu.activate_item(*i);
130                                 }
131                                 break;
132                         }
133                         break;
134                 default:
135                         break;
136         }
137         return true;
138 }
139
140 void
141 ArdourDropdown::clear_items ()
142 {
143         _menu.items ().clear ();
144 }
145
146 void
147 ArdourDropdown::AddMenuElem (Menu_Helpers::Element e)
148 {
149         using namespace Menu_Helpers;
150
151         MenuList& items = _menu.items ();
152
153         items.push_back (e);
154 }
155
156 void
157 ArdourDropdown::disable_scrolling()
158 {
159         _scrolling_disabled = true;
160 }