gtk2_ardour/midi_channel_selector.cc

   1 /*
   2     Copyright (C) 2008 Paul Davis
   3     Author: Hans Baier
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <sstream>
  21 #include "midi_channel_selector.h"
  22 #include "gtkmm/separator.h"
  23 #include "i18n.h"
  24 #include "rgb_macros.h"
  25
  26 using namespace std;
  27 using namespace Gtk;
  28 using namespace ARDOUR;
  29
  30 MidiChannelSelector::MidiChannelSelector(int n_rows, int n_columns, int start_row, int start_column)
  31         : Table(n_rows, n_columns, true)
  32         , _recursion_counter(0)
  33 {
  34         assert(n_rows >= 4);
  35         assert(n_rows >= start_row + 4);
  36         assert(n_columns >=4);
  37         assert(n_columns >= start_column + 4);
  38
  39         property_column_spacing() = 0;
  40         property_row_spacing() = 0;
  41
  42         uint8_t channel_nr = 0;
  43         for (int row = 0; row < 4; ++row) {
  44                 for (int column = 0; column < 4; ++column) {
  45                         ostringstream channel;
  46                         channel << int(++channel_nr);
  47                         _button_labels[row][column].set_text(channel.str());
  48                         _button_labels[row][column].set_justify(JUSTIFY_RIGHT);
  49                         _buttons[row][column].add(_button_labels[row][column]);
  50                         _buttons[row][column].signal_toggled().connect(
  51                                 sigc::bind(
  52                                         sigc::mem_fun(this, &MidiChannelSelector::button_toggled),
  53                                         &_buttons[row][column],
  54                                         channel_nr - 1));
  55
  56                         int table_row    = start_row + row;
  57                         int table_column = start_column + column;
  58                         attach(_buttons[row][column], table_column, table_column + 1, table_row, table_row + 1);
  59                 }
  60         }
  61 }
  62
  63 MidiChannelSelector::~MidiChannelSelector()
  64 {
  65 }
  66
  67 void
  68 MidiChannelSelector::set_channel_colors(const uint32_t new_channel_colors[16])
  69 {
  70         for (int row = 0; row < 4; ++row) {
  71                 for (int column = 0; column < 4; ++column) {
  72                         char color_normal[8];
  73                         char color_active[8];
  74                         snprintf(color_normal, 8, "#%x", UINT_INTERPOLATE(new_channel_colors[row * 4 + column], 0x000000ff, 0.6));
  75                         snprintf(color_active, 8, "#%x", new_channel_colors[row * 4 + column]);
  76                         _buttons[row][column].modify_bg(STATE_NORMAL, Gdk::Color(color_normal));
  77                         _buttons[row][column].modify_bg(STATE_ACTIVE, Gdk::Color(color_active));
  78                 }
  79         }
  80 }
  81
  82 void
  83 MidiChannelSelector::set_default_channel_color()
  84 {
  85         for (int row = 0; row < 4; ++row) {
  86                 for (int column = 0; column < 4; ++column) {
  87                         _buttons[row][column].unset_bg(STATE_NORMAL);
  88                         _buttons[row][column].unset_bg(STATE_ACTIVE);
  89                 }
  90         }
  91 }
  92
  93 SingleMidiChannelSelector::SingleMidiChannelSelector(uint8_t active_channel)
  94         : MidiChannelSelector()
  95 {
  96         _last_active_button = 0;
  97         ToggleButton* button = &_buttons[active_channel / 4][active_channel % 4];
  98         _active_channel = active_channel;
  99         button->set_active(true);
 100         _last_active_button = button;
 101 }
 102
 103 void
 104 SingleMidiChannelSelector::button_toggled(ToggleButton* button, uint8_t channel)
 105 {
 106         ++_recursion_counter;
 107         if (_recursion_counter == 1) {
 108                 // if the current button is active it must
 109                 // be different from the first one
 110                 if (button->get_active()) {
 111                         if (_last_active_button) {
 112                                 _last_active_button->set_active(false);
 113                                 _active_channel = channel;
 114                                 _last_active_button = button;
 115                                 channel_selected.emit(channel);
 116                         }
 117                 } else {
 118                         // if not, the user pressed the already active button
 119                         button->set_active(true);
 120                         _active_channel = channel;
 121                 }
 122         }
 123         --_recursion_counter;
 124 }
 125
 126 MidiMultipleChannelSelector::MidiMultipleChannelSelector(ChannelMode mode, uint16_t mask)
 127         : MidiChannelSelector(4, 6, 0, 0)
 128         , _channel_mode(mode)
 129 {
 130         _select_all.add(*manage(new Label(_("All"))));
 131         _select_all.signal_clicked().connect(
 132                         sigc::bind(sigc::mem_fun(this, &MidiMultipleChannelSelector::select_all), true));
 133
 134         _select_none.add(*manage(new Label(_("None"))));
 135         _select_none.signal_clicked().connect(
 136                         sigc::bind(sigc::mem_fun(this, &MidiMultipleChannelSelector::select_all), false));
 137
 138         _invert_selection.add(*manage(new Label(_("Invert"))));
 139         _invert_selection.signal_clicked().connect(
 140                         sigc::mem_fun(this, &MidiMultipleChannelSelector::invert_selection));
 141
 142         _force_channel.add(*manage(new Label(_("Force"))));
 143         _force_channel.signal_toggled().connect(
 144                         sigc::mem_fun(this, &MidiMultipleChannelSelector::force_channels_button_toggled));
 145
 146         set_homogeneous(false);
 147         attach(*manage(new VSeparator()), 4, 5, 0, 4, SHRINK, FILL, 0, 0);
 148         //set_row_spacing(4, -5);
 149         attach(_select_all,       5, 6, 0, 1);
 150         attach(_select_none,      5, 6, 1, 2);
 151         attach(_invert_selection, 5, 6, 2, 3);
 152         attach(_force_channel,    5, 6, 3, 4);
 153
 154         set_selected_channels(mask);
 155 }
 156
 157 MidiMultipleChannelSelector::~MidiMultipleChannelSelector()
 158 {
 159         mode_changed.clear();
 160 }
 161
 162 void
 163 MidiMultipleChannelSelector::set_channel_mode(ChannelMode mode, uint16_t mask)
 164 {
 165         switch (mode) {
 166         case AllChannels:
 167                 _force_channel.set_active(false);
 168                 set_selected_channels(0xFFFF);
 169                 break;
 170         case FilterChannels:
 171                 _force_channel.set_active(false);
 172                 set_selected_channels(mask);
 173                 break;
 174         case ForceChannel:
 175                 _force_channel.set_active(true);
 176                 for (uint16_t i = 0; i < 16; i++) {
 177                         ToggleButton* button = &_buttons[i / 4][i % 4];
 178                         button->set_active(i == mask);
 179                 }
 180         }
 181 }
 182
 183 uint16_t
 184 MidiMultipleChannelSelector::get_selected_channels() const
 185 {
 186         uint16_t selected_channels = 0;
 187         for (uint16_t i = 0; i < 16; i++) {
 188                 const ToggleButton* button = &_buttons[i / 4][i % 4];
 189                 if (button->get_active()) {
 190                         selected_channels |= (1L << i);
 191                 }
 192         }
 193
 194         return selected_channels;
 195 }
 196
 197 void
 198 MidiMultipleChannelSelector::set_selected_channels(uint16_t selected_channels)
 199 {
 200         for (uint16_t i = 0; i < 16; i++) {
 201                 ToggleButton* button = &_buttons[i / 4][i % 4];
 202                 if (selected_channels & (1L << i)) {
 203                         button->set_active(true);
 204                 } else {
 205                         button->set_active(false);
 206                 }
 207         }
 208 }
 209
 210 void
 211 MidiMultipleChannelSelector::button_toggled(ToggleButton */*button*/, uint8_t channel)
 212 {
 213         ++_recursion_counter;
 214         if (_recursion_counter == 1) {
 215                 if (_channel_mode == ForceChannel) {
 216                         mode_changed.emit(_channel_mode, channel);
 217                         set_selected_channels(1 << channel);
 218                 } else {
 219                         mode_changed.emit(_channel_mode, get_selected_channels());
 220                 }
 221         }
 222         --_recursion_counter;
 223 }
 224
 225 void
 226 MidiMultipleChannelSelector::force_channels_button_toggled()
 227 {
 228         if (_force_channel.get_active()) {
 229                 _channel_mode = ForceChannel;
 230                 bool found_first_active = false;
 231                 // leave only the first button enabled
 232                 uint16_t active_channel = 0;
 233                 for (int i = 0; i <= 15; i++) {
 234                         ToggleButton* button = &_buttons[i / 4][i % 4];
 235                         if (button->get_active()) {
 236                                 if (found_first_active) {
 237                                         ++_recursion_counter;
 238                                         button->set_active(false);
 239                                         --_recursion_counter;
 240                                 } else {
 241                                         found_first_active = true;
 242                                         active_channel = i;
 243                                 }
 244                         }
 245                 }
 246
 247                 if (!found_first_active) {
 248                         _buttons[0][0].set_active(true);
 249                 }
 250
 251                 _select_all.set_sensitive(false);
 252                 _select_none.set_sensitive(false);
 253                 _invert_selection.set_sensitive(false);
 254                 mode_changed.emit(_channel_mode, active_channel);
 255         } else {
 256                 _channel_mode = FilterChannels;
 257                 _select_all.set_sensitive(true);
 258                 _select_none.set_sensitive(true);
 259                 _invert_selection.set_sensitive(true);
 260                 mode_changed.emit(FilterChannels, get_selected_channels());
 261         }
 262 }
 263
 264 void
 265 MidiMultipleChannelSelector::select_all(bool on)
 266 {
 267         if (_channel_mode == ForceChannel)
 268                 return;
 269
 270         ++_recursion_counter;
 271         for (uint16_t i = 0; i < 16; i++) {
 272                 ToggleButton* button = &_buttons[i / 4][i % 4];
 273                 button->set_active(on);
 274         }
 275         --_recursion_counter;
 276         mode_changed.emit(_channel_mode, get_selected_channels());
 277 }
 278
 279 void
 280 MidiMultipleChannelSelector::invert_selection(void)
 281 {
 282         if (_channel_mode == ForceChannel)
 283                 return;
 284
 285         ++_recursion_counter;
 286         for (uint16_t i = 0; i < 16; i++) {
 287                 ToggleButton* button = &_buttons[i / 4][i % 4];
 288                 if (button->get_active()) {
 289                         button->set_active(false);
 290                 } else {
 291                         button->set_active(true);
 292                 }
 293         }
 294         --_recursion_counter;
 295         mode_changed.emit(_channel_mode, get_selected_channels());
 296 }
 297