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 sigc;
  29 using namespace ARDOUR;
  30
  31 MidiChannelSelector::MidiChannelSelector(int n_rows, int n_columns, int start_row, int start_column)
  32         : Table(n_rows, n_columns, true)
  33         , _recursion_counter(0)
  34 {
  35         assert(n_rows >= 4);
  36         assert(n_rows >= start_row + 4);
  37         assert(n_columns >=4);
  38         assert(n_columns >= start_column + 4);
  39
  40         property_column_spacing() = 0;
  41         property_row_spacing() = 0;
  42
  43         uint8_t channel_nr = 0;
  44         for (int row = 0; row < 4; ++row) {
  45                 for (int column = 0; column < 4; ++column) {
  46                         ostringstream channel;
  47                         channel << int(++channel_nr);
  48                         _button_labels[row][column].set_text(channel.str());
  49                         _button_labels[row][column].set_justify(JUSTIFY_RIGHT);
  50                         _buttons[row][column].add(_button_labels[row][column]);
  51                         _buttons[row][column].signal_toggled().connect(
  52                                 bind(
  53                                         mem_fun(this, &MidiChannelSelector::button_toggled),
  54                                         &_buttons[row][column],
  55                                         channel_nr - 1));
  56
  57                         int table_row    = start_row + row;
  58                         int table_column = start_column + column;
  59                         attach(_buttons[row][column], table_column, table_column + 1, table_row, table_row + 1);
  60                 }
  61         }
  62 }
  63
  64 MidiChannelSelector::~MidiChannelSelector()
  65 {
  66 }
  67
  68 void
  69 MidiChannelSelector::set_channel_colors(const uint32_t new_channel_colors[16])
  70 {
  71         for (int row = 0; row < 4; ++row) {
  72                 for (int column = 0; column < 4; ++column) {
  73                         char color_normal[8];
  74                         char color_active[8];
  75                         snprintf(color_normal, 8, "#%x", UINT_INTERPOLATE(new_channel_colors[row * 4 + column], 0x000000ff, 0.6));
  76                         snprintf(color_active, 8, "#%x", new_channel_colors[row * 4 + column]);
  77                         _buttons[row][column].modify_bg(STATE_NORMAL, Gdk::Color(color_normal));
  78                         _buttons[row][column].modify_bg(STATE_ACTIVE, Gdk::Color(color_active));
  79                 }
  80         }
  81 }
  82
  83 void
  84 MidiChannelSelector::set_default_channel_color()
  85 {
  86         for (int row = 0; row < 4; ++row) {
  87                 for (int column = 0; column < 4; ++column) {
  88                         _buttons[row][column].unset_bg(STATE_NORMAL);
  89                         _buttons[row][column].unset_bg(STATE_ACTIVE);
  90                 }
  91         }
  92 }
  93
  94 SingleMidiChannelSelector::SingleMidiChannelSelector(uint8_t active_channel)
  95         : MidiChannelSelector()
  96 {
  97         _last_active_button = 0;
  98         ToggleButton* button = &_buttons[active_channel / 4][active_channel % 4];
  99         _active_channel = active_channel;
 100         button->set_active(true);
 101         _last_active_button = button;
 102 }
 103
 104 void
 105 SingleMidiChannelSelector::button_toggled(ToggleButton* button, uint8_t channel)
 106 {
 107         ++_recursion_counter;
 108         if (_recursion_counter == 1) {
 109                 // if the current button is active it must
 110                 // be different from the first one
 111                 if (button->get_active()) {
 112                         if (_last_active_button) {
 113                                 _last_active_button->set_active(false);
 114                                 _active_channel = channel;
 115                                 _last_active_button = button;
 116                                 channel_selected.emit(channel);
 117                         }
 118                 } else {
 119                         // if not, the user pressed the already active button
 120                         button->set_active(true);
 121                         _active_channel = channel;
 122                 }
 123         }
 124         --_recursion_counter;
 125 }
 126
 127 MidiMultipleChannelSelector::MidiMultipleChannelSelector(ChannelMode mode, uint16_t mask)
 128         : MidiChannelSelector(4, 6, 0, 0)
 129         , _channel_mode(mode)
 130 {
 131         _select_all.add(*manage(new Label(_("All"))));
 132         _select_all.signal_clicked().connect(
 133                         bind(mem_fun(this, &MidiMultipleChannelSelector::select_all), true));
 134
 135         _select_none.add(*manage(new Label(_("None"))));
 136         _select_none.signal_clicked().connect(
 137                         bind(mem_fun(this, &MidiMultipleChannelSelector::select_all), false));
 138
 139         _invert_selection.add(*manage(new Label(_("Invert"))));
 140         _invert_selection.signal_clicked().connect(
 141                         mem_fun(this, &MidiMultipleChannelSelector::invert_selection));
 142
 143         _force_channel.add(*manage(new Label(_("Force"))));
 144         _force_channel.signal_toggled().connect(
 145                         mem_fun(this, &MidiMultipleChannelSelector::force_channels_button_toggled));
 146
 147         set_homogeneous(false);
 148         attach(*manage(new VSeparator()), 4, 5, 0, 4, SHRINK, FILL, 0, 0);
 149         //set_row_spacing(4, -5);
 150         attach(_select_all,       5, 6, 0, 1);
 151         attach(_select_none,      5, 6, 1, 2);
 152         attach(_invert_selection, 5, 6, 2, 3);
 153         attach(_force_channel,    5, 6, 3, 4);
 154
 155         set_selected_channels(mask);
 156 }
 157
 158 MidiMultipleChannelSelector::~MidiMultipleChannelSelector()
 159 {
 160         mode_changed.clear();
 161 }
 162
 163 void
 164 MidiMultipleChannelSelector::set_channel_mode(ChannelMode mode, uint16_t mask)
 165 {
 166         switch (mode) {
 167         case AllChannels:
 168                 _force_channel.set_active(false);
 169                 set_selected_channels(0xFFFF);
 170                 break;
 171         case FilterChannels:
 172                 _force_channel.set_active(false);
 173                 set_selected_channels(mask);
 174                 break;
 175         case ForceChannel:
 176                 _force_channel.set_active(true);
 177                 for (uint16_t i = 0; i < 16; i++) {
 178                         ToggleButton* button = &_buttons[i / 4][i % 4];
 179                         button->set_active(i == mask);
 180                 }
 181         }
 182 }
 183
 184 uint16_t
 185 MidiMultipleChannelSelector::get_selected_channels() const
 186 {
 187         uint16_t selected_channels = 0;
 188         for (uint16_t i = 0; i < 16; i++) {
 189                 const ToggleButton* button = &_buttons[i / 4][i % 4];
 190                 if (button->get_active()) {
 191                         selected_channels |= (1L << i);
 192                 }
 193         }
 194
 195         return selected_channels;
 196 }
 197
 198 void
 199 MidiMultipleChannelSelector::set_selected_channels(uint16_t selected_channels)
 200 {
 201         for (uint16_t i = 0; i < 16; i++) {
 202                 ToggleButton* button = &_buttons[i / 4][i % 4];
 203                 if (selected_channels & (1L << i)) {
 204                         button->set_active(true);
 205                 } else {
 206                         button->set_active(false);
 207                 }
 208         }
 209 }
 210
 211 void
 212 MidiMultipleChannelSelector::button_toggled(ToggleButton */*button*/, uint8_t channel)
 213 {
 214         ++_recursion_counter;
 215         if (_recursion_counter == 1) {
 216                 if (_channel_mode == ForceChannel) {
 217                         mode_changed.emit(_channel_mode, channel);
 218                         set_selected_channels(1 << channel);
 219                 } else {
 220                         mode_changed.emit(_channel_mode, get_selected_channels());
 221                 }
 222         }
 223         --_recursion_counter;
 224 }
 225
 226 void
 227 MidiMultipleChannelSelector::force_channels_button_toggled()
 228 {
 229         if (_force_channel.get_active()) {
 230                 _channel_mode = ForceChannel;
 231                 bool found_first_active = false;
 232                 // leave only the first button enabled
 233                 uint16_t active_channel = 0;
 234                 for (int i = 0; i <= 15; i++) {
 235                         ToggleButton* button = &_buttons[i / 4][i % 4];
 236                         if (button->get_active()) {
 237                                 if (found_first_active) {
 238                                         ++_recursion_counter;
 239                                         button->set_active(false);
 240                                         --_recursion_counter;
 241                                 } else {
 242                                         found_first_active = true;
 243                                         active_channel = i;
 244                                 }
 245                         }
 246                 }
 247
 248                 if (!found_first_active) {
 249                         _buttons[0][0].set_active(true);
 250                 }
 251
 252                 _select_all.set_sensitive(false);
 253                 _select_none.set_sensitive(false);
 254                 _invert_selection.set_sensitive(false);
 255                 mode_changed.emit(_channel_mode, active_channel);
 256         } else {
 257                 _channel_mode = FilterChannels;
 258                 _select_all.set_sensitive(true);
 259                 _select_none.set_sensitive(true);
 260                 _invert_selection.set_sensitive(true);
 261                 mode_changed.emit(FilterChannels, get_selected_channels());
 262         }
 263 }
 264
 265 void
 266 MidiMultipleChannelSelector::select_all(bool on)
 267 {
 268         if (_channel_mode == ForceChannel)
 269                 return;
 270
 271         ++_recursion_counter;
 272         for (uint16_t i = 0; i < 16; i++) {
 273                 ToggleButton* button = &_buttons[i / 4][i % 4];
 274                 button->set_active(on);
 275         }
 276         --_recursion_counter;
 277         mode_changed.emit(_channel_mode, get_selected_channels());
 278 }
 279
 280 void
 281 MidiMultipleChannelSelector::invert_selection(void)
 282 {
 283         if (_channel_mode == ForceChannel)
 284                 return;
 285
 286         ++_recursion_counter;
 287         for (uint16_t i = 0; i < 16; i++) {
 288                 ToggleButton* button = &_buttons[i / 4][i % 4];
 289                 if (button->get_active()) {
 290                         button->set_active(false);
 291                 } else {
 292                         button->set_active(true);
 293                 }
 294         }
 295         --_recursion_counter;
 296         mode_changed.emit(_channel_mode, get_selected_channels());
 297 }
 298