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                         _buttons[row][column].set_widget_name (X_("MidiChannelSelectorButton"));
  56
  57                         _buttons[row][column].signal_button_release_event().connect(
  58                                 sigc::mem_fun(this, &MidiChannelSelector::was_clicked), false);
  59
  60                         int table_row    = start_row + row;
  61                         int table_column = start_column + column;
  62                         attach(_buttons[row][column], table_column, table_column + 1, table_row, table_row + 1);
  63                 }
  64         }
  65 }
  66
  67 MidiChannelSelector::~MidiChannelSelector()
  68 {
  69 }
  70
  71 bool
  72 MidiChannelSelector::was_clicked (GdkEventButton*)
  73 {
  74         clicked ();
  75         return false;
  76 }
  77
  78 void
  79 MidiChannelSelector::set_channel_colors(const uint32_t new_channel_colors[16])
  80 {
  81         for (int row = 0; row < 4; ++row) {
  82                 for (int column = 0; column < 4; ++column) {
  83                         char color_normal[8];
  84                         char color_active[8];
  85                         snprintf(color_normal, 8, "#%x", UINT_INTERPOLATE(new_channel_colors[row * 4 + column], 0x000000ff, 0.6));
  86                         snprintf(color_active, 8, "#%x", new_channel_colors[row * 4 + column]);
  87                         _buttons[row][column].modify_bg(STATE_NORMAL, Gdk::Color(color_normal));
  88                         _buttons[row][column].modify_bg(STATE_ACTIVE, Gdk::Color(color_active));
  89                 }
  90         }
  91 }
  92
  93 void
  94 MidiChannelSelector::set_default_channel_color()
  95 {
  96         for (int row = 0; row < 4; ++row) {
  97                 for (int column = 0; column < 4; ++column) {
  98                         _buttons[row][column].unset_fg (STATE_NORMAL);
  99                         _buttons[row][column].unset_fg (STATE_ACTIVE);
 100                         _buttons[row][column].unset_bg (STATE_NORMAL);
 101                         _buttons[row][column].unset_bg (STATE_ACTIVE);
 102                 }
 103         }
 104 }
 105
 106 SingleMidiChannelSelector::SingleMidiChannelSelector(uint8_t active_channel)
 107         : MidiChannelSelector()
 108 {
 109         _last_active_button = 0;
 110         ToggleButton* button = &_buttons[active_channel / 4][active_channel % 4];
 111         _active_channel = active_channel;
 112         button->set_active(true);
 113         _last_active_button = button;
 114 }
 115
 116 void
 117 SingleMidiChannelSelector::button_toggled(ToggleButton* button, uint8_t channel)
 118 {
 119         ++_recursion_counter;
 120         if (_recursion_counter == 1) {
 121                 // if the current button is active it must
 122                 // be different from the first one
 123                 if (button->get_active()) {
 124                         if (_last_active_button) {
 125                                 _last_active_button->set_active(false);
 126                                 _active_channel = channel;
 127                                 _last_active_button = button;
 128                                 channel_selected.emit(channel);
 129                         }
 130                 } else {
 131                         // if not, the user pressed the already active button
 132                         button->set_active(true);
 133                         _active_channel = channel;
 134                 }
 135         }
 136         --_recursion_counter;
 137 }
 138
 139 MidiMultipleChannelSelector::MidiMultipleChannelSelector(ChannelMode mode, uint16_t mask)
 140         : MidiChannelSelector(4, 6, 0, 0)
 141         , _channel_mode(mode)
 142 {
 143         _select_all.add(*manage(new Label(_("All"))));
 144         _select_all.signal_clicked().connect(
 145                         sigc::bind(sigc::mem_fun(this, &MidiMultipleChannelSelector::select_all), true));
 146
 147         _select_none.add(*manage(new Label(_("None"))));
 148         _select_none.signal_clicked().connect(
 149                         sigc::bind(sigc::mem_fun(this, &MidiMultipleChannelSelector::select_all), false));
 150
 151         _invert_selection.add(*manage(new Label(_("Invert"))));
 152         _invert_selection.signal_clicked().connect(
 153                         sigc::mem_fun(this, &MidiMultipleChannelSelector::invert_selection));
 154
 155         _force_channel.add(*manage(new Label(_("Force"))));
 156         _force_channel.signal_toggled().connect(
 157                         sigc::mem_fun(this, &MidiMultipleChannelSelector::force_channels_button_toggled));
 158
 159         set_homogeneous(false);
 160         attach(*manage(new VSeparator()), 4, 5, 0, 4, SHRINK, FILL, 0, 0);
 161         //set_row_spacing(4, -5);
 162         attach(_select_all,       5, 6, 0, 1);
 163         attach(_select_none,      5, 6, 1, 2);
 164         attach(_invert_selection, 5, 6, 2, 3);
 165         attach(_force_channel,    5, 6, 3, 4);
 166
 167         set_selected_channels(mask);
 168 }
 169
 170 MidiMultipleChannelSelector::~MidiMultipleChannelSelector()
 171 {
 172         mode_changed.clear();
 173 }
 174
 175 void
 176 MidiMultipleChannelSelector::set_channel_mode(ChannelMode mode, uint16_t mask)
 177 {
 178         switch (mode) {
 179         case AllChannels:
 180                 _force_channel.set_active(false);
 181                 set_selected_channels(0xFFFF);
 182                 break;
 183         case FilterChannels:
 184                 _force_channel.set_active(false);
 185                 set_selected_channels(mask);
 186                 break;
 187         case ForceChannel:
 188                 _force_channel.set_active(true);
 189                 for (uint16_t i = 0; i < 16; i++) {
 190                         ToggleButton* button = &_buttons[i / 4][i % 4];
 191                         button->set_active(i == mask);
 192                 }
 193         }
 194 }
 195
 196 uint16_t
 197 MidiMultipleChannelSelector::get_selected_channels() const
 198 {
 199         uint16_t selected_channels = 0;
 200         for (uint16_t i = 0; i < 16; i++) {
 201                 const ToggleButton* button = &_buttons[i / 4][i % 4];
 202                 if (button->get_active()) {
 203                         selected_channels |= (1L << i);
 204                 }
 205         }
 206
 207         return selected_channels;
 208 }
 209
 210 void
 211 MidiMultipleChannelSelector::set_selected_channels(uint16_t selected_channels)
 212 {
 213         for (uint16_t i = 0; i < 16; i++) {
 214                 ToggleButton* button = &_buttons[i / 4][i % 4];
 215                 if (selected_channels & (1L << i)) {
 216                         button->set_active(true);
 217                 } else {
 218                         button->set_active(false);
 219                 }
 220         }
 221 }
 222
 223 void
 224 MidiMultipleChannelSelector::button_toggled(ToggleButton */*button*/, uint8_t channel)
 225 {
 226         ++_recursion_counter;
 227         if (_recursion_counter == 1) {
 228                 if (_channel_mode == ForceChannel) {
 229                         mode_changed.emit(_channel_mode, channel);
 230                         set_selected_channels(1 << channel);
 231                 } else {
 232                         mode_changed.emit(_channel_mode, get_selected_channels());
 233                 }
 234         }
 235         --_recursion_counter;
 236 }
 237
 238 void
 239 MidiMultipleChannelSelector::force_channels_button_toggled()
 240 {
 241         if (_force_channel.get_active()) {
 242                 _channel_mode = ForceChannel;
 243                 bool found_first_active = false;
 244                 // leave only the first button enabled
 245                 uint16_t active_channel = 0;
 246                 for (int i = 0; i <= 15; i++) {
 247                         ToggleButton* button = &_buttons[i / 4][i % 4];
 248                         if (button->get_active()) {
 249                                 if (found_first_active) {
 250                                         ++_recursion_counter;
 251                                         button->set_active(false);
 252                                         --_recursion_counter;
 253                                 } else {
 254                                         found_first_active = true;
 255                                         active_channel = i;
 256                                 }
 257                         }
 258                 }
 259
 260                 if (!found_first_active) {
 261                         _buttons[0][0].set_active(true);
 262                 }
 263
 264                 _select_all.set_sensitive(false);
 265                 _select_none.set_sensitive(false);
 266                 _invert_selection.set_sensitive(false);
 267                 mode_changed.emit(_channel_mode, active_channel);
 268         } else {
 269                 _channel_mode = FilterChannels;
 270                 _select_all.set_sensitive(true);
 271                 _select_none.set_sensitive(true);
 272                 _invert_selection.set_sensitive(true);
 273                 mode_changed.emit(FilterChannels, get_selected_channels());
 274         }
 275 }
 276
 277 void
 278 MidiMultipleChannelSelector::select_all(bool on)
 279 {
 280         if (_channel_mode == ForceChannel)
 281                 return;
 282
 283         ++_recursion_counter;
 284         for (uint16_t i = 0; i < 16; i++) {
 285                 ToggleButton* button = &_buttons[i / 4][i % 4];
 286                 button->set_active(on);
 287         }
 288         --_recursion_counter;
 289         mode_changed.emit(_channel_mode, get_selected_channels());
 290 }
 291
 292 void
 293 MidiMultipleChannelSelector::invert_selection(void)
 294 {
 295         if (_channel_mode == ForceChannel)
 296                 return;
 297
 298         ++_recursion_counter;
 299         for (uint16_t i = 0; i < 16; i++) {
 300                 ToggleButton* button = &_buttons[i / 4][i % 4];
 301                 if (button->get_active()) {
 302                         button->set_active(false);
 303                 } else {
 304                         button->set_active(true);
 305                 }
 306         }
 307         --_recursion_counter;
 308         mode_changed.emit(_channel_mode, get_selected_channels());
 309 }
 310