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