gtk2_ardour/editor_mixer.cc

   1 /*
   2     Copyright (C) 2003-2004 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     $Id$
  19 */
  20
  21 #include <gtkmm2ext/utils.h>
  22 #include <ardour/audioengine.h>
  23
  24 #include "editor.h"
  25 #include "mixer_strip.h"
  26 #include "ardour_ui.h"
  27 #include "selection.h"
  28 #include "audio_time_axis.h"
  29 #include "actions.h"
  30
  31 #include "i18n.h"
  32
  33 void
  34 Editor::editor_mixer_button_toggled ()
  35 {
  36         Glib::RefPtr<Gtk::Action> act = ActionManager::get_action (X_("Editor"), X_("show-editor-mixer"));
  37         if (act) {
  38                 Glib::RefPtr<Gtk::ToggleAction> tact = Glib::RefPtr<Gtk::ToggleAction>::cast_dynamic(act);
  39                 show_editor_mixer (tact->get_active());
  40         }
  41 }
  42
  43 void
  44 Editor::cms_deleted ()
  45 {
  46         current_mixer_strip = 0;
  47 }
  48
  49 void
  50 Editor::show_editor_mixer (bool yn)
  51 {
  52         show_editor_mixer_when_tracks_arrive = false;
  53
  54         if (yn) {
  55
  56                 if (current_mixer_strip == 0) {
  57
  58                         if (selection->tracks.empty()) {
  59
  60                                 if (track_views.empty()) {
  61                                         show_editor_mixer_when_tracks_arrive = true;
  62                                         return;
  63                                 }
  64
  65                                 for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
  66                                         AudioTimeAxisView* atv;
  67
  68                                         if ((atv = dynamic_cast<AudioTimeAxisView*> (*i)) != 0) {
  69
  70                                                 current_mixer_strip = new MixerStrip (*ARDOUR_UI::instance()->the_mixer(),
  71                                                                                       *session,
  72                                                                                       atv->route(), false);
  73
  74                                                 current_mixer_strip->GoingAway.connect (mem_fun(*this, &Editor::cms_deleted));
  75                                                 break;
  76                                         }
  77                                 }
  78
  79                         } else {
  80                                 for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
  81                                         AudioTimeAxisView* atv;
  82
  83                                         if ((atv = dynamic_cast<AudioTimeAxisView*> (*i)) != 0) {
  84
  85                                                 current_mixer_strip = new MixerStrip (*ARDOUR_UI::instance()->the_mixer(),
  86                                                                                       *session,
  87                                                                                       atv->route(), false);
  88                                                 current_mixer_strip->GoingAway.connect (mem_fun(*this, &Editor::cms_deleted));
  89                                                 break;
  90                                         }
  91                                 }
  92
  93                         }
  94
  95                         if (current_mixer_strip == 0) {
  96                                 return;
  97                         }
  98                 }
  99
 100                 if (current_mixer_strip->get_parent() == 0) {
 101                         current_mixer_strip->set_embedded (true);
 102                         current_mixer_strip->Hiding.connect (mem_fun(*this, &Editor::current_mixer_strip_hidden));
 103                         current_mixer_strip->GoingAway.connect (mem_fun(*this, &Editor::current_mixer_strip_removed));
 104                         current_mixer_strip->set_width (editor_mixer_strip_width);
 105
 106                         global_hpacker.pack_start (*current_mixer_strip, Gtk::PACK_SHRINK );
 107                         global_hpacker.reorder_child (*current_mixer_strip, 0);
 108
 109                         current_mixer_strip->show_all ();
 110                 }
 111
 112         } else {
 113
 114                 if (current_mixer_strip) {
 115                         editor_mixer_strip_width = current_mixer_strip->get_width ();
 116                         if (current_mixer_strip->get_parent() != 0) {
 117                                 global_hpacker.remove (*current_mixer_strip);
 118                         }
 119                 }
 120         }
 121 }
 122
 123 void
 124 Editor::set_selected_mixer_strip (TimeAxisView& view)
 125 {
 126         AudioTimeAxisView* at;
 127         bool show = false;
 128
 129         if (!session || (at = dynamic_cast<AudioTimeAxisView*>(&view)) == 0) {
 130                 return;
 131         }
 132
 133         if (current_mixer_strip) {
 134
 135                 /* might be nothing to do */
 136
 137                 if (current_mixer_strip->route() == at->route()) {
 138                         return;
 139                 }
 140
 141                 if (current_mixer_strip->get_parent()) {
 142                         show = true;
 143                 }
 144                 delete current_mixer_strip;
 145                 current_mixer_strip = 0;
 146         }
 147
 148         current_mixer_strip = new MixerStrip (*ARDOUR_UI::instance()->the_mixer(),
 149                                               *session,
 150                                               at->route());
 151         current_mixer_strip->GoingAway.connect (mem_fun(*this, &Editor::cms_deleted));
 152
 153         if (show) {
 154                 show_editor_mixer (true);
 155         }
 156 }
 157
 158 void
 159 Editor::update_current_screen ()
 160 {
 161         if (session && engine.running()) {
 162
 163                 nframes_t frame;
 164
 165                 frame = session->audible_frame();
 166
 167                 if (_dragging_playhead) {
 168                         goto almost_done;
 169                 }
 170
 171                 /* only update if the playhead is on screen or we are following it */
 172
 173                 if (_follow_playhead) {
 174
 175                         playhead_cursor->canvas_item.show();
 176
 177                         if (frame != last_update_frame) {
 178                                 const jack_nframes_t page_width = current_page_frames();
 179
 180                                 // Percentage width of the visible range to use as a scroll interval
 181                                 // Idea: snap this to the nearest bar/beat/tick/etc, would make scrolling much
 182                                 // less jarring when zoomed in.. and it would be fun to watch :)
 183                                 static const double scroll_pct = 3.0/4.0;
 184
 185                                 const jack_nframes_t rightmost_frame = leftmost_frame + page_width;
 186                                 const jack_nframes_t scroll_interval = (jack_nframes_t)(page_width * scroll_pct);
 187                                 const jack_nframes_t padding = (jack_nframes_t)floor((page_width-scroll_interval) / 2.0);
 188
 189                                 if (frame < leftmost_frame + padding || frame > rightmost_frame - padding) {
 190
 191                                         if (session->transport_speed() < 0) {
 192                                                 if (frame > scroll_interval) {
 193                                                         center_screen (frame - scroll_interval/2);
 194                                                 } else {
 195                                                         center_screen (scroll_interval);
 196                                                 }
 197                                         } else {
 198                                                 center_screen(frame + scroll_interval/2);
 199                                         }
 200                                 }
 201
 202                                 playhead_cursor->set_position (frame);
 203                         }
 204
 205                 } else {
 206
 207                         if (frame != last_update_frame) {
 208                                 if (frame < leftmost_frame || frame > leftmost_frame + current_page_frames()) {
 209                                         playhead_cursor->canvas_item.hide();
 210                                 } else {
 211                                         playhead_cursor->set_position (frame);
 212                                 }
 213                         }
 214                 }
 215
 216           almost_done:
 217                 last_update_frame = frame;
 218
 219                 if (current_mixer_strip) {
 220                         current_mixer_strip->fast_update ();
 221                 }
 222
 223         }
 224 }
 225
 226 void
 227 Editor::current_mixer_strip_removed ()
 228 {
 229         if (current_mixer_strip) {
 230                 /* it is being deleted */
 231                 current_mixer_strip = 0;
 232         }
 233 }
 234
 235 void
 236 Editor::current_mixer_strip_hidden ()
 237 {
 238         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
 239
 240                 AudioTimeAxisView* tmp;
 241
 242                 if ((tmp = dynamic_cast<AudioTimeAxisView*>(*i)) != 0) {
 243                         if (tmp->route() == current_mixer_strip->route()) {
 244                                 (*i)->set_selected (false);
 245                                 break;
 246                         }
 247                 }
 248         }
 249
 250         Glib::RefPtr<Gtk::Action> act = ActionManager::get_action (X_("Editor"), X_("show-editor-mixer"));
 251         if (act) {
 252                 Glib::RefPtr<Gtk::ToggleAction> tact = Glib::RefPtr<Gtk::ToggleAction>::cast_dynamic(act);
 253                 tact->set_active (false);
 254         }
 255 }
 256
 257 void
 258 Editor::session_going_away ()
 259 {
 260         for (vector<sigc::connection>::iterator i = session_connections.begin(); i != session_connections.end(); ++i) {
 261                 (*i).disconnect ();
 262         }
 263
 264         stop_scrolling ();
 265         selection->clear ();
 266         cut_buffer->clear ();
 267
 268         clicked_regionview = 0;
 269         clicked_axisview = 0;
 270         clicked_routeview = 0;
 271         clicked_crossfadeview = 0;
 272         entered_regionview = 0;
 273         entered_track = 0;
 274         latest_regionview = 0;
 275         last_update_frame = 0;
 276         drag_info.item = 0;
 277         last_canvas_frame = 0;
 278
 279         /* hide all tracks */
 280
 281         hide_all_tracks (false);
 282
 283         /* rip everything out of the list displays */
 284
 285         region_list_display.set_model (Glib::RefPtr<Gtk::TreeStore>(0));
 286         route_list_display.set_model (Glib::RefPtr<Gtk::TreeStore>(0));
 287         named_selection_display.set_model (Glib::RefPtr<Gtk::TreeStore>(0));
 288         edit_group_display.set_model (Glib::RefPtr<Gtk::TreeStore>(0));
 289
 290         region_list_model->clear ();
 291         route_display_model->clear ();
 292         named_selection_model->clear ();
 293         group_model->clear ();
 294
 295         region_list_display.set_model (region_list_model);
 296         route_list_display.set_model (route_display_model);
 297         named_selection_display.set_model (named_selection_model);
 298         edit_group_display.set_model (group_model);
 299
 300         edit_cursor_clock.set_session (0);
 301         zoom_range_clock.set_session (0);
 302         nudge_clock.set_session (0);
 303
 304         /* put editor/mixer toggle button in off position and disable until a new session is loaded */
 305
 306         editor_mixer_button.set_active(false);
 307         editor_mixer_button.set_sensitive(false);
 308         /* clear tempo/meter rulers */
 309
 310         remove_metric_marks ();
 311         hide_measures ();
 312         clear_marker_display ();
 313
 314         if (current_bbt_points) {
 315                 delete current_bbt_points;
 316                 current_bbt_points = 0;
 317         }
 318
 319         /* mixer strip will be deleted all by itself
 320            when its route is deleted.
 321         */
 322
 323         current_mixer_strip = 0;
 324
 325         set_title (_("ardour: editor"));
 326
 327         session = 0;
 328 }