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         if (yn) {
  53
  54                 if (current_mixer_strip == 0) {
  55
  56                         if (selection->tracks.empty()) {
  57
  58                                 if (track_views.empty()) {
  59                                         return;
  60                                 }
  61
  62                                 for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
  63                                         AudioTimeAxisView* atv;
  64
  65                                         if ((atv = dynamic_cast<AudioTimeAxisView*> (*i)) != 0) {
  66
  67                                                 current_mixer_strip = new MixerStrip (*ARDOUR_UI::instance()->the_mixer(),
  68                                                                                       *session,
  69                                                                                       atv->route(), false);
  70
  71                                                 current_mixer_strip->GoingAway.connect (mem_fun(*this, &Editor::cms_deleted));
  72                                                 break;
  73                                         }
  74                                 }
  75
  76                         } else {
  77                                 for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
  78                                         AudioTimeAxisView* atv;
  79
  80                                         if ((atv = dynamic_cast<AudioTimeAxisView*> (*i)) != 0) {
  81
  82                                                 current_mixer_strip = new MixerStrip (*ARDOUR_UI::instance()->the_mixer(),
  83                                                                                       *session,
  84                                                                                       atv->route(), false);
  85                                                 current_mixer_strip->GoingAway.connect (mem_fun(*this, &Editor::cms_deleted));
  86                                                 break;
  87                                         }
  88                                 }
  89
  90                         }
  91
  92                         if (current_mixer_strip == 0) {
  93                                 return;
  94                         }
  95                 }
  96
  97                 if (current_mixer_strip->get_parent() == 0) {
  98                         current_mixer_strip->set_embedded (true);
  99                         current_mixer_strip->Hiding.connect (mem_fun(*this, &Editor::current_mixer_strip_hidden));
 100                         current_mixer_strip->GoingAway.connect (mem_fun(*this, &Editor::current_mixer_strip_removed));
 101                         current_mixer_strip->set_width (editor_mixer_strip_width);
 102
 103                         global_hpacker.pack_start (*current_mixer_strip, Gtk::PACK_SHRINK );
 104                         global_hpacker.reorder_child (*current_mixer_strip, 0);
 105
 106                         current_mixer_strip->show_all ();
 107                 }
 108
 109         } else {
 110
 111                 if (current_mixer_strip) {
 112                         editor_mixer_strip_width = current_mixer_strip->get_width ();
 113                         if (current_mixer_strip->get_parent() != 0) {
 114                                 global_hpacker.remove (*current_mixer_strip);
 115                         }
 116                 }
 117         }
 118 }
 119
 120 void
 121 Editor::set_selected_mixer_strip (TimeAxisView& view)
 122 {
 123         AudioTimeAxisView* at;
 124         bool show = false;
 125
 126         if (!session || (at = dynamic_cast<AudioTimeAxisView*>(&view)) == 0) {
 127                 return;
 128         }
 129
 130         if (current_mixer_strip) {
 131
 132                 /* might be nothing to do */
 133
 134                 if (current_mixer_strip->route() == at->route()) {
 135                         return;
 136                 }
 137
 138                 if (current_mixer_strip->get_parent()) {
 139                         show = true;
 140                 }
 141                 delete current_mixer_strip;
 142                 current_mixer_strip = 0;
 143         }
 144
 145         current_mixer_strip = new MixerStrip (*ARDOUR_UI::instance()->the_mixer(),
 146                                               *session,
 147                                               at->route());
 148         current_mixer_strip->GoingAway.connect (mem_fun(*this, &Editor::cms_deleted));
 149
 150         if (show) {
 151                 show_editor_mixer (true);
 152         }
 153 }
 154
 155 void
 156 Editor::update_current_screen ()
 157 {
 158         if (session && engine.running()) {
 159
 160                 jack_nframes_t frame;
 161
 162                 frame = session->audible_frame();
 163
 164                 /* only update if the playhead is on screen or we are following it */
 165
 166                 if (_follow_playhead) {
 167
 168
 169                         playhead_cursor->canvas_item.show();
 170                         if (frame != last_update_frame) {
 171                                 const jack_nframes_t page_width = current_page_frames();
 172
 173                                 // Percentage width of the visible range to use as a scroll interval
 174                                 // Idea: snap this to the nearest bar/beat/tick/etc, would make scrolling much
 175                                 // less jarring when zoomed in.. and it would be fun to watch :)
 176                                 static const double scroll_pct = 3.0/4.0;
 177
 178                                 const jack_nframes_t rightmost_frame = leftmost_frame + page_width;
 179                                 const jack_nframes_t scroll_interval = (jack_nframes_t)(page_width * scroll_pct);
 180                                 const jack_nframes_t padding = (jack_nframes_t)floor((page_width-scroll_interval) / 2.0);
 181
 182                                 if (frame < leftmost_frame + padding || frame > rightmost_frame - padding) {
 183
 184                                         if (session->transport_speed() < 0) {
 185                                                 if (frame > scroll_interval) {
 186                                                         center_screen (frame - scroll_interval/2);
 187                                                 } else {
 188                                                         center_screen (scroll_interval);
 189                                                 }
 190                                         } else {
 191                                                 center_screen(frame + scroll_interval/2);
 192                                         }
 193                                 }
 194
 195                                 playhead_cursor->set_position (frame);
 196                         }
 197
 198                 } else {
 199
 200                         if (frame != last_update_frame) {
 201                                 if (frame < leftmost_frame || frame > leftmost_frame + current_page_frames()) {
 202                                         playhead_cursor->canvas_item.hide();
 203                                 } else {
 204                                         playhead_cursor->set_position (frame);
 205                                 }
 206                         }
 207                 }
 208
 209                 last_update_frame = frame;
 210
 211                 if (current_mixer_strip) {
 212                         current_mixer_strip->fast_update ();
 213                 }
 214
 215         }
 216 }
 217
 218 void
 219 Editor::current_mixer_strip_removed ()
 220 {
 221         if (current_mixer_strip) {
 222                 /* it is being deleted */
 223                 current_mixer_strip = 0;
 224         }
 225 }
 226
 227 void
 228 Editor::current_mixer_strip_hidden ()
 229 {
 230         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
 231
 232                 AudioTimeAxisView* tmp;
 233
 234                 if ((tmp = dynamic_cast<AudioTimeAxisView*>(*i)) != 0) {
 235                         if (tmp->route() == current_mixer_strip->route()) {
 236                                 (*i)->set_selected (false);
 237                                 break;
 238                         }
 239                 }
 240         }
 241
 242         Glib::RefPtr<Gtk::Action> act = ActionManager::get_action (X_("Editor"), X_("show-editor-mixer"));
 243         if (act) {
 244                 Glib::RefPtr<Gtk::ToggleAction> tact = Glib::RefPtr<Gtk::ToggleAction>::cast_dynamic(act);
 245                 tact->set_active (false);
 246         }
 247 }
 248
 249 void
 250 Editor::session_going_away ()
 251 {
 252         for (vector<sigc::connection>::iterator i = session_connections.begin(); i != session_connections.end(); ++i) {
 253                 (*i).disconnect ();
 254         }
 255
 256         stop_scrolling ();
 257         selection->clear ();
 258         cut_buffer->clear ();
 259
 260         clicked_regionview = 0;
 261         clicked_axisview = 0;
 262         clicked_routeview = 0;
 263         clicked_crossfadeview = 0;
 264         entered_regionview = 0;
 265         entered_track = 0;
 266         latest_regionview = 0;
 267         last_update_frame = 0;
 268         drag_info.item = 0;
 269         last_canvas_frame = 0;
 270
 271         /* hide all tracks */
 272
 273         hide_all_tracks (false);
 274
 275         /* rip everything out of the list displays */
 276
 277         region_list_clear (); // no clear() method in gtkmm 1.2
 278         route_display_model->clear ();
 279         named_selection_model->clear ();
 280         group_model->clear ();
 281
 282         edit_cursor_clock.set_session (0);
 283         zoom_range_clock.set_session (0);
 284         nudge_clock.set_session (0);
 285
 286         /* put editor/mixer toggle button in off position and disable until a new session is loaded */
 287
 288         editor_mixer_button.set_active(false);
 289         editor_mixer_button.set_sensitive(false);
 290         /* clear tempo/meter rulers */
 291
 292         remove_metric_marks ();
 293         hide_measures ();
 294         clear_marker_display ();
 295
 296         if (current_bbt_points) {
 297                 delete current_bbt_points;
 298                 current_bbt_points = 0;
 299         }
 300
 301         /* mixer strip will be deleted all by itself
 302            when its route is deleted.
 303         */
 304
 305         current_mixer_strip = 0;
 306
 307         set_title (_("ardour: editor"));
 308
 309         session = 0;
 310 }