gtk2_ardour/streamview.cc

   1 /*
   2     Copyright (C) 2001, 2006 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
  19 #include <cmath>
  20
  21 #include <gtkmm.h>
  22
  23 #include <gtkmm2ext/gtk_ui.h>
  24
  25 #include <ardour/playlist.h>
  26 #include <ardour/region.h>
  27 #include <ardour/source.h>
  28 #include <ardour/diskstream.h>
  29 #include <ardour/track.h>
  30
  31 #include "streamview.h"
  32 #include "region_view.h"
  33 #include "route_time_axis.h"
  34 #include "canvas-waveview.h"
  35 #include "canvas-simplerect.h"
  36 #include "region_selection.h"
  37 #include "selection.h"
  38 #include "public_editor.h"
  39 #include "ardour_ui.h"
  40 #include "rgb_macros.h"
  41 #include "gui_thread.h"
  42 #include "utils.h"
  43
  44 using namespace ARDOUR;
  45 using namespace PBD;
  46 using namespace Editing;
  47
  48 StreamView::StreamView (RouteTimeAxisView& tv, ArdourCanvas::Group* group)
  49         : _trackview (tv)
  50         , owns_canvas_group(group == 0)
  51         , _background_group (new ArdourCanvas::Group (*_trackview.canvas_background()))
  52         , canvas_group(group ? group : new ArdourCanvas::Group(*_trackview.canvas_display()))
  53         , _samples_per_unit (_trackview.editor().get_current_zoom ())
  54         , rec_updating(false)
  55         , rec_active(false)
  56         , use_rec_regions (tv.editor().show_waveforms_recording ())
  57         , region_color(_trackview.color())
  58         , stream_base_color(0xFFFFFFFF)
  59         , _layers (1)
  60         , height(tv.height)
  61         , _layer_display (Overlaid)
  62         , last_rec_data_frame(0)
  63 {
  64         /* set_position() will position the group */
  65
  66         canvas_rect = new ArdourCanvas::SimpleRect (*_background_group);
  67         canvas_rect->property_x1() = 0.0;
  68         canvas_rect->property_y1() = 0.0;
  69         canvas_rect->property_x2() = _trackview.editor().get_physical_screen_width ();
  70         canvas_rect->property_y2() = (double) tv.current_height();
  71         canvas_rect->raise(1); // raise above tempo lines
  72
  73         canvas_rect->property_outline_what() = (guint32) (0x2|0x8);  // outline RHS and bottom
  74
  75         canvas_rect->signal_event().connect (bind (mem_fun (_trackview.editor(), &PublicEditor::canvas_stream_view_event), canvas_rect, &_trackview));
  76
  77         if (_trackview.is_track()) {
  78                 _trackview.track()->DiskstreamChanged.connect (mem_fun (*this, &StreamView::diskstream_changed));
  79                 _trackview.session().TransportStateChange.connect (mem_fun (*this, &StreamView::transport_changed));
  80                 _trackview.session().TransportLooped.connect (mem_fun (*this, &StreamView::transport_looped));
  81                 _trackview.get_diskstream()->RecordEnableChanged.connect (mem_fun (*this, &StreamView::rec_enable_changed));
  82                 _trackview.session().RecordStateChanged.connect (mem_fun (*this, &StreamView::sess_rec_enable_changed));
  83         }
  84
  85         ColorsChanged.connect (mem_fun (*this, &StreamView::color_handler));
  86 }
  87
  88 StreamView::~StreamView ()
  89 {
  90         undisplay_diskstream ();
  91
  92         delete canvas_rect;
  93
  94         if (owns_canvas_group) {
  95                 delete canvas_group;
  96         }
  97 }
  98
  99 void
 100 StreamView::attach ()
 101 {
 102         if (_trackview.is_track()) {
 103                 display_diskstream (_trackview.get_diskstream());
 104         }
 105 }
 106
 107 int
 108 StreamView::set_position (gdouble x, gdouble y)
 109 {
 110         canvas_group->property_x() = x;
 111         canvas_group->property_y() = y;
 112         return 0;
 113 }
 114
 115 int
 116 StreamView::set_height (double h)
 117 {
 118         /* limit the values to something sane-ish */
 119         if (h < 10.0 || h > 1000.0) {
 120                 return -1;
 121         }
 122
 123         if (canvas_rect->property_y2() == h) {
 124                 return 0;
 125         }
 126
 127         height = h;
 128         update_contents_height ();
 129         return 0;
 130 }
 131
 132 int
 133 StreamView::set_samples_per_unit (gdouble spp)
 134 {
 135         RegionViewList::iterator i;
 136
 137         if (spp < 1.0) {
 138                 return -1;
 139         }
 140
 141         _samples_per_unit = spp;
 142
 143         for (i = region_views.begin(); i != region_views.end(); ++i) {
 144                 (*i)->set_samples_per_unit (spp);
 145         }
 146
 147         for (vector<RecBoxInfo>::iterator xi = rec_rects.begin(); xi != rec_rects.end(); ++xi) {
 148                 RecBoxInfo &recbox = (*xi);
 149
 150                 gdouble xstart = _trackview.editor().frame_to_pixel (recbox.start);
 151                 gdouble xend = _trackview.editor().frame_to_pixel (recbox.start + recbox.length);
 152
 153                 recbox.rectangle->property_x1() = xstart;
 154                 recbox.rectangle->property_x2() = xend;
 155         }
 156
 157         update_coverage_frames ();
 158
 159         return 0;
 160 }
 161
 162 void
 163 StreamView::add_region_view (boost::shared_ptr<Region> r)
 164 {
 165         // ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_region_view), r));
 166
 167         add_region_view_internal (r, true);
 168         update_contents_height ();
 169 }
 170
 171 void
 172 StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 173 {
 174         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::remove_region_view), weak_r));
 175
 176         boost::shared_ptr<Region> r (weak_r.lock());
 177
 178         if (!r) {
 179                 return;
 180         }
 181
 182         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 183                 if (((*i)->region()) == r) {
 184                         RegionView* rv = *i;
 185                         region_views.erase (i);
 186                         delete rv;
 187                         break;
 188                 }
 189         }
 190 }
 191
 192 void
 193 StreamView::undisplay_diskstream ()
 194 {
 195         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end() ; ) {
 196                 RegionViewList::iterator next = i;
 197                 ++next;
 198                 delete *i;
 199                 i = next;
 200         }
 201
 202         region_views.clear();
 203 }
 204
 205 void
 206 StreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 207 {
 208         playlist_change_connection.disconnect();
 209         playlist_changed (ds);
 210         playlist_change_connection = ds->PlaylistChanged.connect (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 211 }
 212
 213 void
 214 StreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
 215 {
 216         boost::shared_ptr<Diskstream> sp (ds.lock());
 217         if (!sp) {
 218                 return;
 219         }
 220
 221         playlist_modified (sp);
 222 }
 223
 224 void
 225 StreamView::layer_regions()
 226 {
 227         // In one traversal of the region view list:
 228         // - Build a list of region views sorted by layer
 229         // - Remove invalid views from the actual region view list
 230         RegionViewList copy;
 231         list<RegionView*>::iterator i, tmp;
 232         for (i = region_views.begin(); i != region_views.end(); ) {
 233                 tmp = i;
 234                 tmp++;
 235
 236                 if (!(*i)->is_valid()) {
 237                         delete *i;
 238                         region_views.erase (i);
 239                         i = tmp;
 240                         continue;
 241                 } else {
 242                         (*i)->enable_display(true);
 243                 }
 244
 245                 if (copy.size() == 0) {
 246                         copy.push_front((*i));
 247                         i = tmp;
 248                         continue;
 249                 }
 250
 251                 RegionViewList::iterator k = copy.begin();
 252                 RegionViewList::iterator l = copy.end();
 253                 l--;
 254
 255                 if ((*i)->region()->layer() <= (*k)->region()->layer()) {
 256                         copy.push_front((*i));
 257                         i = tmp;
 258                         continue;
 259                 } else if ((*i)->region()->layer() >= (*l)->region()->layer()) {
 260                         copy.push_back((*i));
 261                         i = tmp;
 262                         continue;
 263                 }
 264
 265                 for (RegionViewList::iterator j = copy.begin(); j != copy.end(); ++j) {
 266                         if ((*j)->region()->layer() >= (*i)->region()->layer()) {
 267                                 copy.insert(j, (*i));
 268                                 break;
 269                         }
 270                 }
 271
 272                 i = tmp;
 273         }
 274
 275         // Fix canvas layering by raising each in the sorted list order
 276         for (RegionViewList::iterator i = copy.begin(); i != copy.end(); ++i) {
 277                 region_layered (*i);
 278         }
 279 }
 280
 281 void
 282 StreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
 283 {
 284         /* we do not allow shared_ptr<T> to be bound to slots */
 285         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds));
 286
 287         /* update layers count and the y positions and heights of our regions */
 288         if (ds->playlist()) {
 289                 _layers = ds->playlist()->top_layer() + 1;
 290                 update_contents_height ();
 291                 update_coverage_frames ();
 292                 redisplay_diskstream ();
 293         }
 294 }
 295
 296 void
 297 StreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 298 {
 299         /* XXX: binding to a shared_ptr, is this ok? */
 300         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 301
 302         /* disconnect from old playlist */
 303
 304         for (vector<sigc::connection>::iterator i = playlist_connections.begin(); i != playlist_connections.end(); ++i) {
 305                 (*i).disconnect();
 306         }
 307
 308         playlist_connections.clear();
 309         undisplay_diskstream ();
 310
 311         /* update layers count and the y positions and heights of our regions */
 312         _layers = ds->playlist()->top_layer() + 1;
 313         update_contents_height ();
 314
 315         update_coverage_frames ();
 316
 317         /* draw it */
 318         redisplay_diskstream ();
 319
 320         /* catch changes */
 321
 322         playlist_connections.push_back (ds->playlist()->Modified.connect (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds)));
 323 }
 324
 325 void
 326 StreamView::diskstream_changed ()
 327 {
 328         boost::shared_ptr<Track> t;
 329
 330         if ((t = _trackview.track()) != 0) {
 331                 Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun (*this, &StreamView::display_diskstream), t->diskstream()));
 332         } else {
 333                 Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::undisplay_diskstream));
 334         }
 335 }
 336
 337 void
 338 StreamView::apply_color (Gdk::Color& color, ColorTarget target)
 339
 340 {
 341         list<RegionView *>::iterator i;
 342
 343         switch (target) {
 344         case RegionColor:
 345                 region_color = color;
 346                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 347                         (*i)->set_color (region_color);
 348                 }
 349                 break;
 350
 351         case StreamBaseColor:
 352                 stream_base_color = RGBA_TO_UINT (
 353                         color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
 354                 canvas_rect->property_fill_color_rgba() = stream_base_color;
 355                 break;
 356         }
 357 }
 358
 359 void
 360 StreamView::region_layered (RegionView* rv)
 361 {
 362         /* don't ever leave it at the bottom, since then it doesn't
 363            get events - the  parent group does instead ...
 364         */
 365         rv->get_canvas_group()->raise (rv->region()->layer());
 366 }
 367
 368 void
 369 StreamView::rec_enable_changed ()
 370 {
 371         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 372 }
 373
 374 void
 375 StreamView::sess_rec_enable_changed ()
 376 {
 377         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 378 }
 379
 380 void
 381 StreamView::transport_changed()
 382 {
 383         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 384 }
 385
 386 void
 387 StreamView::transport_looped()
 388 {
 389         // to force a new rec region
 390         rec_active = false;
 391         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 392 }
 393
 394 void
 395 StreamView::update_rec_box ()
 396 {
 397         if (rec_active && rec_rects.size() > 0) {
 398                 /* only update the last box */
 399                 RecBoxInfo & rect = rec_rects.back();
 400                 nframes_t at = _trackview.get_diskstream()->current_capture_end();
 401                 double xstart;
 402                 double xend;
 403
 404                 switch (_trackview.track()->mode()) {
 405                 case Normal:
 406                         rect.length = at - rect.start;
 407                         xstart = _trackview.editor().frame_to_pixel (rect.start);
 408                         xend = _trackview.editor().frame_to_pixel (at);
 409                         break;
 410
 411                 case Destructive:
 412                         rect.length = 2;
 413                         xstart = _trackview.editor().frame_to_pixel (_trackview.get_diskstream()->current_capture_start());
 414                         xend = _trackview.editor().frame_to_pixel (at);
 415                         break;
 416                 }
 417
 418                 rect.rectangle->property_x1() = xstart;
 419                 rect.rectangle->property_x2() = xend;
 420         }
 421 }
 422
 423 RegionView*
 424 StreamView::find_view (boost::shared_ptr<const Region> region)
 425 {
 426         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 427
 428                 if ((*i)->region() == region) {
 429                         return *i;
 430                 }
 431         }
 432         return 0;
 433 }
 434
 435 void
 436 StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
 437 {
 438         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 439                 slot (*i);
 440         }
 441 }
 442
 443 void
 444 StreamView::set_selected_regionviews (RegionSelection& regions)
 445 {
 446         bool selected;
 447
 448         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 449
 450                 selected = false;
 451
 452                 for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
 453                         if (*i == *ii) {
 454                                 selected = true;
 455                                 break;
 456                         }
 457                 }
 458
 459                 (*i)->set_selected (selected);
 460         }
 461 }
 462
 463 void
 464 StreamView::get_selectables (nframes_t start, nframes_t end, list<Selectable*>& results)
 465 {
 466         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 467                 if ((*i)->region()->coverage(start, end) != OverlapNone) {
 468                         results.push_back (*i);
 469                 }
 470         }
 471 }
 472
 473 void
 474 StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
 475 {
 476         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 477                 if (!sel.regions.contains (*i)) {
 478                         results.push_back (*i);
 479                 }
 480         }
 481 }
 482
 483 /** @return height of a child region view, depending on stacked / overlaid mode */
 484 double
 485 StreamView::child_height () const
 486 {
 487         if (_layer_display == Stacked) {
 488                 return height / _layers;
 489         }
 490
 491         return height;
 492 }
 493
 494 void
 495 StreamView::update_contents_height ()
 496 {
 497         canvas_rect->property_y2() = height;
 498
 499         const double h = child_height ();
 500
 501         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 502                 switch (_layer_display) {
 503                 case Overlaid:
 504                         (*i)->set_y (0);
 505                         break;
 506                 case Stacked:
 507                         (*i)->set_y (height - ((*i)->region()->layer() + 1) * h);
 508                         break;
 509                 }
 510
 511                 (*i)->set_height (h);
 512         }
 513
 514         for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
 515                 i->rectangle->property_y2() = height - 1.0;
 516         }
 517 }
 518
 519 void
 520 StreamView::set_layer_display (LayerDisplay d)
 521 {
 522         _layer_display = d;
 523         update_contents_height ();
 524         update_coverage_frames ();
 525 }
 526
 527 void
 528 StreamView::update_coverage_frames ()
 529 {
 530         for (RegionViewList::iterator i = region_views.begin (); i != region_views.end (); ++i) {
 531                 (*i)->update_coverage_frames (_layer_display);
 532         }
 533 }