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 std;
  45 using namespace ARDOUR;
  46 using namespace PBD;
  47 using namespace Editing;
  48
  49 StreamView::StreamView (RouteTimeAxisView& tv, ArdourCanvas::Group* group)
  50         : _trackview (tv)
  51         , owns_canvas_group(group == 0)
  52         , _background_group (new ArdourCanvas::Group (*_trackview.canvas_background()))
  53         , canvas_group(group ? group : new ArdourCanvas::Group(*_trackview.canvas_display()))
  54         , _samples_per_unit (_trackview.editor().get_current_zoom ())
  55         , rec_updating(false)
  56         , rec_active(false)
  57         , use_rec_regions (tv.editor().show_waveforms_recording ())
  58         , region_color(_trackview.color())
  59         , stream_base_color(0xFFFFFFFF)
  60         , _layers (1)
  61         , _layer_display (Overlaid)
  62         , height(tv.height)
  63         , last_rec_data_frame(0)
  64 {
  65         /* set_position() will position the group */
  66
  67         canvas_rect = new ArdourCanvas::SimpleRect (*_background_group);
  68         canvas_rect->property_x1() = 0.0;
  69         canvas_rect->property_y1() = 0.0;
  70         canvas_rect->property_x2() = _trackview.editor().get_physical_screen_width ();
  71         canvas_rect->property_y2() = (double) tv.current_height();
  72         canvas_rect->raise(1); // raise above tempo lines
  73
  74         canvas_rect->property_outline_what() = (guint32) (0x2|0x8);  // outline RHS and bottom
  75
  76         canvas_rect->signal_event().connect (bind (
  77                         mem_fun (_trackview.editor(), &PublicEditor::canvas_stream_view_event),
  78                         canvas_rect, &_trackview));
  79
  80         if (_trackview.is_track()) {
  81                 _trackview.track()->DiskstreamChanged.connect (
  82                                 mem_fun (*this, &StreamView::diskstream_changed));
  83                 _trackview.session().TransportStateChange.connect (
  84                                 mem_fun (*this, &StreamView::transport_changed));
  85                 _trackview.session().TransportLooped.connect (
  86                                 mem_fun (*this, &StreamView::transport_looped));
  87                 _trackview.get_diskstream()->RecordEnableChanged.connect (
  88                                 mem_fun (*this, &StreamView::rec_enable_changed));
  89                 _trackview.session().RecordStateChanged.connect (
  90                                 mem_fun (*this, &StreamView::sess_rec_enable_changed));
  91         }
  92
  93         ColorsChanged.connect (mem_fun (*this, &StreamView::color_handler));
  94 }
  95
  96 StreamView::~StreamView ()
  97 {
  98         undisplay_diskstream ();
  99
 100         delete canvas_rect;
 101
 102         if (owns_canvas_group) {
 103                 delete canvas_group;
 104         }
 105 }
 106
 107 void
 108 StreamView::attach ()
 109 {
 110         if (_trackview.is_track()) {
 111                 display_diskstream (_trackview.get_diskstream());
 112         }
 113 }
 114
 115 int
 116 StreamView::set_position (gdouble x, gdouble y)
 117 {
 118         canvas_group->property_x() = x;
 119         canvas_group->property_y() = y;
 120         return 0;
 121 }
 122
 123 int
 124 StreamView::set_height (double h)
 125 {
 126         /* limit the values to something sane-ish */
 127         if (h < 10.0 || h > 1000.0) {
 128                 return -1;
 129         }
 130
 131         if (canvas_rect->property_y2() == h) {
 132                 return 0;
 133         }
 134
 135         height = h;
 136         canvas_rect->property_y2() = height;
 137         update_contents_height ();
 138
 139         HeightChanged ();
 140
 141         return 0;
 142 }
 143
 144 int
 145 StreamView::set_samples_per_unit (gdouble spp)
 146 {
 147         RegionViewList::iterator i;
 148
 149         if (spp < 1.0) {
 150                 return -1;
 151         }
 152
 153         _samples_per_unit = spp;
 154
 155         for (i = region_views.begin(); i != region_views.end(); ++i) {
 156                 (*i)->set_samples_per_unit (spp);
 157         }
 158
 159         for (vector<RecBoxInfo>::iterator xi = rec_rects.begin(); xi != rec_rects.end(); ++xi) {
 160                 RecBoxInfo &recbox = (*xi);
 161
 162                 gdouble xstart = _trackview.editor().frame_to_pixel (recbox.start);
 163                 gdouble xend = _trackview.editor().frame_to_pixel (recbox.start + recbox.length);
 164
 165                 recbox.rectangle->property_x1() = xstart;
 166                 recbox.rectangle->property_x2() = xend;
 167         }
 168
 169         update_coverage_frames ();
 170
 171         return 0;
 172 }
 173
 174 void
 175 StreamView::add_region_view_weak (boost::weak_ptr<Region> r)
 176 {
 177         boost::shared_ptr<Region> sp (r.lock());
 178
 179         if (sp) {
 180                 add_region_view (sp);
 181         }
 182 }
 183
 184
 185 void
 186 StreamView::add_region_view (boost::shared_ptr<Region> r)
 187 {
 188         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::add_region_view), r));
 189
 190         add_region_view_internal (r, true);
 191
 192         if (_layer_display == Stacked) {
 193                 update_contents_height ();
 194         }
 195 }
 196
 197 void
 198 StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 199 {
 200         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::remove_region_view), weak_r));
 201
 202         boost::shared_ptr<Region> r (weak_r.lock());
 203
 204         if (!r) {
 205                 return;
 206         }
 207
 208         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 209                 if (((*i)->region()) == r) {
 210                         RegionView* rv = *i;
 211                         region_views.erase (i);
 212                         delete rv;
 213                         break;
 214                 }
 215         }
 216 }
 217
 218 void
 219 StreamView::undisplay_diskstream ()
 220 {
 221         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end() ; ) {
 222                 RegionViewList::iterator next = i;
 223                 ++next;
 224                 delete *i;
 225                 i = next;
 226         }
 227
 228         region_views.clear();
 229 }
 230
 231 void
 232 StreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 233 {
 234         playlist_change_connection.disconnect();
 235         playlist_changed (ds);
 236         playlist_change_connection = ds->PlaylistChanged.connect (bind (
 237                         mem_fun (*this, &StreamView::playlist_changed_weak),
 238                         boost::weak_ptr<Diskstream> (ds)));
 239 }
 240
 241 void
 242 StreamView::layer_regions()
 243 {
 244         // In one traversal of the region view list:
 245         // - Build a list of region views sorted by layer
 246         // - Remove invalid views from the actual region view list
 247         RegionViewList copy;
 248         list<RegionView*>::iterator i, tmp;
 249         for (i = region_views.begin(); i != region_views.end(); ) {
 250                 tmp = i;
 251                 tmp++;
 252
 253                 if (!(*i)->is_valid()) {
 254                         delete *i;
 255                         region_views.erase (i);
 256                         i = tmp;
 257                         continue;
 258                 } else {
 259                         (*i)->enable_display(true);
 260                 }
 261
 262                 if (copy.size() == 0) {
 263                         copy.push_front((*i));
 264                         i = tmp;
 265                         continue;
 266                 }
 267
 268                 RegionViewList::iterator k = copy.begin();
 269                 RegionViewList::iterator l = copy.end();
 270                 l--;
 271
 272                 if ((*i)->region()->layer() <= (*k)->region()->layer()) {
 273                         copy.push_front((*i));
 274                         i = tmp;
 275                         continue;
 276                 } else if ((*i)->region()->layer() >= (*l)->region()->layer()) {
 277                         copy.push_back((*i));
 278                         i = tmp;
 279                         continue;
 280                 }
 281
 282                 for (RegionViewList::iterator j = copy.begin(); j != copy.end(); ++j) {
 283                         if ((*j)->region()->layer() >= (*i)->region()->layer()) {
 284                                 copy.insert(j, (*i));
 285                                 break;
 286                         }
 287                 }
 288
 289                 i = tmp;
 290         }
 291
 292         // Fix canvas layering by raising each in the sorted list order
 293         for (RegionViewList::iterator i = copy.begin(); i != copy.end(); ++i) {
 294                 region_layered (*i);
 295         }
 296 }
 297
 298 void
 299 StreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
 300 {
 301         boost::shared_ptr<Diskstream> sp (ds.lock());
 302
 303         if (sp) {
 304                 playlist_modified (sp);
 305         }
 306 }
 307
 308 void
 309 StreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
 310 {
 311         /* we do not allow shared_ptr<T> to be bound to slots */
 312         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds));
 313
 314         /* update layers count and the y positions and heights of our regions */
 315         if (ds->playlist()) {
 316                 _layers = ds->playlist()->top_layer() + 1;
 317         }
 318
 319         if (_layer_display == Stacked) {
 320                 update_contents_height ();
 321                 update_coverage_frames ();
 322         }
 323 }
 324
 325 void
 326 StreamView::playlist_changed_weak (boost::weak_ptr<Diskstream> ds)
 327 {
 328         boost::shared_ptr<Diskstream> sp (ds.lock());
 329         if (sp) {
 330                 playlist_changed (sp);
 331         }
 332 }
 333
 334 void
 335 StreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 336 {
 337         ENSURE_GUI_THREAD (bind (
 338                         mem_fun (*this, &StreamView::playlist_changed_weak),
 339                         boost::weak_ptr<Diskstream> (ds)));
 340
 341         /* disconnect from old playlist */
 342
 343         for (vector<sigc::connection>::iterator i = playlist_connections.begin();
 344                         i != playlist_connections.end(); ++i) {
 345                 (*i).disconnect();
 346         }
 347
 348         playlist_connections.clear();
 349         undisplay_diskstream ();
 350
 351         /* update layers count and the y positions and heights of our regions */
 352         _layers = ds->playlist()->top_layer() + 1;
 353         update_contents_height ();
 354
 355         update_coverage_frames ();
 356
 357         /* draw it */
 358         redisplay_diskstream ();
 359
 360         /* catch changes */
 361
 362         playlist_connections.push_back (ds->playlist()->Modified.connect (bind (
 363                         mem_fun (*this, &StreamView::playlist_modified_weak), ds)));
 364
 365         playlist_connections.push_back (ds->playlist()->RegionAdded.connect (
 366                         mem_fun (*this, &StreamView::add_region_view_weak)));
 367
 368         playlist_connections.push_back (ds->playlist()->RegionRemoved.connect (
 369                         mem_fun (*this, &StreamView::remove_region_view)));
 370 }
 371
 372 void
 373 StreamView::diskstream_changed ()
 374 {
 375         boost::shared_ptr<Track> t;
 376
 377         if ((t = _trackview.track()) != 0) {
 378                 Gtkmm2ext::UI::instance()->call_slot (bind (
 379                                 mem_fun (*this, &StreamView::display_diskstream),
 380                                 t->diskstream()));
 381         } else {
 382                 Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::undisplay_diskstream));
 383         }
 384 }
 385
 386 void
 387 StreamView::apply_color (Gdk::Color& color, ColorTarget target)
 388
 389 {
 390         list<RegionView *>::iterator i;
 391
 392         switch (target) {
 393         case RegionColor:
 394                 region_color = color;
 395                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 396                         (*i)->set_color (region_color);
 397                 }
 398                 break;
 399
 400         case StreamBaseColor:
 401                 stream_base_color = RGBA_TO_UINT (
 402                         color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
 403                 canvas_rect->property_fill_color_rgba() = stream_base_color;
 404                 break;
 405         }
 406 }
 407
 408 void
 409 StreamView::region_layered (RegionView* rv)
 410 {
 411         /* don't ever leave it at the bottom, since then it doesn't
 412            get events - the  parent group does instead ...
 413         */
 414         rv->get_canvas_group()->raise (rv->region()->layer());
 415 }
 416
 417 void
 418 StreamView::rec_enable_changed ()
 419 {
 420         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 421 }
 422
 423 void
 424 StreamView::sess_rec_enable_changed ()
 425 {
 426         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 427 }
 428
 429 void
 430 StreamView::transport_changed()
 431 {
 432         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 433 }
 434
 435 void
 436 StreamView::transport_looped()
 437 {
 438         // to force a new rec region
 439         rec_active = false;
 440         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 441 }
 442
 443 void
 444 StreamView::update_rec_box ()
 445 {
 446         if (rec_active && rec_rects.size() > 0) {
 447                 /* only update the last box */
 448                 RecBoxInfo & rect = rec_rects.back();
 449                 nframes_t at = _trackview.get_diskstream()->current_capture_end();
 450                 double xstart;
 451                 double xend;
 452
 453                 switch (_trackview.track()->mode()) {
 454
 455                 case NonLayered:
 456                 case Normal:
 457                         rect.length = at - rect.start;
 458                         xstart = _trackview.editor().frame_to_pixel (rect.start);
 459                         xend = _trackview.editor().frame_to_pixel (at);
 460                         break;
 461
 462                 case Destructive:
 463                         rect.length = 2;
 464                         xstart = _trackview.editor().frame_to_pixel (_trackview.get_diskstream()->current_capture_start());
 465                         xend = _trackview.editor().frame_to_pixel (at);
 466                         break;
 467                 }
 468
 469                 rect.rectangle->property_x1() = xstart;
 470                 rect.rectangle->property_x2() = xend;
 471         }
 472 }
 473
 474 RegionView*
 475 StreamView::find_view (boost::shared_ptr<const Region> region)
 476 {
 477         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 478
 479                 if ((*i)->region() == region) {
 480                         return *i;
 481                 }
 482         }
 483         return 0;
 484 }
 485
 486 void
 487 StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
 488 {
 489         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 490                 slot (*i);
 491         }
 492 }
 493
 494 void
 495 StreamView::set_selected_regionviews (RegionSelection& regions)
 496 {
 497         bool selected;
 498
 499         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 500
 501                 selected = false;
 502
 503                 for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
 504                         if (*i == *ii) {
 505                                 selected = true;
 506                                 break;
 507                         }
 508                 }
 509
 510                 (*i)->set_selected (selected);
 511         }
 512 }
 513
 514 void
 515 StreamView::get_selectables (nframes_t start, nframes_t end, list<Selectable*>& results)
 516 {
 517         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 518                 if ((*i)->region()->coverage(start, end) != OverlapNone) {
 519                         results.push_back (*i);
 520                 }
 521         }
 522 }
 523
 524 void
 525 StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
 526 {
 527         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 528                 if (!sel.regions.contains (*i)) {
 529                         results.push_back (*i);
 530                 }
 531         }
 532 }
 533
 534 /** @return height of a child region view, depending on stacked / overlaid mode */
 535 double
 536 StreamView::child_height () const
 537 {
 538         if (_layer_display == Stacked) {
 539                 return height / _layers;
 540         }
 541
 542         return height;
 543 }
 544
 545 void
 546 StreamView::update_contents_height ()
 547 {
 548         const double h = child_height ();
 549
 550         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 551                 switch (_layer_display) {
 552                 case Overlaid:
 553                         (*i)->set_y (0);
 554                         break;
 555                 case Stacked:
 556                         (*i)->set_y (height - ((*i)->region()->layer() + 1) * h);
 557                         break;
 558                 }
 559
 560                 (*i)->set_height (h);
 561         }
 562
 563         for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
 564                 i->rectangle->property_y2() = height - 1.0;
 565         }
 566 }
 567
 568 void
 569 StreamView::set_layer_display (LayerDisplay d)
 570 {
 571         _layer_display = d;
 572         update_contents_height ();
 573         update_coverage_frames ();
 574 }
 575
 576 void
 577 StreamView::update_coverage_frames ()
 578 {
 579         for (RegionViewList::iterator i = region_views.begin (); i != region_views.end (); ++i) {
 580                 (*i)->update_coverage_frames (_layer_display);
 581         }
 582 }