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/track.h"
  29 #include "ardour/session.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* background_group, ArdourCanvas::Group* canvas_group)
  50         : _trackview (tv)
  51         , owns_background_group (background_group == 0)
  52         , owns_canvas_group (canvas_group == 0)
  53         , _background_group (background_group ? background_group : new ArdourCanvas::Group (*_trackview.canvas_background()))
  54         , _canvas_group (canvas_group ? canvas_group : new ArdourCanvas::Group(*_trackview.canvas_display()))
  55         , _samples_per_unit (_trackview.editor().get_current_zoom ())
  56         , rec_updating(false)
  57         , rec_active(false)
  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 (sigc::bind (
  77                         sigc::mem_fun (_trackview.editor(), &PublicEditor::canvas_stream_view_event),
  78                         canvas_rect, &_trackview));
  79
  80         if (_trackview.is_track()) {
  81                 _trackview.track()->DiskstreamChanged.connect (*this, invalidator (*this), boost::bind (&StreamView::diskstream_changed, this), gui_context());
  82                 _trackview.track()->RecordEnableChanged.connect (*this, invalidator (*this), boost::bind (&StreamView::rec_enable_changed, this), gui_context());
  83
  84                 _trackview.session()->TransportStateChange.connect (*this, invalidator (*this), boost::bind (&StreamView::transport_changed, this), gui_context());
  85                 _trackview.session()->TransportLooped.connect (*this, invalidator (*this), boost::bind (&StreamView::transport_looped, this), gui_context());
  86                 _trackview.session()->RecordStateChanged.connect (*this, invalidator (*this), boost::bind (&StreamView::sess_rec_enable_changed, this), gui_context());
  87         }
  88
  89         ColorsChanged.connect (sigc::mem_fun (*this, &StreamView::color_handler));
  90 }
  91
  92 StreamView::~StreamView ()
  93 {
  94         undisplay_track ();
  95
  96         delete canvas_rect;
  97
  98         if (owns_background_group) {
  99                 delete _background_group;
 100         }
 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_track (_trackview.track ());
 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         return 0;
 140 }
 141
 142 int
 143 StreamView::set_samples_per_unit (gdouble spp)
 144 {
 145         RegionViewList::iterator i;
 146
 147         if (spp < 1.0) {
 148                 return -1;
 149         }
 150
 151         _samples_per_unit = spp;
 152
 153         for (i = region_views.begin(); i != region_views.end(); ++i) {
 154                 (*i)->set_samples_per_unit (spp);
 155         }
 156
 157         for (vector<RecBoxInfo>::iterator xi = rec_rects.begin(); xi != rec_rects.end(); ++xi) {
 158                 RecBoxInfo &recbox = (*xi);
 159
 160                 gdouble xstart = _trackview.editor().frame_to_pixel (recbox.start);
 161                 gdouble xend = _trackview.editor().frame_to_pixel (recbox.start + recbox.length);
 162
 163                 recbox.rectangle->property_x1() = xstart;
 164                 recbox.rectangle->property_x2() = xend;
 165         }
 166
 167         update_coverage_frames ();
 168
 169         return 0;
 170 }
 171
 172 void
 173 StreamView::add_region_view (boost::weak_ptr<Region> wr)
 174 {
 175         boost::shared_ptr<Region> r (wr.lock());
 176         if (!r) {
 177                 return;
 178         }
 179
 180         add_region_view_internal (r, true);
 181
 182         if (_layer_display == Stacked) {
 183                 update_contents_height ();
 184         }
 185 }
 186
 187 void
 188 StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 189 {
 190         ENSURE_GUI_THREAD (*this, &StreamView::remove_region_view, weak_r)
 191
 192         boost::shared_ptr<Region> r (weak_r.lock());
 193
 194         if (!r) {
 195                 return;
 196         }
 197
 198         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 199                 if (((*i)->region()) == r) {
 200                         RegionView* rv = *i;
 201                         region_views.erase (i);
 202                         delete rv;
 203                         break;
 204                 }
 205         }
 206 }
 207
 208 void
 209 StreamView::undisplay_track ()
 210 {
 211         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end() ; ) {
 212                 RegionViewList::iterator next = i;
 213                 ++next;
 214                 delete *i;
 215                 i = next;
 216         }
 217
 218         region_views.clear();
 219 }
 220
 221 void
 222 StreamView::display_track (boost::shared_ptr<Track> tr)
 223 {
 224         playlist_switched_connection.disconnect();
 225         playlist_switched (tr);
 226         tr->PlaylistChanged.connect (playlist_switched_connection, invalidator (*this), boost::bind (&StreamView::playlist_switched, this, boost::weak_ptr<Track> (tr)), gui_context());
 227 }
 228
 229 void
 230 StreamView::layer_regions()
 231 {
 232         // In one traversal of the region view list:
 233         // - Build a list of region views sorted by layer
 234         // - Remove invalid views from the actual region view list
 235         RegionViewList copy;
 236         list<RegionView*>::iterator i, tmp;
 237         for (i = region_views.begin(); i != region_views.end(); ) {
 238                 tmp = i;
 239                 tmp++;
 240
 241                 if (!(*i)->is_valid()) {
 242                         delete *i;
 243                         region_views.erase (i);
 244                         i = tmp;
 245                         continue;
 246                 } else {
 247                         (*i)->enable_display(true);
 248                 }
 249
 250                 if (copy.size() == 0) {
 251                         copy.push_front((*i));
 252                         i = tmp;
 253                         continue;
 254                 }
 255
 256                 RegionViewList::iterator k = copy.begin();
 257                 RegionViewList::iterator l = copy.end();
 258                 l--;
 259
 260                 if ((*i)->region()->layer() <= (*k)->region()->layer()) {
 261                         copy.push_front((*i));
 262                         i = tmp;
 263                         continue;
 264                 } else if ((*i)->region()->layer() >= (*l)->region()->layer()) {
 265                         copy.push_back((*i));
 266                         i = tmp;
 267                         continue;
 268                 }
 269
 270                 for (RegionViewList::iterator j = copy.begin(); j != copy.end(); ++j) {
 271                         if ((*j)->region()->layer() >= (*i)->region()->layer()) {
 272                                 copy.insert(j, (*i));
 273                                 break;
 274                         }
 275                 }
 276
 277                 i = tmp;
 278         }
 279
 280         // Fix canvas layering by raising each to the top in the sorted order.
 281         for (RegionViewList::iterator i = copy.begin(); i != copy.end(); ++i) {
 282                 (*i)->get_canvas_group()->raise_to_top ();
 283         }
 284 }
 285
 286 void
 287 StreamView::playlist_layered (boost::weak_ptr<Track> wtr)
 288 {
 289         boost::shared_ptr<Track> tr (wtr.lock());
 290
 291         if (!tr) {
 292                 return;
 293         }
 294
 295         /* update layers count and the y positions and heights of our regions */
 296         if (tr->playlist()) {
 297                 _layers = tr->playlist()->top_layer() + 1;
 298         }
 299
 300         if (_layer_display == Stacked) {
 301                 update_contents_height ();
 302                 update_coverage_frames ();
 303         } else {
 304                 /* layering has probably been modified. reflect this in the canvas. */
 305                 layer_regions();
 306         }
 307 }
 308
 309 void
 310 StreamView::playlist_switched (boost::weak_ptr<Track> wtr)
 311 {
 312         boost::shared_ptr<Track> tr (wtr.lock());
 313
 314         if (!tr) {
 315                 return;
 316         }
 317
 318         /* disconnect from old playlist */
 319
 320         playlist_connections.drop_connections ();
 321         undisplay_track ();
 322
 323         /* update layers count and the y positions and heights of our regions */
 324         _layers = tr->playlist()->top_layer() + 1;
 325         update_contents_height ();
 326         update_coverage_frames ();
 327
 328         tr->playlist()->set_explicit_relayering (_layer_display == Stacked);
 329
 330         /* draw it */
 331
 332         redisplay_track ();
 333
 334         /* catch changes */
 335
 336         tr->playlist()->LayeringChanged.connect (playlist_connections, invalidator (*this), boost::bind (&StreamView::playlist_layered, this, boost::weak_ptr<Track> (tr)), gui_context());
 337         tr->playlist()->RegionAdded.connect (playlist_connections, invalidator (*this), ui_bind (&StreamView::add_region_view, this, _1), gui_context());
 338         tr->playlist()->RegionRemoved.connect (playlist_connections, invalidator (*this), ui_bind (&StreamView::remove_region_view, this, _1), gui_context());
 339         // ds->playlist()->ContentsChanged.connect (playlist_connections, invalidator (*this), boost::bind (&StreamView::redisplay_diskstream, this), gui_context());
 340 }
 341
 342 void
 343 StreamView::diskstream_changed ()
 344 {
 345         boost::shared_ptr<Track> t;
 346
 347         if ((t = _trackview.track()) != 0) {
 348                 Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&StreamView::display_track, this, t));
 349         } else {
 350                 Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&StreamView::undisplay_track, this));
 351         }
 352 }
 353
 354 void
 355 StreamView::apply_color (Gdk::Color& color, ColorTarget target)
 356 {
 357         list<RegionView *>::iterator i;
 358
 359         switch (target) {
 360         case RegionColor:
 361                 region_color = color;
 362                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 363                         (*i)->set_color (region_color);
 364                 }
 365                 break;
 366
 367         case StreamBaseColor:
 368                 stream_base_color = RGBA_TO_UINT (
 369                         color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
 370                 canvas_rect->property_fill_color_rgba() = stream_base_color;
 371                 break;
 372         }
 373 }
 374
 375 void
 376 StreamView::region_layered (RegionView* rv)
 377 {
 378         /* don't ever leave it at the bottom, since then it doesn't
 379            get events - the  parent group does instead ...
 380         */
 381         rv->get_canvas_group()->raise (rv->region()->layer());
 382 }
 383
 384 void
 385 StreamView::rec_enable_changed ()
 386 {
 387         setup_rec_box ();
 388 }
 389
 390 void
 391 StreamView::sess_rec_enable_changed ()
 392 {
 393         setup_rec_box ();
 394 }
 395
 396 void
 397 StreamView::transport_changed()
 398 {
 399         setup_rec_box ();
 400 }
 401
 402 void
 403 StreamView::transport_looped()
 404 {
 405         // to force a new rec region
 406         rec_active = false;
 407         Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&StreamView::setup_rec_box, this));
 408 }
 409
 410 void
 411 StreamView::update_rec_box ()
 412 {
 413         if (rec_active && rec_rects.size() > 0) {
 414                 /* only update the last box */
 415                 RecBoxInfo & rect = rec_rects.back();
 416                 nframes_t at = _trackview.track()->current_capture_end();
 417                 double xstart;
 418                 double xend;
 419
 420                 switch (_trackview.track()->mode()) {
 421
 422                 case NonLayered:
 423                 case Normal:
 424                         rect.length = at - rect.start;
 425                         xstart = _trackview.editor().frame_to_pixel (rect.start);
 426                         xend = _trackview.editor().frame_to_pixel (at);
 427                         break;
 428
 429                 case Destructive:
 430                         rect.length = 2;
 431                         xstart = _trackview.editor().frame_to_pixel (_trackview.track()->current_capture_start());
 432                         xend = _trackview.editor().frame_to_pixel (at);
 433                         break;
 434                 }
 435
 436                 rect.rectangle->property_x1() = xstart;
 437                 rect.rectangle->property_x2() = xend;
 438         }
 439 }
 440
 441 RegionView*
 442 StreamView::find_view (boost::shared_ptr<const Region> region)
 443 {
 444         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 445
 446                 if ((*i)->region() == region) {
 447                         return *i;
 448                 }
 449         }
 450         return 0;
 451 }
 452
 453 uint32_t
 454 StreamView::num_selected_regionviews () const
 455 {
 456         uint32_t cnt = 0;
 457
 458         for (list<RegionView*>::const_iterator i = region_views.begin(); i != region_views.end(); ++i) {
 459                 if ((*i)->get_selected()) {
 460                         ++cnt;
 461                 }
 462         }
 463         return cnt;
 464 }
 465
 466 void
 467 StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
 468 {
 469         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 470                 slot (*i);
 471         }
 472 }
 473
 474 void
 475 StreamView::foreach_selected_regionview (sigc::slot<void,RegionView*> slot)
 476 {
 477         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 478                 if ((*i)->get_selected()) {
 479                         slot (*i);
 480                 }
 481         }
 482 }
 483
 484 void
 485 StreamView::set_selected_regionviews (RegionSelection& regions)
 486 {
 487         bool selected;
 488
 489         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 490
 491                 selected = false;
 492
 493                 for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
 494                         if (*i == *ii) {
 495                                 selected = true;
 496                                 break;
 497                         }
 498                 }
 499
 500                 (*i)->set_selected (selected);
 501         }
 502 }
 503
 504 void
 505 StreamView::get_selectables (nframes_t start, nframes_t end, double top, double bottom, list<Selectable*>& results)
 506 {
 507         layer_t min_layer = 0;
 508         layer_t max_layer = 0;
 509
 510         if (_layer_display == Stacked) {
 511                 double const c = child_height ();
 512                 min_layer = _layers - ((bottom - _trackview.y_position()) / c);
 513                 max_layer = _layers - ((top - _trackview.y_position()) / c);
 514         }
 515
 516         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 517
 518                 bool layer_ok = true;
 519
 520                 if (_layer_display == Stacked) {
 521                         layer_t const l = (*i)->region()->layer ();
 522                         layer_ok = (min_layer <= l && l <= max_layer);
 523                 }
 524
 525                 if ((*i)->region()->coverage (start, end) != OverlapNone && layer_ok) {
 526                         results.push_back (*i);
 527                 }
 528         }
 529 }
 530
 531 void
 532 StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
 533 {
 534         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 535                 if (!sel.regions.contains (*i)) {
 536                         results.push_back (*i);
 537                 }
 538         }
 539 }
 540
 541 /** @return height of a child region view, depending on stacked / overlaid mode */
 542 double
 543 StreamView::child_height () const
 544 {
 545         if (_layer_display == Stacked) {
 546                 return height / _layers;
 547         }
 548
 549         return height;
 550 }
 551
 552 void
 553 StreamView::update_contents_height ()
 554 {
 555         const double h = child_height ();
 556
 557         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 558                 switch (_layer_display) {
 559                 case Overlaid:
 560                         (*i)->set_y (0);
 561                         break;
 562                 case Stacked:
 563                         (*i)->set_y (height - ((*i)->region()->layer() + 1) * h);
 564                         break;
 565                 }
 566
 567                 (*i)->set_height (h);
 568         }
 569
 570         for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
 571                 i->rectangle->property_y2() = height;
 572         }
 573 }
 574
 575 void
 576 StreamView::set_layer_display (LayerDisplay d)
 577 {
 578         _layer_display = d;
 579         update_contents_height ();
 580         update_coverage_frames ();
 581         _trackview.track()->playlist()->set_explicit_relayering (_layer_display == Stacked);
 582 }
 583
 584 void
 585 StreamView::update_coverage_frames ()
 586 {
 587         for (RegionViewList::iterator i = region_views.begin (); i != region_views.end (); ++i) {
 588                 (*i)->update_coverage_frames (_layer_display);
 589         }
 590 }