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