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