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