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