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         // DR-way
  74         canvas_rect->property_outline_what() = (guint32) (0x2|0x8);  // outline RHS and bottom
  75         // 2.0 way
  76         //canvas_rect->property_outline_what() = (guint32) (0x1|0x2|0x8);  // outline ends and bottom
  77         // (Fill/Outline colours set in derived classes)
  78
  79         canvas_rect->signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_stream_view_event), canvas_rect, &_trackview));
  80
  81         if (_trackview.is_track()) {
  82                 _trackview.track()->DiskstreamChanged.connect (mem_fun (*this, &StreamView::diskstream_changed));
  83                 _trackview.session().TransportStateChange.connect (mem_fun (*this, &StreamView::transport_changed));
  84                 _trackview.session().TransportLooped.connect (mem_fun (*this, &StreamView::transport_looped));
  85                 _trackview.get_diskstream()->RecordEnableChanged.connect (mem_fun (*this, &StreamView::rec_enable_changed));
  86                 _trackview.session().RecordStateChanged.connect (mem_fun (*this, &StreamView::sess_rec_enable_changed));
  87         }
  88
  89         ColorsChanged.connect (mem_fun (*this, &StreamView::color_handler));
  90 }
  91
  92 StreamView::~StreamView ()
  93 {
  94         undisplay_diskstream ();
  95
  96         delete canvas_rect;
  97
  98         if (owns_canvas_group) {
  99                 delete canvas_group;
 100         }
 101 }
 102
 103 void
 104 StreamView::attach ()
 105 {
 106         if (_trackview.is_track()) {
 107                 display_diskstream (_trackview.get_diskstream());
 108         }
 109 }
 110
 111 int
 112 StreamView::set_position (gdouble x, gdouble y)
 113 {
 114         canvas_group->property_x() = x;
 115         canvas_group->property_y() = y;
 116         return 0;
 117 }
 118
 119 int
 120 StreamView::set_height (double h)
 121 {
 122         /* limit the values to something sane-ish */
 123         if (h < 10.0 || h > 1000.0) {
 124                 return -1;
 125         }
 126
 127         if (canvas_rect->property_y2() == h) {
 128                 return 0;
 129         }
 130
 131         height = h;
 132         update_contents_height ();
 133         return 0;
 134 }
 135
 136 int
 137 StreamView::set_samples_per_unit (gdouble spp)
 138 {
 139         RegionViewList::iterator i;
 140
 141         if (spp < 1.0) {
 142                 return -1;
 143         }
 144
 145         _samples_per_unit = spp;
 146
 147         for (i = region_views.begin(); i != region_views.end(); ++i) {
 148                 (*i)->set_samples_per_unit (spp);
 149         }
 150
 151         for (vector<RecBoxInfo>::iterator xi = rec_rects.begin(); xi != rec_rects.end(); ++xi) {
 152                 RecBoxInfo &recbox = (*xi);
 153
 154                 gdouble xstart = _trackview.editor.frame_to_pixel ( recbox.start );
 155                 gdouble xend = _trackview.editor.frame_to_pixel ( recbox.start + recbox.length );
 156
 157                 recbox.rectangle->property_x1() = xstart;
 158                 recbox.rectangle->property_x2() = xend;
 159         }
 160
 161         update_coverage_frames ();
 162
 163         return 0;
 164 }
 165
 166 void
 167 StreamView::add_region_view (boost::shared_ptr<Region> r)
 168 {
 169         // ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_region_view), r));
 170
 171         add_region_view_internal (r, true);
 172         update_contents_height ();
 173 }
 174
 175 void
 176 StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 177 {
 178         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::remove_region_view), weak_r));
 179
 180         boost::shared_ptr<Region> r (weak_r.lock());
 181
 182         if (!r) {
 183                 return;
 184         }
 185
 186         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 187                 if (((*i)->region()) == r) {
 188                         RegionView* rv = *i;
 189                         region_views.erase (i);
 190                         delete rv;
 191                         break;
 192                 }
 193         }
 194 }
 195
 196 void
 197 StreamView::undisplay_diskstream ()
 198 {
 199         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end() ; ) {
 200                 RegionViewList::iterator next = i;
 201                 ++next;
 202                 delete *i;
 203                 i = next;
 204         }
 205
 206         region_views.clear();
 207 }
 208
 209 void
 210 StreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 211 {
 212         playlist_change_connection.disconnect();
 213         playlist_changed (ds);
 214         playlist_change_connection = ds->PlaylistChanged.connect (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 215 }
 216
 217 void
 218 StreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
 219 {
 220         boost::shared_ptr<Diskstream> sp (ds.lock());
 221         if (!sp) {
 222                 return;
 223         }
 224
 225         playlist_modified (sp);
 226 }
 227
 228 void
 229 StreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
 230 {
 231         /* we do not allow shared_ptr<T> to be bound to slots */
 232         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds));
 233
 234         /* update layers count and the y positions and heights of our regions */
 235         if (ds->playlist()) {
 236                 layers = ds->playlist()->top_layer() + 1;
 237                 update_contents_height ();
 238                 update_coverage_frames ();
 239                 redisplay_diskstream ();
 240         }
 241 }
 242
 243 void
 244 StreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 245 {
 246         /* XXX: binding to a shared_ptr, is this ok? */
 247         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 248
 249         /* disconnect from old playlist */
 250
 251         for (vector<sigc::connection>::iterator i = playlist_connections.begin(); i != playlist_connections.end(); ++i) {
 252                 (*i).disconnect();
 253         }
 254
 255         playlist_connections.clear();
 256         undisplay_diskstream ();
 257
 258         /* update layers count and the y positions and heights of our regions */
 259         layers = ds->playlist()->top_layer() + 1;
 260         update_contents_height ();
 261
 262         update_coverage_frames ();
 263
 264         /* draw it */
 265         redisplay_diskstream ();
 266
 267         /* catch changes */
 268
 269         playlist_connections.push_back (ds->playlist()->Modified.connect (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds)));
 270 }
 271
 272 void
 273 StreamView::diskstream_changed ()
 274 {
 275         boost::shared_ptr<Track> t;
 276
 277         if ((t = _trackview.track()) != 0) {
 278                 Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun (*this, &StreamView::display_diskstream), t->diskstream()));
 279         } else {
 280                 Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::undisplay_diskstream));
 281         }
 282 }
 283
 284 void
 285 StreamView::apply_color (Gdk::Color& color, ColorTarget target)
 286
 287 {
 288         list<RegionView *>::iterator i;
 289
 290         switch (target) {
 291         case RegionColor:
 292                 region_color = color;
 293                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 294                         (*i)->set_color (region_color);
 295                 }
 296                 break;
 297
 298         case StreamBaseColor:
 299                 stream_base_color = RGBA_TO_UINT (
 300                         color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
 301                 canvas_rect->property_fill_color_rgba() = stream_base_color;
 302                 break;
 303         }
 304 }
 305
 306 void
 307 StreamView::region_layered (RegionView* rv)
 308 {
 309         /* don't ever leave it at the bottom, since then it doesn't
 310            get events - the  parent group does instead ...
 311         */
 312         rv->get_canvas_group()->raise (rv->region()->layer());
 313 }
 314
 315 void
 316 StreamView::rec_enable_changed ()
 317 {
 318         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 319 }
 320
 321 void
 322 StreamView::sess_rec_enable_changed ()
 323 {
 324         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 325 }
 326
 327 void
 328 StreamView::transport_changed()
 329 {
 330         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 331 }
 332
 333 void
 334 StreamView::transport_looped()
 335 {
 336         // to force a new rec region
 337         rec_active = false;
 338         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 339 }
 340
 341 void
 342 StreamView::update_rec_box ()
 343 {
 344         if (rec_active && rec_rects.size() > 0) {
 345                 /* only update the last box */
 346                 RecBoxInfo & rect = rec_rects.back();
 347                 nframes_t at = _trackview.get_diskstream()->current_capture_end();
 348                 double xstart;
 349                 double xend;
 350
 351                 switch (_trackview.track()->mode()) {
 352                 case Normal:
 353                         rect.length = at - rect.start;
 354                         xstart = _trackview.editor.frame_to_pixel (rect.start);
 355                         xend = _trackview.editor.frame_to_pixel (at);
 356                         break;
 357
 358                 case Destructive:
 359                         rect.length = 2;
 360                         xstart = _trackview.editor.frame_to_pixel (_trackview.get_diskstream()->current_capture_start());
 361                         xend = _trackview.editor.frame_to_pixel (at);
 362                         break;
 363                 }
 364
 365                 rect.rectangle->property_x1() = xstart;
 366                 rect.rectangle->property_x2() = xend;
 367         }
 368 }
 369
 370 RegionView*
 371 StreamView::find_view (boost::shared_ptr<const Region> region)
 372 {
 373         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 374
 375                 if ((*i)->region() == region) {
 376                         return *i;
 377                 }
 378         }
 379         return 0;
 380 }
 381
 382 void
 383 StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
 384 {
 385         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 386                 slot (*i);
 387         }
 388 }
 389
 390 void
 391 StreamView::set_selected_regionviews (RegionSelection& regions)
 392 {
 393         bool selected;
 394
 395         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 396
 397                 selected = false;
 398
 399                 for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
 400                         if (*i == *ii) {
 401                                 selected = true;
 402                         }
 403                 }
 404
 405                 (*i)->set_selected (selected);
 406         }
 407 }
 408
 409 void
 410 StreamView::get_selectables (nframes_t start, nframes_t end, list<Selectable*>& results)
 411 {
 412         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 413                 if ((*i)->region()->coverage(start, end) != OverlapNone) {
 414                         results.push_back (*i);
 415                 }
 416         }
 417 }
 418
 419 void
 420 StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
 421 {
 422         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 423                 if (!sel.regions.contains (*i)) {
 424                         results.push_back (*i);
 425                 }
 426         }
 427 }
 428
 429 /** @return height of a child region view, depending on stacked / overlaid mode */
 430 double
 431 StreamView::child_height () const
 432 {
 433         if (layer_display == Stacked) {
 434                 return height / layers;
 435         }
 436
 437         return height;
 438 }
 439
 440 void
 441 StreamView::update_contents_height ()
 442 {
 443         canvas_rect->property_y2() = height;
 444
 445         const double h = child_height ();
 446
 447         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 448                 switch (layer_display) {
 449                 case Overlaid:
 450                         (*i)->set_y (0);
 451                         break;
 452                 case Stacked:
 453                         (*i)->set_y (height - ((*i)->region()->layer() + 1) * h);
 454                         break;
 455                 }
 456
 457                 (*i)->set_height (h);
 458         }
 459
 460         for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
 461                 i->rectangle->property_y2() = height - 1.0;
 462         }
 463 }
 464
 465 void
 466 StreamView::set_layer_display (LayerDisplay d)
 467 {
 468         layer_display = d;
 469         update_contents_height ();
 470         update_coverage_frames ();
 471 }
 472
 473 void
 474 StreamView::update_coverage_frames ()
 475 {
 476         for (RegionViewList::iterator i = region_views.begin (); i != region_views.end (); ++i) {
 477                 (*i)->update_coverage_frames (layer_display);
 478         }
 479 }