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         return 0;
 162 }
 163
 164 void
 165 StreamView::add_region_view (boost::shared_ptr<Region> r)
 166 {
 167         // ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_region_view), r));
 168
 169         add_region_view_internal (r, true);
 170         update_contents_height ();
 171 }
 172
 173 void
 174 StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 175 {
 176         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::remove_region_view), weak_r));
 177
 178         boost::shared_ptr<Region> r (weak_r.lock());
 179
 180         if (!r) {
 181                 return;
 182         }
 183
 184         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 185                 if (((*i)->region()) == r) {
 186                         RegionView* rv = *i;
 187                         region_views.erase (i);
 188                         delete rv;
 189                         break;
 190                 }
 191         }
 192 }
 193
 194 void
 195 StreamView::undisplay_diskstream ()
 196 {
 197         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end() ; ) {
 198                 RegionViewList::iterator next = i;
 199                 ++next;
 200                 delete *i;
 201                 i = next;
 202         }
 203
 204         region_views.clear();
 205 }
 206
 207 void
 208 StreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 209 {
 210         playlist_change_connection.disconnect();
 211         playlist_changed (ds);
 212         playlist_change_connection = ds->PlaylistChanged.connect (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 213 }
 214
 215 void
 216 StreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
 217 {
 218         boost::shared_ptr<Diskstream> sp (ds.lock());
 219         if (!sp) {
 220                 return;
 221         }
 222
 223         playlist_modified (sp);
 224 }
 225
 226 void
 227 StreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
 228 {
 229         /* we do not allow shared_ptr<T> to be bound to slots */
 230         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds));
 231
 232         /* update layers count and the y positions and heights of our regions */
 233         if (ds->playlist()) {
 234                 layers = ds->playlist()->top_layer() + 1;
 235                 update_contents_height ();
 236                 update_coverage_frames ();
 237                 redisplay_diskstream ();
 238         }
 239 }
 240
 241 void
 242 StreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 243 {
 244         /* XXX: binding to a shared_ptr, is this ok? */
 245         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 246
 247         /* disconnect from old playlist */
 248
 249         for (vector<sigc::connection>::iterator i = playlist_connections.begin(); i != playlist_connections.end(); ++i) {
 250                 (*i).disconnect();
 251         }
 252
 253         playlist_connections.clear();
 254         undisplay_diskstream ();
 255
 256         /* update layers count and the y positions and heights of our regions */
 257         layers = ds->playlist()->top_layer() + 1;
 258         update_contents_height ();
 259
 260         update_coverage_frames ();
 261
 262         /* draw it */
 263         redisplay_diskstream ();
 264
 265         /* catch changes */
 266
 267         playlist_connections.push_back (ds->playlist()->Modified.connect (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds)));
 268 }
 269
 270 void
 271 StreamView::diskstream_changed ()
 272 {
 273         boost::shared_ptr<Track> t;
 274
 275         if ((t = _trackview.track()) != 0) {
 276                 Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun (*this, &StreamView::display_diskstream), t->diskstream()));
 277         } else {
 278                 Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::undisplay_diskstream));
 279         }
 280 }
 281
 282 void
 283 StreamView::apply_color (Gdk::Color& color, ColorTarget target)
 284
 285 {
 286         list<RegionView *>::iterator i;
 287
 288         switch (target) {
 289         case RegionColor:
 290                 region_color = color;
 291                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 292                         (*i)->set_color (region_color);
 293                 }
 294                 break;
 295
 296         case StreamBaseColor:
 297                 stream_base_color = RGBA_TO_UINT (
 298                         color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
 299                 canvas_rect->property_fill_color_rgba() = stream_base_color;
 300                 break;
 301         }
 302 }
 303
 304 void
 305 StreamView::region_layered (RegionView* rv)
 306 {
 307         /* don't ever leave it at the bottom, since then it doesn't
 308            get events - the  parent group does instead ...
 309         */
 310         rv->get_canvas_group()->raise (rv->region()->layer());
 311 }
 312
 313 void
 314 StreamView::rec_enable_changed ()
 315 {
 316         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 317 }
 318
 319 void
 320 StreamView::sess_rec_enable_changed ()
 321 {
 322         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 323 }
 324
 325 void
 326 StreamView::transport_changed()
 327 {
 328         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 329 }
 330
 331 void
 332 StreamView::transport_looped()
 333 {
 334         // to force a new rec region
 335         rec_active = false;
 336         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 337 }
 338
 339 void
 340 StreamView::update_rec_box ()
 341 {
 342         if (rec_active && rec_rects.size() > 0) {
 343                 /* only update the last box */
 344                 RecBoxInfo & rect = rec_rects.back();
 345                 nframes_t at = _trackview.get_diskstream()->current_capture_end();
 346                 double xstart;
 347                 double xend;
 348
 349                 switch (_trackview.track()->mode()) {
 350                 case Normal:
 351                         rect.length = at - rect.start;
 352                         xstart = _trackview.editor.frame_to_pixel (rect.start);
 353                         xend = _trackview.editor.frame_to_pixel (at);
 354                         break;
 355
 356                 case Destructive:
 357                         rect.length = 2;
 358                         xstart = _trackview.editor.frame_to_pixel (_trackview.get_diskstream()->current_capture_start());
 359                         xend = _trackview.editor.frame_to_pixel (at);
 360                         break;
 361                 }
 362
 363                 rect.rectangle->property_x1() = xstart;
 364                 rect.rectangle->property_x2() = xend;
 365         }
 366 }
 367
 368 RegionView*
 369 StreamView::find_view (boost::shared_ptr<const Region> region)
 370 {
 371         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 372
 373                 if ((*i)->region() == region) {
 374                         return *i;
 375                 }
 376         }
 377         return 0;
 378 }
 379
 380 void
 381 StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
 382 {
 383         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 384                 slot (*i);
 385         }
 386 }
 387
 388 void
 389 StreamView::set_selected_regionviews (RegionSelection& regions)
 390 {
 391         bool selected;
 392
 393         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 394
 395                 selected = false;
 396
 397                 for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
 398                         if (*i == *ii) {
 399                                 selected = true;
 400                         }
 401                 }
 402
 403                 (*i)->set_selected (selected);
 404         }
 405 }
 406
 407 void
 408 StreamView::get_selectables (nframes_t start, nframes_t end, list<Selectable*>& results)
 409 {
 410         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 411                 if ((*i)->region()->coverage(start, end) != OverlapNone) {
 412                         results.push_back (*i);
 413                 }
 414         }
 415 }
 416
 417 void
 418 StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
 419 {
 420         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 421                 if (!sel.regions.contains (*i)) {
 422                         results.push_back (*i);
 423                 }
 424         }
 425 }
 426
 427 /** @return height of a child region view, depending on stacked / overlaid mode */
 428 double
 429 StreamView::child_height () const
 430 {
 431         if (layer_display == Stacked) {
 432                 return height / layers;
 433         }
 434
 435         return height;
 436 }
 437
 438 void
 439 StreamView::update_contents_height ()
 440 {
 441         canvas_rect->property_y2() = height;
 442
 443         const double h = child_height ();
 444
 445         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 446                 switch (layer_display) {
 447                 case Overlaid:
 448                         (*i)->set_y (0);
 449                         break;
 450                 case Stacked:
 451                         (*i)->set_y (height - ((*i)->region()->layer() + 1) * h);
 452                         break;
 453                 }
 454
 455                 (*i)->set_height (h);
 456         }
 457
 458         for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
 459                 i->rectangle->property_y2() = height - 1.0;
 460         }
 461 }
 462
 463 void
 464 StreamView::set_layer_display (LayerDisplay d)
 465 {
 466         layer_display = d;
 467         update_contents_height ();
 468         update_coverage_frames ();
 469 }
 470
 471 void
 472 StreamView::update_coverage_frames ()
 473 {
 474         for (RegionViewList::iterator i = region_views.begin (); i != region_views.end (); ++i) {
 475                 (*i)->update_coverage_frames (layer_display);
 476         }
 477 }