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)
  49         : _trackview (tv)
  50         , canvas_group(new ArdourCanvas::Group(*_trackview.canvas_display))
  51         , canvas_rect(new ArdourCanvas::SimpleRect (*canvas_group))
  52         , _samples_per_unit(_trackview.editor.get_current_zoom())
  53         , rec_updating(false)
  54         , rec_active(false)
  55         , use_rec_regions(tv.editor.show_waveforms_recording())
  56         , region_color(_trackview.color())
  57         , stream_base_color(0xFFFFFFFF)
  58         , layers(1)
  59         , height(tv.height)
  60         , layer_display(Overlaid)
  61         , last_rec_data_frame(0)
  62 {
  63         /* set_position() will position the group */
  64
  65         canvas_rect = new ArdourCanvas::SimpleRect (*canvas_group);
  66         canvas_rect->property_x1() = 0.0;
  67         canvas_rect->property_y1() = 0.0;
  68         canvas_rect->property_x2() = _trackview.editor.frame_to_pixel (max_frames);
  69         canvas_rect->property_y2() = (double) tv.height;
  70         canvas_rect->property_outline_what() = (guint32) (0x2|0x8);  // outline RHS and bottom
  71         // (Fill/Outline colours set in derived classes)
  72
  73         canvas_rect->signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_stream_view_event), canvas_rect, &_trackview));
  74
  75         if (_trackview.is_track()) {
  76                 _trackview.track()->DiskstreamChanged.connect (mem_fun (*this, &StreamView::diskstream_changed));
  77                 _trackview.session().TransportStateChange.connect (mem_fun (*this, &StreamView::transport_changed));
  78                 _trackview.session().TransportLooped.connect (mem_fun (*this, &StreamView::transport_looped));
  79                 _trackview.get_diskstream()->RecordEnableChanged.connect (mem_fun (*this, &StreamView::rec_enable_changed));
  80                 _trackview.session().RecordStateChanged.connect (mem_fun (*this, &StreamView::sess_rec_enable_changed));
  81         }
  82
  83         ColorsChanged.connect (mem_fun (*this, &StreamView::color_handler));
  84 }
  85
  86 StreamView::~StreamView ()
  87 {
  88         undisplay_diskstream ();
  89         delete canvas_group;
  90 }
  91
  92 void
  93 StreamView::attach ()
  94 {
  95         if (_trackview.is_track()) {
  96                 display_diskstream (_trackview.get_diskstream());
  97         }
  98 }
  99
 100 int
 101 StreamView::set_position (gdouble x, gdouble y)
 102 {
 103         canvas_group->property_x() = x;
 104         canvas_group->property_y() = y;
 105         return 0;
 106 }
 107
 108 int
 109 StreamView::set_height (double h)
 110 {
 111         /* limit the values to something sane-ish */
 112         if (h < 10.0 || h > 1000.0) {
 113                 return -1;
 114         }
 115
 116         if (canvas_rect->property_y2() == h) {
 117                 return 0;
 118         }
 119
 120         height = h;
 121         update_contents_y_position_and_height ();
 122         return 0;
 123 }
 124
 125 int
 126 StreamView::set_samples_per_unit (gdouble spp)
 127 {
 128         RegionViewList::iterator i;
 129
 130         if (spp < 1.0) {
 131                 return -1;
 132         }
 133
 134         _samples_per_unit = spp;
 135
 136         for (i = region_views.begin(); i != region_views.end(); ++i) {
 137                 (*i)->set_samples_per_unit (spp);
 138         }
 139
 140         for (vector<RecBoxInfo>::iterator xi = rec_rects.begin(); xi != rec_rects.end(); ++xi) {
 141                 RecBoxInfo &recbox = (*xi);
 142
 143                 gdouble xstart = _trackview.editor.frame_to_pixel ( recbox.start );
 144                 gdouble xend = _trackview.editor.frame_to_pixel ( recbox.start + recbox.length );
 145
 146                 recbox.rectangle->property_x1() = xstart;
 147                 recbox.rectangle->property_x2() = xend;
 148         }
 149
 150         return 0;
 151 }
 152
 153 void
 154 StreamView::add_region_view (boost::shared_ptr<Region> r)
 155 {
 156         add_region_view_internal (r, true);
 157 }
 158
 159 void
 160 StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 161 {
 162         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::remove_region_view), weak_r));
 163
 164         boost::shared_ptr<Region> r (weak_r.lock());
 165
 166         if (!r) {
 167                 return;
 168         }
 169
 170         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 171                 if (((*i)->region()) == r) {
 172                         delete *i;
 173                         region_views.erase (i);
 174                         break;
 175                 }
 176         }
 177 }
 178
 179 void
 180 StreamView::undisplay_diskstream ()
 181 {
 182         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 183                 delete *i;
 184         }
 185
 186         region_views.clear();
 187 }
 188
 189 void
 190 StreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 191 {
 192         playlist_change_connection.disconnect();
 193         playlist_changed (ds);
 194         playlist_change_connection = ds->PlaylistChanged.connect (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 195 }
 196
 197 void
 198 StreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
 199 {
 200         boost::shared_ptr<Diskstream> sp (ds.lock());
 201         if (!sp) {
 202                 return;
 203         }
 204
 205         playlist_modified (sp);
 206 }
 207
 208 void
 209 StreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
 210 {
 211         /* we do not allow shared_ptr<T> to be bound to slots */
 212         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds));
 213
 214         /* update layers count and the y positions and heights of our regions */
 215         layers = ds->playlist()->top_layer() + 1;
 216         update_contents_y_position_and_height ();
 217
 218         redisplay_diskstream ();
 219 }
 220
 221 void
 222 StreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 223 {
 224         /* XXX: binding to a shared_ptr, is this ok? */
 225         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 226
 227         /* disconnect from old playlist */
 228
 229         for (vector<sigc::connection>::iterator i = playlist_connections.begin(); i != playlist_connections.end(); ++i) {
 230                 (*i).disconnect();
 231         }
 232
 233         playlist_connections.clear();
 234         undisplay_diskstream ();
 235
 236         /* draw it */
 237
 238         redisplay_diskstream ();
 239
 240         /* catch changes */
 241
 242         playlist_connections.push_back (ds->playlist()->Modified.connect (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds)));
 243
 244         /* update layers count and the y positions and heights of our regions */
 245         layers = ds->playlist()->top_layer() + 1;
 246         update_contents_y_position_and_height ();
 247 }
 248
 249 void
 250 StreamView::diskstream_changed ()
 251 {
 252         boost::shared_ptr<Track> t;
 253
 254         if ((t = _trackview.track()) != 0) {
 255                 Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun (*this, &StreamView::display_diskstream), t->diskstream()));
 256         } else {
 257                 Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::undisplay_diskstream));
 258         }
 259 }
 260
 261 void
 262 StreamView::apply_color (Gdk::Color& color, ColorTarget target)
 263
 264 {
 265         list<RegionView *>::iterator i;
 266
 267         switch (target) {
 268         case RegionColor:
 269                 region_color = color;
 270                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 271                         (*i)->set_color (region_color);
 272                 }
 273                 break;
 274
 275         case StreamBaseColor:
 276                 stream_base_color = RGBA_TO_UINT (
 277                         color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
 278                 canvas_rect->property_fill_color_rgba() = stream_base_color;
 279                 break;
 280         }
 281 }
 282
 283 void
 284 StreamView::region_layered (RegionView* rv)
 285 {
 286         rv->get_canvas_group()->lower_to_bottom();
 287
 288         /* don't ever leave it at the bottom, since then it doesn't
 289            get events - the  parent group does instead ...
 290         */
 291
 292         /* this used to be + 1, but regions to the left ended up below
 293           ..something.. and couldn't receive events.  why?  good question.
 294         */
 295         rv->get_canvas_group()->raise (rv->region()->layer() + 2);
 296 }
 297
 298 void
 299 StreamView::rec_enable_changed ()
 300 {
 301         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 302 }
 303
 304 void
 305 StreamView::sess_rec_enable_changed ()
 306 {
 307         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 308 }
 309
 310 void
 311 StreamView::transport_changed()
 312 {
 313         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 314 }
 315
 316 void
 317 StreamView::transport_looped()
 318 {
 319         // to force a new rec region
 320         rec_active = false;
 321         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 322 }
 323
 324 void
 325 StreamView::update_rec_box ()
 326 {
 327         if (rec_active && rec_rects.size() > 0) {
 328                 /* only update the last box */
 329                 RecBoxInfo & rect = rec_rects.back();
 330                 nframes_t at = _trackview.get_diskstream()->current_capture_end();
 331                 double xstart;
 332                 double xend;
 333
 334                 switch (_trackview.track()->mode()) {
 335                 case Normal:
 336                         rect.length = at - rect.start;
 337                         xstart = _trackview.editor.frame_to_pixel (rect.start);
 338                         xend = _trackview.editor.frame_to_pixel (at);
 339                         break;
 340
 341                 case Destructive:
 342                         rect.length = 2;
 343                         xstart = _trackview.editor.frame_to_pixel (_trackview.get_diskstream()->current_capture_start());
 344                         xend = _trackview.editor.frame_to_pixel (at);
 345                         break;
 346                 }
 347
 348                 rect.rectangle->property_x1() = xstart;
 349                 rect.rectangle->property_x2() = xend;
 350         }
 351 }
 352
 353 RegionView*
 354 StreamView::find_view (boost::shared_ptr<const Region> region)
 355 {
 356         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 357
 358                 if ((*i)->region() == region) {
 359                         return *i;
 360                 }
 361         }
 362         return 0;
 363 }
 364
 365 void
 366 StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
 367 {
 368         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 369                 slot (*i);
 370         }
 371 }
 372
 373 void
 374 StreamView::set_selected_regionviews (RegionSelection& regions)
 375 {
 376         bool selected;
 377
 378         // cerr << _trackview.name() << " (selected = " << regions.size() << ")" << endl;
 379         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 380
 381                 selected = false;
 382
 383                 for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
 384                         if (*i == *ii) {
 385                                 selected = true;
 386                         }
 387                 }
 388
 389                 // cerr << "\tregion " << (*i)->region().name() << " selected = " << selected << endl;
 390                 (*i)->set_selected (selected);
 391         }
 392 }
 393
 394 void
 395 StreamView::get_selectables (nframes_t start, nframes_t end, list<Selectable*>& results)
 396 {
 397         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 398                 if ((*i)->region()->coverage(start, end) != OverlapNone) {
 399                         results.push_back (*i);
 400                 }
 401         }
 402 }
 403
 404 void
 405 StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
 406 {
 407         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 408                 if (!sel.regions.contains (*i)) {
 409                         results.push_back (*i);
 410                 }
 411         }
 412 }
 413
 414 void
 415 StreamView::update_contents_y_position_and_height ()
 416 {
 417         canvas_rect->property_y2() = height;
 418
 419         const double lh = height / layers;
 420
 421         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 422                 switch (layer_display) {
 423                 case Overlaid:
 424                         (*i)->set_y_position_and_height (0, height);
 425                         break;
 426                 case Stacked:
 427                         double const y = (*i)->region()->layer() * lh;
 428                         (*i)->set_y_position_and_height (y, lh);
 429                         break;
 430                 }
 431         }
 432
 433         for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
 434                 i->rectangle->property_y2() = height - 1.0;
 435         }
 436 }
 437
 438 void
 439 StreamView::set_layer_display (LayerDisplay d)
 440 {
 441         layer_display = d;
 442         update_contents_y_position_and_height ();
 443 }