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 #include "color.h"
  44
  45 using namespace ARDOUR;
  46 using namespace PBD;
  47 using namespace Editing;
  48
  49 StreamView::StreamView (RouteTimeAxisView& tv)
  50         : _trackview (tv)
  51         , canvas_group(new ArdourCanvas::Group(*_trackview.canvas_display))
  52         , canvas_rect(new ArdourCanvas::SimpleRect (*canvas_group))
  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         , last_rec_data_frame(0)
  61 {
  62         /* set_position() will position the group */
  63
  64         canvas_rect = new ArdourCanvas::SimpleRect (*canvas_group);
  65         canvas_rect->property_x1() = 0.0;
  66         canvas_rect->property_y1() = 0.0;
  67         canvas_rect->property_x2() = _trackview.editor.frame_to_pixel (max_frames);
  68         canvas_rect->property_y2() = (double) tv.height;
  69         canvas_rect->property_outline_what() = (guint32) (0x1|0x2|0x8);  // outline ends and bottom
  70         // (Fill/Outline colours set in derived classes)
  71
  72         canvas_rect->signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_stream_view_event), canvas_rect, &_trackview));
  73
  74         if (_trackview.is_track()) {
  75                 _trackview.track()->DiskstreamChanged.connect (mem_fun (*this, &StreamView::diskstream_changed));
  76                 _trackview.session().TransportStateChange.connect (mem_fun (*this, &StreamView::transport_changed));
  77                 _trackview.get_diskstream()->RecordEnableChanged.connect (mem_fun (*this, &StreamView::rec_enable_changed));
  78                 _trackview.session().RecordStateChanged.connect (mem_fun (*this, &StreamView::sess_rec_enable_changed));
  79         }
  80
  81         ColorChanged.connect (mem_fun (*this, &StreamView::color_handler));
  82 }
  83
  84 StreamView::~StreamView ()
  85 {
  86         undisplay_diskstream ();
  87         delete canvas_group;
  88 }
  89
  90 void
  91 StreamView::attach ()
  92 {
  93         if (_trackview.is_track()) {
  94                 display_diskstream (_trackview.get_diskstream());
  95         }
  96 }
  97
  98 int
  99 StreamView::set_position (gdouble x, gdouble y)
 100 {
 101         canvas_group->property_x() = x;
 102         canvas_group->property_y() = y;
 103         return 0;
 104 }
 105
 106 int
 107 StreamView::set_height (double h)
 108 {
 109         /* limit the values to something sane-ish */
 110         if (h < 10.0 || h > 1000.0) {
 111                 return -1;
 112         }
 113
 114         if (canvas_rect->property_y2() == h) {
 115                 return 0;
 116         }
 117
 118         height = h;
 119         update_contents_y_position_and_height ();
 120         return 0;
 121 }
 122
 123 int
 124 StreamView::set_samples_per_unit (gdouble spp)
 125 {
 126         RegionViewList::iterator i;
 127
 128         if (spp < 1.0) {
 129                 return -1;
 130         }
 131
 132         _samples_per_unit = spp;
 133
 134         for (i = region_views.begin(); i != region_views.end(); ++i) {
 135                 (*i)->set_samples_per_unit (spp);
 136         }
 137
 138         for (vector<RecBoxInfo>::iterator xi = rec_rects.begin(); xi != rec_rects.end(); ++xi) {
 139                 RecBoxInfo &recbox = (*xi);
 140
 141                 gdouble xstart = _trackview.editor.frame_to_pixel ( recbox.start );
 142                 gdouble xend = _trackview.editor.frame_to_pixel ( recbox.start + recbox.length );
 143
 144                 recbox.rectangle->property_x1() = xstart;
 145                 recbox.rectangle->property_x2() = xend;
 146         }
 147
 148         return 0;
 149 }
 150
 151 void
 152 StreamView::add_region_view (boost::shared_ptr<Region> r)
 153 {
 154         add_region_view_internal (r, true);
 155         update_contents_y_position_and_height ();
 156 }
 157
 158 void
 159 StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 160 {
 161         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::remove_region_view), weak_r));
 162
 163         boost::shared_ptr<Region> r (weak_r.lock());
 164
 165         if (!r) {
 166                 return;
 167         }
 168
 169         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 170                 if (((*i)->region()) == r) {
 171                         delete *i;
 172                         region_views.erase (i);
 173                         break;
 174                 }
 175         }
 176 }
 177
 178 void
 179 StreamView::undisplay_diskstream ()
 180 {
 181         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 182                 delete *i;
 183         }
 184
 185         region_views.clear();
 186 }
 187
 188 void
 189 StreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 190 {
 191         playlist_change_connection.disconnect();
 192         playlist_changed (ds);
 193         playlist_change_connection = ds->PlaylistChanged.connect (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 194 }
 195
 196 void
 197 StreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
 198 {
 199         boost::shared_ptr<Diskstream> sp (ds.lock());
 200         if (!sp) {
 201                 return;
 202         }
 203
 204         playlist_modified (sp);
 205 }
 206
 207 void
 208 StreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
 209 {
 210         /* we do not allow shared_ptr<T> to be bound to slots */
 211         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds));
 212
 213         /* update layers count and the y positions and heights of our regions */
 214         layers = ds->playlist()->top_layer() + 1;
 215         update_contents_y_position_and_height ();
 216
 217         redisplay_diskstream ();
 218 }
 219
 220 void
 221 StreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 222 {
 223         /* XXX: binding to a shared_ptr, is this ok? */
 224         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 225
 226         /* disconnect from old playlist */
 227
 228         for (vector<sigc::connection>::iterator i = playlist_connections.begin(); i != playlist_connections.end(); ++i) {
 229                 (*i).disconnect();
 230         }
 231
 232         playlist_connections.clear();
 233         undisplay_diskstream ();
 234
 235         /* draw it */
 236
 237         redisplay_diskstream ();
 238
 239         /* catch changes */
 240
 241         playlist_connections.push_back (ds->playlist()->Modified.connect (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds)));
 242
 243         /* update layers count and the y positions and heights of our regions */
 244         layers = ds->playlist()->top_layer() + 1;
 245         update_contents_y_position_and_height ();
 246 }
 247
 248 void
 249 StreamView::diskstream_changed ()
 250 {
 251         Track *t;
 252
 253         if ((t = _trackview.track()) != 0) {
 254                 Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun (*this, &StreamView::display_diskstream), t->diskstream()));
 255         } else {
 256                 Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::undisplay_diskstream));
 257         }
 258 }
 259
 260 void
 261 StreamView::apply_color (Gdk::Color& color, ColorTarget target)
 262
 263 {
 264         list<RegionView *>::iterator i;
 265
 266         switch (target) {
 267         case RegionColor:
 268                 region_color = color;
 269                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 270                         (*i)->set_color (region_color);
 271                 }
 272                 break;
 273
 274         case StreamBaseColor:
 275                 stream_base_color = RGBA_TO_UINT (
 276                         color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
 277                 canvas_rect->property_fill_color_rgba() = stream_base_color;
 278                 break;
 279         }
 280 }
 281
 282 void
 283 StreamView::region_layered (RegionView* rv)
 284 {
 285         rv->get_canvas_group()->lower_to_bottom();
 286
 287         /* don't ever leave it at the bottom, since then it doesn't
 288            get events - the  parent group does instead ...
 289         */
 290
 291         /* this used to be + 1, but regions to the left ended up below
 292           ..something.. and couldn't receive events.  why?  good question.
 293         */
 294         rv->get_canvas_group()->raise (rv->region()->layer() + 2);
 295 }
 296
 297 void
 298 StreamView::rec_enable_changed ()
 299 {
 300         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 301 }
 302
 303 void
 304 StreamView::sess_rec_enable_changed ()
 305 {
 306         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 307 }
 308
 309 void
 310 StreamView::transport_changed()
 311 {
 312         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 313 }
 314
 315 void
 316 StreamView::update_rec_box ()
 317 {
 318         if (rec_active && rec_rects.size() > 0) {
 319                 /* only update the last box */
 320                 RecBoxInfo & rect = rec_rects.back();
 321                 nframes_t at = _trackview.get_diskstream()->current_capture_end();
 322                 double xstart;
 323                 double xend;
 324
 325                 switch (_trackview.track()->mode()) {
 326                 case Normal:
 327                         rect.length = at - rect.start;
 328                         xstart = _trackview.editor.frame_to_pixel (rect.start);
 329                         xend = _trackview.editor.frame_to_pixel (at);
 330                         break;
 331
 332                 case Destructive:
 333                         rect.length = 2;
 334                         xstart = _trackview.editor.frame_to_pixel (_trackview.get_diskstream()->current_capture_start());
 335                         xend = _trackview.editor.frame_to_pixel (at);
 336                         break;
 337                 }
 338
 339                 rect.rectangle->property_x1() = xstart;
 340                 rect.rectangle->property_x2() = xend;
 341         }
 342 }
 343
 344 RegionView*
 345 StreamView::find_view (boost::shared_ptr<const Region> region)
 346 {
 347         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 348
 349                 if ((*i)->region() == region) {
 350                         return *i;
 351                 }
 352         }
 353         return 0;
 354 }
 355
 356 void
 357 StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
 358 {
 359         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 360                 slot (*i);
 361         }
 362 }
 363
 364 void
 365 StreamView::set_selected_regionviews (RegionSelection& regions)
 366 {
 367         bool selected;
 368
 369         // cerr << _trackview.name() << " (selected = " << regions.size() << ")" << endl;
 370         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 371
 372                 selected = false;
 373
 374                 for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
 375                         if (*i == *ii) {
 376                                 selected = true;
 377                         }
 378                 }
 379
 380                 // cerr << "\tregion " << (*i)->region().name() << " selected = " << selected << endl;
 381                 (*i)->set_selected (selected);
 382         }
 383 }
 384
 385 void
 386 StreamView::get_selectables (nframes_t start, nframes_t end, list<Selectable*>& results)
 387 {
 388         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 389                 if ((*i)->region()->coverage(start, end) != OverlapNone) {
 390                         results.push_back (*i);
 391                 }
 392         }
 393 }
 394
 395 void
 396 StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
 397 {
 398         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 399                 if (!sel.regions.contains (*i)) {
 400                         results.push_back (*i);
 401                 }
 402         }
 403 }
 404
 405 void
 406 StreamView::update_contents_y_position_and_height ()
 407 {
 408         canvas_rect->property_y2() = height;
 409
 410         const double lh = height / layers;
 411
 412         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 413                 switch (layer_display) {
 414                 case Overlaid:
 415                         (*i)->set_y_position_and_height (0, height);
 416                         break;
 417                 case Stacked:
 418                         double const y = (*i)->region()->layer() * lh;
 419                         (*i)->set_y_position_and_height (y, lh);
 420                         break;
 421                 }
 422         }
 423
 424         for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
 425                 i->rectangle->property_y2() = height - 1.0;
 426         }
 427 }
 428
 429 void
 430 StreamView::set_layer_display (LayerDisplay d)
 431 {
 432         layer_display = d;
 433         update_contents_y_position_and_height ();
 434 }