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         , 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 (*canvas_group);
  67         canvas_rect->property_x1() = 0.0;
  68         canvas_rect->property_y1() = 0.0;
  69         canvas_rect->property_x2() = _trackview.editor.frame_to_pixel (max_frames);
  70         canvas_rect->property_y2() = (double) tv.height;
  71         canvas_rect->property_outline_what() = (guint32) (0x1|0x2|0x8);  // outline ends and bottom
  72         // (Fill/Outline colours set in derived classes)
  73
  74         canvas_rect->signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_stream_view_event), canvas_rect, &_trackview));
  75
  76         if (_trackview.is_track()) {
  77                 _trackview.track()->DiskstreamChanged.connect (mem_fun (*this, &StreamView::diskstream_changed));
  78                 _trackview.session().TransportStateChange.connect (mem_fun (*this, &StreamView::transport_changed));
  79                 _trackview.session().TransportLooped.connect (mem_fun (*this, &StreamView::transport_looped));
  80                 _trackview.get_diskstream()->RecordEnableChanged.connect (mem_fun (*this, &StreamView::rec_enable_changed));
  81                 _trackview.session().RecordStateChanged.connect (mem_fun (*this, &StreamView::sess_rec_enable_changed));
  82         }
  83
  84         ColorsChanged.connect (mem_fun (*this, &StreamView::color_handler));
  85 }
  86
  87 StreamView::~StreamView ()
  88 {
  89         undisplay_diskstream ();
  90         delete canvas_group;
  91 }
  92
  93 void
  94 StreamView::attach ()
  95 {
  96         if (_trackview.is_track()) {
  97                 display_diskstream (_trackview.get_diskstream());
  98         }
  99 }
 100
 101 int
 102 StreamView::set_position (gdouble x, gdouble y)
 103 {
 104         canvas_group->property_x() = x;
 105         canvas_group->property_y() = y;
 106         return 0;
 107 }
 108
 109 int
 110 StreamView::set_height (double h)
 111 {
 112         /* limit the values to something sane-ish */
 113         if (h < 10.0 || h > 1000.0) {
 114                 return -1;
 115         }
 116
 117         if (canvas_rect->property_y2() == h) {
 118                 return 0;
 119         }
 120
 121         height = h;
 122         update_contents_y_position_and_height ();
 123         return 0;
 124 }
 125
 126 int
 127 StreamView::set_samples_per_unit (gdouble spp)
 128 {
 129         RegionViewList::iterator i;
 130
 131         if (spp < 1.0) {
 132                 return -1;
 133         }
 134
 135         _samples_per_unit = spp;
 136
 137         for (i = region_views.begin(); i != region_views.end(); ++i) {
 138                 (*i)->set_samples_per_unit (spp);
 139         }
 140
 141         for (vector<RecBoxInfo>::iterator xi = rec_rects.begin(); xi != rec_rects.end(); ++xi) {
 142                 RecBoxInfo &recbox = (*xi);
 143
 144                 gdouble xstart = _trackview.editor.frame_to_pixel ( recbox.start );
 145                 gdouble xend = _trackview.editor.frame_to_pixel ( recbox.start + recbox.length );
 146
 147                 recbox.rectangle->property_x1() = xstart;
 148                 recbox.rectangle->property_x2() = xend;
 149         }
 150
 151         return 0;
 152 }
 153
 154 void
 155 StreamView::add_region_view (boost::shared_ptr<Region> r)
 156 {
 157         add_region_view_internal (r, true);
 158         update_contents_y_position_and_height ();
 159 }
 160
 161 void
 162 StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 163 {
 164         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::remove_region_view), weak_r));
 165
 166         boost::shared_ptr<Region> r (weak_r.lock());
 167
 168         if (!r) {
 169                 return;
 170         }
 171
 172         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 173                 if (((*i)->region()) == r) {
 174                         delete *i;
 175                         region_views.erase (i);
 176                         break;
 177                 }
 178         }
 179 }
 180
 181 void
 182 StreamView::undisplay_diskstream ()
 183 {
 184         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 185                 delete *i;
 186         }
 187
 188         region_views.clear();
 189 }
 190
 191 void
 192 StreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 193 {
 194         playlist_change_connection.disconnect();
 195         playlist_changed (ds);
 196         playlist_change_connection = ds->PlaylistChanged.connect (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 197 }
 198
 199 void
 200 StreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
 201 {
 202         boost::shared_ptr<Diskstream> sp (ds.lock());
 203         if (!sp) {
 204                 return;
 205         }
 206
 207         playlist_modified (sp);
 208 }
 209
 210 void
 211 StreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
 212 {
 213         /* we do not allow shared_ptr<T> to be bound to slots */
 214         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds));
 215
 216         /* update layers count and the y positions and heights of our regions */
 217         layers = ds->playlist()->top_layer() + 1;
 218         update_contents_y_position_and_height ();
 219
 220         redisplay_diskstream ();
 221 }
 222
 223 void
 224 StreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 225 {
 226         /* XXX: binding to a shared_ptr, is this ok? */
 227         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 228
 229         /* disconnect from old playlist */
 230
 231         for (vector<sigc::connection>::iterator i = playlist_connections.begin(); i != playlist_connections.end(); ++i) {
 232                 (*i).disconnect();
 233         }
 234
 235         playlist_connections.clear();
 236         undisplay_diskstream ();
 237
 238         /* draw it */
 239
 240         redisplay_diskstream ();
 241
 242         /* catch changes */
 243
 244         playlist_connections.push_back (ds->playlist()->Modified.connect (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds)));
 245
 246         /* update layers count and the y positions and heights of our regions */
 247         layers = ds->playlist()->top_layer() + 1;
 248         update_contents_y_position_and_height ();
 249 }
 250
 251 void
 252 StreamView::diskstream_changed ()
 253 {
 254         boost::shared_ptr<Track> t;
 255
 256         if ((t = _trackview.track()) != 0) {
 257                 Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun (*this, &StreamView::display_diskstream), t->diskstream()));
 258         } else {
 259                 Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::undisplay_diskstream));
 260         }
 261 }
 262
 263 void
 264 StreamView::apply_color (Gdk::Color& color, ColorTarget target)
 265
 266 {
 267         list<RegionView *>::iterator i;
 268
 269         switch (target) {
 270         case RegionColor:
 271                 region_color = color;
 272                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 273                         (*i)->set_color (region_color);
 274                 }
 275                 break;
 276
 277         case StreamBaseColor:
 278                 stream_base_color = RGBA_TO_UINT (
 279                         color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
 280                 canvas_rect->property_fill_color_rgba() = stream_base_color;
 281                 break;
 282         }
 283 }
 284
 285 void
 286 StreamView::region_layered (RegionView* rv)
 287 {
 288         rv->get_canvas_group()->lower_to_bottom();
 289
 290         /* don't ever leave it at the bottom, since then it doesn't
 291            get events - the  parent group does instead ...
 292         */
 293
 294         /* this used to be + 1, but regions to the left ended up below
 295           ..something.. and couldn't receive events.  why?  good question.
 296         */
 297         rv->get_canvas_group()->raise (rv->region()->layer() + 2);
 298 }
 299
 300 void
 301 StreamView::rec_enable_changed ()
 302 {
 303         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 304 }
 305
 306 void
 307 StreamView::sess_rec_enable_changed ()
 308 {
 309         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 310 }
 311
 312 void
 313 StreamView::transport_changed()
 314 {
 315         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 316 }
 317
 318 void
 319 StreamView::transport_looped()
 320 {
 321         // to force a new rec region
 322         rec_active = false;
 323         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 324 }
 325
 326 void
 327 StreamView::update_rec_box ()
 328 {
 329         if (rec_active && rec_rects.size() > 0) {
 330                 /* only update the last box */
 331                 RecBoxInfo & rect = rec_rects.back();
 332                 nframes_t at = _trackview.get_diskstream()->current_capture_end();
 333                 double xstart;
 334                 double xend;
 335
 336                 switch (_trackview.track()->mode()) {
 337                 case Normal:
 338                         rect.length = at - rect.start;
 339                         xstart = _trackview.editor.frame_to_pixel (rect.start);
 340                         xend = _trackview.editor.frame_to_pixel (at);
 341                         break;
 342
 343                 case Destructive:
 344                         rect.length = 2;
 345                         xstart = _trackview.editor.frame_to_pixel (_trackview.get_diskstream()->current_capture_start());
 346                         xend = _trackview.editor.frame_to_pixel (at);
 347                         break;
 348                 }
 349
 350                 rect.rectangle->property_x1() = xstart;
 351                 rect.rectangle->property_x2() = xend;
 352         }
 353 }
 354
 355 RegionView*
 356 StreamView::find_view (boost::shared_ptr<const Region> region)
 357 {
 358         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 359
 360                 if ((*i)->region() == region) {
 361                         return *i;
 362                 }
 363         }
 364         return 0;
 365 }
 366
 367 void
 368 StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
 369 {
 370         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 371                 slot (*i);
 372         }
 373 }
 374
 375 void
 376 StreamView::set_selected_regionviews (RegionSelection& regions)
 377 {
 378         bool selected;
 379
 380         // cerr << _trackview.name() << " (selected = " << regions.size() << ")" << endl;
 381         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 382
 383                 selected = false;
 384
 385                 for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
 386                         if (*i == *ii) {
 387                                 selected = true;
 388                         }
 389                 }
 390
 391                 // cerr << "\tregion " << (*i)->region().name() << " selected = " << selected << endl;
 392                 (*i)->set_selected (selected);
 393         }
 394 }
 395
 396 void
 397 StreamView::get_selectables (nframes_t start, nframes_t end, list<Selectable*>& results)
 398 {
 399         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 400                 if ((*i)->region()->coverage(start, end) != OverlapNone) {
 401                         results.push_back (*i);
 402                 }
 403         }
 404 }
 405
 406 void
 407 StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
 408 {
 409         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 410                 if (!sel.regions.contains (*i)) {
 411                         results.push_back (*i);
 412                 }
 413         }
 414 }
 415
 416 void
 417 StreamView::update_contents_y_position_and_height ()
 418 {
 419         canvas_rect->property_y2() = height;
 420
 421         const double lh = height / layers;
 422
 423         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 424                 switch (layer_display) {
 425                 case Overlaid:
 426                         (*i)->set_y_position_and_height (0, height);
 427                         break;
 428                 case Stacked:
 429                         double const y = (*i)->region()->layer() * lh;
 430                         (*i)->set_y_position_and_height (y, lh);
 431                         break;
 432                 }
 433         }
 434
 435         for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
 436                 i->rectangle->property_y2() = height - 1.0;
 437         }
 438 }
 439
 440 void
 441 StreamView::set_layer_display (LayerDisplay d)
 442 {
 443         layer_display = d;
 444         update_contents_y_position_and_height ();
 445 }