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         , last_rec_data_frame(0)
  60 {
  61         /* set_position() will position the group */
  62
  63         canvas_rect = new ArdourCanvas::SimpleRect (*canvas_group);
  64         canvas_rect->property_x1() = 0.0;
  65         canvas_rect->property_y1() = 0.0;
  66         canvas_rect->property_x2() = 1000000.0;
  67         canvas_rect->property_y2() = (double) tv.height;
  68         canvas_rect->property_outline_what() = (guint32) (0x1|0x2|0x8);  // outline ends and bottom
  69         // (Fill/Outline colours set in derived classes)
  70
  71         canvas_rect->signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_stream_view_event), canvas_rect, &_trackview));
  72
  73         if (_trackview.is_track()) {
  74                 _trackview.track()->DiskstreamChanged.connect (mem_fun (*this, &StreamView::diskstream_changed));
  75                 _trackview.session().TransportStateChange.connect (mem_fun (*this, &StreamView::transport_changed));
  76                 _trackview.get_diskstream()->RecordEnableChanged.connect (mem_fun (*this, &StreamView::rec_enable_changed));
  77                 _trackview.session().RecordStateChanged.connect (mem_fun (*this, &StreamView::sess_rec_enable_changed));
  78         }
  79
  80         ColorChanged.connect (mem_fun (*this, &StreamView::color_handler));
  81 }
  82
  83 StreamView::~StreamView ()
  84 {
  85         undisplay_diskstream ();
  86         delete canvas_group;
  87 }
  88
  89 void
  90 StreamView::attach ()
  91 {
  92         if (_trackview.is_track()) {
  93                 display_diskstream (_trackview.get_diskstream());
  94         }
  95 }
  96
  97 int
  98 StreamView::set_position (gdouble x, gdouble y)
  99
 100 {
 101         canvas_group->property_x() = x;
 102         canvas_group->property_y() = y;
 103         return 0;
 104 }
 105
 106 int
 107 StreamView::set_height (gdouble h)
 108 {
 109         /* limit the values to something sane-ish */
 110
 111         if (h < 10.0 || h > 1000.0) {
 112                 return -1;
 113         }
 114
 115         canvas_rect->property_y2() = h;
 116
 117         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 118                 (*i)->set_height (h);
 119         }
 120
 121         /*for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 122                 (*i)->set_height (h);
 123         }*/
 124
 125         for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
 126                 RecBoxInfo &recbox = (*i);
 127                 recbox.rectangle->property_y2() = h - 1.0;
 128         }
 129
 130         return 0;
 131 }
 132
 133 int
 134 StreamView::set_samples_per_unit (gdouble spp)
 135 {
 136         RegionViewList::iterator i;
 137
 138         if (spp < 1.0) {
 139                 return -1;
 140         }
 141
 142         _samples_per_unit = spp;
 143
 144         for (i = region_views.begin(); i != region_views.end(); ++i) {
 145                 (*i)->set_samples_per_unit (spp);
 146         }
 147
 148         for (vector<RecBoxInfo>::iterator xi = rec_rects.begin(); xi != rec_rects.end(); ++xi) {
 149                 RecBoxInfo &recbox = (*xi);
 150
 151                 gdouble xstart = _trackview.editor.frame_to_pixel ( recbox.start );
 152                 gdouble xend = _trackview.editor.frame_to_pixel ( recbox.start + recbox.length );
 153
 154                 recbox.rectangle->property_x1() = xstart;
 155                 recbox.rectangle->property_x2() = xend;
 156         }
 157
 158         return 0;
 159 }
 160
 161 void
 162 StreamView::add_region_view (boost::shared_ptr<Region> r)
 163 {
 164         add_region_view_internal (r, true);
 165 }
 166
 167 void
 168 StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 169 {
 170         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::remove_region_view), weak_r));
 171
 172         boost::shared_ptr<Region> r (weak_r.lock());
 173
 174         if (!r) {
 175                 return;
 176         }
 177
 178         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 179                 if (((*i)->region()) == r) {
 180                         delete *i;
 181                         region_views.erase (i);
 182                         break;
 183                 }
 184         }
 185 }
 186
 187 void
 188 StreamView::undisplay_diskstream ()
 189 {
 190         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 191                 delete *i;
 192         }
 193
 194         region_views.clear();
 195 }
 196
 197 void
 198 StreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 199 {
 200         playlist_change_connection.disconnect();
 201         playlist_changed (ds);
 202         playlist_change_connection = ds->PlaylistChanged.connect (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 203 }
 204
 205 void
 206 StreamView::playlist_modified ()
 207 {
 208         ENSURE_GUI_THREAD (mem_fun (*this, &StreamView::playlist_modified));
 209
 210         redisplay_diskstream ();
 211 }
 212
 213 void
 214 StreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 215 {
 216         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 217
 218         /* disconnect from old playlist */
 219
 220         for (vector<sigc::connection>::iterator i = playlist_connections.begin(); i != playlist_connections.end(); ++i) {
 221                 (*i).disconnect();
 222         }
 223
 224         playlist_connections.clear();
 225         undisplay_diskstream ();
 226
 227         /* draw it */
 228
 229         redisplay_diskstream ();
 230
 231         /* catch changes */
 232
 233         playlist_connections.push_back (ds->playlist()->Modified.connect (mem_fun (*this, &StreamView::playlist_modified)));
 234 }
 235
 236 void
 237 StreamView::diskstream_changed ()
 238 {
 239         Track *t;
 240
 241         if ((t = _trackview.track()) != 0) {
 242                 Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun (*this, &StreamView::display_diskstream), t->diskstream()));
 243         } else {
 244                 Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::undisplay_diskstream));
 245         }
 246 }
 247
 248 void
 249 StreamView::apply_color (Gdk::Color& color, ColorTarget target)
 250
 251 {
 252         list<RegionView *>::iterator i;
 253
 254         switch (target) {
 255         case RegionColor:
 256                 region_color = color;
 257                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 258                         (*i)->set_color (region_color);
 259                 }
 260                 break;
 261
 262         case StreamBaseColor:
 263                 stream_base_color = RGBA_TO_UINT (
 264                         color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
 265                 canvas_rect->property_fill_color_rgba() = stream_base_color;
 266                 break;
 267         }
 268 }
 269
 270 void
 271 StreamView::region_layered (RegionView* rv)
 272 {
 273         rv->get_canvas_group()->lower_to_bottom();
 274
 275         /* don't ever leave it at the bottom, since then it doesn't
 276            get events - the  parent group does instead ...
 277         */
 278
 279         /* this used to be + 1, but regions to the left ended up below
 280           ..something.. and couldn't receive events.  why?  good question.
 281         */
 282         rv->get_canvas_group()->raise (rv->region()->layer() + 2);
 283 }
 284
 285 void
 286 StreamView::rec_enable_changed ()
 287 {
 288         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 289 }
 290
 291 void
 292 StreamView::sess_rec_enable_changed ()
 293 {
 294         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 295 }
 296
 297 void
 298 StreamView::transport_changed()
 299 {
 300         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 301 }
 302
 303 void
 304 StreamView::update_rec_box ()
 305 {
 306         if (rec_active && rec_rects.size() > 0) {
 307                 /* only update the last box */
 308                 RecBoxInfo & rect = rec_rects.back();
 309                 nframes_t at = _trackview.get_diskstream()->current_capture_end();
 310                 double xstart;
 311                 double xend;
 312
 313                 switch (_trackview.track()->mode()) {
 314                 case Normal:
 315                         rect.length = at - rect.start;
 316                         xstart = _trackview.editor.frame_to_pixel (rect.start);
 317                         xend = _trackview.editor.frame_to_pixel (at);
 318                         break;
 319
 320                 case Destructive:
 321                         rect.length = 2;
 322                         xstart = _trackview.editor.frame_to_pixel (_trackview.get_diskstream()->current_capture_start());
 323                         xend = _trackview.editor.frame_to_pixel (at);
 324                         break;
 325                 }
 326
 327                 rect.rectangle->property_x1() = xstart;
 328                 rect.rectangle->property_x2() = xend;
 329         }
 330 }
 331
 332 RegionView*
 333 StreamView::find_view (boost::shared_ptr<const Region> region)
 334 {
 335         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 336
 337                 if ((*i)->region() == region) {
 338                         return *i;
 339                 }
 340         }
 341         return 0;
 342 }
 343
 344 void
 345 StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
 346 {
 347         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 348                 slot (*i);
 349         }
 350 }
 351
 352 void
 353 StreamView::set_selected_regionviews (RegionSelection& regions)
 354 {
 355         bool selected;
 356
 357         // cerr << _trackview.name() << " (selected = " << regions.size() << ")" << endl;
 358         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 359
 360                 selected = false;
 361
 362                 for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
 363                         if (*i == *ii) {
 364                                 selected = true;
 365                         }
 366                 }
 367
 368                 // cerr << "\tregion " << (*i)->region().name() << " selected = " << selected << endl;
 369                 (*i)->set_selected (selected);
 370         }
 371 }
 372
 373 void
 374 StreamView::get_selectables (nframes_t start, nframes_t end, list<Selectable*>& results)
 375 {
 376         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 377                 if ((*i)->region()->coverage(start, end) != OverlapNone) {
 378                         results.push_back (*i);
 379                 }
 380         }
 381 }
 382
 383 void
 384 StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
 385 {
 386         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 387                 if (!sel.regions.contains (*i)) {
 388                         results.push_back (*i);
 389                 }
 390         }
 391 }
 392