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         , canvas_group(group ? group : new ArdourCanvas::Group(*_trackview.canvas_display))
  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 - 1);
  69         canvas_rect->property_y2() = (double) tv.current_height();
  70         canvas_rect->raise(1); // raise above tempo lines
  71
  72         // DR-way
  73         canvas_rect->property_outline_what() = (guint32) (0x2|0x8);  // outline RHS and bottom
  74         // 2.0 way
  75         //canvas_rect->property_outline_what() = (guint32) (0x1|0x2|0x8);  // outline ends and bottom
  76         // (Fill/Outline colours set in derived classes)
  77
  78         canvas_rect->signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_stream_view_event), canvas_rect, &_trackview));
  79
  80         if (_trackview.is_track()) {
  81                 _trackview.track()->DiskstreamChanged.connect (mem_fun (*this, &StreamView::diskstream_changed));
  82                 _trackview.session().TransportStateChange.connect (mem_fun (*this, &StreamView::transport_changed));
  83                 _trackview.session().TransportLooped.connect (mem_fun (*this, &StreamView::transport_looped));
  84                 _trackview.get_diskstream()->RecordEnableChanged.connect (mem_fun (*this, &StreamView::rec_enable_changed));
  85                 _trackview.session().RecordStateChanged.connect (mem_fun (*this, &StreamView::sess_rec_enable_changed));
  86         }
  87
  88         ColorsChanged.connect (mem_fun (*this, &StreamView::color_handler));
  89 }
  90
  91 StreamView::~StreamView ()
  92 {
  93         undisplay_diskstream ();
  94
  95         delete canvas_rect;
  96
  97         if (owns_canvas_group) {
  98                 delete canvas_group;
  99         }
 100 }
 101
 102 void
 103 StreamView::attach ()
 104 {
 105         if (_trackview.is_track()) {
 106                 display_diskstream (_trackview.get_diskstream());
 107         }
 108 }
 109
 110 int
 111 StreamView::set_position (gdouble x, gdouble y)
 112 {
 113         canvas_group->property_x() = x;
 114         canvas_group->property_y() = y;
 115         return 0;
 116 }
 117
 118 int
 119 StreamView::set_height (double h)
 120 {
 121         /* limit the values to something sane-ish */
 122         if (h < 10.0 || h > 1000.0) {
 123                 return -1;
 124         }
 125
 126         if (canvas_rect->property_y2() == h) {
 127                 return 0;
 128         }
 129
 130         height = h;
 131         update_contents_y_position_and_height ();
 132         return 0;
 133 }
 134
 135 int
 136 StreamView::set_samples_per_unit (gdouble spp)
 137 {
 138         RegionViewList::iterator i;
 139
 140         if (spp < 1.0) {
 141                 return -1;
 142         }
 143
 144         _samples_per_unit = spp;
 145
 146         for (i = region_views.begin(); i != region_views.end(); ++i) {
 147                 (*i)->set_samples_per_unit (spp);
 148         }
 149
 150         for (vector<RecBoxInfo>::iterator xi = rec_rects.begin(); xi != rec_rects.end(); ++xi) {
 151                 RecBoxInfo &recbox = (*xi);
 152
 153                 gdouble xstart = _trackview.editor.frame_to_pixel ( recbox.start );
 154                 gdouble xend = _trackview.editor.frame_to_pixel ( recbox.start + recbox.length );
 155
 156                 recbox.rectangle->property_x1() = xstart;
 157                 recbox.rectangle->property_x2() = xend;
 158         }
 159
 160         return 0;
 161 }
 162
 163 void
 164 StreamView::add_region_view (boost::shared_ptr<Region> r)
 165 {
 166         // ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_region_view), r));
 167
 168         add_region_view_internal (r, true);
 169 }
 170
 171 void
 172 StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 173 {
 174         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::remove_region_view), weak_r));
 175
 176         boost::shared_ptr<Region> r (weak_r.lock());
 177
 178         if (!r) {
 179                 return;
 180         }
 181
 182         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 183                 if (((*i)->region()) == r) {
 184                         RegionView* rv = *i;
 185                         region_views.erase (i);
 186                         delete rv;
 187                         break;
 188                 }
 189         }
 190 }
 191
 192 void
 193 StreamView::undisplay_diskstream ()
 194 {
 195         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end() ; ) {
 196                 RegionViewList::iterator next = i;
 197                 ++next;
 198                 delete *i;
 199                 i = next;
 200         }
 201
 202         region_views.clear();
 203 }
 204
 205 void
 206 StreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 207 {
 208         playlist_change_connection.disconnect();
 209         playlist_changed (ds);
 210         playlist_change_connection = ds->PlaylistChanged.connect (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 211 }
 212
 213 void
 214 StreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
 215 {
 216         boost::shared_ptr<Diskstream> sp (ds.lock());
 217         if (!sp) {
 218                 return;
 219         }
 220
 221         playlist_modified (sp);
 222 }
 223
 224 void
 225 StreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
 226 {
 227         /* we do not allow shared_ptr<T> to be bound to slots */
 228         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds));
 229
 230         /* update layers count and the y positions and heights of our regions */
 231         if (ds->playlist()) {
 232                 layers = ds->playlist()->top_layer() + 1;
 233                 update_contents_y_position_and_height ();
 234                 redisplay_diskstream ();
 235         }
 236 }
 237
 238 void
 239 StreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 240 {
 241         /* XXX: binding to a shared_ptr, is this ok? */
 242         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 243
 244         /* disconnect from old playlist */
 245
 246         for (vector<sigc::connection>::iterator i = playlist_connections.begin(); i != playlist_connections.end(); ++i) {
 247                 (*i).disconnect();
 248         }
 249
 250         playlist_connections.clear();
 251         undisplay_diskstream ();
 252
 253         /* update layers count and the y positions and heights of our regions */
 254         layers = ds->playlist()->top_layer() + 1;
 255         update_contents_y_position_and_height ();
 256
 257         /* draw it */
 258         redisplay_diskstream ();
 259
 260         /* catch changes */
 261
 262         playlist_connections.push_back (ds->playlist()->Modified.connect (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds)));
 263 }
 264
 265 void
 266 StreamView::diskstream_changed ()
 267 {
 268         boost::shared_ptr<Track> t;
 269
 270         if ((t = _trackview.track()) != 0) {
 271                 Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun (*this, &StreamView::display_diskstream), t->diskstream()));
 272         } else {
 273                 Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::undisplay_diskstream));
 274         }
 275 }
 276
 277 void
 278 StreamView::apply_color (Gdk::Color& color, ColorTarget target)
 279
 280 {
 281         list<RegionView *>::iterator i;
 282
 283         switch (target) {
 284         case RegionColor:
 285                 region_color = color;
 286                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 287                         (*i)->set_color (region_color);
 288                 }
 289                 break;
 290
 291         case StreamBaseColor:
 292                 stream_base_color = RGBA_TO_UINT (
 293                         color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
 294                 canvas_rect->property_fill_color_rgba() = stream_base_color;
 295                 break;
 296         }
 297 }
 298
 299 void
 300 StreamView::region_layered (RegionView* rv)
 301 {
 302         /* don't ever leave it at the bottom, since then it doesn't
 303            get events - the  parent group does instead ...
 304            we need to raise it above the streamview's
 305            canvas_rect, hence the layer+1 here
 306         */
 307         rv->get_canvas_group()->raise (rv->region()->layer() + 1);
 308 }
 309
 310 void
 311 StreamView::rec_enable_changed ()
 312 {
 313         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 314 }
 315
 316 void
 317 StreamView::sess_rec_enable_changed ()
 318 {
 319         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 320 }
 321
 322 void
 323 StreamView::transport_changed()
 324 {
 325         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 326 }
 327
 328 void
 329 StreamView::transport_looped()
 330 {
 331         // to force a new rec region
 332         rec_active = false;
 333         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 334 }
 335
 336 void
 337 StreamView::update_rec_box ()
 338 {
 339         if (rec_active && rec_rects.size() > 0) {
 340                 /* only update the last box */
 341                 RecBoxInfo & rect = rec_rects.back();
 342                 nframes_t at = _trackview.get_diskstream()->current_capture_end();
 343                 double xstart;
 344                 double xend;
 345
 346                 switch (_trackview.track()->mode()) {
 347                 case Normal:
 348                         rect.length = at - rect.start;
 349                         xstart = _trackview.editor.frame_to_pixel (rect.start);
 350                         xend = _trackview.editor.frame_to_pixel (at);
 351                         break;
 352
 353                 case Destructive:
 354                         rect.length = 2;
 355                         xstart = _trackview.editor.frame_to_pixel (_trackview.get_diskstream()->current_capture_start());
 356                         xend = _trackview.editor.frame_to_pixel (at);
 357                         break;
 358                 }
 359
 360                 rect.rectangle->property_x1() = xstart;
 361                 rect.rectangle->property_x2() = xend;
 362         }
 363 }
 364
 365 RegionView*
 366 StreamView::find_view (boost::shared_ptr<const Region> region)
 367 {
 368         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 369
 370                 if ((*i)->region() == region) {
 371                         return *i;
 372                 }
 373         }
 374         return 0;
 375 }
 376
 377 void
 378 StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
 379 {
 380         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 381                 slot (*i);
 382         }
 383 }
 384
 385 void
 386 StreamView::set_selected_regionviews (RegionSelection& regions)
 387 {
 388         bool selected;
 389
 390         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 391
 392                 selected = false;
 393
 394                 for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
 395                         if (*i == *ii) {
 396                                 selected = true;
 397                         }
 398                 }
 399
 400                 (*i)->set_selected (selected);
 401         }
 402 }
 403
 404 void
 405 StreamView::get_selectables (nframes_t start, nframes_t end, list<Selectable*>& results)
 406 {
 407         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 408                 if ((*i)->region()->coverage(start, end) != OverlapNone) {
 409                         results.push_back (*i);
 410                 }
 411         }
 412 }
 413
 414 void
 415 StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
 416 {
 417         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 418                 if (!sel.regions.contains (*i)) {
 419                         results.push_back (*i);
 420                 }
 421         }
 422 }
 423
 424 void
 425 StreamView::update_contents_y_position_and_height ()
 426 {
 427         canvas_rect->property_y2() = height;
 428
 429         const double lh = height / layers;
 430
 431         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 432                 switch (layer_display) {
 433                 case Overlaid:
 434                         (*i)->set_y_position_and_height (0, height);
 435                         break;
 436                 case Stacked:
 437                         double const y = (*i)->region()->layer() * lh;
 438                         (*i)->set_y_position_and_height (y, lh);
 439                         break;
 440                 }
 441         }
 442
 443         for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
 444                 i->rectangle->property_y2() = height - 1.0;
 445         }
 446 }
 447
 448 void
 449 StreamView::set_layer_display (LayerDisplay d)
 450 {
 451         layer_display = d;
 452         update_contents_y_position_and_height ();
 453 }