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         , _background_group(new ArdourCanvas::Group(*_trackview.canvas_background))
  52         , canvas_group(group ? group : new ArdourCanvas::Group(*_trackview.canvas_display))
  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 (*_background_group);
  67         canvas_rect->property_x1() = 0.0;
  68         canvas_rect->property_y1() = 0.0;
  69         canvas_rect->property_x2() = _trackview.editor.get_physical_screen_width();
  70         canvas_rect->property_y2() = (double) tv.current_height();
  71         canvas_rect->raise(1); // raise above tempo lines
  72
  73         // DR-way
  74         canvas_rect->property_outline_what() = (guint32) (0x2|0x8);  // outline RHS and bottom
  75         // 2.0 way
  76         //canvas_rect->property_outline_what() = (guint32) (0x1|0x2|0x8);  // outline ends and bottom
  77         // (Fill/Outline colours set in derived classes)
  78
  79         canvas_rect->signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_stream_view_event), canvas_rect, &_trackview));
  80
  81         if (_trackview.is_track()) {
  82                 _trackview.track()->DiskstreamChanged.connect (mem_fun (*this, &StreamView::diskstream_changed));
  83                 _trackview.session().TransportStateChange.connect (mem_fun (*this, &StreamView::transport_changed));
  84                 _trackview.session().TransportLooped.connect (mem_fun (*this, &StreamView::transport_looped));
  85                 _trackview.get_diskstream()->RecordEnableChanged.connect (mem_fun (*this, &StreamView::rec_enable_changed));
  86                 _trackview.session().RecordStateChanged.connect (mem_fun (*this, &StreamView::sess_rec_enable_changed));
  87         }
  88
  89         ColorsChanged.connect (mem_fun (*this, &StreamView::color_handler));
  90 }
  91
  92 StreamView::~StreamView ()
  93 {
  94         undisplay_diskstream ();
  95
  96         delete canvas_rect;
  97
  98         if (owns_canvas_group) {
  99                 delete canvas_group;
 100         }
 101 }
 102
 103 void
 104 StreamView::attach ()
 105 {
 106         if (_trackview.is_track()) {
 107                 display_diskstream (_trackview.get_diskstream());
 108         }
 109 }
 110
 111 int
 112 StreamView::set_position (gdouble x, gdouble y)
 113 {
 114         canvas_group->property_x() = x;
 115         canvas_group->property_y() = y;
 116         return 0;
 117 }
 118
 119 int
 120 StreamView::set_height (double h)
 121 {
 122         /* limit the values to something sane-ish */
 123         if (h < 10.0 || h > 1000.0) {
 124                 return -1;
 125         }
 126
 127         if (canvas_rect->property_y2() == h) {
 128                 return 0;
 129         }
 130
 131         height = h;
 132         update_contents_height ();
 133         return 0;
 134 }
 135
 136 int
 137 StreamView::set_samples_per_unit (gdouble spp)
 138 {
 139         RegionViewList::iterator i;
 140
 141         if (spp < 1.0) {
 142                 return -1;
 143         }
 144
 145         _samples_per_unit = spp;
 146
 147         for (i = region_views.begin(); i != region_views.end(); ++i) {
 148                 (*i)->set_samples_per_unit (spp);
 149         }
 150
 151         for (vector<RecBoxInfo>::iterator xi = rec_rects.begin(); xi != rec_rects.end(); ++xi) {
 152                 RecBoxInfo &recbox = (*xi);
 153
 154                 gdouble xstart = _trackview.editor.frame_to_pixel ( recbox.start );
 155                 gdouble xend = _trackview.editor.frame_to_pixel ( recbox.start + recbox.length );
 156
 157                 recbox.rectangle->property_x1() = xstart;
 158                 recbox.rectangle->property_x2() = xend;
 159         }
 160
 161         return 0;
 162 }
 163
 164 void
 165 StreamView::add_region_view (boost::shared_ptr<Region> r)
 166 {
 167         // ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_region_view), r));
 168
 169         add_region_view_internal (r, true);
 170         update_contents_height ();
 171 }
 172
 173 void
 174 StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 175 {
 176         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::remove_region_view), weak_r));
 177
 178         boost::shared_ptr<Region> r (weak_r.lock());
 179
 180         if (!r) {
 181                 return;
 182         }
 183
 184         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 185                 if (((*i)->region()) == r) {
 186                         RegionView* rv = *i;
 187                         region_views.erase (i);
 188                         delete rv;
 189                         break;
 190                 }
 191         }
 192 }
 193
 194 void
 195 StreamView::undisplay_diskstream ()
 196 {
 197         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end() ; ) {
 198                 RegionViewList::iterator next = i;
 199                 ++next;
 200                 delete *i;
 201                 i = next;
 202         }
 203
 204         region_views.clear();
 205 }
 206
 207 void
 208 StreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 209 {
 210         playlist_change_connection.disconnect();
 211         playlist_changed (ds);
 212         playlist_change_connection = ds->PlaylistChanged.connect (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 213 }
 214
 215 void
 216 StreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
 217 {
 218         boost::shared_ptr<Diskstream> sp (ds.lock());
 219         if (!sp) {
 220                 return;
 221         }
 222
 223         playlist_modified (sp);
 224 }
 225
 226 void
 227 StreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
 228 {
 229         /* we do not allow shared_ptr<T> to be bound to slots */
 230         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds));
 231
 232         /* update layers count and the y positions and heights of our regions */
 233         if (ds->playlist()) {
 234                 layers = ds->playlist()->top_layer() + 1;
 235                 update_contents_height ();
 236                 redisplay_diskstream ();
 237         }
 238 }
 239
 240 void
 241 StreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 242 {
 243         /* XXX: binding to a shared_ptr, is this ok? */
 244         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 245
 246         /* disconnect from old playlist */
 247
 248         for (vector<sigc::connection>::iterator i = playlist_connections.begin(); i != playlist_connections.end(); ++i) {
 249                 (*i).disconnect();
 250         }
 251
 252         playlist_connections.clear();
 253         undisplay_diskstream ();
 254
 255         /* update layers count and the y positions and heights of our regions */
 256         layers = ds->playlist()->top_layer() + 1;
 257         update_contents_height ();
 258
 259         /* draw it */
 260         redisplay_diskstream ();
 261
 262         /* catch changes */
 263
 264         playlist_connections.push_back (ds->playlist()->Modified.connect (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds)));
 265 }
 266
 267 void
 268 StreamView::diskstream_changed ()
 269 {
 270         boost::shared_ptr<Track> t;
 271
 272         if ((t = _trackview.track()) != 0) {
 273                 Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun (*this, &StreamView::display_diskstream), t->diskstream()));
 274         } else {
 275                 Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::undisplay_diskstream));
 276         }
 277 }
 278
 279 void
 280 StreamView::apply_color (Gdk::Color& color, ColorTarget target)
 281
 282 {
 283         list<RegionView *>::iterator i;
 284
 285         switch (target) {
 286         case RegionColor:
 287                 region_color = color;
 288                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 289                         (*i)->set_color (region_color);
 290                 }
 291                 break;
 292
 293         case StreamBaseColor:
 294                 stream_base_color = RGBA_TO_UINT (
 295                         color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
 296                 canvas_rect->property_fill_color_rgba() = stream_base_color;
 297                 break;
 298         }
 299 }
 300
 301 void
 302 StreamView::region_layered (RegionView* rv)
 303 {
 304         /* don't ever leave it at the bottom, since then it doesn't
 305            get events - the  parent group does instead ...
 306         */
 307         rv->get_canvas_group()->raise (rv->region()->layer());
 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_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 (0);
 435                         (*i)->set_height (height);
 436                         break;
 437                 case Stacked:
 438                         (*i)->set_y ((*i)->region()->layer() * lh);
 439                         (*i)->set_height (lh);
 440                         break;
 441                 }
 442         }
 443
 444         for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
 445                 i->rectangle->property_y2() = height - 1.0;
 446         }
 447 }
 448
 449 void
 450 StreamView::set_layer_display (LayerDisplay d)
 451 {
 452         layer_display = d;
 453         update_contents_height ();
 454 }