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)
  49         : _trackview (tv)
  50         , _background_group(new ArdourCanvas::Group(*_trackview.canvas_background))
  51         , canvas_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 {
  59         /* set_position() will position the group */
  60
  61         canvas_rect = new ArdourCanvas::SimpleRect (*_background_group);
  62         canvas_rect->property_x1() = 0.0;
  63         canvas_rect->property_y1() = 0.0;
  64         canvas_rect->property_x2() = _trackview.editor.get_physical_screen_width();
  65         canvas_rect->property_y2() = (double) tv.current_height();
  66
  67         canvas_rect->property_outline_what() = (guint32) (0x1|0x2|0x8);  // outline ends and bottom
  68         // (Fill/Outline colours set in derived classes)
  69
  70         canvas_rect->signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_stream_view_event), canvas_rect, &_trackview));
  71
  72         if (_trackview.is_track()) {
  73                 _trackview.track()->DiskstreamChanged.connect (mem_fun (*this, &StreamView::diskstream_changed));
  74                 _trackview.session().TransportStateChange.connect (mem_fun (*this, &StreamView::transport_changed));
  75                 _trackview.session().TransportLooped.connect (mem_fun (*this, &StreamView::transport_looped));
  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         ColorsChanged.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         if (canvas_rect->property_y2() == h) {
 116                 return 0;
 117         }
 118
 119         canvas_rect->property_y2() = h;
 120
 121         for (RegionViewList::iterator i = region_views.begin(); i != region_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::weak_ptr<Diskstream> wds)
 199 {
 200         boost::shared_ptr<Diskstream> ds = wds.lock();
 201
 202         if (!ds) {
 203                 return;
 204         }
 205
 206         playlist_change_connection.disconnect();
 207         playlist_changed (wds);
 208         playlist_change_connection = ds->PlaylistChanged.connect (bind (mem_fun (*this, &StreamView::playlist_changed), wds));
 209 }
 210
 211 void
 212 StreamView::playlist_modified ()
 213 {
 214         ENSURE_GUI_THREAD (mem_fun (*this, &StreamView::playlist_modified));
 215
 216         redisplay_diskstream ();
 217 }
 218
 219 void
 220 StreamView::playlist_changed (boost::weak_ptr<Diskstream> wptr)
 221 {
 222         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_changed), wptr));
 223
 224         boost::shared_ptr<Diskstream> ds = wptr.lock();
 225
 226         if (!ds) {
 227                 return;
 228         }
 229
 230         /* disconnect from old playlist */
 231
 232         for (vector<sigc::connection>::iterator i = playlist_connections.begin(); i != playlist_connections.end(); ++i) {
 233                 (*i).disconnect();
 234         }
 235
 236         playlist_connections.clear();
 237         undisplay_diskstream ();
 238
 239         /* draw it */
 240
 241         redisplay_diskstream ();
 242
 243         /* catch changes */
 244
 245         playlist_connections.push_back (ds->playlist()->Modified.connect (mem_fun (*this, &StreamView::playlist_modified)));
 246 }
 247
 248 void
 249 StreamView::diskstream_changed ()
 250 {
 251         boost::shared_ptr<Track> t = _trackview.track();
 252
 253         if (t) {
 254                 Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun (*this, &StreamView::display_diskstream), boost::weak_ptr<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         rv->get_canvas_group()->raise (rv->region()->layer());
 291 }
 292
 293 void
 294 StreamView::rec_enable_changed ()
 295 {
 296         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 297 }
 298
 299 void
 300 StreamView::sess_rec_enable_changed ()
 301 {
 302         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 303 }
 304
 305 void
 306 StreamView::transport_changed()
 307 {
 308         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 309 }
 310
 311 void
 312 StreamView::transport_looped()
 313 {
 314         // to force a new rec region
 315         rec_active = false;
 316         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 317 }
 318
 319 void
 320 StreamView::update_rec_box ()
 321 {
 322         if (rec_active && rec_rects.size() > 0) {
 323                 /* only update the last box */
 324                 RecBoxInfo & rect = rec_rects.back();
 325                 nframes_t at = _trackview.get_diskstream()->current_capture_end();
 326                 double xstart;
 327                 double xend;
 328
 329                 switch (_trackview.track()->mode()) {
 330                 case Normal:
 331                         rect.length = at - rect.start;
 332                         xstart = _trackview.editor.frame_to_pixel (rect.start);
 333                         xend = _trackview.editor.frame_to_pixel (at);
 334                         break;
 335
 336                 case Destructive:
 337                         rect.length = 2;
 338                         xstart = _trackview.editor.frame_to_pixel (_trackview.get_diskstream()->current_capture_start());
 339                         xend = _trackview.editor.frame_to_pixel (at);
 340                         break;
 341                 }
 342
 343                 rect.rectangle->property_x1() = xstart;
 344                 rect.rectangle->property_x2() = xend;
 345         }
 346 }
 347
 348 RegionView*
 349 StreamView::find_view (boost::shared_ptr<const Region> region)
 350 {
 351         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 352
 353                 if ((*i)->region() == region) {
 354                         return *i;
 355                 }
 356         }
 357         return 0;
 358 }
 359
 360 void
 361 StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
 362 {
 363         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 364                 slot (*i);
 365         }
 366 }
 367
 368 void
 369 StreamView::set_selected_regionviews (RegionSelection& regions)
 370 {
 371         bool selected;
 372
 373         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 374
 375                 selected = false;
 376
 377                 for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
 378                         if (*i == *ii) {
 379                                 selected = true;
 380                         }
 381                 }
 382
 383                 (*i)->set_selected (selected);
 384         }
 385 }
 386
 387 void
 388 StreamView::get_selectables (nframes_t start, nframes_t end, list<Selectable*>& results)
 389 {
 390         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 391                 if ((*i)->region()->coverage(start, end) != OverlapNone) {
 392                         results.push_back (*i);
 393                 }
 394         }
 395 }
 396
 397 void
 398 StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
 399 {
 400         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 401                 if (!sel.regions.contains (*i)) {
 402                         results.push_back (*i);
 403                 }
 404         }
 405 }
 406