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