gtk2_ardour/automation_streamview.cc

   1 /*
   2     Copyright (C) 2001-2007 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 #include <cassert>
  21 #include <utility>
  22
  23 #include <gtkmm.h>
  24
  25 #include <gtkmm2ext/gtk_ui.h>
  26
  27 #include "ardour/midi_region.h"
  28 #include "ardour/midi_source.h"
  29 #include "ardour/region_factory.h"
  30
  31 #include "automation_streamview.h"
  32 #include "region_view.h"
  33 #include "automation_region_view.h"
  34 #include "automation_time_axis.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 "simplerect.h"
  44 #include "simpleline.h"
  45
  46 using namespace std;
  47 using namespace ARDOUR;
  48 using namespace PBD;
  49 using namespace Editing;
  50
  51 AutomationStreamView::AutomationStreamView (AutomationTimeAxisView& tv)
  52         : StreamView (*dynamic_cast<RouteTimeAxisView*>(tv.get_parent()),
  53                       new ArdourCanvas::Group(*tv.canvas_background()),
  54                       new ArdourCanvas::Group(*tv.canvas_display()))
  55         , _automation_view(tv)
  56         , _pending_automation_state (Off)
  57 {
  58         //canvas_rect->property_fill_color_rgba() = stream_base_color;
  59         canvas_rect->property_outline_color_rgba() = RGBA_BLACK;
  60 }
  61
  62 AutomationStreamView::~AutomationStreamView ()
  63 {
  64 }
  65
  66
  67 RegionView*
  68 AutomationStreamView::add_region_view_internal (boost::shared_ptr<Region> region, bool wfd, bool /*recording*/)
  69 {
  70         assert (region);
  71
  72         if (wfd) {
  73                 boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(region);
  74                 if (mr) {
  75                         mr->midi_source()->load_model();
  76                 }
  77         }
  78
  79         const boost::shared_ptr<AutomationControl> control = boost::dynamic_pointer_cast<AutomationControl> (
  80                 region->control (_automation_view.parameter(), true)
  81                 );
  82
  83         boost::shared_ptr<AutomationList> list;
  84         if (control) {
  85                 list = boost::dynamic_pointer_cast<AutomationList>(control->list());
  86                 assert(!control->list() || list);
  87         }
  88
  89         AutomationRegionView *region_view;
  90         std::list<RegionView *>::iterator i;
  91
  92         for (i = region_views.begin(); i != region_views.end(); ++i) {
  93                 if ((*i)->region() == region) {
  94
  95                         /* great. we already have an AutomationRegionView for this Region. use it again. */
  96                         AutomationRegionView* arv = dynamic_cast<AutomationRegionView*>(*i);;
  97
  98                         if (arv->line())
  99                                 arv->line()->set_list (list);
 100                         (*i)->set_valid (true);
 101                         (*i)->enable_display(wfd);
 102                         display_region(arv);
 103
 104                         return 0;
 105                 }
 106         }
 107
 108         region_view = new AutomationRegionView (
 109                 _canvas_group, _automation_view, region,
 110                 _automation_view.parameter (), list,
 111                 _samples_per_unit, region_color
 112                 );
 113
 114         region_view->init (region_color, false);
 115         region_views.push_front (region_view);
 116
 117         /* follow global waveform setting */
 118
 119         if (wfd) {
 120                 region_view->enable_display(true);
 121                 //region_view->midi_region()->midi_source(0)->load_model();
 122         }
 123
 124         display_region(region_view);
 125
 126         /* catch regionview going away */
 127         region->DropReferences.connect (*this, invalidator (*this), boost::bind (&AutomationStreamView::remove_region_view, this, boost::weak_ptr<Region>(region)), gui_context());
 128
 129         /* setup automation state for this region */
 130         boost::shared_ptr<AutomationLine> line = region_view->line ();
 131         if (line && line->the_list()) {
 132                 line->the_list()->set_automation_state (automation_state ());
 133         }
 134
 135         RegionViewAdded (region_view);
 136
 137         return region_view;
 138 }
 139
 140 void
 141 AutomationStreamView::display_region(AutomationRegionView* region_view)
 142 {
 143         region_view->line().reset();
 144 }
 145
 146 void
 147 AutomationStreamView::set_automation_state (AutoState state)
 148 {
 149         /* Setting the automation state for this view sets the state of all regions' lists to the same thing */
 150
 151         if (region_views.empty()) {
 152                 _pending_automation_state = state;
 153         } else {
 154                 list<boost::shared_ptr<AutomationLine> > lines = get_lines ();
 155
 156                 for (list<boost::shared_ptr<AutomationLine> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 157                         if ((*i)->the_list()) {
 158                                 (*i)->the_list()->set_automation_state (state);
 159                         }
 160                 }
 161         }
 162 }
 163
 164 void
 165 AutomationStreamView::redisplay_track ()
 166 {
 167         // Flag region views as invalid and disable drawing
 168         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 169                 (*i)->set_valid (false);
 170                 (*i)->enable_display(false);
 171         }
 172
 173         // Add and display region views, and flag them as valid
 174         if (_trackview.is_track()) {
 175                 _trackview.track()->playlist()->foreach_region (
 176                         sigc::hide_return (sigc::mem_fun (*this, &StreamView::add_region_view))
 177                         );
 178         }
 179
 180         // Stack regions by layer, and remove invalid regions
 181         layer_regions();
 182 }
 183
 184
 185 void
 186 AutomationStreamView::setup_rec_box ()
 187 {
 188 }
 189
 190 void
 191 AutomationStreamView::color_handler ()
 192 {
 193         /*if (_trackview.is_midi_track()) {
 194                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
 195         }
 196
 197         if (!_trackview.is_midi_track()) {
 198                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();;
 199         }*/
 200 }
 201
 202 AutoState
 203 AutomationStreamView::automation_state () const
 204 {
 205         if (region_views.empty()) {
 206                 return _pending_automation_state;
 207         }
 208
 209         boost::shared_ptr<AutomationLine> line = ((AutomationRegionView*) region_views.front())->line ();
 210         if (!line || !line->the_list()) {
 211                 return Off;
 212         }
 213
 214         return line->the_list()->automation_state ();
 215 }
 216
 217 bool
 218 AutomationStreamView::has_automation () const
 219 {
 220         list<boost::shared_ptr<AutomationLine> > lines = get_lines ();
 221
 222         for (list<boost::shared_ptr<AutomationLine> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 223                 if ((*i)->npoints() > 0) {
 224                         return true;
 225                 }
 226         }
 227
 228         return false;
 229 }
 230
 231 /** Our parent AutomationTimeAxisView calls this when the user requests a particular
 232  *  InterpolationStyle; tell the AutomationLists in our regions.
 233  */
 234 void
 235 AutomationStreamView::set_interpolation (AutomationList::InterpolationStyle s)
 236 {
 237         list<boost::shared_ptr<AutomationLine> > lines = get_lines ();
 238
 239         for (list<boost::shared_ptr<AutomationLine> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 240                 (*i)->the_list()->set_interpolation (s);
 241         }
 242 }
 243
 244 AutomationList::InterpolationStyle
 245 AutomationStreamView::interpolation () const
 246 {
 247         if (region_views.empty()) {
 248                 return AutomationList::Linear;
 249         }
 250
 251         AutomationRegionView* v = dynamic_cast<AutomationRegionView*> (region_views.front());
 252         assert (v);
 253
 254         return v->line()->the_list()->interpolation ();
 255 }
 256
 257 /** Clear all automation displayed in this view */
 258 void
 259 AutomationStreamView::clear ()
 260 {
 261         list<boost::shared_ptr<AutomationLine> > lines = get_lines ();
 262
 263         for (list<boost::shared_ptr<AutomationLine> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 264                 (*i)->clear ();
 265         }
 266 }
 267
 268 /** @param start Start position in session frames.
 269  *  @param end End position in session frames.
 270  *  @param bot Bottom position expressed as a fraction of track height where 0 is the bottom of the track.
 271  *  @param top Top position expressed as a fraction of track height where 0 is the bottom of the track.
 272  *  NOTE: this y system is different to that for the StreamView method that this overrides, which is a little
 273  *  confusing.
 274  */
 275 void
 276 AutomationStreamView::get_selectables (framepos_t start, framepos_t end, double botfrac, double topfrac, list<Selectable*>& results)
 277 {
 278         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 279                 AutomationRegionView* arv = dynamic_cast<AutomationRegionView*> (*i);
 280                 assert (arv);
 281                 arv->line()->get_selectables (start, end, botfrac, topfrac, results);
 282         }
 283 }
 284
 285 void
 286 AutomationStreamView::set_selected_points (PointSelection& ps)
 287 {
 288         list<boost::shared_ptr<AutomationLine> > lines = get_lines ();
 289
 290         for (list<boost::shared_ptr<AutomationLine> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 291                 (*i)->set_selected_points (ps);
 292         }
 293 }
 294
 295 list<boost::shared_ptr<AutomationLine> >
 296 AutomationStreamView::get_lines () const
 297 {
 298         list<boost::shared_ptr<AutomationLine> > lines;
 299
 300         for (list<RegionView*>::const_iterator i = region_views.begin(); i != region_views.end(); ++i) {
 301                 AutomationRegionView* arv = dynamic_cast<AutomationRegionView*> (*i);
 302                 assert (arv);
 303                 lines.push_back (arv->line());
 304         }
 305
 306         return lines;
 307 }
 308
 309 struct RegionPositionSorter {
 310         bool operator() (RegionView* a, RegionView* b) {
 311                 return a->region()->position() < b->region()->position();
 312         }
 313 };
 314
 315
 316 /** @param pos Position, in session frames.
 317  *  @return AutomationLine to paste to for that position, or 0 if there is none appropriate.
 318  */
 319 boost::shared_ptr<AutomationLine>
 320 AutomationStreamView::paste_line (framepos_t pos)
 321 {
 322         /* XXX: not sure how best to pick this; for now, just use the last region which starts before pos */
 323
 324         if (region_views.empty()) {
 325                 return boost::shared_ptr<AutomationLine> ();
 326         }
 327
 328         region_views.sort (RegionPositionSorter ());
 329
 330         list<RegionView*>::const_iterator prev = region_views.begin ();
 331
 332         for (list<RegionView*>::const_iterator i = region_views.begin(); i != region_views.end(); ++i) {
 333                 if ((*i)->region()->position() > pos) {
 334                         break;
 335                 }
 336                 prev = i;
 337         }
 338
 339         boost::shared_ptr<Region> r = (*prev)->region ();
 340
 341         /* If *prev doesn't cover pos, it's no good */
 342         if (r->position() > pos || ((r->position() + r->length()) < pos)) {
 343                 return boost::shared_ptr<AutomationLine> ();
 344         }
 345
 346         AutomationRegionView* arv = dynamic_cast<AutomationRegionView*> (*prev);
 347         assert (arv);
 348
 349         return arv->line ();
 350 }