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                         }
 101                         (*i)->set_valid (true);
 102                         (*i)->enable_display(wfd);
 103                         display_region(arv);
 104
 105                         return 0;
 106                 }
 107         }
 108
 109         region_view = new AutomationRegionView (
 110                 _canvas_group, _automation_view, region,
 111                 _automation_view.parameter (), list,
 112                 _samples_per_unit, region_color
 113                 );
 114
 115         region_view->init (region_color, false);
 116         region_views.push_front (region_view);
 117
 118         /* follow global waveform setting */
 119
 120         if (wfd) {
 121                 region_view->enable_display(true);
 122                 //region_view->midi_region()->midi_source(0)->load_model();
 123         }
 124
 125         display_region(region_view);
 126
 127         /* catch regionview going away */
 128         region->DropReferences.connect (*this, invalidator (*this), boost::bind (&AutomationStreamView::remove_region_view, this, boost::weak_ptr<Region>(region)), gui_context());
 129
 130         /* setup automation state for this region */
 131         boost::shared_ptr<AutomationLine> line = region_view->line ();
 132         if (line && line->the_list()) {
 133                 line->the_list()->set_automation_state (automation_state ());
 134         }
 135
 136         RegionViewAdded (region_view);
 137
 138         return region_view;
 139 }
 140
 141 void
 142 AutomationStreamView::display_region(AutomationRegionView* region_view)
 143 {
 144         region_view->line().reset();
 145 }
 146
 147 void
 148 AutomationStreamView::set_automation_state (AutoState state)
 149 {
 150         /* Setting the automation state for this view sets the state of all regions' lists to the same thing */
 151
 152         if (region_views.empty()) {
 153                 _pending_automation_state = state;
 154         } else {
 155                 list<boost::shared_ptr<AutomationLine> > lines = get_lines ();
 156
 157                 for (list<boost::shared_ptr<AutomationLine> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 158                         if ((*i)->the_list()) {
 159                                 (*i)->the_list()->set_automation_state (state);
 160                         }
 161                 }
 162         }
 163 }
 164
 165 void
 166 AutomationStreamView::redisplay_track ()
 167 {
 168         // Flag region views as invalid and disable drawing
 169         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 170                 (*i)->set_valid (false);
 171                 (*i)->enable_display(false);
 172         }
 173
 174         // Add and display region views, and flag them as valid
 175         if (_trackview.is_track()) {
 176                 _trackview.track()->playlist()->foreach_region (
 177                         sigc::hide_return (sigc::mem_fun (*this, &StreamView::add_region_view))
 178                         );
 179         }
 180
 181         // Stack regions by layer, and remove invalid regions
 182         layer_regions();
 183 }
 184
 185
 186 void
 187 AutomationStreamView::setup_rec_box ()
 188 {
 189 }
 190
 191 void
 192 AutomationStreamView::color_handler ()
 193 {
 194         /*if (_trackview.is_midi_track()) {
 195                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
 196         }
 197
 198         if (!_trackview.is_midi_track()) {
 199                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();;
 200         }*/
 201 }
 202
 203 AutoState
 204 AutomationStreamView::automation_state () const
 205 {
 206         if (region_views.empty()) {
 207                 return _pending_automation_state;
 208         }
 209
 210         boost::shared_ptr<AutomationLine> line = ((AutomationRegionView*) region_views.front())->line ();
 211         if (!line || !line->the_list()) {
 212                 return Off;
 213         }
 214
 215         return line->the_list()->automation_state ();
 216 }
 217
 218 bool
 219 AutomationStreamView::has_automation () const
 220 {
 221         list<boost::shared_ptr<AutomationLine> > lines = get_lines ();
 222
 223         for (list<boost::shared_ptr<AutomationLine> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 224                 if ((*i)->npoints() > 0) {
 225                         return true;
 226                 }
 227         }
 228
 229         return false;
 230 }
 231
 232 /** Our parent AutomationTimeAxisView calls this when the user requests a particular
 233  *  InterpolationStyle; tell the AutomationLists in our regions.
 234  */
 235 void
 236 AutomationStreamView::set_interpolation (AutomationList::InterpolationStyle s)
 237 {
 238         list<boost::shared_ptr<AutomationLine> > lines = get_lines ();
 239
 240         for (list<boost::shared_ptr<AutomationLine> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 241                 (*i)->the_list()->set_interpolation (s);
 242         }
 243 }
 244
 245 AutomationList::InterpolationStyle
 246 AutomationStreamView::interpolation () const
 247 {
 248         if (region_views.empty()) {
 249                 return AutomationList::Linear;
 250         }
 251
 252         AutomationRegionView* v = dynamic_cast<AutomationRegionView*> (region_views.front());
 253         assert (v);
 254
 255         return v->line()->the_list()->interpolation ();
 256 }
 257
 258 /** Clear all automation displayed in this view */
 259 void
 260 AutomationStreamView::clear ()
 261 {
 262         list<boost::shared_ptr<AutomationLine> > lines = get_lines ();
 263
 264         for (list<boost::shared_ptr<AutomationLine> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 265                 (*i)->clear ();
 266         }
 267 }
 268
 269 /** @param start Start position in session frames.
 270  *  @param end End position in session frames.
 271  *  @param bot Bottom position expressed as a fraction of track height where 0 is the bottom of the track.
 272  *  @param top Top position expressed as a fraction of track height where 0 is the bottom of the track.
 273  *  NOTE: this y system is different to that for the StreamView method that this overrides, which is a little
 274  *  confusing.
 275  */
 276 void
 277 AutomationStreamView::get_selectables (framepos_t start, framepos_t end, double botfrac, double topfrac, list<Selectable*>& results)
 278 {
 279         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 280                 AutomationRegionView* arv = dynamic_cast<AutomationRegionView*> (*i);
 281                 assert (arv);
 282                 arv->line()->get_selectables (start, end, botfrac, topfrac, results);
 283         }
 284 }
 285
 286 void
 287 AutomationStreamView::set_selected_points (PointSelection& ps)
 288 {
 289         list<boost::shared_ptr<AutomationLine> > lines = get_lines ();
 290
 291         for (list<boost::shared_ptr<AutomationLine> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 292                 (*i)->set_selected_points (ps);
 293         }
 294 }
 295
 296 list<boost::shared_ptr<AutomationLine> >
 297 AutomationStreamView::get_lines () const
 298 {
 299         list<boost::shared_ptr<AutomationLine> > lines;
 300
 301         for (list<RegionView*>::const_iterator i = region_views.begin(); i != region_views.end(); ++i) {
 302                 AutomationRegionView* arv = dynamic_cast<AutomationRegionView*> (*i);
 303                 assert (arv);
 304                 lines.push_back (arv->line());
 305         }
 306
 307         return lines;
 308 }
 309
 310 struct RegionPositionSorter {
 311         bool operator() (RegionView* a, RegionView* b) {
 312                 return a->region()->position() < b->region()->position();
 313         }
 314 };
 315
 316
 317 /** @param pos Position, in session frames.
 318  *  @return AutomationLine to paste to for that position, or 0 if there is none appropriate.
 319  */
 320 boost::shared_ptr<AutomationLine>
 321 AutomationStreamView::paste_line (framepos_t pos)
 322 {
 323         /* XXX: not sure how best to pick this; for now, just use the last region which starts before pos */
 324
 325         if (region_views.empty()) {
 326                 return boost::shared_ptr<AutomationLine> ();
 327         }
 328
 329         region_views.sort (RegionPositionSorter ());
 330
 331         list<RegionView*>::const_iterator prev = region_views.begin ();
 332
 333         for (list<RegionView*>::const_iterator i = region_views.begin(); i != region_views.end(); ++i) {
 334                 if ((*i)->region()->position() > pos) {
 335                         break;
 336                 }
 337                 prev = i;
 338         }
 339
 340         boost::shared_ptr<Region> r = (*prev)->region ();
 341
 342         /* If *prev doesn't cover pos, it's no good */
 343         if (r->position() > pos || ((r->position() + r->length()) < pos)) {
 344                 return boost::shared_ptr<AutomationLine> ();
 345         }
 346
 347         AutomationRegionView* arv = dynamic_cast<AutomationRegionView*> (*prev);
 348         assert (arv);
 349
 350         return arv->line ();
 351 }