gtk2_ardour/ghostregion.cc

   1 /*
   2     Copyright (C) 2000-2007 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
  20 #include "evoral/Note.hpp"
  21 #include "ardour_ui.h"
  22 #include "automation_time_axis.h"
  23 #include "canvas-note.h"
  24 #include "ghostregion.h"
  25 #include "midi_streamview.h"
  26 #include "midi_time_axis.h"
  27 #include "rgb_macros.h"
  28 #include "simplerect.h"
  29 #include "waveview.h"
  30
  31 using namespace std;
  32 using namespace Editing;
  33 using namespace ArdourCanvas;
  34 using namespace ARDOUR;
  35
  36 PBD::Signal1<void,GhostRegion*> GhostRegion::CatchDeletion;
  37
  38 GhostRegion::GhostRegion (ArdourCanvas::Group* parent, TimeAxisView& tv, TimeAxisView& source_tv, double initial_pos)
  39         : trackview (tv)
  40         , source_trackview (source_tv)
  41 {
  42         group = new ArdourCanvas::Group (*parent);
  43         group->property_x() = initial_pos;
  44         group->property_y() = 0.0;
  45
  46         base_rect = new ArdourCanvas::SimpleRect (*group);
  47         base_rect->property_x1() = (double) 0.0;
  48         base_rect->property_y1() = (double) 0.0;
  49         base_rect->property_y2() = (double) trackview.current_height();
  50         base_rect->property_outline_what() = (guint32) 0;
  51
  52         if (!is_automation_ghost()) {
  53                 base_rect->hide();
  54         }
  55
  56         GhostRegion::set_colors();
  57
  58         /* the parent group of a ghostregion is a dedicated group for ghosts,
  59            so the new ghost would want to get to the top of that group*/
  60         group->raise_to_top ();
  61 }
  62
  63 GhostRegion::~GhostRegion ()
  64 {
  65         CatchDeletion (this);
  66         delete base_rect;
  67         delete group;
  68 }
  69
  70 void
  71 GhostRegion::set_duration (double units)
  72 {
  73         base_rect->property_x2() = units;
  74 }
  75
  76 void
  77 GhostRegion::set_height ()
  78 {
  79         base_rect->property_y2() = (double) trackview.current_height();
  80 }
  81
  82 void
  83 GhostRegion::set_colors ()
  84 {
  85         if (is_automation_ghost()) {
  86                 base_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_GhostTrackBase.get();
  87                 base_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_GhostTrackBase.get();
  88         }
  89 }
  90
  91 guint
  92 GhostRegion::source_track_color(unsigned char alpha)
  93 {
  94         Gdk::Color color = source_trackview.color();
  95         return RGBA_TO_UINT (color.get_red() / 256, color.get_green() / 256, color.get_blue() / 256, alpha);
  96 }
  97
  98 bool
  99 GhostRegion::is_automation_ghost()
 100 {
 101         return (dynamic_cast<AutomationTimeAxisView*>(&trackview)) != 0;
 102 }
 103
 104 AudioGhostRegion::AudioGhostRegion(TimeAxisView& tv, TimeAxisView& source_tv, double initial_unit_pos)
 105         : GhostRegion(tv.ghost_group(), tv, source_tv, initial_unit_pos)
 106 {
 107
 108 }
 109
 110 void
 111 AudioGhostRegion::set_samples_per_unit (double spu)
 112 {
 113         for (vector<WaveView*>::iterator i = waves.begin(); i != waves.end(); ++i) {
 114                 (*i)->property_samples_per_unit() = spu;
 115         }
 116 }
 117
 118 void
 119 AudioGhostRegion::set_height ()
 120 {
 121         gdouble ht;
 122         vector<WaveView*>::iterator i;
 123         uint32_t n;
 124
 125         GhostRegion::set_height();
 126
 127         ht = ((trackview.current_height()) / (double) waves.size());
 128
 129         for (n = 0, i = waves.begin(); i != waves.end(); ++i, ++n) {
 130                 gdouble yoff = n * ht;
 131                 (*i)->property_height() = ht;
 132                 (*i)->property_y() = yoff;
 133         }
 134 }
 135
 136 void
 137 AudioGhostRegion::set_colors ()
 138 {
 139         GhostRegion::set_colors();
 140         guint fill_color;
 141
 142         if (is_automation_ghost()) {
 143                 fill_color = ARDOUR_UI::config()->canvasvar_GhostTrackWaveFill.get();
 144         }
 145         else {
 146                 fill_color = source_track_color(200);
 147         }
 148
 149         for (uint32_t n=0; n < waves.size(); ++n) {
 150                 waves[n]->property_wave_color() = ARDOUR_UI::config()->canvasvar_GhostTrackWave.get();
 151                 waves[n]->property_fill_color() = fill_color;
 152                 waves[n]->property_clip_color() = ARDOUR_UI::config()->canvasvar_GhostTrackWaveClip.get();
 153                 waves[n]->property_zero_color() = ARDOUR_UI::config()->canvasvar_GhostTrackZeroLine.get();
 154         }
 155 }
 156
 157 /** The general constructor; called when the destination timeaxisview doesn't have
 158  *  a midistreamview.
 159  *
 160  *  @param tv TimeAxisView that this ghost region is on.
 161  *  @param source_tv TimeAxisView that we are the ghost for.
 162  */
 163 MidiGhostRegion::MidiGhostRegion(TimeAxisView& tv, TimeAxisView& source_tv, double initial_unit_pos)
 164         : GhostRegion(tv.ghost_group(), tv, source_tv, initial_unit_pos)
 165         , _optimization_iterator (events.end ())
 166 {
 167         base_rect->lower_to_bottom();
 168         update_range ();
 169
 170         midi_view()->NoteRangeChanged.connect (sigc::mem_fun (*this, &MidiGhostRegion::update_range));
 171 }
 172
 173 /**
 174  *  @param msv MidiStreamView that this ghost region is on.
 175  *  @param source_tv TimeAxisView that we are the ghost for.
 176  */
 177 MidiGhostRegion::MidiGhostRegion(MidiStreamView& msv, TimeAxisView& source_tv, double initial_unit_pos)
 178         : GhostRegion(msv.midi_underlay_group, msv.trackview(), source_tv, initial_unit_pos)
 179         , _optimization_iterator (events.end ())
 180 {
 181         base_rect->lower_to_bottom();
 182         update_range ();
 183
 184         midi_view()->NoteRangeChanged.connect (sigc::mem_fun (*this, &MidiGhostRegion::update_range));
 185 }
 186
 187 MidiGhostRegion::~MidiGhostRegion()
 188 {
 189         clear_events ();
 190 }
 191
 192 MidiGhostRegion::Event::Event(ArdourCanvas::CanvasNoteEvent* e)
 193         : event(e)
 194 {
 195
 196 }
 197
 198 MidiGhostRegion::Note::Note(ArdourCanvas::CanvasNote* n, ArdourCanvas::Group* g)
 199         : Event(n)
 200 {
 201         rect = new ArdourCanvas::SimpleRect(*g, n->x1(), n->y1(), n->x2(), n->y2());
 202 }
 203
 204 MidiGhostRegion::Note::~Note()
 205 {
 206         delete rect;
 207 }
 208
 209 void
 210 MidiGhostRegion::set_samples_per_unit (double /*spu*/)
 211 {
 212 }
 213
 214 /** @return MidiStreamView that we are providing a ghost for */
 215 MidiStreamView*
 216 MidiGhostRegion::midi_view ()
 217 {
 218         StreamView* sv = source_trackview.view ();
 219         assert (sv);
 220         MidiStreamView* msv = dynamic_cast<MidiStreamView*> (sv);
 221         assert (msv);
 222
 223         return msv;
 224 }
 225
 226 void
 227 MidiGhostRegion::set_height ()
 228 {
 229         GhostRegion::set_height();
 230         update_range();
 231 }
 232
 233 void
 234 MidiGhostRegion::set_colors()
 235 {
 236         MidiGhostRegion::Note* note;
 237         guint fill = source_track_color(200);
 238
 239         GhostRegion::set_colors();
 240
 241         for (EventList::iterator it = events.begin(); it != events.end(); ++it) {
 242                 if ((note = dynamic_cast<MidiGhostRegion::Note*>(*it)) != 0) {
 243                         note->rect->property_fill_color_rgba() = fill;
 244                         note->rect->property_outline_color_rgba() =  ARDOUR_UI::config()->canvasvar_GhostTrackMidiOutline.get();
 245                 }
 246         }
 247 }
 248
 249 void
 250 MidiGhostRegion::update_range ()
 251 {
 252         MidiStreamView* mv = midi_view();
 253
 254         if (!mv) {
 255                 return;
 256         }
 257
 258         MidiGhostRegion::Note* note;
 259         double const h = trackview.current_height() / double (mv->contents_note_range ());
 260
 261         for (EventList::iterator it = events.begin(); it != events.end(); ++it) {
 262                 if ((note = dynamic_cast<MidiGhostRegion::Note*>(*it)) != 0) {
 263                         uint8_t const note_num = note->event->note()->note();
 264
 265                         if (note_num < mv->lowest_note() || note_num > mv->highest_note()) {
 266                                 note->rect->hide();
 267                         } else {
 268                                 note->rect->show();
 269                                 double const y = trackview.current_height() - (note_num + 1 - mv->lowest_note()) * h + 1;
 270                                 note->rect->property_y1() = y;
 271                                 note->rect->property_y2() = y + h;
 272                         }
 273                 }
 274         }
 275 }
 276
 277 void
 278 MidiGhostRegion::add_note(ArdourCanvas::CanvasNote* n)
 279 {
 280         Note* note = new Note(n, group);
 281         events.push_back(note);
 282
 283         note->rect->property_fill_color_rgba() = source_track_color(200);
 284         note->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_GhostTrackMidiOutline.get();
 285
 286         MidiStreamView* mv = midi_view();
 287
 288         if (mv) {
 289                 const uint8_t note_num = n->note()->note();
 290
 291                 if (note_num < mv->lowest_note() || note_num > mv->highest_note()) {
 292                         note->rect->hide();
 293                 } else {
 294                         const double y = mv->note_to_y(note_num);
 295                         note->rect->property_y1() = y;
 296                         note->rect->property_y2() = y + mv->note_height();
 297                 }
 298         }
 299 }
 300
 301 void
 302 MidiGhostRegion::clear_events()
 303 {
 304         for (EventList::iterator it = events.begin(); it != events.end(); ++it) {
 305                 delete *it;
 306         }
 307
 308         events.clear();
 309 }
 310
 311 /** Update the x positions of our representation of a parent's note.
 312  *  @param parent The CanvasNote from the parent MidiRegionView.
 313  */
 314 void
 315 MidiGhostRegion::update_note (ArdourCanvas::CanvasNote* parent)
 316 {
 317         Event* ev = find_event (parent);
 318         if (!ev) {
 319                 return;
 320         }
 321
 322         Note* note = dynamic_cast<Note *> (ev);
 323         if (note) {
 324                 double const x1 = parent->property_x1 ();
 325                 double const x2 = parent->property_x2 ();
 326                 note->rect->property_x1 () = x1;
 327                 note->rect->property_x2 () = x2;
 328         }
 329 }
 330
 331 /** Given a note in our parent region (ie the actual MidiRegionView), find our
 332  *  representation of it.
 333  *  @return Our Event, or 0 if not found.
 334  */
 335
 336 MidiGhostRegion::Event *
 337 MidiGhostRegion::find_event (ArdourCanvas::CanvasNote* parent)
 338 {
 339         /* we are using _optimization_iterator to speed up the common case where a caller
 340            is going through our notes in order.
 341         */
 342
 343         if (_optimization_iterator != events.end()) {
 344                 ++_optimization_iterator;
 345         }
 346
 347         if (_optimization_iterator != events.end() && (*_optimization_iterator)->event == parent) {
 348                 return *_optimization_iterator;
 349         }
 350
 351         for (_optimization_iterator = events.begin(); _optimization_iterator != events.end(); ++_optimization_iterator) {
 352                 if ((*_optimization_iterator)->event == parent) {
 353                         return *_optimization_iterator;
 354                 }
 355         }
 356
 357         return 0;
 358 }