gtk2_ardour/midi_region_view.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 #include <cassert>
  21 #include <algorithm>
  22
  23 #include <gtkmm.h>
  24
  25 #include <gtkmm2ext/gtk_ui.h>
  26
  27 #include <ardour/playlist.h>
  28 #include <ardour/midi_region.h>
  29 #include <ardour/midi_source.h>
  30 #include <ardour/midi_diskstream.h>
  31 #include <ardour/midi_events.h>
  32
  33 #include "streamview.h"
  34 #include "midi_region_view.h"
  35 #include "midi_streamview.h"
  36 #include "midi_time_axis.h"
  37 #include "simplerect.h"
  38 #include "simpleline.h"
  39 #include "diamond.h"
  40 #include "public_editor.h"
  41 #include "ghostregion.h"
  42 #include "midi_time_axis.h"
  43 #include "utils.h"
  44 #include "rgb_macros.h"
  45 #include "gui_thread.h"
  46
  47 #include "i18n.h"
  48
  49 using namespace sigc;
  50 using namespace ARDOUR;
  51 using namespace PBD;
  52 using namespace Editing;
  53 using namespace ArdourCanvas;
  54
  55 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  56                                   Gdk::Color& basic_color)
  57         : RegionView (parent, tv, r, spu, basic_color)
  58         , _active_notes(0)
  59 {
  60 }
  61
  62 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  63                                   Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  64         : RegionView (parent, tv, r, spu, basic_color, visibility)
  65         , _active_notes(0)
  66 {
  67 }
  68
  69 void
  70 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
  71 {
  72         // FIXME: Some redundancy here with RegionView::init.  Need to figure out
  73         // where order is important and where it isn't...
  74
  75         // FIXME
  76         RegionView::init(basic_color, /*wfd*/false);
  77
  78         compute_colors (basic_color);
  79
  80         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  81
  82         set_y_position_and_height (0, trackview.height);
  83
  84         region_muted ();
  85         region_resized (BoundsChanged);
  86         region_locked ();
  87
  88         _region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
  89
  90         set_colors ();
  91
  92         if (wfd) {
  93                 midi_region()->midi_source(0)->load_model();
  94                 display_events();
  95         }
  96 }
  97
  98
  99 void
 100 MidiRegionView::clear_events()
 101 {
 102         for (std::vector<ArdourCanvas::Item*>::iterator i = _events.begin(); i != _events.end(); ++i)
 103                 delete *i;
 104
 105         _events.clear();
 106 }
 107
 108
 109 void
 110 MidiRegionView::display_events()
 111 {
 112         clear_events();
 113
 114         begin_write();
 115
 116         for (size_t i=0; i < midi_region()->midi_source(0)->model()->n_events(); ++i)
 117                 add_event(midi_region()->midi_source(0)->model()->event_at(i));
 118
 119         end_write();
 120 }
 121
 122
 123 MidiRegionView::~MidiRegionView ()
 124 {
 125         in_destructor = true;
 126         end_write();
 127
 128         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 129 }
 130
 131 boost::shared_ptr<ARDOUR::MidiRegion>
 132 MidiRegionView::midi_region() const
 133 {
 134         // "Guaranteed" to succeed...
 135         return boost::dynamic_pointer_cast<MidiRegion>(_region);
 136 }
 137
 138 void
 139 MidiRegionView::region_resized (Change what_changed)
 140 {
 141         RegionView::region_resized(what_changed);
 142
 143         if (what_changed & ARDOUR::PositionChanged) {
 144
 145                 display_events();
 146
 147         } else if (what_changed & Change (StartChanged)) {
 148
 149                 //cerr << "MIDI RV START CHANGED" << endl;
 150
 151         } else if (what_changed & Change (LengthChanged)) {
 152
 153                 //cerr << "MIDI RV LENGTH CHANGED" << endl;
 154
 155         }
 156 }
 157
 158 void
 159 MidiRegionView::reset_width_dependent_items (double pixel_width)
 160 {
 161         RegionView::reset_width_dependent_items(pixel_width);
 162         assert(_pixel_width == pixel_width);
 163
 164         display_events();
 165 }
 166
 167 void
 168 MidiRegionView::set_y_position_and_height (double y, double h)
 169 {
 170         RegionView::set_y_position_and_height(y, h - 1);
 171
 172         display_events();
 173
 174         if (name_text) {
 175                 name_text->raise_to_top();
 176         }
 177 }
 178
 179 void
 180 MidiRegionView::show_region_editor ()
 181 {
 182         cerr << "No MIDI region editor." << endl;
 183 }
 184
 185 GhostRegion*
 186 MidiRegionView::add_ghost (AutomationTimeAxisView& atv)
 187 {
 188         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 189         assert(rtv);
 190
 191         double unit_position = _region->position () / samples_per_unit;
 192         GhostRegion* ghost = new GhostRegion (atv, unit_position);
 193
 194         ghost->set_height ();
 195         ghost->set_duration (_region->length() / samples_per_unit);
 196         ghosts.push_back (ghost);
 197
 198         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 199
 200         return ghost;
 201 }
 202
 203
 204 /** Begin tracking note state for successive calls to add_event
 205  */
 206 void
 207 MidiRegionView::begin_write()
 208 {
 209         _active_notes = new ArdourCanvas::SimpleRect*[128];
 210         for (unsigned i=0; i < 128; ++i)
 211                 _active_notes[i] = NULL;
 212 }
 213
 214
 215 /** Destroy note state for add_event
 216  */
 217 void
 218 MidiRegionView::end_write()
 219 {
 220         delete[] _active_notes;
 221         _active_notes = NULL;
 222 }
 223
 224
 225 void
 226 MidiRegionView::add_event (const MidiEvent& ev)
 227 {
 228         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 229         for (size_t i=0; i < ev.size; ++i) {
 230                 printf("%X ", ev.buffer[i]);
 231         }
 232         printf("\n\n");*/
 233
 234         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 235         MidiStreamView* const view = mtv->midi_view();
 236         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 237
 238         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 239         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 240         const double pixel_range = (trackview.height - footer_height - 5.0) / (double)note_range;
 241
 242         if (mtv->note_mode() == Note) {
 243                 if ((ev.buffer[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
 244                         const Byte& note = ev.buffer[1];
 245                         const double y1 = trackview.height - (pixel_range * (note - view->lowest_note() + 1))
 246                                 - footer_height - 3.0;
 247
 248                         ArdourCanvas::SimpleRect * ev_rect = new Gnome::Canvas::SimpleRect(*group);
 249                         ev_rect->property_x1() = trackview.editor.frame_to_pixel (
 250                                         (nframes_t)ev.time);
 251                         ev_rect->property_y1() = y1;
 252                         ev_rect->property_x2() = trackview.editor.frame_to_pixel (
 253                                         _region->length());
 254                         ev_rect->property_y2() = y1 + ceil(pixel_range);
 255                         ev_rect->property_outline_color_rgba() = 0xFFFFFFAA;
 256                         /* outline all but right edge */
 257                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 258                         ev_rect->property_fill_color_rgba() = 0xFFFFFF66;
 259
 260                         _events.push_back(ev_rect);
 261                         if (_active_notes)
 262                                 _active_notes[note] = ev_rect;
 263
 264                 } else if ((ev.buffer[0] & 0xF0) == MIDI_CMD_NOTE_OFF) {
 265                         const Byte& note = ev.buffer[1];
 266                         if (_active_notes && _active_notes[note]) {
 267                                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)ev.time);
 268                                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 269                                 _active_notes[note] = NULL;
 270                         }
 271                 }
 272
 273         } else if (mtv->note_mode() == Percussion) {
 274                 const Byte& note = ev.buffer[1];
 275                 const double x = trackview.editor.frame_to_pixel((nframes_t)ev.time);
 276                 const double y = trackview.height - (pixel_range * (note - view->lowest_note() + 1))
 277                         - footer_height - 3.0;
 278
 279                 Diamond* ev_diamond = new Diamond(*group, std::min(pixel_range, 5.0));
 280                 ev_diamond->move(x, y);
 281                 ev_diamond->show();
 282                 ev_diamond->property_outline_color_rgba() = 0xFFFFFFDD;
 283                 ev_diamond->property_fill_color_rgba() = 0xFFFFFF66;
 284                 _events.push_back(ev_diamond);
 285         }
 286 }
 287
 288
 289 /** Extend active notes to rightmost edge of region (if length is changed)
 290  */
 291 void
 292 MidiRegionView::extend_active_notes()
 293 {
 294         if (!_active_notes)
 295                 return;
 296
 297         for (unsigned i=0; i < 128; ++i)
 298                 if (_active_notes[i])
 299                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 300 }
 301
 302
 303