gtk2_ardour/marker.cc

   1 /*
   2     Copyright (C) 2001 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     $Id$
  19 */
  20
  21 #include <sigc++/bind.h>
  22 #include <ardour/tempo.h>
  23
  24 #include "marker.h"
  25 #include "public_editor.h"
  26 #include "utils.h"
  27 #include "canvas_impl.h"
  28
  29 #include "i18n.h"
  30
  31 Marker::Marker (PublicEditor& ed, ArdourCanvas::Group& parent, guint32 rgba, const string& annotation,
  32                 Type type, jack_nframes_t frame, bool handle_events)
  33
  34         : editor (ed), _type(type)
  35 {
  36         double label_offset = 0;
  37
  38         /* Shapes we use:
  39
  40           Mark:
  41
  42            (0,0) -> (6,0)
  43              ^        |
  44              |        V
  45            (0,5)    (6,5)
  46                \    /
  47                (3,10)
  48
  49
  50            TempoMark:
  51            MeterMark:
  52
  53                (3,0)
  54               /      \
  55            (0,5) -> (6,5)
  56              ^        |
  57              |        V
  58            (0,10)<-(6,10)
  59
  60
  61            Start:
  62
  63            0,0  -> 5,0
  64             |          \
  65             |          10,5
  66             |          /
  67            0,10 -> 5,10
  68
  69            End:
  70
  71              5,0 -> 10,0
  72              /       |
  73            0,5       |
  74              \       |
  75              5,10 <-10,10
  76
  77
  78            TransportStart:
  79
  80              0,0->3,0
  81               |    |
  82               |    |
  83               |    |
  84               |   3,8 -> 7,8
  85               |           |
  86              0,11 ------ 7,11
  87
  88            TransportEnd:
  89
  90                       4,0->7,0
  91                        |    |
  92                        |    |
  93                        |    |
  94              0,8 ---- 4,8   |
  95               |             |
  96              0,11 -------- 7,11
  97
  98
  99              PunchIn:
 100
 101              0,0 ------> 8,0
 102               |       /
 103               |      /
 104               |    4,5
 105               |     |
 106               |     |
 107               |     |
 108              0,11->4,11
 109
 110              PunchOut
 111
 112            0,0 -->-8,0
 113             \       |
 114              \      |
 115              4,5    |
 116               |     |
 117               |     |
 118               |     |
 119              4,11->8,11
 120
 121
 122         */
 123
 124         switch (type) {
 125         case Mark:
 126                 points = new ArdourCanvas::Points ();
 127
 128                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 129                 points->push_back (Gnome::Art::Point (6.0, 0.0));
 130                 points->push_back (Gnome::Art::Point (6.0, 5.0));
 131                 points->push_back (Gnome::Art::Point (3.0, 10.0));
 132                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 133                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 134
 135                 shift = 3;
 136                 label_offset = 8.0;
 137                 break;
 138
 139         case Tempo:
 140         case Meter:
 141
 142                 points = new ArdourCanvas::Points ();
 143                 points->push_back (Gnome::Art::Point (3.0, 0.0));
 144                 points->push_back (Gnome::Art::Point (6.0, 5.0));
 145                 points->push_back (Gnome::Art::Point (6.0, 10.0));
 146                 points->push_back (Gnome::Art::Point (0.0, 10.0));
 147                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 148                 points->push_back (Gnome::Art::Point (3.0, 0.0));
 149
 150                 shift = 3;
 151                 label_offset = 8.0;
 152                 break;
 153
 154         case Start:
 155                 points = new ArdourCanvas::Points ();
 156                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 157                 points->push_back (Gnome::Art::Point (5.0, 0.0));
 158                 points->push_back (Gnome::Art::Point (10.0, 5.0));
 159                 points->push_back (Gnome::Art::Point (5.0, 10.0));
 160                 points->push_back (Gnome::Art::Point (0.0, 10.0));
 161                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 162
 163                 shift = 10;
 164                 label_offset = 12.0;
 165                 break;
 166
 167         case End:
 168                 points = new ArdourCanvas::Points ();
 169                 points->push_back (Gnome::Art::Point (5.0, 0.0));
 170                 points->push_back (Gnome::Art::Point (10.0, 0.0));
 171                 points->push_back (Gnome::Art::Point (10.0, 10.0));
 172                 points->push_back (Gnome::Art::Point (5.0, 10.0));
 173                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 174                 points->push_back (Gnome::Art::Point (5.0, 0.0));
 175
 176                 shift = 0;
 177                 label_offset = 12.0;
 178                 break;
 179
 180         case LoopStart:
 181                 points = new ArdourCanvas::Points ();
 182                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 183                 points->push_back (Gnome::Art::Point (4.0, 0.0));
 184                 points->push_back (Gnome::Art::Point (4.0, 8.0));
 185                 points->push_back (Gnome::Art::Point (8.0, 8.0));
 186                 points->push_back (Gnome::Art::Point (8.0, 11.0));
 187                 points->push_back (Gnome::Art::Point (0.0, 11.0));
 188                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 189
 190                 shift = 0;
 191                 label_offset = 11.0;
 192                 break;
 193
 194         case LoopEnd:
 195                 points = new ArdourCanvas::Points ();
 196                 points->push_back (Gnome::Art::Point (8.0,  0.0));
 197                 points->push_back (Gnome::Art::Point (8.0, 11.0));
 198                 points->push_back (Gnome::Art::Point (0.0, 11.0));
 199                 points->push_back (Gnome::Art::Point (0.0, 8.0));
 200                 points->push_back (Gnome::Art::Point (4.0, 8.0));
 201                 points->push_back (Gnome::Art::Point (4.0, 0.0));
 202                 points->push_back (Gnome::Art::Point (8.0, 0.0));
 203
 204                 shift = 8;
 205                 label_offset = 11.0;
 206                 break;
 207
 208         case  PunchIn:
 209                 points = new ArdourCanvas::Points ();
 210                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 211                 points->push_back (Gnome::Art::Point (8.0, 0.0));
 212                 points->push_back (Gnome::Art::Point (4.0, 4.0));
 213                 points->push_back (Gnome::Art::Point (4.0, 11.0));
 214                 points->push_back (Gnome::Art::Point (0.0, 11.0));
 215                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 216
 217                 shift = 0;
 218                 label_offset = 10.0;
 219                 break;
 220
 221         case  PunchOut:
 222                 points = new ArdourCanvas::Points ();
 223                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 224                 points->push_back (Gnome::Art::Point (8.0, 0.0));
 225                 points->push_back (Gnome::Art::Point (8.0, 11.0));
 226                 points->push_back (Gnome::Art::Point (4.0, 11.0));
 227                 points->push_back (Gnome::Art::Point (4.0, 4.0));
 228                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 229
 230                 shift = 8;
 231                 label_offset = 11.0;
 232                 break;
 233
 234         }
 235
 236         frame_position = frame;
 237         unit_position = editor.frame_to_unit (frame);
 238
 239         /* adjust to properly locate the tip */
 240
 241         unit_position -= shift;
 242
 243         group = &parent;
 244         group->set_property ("x", unit_position);
 245         group->set_property ("y", 1.0);
 246         // cerr << "set mark al points, nc = " << points->num_points << endl;
 247         mark = new Polygon (*group);
 248         mark->set_property ("points", points);
 249         mark->set_property ("fill_color_rgba", rgba);
 250         mark->set_property ("outline_color", Gdk::Color ("black"));
 251
 252         Pango::FontDescription font = get_font_for_style (N_("MarkerText"));
 253
 254         text = new Text (*group);
 255         text->set_property ("text", annotation.c_str());
 256         text->set_property ("x", label_offset);
 257         text->set_property ("y", 0.0);
 258         text->set_property ("fontdesc", font);
 259         text->set_property ("anchor", Gtk::ANCHOR_NW);
 260         text->set_property ("fill_color", Gdk::Color ("black"));
 261
 262         editor.ZoomChanged.connect (mem_fun (*this, &Marker::reposition));
 263
 264         mark->set_data ("marker", this);
 265
 266         if (handle_events) {
 267                 group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_marker_event), mark, this));
 268         }
 269
 270 }
 271
 272 Marker::~Marker ()
 273 {
 274         /* destroying the parent group destroys its contents, namely any polygons etc. that we added */
 275         delete text;
 276         delete mark;
 277         delete points;
 278 }
 279
 280 ArdourCanvas::Item&
 281 Marker::the_item() const
 282 {
 283         return *mark;
 284 }
 285
 286 void
 287 Marker::set_name (const string& name)
 288 {
 289         text->set_property ("text", name.c_str());
 290 }
 291
 292 void
 293 Marker::set_position (jack_nframes_t frame)
 294 {
 295         double new_unit_position = editor.frame_to_unit (frame);
 296         new_unit_position -= shift;
 297         group->move (new_unit_position - unit_position, 0.0);
 298         frame_position = frame;
 299         unit_position = new_unit_position;
 300 }
 301
 302 void
 303 Marker::reposition ()
 304 {
 305         set_position (frame_position);
 306 }
 307
 308 void
 309 Marker::show ()
 310 {
 311         group->show();
 312 }
 313
 314 void
 315 Marker::hide ()
 316 {
 317         group->hide();
 318 }
 319
 320 void
 321 Marker::set_color_rgba (uint32_t color)
 322 {
 323         mark->set_property ("fill_color_rgba", color);
 324 }
 325
 326 /***********************************************************************/
 327
 328 TempoMarker::TempoMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 329                           ARDOUR::TempoSection& temp)
 330         : Marker (editor, parent, rgba, text, Tempo, 0, false),
 331           _tempo (temp)
 332 {
 333         set_position (_tempo.frame());
 334         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_tempo_marker_event), mark, this));
 335 }
 336
 337 TempoMarker::~TempoMarker ()
 338 {
 339 }
 340
 341 /***********************************************************************/
 342
 343 MeterMarker::MeterMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 344                           ARDOUR::MeterSection& m)
 345         : Marker (editor, parent, rgba, text, Meter, 0, false),
 346           _meter (m)
 347 {
 348         set_position (_meter.frame());
 349         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_meter_marker_event), mark, this));
 350 }
 351
 352 MeterMarker::~MeterMarker ()
 353 {
 354 }
 355