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 */
  19
  20 #include <sigc++/bind.h>
  21 #include <ardour/tempo.h>
  22
  23 #include "marker.h"
  24 #include "public_editor.h"
  25 #include "utils.h"
  26 #include "canvas_impl.h"
  27 #include "ardour_ui.h"
  28
  29 #include "i18n.h"
  30
  31 Marker::Marker (PublicEditor& ed, ArdourCanvas::Group& parent, guint32 rgba, const string& annotation,
  32                 Type type, nframes_t frame, bool handle_events)
  33
  34         : editor (ed), _parent(&parent), _type(type)
  35 {
  36         double label_offset = 0;
  37         bool annotate_left = false;
  38
  39         /* Shapes we use:
  40
  41           Mark:
  42
  43            (0,0) -> (6,0)
  44              ^        |
  45              |        V
  46            (0,5)    (6,5)
  47                \    /
  48                (3,10)
  49
  50
  51            TempoMark:
  52            MeterMark:
  53
  54                (3,0)
  55               /      \
  56            (0,5) -> (6,5)
  57              ^        |
  58              |        V
  59            (0,10)<-(6,10)
  60
  61
  62            Start:
  63
  64            0,0\
  65             |  \
  66             |   \ 6,6
  67             |   /
  68             |  /
  69            0,12
  70
  71            End:
  72
  73                /12,0
  74               /     |
  75              /      |
  76            6,6      |
  77              \      |
  78               \     |
  79                \    |
  80                12,12
  81
  82
  83            TransportStart:
  84
  85              0,0
  86               | \
  87               |  \
  88               |   \
  89               |    \
  90               |     \
  91              0,13 --- 13,13
  92
  93            TransportEnd:
  94
  95                     /13,0
  96                    /   |
  97                   /    |
  98                  /     |
  99                 /      |
 100                /       |
 101              0,13 ------ 13,13
 102
 103
 104              PunchIn:
 105
 106              0,0 ------> 13,0
 107               |       /
 108               |      /
 109               |     /
 110               |    /
 111               |   /
 112               |  /
 113              0,13
 114
 115              PunchOut
 116
 117            0,0 -->-13,0
 118             \       |
 119              \      |
 120               \     |
 121                \    |
 122                 \   |
 123                  \  |
 124                  13,13
 125
 126
 127         */
 128
 129         switch (type) {
 130         case Mark:
 131                 points = new ArdourCanvas::Points ();
 132
 133                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 134                 points->push_back (Gnome::Art::Point (6.0, 0.0));
 135                 points->push_back (Gnome::Art::Point (6.0, 5.0));
 136                 points->push_back (Gnome::Art::Point (3.0, 10.0));
 137                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 138                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 139
 140                 shift = 3;
 141                 label_offset = 8.0;
 142                 break;
 143
 144         case Tempo:
 145         case Meter:
 146
 147                 points = new ArdourCanvas::Points ();
 148                 points->push_back (Gnome::Art::Point (3.0, 0.0));
 149                 points->push_back (Gnome::Art::Point (6.0, 5.0));
 150                 points->push_back (Gnome::Art::Point (6.0, 10.0));
 151                 points->push_back (Gnome::Art::Point (0.0, 10.0));
 152                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 153                 points->push_back (Gnome::Art::Point (3.0, 0.0));
 154
 155                 shift = 3;
 156                 label_offset = 8.0;
 157                 break;
 158
 159         case Start:
 160                 points = new ArdourCanvas::Points ();
 161                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 162                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 163                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 164                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 165
 166                 shift = 0;
 167                 label_offset = 13.0;
 168                 break;
 169
 170         case End:
 171                 points = new ArdourCanvas::Points ();
 172                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 173                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 174                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 175                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 176
 177                 shift = 13;
 178                 label_offset = 6.0;
 179                 annotate_left = true;
 180                 break;
 181
 182         case LoopStart:
 183                 points = new ArdourCanvas::Points ();
 184                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 185                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 186                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 187                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 188
 189                 shift = 0;
 190                 label_offset = 12.0;
 191                 break;
 192
 193         case LoopEnd:
 194                 points = new ArdourCanvas::Points ();
 195                 points->push_back (Gnome::Art::Point (13.0,  0.0));
 196                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 197                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 198                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 199
 200                 shift = 13;
 201                 label_offset = 0.0;
 202                 annotate_left = true;
 203                 break;
 204
 205         case  PunchIn:
 206                 points = new ArdourCanvas::Points ();
 207                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 208                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 209                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 210                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 211
 212                 shift = 0;
 213                 label_offset = 13.0;
 214                 break;
 215
 216         case  PunchOut:
 217                 points = new ArdourCanvas::Points ();
 218                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 219                 points->push_back (Gnome::Art::Point (12.0, 0.0));
 220                 points->push_back (Gnome::Art::Point (12.0, 12.0));
 221                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 222
 223                 shift = 13;
 224                 label_offset = 0.0;
 225                 annotate_left = true;
 226                 break;
 227
 228         }
 229
 230         frame_position = frame;
 231         unit_position = editor.frame_to_unit (frame);
 232
 233         /* adjust to properly locate the tip */
 234
 235         unit_position -= shift;
 236
 237         group = new Group (parent, unit_position, 1.0);
 238
 239         mark = new Polygon (*group);
 240         mark->property_points() = *points;
 241         mark->property_fill_color_rgba() = rgba;
 242         mark->property_outline_color_rgba() = rgba;
 243         mark->property_width_pixels() = 1;
 244         Pango::FontDescription* font = get_font_for_style (N_("MarkerText"));
 245
 246         text = new Text (*group);
 247         text->property_text() = annotation.c_str();
 248         text->property_font_desc() = *font;
 249
 250         delete font;
 251
 252         if (annotate_left) {
 253                 text->property_x() = -(text->property_text_width());
 254         } else {
 255                 text->property_x() = label_offset;
 256         }
 257         text->property_y() = 0.0;
 258         text->property_anchor() = Gtk::ANCHOR_NW;
 259         text->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerLabel.get();
 260
 261         editor.ZoomChanged.connect (mem_fun (*this, &Marker::reposition));
 262
 263         mark->set_data ("marker", this);
 264
 265         if (handle_events) {
 266                 group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_marker_event), mark, this));
 267         }
 268
 269         line = 0;
 270         line_points = 0;
 271
 272 }
 273
 274
 275 Marker::~Marker ()
 276 {
 277         drop_references ();
 278
 279         /* destroying the parent group destroys its contents, namely any polygons etc. that we added */
 280         delete text;
 281         delete mark;
 282         delete points;
 283
 284         if (line) {
 285                 delete line;
 286                 delete line_points;
 287         }
 288 }
 289
 290 void Marker::reparent(ArdourCanvas::Group & parent)
 291 {
 292         group->reparent(parent);
 293         _parent = &parent;
 294 }
 295
 296 void
 297 Marker::set_line_length (double len)
 298 {
 299         if (line) {
 300                 line_points->back().set_y (len);
 301                 line->property_points() = *line_points;
 302         }
 303 }
 304
 305 void
 306 Marker::add_line (ArdourCanvas::Group* group, double initial_height)
 307 {
 308         if (!line) {
 309
 310                 line_points = new ArdourCanvas::Points ();
 311                 line_points->push_back (Gnome::Art::Point (unit_position + shift, 0.0));
 312                 line_points->push_back (Gnome::Art::Point (unit_position + shift, initial_height));
 313
 314                 line = new ArdourCanvas::Line (*group);
 315                 line->property_width_pixels() = 1;
 316                 line->property_points() = *line_points;
 317                 line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_EditPoint.get();
 318 #if 0
 319                 line->property_first_arrowhead() = TRUE;
 320                 line->property_last_arrowhead() = TRUE;
 321                 line->property_arrow_shape_a() = 11.0;
 322                 line->property_arrow_shape_b() = 0.0;
 323                 line->property_arrow_shape_c() = 9.0;
 324 #endif
 325                 line->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_marker_event), mark, this));
 326         }
 327
 328         show_line ();
 329 }
 330
 331 void
 332 Marker::show_line ()
 333 {
 334         if (line) {
 335                 line->raise_to_top();
 336                 line->show ();
 337         }
 338 }
 339
 340 void
 341 Marker::hide_line ()
 342 {
 343         if (line) {
 344                 line->hide ();
 345         }
 346 }
 347
 348 ArdourCanvas::Item&
 349 Marker::the_item() const
 350 {
 351         return *mark;
 352 }
 353
 354 void
 355 Marker::set_name (const string& name)
 356 {
 357         text->property_text() = name.c_str();
 358         if (_type == End) {
 359           text->property_x() = -(text->property_text_width());
 360         }
 361 }
 362
 363 void
 364 Marker::set_position (nframes_t frame)
 365 {
 366         double new_unit_position = editor.frame_to_unit (frame);
 367         new_unit_position -= shift;
 368         group->move (new_unit_position - unit_position, 0.0);
 369         frame_position = frame;
 370         unit_position = new_unit_position;
 371
 372         if (line) {
 373                 (*line_points)[0].set_x (unit_position + shift);
 374                 (*line_points)[1].set_x (unit_position + shift);
 375                 line->property_points() = *line_points;
 376         }
 377 }
 378
 379 void
 380 Marker::reposition ()
 381 {
 382         set_position (frame_position);
 383 }
 384
 385 void
 386 Marker::show ()
 387 {
 388         group->show();
 389 }
 390
 391 void
 392 Marker::hide ()
 393 {
 394         group->hide();
 395 }
 396
 397 void
 398 Marker::set_color_rgba (uint32_t color)
 399 {
 400         mark->property_fill_color_rgba() = color;
 401         mark->property_outline_color_rgba() = color;
 402 }
 403
 404 /***********************************************************************/
 405
 406 TempoMarker::TempoMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 407                           ARDOUR::TempoSection& temp)
 408         : Marker (editor, parent, rgba, text, Tempo, 0, false),
 409           _tempo (temp)
 410 {
 411         set_position (_tempo.frame());
 412         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_tempo_marker_event), mark, this));
 413 }
 414
 415 TempoMarker::~TempoMarker ()
 416 {
 417 }
 418
 419 /***********************************************************************/
 420
 421 MeterMarker::MeterMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 422                           ARDOUR::MeterSection& m)
 423         : Marker (editor, parent, rgba, text, Meter, 0, false),
 424           _meter (m)
 425 {
 426         set_position (_meter.frame());
 427         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_meter_marker_event), mark, this));
 428 }
 429
 430 MeterMarker::~MeterMarker ()
 431 {
 432 }
 433