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 #include "simpleline.h"
  29
  30 #include "i18n.h"
  31
  32 Marker::Marker (PublicEditor& ed, ArdourCanvas::Group& parent, guint32 rgba, const string& annotation,
  33                 Type type, nframes_t frame, bool handle_events)
  34
  35         : editor (ed), _parent(&parent), _type(type)
  36 {
  37         double label_offset = 0;
  38         bool annotate_left = false;
  39
  40         /* Shapes we use:
  41
  42           Mark:
  43
  44            (0,0) -> (6,0)
  45              ^        |
  46              |        V
  47            (0,5)    (6,5)
  48                \    /
  49                (3,10)
  50
  51
  52            TempoMark:
  53            MeterMark:
  54
  55                (3,0)
  56               /      \
  57            (0,5) -> (6,5)
  58              ^        |
  59              |        V
  60            (0,10)<-(6,10)
  61
  62
  63            Start:
  64
  65            0,0\
  66             |  \
  67             |   \ 6,6
  68             |   /
  69             |  /
  70            0,12
  71
  72            End:
  73
  74                /12,0
  75               /     |
  76              /      |
  77            6,6      |
  78              \      |
  79               \     |
  80                \    |
  81                12,12
  82
  83
  84            TransportStart:
  85
  86              0,0
  87               | \
  88               |  \
  89               |   \
  90               |    \
  91               |     \
  92              0,13 --- 13,13
  93
  94            TransportEnd:
  95
  96                     /13,0
  97                    /   |
  98                   /    |
  99                  /     |
 100                 /      |
 101                /       |
 102              0,13 ------ 13,13
 103
 104
 105              PunchIn:
 106
 107              0,0 ------> 13,0
 108               |       /
 109               |      /
 110               |     /
 111               |    /
 112               |   /
 113               |  /
 114              0,13
 115
 116              PunchOut
 117
 118            0,0 -->-13,0
 119             \       |
 120              \      |
 121               \     |
 122                \    |
 123                 \   |
 124                  \  |
 125                  13,13
 126
 127
 128         */
 129
 130         switch (type) {
 131         case Mark:
 132                 points = new ArdourCanvas::Points ();
 133
 134                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 135                 points->push_back (Gnome::Art::Point (6.0, 0.0));
 136                 points->push_back (Gnome::Art::Point (6.0, 5.0));
 137                 points->push_back (Gnome::Art::Point (3.0, 10.0));
 138                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 139                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 140
 141                 shift = 3;
 142                 label_offset = 8.0;
 143                 break;
 144
 145         case Tempo:
 146         case Meter:
 147
 148                 points = new ArdourCanvas::Points ();
 149                 points->push_back (Gnome::Art::Point (3.0, 0.0));
 150                 points->push_back (Gnome::Art::Point (6.0, 5.0));
 151                 points->push_back (Gnome::Art::Point (6.0, 10.0));
 152                 points->push_back (Gnome::Art::Point (0.0, 10.0));
 153                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 154                 points->push_back (Gnome::Art::Point (3.0, 0.0));
 155
 156                 shift = 3;
 157                 label_offset = 8.0;
 158                 break;
 159
 160         case Start:
 161                 points = new ArdourCanvas::Points ();
 162                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 163                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 164                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 165                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 166
 167                 shift = 0;
 168                 label_offset = 13.0;
 169                 break;
 170
 171         case End:
 172                 points = new ArdourCanvas::Points ();
 173                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 174                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 175                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 176                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 177
 178                 shift = 13;
 179                 label_offset = 6.0;
 180                 annotate_left = true;
 181                 break;
 182
 183         case LoopStart:
 184                 points = new ArdourCanvas::Points ();
 185                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 186                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 187                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 188                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 189
 190                 shift = 0;
 191                 label_offset = 12.0;
 192                 break;
 193
 194         case LoopEnd:
 195                 points = new ArdourCanvas::Points ();
 196                 points->push_back (Gnome::Art::Point (13.0,  0.0));
 197                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 198                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 199                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 200
 201                 shift = 13;
 202                 label_offset = 0.0;
 203                 annotate_left = true;
 204                 break;
 205
 206         case  PunchIn:
 207                 points = new ArdourCanvas::Points ();
 208                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 209                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 210                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 211                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 212
 213                 shift = 0;
 214                 label_offset = 13.0;
 215                 break;
 216
 217         case  PunchOut:
 218                 points = new ArdourCanvas::Points ();
 219                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 220                 points->push_back (Gnome::Art::Point (12.0, 0.0));
 221                 points->push_back (Gnome::Art::Point (12.0, 12.0));
 222                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 223
 224                 shift = 13;
 225                 label_offset = 0.0;
 226                 annotate_left = true;
 227                 break;
 228
 229         }
 230
 231         frame_position = frame;
 232         unit_position = editor.frame_to_unit (frame);
 233
 234         /* adjust to properly locate the tip */
 235
 236         unit_position -= shift;
 237
 238         group = new Group (parent, unit_position, 1.0);
 239
 240         mark = new Polygon (*group);
 241         mark->property_points() = *points;
 242         mark->property_fill_color_rgba() = rgba;
 243         mark->property_outline_color_rgba() = rgba;
 244         mark->property_width_pixels() = 1;
 245         Pango::FontDescription* font = get_font_for_style (N_("MarkerText"));
 246         //cerr << " font->get_size() = " << font->get_size() << " is_absolute = " << pango_font_description_get_size_is_absolute(font->gobj()) << " to_string = " << font->to_string() << endl;
 247         text = new Text (*group);
 248         text->property_font_desc() = *font;
 249         text->property_text() = annotation.c_str();
 250
 251         delete font;
 252
 253         if (annotate_left) {
 254                 text->property_x() = -(text->property_text_width());
 255         } else {
 256                 text->property_x() = label_offset;
 257         }
 258         text->property_y() = 0.0;
 259         text->property_anchor() = Gtk::ANCHOR_NW;
 260         text->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerLabel.get();
 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         line = 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                 line = 0;
 287         }
 288 }
 289
 290 void Marker::reparent(ArdourCanvas::Group & parent)
 291 {
 292         group->reparent(parent);
 293         _parent = &parent;
 294 }
 295
 296
 297 void
 298 Marker::set_line_vpos (double pos, double height)
 299 {
 300         if (line) {
 301                 line->property_y1() = pos;
 302                 line->property_y2() = pos + height;
 303         }
 304 }
 305
 306 void
 307 Marker::add_line (ArdourCanvas::Group* group, double y_origin, double initial_height)
 308 {
 309         if (!line) {
 310
 311                 line = new ArdourCanvas::SimpleLine (*group);
 312                 line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_EditPoint.get();
 313                 line->property_x1() = unit_position + shift;
 314                 line->property_y1() = y_origin;
 315                 line->property_x2() = unit_position + shift;
 316                 line->property_y2() = y_origin + initial_height;
 317
 318                 line->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_marker_event), mark, this));
 319         }
 320
 321         show_line ();
 322 }
 323
 324 void
 325 Marker::show_line ()
 326 {
 327         if (line) {
 328                 line->raise_to_top();
 329                 line->show ();
 330         }
 331 }
 332
 333 void
 334 Marker::hide_line ()
 335 {
 336         if (line) {
 337                 line->hide ();
 338         }
 339 }
 340
 341 ArdourCanvas::Item&
 342 Marker::the_item() const
 343 {
 344         return *mark;
 345 }
 346
 347 void
 348 Marker::set_name (const string& name)
 349 {
 350         text->property_text() = name.c_str();
 351         if (_type == End) {
 352           text->property_x() = -(text->property_text_width());
 353         }
 354 }
 355
 356 void
 357 Marker::set_position (nframes_t frame)
 358 {
 359         double new_unit_position = editor.frame_to_unit (frame);
 360         new_unit_position -= shift;
 361         group->move (new_unit_position - unit_position, 0.0);
 362         frame_position = frame;
 363         unit_position = new_unit_position;
 364
 365         if (line) {
 366                 line->property_x1() = unit_position + shift;
 367                 line->property_x2() = unit_position + shift;
 368         }
 369 }
 370
 371 void
 372 Marker::reposition ()
 373 {
 374         set_position (frame_position);
 375 }
 376
 377 void
 378 Marker::show ()
 379 {
 380         group->show();
 381 }
 382
 383 void
 384 Marker::hide ()
 385 {
 386         group->hide();
 387 }
 388
 389 void
 390 Marker::set_color_rgba (uint32_t color)
 391 {
 392         mark->property_fill_color_rgba() = color;
 393         mark->property_outline_color_rgba() = color;
 394 }
 395
 396 /***********************************************************************/
 397
 398 TempoMarker::TempoMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 399                           ARDOUR::TempoSection& temp)
 400         : Marker (editor, parent, rgba, text, Tempo, 0, false),
 401           _tempo (temp)
 402 {
 403         set_position (_tempo.frame());
 404         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_tempo_marker_event), mark, this));
 405 }
 406
 407 TempoMarker::~TempoMarker ()
 408 {
 409 }
 410
 411 /***********************************************************************/
 412
 413 MeterMarker::MeterMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 414                           ARDOUR::MeterSection& m)
 415         : Marker (editor, parent, rgba, text, Meter, 0, false),
 416           _meter (m)
 417 {
 418         set_position (_meter.frame());
 419         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_meter_marker_event), mark, this));
 420 }
 421
 422 MeterMarker::~MeterMarker ()
 423 {
 424 }
 425