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 "color.h"
  28
  29 #include "i18n.h"
  30
  31 using namespace ARDOUR;
  32
  33 Marker::Marker (PublicEditor& ed, ArdourCanvas::Group& parent, guint32 rgba, const string& annotation,
  34                 Type type, nframes_t frame, bool handle_events)
  35
  36         : editor (ed), _type(type)
  37 {
  38         double label_offset = 0;
  39         bool annotate_left = false;
  40
  41         /* Shapes we use:
  42
  43           Mark:
  44
  45            (0,0) -> (6,0)
  46              ^        |
  47              |        V
  48            (0,5)    (6,5)
  49                \    /
  50                (3,10)
  51
  52
  53            TempoMark:
  54            MeterMark:
  55
  56                (3,0)
  57               /      \
  58            (0,5) -> (6,5)
  59              ^        |
  60              |        V
  61            (0,10)<-(6,10)
  62
  63
  64            Start:
  65
  66            0,0\
  67             |  \
  68             |   \ 6,6
  69             |   /
  70             |  /
  71            0,12
  72
  73            End:
  74
  75                /12,0
  76               /     |
  77              /      |
  78            6,6      |
  79              \      |
  80               \     |
  81                \    |
  82                12,12
  83
  84
  85            TransportStart:
  86
  87              0,0
  88               | \
  89               |  \
  90               |   \
  91               |    \
  92               |     \
  93              0,13 --- 13,13
  94
  95            TransportEnd:
  96
  97                     /13,0
  98                    /   |
  99                   /    |
 100                  /     |
 101                 /      |
 102                /       |
 103              0,13 ------ 13,13
 104
 105
 106              PunchIn:
 107
 108              0,0 ------> 13,0
 109               |       /
 110               |      /
 111               |     /
 112               |    /
 113               |   /
 114               |  /
 115              0,13
 116
 117              PunchOut
 118
 119            0,0 -->-13,0
 120             \       |
 121              \      |
 122               \     |
 123                \    |
 124                 \   |
 125                  \  |
 126                  13,13
 127
 128
 129         */
 130
 131         switch (type) {
 132         case Mark:
 133                 points = new ArdourCanvas::Points ();
 134
 135                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 136                 points->push_back (Gnome::Art::Point (6.0, 0.0));
 137                 points->push_back (Gnome::Art::Point (6.0, 5.0));
 138                 points->push_back (Gnome::Art::Point (3.0, 10.0));
 139                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 140                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 141
 142                 shift = 3;
 143                 label_offset = 8.0;
 144                 break;
 145
 146         case Tempo:
 147         case Meter:
 148
 149                 points = new ArdourCanvas::Points ();
 150                 points->push_back (Gnome::Art::Point (3.0, 0.0));
 151                 points->push_back (Gnome::Art::Point (6.0, 5.0));
 152                 points->push_back (Gnome::Art::Point (6.0, 10.0));
 153                 points->push_back (Gnome::Art::Point (0.0, 10.0));
 154                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 155                 points->push_back (Gnome::Art::Point (3.0, 0.0));
 156
 157                 shift = 3;
 158                 label_offset = 8.0;
 159                 break;
 160
 161         case Start:
 162                 points = new ArdourCanvas::Points ();
 163                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 164                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 165                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 166                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 167
 168                 shift = 0;
 169                 label_offset = 13.0;
 170                 break;
 171
 172         case End:
 173                 points = new ArdourCanvas::Points ();
 174                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 175                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 176                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 177                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 178
 179                 shift = 13;
 180                 label_offset = 6.0;
 181                 annotate_left = true;
 182                 break;
 183
 184         case LoopStart:
 185                 points = new ArdourCanvas::Points ();
 186                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 187                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 188                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 189                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 190
 191                 shift = 0;
 192                 label_offset = 12.0;
 193                 break;
 194
 195         case LoopEnd:
 196                 points = new ArdourCanvas::Points ();
 197                 points->push_back (Gnome::Art::Point (13.0,  0.0));
 198                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 199                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 200                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 201
 202                 shift = 13;
 203                 label_offset = 0.0;
 204                 annotate_left = true;
 205                 break;
 206
 207         case  PunchIn:
 208                 points = new ArdourCanvas::Points ();
 209                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 210                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 211                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 212                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 213
 214                 shift = 0;
 215                 label_offset = 13.0;
 216                 break;
 217
 218         case  PunchOut:
 219                 points = new ArdourCanvas::Points ();
 220                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 221                 points->push_back (Gnome::Art::Point (12.0, 0.0));
 222                 points->push_back (Gnome::Art::Point (12.0, 12.0));
 223                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 224
 225                 shift = 13;
 226                 label_offset = 0.0;
 227                 annotate_left = true;
 228                 break;
 229
 230         }
 231
 232         frame_position = frame;
 233         unit_position = editor.frame_to_unit (frame);
 234
 235         /* adjust to properly locate the tip */
 236
 237         unit_position -= shift;
 238
 239         group = new Group (parent, unit_position, 1.0);
 240
 241         mark = new Polygon (*group);
 242         mark->property_points() = *points;
 243         mark->property_fill_color_rgba() = rgba;
 244         mark->property_outline_color_rgba() = rgba;
 245         mark->property_width_pixels() = 1;
 246         Pango::FontDescription font = get_font_for_style (N_("MarkerText"));
 247
 248         text = new Text (*group);
 249         text->property_text() = annotation.c_str();
 250         text->property_font_desc() = font;
 251         if (annotate_left) {
 252           text->property_x() = -(text->property_text_width());
 253         } else {
 254           text->property_x() = label_offset;
 255         }
 256         text->property_y() = 0.0;
 257         text->property_anchor() = Gtk::ANCHOR_NW;
 258         text->property_fill_color_rgba() = Config->canvasvar_MarkerLabel.get();
 259
 260         editor.ZoomChanged.connect (mem_fun (*this, &Marker::reposition));
 261
 262         mark->set_data ("marker", this);
 263
 264         if (handle_events) {
 265                 group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_marker_event), mark, this));
 266         }
 267
 268 }
 269
 270 Marker::~Marker ()
 271 {
 272         /* destroying the parent group destroys its contents, namely any polygons etc. that we added */
 273         delete text;
 274         delete mark;
 275         delete points;
 276 }
 277
 278 ArdourCanvas::Item&
 279 Marker::the_item() const
 280 {
 281         return *mark;
 282 }
 283
 284 void
 285 Marker::set_name (const string& name)
 286 {
 287         text->property_text() = name.c_str();
 288         if (_type == End) {
 289           text->property_x() = -(text->property_text_width());
 290         }
 291 }
 292
 293 void
 294 Marker::set_position (nframes_t frame)
 295 {
 296         double new_unit_position = editor.frame_to_unit (frame);
 297         new_unit_position -= shift;
 298         group->move (new_unit_position - unit_position, 0.0);
 299         frame_position = frame;
 300         unit_position = new_unit_position;
 301 }
 302
 303 void
 304 Marker::reposition ()
 305 {
 306         set_position (frame_position);
 307 }
 308
 309 void
 310 Marker::show ()
 311 {
 312         group->show();
 313 }
 314
 315 void
 316 Marker::hide ()
 317 {
 318         group->hide();
 319 }
 320
 321 void
 322 Marker::set_color_rgba (uint32_t color)
 323 {
 324         mark->property_fill_color_rgba() = color;
 325 }
 326
 327 /***********************************************************************/
 328
 329 TempoMarker::TempoMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 330                           ARDOUR::TempoSection& temp)
 331         : Marker (editor, parent, rgba, text, Tempo, 0, false),
 332           _tempo (temp)
 333 {
 334         set_position (_tempo.frame());
 335         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_tempo_marker_event), mark, this));
 336 }
 337
 338 TempoMarker::~TempoMarker ()
 339 {
 340 }
 341
 342 /***********************************************************************/
 343
 344 MeterMarker::MeterMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 345                           ARDOUR::MeterSection& m)
 346         : Marker (editor, parent, rgba, text, Meter, 0, false),
 347           _meter (m)
 348 {
 349         set_position (_meter.frame());
 350         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_meter_marker_event), mark, this));
 351 }
 352
 353 MeterMarker::~MeterMarker ()
 354 {
 355 }
 356