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, nframes_t frame, bool handle_events)
  33
  34         : editor (ed), _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         if (annotate_left) {
 250           text->property_x() = -(text->property_text_width());
 251         } else {
 252           text->property_x() = label_offset;
 253         }
 254         text->property_y() = 0.0;
 255         text->property_anchor() = Gtk::ANCHOR_NW;
 256         text->property_fill_color() = "black";
 257
 258         editor.ZoomChanged.connect (mem_fun (*this, &Marker::reposition));
 259
 260         mark->set_data ("marker", this);
 261
 262         if (handle_events) {
 263                 group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_marker_event), mark, this));
 264         }
 265
 266 }
 267
 268 Marker::~Marker ()
 269 {
 270         /* destroying the parent group destroys its contents, namely any polygons etc. that we added */
 271         delete text;
 272         delete mark;
 273         delete points;
 274 }
 275
 276 ArdourCanvas::Item&
 277 Marker::the_item() const
 278 {
 279         return *mark;
 280 }
 281
 282 void
 283 Marker::set_name (const string& name)
 284 {
 285         text->property_text() = name.c_str();
 286         if (_type == End) {
 287           text->property_x() = -(text->property_text_width());
 288         }
 289 }
 290
 291 void
 292 Marker::set_position (nframes_t frame)
 293 {
 294         double new_unit_position = editor.frame_to_unit (frame);
 295         new_unit_position -= shift;
 296         group->move (new_unit_position - unit_position, 0.0);
 297         frame_position = frame;
 298         unit_position = new_unit_position;
 299 }
 300
 301 void
 302 Marker::reposition ()
 303 {
 304         set_position (frame_position);
 305 }
 306
 307 void
 308 Marker::show ()
 309 {
 310         group->show();
 311 }
 312
 313 void
 314 Marker::hide ()
 315 {
 316         group->hide();
 317 }
 318
 319 void
 320 Marker::set_color_rgba (uint32_t color)
 321 {
 322         mark->property_fill_color_rgba() = color;
 323 }
 324
 325 /***********************************************************************/
 326
 327 TempoMarker::TempoMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 328                           ARDOUR::TempoSection& temp)
 329         : Marker (editor, parent, rgba, text, Tempo, 0, false),
 330           _tempo (temp)
 331 {
 332         set_position (_tempo.frame());
 333         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_tempo_marker_event), mark, this));
 334 }
 335
 336 TempoMarker::~TempoMarker ()
 337 {
 338 }
 339
 340 /***********************************************************************/
 341
 342 MeterMarker::MeterMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 343                           ARDOUR::MeterSection& m)
 344         : Marker (editor, parent, rgba, text, Meter, 0, false),
 345           _meter (m)
 346 {
 347         set_position (_meter.frame());
 348         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_meter_marker_event), mark, this));
 349 }
 350
 351 MeterMarker::~MeterMarker ()
 352 {
 353 }
 354