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