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 <gtkmm2ext/utils.h>
  31
  32 #include "i18n.h"
  33
  34 Marker::Marker (PublicEditor& ed, ArdourCanvas::Group& parent, guint32 rgba, const string& annotation,
  35                 Type type, nframes_t frame, bool handle_events)
  36
  37         : editor (ed), _parent(&parent), _type(type)
  38 {
  39         double label_offset = 0;
  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                 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                 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                 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
 244         /* setup name pixbuf sizes */
 245         name_font = get_font_for_style (N_("MarkerText"));
 246
 247         Gtk::Label foo;
 248         Glib::RefPtr<Pango::Layout> layout = foo.create_pango_layout (X_("Hg")); /* ascender + descender */
 249         int width;
 250
 251         layout->set_font_description (*name_font);
 252         Gtkmm2ext::get_ink_pixel_size (layout, width, name_height);
 253
 254         name_pixbuf = new ArdourCanvas::Pixbuf(*group);
 255         name_pixbuf->property_x() = label_offset;
 256         name_pixbuf->property_y() = (13 / 2) - (name_height / 2);
 257
 258         set_name (annotation.c_str());
 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         line = 0;
 269
 270 }
 271
 272
 273 Marker::~Marker ()
 274 {
 275         drop_references ();
 276
 277         /* destroying the parent group destroys its contents, namely any polygons etc. that we added */
 278         delete name_pixbuf;
 279         delete mark;
 280         delete points;
 281
 282         if (line) {
 283                 delete line;
 284                 line = 0;
 285         }
 286 }
 287
 288 void Marker::reparent(ArdourCanvas::Group & parent)
 289 {
 290         group->reparent(parent);
 291         _parent = &parent;
 292 }
 293
 294
 295 void
 296 Marker::set_line_vpos (double pos, double height)
 297 {
 298         if (line) {
 299                 line->property_y1() = pos;
 300                 line->property_y2() = pos + height;
 301         }
 302 }
 303
 304 void
 305 Marker::add_line (ArdourCanvas::Group* group, double y_origin, double initial_height)
 306 {
 307         if (!line) {
 308
 309                 line = new ArdourCanvas::SimpleLine (*group);
 310                 line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_EditPoint.get();
 311                 line->property_x1() = unit_position + shift;
 312                 line->property_y1() = y_origin;
 313                 line->property_x2() = unit_position + shift;
 314                 line->property_y2() = y_origin + initial_height;
 315
 316                 line->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_marker_event), mark, this));
 317         }
 318
 319         show_line ();
 320 }
 321
 322 void
 323 Marker::show_line ()
 324 {
 325         if (line) {
 326                 line->raise_to_top();
 327                 line->show ();
 328         }
 329 }
 330
 331 void
 332 Marker::hide_line ()
 333 {
 334         if (line) {
 335                 line->hide ();
 336         }
 337 }
 338
 339 ArdourCanvas::Item&
 340 Marker::the_item() const
 341 {
 342         return *mark;
 343 }
 344
 345 void
 346 Marker::set_name (const string& new_name)
 347 {
 348         int name_width = pixel_width (new_name, *name_font) + 2;
 349
 350         name_pixbuf->property_pixbuf() = pixbuf_from_ustring(new_name, name_font, name_width, name_height);
 351
 352         if (_type == End || _type == LoopEnd || _type == PunchOut) {
 353                 name_pixbuf->property_x() = - (name_width);
 354         }
 355 }
 356
 357 void
 358 Marker::set_position (nframes_t frame)
 359 {
 360         double new_unit_position = editor.frame_to_unit (frame);
 361         new_unit_position -= shift;
 362         group->move (new_unit_position - unit_position, 0.0);
 363         frame_position = frame;
 364         unit_position = new_unit_position;
 365
 366         if (line) {
 367                 line->property_x1() = unit_position + shift;
 368                 line->property_x2() = unit_position + shift;
 369         }
 370 }
 371
 372 void
 373 Marker::reposition ()
 374 {
 375         set_position (frame_position);
 376 }
 377
 378 void
 379 Marker::show ()
 380 {
 381         group->show();
 382 }
 383
 384 void
 385 Marker::hide ()
 386 {
 387         group->hide();
 388 }
 389
 390 void
 391 Marker::set_color_rgba (uint32_t color)
 392 {
 393         mark->property_fill_color_rgba() = color;
 394         mark->property_outline_color_rgba() = color;
 395 }
 396
 397 /***********************************************************************/
 398
 399 TempoMarker::TempoMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 400                           ARDOUR::TempoSection& temp)
 401         : Marker (editor, parent, rgba, text, Tempo, 0, false),
 402           _tempo (temp)
 403 {
 404         set_position (_tempo.frame());
 405         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_tempo_marker_event), mark, this));
 406 }
 407
 408 TempoMarker::~TempoMarker ()
 409 {
 410 }
 411
 412 /***********************************************************************/
 413
 414 MeterMarker::MeterMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 415                           ARDOUR::MeterSection& m)
 416         : Marker (editor, parent, rgba, text, Meter, 0, false),
 417           _meter (m)
 418 {
 419         set_position (_meter.frame());
 420         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_meter_marker_event), mark, this));
 421 }
 422
 423 MeterMarker::~MeterMarker ()
 424 {
 425 }
 426