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 "ardour_ui.h"
  24 /*
  25  * ardour_ui.h include was moved to the top of the list
  26  * due to a conflicting definition of 'Rect' between
  27  * Apple's MacTypes.h and GTK.
  28  */
  29
  30 #include "marker.h"
  31 #include "public_editor.h"
  32 #include "utils.h"
  33 #include "canvas_impl.h"
  34 #include "simpleline.h"
  35
  36 #include <gtkmm2ext/utils.h>
  37
  38 #include "i18n.h"
  39
  40 using namespace std;
  41 using namespace ARDOUR;
  42
  43 Marker::Marker (PublicEditor& ed, ArdourCanvas::Group& parent, guint32 rgba, const string& annotation,
  44                 Type type, nframes_t frame, bool handle_events)
  45
  46         : editor (ed), _parent(&parent), _type(type)
  47 {
  48         double label_offset = 0;
  49
  50         /* Shapes we use:
  51
  52           Mark:
  53
  54            (0,0) -> (6,0)
  55              ^        |
  56              |        V
  57            (0,5)    (6,5)
  58                \    /
  59                (3,10)
  60
  61
  62            TempoMark:
  63            MeterMark:
  64
  65                (3,0)
  66               /      \
  67            (0,5) -> (6,5)
  68              ^        |
  69              |        V
  70            (0,10)<-(6,10)
  71
  72
  73            Start:
  74
  75            0,0\
  76             |  \
  77             |   \ 6,6
  78             |   /
  79             |  /
  80            0,12
  81
  82            End:
  83
  84                /12,0
  85               /     |
  86              /      |
  87            6,6      |
  88              \      |
  89               \     |
  90                \    |
  91                12,12
  92
  93
  94            TransportStart:
  95
  96              0,0
  97               | \
  98               |  \
  99               |   \
 100               |    \
 101               |     \
 102              0,13 --- 13,13
 103
 104            TransportEnd:
 105
 106                     /13,0
 107                    /   |
 108                   /    |
 109                  /     |
 110                 /      |
 111                /       |
 112              0,13 ------ 13,13
 113
 114
 115              PunchIn:
 116
 117              0,0 ------> 13,0
 118               |       /
 119               |      /
 120               |     /
 121               |    /
 122               |   /
 123               |  /
 124              0,13
 125
 126              PunchOut
 127
 128            0,0 -->-13,0
 129             \       |
 130              \      |
 131               \     |
 132                \    |
 133                 \   |
 134                  \  |
 135                  13,13
 136
 137
 138         */
 139
 140         switch (type) {
 141         case Mark:
 142                 points = new ArdourCanvas::Points ();
 143
 144                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 145                 points->push_back (Gnome::Art::Point (6.0, 0.0));
 146                 points->push_back (Gnome::Art::Point (6.0, 5.0));
 147                 points->push_back (Gnome::Art::Point (3.0, 10.0));
 148                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 149                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 150
 151                 shift = 3;
 152                 label_offset = 8.0;
 153                 break;
 154
 155         case Tempo:
 156         case Meter:
 157
 158                 points = new ArdourCanvas::Points ();
 159                 points->push_back (Gnome::Art::Point (3.0, 0.0));
 160                 points->push_back (Gnome::Art::Point (6.0, 5.0));
 161                 points->push_back (Gnome::Art::Point (6.0, 10.0));
 162                 points->push_back (Gnome::Art::Point (0.0, 10.0));
 163                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 164                 points->push_back (Gnome::Art::Point (3.0, 0.0));
 165
 166                 shift = 3;
 167                 label_offset = 8.0;
 168                 break;
 169
 170         case Start:
 171                 points = new ArdourCanvas::Points ();
 172                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 173                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 174                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 175                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 176
 177                 shift = 0;
 178                 label_offset = 13.0;
 179                 break;
 180
 181         case End:
 182                 points = new ArdourCanvas::Points ();
 183                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 184                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 185                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 186                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 187
 188                 shift = 13;
 189                 label_offset = 6.0;
 190                 break;
 191
 192         case LoopStart:
 193                 points = new ArdourCanvas::Points ();
 194                 points->push_back (Gnome::Art::Point (0.0, 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 (0.0, 0.0));
 198
 199                 shift = 0;
 200                 label_offset = 12.0;
 201                 break;
 202
 203         case LoopEnd:
 204                 points = new ArdourCanvas::Points ();
 205                 points->push_back (Gnome::Art::Point (13.0,  0.0));
 206                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 207                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 208                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 209
 210                 shift = 13;
 211                 label_offset = 0.0;
 212                 break;
 213
 214         case  PunchIn:
 215                 points = new ArdourCanvas::Points ();
 216                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 217                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 218                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 219                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 220
 221                 shift = 0;
 222                 label_offset = 13.0;
 223                 break;
 224
 225         case  PunchOut:
 226                 points = new ArdourCanvas::Points ();
 227                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 228                 points->push_back (Gnome::Art::Point (12.0, 0.0));
 229                 points->push_back (Gnome::Art::Point (12.0, 12.0));
 230                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 231
 232                 shift = 13;
 233                 label_offset = 0.0;
 234                 break;
 235
 236         }
 237
 238         frame_position = frame;
 239         unit_position = editor.frame_to_unit (frame);
 240
 241         /* adjust to properly locate the tip */
 242
 243         unit_position -= shift;
 244
 245         group = new Group (parent, unit_position, 1.0);
 246
 247         mark = new Polygon (*group);
 248         mark->property_points() = *points;
 249         mark->property_fill_color_rgba() = rgba;
 250         mark->property_outline_color_rgba() = rgba;
 251         mark->property_width_pixels() = 1;
 252
 253         /* setup name pixbuf sizes */
 254         name_font = get_font_for_style (N_("MarkerText"));
 255
 256         Gtk::Window win;
 257         Gtk::Label foo;
 258         win.add (foo);
 259
 260         Glib::RefPtr<Pango::Layout> layout = foo.create_pango_layout (X_("Hg")); /* ascender + descender */
 261         int width;
 262         int height;
 263
 264         layout->set_font_description (*name_font);
 265         Gtkmm2ext::get_ink_pixel_size (layout, width, height);
 266         name_height = height + 6;
 267
 268         name_pixbuf = new ArdourCanvas::Pixbuf(*group);
 269         name_pixbuf->property_x() = label_offset;
 270
 271         set_name (annotation.c_str());
 272
 273         editor.ZoomChanged.connect (mem_fun (*this, &Marker::reposition));
 274
 275         mark->set_data ("marker", this);
 276
 277         if (handle_events) {
 278                 group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_marker_event), mark, this));
 279         }
 280
 281         line = 0;
 282
 283 }
 284
 285
 286 Marker::~Marker ()
 287 {
 288         drop_references ();
 289
 290         /* destroying the parent group destroys its contents, namely any polygons etc. that we added */
 291         delete name_pixbuf;
 292         delete mark;
 293         delete points;
 294
 295         delete line;
 296         line = 0;
 297 }
 298
 299 void Marker::reparent(ArdourCanvas::Group & parent)
 300 {
 301         group->reparent(parent);
 302         _parent = &parent;
 303 }
 304
 305
 306 void
 307 Marker::set_line_vpos (double pos, double height)
 308 {
 309         if (line) {
 310                 line->property_y1() = pos;
 311                 line->property_y2() = pos + height;
 312         }
 313 }
 314
 315 void
 316 Marker::add_line (ArdourCanvas::Group* group, double y_origin, double initial_height)
 317 {
 318         if (!line) {
 319
 320                 line = new ArdourCanvas::SimpleLine (*group);
 321                 line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_EditPoint.get();
 322                 line->property_x1() = unit_position + shift;
 323                 line->property_y1() = y_origin;
 324                 line->property_x2() = unit_position + shift;
 325                 line->property_y2() = y_origin + initial_height;
 326
 327                 line->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_marker_event), mark, this));
 328         }
 329
 330         show_line ();
 331 }
 332
 333 void
 334 Marker::show_line ()
 335 {
 336         if (line) {
 337                 line->raise_to_top();
 338                 line->show ();
 339         }
 340 }
 341
 342 void
 343 Marker::hide_line ()
 344 {
 345         if (line) {
 346                 line->hide ();
 347         }
 348 }
 349
 350 ArdourCanvas::Item&
 351 Marker::the_item() const
 352 {
 353         return *mark;
 354 }
 355
 356 void
 357 Marker::set_name (const string& new_name)
 358 {
 359         uint32_t pb_width;
 360         double font_size;
 361
 362         font_size = name_font->get_size() / Pango::SCALE;
 363         pb_width = new_name.length() * font_size;
 364
 365         Glib::RefPtr<Gdk::Pixbuf> buf = Gdk::Pixbuf::create(Gdk::COLORSPACE_RGB, true, 8, pb_width, name_height);
 366
 367         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, pb_width, name_height);
 368         cairo_t *cr = cairo_create (surface);
 369         cairo_text_extents_t te;
 370         cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
 371         cairo_select_font_face (cr, name_font->get_family().c_str(),
 372                                 CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
 373         cairo_set_font_size (cr, font_size);
 374         cairo_text_extents (cr, new_name.c_str(), &te);
 375
 376         cairo_move_to (cr, 0.5,
 377                        0.5 - te.height / 2 - te.y_bearing + name_height / 2);
 378         cairo_show_text (cr, new_name.c_str());
 379
 380         unsigned char* src = cairo_image_surface_get_data (surface);
 381         convert_bgra_to_rgba(src, buf->get_pixels(), pb_width, name_height);
 382
 383         cairo_destroy(cr);
 384         name_pixbuf->property_pixbuf() = buf;
 385
 386         if (_type == End || _type == LoopEnd || _type == PunchOut) {
 387                 name_pixbuf->property_x() = -(te.width);
 388         }
 389
 390 }
 391
 392 void
 393 Marker::set_position (nframes64_t frame)
 394 {
 395         double new_unit_position = editor.frame_to_unit (frame);
 396         new_unit_position -= shift;
 397         group->move (new_unit_position - unit_position, 0.0);
 398         frame_position = frame;
 399         unit_position = new_unit_position;
 400
 401         if (line) {
 402                 line->property_x1() = unit_position + shift;
 403                 line->property_x2() = unit_position + shift;
 404         }
 405 }
 406
 407 void
 408 Marker::reposition ()
 409 {
 410         set_position (frame_position);
 411 }
 412
 413 void
 414 Marker::show ()
 415 {
 416         group->show();
 417 }
 418
 419 void
 420 Marker::hide ()
 421 {
 422         group->hide();
 423 }
 424
 425 void
 426 Marker::set_color_rgba (uint32_t color)
 427 {
 428         mark->property_fill_color_rgba() = color;
 429         mark->property_outline_color_rgba() = color;
 430 }
 431
 432 /***********************************************************************/
 433
 434 TempoMarker::TempoMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 435                           ARDOUR::TempoSection& temp)
 436         : Marker (editor, parent, rgba, text, Tempo, 0, false),
 437           _tempo (temp)
 438 {
 439         set_position (_tempo.frame());
 440         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_tempo_marker_event), mark, this));
 441 }
 442
 443 TempoMarker::~TempoMarker ()
 444 {
 445 }
 446
 447 /***********************************************************************/
 448
 449 MeterMarker::MeterMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 450                           ARDOUR::MeterSection& m)
 451         : Marker (editor, parent, rgba, text, Meter, 0, false),
 452           _meter (m)
 453 {
 454         set_position (_meter.frame());
 455         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_meter_marker_event), mark, this));
 456 }
 457
 458 MeterMarker::~MeterMarker ()
 459 {
 460 }
 461