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 using namespace std;
  35 using namespace ARDOUR;
  36
  37 Marker::Marker (PublicEditor& ed, ArdourCanvas::Group& parent, guint32 rgba, const string& annotation,
  38                 Type type, nframes_t frame, bool handle_events)
  39
  40         : editor (ed), _parent(&parent), _type(type)
  41 {
  42         double label_offset = 0;
  43
  44         /* Shapes we use:
  45
  46           Mark:
  47
  48            (0,0) -> (6,0)
  49              ^        |
  50              |        V
  51            (0,5)    (6,5)
  52                \    /
  53                (3,10)
  54
  55
  56            TempoMark:
  57            MeterMark:
  58
  59                (3,0)
  60               /      \
  61            (0,5) -> (6,5)
  62              ^        |
  63              |        V
  64            (0,10)<-(6,10)
  65
  66
  67            Start:
  68
  69            0,0\
  70             |  \
  71             |   \ 6,6
  72             |   /
  73             |  /
  74            0,12
  75
  76            End:
  77
  78                /12,0
  79               /     |
  80              /      |
  81            6,6      |
  82              \      |
  83               \     |
  84                \    |
  85                12,12
  86
  87
  88            TransportStart:
  89
  90              0,0
  91               | \
  92               |  \
  93               |   \
  94               |    \
  95               |     \
  96              0,13 --- 13,13
  97
  98            TransportEnd:
  99
 100                     /13,0
 101                    /   |
 102                   /    |
 103                  /     |
 104                 /      |
 105                /       |
 106              0,13 ------ 13,13
 107
 108
 109              PunchIn:
 110
 111              0,0 ------> 13,0
 112               |       /
 113               |      /
 114               |     /
 115               |    /
 116               |   /
 117               |  /
 118              0,13
 119
 120              PunchOut
 121
 122            0,0 -->-13,0
 123             \       |
 124              \      |
 125               \     |
 126                \    |
 127                 \   |
 128                  \  |
 129                  13,13
 130
 131
 132         */
 133
 134         switch (type) {
 135         case Mark:
 136                 points = new ArdourCanvas::Points ();
 137
 138                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 139                 points->push_back (Gnome::Art::Point (6.0, 0.0));
 140                 points->push_back (Gnome::Art::Point (6.0, 5.0));
 141                 points->push_back (Gnome::Art::Point (3.0, 10.0));
 142                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 143                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 144
 145                 shift = 3;
 146                 label_offset = 8.0;
 147                 break;
 148
 149         case Tempo:
 150         case Meter:
 151
 152                 points = new ArdourCanvas::Points ();
 153                 points->push_back (Gnome::Art::Point (3.0, 0.0));
 154                 points->push_back (Gnome::Art::Point (6.0, 5.0));
 155                 points->push_back (Gnome::Art::Point (6.0, 10.0));
 156                 points->push_back (Gnome::Art::Point (0.0, 10.0));
 157                 points->push_back (Gnome::Art::Point (0.0, 5.0));
 158                 points->push_back (Gnome::Art::Point (3.0, 0.0));
 159
 160                 shift = 3;
 161                 label_offset = 8.0;
 162                 break;
 163
 164         case Start:
 165                 points = new ArdourCanvas::Points ();
 166                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 167                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 168                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 169                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 170
 171                 shift = 0;
 172                 label_offset = 13.0;
 173                 break;
 174
 175         case End:
 176                 points = new ArdourCanvas::Points ();
 177                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 178                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 179                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 180                 points->push_back (Gnome::Art::Point (6.5, 6.5));
 181
 182                 shift = 13;
 183                 label_offset = 6.0;
 184                 break;
 185
 186         case LoopStart:
 187                 points = new ArdourCanvas::Points ();
 188                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 189                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 190                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 191                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 192
 193                 shift = 0;
 194                 label_offset = 12.0;
 195                 break;
 196
 197         case LoopEnd:
 198                 points = new ArdourCanvas::Points ();
 199                 points->push_back (Gnome::Art::Point (13.0,  0.0));
 200                 points->push_back (Gnome::Art::Point (13.0, 13.0));
 201                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 202                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 203
 204                 shift = 13;
 205                 label_offset = 0.0;
 206                 break;
 207
 208         case  PunchIn:
 209                 points = new ArdourCanvas::Points ();
 210                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 211                 points->push_back (Gnome::Art::Point (13.0, 0.0));
 212                 points->push_back (Gnome::Art::Point (0.0, 13.0));
 213                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 214
 215                 shift = 0;
 216                 label_offset = 13.0;
 217                 break;
 218
 219         case  PunchOut:
 220                 points = new ArdourCanvas::Points ();
 221                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 222                 points->push_back (Gnome::Art::Point (12.0, 0.0));
 223                 points->push_back (Gnome::Art::Point (12.0, 12.0));
 224                 points->push_back (Gnome::Art::Point (0.0, 0.0));
 225
 226                 shift = 13;
 227                 label_offset = 0.0;
 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
 247         /* setup name pixbuf sizes */
 248         name_font = get_font_for_style (N_("MarkerText"));
 249
 250         Gtk::Window win;
 251         Gtk::Label foo;
 252         win.add (foo);
 253
 254         Glib::RefPtr<Pango::Layout> layout = foo.create_pango_layout (X_("Hg")); /* ascender + descender */
 255         int width;
 256         int height;
 257
 258         layout->set_font_description (*name_font);
 259         Gtkmm2ext::get_ink_pixel_size (layout, width, height);
 260         name_height = height + 6;
 261
 262         name_pixbuf = new ArdourCanvas::Pixbuf(*group);
 263         name_pixbuf->property_x() = label_offset;
 264
 265         set_name (annotation.c_str());
 266
 267         editor.ZoomChanged.connect (mem_fun (*this, &Marker::reposition));
 268
 269         mark->set_data ("marker", this);
 270
 271         if (handle_events) {
 272                 group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_marker_event), mark, this));
 273         }
 274
 275         line = 0;
 276
 277 }
 278
 279
 280 Marker::~Marker ()
 281 {
 282         drop_references ();
 283
 284         /* destroying the parent group destroys its contents, namely any polygons etc. that we added */
 285         delete name_pixbuf;
 286         delete mark;
 287         delete points;
 288
 289         delete line;
 290         line = 0;
 291 }
 292
 293 void Marker::reparent(ArdourCanvas::Group & parent)
 294 {
 295         group->reparent(parent);
 296         _parent = &parent;
 297 }
 298
 299
 300 void
 301 Marker::set_line_vpos (double pos, double height)
 302 {
 303         if (line) {
 304                 line->property_y1() = pos;
 305                 line->property_y2() = pos + height;
 306         }
 307 }
 308
 309 void
 310 Marker::add_line (ArdourCanvas::Group* group, double y_origin, double initial_height)
 311 {
 312         if (!line) {
 313
 314                 line = new ArdourCanvas::SimpleLine (*group);
 315                 line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_EditPoint.get();
 316                 line->property_x1() = unit_position + shift;
 317                 line->property_y1() = y_origin;
 318                 line->property_x2() = unit_position + shift;
 319                 line->property_y2() = y_origin + initial_height;
 320
 321                 line->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_marker_event), mark, this));
 322         }
 323
 324         show_line ();
 325 }
 326
 327 void
 328 Marker::show_line ()
 329 {
 330         if (line) {
 331                 line->raise_to_top();
 332                 line->show ();
 333         }
 334 }
 335
 336 void
 337 Marker::hide_line ()
 338 {
 339         if (line) {
 340                 line->hide ();
 341         }
 342 }
 343
 344 ArdourCanvas::Item&
 345 Marker::the_item() const
 346 {
 347         return *mark;
 348 }
 349
 350 void
 351 Marker::set_name (const string& new_name)
 352 {
 353         uint32_t pb_width;
 354         double font_size;
 355
 356         font_size = name_font->get_size() / Pango::SCALE;
 357         pb_width = new_name.length() * font_size;
 358
 359         Glib::RefPtr<Gdk::Pixbuf> buf = Gdk::Pixbuf::create(Gdk::COLORSPACE_RGB, true, 8, pb_width, name_height);
 360
 361         cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, pb_width, name_height);
 362         cairo_t *cr = cairo_create (surface);
 363         cairo_text_extents_t te;
 364         cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
 365         cairo_select_font_face (cr, name_font->get_family().c_str(),
 366                                 CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
 367         cairo_set_font_size (cr, font_size);
 368         cairo_text_extents (cr, new_name.c_str(), &te);
 369
 370         cairo_move_to (cr, 0.5,
 371                        0.5 - te.height / 2 - te.y_bearing + name_height / 2);
 372         cairo_show_text (cr, new_name.c_str());
 373
 374         unsigned char* src = cairo_image_surface_get_data (surface);
 375         convert_bgra_to_rgba(src, buf->get_pixels(), pb_width, name_height);
 376
 377         cairo_destroy(cr);
 378         name_pixbuf->property_pixbuf() = buf;
 379
 380         if (_type == End || _type == LoopEnd || _type == PunchOut) {
 381                 name_pixbuf->property_x() = -(te.width);
 382         }
 383
 384 }
 385
 386 void
 387 Marker::set_position (nframes_t frame)
 388 {
 389         double new_unit_position = editor.frame_to_unit (frame);
 390         new_unit_position -= shift;
 391         group->move (new_unit_position - unit_position, 0.0);
 392         frame_position = frame;
 393         unit_position = new_unit_position;
 394
 395         if (line) {
 396                 line->property_x1() = unit_position + shift;
 397                 line->property_x2() = unit_position + shift;
 398         }
 399 }
 400
 401 void
 402 Marker::reposition ()
 403 {
 404         set_position (frame_position);
 405 }
 406
 407 void
 408 Marker::show ()
 409 {
 410         group->show();
 411 }
 412
 413 void
 414 Marker::hide ()
 415 {
 416         group->hide();
 417 }
 418
 419 void
 420 Marker::set_color_rgba (uint32_t color)
 421 {
 422         mark->property_fill_color_rgba() = color;
 423         mark->property_outline_color_rgba() = color;
 424 }
 425
 426 /***********************************************************************/
 427
 428 TempoMarker::TempoMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 429                           ARDOUR::TempoSection& temp)
 430         : Marker (editor, parent, rgba, text, Tempo, 0, false),
 431           _tempo (temp)
 432 {
 433         set_position (_tempo.frame());
 434         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_tempo_marker_event), mark, this));
 435 }
 436
 437 TempoMarker::~TempoMarker ()
 438 {
 439 }
 440
 441 /***********************************************************************/
 442
 443 MeterMarker::MeterMarker (PublicEditor& editor, ArdourCanvas::Group& parent, guint32 rgba, const string& text,
 444                           ARDOUR::MeterSection& m)
 445         : Marker (editor, parent, rgba, text, Meter, 0, false),
 446           _meter (m)
 447 {
 448         set_position (_meter.frame());
 449         group->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_meter_marker_event), mark, this));
 450 }
 451
 452 MeterMarker::~MeterMarker ()
 453 {
 454 }
 455