gtk2_ardour/port_matrix_column_labels.cc

   1 /*
   2     Copyright (C) 2002-2009 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 <iostream>
  21 #include "ardour/bundle.h"
  22 #include "ardour/types.h"
  23 #include "port_matrix_column_labels.h"
  24 #include "port_matrix.h"
  25 #include "port_matrix_body.h"
  26 #include "utils.h"
  27
  28 using namespace std;
  29
  30 PortMatrixColumnLabels::PortMatrixColumnLabels (PortMatrix* m, PortMatrixBody* b)
  31         : PortMatrixLabels (m, b),
  32           _overhang (0)
  33 {
  34
  35 }
  36
  37 void
  38 PortMatrixColumnLabels::compute_dimensions ()
  39 {
  40         GdkPixmap* pm = gdk_pixmap_new (NULL, 1, 1, 24);
  41         gdk_drawable_set_colormap (pm, gdk_colormap_get_system());
  42         cairo_t* cr = gdk_cairo_create (pm);
  43
  44         /* width of the longest bundle name */
  45         _longest_bundle_name = 0;
  46         /* width of the longest channel name */
  47         _longest_channel_name = 0;
  48         /* height of highest bit of text (apart from group names) */
  49         _highest_text = 0;
  50         /* width of the whole thing */
  51         _width = 0;
  52
  53         PortGroup::BundleList const c = _matrix->columns()->bundles();
  54         for (PortGroup::BundleList::const_iterator i = c.begin (); i != c.end(); ++i) {
  55
  56                 cairo_text_extents_t ext;
  57                 cairo_text_extents (cr, i->bundle->name().c_str(), &ext);
  58                 if (ext.width > _longest_bundle_name) {
  59                         _longest_bundle_name = ext.width;
  60                 }
  61                 if (ext.height > _highest_text) {
  62                         _highest_text = ext.height;
  63                 }
  64
  65                 for (uint32_t j = 0; j < i->bundle->nchannels (); ++j) {
  66
  67                         cairo_text_extents (
  68                                 cr,
  69                                 i->bundle->channel_name (j).c_str(),
  70                                 &ext
  71                                 );
  72
  73                         if (ext.width > _longest_channel_name) {
  74                                 _longest_channel_name = ext.width;
  75                         }
  76                         if (ext.height > _highest_text) {
  77                                 _highest_text = ext.height;
  78                         }
  79                 }
  80
  81                 if (_matrix->show_only_bundles()) {
  82                         _width += column_width();
  83                 } else {
  84                         _width += i->bundle->nchannels() * column_width();
  85                 }
  86         }
  87
  88         _highest_group_name = 0;
  89         for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
  90                 if ((*i)->visible()) {
  91                         cairo_text_extents_t ext;
  92                         cairo_text_extents (cr, (*i)->name.c_str(), &ext);
  93                         if (ext.height > _highest_group_name) {
  94                                 _highest_group_name = ext.height;
  95                         }
  96                 } else {
  97                         _width += column_width ();
  98                 }
  99         }
 100
 101         cairo_destroy (cr);
 102         gdk_pixmap_unref (pm);
 103
 104         /* height of the whole thing */
 105
 106         int a = _longest_bundle_name + 4 * name_pad();
 107         if (!_matrix->show_only_bundles()) {
 108                 a += _longest_channel_name;
 109         }
 110
 111         double const parallelogram_height =  a * sin (angle()) + _highest_text * cos (angle());
 112
 113         _height = parallelogram_height + _highest_group_name + 2 * name_pad();
 114
 115         _overhang = parallelogram_height / tan (angle ());
 116         _width += _overhang;
 117 }
 118
 119 double
 120 PortMatrixColumnLabels::basic_text_x_pos (int c) const
 121 {
 122         return column_width() / 2 +
 123                 _highest_text / (2 * sin (angle ()));
 124 }
 125
 126 void
 127 PortMatrixColumnLabels::render (cairo_t* cr)
 128 {
 129         /* BACKGROUND */
 130
 131         set_source_rgb (cr, background_colour());
 132         cairo_rectangle (cr, 0, 0, _width, _height);
 133         cairo_fill (cr);
 134
 135         /* PORT GROUP NAME */
 136
 137         double x = 0;
 138         double y = 0;
 139
 140         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 141                 x = slanted_height() / tan (angle());
 142                 y = _highest_group_name + name_pad();
 143         } else {
 144                 x = 0;
 145                 y = _height - name_pad();
 146         }
 147
 148         int g = 0;
 149         for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
 150
 151                 /* compute width of this group */
 152                 uint32_t w = 0;
 153                 if (!(*i)->visible() || (*i)->bundles().empty()) {
 154                         w = column_width ();
 155                 } else {
 156                         if (_matrix->show_only_bundles()) {
 157                                 w = (*i)->bundles().size() * column_width();
 158                         } else {
 159                                 w = (*i)->total_channels() * column_width();
 160                         }
 161                         }
 162
 163                 /* rectangle */
 164                 set_source_rgb (cr, get_a_group_colour (g));
 165                 double const rh = _highest_group_name + 2 * name_pad();
 166                 if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 167                         cairo_rectangle (cr, x, 0, w, rh);
 168                 } else {
 169                         cairo_rectangle (cr, x, _height - rh, w, rh);
 170                 }
 171                 cairo_fill (cr);
 172
 173                 string const upper = Glib::ustring ((*i)->name).uppercase ();
 174                 pair<string, double> const display = fit_to_pixels (cr, upper, w);
 175
 176                 /* plot it */
 177                 set_source_rgb (cr, text_colour());
 178                 cairo_move_to (cr, x + (w - display.second) / 2, y);
 179                 cairo_show_text (cr, display.first.c_str());
 180
 181                 x += w;
 182                 ++g;
 183
 184         }
 185
 186         /* BUNDLE PARALLELOGRAM-TYPE-THING AND NAME */
 187
 188         x = 0;
 189         int N = 0;
 190
 191         for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
 192
 193                 if ((*i)->visible ()) {
 194
 195                         PortGroup::BundleList const & bundles = (*i)->bundles ();
 196                         for (PortGroup::BundleList::const_iterator j = bundles.begin (); j != bundles.end(); ++j) {
 197
 198                                 Gdk::Color c = j->has_colour ? j->colour : get_a_bundle_colour (N);
 199                                 render_bundle_name (cr, c, x, 0, j->bundle);
 200
 201                                 if (_matrix->show_only_bundles()) {
 202                                         x += column_width();
 203                                 } else {
 204                                         x += j->bundle->nchannels () * column_width();
 205                                 }
 206
 207                                 ++N;
 208                         }
 209
 210                 } else {
 211
 212                         x += column_width ();
 213
 214                 }
 215         }
 216
 217
 218         /* PORT NAMES */
 219
 220         if (!_matrix->show_only_bundles()) {
 221                 x = 0;
 222                 N = 0;
 223                 for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
 224
 225                         if ((*i)->visible ()) {
 226
 227                                 PortGroup::BundleList const & bundles = (*i)->bundles ();
 228                                 for (PortGroup::BundleList::const_iterator j = bundles.begin (); j != bundles.end(); ++j) {
 229
 230                                         for (uint32_t k = 0; k < j->bundle->nchannels(); ++k) {
 231                                                 Gdk::Color c = j->has_colour ? j->colour : get_a_bundle_colour (N);
 232                                                 render_channel_name (cr, c, x, 0, ARDOUR::BundleChannel (j->bundle, k));
 233                                                 x += column_width();
 234                                         }
 235
 236                                         ++N;
 237                                 }
 238
 239                         } else {
 240
 241                                 x += column_width ();
 242
 243                         }
 244                 }
 245         }
 246 }
 247
 248 double
 249 PortMatrixColumnLabels::component_to_parent_x (double x) const
 250 {
 251         return x - _body->xoffset() + _parent_rectangle.get_x();
 252 }
 253
 254 double
 255 PortMatrixColumnLabels::parent_to_component_x (double x) const
 256 {
 257         return x + _body->xoffset() - _parent_rectangle.get_x();
 258 }
 259
 260 double
 261 PortMatrixColumnLabels::component_to_parent_y (double y) const
 262 {
 263         return y + _parent_rectangle.get_y();
 264 }
 265
 266 double
 267 PortMatrixColumnLabels::parent_to_component_y (double y) const
 268 {
 269         return y - _parent_rectangle.get_y();
 270 }
 271
 272 void
 273 PortMatrixColumnLabels::mouseover_changed (PortMatrixNode const &)
 274 {
 275         clear_channel_highlights ();
 276         if (_body->mouseover().column.bundle) {
 277                 add_channel_highlight (_body->mouseover().column);
 278         }
 279 }
 280
 281 vector<pair<double, double> >
 282 PortMatrixColumnLabels::port_name_shape (double xoff, double yoff) const
 283 {
 284         vector<pair<double, double> > shape;
 285
 286         double const lc = _longest_channel_name + name_pad();
 287         double const w = column_width();
 288
 289         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 290
 291                 double x_ = xoff + slanted_height() / tan (angle()) + w;
 292                 double y_ = yoff;
 293                 shape.push_back (make_pair (x_, y_));
 294                 x_ -= w;
 295                 shape.push_back (make_pair (x_, y_));
 296                 x_ -= lc * cos (angle());
 297                 y_ += lc * sin (angle());
 298                 shape.push_back (make_pair (x_, y_));
 299                 x_ += w * pow (sin (angle()), 2);
 300                 y_ += w * sin (angle()) * cos (angle());
 301                 shape.push_back (make_pair (x_, y_));
 302
 303         } else {
 304
 305                 double x_ = xoff;
 306                 double y_ = yoff + _height;
 307                 shape.push_back (make_pair (x_, y_));
 308                 x_ += w;
 309                 shape.push_back (make_pair (x_, y_));
 310                 x_ += lc * cos (angle());
 311                 y_ -= lc * sin (angle());
 312                 shape.push_back (make_pair (x_, y_));
 313                 x_ -= column_width() * pow (sin (angle()), 2);
 314                 y_ -= column_width() * sin (angle()) * cos (angle());
 315                 shape.push_back (make_pair (x_, y_));
 316         }
 317
 318         return shape;
 319 }
 320
 321 void
 322 PortMatrixColumnLabels::render_bundle_name (
 323         cairo_t* cr, Gdk::Color colour, double xoff, double yoff, boost::shared_ptr<ARDOUR::Bundle> b
 324         )
 325 {
 326         set_source_rgb (cr, colour);
 327
 328         double w = 0;
 329         if (_matrix->show_only_bundles()) {
 330                 w = column_width ();
 331         } else {
 332                 w = b->nchannels() * column_width();
 333         }
 334
 335         double x_ = xoff;
 336
 337         uint32_t y = yoff;
 338         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 339                 y += _height;
 340         } else {
 341                 y += slanted_height();
 342         }
 343
 344         double y_ = y;
 345         cairo_move_to (cr, x_, y_);
 346         x_ += w;
 347         cairo_line_to (cr, x_, y_);
 348         x_ += slanted_height() / tan (angle ());
 349         y_ -= slanted_height();
 350         cairo_line_to (cr, x_, y_);
 351         x_ -= w;
 352         cairo_line_to (cr, x_, y_);
 353         cairo_line_to (cr, xoff, y);
 354         cairo_fill_preserve (cr);
 355         set_source_rgb (cr, background_colour());
 356         cairo_set_line_width (cr, label_border_width());
 357         cairo_stroke (cr);
 358
 359         set_source_rgb (cr, text_colour());
 360
 361         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 362
 363                 double rl = 0;
 364                 if (_matrix->show_only_bundles()) {
 365                         rl = name_pad();
 366                 } else {
 367                         rl = 3 * name_pad() + _longest_channel_name;
 368                 }
 369                 cairo_move_to (
 370                         cr,
 371                         xoff + basic_text_x_pos (0) + rl * cos (angle()),
 372                         yoff + _height - rl * sin (angle())
 373                         );
 374
 375         } else {
 376
 377                 cairo_move_to (
 378                         cr,
 379                         xoff + basic_text_x_pos (0),
 380                         yoff + slanted_height() - name_pad() * sin (angle())
 381                         );
 382         }
 383
 384         cairo_save (cr);
 385         cairo_rotate (cr, -angle());
 386         cairo_show_text (cr, b->name().c_str());
 387         cairo_restore (cr);
 388 }
 389
 390 void
 391 PortMatrixColumnLabels::render_channel_name (
 392         cairo_t* cr, Gdk::Color colour, double xoff, double yoff, ARDOUR::BundleChannel const &bc
 393         )
 394 {
 395         vector<pair<double, double> > const shape = port_name_shape (xoff, yoff);
 396
 397         cairo_move_to (cr, shape[0].first, shape[0].second);
 398         for (uint32_t i = 1; i < 4; ++i) {
 399                 cairo_line_to (cr, shape[i].first, shape[i].second);
 400         }
 401         cairo_line_to (cr, shape[0].first, shape[0].second);
 402
 403         set_source_rgb (cr, colour);
 404         cairo_fill_preserve (cr);
 405         set_source_rgb (cr, background_colour());
 406         cairo_set_line_width (cr, label_border_width());
 407         cairo_stroke (cr);
 408
 409         set_source_rgb (cr, text_colour());
 410
 411         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 412
 413                 cairo_move_to (
 414                         cr,
 415                         xoff + basic_text_x_pos(bc.channel),
 416                         yoff + _height - name_pad() * sin (angle())
 417                         );
 418
 419         } else {
 420
 421                 double const rl = 3 * name_pad() + _longest_bundle_name;
 422                 cairo_move_to (
 423                         cr,
 424                         xoff + basic_text_x_pos(bc.channel) + rl * cos (angle ()),
 425                         yoff + slanted_height() - rl * sin (angle())
 426                         );
 427         }
 428
 429         cairo_save (cr);
 430         cairo_rotate (cr, -angle());
 431
 432         cairo_show_text (
 433                 cr,
 434                 bc.bundle->channel_name(bc.channel).c_str()
 435                 );
 436
 437         cairo_restore (cr);
 438 }
 439
 440 double
 441 PortMatrixColumnLabels::channel_x (ARDOUR::BundleChannel const &bc) const
 442 {
 443         uint32_t n = 0;
 444
 445         PortGroup::BundleList const & b = _matrix->columns()->bundles ();
 446         PortGroup::BundleList::const_iterator i = b.begin();
 447         while (i != b.end() && i->bundle != bc.bundle) {
 448                 if (_matrix->show_only_bundles()) {
 449                         n += 1;
 450                 } else {
 451                         n += i->bundle->nchannels ();
 452                 }
 453                 ++i;
 454         }
 455
 456         if (!_matrix->show_only_bundles()) {
 457                 n += bc.channel;
 458         }
 459
 460         return n * column_width();
 461 }
 462
 463 double
 464 PortMatrixColumnLabels::channel_y (ARDOUR::BundleChannel const &bc) const
 465 {
 466         return 0;
 467 }
 468
 469 void
 470 PortMatrixColumnLabels::queue_draw_for (ARDOUR::BundleChannel const & bc)
 471 {
 472         if (!bc.bundle) {
 473                 return;
 474         }
 475
 476         if (_matrix->show_only_bundles()) {
 477
 478                 _body->queue_draw_area (
 479                         component_to_parent_x (channel_x (bc)),
 480                         component_to_parent_y (0),
 481                         column_width() + _height * tan (angle()),
 482                         _height
 483                         );
 484
 485         } else {
 486
 487                 double const x = channel_x (bc);
 488                 double const lc = _longest_channel_name + name_pad();
 489                 double const h = lc * sin (angle ()) + column_width() * sin (angle()) * cos (angle());
 490
 491                 if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 492
 493                         _body->queue_draw_area (
 494                                 component_to_parent_x (x),
 495                                 component_to_parent_y (_height - h),
 496                                 column_width() + lc * cos (angle()),
 497                                 h
 498                                 );
 499
 500                 } else if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 501
 502                         double const x_ = x + slanted_height() / tan (angle()) - lc * cos (angle());
 503
 504                         _body->queue_draw_area (
 505                                 component_to_parent_x (x_),
 506                                 component_to_parent_y (0),
 507                                 column_width() + lc * cos (angle()),
 508                                 h
 509                                 );
 510
 511                 }
 512
 513         }
 514 }
 515
 516 pair<boost::shared_ptr<PortGroup>, ARDOUR::BundleChannel>
 517 PortMatrixColumnLabels::x_position_to_group_and_channel (double x, double y) const
 518 {
 519         uint32_t cx = 0;
 520         uint32_t const gh = _highest_group_name + 2 * name_pad();
 521
 522         bool group_name = false;
 523         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 524                 if (y > (_height - gh)) {
 525                         group_name = true;
 526                         cx = x;
 527                 } else {
 528                         cx = x - (_height - gh - y) * tan (angle ());
 529                 }
 530         } else {
 531                 if (y < gh) {
 532                         group_name = true;
 533                         cx = x - _overhang;
 534                 } else {
 535                         cx = x - (_height - y) * tan (angle ());
 536                 }
 537         }
 538
 539         uint32_t px = 0;
 540
 541         pair<boost::shared_ptr<PortGroup>, ARDOUR::BundleChannel> gc;
 542
 543         for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
 544
 545                 if (!(*i)->visible()) {
 546
 547                         uint32_t const gw = group_width (*i);
 548
 549                         if (px <= cx && cx < (px + gw)) {
 550                                 return make_pair (*i, ARDOUR::BundleChannel ());
 551                         } else {
 552                                 px += gw;
 553                         }
 554
 555                 } else {
 556
 557                         PortGroup::BundleList bundles = (*i)->bundles ();
 558                         for (PortGroup::BundleList::iterator j = bundles.begin(); j != bundles.end(); ++j) {
 559
 560                                 if (_matrix->show_only_bundles()) {
 561
 562                                         if (px <= cx && cx < (px + column_width())) {
 563                                                 return make_pair (*i, ARDOUR::BundleChannel (j->bundle, 0));
 564                                         } else {
 565                                                 px += column_width ();
 566                                         }
 567
 568                                 } else {
 569
 570                                         for (uint32_t k = 0; k < j->bundle->nchannels(); ++k) {
 571
 572                                                 if (px <= cx && cx < (px + column_width())) {
 573                                                         if (group_name) {
 574                                                                 return make_pair (*i, ARDOUR::BundleChannel ());
 575                                                         } else {
 576                                                                 return make_pair (*i, ARDOUR::BundleChannel (j->bundle, k));
 577                                                         }
 578                                                 }
 579
 580                                                 px += column_width ();
 581                                         }
 582                                 }
 583
 584                         }
 585                 }
 586
 587         }
 588
 589         return make_pair (boost::shared_ptr<PortGroup> (), ARDOUR::BundleChannel ());
 590 }
 591
 592 void
 593 PortMatrixColumnLabels::button_press (double x, double y, int b, uint32_t t)
 594 {
 595         pair<boost::shared_ptr<PortGroup>, ARDOUR::BundleChannel> gc = x_position_to_group_and_channel (x, y);
 596
 597         if (b == 1) {
 598
 599                 if (gc.second.bundle) {
 600                         _body->highlight_associated_channels (_matrix->column_index(), gc.second);
 601                 } else if (gc.first) {
 602                         gc.first->set_visible (!gc.first->visible ());
 603                 }
 604
 605         } else if (b == 3) {
 606
 607                         _matrix->popup_menu (
 608                                 gc,
 609                                 make_pair (boost::shared_ptr<PortGroup> (), ARDOUR::BundleChannel ()),
 610                                 t
 611                                 );
 612         }
 613 }
 614