gtk2_ardour/port_matrix_grid.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 <cairo/cairo.h>
  22 #include "ardour/bundle.h"
  23 #include "ardour/types.h"
  24 #include "port_matrix_grid.h"
  25 #include "port_matrix.h"
  26 #include "port_matrix_body.h"
  27 #include "keyboard.h"
  28
  29 using namespace std;
  30 using Gtkmm2ext::Keyboard;
  31
  32 PortMatrixGrid::PortMatrixGrid (PortMatrix* m, PortMatrixBody* b)
  33         : PortMatrixComponent (m, b),
  34           _dragging (false),
  35           _drag_valid (false),
  36           _moved (false)
  37 {
  38
  39 }
  40
  41 void
  42 PortMatrixGrid::compute_dimensions ()
  43 {
  44         if (_matrix->visible_columns()) {
  45                 _width = group_size (_matrix->visible_columns()) * grid_spacing ();
  46         } else {
  47                 _width = 0;
  48         }
  49
  50         if (_matrix->visible_rows()) {
  51                 _height = group_size (_matrix->visible_rows()) * grid_spacing ();
  52         } else {
  53                 _height = 0;
  54         }
  55 }
  56
  57
  58 void
  59 PortMatrixGrid::render (cairo_t* cr)
  60 {
  61         set_source_rgb (cr, background_colour());
  62         cairo_rectangle (cr, 0, 0, _width, _height);
  63         cairo_fill (cr);
  64
  65         PortGroup::BundleList const & row_bundles = _matrix->visible_rows()->bundles();
  66         PortGroup::BundleList const & column_bundles = _matrix->visible_columns()->bundles();
  67
  68         uint32_t x = 0;
  69
  70         /* VERTICAL GRID LINES */
  71
  72         set_source_rgb (cr, grid_colour());
  73         uint32_t N = 0;
  74
  75         for (PortGroup::BundleList::const_iterator i = column_bundles.begin(); i != column_bundles.end(); ++i) {
  76
  77                 cairo_set_line_width (cr, thick_grid_line_width());
  78                 cairo_move_to (cr, x, 0);
  79                 cairo_line_to (cr, x, _height);
  80                 cairo_stroke (cr);
  81
  82                 if (!_matrix->show_only_bundles()) {
  83                         cairo_set_line_width (cr, thin_grid_line_width());
  84                         for (uint32_t j = 0; j < _matrix->count_of_our_type ((*i)->bundle->nchannels()); ++j) {
  85                                 x += grid_spacing ();
  86                                 cairo_move_to (cr, x, 0);
  87                                 cairo_line_to (cr, x, _height);
  88                                 cairo_stroke (cr);
  89                         }
  90
  91                 } else {
  92
  93                         x += grid_spacing ();
  94
  95                 }
  96
  97                 ++N;
  98         }
  99
 100         uint32_t y = 0;
 101
 102         /* HORIZONTAL GRID LINES */
 103
 104         N = 0;
 105         for (PortGroup::BundleList::const_iterator i = row_bundles.begin(); i != row_bundles.end(); ++i) {
 106
 107                 cairo_set_line_width (cr, thick_grid_line_width());
 108                 cairo_move_to (cr, 0, y);
 109                 cairo_line_to (cr, _width, y);
 110                 cairo_stroke (cr);
 111
 112                 if (!_matrix->show_only_bundles()) {
 113                         cairo_set_line_width (cr, thin_grid_line_width());
 114                         for (uint32_t j = 0; j < _matrix->count_of_our_type ((*i)->bundle->nchannels()); ++j) {
 115                                 y += grid_spacing ();
 116                                 cairo_move_to (cr, 0, y);
 117                                 cairo_line_to (cr, _width, y);
 118                                 cairo_stroke (cr);
 119                         }
 120
 121                 } else {
 122
 123                         y += grid_spacing ();
 124
 125                 }
 126
 127                 ++N;
 128         }
 129
 130         /* ASSOCIATION INDICATORS */
 131
 132         uint32_t bx = 0;
 133         uint32_t by = 0;
 134
 135         if (_matrix->show_only_bundles()) {
 136
 137                 for (PortGroup::BundleList::const_iterator i = column_bundles.begin(); i != column_bundles.end(); ++i) {
 138                         by = 0;
 139
 140                         for (PortGroup::BundleList::const_iterator j = row_bundles.begin(); j != row_bundles.end(); ++j) {
 141
 142                                 PortMatrixNode::State s = get_association (PortMatrixNode (
 143                                                                                    ARDOUR::BundleChannel ((*i)->bundle, 0),
 144                                                                                    ARDOUR::BundleChannel ((*j)->bundle, 0)
 145                                                                                    ));
 146                                 switch (s) {
 147                                 case PortMatrixNode::ASSOCIATED:
 148                                         draw_association_indicator (cr, bx, by);
 149                                         break;
 150                                 case PortMatrixNode::PARTIAL:
 151                                         draw_association_indicator (cr, bx, by, 0.5);
 152                                         break;
 153                                 default:
 154                                         break;
 155                                 }
 156
 157                                 by += grid_spacing();
 158                         }
 159
 160                         bx += grid_spacing();
 161
 162                 }
 163
 164         } else {
 165
 166                 for (PortGroup::BundleList::const_iterator i = column_bundles.begin(); i != column_bundles.end(); ++i) {
 167                         by = 0;
 168
 169                         for (PortGroup::BundleList::const_iterator j = row_bundles.begin(); j != row_bundles.end(); ++j) {
 170
 171                                 x = bx;
 172                                 for (uint32_t k = 0; k < (*i)->bundle->nchannels().n_total(); ++k) {
 173
 174                                         y = by;
 175                                         for (uint32_t l = 0; l < (*j)->bundle->nchannels().n_total(); ++l) {
 176
 177                                                 if (!_matrix->should_show ((*i)->bundle->channel_type(k)) || !_matrix->should_show ((*j)->bundle->channel_type(l))) {
 178                                                         continue;
 179                                                 }
 180
 181                                                 ARDOUR::BundleChannel c[2];
 182                                                 c[_matrix->column_index()] = ARDOUR::BundleChannel ((*i)->bundle, k);
 183                                                 c[_matrix->row_index()] = ARDOUR::BundleChannel ((*j)->bundle, l);
 184
 185                                                 PortMatrixNode::State const s = _matrix->get_state (c);
 186
 187                                                 switch (s) {
 188                                                 case PortMatrixNode::ASSOCIATED:
 189                                                         draw_association_indicator (cr, x, y);
 190                                                         break;
 191
 192                                                 case PortMatrixNode::NOT_ASSOCIATED:
 193                                                         break;
 194
 195                                                 default:
 196                                                         break;
 197                                                 }
 198
 199                                                 y += grid_spacing();
 200                                         }
 201
 202                                         x += grid_spacing();
 203                                 }
 204
 205                                 by += _matrix->count_of_our_type ((*j)->bundle->nchannels()) * grid_spacing();
 206                         }
 207
 208                         bx += _matrix->count_of_our_type ((*i)->bundle->nchannels()) * grid_spacing();
 209                 }
 210         }
 211 }
 212
 213 void
 214 PortMatrixGrid::draw_association_indicator (cairo_t* cr, uint32_t x, uint32_t y, double p)
 215 {
 216         set_source_rgba (cr, association_colour(), 0.5);
 217
 218         cairo_arc (
 219                 cr,
 220                 x + grid_spacing() / 2,
 221                 y + grid_spacing() / 2,
 222                 (grid_spacing() - (2 * connection_indicator_pad())) / 2,
 223                 0,
 224                 p * 2 * M_PI
 225                 );
 226
 227         cairo_fill (cr);
 228 }
 229
 230 void
 231 PortMatrixGrid::draw_empty_square (cairo_t* cr, uint32_t x, uint32_t y)
 232 {
 233         set_source_rgb (cr, background_colour());
 234         cairo_rectangle (
 235                 cr,
 236                 x + thick_grid_line_width(),
 237                 y + thick_grid_line_width(),
 238                 grid_spacing() - 2 * thick_grid_line_width(),
 239                 grid_spacing() - 2 * thick_grid_line_width()
 240                 );
 241         cairo_fill (cr);
 242 }
 243
 244 PortMatrixNode
 245 PortMatrixGrid::position_to_node (double x, double y) const
 246 {
 247         return PortMatrixNode (
 248                 position_to_channel (y, x, _matrix->visible_rows()),
 249                 position_to_channel (x, y, _matrix->visible_columns())
 250                 );
 251 }
 252
 253 void
 254 PortMatrixGrid::button_press (double x, double y, int b, uint32_t t, guint)
 255 {
 256         ARDOUR::BundleChannel const px = position_to_channel (x, y, _matrix->visible_columns());
 257         ARDOUR::BundleChannel const py = position_to_channel (y, x, _matrix->visible_rows());
 258
 259         if (b == 1) {
 260
 261                 _dragging = true;
 262                 _drag_valid = (px.bundle && py.bundle);
 263
 264                 _moved = false;
 265                 _drag_start_x = x / grid_spacing ();
 266                 _drag_start_y = y / grid_spacing ();
 267
 268         } else if (b == 3) {
 269
 270                 _matrix->popup_menu (px, py, t);
 271
 272         }
 273 }
 274
 275 PortMatrixNode::State
 276 PortMatrixGrid::get_association (PortMatrixNode node) const
 277 {
 278         if (_matrix->show_only_bundles()) {
 279
 280                 bool have_off_diagonal_association = false;
 281                 bool have_diagonal_association = false;
 282                 bool have_diagonal_not_association = false;
 283
 284                 for (uint32_t i = 0; i < node.row.bundle->nchannels().n_total(); ++i) {
 285
 286                         for (uint32_t j = 0; j < node.column.bundle->nchannels().n_total(); ++j) {
 287
 288                                 if (!_matrix->should_show (node.row.bundle->channel_type(i)) || !_matrix->should_show (node.column.bundle->channel_type(j))) {
 289                                         continue;
 290                                 }
 291
 292                                 ARDOUR::BundleChannel c[2];
 293                                 c[_matrix->column_index()] = ARDOUR::BundleChannel (node.row.bundle, i);
 294                                 c[_matrix->row_index()] = ARDOUR::BundleChannel (node.column.bundle, j);
 295
 296                                 PortMatrixNode::State const s = _matrix->get_state (c);
 297
 298                                 switch (s) {
 299                                 case PortMatrixNode::ASSOCIATED:
 300                                         if (i == j) {
 301                                                 have_diagonal_association = true;
 302                                         } else {
 303                                                 have_off_diagonal_association = true;
 304                                         }
 305                                         break;
 306
 307                                 case PortMatrixNode::NOT_ASSOCIATED:
 308                                         if (i == j) {
 309                                                 have_diagonal_not_association = true;
 310                                         }
 311                                         break;
 312
 313                                 default:
 314                                         break;
 315                                 }
 316                         }
 317                 }
 318
 319                 if (have_diagonal_association && !have_off_diagonal_association && !have_diagonal_not_association) {
 320                         return PortMatrixNode::ASSOCIATED;
 321                 } else if (!have_diagonal_association && !have_off_diagonal_association) {
 322                         return PortMatrixNode::NOT_ASSOCIATED;
 323                 }
 324
 325                 return PortMatrixNode::PARTIAL;
 326
 327         } else {
 328
 329                 ARDOUR::BundleChannel c[2];
 330                 c[_matrix->column_index()] = node.column;
 331                 c[_matrix->row_index()] = node.row;
 332                 return _matrix->get_state (c);
 333
 334         }
 335
 336         /* NOTREACHED */
 337         return PortMatrixNode::NOT_ASSOCIATED;
 338 }
 339
 340 void
 341 PortMatrixGrid::set_association (PortMatrixNode node, bool s)
 342 {
 343         if (_matrix->show_only_bundles()) {
 344
 345                 for (uint32_t i = 0; i < node.column.bundle->nchannels().n_total(); ++i) {
 346                         for (uint32_t j = 0; j < node.row.bundle->nchannels().n_total(); ++j) {
 347
 348                                 if (!_matrix->should_show (node.column.bundle->channel_type(i)) || !_matrix->should_show (node.row.bundle->channel_type(j))) {
 349                                         continue;
 350                                 }
 351
 352                                 ARDOUR::BundleChannel c[2];
 353                                 c[_matrix->column_index()] = ARDOUR::BundleChannel (node.column.bundle, i);
 354                                 c[_matrix->row_index()] = ARDOUR::BundleChannel (node.row.bundle, j);
 355                                 _matrix->set_state (c, s && (i == j));
 356                         }
 357                 }
 358
 359         } else {
 360
 361                 if (node.row.bundle && node.column.bundle) {
 362
 363                         ARDOUR::BundleChannel c[2];
 364                         c[_matrix->row_index()] = node.row;
 365                         c[_matrix->column_index()] = node.column;
 366                         _matrix->set_state (c, s);
 367                 }
 368         }
 369 }
 370
 371 void
 372 PortMatrixGrid::button_release (double x, double y, int b, uint32_t /*t*/, guint s)
 373 {
 374         if (b == 1) {
 375
 376                 if (x != -1) {
 377
 378                         if (_dragging && _moved) {
 379
 380                                 if (_drag_valid) {
 381                                         list<PortMatrixNode> const p = nodes_on_line (_drag_start_x, _drag_start_y, _drag_x, _drag_y);
 382
 383                                         if (!p.empty()) {
 384                                                 PortMatrixNode::State const s = get_association (p.front());
 385                                                 for (list<PortMatrixNode>::const_iterator i = p.begin(); i != p.end(); ++i) {
 386                                                         set_association (*i, toggle_state (s));
 387                                                 }
 388                                         }
 389                                 }
 390
 391                         } else {
 392
 393                                 if (Keyboard::modifier_state_equals (s, Keyboard::PrimaryModifier)) {
 394                                         /* associate/disassociate things diagonally down and right until we run out */
 395                                         PortMatrixNode::State s = (PortMatrixNode::State) 0;
 396                                         while (1) {
 397                                                 PortMatrixNode const n = position_to_node (x, y);
 398                                                 if (n.row.bundle && n.column.bundle) {
 399                                                         if (s == (PortMatrixNode::State) 0) {
 400                                                                 s = get_association (n);
 401                                                         }
 402                                                         set_association (n, toggle_state (s));
 403                                                 } else {
 404                                                         break;
 405                                                 }
 406                                                 x += grid_spacing ();
 407                                                 y += grid_spacing ();
 408                                         }
 409
 410                                 } else {
 411
 412                                         PortMatrixNode const n = position_to_node (x, y);
 413                                         if (n.row.bundle && n.column.bundle) {
 414                                                 PortMatrixNode::State const s = get_association (n);
 415                                                 set_association (n, toggle_state (s));
 416                                         }
 417                                 }
 418                         }
 419
 420                         require_render ();
 421                 }
 422
 423                 _body->queue_draw ();
 424         }
 425
 426         _dragging = false;
 427 }
 428
 429
 430 void
 431 PortMatrixGrid::draw_extra (cairo_t* cr)
 432 {
 433         set_source_rgba (cr, mouseover_line_colour(), 0.3);
 434         cairo_set_line_width (cr, mouseover_line_width());
 435
 436         list<PortMatrixNode> const m = _body->mouseover ();
 437
 438         for (list<PortMatrixNode>::const_iterator i = m.begin(); i != m.end(); ++i) {
 439
 440                 double const x = component_to_parent_x (channel_to_position (i->column, _matrix->visible_columns()) * grid_spacing()) + grid_spacing() / 2;
 441                 double const y = component_to_parent_y (channel_to_position (i->row, _matrix->visible_rows()) * grid_spacing()) + grid_spacing() / 2;
 442
 443                 if (i->row.bundle && i->column.bundle) {
 444
 445                         cairo_move_to (cr, x, y);
 446                         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 447                                 cairo_line_to (cr, component_to_parent_x (0), y);
 448                         } else if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 449                                 cairo_line_to (cr, _parent_rectangle.get_x() + _parent_rectangle.get_width(), y);
 450                         }
 451                         cairo_stroke (cr);
 452
 453                         cairo_move_to (cr, x, y);
 454                         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 455                                 cairo_line_to (cr, x, _parent_rectangle.get_y() + _parent_rectangle.get_height());
 456                         } else if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 457                                 cairo_line_to (cr, x, component_to_parent_y (0));
 458                         }
 459                         cairo_stroke (cr);
 460                 }
 461         }
 462
 463         if (_dragging && _drag_valid && _moved) {
 464
 465                 list<PortMatrixNode> const p = nodes_on_line (_drag_start_x, _drag_start_y, _drag_x, _drag_y);
 466
 467                 if (!p.empty()) {
 468
 469                         bool const s = toggle_state (get_association (p.front()));
 470
 471                         for (list<PortMatrixNode>::const_iterator i = p.begin(); i != p.end(); ++i) {
 472                                 if (s) {
 473                                         draw_association_indicator (
 474                                                 cr,
 475                                                 component_to_parent_x (channel_to_position (i->column, _matrix->visible_columns()) * grid_spacing ()),
 476                                                 component_to_parent_y (channel_to_position (i->row, _matrix->visible_rows()) * grid_spacing ())
 477                                                 );
 478                                 } else {
 479                                         draw_empty_square (
 480                                                 cr,
 481                                                 component_to_parent_x (channel_to_position (i->column, _matrix->visible_columns()) * grid_spacing ()),
 482                                                 component_to_parent_y (channel_to_position (i->row, _matrix->visible_rows()) * grid_spacing ())
 483                                                 );
 484                                 }
 485                         }
 486                 }
 487
 488                 set_source_rgba (cr, association_colour (), 0.3);
 489
 490                 cairo_move_to (
 491                         cr,
 492                         component_to_parent_x (_drag_start_x * grid_spacing() + grid_spacing() / 2),
 493                         component_to_parent_y (_drag_start_y * grid_spacing() + grid_spacing() / 2)
 494                         );
 495
 496                 cairo_line_to (
 497                         cr,
 498                         component_to_parent_x (_drag_x * grid_spacing() + grid_spacing() / 2),
 499                         component_to_parent_y (_drag_y * grid_spacing() + grid_spacing() / 2)
 500                         );
 501
 502                 cairo_stroke (cr);
 503
 504         }
 505 }
 506
 507 void
 508 PortMatrixGrid::mouseover_changed (list<PortMatrixNode> const & old)
 509 {
 510         queue_draw_for (old);
 511         queue_draw_for (_body->mouseover());
 512 }
 513
 514 void
 515 PortMatrixGrid::motion (double x, double y)
 516 {
 517         _body->set_mouseover (position_to_node (x, y));
 518
 519         int const px = x / grid_spacing ();
 520         int const py = y / grid_spacing ();
 521
 522         if (_dragging && !_moved && ( (px != _drag_start_x || py != _drag_start_x) )) {
 523                 _moved = true;
 524         }
 525
 526         if (_dragging && _drag_valid && _moved) {
 527                 _drag_x = px;
 528                 _drag_y = py;
 529                 _body->queue_draw ();
 530         }
 531 }
 532
 533 void
 534 PortMatrixGrid::queue_draw_for (list<PortMatrixNode> const &n)
 535 {
 536         for (list<PortMatrixNode>::const_iterator i = n.begin(); i != n.end(); ++i) {
 537
 538                 if (i->row.bundle) {
 539
 540                         double const y = channel_to_position (i->row, _matrix->visible_rows()) * grid_spacing ();
 541                         _body->queue_draw_area (
 542                                 _parent_rectangle.get_x(),
 543                                 component_to_parent_y (y),
 544                                 _parent_rectangle.get_width(),
 545                                 grid_spacing()
 546                                 );
 547                 }
 548
 549                 if (i->column.bundle) {
 550
 551                         double const x = channel_to_position (i->column, _matrix->visible_columns()) * grid_spacing ();
 552
 553                         _body->queue_draw_area (
 554                                 component_to_parent_x (x),
 555                                 _parent_rectangle.get_y(),
 556                                 grid_spacing(),
 557                                 _parent_rectangle.get_height()
 558                                 );
 559                 }
 560         }
 561 }
 562
 563 double
 564 PortMatrixGrid::component_to_parent_x (double x) const
 565 {
 566         return x - _body->xoffset() + _parent_rectangle.get_x();
 567 }
 568
 569 double
 570 PortMatrixGrid::parent_to_component_x (double x) const
 571 {
 572         return x + _body->xoffset() - _parent_rectangle.get_x();
 573 }
 574
 575 double
 576 PortMatrixGrid::component_to_parent_y (double y) const
 577 {
 578         return y - _body->yoffset() + _parent_rectangle.get_y();
 579 }
 580
 581 double
 582 PortMatrixGrid::parent_to_component_y (double y) const
 583 {
 584         return y + _body->yoffset() - _parent_rectangle.get_y();
 585 }
 586
 587 list<PortMatrixNode>
 588 PortMatrixGrid::nodes_on_line (int x0, int y0, int x1, int y1) const
 589 {
 590         list<PortMatrixNode> p;
 591
 592         bool const steep = abs (y1 - y0) > abs (x1 - x0);
 593         if (steep) {
 594                 int tmp = x0;
 595                 x0 = y0;
 596                 y0 = tmp;
 597
 598                 tmp = y1;
 599                 y1 = x1;
 600                 x1 = tmp;
 601         }
 602
 603         if (x0 > x1) {
 604                 int tmp = x0;
 605                 x0 = x1;
 606                 x1 = tmp;
 607
 608                 tmp = y0;
 609                 y0 = y1;
 610                 y1 = tmp;
 611         }
 612
 613         int dx = x1 - x0;
 614         int dy = abs (y1 - y0);
 615
 616         double err = 0;
 617         double derr = double (dy) / dx;
 618
 619         int y = y0;
 620         int const ystep = y0 < y1 ? 1 : -1;
 621
 622         for (int x = x0; x <= x1; ++x) {
 623                 if (steep) {
 624                         PortMatrixNode n = position_to_node (y * grid_spacing (), x * grid_spacing ());
 625                         if (n.row.bundle && n.column.bundle) {
 626                                 p.push_back (n);
 627                         }
 628                 } else {
 629                         PortMatrixNode n = position_to_node (x * grid_spacing (), y * grid_spacing ());
 630                         if (n.row.bundle && n.column.bundle) {
 631                                 p.push_back (n);
 632                         }
 633                 }
 634
 635                 err += derr;
 636
 637                 if (err >= 0.5) {
 638                         y += ystep;
 639                         err -= 1;
 640                 }
 641         }
 642
 643         return p;
 644 }
 645
 646 bool
 647 PortMatrixGrid::toggle_state (PortMatrixNode::State s) const
 648 {
 649         return (s == PortMatrixNode::NOT_ASSOCIATED || s == PortMatrixNode::PARTIAL);
 650 }