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