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