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_min_1 ((*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         if (_matrix->show_only_bundles ()) {
 101                 cairo_move_to (cr, x, 0);
 102                 cairo_line_to (cr, x, _height);
 103                 cairo_stroke (cr);
 104         }
 105
 106         uint32_t y = 0;
 107
 108         /* HORIZONTAL GRID LINES */
 109
 110         N = 0;
 111         for (PortGroup::BundleList::const_iterator i = row_bundles.begin(); i != row_bundles.end(); ++i) {
 112
 113                 cairo_set_line_width (cr, thick_grid_line_width());
 114                 cairo_move_to (cr, 0, y);
 115                 cairo_line_to (cr, _width, y);
 116                 cairo_stroke (cr);
 117
 118                 if (!_matrix->show_only_bundles()) {
 119                         cairo_set_line_width (cr, thin_grid_line_width());
 120                         for (uint32_t j = 0; j < _matrix->count_of_our_type_min_1 ((*i)->bundle->nchannels()); ++j) {
 121                                 y += grid_spacing ();
 122                                 cairo_move_to (cr, 0, y);
 123                                 cairo_line_to (cr, _width, y);
 124                                 cairo_stroke (cr);
 125                         }
 126
 127                 } else {
 128
 129                         y += grid_spacing ();
 130
 131                 }
 132
 133                 ++N;
 134         }
 135
 136         if (_matrix->show_only_bundles ()) {
 137                 cairo_move_to (cr, 0, y);
 138                 cairo_line_to (cr, _width, y);
 139                 cairo_stroke (cr);
 140         }
 141
 142         /* ASSOCIATION INDICATORS and NON-CONNECTABLE INDICATORS */
 143
 144         /* we draw a grey square in a matrix box if the two ports that intersect at that box
 145            cannot be connected because they are of different types (MIDI vs. audio)
 146         */
 147
 148         uint32_t bx = 0;
 149         uint32_t by = 0;
 150
 151         if (_matrix->show_only_bundles()) {
 152
 153                 for (PortGroup::BundleList::const_iterator i = column_bundles.begin(); i != column_bundles.end(); ++i) {
 154                         by = 0;
 155
 156                         for (PortGroup::BundleList::const_iterator j = row_bundles.begin(); j != row_bundles.end(); ++j) {
 157
 158                                 PortMatrixNode::State s = _matrix->get_association (PortMatrixNode (
 159                                                                                    ARDOUR::BundleChannel ((*j)->bundle, 0),
 160                                                                                    ARDOUR::BundleChannel ((*i)->bundle, 0)
 161                                                                                    ));
 162                                 switch (s) {
 163                                 case PortMatrixNode::ASSOCIATED:
 164                                         draw_association_indicator (cr, bx, by);
 165                                         break;
 166                                 case PortMatrixNode::PARTIAL:
 167                                         draw_association_indicator (cr, bx, by, 0.5);
 168                                         break;
 169                                 default:
 170                                         break;
 171                                 }
 172
 173                                 by += grid_spacing();
 174                         }
 175
 176                         bx += grid_spacing();
 177
 178                 }
 179
 180         } else {
 181
 182                 for (PortGroup::BundleList::const_iterator i = column_bundles.begin(); i != column_bundles.end(); ++i) {
 183                         by = 0;
 184
 185                         for (PortGroup::BundleList::const_iterator j = row_bundles.begin(); j != row_bundles.end(); ++j) {
 186
 187                                 x = bx;
 188                                 for (uint32_t k = 0; k < _matrix->count_of_our_type ((*i)->bundle->nchannels()); ++k) {
 189
 190                                         y = by;
 191                                         for (uint32_t l = 0; l < _matrix->count_of_our_type ((*j)->bundle->nchannels()); ++l) {
 192
 193                                                 ARDOUR::BundleChannel c[2];
 194                                                 c[_matrix->column_index()] = ARDOUR::BundleChannel ((*i)->bundle, k);
 195                                                 c[_matrix->row_index()] = ARDOUR::BundleChannel ((*j)->bundle, l);
 196
 197                                                 if (c[0].bundle->channel_type (c[0].channel) != c[1].bundle->channel_type (c[1].channel)) {
 198                                                         /* these two channels are of different types */
 199                                                         draw_non_connectable_indicator (cr, x, y);
 200                                                 } else {
 201                                                         /* these two channels might be associated */
 202                                                         PortMatrixNode::State const s = _matrix->get_state (c);
 203
 204                                                         switch (s) {
 205                                                         case PortMatrixNode::ASSOCIATED:
 206                                                                 draw_association_indicator (cr, x, y);
 207                                                                 break;
 208
 209                                                         case PortMatrixNode::NOT_ASSOCIATED:
 210                                                                 break;
 211
 212                                                         default:
 213                                                                 break;
 214                                                         }
 215                                                 }
 216
 217                                                 y += grid_spacing();
 218                                         }
 219
 220                                         if (_matrix->count_of_our_type ((*j)->bundle->nchannels()) == 0) {
 221                                                 /* the *j bundle has no channels of our type, so it will have a dummy
 222                                                    one which needs to be marked non-connectable.
 223                                                 */
 224                                                 draw_non_connectable_indicator (cr, x, y);
 225                                         }
 226
 227                                         x += grid_spacing();
 228                                 }
 229
 230                                 if (_matrix->count_of_our_type ((*i)->bundle->nchannels()) == 0) {
 231                                         /* draw non-connectable indicators for the case where the *i bundle
 232                                            has no channels of our type (and hence has 1 dummy channel)
 233                                         */
 234                                         y = by;
 235                                         for (uint32_t l = 0; l < _matrix->count_of_our_type_min_1 ((*j)->bundle->nchannels()); ++l) {
 236                                                 draw_non_connectable_indicator (cr, x, y);
 237                                                 y += grid_spacing ();
 238                                         }
 239                                 }
 240
 241                                 by += _matrix->count_of_our_type_min_1 ((*j)->bundle->nchannels()) * grid_spacing();
 242                         }
 243
 244                         bx += _matrix->count_of_our_type_min_1 ((*i)->bundle->nchannels()) * grid_spacing();
 245                 }
 246         }
 247 }
 248
 249 void
 250 PortMatrixGrid::draw_association_indicator (cairo_t* cr, uint32_t x, uint32_t y, double p)
 251 {
 252         set_source_rgba (cr, association_colour(), 0.5);
 253
 254         cairo_arc (
 255                 cr,
 256                 x + grid_spacing() / 2,
 257                 y + grid_spacing() / 2,
 258                 (grid_spacing() - (2 * connection_indicator_pad())) / 2,
 259                 0,
 260                 p * 2 * M_PI
 261                 );
 262
 263         cairo_fill (cr);
 264 }
 265
 266 void
 267 PortMatrixGrid::draw_empty_square (cairo_t* cr, uint32_t x, uint32_t y)
 268 {
 269         set_source_rgb (cr, background_colour());
 270         cairo_rectangle (
 271                 cr,
 272                 x + thick_grid_line_width(),
 273                 y + thick_grid_line_width(),
 274                 grid_spacing() - 2 * thick_grid_line_width(),
 275                 grid_spacing() - 2 * thick_grid_line_width()
 276                 );
 277         cairo_fill (cr);
 278 }
 279
 280 /** Draw a square to indicate that two channels in a matrix cannot be associated
 281  *  with each other.
 282  */
 283 void
 284 PortMatrixGrid::draw_non_connectable_indicator (cairo_t* cr, uint32_t x, uint32_t y)
 285 {
 286         set_source_rgb (cr, non_connectable_colour ());
 287         cairo_rectangle (
 288                 cr,
 289                 x + thick_grid_line_width(),
 290                 y + thick_grid_line_width(),
 291                 grid_spacing() - 2 * thick_grid_line_width(),
 292                 grid_spacing() - 2 * thick_grid_line_width()
 293                 );
 294         cairo_fill (cr);
 295 }
 296
 297 PortMatrixNode
 298 PortMatrixGrid::position_to_node (double x, double y) const
 299 {
 300         return PortMatrixNode (
 301                 position_to_channel (y, x, _matrix->visible_rows()),
 302                 position_to_channel (x, y, _matrix->visible_columns())
 303                 );
 304 }
 305
 306 void
 307 PortMatrixGrid::button_press (double x, double y, int b, uint32_t t, guint)
 308 {
 309         ARDOUR::BundleChannel const px = position_to_channel (x, y, _matrix->visible_columns());
 310         ARDOUR::BundleChannel const py = position_to_channel (y, x, _matrix->visible_rows());
 311
 312         if (b == 1) {
 313
 314                 _dragging = true;
 315                 _drag_valid = (px.bundle && py.bundle);
 316
 317                 _moved = false;
 318                 _drag_start_x = x / grid_spacing ();
 319                 _drag_start_y = y / grid_spacing ();
 320
 321         } else if (b == 3) {
 322
 323                 _matrix->popup_menu (px, py, t);
 324
 325         }
 326 }
 327
 328 void
 329 PortMatrixGrid::set_association (PortMatrixNode node, bool s)
 330 {
 331         if (_matrix->show_only_bundles()) {
 332
 333                 for (uint32_t i = 0; i < node.column.bundle->nchannels().n_total(); ++i) {
 334                         for (uint32_t j = 0; j < node.row.bundle->nchannels().n_total(); ++j) {
 335
 336                                 if (!_matrix->should_show (node.column.bundle->channel_type(i)) || !_matrix->should_show (node.row.bundle->channel_type(j))) {
 337                                         continue;
 338                                 }
 339
 340                                 ARDOUR::BundleChannel c[2];
 341                                 c[_matrix->column_index()] = ARDOUR::BundleChannel (node.column.bundle, i);
 342                                 c[_matrix->row_index()] = ARDOUR::BundleChannel (node.row.bundle, j);
 343                                 _matrix->set_state (c, s && (i == j));
 344                         }
 345                 }
 346
 347         } else {
 348
 349                 if (node.row.bundle && node.column.bundle) {
 350
 351                         ARDOUR::BundleChannel c[2];
 352                         c[_matrix->row_index()] = node.row;
 353                         c[_matrix->column_index()] = node.column;
 354                         _matrix->set_state (c, s);
 355                 }
 356         }
 357 }
 358
 359 void
 360 PortMatrixGrid::button_release (double x, double y, int b, uint32_t /*t*/, guint s)
 361 {
 362         if (b == 1) {
 363
 364                 if (x != -1) {
 365
 366                         if (_dragging && _moved) {
 367
 368                                 if (_drag_valid) {
 369                                         list<PortMatrixNode> const p = nodes_on_line (_drag_start_x, _drag_start_y, _drag_x, _drag_y);
 370
 371                                         if (!p.empty()) {
 372                                                 PortMatrixNode::State const s = _matrix->get_association (p.front());
 373                                                 for (list<PortMatrixNode>::const_iterator i = p.begin(); i != p.end(); ++i) {
 374                                                         set_association (*i, toggle_state (s));
 375                                                 }
 376                                         }
 377                                 }
 378
 379                         } else {
 380
 381                                 if (Keyboard::modifier_state_equals (s, Keyboard::PrimaryModifier)) {
 382                                         /* associate/disassociate things diagonally down and right until we run out */
 383                                         PortMatrixNode::State s = (PortMatrixNode::State) 0;
 384                                         while (1) {
 385                                                 PortMatrixNode const n = position_to_node (x, y);
 386                                                 if (n.row.bundle && n.column.bundle) {
 387                                                         if (s == (PortMatrixNode::State) 0) {
 388                                                                 s = _matrix->get_association (n);
 389                                                         }
 390                                                         set_association (n, toggle_state (s));
 391                                                 } else {
 392                                                         break;
 393                                                 }
 394                                                 x += grid_spacing ();
 395                                                 y += grid_spacing ();
 396                                         }
 397
 398                                 } else {
 399
 400                                         PortMatrixNode const n = position_to_node (x, y);
 401                                         if (n.row.bundle && n.column.bundle) {
 402                                                 PortMatrixNode::State const s = _matrix->get_association (n);
 403                                                 set_association (n, toggle_state (s));
 404                                         }
 405                                 }
 406                         }
 407
 408                         require_render ();
 409                 }
 410
 411                 _body->queue_draw ();
 412         }
 413
 414         _dragging = false;
 415 }
 416
 417
 418 void
 419 PortMatrixGrid::draw_extra (cairo_t* cr)
 420 {
 421         set_source_rgba (cr, mouseover_line_colour(), 0.3);
 422         cairo_set_line_width (cr, mouseover_line_width());
 423
 424         list<PortMatrixNode> const m = _body->mouseover ();
 425
 426         for (list<PortMatrixNode>::const_iterator i = m.begin(); i != m.end(); ++i) {
 427
 428                 double const x = component_to_parent_x (channel_to_position (i->column, _matrix->visible_columns()) * grid_spacing()) + grid_spacing() / 2;
 429                 double const y = component_to_parent_y (channel_to_position (i->row, _matrix->visible_rows()) * grid_spacing()) + grid_spacing() / 2;
 430
 431                 if (PortMatrix::bundle_with_channels (i->row.bundle) && PortMatrix::bundle_with_channels (i->column.bundle)) {
 432
 433                         cairo_move_to (cr, x, y);
 434                         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 435                                 cairo_line_to (cr, component_to_parent_x (0), y);
 436                         } else if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 437                                 cairo_line_to (cr, _parent_rectangle.get_x() + _parent_rectangle.get_width(), y);
 438                         }
 439                         cairo_stroke (cr);
 440
 441                         cairo_move_to (cr, x, y);
 442                         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 443                                 cairo_line_to (cr, x, _parent_rectangle.get_y() + _parent_rectangle.get_height());
 444                         } else if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 445                                 cairo_line_to (cr, x, component_to_parent_y (0));
 446                         }
 447                         cairo_stroke (cr);
 448                 }
 449         }
 450
 451         if (_dragging && _drag_valid && _moved) {
 452
 453                 list<PortMatrixNode> const p = nodes_on_line (_drag_start_x, _drag_start_y, _drag_x, _drag_y);
 454
 455                 if (!p.empty()) {
 456
 457                         bool const s = toggle_state (_matrix->get_association (p.front()));
 458
 459                         for (list<PortMatrixNode>::const_iterator i = p.begin(); i != p.end(); ++i) {
 460                                 if (s) {
 461                                         draw_association_indicator (
 462                                                 cr,
 463                                                 component_to_parent_x (channel_to_position (i->column, _matrix->visible_columns()) * grid_spacing ()),
 464                                                 component_to_parent_y (channel_to_position (i->row, _matrix->visible_rows()) * grid_spacing ())
 465                                                 );
 466                                 } else {
 467                                         draw_empty_square (
 468                                                 cr,
 469                                                 component_to_parent_x (channel_to_position (i->column, _matrix->visible_columns()) * grid_spacing ()),
 470                                                 component_to_parent_y (channel_to_position (i->row, _matrix->visible_rows()) * grid_spacing ())
 471                                                 );
 472                                 }
 473                         }
 474                 }
 475
 476                 set_source_rgba (cr, association_colour (), 0.3);
 477
 478                 cairo_move_to (
 479                         cr,
 480                         component_to_parent_x (_drag_start_x * grid_spacing() + grid_spacing() / 2),
 481                         component_to_parent_y (_drag_start_y * grid_spacing() + grid_spacing() / 2)
 482                         );
 483
 484                 cairo_line_to (
 485                         cr,
 486                         component_to_parent_x (_drag_x * grid_spacing() + grid_spacing() / 2),
 487                         component_to_parent_y (_drag_y * grid_spacing() + grid_spacing() / 2)
 488                         );
 489
 490                 cairo_stroke (cr);
 491
 492         }
 493 }
 494
 495 void
 496 PortMatrixGrid::mouseover_changed (list<PortMatrixNode> const & old)
 497 {
 498         queue_draw_for (old);
 499         queue_draw_for (_body->mouseover());
 500 }
 501
 502 void
 503 PortMatrixGrid::motion (double x, double y)
 504 {
 505         _body->set_mouseover (position_to_node (x, y));
 506
 507         int const px = x / grid_spacing ();
 508         int const py = y / grid_spacing ();
 509
 510         if (_dragging && !_moved && ( (px != _drag_start_x || py != _drag_start_x) )) {
 511                 _moved = true;
 512         }
 513
 514         if (_dragging && _drag_valid && _moved) {
 515                 _drag_x = px;
 516                 _drag_y = py;
 517                 _body->queue_draw ();
 518         }
 519 }
 520
 521 void
 522 PortMatrixGrid::queue_draw_for (list<PortMatrixNode> const &n)
 523 {
 524         for (list<PortMatrixNode>::const_iterator i = n.begin(); i != n.end(); ++i) {
 525
 526                 if (i->row.bundle) {
 527
 528                         double const y = channel_to_position (i->row, _matrix->visible_rows()) * grid_spacing ();
 529                         _body->queue_draw_area (
 530                                 _parent_rectangle.get_x(),
 531                                 component_to_parent_y (y),
 532                                 _parent_rectangle.get_width(),
 533                                 grid_spacing()
 534                                 );
 535                 }
 536
 537                 if (i->column.bundle) {
 538
 539                         double const x = channel_to_position (i->column, _matrix->visible_columns()) * grid_spacing ();
 540
 541                         _body->queue_draw_area (
 542                                 component_to_parent_x (x),
 543                                 _parent_rectangle.get_y(),
 544                                 grid_spacing(),
 545                                 _parent_rectangle.get_height()
 546                                 );
 547                 }
 548         }
 549 }
 550
 551 double
 552 PortMatrixGrid::component_to_parent_x (double x) const
 553 {
 554         return x - _body->xoffset() + _parent_rectangle.get_x();
 555 }
 556
 557 double
 558 PortMatrixGrid::parent_to_component_x (double x) const
 559 {
 560         return x + _body->xoffset() - _parent_rectangle.get_x();
 561 }
 562
 563 double
 564 PortMatrixGrid::component_to_parent_y (double y) const
 565 {
 566         return y - _body->yoffset() + _parent_rectangle.get_y();
 567 }
 568
 569 double
 570 PortMatrixGrid::parent_to_component_y (double y) const
 571 {
 572         return y + _body->yoffset() - _parent_rectangle.get_y();
 573 }
 574
 575 list<PortMatrixNode>
 576 PortMatrixGrid::nodes_on_line (int x0, int y0, int x1, int y1) const
 577 {
 578         list<PortMatrixNode> p;
 579
 580         bool const steep = abs (y1 - y0) > abs (x1 - x0);
 581         if (steep) {
 582                 int tmp = x0;
 583                 x0 = y0;
 584                 y0 = tmp;
 585
 586                 tmp = y1;
 587                 y1 = x1;
 588                 x1 = tmp;
 589         }
 590
 591         if (x0 > x1) {
 592                 int tmp = x0;
 593                 x0 = x1;
 594                 x1 = tmp;
 595
 596                 tmp = y0;
 597                 y0 = y1;
 598                 y1 = tmp;
 599         }
 600
 601         int dx = x1 - x0;
 602         int dy = abs (y1 - y0);
 603
 604         double err = 0;
 605         double derr = double (dy) / dx;
 606
 607         int y = y0;
 608         int const ystep = y0 < y1 ? 1 : -1;
 609
 610         for (int x = x0; x <= x1; ++x) {
 611                 if (steep) {
 612                         PortMatrixNode n = position_to_node (y * grid_spacing (), x * grid_spacing ());
 613                         if (n.row.bundle && n.column.bundle) {
 614                                 p.push_back (n);
 615                         }
 616                 } else {
 617                         PortMatrixNode n = position_to_node (x * grid_spacing (), y * grid_spacing ());
 618                         if (n.row.bundle && n.column.bundle) {
 619                                 p.push_back (n);
 620                         }
 621                 }
 622
 623                 err += derr;
 624
 625                 if (err >= 0.5) {
 626                         y += ystep;
 627                         err -= 1;
 628                 }
 629         }
 630
 631         return p;
 632 }
 633
 634 bool
 635 PortMatrixGrid::toggle_state (PortMatrixNode::State s) const
 636 {
 637         return (s == PortMatrixNode::NOT_ASSOCIATED || s == PortMatrixNode::PARTIAL);
 638 }