gtk2_ardour/port_matrix.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 <gtkmm/scrolledwindow.h>
  22 #include <gtkmm/adjustment.h>
  23 #include <gtkmm/label.h>
  24 #include <gtkmm/menu.h>
  25 #include <gtkmm/menushell.h>
  26 #include <gtkmm/menu_elems.h>
  27 #include <gtkmm/window.h>
  28 #include <gtkmm/stock.h>
  29 #include "ardour/bundle.h"
  30 #include "ardour/types.h"
  31 #include "ardour/session.h"
  32 #include "ardour/route.h"
  33 #include "ardour/audioengine.h"
  34 #include "port_matrix.h"
  35 #include "port_matrix_body.h"
  36 #include "port_matrix_component.h"
  37 #include "ardour_dialog.h"
  38 #include "i18n.h"
  39 #include "gui_thread.h"
  40 #include "utils.h"
  41
  42 using namespace std;
  43 using namespace Gtk;
  44 using namespace ARDOUR;
  45
  46 /** PortMatrix constructor.
  47  *  @param session Our session.
  48  *  @param type Port type that we are handling.
  49  */
  50 PortMatrix::PortMatrix (Window* parent, Session* session, DataType type)
  51         : Table (4, 4)
  52         , _parent (parent)
  53         , _type (type)
  54         , _menu (0)
  55         , _arrangement (TOP_TO_RIGHT)
  56         , _row_index (0)
  57         , _column_index (1)
  58         , _min_height_divisor (1)
  59         , _show_only_bundles (false)
  60         , _inhibit_toggle_show_only_bundles (false)
  61         , _ignore_notebook_page_selected (false)
  62 {
  63         set_session (session);
  64
  65         _body = new PortMatrixBody (this);
  66         _body->DimensionsChanged.connect (sigc::mem_fun (*this, &PortMatrix::body_dimensions_changed));
  67
  68         _hbox.pack_end (_hspacer, true, true);
  69         _hbox.pack_end (_hnotebook, false, false);
  70         _hbox.pack_end (_hlabel, false, false);
  71
  72         _vnotebook.signal_switch_page().connect (sigc::mem_fun (*this, &PortMatrix::notebook_page_selected));
  73         _vnotebook.property_tab_border() = 4;
  74         _vnotebook.set_name (X_("PortMatrixLabel"));
  75         _hnotebook.signal_switch_page().connect (sigc::mem_fun (*this, &PortMatrix::notebook_page_selected));
  76         _hnotebook.property_tab_border() = 4;
  77         _hnotebook.set_name (X_("PortMatrixLabel"));
  78
  79         _vlabel.set_use_markup ();
  80         _vlabel.set_alignment (1, 1);
  81         _vlabel.set_padding (4, 16);
  82         _vlabel.set_name (X_("PortMatrixLabel"));
  83         _hlabel.set_use_markup ();
  84         _hlabel.set_alignment (1, 0.5);
  85         _hlabel.set_padding (16, 4);
  86         _hlabel.set_name (X_("PortMatrixLabel"));
  87
  88         set_row_spacing (0, 8);
  89         set_col_spacing (0, 8);
  90         set_row_spacing (2, 8);
  91         set_col_spacing (2, 8);
  92
  93         _body->show ();
  94         _vbox.show ();
  95         _hbox.show ();
  96         _vscroll.show ();
  97         _hscroll.show ();
  98         _vlabel.show ();
  99         _hlabel.show ();
 100         _hspacer.show ();
 101         _vspacer.show ();
 102         _vnotebook.show ();
 103         _hnotebook.show ();
 104 }
 105
 106 PortMatrix::~PortMatrix ()
 107 {
 108         delete _body;
 109         delete _menu;
 110 }
 111
 112 /** Perform initial and once-only setup.  This must be called by
 113  *  subclasses after they have set up _ports[] to at least some
 114  *  reasonable extent.  Two-part initialisation is necessary because
 115  *  setting up _ports is largely done by virtual functions in
 116  *  subclasses.
 117  */
 118
 119 void
 120 PortMatrix::init ()
 121 {
 122         select_arrangement ();
 123
 124         /* Signal handling is kind of split into three parts:
 125          *
 126          * 1.  When _ports[] changes, we call setup().  This essentially sorts out our visual
 127          *     representation of the information in _ports[].
 128          *
 129          * 2.  When certain other things change, we need to get our subclass to clear and
 130          *     re-fill _ports[], which in turn causes appropriate signals to be raised to
 131          *     hook into part (1).
 132          *
 133          * 3.  Assorted other signals.
 134          */
 135
 136
 137         /* Part 1: the basic _ports[] change -> reset visuals */
 138
 139         for (int i = 0; i < 2; ++i) {
 140                 /* watch for the content of _ports[] changing */
 141                 _ports[i].Changed.connect (_changed_connections, invalidator (*this), boost::bind (&PortMatrix::setup, this), gui_context());
 142
 143                 /* and for bundles in _ports[] changing */
 144                 _ports[i].BundleChanged.connect (_bundle_changed_connections, invalidator (*this), boost::bind (&PortMatrix::setup, this), gui_context());
 145         }
 146
 147         /* Part 2: notice when things have changed that require our subclass to clear and refill _ports[] */
 148
 149         /* watch for routes being added or removed */
 150         _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::routes_changed, this), gui_context());
 151
 152         /* and also bundles */
 153         _session->BundleAdded.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::setup_global_ports, this), gui_context());
 154
 155         /* and also ports */
 156         _session->engine().PortRegisteredOrUnregistered.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::setup_global_ports, this), gui_context());
 157
 158         /* watch for route order keys changing, which changes the order of things in our global ports list(s) */
 159         _session->RouteOrderKeyChanged.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::setup_global_ports_proxy, this), gui_context());
 160
 161         /* Part 3: other stuff */
 162
 163         _session->engine().PortConnectedOrDisconnected.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::port_connected_or_disconnected, this), gui_context ());
 164
 165         _hscroll.signal_value_changed().connect (sigc::mem_fun (*this, &PortMatrix::hscroll_changed));
 166         _vscroll.signal_value_changed().connect (sigc::mem_fun (*this, &PortMatrix::vscroll_changed));
 167
 168         reconnect_to_routes ();
 169
 170         setup ();
 171 }
 172
 173 /** Disconnect from and reconnect to routes' signals that we need to watch for things that affect the matrix */
 174 void
 175 PortMatrix::reconnect_to_routes ()
 176 {
 177         _route_connections.drop_connections ();
 178
 179         boost::shared_ptr<RouteList> routes = _session->get_routes ();
 180         for (RouteList::iterator i = routes->begin(); i != routes->end(); ++i) {
 181                 (*i)->processors_changed.connect (_route_connections, invalidator (*this), ui_bind (&PortMatrix::route_processors_changed, this, _1), gui_context());
 182         }
 183 }
 184
 185 void
 186 PortMatrix::route_processors_changed (RouteProcessorChange c)
 187 {
 188         if (c.type == RouteProcessorChange::MeterPointChange) {
 189                 /* this change has no impact on the port matrix */
 190                 return;
 191         }
 192
 193         setup_global_ports ();
 194 }
 195
 196 /** A route has been added to or removed from the session */
 197 void
 198 PortMatrix::routes_changed ()
 199 {
 200         reconnect_to_routes ();
 201         setup_global_ports ();
 202 }
 203
 204 /** Set up everything that depends on the content of _ports[] */
 205 void
 206 PortMatrix::setup ()
 207 {
 208         /* this needs to be done first, as the visible_ports() method uses the
 209            notebook state to decide which ports are being shown */
 210
 211         setup_notebooks ();
 212
 213         _body->setup ();
 214         setup_scrollbars ();
 215         queue_draw ();
 216 }
 217
 218 void
 219 PortMatrix::set_type (DataType t)
 220 {
 221         _type = t;
 222 }
 223
 224 void
 225 PortMatrix::hscroll_changed ()
 226 {
 227         _body->set_xoffset (_hscroll.get_adjustment()->get_value());
 228 }
 229
 230 void
 231 PortMatrix::vscroll_changed ()
 232 {
 233         _body->set_yoffset (_vscroll.get_adjustment()->get_value());
 234 }
 235
 236 void
 237 PortMatrix::setup_scrollbars ()
 238 {
 239         Adjustment* a = _hscroll.get_adjustment ();
 240         a->set_lower (0);
 241         a->set_upper (_body->full_scroll_width());
 242         a->set_page_size (_body->alloc_scroll_width());
 243         a->set_step_increment (32);
 244         a->set_page_increment (128);
 245
 246         a = _vscroll.get_adjustment ();
 247         a->set_lower (0);
 248         a->set_upper (_body->full_scroll_height());
 249         a->set_page_size (_body->alloc_scroll_height());
 250         a->set_step_increment (32);
 251         a->set_page_increment (128);
 252 }
 253
 254 /** Disassociate all of our ports from each other */
 255 void
 256 PortMatrix::disassociate_all ()
 257 {
 258         PortGroup::BundleList a = _ports[0].bundles ();
 259         PortGroup::BundleList b = _ports[1].bundles ();
 260
 261         for (PortGroup::BundleList::iterator i = a.begin(); i != a.end(); ++i) {
 262                 for (uint32_t j = 0; j < (*i)->bundle->nchannels().n_total(); ++j) {
 263                         for (PortGroup::BundleList::iterator k = b.begin(); k != b.end(); ++k) {
 264                                 for (uint32_t l = 0; l < (*k)->bundle->nchannels().n_total(); ++l) {
 265
 266                                         if (!should_show ((*i)->bundle->channel_type(j)) || !should_show ((*k)->bundle->channel_type(l))) {
 267                                                 continue;
 268                                         }
 269
 270                                         BundleChannel c[2] = {
 271                                                 BundleChannel ((*i)->bundle, j),
 272                                                 BundleChannel ((*k)->bundle, l)
 273                                                         };
 274
 275                                         if (get_state (c) == PortMatrixNode::ASSOCIATED) {
 276                                                 set_state (c, false);
 277                                         }
 278
 279                                 }
 280                         }
 281                 }
 282         }
 283
 284         _body->rebuild_and_draw_grid ();
 285 }
 286
 287 /* Decide how to arrange the components of the matrix */
 288 void
 289 PortMatrix::select_arrangement ()
 290 {
 291         uint32_t const N[2] = {
 292                 count_of_our_type_min_1 (_ports[0].total_channels()),
 293                 count_of_our_type_min_1 (_ports[1].total_channels())
 294         };
 295
 296         /* XXX: shirley there's an easier way than this */
 297
 298         if (_vspacer.get_parent()) {
 299                 _vbox.remove (_vspacer);
 300         }
 301
 302         if (_vnotebook.get_parent()) {
 303                 _vbox.remove (_vnotebook);
 304         }
 305
 306         if (_vlabel.get_parent()) {
 307                 _vbox.remove (_vlabel);
 308         }
 309
 310         /* The list with the most channels goes on left or right, so that the most channel
 311            names are printed horizontally and hence more readable.  However we also
 312            maintain notional `signal flow' vaguely from left to right.  Subclasses
 313            should choose where to put ports based on signal flowing from _ports[0]
 314            to _ports[1] */
 315
 316         if (N[0] > N[1]) {
 317
 318                 _row_index = 0;
 319                 _column_index = 1;
 320                 _arrangement = LEFT_TO_BOTTOM;
 321                 _vlabel.set_label (_("<b>Sources</b>"));
 322                 _hlabel.set_label (_("<b>Destinations</b>"));
 323                 _vlabel.set_angle (90);
 324
 325                 _vbox.pack_end (_vlabel, false, false);
 326                 _vbox.pack_end (_vnotebook, false, false);
 327                 _vbox.pack_end (_vspacer, true, true);
 328
 329                 attach (*_body, 2, 3, 1, 2, FILL | EXPAND, FILL | EXPAND);
 330                 attach (_vscroll, 3, 4, 1, 2, SHRINK);
 331                 attach (_hscroll, 2, 3, 3, 4, FILL | EXPAND, SHRINK);
 332                 attach (_vbox, 1, 2, 1, 2, SHRINK);
 333                 attach (_hbox, 2, 3, 2, 3, FILL | EXPAND, SHRINK);
 334
 335         } else {
 336
 337                 _row_index = 1;
 338                 _column_index = 0;
 339                 _arrangement = TOP_TO_RIGHT;
 340                 _hlabel.set_label (_("<b>Sources</b>"));
 341                 _vlabel.set_label (_("<b>Destinations</b>"));
 342                 _vlabel.set_angle (-90);
 343
 344                 _vbox.pack_end (_vspacer, true, true);
 345                 _vbox.pack_end (_vnotebook, false, false);
 346                 _vbox.pack_end (_vlabel, false, false);
 347
 348                 attach (*_body, 1, 2, 2, 3, FILL | EXPAND, FILL | EXPAND);
 349                 attach (_vscroll, 3, 4, 2, 3, SHRINK);
 350                 attach (_hscroll, 1, 2, 3, 4, FILL | EXPAND, SHRINK);
 351                 attach (_vbox, 2, 3, 2, 3, SHRINK);
 352                 attach (_hbox, 1, 2, 1, 2, FILL | EXPAND, SHRINK);
 353         }
 354 }
 355
 356 /** @return columns list */
 357 PortGroupList const *
 358 PortMatrix::columns () const
 359 {
 360         return &_ports[_column_index];
 361 }
 362
 363 boost::shared_ptr<const PortGroup>
 364 PortMatrix::visible_columns () const
 365 {
 366         return visible_ports (_column_index);
 367 }
 368
 369 /* @return rows list */
 370 PortGroupList const *
 371 PortMatrix::rows () const
 372 {
 373         return &_ports[_row_index];
 374 }
 375
 376 boost::shared_ptr<const PortGroup>
 377 PortMatrix::visible_rows () const
 378 {
 379         return visible_ports (_row_index);
 380 }
 381
 382 void
 383 PortMatrix::popup_menu (BundleChannel column, BundleChannel row, uint32_t t)
 384 {
 385         using namespace Menu_Helpers;
 386
 387         delete _menu;
 388
 389         _menu = new Menu;
 390         _menu->set_name ("ArdourContextMenu");
 391
 392         MenuList& items = _menu->items ();
 393
 394         BundleChannel bc[2];
 395         bc[_column_index] = column;
 396         bc[_row_index] = row;
 397
 398         char buf [64];
 399         bool need_separator = false;
 400
 401         for (int dim = 0; dim < 2; ++dim) {
 402
 403                 if (bc[dim].bundle) {
 404
 405                         Menu* m = manage (new Menu);
 406                         MenuList& sub = m->items ();
 407
 408                         boost::weak_ptr<Bundle> w (bc[dim].bundle);
 409
 410                         /* Start off with options for the `natural' port type */
 411                         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
 412                                 if (should_show (*i)) {
 413                                         snprintf (buf, sizeof (buf), _("Add %s %s"), (*i).to_i18n_string(), channel_noun().c_str());
 414                                         sub.push_back (MenuElem (buf, sigc::bind (sigc::mem_fun (*this, &PortMatrix::add_channel_proxy), w, *i)));
 415                                 }
 416                         }
 417
 418                         /* Now add other ones */
 419                         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
 420                                 if (!should_show (*i)) {
 421                                         snprintf (buf, sizeof (buf), _("Add %s %s"), (*i).to_i18n_string(), channel_noun().c_str());
 422                                         sub.push_back (MenuElem (buf, sigc::bind (sigc::mem_fun (*this, &PortMatrix::add_channel_proxy), w, *i)));
 423                                 }
 424                         }
 425
 426                         if (can_rename_channels (bc[dim].bundle)) {
 427                                 snprintf (
 428                                         buf, sizeof (buf), _("Rename '%s'..."),
 429                                         escape_underscores (bc[dim].bundle->channel_name (bc[dim].channel)).c_str()
 430                                         );
 431                                 sub.push_back (
 432                                         MenuElem (
 433                                                 buf,
 434                                                 sigc::bind (sigc::mem_fun (*this, &PortMatrix::rename_channel_proxy), w, bc[dim].channel)
 435                                                 )
 436                                         );
 437                         }
 438
 439                         if (can_remove_channels (bc[dim].bundle)) {
 440                                 if (bc[dim].channel != -1) {
 441                                         add_remove_option (sub, w, bc[dim].channel);
 442                                 } else if (bc[dim].bundle->nchannels() != ARDOUR::ChanCount::ZERO) {
 443
 444                                         snprintf (buf, sizeof (buf), _("Remove all"));
 445                                         sub.push_back (
 446                                                 MenuElem (buf, sigc::bind (sigc::mem_fun (*this, &PortMatrix::remove_all_channels), w))
 447                                                 );
 448
 449                                         if (bc[dim].bundle->nchannels().n_total() > 1) {
 450                                                 for (uint32_t i = 0; i < bc[dim].bundle->nchannels().n_total(); ++i) {
 451                                                         if (should_show (bc[dim].bundle->channel_type(i))) {
 452                                                                 add_remove_option (sub, w, i);
 453                                                         }
 454                                                 }
 455                                         }
 456                                 }
 457                         }
 458
 459                         uint32_t c = count_of_our_type (bc[dim].bundle->nchannels ());
 460                         if ((_show_only_bundles && c > 0) || c == 1) {
 461                                 snprintf (buf, sizeof (buf), _("%s all"), disassociation_verb().c_str());
 462                                 sub.push_back (
 463                                         MenuElem (buf, sigc::bind (sigc::mem_fun (*this, &PortMatrix::disassociate_all_on_channel), w, bc[dim].channel, dim))
 464                                         );
 465
 466                         } else {
 467
 468                                 if (bc[dim].channel != -1) {
 469                                         add_disassociate_option (sub, w, dim, bc[dim].channel);
 470                                 } else if (count_of_our_type (bc[dim].bundle->nchannels()) != 0) {
 471                                         snprintf (buf, sizeof (buf), _("%s all"), disassociation_verb().c_str());
 472                                         sub.push_back (
 473                                                 MenuElem (buf, sigc::bind (sigc::mem_fun (*this, &PortMatrix::disassociate_all_on_bundle), w, dim))
 474                                                 );
 475
 476                                         for (uint32_t i = 0; i < bc[dim].bundle->nchannels().n_total(); ++i) {
 477                                                 if (should_show (bc[dim].bundle->channel_type(i))) {
 478                                                         add_disassociate_option (sub, w, dim, i);
 479                                                 }
 480                                         }
 481                                 }
 482                         }
 483
 484                         items.push_back (MenuElem (escape_underscores (bc[dim].bundle->name()).c_str(), *m));
 485                         need_separator = true;
 486                 }
 487
 488         }
 489
 490         if (need_separator) {
 491                 items.push_back (SeparatorElem ());
 492         }
 493
 494         items.push_back (MenuElem (_("Rescan"), sigc::mem_fun (*this, &PortMatrix::setup_all_ports)));
 495         items.push_back (CheckMenuElem (_("Show individual ports"), sigc::mem_fun (*this, &PortMatrix::toggle_show_only_bundles)));
 496         CheckMenuItem* i = dynamic_cast<CheckMenuItem*> (&items.back());
 497         _inhibit_toggle_show_only_bundles = true;
 498         i->set_active (!_show_only_bundles);
 499         _inhibit_toggle_show_only_bundles = false;
 500
 501         _menu->popup (1, t);
 502 }
 503
 504 void
 505 PortMatrix::remove_channel_proxy (boost::weak_ptr<Bundle> b, uint32_t c)
 506 {
 507         boost::shared_ptr<Bundle> sb = b.lock ();
 508         if (!sb) {
 509                 return;
 510         }
 511
 512         remove_channel (BundleChannel (sb, c));
 513
 514 }
 515
 516 void
 517 PortMatrix::rename_channel_proxy (boost::weak_ptr<Bundle> b, uint32_t c)
 518 {
 519         boost::shared_ptr<Bundle> sb = b.lock ();
 520         if (!sb) {
 521                 return;
 522         }
 523
 524         rename_channel (BundleChannel (sb, c));
 525 }
 526
 527 void
 528 PortMatrix::disassociate_all_on_bundle (boost::weak_ptr<Bundle> bundle, int dim)
 529 {
 530         boost::shared_ptr<Bundle> sb = bundle.lock ();
 531         if (!sb) {
 532                 return;
 533         }
 534
 535         for (uint32_t i = 0; i < sb->nchannels().n_total(); ++i) {
 536                 if (should_show (sb->channel_type(i))) {
 537                         disassociate_all_on_channel (bundle, i, dim);
 538                 }
 539         }
 540 }
 541
 542 void
 543 PortMatrix::disassociate_all_on_channel (boost::weak_ptr<Bundle> bundle, uint32_t channel, int dim)
 544 {
 545         boost::shared_ptr<Bundle> sb = bundle.lock ();
 546         if (!sb) {
 547                 return;
 548         }
 549
 550         PortGroup::BundleList a = _ports[1-dim].bundles ();
 551
 552         for (PortGroup::BundleList::iterator i = a.begin(); i != a.end(); ++i) {
 553                 for (uint32_t j = 0; j < (*i)->bundle->nchannels().n_total(); ++j) {
 554
 555                         if (should_show ((*i)->bundle->channel_type(j))) {
 556                                 continue;
 557                         }
 558
 559                         BundleChannel c[2];
 560                         c[dim] = BundleChannel (sb, channel);
 561                         c[1-dim] = BundleChannel ((*i)->bundle, j);
 562
 563                         if (get_state (c) == PortMatrixNode::ASSOCIATED) {
 564                                 set_state (c, false);
 565                         }
 566                 }
 567         }
 568
 569         _body->rebuild_and_draw_grid ();
 570 }
 571
 572 void
 573 PortMatrix::setup_global_ports ()
 574 {
 575         ENSURE_GUI_THREAD (*this, &PortMatrix::setup_global_ports)
 576
 577         for (int i = 0; i < 2; ++i) {
 578                 if (list_is_global (i)) {
 579                         setup_ports (i);
 580                 }
 581         }
 582 }
 583
 584 void
 585 PortMatrix::setup_global_ports_proxy ()
 586 {
 587         /* Avoid a deadlock by calling this in an idle handler: see IOSelector::io_changed_proxy
 588            for a discussion.
 589         */
 590
 591         Glib::signal_idle().connect_once (sigc::mem_fun (*this, &PortMatrix::setup_global_ports));
 592 }
 593
 594 void
 595 PortMatrix::setup_all_ports ()
 596 {
 597         if (_session->deletion_in_progress()) {
 598                 return;
 599         }
 600
 601         ENSURE_GUI_THREAD (*this, &PortMatrix::setup_all_ports)
 602
 603         setup_ports (0);
 604         setup_ports (1);
 605 }
 606
 607 void
 608 PortMatrix::toggle_show_only_bundles ()
 609 {
 610         if (_inhibit_toggle_show_only_bundles) {
 611                 return;
 612         }
 613
 614         _show_only_bundles = !_show_only_bundles;
 615
 616         setup ();
 617 }
 618
 619 pair<uint32_t, uint32_t>
 620 PortMatrix::max_size () const
 621 {
 622         pair<uint32_t, uint32_t> m = _body->max_size ();
 623
 624         m.first += _vscroll.get_width () + _vbox.get_width () + 4;
 625         m.second += _hscroll.get_height () + _hbox.get_height () + 4;
 626
 627         return m;
 628 }
 629
 630 bool
 631 PortMatrix::on_scroll_event (GdkEventScroll* ev)
 632 {
 633         double const h = _hscroll.get_value ();
 634         double const v = _vscroll.get_value ();
 635
 636         switch (ev->direction) {
 637         case GDK_SCROLL_UP:
 638                 _vscroll.set_value (v - PortMatrixComponent::grid_spacing ());
 639                 break;
 640         case GDK_SCROLL_DOWN:
 641                 _vscroll.set_value (v + PortMatrixComponent::grid_spacing ());
 642                 break;
 643         case GDK_SCROLL_LEFT:
 644                 _hscroll.set_value (h - PortMatrixComponent::grid_spacing ());
 645                 break;
 646         case GDK_SCROLL_RIGHT:
 647                 _hscroll.set_value (h + PortMatrixComponent::grid_spacing ());
 648                 break;
 649         }
 650
 651         return true;
 652 }
 653
 654 boost::shared_ptr<IO>
 655 PortMatrix::io_from_bundle (boost::shared_ptr<Bundle> b) const
 656 {
 657         boost::shared_ptr<IO> io = _ports[0].io_from_bundle (b);
 658         if (!io) {
 659                 io = _ports[1].io_from_bundle (b);
 660         }
 661
 662         return io;
 663 }
 664
 665 bool
 666 PortMatrix::can_add_channel (boost::shared_ptr<Bundle> b) const
 667 {
 668         return io_from_bundle (b);
 669 }
 670
 671 void
 672 PortMatrix::add_channel (boost::shared_ptr<Bundle> b, DataType t)
 673 {
 674         boost::shared_ptr<IO> io = io_from_bundle (b);
 675
 676         if (io) {
 677                 io->add_port ("", this, t);
 678         }
 679 }
 680
 681 bool
 682 PortMatrix::can_remove_channels (boost::shared_ptr<Bundle> b) const
 683 {
 684         return io_from_bundle (b);
 685 }
 686
 687 void
 688 PortMatrix::remove_channel (ARDOUR::BundleChannel b)
 689 {
 690         boost::shared_ptr<IO> io = io_from_bundle (b.bundle);
 691
 692         if (io) {
 693                 Port* p = io->nth (b.channel);
 694                 if (p) {
 695                         int const r = io->remove_port (p, this);
 696                         if (r == -1) {
 697                                 ArdourDialog d (_("Port removal not allowed"));
 698                                 Label l (_("This port cannot be removed, as the first plugin in the track or buss cannot accept the new number of inputs."));
 699                                 d.get_vbox()->pack_start (l);
 700                                 d.add_button (Stock::OK, RESPONSE_ACCEPT);
 701                                 d.set_modal (true);
 702                                 d.show_all ();
 703                                 d.run ();
 704                         }
 705                 }
 706         }
 707 }
 708
 709 void
 710 PortMatrix::remove_all_channels (boost::weak_ptr<Bundle> w)
 711 {
 712         boost::shared_ptr<Bundle> b = w.lock ();
 713         if (!b) {
 714                 return;
 715         }
 716
 717         /* Remove channels backwards so that we don't renumber channels
 718            that we are about to remove.
 719         */
 720         for (int i = (b->nchannels().n_total() - 1); i >= 0; --i) {
 721                 if (should_show (b->channel_type(i))) {
 722                         remove_channel (ARDOUR::BundleChannel (b, i));
 723                 }
 724         }
 725 }
 726
 727 void
 728 PortMatrix::add_channel_proxy (boost::weak_ptr<Bundle> w, DataType t)
 729 {
 730         boost::shared_ptr<Bundle> b = w.lock ();
 731         if (!b) {
 732                 return;
 733         }
 734
 735         add_channel (b, t);
 736 }
 737
 738 void
 739 PortMatrix::setup_notebooks ()
 740 {
 741         int const h_current_page = _hnotebook.get_current_page ();
 742         int const v_current_page = _vnotebook.get_current_page ();
 743
 744         /* for some reason best known to GTK, erroneous switch_page signals seem to be generated
 745            when adding or removing pages to or from notebooks, so ignore them */
 746
 747         _ignore_notebook_page_selected = true;
 748
 749         remove_notebook_pages (_hnotebook);
 750         remove_notebook_pages (_vnotebook);
 751
 752         for (PortGroupList::List::const_iterator i = _ports[_row_index].begin(); i != _ports[_row_index].end(); ++i) {
 753                 HBox* dummy = manage (new HBox);
 754                 dummy->show ();
 755                 Label* label = manage (new Label ((*i)->name));
 756                 label->set_angle (_arrangement == LEFT_TO_BOTTOM ? 90 : -90);
 757                 label->show ();
 758                 _vnotebook.prepend_page (*dummy, *label);
 759         }
 760
 761         for (PortGroupList::List::const_iterator i = _ports[_column_index].begin(); i != _ports[_column_index].end(); ++i) {
 762                 HBox* dummy = manage (new HBox);
 763                 dummy->show ();
 764                 _hnotebook.append_page (*dummy, (*i)->name);
 765         }
 766
 767         _ignore_notebook_page_selected = false;
 768
 769         if (_arrangement == TOP_TO_RIGHT) {
 770                 _vnotebook.set_tab_pos (POS_RIGHT);
 771                 _hnotebook.set_tab_pos (POS_TOP);
 772         } else {
 773                 _vnotebook.set_tab_pos (POS_LEFT);
 774                 _hnotebook.set_tab_pos (POS_BOTTOM);
 775         }
 776
 777         if (h_current_page != -1 && _hnotebook.get_n_pages() > h_current_page) {
 778                 _hnotebook.set_current_page (h_current_page);
 779         } else {
 780                 _hnotebook.set_current_page (0);
 781         }
 782
 783         if (v_current_page != -1 && _vnotebook.get_n_pages() > v_current_page) {
 784                 _vnotebook.set_current_page (v_current_page);
 785         } else {
 786                 _vnotebook.set_current_page (0);
 787         }
 788
 789         if (_hnotebook.get_n_pages() <= 1) {
 790                 _hbox.hide ();
 791         } else {
 792                 _hbox.show ();
 793         }
 794
 795         if (_vnotebook.get_n_pages() <= 1) {
 796                 _vbox.hide ();
 797         } else {
 798                 _vbox.show ();
 799         }
 800 }
 801
 802 void
 803 PortMatrix::remove_notebook_pages (Notebook& n)
 804 {
 805         int const N = n.get_n_pages ();
 806
 807         for (int i = 0; i < N; ++i) {
 808                 n.remove_page ();
 809         }
 810 }
 811
 812 void
 813 PortMatrix::notebook_page_selected (GtkNotebookPage *, guint)
 814 {
 815         if (_ignore_notebook_page_selected) {
 816                 return;
 817         }
 818
 819         _body->setup ();
 820         setup_scrollbars ();
 821         queue_draw ();
 822 }
 823
 824 void
 825 PortMatrix::session_going_away ()
 826 {
 827         _session = 0;
 828 }
 829
 830 void
 831 PortMatrix::body_dimensions_changed ()
 832 {
 833         _hspacer.set_size_request (_body->column_labels_border_x (), -1);
 834         if (_arrangement == TOP_TO_RIGHT) {
 835                 _vspacer.set_size_request (-1, _body->column_labels_height ());
 836                 _vspacer.show ();
 837         } else {
 838                 _vspacer.hide ();
 839         }
 840
 841         int curr_width;
 842         int curr_height;
 843         _parent->get_size (curr_width, curr_height);
 844
 845         pair<uint32_t, uint32_t> m = max_size ();
 846
 847         /* Don't shrink the window */
 848         m.first = max (int (m.first), curr_width);
 849         m.second = max (int (m.second), curr_height);
 850
 851         resize_window_to_proportion_of_monitor (_parent, m.first, m.second);
 852 }
 853
 854 /** @return The PortGroup that is currently visible (ie selected by
 855  *  the notebook) along a given axis.
 856  */
 857 boost::shared_ptr<const PortGroup>
 858 PortMatrix::visible_ports (int d) const
 859 {
 860         PortGroupList const & p = _ports[d];
 861         PortGroupList::List::const_iterator j = p.begin ();
 862
 863         int n = 0;
 864         if (d == _row_index) {
 865                 n = p.size() - _vnotebook.get_current_page () - 1;
 866         } else {
 867                 n = _hnotebook.get_current_page ();
 868         }
 869
 870         int i = 0;
 871         while (i != int (n) && j != p.end ()) {
 872                 ++i;
 873                 ++j;
 874         }
 875
 876         if (j == p.end()) {
 877                 return boost::shared_ptr<const PortGroup> ();
 878         }
 879
 880         return *j;
 881 }
 882
 883 void
 884 PortMatrix::add_remove_option (Menu_Helpers::MenuList& m, boost::weak_ptr<Bundle> w, int c)
 885 {
 886         using namespace Menu_Helpers;
 887
 888         boost::shared_ptr<Bundle> b = w.lock ();
 889         if (!b) {
 890                 return;
 891         }
 892
 893         char buf [64];
 894         snprintf (buf, sizeof (buf), _("Remove '%s'"), escape_underscores (b->channel_name (c)).c_str());
 895         m.push_back (MenuElem (buf, sigc::bind (sigc::mem_fun (*this, &PortMatrix::remove_channel_proxy), w, c)));
 896 }
 897
 898 void
 899 PortMatrix::add_disassociate_option (Menu_Helpers::MenuList& m, boost::weak_ptr<Bundle> w, int d, int c)
 900 {
 901         using namespace Menu_Helpers;
 902
 903         boost::shared_ptr<Bundle> b = w.lock ();
 904         if (!b) {
 905                 return;
 906         }
 907
 908         char buf [64];
 909         snprintf (buf, sizeof (buf), _("%s all from '%s'"), disassociation_verb().c_str(), escape_underscores (b->channel_name (c)).c_str());
 910         m.push_back (MenuElem (buf, sigc::bind (sigc::mem_fun (*this, &PortMatrix::disassociate_all_on_channel), w, c, d)));
 911 }
 912
 913 void
 914 PortMatrix::port_connected_or_disconnected ()
 915 {
 916         _body->rebuild_and_draw_grid ();
 917 }
 918
 919 string
 920 PortMatrix::channel_noun () const
 921 {
 922         return _("channel");
 923 }
 924
 925 /** @return true if this matrix should show bundles / ports of type \t */
 926 bool
 927 PortMatrix::should_show (DataType t) const
 928 {
 929         return (_type == DataType::NIL || t == _type);
 930 }
 931
 932 uint32_t
 933 PortMatrix::count_of_our_type (ChanCount c) const
 934 {
 935         if (_type == DataType::NIL) {
 936                 return c.n_total ();
 937         }
 938
 939         return c.get (_type);
 940 }
 941
 942 /** @return The number of ports of our type in the given channel count,
 943  *  but returning 1 if there are no ports.
 944  */
 945 uint32_t
 946 PortMatrix::count_of_our_type_min_1 (ChanCount c) const
 947 {
 948         uint32_t n = count_of_our_type (c);
 949         if (n == 0) {
 950                 n = 1;
 951         }
 952
 953         return n;
 954 }
 955
 956 PortMatrixNode::State
 957 PortMatrix::get_association (PortMatrixNode node) const
 958 {
 959         if (show_only_bundles ()) {
 960
 961                 bool have_off_diagonal_association = false;
 962                 bool have_diagonal_association = false;
 963                 bool have_diagonal_not_association = false;
 964
 965                 for (uint32_t i = 0; i < node.row.bundle->nchannels().n_total(); ++i) {
 966
 967                         for (uint32_t j = 0; j < node.column.bundle->nchannels().n_total(); ++j) {
 968
 969                                 if (!should_show (node.row.bundle->channel_type(i)) || !should_show (node.column.bundle->channel_type(j))) {
 970                                         continue;
 971                                 }
 972
 973                                 ARDOUR::BundleChannel c[2];
 974                                 c[row_index()] = ARDOUR::BundleChannel (node.row.bundle, i);
 975                                 c[column_index()] = ARDOUR::BundleChannel (node.column.bundle, j);
 976
 977                                 PortMatrixNode::State const s = get_state (c);
 978
 979                                 switch (s) {
 980                                 case PortMatrixNode::ASSOCIATED:
 981                                         if (i == j) {
 982                                                 have_diagonal_association = true;
 983                                         } else {
 984                                                 have_off_diagonal_association = true;
 985                                         }
 986                                         break;
 987
 988                                 case PortMatrixNode::NOT_ASSOCIATED:
 989                                         if (i == j) {
 990                                                 have_diagonal_not_association = true;
 991                                         }
 992                                         break;
 993
 994                                 default:
 995                                         break;
 996                                 }
 997                         }
 998                 }
 999
1000                 if (have_diagonal_association && !have_off_diagonal_association && !have_diagonal_not_association) {
1001                         return PortMatrixNode::ASSOCIATED;
1002                 } else if (!have_diagonal_association && !have_off_diagonal_association) {
1003                         return PortMatrixNode::NOT_ASSOCIATED;
1004                 }
1005
1006                 return PortMatrixNode::PARTIAL;
1007
1008         } else {
1009
1010                 ARDOUR::BundleChannel c[2];
1011                 c[column_index()] = node.column;
1012                 c[row_index()] = node.row;
1013                 return get_state (c);
1014
1015         }
1016
1017         /* NOTREACHED */
1018         return PortMatrixNode::NOT_ASSOCIATED;
1019 }
1020
1021 /** @return true if b is a non-zero pointer and the bundle it points to has some channels */
1022 bool
1023 PortMatrix::bundle_with_channels (boost::shared_ptr<ARDOUR::Bundle> b)
1024 {
1025         return b && b->nchannels() != ARDOUR::ChanCount::ZERO;
1026 }