gtk2_ardour/time_axis_view.cc

   1 /*
   2     Copyright (C) 2000 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     $Id$
  19 */
  20
  21 #include <cstdlib>
  22 #include <cmath>
  23 #include <algorithm>
  24 #include <string>
  25 #include <list>
  26
  27 #include <libgnomecanvasmm/libgnomecanvasmm.h>
  28 #include <libgnomecanvasmm/canvas.h>
  29 #include <libgnomecanvasmm/item.h>
  30
  31 #include <pbd/error.h>
  32
  33 #include <gtkmm2ext/utils.h>
  34 #include <gtkmm2ext/selector.h>
  35 #include <gtkmm2ext/stop_signal.h>
  36
  37 #include <ardour/session.h>
  38 #include <ardour/utils.h>
  39 #include <ardour/ladspa_plugin.h>
  40 #include <ardour/insert.h>
  41 #include <ardour/location.h>
  42
  43 #include "ardour_ui.h"
  44 #include "public_editor.h"
  45 #include "time_axis_view.h"
  46 #include "simplerect.h"
  47 #include "selection.h"
  48 #include "keyboard.h"
  49 #include "rgb_macros.h"
  50 #include "utils.h"
  51
  52 #include "i18n.h"
  53
  54 using namespace Gtk;
  55 using namespace sigc;
  56 using namespace ARDOUR;
  57 using namespace Editing;
  58 using namespace ArdourCanvas;
  59
  60 const double trim_handle_size = 6.0; /* pixels */
  61
  62 TimeAxisView::TimeAxisView (ARDOUR::Session& sess, PublicEditor& ed, TimeAxisView* rent, Canvas& canvas)
  63         : AxisView (sess),
  64           editor (ed),
  65           controls_table (2, 9)
  66 {
  67         canvas_display = new Group (*canvas.root(), 0.0, 0.0);
  68
  69         selection_group = new Group (*canvas_display);
  70         selection_group->hide();
  71
  72         control_parent = 0;
  73         display_menu = 0;
  74         size_menu = 0;
  75         _marked_for_display = false;
  76         _hidden = false;
  77         height = 0;
  78         effective_height = 0;
  79         parent = rent;
  80         _has_state = false;
  81         last_name_entry_key_press_event = 0;
  82
  83         /*
  84           Create the standard LHS Controls
  85           We create the top-level container and name add the name label here,
  86           subclasses can add to the layout as required
  87         */
  88
  89         name_entry.set_name ("EditorTrackNameDisplay");
  90         name_entry.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_release));
  91         name_entry.signal_button_press_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_press));
  92         name_entry.signal_key_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_key_release));
  93         name_entry.signal_activate().connect (mem_fun(*this, &TimeAxisView::name_entry_activated));
  94         name_entry.signal_focus_in_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_in));
  95         name_entry.signal_focus_out_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_out));
  96         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
  97
  98         name_label.set_name ("TrackLabel");
  99         name_label.set_alignment (0.0, 0.5);
 100
 101         // name_hbox.set_border_width (2);
 102         // name_hbox.set_spacing (5);
 103
 104         /* typically, either name_label OR name_entry are visible,
 105            but not both. its up to derived classes to show/hide them as they
 106            wish.
 107         */
 108
 109         name_hbox.pack_start (name_label, true, true);
 110         name_hbox.pack_start (name_entry, true, true);
 111         name_hbox.show ();
 112
 113         controls_table.set_border_width (2);
 114         controls_table.set_row_spacings (0);
 115         controls_table.set_col_spacings (0);
 116         controls_table.set_homogeneous (true);
 117         controls_table.show ();
 118
 119         controls_table.attach (name_hbox, 0, 5, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);
 120
 121         controls_table.show ();
 122
 123         controls_vbox.pack_start (controls_table, false, false);
 124         controls_vbox.show ();
 125
 126         controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 127         controls_ebox.add (controls_vbox);
 128         controls_ebox.set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 129         controls_ebox.set_flags (Gtk::CAN_FOCUS);
 130
 131         controls_ebox.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 132
 133         controls_lhs_pad.set_name ("TimeAxisViewControlsPadding");
 134         controls_hbox.pack_start (controls_lhs_pad,false,false);
 135         controls_hbox.pack_start (controls_ebox,true,true);
 136         controls_hbox.show ();
 137
 138         controls_frame.add (controls_hbox);
 139         controls_frame.set_name ("TimeAxisViewControlsBaseUnselected");
 140         controls_frame.set_shadow_type (Gtk::SHADOW_OUT);
 141 }
 142
 143 TimeAxisView::~TimeAxisView()
 144 {
 145         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 146                 delete *i;
 147         }
 148
 149         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 150                 delete (*i)->rect;
 151                 delete (*i)->start_trim;
 152                 delete (*i)->end_trim;
 153
 154         }
 155
 156         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 157                 delete (*i)->rect;
 158                 delete (*i)->start_trim;
 159                 delete (*i)->end_trim;
 160         }
 161
 162         if (selection_group) {
 163                 delete selection_group;
 164                 selection_group = 0;
 165         }
 166
 167         if (canvas_display) {
 168                 delete canvas_display;
 169                 canvas_display = 0;
 170         }
 171
 172         if (display_menu) {
 173                 delete display_menu;
 174                 display_menu = 0;
 175         }
 176
 177         if (size_menu) {
 178                 delete size_menu;
 179                 size_menu = 0;
 180         }
 181 }
 182
 183 guint32
 184 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 185 {
 186         gdouble ix1, ix2, iy1, iy2;
 187         effective_height = 0;
 188
 189         if (control_parent) {
 190                 control_parent->reorder_child (controls_frame, nth);
 191         } else {
 192                 control_parent = parent;
 193                 parent->pack_start (controls_frame, false, false);
 194                 parent->reorder_child (controls_frame, nth);
 195         }
 196
 197         controls_frame.show ();
 198         controls_ebox.show ();
 199
 200         /* the coordinates used here are in the system of the
 201            item's parent ...
 202         */
 203
 204         canvas_display->get_bounds (ix1, iy1, ix2, iy2);
 205         Group* pg = canvas_display->property_parent();
 206         pg->i2w (ix1, iy1);
 207
 208         if (iy1 < 0) {
 209                 iy1 = 0;
 210         }
 211
 212         canvas_display->move (0.0, y - iy1);
 213         canvas_display->show();/* XXX not necessary */
 214         y_position = y;
 215         order = nth;
 216         _hidden = false;
 217
 218         effective_height = height;
 219
 220         /* now show children */
 221
 222         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 223
 224                 if ((*i)->marked_for_display()) {
 225                         (*i)->canvas_display->show();
 226                 }
 227
 228                 if (canvas_item_visible ((*i)->canvas_display)) {
 229                         ++nth;
 230                         effective_height += (*i)->show_at (y + effective_height, nth, parent);
 231                 }
 232         }
 233
 234         return effective_height;
 235 }
 236
 237 gint
 238 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 239 {
 240         switch (ev->button) {
 241         case 1:
 242                 selection_click (ev);
 243                 break;
 244
 245         case 3:
 246                 popup_display_menu (ev->time);
 247                 break;
 248
 249         case 4:
 250                 if (Keyboard::no_modifier_keys_pressed (ev)) {
 251                         editor.scroll_tracks_up_line ();
 252                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 253                         step_height (true);
 254                 }
 255                 break;
 256
 257         case 5:
 258                 if (Keyboard::no_modifier_keys_pressed (ev)) {
 259                         editor.scroll_tracks_down_line ();
 260                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 261                         step_height (false);
 262                 }
 263                 break;
 264
 265
 266         }
 267
 268         return TRUE;
 269 }
 270
 271 void
 272 TimeAxisView::selection_click (GdkEventButton* ev)
 273 {
 274         if (Keyboard::modifier_state_contains (ev->state, Keyboard::Shift)) {
 275
 276                 if (editor.get_selection().selected (this)) {
 277                         editor.get_selection().remove (this);
 278                 } else {
 279                         editor.get_selection().add (this);
 280                 }
 281
 282         } else {
 283
 284                 editor.get_selection().set (this);
 285         }
 286 }
 287
 288 void
 289 TimeAxisView::hide ()
 290 {
 291         if (_hidden) {
 292                 return;
 293         }
 294
 295         canvas_display->hide();
 296         controls_frame.hide ();
 297
 298         if (control_parent) {
 299                 control_parent->remove (controls_frame);
 300                 control_parent = 0;
 301         }
 302
 303         y_position = -1;
 304         _hidden = true;
 305
 306         /* now hide children */
 307
 308         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 309                 (*i)->hide ();
 310         }
 311
 312         Hiding ();
 313 }
 314
 315 void
 316 TimeAxisView::step_height (bool bigger)
 317 {
 318         switch (height) {
 319         case Largest:
 320                 if (!bigger) set_height (Large);
 321                 break;
 322         case Large:
 323                 if (bigger) set_height (Largest);
 324                 else set_height (Larger);
 325                 break;
 326         case Larger:
 327                 if (bigger) set_height (Large);
 328                 else set_height (Normal);
 329                 break;
 330         case Normal:
 331                 if (bigger) set_height (Larger);
 332                 else set_height (Smaller);
 333                 break;
 334         case Smaller:
 335                 if (bigger) set_height (Normal);
 336                 else set_height (Small);
 337                 break;
 338         case Small:
 339                 if (bigger) set_height (Smaller);
 340                 break;
 341         }
 342 }
 343
 344
 345 void
 346 TimeAxisView::set_height (TrackHeight h)
 347 {
 348         height = (guint32) h;
 349         controls_frame.set_size_request (-1, height);
 350
 351         if (canvas_item_visible (selection_group)) {
 352                 /* resize the selection rect */
 353                 show_selection (editor.get_selection().time);
 354         }
 355
 356 //      for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 357 //              (*i)->set_height (h);
 358 //      }
 359
 360 }
 361
 362 bool
 363 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 364 {
 365         switch (ev->keyval) {
 366         case GDK_Tab:
 367         case GDK_Up:
 368         case GDK_Down:
 369                 name_entry_changed ();
 370                 return true;
 371
 372         default:
 373                 break;
 374         }
 375
 376 #ifdef TIMEOUT_NAME_EDIT
 377         /* adapt the timeout to reflect the user's typing speed */
 378
 379         guint32 name_entry_timeout;
 380
 381         if (last_name_entry_key_press_event) {
 382                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 383                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 384         } else {
 385                 /* start with a 1 second timeout */
 386                 name_entry_timeout = 1000;
 387         }
 388
 389         last_name_entry_key_press_event = ev->time;
 390
 391         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 392
 393         name_entry_key_timeout.disconnect();
 394         name_entry_key_timeout = Glib::signal_timeout().connect (mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 395 #endif
 396
 397         return false;
 398 }
 399
 400 bool
 401 TimeAxisView::name_entry_focus_in (GdkEventFocus* ev)
 402 {
 403         name_entry.select_region (0, -1);
 404         name_entry.set_name ("EditorActiveTrackNameDisplay");
 405         return false;
 406 }
 407
 408 bool
 409 TimeAxisView::name_entry_focus_out (GdkEventFocus* ev)
 410 {
 411         /* clean up */
 412
 413         last_name_entry_key_press_event = 0;
 414         name_entry_key_timeout.disconnect ();
 415         name_entry.set_name ("EditorTrackNameDisplay");
 416
 417         /* do the real stuff */
 418
 419         name_entry_changed ();
 420
 421         return false;
 422 }
 423
 424 bool
 425 TimeAxisView::name_entry_key_timed_out ()
 426 {
 427         name_entry_activated();
 428         return false;
 429 }
 430
 431 void
 432 TimeAxisView::name_entry_activated ()
 433 {
 434         controls_ebox.grab_focus();
 435 }
 436
 437 void
 438 TimeAxisView::name_entry_changed ()
 439 {
 440 }
 441
 442 bool
 443 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 444 {
 445         if (ev->button == 3) {
 446                 return true;
 447         }
 448         return false;
 449 }
 450
 451 bool
 452 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 453 {
 454         if (ev->button == 3) {
 455                 popup_display_menu (ev->time);
 456                 return true;
 457         }
 458         return false;
 459 }
 460
 461 void
 462 TimeAxisView::popup_display_menu (guint32 when)
 463 {
 464         if (display_menu == 0) {
 465                 build_display_menu ();
 466         }
 467         display_menu->popup (1, when);
 468 }
 469
 470 gint
 471 TimeAxisView::size_click (GdkEventButton *ev)
 472 {
 473         popup_size_menu (ev->time);
 474         return TRUE;
 475 }
 476
 477 void
 478 TimeAxisView::popup_size_menu (guint32 when)
 479 {
 480         if (size_menu == 0) {
 481                 build_size_menu ();
 482         }
 483         size_menu->popup (1, when);
 484 }
 485
 486 void
 487 TimeAxisView::set_selected (bool yn)
 488 {
 489         AxisView::set_selected (yn);
 490
 491         if (_selected) {
 492                 controls_ebox.set_name (controls_base_selected_name);
 493                 controls_frame.set_name (controls_base_selected_name);
 494
 495                 /* propagate any existing selection, if the mode is right */
 496
 497                 if (editor.current_mouse_mode() == Editing::MouseRange && !editor.get_selection().time.empty()) {
 498                         show_selection (editor.get_selection().time);
 499                 }
 500
 501         } else {
 502                 controls_ebox.set_name (controls_base_unselected_name);
 503                 controls_frame.set_name (controls_base_unselected_name);
 504
 505                 hide_selection ();
 506
 507                 /* children will be set for the yn=true case. but when deselecting
 508                    the editor only has a list of top-level trackviews, so we
 509                    have to do this here.
 510                 */
 511
 512                 for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 513                         (*i)->set_selected (false);
 514                 }
 515
 516
 517         }
 518 }
 519
 520 void
 521 TimeAxisView::build_size_menu ()
 522 {
 523         using namespace Menu_Helpers;
 524
 525         size_menu = new Menu;
 526         size_menu->set_name ("ArdourContextMenu");
 527         MenuList& items = size_menu->items();
 528
 529         items.push_back (MenuElem (_("Largest"), bind (mem_fun (*this, &TimeAxisView::set_height), Largest)));
 530         items.push_back (MenuElem (_("Large"), bind (mem_fun (*this, &TimeAxisView::set_height), Large)));
 531         items.push_back (MenuElem (_("Larger"), bind (mem_fun (*this, &TimeAxisView::set_height), Larger)));
 532         items.push_back (MenuElem (_("Normal"), bind (mem_fun (*this, &TimeAxisView::set_height), Normal)));
 533         items.push_back (MenuElem (_("Smaller"), bind (mem_fun (*this, &TimeAxisView::set_height), Smaller)));
 534         items.push_back (MenuElem (_("Small"), bind (mem_fun (*this, &TimeAxisView::set_height), Small)));
 535 }
 536
 537 void
 538 TimeAxisView::build_display_menu ()
 539 {
 540         using namespace Menu_Helpers;
 541
 542         display_menu = new Menu;
 543         display_menu->set_name ("ArdourContextMenu");
 544
 545         // Just let implementing classes define what goes into the manu
 546 }
 547
 548 void
 549 TimeAxisView::set_samples_per_unit (double spu)
 550 {
 551         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 552                 (*i)->set_samples_per_unit (spu);
 553         }
 554 }
 555
 556 void
 557 TimeAxisView::show_timestretch (jack_nframes_t start, jack_nframes_t end)
 558 {
 559         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 560                 (*i)->show_timestretch (start, end);
 561         }
 562 }
 563
 564 void
 565 TimeAxisView::hide_timestretch ()
 566 {
 567         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 568                 (*i)->hide_timestretch ();
 569         }
 570 }
 571
 572 void
 573 TimeAxisView::show_selection (TimeSelection& ts)
 574 {
 575         double x1;
 576         double x2;
 577         double y2;
 578         SelectionRect *rect;
 579
 580         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 581                 (*i)->show_selection (ts);
 582         }
 583
 584         if (canvas_item_visible (selection_group)) {
 585                 while (!used_selection_rects.empty()) {
 586                         free_selection_rects.push_front (used_selection_rects.front());
 587                         used_selection_rects.pop_front();
 588                         free_selection_rects.front()->rect->hide();
 589                         free_selection_rects.front()->start_trim->hide();
 590                         free_selection_rects.front()->end_trim->hide();
 591                 }
 592                 selection_group->hide();
 593         }
 594
 595         selection_group->show();
 596         selection_group->raise_to_top();
 597
 598         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 599                 jack_nframes_t start, end, cnt;
 600
 601                 start = (*i).start;
 602                 end = (*i).end;
 603                 cnt = end - start + 1;
 604
 605                 rect = get_selection_rect ((*i).id);
 606
 607                 x1 = start / editor.get_current_zoom();
 608                 x2 = (start + cnt - 1) / editor.get_current_zoom();
 609                 y2 = height;
 610
 611                 rect->rect->property_x1() = x1;
 612                 rect->rect->property_y1() = 1.0;
 613                 rect->rect->property_x2() = x2;
 614                 rect->rect->property_y2() = y2;
 615
 616                 // trim boxes are at the top for selections
 617
 618                 if (x2 > x1) {
 619                         rect->start_trim->property_x1() = x1;
 620                         rect->start_trim->property_y1() = 1.0;
 621                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 622                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 623
 624                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 625                         rect->end_trim->property_y1() = 1.0;
 626                         rect->end_trim->property_x2() = x2;
 627                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 628
 629                         rect->start_trim->show();
 630                         rect->end_trim->show();
 631                 } else {
 632                         rect->start_trim->hide();
 633                         rect->end_trim->hide();
 634                 }
 635
 636                 rect->rect->show ();
 637                 used_selection_rects.push_back (rect);
 638         }
 639 }
 640
 641 void
 642 TimeAxisView::reshow_selection (TimeSelection& ts)
 643 {
 644         show_selection (ts);
 645
 646         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 647                 (*i)->show_selection (ts);
 648         }
 649 }
 650
 651 void
 652 TimeAxisView::hide_selection ()
 653 {
 654         if (canvas_item_visible (selection_group)) {
 655                 while (!used_selection_rects.empty()) {
 656                         free_selection_rects.push_front (used_selection_rects.front());
 657                         used_selection_rects.pop_front();
 658                         free_selection_rects.front()->rect->hide();
 659                         free_selection_rects.front()->start_trim->hide();
 660                         free_selection_rects.front()->end_trim->hide();
 661                 }
 662                 selection_group->hide();
 663         }
 664
 665         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 666                 (*i)->hide_selection ();
 667         }
 668 }
 669
 670 void
 671 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 672 {
 673         /* find the selection rect this is for. we have the item corresponding to one
 674            of the trim handles.
 675          */
 676
 677         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 678                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 679
 680                         /* make one trim handle be "above" the other so that if they overlap,
 681                            the top one is the one last used.
 682                         */
 683
 684                         (*i)->rect->raise_to_top ();
 685                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 686                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 687
 688                         break;
 689                 }
 690         }
 691 }
 692
 693 SelectionRect *
 694 TimeAxisView::get_selection_rect (uint32_t id)
 695 {
 696         SelectionRect *rect;
 697
 698         /* check to see if we already have a visible rect for this particular selection ID */
 699
 700         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 701                 if ((*i)->id == id) {
 702                         return (*i);
 703                 }
 704         }
 705
 706         /* ditto for the free rect list */
 707
 708         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 709                 if ((*i)->id == id) {
 710                         free_selection_rects.erase (i);
 711                         return (*i);
 712                 }
 713         }
 714
 715         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 716
 717         if (free_selection_rects.empty()) {
 718
 719                 rect = new SelectionRect;
 720
 721                 rect->rect = new SimpleRect (*selection_group);
 722                 rect->rect->property_x1() = 0.0;
 723                 rect->rect->property_y1() = 0.0;
 724                 rect->rect->property_x2() = 0.0;
 725                 rect->rect->property_y2() = 0.0;
 726                 rect->rect->property_fill_color_rgba() = color_map[cSelectionRectFill];
 727                 rect->rect->property_outline_color_rgba() = color_map[cSelectionRectOutline];
 728
 729                 rect->start_trim = new SimpleRect (*selection_group);
 730                 rect->start_trim->property_x1() = 0.0;
 731                 rect->start_trim->property_x2() = 0.0;
 732                 rect->start_trim->property_fill_color_rgba() = color_map[cSelectionStartFill];
 733                 rect->start_trim->property_outline_color_rgba() = color_map[cSelectionStartOutline];
 734
 735                 rect->end_trim = new SimpleRect (*selection_group);
 736                 rect->end_trim->property_x1() = 0.0;
 737                 rect->end_trim->property_x2() = 0.0;
 738                 rect->end_trim->property_fill_color_rgba() = color_map[cSelectionEndFill];
 739                 rect->end_trim->property_outline_color_rgba() = color_map[cSelectionEndOutline];
 740
 741                 free_selection_rects.push_front (rect);
 742
 743                 rect->rect->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 744                 rect->start_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 745                 rect->end_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 746         }
 747
 748         rect = free_selection_rects.front();
 749         rect->id = id;
 750         free_selection_rects.pop_front();
 751         return rect;
 752 }
 753
 754 bool
 755 TimeAxisView::is_child (TimeAxisView* tav)
 756 {
 757         return find (children.begin(), children.end(), tav) != children.end();
 758 }
 759
 760 void
 761 TimeAxisView::add_child (TimeAxisView* child)
 762 {
 763         children.push_back (child);
 764 }
 765
 766 void
 767 TimeAxisView::remove_child (TimeAxisView* child)
 768 {
 769         vector<TimeAxisView*>::iterator i;
 770
 771         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 772                 children.erase (i);
 773         }
 774 }
 775
 776 void
 777 TimeAxisView::get_selectables (jack_nframes_t start, jack_nframes_t end, double top, double bot, list<Selectable*>& result)
 778 {
 779         return;
 780 }
 781
 782 void
 783 TimeAxisView::get_inverted_selectables (Selection& sel, list<Selectable*>& result)
 784 {
 785         return;
 786 }
 787
 788 bool
 789 TimeAxisView::touched (double top, double bot)
 790 {
 791         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 792            y_position is the "origin" or "top" of the track.
 793          */
 794
 795         double mybot = y_position + height; // XXX need to include Editor::track_spacing;
 796
 797         return ((y_position <= bot && y_position >= top) ||
 798                 ((mybot <= bot) && (top < mybot)) ||
 799                 (mybot >= bot && y_position < top));
 800 }
 801
 802 void
 803 TimeAxisView::set_parent (TimeAxisView& p)
 804 {
 805         parent = &p;
 806 }
 807
 808 bool
 809 TimeAxisView::has_state () const
 810 {
 811         return _has_state;
 812 }
 813
 814 TimeAxisView*
 815 TimeAxisView::get_parent_with_state ()
 816 {
 817         if (parent == 0) {
 818                 return 0;
 819         }
 820
 821         if (parent->has_state()) {
 822                 return parent;
 823         }
 824
 825         return parent->get_parent_with_state ();
 826 }
 827
 828 void
 829 TimeAxisView::set_state (const XMLNode& node)
 830 {
 831         const XMLProperty *prop;
 832
 833         if ((prop = node.property ("track_height")) != 0) {
 834
 835                 if (prop->value() == "largest") {
 836                         set_height (Largest);
 837                 } else if (prop->value() == "large") {
 838                         set_height (Large);
 839                 } else if (prop->value() == "larger") {
 840                         set_height (Larger);
 841                 } else if (prop->value() == "normal") {
 842                         set_height (Normal);
 843                 } else if (prop->value() == "smaller") {
 844                         set_height (Smaller);
 845                 } else if (prop->value() == "small") {
 846                         set_height (Small);
 847                 } else {
 848                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
 849                         set_height (Normal);
 850                 }
 851
 852         } else {
 853                 set_height (Normal);
 854         }
 855 }
 856
 857 void
 858 TimeAxisView::reset_height()
 859 {
 860         set_height ((TrackHeight) height);
 861
 862         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 863                 (*i)->set_height ((TrackHeight)(*i)->height);
 864         }
 865 }
 866