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 <pbd/error.h>
  28
  29 #include <gtkmm2ext/utils.h>
  30 #include <gtkmm2ext/selector.h>
  31 #include <gtkmm2ext/stop_signal.h>
  32
  33 #include <ardour/session.h>
  34 #include <ardour/utils.h>
  35 #include <ardour/ladspa_plugin.h>
  36 #include <ardour/insert.h>
  37 #include <ardour/location.h>
  38
  39 #include "ardour_ui.h"
  40 #include "public_editor.h"
  41 #include "time_axis_view.h"
  42 #include "canvas-simplerect.h"
  43 #include "selection.h"
  44 #include "keyboard.h"
  45 #include "rgb_macros.h"
  46
  47 #include "i18n.h"
  48
  49 using namespace Gtk;
  50 /*can't use sigc namespace while we have the string_compose() in libs/pbd3/pbd */
  51 //using namespace sigc;
  52 using namespace ARDOUR;
  53 using namespace Editing;
  54
  55 const double trim_handle_size = 6.0; /* pixels */
  56
  57 TimeAxisView::TimeAxisView(ARDOUR::Session& sess, PublicEditor& ed, TimeAxisView* rent, Gtk::Widget *canvas)
  58         : AxisView(sess),
  59           editor(ed),
  60           controls_table (2, 9)
  61 {
  62         canvas_display = gnome_canvas_item_new (gnome_canvas_root(GNOME_CANVAS(canvas->gobj())),
  63                                               gnome_canvas_group_get_type(),
  64                                               "x", 0.0,
  65                                               "y", 0.0,
  66                                               NULL);
  67
  68         selection_group = gnome_canvas_item_new (GNOME_CANVAS_GROUP(canvas_display),
  69                                                gnome_canvas_group_get_type (),
  70                                                NULL);
  71         gnome_canvas_item_hide (selection_group);
  72
  73         control_parent = 0;
  74         display_menu = 0;
  75         size_menu = 0;
  76         _marked_for_display = false;
  77         _hidden = false;
  78         height = 0;
  79         effective_height = 0;
  80         parent = rent;
  81         _has_state = false;
  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
  93         name_entry.signal_focus_in_event().connect (sigc::ptr_fun (ARDOUR_UI::generic_focus_in_event));
  94         name_entry.signal_focus_out_event().connect (sigc::ptr_fun (ARDOUR_UI::generic_focus_out_event));
  95
  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                 gtk_object_destroy (GTK_OBJECT((*i)->rect));
 151                 gtk_object_destroy (GTK_OBJECT((*i)->start_trim));
 152                 gtk_object_destroy (GTK_OBJECT((*i)->end_trim));
 153         }
 154
 155         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 156                 gtk_object_destroy (GTK_OBJECT((*i)->rect));
 157                 gtk_object_destroy (GTK_OBJECT((*i)->start_trim));
 158                 gtk_object_destroy (GTK_OBJECT((*i)->end_trim));
 159         }
 160
 161         if (selection_group) {
 162                 gtk_object_destroy (GTK_OBJECT (selection_group));
 163                 selection_group = 0;
 164         }
 165
 166         if (canvas_display) {
 167                 gtk_object_destroy (GTK_OBJECT (canvas_display));
 168                 canvas_display = 0;
 169         }
 170
 171         if (display_menu) {
 172                 delete display_menu;
 173                 display_menu = 0;
 174         }
 175
 176         if (size_menu) {
 177                 delete size_menu;
 178                 size_menu = 0;
 179         }
 180 }
 181
 182 guint32
 183 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 184 {
 185         gdouble ix1, ix2, iy1, iy2;
 186         effective_height = 0;
 187
 188         if (control_parent) {
 189                 control_parent->reorder_child (controls_frame, nth);
 190         } else {
 191                 control_parent = parent;
 192                 parent->pack_start (controls_frame, false, false);
 193                 parent->reorder_child (controls_frame, nth);
 194         }
 195
 196         controls_frame.show ();
 197         controls_ebox.show ();
 198
 199         /* the coordinates used here are in the system of the
 200            item's parent ...
 201         */
 202
 203         gnome_canvas_item_get_bounds (canvas_display, &ix1, &iy1, &ix2, &iy2);
 204         gnome_canvas_item_i2w (canvas_display->parent, &ix1, &iy1);
 205         if (iy1 < 0) {
 206                 iy1 = 0;
 207         }
 208         gnome_canvas_item_move (canvas_display, 0.0, y - iy1);
 209         gnome_canvas_item_show (canvas_display); /* XXX not necessary */
 210
 211         y_position = y;
 212         order = nth;
 213         _hidden = false;
 214
 215         effective_height = height;
 216
 217         /* now show children */
 218
 219         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 220
 221                 if ((*i)->marked_for_display()) {
 222                         gnome_canvas_item_show ((*i)->canvas_display);
 223                 }
 224
 225                 if (GTK_OBJECT_FLAGS(GTK_OBJECT((*i)->canvas_display)) & GNOME_CANVAS_ITEM_VISIBLE) {
 226                         ++nth;
 227                         effective_height += (*i)->show_at (y + effective_height, nth, parent);
 228                 }
 229         }
 230
 231         return effective_height;
 232 }
 233
 234 gint
 235 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 236 {
 237         switch (ev->button) {
 238         case 1:
 239                 selection_click (ev);
 240                 break;
 241
 242         case 3:
 243                 popup_display_menu (ev->time);
 244                 break;
 245
 246         case 4:
 247                 if (Keyboard::no_modifier_keys_pressed (ev)) {
 248                         editor.scroll_tracks_up_line ();
 249                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 250                         step_height (true);
 251                 }
 252                 break;
 253
 254         case 5:
 255                 if (Keyboard::no_modifier_keys_pressed (ev)) {
 256                         editor.scroll_tracks_down_line ();
 257                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
 258                         step_height (false);
 259                 }
 260                 break;
 261
 262
 263         }
 264
 265         return TRUE;
 266 }
 267
 268 void
 269 TimeAxisView::selection_click (GdkEventButton* ev)
 270 {
 271         if (Keyboard::modifier_state_contains (ev->state, Keyboard::Shift)) {
 272
 273                 if (editor.get_selection().selected (this)) {
 274                         editor.get_selection().remove (this);
 275                 } else {
 276                         editor.get_selection().add (this);
 277                 }
 278
 279         } else {
 280
 281                 editor.get_selection().set (this);
 282         }
 283 }
 284
 285 void
 286 TimeAxisView::hide ()
 287 {
 288         if (_hidden) {
 289                 return;
 290         }
 291
 292         gnome_canvas_item_hide (canvas_display);
 293         controls_frame.hide ();
 294
 295         if (control_parent) {
 296                 control_parent->remove (controls_frame);
 297                 control_parent = 0;
 298         }
 299
 300         y_position = -1;
 301         _hidden = true;
 302
 303         /* now hide children */
 304
 305         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 306                 (*i)->hide ();
 307         }
 308
 309         Hiding ();
 310 }
 311
 312 void
 313 TimeAxisView::step_height (bool bigger)
 314 {
 315         switch (height) {
 316         case Largest:
 317                 if (!bigger) set_height (Large);
 318                 break;
 319         case Large:
 320                 if (bigger) set_height (Largest);
 321                 else set_height (Larger);
 322                 break;
 323         case Larger:
 324                 if (bigger) set_height (Large);
 325                 else set_height (Normal);
 326                 break;
 327         case Normal:
 328                 if (bigger) set_height (Larger);
 329                 else set_height (Smaller);
 330                 break;
 331         case Smaller:
 332                 if (bigger) set_height (Normal);
 333                 else set_height (Small);
 334                 break;
 335         case Small:
 336                 if (bigger) set_height (Smaller);
 337                 break;
 338         }
 339 }
 340
 341
 342 void
 343 TimeAxisView::set_height (TrackHeight h)
 344 {
 345         height = (guint32) h;
 346         controls_frame.set_size_request (-1, height);
 347
 348         if (GTK_OBJECT_FLAGS(GTK_OBJECT(selection_group)) & GNOME_CANVAS_ITEM_VISIBLE) {
 349                 /* resize the selection rect */
 350                 show_selection (editor.get_selection().time);
 351         }
 352
 353 //      for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 354 //              (*i)->set_height (h);
 355 //      }
 356
 357 }
 358
 359
 360 gint
 361 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 362 {
 363         if (ev->button == 3) {
 364                 return do_not_propagate (ev);
 365         }
 366         return FALSE;
 367 }
 368
 369 gint
 370 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 371 {
 372         if (ev->button == 3) {
 373                 popup_display_menu (ev->time);
 374                 return stop_signal (name_entry, "button_release_event");
 375         }
 376         return FALSE;
 377 }
 378
 379 void
 380 TimeAxisView::popup_display_menu (guint32 when)
 381 {
 382         if (display_menu == 0) {
 383                 build_display_menu ();
 384         }
 385         display_menu->popup (1, when);
 386 }
 387
 388 gint
 389 TimeAxisView::size_click (GdkEventButton *ev)
 390 {
 391         popup_size_menu (ev->time);
 392         return TRUE;
 393 }
 394
 395 void
 396 TimeAxisView::popup_size_menu (guint32 when)
 397 {
 398         if (size_menu == 0) {
 399                 build_size_menu ();
 400         }
 401         size_menu->popup (1, when);
 402 }
 403
 404 void
 405 TimeAxisView::set_selected (bool yn)
 406 {
 407         AxisView::set_selected (yn);
 408
 409         if (_selected) {
 410                 controls_ebox.set_name (controls_base_selected_name);
 411                 controls_frame.set_name (controls_base_selected_name);
 412
 413                 /* propagate any existing selection, if the mode is right */
 414
 415                 if (editor.current_mouse_mode() == Editing::MouseRange && !editor.get_selection().time.empty()) {
 416                         show_selection (editor.get_selection().time);
 417                 }
 418
 419         } else {
 420                 controls_ebox.set_name (controls_base_unselected_name);
 421                 controls_frame.set_name (controls_base_unselected_name);
 422
 423                 hide_selection ();
 424
 425                 /* children will be set for the yn=true case. but when deselecting
 426                    the editor only has a list of top-level trackviews, so we
 427                    have to do this here.
 428                 */
 429
 430                 for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 431                         (*i)->set_selected (false);
 432                 }
 433
 434
 435         }
 436 }
 437
 438 void
 439 TimeAxisView::build_size_menu ()
 440 {
 441         using namespace Menu_Helpers;
 442
 443         size_menu = new Menu;
 444         size_menu->set_name ("ArdourContextMenu");
 445         MenuList& items = size_menu->items();
 446
 447         items.push_back (MenuElem (_("Largest"), bind (mem_fun (*this, &TimeAxisView::set_height), Largest)));
 448         items.push_back (MenuElem (_("Large"), bind (mem_fun (*this, &TimeAxisView::set_height), Large)));
 449         items.push_back (MenuElem (_("Larger"), bind (mem_fun (*this, &TimeAxisView::set_height), Larger)));
 450         items.push_back (MenuElem (_("Normal"), bind (mem_fun (*this, &TimeAxisView::set_height), Normal)));
 451         items.push_back (MenuElem (_("Smaller"), bind (mem_fun (*this, &TimeAxisView::set_height), Smaller)));
 452         items.push_back (MenuElem (_("Small"), bind (mem_fun (*this, &TimeAxisView::set_height), Small)));
 453 }
 454
 455 void
 456 TimeAxisView::build_display_menu ()
 457 {
 458         using namespace Menu_Helpers;
 459
 460         display_menu = new Menu;
 461         display_menu->set_name ("ArdourContextMenu");
 462
 463         // Just let implementing classes define what goes into the manu
 464 }
 465
 466 void
 467 TimeAxisView::set_samples_per_unit (double spu)
 468 {
 469         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 470                 (*i)->set_samples_per_unit (spu);
 471         }
 472 }
 473
 474 void
 475 TimeAxisView::show_timestretch (jack_nframes_t start, jack_nframes_t end)
 476 {
 477         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 478                 (*i)->show_timestretch (start, end);
 479         }
 480 }
 481
 482 void
 483 TimeAxisView::hide_timestretch ()
 484 {
 485         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 486                 (*i)->hide_timestretch ();
 487         }
 488 }
 489
 490 void
 491 TimeAxisView::show_selection (TimeSelection& ts)
 492 {
 493         double x1;
 494         double x2;
 495         double y2;
 496         SelectionRect *rect;
 497
 498         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 499                 (*i)->show_selection (ts);
 500         }
 501
 502         if (GTK_OBJECT_FLAGS(GTK_OBJECT(selection_group)) & GNOME_CANVAS_ITEM_VISIBLE) {
 503                 while (!used_selection_rects.empty()) {
 504                         free_selection_rects.push_front (used_selection_rects.front());
 505                         used_selection_rects.pop_front();
 506                         gnome_canvas_item_hide (free_selection_rects.front()->rect);
 507                         gnome_canvas_item_hide (free_selection_rects.front()->start_trim);
 508                         gnome_canvas_item_hide (free_selection_rects.front()->end_trim);
 509                 }
 510                 gnome_canvas_item_hide (selection_group);
 511         }
 512
 513         gnome_canvas_item_show (selection_group);
 514         gnome_canvas_item_raise_to_top (selection_group);
 515
 516         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 517                 jack_nframes_t start, end, cnt;
 518
 519                 start = (*i).start;
 520                 end = (*i).end;
 521                 cnt = end - start + 1;
 522
 523                 rect = get_selection_rect ((*i).id);
 524
 525                 x1 = start / editor.get_current_zoom();
 526                 x2 = (start + cnt - 1) / editor.get_current_zoom();
 527                 y2 = height;
 528
 529                 gtk_object_set (GTK_OBJECT(rect->rect),
 530                                 "x1", x1,
 531                                 "y1", 1.0,
 532                                 "x2", x2,
 533                                 "y2", y2,
 534                                 NULL);
 535
 536                 // trim boxes are at the top for selections
 537
 538                 if (x2 > x1) {
 539                         gtk_object_set (GTK_OBJECT(rect->start_trim),
 540                                         "x1", x1,
 541                                         "y1", 1.0,
 542                                         "x2", x1 + trim_handle_size,
 543                                         "y2", 1.0 + trim_handle_size,
 544                                         NULL);
 545                         gtk_object_set (GTK_OBJECT(rect->end_trim),
 546                                         "x1", x2 - trim_handle_size,
 547                                         "y1", 1.0,
 548                                         "x2", x2,
 549                                         "y2", 1.0 + trim_handle_size,
 550                                         NULL);
 551                         gnome_canvas_item_show (rect->start_trim);
 552                         gnome_canvas_item_show (rect->end_trim);
 553                 } else {
 554                         gnome_canvas_item_hide (rect->start_trim);
 555                         gnome_canvas_item_hide (rect->end_trim);
 556                 }
 557
 558                 gnome_canvas_item_show (rect->rect);
 559                 used_selection_rects.push_back (rect);
 560         }
 561 }
 562
 563 void
 564 TimeAxisView::reshow_selection (TimeSelection& ts)
 565 {
 566         show_selection (ts);
 567
 568         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 569                 (*i)->show_selection (ts);
 570         }
 571 }
 572
 573 void
 574 TimeAxisView::hide_selection ()
 575 {
 576         if (GTK_OBJECT_FLAGS(GTK_OBJECT(selection_group)) & GNOME_CANVAS_ITEM_VISIBLE) {
 577                 while (!used_selection_rects.empty()) {
 578                         free_selection_rects.push_front (used_selection_rects.front());
 579                         used_selection_rects.pop_front();
 580                         gnome_canvas_item_hide (free_selection_rects.front()->rect);
 581                         gnome_canvas_item_hide (free_selection_rects.front()->start_trim);
 582                         gnome_canvas_item_hide (free_selection_rects.front()->end_trim);
 583                 }
 584                 gnome_canvas_item_hide (selection_group);
 585         }
 586
 587         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 588                 (*i)->hide_selection ();
 589         }
 590 }
 591
 592 void
 593 TimeAxisView::order_selection_trims (GnomeCanvasItem *item, bool put_start_on_top)
 594 {
 595         /* find the selection rect this is for. we have the item corresponding to one
 596            of the trim handles.
 597          */
 598
 599         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 600                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 601
 602                         /* make one trim handle be "above" the other so that if they overlap,
 603                            the top one is the one last used.
 604                         */
 605
 606                         gnome_canvas_item_raise_to_top ((*i)->rect);
 607                         gnome_canvas_item_raise_to_top (put_start_on_top ? (*i)->start_trim : (*i)->end_trim);
 608                         gnome_canvas_item_raise_to_top (put_start_on_top ? (*i)->end_trim : (*i)->start_trim);
 609
 610                         break;
 611                 }
 612         }
 613 }
 614
 615 SelectionRect *
 616 TimeAxisView::get_selection_rect (uint32_t id)
 617 {
 618         SelectionRect *rect;
 619
 620         /* check to see if we already have a visible rect for this particular selection ID */
 621
 622         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 623                 if ((*i)->id == id) {
 624                         return (*i);
 625                 }
 626         }
 627
 628         /* ditto for the free rect list */
 629
 630         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 631                 if ((*i)->id == id) {
 632                         free_selection_rects.erase (i);
 633                         return (*i);
 634                 }
 635         }
 636
 637         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 638
 639         if (free_selection_rects.empty()) {
 640
 641                 rect = new SelectionRect;
 642
 643                 rect->rect = gnome_canvas_item_new (GNOME_CANVAS_GROUP(selection_group),
 644                                                   gnome_canvas_simplerect_get_type(),
 645                                                   "x1", 0.0,
 646                                                   "y1", 0.0,
 647                                                   "x2", 0.0,
 648                                                   "y2", 0.0,
 649                                                   "fill_color_rgba", color_map[cSelectionRectFill],
 650                                                   "outline_color_rgba" , color_map[cSelectionRectOutline],
 651                                                   NULL);
 652
 653
 654                 rect->start_trim = gnome_canvas_item_new (GNOME_CANVAS_GROUP(selection_group),
 655                                                             gnome_canvas_simplerect_get_type(),
 656                                                             "x1", (gdouble) 0.0,
 657                                                             "x2", (gdouble) 0.0,
 658                                                             "fill_color_rgba" , color_map[cSelectionStartFill],
 659                                                             "outline_color_rgba" , color_map[cSelectionStartOutline],
 660                                                             NULL);
 661
 662                 rect->end_trim = gnome_canvas_item_new (GNOME_CANVAS_GROUP(selection_group),
 663                                                           gnome_canvas_simplerect_get_type(),
 664                                                           "x1", 0.0,
 665                                                           "x2", 0.0,
 666                                                           "fill_color_rgba" , color_map[cSelectionEndFill],
 667                                                           "outline_color_rgba" , color_map[cSelectionEndOutline],
 668                                                           NULL);
 669                 free_selection_rects.push_front (rect);
 670
 671                 gtk_signal_connect (GTK_OBJECT(rect->rect), "event",
 672                                     (GtkSignalFunc) PublicEditor::canvas_selection_rect_event,
 673                                     &editor);
 674                 gtk_signal_connect (GTK_OBJECT(rect->start_trim), "event",
 675                                     (GtkSignalFunc) PublicEditor::canvas_selection_start_trim_event,
 676                                     &editor);
 677                 gtk_signal_connect (GTK_OBJECT(rect->end_trim), "event",
 678                                     (GtkSignalFunc) PublicEditor::canvas_selection_end_trim_event,
 679                                     &editor);
 680
 681                 gtk_object_set_data(GTK_OBJECT(rect->rect), "rect", rect);
 682                 gtk_object_set_data(GTK_OBJECT(rect->start_trim), "rect", rect);
 683                 gtk_object_set_data(GTK_OBJECT(rect->end_trim), "rect", rect);
 684         }
 685
 686         rect = free_selection_rects.front();
 687         rect->id = id;
 688         free_selection_rects.pop_front();
 689         return rect;
 690 }
 691
 692 bool
 693 TimeAxisView::is_child (TimeAxisView* tav)
 694 {
 695         return find (children.begin(), children.end(), tav) != children.end();
 696 }
 697
 698 void
 699 TimeAxisView::add_child (TimeAxisView* child)
 700 {
 701         children.push_back (child);
 702 }
 703
 704 void
 705 TimeAxisView::remove_child (TimeAxisView* child)
 706 {
 707         vector<TimeAxisView*>::iterator i;
 708
 709         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 710                 children.erase (i);
 711         }
 712 }
 713
 714 void
 715 TimeAxisView::get_selectables (jack_nframes_t start, jack_nframes_t end, double top, double bot, list<Selectable*>& result)
 716 {
 717         return;
 718 }
 719
 720 void
 721 TimeAxisView::get_inverted_selectables (Selection& sel, list<Selectable*>& result)
 722 {
 723         return;
 724 }
 725
 726 bool
 727 TimeAxisView::touched (double top, double bot)
 728 {
 729         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 730            y_position is the "origin" or "top" of the track.
 731          */
 732
 733         double mybot = y_position + height; // XXX need to include Editor::track_spacing;
 734
 735         return ((y_position <= bot && y_position >= top) ||
 736                 ((mybot <= bot) && (top < mybot)) ||
 737                 (mybot >= bot && y_position < top));
 738 }
 739
 740 void
 741 TimeAxisView::set_parent (TimeAxisView& p)
 742 {
 743         parent = &p;
 744 }
 745
 746 bool
 747 TimeAxisView::has_state () const
 748 {
 749         return _has_state;
 750 }
 751
 752 TimeAxisView*
 753 TimeAxisView::get_parent_with_state ()
 754 {
 755         if (parent == 0) {
 756                 return 0;
 757         }
 758
 759         if (parent->has_state()) {
 760                 return parent;
 761         }
 762
 763         return parent->get_parent_with_state ();
 764 }
 765
 766 void
 767 TimeAxisView::set_state (const XMLNode& node)
 768 {
 769         const XMLProperty *prop;
 770
 771         if ((prop = node.property ("track_height")) != 0) {
 772
 773                 if (prop->value() == "largest") {
 774                         set_height (Largest);
 775                 } else if (prop->value() == "large") {
 776                         set_height (Large);
 777                 } else if (prop->value() == "larger") {
 778                         set_height (Larger);
 779                 } else if (prop->value() == "normal") {
 780                         set_height (Normal);
 781                 } else if (prop->value() == "smaller") {
 782                         set_height (Smaller);
 783                 } else if (prop->value() == "small") {
 784                         set_height (Small);
 785                 } else {
 786                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
 787                         set_height (Normal);
 788                 }
 789
 790         } else {
 791                 set_height (Normal);
 792         }
 793 }
 794
 795 void
 796 TimeAxisView::reset_height()
 797 {
 798         set_height ((TrackHeight) height);
 799
 800         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 801                 (*i)->set_height ((TrackHeight)(*i)->height);
 802         }
 803 }
 804