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.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 Gdk;
  56 using namespace sigc;
  57 using namespace ARDOUR;
  58 using namespace PBD;
  59 using namespace Editing;
  60 using namespace ArdourCanvas;
  61
  62 const double trim_handle_size = 6.0; /* pixels */
  63
  64 uint32_t TimeAxisView::hLargest = 0;
  65 uint32_t TimeAxisView::hLarge = 0;
  66 uint32_t TimeAxisView::hLarger = 0;
  67 uint32_t TimeAxisView::hNormal = 0;
  68 uint32_t TimeAxisView::hSmaller = 0;
  69 uint32_t TimeAxisView::hSmall = 0;
  70 bool TimeAxisView::need_size_info = true;
  71
  72 TimeAxisView::TimeAxisView (ARDOUR::Session& sess, PublicEditor& ed, TimeAxisView* rent, Canvas& canvas)
  73         : AxisView (sess),
  74           editor (ed),
  75           controls_table (2, 8)
  76 {
  77         if (need_size_info) {
  78                 compute_controls_size_info ();
  79                 need_size_info = false;
  80         }
  81
  82         canvas_display = new Group (*canvas.root(), 0.0, 0.0);
  83
  84         selection_group = new Group (*canvas_display);
  85         selection_group->hide();
  86
  87         control_parent = 0;
  88         display_menu = 0;
  89         size_menu = 0;
  90         _marked_for_display = false;
  91         _hidden = false;
  92         height = 0;
  93         effective_height = 0;
  94         parent = rent;
  95         _has_state = false;
  96         last_name_entry_key_press_event = 0;
  97         name_packing = NamePackingBits (0);
  98
  99         /*
 100           Create the standard LHS Controls
 101           We create the top-level container and name add the name label here,
 102           subclasses can add to the layout as required
 103         */
 104
 105         name_entry.set_name ("EditorTrackNameDisplay");
 106         name_entry.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_release));
 107         name_entry.signal_button_press_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_press));
 108         name_entry.signal_key_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_key_release));
 109         name_entry.signal_activate().connect (mem_fun(*this, &TimeAxisView::name_entry_activated));
 110         name_entry.signal_focus_in_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 111         name_entry.signal_focus_out_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 112         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 113
 114         name_label.set_name ("TrackLabel");
 115         name_label.set_alignment (0.0, 0.5);
 116
 117         /* typically, either name_label OR name_entry are visible,
 118            but not both. its up to derived classes to show/hide them as they
 119            wish.
 120         */
 121
 122         name_hbox.show ();
 123
 124         controls_table.set_border_width (2);
 125         controls_table.set_row_spacings (0);
 126         controls_table.set_col_spacings (0);
 127         controls_table.set_homogeneous (true);
 128
 129         controls_table.attach (name_hbox, 0, 4, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);
 130         controls_table.show_all ();
 131
 132         controls_vbox.pack_start (controls_table, false, false);
 133         controls_vbox.show ();
 134
 135         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 136         controls_ebox.add (controls_vbox);
 137         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 138         controls_ebox.set_flags (CAN_FOCUS);
 139
 140         controls_ebox.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 141         controls_ebox.signal_scroll_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 142
 143         controls_lhs_pad.set_name ("TimeAxisViewControlsPadding");
 144         controls_hbox.pack_start (controls_lhs_pad,false,false);
 145         controls_hbox.pack_start (controls_ebox,true,true);
 146         controls_hbox.show ();
 147
 148         controls_frame.add (controls_hbox);
 149         controls_frame.set_name ("TimeAxisViewControlsBaseUnselected");
 150         controls_frame.set_shadow_type (Gtk::SHADOW_OUT);
 151
 152         ColorChanged.connect (mem_fun (*this, &TimeAxisView::color_handler));
 153 }
 154
 155 TimeAxisView::~TimeAxisView()
 156 {
 157         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 158                 delete *i;
 159         }
 160
 161         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 162                 delete (*i)->rect;
 163                 delete (*i)->start_trim;
 164                 delete (*i)->end_trim;
 165
 166         }
 167
 168         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 169                 delete (*i)->rect;
 170                 delete (*i)->start_trim;
 171                 delete (*i)->end_trim;
 172         }
 173
 174         if (selection_group) {
 175                 delete selection_group;
 176                 selection_group = 0;
 177         }
 178
 179         if (canvas_display) {
 180                 delete canvas_display;
 181                 canvas_display = 0;
 182         }
 183
 184         if (display_menu) {
 185                 delete display_menu;
 186                 display_menu = 0;
 187         }
 188 }
 189
 190 guint32
 191 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 192 {
 193         gdouble ix1, ix2, iy1, iy2;
 194         effective_height = 0;
 195
 196         if (control_parent) {
 197                 control_parent->reorder_child (controls_frame, nth);
 198         } else {
 199                 control_parent = parent;
 200                 parent->pack_start (controls_frame, false, false);
 201                 parent->reorder_child (controls_frame, nth);
 202         }
 203         controls_frame.show ();
 204         controls_ebox.show ();
 205
 206         /* the coordinates used here are in the system of the
 207            item's parent ...
 208         */
 209
 210         canvas_display->get_bounds (ix1, iy1, ix2, iy2);
 211         Group* pg = canvas_display->property_parent();
 212         pg->i2w (ix1, iy1);
 213
 214         if (iy1 < 0) {
 215                 iy1 = 0;
 216         }
 217
 218         canvas_display->move (0.0, y - iy1);
 219         canvas_display->show();/* XXX not necessary */
 220         y_position = y;
 221         order = nth;
 222         _hidden = false;
 223
 224         effective_height = height;
 225
 226         /* now show children */
 227
 228         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 229
 230                 if ((*i)->marked_for_display()) {
 231                         (*i)->canvas_display->show();
 232                 }
 233
 234                 if (canvas_item_visible ((*i)->canvas_display)) {
 235                         ++nth;
 236                         effective_height += (*i)->show_at (y + effective_height, nth, parent);
 237                 }
 238         }
 239
 240         return effective_height;
 241 }
 242
 243 bool
 244 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 245 {
 246         switch (ev->direction) {
 247         case GDK_SCROLL_UP:
 248                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::Shift)) {
 249                         step_height (true);
 250                         return true;
 251                 }
 252                 break;
 253
 254         case GDK_SCROLL_DOWN:
 255                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::Shift)) {
 256                         step_height (false);
 257                         return true;
 258                 }
 259                 break;
 260
 261         default:
 262                 /* no handling for left/right, yet */
 263                 break;
 264         }
 265
 266         return false;
 267 }
 268
 269 bool
 270 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 271 {
 272         switch (ev->button) {
 273         case 1:
 274                 selection_click (ev);
 275                 break;
 276
 277         case 3:
 278                 popup_display_menu (ev->time);
 279                 break;
 280         }
 281
 282         return true;
 283 }
 284
 285 void
 286 TimeAxisView::selection_click (GdkEventButton* ev)
 287 {
 288         if (Keyboard::modifier_state_contains (ev->state, Keyboard::Shift)) {
 289
 290                 if (editor.get_selection().selected (this)) {
 291                         editor.get_selection().remove (this);
 292                 } else {
 293                         editor.get_selection().add (this);
 294                 }
 295
 296         } else {
 297
 298                 editor.get_selection().set (this);
 299         }
 300 }
 301
 302 void
 303 TimeAxisView::hide ()
 304 {
 305         if (_hidden) {
 306                 return;
 307         }
 308
 309         canvas_display->hide();
 310         controls_frame.hide ();
 311
 312         if (control_parent) {
 313                 control_parent->remove (controls_frame);
 314                 control_parent = 0;
 315         }
 316
 317         y_position = -1;
 318         _hidden = true;
 319
 320         /* now hide children */
 321
 322         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 323                 (*i)->hide ();
 324         }
 325
 326         Hiding ();
 327 }
 328
 329 void
 330 TimeAxisView::step_height (bool bigger)
 331 {
 332
 333        if (height == hLargest) {
 334                if (!bigger) set_height (Large);
 335                return;
 336        }
 337        if (height == hLarge) {
 338                if (bigger) set_height (Largest);
 339                 else set_height (Larger);
 340                return;
 341        }
 342        if (height == hLarger) {
 343                 if (bigger) set_height (Large);
 344                 else set_height (Normal);
 345                return;
 346        }
 347        if (height == hNormal) {
 348                 if (bigger) set_height (Larger);
 349                 else set_height (Smaller);
 350                return;
 351        }
 352        if (height == hSmaller) {
 353                 if (bigger) set_height (Normal);
 354                 else set_height (Small);
 355                return;
 356        }
 357        if (height == hSmall) {
 358                 if (bigger) set_height (Smaller);
 359                return;
 360        }
 361 }
 362
 363 void
 364 TimeAxisView::set_height (TrackHeight h)
 365 {
 366         height_style = h;
 367         set_height_pixels (height_to_pixels (h));
 368 }
 369
 370 void
 371 TimeAxisView::set_height_pixels (uint32_t h)
 372 {
 373         height = h;
 374         controls_frame.set_size_request (-1, height);
 375
 376         if (canvas_item_visible (selection_group)) {
 377                 /* resize the selection rect */
 378                 show_selection (editor.get_selection().time);
 379         }
 380 }
 381
 382 bool
 383 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 384 {
 385         switch (ev->keyval) {
 386         case GDK_Tab:
 387         case GDK_Up:
 388         case GDK_Down:
 389                 name_entry_changed ();
 390                 return true;
 391
 392         default:
 393                 break;
 394         }
 395
 396 #ifdef TIMEOUT_NAME_EDIT
 397         /* adapt the timeout to reflect the user's typing speed */
 398
 399         guint32 name_entry_timeout;
 400
 401         if (last_name_entry_key_press_event) {
 402                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 403                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 404         } else {
 405                 /* start with a 1 second timeout */
 406                 name_entry_timeout = 1000;
 407         }
 408
 409         last_name_entry_key_press_event = ev->time;
 410
 411         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 412
 413         name_entry_key_timeout.disconnect();
 414         name_entry_key_timeout = Glib::signal_timeout().connect (mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 415 #endif
 416
 417         return false;
 418 }
 419
 420 bool
 421 TimeAxisView::name_entry_focus_in (GdkEventFocus* ev)
 422 {
 423         name_entry.select_region (0, -1);
 424         name_entry.set_name ("EditorActiveTrackNameDisplay");
 425         return false;
 426 }
 427
 428 bool
 429 TimeAxisView::name_entry_focus_out (GdkEventFocus* ev)
 430 {
 431         /* clean up */
 432
 433         last_name_entry_key_press_event = 0;
 434         name_entry_key_timeout.disconnect ();
 435         name_entry.set_name ("EditorTrackNameDisplay");
 436
 437         /* do the real stuff */
 438
 439         name_entry_changed ();
 440
 441         return false;
 442 }
 443
 444 bool
 445 TimeAxisView::name_entry_key_timed_out ()
 446 {
 447         name_entry_activated();
 448         return false;
 449 }
 450
 451 void
 452 TimeAxisView::name_entry_activated ()
 453 {
 454         controls_ebox.grab_focus();
 455 }
 456
 457 void
 458 TimeAxisView::name_entry_changed ()
 459 {
 460 }
 461
 462 bool
 463 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 464 {
 465         if (ev->button == 3) {
 466                 return true;
 467         }
 468         return false;
 469 }
 470
 471 bool
 472 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 473 {
 474         if (ev->button == 3) {
 475                 popup_display_menu (ev->time);
 476                 return true;
 477         }
 478         return false;
 479 }
 480
 481 void
 482 TimeAxisView::popup_display_menu (guint32 when)
 483 {
 484         if (display_menu == 0) {
 485                 build_display_menu ();
 486         }
 487         display_menu->popup (1, when);
 488 }
 489
 490 gint
 491 TimeAxisView::size_click (GdkEventButton *ev)
 492 {
 493         popup_size_menu (ev->time);
 494         return TRUE;
 495 }
 496
 497 void
 498 TimeAxisView::popup_size_menu (guint32 when)
 499 {
 500         if (size_menu == 0) {
 501                 build_size_menu ();
 502         }
 503         size_menu->popup (1, when);
 504 }
 505
 506 void
 507 TimeAxisView::set_selected (bool yn)
 508 {
 509         AxisView::set_selected (yn);
 510
 511         if (_selected) {
 512                 controls_ebox.set_name (controls_base_selected_name);
 513                 controls_frame.set_name (controls_base_selected_name);
 514
 515                 /* propagate any existing selection, if the mode is right */
 516
 517                 if (editor.current_mouse_mode() == Editing::MouseRange && !editor.get_selection().time.empty()) {
 518                         show_selection (editor.get_selection().time);
 519                 }
 520
 521         } else {
 522                 controls_ebox.set_name (controls_base_unselected_name);
 523                 controls_frame.set_name (controls_base_unselected_name);
 524
 525                 hide_selection ();
 526
 527                 /* children will be set for the yn=true case. but when deselecting
 528                    the editor only has a list of top-level trackviews, so we
 529                    have to do this here.
 530                 */
 531
 532                 for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 533                         (*i)->set_selected (false);
 534                 }
 535
 536
 537         }
 538 }
 539
 540 void
 541 TimeAxisView::build_size_menu ()
 542 {
 543         using namespace Menu_Helpers;
 544
 545         size_menu = new Menu;
 546         size_menu->set_name ("ArdourContextMenu");
 547         MenuList& items = size_menu->items();
 548
 549         items.push_back (MenuElem (_("Largest"), bind (mem_fun (*this, &TimeAxisView::set_height), Largest)));
 550         items.push_back (MenuElem (_("Large"), bind (mem_fun (*this, &TimeAxisView::set_height), Large)));
 551         items.push_back (MenuElem (_("Larger"), bind (mem_fun (*this, &TimeAxisView::set_height), Larger)));
 552         items.push_back (MenuElem (_("Normal"), bind (mem_fun (*this, &TimeAxisView::set_height), Normal)));
 553         items.push_back (MenuElem (_("Smaller"), bind (mem_fun (*this, &TimeAxisView::set_height),Smaller)));
 554         items.push_back (MenuElem (_("Small"), bind (mem_fun (*this, &TimeAxisView::set_height), Small)));
 555 }
 556
 557 void
 558 TimeAxisView::build_display_menu ()
 559 {
 560         using namespace Menu_Helpers;
 561
 562         display_menu = new Menu;
 563         display_menu->set_name ("ArdourContextMenu");
 564
 565         // Just let implementing classes define what goes into the manu
 566 }
 567
 568 void
 569 TimeAxisView::set_samples_per_unit (double spu)
 570 {
 571         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 572                 (*i)->set_samples_per_unit (spu);
 573         }
 574 }
 575
 576 void
 577 TimeAxisView::show_timestretch (jack_nframes_t start, jack_nframes_t end)
 578 {
 579         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 580                 (*i)->show_timestretch (start, end);
 581         }
 582 }
 583
 584 void
 585 TimeAxisView::hide_timestretch ()
 586 {
 587         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 588                 (*i)->hide_timestretch ();
 589         }
 590 }
 591
 592 void
 593 TimeAxisView::show_selection (TimeSelection& ts)
 594 {
 595         double x1;
 596         double x2;
 597         double y2;
 598         SelectionRect *rect;
 599
 600         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 601                 (*i)->show_selection (ts);
 602         }
 603
 604         if (canvas_item_visible (selection_group)) {
 605                 while (!used_selection_rects.empty()) {
 606                         free_selection_rects.push_front (used_selection_rects.front());
 607                         used_selection_rects.pop_front();
 608                         free_selection_rects.front()->rect->hide();
 609                         free_selection_rects.front()->start_trim->hide();
 610                         free_selection_rects.front()->end_trim->hide();
 611                 }
 612                 selection_group->hide();
 613         }
 614
 615         selection_group->show();
 616         selection_group->raise_to_top();
 617
 618         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 619                 jack_nframes_t start, end, cnt;
 620
 621                 start = (*i).start;
 622                 end = (*i).end;
 623                 cnt = end - start + 1;
 624
 625                 rect = get_selection_rect ((*i).id);
 626
 627                 x1 = editor.frame_to_unit (start);
 628                 x2 = editor.frame_to_unit (start + cnt - 1);
 629                 y2 = height;
 630
 631                 rect->rect->property_x1() = x1;
 632                 rect->rect->property_y1() = 1.0;
 633                 rect->rect->property_x2() = x2;
 634                 rect->rect->property_y2() = y2;
 635
 636                 // trim boxes are at the top for selections
 637
 638                 if (x2 > x1) {
 639                         rect->start_trim->property_x1() = x1;
 640                         rect->start_trim->property_y1() = 1.0;
 641                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 642                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 643
 644                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 645                         rect->end_trim->property_y1() = 1.0;
 646                         rect->end_trim->property_x2() = x2;
 647                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 648
 649                         rect->start_trim->show();
 650                         rect->end_trim->show();
 651                 } else {
 652                         rect->start_trim->hide();
 653                         rect->end_trim->hide();
 654                 }
 655
 656                 rect->rect->show ();
 657                 used_selection_rects.push_back (rect);
 658         }
 659 }
 660
 661 void
 662 TimeAxisView::reshow_selection (TimeSelection& ts)
 663 {
 664         show_selection (ts);
 665
 666         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 667                 (*i)->show_selection (ts);
 668         }
 669 }
 670
 671 void
 672 TimeAxisView::hide_selection ()
 673 {
 674         if (canvas_item_visible (selection_group)) {
 675                 while (!used_selection_rects.empty()) {
 676                         free_selection_rects.push_front (used_selection_rects.front());
 677                         used_selection_rects.pop_front();
 678                         free_selection_rects.front()->rect->hide();
 679                         free_selection_rects.front()->start_trim->hide();
 680                         free_selection_rects.front()->end_trim->hide();
 681                 }
 682                 selection_group->hide();
 683         }
 684
 685         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 686                 (*i)->hide_selection ();
 687         }
 688 }
 689
 690 void
 691 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 692 {
 693         /* find the selection rect this is for. we have the item corresponding to one
 694            of the trim handles.
 695          */
 696
 697         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 698                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 699
 700                         /* make one trim handle be "above" the other so that if they overlap,
 701                            the top one is the one last used.
 702                         */
 703
 704                         (*i)->rect->raise_to_top ();
 705                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 706                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 707
 708                         break;
 709                 }
 710         }
 711 }
 712
 713 SelectionRect *
 714 TimeAxisView::get_selection_rect (uint32_t id)
 715 {
 716         SelectionRect *rect;
 717
 718         /* check to see if we already have a visible rect for this particular selection ID */
 719
 720         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 721                 if ((*i)->id == id) {
 722                         return (*i);
 723                 }
 724         }
 725
 726         /* ditto for the free rect list */
 727
 728         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 729                 if ((*i)->id == id) {
 730                         free_selection_rects.erase (i);
 731                         return (*i);
 732                 }
 733         }
 734
 735         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 736
 737         if (free_selection_rects.empty()) {
 738
 739                 rect = new SelectionRect;
 740
 741                 rect->rect = new SimpleRect (*selection_group);
 742                 rect->rect->property_x1() = 0.0;
 743                 rect->rect->property_y1() = 0.0;
 744                 rect->rect->property_x2() = 0.0;
 745                 rect->rect->property_y2() = 0.0;
 746                 rect->rect->property_fill_color_rgba() = color_map[cSelectionRectFill];
 747                 rect->rect->property_outline_color_rgba() = color_map[cSelectionRectOutline];
 748
 749                 rect->start_trim = new SimpleRect (*selection_group);
 750                 rect->start_trim->property_x1() = 0.0;
 751                 rect->start_trim->property_x2() = 0.0;
 752                 rect->start_trim->property_fill_color_rgba() = color_map[cSelectionStartFill];
 753                 rect->start_trim->property_outline_color_rgba() = color_map[cSelectionStartOutline];
 754
 755                 rect->end_trim = new SimpleRect (*selection_group);
 756                 rect->end_trim->property_x1() = 0.0;
 757                 rect->end_trim->property_x2() = 0.0;
 758                 rect->end_trim->property_fill_color_rgba() = color_map[cSelectionEndFill];
 759                 rect->end_trim->property_outline_color_rgba() = color_map[cSelectionEndOutline];
 760
 761                 free_selection_rects.push_front (rect);
 762
 763                 rect->rect->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 764                 rect->start_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 765                 rect->end_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 766         }
 767
 768         rect = free_selection_rects.front();
 769         rect->id = id;
 770         free_selection_rects.pop_front();
 771         return rect;
 772 }
 773
 774 bool
 775 TimeAxisView::is_child (TimeAxisView* tav)
 776 {
 777         return find (children.begin(), children.end(), tav) != children.end();
 778 }
 779
 780 void
 781 TimeAxisView::add_child (TimeAxisView* child)
 782 {
 783         children.push_back (child);
 784 }
 785
 786 void
 787 TimeAxisView::remove_child (TimeAxisView* child)
 788 {
 789         vector<TimeAxisView*>::iterator i;
 790
 791         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 792                 children.erase (i);
 793         }
 794 }
 795
 796 void
 797 TimeAxisView::get_selectables (jack_nframes_t start, jack_nframes_t end, double top, double bot, list<Selectable*>& result)
 798 {
 799         return;
 800 }
 801
 802 void
 803 TimeAxisView::get_inverted_selectables (Selection& sel, list<Selectable*>& result)
 804 {
 805         return;
 806 }
 807
 808 bool
 809 TimeAxisView::touched (double top, double bot)
 810 {
 811         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 812            y_position is the "origin" or "top" of the track.
 813          */
 814
 815         double mybot = y_position + height; // XXX need to include Editor::track_spacing;
 816
 817         return ((y_position <= bot && y_position >= top) ||
 818                 ((mybot <= bot) && (top < mybot)) ||
 819                 (mybot >= bot && y_position < top));
 820 }
 821
 822 void
 823 TimeAxisView::set_parent (TimeAxisView& p)
 824 {
 825         parent = &p;
 826 }
 827
 828 bool
 829 TimeAxisView::has_state () const
 830 {
 831         return _has_state;
 832 }
 833
 834 TimeAxisView*
 835 TimeAxisView::get_parent_with_state ()
 836 {
 837         if (parent == 0) {
 838                 return 0;
 839         }
 840
 841         if (parent->has_state()) {
 842                 return parent;
 843         }
 844
 845         return parent->get_parent_with_state ();
 846 }
 847
 848 void
 849 TimeAxisView::set_state (const XMLNode& node)
 850 {
 851         const XMLProperty *prop;
 852
 853         if ((prop = node.property ("track_height")) != 0) {
 854
 855                 if (prop->value() == "largest") {
 856                         set_height (Largest);
 857                 } else if (prop->value() == "large") {
 858                         set_height (Large);
 859                 } else if (prop->value() == "larger") {
 860                         set_height (Larger);
 861                 } else if (prop->value() == "normal") {
 862                         set_height (Normal);
 863                 } else if (prop->value() == "smaller") {
 864                         set_height (Smaller);
 865                 } else if (prop->value() == "small") {
 866                         set_height (Small);
 867                 } else {
 868                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
 869                         set_height (Normal);
 870                 }
 871
 872         } else {
 873                 set_height (Normal);
 874         }
 875 }
 876
 877 void
 878 TimeAxisView::reset_height()
 879 {
 880         set_height_pixels (height);
 881
 882         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 883                 (*i)->set_height_pixels ((TrackHeight)(*i)->height);
 884         }
 885 }
 886
 887 uint32_t
 888 TimeAxisView::height_to_pixels (TrackHeight h)
 889 {
 890         switch (h) {
 891         case Largest:
 892                 return hLargest;
 893         case Large:
 894                 return hLarge;
 895         case Larger:
 896                 return hLarger;
 897         case Normal:
 898                 return hNormal;
 899         case Smaller:
 900                 return hSmaller;
 901         case Small:
 902                 return hSmall;
 903         }
 904
 905         // what is wrong with gcc ?
 906
 907         return hNormal;
 908 }
 909
 910 void
 911 TimeAxisView::compute_controls_size_info ()
 912 {
 913         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
 914         Gtk::Table two_row_table (2, 8);
 915         Gtk::Table one_row_table (1, 8);
 916         Button* buttons[5];
 917         const int border_width = 2;
 918         const int extra_height = (2 * border_width) + 2; // 2 pixels for the controls frame
 919
 920         window.add (one_row_table);
 921
 922         one_row_table.set_border_width (border_width);
 923         one_row_table.set_row_spacings (0);
 924         one_row_table.set_col_spacings (0);
 925         one_row_table.set_homogeneous (true);
 926
 927         two_row_table.set_border_width (border_width);
 928         two_row_table.set_row_spacings (0);
 929         two_row_table.set_col_spacings (0);
 930         two_row_table.set_homogeneous (true);
 931
 932         for (int i = 0; i < 5; ++i) {
 933                 buttons[i] = manage (new Button (X_("f")));
 934                 buttons[i]->set_name ("TrackMuteButton");
 935         }
 936
 937         Gtk::Requisition req;
 938
 939         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 940
 941         one_row_table.show_all ();
 942         one_row_table.size_request (req);
 943
 944
 945         // height required to show 1 row of buttons
 946
 947         hSmaller = req.height + extra_height;
 948
 949         window.remove ();
 950         window.add (two_row_table);
 951
 952         two_row_table.attach (*buttons[1], 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 953         two_row_table.attach (*buttons[2], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 954         two_row_table.attach (*buttons[3], 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 955         two_row_table.attach (*buttons[4], 8, 9, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 956
 957         two_row_table.show_all ();
 958         two_row_table.size_request (req);
 959
 960         // height required to show all normal buttons
 961
 962         hNormal = req.height + extra_height;
 963
 964         // these heights are all just larger than normal. no more
 965         // elements are visible (yet).
 966
 967         hLarger = hNormal + 50;
 968         hLarge = hNormal + 150;
 969         hLargest = hNormal + 250;
 970
 971         // height required to show track name
 972
 973         hSmall = 27;
 974 }
 975
 976 void
 977 TimeAxisView::show_name_label ()
 978 {
 979         if (!(name_packing & NameLabelPacked)) {
 980                 name_hbox.pack_start (name_label, true, true);
 981                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
 982                 name_hbox.show ();
 983                 name_label.show ();
 984         }
 985 }
 986
 987 void
 988 TimeAxisView::show_name_entry ()
 989 {
 990         if (!(name_packing & NameEntryPacked)) {
 991                 name_hbox.pack_start (name_entry, true, true);
 992                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
 993                 name_hbox.show ();
 994                 name_entry.show ();
 995         }
 996 }
 997
 998 void
 999 TimeAxisView::hide_name_label ()
1000 {
1001         if (name_packing & NameLabelPacked) {
1002                 name_hbox.remove (name_label);
1003                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1004         }
1005 }
1006
1007 void
1008 TimeAxisView::hide_name_entry ()
1009 {
1010         if (name_packing & NameEntryPacked) {
1011                 name_hbox.remove (name_entry);
1012                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1013         }
1014 }
1015
1016 void
1017 TimeAxisView::color_handler (ColorID id, uint32_t val)
1018 {
1019         switch (id) {
1020         case cSelectionRectFill:
1021                 break;
1022         case cSelectionRectOutline:
1023                 break;
1024         case cSelectionStartFill:
1025                 break;
1026         case cSelectionStartOutline:
1027                 break;
1028         case cSelectionEndFill:
1029                 break;
1030         case cSelectionEndOutline:
1031                 break;
1032         default:
1033                 break;
1034         }
1035 }