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 */
  19
  20 #include <cstdlib>
  21 #include <cmath>
  22 #include <algorithm>
  23 #include <string>
  24 #include <list>
  25
  26 #include <libgnomecanvasmm.h>
  27 #include <libgnomecanvasmm/canvas.h>
  28 #include <libgnomecanvasmm/item.h>
  29
  30 #include <pbd/error.h>
  31
  32 #include <gtkmm2ext/utils.h>
  33 #include <gtkmm2ext/selector.h>
  34 #include <gtkmm2ext/stop_signal.h>
  35
  36 #include <ardour/session.h>
  37 #include <ardour/utils.h>
  38 #include <ardour/ladspa_plugin.h>
  39 #include <ardour/insert.h>
  40 #include <ardour/location.h>
  41
  42 #include "ardour_ui.h"
  43 #include "public_editor.h"
  44 #include "time_axis_view.h"
  45 #include "simplerect.h"
  46 #include "selection.h"
  47 #include "keyboard.h"
  48 #include "rgb_macros.h"
  49 #include "utils.h"
  50
  51 #include "i18n.h"
  52
  53 using namespace Gtk;
  54 using namespace Gdk;
  55 using namespace sigc;
  56 using namespace ARDOUR;
  57 using namespace PBD;
  58 using namespace Editing;
  59 using namespace ArdourCanvas;
  60
  61 const double trim_handle_size = 6.0; /* pixels */
  62
  63 uint32_t TimeAxisView::hLargest = 0;
  64 uint32_t TimeAxisView::hLarge = 0;
  65 uint32_t TimeAxisView::hLarger = 0;
  66 uint32_t TimeAxisView::hNormal = 0;
  67 uint32_t TimeAxisView::hSmaller = 0;
  68 uint32_t TimeAxisView::hSmall = 0;
  69 bool TimeAxisView::need_size_info = true;
  70
  71 TimeAxisView::TimeAxisView (ARDOUR::Session& sess, PublicEditor& ed, TimeAxisView* rent, Canvas& canvas)
  72         : AxisView (sess),
  73           editor (ed),
  74           controls_table (2, 8)
  75 {
  76         if (need_size_info) {
  77                 compute_controls_size_info ();
  78                 need_size_info = false;
  79         }
  80
  81         canvas_display = new Group (*canvas.root(), 0.0, 0.0);
  82
  83         selection_group = new Group (*canvas_display);
  84         selection_group->hide();
  85
  86         control_parent = 0;
  87         display_menu = 0;
  88         size_menu = 0;
  89         _marked_for_display = false;
  90         _hidden = false;
  91         height = 0;
  92         effective_height = 0;
  93         parent = rent;
  94         _has_state = false;
  95         last_name_entry_key_press_event = 0;
  96         name_packing = NamePackingBits (0);
  97
  98         /*
  99           Create the standard LHS Controls
 100           We create the top-level container and name add the name label here,
 101           subclasses can add to the layout as required
 102         */
 103
 104         name_entry.set_name ("EditorTrackNameDisplay");
 105         name_entry.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_release));
 106         name_entry.signal_button_press_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_press));
 107         name_entry.signal_key_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_key_release));
 108         name_entry.signal_activate().connect (mem_fun(*this, &TimeAxisView::name_entry_activated));
 109         name_entry.signal_focus_in_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 110         name_entry.signal_focus_out_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 111         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 112
 113         name_label.set_name ("TrackLabel");
 114         name_label.set_alignment (0.0, 0.5);
 115
 116         /* typically, either name_label OR name_entry are visible,
 117            but not both. its up to derived classes to show/hide them as they
 118            wish.
 119         */
 120
 121         name_hbox.show ();
 122
 123         controls_table.set_border_width (2);
 124         controls_table.set_row_spacings (0);
 125         controls_table.set_col_spacings (0);
 126         controls_table.set_homogeneous (true);
 127
 128         controls_table.attach (name_hbox, 0, 4, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);
 129         controls_table.show_all ();
 130         controls_table.set_no_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_ETCHED_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         Selection::Operation op = Keyboard::selection_type (ev->state);
 289         editor.set_selected_track (*this, op, false);
 290 }
 291
 292 void
 293 TimeAxisView::hide ()
 294 {
 295         if (_hidden) {
 296                 return;
 297         }
 298
 299         canvas_display->hide();
 300         controls_frame.hide ();
 301
 302         if (control_parent) {
 303                 control_parent->remove (controls_frame);
 304                 control_parent = 0;
 305         }
 306
 307         y_position = -1;
 308         _hidden = true;
 309
 310         /* now hide children */
 311
 312         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 313                 (*i)->hide ();
 314         }
 315
 316         Hiding ();
 317 }
 318
 319 void
 320 TimeAxisView::step_height (bool bigger)
 321 {
 322
 323        if (height == hLargest) {
 324                if (!bigger) set_height (Large);
 325                return;
 326        }
 327        if (height == hLarge) {
 328                if (bigger) set_height (Largest);
 329                 else set_height (Larger);
 330                return;
 331        }
 332        if (height == hLarger) {
 333                 if (bigger) set_height (Large);
 334                 else set_height (Normal);
 335                return;
 336        }
 337        if (height == hNormal) {
 338                 if (bigger) set_height (Larger);
 339                 else set_height (Smaller);
 340                return;
 341        }
 342        if (height == hSmaller) {
 343                 if (bigger) set_height (Normal);
 344                 else set_height (Small);
 345                return;
 346        }
 347        if (height == hSmall) {
 348                 if (bigger) set_height (Smaller);
 349                return;
 350        }
 351 }
 352
 353 void
 354 TimeAxisView::set_height (TrackHeight h)
 355 {
 356         height_style = h;
 357         set_height_pixels (height_to_pixels (h));
 358 }
 359
 360 void
 361 TimeAxisView::set_height_pixels (uint32_t h)
 362 {
 363         height = h;
 364         controls_frame.set_size_request (-1, height + ((order == 0) ? 1 : 0));
 365
 366         if (canvas_item_visible (selection_group)) {
 367                 /* resize the selection rect */
 368                 show_selection (editor.get_selection().time);
 369         }
 370 }
 371
 372 bool
 373 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 374 {
 375         PublicEditor::TrackViewList *allviews = 0;
 376         PublicEditor::TrackViewList::iterator i;
 377
 378         switch (ev->keyval) {
 379         case GDK_Escape:
 380                 name_entry.select_region (0,0);
 381                 controls_ebox.grab_focus ();
 382                 name_entry_changed ();
 383                 return true;
 384
 385         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 386          * generates a different ev->keyval, rather than setting
 387          * ev->state.
 388          */
 389         case GDK_ISO_Left_Tab:
 390         case GDK_Tab:
 391                 name_entry_changed ();
 392                 allviews = editor.get_valid_views (0);
 393                 if (allviews != 0) {
 394                         i = find (allviews->begin(), allviews->end(), this);
 395                         if (ev->keyval == GDK_Tab) {
 396                                 if (i != allviews->end()) {
 397                                         do {
 398                                                 if (++i == allviews->end()) { return true; }
 399                                         } while((*i)->hidden());
 400                                 }
 401                         } else {
 402                                 if (i != allviews->begin()) {
 403                                         do {
 404                                                 if (--i == allviews->begin()) { return true; }
 405                                         } while ((*i)->hidden());
 406                                 }
 407                         }
 408
 409                         if ((*i)->height_style == Small) {
 410                                 (*i)->set_height(Smaller);
 411                         }
 412
 413                         (*i)->name_entry.grab_focus();
 414                 }
 415                 return true;
 416
 417         case GDK_Up:
 418         case GDK_Down:
 419                 name_entry_changed ();
 420                 return true;
 421
 422         default:
 423                 break;
 424         }
 425
 426 #ifdef TIMEOUT_NAME_EDIT
 427         /* adapt the timeout to reflect the user's typing speed */
 428
 429         guint32 name_entry_timeout;
 430
 431         if (last_name_entry_key_press_event) {
 432                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 433                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 434         } else {
 435                 /* start with a 1 second timeout */
 436                 name_entry_timeout = 1000;
 437         }
 438
 439         last_name_entry_key_press_event = ev->time;
 440
 441         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 442
 443         name_entry_key_timeout.disconnect();
 444         name_entry_key_timeout = Glib::signal_timeout().connect (mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 445 #endif
 446
 447         return false;
 448 }
 449
 450 bool
 451 TimeAxisView::name_entry_focus_in (GdkEventFocus* ev)
 452 {
 453         name_entry.select_region (0, -1);
 454         name_entry.set_name ("EditorActiveTrackNameDisplay");
 455         return false;
 456 }
 457
 458 bool
 459 TimeAxisView::name_entry_focus_out (GdkEventFocus* ev)
 460 {
 461         /* clean up */
 462
 463         last_name_entry_key_press_event = 0;
 464         name_entry_key_timeout.disconnect ();
 465         name_entry.set_name ("EditorTrackNameDisplay");
 466         name_entry.select_region (0,0);
 467
 468         /* do the real stuff */
 469
 470         name_entry_changed ();
 471
 472         return false;
 473 }
 474
 475 bool
 476 TimeAxisView::name_entry_key_timed_out ()
 477 {
 478         name_entry_activated();
 479         return false;
 480 }
 481
 482 void
 483 TimeAxisView::name_entry_activated ()
 484 {
 485         controls_ebox.grab_focus();
 486 }
 487
 488 void
 489 TimeAxisView::name_entry_changed ()
 490 {
 491 }
 492
 493 bool
 494 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 495 {
 496         if (ev->button == 3) {
 497                 return true;
 498         }
 499         return false;
 500 }
 501
 502 bool
 503 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 504 {
 505         if (ev->button == 3) {
 506                 popup_display_menu (ev->time);
 507                 return true;
 508         }
 509         return false;
 510 }
 511
 512 void
 513 TimeAxisView::popup_display_menu (guint32 when)
 514 {
 515         if (display_menu == 0) {
 516                 build_display_menu ();
 517         }
 518
 519         if (!get_selected()) {
 520                 editor.set_selected_track (*this, Selection::Set);
 521         }
 522
 523         display_menu->popup (1, when);
 524 }
 525
 526 gint
 527 TimeAxisView::size_click (GdkEventButton *ev)
 528 {
 529         editor.set_selected_track (*this, Selection::Add);
 530         popup_size_menu (ev->time);
 531         return TRUE;
 532 }
 533
 534 void
 535 TimeAxisView::popup_size_menu (guint32 when)
 536 {
 537         if (size_menu == 0) {
 538                 build_size_menu ();
 539         }
 540         size_menu->popup (1, when);
 541 }
 542
 543 void
 544 TimeAxisView::set_selected (bool yn)
 545 {
 546         AxisView::set_selected (yn);
 547
 548         if (_selected) {
 549                 controls_ebox.set_name (controls_base_selected_name);
 550                 controls_frame.set_name (controls_base_selected_name);
 551
 552                 /* propagate any existing selection, if the mode is right */
 553
 554                 if (editor.current_mouse_mode() == Editing::MouseRange && !editor.get_selection().time.empty()) {
 555                         show_selection (editor.get_selection().time);
 556                 }
 557
 558         } else {
 559                 controls_ebox.set_name (controls_base_unselected_name);
 560                 controls_frame.set_name (controls_base_unselected_name);
 561
 562                 hide_selection ();
 563
 564                 /* children will be set for the yn=true case. but when deselecting
 565                    the editor only has a list of top-level trackviews, so we
 566                    have to do this here.
 567                 */
 568
 569                 for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 570                         (*i)->set_selected (false);
 571                 }
 572
 573
 574         }
 575 }
 576
 577 void
 578 TimeAxisView::build_size_menu ()
 579 {
 580         using namespace Menu_Helpers;
 581
 582         size_menu = new Menu;
 583         size_menu->set_name ("ArdourContextMenu");
 584         MenuList& items = size_menu->items();
 585
 586         items.push_back (MenuElem (_("Largest"), bind (mem_fun (*this, &TimeAxisView::set_height), Largest)));
 587         items.push_back (MenuElem (_("Large"), bind (mem_fun (*this, &TimeAxisView::set_height), Large)));
 588         items.push_back (MenuElem (_("Larger"), bind (mem_fun (*this, &TimeAxisView::set_height), Larger)));
 589         items.push_back (MenuElem (_("Normal"), bind (mem_fun (*this, &TimeAxisView::set_height), Normal)));
 590         items.push_back (MenuElem (_("Smaller"), bind (mem_fun (*this, &TimeAxisView::set_height),Smaller)));
 591         items.push_back (MenuElem (_("Small"), bind (mem_fun (*this, &TimeAxisView::set_height), Small)));
 592 }
 593
 594 void
 595 TimeAxisView::build_display_menu ()
 596 {
 597         using namespace Menu_Helpers;
 598
 599         display_menu = new Menu;
 600         display_menu->set_name ("ArdourContextMenu");
 601
 602         // Just let implementing classes define what goes into the manu
 603 }
 604
 605 void
 606 TimeAxisView::set_samples_per_unit (double spu)
 607 {
 608         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 609                 (*i)->set_samples_per_unit (spu);
 610         }
 611 }
 612
 613 void
 614 TimeAxisView::show_timestretch (nframes_t start, nframes_t end)
 615 {
 616         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 617                 (*i)->show_timestretch (start, end);
 618         }
 619 }
 620
 621 void
 622 TimeAxisView::hide_timestretch ()
 623 {
 624         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 625                 (*i)->hide_timestretch ();
 626         }
 627 }
 628
 629 void
 630 TimeAxisView::show_selection (TimeSelection& ts)
 631 {
 632         double x1;
 633         double x2;
 634         double y2;
 635         SelectionRect *rect;
 636
 637         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 638                 (*i)->show_selection (ts);
 639         }
 640
 641         if (canvas_item_visible (selection_group)) {
 642                 while (!used_selection_rects.empty()) {
 643                         free_selection_rects.push_front (used_selection_rects.front());
 644                         used_selection_rects.pop_front();
 645                         free_selection_rects.front()->rect->hide();
 646                         free_selection_rects.front()->start_trim->hide();
 647                         free_selection_rects.front()->end_trim->hide();
 648                 }
 649                 selection_group->hide();
 650         }
 651
 652         selection_group->show();
 653         selection_group->raise_to_top();
 654
 655         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 656                 nframes_t start, end, cnt;
 657
 658                 start = (*i).start;
 659                 end = (*i).end;
 660                 cnt = end - start + 1;
 661
 662                 rect = get_selection_rect ((*i).id);
 663
 664                 x1 = editor.frame_to_unit (start);
 665                 x2 = editor.frame_to_unit (start + cnt - 1);
 666                 y2 = height;
 667
 668                 rect->rect->property_x1() = x1;
 669                 rect->rect->property_y1() = 1.0;
 670                 rect->rect->property_x2() = x2;
 671                 rect->rect->property_y2() = y2;
 672
 673                 // trim boxes are at the top for selections
 674
 675                 if (x2 > x1) {
 676                         rect->start_trim->property_x1() = x1;
 677                         rect->start_trim->property_y1() = 1.0;
 678                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 679                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 680
 681                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 682                         rect->end_trim->property_y1() = 1.0;
 683                         rect->end_trim->property_x2() = x2;
 684                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 685
 686                         rect->start_trim->show();
 687                         rect->end_trim->show();
 688                 } else {
 689                         rect->start_trim->hide();
 690                         rect->end_trim->hide();
 691                 }
 692
 693                 rect->rect->show ();
 694                 used_selection_rects.push_back (rect);
 695         }
 696 }
 697
 698 void
 699 TimeAxisView::reshow_selection (TimeSelection& ts)
 700 {
 701         show_selection (ts);
 702
 703         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 704                 (*i)->show_selection (ts);
 705         }
 706 }
 707
 708 void
 709 TimeAxisView::hide_selection ()
 710 {
 711         if (canvas_item_visible (selection_group)) {
 712                 while (!used_selection_rects.empty()) {
 713                         free_selection_rects.push_front (used_selection_rects.front());
 714                         used_selection_rects.pop_front();
 715                         free_selection_rects.front()->rect->hide();
 716                         free_selection_rects.front()->start_trim->hide();
 717                         free_selection_rects.front()->end_trim->hide();
 718                 }
 719                 selection_group->hide();
 720         }
 721
 722         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 723                 (*i)->hide_selection ();
 724         }
 725 }
 726
 727 void
 728 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 729 {
 730         /* find the selection rect this is for. we have the item corresponding to one
 731            of the trim handles.
 732          */
 733
 734         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 735                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 736
 737                         /* make one trim handle be "above" the other so that if they overlap,
 738                            the top one is the one last used.
 739                         */
 740
 741                         (*i)->rect->raise_to_top ();
 742                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 743                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 744
 745                         break;
 746                 }
 747         }
 748 }
 749
 750 SelectionRect *
 751 TimeAxisView::get_selection_rect (uint32_t id)
 752 {
 753         SelectionRect *rect;
 754
 755         /* check to see if we already have a visible rect for this particular selection ID */
 756
 757         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 758                 if ((*i)->id == id) {
 759                         return (*i);
 760                 }
 761         }
 762
 763         /* ditto for the free rect list */
 764
 765         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 766                 if ((*i)->id == id) {
 767                         SelectionRect* ret = (*i);
 768                         free_selection_rects.erase (i);
 769                         return ret;
 770                 }
 771         }
 772
 773         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 774
 775         if (free_selection_rects.empty()) {
 776
 777                 rect = new SelectionRect;
 778
 779                 rect->rect = new SimpleRect (*selection_group);
 780                 rect->rect->property_x1() = 0.0;
 781                 rect->rect->property_y1() = 0.0;
 782                 rect->rect->property_x2() = 0.0;
 783                 rect->rect->property_y2() = 0.0;
 784                 rect->rect->property_fill_color_rgba() = color_map[cSelectionRectFill];
 785                 rect->rect->property_outline_color_rgba() = color_map[cSelectionRectOutline];
 786
 787                 rect->start_trim = new SimpleRect (*selection_group);
 788                 rect->start_trim->property_x1() = 0.0;
 789                 rect->start_trim->property_x2() = 0.0;
 790                 rect->start_trim->property_fill_color_rgba() = color_map[cSelectionStartFill];
 791                 rect->start_trim->property_outline_color_rgba() = color_map[cSelectionStartOutline];
 792
 793                 rect->end_trim = new SimpleRect (*selection_group);
 794                 rect->end_trim->property_x1() = 0.0;
 795                 rect->end_trim->property_x2() = 0.0;
 796                 rect->end_trim->property_fill_color_rgba() = color_map[cSelectionEndFill];
 797                 rect->end_trim->property_outline_color_rgba() = color_map[cSelectionEndOutline];
 798
 799                 free_selection_rects.push_front (rect);
 800
 801                 rect->rect->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 802                 rect->start_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 803                 rect->end_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 804         }
 805
 806         rect = free_selection_rects.front();
 807         rect->id = id;
 808         free_selection_rects.pop_front();
 809         return rect;
 810 }
 811
 812 bool
 813 TimeAxisView::is_child (TimeAxisView* tav)
 814 {
 815         return find (children.begin(), children.end(), tav) != children.end();
 816 }
 817
 818 void
 819 TimeAxisView::add_child (TimeAxisView* child)
 820 {
 821         children.push_back (child);
 822 }
 823
 824 void
 825 TimeAxisView::remove_child (TimeAxisView* child)
 826 {
 827         vector<TimeAxisView*>::iterator i;
 828
 829         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 830                 children.erase (i);
 831         }
 832 }
 833
 834 void
 835 TimeAxisView::get_selectables (nframes_t start, nframes_t end, double top, double bot, list<Selectable*>& result)
 836 {
 837         return;
 838 }
 839
 840 void
 841 TimeAxisView::get_inverted_selectables (Selection& sel, list<Selectable*>& result)
 842 {
 843         return;
 844 }
 845
 846 bool
 847 TimeAxisView::touched (double top, double bot)
 848 {
 849         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 850            y_position is the "origin" or "top" of the track.
 851          */
 852
 853         double mybot = y_position + height;
 854
 855         return ((y_position <= bot && y_position >= top) ||
 856                 ((mybot <= bot) && (top < mybot)) ||
 857                 (mybot >= bot && y_position < top));
 858 }
 859
 860 void
 861 TimeAxisView::set_parent (TimeAxisView& p)
 862 {
 863         parent = &p;
 864 }
 865
 866 bool
 867 TimeAxisView::has_state () const
 868 {
 869         return _has_state;
 870 }
 871
 872 TimeAxisView*
 873 TimeAxisView::get_parent_with_state ()
 874 {
 875         if (parent == 0) {
 876                 return 0;
 877         }
 878
 879         if (parent->has_state()) {
 880                 return parent;
 881         }
 882
 883         return parent->get_parent_with_state ();
 884 }
 885
 886 void
 887 TimeAxisView::set_state (const XMLNode& node)
 888 {
 889         const XMLProperty *prop;
 890
 891         if ((prop = node.property ("track_height")) != 0) {
 892
 893                 if (prop->value() == "largest") {
 894                         set_height (Largest);
 895                 } else if (prop->value() == "large") {
 896                         set_height (Large);
 897                 } else if (prop->value() == "larger") {
 898                         set_height (Larger);
 899                 } else if (prop->value() == "normal") {
 900                         set_height (Normal);
 901                 } else if (prop->value() == "smaller") {
 902                         set_height (Smaller);
 903                 } else if (prop->value() == "small") {
 904                         set_height (Small);
 905                 } else {
 906                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
 907                         set_height (Normal);
 908                 }
 909
 910         } else {
 911                 set_height (Normal);
 912         }
 913 }
 914
 915 void
 916 TimeAxisView::reset_height()
 917 {
 918         set_height_pixels (height);
 919
 920         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 921                 (*i)->set_height_pixels ((TrackHeight)(*i)->height);
 922         }
 923 }
 924
 925 uint32_t
 926 TimeAxisView::height_to_pixels (TrackHeight h)
 927 {
 928         switch (h) {
 929         case Largest:
 930                 return hLargest;
 931         case Large:
 932                 return hLarge;
 933         case Larger:
 934                 return hLarger;
 935         case Normal:
 936                 return hNormal;
 937         case Smaller:
 938                 return hSmaller;
 939         case Small:
 940                 return hSmall;
 941         }
 942
 943         // what is wrong with gcc ?
 944
 945         return hNormal;
 946 }
 947
 948 void
 949 TimeAxisView::compute_controls_size_info ()
 950 {
 951         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
 952         Gtk::Table two_row_table (2, 8);
 953         Gtk::Table one_row_table (1, 8);
 954         Button* buttons[5];
 955         const int border_width = 2;
 956         const int extra_height = (2 * border_width) + 2; // 2 pixels for the controls frame
 957
 958         window.add (one_row_table);
 959
 960         one_row_table.set_border_width (border_width);
 961         one_row_table.set_row_spacings (0);
 962         one_row_table.set_col_spacings (0);
 963         one_row_table.set_homogeneous (true);
 964
 965         two_row_table.set_border_width (border_width);
 966         two_row_table.set_row_spacings (0);
 967         two_row_table.set_col_spacings (0);
 968         two_row_table.set_homogeneous (true);
 969
 970         for (int i = 0; i < 5; ++i) {
 971                 buttons[i] = manage (new Button (X_("f")));
 972                 buttons[i]->set_name ("TrackMuteButton");
 973         }
 974
 975         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 976
 977         one_row_table.show_all ();
 978         Gtk::Requisition req(one_row_table.size_request ());
 979
 980
 981         // height required to show 1 row of buttons
 982
 983         hSmaller = req.height + extra_height;
 984
 985         window.remove ();
 986         window.add (two_row_table);
 987
 988         two_row_table.attach (*buttons[1], 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 989         two_row_table.attach (*buttons[2], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 990         two_row_table.attach (*buttons[3], 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 991         two_row_table.attach (*buttons[4], 8, 9, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 992
 993         two_row_table.show_all ();
 994         req = two_row_table.size_request ();
 995
 996         // height required to show all normal buttons
 997
 998         hNormal = req.height + extra_height;
 999
1000         // these heights are all just larger than normal. no more
1001         // elements are visible (yet).
1002
1003         hLarger = hNormal + 50;
1004         hLarge = hNormal + 150;
1005         hLargest = hNormal + 250;
1006
1007         // height required to show track name
1008
1009         hSmall = 27;
1010 }
1011
1012 void
1013 TimeAxisView::show_name_label ()
1014 {
1015         if (!(name_packing & NameLabelPacked)) {
1016                 name_hbox.pack_start (name_label, true, true);
1017                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1018                 name_hbox.show ();
1019                 name_label.show ();
1020         }
1021 }
1022
1023 void
1024 TimeAxisView::show_name_entry ()
1025 {
1026         if (!(name_packing & NameEntryPacked)) {
1027                 name_hbox.pack_start (name_entry, true, true);
1028                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1029                 name_hbox.show ();
1030                 name_entry.show ();
1031         }
1032 }
1033
1034 void
1035 TimeAxisView::hide_name_label ()
1036 {
1037         if (name_packing & NameLabelPacked) {
1038                 name_hbox.remove (name_label);
1039                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1040         }
1041 }
1042
1043 void
1044 TimeAxisView::hide_name_entry ()
1045 {
1046         if (name_packing & NameEntryPacked) {
1047                 name_hbox.remove (name_entry);
1048                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1049         }
1050 }
1051
1052 void
1053 TimeAxisView::color_handler (ColorID id, uint32_t val)
1054 {
1055         switch (id) {
1056         case cSelectionRectFill:
1057                 break;
1058         case cSelectionRectOutline:
1059                 break;
1060         case cSelectionStartFill:
1061                 break;
1062         case cSelectionStartOutline:
1063                 break;
1064         case cSelectionEndFill:
1065                 break;
1066         case cSelectionEndOutline:
1067                 break;
1068         default:
1069                 break;
1070         }
1071 }
1072
1073 TimeAxisView*
1074 TimeAxisView::covers_y_position (double y)
1075 {
1076         if (hidden()) {
1077                 return 0;
1078         }
1079
1080         if (y_position <= y && y < (y_position + height)) {
1081                 return this;
1082         }
1083
1084         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
1085                 TimeAxisView* tv;
1086
1087                 if ((tv = (*i)->covers_y_position (y)) != 0) {
1088                         return tv;
1089                 }
1090         }
1091
1092         return 0;
1093 }