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/processor.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           height_style(Small),
  75           y_position(0),
  76           order(0),
  77           controls_table (2, 7)
  78 {
  79         if (need_size_info) {
  80                 compute_controls_size_info ();
  81                 need_size_info = false;
  82         }
  83
  84         canvas_display = new Group (*canvas.root(), 0.0, 0.0);
  85
  86         selection_group = new Group (*canvas_display);
  87         selection_group->hide();
  88
  89         control_parent = 0;
  90         display_menu = 0;
  91         size_menu = 0;
  92         _marked_for_display = false;
  93         _hidden = false;
  94         height = 0;
  95         effective_height = 0;
  96         parent = rent;
  97         _has_state = false;
  98         last_name_entry_key_press_event = 0;
  99         name_packing = NamePackingBits (0);
 100
 101         /*
 102           Create the standard LHS Controls
 103           We create the top-level container and name add the name label here,
 104           subclasses can add to the layout as required
 105         */
 106
 107         name_entry.set_name ("EditorTrackNameDisplay");
 108         name_entry.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_release));
 109         name_entry.signal_button_press_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_press));
 110         name_entry.signal_key_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_key_release));
 111         name_entry.signal_activate().connect (mem_fun(*this, &TimeAxisView::name_entry_activated));
 112         name_entry.signal_focus_in_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 113         name_entry.signal_focus_out_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 114         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 115
 116         name_label.set_name ("TrackLabel");
 117         name_label.set_alignment (0.0, 0.5);
 118
 119         /* typically, either name_label OR name_entry are visible,
 120            but not both. its up to derived classes to show/hide them as they
 121            wish.
 122         */
 123
 124         name_hbox.show ();
 125
 126         controls_table.set_border_width (2);
 127         controls_table.set_row_spacings (0);
 128         controls_table.set_col_spacings (0);
 129         controls_table.set_homogeneous (true);
 130
 131         controls_table.attach (name_hbox, 0, 4, 0, 1, Gtk::SHRINK|Gtk::EXPAND, Gtk::SHRINK|Gtk::EXPAND);
 132         controls_table.show_all ();
 133         controls_table.set_no_show_all ();
 134
 135         controls_vbox.pack_start (controls_table, false, false);
 136         controls_vbox.show ();
 137
 138         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 139         controls_ebox.add (controls_vbox);
 140         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 141         controls_ebox.set_flags (CAN_FOCUS);
 142
 143         controls_ebox.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 144         controls_ebox.signal_scroll_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 145
 146         controls_lhs_pad.set_name ("TimeAxisViewControlsPadding");
 147         controls_hbox.pack_start (controls_lhs_pad,false,false);
 148         controls_hbox.pack_start (controls_ebox,true,true);
 149         controls_hbox.show ();
 150
 151         //controls_frame.add (controls_hbox);
 152         //controls_frame.set_name ("TimeAxisViewControlsBaseUnselected");
 153         //controls_frame.set_shadow_type (Gtk::SHADOW_ETCHED_OUT);
 154
 155         ColorsChanged.connect (mem_fun (*this, &TimeAxisView::color_handler));
 156 }
 157
 158 TimeAxisView::~TimeAxisView()
 159 {
 160         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 161                 delete (*i)->rect;
 162                 delete (*i)->start_trim;
 163                 delete (*i)->end_trim;
 164
 165         }
 166
 167         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 168                 delete (*i)->rect;
 169                 delete (*i)->start_trim;
 170                 delete (*i)->end_trim;
 171         }
 172
 173         if (selection_group) {
 174                 delete selection_group;
 175                 selection_group = 0;
 176         }
 177
 178         if (canvas_display) {
 179                 delete canvas_display;
 180                 canvas_display = 0;
 181         }
 182
 183         if (display_menu) {
 184                 delete display_menu;
 185                 display_menu = 0;
 186         }
 187 }
 188
 189 guint32
 190 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 191 {
 192         gdouble ix1, ix2, iy1, iy2;
 193         effective_height = 0;
 194
 195         if (control_parent) {
 196                 control_parent->reorder_child (controls_hbox, nth);
 197         } else {
 198                 control_parent = parent;
 199                 parent->pack_start (controls_hbox, false, false);
 200                 parent->reorder_child (controls_hbox, nth);
 201         }
 202         controls_hbox.show ();
 203         controls_ebox.show ();
 204
 205         /* the coordinates used here are in the system of the
 206            item's parent ...
 207         */
 208
 209         canvas_display->get_bounds (ix1, iy1, ix2, iy2);
 210         Group* pg = canvas_display->property_parent();
 211         pg->i2w (ix1, iy1);
 212
 213         if (iy1 < 0) {
 214                 iy1 = 0;
 215         }
 216
 217         canvas_display->move (0.0, y - iy1);
 218         canvas_display->show();/* XXX not necessary */
 219         y_position = y;
 220         order = nth;
 221         _hidden = false;
 222
 223         /* height in pixels depends on _order, so update it now we've changed _order */
 224         set_height (height_style);
 225
 226         effective_height = height;
 227
 228         /* now show children */
 229
 230         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 231
 232                 if ((*i)->marked_for_display()) {
 233                         (*i)->canvas_display->show();
 234                 }
 235
 236                 if (canvas_item_visible ((*i)->canvas_display)) {
 237                         ++nth;
 238                         effective_height += (*i)->show_at (y + effective_height, nth, parent);
 239                 }
 240         }
 241
 242         return effective_height;
 243 }
 244
 245 bool
 246 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 247 {
 248         switch (ev->direction) {
 249         case GDK_SCROLL_UP:
 250                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 251                         step_height (true);
 252                         return true;
 253                 }
 254                 break;
 255
 256         case GDK_SCROLL_DOWN:
 257                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 258                         step_height (false);
 259                         return true;
 260                 }
 261                 break;
 262
 263         default:
 264                 /* no handling for left/right, yet */
 265                 break;
 266         }
 267
 268         return false;
 269 }
 270
 271 bool
 272 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 273 {
 274         switch (ev->button) {
 275         case 1:
 276                 selection_click (ev);
 277                 break;
 278
 279         case 3:
 280                 popup_display_menu (ev->time);
 281                 break;
 282         }
 283
 284         return true;
 285 }
 286
 287 void
 288 TimeAxisView::selection_click (GdkEventButton* ev)
 289 {
 290         Selection::Operation op = Keyboard::selection_type (ev->state);
 291         editor.set_selected_track (*this, op, false);
 292 }
 293
 294 void
 295 TimeAxisView::hide ()
 296 {
 297         if (_hidden) {
 298                 return;
 299         }
 300
 301         canvas_display->hide();
 302         controls_hbox.hide ();
 303
 304         if (control_parent) {
 305                 control_parent->remove (controls_hbox);
 306                 control_parent = 0;
 307         }
 308
 309         y_position = -1;
 310         _hidden = true;
 311
 312         /* now hide children */
 313
 314         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 315                 (*i)->hide ();
 316         }
 317
 318         Hiding ();
 319 }
 320
 321 void
 322 TimeAxisView::step_height (bool bigger)
 323 {
 324
 325        if (height == hLargest) {
 326                if (!bigger) set_height (Large);
 327                return;
 328        }
 329        if (height == hLarge) {
 330                if (bigger) set_height (Largest);
 331                 else set_height (Larger);
 332                return;
 333        }
 334        if (height == hLarger) {
 335                 if (bigger) set_height (Large);
 336                 else set_height (Normal);
 337                return;
 338        }
 339        if (height == hNormal) {
 340                 if (bigger) set_height (Larger);
 341                 else set_height (Smaller);
 342                return;
 343        }
 344        if (height == hSmaller) {
 345                 if (bigger) set_height (Normal);
 346                 else set_height (Small);
 347                return;
 348        }
 349        if (height == hSmall) {
 350                 if (bigger) set_height (Smaller);
 351                return;
 352        }
 353 }
 354
 355 void
 356 TimeAxisView::set_height (TrackHeight h)
 357 {
 358         height_style = h;
 359         set_height_pixels (height_to_pixels (h));
 360 }
 361
 362 void
 363 TimeAxisView::set_height_pixels (uint32_t h)
 364 {
 365         height = h;
 366         controls_hbox.set_size_request (-1, height + ((order == 0) ? 1 : 0));
 367         //cerr << "TimeAxisView::set_height_pixels() called h = " << h << endl;//DEBUG
 368         if (canvas_item_visible (selection_group)) {
 369                 /* resize the selection rect */
 370                 show_selection (editor.get_selection().time);
 371         }
 372
 373 }
 374
 375 bool
 376 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 377 {
 378         PublicEditor::TrackViewList *allviews = 0;
 379         PublicEditor::TrackViewList::iterator i;
 380
 381         switch (ev->keyval) {
 382         case GDK_Escape:
 383                 name_entry.select_region (0,0);
 384                 controls_ebox.grab_focus ();
 385                 name_entry_changed ();
 386                 return true;
 387
 388         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 389          * generates a different ev->keyval, rather than setting
 390          * ev->state.
 391          */
 392         case GDK_ISO_Left_Tab:
 393         case GDK_Tab:
 394                 name_entry_changed ();
 395                 allviews = editor.get_valid_views (0);
 396                 if (allviews != 0) {
 397                         i = find (allviews->begin(), allviews->end(), this);
 398                         if (ev->keyval == GDK_Tab) {
 399                                 if (i != allviews->end()) {
 400                                         do {
 401                                                 if (++i == allviews->end()) { return true; }
 402                                         } while((*i)->hidden());
 403                                 }
 404                         } else {
 405                                 if (i != allviews->begin()) {
 406                                         do {
 407                                                 if (--i == allviews->begin()) { return true; }
 408                                         } while ((*i)->hidden());
 409                                 }
 410                         }
 411
 412                         if ((*i)->height_style == Small) {
 413                                 (*i)->set_height(Smaller);
 414                         }
 415
 416                         (*i)->name_entry.grab_focus();
 417                 }
 418                 return true;
 419
 420         case GDK_Up:
 421         case GDK_Down:
 422                 name_entry_changed ();
 423                 return true;
 424
 425         default:
 426                 break;
 427         }
 428
 429 #ifdef TIMEOUT_NAME_EDIT
 430         /* adapt the timeout to reflect the user's typing speed */
 431
 432         guint32 name_entry_timeout;
 433
 434         if (last_name_entry_key_press_event) {
 435                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 436                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 437         } else {
 438                 /* start with a 1 second timeout */
 439                 name_entry_timeout = 1000;
 440         }
 441
 442         last_name_entry_key_press_event = ev->time;
 443
 444         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 445
 446         name_entry_key_timeout.disconnect();
 447         name_entry_key_timeout = Glib::signal_timeout().connect (mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 448 #endif
 449
 450         return false;
 451 }
 452
 453 bool
 454 TimeAxisView::name_entry_focus_in (GdkEventFocus* ev)
 455 {
 456         name_entry.select_region (0, -1);
 457         name_entry.set_name ("EditorActiveTrackNameDisplay");
 458         return false;
 459 }
 460
 461 bool
 462 TimeAxisView::name_entry_focus_out (GdkEventFocus* ev)
 463 {
 464         /* clean up */
 465
 466         last_name_entry_key_press_event = 0;
 467         name_entry_key_timeout.disconnect ();
 468         name_entry.set_name ("EditorTrackNameDisplay");
 469         name_entry.select_region (0,0);
 470
 471         /* do the real stuff */
 472
 473         name_entry_changed ();
 474
 475         return false;
 476 }
 477
 478 bool
 479 TimeAxisView::name_entry_key_timed_out ()
 480 {
 481         name_entry_activated();
 482         return false;
 483 }
 484
 485 void
 486 TimeAxisView::name_entry_activated ()
 487 {
 488         controls_ebox.grab_focus();
 489 }
 490
 491 void
 492 TimeAxisView::name_entry_changed ()
 493 {
 494 }
 495
 496 bool
 497 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 498 {
 499         if (ev->button == 3) {
 500                 return true;
 501         }
 502         return false;
 503 }
 504
 505 bool
 506 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 507 {
 508         if (ev->button == 3) {
 509                 popup_display_menu (ev->time);
 510                 return true;
 511         }
 512         return false;
 513 }
 514
 515 void
 516 TimeAxisView::popup_display_menu (guint32 when)
 517 {
 518         if (display_menu == 0) {
 519                 build_display_menu ();
 520         }
 521
 522         editor.set_selected_track (*this, Selection::Add);
 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         if (yn == _selected) {
 547                 return;
 548         }
 549
 550         Selectable::set_selected (yn);
 551
 552         if (_selected) {
 553                 controls_ebox.set_name (controls_base_selected_name);
 554                 controls_hbox.set_name (controls_base_selected_name);
 555
 556                 /* propagate any existing selection, if the mode is right */
 557
 558                 if (editor.current_mouse_mode() == Editing::MouseRange && !editor.get_selection().time.empty()) {
 559                         show_selection (editor.get_selection().time);
 560                 }
 561
 562         } else {
 563                 controls_ebox.set_name (controls_base_unselected_name);
 564                 controls_hbox.set_name (controls_base_unselected_name);
 565
 566                 hide_selection ();
 567
 568                 /* children will be set for the yn=true case. but when deselecting
 569                    the editor only has a list of top-level trackviews, so we
 570                    have to do this here.
 571                 */
 572
 573                 for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 574                         (*i)->set_selected (false);
 575                 }
 576         }
 577 }
 578
 579 void
 580 TimeAxisView::build_size_menu ()
 581 {
 582         using namespace Menu_Helpers;
 583
 584         size_menu = new Menu;
 585         size_menu->set_name ("ArdourContextMenu");
 586         MenuList& items = size_menu->items();
 587
 588         items.push_back (MenuElem (_("Largest"), bind (mem_fun (*this, &TimeAxisView::set_height), Largest)));
 589         items.push_back (MenuElem (_("Large"), bind (mem_fun (*this, &TimeAxisView::set_height), Large)));
 590         items.push_back (MenuElem (_("Larger"), bind (mem_fun (*this, &TimeAxisView::set_height), Larger)));
 591         items.push_back (MenuElem (_("Normal"), bind (mem_fun (*this, &TimeAxisView::set_height), Normal)));
 592         items.push_back (MenuElem (_("Smaller"), bind (mem_fun (*this, &TimeAxisView::set_height),Smaller)));
 593         items.push_back (MenuElem (_("Small"), bind (mem_fun (*this, &TimeAxisView::set_height), Small)));
 594 }
 595
 596 void
 597 TimeAxisView::build_display_menu ()
 598 {
 599         using namespace Menu_Helpers;
 600
 601         display_menu = new Menu;
 602         display_menu->set_name ("ArdourContextMenu");
 603
 604         // Just let implementing classes define what goes into the manu
 605 }
 606
 607 void
 608 TimeAxisView::set_samples_per_unit (double spu)
 609 {
 610         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 611                 (*i)->set_samples_per_unit (spu);
 612         }
 613 }
 614
 615 void
 616 TimeAxisView::show_timestretch (nframes_t start, nframes_t end)
 617 {
 618         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 619                 (*i)->show_timestretch (start, end);
 620         }
 621 }
 622
 623 void
 624 TimeAxisView::hide_timestretch ()
 625 {
 626         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 627                 (*i)->hide_timestretch ();
 628         }
 629 }
 630
 631 void
 632 TimeAxisView::show_selection (TimeSelection& ts)
 633 {
 634         double x1;
 635         double x2;
 636         double y2;
 637         SelectionRect *rect;
 638
 639         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 640                 (*i)->show_selection (ts);
 641         }
 642
 643         if (canvas_item_visible (selection_group)) {
 644                 while (!used_selection_rects.empty()) {
 645                         free_selection_rects.push_front (used_selection_rects.front());
 646                         used_selection_rects.pop_front();
 647                         free_selection_rects.front()->rect->hide();
 648                         free_selection_rects.front()->start_trim->hide();
 649                         free_selection_rects.front()->end_trim->hide();
 650                 }
 651                 selection_group->hide();
 652         }
 653
 654         selection_group->show();
 655         selection_group->raise_to_top();
 656
 657         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 658                 nframes_t start, end, cnt;
 659
 660                 start = (*i).start;
 661                 end = (*i).end;
 662                 cnt = end - start + 1;
 663
 664                 rect = get_selection_rect ((*i).id);
 665
 666                 x1 = editor.frame_to_unit (start);
 667                 x2 = editor.frame_to_unit (start + cnt - 1);
 668                 y2 = height;
 669
 670                 rect->rect->property_x1() = x1;
 671                 rect->rect->property_y1() = 1.0;
 672                 rect->rect->property_x2() = x2;
 673                 rect->rect->property_y2() = y2;
 674
 675                 // trim boxes are at the top for selections
 676
 677                 if (x2 > x1) {
 678                         rect->start_trim->property_x1() = x1;
 679                         rect->start_trim->property_y1() = 1.0;
 680                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 681                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 682
 683                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 684                         rect->end_trim->property_y1() = 1.0;
 685                         rect->end_trim->property_x2() = x2;
 686                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 687
 688                         rect->start_trim->show();
 689                         rect->end_trim->show();
 690                 } else {
 691                         rect->start_trim->hide();
 692                         rect->end_trim->hide();
 693                 }
 694
 695                 rect->rect->show ();
 696                 used_selection_rects.push_back (rect);
 697         }
 698 }
 699
 700 void
 701 TimeAxisView::reshow_selection (TimeSelection& ts)
 702 {
 703         show_selection (ts);
 704
 705         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 706                 (*i)->show_selection (ts);
 707         }
 708 }
 709
 710 void
 711 TimeAxisView::hide_selection ()
 712 {
 713         if (canvas_item_visible (selection_group)) {
 714                 while (!used_selection_rects.empty()) {
 715                         free_selection_rects.push_front (used_selection_rects.front());
 716                         used_selection_rects.pop_front();
 717                         free_selection_rects.front()->rect->hide();
 718                         free_selection_rects.front()->start_trim->hide();
 719                         free_selection_rects.front()->end_trim->hide();
 720                 }
 721                 selection_group->hide();
 722         }
 723
 724         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 725                 (*i)->hide_selection ();
 726         }
 727 }
 728
 729 void
 730 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 731 {
 732         /* find the selection rect this is for. we have the item corresponding to one
 733            of the trim handles.
 734          */
 735
 736         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 737                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 738
 739                         /* make one trim handle be "above" the other so that if they overlap,
 740                            the top one is the one last used.
 741                         */
 742
 743                         (*i)->rect->raise_to_top ();
 744                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 745                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 746
 747                         break;
 748                 }
 749         }
 750 }
 751
 752 SelectionRect *
 753 TimeAxisView::get_selection_rect (uint32_t id)
 754 {
 755         SelectionRect *rect;
 756
 757         /* check to see if we already have a visible rect for this particular selection ID */
 758
 759         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 760                 if ((*i)->id == id) {
 761                         return (*i);
 762                 }
 763         }
 764
 765         /* ditto for the free rect list */
 766
 767         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 768                 if ((*i)->id == id) {
 769                         SelectionRect* ret = (*i);
 770                         free_selection_rects.erase (i);
 771                         return ret;
 772                 }
 773         }
 774
 775         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 776
 777         if (free_selection_rects.empty()) {
 778
 779                 rect = new SelectionRect;
 780
 781                 rect->rect = new SimpleRect (*selection_group);
 782                 rect->rect->property_x1() = 0.0;
 783                 rect->rect->property_y1() = 0.0;
 784                 rect->rect->property_x2() = 0.0;
 785                 rect->rect->property_y2() = 0.0;
 786                 rect->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
 787                 rect->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 788
 789                 rect->start_trim = new SimpleRect (*selection_group);
 790                 rect->start_trim->property_x1() = 0.0;
 791                 rect->start_trim->property_x2() = 0.0;
 792                 rect->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 793                 rect->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 794
 795                 rect->end_trim = new SimpleRect (*selection_group);
 796                 rect->end_trim->property_x1() = 0.0;
 797                 rect->end_trim->property_x2() = 0.0;
 798                 rect->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 799                 rect->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 800
 801                 free_selection_rects.push_front (rect);
 802
 803                 rect->rect->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 804                 rect->start_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 805                 rect->end_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 806         }
 807
 808         rect = free_selection_rects.front();
 809         rect->id = id;
 810         free_selection_rects.pop_front();
 811         return rect;
 812 }
 813
 814 struct null_deleter { void operator()(void const *) const {} };
 815
 816 bool
 817 TimeAxisView::is_child (TimeAxisView* tav)
 818 {
 819         return find (children.begin(), children.end(), boost::shared_ptr<TimeAxisView>(tav, null_deleter())) != children.end();
 820 }
 821
 822 void
 823 TimeAxisView::add_child (boost::shared_ptr<TimeAxisView> child)
 824 {
 825         children.push_back (child);
 826 }
 827
 828 void
 829 TimeAxisView::remove_child (boost::shared_ptr<TimeAxisView> child)
 830 {
 831         Children::iterator i;
 832
 833         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 834                 children.erase (i);
 835         }
 836 }
 837
 838 void
 839 TimeAxisView::get_selectables (nframes_t start, nframes_t end, double top, double bot, list<Selectable*>& result)
 840 {
 841         return;
 842 }
 843
 844 void
 845 TimeAxisView::get_inverted_selectables (Selection& sel, list<Selectable*>& result)
 846 {
 847         return;
 848 }
 849
 850 bool
 851 TimeAxisView::touched (double top, double bot)
 852 {
 853         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 854            y_position is the "origin" or "top" of the track.
 855          */
 856
 857         double mybot = y_position + height;
 858
 859         return ((y_position <= bot && y_position >= top) ||
 860                 ((mybot <= bot) && (top < mybot)) ||
 861                 (mybot >= bot && y_position < top));
 862 }
 863
 864 void
 865 TimeAxisView::set_parent (TimeAxisView& p)
 866 {
 867         parent = &p;
 868 }
 869
 870 bool
 871 TimeAxisView::has_state () const
 872 {
 873         return _has_state;
 874 }
 875
 876 TimeAxisView*
 877 TimeAxisView::get_parent_with_state ()
 878 {
 879         if (parent == 0) {
 880                 return 0;
 881         }
 882
 883         if (parent->has_state()) {
 884                 return parent;
 885         }
 886
 887         return parent->get_parent_with_state ();
 888 }
 889
 890 void
 891 TimeAxisView::set_state (const XMLNode& node)
 892 {
 893         const XMLProperty *prop;
 894
 895         if ((prop = node.property ("track_height")) != 0) {
 896
 897                 if (prop->value() == "largest") {
 898                         set_height (Largest);
 899                 } else if (prop->value() == "large") {
 900                         set_height (Large);
 901                 } else if (prop->value() == "larger") {
 902                         set_height (Larger);
 903                 } else if (prop->value() == "normal") {
 904                         set_height (Normal);
 905                 } else if (prop->value() == "smaller") {
 906                         set_height (Smaller);
 907                 } else if (prop->value() == "small") {
 908                         set_height (Small);
 909                 } else {
 910                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
 911                         set_height (Normal);
 912                 }
 913
 914         } else {
 915                 set_height (Normal);
 916         }
 917 }
 918
 919 void
 920 TimeAxisView::reset_height()
 921 {
 922         set_height_pixels (height);
 923
 924         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 925                 (*i)->set_height_pixels ((TrackHeight)(*i)->height);
 926         }
 927 }
 928
 929 uint32_t
 930 TimeAxisView::height_to_pixels (TrackHeight h)
 931 {
 932         switch (h) {
 933         case Largest:
 934                 return hLargest;
 935         case Large:
 936                 return hLarge;
 937         case Larger:
 938                 return hLarger;
 939         case Normal:
 940                 return hNormal;
 941         case Smaller:
 942                 return hSmaller;
 943         case Small:
 944                 return hSmall;
 945         }
 946
 947         // what is wrong with gcc ?
 948
 949         return hNormal;
 950 }
 951
 952 void
 953 TimeAxisView::compute_controls_size_info ()
 954 {
 955         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
 956         Gtk::Table two_row_table (2, 8);
 957         Gtk::Table one_row_table (1, 8);
 958         Button* buttons[5];
 959         const int border_width = 2;
 960         const int extra_height = (2 * border_width) + 2; // 2 pixels for the controls frame
 961
 962         window.add (one_row_table);
 963
 964         one_row_table.set_border_width (border_width);
 965         one_row_table.set_row_spacings (0);
 966         one_row_table.set_col_spacings (0);
 967         one_row_table.set_homogeneous (true);
 968
 969         two_row_table.set_border_width (border_width);
 970         two_row_table.set_row_spacings (0);
 971         two_row_table.set_col_spacings (0);
 972         two_row_table.set_homogeneous (true);
 973
 974         for (int i = 0; i < 5; ++i) {
 975                 buttons[i] = manage (new Button (X_("f")));
 976                 buttons[i]->set_name ("TrackMuteButton");
 977         }
 978
 979         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 980
 981         one_row_table.show_all ();
 982         Gtk::Requisition req(one_row_table.size_request ());
 983
 984
 985         // height required to show 1 row of buttons
 986
 987         hSmaller = req.height + extra_height;
 988
 989         window.remove ();
 990         window.add (two_row_table);
 991
 992         two_row_table.attach (*buttons[1], 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 993         two_row_table.attach (*buttons[2], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 994         two_row_table.attach (*buttons[3], 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 995         two_row_table.attach (*buttons[4], 8, 9, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 996
 997         two_row_table.show_all ();
 998         req = two_row_table.size_request ();
 999
1000         // height required to show all normal buttons
1001
1002         hNormal = req.height + extra_height;
1003
1004         // these heights are all just larger than normal. no more
1005         // elements are visible (yet).
1006
1007         hLarger = hNormal + 50;
1008         hLarge = hNormal + 150;
1009         hLargest = hNormal + 250;
1010
1011         // height required to show track name
1012
1013         hSmall = 27;
1014 }
1015
1016 void
1017 TimeAxisView::show_name_label ()
1018 {
1019         if (!(name_packing & NameLabelPacked)) {
1020                 name_hbox.pack_start (name_label, true, true);
1021                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1022                 name_hbox.show ();
1023                 name_label.show ();
1024         }
1025 }
1026
1027 void
1028 TimeAxisView::show_name_entry ()
1029 {
1030         if (!(name_packing & NameEntryPacked)) {
1031                 name_hbox.pack_start (name_entry, true, true);
1032                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1033                 name_hbox.show ();
1034                 name_entry.show ();
1035         }
1036 }
1037
1038 void
1039 TimeAxisView::hide_name_label ()
1040 {
1041         if (name_packing & NameLabelPacked) {
1042                 name_hbox.remove (name_label);
1043                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1044         }
1045 }
1046
1047 void
1048 TimeAxisView::hide_name_entry ()
1049 {
1050         if (name_packing & NameEntryPacked) {
1051                 name_hbox.remove (name_entry);
1052                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1053         }
1054 }
1055
1056 void
1057 TimeAxisView::color_handler ()
1058 {
1059
1060         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
1061
1062                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1063                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1064
1065                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1066                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1067
1068                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1069                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1070         }
1071
1072         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
1073
1074                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1075                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1076
1077                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1078                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1079
1080                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1081                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1082         }
1083 }
1084
1085 TimeAxisView*
1086 TimeAxisView::covers_y_position (double y)
1087 {
1088         if (hidden()) {
1089                 return 0;
1090         }
1091
1092         if (y_position <= y && y < (y_position + height)) {
1093                 return this;
1094         }
1095
1096         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1097                 TimeAxisView* tv;
1098
1099                 if ((tv = (*i)->covers_y_position (y)) != 0) {
1100                         return tv;
1101                 }
1102         }
1103
1104         return 0;
1105 }