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         controls_table.set_no_show_all ();
 132
 133         controls_vbox.pack_start (controls_table, false, false);
 134         controls_vbox.show ();
 135
 136         controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 137         controls_ebox.add (controls_vbox);
 138         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 139         controls_ebox.set_flags (CAN_FOCUS);
 140
 141         controls_ebox.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 142         controls_ebox.signal_scroll_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 143
 144         controls_lhs_pad.set_name ("TimeAxisViewControlsPadding");
 145         controls_hbox.pack_start (controls_lhs_pad,false,false);
 146         controls_hbox.pack_start (controls_ebox,true,true);
 147         controls_hbox.show ();
 148
 149         controls_frame.add (controls_hbox);
 150         controls_frame.set_name ("TimeAxisViewControlsBaseUnselected");
 151         controls_frame.set_shadow_type (Gtk::SHADOW_OUT);
 152
 153         ColorChanged.connect (mem_fun (*this, &TimeAxisView::color_handler));
 154 }
 155
 156 TimeAxisView::~TimeAxisView()
 157 {
 158         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 159                 delete *i;
 160         }
 161
 162         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 163                 delete (*i)->rect;
 164                 delete (*i)->start_trim;
 165                 delete (*i)->end_trim;
 166
 167         }
 168
 169         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 170                 delete (*i)->rect;
 171                 delete (*i)->start_trim;
 172                 delete (*i)->end_trim;
 173         }
 174
 175         if (selection_group) {
 176                 delete selection_group;
 177                 selection_group = 0;
 178         }
 179
 180         if (canvas_display) {
 181                 delete canvas_display;
 182                 canvas_display = 0;
 183         }
 184
 185         if (display_menu) {
 186                 delete display_menu;
 187                 display_menu = 0;
 188         }
 189 }
 190
 191 guint32
 192 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 193 {
 194         gdouble ix1, ix2, iy1, iy2;
 195         effective_height = 0;
 196
 197         if (control_parent) {
 198                 control_parent->reorder_child (controls_frame, nth);
 199         } else {
 200                 control_parent = parent;
 201                 parent->pack_start (controls_frame, false, false);
 202                 parent->reorder_child (controls_frame, nth);
 203         }
 204         controls_frame.show ();
 205         controls_ebox.show ();
 206
 207         /* the coordinates used here are in the system of the
 208            item's parent ...
 209         */
 210
 211         canvas_display->get_bounds (ix1, iy1, ix2, iy2);
 212         Group* pg = canvas_display->property_parent();
 213         pg->i2w (ix1, iy1);
 214
 215         if (iy1 < 0) {
 216                 iy1 = 0;
 217         }
 218
 219         canvas_display->move (0.0, y - iy1);
 220         canvas_display->show();/* XXX not necessary */
 221         y_position = y;
 222         order = nth;
 223         _hidden = false;
 224
 225         effective_height = height;
 226
 227         /* now show children */
 228
 229         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 230
 231                 if ((*i)->marked_for_display()) {
 232                         (*i)->canvas_display->show();
 233                 }
 234
 235                 if (canvas_item_visible ((*i)->canvas_display)) {
 236                         ++nth;
 237                         effective_height += (*i)->show_at (y + 1 + effective_height, nth, parent);
 238                 }
 239         }
 240
 241         return effective_height;
 242 }
 243
 244 bool
 245 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 246 {
 247         switch (ev->direction) {
 248         case GDK_SCROLL_UP:
 249                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::Shift)) {
 250                         step_height (true);
 251                         return true;
 252                 }
 253                 break;
 254
 255         case GDK_SCROLL_DOWN:
 256                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::Shift)) {
 257                         step_height (false);
 258                         return true;
 259                 }
 260                 break;
 261
 262         default:
 263                 /* no handling for left/right, yet */
 264                 break;
 265         }
 266
 267         return false;
 268 }
 269
 270 bool
 271 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 272 {
 273         switch (ev->button) {
 274         case 1:
 275                 selection_click (ev);
 276                 break;
 277
 278         case 3:
 279                 popup_display_menu (ev->time);
 280                 break;
 281         }
 282
 283         return true;
 284 }
 285
 286 void
 287 TimeAxisView::selection_click (GdkEventButton* ev)
 288 {
 289         Selection::Operation op = Keyboard::selection_type (ev->state);
 290         editor.set_selected_track (*this, op, false);
 291 }
 292
 293 void
 294 TimeAxisView::hide ()
 295 {
 296         if (_hidden) {
 297                 return;
 298         }
 299
 300         canvas_display->hide();
 301         controls_frame.hide ();
 302
 303         if (control_parent) {
 304                 control_parent->remove (controls_frame);
 305                 control_parent = 0;
 306         }
 307
 308         y_position = -1;
 309         _hidden = true;
 310
 311         /* now hide children */
 312
 313         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 314                 (*i)->hide ();
 315         }
 316
 317         Hiding ();
 318 }
 319
 320 void
 321 TimeAxisView::step_height (bool bigger)
 322 {
 323
 324        if (height == hLargest) {
 325                if (!bigger) set_height (Large);
 326                return;
 327        }
 328        if (height == hLarge) {
 329                if (bigger) set_height (Largest);
 330                 else set_height (Larger);
 331                return;
 332        }
 333        if (height == hLarger) {
 334                 if (bigger) set_height (Large);
 335                 else set_height (Normal);
 336                return;
 337        }
 338        if (height == hNormal) {
 339                 if (bigger) set_height (Larger);
 340                 else set_height (Smaller);
 341                return;
 342        }
 343        if (height == hSmaller) {
 344                 if (bigger) set_height (Normal);
 345                 else set_height (Small);
 346                return;
 347        }
 348        if (height == hSmall) {
 349                 if (bigger) set_height (Smaller);
 350                return;
 351        }
 352 }
 353
 354 void
 355 TimeAxisView::set_height (TrackHeight h)
 356 {
 357         height_style = h;
 358         set_height_pixels (height_to_pixels (h));
 359 }
 360
 361 void
 362 TimeAxisView::set_height_pixels (uint32_t h)
 363 {
 364         height = h;
 365         controls_frame.set_size_request (-1, height);
 366
 367         if (canvas_item_visible (selection_group)) {
 368                 /* resize the selection rect */
 369                 show_selection (editor.get_selection().time);
 370         }
 371 }
 372
 373 bool
 374 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 375 {
 376         PublicEditor::TrackViewList *allviews = 0;
 377         PublicEditor::TrackViewList::iterator i;
 378
 379         switch (ev->keyval) {
 380         case GDK_Escape:
 381                 name_entry.select_region (0,0);
 382                 controls_ebox.grab_focus ();
 383                 name_entry_changed ();
 384                 return true;
 385
 386         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 387          * generates a different ev->keyval, rather than setting
 388          * ev->state.
 389          */
 390         case GDK_ISO_Left_Tab:
 391         case GDK_Tab:
 392                 name_entry_changed ();
 393                 allviews = editor.get_valid_views (0);
 394                 if (allviews != 0) {
 395                         i = find (allviews->begin(), allviews->end(), this);
 396                         if (ev->keyval == GDK_Tab) {
 397                                 if (i != allviews->end()) {
 398                                         do {
 399                                                 if (++i == allviews->end()) { return true; }
 400                                         } while((*i)->hidden());
 401                                 }
 402                         } else {
 403                                 if (i != allviews->begin()) {
 404                                         do {
 405                                                 if (--i == allviews->begin()) { return true; }
 406                                         } while ((*i)->hidden());
 407                                 }
 408                         }
 409
 410                         if ((*i)->height_style == Small) {
 411                                 (*i)->set_height(Smaller);
 412                         }
 413
 414                         (*i)->name_entry.grab_focus();
 415                 }
 416                 return true;
 417
 418         case GDK_Up:
 419         case GDK_Down:
 420                 name_entry_changed ();
 421                 return true;
 422
 423         default:
 424                 break;
 425         }
 426
 427 #ifdef TIMEOUT_NAME_EDIT
 428         /* adapt the timeout to reflect the user's typing speed */
 429
 430         guint32 name_entry_timeout;
 431
 432         if (last_name_entry_key_press_event) {
 433                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 434                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 435         } else {
 436                 /* start with a 1 second timeout */
 437                 name_entry_timeout = 1000;
 438         }
 439
 440         last_name_entry_key_press_event = ev->time;
 441
 442         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 443
 444         name_entry_key_timeout.disconnect();
 445         name_entry_key_timeout = Glib::signal_timeout().connect (mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 446 #endif
 447
 448         return false;
 449 }
 450
 451 bool
 452 TimeAxisView::name_entry_focus_in (GdkEventFocus* ev)
 453 {
 454         name_entry.select_region (0, -1);
 455         name_entry.set_name ("EditorActiveTrackNameDisplay");
 456         return false;
 457 }
 458
 459 bool
 460 TimeAxisView::name_entry_focus_out (GdkEventFocus* ev)
 461 {
 462         /* clean up */
 463
 464         last_name_entry_key_press_event = 0;
 465         name_entry_key_timeout.disconnect ();
 466         name_entry.set_name ("EditorTrackNameDisplay");
 467         name_entry.select_region (0,0);
 468
 469         /* do the real stuff */
 470
 471         name_entry_changed ();
 472
 473         return false;
 474 }
 475
 476 bool
 477 TimeAxisView::name_entry_key_timed_out ()
 478 {
 479         name_entry_activated();
 480         return false;
 481 }
 482
 483 void
 484 TimeAxisView::name_entry_activated ()
 485 {
 486         controls_ebox.grab_focus();
 487 }
 488
 489 void
 490 TimeAxisView::name_entry_changed ()
 491 {
 492 }
 493
 494 bool
 495 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 496 {
 497         if (ev->button == 3) {
 498                 return true;
 499         }
 500         return false;
 501 }
 502
 503 bool
 504 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 505 {
 506         if (ev->button == 3) {
 507                 popup_display_menu (ev->time);
 508                 return true;
 509         }
 510         return false;
 511 }
 512
 513 void
 514 TimeAxisView::popup_display_menu (guint32 when)
 515 {
 516         if (display_menu == 0) {
 517                 build_display_menu ();
 518         }
 519         editor.set_selected_track (*this, Selection::Add);
 520         display_menu->popup (1, when);
 521 }
 522
 523 gint
 524 TimeAxisView::size_click (GdkEventButton *ev)
 525 {
 526         editor.set_selected_track (*this, Selection::Add);
 527         popup_size_menu (ev->time);
 528         return TRUE;
 529 }
 530
 531 void
 532 TimeAxisView::popup_size_menu (guint32 when)
 533 {
 534         if (size_menu == 0) {
 535                 build_size_menu ();
 536         }
 537         size_menu->popup (1, when);
 538 }
 539
 540 void
 541 TimeAxisView::set_selected (bool yn)
 542 {
 543         AxisView::set_selected (yn);
 544
 545         if (_selected) {
 546                 controls_ebox.set_name (controls_base_selected_name);
 547                 controls_frame.set_name (controls_base_selected_name);
 548
 549                 /* propagate any existing selection, if the mode is right */
 550
 551                 if (editor.current_mouse_mode() == Editing::MouseRange && !editor.get_selection().time.empty()) {
 552                         show_selection (editor.get_selection().time);
 553                 }
 554
 555         } else {
 556                 controls_ebox.set_name (controls_base_unselected_name);
 557                 controls_frame.set_name (controls_base_unselected_name);
 558
 559                 hide_selection ();
 560
 561                 /* children will be set for the yn=true case. but when deselecting
 562                    the editor only has a list of top-level trackviews, so we
 563                    have to do this here.
 564                 */
 565
 566                 for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 567                         (*i)->set_selected (false);
 568                 }
 569
 570
 571         }
 572 }
 573
 574 void
 575 TimeAxisView::build_size_menu ()
 576 {
 577         using namespace Menu_Helpers;
 578
 579         size_menu = new Menu;
 580         size_menu->set_name ("ArdourContextMenu");
 581         MenuList& items = size_menu->items();
 582
 583         items.push_back (MenuElem (_("Largest"), bind (mem_fun (*this, &TimeAxisView::set_height), Largest)));
 584         items.push_back (MenuElem (_("Large"), bind (mem_fun (*this, &TimeAxisView::set_height), Large)));
 585         items.push_back (MenuElem (_("Larger"), bind (mem_fun (*this, &TimeAxisView::set_height), Larger)));
 586         items.push_back (MenuElem (_("Normal"), bind (mem_fun (*this, &TimeAxisView::set_height), Normal)));
 587         items.push_back (MenuElem (_("Smaller"), bind (mem_fun (*this, &TimeAxisView::set_height),Smaller)));
 588         items.push_back (MenuElem (_("Small"), bind (mem_fun (*this, &TimeAxisView::set_height), Small)));
 589 }
 590
 591 void
 592 TimeAxisView::build_display_menu ()
 593 {
 594         using namespace Menu_Helpers;
 595
 596         display_menu = new Menu;
 597         display_menu->set_name ("ArdourContextMenu");
 598
 599         // Just let implementing classes define what goes into the manu
 600 }
 601
 602 void
 603 TimeAxisView::set_samples_per_unit (double spu)
 604 {
 605         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 606                 (*i)->set_samples_per_unit (spu);
 607         }
 608 }
 609
 610 void
 611 TimeAxisView::show_timestretch (nframes_t start, nframes_t end)
 612 {
 613         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 614                 (*i)->show_timestretch (start, end);
 615         }
 616 }
 617
 618 void
 619 TimeAxisView::hide_timestretch ()
 620 {
 621         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 622                 (*i)->hide_timestretch ();
 623         }
 624 }
 625
 626 void
 627 TimeAxisView::show_selection (TimeSelection& ts)
 628 {
 629         double x1;
 630         double x2;
 631         double y2;
 632         SelectionRect *rect;
 633
 634         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 635                 (*i)->show_selection (ts);
 636         }
 637
 638         if (canvas_item_visible (selection_group)) {
 639                 while (!used_selection_rects.empty()) {
 640                         free_selection_rects.push_front (used_selection_rects.front());
 641                         used_selection_rects.pop_front();
 642                         free_selection_rects.front()->rect->hide();
 643                         free_selection_rects.front()->start_trim->hide();
 644                         free_selection_rects.front()->end_trim->hide();
 645                 }
 646                 selection_group->hide();
 647         }
 648
 649         selection_group->show();
 650         selection_group->raise_to_top();
 651
 652         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 653                 nframes_t start, end, cnt;
 654
 655                 start = (*i).start;
 656                 end = (*i).end;
 657                 cnt = end - start + 1;
 658
 659                 rect = get_selection_rect ((*i).id);
 660
 661                 x1 = editor.frame_to_unit (start);
 662                 x2 = editor.frame_to_unit (start + cnt - 1);
 663                 y2 = height;
 664
 665                 rect->rect->property_x1() = x1;
 666                 rect->rect->property_y1() = 1.0;
 667                 rect->rect->property_x2() = x2;
 668                 rect->rect->property_y2() = y2;
 669
 670                 // trim boxes are at the top for selections
 671
 672                 if (x2 > x1) {
 673                         rect->start_trim->property_x1() = x1;
 674                         rect->start_trim->property_y1() = 1.0;
 675                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 676                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 677
 678                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 679                         rect->end_trim->property_y1() = 1.0;
 680                         rect->end_trim->property_x2() = x2;
 681                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 682
 683                         rect->start_trim->show();
 684                         rect->end_trim->show();
 685                 } else {
 686                         rect->start_trim->hide();
 687                         rect->end_trim->hide();
 688                 }
 689
 690                 rect->rect->show ();
 691                 used_selection_rects.push_back (rect);
 692         }
 693 }
 694
 695 void
 696 TimeAxisView::reshow_selection (TimeSelection& ts)
 697 {
 698         show_selection (ts);
 699
 700         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 701                 (*i)->show_selection (ts);
 702         }
 703 }
 704
 705 void
 706 TimeAxisView::hide_selection ()
 707 {
 708         if (canvas_item_visible (selection_group)) {
 709                 while (!used_selection_rects.empty()) {
 710                         free_selection_rects.push_front (used_selection_rects.front());
 711                         used_selection_rects.pop_front();
 712                         free_selection_rects.front()->rect->hide();
 713                         free_selection_rects.front()->start_trim->hide();
 714                         free_selection_rects.front()->end_trim->hide();
 715                 }
 716                 selection_group->hide();
 717         }
 718
 719         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 720                 (*i)->hide_selection ();
 721         }
 722 }
 723
 724 void
 725 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 726 {
 727         /* find the selection rect this is for. we have the item corresponding to one
 728            of the trim handles.
 729          */
 730
 731         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 732                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 733
 734                         /* make one trim handle be "above" the other so that if they overlap,
 735                            the top one is the one last used.
 736                         */
 737
 738                         (*i)->rect->raise_to_top ();
 739                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 740                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 741
 742                         break;
 743                 }
 744         }
 745 }
 746
 747 SelectionRect *
 748 TimeAxisView::get_selection_rect (uint32_t id)
 749 {
 750         SelectionRect *rect;
 751
 752         /* check to see if we already have a visible rect for this particular selection ID */
 753
 754         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 755                 if ((*i)->id == id) {
 756                         return (*i);
 757                 }
 758         }
 759
 760         /* ditto for the free rect list */
 761
 762         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 763                 if ((*i)->id == id) {
 764                         SelectionRect* ret = (*i);
 765                         free_selection_rects.erase (i);
 766                         return ret;
 767                 }
 768         }
 769
 770         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 771
 772         if (free_selection_rects.empty()) {
 773
 774                 rect = new SelectionRect;
 775
 776                 rect->rect = new SimpleRect (*selection_group);
 777                 rect->rect->property_x1() = 0.0;
 778                 rect->rect->property_y1() = 0.0;
 779                 rect->rect->property_x2() = 0.0;
 780                 rect->rect->property_y2() = 0.0;
 781                 rect->rect->property_fill_color_rgba() = color_map[cSelectionRectFill];
 782                 rect->rect->property_outline_color_rgba() = color_map[cSelectionRectOutline];
 783
 784                 rect->start_trim = new SimpleRect (*selection_group);
 785                 rect->start_trim->property_x1() = 0.0;
 786                 rect->start_trim->property_x2() = 0.0;
 787                 rect->start_trim->property_fill_color_rgba() = color_map[cSelectionStartFill];
 788                 rect->start_trim->property_outline_color_rgba() = color_map[cSelectionStartOutline];
 789
 790                 rect->end_trim = new SimpleRect (*selection_group);
 791                 rect->end_trim->property_x1() = 0.0;
 792                 rect->end_trim->property_x2() = 0.0;
 793                 rect->end_trim->property_fill_color_rgba() = color_map[cSelectionEndFill];
 794                 rect->end_trim->property_outline_color_rgba() = color_map[cSelectionEndOutline];
 795
 796                 free_selection_rects.push_front (rect);
 797
 798                 rect->rect->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 799                 rect->start_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 800                 rect->end_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 801         }
 802
 803         rect = free_selection_rects.front();
 804         rect->id = id;
 805         free_selection_rects.pop_front();
 806         return rect;
 807 }
 808
 809 bool
 810 TimeAxisView::is_child (TimeAxisView* tav)
 811 {
 812         return find (children.begin(), children.end(), tav) != children.end();
 813 }
 814
 815 void
 816 TimeAxisView::add_child (TimeAxisView* child)
 817 {
 818         children.push_back (child);
 819 }
 820
 821 void
 822 TimeAxisView::remove_child (TimeAxisView* child)
 823 {
 824         vector<TimeAxisView*>::iterator i;
 825
 826         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 827                 children.erase (i);
 828         }
 829 }
 830
 831 void
 832 TimeAxisView::get_selectables (nframes_t start, nframes_t end, double top, double bot, list<Selectable*>& result)
 833 {
 834         return;
 835 }
 836
 837 void
 838 TimeAxisView::get_inverted_selectables (Selection& sel, list<Selectable*>& result)
 839 {
 840         return;
 841 }
 842
 843 bool
 844 TimeAxisView::touched (double top, double bot)
 845 {
 846         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 847            y_position is the "origin" or "top" of the track.
 848          */
 849
 850         double mybot = y_position + height; // XXX need to include Editor::track_spacing;
 851
 852         return ((y_position <= bot && y_position >= top) ||
 853                 ((mybot <= bot) && (top < mybot)) ||
 854                 (mybot >= bot && y_position < top));
 855 }
 856
 857 void
 858 TimeAxisView::set_parent (TimeAxisView& p)
 859 {
 860         parent = &p;
 861 }
 862
 863 bool
 864 TimeAxisView::has_state () const
 865 {
 866         return _has_state;
 867 }
 868
 869 TimeAxisView*
 870 TimeAxisView::get_parent_with_state ()
 871 {
 872         if (parent == 0) {
 873                 return 0;
 874         }
 875
 876         if (parent->has_state()) {
 877                 return parent;
 878         }
 879
 880         return parent->get_parent_with_state ();
 881 }
 882
 883 void
 884 TimeAxisView::set_state (const XMLNode& node)
 885 {
 886         const XMLProperty *prop;
 887
 888         if ((prop = node.property ("track_height")) != 0) {
 889
 890                 if (prop->value() == "largest") {
 891                         set_height (Largest);
 892                 } else if (prop->value() == "large") {
 893                         set_height (Large);
 894                 } else if (prop->value() == "larger") {
 895                         set_height (Larger);
 896                 } else if (prop->value() == "normal") {
 897                         set_height (Normal);
 898                 } else if (prop->value() == "smaller") {
 899                         set_height (Smaller);
 900                 } else if (prop->value() == "small") {
 901                         set_height (Small);
 902                 } else {
 903                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
 904                         set_height (Normal);
 905                 }
 906
 907         } else {
 908                 set_height (Normal);
 909         }
 910 }
 911
 912 void
 913 TimeAxisView::reset_height()
 914 {
 915         set_height_pixels (height);
 916
 917         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 918                 (*i)->set_height_pixels ((TrackHeight)(*i)->height);
 919         }
 920 }
 921
 922 uint32_t
 923 TimeAxisView::height_to_pixels (TrackHeight h)
 924 {
 925         switch (h) {
 926         case Largest:
 927                 return hLargest;
 928         case Large:
 929                 return hLarge;
 930         case Larger:
 931                 return hLarger;
 932         case Normal:
 933                 return hNormal;
 934         case Smaller:
 935                 return hSmaller;
 936         case Small:
 937                 return hSmall;
 938         }
 939
 940         // what is wrong with gcc ?
 941
 942         return hNormal;
 943 }
 944
 945 void
 946 TimeAxisView::compute_controls_size_info ()
 947 {
 948         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
 949         Gtk::Table two_row_table (2, 8);
 950         Gtk::Table one_row_table (1, 8);
 951         Button* buttons[5];
 952         const int border_width = 2;
 953         const int extra_height = (2 * border_width) + 2; // 2 pixels for the controls frame
 954
 955         window.add (one_row_table);
 956
 957         one_row_table.set_border_width (border_width);
 958         one_row_table.set_row_spacings (0);
 959         one_row_table.set_col_spacings (0);
 960         one_row_table.set_homogeneous (true);
 961
 962         two_row_table.set_border_width (border_width);
 963         two_row_table.set_row_spacings (0);
 964         two_row_table.set_col_spacings (0);
 965         two_row_table.set_homogeneous (true);
 966
 967         for (int i = 0; i < 5; ++i) {
 968                 buttons[i] = manage (new Button (X_("f")));
 969                 buttons[i]->set_name ("TrackMuteButton");
 970         }
 971
 972         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 973
 974         one_row_table.show_all ();
 975         Gtk::Requisition req(one_row_table.size_request ());
 976
 977
 978         // height required to show 1 row of buttons
 979
 980         hSmaller = req.height + extra_height;
 981
 982         window.remove ();
 983         window.add (two_row_table);
 984
 985         two_row_table.attach (*buttons[1], 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 986         two_row_table.attach (*buttons[2], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 987         two_row_table.attach (*buttons[3], 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 988         two_row_table.attach (*buttons[4], 8, 9, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 989
 990         two_row_table.show_all ();
 991         req = two_row_table.size_request ();
 992
 993         // height required to show all normal buttons
 994
 995         hNormal = req.height + extra_height;
 996
 997         // these heights are all just larger than normal. no more
 998         // elements are visible (yet).
 999
1000         hLarger = hNormal + 50;
1001         hLarge = hNormal + 150;
1002         hLargest = hNormal + 250;
1003
1004         // height required to show track name
1005
1006         hSmall = 27;
1007 }
1008
1009 void
1010 TimeAxisView::show_name_label ()
1011 {
1012         if (!(name_packing & NameLabelPacked)) {
1013                 name_hbox.pack_start (name_label, true, true);
1014                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1015                 name_hbox.show ();
1016                 name_label.show ();
1017         }
1018 }
1019
1020 void
1021 TimeAxisView::show_name_entry ()
1022 {
1023         if (!(name_packing & NameEntryPacked)) {
1024                 name_hbox.pack_start (name_entry, true, true);
1025                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1026                 name_hbox.show ();
1027                 name_entry.show ();
1028         }
1029 }
1030
1031 void
1032 TimeAxisView::hide_name_label ()
1033 {
1034         if (name_packing & NameLabelPacked) {
1035                 name_hbox.remove (name_label);
1036                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1037         }
1038 }
1039
1040 void
1041 TimeAxisView::hide_name_entry ()
1042 {
1043         if (name_packing & NameEntryPacked) {
1044                 name_hbox.remove (name_entry);
1045                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1046         }
1047 }
1048
1049 void
1050 TimeAxisView::color_handler (ColorID id, uint32_t val)
1051 {
1052         switch (id) {
1053         case cSelectionRectFill:
1054                 break;
1055         case cSelectionRectOutline:
1056                 break;
1057         case cSelectionStartFill:
1058                 break;
1059         case cSelectionStartOutline:
1060                 break;
1061         case cSelectionEndFill:
1062                 break;
1063         case cSelectionEndOutline:
1064                 break;
1065         default:
1066                 break;
1067         }
1068 }
1069
1070 TimeAxisView*
1071 TimeAxisView::covers_y_position (double y)
1072 {
1073         if (hidden()) {
1074                 return 0;
1075         }
1076
1077         if (y_position <= y && y < (y_position + height)) {
1078                 return this;
1079         }
1080
1081         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
1082                 TimeAxisView* tv;
1083
1084                 if ((tv = (*i)->covers_y_position (y)) != 0) {
1085                         return tv;
1086                 }
1087         }
1088
1089         return 0;
1090 }