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           y_position(0),
  75           order(0),
  76           controls_table (2, 8)
  77 {
  78         if (need_size_info) {
  79                 compute_controls_size_info ();
  80                 need_size_info = false;
  81         }
  82
  83         canvas_display = new Group (*canvas.root(), 0.0, 0.0);
  84
  85         selection_group = new Group (*canvas_display);
  86         selection_group->hide();
  87
  88         control_parent = 0;
  89         display_menu = 0;
  90         size_menu = 0;
  91         _marked_for_display = false;
  92         _hidden = false;
  93         height = 0;
  94         effective_height = 0;
  95         parent = rent;
  96         _has_state = false;
  97         last_name_entry_key_press_event = 0;
  98         name_packing = NamePackingBits (0);
  99
 100         /*
 101           Create the standard LHS Controls
 102           We create the top-level container and name add the name label here,
 103           subclasses can add to the layout as required
 104         */
 105
 106         name_entry.set_name ("EditorTrackNameDisplay");
 107         name_entry.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_release));
 108         name_entry.signal_button_press_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_press));
 109         name_entry.signal_key_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_key_release));
 110         name_entry.signal_activate().connect (mem_fun(*this, &TimeAxisView::name_entry_activated));
 111         name_entry.signal_focus_in_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 112         name_entry.signal_focus_out_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 113         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 114
 115         name_label.set_name ("TrackLabel");
 116         name_label.set_alignment (0.0, 0.5);
 117
 118         /* typically, either name_label OR name_entry are visible,
 119            but not both. its up to derived classes to show/hide them as they
 120            wish.
 121         */
 122
 123         name_hbox.show ();
 124
 125         controls_table.set_border_width (2);
 126         controls_table.set_row_spacings (0);
 127         controls_table.set_col_spacings (0);
 128         controls_table.set_homogeneous (true);
 129
 130         controls_table.attach (name_hbox, 0, 4, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);
 131         controls_table.show_all ();
 132         controls_table.set_no_show_all ();
 133
 134         controls_vbox.pack_start (controls_table, false, false);
 135         controls_vbox.show ();
 136
 137         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 138         controls_ebox.add (controls_vbox);
 139         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 140         controls_ebox.set_flags (CAN_FOCUS);
 141
 142         controls_ebox.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 143         controls_ebox.signal_scroll_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 144
 145         controls_lhs_pad.set_name ("TimeAxisViewControlsPadding");
 146         controls_hbox.pack_start (controls_lhs_pad,false,false);
 147         controls_hbox.pack_start (controls_ebox,true,true);
 148         controls_hbox.show ();
 149
 150         controls_frame.add (controls_hbox);
 151         controls_frame.set_name ("TimeAxisViewControlsBaseUnselected");
 152         controls_frame.set_shadow_type (Gtk::SHADOW_ETCHED_OUT);
 153
 154         ColorChanged.connect (mem_fun (*this, &TimeAxisView::color_handler));
 155 }
 156
 157 TimeAxisView::~TimeAxisView()
 158 {
 159         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 160                 delete *i;
 161         }
 162
 163         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 164                 delete (*i)->rect;
 165                 delete (*i)->start_trim;
 166                 delete (*i)->end_trim;
 167
 168         }
 169
 170         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 171                 delete (*i)->rect;
 172                 delete (*i)->start_trim;
 173                 delete (*i)->end_trim;
 174         }
 175
 176         if (selection_group) {
 177                 delete selection_group;
 178                 selection_group = 0;
 179         }
 180
 181         if (canvas_display) {
 182                 delete canvas_display;
 183                 canvas_display = 0;
 184         }
 185
 186         if (display_menu) {
 187                 delete display_menu;
 188                 display_menu = 0;
 189         }
 190 }
 191
 192 guint32
 193 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 194 {
 195         gdouble ix1, ix2, iy1, iy2;
 196         effective_height = 0;
 197
 198         if (control_parent) {
 199                 control_parent->reorder_child (controls_frame, nth);
 200         } else {
 201                 control_parent = parent;
 202                 parent->pack_start (controls_frame, false, false);
 203                 parent->reorder_child (controls_frame, nth);
 204         }
 205         controls_frame.show ();
 206         controls_ebox.show ();
 207
 208         /* the coordinates used here are in the system of the
 209            item's parent ...
 210         */
 211
 212         canvas_display->get_bounds (ix1, iy1, ix2, iy2);
 213         Group* pg = canvas_display->property_parent();
 214         pg->i2w (ix1, iy1);
 215
 216         if (iy1 < 0) {
 217                 iy1 = 0;
 218         }
 219
 220         canvas_display->move (0.0, y - iy1);
 221         canvas_display->show();/* XXX not necessary */
 222         y_position = y;
 223         order = nth;
 224         _hidden = false;
 225
 226         /* height in pixels depends on _order, so update it now we've changed _order */
 227         set_height (height_style);
 228
 229         effective_height = height;
 230
 231         /* now show children */
 232
 233         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 234
 235                 if ((*i)->marked_for_display()) {
 236                         (*i)->canvas_display->show();
 237                 }
 238
 239                 if (canvas_item_visible ((*i)->canvas_display)) {
 240                         ++nth;
 241                         effective_height += (*i)->show_at (y + effective_height, nth, parent);
 242                 }
 243         }
 244
 245         return effective_height;
 246 }
 247
 248 bool
 249 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 250 {
 251         switch (ev->direction) {
 252         case GDK_SCROLL_UP:
 253                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::Shift)) {
 254                         step_height (true);
 255                         return true;
 256                 }
 257                 break;
 258
 259         case GDK_SCROLL_DOWN:
 260                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::Shift)) {
 261                         step_height (false);
 262                         return true;
 263                 }
 264                 break;
 265
 266         default:
 267                 /* no handling for left/right, yet */
 268                 break;
 269         }
 270
 271         return false;
 272 }
 273
 274 bool
 275 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 276 {
 277         switch (ev->button) {
 278         case 1:
 279                 selection_click (ev);
 280                 break;
 281
 282         case 3:
 283                 popup_display_menu (ev->time);
 284                 break;
 285         }
 286
 287         return true;
 288 }
 289
 290 void
 291 TimeAxisView::selection_click (GdkEventButton* ev)
 292 {
 293         Selection::Operation op = Keyboard::selection_type (ev->state);
 294         editor.set_selected_track (*this, op, false);
 295 }
 296
 297 void
 298 TimeAxisView::hide ()
 299 {
 300         if (_hidden) {
 301                 return;
 302         }
 303
 304         canvas_display->hide();
 305         controls_frame.hide ();
 306
 307         if (control_parent) {
 308                 control_parent->remove (controls_frame);
 309                 control_parent = 0;
 310         }
 311
 312         y_position = -1;
 313         _hidden = true;
 314
 315         /* now hide children */
 316
 317         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 318                 (*i)->hide ();
 319         }
 320
 321         Hiding ();
 322 }
 323
 324 void
 325 TimeAxisView::step_height (bool bigger)
 326 {
 327
 328        if (height == hLargest) {
 329                if (!bigger) set_height (Large);
 330                return;
 331        }
 332        if (height == hLarge) {
 333                if (bigger) set_height (Largest);
 334                 else set_height (Larger);
 335                return;
 336        }
 337        if (height == hLarger) {
 338                 if (bigger) set_height (Large);
 339                 else set_height (Normal);
 340                return;
 341        }
 342        if (height == hNormal) {
 343                 if (bigger) set_height (Larger);
 344                 else set_height (Smaller);
 345                return;
 346        }
 347        if (height == hSmaller) {
 348                 if (bigger) set_height (Normal);
 349                 else set_height (Small);
 350                return;
 351        }
 352        if (height == hSmall) {
 353                 if (bigger) set_height (Smaller);
 354                return;
 355        }
 356 }
 357
 358 void
 359 TimeAxisView::set_height (TrackHeight h)
 360 {
 361         height_style = h;
 362         set_height_pixels (height_to_pixels (h));
 363 }
 364
 365 void
 366 TimeAxisView::set_height_pixels (uint32_t h)
 367 {
 368         height = h;
 369         controls_frame.set_size_request (-1, height + ((order == 0) ? 1 : 0));
 370
 371         if (canvas_item_visible (selection_group)) {
 372                 /* resize the selection rect */
 373                 show_selection (editor.get_selection().time);
 374         }
 375 }
 376
 377 bool
 378 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 379 {
 380         PublicEditor::TrackViewList *allviews = 0;
 381         PublicEditor::TrackViewList::iterator i;
 382
 383         switch (ev->keyval) {
 384         case GDK_Escape:
 385                 name_entry.select_region (0,0);
 386                 controls_ebox.grab_focus ();
 387                 name_entry_changed ();
 388                 return true;
 389
 390         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 391          * generates a different ev->keyval, rather than setting
 392          * ev->state.
 393          */
 394         case GDK_ISO_Left_Tab:
 395         case GDK_Tab:
 396                 name_entry_changed ();
 397                 allviews = editor.get_valid_views (0);
 398                 if (allviews != 0) {
 399                         i = find (allviews->begin(), allviews->end(), this);
 400                         if (ev->keyval == GDK_Tab) {
 401                                 if (i != allviews->end()) {
 402                                         do {
 403                                                 if (++i == allviews->end()) { return true; }
 404                                         } while((*i)->hidden());
 405                                 }
 406                         } else {
 407                                 if (i != allviews->begin()) {
 408                                         do {
 409                                                 if (--i == allviews->begin()) { return true; }
 410                                         } while ((*i)->hidden());
 411                                 }
 412                         }
 413
 414                         if ((*i)->height_style == Small) {
 415                                 (*i)->set_height(Smaller);
 416                         }
 417
 418                         (*i)->name_entry.grab_focus();
 419                 }
 420                 return true;
 421
 422         case GDK_Up:
 423         case GDK_Down:
 424                 name_entry_changed ();
 425                 return true;
 426
 427         default:
 428                 break;
 429         }
 430
 431 #ifdef TIMEOUT_NAME_EDIT
 432         /* adapt the timeout to reflect the user's typing speed */
 433
 434         guint32 name_entry_timeout;
 435
 436         if (last_name_entry_key_press_event) {
 437                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 438                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 439         } else {
 440                 /* start with a 1 second timeout */
 441                 name_entry_timeout = 1000;
 442         }
 443
 444         last_name_entry_key_press_event = ev->time;
 445
 446         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 447
 448         name_entry_key_timeout.disconnect();
 449         name_entry_key_timeout = Glib::signal_timeout().connect (mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 450 #endif
 451
 452         return false;
 453 }
 454
 455 bool
 456 TimeAxisView::name_entry_focus_in (GdkEventFocus* ev)
 457 {
 458         name_entry.select_region (0, -1);
 459         name_entry.set_name ("EditorActiveTrackNameDisplay");
 460         return false;
 461 }
 462
 463 bool
 464 TimeAxisView::name_entry_focus_out (GdkEventFocus* ev)
 465 {
 466         /* clean up */
 467
 468         last_name_entry_key_press_event = 0;
 469         name_entry_key_timeout.disconnect ();
 470         name_entry.set_name ("EditorTrackNameDisplay");
 471         name_entry.select_region (0,0);
 472
 473         /* do the real stuff */
 474
 475         name_entry_changed ();
 476
 477         return false;
 478 }
 479
 480 bool
 481 TimeAxisView::name_entry_key_timed_out ()
 482 {
 483         name_entry_activated();
 484         return false;
 485 }
 486
 487 void
 488 TimeAxisView::name_entry_activated ()
 489 {
 490         controls_ebox.grab_focus();
 491 }
 492
 493 void
 494 TimeAxisView::name_entry_changed ()
 495 {
 496 }
 497
 498 bool
 499 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 500 {
 501         if (ev->button == 3) {
 502                 return true;
 503         }
 504         return false;
 505 }
 506
 507 bool
 508 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 509 {
 510         if (ev->button == 3) {
 511                 popup_display_menu (ev->time);
 512                 return true;
 513         }
 514         return false;
 515 }
 516
 517 void
 518 TimeAxisView::popup_display_menu (guint32 when)
 519 {
 520         if (display_menu == 0) {
 521                 build_display_menu ();
 522         }
 523
 524         if (!get_selected()) {
 525                 editor.set_selected_track (*this, Selection::Set);
 526         }
 527
 528         display_menu->popup (1, when);
 529 }
 530
 531 gint
 532 TimeAxisView::size_click (GdkEventButton *ev)
 533 {
 534         editor.set_selected_track (*this, Selection::Add);
 535         popup_size_menu (ev->time);
 536         return TRUE;
 537 }
 538
 539 void
 540 TimeAxisView::popup_size_menu (guint32 when)
 541 {
 542         if (size_menu == 0) {
 543                 build_size_menu ();
 544         }
 545         size_menu->popup (1, when);
 546 }
 547
 548 void
 549 TimeAxisView::set_selected (bool yn)
 550 {
 551         AxisView::set_selected (yn);
 552
 553         if (_selected) {
 554                 controls_ebox.set_name (controls_base_selected_name);
 555                 controls_frame.set_name (controls_base_selected_name);
 556
 557                 /* propagate any existing selection, if the mode is right */
 558
 559                 if (editor.current_mouse_mode() == Editing::MouseRange && !editor.get_selection().time.empty()) {
 560                         show_selection (editor.get_selection().time);
 561                 }
 562
 563         } else {
 564                 controls_ebox.set_name (controls_base_unselected_name);
 565                 controls_frame.set_name (controls_base_unselected_name);
 566
 567                 hide_selection ();
 568
 569                 /* children will be set for the yn=true case. but when deselecting
 570                    the editor only has a list of top-level trackviews, so we
 571                    have to do this here.
 572                 */
 573
 574                 for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 575                         (*i)->set_selected (false);
 576                 }
 577
 578
 579         }
 580 }
 581
 582 void
 583 TimeAxisView::build_size_menu ()
 584 {
 585         using namespace Menu_Helpers;
 586
 587         size_menu = new Menu;
 588         size_menu->set_name ("ArdourContextMenu");
 589         MenuList& items = size_menu->items();
 590
 591         items.push_back (MenuElem (_("Largest"), bind (mem_fun (*this, &TimeAxisView::set_height), Largest)));
 592         items.push_back (MenuElem (_("Large"), bind (mem_fun (*this, &TimeAxisView::set_height), Large)));
 593         items.push_back (MenuElem (_("Larger"), bind (mem_fun (*this, &TimeAxisView::set_height), Larger)));
 594         items.push_back (MenuElem (_("Normal"), bind (mem_fun (*this, &TimeAxisView::set_height), Normal)));
 595         items.push_back (MenuElem (_("Smaller"), bind (mem_fun (*this, &TimeAxisView::set_height),Smaller)));
 596         items.push_back (MenuElem (_("Small"), bind (mem_fun (*this, &TimeAxisView::set_height), Small)));
 597 }
 598
 599 void
 600 TimeAxisView::build_display_menu ()
 601 {
 602         using namespace Menu_Helpers;
 603
 604         display_menu = new Menu;
 605         display_menu->set_name ("ArdourContextMenu");
 606
 607         // Just let implementing classes define what goes into the manu
 608 }
 609
 610 void
 611 TimeAxisView::set_samples_per_unit (double spu)
 612 {
 613         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 614                 (*i)->set_samples_per_unit (spu);
 615         }
 616 }
 617
 618 void
 619 TimeAxisView::show_timestretch (nframes_t start, nframes_t end)
 620 {
 621         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 622                 (*i)->show_timestretch (start, end);
 623         }
 624 }
 625
 626 void
 627 TimeAxisView::hide_timestretch ()
 628 {
 629         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 630                 (*i)->hide_timestretch ();
 631         }
 632 }
 633
 634 void
 635 TimeAxisView::show_selection (TimeSelection& ts)
 636 {
 637         double x1;
 638         double x2;
 639         double y2;
 640         SelectionRect *rect;
 641
 642         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 643                 (*i)->show_selection (ts);
 644         }
 645
 646         if (canvas_item_visible (selection_group)) {
 647                 while (!used_selection_rects.empty()) {
 648                         free_selection_rects.push_front (used_selection_rects.front());
 649                         used_selection_rects.pop_front();
 650                         free_selection_rects.front()->rect->hide();
 651                         free_selection_rects.front()->start_trim->hide();
 652                         free_selection_rects.front()->end_trim->hide();
 653                 }
 654                 selection_group->hide();
 655         }
 656
 657         selection_group->show();
 658         selection_group->raise_to_top();
 659
 660         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 661                 nframes_t start, end, cnt;
 662
 663                 start = (*i).start;
 664                 end = (*i).end;
 665                 cnt = end - start + 1;
 666
 667                 rect = get_selection_rect ((*i).id);
 668
 669                 x1 = editor.frame_to_unit (start);
 670                 x2 = editor.frame_to_unit (start + cnt - 1);
 671                 y2 = height;
 672
 673                 rect->rect->property_x1() = x1;
 674                 rect->rect->property_y1() = 1.0;
 675                 rect->rect->property_x2() = x2;
 676                 rect->rect->property_y2() = y2;
 677
 678                 // trim boxes are at the top for selections
 679
 680                 if (x2 > x1) {
 681                         rect->start_trim->property_x1() = x1;
 682                         rect->start_trim->property_y1() = 1.0;
 683                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 684                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 685
 686                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 687                         rect->end_trim->property_y1() = 1.0;
 688                         rect->end_trim->property_x2() = x2;
 689                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 690
 691                         rect->start_trim->show();
 692                         rect->end_trim->show();
 693                 } else {
 694                         rect->start_trim->hide();
 695                         rect->end_trim->hide();
 696                 }
 697
 698                 rect->rect->show ();
 699                 used_selection_rects.push_back (rect);
 700         }
 701 }
 702
 703 void
 704 TimeAxisView::reshow_selection (TimeSelection& ts)
 705 {
 706         show_selection (ts);
 707
 708         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 709                 (*i)->show_selection (ts);
 710         }
 711 }
 712
 713 void
 714 TimeAxisView::hide_selection ()
 715 {
 716         if (canvas_item_visible (selection_group)) {
 717                 while (!used_selection_rects.empty()) {
 718                         free_selection_rects.push_front (used_selection_rects.front());
 719                         used_selection_rects.pop_front();
 720                         free_selection_rects.front()->rect->hide();
 721                         free_selection_rects.front()->start_trim->hide();
 722                         free_selection_rects.front()->end_trim->hide();
 723                 }
 724                 selection_group->hide();
 725         }
 726
 727         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 728                 (*i)->hide_selection ();
 729         }
 730 }
 731
 732 void
 733 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 734 {
 735         /* find the selection rect this is for. we have the item corresponding to one
 736            of the trim handles.
 737          */
 738
 739         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 740                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 741
 742                         /* make one trim handle be "above" the other so that if they overlap,
 743                            the top one is the one last used.
 744                         */
 745
 746                         (*i)->rect->raise_to_top ();
 747                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 748                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 749
 750                         break;
 751                 }
 752         }
 753 }
 754
 755 SelectionRect *
 756 TimeAxisView::get_selection_rect (uint32_t id)
 757 {
 758         SelectionRect *rect;
 759
 760         /* check to see if we already have a visible rect for this particular selection ID */
 761
 762         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 763                 if ((*i)->id == id) {
 764                         return (*i);
 765                 }
 766         }
 767
 768         /* ditto for the free rect list */
 769
 770         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 771                 if ((*i)->id == id) {
 772                         SelectionRect* ret = (*i);
 773                         free_selection_rects.erase (i);
 774                         return ret;
 775                 }
 776         }
 777
 778         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 779
 780         if (free_selection_rects.empty()) {
 781
 782                 rect = new SelectionRect;
 783
 784                 rect->rect = new SimpleRect (*selection_group);
 785                 rect->rect->property_x1() = 0.0;
 786                 rect->rect->property_y1() = 0.0;
 787                 rect->rect->property_x2() = 0.0;
 788                 rect->rect->property_y2() = 0.0;
 789                 rect->rect->property_fill_color_rgba() = color_map[cSelectionRectFill];
 790                 rect->rect->property_outline_color_rgba() = color_map[cSelectionRectOutline];
 791
 792                 rect->start_trim = new SimpleRect (*selection_group);
 793                 rect->start_trim->property_x1() = 0.0;
 794                 rect->start_trim->property_x2() = 0.0;
 795                 rect->start_trim->property_fill_color_rgba() = color_map[cSelectionStartFill];
 796                 rect->start_trim->property_outline_color_rgba() = color_map[cSelectionStartOutline];
 797
 798                 rect->end_trim = new SimpleRect (*selection_group);
 799                 rect->end_trim->property_x1() = 0.0;
 800                 rect->end_trim->property_x2() = 0.0;
 801                 rect->end_trim->property_fill_color_rgba() = color_map[cSelectionEndFill];
 802                 rect->end_trim->property_outline_color_rgba() = color_map[cSelectionEndOutline];
 803
 804                 free_selection_rects.push_front (rect);
 805
 806                 rect->rect->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 807                 rect->start_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 808                 rect->end_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 809         }
 810
 811         rect = free_selection_rects.front();
 812         rect->id = id;
 813         free_selection_rects.pop_front();
 814         return rect;
 815 }
 816
 817 bool
 818 TimeAxisView::is_child (TimeAxisView* tav)
 819 {
 820         return find (children.begin(), children.end(), tav) != children.end();
 821 }
 822
 823 void
 824 TimeAxisView::add_child (TimeAxisView* child)
 825 {
 826         children.push_back (child);
 827 }
 828
 829 void
 830 TimeAxisView::remove_child (TimeAxisView* child)
 831 {
 832         vector<TimeAxisView*>::iterator i;
 833
 834         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 835                 children.erase (i);
 836         }
 837 }
 838
 839 void
 840 TimeAxisView::get_selectables (nframes_t start, nframes_t end, double top, double bot, list<Selectable*>& result)
 841 {
 842         return;
 843 }
 844
 845 void
 846 TimeAxisView::get_inverted_selectables (Selection& sel, list<Selectable*>& result)
 847 {
 848         return;
 849 }
 850
 851 bool
 852 TimeAxisView::touched (double top, double bot)
 853 {
 854         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 855            y_position is the "origin" or "top" of the track.
 856          */
 857
 858         double mybot = y_position + height;
 859
 860         return ((y_position <= bot && y_position >= top) ||
 861                 ((mybot <= bot) && (top < mybot)) ||
 862                 (mybot >= bot && y_position < top));
 863 }
 864
 865 void
 866 TimeAxisView::set_parent (TimeAxisView& p)
 867 {
 868         parent = &p;
 869 }
 870
 871 bool
 872 TimeAxisView::has_state () const
 873 {
 874         return _has_state;
 875 }
 876
 877 TimeAxisView*
 878 TimeAxisView::get_parent_with_state ()
 879 {
 880         if (parent == 0) {
 881                 return 0;
 882         }
 883
 884         if (parent->has_state()) {
 885                 return parent;
 886         }
 887
 888         return parent->get_parent_with_state ();
 889 }
 890
 891 void
 892 TimeAxisView::set_state (const XMLNode& node)
 893 {
 894         const XMLProperty *prop;
 895
 896         if ((prop = node.property ("track_height")) != 0) {
 897
 898                 if (prop->value() == "largest") {
 899                         set_height (Largest);
 900                 } else if (prop->value() == "large") {
 901                         set_height (Large);
 902                 } else if (prop->value() == "larger") {
 903                         set_height (Larger);
 904                 } else if (prop->value() == "normal") {
 905                         set_height (Normal);
 906                 } else if (prop->value() == "smaller") {
 907                         set_height (Smaller);
 908                 } else if (prop->value() == "small") {
 909                         set_height (Small);
 910                 } else {
 911                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
 912                         set_height (Normal);
 913                 }
 914
 915         } else {
 916                 set_height (Normal);
 917         }
 918 }
 919
 920 void
 921 TimeAxisView::reset_height()
 922 {
 923         set_height_pixels (height);
 924
 925         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 926                 (*i)->set_height_pixels ((TrackHeight)(*i)->height);
 927         }
 928 }
 929
 930 uint32_t
 931 TimeAxisView::height_to_pixels (TrackHeight h)
 932 {
 933         switch (h) {
 934         case Largest:
 935                 return hLargest;
 936         case Large:
 937                 return hLarge;
 938         case Larger:
 939                 return hLarger;
 940         case Normal:
 941                 return hNormal;
 942         case Smaller:
 943                 return hSmaller;
 944         case Small:
 945                 return hSmall;
 946         }
 947
 948         // what is wrong with gcc ?
 949
 950         return hNormal;
 951 }
 952
 953 void
 954 TimeAxisView::compute_controls_size_info ()
 955 {
 956         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
 957         Gtk::Table two_row_table (2, 8);
 958         Gtk::Table one_row_table (1, 8);
 959         Button* buttons[5];
 960         const int border_width = 2;
 961         const int extra_height = (2 * border_width) + 2; // 2 pixels for the controls frame
 962
 963         window.add (one_row_table);
 964
 965         one_row_table.set_border_width (border_width);
 966         one_row_table.set_row_spacings (0);
 967         one_row_table.set_col_spacings (0);
 968         one_row_table.set_homogeneous (true);
 969
 970         two_row_table.set_border_width (border_width);
 971         two_row_table.set_row_spacings (0);
 972         two_row_table.set_col_spacings (0);
 973         two_row_table.set_homogeneous (true);
 974
 975         for (int i = 0; i < 5; ++i) {
 976                 buttons[i] = manage (new Button (X_("f")));
 977                 buttons[i]->set_name ("TrackMuteButton");
 978         }
 979
 980         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 981
 982         one_row_table.show_all ();
 983         Gtk::Requisition req(one_row_table.size_request ());
 984
 985
 986         // height required to show 1 row of buttons
 987
 988         hSmaller = req.height + extra_height;
 989
 990         window.remove ();
 991         window.add (two_row_table);
 992
 993         two_row_table.attach (*buttons[1], 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 994         two_row_table.attach (*buttons[2], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 995         two_row_table.attach (*buttons[3], 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 996         two_row_table.attach (*buttons[4], 8, 9, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 997
 998         two_row_table.show_all ();
 999         req = two_row_table.size_request ();
1000
1001         // height required to show all normal buttons
1002
1003         hNormal = req.height + extra_height;
1004
1005         // these heights are all just larger than normal. no more
1006         // elements are visible (yet).
1007
1008         hLarger = hNormal + 50;
1009         hLarge = hNormal + 150;
1010         hLargest = hNormal + 250;
1011
1012         // height required to show track name
1013
1014         hSmall = 27;
1015 }
1016
1017 void
1018 TimeAxisView::show_name_label ()
1019 {
1020         if (!(name_packing & NameLabelPacked)) {
1021                 name_hbox.pack_start (name_label, true, true);
1022                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1023                 name_hbox.show ();
1024                 name_label.show ();
1025         }
1026 }
1027
1028 void
1029 TimeAxisView::show_name_entry ()
1030 {
1031         if (!(name_packing & NameEntryPacked)) {
1032                 name_hbox.pack_start (name_entry, true, true);
1033                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1034                 name_hbox.show ();
1035                 name_entry.show ();
1036         }
1037 }
1038
1039 void
1040 TimeAxisView::hide_name_label ()
1041 {
1042         if (name_packing & NameLabelPacked) {
1043                 name_hbox.remove (name_label);
1044                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1045         }
1046 }
1047
1048 void
1049 TimeAxisView::hide_name_entry ()
1050 {
1051         if (name_packing & NameEntryPacked) {
1052                 name_hbox.remove (name_entry);
1053                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1054         }
1055 }
1056
1057 void
1058 TimeAxisView::color_handler (ColorID id, uint32_t val)
1059 {
1060         switch (id) {
1061         case cSelectionRectFill:
1062                 break;
1063         case cSelectionRectOutline:
1064                 break;
1065         case cSelectionStartFill:
1066                 break;
1067         case cSelectionStartOutline:
1068                 break;
1069         case cSelectionEndFill:
1070                 break;
1071         case cSelectionEndOutline:
1072                 break;
1073         default:
1074                 break;
1075         }
1076 }
1077
1078 TimeAxisView*
1079 TimeAxisView::covers_y_position (double y)
1080 {
1081         if (hidden()) {
1082                 return 0;
1083         }
1084
1085         if (y_position <= y && y < (y_position + height)) {
1086                 return this;
1087         }
1088
1089         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
1090                 TimeAxisView* tv;
1091
1092                 if ((tv = (*i)->covers_y_position (y)) != 0) {
1093                         return tv;
1094                 }
1095         }
1096
1097         return 0;
1098 }