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::FILL|Gtk::EXPAND,  Gtk::FILL|Gtk::EXPAND, 3, 0);
 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_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_ETCHED_OUT);
 152
 153         ColorsChanged.connect (mem_fun (*this, &TimeAxisView::color_handler));
 154 }
 155
 156 TimeAxisView::~TimeAxisView()
 157 {
 158         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 159                 delete (*i)->rect;
 160                 delete (*i)->start_trim;
 161                 delete (*i)->end_trim;
 162
 163         }
 164
 165         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 166                 delete (*i)->rect;
 167                 delete (*i)->start_trim;
 168                 delete (*i)->end_trim;
 169         }
 170
 171         if (selection_group) {
 172                 delete selection_group;
 173                 selection_group = 0;
 174         }
 175
 176         if (canvas_display) {
 177                 delete canvas_display;
 178                 canvas_display = 0;
 179         }
 180
 181         if (display_menu) {
 182                 delete display_menu;
 183                 display_menu = 0;
 184         }
 185 }
 186
 187 guint32
 188 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 189 {
 190         gdouble ix1, ix2, iy1, iy2;
 191         effective_height = 0;
 192
 193         if (control_parent) {
 194                 control_parent->reorder_child (controls_hbox, nth);
 195         } else {
 196                 control_parent = parent;
 197                 parent->pack_start (controls_hbox, false, false);
 198                 parent->reorder_child (controls_hbox, nth);
 199         }
 200         controls_hbox.show ();
 201         controls_ebox.show ();
 202
 203         /* the coordinates used here are in the system of the
 204            item's parent ...
 205         */
 206
 207         canvas_display->get_bounds (ix1, iy1, ix2, iy2);
 208         Group* pg = canvas_display->property_parent();
 209         pg->i2w (ix1, iy1);
 210
 211         if (iy1 < 0) {
 212                 iy1 = 0;
 213         }
 214
 215         canvas_display->move (0.0, y - iy1);
 216         canvas_display->show();/* XXX not necessary */
 217         y_position = y;
 218         order = nth;
 219         _hidden = false;
 220
 221         /* height in pixels depends on _order, so update it now we've changed _order */
 222         set_height (height_style);
 223
 224         effective_height = height;
 225
 226         /* now show children */
 227
 228         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 229
 230                 if ((*i)->marked_for_display()) {
 231                         (*i)->canvas_display->show();
 232                 }
 233
 234                 if (canvas_item_visible ((*i)->canvas_display)) {
 235                         ++nth;
 236                         effective_height += (*i)->show_at (y + effective_height, nth, parent);
 237                 }
 238         }
 239
 240         return effective_height;
 241 }
 242
 243 bool
 244 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 245 {
 246         switch (ev->direction) {
 247         case GDK_SCROLL_UP:
 248                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 249                         step_height (true);
 250                         return true;
 251                 }
 252                 break;
 253
 254         case GDK_SCROLL_DOWN:
 255                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 256                         step_height (false);
 257                         return true;
 258                 }
 259                 break;
 260
 261         default:
 262                 /* no handling for left/right, yet */
 263                 break;
 264         }
 265
 266         return false;
 267 }
 268
 269 bool
 270 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 271 {
 272         switch (ev->button) {
 273         case 1:
 274                 selection_click (ev);
 275                 break;
 276
 277         case 3:
 278                 popup_display_menu (ev->time);
 279                 break;
 280         }
 281
 282         return true;
 283 }
 284
 285 void
 286 TimeAxisView::selection_click (GdkEventButton* ev)
 287 {
 288         Selection::Operation op = Keyboard::selection_type (ev->state);
 289         editor.set_selected_track (*this, op, false);
 290 }
 291
 292 void
 293 TimeAxisView::hide ()
 294 {
 295         if (_hidden) {
 296                 return;
 297         }
 298
 299         canvas_display->hide();
 300         controls_hbox.hide ();
 301
 302         if (control_parent) {
 303                 control_parent->remove (controls_hbox);
 304                 control_parent = 0;
 305         }
 306
 307         y_position = -1;
 308         _hidden = true;
 309
 310         /* now hide children */
 311
 312         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 313                 (*i)->hide ();
 314         }
 315
 316         Hiding ();
 317 }
 318
 319 void
 320 TimeAxisView::step_height (bool bigger)
 321 {
 322
 323        if (height == hLargest) {
 324                if (!bigger) set_height (Large);
 325                return;
 326        }
 327        if (height == hLarge) {
 328                if (bigger) set_height (Largest);
 329                 else set_height (Larger);
 330                return;
 331        }
 332        if (height == hLarger) {
 333                 if (bigger) set_height (Large);
 334                 else set_height (Normal);
 335                return;
 336        }
 337        if (height == hNormal) {
 338                 if (bigger) set_height (Larger);
 339                 else set_height (Smaller);
 340                return;
 341        }
 342        if (height == hSmaller) {
 343                 if (bigger) set_height (Normal);
 344                 else set_height (Small);
 345                return;
 346        }
 347        if (height == hSmall) {
 348                 if (bigger) set_height (Smaller);
 349                return;
 350        }
 351 }
 352
 353 void
 354 TimeAxisView::set_height (TrackHeight h)
 355 {
 356         height_style = h;
 357         set_height_pixels (height_to_pixels (h));
 358 }
 359
 360 void
 361 TimeAxisView::set_height_pixels (uint32_t h)
 362 {
 363         height = h;
 364         controls_hbox.set_size_request (-1, height + ((order == 0) ? 1 : 0));
 365         //cerr << "TimeAxisView::set_height_pixels() called h = " << h << endl;//DEBUG
 366         if (canvas_item_visible (selection_group)) {
 367                 /* resize the selection rect */
 368                 show_selection (editor.get_selection().time);
 369         }
 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
 520         editor.set_selected_track (*this, Selection::Add);
 521         display_menu->popup (1, when);
 522 }
 523
 524 gint
 525 TimeAxisView::size_click (GdkEventButton *ev)
 526 {
 527         editor.set_selected_track (*this, Selection::Add);
 528         popup_size_menu (ev->time);
 529         return TRUE;
 530 }
 531
 532 void
 533 TimeAxisView::popup_size_menu (guint32 when)
 534 {
 535         if (size_menu == 0) {
 536                 build_size_menu ();
 537         }
 538         size_menu->popup (1, when);
 539 }
 540
 541 void
 542 TimeAxisView::set_selected (bool yn)
 543 {
 544         if (yn == _selected) {
 545                 return;
 546         }
 547
 548         Selectable::set_selected (yn);
 549
 550         if (_selected) {
 551                 controls_ebox.set_name (controls_base_selected_name);
 552                 controls_hbox.set_name (controls_base_selected_name);
 553
 554                 /* propagate any existing selection, if the mode is right */
 555
 556                 if (editor.current_mouse_mode() == Editing::MouseRange && !editor.get_selection().time.empty()) {
 557                         show_selection (editor.get_selection().time);
 558                 }
 559
 560         } else {
 561                 controls_ebox.set_name (controls_base_unselected_name);
 562                 controls_hbox.set_name (controls_base_unselected_name);
 563
 564                 hide_selection ();
 565
 566                 /* children will be set for the yn=true case. but when deselecting
 567                    the editor only has a list of top-level trackviews, so we
 568                    have to do this here.
 569                 */
 570
 571                 for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 572                         (*i)->set_selected (false);
 573                 }
 574         }
 575 }
 576
 577 void
 578 TimeAxisView::build_size_menu ()
 579 {
 580         using namespace Menu_Helpers;
 581
 582         size_menu = new Menu;
 583         size_menu->set_name ("ArdourContextMenu");
 584         MenuList& items = size_menu->items();
 585
 586         items.push_back (MenuElem (_("Largest"), bind (mem_fun (*this, &TimeAxisView::set_height), Largest)));
 587         items.push_back (MenuElem (_("Large"), bind (mem_fun (*this, &TimeAxisView::set_height), Large)));
 588         items.push_back (MenuElem (_("Larger"), bind (mem_fun (*this, &TimeAxisView::set_height), Larger)));
 589         items.push_back (MenuElem (_("Normal"), bind (mem_fun (*this, &TimeAxisView::set_height), Normal)));
 590         items.push_back (MenuElem (_("Smaller"), bind (mem_fun (*this, &TimeAxisView::set_height),Smaller)));
 591         items.push_back (MenuElem (_("Small"), bind (mem_fun (*this, &TimeAxisView::set_height), Small)));
 592 }
 593
 594 void
 595 TimeAxisView::build_display_menu ()
 596 {
 597         using namespace Menu_Helpers;
 598
 599         display_menu = new Menu;
 600         display_menu->set_name ("ArdourContextMenu");
 601
 602         // Just let implementing classes define what goes into the manu
 603 }
 604
 605 void
 606 TimeAxisView::set_samples_per_unit (double spu)
 607 {
 608         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 609                 (*i)->set_samples_per_unit (spu);
 610         }
 611 }
 612
 613 void
 614 TimeAxisView::show_timestretch (nframes_t start, nframes_t end)
 615 {
 616         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 617                 (*i)->show_timestretch (start, end);
 618         }
 619 }
 620
 621 void
 622 TimeAxisView::hide_timestretch ()
 623 {
 624         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 625                 (*i)->hide_timestretch ();
 626         }
 627 }
 628
 629 void
 630 TimeAxisView::show_selection (TimeSelection& ts)
 631 {
 632         double x1;
 633         double x2;
 634         double y2;
 635         SelectionRect *rect;
 636
 637         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 638                 (*i)->show_selection (ts);
 639         }
 640
 641         if (canvas_item_visible (selection_group)) {
 642                 while (!used_selection_rects.empty()) {
 643                         free_selection_rects.push_front (used_selection_rects.front());
 644                         used_selection_rects.pop_front();
 645                         free_selection_rects.front()->rect->hide();
 646                         free_selection_rects.front()->start_trim->hide();
 647                         free_selection_rects.front()->end_trim->hide();
 648                 }
 649                 selection_group->hide();
 650         }
 651
 652         selection_group->show();
 653         selection_group->raise_to_top();
 654
 655         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 656                 nframes_t start, end, cnt;
 657
 658                 start = (*i).start;
 659                 end = (*i).end;
 660                 cnt = end - start + 1;
 661
 662                 rect = get_selection_rect ((*i).id);
 663
 664                 x1 = editor.frame_to_unit (start);
 665                 x2 = editor.frame_to_unit (start + cnt - 1);
 666                 y2 = height;
 667
 668                 rect->rect->property_x1() = x1;
 669                 rect->rect->property_y1() = 1.0;
 670                 rect->rect->property_x2() = x2;
 671                 rect->rect->property_y2() = y2;
 672
 673                 // trim boxes are at the top for selections
 674
 675                 if (x2 > x1) {
 676                         rect->start_trim->property_x1() = x1;
 677                         rect->start_trim->property_y1() = 1.0;
 678                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 679                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 680
 681                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 682                         rect->end_trim->property_y1() = 1.0;
 683                         rect->end_trim->property_x2() = x2;
 684                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 685
 686                         rect->start_trim->show();
 687                         rect->end_trim->show();
 688                 } else {
 689                         rect->start_trim->hide();
 690                         rect->end_trim->hide();
 691                 }
 692
 693                 rect->rect->show ();
 694                 used_selection_rects.push_back (rect);
 695         }
 696 }
 697
 698 void
 699 TimeAxisView::reshow_selection (TimeSelection& ts)
 700 {
 701         show_selection (ts);
 702
 703         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 704                 (*i)->show_selection (ts);
 705         }
 706 }
 707
 708 void
 709 TimeAxisView::hide_selection ()
 710 {
 711         if (canvas_item_visible (selection_group)) {
 712                 while (!used_selection_rects.empty()) {
 713                         free_selection_rects.push_front (used_selection_rects.front());
 714                         used_selection_rects.pop_front();
 715                         free_selection_rects.front()->rect->hide();
 716                         free_selection_rects.front()->start_trim->hide();
 717                         free_selection_rects.front()->end_trim->hide();
 718                 }
 719                 selection_group->hide();
 720         }
 721
 722         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 723                 (*i)->hide_selection ();
 724         }
 725 }
 726
 727 void
 728 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 729 {
 730         /* find the selection rect this is for. we have the item corresponding to one
 731            of the trim handles.
 732          */
 733
 734         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 735                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 736
 737                         /* make one trim handle be "above" the other so that if they overlap,
 738                            the top one is the one last used.
 739                         */
 740
 741                         (*i)->rect->raise_to_top ();
 742                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 743                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 744
 745                         break;
 746                 }
 747         }
 748 }
 749
 750 SelectionRect *
 751 TimeAxisView::get_selection_rect (uint32_t id)
 752 {
 753         SelectionRect *rect;
 754
 755         /* check to see if we already have a visible rect for this particular selection ID */
 756
 757         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 758                 if ((*i)->id == id) {
 759                         return (*i);
 760                 }
 761         }
 762
 763         /* ditto for the free rect list */
 764
 765         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 766                 if ((*i)->id == id) {
 767                         SelectionRect* ret = (*i);
 768                         free_selection_rects.erase (i);
 769                         return ret;
 770                 }
 771         }
 772
 773         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 774
 775         if (free_selection_rects.empty()) {
 776
 777                 rect = new SelectionRect;
 778
 779                 rect->rect = new SimpleRect (*selection_group);
 780                 rect->rect->property_x1() = 0.0;
 781                 rect->rect->property_y1() = 0.0;
 782                 rect->rect->property_x2() = 0.0;
 783                 rect->rect->property_y2() = 0.0;
 784                 rect->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
 785                 rect->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 786
 787                 rect->start_trim = new SimpleRect (*selection_group);
 788                 rect->start_trim->property_x1() = 0.0;
 789                 rect->start_trim->property_x2() = 0.0;
 790                 rect->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 791                 rect->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 792
 793                 rect->end_trim = new SimpleRect (*selection_group);
 794                 rect->end_trim->property_x1() = 0.0;
 795                 rect->end_trim->property_x2() = 0.0;
 796                 rect->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 797                 rect->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 798
 799                 free_selection_rects.push_front (rect);
 800
 801                 rect->rect->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 802                 rect->start_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 803                 rect->end_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 804         }
 805
 806         rect = free_selection_rects.front();
 807         rect->id = id;
 808         free_selection_rects.pop_front();
 809         return rect;
 810 }
 811
 812 struct null_deleter { void operator()(void const *) const {} };
 813
 814 bool
 815 TimeAxisView::is_child (TimeAxisView* tav)
 816 {
 817         return find (children.begin(), children.end(), boost::shared_ptr<TimeAxisView>(tav, null_deleter())) != children.end();
 818 }
 819
 820 void
 821 TimeAxisView::add_child (boost::shared_ptr<TimeAxisView> child)
 822 {
 823         children.push_back (child);
 824 }
 825
 826 void
 827 TimeAxisView::remove_child (boost::shared_ptr<TimeAxisView> child)
 828 {
 829         Children::iterator i;
 830
 831         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 832                 children.erase (i);
 833         }
 834 }
 835
 836 void
 837 TimeAxisView::get_selectables (nframes_t start, nframes_t end, double top, double bot, list<Selectable*>& result)
 838 {
 839         return;
 840 }
 841
 842 void
 843 TimeAxisView::get_inverted_selectables (Selection& sel, list<Selectable*>& result)
 844 {
 845         return;
 846 }
 847
 848 bool
 849 TimeAxisView::touched (double top, double bot)
 850 {
 851         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 852            y_position is the "origin" or "top" of the track.
 853          */
 854
 855         double mybot = y_position + height;
 856
 857         return ((y_position <= bot && y_position >= top) ||
 858                 ((mybot <= bot) && (top < mybot)) ||
 859                 (mybot >= bot && y_position < top));
 860 }
 861
 862 void
 863 TimeAxisView::set_parent (TimeAxisView& p)
 864 {
 865         parent = &p;
 866 }
 867
 868 bool
 869 TimeAxisView::has_state () const
 870 {
 871         return _has_state;
 872 }
 873
 874 TimeAxisView*
 875 TimeAxisView::get_parent_with_state ()
 876 {
 877         if (parent == 0) {
 878                 return 0;
 879         }
 880
 881         if (parent->has_state()) {
 882                 return parent;
 883         }
 884
 885         return parent->get_parent_with_state ();
 886 }
 887
 888 void
 889 TimeAxisView::set_state (const XMLNode& node)
 890 {
 891         const XMLProperty *prop;
 892
 893         if ((prop = node.property ("track_height")) != 0) {
 894
 895                 if (prop->value() == "largest") {
 896                         set_height (Largest);
 897                 } else if (prop->value() == "large") {
 898                         set_height (Large);
 899                 } else if (prop->value() == "larger") {
 900                         set_height (Larger);
 901                 } else if (prop->value() == "normal") {
 902                         set_height (Normal);
 903                 } else if (prop->value() == "smaller") {
 904                         set_height (Smaller);
 905                 } else if (prop->value() == "small") {
 906                         set_height (Small);
 907                 } else {
 908                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
 909                         set_height (Normal);
 910                 }
 911
 912         } else {
 913                 set_height (Normal);
 914         }
 915 }
 916
 917 void
 918 TimeAxisView::reset_height()
 919 {
 920         set_height_pixels (height);
 921
 922         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 923                 (*i)->set_height_pixels ((TrackHeight)(*i)->height);
 924         }
 925 }
 926
 927 uint32_t
 928 TimeAxisView::height_to_pixels (TrackHeight h)
 929 {
 930         switch (h) {
 931         case Largest:
 932                 return hLargest;
 933         case Large:
 934                 return hLarge;
 935         case Larger:
 936                 return hLarger;
 937         case Normal:
 938                 return hNormal;
 939         case Smaller:
 940                 return hSmaller;
 941         case Small:
 942                 return hSmall;
 943         }
 944
 945         // what is wrong with gcc ?
 946
 947         return hNormal;
 948 }
 949
 950 void
 951 TimeAxisView::compute_controls_size_info ()
 952 {
 953         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
 954         Gtk::Table two_row_table (2, 8);
 955         Gtk::Table one_row_table (1, 8);
 956         Button* buttons[5];
 957         const int border_width = 2;
 958         const int extra_height = (2 * border_width) + 2; // 2 pixels for the controls frame
 959
 960         window.add (one_row_table);
 961
 962         one_row_table.set_border_width (border_width);
 963         one_row_table.set_row_spacings (0);
 964         one_row_table.set_col_spacings (0);
 965         one_row_table.set_homogeneous (true);
 966
 967         two_row_table.set_border_width (border_width);
 968         two_row_table.set_row_spacings (0);
 969         two_row_table.set_col_spacings (0);
 970         two_row_table.set_homogeneous (true);
 971
 972         for (int i = 0; i < 5; ++i) {
 973                 buttons[i] = manage (new Button (X_("f")));
 974                 buttons[i]->set_name ("TrackMuteButton");
 975         }
 976
 977         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 978
 979         one_row_table.show_all ();
 980         Gtk::Requisition req(one_row_table.size_request ());
 981
 982
 983         // height required to show 1 row of buttons
 984
 985         hSmaller = req.height + extra_height;
 986
 987         window.remove ();
 988         window.add (two_row_table);
 989
 990         two_row_table.attach (*buttons[1], 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 991         two_row_table.attach (*buttons[2], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 992         two_row_table.attach (*buttons[3], 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 993         two_row_table.attach (*buttons[4], 8, 9, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 994
 995         two_row_table.show_all ();
 996         req = two_row_table.size_request ();
 997
 998         // height required to show all normal buttons
 999
1000         hNormal = req.height + extra_height;
1001
1002         // these heights are all just larger than normal. no more
1003         // elements are visible (yet).
1004
1005         hLarger = hNormal + 50;
1006         hLarge = hNormal + 150;
1007         hLargest = hNormal + 250;
1008
1009         // height required to show track name
1010
1011         hSmall = 27;
1012 }
1013
1014 void
1015 TimeAxisView::show_name_label ()
1016 {
1017         if (!(name_packing & NameLabelPacked)) {
1018                 name_hbox.pack_start (name_label, true, true);
1019                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1020                 name_hbox.show ();
1021                 name_label.show ();
1022         }
1023 }
1024
1025 void
1026 TimeAxisView::show_name_entry ()
1027 {
1028         if (!(name_packing & NameEntryPacked)) {
1029                 name_hbox.pack_start (name_entry, true, true);
1030                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1031                 name_hbox.show ();
1032                 name_entry.show ();
1033         }
1034 }
1035
1036 void
1037 TimeAxisView::hide_name_label ()
1038 {
1039         if (name_packing & NameLabelPacked) {
1040                 name_hbox.remove (name_label);
1041                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1042         }
1043 }
1044
1045 void
1046 TimeAxisView::hide_name_entry ()
1047 {
1048         if (name_packing & NameEntryPacked) {
1049                 name_hbox.remove (name_entry);
1050                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1051         }
1052 }
1053
1054 void
1055 TimeAxisView::color_handler ()
1056 {
1057
1058         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
1059
1060                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1061                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1062
1063                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1064                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1065
1066                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1067                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1068         }
1069
1070         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
1071
1072                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1073                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1074
1075                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1076                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1077
1078                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1079                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1080         }
1081 }
1082
1083 TimeAxisView*
1084 TimeAxisView::covers_y_position (double y)
1085 {
1086         if (hidden()) {
1087                 return 0;
1088         }
1089
1090         if (y_position <= y && y < (y_position + height)) {
1091                 return this;
1092         }
1093
1094         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1095                 TimeAxisView* tv;
1096
1097                 if ((tv = (*i)->covers_y_position (y)) != 0) {
1098                         return tv;
1099                 }
1100         }
1101
1102         return 0;
1103 }