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 "region_view.h"
  46 #include "ghostregion.h"
  47 #include "simplerect.h"
  48 #include "simpleline.h"
  49 #include "selection.h"
  50 #include "keyboard.h"
  51 #include "rgb_macros.h"
  52 #include "utils.h"
  53
  54 #include "i18n.h"
  55
  56 using namespace Gtk;
  57 using namespace Gdk;
  58 using namespace sigc;
  59 using namespace ARDOUR;
  60 using namespace PBD;
  61 using namespace Editing;
  62 using namespace ArdourCanvas;
  63
  64 const double trim_handle_size = 6.0; /* pixels */
  65
  66 uint32_t TimeAxisView::hLargest = 0;
  67 uint32_t TimeAxisView::hLarge = 0;
  68 uint32_t TimeAxisView::hLarger = 0;
  69 uint32_t TimeAxisView::hNormal = 0;
  70 uint32_t TimeAxisView::hSmaller = 0;
  71 uint32_t TimeAxisView::hSmall = 0;
  72 bool TimeAxisView::need_size_info = true;
  73
  74 TimeAxisView::TimeAxisView (ARDOUR::Session& sess, PublicEditor& ed, TimeAxisView* rent, Canvas& canvas)
  75         : AxisView (sess),
  76           editor (ed),
  77           y_position(0),
  78           order(0),
  79           controls_table (2, 8)
  80 {
  81         if (need_size_info) {
  82                 compute_controls_size_info ();
  83                 need_size_info = false;
  84         }
  85
  86         canvas_display = new Group (*ed.get_trackview_group (), 0.0, 0.0);
  87
  88         ghost_group = new Group (*canvas_display);
  89         ghost_group->lower_to_bottom();
  90         ghost_group->show();
  91
  92         selection_group = new Group (*canvas_display);
  93         selection_group->hide();
  94
  95         control_parent = 0;
  96         display_menu = 0;
  97         size_menu = 0;
  98         _hidden = false;
  99         in_destructor = false;
 100         height = 0;
 101         effective_height = 0;
 102         parent = rent;
 103         _has_state = false;
 104         last_name_entry_key_press_event = 0;
 105         name_packing = NamePackingBits (0);
 106         resize_drag_start = -1;
 107
 108         /*
 109           Create the standard LHS Controls
 110           We create the top-level container and name add the name label here,
 111           subclasses can add to the layout as required
 112         */
 113
 114         name_entry.set_name ("EditorTrackNameDisplay");
 115         name_entry.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_release));
 116         name_entry.signal_button_press_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_press));
 117         name_entry.signal_key_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_key_release));
 118         name_entry.signal_activate().connect (mem_fun(*this, &TimeAxisView::name_entry_activated));
 119         name_entry.signal_focus_in_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 120         name_entry.signal_focus_out_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 121         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 122
 123         name_label.set_name ("TrackLabel");
 124         name_label.set_alignment (0.0, 0.5);
 125
 126         /* typically, either name_label OR name_entry are visible,
 127            but not both. its up to derived classes to show/hide them as they
 128            wish.
 129         */
 130
 131         name_hbox.show ();
 132
 133         controls_table.set_border_width (2);
 134         controls_table.set_row_spacings (0);
 135         controls_table.set_col_spacings (0);
 136         controls_table.set_homogeneous (true);
 137
 138         controls_table.attach (name_hbox, 0, 5, 0, 1,  Gtk::FILL|Gtk::EXPAND,  Gtk::FILL|Gtk::EXPAND, 3, 0);
 139         controls_table.show_all ();
 140         controls_table.set_no_show_all ();
 141
 142         resizer.set_size_request (10, 10);
 143         resizer.set_name ("ResizeHandle");
 144         resizer.signal_expose_event().connect (mem_fun (*this, &TimeAxisView::resizer_expose));
 145         resizer.signal_button_press_event().connect (mem_fun (*this, &TimeAxisView::resizer_button_press));
 146         resizer.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::resizer_button_release));
 147         resizer.signal_motion_notify_event().connect (mem_fun (*this, &TimeAxisView::resizer_motion));
 148         resizer.set_events (Gdk::BUTTON_PRESS_MASK|
 149                             Gdk::BUTTON_RELEASE_MASK|
 150                             Gdk::POINTER_MOTION_MASK|
 151                             Gdk::SCROLL_MASK);
 152
 153         resizer_box.pack_start (resizer, false, false);
 154         resizer.show ();
 155         resizer_box.show();
 156
 157         HSeparator* separator = manage (new HSeparator());
 158
 159         controls_vbox.pack_start (controls_table, false, false);
 160         controls_vbox.pack_end (*separator, false, false);
 161         controls_vbox.pack_end (resizer_box, false, true);
 162         controls_vbox.show ();
 163
 164         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 165         controls_ebox.add (controls_vbox);
 166         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 167         controls_ebox.set_flags (CAN_FOCUS);
 168
 169         controls_ebox.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 170         controls_ebox.signal_scroll_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 171
 172         controls_hbox.pack_start (controls_ebox,true,true);
 173         controls_hbox.show ();
 174
 175         // controls_frame.add (controls_hbox);
 176         // controls_frame.set_name ("TimeAxisViewControlsBaseUnselected");
 177         // controls_vbox.set_name ("TimeAxisViewControlsBaseUnselected");
 178         // controls_frame.set_shadow_type (Gtk::SHADOW_ETCHED_OUT);
 179
 180         ColorsChanged.connect (mem_fun (*this, &TimeAxisView::color_handler));
 181 }
 182
 183 TimeAxisView::~TimeAxisView()
 184 {
 185         in_destructor = true;
 186
 187         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 188                 delete *i;
 189         }
 190
 191         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 192                 delete (*i)->rect;
 193                 delete (*i)->start_trim;
 194                 delete (*i)->end_trim;
 195
 196         }
 197
 198         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 199                 delete (*i)->rect;
 200                 delete (*i)->start_trim;
 201                 delete (*i)->end_trim;
 202         }
 203
 204         for (list<SimpleLine*>::iterator i = feature_lines.begin(); i != feature_lines.end(); ++i) {
 205                 delete (*i);
 206         }
 207
 208         if (selection_group) {
 209                 delete selection_group;
 210                 selection_group = 0;
 211         }
 212
 213         if (canvas_display) {
 214                 delete canvas_display;
 215                 canvas_display = 0;
 216         }
 217
 218         if (display_menu) {
 219                 delete display_menu;
 220                 display_menu = 0;
 221         }
 222 }
 223
 224 guint32
 225 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 226 {
 227         if (control_parent) {
 228                 control_parent->reorder_child (controls_hbox, nth);
 229         } else {
 230                 control_parent = parent;
 231                 parent->pack_start (controls_hbox, false, false);
 232                 parent->reorder_child (controls_hbox, nth);
 233         }
 234
 235         order = nth;
 236
 237         if (y_position != y) {
 238                 canvas_display->property_y () = y;
 239                 canvas_display->move (0.0, 0.0);
 240                 y_position = y;
 241
 242         }
 243
 244         canvas_display->raise_to_top ();
 245
 246         if (_marked_for_display) {
 247                 controls_hbox.show ();
 248                 controls_ebox.show ();
 249         }
 250
 251         _hidden = false;
 252
 253         effective_height = current_height();
 254
 255         /* now show children */
 256
 257         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 258                 if (canvas_item_visible ((*i)->canvas_display)) {
 259                         ++nth;
 260                         effective_height += (*i)->show_at (y + effective_height, nth, parent);
 261                 }
 262         }
 263
 264         return effective_height;
 265 }
 266
 267 void
 268 TimeAxisView::clip_to_viewport ()
 269 {
 270         if (_marked_for_display) {
 271                 if (y_position  +  effective_height < editor.get_trackview_group_vertical_offset () || y_position > editor.get_trackview_group_vertical_offset () + canvas_display->get_canvas()->get_height()) {
 272                         canvas_display->hide ();
 273                         return;
 274                 }
 275                 canvas_display->show ();
 276         }
 277         return;
 278 }
 279
 280 bool
 281 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 282 {
 283         switch (ev->direction) {
 284         case GDK_SCROLL_UP:
 285                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 286                         step_height (true);
 287                         return true;
 288                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 289                         editor.scroll_tracks_up_line();
 290                         return true;
 291                 }
 292                 break;
 293
 294         case GDK_SCROLL_DOWN:
 295                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 296                         step_height (false);
 297                         return true;
 298                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 299                         editor.scroll_tracks_down_line();
 300                         return true;
 301                 }
 302                 break;
 303
 304         default:
 305                 /* no handling for left/right, yet */
 306                 break;
 307         }
 308
 309         return false;
 310 }
 311
 312 bool
 313 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 314 {
 315         switch (ev->button) {
 316         case 1:
 317                 selection_click (ev);
 318                 break;
 319
 320         case 3:
 321                 popup_display_menu (ev->time);
 322                 break;
 323         }
 324
 325         return true;
 326 }
 327
 328 void
 329 TimeAxisView::selection_click (GdkEventButton* ev)
 330 {
 331         Selection::Operation op = Keyboard::selection_type (ev->state);
 332         editor.set_selected_track (*this, op, false);
 333 }
 334
 335 void
 336 TimeAxisView::hide ()
 337 {
 338         if (_hidden) {
 339                 return;
 340         }
 341
 342         canvas_display->hide();
 343         controls_hbox.hide ();
 344
 345         if (control_parent) {
 346                 control_parent->remove (controls_hbox);
 347                 control_parent = 0;
 348         }
 349
 350         y_position = -1;
 351         _hidden = true;
 352
 353         /* now hide children */
 354
 355         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 356                 (*i)->hide ();
 357         }
 358
 359         Hiding ();
 360 }
 361
 362 void
 363 TimeAxisView::step_height (bool bigger)
 364 {
 365         static const uint32_t step = 20;
 366
 367         if (bigger) {
 368                 set_height (height + step);
 369         } else {
 370                 if (height > step) {
 371                         set_height (std::max (height - step, hSmall));
 372                 } else if (height != hSmall) {
 373                         set_height (hSmall);
 374                 }
 375         }
 376 }
 377
 378 void
 379 TimeAxisView::set_heights (uint32_t h)
 380 {
 381         TrackSelection& ts (editor.get_selection().tracks);
 382
 383         for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
 384                 (*i)->set_height (h);
 385         }
 386 }
 387
 388 void
 389 TimeAxisView::set_height(uint32_t h)
 390 {
 391         controls_ebox.property_height_request () = h;
 392         height = h;
 393
 394         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 395                 (*i)->set_height ();
 396         }
 397
 398         if (canvas_item_visible (selection_group)) {
 399                 /* resize the selection rect */
 400                 show_selection (editor.get_selection().time);
 401         }
 402
 403         reshow_feature_lines ();
 404 }
 405
 406 bool
 407 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 408 {
 409         PublicEditor::TrackViewList *allviews = 0;
 410         PublicEditor::TrackViewList::iterator i;
 411
 412         switch (ev->keyval) {
 413         case GDK_Escape:
 414                 name_entry.select_region (0,0);
 415                 controls_ebox.grab_focus ();
 416                 name_entry_changed ();
 417                 return true;
 418
 419         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 420          * generates a different ev->keyval, rather than setting
 421          * ev->state.
 422          */
 423         case GDK_ISO_Left_Tab:
 424         case GDK_Tab:
 425                 name_entry_changed ();
 426                 allviews = editor.get_valid_views (0);
 427                 if (allviews != 0) {
 428                         i = find (allviews->begin(), allviews->end(), this);
 429                         if (ev->keyval == GDK_Tab) {
 430                                 if (i != allviews->end()) {
 431                                         do {
 432                                                 if (++i == allviews->end()) { return true; }
 433                                         } while((*i)->hidden());
 434                                 }
 435                         } else {
 436                                 if (i != allviews->begin()) {
 437                                         do {
 438                                                 if (--i == allviews->begin()) { return true; }
 439                                         } while ((*i)->hidden());
 440                                 }
 441                         }
 442
 443
 444                         /* resize to show editable name display */
 445
 446                         if ((*i)->current_height() >= hSmall && (*i)->current_height() < hNormal) {
 447                                 (*i)->set_height (hSmaller);
 448                         }
 449
 450                         (*i)->name_entry.grab_focus();
 451                 }
 452                 return true;
 453
 454         case GDK_Up:
 455         case GDK_Down:
 456                 name_entry_changed ();
 457                 return true;
 458
 459         default:
 460                 break;
 461         }
 462
 463 #ifdef TIMEOUT_NAME_EDIT
 464         /* adapt the timeout to reflect the user's typing speed */
 465
 466         guint32 name_entry_timeout;
 467
 468         if (last_name_entry_key_press_event) {
 469                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 470                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 471         } else {
 472                 /* start with a 1 second timeout */
 473                 name_entry_timeout = 1000;
 474         }
 475
 476         last_name_entry_key_press_event = ev->time;
 477
 478         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 479
 480         name_entry_key_timeout.disconnect();
 481         name_entry_key_timeout = Glib::signal_timeout().connect (mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 482 #endif
 483
 484         return false;
 485 }
 486
 487 bool
 488 TimeAxisView::name_entry_focus_in (GdkEventFocus* ev)
 489 {
 490         name_entry.select_region (0, -1);
 491         name_entry.set_name ("EditorActiveTrackNameDisplay");
 492         return false;
 493 }
 494
 495 bool
 496 TimeAxisView::name_entry_focus_out (GdkEventFocus* ev)
 497 {
 498         /* clean up */
 499
 500         last_name_entry_key_press_event = 0;
 501         name_entry_key_timeout.disconnect ();
 502         name_entry.set_name ("EditorTrackNameDisplay");
 503         name_entry.select_region (0,0);
 504
 505         /* do the real stuff */
 506
 507         name_entry_changed ();
 508
 509         return false;
 510 }
 511
 512 bool
 513 TimeAxisView::name_entry_key_timed_out ()
 514 {
 515         name_entry_activated();
 516         return false;
 517 }
 518
 519 void
 520 TimeAxisView::name_entry_activated ()
 521 {
 522         controls_ebox.grab_focus();
 523 }
 524
 525 void
 526 TimeAxisView::name_entry_changed ()
 527 {
 528 }
 529
 530 bool
 531 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 532 {
 533         if (ev->button == 3) {
 534                 return true;
 535         }
 536         return false;
 537 }
 538
 539 bool
 540 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 541 {
 542         if (ev->button == 3) {
 543                 popup_display_menu (ev->time);
 544                 return true;
 545         }
 546         return false;
 547 }
 548
 549 void
 550 TimeAxisView::conditionally_add_to_selection ()
 551 {
 552         Selection& s (editor.get_selection());
 553
 554         if (!s.selected (this)) {
 555                 editor.set_selected_track (*this, Selection::Set);
 556         }
 557 }
 558
 559
 560 void
 561 TimeAxisView::popup_display_menu (guint32 when)
 562 {
 563         if (display_menu == 0) {
 564                 build_display_menu ();
 565         }
 566
 567         conditionally_add_to_selection ();
 568         display_menu->popup (1, when);
 569 }
 570
 571 gint
 572 TimeAxisView::size_click (GdkEventButton *ev)
 573 {
 574         conditionally_add_to_selection ();
 575         popup_size_menu (ev->time);
 576         return TRUE;
 577 }
 578
 579 void
 580 TimeAxisView::popup_size_menu (guint32 when)
 581 {
 582         if (size_menu == 0) {
 583                 build_size_menu ();
 584         }
 585         size_menu->popup (1, when);
 586 }
 587
 588 void
 589 TimeAxisView::set_selected (bool yn)
 590 {
 591         if (yn == _selected) {
 592                 return;
 593         }
 594
 595         Selectable::set_selected (yn);
 596
 597         if (_selected) {
 598                 controls_ebox.set_name (controls_base_selected_name);
 599                 controls_hbox.set_name (controls_base_selected_name);
 600                 controls_vbox.set_name (controls_base_selected_name);
 601                 /* propagate any existing selection, if the mode is right */
 602
 603                 if (editor.current_mouse_mode() == Editing::MouseRange && !editor.get_selection().time.empty()) {
 604                         show_selection (editor.get_selection().time);
 605                 }
 606
 607         } else {
 608                 controls_ebox.set_name (controls_base_unselected_name);
 609                 controls_hbox.set_name (controls_base_unselected_name);
 610                 controls_vbox.set_name (controls_base_unselected_name);
 611                 hide_selection ();
 612
 613                 /* children will be set for the yn=true case. but when deselecting
 614                    the editor only has a list of top-level trackviews, so we
 615                    have to do this here.
 616                 */
 617
 618                 for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 619                         (*i)->set_selected (false);
 620                 }
 621         }
 622
 623         resizer.queue_draw ();
 624 }
 625
 626 void
 627 TimeAxisView::build_size_menu ()
 628 {
 629         using namespace Menu_Helpers;
 630
 631         size_menu = new Menu;
 632         size_menu->set_name ("ArdourContextMenu");
 633         MenuList& items = size_menu->items();
 634
 635         items.push_back (MenuElem (_("Largest"), bind (mem_fun (*this, &TimeAxisView::set_heights), hLargest)));
 636         items.push_back (MenuElem (_("Large"), bind (mem_fun (*this, &TimeAxisView::set_heights), hLarge)));
 637         items.push_back (MenuElem (_("Larger"), bind (mem_fun (*this, &TimeAxisView::set_heights), hLarger)));
 638         items.push_back (MenuElem (_("Normal"), bind (mem_fun (*this, &TimeAxisView::set_heights), hNormal)));
 639         items.push_back (MenuElem (_("Smaller"), bind (mem_fun (*this, &TimeAxisView::set_heights),hSmaller)));
 640         items.push_back (MenuElem (_("Small"), bind (mem_fun (*this, &TimeAxisView::set_heights), hSmall)));
 641 }
 642
 643 void
 644 TimeAxisView::build_display_menu ()
 645 {
 646         using namespace Menu_Helpers;
 647
 648         display_menu = new Menu;
 649         display_menu->set_name ("ArdourContextMenu");
 650
 651         // Just let implementing classes define what goes into the manu
 652 }
 653
 654 void
 655 TimeAxisView::set_samples_per_unit (double spu)
 656 {
 657         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 658                 (*i)->set_samples_per_unit (spu);
 659         }
 660
 661         AnalysisFeatureList::const_iterator i;
 662         list<ArdourCanvas::SimpleLine*>::iterator l;
 663
 664         for (i = analysis_features.begin(), l = feature_lines.begin(); i != analysis_features.end() && l != feature_lines.end(); ++i, ++l) {
 665                 (*l)->property_x1() = editor.frame_to_pixel (*i);
 666                 (*l)->property_x2() = editor.frame_to_pixel (*i);
 667         }
 668 }
 669
 670 void
 671 TimeAxisView::show_timestretch (nframes_t start, nframes_t end)
 672 {
 673         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 674                 (*i)->show_timestretch (start, end);
 675         }
 676 }
 677
 678 void
 679 TimeAxisView::hide_timestretch ()
 680 {
 681         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 682                 (*i)->hide_timestretch ();
 683         }
 684 }
 685
 686 void
 687 TimeAxisView::show_selection (TimeSelection& ts)
 688 {
 689         double x1;
 690         double x2;
 691         double y2;
 692         SelectionRect *rect;
 693
 694         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 695                 (*i)->show_selection (ts);
 696         }
 697
 698         if (canvas_item_visible (selection_group)) {
 699                 while (!used_selection_rects.empty()) {
 700                         free_selection_rects.push_front (used_selection_rects.front());
 701                         used_selection_rects.pop_front();
 702                         free_selection_rects.front()->rect->hide();
 703                         free_selection_rects.front()->start_trim->hide();
 704                         free_selection_rects.front()->end_trim->hide();
 705                 }
 706                 selection_group->hide();
 707         }
 708
 709         selection_group->show();
 710         selection_group->raise_to_top();
 711
 712         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 713                 nframes_t start, end, cnt;
 714
 715                 start = (*i).start;
 716                 end = (*i).end;
 717                 cnt = end - start + 1;
 718
 719                 rect = get_selection_rect ((*i).id);
 720
 721                 x1 = editor.frame_to_unit (start);
 722                 x2 = editor.frame_to_unit (start + cnt - 1);
 723                 y2 = current_height();
 724
 725                 rect->rect->property_x1() = x1;
 726                 rect->rect->property_y1() = 1.0;
 727                 rect->rect->property_x2() = x2;
 728                 rect->rect->property_y2() = y2;
 729
 730                 // trim boxes are at the top for selections
 731
 732                 if (x2 > x1) {
 733                         rect->start_trim->property_x1() = x1;
 734                         rect->start_trim->property_y1() = 1.0;
 735                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 736                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 737
 738                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 739                         rect->end_trim->property_y1() = 1.0;
 740                         rect->end_trim->property_x2() = x2;
 741                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 742
 743                         rect->start_trim->show();
 744                         rect->end_trim->show();
 745                 } else {
 746                         rect->start_trim->hide();
 747                         rect->end_trim->hide();
 748                 }
 749
 750                 rect->rect->show ();
 751                 used_selection_rects.push_back (rect);
 752         }
 753 }
 754
 755 void
 756 TimeAxisView::reshow_selection (TimeSelection& ts)
 757 {
 758         show_selection (ts);
 759
 760         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 761                 (*i)->show_selection (ts);
 762         }
 763 }
 764
 765 void
 766 TimeAxisView::hide_selection ()
 767 {
 768         if (canvas_item_visible (selection_group)) {
 769                 while (!used_selection_rects.empty()) {
 770                         free_selection_rects.push_front (used_selection_rects.front());
 771                         used_selection_rects.pop_front();
 772                         free_selection_rects.front()->rect->hide();
 773                         free_selection_rects.front()->start_trim->hide();
 774                         free_selection_rects.front()->end_trim->hide();
 775                 }
 776                 selection_group->hide();
 777         }
 778
 779         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 780                 (*i)->hide_selection ();
 781         }
 782 }
 783
 784 void
 785 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 786 {
 787         /* find the selection rect this is for. we have the item corresponding to one
 788            of the trim handles.
 789          */
 790
 791         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 792                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 793
 794                         /* make one trim handle be "above" the other so that if they overlap,
 795                            the top one is the one last used.
 796                         */
 797
 798                         (*i)->rect->raise_to_top ();
 799                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 800                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 801
 802                         break;
 803                 }
 804         }
 805 }
 806
 807 SelectionRect *
 808 TimeAxisView::get_selection_rect (uint32_t id)
 809 {
 810         SelectionRect *rect;
 811
 812         /* check to see if we already have a visible rect for this particular selection ID */
 813
 814         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 815                 if ((*i)->id == id) {
 816                         return (*i);
 817                 }
 818         }
 819
 820         /* ditto for the free rect list */
 821
 822         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 823                 if ((*i)->id == id) {
 824                         SelectionRect* ret = (*i);
 825                         free_selection_rects.erase (i);
 826                         return ret;
 827                 }
 828         }
 829
 830         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 831
 832         if (free_selection_rects.empty()) {
 833
 834                 rect = new SelectionRect;
 835
 836                 rect->rect = new SimpleRect (*selection_group);
 837                 rect->rect->property_x1() = 0.0;
 838                 rect->rect->property_y1() = 0.0;
 839                 rect->rect->property_x2() = 0.0;
 840                 rect->rect->property_y2() = 0.0;
 841                 rect->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
 842                 rect->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 843
 844                 rect->start_trim = new SimpleRect (*selection_group);
 845                 rect->start_trim->property_x1() = 0.0;
 846                 rect->start_trim->property_x2() = 0.0;
 847                 rect->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 848                 rect->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 849
 850                 rect->end_trim = new SimpleRect (*selection_group);
 851                 rect->end_trim->property_x1() = 0.0;
 852                 rect->end_trim->property_x2() = 0.0;
 853                 rect->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 854                 rect->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 855
 856                 free_selection_rects.push_front (rect);
 857
 858                 rect->rect->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 859                 rect->start_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 860                 rect->end_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 861         }
 862
 863         rect = free_selection_rects.front();
 864         rect->id = id;
 865         free_selection_rects.pop_front();
 866         return rect;
 867 }
 868
 869 struct null_deleter { void operator()(void const *) const {} };
 870
 871 bool
 872 TimeAxisView::is_child (TimeAxisView* tav)
 873 {
 874         return find (children.begin(), children.end(), boost::shared_ptr<TimeAxisView>(tav, null_deleter())) != children.end();
 875 }
 876
 877 void
 878 TimeAxisView::add_child (boost::shared_ptr<TimeAxisView> child)
 879 {
 880         children.push_back (child);
 881 }
 882
 883 void
 884 TimeAxisView::remove_child (boost::shared_ptr<TimeAxisView> child)
 885 {
 886         Children::iterator i;
 887
 888         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 889                 children.erase (i);
 890         }
 891 }
 892
 893 void
 894 TimeAxisView::get_selectables (nframes_t start, nframes_t end, double top, double bot, list<Selectable*>& result)
 895 {
 896         return;
 897 }
 898
 899 void
 900 TimeAxisView::get_inverted_selectables (Selection& sel, list<Selectable*>& result)
 901 {
 902         return;
 903 }
 904
 905 void
 906 TimeAxisView::add_ghost (RegionView* rv) {
 907         GhostRegion* gr = rv->add_ghost (*this);
 908
 909         if(gr) {
 910                 ghosts.push_back(gr);
 911                 gr->GoingAway.connect (mem_fun(*this, &TimeAxisView::erase_ghost));
 912         }
 913 }
 914
 915 void
 916 TimeAxisView::remove_ghost (RegionView* rv) {
 917         rv->remove_ghost_in (*this);
 918 }
 919
 920 void
 921 TimeAxisView::erase_ghost (GhostRegion* gr) {
 922         if(in_destructor) {
 923                 return;
 924         }
 925
 926         list<GhostRegion*>::iterator i;
 927
 928         for (i = ghosts.begin(); i != ghosts.end(); ++i) {
 929                 if ((*i) == gr) {
 930                         ghosts.erase (i);
 931                         break;
 932                 }
 933         }
 934 }
 935
 936 bool
 937 TimeAxisView::touched (double top, double bot)
 938 {
 939         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 940            y_position is the "origin" or "top" of the track.
 941          */
 942
 943         double mybot = y_position + current_height();
 944
 945         return ((y_position <= bot && y_position >= top) ||
 946                 ((mybot <= bot) && (top < mybot)) ||
 947                 (mybot >= bot && y_position < top));
 948 }
 949
 950 void
 951 TimeAxisView::set_parent (TimeAxisView& p)
 952 {
 953         parent = &p;
 954 }
 955
 956 bool
 957 TimeAxisView::has_state () const
 958 {
 959         return _has_state;
 960 }
 961
 962 TimeAxisView*
 963 TimeAxisView::get_parent_with_state ()
 964 {
 965         if (parent == 0) {
 966                 return 0;
 967         }
 968
 969         if (parent->has_state()) {
 970                 return parent;
 971         }
 972
 973         return parent->get_parent_with_state ();
 974 }
 975
 976
 977 XMLNode&
 978 TimeAxisView::get_state ()
 979 {
 980         XMLNode* node = new XMLNode ("TAV-" + name());
 981         char buf[32];
 982
 983         snprintf (buf, sizeof(buf), "%u", height);
 984         node->add_property ("height", buf);
 985         node->add_property ("marked-for-display", (_marked_for_display ? "1" : "0"));
 986         return *node;
 987 }
 988
 989 int
 990 TimeAxisView::set_state (const XMLNode& node)
 991 {
 992         const XMLProperty *prop;
 993
 994         if ((prop = node.property ("marked-for-display")) != 0) {
 995                 _marked_for_display = (prop->value() == "1");
 996         }
 997
 998         if ((prop = node.property ("track-height")) != 0) {
 999
1000                 if (prop->value() == "largest") {
1001                         set_height (hLargest);
1002                 } else if (prop->value() == "large") {
1003                         set_height (hLarge);
1004                 } else if (prop->value() == "larger") {
1005                         set_height (hLarger);
1006                 } else if (prop->value() == "normal") {
1007                         set_height (hNormal);
1008                 } else if (prop->value() == "smaller") {
1009                         set_height (hSmaller);
1010                 } else if (prop->value() == "small") {
1011                         set_height (hSmall);
1012                 } else {
1013                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
1014                         set_height (Normal);
1015                 }
1016
1017         } else if ((prop = node.property ("height")) != 0) {
1018
1019                 set_height (atoi (prop->value()));
1020
1021         } else {
1022
1023                 set_height (hNormal);
1024         }
1025
1026         return 0;
1027 }
1028
1029 void
1030 TimeAxisView::reset_height()
1031 {
1032         set_height (height);
1033
1034         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1035                 (*i)->set_height ((*i)->height);
1036         }
1037 }
1038
1039 void
1040 TimeAxisView::compute_controls_size_info ()
1041 {
1042         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
1043         Gtk::Table two_row_table (2, 8);
1044         Gtk::Table one_row_table (1, 8);
1045         Button* buttons[5];
1046         const int border_width = 2;
1047         const int extra_height = (2 * border_width)
1048                 //+ 2   // 2 pixels for the hseparator between TimeAxisView control areas
1049                 + 10; // resizer button (3 x 2 pixel elements + 2 x 2 pixel gaps)
1050
1051         window.add (one_row_table);
1052
1053         one_row_table.set_border_width (border_width);
1054         one_row_table.set_row_spacings (0);
1055         one_row_table.set_col_spacings (0);
1056         one_row_table.set_homogeneous (true);
1057
1058         two_row_table.set_border_width (border_width);
1059         two_row_table.set_row_spacings (0);
1060         two_row_table.set_col_spacings (0);
1061         two_row_table.set_homogeneous (true);
1062
1063         for (int i = 0; i < 5; ++i) {
1064                 buttons[i] = manage (new Button (X_("f")));
1065                 buttons[i]->set_name ("TrackMuteButton");
1066         }
1067
1068         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1069
1070         one_row_table.show_all ();
1071         Gtk::Requisition req(one_row_table.size_request ());
1072
1073
1074         // height required to show 1 row of buttons
1075
1076         hSmaller = req.height + extra_height;
1077
1078         window.remove ();
1079         window.add (two_row_table);
1080
1081         two_row_table.attach (*buttons[1], 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1082         two_row_table.attach (*buttons[2], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1083         two_row_table.attach (*buttons[3], 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1084         two_row_table.attach (*buttons[4], 8, 9, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1085
1086         two_row_table.show_all ();
1087         req = two_row_table.size_request ();
1088
1089         cerr << "Normal height is " << req.height << " + " << extra_height << endl;
1090
1091         // height required to show all normal buttons
1092
1093         hNormal = /*req.height*/ 48 + extra_height;
1094
1095         // these heights are all just larger than normal. no more
1096         // elements are visible (yet).
1097
1098         hLarger = hNormal + 50;
1099         hLarge = hNormal + 150;
1100         hLargest = hNormal + 250;
1101
1102         // height required to show track name
1103
1104         hSmall = 27;
1105 }
1106
1107 void
1108 TimeAxisView::show_name_label ()
1109 {
1110         if (!(name_packing & NameLabelPacked)) {
1111                 name_hbox.pack_start (name_label, true, true);
1112                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1113                 name_hbox.show ();
1114                 name_label.show ();
1115         }
1116 }
1117
1118 void
1119 TimeAxisView::show_name_entry ()
1120 {
1121         if (!(name_packing & NameEntryPacked)) {
1122                 name_hbox.pack_start (name_entry, true, true);
1123                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1124                 name_hbox.show ();
1125                 name_entry.show ();
1126         }
1127 }
1128
1129 void
1130 TimeAxisView::hide_name_label ()
1131 {
1132         if (name_packing & NameLabelPacked) {
1133                 name_hbox.remove (name_label);
1134                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1135         }
1136 }
1137
1138 void
1139 TimeAxisView::hide_name_entry ()
1140 {
1141         if (name_packing & NameEntryPacked) {
1142                 name_hbox.remove (name_entry);
1143                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1144         }
1145 }
1146
1147 void
1148 TimeAxisView::color_handler ()
1149 {
1150         for (list<GhostRegion*>::iterator i=ghosts.begin(); i != ghosts.end(); i++ ) {
1151                 (*i)->set_colors();
1152         }
1153
1154         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
1155
1156                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1157                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1158
1159                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1160                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1161
1162                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1163                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1164         }
1165
1166         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
1167
1168                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1169                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1170
1171                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1172                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1173
1174                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1175                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1176         }
1177 }
1178
1179 TimeAxisView*
1180 TimeAxisView::covers_y_position (double y)
1181 {
1182         if (hidden()) {
1183                 return 0;
1184         }
1185
1186         if (y_position <= y && y < (y_position + height)) {
1187                 return this;
1188         }
1189
1190         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1191                 TimeAxisView* tv;
1192
1193                 if ((tv = (*i)->covers_y_position (y)) != 0) {
1194                         return tv;
1195                 }
1196         }
1197
1198         return 0;
1199 }
1200
1201 void
1202 TimeAxisView::show_feature_lines (const AnalysisFeatureList& pos)
1203 {
1204         analysis_features = pos;
1205         reshow_feature_lines ();
1206 }
1207
1208
1209 void
1210 TimeAxisView::hide_feature_lines ()
1211 {
1212         list<ArdourCanvas::SimpleLine*>::iterator l;
1213
1214         for (l = feature_lines.begin(); l != feature_lines.end(); ++l) {
1215                 (*l)->hide();
1216         }
1217 }
1218
1219 void
1220 TimeAxisView::reshow_feature_lines ()
1221 {
1222         while (feature_lines.size()< analysis_features.size()) {
1223                 ArdourCanvas::SimpleLine* l = new ArdourCanvas::SimpleLine (*canvas_display);
1224                 l->property_color_rgba() = (guint) ARDOUR_UI::config()->canvasvar_ZeroLine.get();
1225                 feature_lines.push_back (l);
1226         }
1227
1228         while (feature_lines.size() > analysis_features.size()) {
1229                 ArdourCanvas::SimpleLine *line = feature_lines.back();
1230                 feature_lines.pop_back ();
1231                 delete line;
1232         }
1233
1234         AnalysisFeatureList::const_iterator i;
1235         list<ArdourCanvas::SimpleLine*>::iterator l;
1236
1237         for (i = analysis_features.begin(), l = feature_lines.begin(); i != analysis_features.end() && l != feature_lines.end(); ++i, ++l) {
1238                 (*l)->property_x1() = editor.frame_to_pixel (*i);
1239                 (*l)->property_x2() = editor.frame_to_pixel (*i);
1240                 (*l)->property_y1() = 0;
1241                 (*l)->property_y2() = current_height();
1242                 (*l)->show ();
1243         }
1244 }
1245
1246 bool
1247 TimeAxisView::resizer_button_press (GdkEventButton* event)
1248 {
1249         resize_drag_start = event->y_root;
1250         resize_idle_target = current_height();
1251         editor.start_resize_line_ops ();
1252         return true;
1253 }
1254
1255 bool
1256 TimeAxisView::resizer_button_release (GdkEventButton* ev)
1257 {
1258         resize_drag_start = -1;
1259         editor.end_resize_line_ops ();
1260         return true;
1261 }
1262
1263 void
1264 TimeAxisView::idle_resize (uint32_t h)
1265 {
1266         set_height (h);
1267 }
1268
1269 bool
1270 TimeAxisView::resizer_motion (GdkEventMotion* ev)
1271 {
1272         if (resize_drag_start < 0) {
1273                 return true;
1274         }
1275
1276         int32_t delta = (int32_t) floor (resize_drag_start - ev->y_root);
1277
1278         resize_idle_target = std::max (resize_idle_target - delta, (int) hSmall);
1279         editor.add_to_idle_resize (this, resize_idle_target);
1280
1281         resize_drag_start = ev->y_root;
1282
1283         return true;
1284 }
1285
1286 bool
1287 TimeAxisView::resizer_expose (GdkEventExpose* event)
1288 {
1289         int w, h, x, y, d;
1290         Glib::RefPtr<Gdk::Window> win (resizer.get_window());
1291         Glib::RefPtr<Gdk::GC> dark (resizer.get_style()->get_fg_gc (STATE_NORMAL));
1292         Glib::RefPtr<Gdk::GC> light (resizer.get_style()->get_bg_gc (STATE_NORMAL));
1293
1294         win->draw_rectangle (controls_ebox.get_style()->get_bg_gc(STATE_NORMAL),
1295                              true,
1296                              event->area.x,
1297                              event->area.y,
1298                              event->area.width,
1299                              event->area.height);
1300
1301         win->get_geometry (x, y, w, h, d);
1302
1303         /* handle/line #1 */
1304
1305         win->draw_line (dark, 0, 0, w - 2, 0);
1306         win->draw_point (dark, 0, 1);
1307         win->draw_line (light, 1, 1, w - 1, 1);
1308         win->draw_point (light, w - 1, 0);
1309
1310         /* handle/line #2 */
1311
1312         win->draw_line (dark, 0, 4, w - 2, 4);
1313         win->draw_point (dark, 0, 5);
1314         win->draw_line (light, 1, 5, w - 1, 5);
1315         win->draw_point (light, w - 1, 4);
1316
1317         /* handle/line #3 */
1318
1319         win->draw_line (dark, 0, 8, w - 2, 8);
1320         win->draw_point (dark, 0, 9);
1321         win->draw_line (light, 1, 9, w - 1, 9);
1322         win->draw_point (light, w - 1, 8);
1323
1324         return true;
1325 }
1326