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 #include "pbd/convert.h"
  32
  33 #include <gtkmm2ext/utils.h>
  34 #include <gtkmm2ext/selector.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 "global_signals.h"
  44 #include "gui_thread.h"
  45 #include "public_editor.h"
  46 #include "time_axis_view.h"
  47 #include "region_view.h"
  48 #include "ghostregion.h"
  49 #include "simplerect.h"
  50 #include "simpleline.h"
  51 #include "selection.h"
  52 #include "keyboard.h"
  53 #include "rgb_macros.h"
  54 #include "utils.h"
  55 #include "streamview.h"
  56 #include "editor_drag.h"
  57
  58 #include "i18n.h"
  59
  60 using namespace std;
  61 using namespace Gtk;
  62 using namespace Gdk;
  63 using namespace ARDOUR;
  64 using namespace PBD;
  65 using namespace Editing;
  66 using namespace ArdourCanvas;
  67 using Gtkmm2ext::Keyboard;
  68
  69 const double trim_handle_size = 6.0; /* pixels */
  70 uint32_t TimeAxisView::extra_height;
  71 uint32_t TimeAxisView::smaller_height;
  72 int const TimeAxisView::_max_order = 512;
  73 PBD::Signal1<void,TimeAxisView*> TimeAxisView::CatchDeletion;
  74
  75 TimeAxisView::TimeAxisView (ARDOUR::Session* sess, PublicEditor& ed, TimeAxisView* rent, Canvas& /*canvas*/)
  76         : AxisView (sess)
  77         , controls_table (2, 8)
  78         , _size_menu (0)
  79         , _y_position (0)
  80         , _editor (ed)
  81         , _order (0)
  82 {
  83         if (extra_height == 0) {
  84                 compute_heights ();
  85         }
  86
  87         _canvas_background = new Group (*ed.get_background_group (), 0.0, 0.0);
  88         _canvas_display = new Group (*ed.get_trackview_group (), 0.0, 0.0);
  89         _canvas_display->hide(); // reveal as needed
  90
  91         selection_group = new Group (*_canvas_display);
  92         selection_group->set_data (X_("timeselection"), (void *) 1);
  93         selection_group->hide();
  94
  95         _ghost_group = new Group (*_canvas_display);
  96         _ghost_group->lower_to_bottom();
  97         _ghost_group->show();
  98
  99         control_parent = 0;
 100         display_menu = 0;
 101         _hidden = false;
 102         in_destructor = false;
 103         height = 0;
 104         _effective_height = 0;
 105         parent = rent;
 106         _has_state = false;
 107         last_name_entry_key_press_event = 0;
 108         name_packing = NamePackingBits (0);
 109         _resize_drag_start = -1;
 110
 111         /*
 112           Create the standard LHS Controls
 113           We create the top-level container and name add the name label here,
 114           subclasses can add to the layout as required
 115         */
 116
 117         name_entry.set_name ("EditorTrackNameDisplay");
 118         name_entry.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_release));
 119         name_entry.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_press));
 120         name_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_release));
 121         name_entry.signal_activate().connect (sigc::mem_fun(*this, &TimeAxisView::name_entry_activated));
 122         name_entry.signal_focus_in_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 123         name_entry.signal_focus_out_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 124         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 125
 126         name_label.set_name ("TrackLabel");
 127         name_label.set_alignment (0.0, 0.5);
 128
 129         /* typically, either name_label OR name_entry are visible,
 130            but not both. its up to derived classes to show/hide them as they
 131            wish.
 132         */
 133
 134         name_hbox.show ();
 135
 136         controls_table.set_size_request (200);
 137         controls_table.set_border_width (2);
 138         controls_table.set_row_spacings (0);
 139         controls_table.set_col_spacings (0);
 140         controls_table.set_homogeneous (true);
 141
 142         controls_table.attach (name_hbox, 0, 5, 0, 1,  Gtk::FILL|Gtk::EXPAND,  Gtk::FILL|Gtk::EXPAND, 3, 0);
 143         controls_table.show_all ();
 144         controls_table.set_no_show_all ();
 145
 146         resizer.set_size_request (10, 6);
 147         resizer.set_name ("ResizeHandle");
 148         resizer.signal_expose_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_expose));
 149         resizer.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_press));
 150         resizer.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_release));
 151         resizer.signal_motion_notify_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_motion));
 152
 153         resizer.set_events (Gdk::BUTTON_PRESS_MASK|
 154                         Gdk::BUTTON_RELEASE_MASK|
 155                         Gdk::POINTER_MOTION_MASK|
 156                         Gdk::SCROLL_MASK);
 157
 158         resizer_box.pack_start (resizer, false, false);
 159         resizer.show ();
 160         resizer_box.show();
 161
 162         HSeparator* separator = manage (new HSeparator());
 163
 164         controls_vbox.pack_start (controls_table, false, false);
 165         controls_vbox.pack_end (resizer_box, false, false);
 166         controls_vbox.show ();
 167
 168         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 169         controls_ebox.add (controls_vbox);
 170         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 171         controls_ebox.set_flags (CAN_FOCUS);
 172
 173         controls_ebox.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 174         controls_ebox.signal_scroll_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 175
 176         controls_hbox.pack_start (controls_ebox, false, false);
 177         controls_hbox.show ();
 178
 179         time_axis_vbox.pack_start (controls_hbox, true, true);
 180         time_axis_vbox.pack_end (*separator, false, false);
 181         time_axis_vbox.show();
 182
 183         ColorsChanged.connect (sigc::mem_fun (*this, &TimeAxisView::color_handler));
 184
 185         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&TimeAxisView::erase_ghost, this, _1), gui_context());
 186 }
 187
 188 TimeAxisView::~TimeAxisView()
 189 {
 190         in_destructor = true;
 191
 192         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 193                 delete *i;
 194         }
 195
 196         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 197                 delete (*i)->rect;
 198                 delete (*i)->start_trim;
 199                 delete (*i)->end_trim;
 200
 201         }
 202
 203         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 204                 delete (*i)->rect;
 205                 delete (*i)->start_trim;
 206                 delete (*i)->end_trim;
 207         }
 208
 209         delete selection_group;
 210         selection_group = 0;
 211
 212         delete _canvas_background;
 213         _canvas_background = 0;
 214
 215         delete _canvas_display;
 216         _canvas_display = 0;
 217
 218         delete display_menu;
 219         display_menu = 0;
 220
 221         delete _size_menu;
 222 }
 223
 224 /** Display this TimeAxisView as the nth component of the parent box, at y.
 225 *
 226 * @param y y position.
 227 * @param nth index for this TimeAxisView, increased if this view has children.
 228 * @param parent parent component.
 229 * @return height of this TimeAxisView.
 230 */
 231 guint32
 232 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 233 {
 234         if (control_parent) {
 235                 control_parent->reorder_child (time_axis_vbox, nth);
 236         } else {
 237                 control_parent = parent;
 238                 parent->pack_start (time_axis_vbox, false, false);
 239                 parent->reorder_child (time_axis_vbox, nth);
 240         }
 241
 242         _order = nth;
 243
 244         if (_y_position != y) {
 245                 _canvas_display->property_y () = y;
 246                 _canvas_background->property_y () = y;
 247                 /* silly canvas */
 248                 _canvas_display->move (0.0, 0.0);
 249                 _canvas_background->move (0.0, 0.0);
 250                 _y_position = y;
 251
 252         }
 253
 254         _canvas_background->raise_to_top ();
 255         _canvas_display->raise_to_top ();
 256
 257         if (_marked_for_display) {
 258                 time_axis_vbox.show ();
 259                 controls_ebox.show ();
 260                 _canvas_background->show ();
 261         }
 262
 263         _hidden = false;
 264
 265         _effective_height = current_height ();
 266
 267         /* now show children */
 268
 269         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 270                 if (canvas_item_visible ((*i)->_canvas_display)) {
 271                         ++nth;
 272                         _effective_height += (*i)->show_at (y + _effective_height, nth, parent);
 273                 }
 274         }
 275
 276         return _effective_height;
 277 }
 278
 279 void
 280 TimeAxisView::clip_to_viewport ()
 281 {
 282         if (_marked_for_display) {
 283                 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()) {
 284                         _canvas_background->hide ();
 285                         _canvas_display->hide ();
 286                         return;
 287                 }
 288                 _canvas_background->show ();
 289                 _canvas_display->show ();
 290         }
 291         return;
 292 }
 293
 294 bool
 295 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 296 {
 297         if (Keyboard::some_magic_widget_has_focus()) {
 298                 return false;
 299         }
 300
 301         switch (ev->direction) {
 302         case GDK_SCROLL_UP:
 303                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 304                         step_height (false);
 305                         return true;
 306                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 307                         _editor.scroll_tracks_up_line();
 308                         return true;
 309                 }
 310                 break;
 311
 312         case GDK_SCROLL_DOWN:
 313                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 314                         step_height (true);
 315                         return true;
 316                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 317                         _editor.scroll_tracks_down_line();
 318                         return true;
 319                 }
 320                 break;
 321
 322         default:
 323                 /* no handling for left/right, yet */
 324                 break;
 325         }
 326
 327         return false;
 328 }
 329
 330 bool
 331 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 332 {
 333         switch (ev->button) {
 334         case 1:
 335                 selection_click (ev);
 336                 break;
 337
 338         case 3:
 339                 popup_display_menu (ev->time);
 340                 break;
 341         }
 342
 343         return true;
 344 }
 345
 346 void
 347 TimeAxisView::selection_click (GdkEventButton* ev)
 348 {
 349         Selection::Operation op = ArdourKeyboard::selection_type (ev->state);
 350         _editor.set_selected_track (*this, op, false);
 351 }
 352
 353 void
 354 TimeAxisView::hide ()
 355 {
 356         if (_hidden) {
 357                 return;
 358         }
 359
 360         _canvas_display->hide ();
 361         _canvas_background->hide ();
 362
 363         if (control_parent) {
 364                 control_parent->remove (time_axis_vbox);
 365                 control_parent = 0;
 366         }
 367
 368         _y_position = -1;
 369         _hidden = true;
 370
 371         /* now hide children */
 372
 373         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 374                 (*i)->hide ();
 375         }
 376
 377         /* if its hidden, it cannot be selected */
 378         _editor.get_selection().remove (this);
 379         /* and neither can its regions */
 380         _editor.get_selection().remove_regions (this);
 381
 382         Hiding ();
 383 }
 384
 385 /** Steps through the defined heights for this TrackView.
 386  *  @param coarser true if stepping should decrease in size, otherwise false.
 387  */
 388 void
 389 TimeAxisView::step_height (bool coarser)
 390 {
 391         static const uint32_t step = 25;
 392
 393         if (coarser) {
 394
 395                 if (height == preset_height (HeightSmall)) {
 396                         return;
 397                 }
 398
 399                 if (height <= preset_height (HeightSmaller) && height > preset_height (HeightSmall)) {
 400                         set_height_enum (HeightSmall);
 401                 } else if (height <= preset_height (HeightNormal) && height > preset_height (HeightSmaller)) {
 402                         set_height_enum (HeightSmaller);
 403                 } else {
 404                         set_height (height - step);
 405                 }
 406
 407         } else {
 408
 409                 if (height == preset_height(HeightSmall)) {
 410                         set_height_enum (HeightSmaller);
 411                 } else if (height == preset_height(HeightSmaller)) {
 412                         set_height_enum (HeightNormal);
 413                 } else {
 414                         set_height (height + step);
 415                 }
 416
 417         }
 418 }
 419
 420 void
 421 TimeAxisView::set_heights (uint32_t h)
 422 {
 423         TrackSelection& ts (_editor.get_selection().tracks);
 424
 425         for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
 426                 (*i)->set_height (h);
 427         }
 428 }
 429
 430 void
 431 TimeAxisView::set_height_enum (Height h, bool apply_to_selection)
 432 {
 433         if (apply_to_selection) {
 434                 _editor.get_selection().tracks.foreach_time_axis (boost::bind (&TimeAxisView::set_height_enum, _1, h, false));
 435         } else {
 436                 set_height (preset_height (h));
 437         }
 438 }
 439
 440 void
 441 TimeAxisView::set_height (uint32_t h)
 442 {
 443         if (h < preset_height (HeightSmall)) {
 444                 h = preset_height (HeightSmall);
 445         }
 446
 447         time_axis_vbox.property_height_request () = h;
 448         height = h;
 449
 450         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 451                 (*i)->set_height ();
 452         }
 453
 454         if (canvas_item_visible (selection_group)) {
 455                 /* resize the selection rect */
 456                 show_selection (_editor.get_selection().time);
 457         }
 458 }
 459
 460 bool
 461 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 462 {
 463         TrackViewList::iterator i;
 464
 465         switch (ev->keyval) {
 466         case GDK_Escape:
 467                 name_entry.select_region (0,0);
 468                 controls_ebox.grab_focus ();
 469                 name_entry_changed ();
 470                 return true;
 471
 472         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 473          * generates a different ev->keyval, rather than setting
 474          * ev->state.
 475          */
 476         case GDK_ISO_Left_Tab:
 477         case GDK_Tab:
 478         {
 479                 name_entry_changed ();
 480                 TrackViewList const & allviews = _editor.get_track_views ();
 481                 TrackViewList::const_iterator i = find (allviews.begin(), allviews.end(), this);
 482                 if (ev->keyval == GDK_Tab) {
 483                         if (i != allviews.end()) {
 484                                 do {
 485                                         if (++i == allviews.end()) {
 486                                                 return true;
 487                                         }
 488                                 } while((*i)->hidden());
 489                         }
 490                 } else {
 491                         if (i != allviews.begin()) {
 492                                 do {
 493                                         if (i == allviews.begin()) {
 494                                                 return true;
 495                                         }
 496                                         --i;
 497                                 } while ((*i)->hidden());
 498                         }
 499                 }
 500
 501
 502                 /* resize to show editable name display */
 503
 504                 if ((*i)->current_height() <= preset_height (HeightSmaller)) {
 505                         (*i)->set_height_enum (HeightSmaller);
 506                 }
 507
 508                 (*i)->name_entry.grab_focus();
 509         }
 510         return true;
 511
 512         case GDK_Up:
 513         case GDK_Down:
 514                 name_entry_changed ();
 515                 return true;
 516
 517         default:
 518                 break;
 519         }
 520
 521 #ifdef TIMEOUT_NAME_EDIT
 522         /* adapt the timeout to reflect the user's typing speed */
 523
 524         guint32 name_entry_timeout;
 525
 526         if (last_name_entry_key_press_event) {
 527                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 528                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 529         } else {
 530                 /* start with a 1 second timeout */
 531                 name_entry_timeout = 1000;
 532         }
 533
 534         last_name_entry_key_press_event = ev->time;
 535
 536         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 537
 538         name_entry_key_timeout.disconnect();
 539         name_entry_key_timeout = Glib::signal_timeout().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 540 #endif
 541
 542         return false;
 543 }
 544
 545 bool
 546 TimeAxisView::name_entry_focus_in (GdkEventFocus*)
 547 {
 548         name_entry.select_region (0, -1);
 549         name_entry.set_name ("EditorActiveTrackNameDisplay");
 550         return false;
 551 }
 552
 553 bool
 554 TimeAxisView::name_entry_focus_out (GdkEventFocus*)
 555 {
 556         /* clean up */
 557
 558         last_name_entry_key_press_event = 0;
 559         name_entry_key_timeout.disconnect ();
 560         name_entry.set_name ("EditorTrackNameDisplay");
 561         name_entry.select_region (0,0);
 562
 563         /* do the real stuff */
 564
 565         name_entry_changed ();
 566
 567         return false;
 568 }
 569
 570 bool
 571 TimeAxisView::name_entry_key_timed_out ()
 572 {
 573         name_entry_activated();
 574         return false;
 575 }
 576
 577 void
 578 TimeAxisView::name_entry_activated ()
 579 {
 580         controls_ebox.grab_focus();
 581 }
 582
 583 void
 584 TimeAxisView::name_entry_changed ()
 585 {
 586 }
 587
 588 bool
 589 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 590 {
 591         if (ev->button == 3) {
 592                 return true;
 593         }
 594         return false;
 595 }
 596
 597 bool
 598 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 599 {
 600         if (ev->button == 3) {
 601                 popup_display_menu (ev->time);
 602                 return true;
 603         }
 604         return false;
 605 }
 606
 607 void
 608 TimeAxisView::conditionally_add_to_selection ()
 609 {
 610         Selection& s (_editor.get_selection ());
 611
 612         if (!s.selected (this)) {
 613                 _editor.set_selected_track (*this, Selection::Set);
 614         }
 615 }
 616
 617 void
 618 TimeAxisView::popup_display_menu (guint32 when)
 619 {
 620         conditionally_add_to_selection ();
 621
 622         build_display_menu ();
 623         display_menu->popup (1, when);
 624 }
 625
 626 void
 627 TimeAxisView::set_selected (bool yn)
 628 {
 629         if (yn == _selected) {
 630                 return;
 631         }
 632
 633         Selectable::set_selected (yn);
 634
 635         if (_selected) {
 636                 controls_ebox.set_name (controls_base_selected_name);
 637                 time_axis_vbox.set_name (controls_base_selected_name);
 638                 controls_vbox.set_name (controls_base_selected_name);
 639         } else {
 640                 controls_ebox.set_name (controls_base_unselected_name);
 641                 time_axis_vbox.set_name (controls_base_unselected_name);
 642                 controls_vbox.set_name (controls_base_unselected_name);
 643                 hide_selection ();
 644
 645                 /* children will be set for the yn=true case. but when deselecting
 646                    the editor only has a list of top-level trackviews, so we
 647                    have to do this here.
 648                 */
 649
 650                 for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 651                         (*i)->set_selected (false);
 652                 }
 653         }
 654
 655         resizer.queue_draw ();
 656 }
 657
 658 void
 659 TimeAxisView::build_display_menu ()
 660 {
 661         using namespace Menu_Helpers;
 662
 663         delete display_menu;
 664
 665         display_menu = new Menu;
 666         display_menu->set_name ("ArdourContextMenu");
 667
 668         // Just let implementing classes define what goes into the manu
 669 }
 670
 671 void
 672 TimeAxisView::set_samples_per_unit (double spu)
 673 {
 674         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 675                 (*i)->set_samples_per_unit (spu);
 676         }
 677
 678         AnalysisFeatureList::const_iterator i;
 679         list<ArdourCanvas::SimpleLine*>::iterator l;
 680 }
 681
 682 void
 683 TimeAxisView::show_timestretch (framepos_t start, framepos_t end)
 684 {
 685         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 686                 (*i)->show_timestretch (start, end);
 687         }
 688 }
 689
 690 void
 691 TimeAxisView::hide_timestretch ()
 692 {
 693         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 694                 (*i)->hide_timestretch ();
 695         }
 696 }
 697
 698 void
 699 TimeAxisView::show_selection (TimeSelection& ts)
 700 {
 701         double x1;
 702         double x2;
 703         double y2;
 704         SelectionRect *rect;
 705
 706         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 707                 (*i)->show_selection (ts);
 708         }
 709
 710         if (canvas_item_visible (selection_group)) {
 711                 while (!used_selection_rects.empty()) {
 712                         free_selection_rects.push_front (used_selection_rects.front());
 713                         used_selection_rects.pop_front();
 714                         free_selection_rects.front()->rect->hide();
 715                         free_selection_rects.front()->start_trim->hide();
 716                         free_selection_rects.front()->end_trim->hide();
 717                 }
 718                 selection_group->hide();
 719         }
 720
 721         selection_group->show();
 722         selection_group->raise_to_top();
 723
 724         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 725                 framepos_t start, end;
 726                 framecnt_t cnt;
 727
 728                 start = (*i).start;
 729                 end = (*i).end;
 730                 cnt = end - start + 1;
 731
 732                 rect = get_selection_rect ((*i).id);
 733
 734                 x1 = _editor.frame_to_unit (start);
 735                 x2 = _editor.frame_to_unit (start + cnt - 1);
 736                 y2 = current_height();
 737
 738                 rect->rect->property_x1() = x1;
 739                 rect->rect->property_y1() = 1.0;
 740                 rect->rect->property_x2() = x2;
 741                 rect->rect->property_y2() = y2;
 742
 743                 // trim boxes are at the top for selections
 744
 745                 if (x2 > x1) {
 746                         rect->start_trim->property_x1() = x1;
 747                         rect->start_trim->property_y1() = 1.0;
 748                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 749                         rect->start_trim->property_y2() = y2;
 750
 751                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 752                         rect->end_trim->property_y1() = 1.0;
 753                         rect->end_trim->property_x2() = x2;
 754                         rect->end_trim->property_y2() = y2;
 755
 756                         rect->start_trim->show();
 757                         rect->end_trim->show();
 758                 } else {
 759                         rect->start_trim->hide();
 760                         rect->end_trim->hide();
 761                 }
 762
 763                 rect->rect->show ();
 764                 used_selection_rects.push_back (rect);
 765         }
 766 }
 767
 768 void
 769 TimeAxisView::reshow_selection (TimeSelection& ts)
 770 {
 771         show_selection (ts);
 772
 773         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 774                 (*i)->show_selection (ts);
 775         }
 776 }
 777
 778 void
 779 TimeAxisView::hide_selection ()
 780 {
 781         if (canvas_item_visible (selection_group)) {
 782                 while (!used_selection_rects.empty()) {
 783                         free_selection_rects.push_front (used_selection_rects.front());
 784                         used_selection_rects.pop_front();
 785                         free_selection_rects.front()->rect->hide();
 786                         free_selection_rects.front()->start_trim->hide();
 787                         free_selection_rects.front()->end_trim->hide();
 788                 }
 789                 selection_group->hide();
 790         }
 791
 792         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 793                 (*i)->hide_selection ();
 794         }
 795 }
 796
 797 void
 798 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 799 {
 800         /* find the selection rect this is for. we have the item corresponding to one
 801            of the trim handles.
 802          */
 803
 804         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 805                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 806
 807                         /* make one trim handle be "above" the other so that if they overlap,
 808                            the top one is the one last used.
 809                         */
 810
 811                         (*i)->rect->raise_to_top ();
 812                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 813                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 814
 815                         break;
 816                 }
 817         }
 818 }
 819
 820 SelectionRect *
 821 TimeAxisView::get_selection_rect (uint32_t id)
 822 {
 823         SelectionRect *rect;
 824
 825         /* check to see if we already have a visible rect for this particular selection ID */
 826
 827         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 828                 if ((*i)->id == id) {
 829                         return (*i);
 830                 }
 831         }
 832
 833         /* ditto for the free rect list */
 834
 835         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 836                 if ((*i)->id == id) {
 837                         SelectionRect* ret = (*i);
 838                         free_selection_rects.erase (i);
 839                         return ret;
 840                 }
 841         }
 842
 843         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 844
 845         if (free_selection_rects.empty()) {
 846
 847                 rect = new SelectionRect;
 848
 849                 rect->rect = new SimpleRect (*selection_group);
 850                 rect->rect->property_outline_what() = 0x0;
 851                 rect->rect->property_x1() = 0.0;
 852                 rect->rect->property_y1() = 0.0;
 853                 rect->rect->property_x2() = 0.0;
 854                 rect->rect->property_y2() = 0.0;
 855                 rect->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
 856
 857                 rect->start_trim = new SimpleRect (*selection_group);
 858                 rect->start_trim->property_outline_what() = 0x0;
 859                 rect->start_trim->property_x1() = 0.0;
 860                 rect->start_trim->property_x2() = 0.0;
 861
 862                 rect->end_trim = new SimpleRect (*selection_group);
 863                 rect->end_trim->property_outline_what() = 0x0;
 864                 rect->end_trim->property_x1() = 0.0;
 865                 rect->end_trim->property_x2() = 0.0;
 866
 867                 free_selection_rects.push_front (rect);
 868
 869                 rect->rect->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 870                 rect->start_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 871                 rect->end_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 872         }
 873
 874         rect = free_selection_rects.front();
 875         rect->id = id;
 876         free_selection_rects.pop_front();
 877         return rect;
 878 }
 879
 880 struct null_deleter { void operator()(void const *) const {} };
 881
 882 bool
 883 TimeAxisView::is_child (TimeAxisView* tav)
 884 {
 885         return find (children.begin(), children.end(), boost::shared_ptr<TimeAxisView>(tav, null_deleter())) != children.end();
 886 }
 887
 888 void
 889 TimeAxisView::add_child (boost::shared_ptr<TimeAxisView> child)
 890 {
 891         children.push_back (child);
 892 }
 893
 894 void
 895 TimeAxisView::remove_child (boost::shared_ptr<TimeAxisView> child)
 896 {
 897         Children::iterator i;
 898
 899         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 900                 children.erase (i);
 901         }
 902 }
 903
 904 /** Get selectable things within a given range.
 905  *  @param start Start time in session frames.
 906  *  @param end End time in session frames.
 907  *  @param top Top y range, in trackview coordinates (ie 0 is the top of the track view)
 908  *  @param bot Bottom y range, in trackview coordinates (ie 0 is the top of the track view)
 909  *  @param result Filled in with selectable things.
 910  */
 911 void
 912 TimeAxisView::get_selectables (framepos_t /*start*/, framepos_t /*end*/, double /*top*/, double /*bot*/, list<Selectable*>& /*result*/)
 913 {
 914         return;
 915 }
 916
 917 void
 918 TimeAxisView::get_inverted_selectables (Selection& /*sel*/, list<Selectable*>& /*result*/)
 919 {
 920         return;
 921 }
 922
 923 void
 924 TimeAxisView::add_ghost (RegionView* rv)
 925 {
 926         GhostRegion* gr = rv->add_ghost (*this);
 927
 928         if (gr) {
 929                 ghosts.push_back(gr);
 930         }
 931 }
 932
 933 void
 934 TimeAxisView::remove_ghost (RegionView* rv)
 935 {
 936         rv->remove_ghost_in (*this);
 937 }
 938
 939 void
 940 TimeAxisView::erase_ghost (GhostRegion* gr)
 941 {
 942         if (in_destructor) {
 943                 return;
 944         }
 945
 946         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 947                 if ((*i) == gr) {
 948                         ghosts.erase (i);
 949                         break;
 950                 }
 951         }
 952 }
 953
 954 bool
 955 TimeAxisView::touched (double top, double bot)
 956 {
 957         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 958           y_position is the "origin" or "top" of the track.
 959         */
 960
 961         double mybot = _y_position + current_height();
 962
 963         return ((_y_position <= bot && _y_position >= top) ||
 964                 ((mybot <= bot) && (top < mybot)) ||
 965                 (mybot >= bot && _y_position < top));
 966 }
 967
 968 void
 969 TimeAxisView::set_parent (TimeAxisView& p)
 970 {
 971         parent = &p;
 972 }
 973
 974 bool
 975 TimeAxisView::has_state () const
 976 {
 977         return _has_state;
 978 }
 979
 980 TimeAxisView*
 981 TimeAxisView::get_parent_with_state ()
 982 {
 983         if (parent == 0) {
 984                 return 0;
 985         }
 986
 987         if (parent->has_state()) {
 988                 return parent;
 989         }
 990
 991         return parent->get_parent_with_state ();
 992 }
 993
 994
 995 XMLNode&
 996 TimeAxisView::get_state ()
 997 {
 998         /* XXX: is this method used? */
 999
1000         XMLNode* node = new XMLNode ("TAV-" + name());
1001         char buf[32];
1002
1003         snprintf (buf, sizeof(buf), "%u", height);
1004         node->add_property ("height", buf);
1005         node->add_property ("marked-for-display", (_marked_for_display ? "1" : "0"));
1006         return *node;
1007 }
1008
1009 int
1010 TimeAxisView::set_state (const XMLNode& node, int /*version*/)
1011 {
1012         const XMLProperty *prop;
1013
1014         /* XXX: I think this might be vestigial */
1015         if ((prop = node.property ("marked-for-display")) != 0) {
1016                 _marked_for_display = (prop->value() == "1");
1017         }
1018
1019         if ((prop = node.property ("shown-editor")) != 0) {
1020                 _marked_for_display = string_is_affirmative (prop->value ());
1021         }
1022
1023         if ((prop = node.property ("track-height")) != 0) {
1024
1025                 if (prop->value() == "largest") {
1026                         set_height_enum (HeightLargest);
1027                 } else if (prop->value() == "large") {
1028                         set_height_enum (HeightLarge);
1029                 } else if (prop->value() == "larger") {
1030                         set_height_enum (HeightLarger);
1031                 } else if (prop->value() == "normal") {
1032                         set_height_enum (HeightNormal);
1033                 } else if (prop->value() == "smaller") {
1034                         set_height_enum (HeightSmaller);
1035                 } else if (prop->value() == "small") {
1036                         set_height_enum (HeightSmall);
1037                 } else {
1038                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
1039                         set_height_enum (HeightNormal);
1040                 }
1041
1042         } else if ((prop = node.property ("height")) != 0) {
1043
1044                 set_height (atoi (prop->value()));
1045
1046         } else {
1047
1048                 set_height_enum (HeightNormal);
1049         }
1050
1051         return 0;
1052 }
1053
1054 void
1055 TimeAxisView::reset_height ()
1056 {
1057         set_height (height);
1058
1059         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1060                 (*i)->set_height ((*i)->height);
1061         }
1062 }
1063
1064 void
1065 TimeAxisView::compute_heights ()
1066 {
1067         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
1068         Gtk::Table two_row_table (2, 8);
1069         Gtk::Table one_row_table (1, 8);
1070         Button* buttons[5];
1071         const int border_width = 2;
1072         extra_height = (2 * border_width)
1073                 //+ 2   // 2 pixels for the hseparator between TimeAxisView control areas
1074                 + 6; // resizer button (3 x 2 pixel elements + 2 x 2 pixel gaps)
1075
1076         window.add (one_row_table);
1077
1078         one_row_table.set_border_width (border_width);
1079         one_row_table.set_row_spacings (0);
1080         one_row_table.set_col_spacings (0);
1081         one_row_table.set_homogeneous (true);
1082
1083         two_row_table.set_border_width (border_width);
1084         two_row_table.set_row_spacings (0);
1085         two_row_table.set_col_spacings (0);
1086         two_row_table.set_homogeneous (true);
1087
1088         for (int i = 0; i < 5; ++i) {
1089                 buttons[i] = manage (new Button (X_("f")));
1090                 buttons[i]->set_name ("TrackMuteButton");
1091         }
1092
1093         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1094
1095         one_row_table.show_all ();
1096         Gtk::Requisition req(one_row_table.size_request ());
1097
1098         // height required to show 1 row of buttons
1099
1100         smaller_height = req.height + extra_height;
1101 }
1102
1103 void
1104 TimeAxisView::show_name_label ()
1105 {
1106         if (!(name_packing & NameLabelPacked)) {
1107                 name_hbox.pack_start (name_label, true, true);
1108                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1109                 name_hbox.show ();
1110                 name_label.show ();
1111         }
1112 }
1113
1114 void
1115 TimeAxisView::show_name_entry ()
1116 {
1117         if (!(name_packing & NameEntryPacked)) {
1118                 name_hbox.pack_start (name_entry, true, true);
1119                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1120                 name_hbox.show ();
1121                 name_entry.show ();
1122         }
1123 }
1124
1125 void
1126 TimeAxisView::hide_name_label ()
1127 {
1128         if (name_packing & NameLabelPacked) {
1129                 name_hbox.remove (name_label);
1130                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1131         }
1132 }
1133
1134 void
1135 TimeAxisView::hide_name_entry ()
1136 {
1137         if (name_packing & NameEntryPacked) {
1138                 name_hbox.remove (name_entry);
1139                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1140         }
1141 }
1142
1143 void
1144 TimeAxisView::color_handler ()
1145 {
1146         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); i++) {
1147                 (*i)->set_colors();
1148         }
1149
1150         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
1151
1152                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1153                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1154
1155                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1156                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1157
1158                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1159                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1160         }
1161
1162         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
1163
1164                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1165                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1166
1167                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1168                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1169
1170                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1171                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1172         }
1173 }
1174
1175 /** @return Pair: TimeAxisView, layer index.
1176  * TimeAxisView is non-0 if this object covers y, or one of its children does.
1177  * If the covering object is a child axis, then the child is returned.
1178  * TimeAxisView is 0 otherwise.
1179  * Layer index is the layer number if the TimeAxisView is valid and is in stacked
1180  * region display mode, otherwise 0.
1181  */
1182 std::pair<TimeAxisView*, layer_t>
1183 TimeAxisView::covers_y_position (double y)
1184 {
1185         if (hidden()) {
1186                 return std::make_pair ((TimeAxisView *) 0, 0);
1187         }
1188
1189         if (_y_position <= y && y < (_y_position + height)) {
1190
1191                 /* work out the layer index if appropriate */
1192                 layer_t l = 0;
1193                 if (layer_display () == Stacked && view ()) {
1194                         /* compute layer */
1195                         l = layer_t ((_y_position + height - y) / (view()->child_height ()));
1196                         /* clamp to max layers to be on the safe side; sometimes the above calculation
1197                           returns a too-high value */
1198                         if (l >= view()->layers ()) {
1199                                 l = view()->layers() - 1;
1200                         }
1201                 }
1202
1203                 return std::make_pair (this, l);
1204         }
1205
1206         for (Children::const_iterator i = children.begin(); i != children.end(); ++i) {
1207
1208                 std::pair<TimeAxisView*, int> const r = (*i)->covers_y_position (y);
1209                 if (r.first) {
1210                         return r;
1211                 }
1212         }
1213
1214         return std::make_pair ((TimeAxisView *) 0, 0);
1215 }
1216
1217 bool
1218 TimeAxisView::resizer_button_press (GdkEventButton* event)
1219 {
1220         _resize_drag_start = event->y_root;
1221         return true;
1222 }
1223
1224 bool
1225 TimeAxisView::resizer_button_release (GdkEventButton*)
1226 {
1227         _editor.stop_canvas_autoscroll ();
1228         _resize_drag_start = -1;
1229         return true;
1230 }
1231
1232 void
1233 TimeAxisView::idle_resize (uint32_t h)
1234 {
1235         set_height (h);
1236 }
1237
1238 bool
1239 TimeAxisView::resizer_motion (GdkEventMotion* ev)
1240 {
1241         if (_resize_drag_start >= 0) {
1242                 /* (ab)use the DragManager to do autoscrolling; adjust the event coordinates
1243                    into the world coordinate space that DragManager::motion_handler is expecting,
1244                    and then fake a DragManager motion event so that when maybe_autoscroll
1245                    asks DragManager for the current pointer position it will get the correct
1246                    answers.
1247                 */
1248                 int tx, ty;
1249                 resizer.translate_coordinates (*control_parent, ev->x, ev->y, tx, ty);
1250                 ev->y = ty - _editor.get_trackview_group_vertical_offset();
1251                 _editor.drags()->motion_handler ((GdkEvent *) ev, false);
1252                 _editor.maybe_autoscroll (false, true);
1253
1254                 /* now do the actual TAV resize */
1255                 int32_t const delta = (int32_t) floor (ev->y_root - _resize_drag_start);
1256                 _editor.add_to_idle_resize (this, delta);
1257                 _resize_drag_start = ev->y_root;
1258         }
1259
1260         return true;
1261 }
1262
1263 bool
1264 TimeAxisView::resizer_expose (GdkEventExpose* event)
1265 {
1266         int w, h, x, y, d;
1267         Glib::RefPtr<Gdk::Window> win (resizer.get_window());
1268         Glib::RefPtr<Gdk::GC> dark (resizer.get_style()->get_fg_gc (STATE_NORMAL));
1269         Glib::RefPtr<Gdk::GC> light (resizer.get_style()->get_bg_gc (STATE_NORMAL));
1270
1271         win->draw_rectangle (controls_ebox.get_style()->get_bg_gc(STATE_NORMAL),
1272                         true,
1273                         event->area.x,
1274                         event->area.y,
1275                         event->area.width,
1276                         event->area.height);
1277
1278         win->get_geometry (x, y, w, h, d);
1279
1280         /* handle/line #1 */
1281
1282         win->draw_line (dark, 0, 0, w - 2, 0);
1283         win->draw_point (dark, 0, 1);
1284         win->draw_line (light, 1, 1, w - 1, 1);
1285         win->draw_point (light, w - 1, 0);
1286
1287         /* handle/line #2 */
1288
1289         win->draw_line (dark, 0, 4, w - 2, 4);
1290         win->draw_point (dark, 0, 5);
1291         win->draw_line (light, 1, 5, w - 1, 5);
1292         win->draw_point (light, w - 1, 4);
1293
1294         /* use vertical resize mouse cursor */
1295         win->set_cursor(Gdk::Cursor(Gdk::SB_V_DOUBLE_ARROW));
1296
1297         return true;
1298 }
1299
1300 bool
1301 TimeAxisView::set_visibility (bool yn)
1302 {
1303         if (yn != marked_for_display()) {
1304                 if (yn) {
1305                         set_marked_for_display (true);
1306                         canvas_display()->show();
1307                 } else {
1308                         set_marked_for_display (false);
1309                         hide ();
1310                 }
1311                 return true; // things changed
1312         }
1313
1314         return false;
1315 }
1316
1317 uint32_t
1318 TimeAxisView::preset_height (Height h)
1319 {
1320         switch (h) {
1321         case HeightLargest:
1322                 return extra_height + 48 + 250;
1323         case HeightLarger:
1324                 return extra_height + 48 + 150;
1325         case HeightLarge:
1326                 return extra_height + 48 + 50;
1327         case HeightNormal:
1328                 return extra_height + 48;
1329         case HeightSmall:
1330                 return 27;
1331         case HeightSmaller:
1332                 return smaller_height;
1333         }
1334
1335         /* NOTREACHED */
1336         return 0;
1337 }
1338
1339 /** @return Child time axis views that are not hidden */
1340 TimeAxisView::Children
1341 TimeAxisView::get_child_list ()
1342 {
1343         Children c;
1344
1345         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1346                 if (!(*i)->hidden()) {
1347                         c.push_back(*i);
1348                 }
1349         }
1350
1351         return c;
1352 }
1353
1354 void
1355 TimeAxisView::build_size_menu ()
1356 {
1357         if (_size_menu && _size_menu->gobj ()) {
1358                 return;
1359         }
1360
1361         delete _size_menu;
1362
1363         using namespace Menu_Helpers;
1364
1365         _size_menu = new Menu;
1366         _size_menu->set_name ("ArdourContextMenu");
1367         MenuList& items = _size_menu->items();
1368
1369         items.push_back (MenuElem (_("Largest"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightLargest, true)));
1370         items.push_back (MenuElem (_("Larger"),  sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightLarger, true)));
1371         items.push_back (MenuElem (_("Large"),   sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightLarge, true)));
1372         items.push_back (MenuElem (_("Normal"),  sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightNormal, true)));
1373         items.push_back (MenuElem (_("Smaller"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightSmaller, true)));
1374         items.push_back (MenuElem (_("Small"),   sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightSmall, true)));
1375 }