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 #include <gtkmm2ext/stop_signal.h>
  36
  37 #include "ardour/session.h"
  38 #include "ardour/utils.h"
  39 #include "ardour/ladspa_plugin.h"
  40 #include "ardour/processor.h"
  41 #include "ardour/location.h"
  42
  43 #include "ardour_ui.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
  57 #include "i18n.h"
  58
  59 using namespace std;
  60 using namespace Gtk;
  61 using namespace Gdk;
  62 using namespace ARDOUR;
  63 using namespace PBD;
  64 using namespace Editing;
  65 using namespace ArdourCanvas;
  66 using Gtkmm2ext::Keyboard;
  67
  68 const double trim_handle_size = 6.0; /* pixels */
  69 uint32_t TimeAxisView::extra_height;
  70 uint32_t TimeAxisView::smaller_height;
  71 int const TimeAxisView::_max_order = 512;
  72 PBD::Signal1<void,TimeAxisView*> TimeAxisView::CatchDeletion;
  73
  74 TimeAxisView::TimeAxisView (ARDOUR::Session* sess, PublicEditor& ed, TimeAxisView* rent, Canvas& /*canvas*/)
  75         : AxisView (sess),
  76           controls_table (2, 8),
  77           _y_position (0),
  78           _editor (ed),
  79           _order (0)
  80 {
  81         if (extra_height == 0) {
  82                 compute_heights ();
  83         }
  84
  85         _canvas_background = new Group (*ed.get_background_group (), 0.0, 0.0);
  86         _canvas_display = new Group (*ed.get_trackview_group (), 0.0, 0.0);
  87         _canvas_display->hide(); // reveal as needed
  88
  89         selection_group = new Group (*_canvas_display);
  90         selection_group->hide();
  91
  92         _ghost_group = new Group (*_canvas_display);
  93         _ghost_group->lower_to_bottom();
  94         _ghost_group->show();
  95
  96         control_parent = 0;
  97         display_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 (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_release));
 116         name_entry.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_press));
 117         name_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_release));
 118         name_entry.signal_activate().connect (sigc::mem_fun(*this, &TimeAxisView::name_entry_activated));
 119         name_entry.signal_focus_in_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 120         name_entry.signal_focus_out_event().connect (sigc::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_size_request (200);
 134         controls_table.set_border_width (2);
 135         controls_table.set_row_spacings (0);
 136         controls_table.set_col_spacings (0);
 137         controls_table.set_homogeneous (true);
 138
 139         controls_table.attach (name_hbox, 0, 5, 0, 1,  Gtk::FILL|Gtk::EXPAND,  Gtk::FILL|Gtk::EXPAND, 3, 0);
 140         controls_table.show_all ();
 141         controls_table.set_no_show_all ();
 142
 143         resizer.set_size_request (10, 6);
 144         resizer.set_name ("ResizeHandle");
 145         resizer.signal_expose_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_expose));
 146         resizer.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_press));
 147         resizer.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_release));
 148         resizer.signal_motion_notify_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_motion));
 149
 150         resizer.set_events (Gdk::BUTTON_PRESS_MASK|
 151                         Gdk::BUTTON_RELEASE_MASK|
 152                         Gdk::POINTER_MOTION_MASK|
 153                         Gdk::SCROLL_MASK);
 154
 155         resizer_box.pack_start (resizer, false, false);
 156         resizer.show ();
 157         resizer_box.show();
 158
 159         HSeparator* separator = manage (new HSeparator());
 160
 161         controls_vbox.pack_start (controls_table, false, false);
 162         controls_vbox.pack_end (resizer_box, false, false);
 163         controls_vbox.show ();
 164
 165         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 166         controls_ebox.add (controls_vbox);
 167         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 168         controls_ebox.set_flags (CAN_FOCUS);
 169
 170         controls_ebox.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 171         controls_ebox.signal_scroll_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 172
 173         controls_hbox.pack_start (controls_ebox, false, false);
 174         controls_hbox.show ();
 175
 176         time_axis_vbox.pack_start (controls_hbox, true, true);
 177         time_axis_vbox.pack_end (*separator, false, false);
 178         time_axis_vbox.show();
 179
 180         ColorsChanged.connect (sigc::mem_fun (*this, &TimeAxisView::color_handler));
 181
 182         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&TimeAxisView::erase_ghost, this, _1), gui_context());
 183 }
 184
 185 TimeAxisView::~TimeAxisView()
 186 {
 187         in_destructor = true;
 188
 189         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 190                 delete *i;
 191         }
 192
 193         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 194                 delete (*i)->rect;
 195                 delete (*i)->start_trim;
 196                 delete (*i)->end_trim;
 197
 198         }
 199
 200         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 201                 delete (*i)->rect;
 202                 delete (*i)->start_trim;
 203                 delete (*i)->end_trim;
 204         }
 205
 206         for (list<SimpleLine*>::iterator i = feature_lines.begin(); i != feature_lines.end(); ++i) {
 207                 delete (*i);
 208         }
 209
 210         delete selection_group;
 211         selection_group = 0;
 212
 213         delete _canvas_background;
 214         _canvas_background = 0;
 215
 216         delete _canvas_display;
 217         _canvas_display = 0;
 218
 219         delete display_menu;
 220         display_menu = 0;
 221 }
 222
 223 /** Display this TimeAxisView as the nth component of the parent box, at y.
 224 *
 225 * @param y y position.
 226 * @param nth index for this TimeAxisView, increased if this view has children.
 227 * @param parent parent component.
 228 * @return height of this TimeAxisView.
 229 */
 230 guint32
 231 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 232 {
 233         if (control_parent) {
 234                 control_parent->reorder_child (time_axis_vbox, nth);
 235         } else {
 236                 control_parent = parent;
 237                 parent->pack_start (time_axis_vbox, false, false);
 238                 parent->reorder_child (time_axis_vbox, nth);
 239         }
 240
 241         _order = nth;
 242
 243         if (_y_position != y) {
 244                 _canvas_display->property_y () = y;
 245                 _canvas_background->property_y () = y;
 246                 /* silly canvas */
 247                 _canvas_display->move (0.0, 0.0);
 248                 _canvas_background->move (0.0, 0.0);
 249                 _y_position = y;
 250
 251         }
 252
 253         _canvas_background->raise_to_top ();
 254         _canvas_display->raise_to_top ();
 255
 256         if (_marked_for_display) {
 257                 time_axis_vbox.show ();
 258                 controls_ebox.show ();
 259                 _canvas_background->show ();
 260         }
 261
 262         _hidden = false;
 263
 264         _effective_height = current_height ();
 265
 266         /* now show children */
 267
 268         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 269                 if (canvas_item_visible ((*i)->_canvas_display)) {
 270                         ++nth;
 271                         _effective_height += (*i)->show_at (y + _effective_height, nth, parent);
 272                 }
 273         }
 274
 275         return _effective_height;
 276 }
 277
 278 void
 279 TimeAxisView::clip_to_viewport ()
 280 {
 281         if (_marked_for_display) {
 282                 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()) {
 283                         _canvas_background->hide ();
 284                         _canvas_display->hide ();
 285                         return;
 286                 }
 287                 _canvas_background->show ();
 288                 _canvas_display->show ();
 289         }
 290         return;
 291 }
 292
 293 bool
 294 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 295 {
 296         if (Keyboard::some_magic_widget_has_focus()) {
 297                 return false;
 298         }
 299
 300         switch (ev->direction) {
 301         case GDK_SCROLL_UP:
 302                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 303                         step_height (true);
 304                         return true;
 305                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 306                         _editor.scroll_tracks_up_line();
 307                         return true;
 308                 }
 309                 break;
 310
 311         case GDK_SCROLL_DOWN:
 312                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 313                         step_height (false);
 314                         return true;
 315                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 316                         _editor.scroll_tracks_down_line();
 317                         return true;
 318                 }
 319                 break;
 320
 321         default:
 322                 /* no handling for left/right, yet */
 323                 break;
 324         }
 325
 326         return false;
 327 }
 328
 329 bool
 330 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 331 {
 332         switch (ev->button) {
 333         case 1:
 334                 selection_click (ev);
 335                 break;
 336
 337         case 3:
 338                 popup_display_menu (ev->time);
 339                 break;
 340         }
 341
 342         return true;
 343 }
 344
 345 void
 346 TimeAxisView::selection_click (GdkEventButton* ev)
 347 {
 348         Selection::Operation op = ArdourKeyboard::selection_type (ev->state);
 349         _editor.set_selected_track (*this, op, false);
 350 }
 351
 352 void
 353 TimeAxisView::hide ()
 354 {
 355         if (_hidden) {
 356                 return;
 357         }
 358
 359         _canvas_display->hide ();
 360         _canvas_background->hide ();
 361
 362         if (control_parent) {
 363                 control_parent->remove (time_axis_vbox);
 364                 control_parent = 0;
 365         }
 366
 367         _y_position = -1;
 368         _hidden = true;
 369
 370         /* now hide children */
 371
 372         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 373                 (*i)->hide ();
 374         }
 375
 376         /* if its hidden, it cannot be selected */
 377
 378         _editor.get_selection().remove (this);
 379
 380         Hiding ();
 381 }
 382
 383 void
 384 TimeAxisView::step_height (bool bigger)
 385 {
 386         static const uint32_t step = 20;
 387
 388         if (bigger) {
 389                 set_height (height + step);
 390         } else {
 391                 if (height > step) {
 392                         set_height (std::max (height - step, preset_height (HeightSmall)));
 393                 } else if (height != preset_height (HeightSmall)) {
 394                         set_height (HeightSmall);
 395                 }
 396         }
 397 }
 398
 399 void
 400 TimeAxisView::set_heights (uint32_t h)
 401 {
 402         TrackSelection& ts (_editor.get_selection().tracks);
 403
 404         for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
 405                 (*i)->set_height (h);
 406         }
 407 }
 408
 409 void
 410 TimeAxisView::set_height (Height h)
 411 {
 412         set_height (preset_height (h));
 413 }
 414
 415 void
 416 TimeAxisView::set_height(uint32_t h)
 417 {
 418         time_axis_vbox.property_height_request () = h;
 419         height = h;
 420
 421         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 422                 (*i)->set_height ();
 423         }
 424
 425         if (canvas_item_visible (selection_group)) {
 426                 /* resize the selection rect */
 427                 show_selection (_editor.get_selection().time);
 428         }
 429
 430         reshow_feature_lines ();
 431 }
 432
 433 bool
 434 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 435 {
 436         TrackViewList::iterator i;
 437
 438         switch (ev->keyval) {
 439         case GDK_Escape:
 440                 name_entry.select_region (0,0);
 441                 controls_ebox.grab_focus ();
 442                 name_entry_changed ();
 443                 return true;
 444
 445         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 446          * generates a different ev->keyval, rather than setting
 447          * ev->state.
 448          */
 449         case GDK_ISO_Left_Tab:
 450         case GDK_Tab:
 451         {
 452                 name_entry_changed ();
 453                 TrackViewList const & allviews = _editor.get_track_views ();
 454                 TrackViewList::const_iterator i = find (allviews.begin(), allviews.end(), this);
 455                 if (ev->keyval == GDK_Tab) {
 456                         if (i != allviews.end()) {
 457                                 do {
 458                                         if (++i == allviews.end()) {
 459                                                 return true;
 460                                         }
 461                                 } while((*i)->hidden());
 462                         }
 463                 } else {
 464                         if (i != allviews.begin()) {
 465                                 do {
 466                                         if (i == allviews.begin()) {
 467                                                 return true;
 468                                         }
 469                                         --i;
 470                                 } while ((*i)->hidden());
 471                         }
 472                 }
 473
 474
 475                 /* resize to show editable name display */
 476
 477                 if ((*i)->current_height() <= preset_height (HeightSmaller)) {
 478                         (*i)->set_height (HeightSmaller);
 479                 }
 480
 481                 (*i)->name_entry.grab_focus();
 482         }
 483         return true;
 484
 485         case GDK_Up:
 486         case GDK_Down:
 487                 name_entry_changed ();
 488                 return true;
 489
 490         default:
 491                 break;
 492         }
 493
 494 #ifdef TIMEOUT_NAME_EDIT
 495         /* adapt the timeout to reflect the user's typing speed */
 496
 497         guint32 name_entry_timeout;
 498
 499         if (last_name_entry_key_press_event) {
 500                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 501                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 502         } else {
 503                 /* start with a 1 second timeout */
 504                 name_entry_timeout = 1000;
 505         }
 506
 507         last_name_entry_key_press_event = ev->time;
 508
 509         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 510
 511         name_entry_key_timeout.disconnect();
 512         name_entry_key_timeout = Glib::signal_timeout().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 513 #endif
 514
 515         return false;
 516 }
 517
 518 bool
 519 TimeAxisView::name_entry_focus_in (GdkEventFocus*)
 520 {
 521         name_entry.select_region (0, -1);
 522         name_entry.set_name ("EditorActiveTrackNameDisplay");
 523         return false;
 524 }
 525
 526 bool
 527 TimeAxisView::name_entry_focus_out (GdkEventFocus*)
 528 {
 529         /* clean up */
 530
 531         last_name_entry_key_press_event = 0;
 532         name_entry_key_timeout.disconnect ();
 533         name_entry.set_name ("EditorTrackNameDisplay");
 534         name_entry.select_region (0,0);
 535
 536         /* do the real stuff */
 537
 538         name_entry_changed ();
 539
 540         return false;
 541 }
 542
 543 bool
 544 TimeAxisView::name_entry_key_timed_out ()
 545 {
 546         name_entry_activated();
 547         return false;
 548 }
 549
 550 void
 551 TimeAxisView::name_entry_activated ()
 552 {
 553         controls_ebox.grab_focus();
 554 }
 555
 556 void
 557 TimeAxisView::name_entry_changed ()
 558 {
 559 }
 560
 561 bool
 562 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 563 {
 564         if (ev->button == 3) {
 565                 return true;
 566         }
 567         return false;
 568 }
 569
 570 bool
 571 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 572 {
 573         if (ev->button == 3) {
 574                 popup_display_menu (ev->time);
 575                 return true;
 576         }
 577         return false;
 578 }
 579
 580 void
 581 TimeAxisView::conditionally_add_to_selection ()
 582 {
 583         Selection& s (_editor.get_selection ());
 584
 585         if (!s.selected (this)) {
 586                 _editor.set_selected_track (*this, Selection::Set);
 587         }
 588 }
 589
 590 void
 591 TimeAxisView::popup_display_menu (guint32 when)
 592 {
 593         if (display_menu == 0) {
 594                 build_display_menu ();
 595         }
 596
 597         conditionally_add_to_selection ();
 598         display_menu->popup (1, when);
 599 }
 600
 601 void
 602 TimeAxisView::set_selected (bool yn)
 603 {
 604         if (yn == _selected) {
 605                 return;
 606         }
 607
 608         Selectable::set_selected (yn);
 609
 610         if (_selected) {
 611                 controls_ebox.set_name (controls_base_selected_name);
 612                 time_axis_vbox.set_name (controls_base_selected_name);
 613                 controls_vbox.set_name (controls_base_selected_name);
 614         } else {
 615                 controls_ebox.set_name (controls_base_unselected_name);
 616                 time_axis_vbox.set_name (controls_base_unselected_name);
 617                 controls_vbox.set_name (controls_base_unselected_name);
 618                 hide_selection ();
 619
 620                 /* children will be set for the yn=true case. but when deselecting
 621                    the editor only has a list of top-level trackviews, so we
 622                    have to do this here.
 623                 */
 624
 625                 for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 626                         (*i)->set_selected (false);
 627                 }
 628         }
 629
 630         resizer.queue_draw ();
 631 }
 632
 633 void
 634 TimeAxisView::build_display_menu ()
 635 {
 636         using namespace Menu_Helpers;
 637
 638         delete display_menu;
 639
 640         display_menu = new Menu;
 641         display_menu->set_name ("ArdourContextMenu");
 642
 643         // Just let implementing classes define what goes into the manu
 644 }
 645
 646 void
 647 TimeAxisView::set_samples_per_unit (double spu)
 648 {
 649         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 650                 (*i)->set_samples_per_unit (spu);
 651         }
 652
 653         AnalysisFeatureList::const_iterator i;
 654         list<ArdourCanvas::SimpleLine*>::iterator l;
 655
 656         for (i = analysis_features.begin(), l = feature_lines.begin(); i != analysis_features.end() && l != feature_lines.end(); ++i, ++l) {
 657                 (*l)->property_x1() = _editor.frame_to_pixel (*i);
 658                 (*l)->property_x2() = _editor.frame_to_pixel (*i);
 659         }
 660 }
 661
 662 void
 663 TimeAxisView::show_timestretch (nframes_t start, nframes_t end)
 664 {
 665         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 666                 (*i)->show_timestretch (start, end);
 667         }
 668 }
 669
 670 void
 671 TimeAxisView::hide_timestretch ()
 672 {
 673         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 674                 (*i)->hide_timestretch ();
 675         }
 676 }
 677
 678 void
 679 TimeAxisView::show_selection (TimeSelection& ts)
 680 {
 681         double x1;
 682         double x2;
 683         double y2;
 684         SelectionRect *rect;
 685
 686         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 687                 (*i)->show_selection (ts);
 688         }
 689
 690         if (canvas_item_visible (selection_group)) {
 691                 while (!used_selection_rects.empty()) {
 692                         free_selection_rects.push_front (used_selection_rects.front());
 693                         used_selection_rects.pop_front();
 694                         free_selection_rects.front()->rect->hide();
 695                         free_selection_rects.front()->start_trim->hide();
 696                         free_selection_rects.front()->end_trim->hide();
 697                 }
 698                 selection_group->hide();
 699         }
 700
 701         selection_group->show();
 702         selection_group->raise_to_top();
 703
 704         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 705                 nframes_t start, end, cnt;
 706
 707                 start = (*i).start;
 708                 end = (*i).end;
 709                 cnt = end - start + 1;
 710
 711                 rect = get_selection_rect ((*i).id);
 712
 713                 x1 = _editor.frame_to_unit (start);
 714                 x2 = _editor.frame_to_unit (start + cnt - 1);
 715                 y2 = current_height();
 716
 717                 rect->rect->property_x1() = x1;
 718                 rect->rect->property_y1() = 1.0;
 719                 rect->rect->property_x2() = x2;
 720                 rect->rect->property_y2() = y2;
 721
 722                 // trim boxes are at the top for selections
 723
 724                 if (x2 > x1) {
 725                         rect->start_trim->property_x1() = x1;
 726                         rect->start_trim->property_y1() = 1.0;
 727                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 728                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 729
 730                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 731                         rect->end_trim->property_y1() = 1.0;
 732                         rect->end_trim->property_x2() = x2;
 733                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 734
 735                         rect->start_trim->show();
 736                         rect->end_trim->show();
 737                 } else {
 738                         rect->start_trim->hide();
 739                         rect->end_trim->hide();
 740                 }
 741
 742                 rect->rect->show ();
 743                 used_selection_rects.push_back (rect);
 744         }
 745 }
 746
 747 void
 748 TimeAxisView::reshow_selection (TimeSelection& ts)
 749 {
 750         show_selection (ts);
 751
 752         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 753                 (*i)->show_selection (ts);
 754         }
 755 }
 756
 757 void
 758 TimeAxisView::hide_selection ()
 759 {
 760         if (canvas_item_visible (selection_group)) {
 761                 while (!used_selection_rects.empty()) {
 762                         free_selection_rects.push_front (used_selection_rects.front());
 763                         used_selection_rects.pop_front();
 764                         free_selection_rects.front()->rect->hide();
 765                         free_selection_rects.front()->start_trim->hide();
 766                         free_selection_rects.front()->end_trim->hide();
 767                 }
 768                 selection_group->hide();
 769         }
 770
 771         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 772                 (*i)->hide_selection ();
 773         }
 774 }
 775
 776 void
 777 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 778 {
 779         /* find the selection rect this is for. we have the item corresponding to one
 780            of the trim handles.
 781          */
 782
 783         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 784                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 785
 786                         /* make one trim handle be "above" the other so that if they overlap,
 787                            the top one is the one last used.
 788                         */
 789
 790                         (*i)->rect->raise_to_top ();
 791                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 792                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 793
 794                         break;
 795                 }
 796         }
 797 }
 798
 799 SelectionRect *
 800 TimeAxisView::get_selection_rect (uint32_t id)
 801 {
 802         SelectionRect *rect;
 803
 804         /* check to see if we already have a visible rect for this particular selection ID */
 805
 806         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 807                 if ((*i)->id == id) {
 808                         return (*i);
 809                 }
 810         }
 811
 812         /* ditto for the free rect list */
 813
 814         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 815                 if ((*i)->id == id) {
 816                         SelectionRect* ret = (*i);
 817                         free_selection_rects.erase (i);
 818                         return ret;
 819                 }
 820         }
 821
 822         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 823
 824         if (free_selection_rects.empty()) {
 825
 826                 rect = new SelectionRect;
 827
 828                 rect->rect = new SimpleRect (*selection_group);
 829                 rect->rect->property_x1() = 0.0;
 830                 rect->rect->property_y1() = 0.0;
 831                 rect->rect->property_x2() = 0.0;
 832                 rect->rect->property_y2() = 0.0;
 833                 rect->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
 834                 rect->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 835
 836                 rect->start_trim = new SimpleRect (*selection_group);
 837                 rect->start_trim->property_x1() = 0.0;
 838                 rect->start_trim->property_x2() = 0.0;
 839                 rect->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 840                 rect->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 841
 842                 rect->end_trim = new SimpleRect (*selection_group);
 843                 rect->end_trim->property_x1() = 0.0;
 844                 rect->end_trim->property_x2() = 0.0;
 845                 rect->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 846                 rect->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 847
 848                 free_selection_rects.push_front (rect);
 849
 850                 rect->rect->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 851                 rect->start_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 852                 rect->end_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 853         }
 854
 855         rect = free_selection_rects.front();
 856         rect->id = id;
 857         free_selection_rects.pop_front();
 858         return rect;
 859 }
 860
 861 struct null_deleter { void operator()(void const *) const {} };
 862
 863 bool
 864 TimeAxisView::is_child (TimeAxisView* tav)
 865 {
 866         return find (children.begin(), children.end(), boost::shared_ptr<TimeAxisView>(tav, null_deleter())) != children.end();
 867 }
 868
 869 void
 870 TimeAxisView::add_child (boost::shared_ptr<TimeAxisView> child)
 871 {
 872         children.push_back (child);
 873 }
 874
 875 void
 876 TimeAxisView::remove_child (boost::shared_ptr<TimeAxisView> child)
 877 {
 878         Children::iterator i;
 879
 880         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 881                 children.erase (i);
 882         }
 883 }
 884
 885 void
 886 TimeAxisView::get_selectables (nframes_t /*start*/, nframes_t /*end*/, double /*top*/, double /*bot*/, list<Selectable*>& /*result*/)
 887 {
 888         return;
 889 }
 890
 891 void
 892 TimeAxisView::get_inverted_selectables (Selection& /*sel*/, list<Selectable*>& /*result*/)
 893 {
 894         return;
 895 }
 896
 897 void
 898 TimeAxisView::add_ghost (RegionView* rv)
 899 {
 900         GhostRegion* gr = rv->add_ghost (*this);
 901
 902         if(gr) {
 903                 ghosts.push_back(gr);
 904         }
 905 }
 906
 907 void
 908 TimeAxisView::remove_ghost (RegionView* rv)
 909 {
 910         rv->remove_ghost_in (*this);
 911 }
 912
 913 void
 914 TimeAxisView::erase_ghost (GhostRegion* gr)
 915 {
 916         if (in_destructor) {
 917                 return;
 918         }
 919
 920         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 921                 if ((*i) == gr) {
 922                         ghosts.erase (i);
 923                         break;
 924                 }
 925         }
 926 }
 927
 928 bool
 929 TimeAxisView::touched (double top, double bot)
 930 {
 931         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 932           y_position is the "origin" or "top" of the track.
 933         */
 934
 935         double mybot = _y_position + current_height();
 936
 937         return ((_y_position <= bot && _y_position >= top) ||
 938                 ((mybot <= bot) && (top < mybot)) ||
 939                 (mybot >= bot && _y_position < top));
 940 }
 941
 942 void
 943 TimeAxisView::set_parent (TimeAxisView& p)
 944 {
 945         parent = &p;
 946 }
 947
 948 bool
 949 TimeAxisView::has_state () const
 950 {
 951         return _has_state;
 952 }
 953
 954 TimeAxisView*
 955 TimeAxisView::get_parent_with_state ()
 956 {
 957         if (parent == 0) {
 958                 return 0;
 959         }
 960
 961         if (parent->has_state()) {
 962                 return parent;
 963         }
 964
 965         return parent->get_parent_with_state ();
 966 }
 967
 968
 969 XMLNode&
 970 TimeAxisView::get_state ()
 971 {
 972         XMLNode* node = new XMLNode ("TAV-" + name());
 973         char buf[32];
 974
 975         snprintf (buf, sizeof(buf), "%u", height);
 976         node->add_property ("height", buf);
 977         node->add_property ("marked-for-display", (_marked_for_display ? "1" : "0"));
 978         return *node;
 979 }
 980
 981 int
 982 TimeAxisView::set_state (const XMLNode& node, int /*version*/)
 983 {
 984         const XMLProperty *prop;
 985
 986         if ((prop = node.property ("marked-for-display")) != 0) {
 987                 _marked_for_display = (prop->value() == "1");
 988         }
 989
 990         if ((prop = node.property ("track-height")) != 0) {
 991
 992                 if (prop->value() == "largest") {
 993                         set_height (HeightLargest);
 994                 } else if (prop->value() == "large") {
 995                         set_height (HeightLarge);
 996                 } else if (prop->value() == "larger") {
 997                         set_height (HeightLarger);
 998                 } else if (prop->value() == "normal") {
 999                         set_height (HeightNormal);
1000                 } else if (prop->value() == "smaller") {
1001                         set_height (HeightSmaller);
1002                 } else if (prop->value() == "small") {
1003                         set_height (HeightSmall);
1004                 } else {
1005                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
1006                         set_height (HeightNormal);
1007                 }
1008
1009         } else if ((prop = node.property ("height")) != 0) {
1010
1011                 set_height (atoi (prop->value()));
1012
1013         } else {
1014
1015                 set_height (HeightNormal);
1016         }
1017
1018         return 0;
1019 }
1020
1021 void
1022 TimeAxisView::reset_height()
1023 {
1024         set_height (height);
1025
1026         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1027                 (*i)->set_height ((*i)->height);
1028         }
1029 }
1030
1031 void
1032 TimeAxisView::compute_heights ()
1033 {
1034         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
1035         Gtk::Table two_row_table (2, 8);
1036         Gtk::Table one_row_table (1, 8);
1037         Button* buttons[5];
1038         const int border_width = 2;
1039         extra_height = (2 * border_width)
1040                 //+ 2   // 2 pixels for the hseparator between TimeAxisView control areas
1041                 + 10; // resizer button (3 x 2 pixel elements + 2 x 2 pixel gaps)
1042
1043         window.add (one_row_table);
1044
1045         one_row_table.set_border_width (border_width);
1046         one_row_table.set_row_spacings (0);
1047         one_row_table.set_col_spacings (0);
1048         one_row_table.set_homogeneous (true);
1049
1050         two_row_table.set_border_width (border_width);
1051         two_row_table.set_row_spacings (0);
1052         two_row_table.set_col_spacings (0);
1053         two_row_table.set_homogeneous (true);
1054
1055         for (int i = 0; i < 5; ++i) {
1056                 buttons[i] = manage (new Button (X_("f")));
1057                 buttons[i]->set_name ("TrackMuteButton");
1058         }
1059
1060         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1061
1062         one_row_table.show_all ();
1063         Gtk::Requisition req(one_row_table.size_request ());
1064
1065         // height required to show 1 row of buttons
1066
1067         smaller_height = req.height + extra_height;
1068 }
1069
1070 void
1071 TimeAxisView::show_name_label ()
1072 {
1073         if (!(name_packing & NameLabelPacked)) {
1074                 name_hbox.pack_start (name_label, true, true);
1075                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1076                 name_hbox.show ();
1077                 name_label.show ();
1078         }
1079 }
1080
1081 void
1082 TimeAxisView::show_name_entry ()
1083 {
1084         if (!(name_packing & NameEntryPacked)) {
1085                 name_hbox.pack_start (name_entry, true, true);
1086                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1087                 name_hbox.show ();
1088                 name_entry.show ();
1089         }
1090 }
1091
1092 void
1093 TimeAxisView::hide_name_label ()
1094 {
1095         if (name_packing & NameLabelPacked) {
1096                 name_hbox.remove (name_label);
1097                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1098         }
1099 }
1100
1101 void
1102 TimeAxisView::hide_name_entry ()
1103 {
1104         if (name_packing & NameEntryPacked) {
1105                 name_hbox.remove (name_entry);
1106                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1107         }
1108 }
1109
1110 void
1111 TimeAxisView::color_handler ()
1112 {
1113         for (list<GhostRegion*>::iterator i=ghosts.begin(); i != ghosts.end(); i++ ) {
1114                 (*i)->set_colors();
1115         }
1116
1117         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
1118
1119                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1120                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1121
1122                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1123                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1124
1125                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1126                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1127         }
1128
1129         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
1130
1131                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1132                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1133
1134                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1135                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1136
1137                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1138                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1139         }
1140 }
1141
1142 /** @return Pair: TimeAxisView, layer index.
1143  * TimeAxisView is non-0 if this object covers y, or one of its children does.
1144  * If the covering object is a child axis, then the child is returned.
1145  * TimeAxisView is 0 otherwise.
1146  * Layer index is the layer number if the TimeAxisView is valid and is in stacked
1147  * region display mode, otherwise 0.
1148  */
1149 std::pair<TimeAxisView*, layer_t>
1150 TimeAxisView::covers_y_position (double y)
1151 {
1152         if (hidden()) {
1153                 return std::make_pair ( (TimeAxisView *) 0, 0);
1154         }
1155
1156         if (_y_position <= y && y < (_y_position + height)) {
1157
1158                 /* work out the layer index if appropriate */
1159                 layer_t l = 0;
1160                 if (layer_display () == Stacked && view ()) {
1161                         /* compute layer */
1162                         l = layer_t ((_y_position + height - y) / (view()->child_height ()));
1163                         /* clamp to max layers to be on the safe side; sometimes the above calculation
1164                           returns a too-high value */
1165                         if (l >= view()->layers ()) {
1166                                 l = view()->layers() - 1;
1167                         }
1168                 }
1169
1170                 return std::make_pair (this, l);
1171         }
1172
1173         for (Children::const_iterator i = children.begin(); i != children.end(); ++i) {
1174
1175                 std::pair<TimeAxisView*, int> const r = (*i)->covers_y_position (y);
1176                 if (r.first) {
1177                         return r;
1178                 }
1179         }
1180
1181         return std::make_pair ( (TimeAxisView *) 0, 0);
1182 }
1183
1184 void
1185 TimeAxisView::show_feature_lines (const AnalysisFeatureList& pos)
1186 {
1187         analysis_features = pos;
1188         reshow_feature_lines ();
1189 }
1190
1191
1192 void
1193 TimeAxisView::hide_feature_lines ()
1194 {
1195         list<ArdourCanvas::SimpleLine*>::iterator l;
1196
1197         for (l = feature_lines.begin(); l != feature_lines.end(); ++l) {
1198                 (*l)->hide();
1199         }
1200 }
1201
1202 void
1203 TimeAxisView::reshow_feature_lines ()
1204 {
1205         while (feature_lines.size()< analysis_features.size()) {
1206                 ArdourCanvas::SimpleLine* l = new ArdourCanvas::SimpleLine (*_canvas_display);
1207                 l->property_color_rgba() = (guint) ARDOUR_UI::config()->canvasvar_ZeroLine.get();
1208                 feature_lines.push_back (l);
1209         }
1210
1211         while (feature_lines.size() > analysis_features.size()) {
1212                 ArdourCanvas::SimpleLine *line = feature_lines.back();
1213                 feature_lines.pop_back ();
1214                 delete line;
1215         }
1216
1217         AnalysisFeatureList::const_iterator i;
1218         list<ArdourCanvas::SimpleLine*>::iterator l;
1219
1220         for (i = analysis_features.begin(), l = feature_lines.begin(); i != analysis_features.end() && l != feature_lines.end(); ++i, ++l) {
1221                 (*l)->property_x1() = _editor.frame_to_pixel (*i);
1222                 (*l)->property_x2() = _editor.frame_to_pixel (*i);
1223                 (*l)->property_y1() = 0;
1224                 (*l)->property_y2() = current_height();
1225                 (*l)->show ();
1226         }
1227 }
1228
1229 bool
1230 TimeAxisView::resizer_button_press (GdkEventButton* event)
1231 {
1232         _resize_drag_start = event->y_root;
1233         return true;
1234 }
1235
1236 bool
1237 TimeAxisView::resizer_button_release (GdkEventButton*)
1238 {
1239         _resize_drag_start = -1;
1240         return true;
1241 }
1242
1243 void
1244 TimeAxisView::idle_resize (uint32_t h)
1245 {
1246         set_height (h);
1247 }
1248
1249 bool
1250 TimeAxisView::resizer_motion (GdkEventMotion* ev)
1251 {
1252         if (_resize_drag_start >= 0) {
1253                 int32_t const delta = (int32_t) floor (ev->y_root - _resize_drag_start);
1254                 _editor.add_to_idle_resize (this, delta);
1255                 _resize_drag_start = ev->y_root;
1256         }
1257
1258         return true;
1259 }
1260
1261 bool
1262 TimeAxisView::resizer_expose (GdkEventExpose* event)
1263 {
1264         int w, h, x, y, d;
1265         Glib::RefPtr<Gdk::Window> win (resizer.get_window());
1266         Glib::RefPtr<Gdk::GC> dark (resizer.get_style()->get_fg_gc (STATE_NORMAL));
1267         Glib::RefPtr<Gdk::GC> light (resizer.get_style()->get_bg_gc (STATE_NORMAL));
1268
1269         win->draw_rectangle (controls_ebox.get_style()->get_bg_gc(STATE_NORMAL),
1270                         true,
1271                         event->area.x,
1272                         event->area.y,
1273                         event->area.width,
1274                         event->area.height);
1275
1276         win->get_geometry (x, y, w, h, d);
1277
1278         /* handle/line #1 */
1279
1280         win->draw_line (dark, 0, 0, w - 2, 0);
1281         win->draw_point (dark, 0, 1);
1282         win->draw_line (light, 1, 1, w - 1, 1);
1283         win->draw_point (light, w - 1, 0);
1284
1285         /* handle/line #2 */
1286
1287         win->draw_line (dark, 0, 4, w - 2, 4);
1288         win->draw_point (dark, 0, 5);
1289         win->draw_line (light, 1, 5, w - 1, 5);
1290         win->draw_point (light, w - 1, 4);
1291
1292         /* use vertical resize mouse cursor */
1293         win->set_cursor(Gdk::Cursor(Gdk::SB_V_DOUBLE_ARROW));
1294
1295         return true;
1296 }
1297
1298 bool
1299 TimeAxisView::set_visibility (bool yn)
1300 {
1301         if (yn != marked_for_display()) {
1302                 if (yn) {
1303                         set_marked_for_display (true);
1304                         canvas_display()->show();
1305                 } else {
1306                         set_marked_for_display (false);
1307                         hide ();
1308                 }
1309                 return true; // things changed
1310         }
1311
1312         return false;
1313 }
1314
1315 uint32_t
1316 TimeAxisView::preset_height (Height h)
1317 {
1318         switch (h) {
1319         case HeightLargest:
1320                 return extra_height + 48 + 250;
1321         case HeightLarger:
1322                 return extra_height + 48 + 150;
1323         case HeightLarge:
1324                 return extra_height + 48 + 50;
1325         case HeightNormal:
1326                 return extra_height + 48;
1327         case HeightSmall:
1328                 return 27;
1329         case HeightSmaller:
1330                 return smaller_height;
1331         }
1332
1333         /* NOTREACHED */
1334         return 0;
1335 }