gtk2_ardour/time_axis_view.cc

   1 /*
   2     Copyright (C) 2000 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <cstdlib>
  21 #include <cmath>
  22 #include <algorithm>
  23 #include <string>
  24 #include <list>
  25
  26 #include <libgnomecanvasmm.h>
  27 #include <libgnomecanvasmm/canvas.h>
  28 #include <libgnomecanvasmm/item.h>
  29
  30 #include <pbd/error.h>
  31
  32 #include <gtkmm2ext/utils.h>
  33 #include <gtkmm2ext/selector.h>
  34 #include <gtkmm2ext/stop_signal.h>
  35
  36 #include <ardour/session.h>
  37 #include <ardour/utils.h>
  38 #include <ardour/ladspa_plugin.h>
  39 #include <ardour/insert.h>
  40 #include <ardour/location.h>
  41
  42 #include "ardour_ui.h"
  43 #include "public_editor.h"
  44 #include "time_axis_view.h"
  45 #include "simplerect.h"
  46 #include "selection.h"
  47 #include "keyboard.h"
  48 #include "rgb_macros.h"
  49 #include "utils.h"
  50
  51 #include "i18n.h"
  52
  53 using namespace Gtk;
  54 using namespace Gdk;
  55 using namespace sigc;
  56 using namespace ARDOUR;
  57 using namespace PBD;
  58 using namespace Editing;
  59 using namespace ArdourCanvas;
  60
  61 const double trim_handle_size = 6.0; /* pixels */
  62
  63 uint32_t TimeAxisView::hLargest = 0;
  64 uint32_t TimeAxisView::hLarge = 0;
  65 uint32_t TimeAxisView::hLarger = 0;
  66 uint32_t TimeAxisView::hNormal = 0;
  67 uint32_t TimeAxisView::hSmaller = 0;
  68 uint32_t TimeAxisView::hSmall = 0;
  69 bool TimeAxisView::need_size_info = true;
  70
  71 TimeAxisView::TimeAxisView (ARDOUR::Session& sess, PublicEditor& ed, TimeAxisView* rent, Canvas& canvas)
  72         : AxisView (sess),
  73           editor (ed),
  74           height_style(Small),
  75           y_position(0),
  76           order(0),
  77           controls_table (2, 8)
  78 {
  79         if (need_size_info) {
  80                 compute_controls_size_info ();
  81                 need_size_info = false;
  82         }
  83
  84         canvas_display = new Group (*canvas.root(), 0.0, 0.0);
  85
  86         selection_group = new Group (*canvas_display);
  87         selection_group->hide();
  88
  89         control_parent = 0;
  90         display_menu = 0;
  91         size_menu = 0;
  92         _marked_for_display = false;
  93         _hidden = false;
  94         height = 0;
  95         effective_height = 0;
  96         parent = rent;
  97         _has_state = false;
  98         last_name_entry_key_press_event = 0;
  99         name_packing = NamePackingBits (0);
 100
 101         /*
 102           Create the standard LHS Controls
 103           We create the top-level container and name add the name label here,
 104           subclasses can add to the layout as required
 105         */
 106
 107         name_entry.set_name ("EditorTrackNameDisplay");
 108         name_entry.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_release));
 109         name_entry.signal_button_press_event().connect (mem_fun (*this, &TimeAxisView::name_entry_button_press));
 110         name_entry.signal_key_release_event().connect (mem_fun (*this, &TimeAxisView::name_entry_key_release));
 111         name_entry.signal_activate().connect (mem_fun(*this, &TimeAxisView::name_entry_activated));
 112         name_entry.signal_focus_in_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 113         name_entry.signal_focus_out_event().connect (mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 114         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 115
 116         name_label.set_name ("TrackLabel");
 117         name_label.set_alignment (0.0, 0.5);
 118
 119         /* typically, either name_label OR name_entry are visible,
 120            but not both. its up to derived classes to show/hide them as they
 121            wish.
 122         */
 123
 124         name_hbox.show ();
 125
 126         controls_table.set_border_width (2);
 127         controls_table.set_row_spacings (0);
 128         controls_table.set_col_spacings (0);
 129         controls_table.set_homogeneous (true);
 130
 131         controls_table.attach (name_hbox, 0, 4, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND);
 132         controls_table.show_all ();
 133         controls_table.set_no_show_all ();
 134
 135         controls_vbox.pack_start (controls_table, false, false);
 136         controls_vbox.show ();
 137
 138         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 139         controls_ebox.add (controls_vbox);
 140         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 141         controls_ebox.set_flags (CAN_FOCUS);
 142
 143         controls_ebox.signal_button_release_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 144         controls_ebox.signal_scroll_event().connect (mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 145
 146         controls_lhs_pad.set_name ("TimeAxisViewControlsPadding");
 147         controls_hbox.pack_start (controls_lhs_pad,false,false);
 148         controls_hbox.pack_start (controls_ebox,true,true);
 149         controls_hbox.show ();
 150
 151         controls_frame.add (controls_hbox);
 152         controls_frame.set_name ("TimeAxisViewControlsBaseUnselected");
 153         controls_frame.set_shadow_type (Gtk::SHADOW_ETCHED_OUT);
 154
 155         ColorChanged.connect (mem_fun (*this, &TimeAxisView::color_handler));
 156 }
 157
 158 TimeAxisView::~TimeAxisView()
 159 {
 160         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 161                 delete *i;
 162         }
 163
 164         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 165                 delete (*i)->rect;
 166                 delete (*i)->start_trim;
 167                 delete (*i)->end_trim;
 168
 169         }
 170
 171         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 172                 delete (*i)->rect;
 173                 delete (*i)->start_trim;
 174                 delete (*i)->end_trim;
 175         }
 176
 177         if (selection_group) {
 178                 delete selection_group;
 179                 selection_group = 0;
 180         }
 181
 182         if (canvas_display) {
 183                 delete canvas_display;
 184                 canvas_display = 0;
 185         }
 186
 187         if (display_menu) {
 188                 delete display_menu;
 189                 display_menu = 0;
 190         }
 191 }
 192
 193 guint32
 194 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 195 {
 196         gdouble ix1, ix2, iy1, iy2;
 197         effective_height = 0;
 198
 199         if (control_parent) {
 200                 control_parent->reorder_child (controls_frame, nth);
 201         } else {
 202                 control_parent = parent;
 203                 parent->pack_start (controls_frame, false, false);
 204                 parent->reorder_child (controls_frame, nth);
 205         }
 206         controls_frame.show ();
 207         controls_ebox.show ();
 208
 209         /* the coordinates used here are in the system of the
 210            item's parent ...
 211         */
 212
 213         canvas_display->get_bounds (ix1, iy1, ix2, iy2);
 214         Group* pg = canvas_display->property_parent();
 215         pg->i2w (ix1, iy1);
 216
 217         if (iy1 < 0) {
 218                 iy1 = 0;
 219         }
 220
 221         canvas_display->move (0.0, y - iy1);
 222         canvas_display->show();/* XXX not necessary */
 223         y_position = y;
 224         order = nth;
 225         _hidden = false;
 226
 227         /* height in pixels depends on _order, so update it now we've changed _order */
 228         set_height (height_style);
 229
 230         effective_height = height;
 231
 232         /* now show children */
 233
 234         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 235
 236                 if ((*i)->marked_for_display()) {
 237                         (*i)->canvas_display->show();
 238                 }
 239
 240                 if (canvas_item_visible ((*i)->canvas_display)) {
 241                         ++nth;
 242                         effective_height += (*i)->show_at (y + effective_height, nth, parent);
 243                 }
 244         }
 245
 246         return effective_height;
 247 }
 248
 249 bool
 250 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 251 {
 252         switch (ev->direction) {
 253         case GDK_SCROLL_UP:
 254                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::Shift)) {
 255                         step_height (true);
 256                         return true;
 257                 }
 258                 break;
 259
 260         case GDK_SCROLL_DOWN:
 261                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::Shift)) {
 262                         step_height (false);
 263                         return true;
 264                 }
 265                 break;
 266
 267         default:
 268                 /* no handling for left/right, yet */
 269                 break;
 270         }
 271
 272         return false;
 273 }
 274
 275 bool
 276 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 277 {
 278         switch (ev->button) {
 279         case 1:
 280                 selection_click (ev);
 281                 break;
 282
 283         case 3:
 284                 popup_display_menu (ev->time);
 285                 break;
 286         }
 287
 288         return true;
 289 }
 290
 291 void
 292 TimeAxisView::selection_click (GdkEventButton* ev)
 293 {
 294         Selection::Operation op = Keyboard::selection_type (ev->state);
 295         editor.set_selected_track (*this, op, false);
 296 }
 297
 298 void
 299 TimeAxisView::hide ()
 300 {
 301         if (_hidden) {
 302                 return;
 303         }
 304
 305         canvas_display->hide();
 306         controls_frame.hide ();
 307
 308         if (control_parent) {
 309                 control_parent->remove (controls_frame);
 310                 control_parent = 0;
 311         }
 312
 313         y_position = -1;
 314         _hidden = true;
 315
 316         /* now hide children */
 317
 318         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 319                 (*i)->hide ();
 320         }
 321
 322         Hiding ();
 323 }
 324
 325 void
 326 TimeAxisView::step_height (bool bigger)
 327 {
 328
 329        if (height == hLargest) {
 330                if (!bigger) set_height (Large);
 331                return;
 332        }
 333        if (height == hLarge) {
 334                if (bigger) set_height (Largest);
 335                 else set_height (Larger);
 336                return;
 337        }
 338        if (height == hLarger) {
 339                 if (bigger) set_height (Large);
 340                 else set_height (Normal);
 341                return;
 342        }
 343        if (height == hNormal) {
 344                 if (bigger) set_height (Larger);
 345                 else set_height (Smaller);
 346                return;
 347        }
 348        if (height == hSmaller) {
 349                 if (bigger) set_height (Normal);
 350                 else set_height (Small);
 351                return;
 352        }
 353        if (height == hSmall) {
 354                 if (bigger) set_height (Smaller);
 355                return;
 356        }
 357 }
 358
 359 void
 360 TimeAxisView::set_height (TrackHeight h)
 361 {
 362         height_style = h;
 363         set_height_pixels (height_to_pixels (h));
 364 }
 365
 366 void
 367 TimeAxisView::set_height_pixels (uint32_t h)
 368 {
 369         height = h;
 370         controls_frame.set_size_request (-1, height + ((order == 0) ? 1 : 0));
 371
 372         if (canvas_item_visible (selection_group)) {
 373                 /* resize the selection rect */
 374                 show_selection (editor.get_selection().time);
 375         }
 376 }
 377
 378 bool
 379 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 380 {
 381         PublicEditor::TrackViewList *allviews = 0;
 382         PublicEditor::TrackViewList::iterator i;
 383
 384         switch (ev->keyval) {
 385         case GDK_Escape:
 386                 name_entry.select_region (0,0);
 387                 controls_ebox.grab_focus ();
 388                 name_entry_changed ();
 389                 return true;
 390
 391         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 392          * generates a different ev->keyval, rather than setting
 393          * ev->state.
 394          */
 395         case GDK_ISO_Left_Tab:
 396         case GDK_Tab:
 397                 name_entry_changed ();
 398                 allviews = editor.get_valid_views (0);
 399                 if (allviews != 0) {
 400                         i = find (allviews->begin(), allviews->end(), this);
 401                         if (ev->keyval == GDK_Tab) {
 402                                 if (i != allviews->end()) {
 403                                         do {
 404                                                 if (++i == allviews->end()) { return true; }
 405                                         } while((*i)->hidden());
 406                                 }
 407                         } else {
 408                                 if (i != allviews->begin()) {
 409                                         do {
 410                                                 if (--i == allviews->begin()) { return true; }
 411                                         } while ((*i)->hidden());
 412                                 }
 413                         }
 414
 415                         if ((*i)->height_style == Small) {
 416                                 (*i)->set_height(Smaller);
 417                         }
 418
 419                         (*i)->name_entry.grab_focus();
 420                 }
 421                 return true;
 422
 423         case GDK_Up:
 424         case GDK_Down:
 425                 name_entry_changed ();
 426                 return true;
 427
 428         default:
 429                 break;
 430         }
 431
 432 #ifdef TIMEOUT_NAME_EDIT
 433         /* adapt the timeout to reflect the user's typing speed */
 434
 435         guint32 name_entry_timeout;
 436
 437         if (last_name_entry_key_press_event) {
 438                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 439                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 440         } else {
 441                 /* start with a 1 second timeout */
 442                 name_entry_timeout = 1000;
 443         }
 444
 445         last_name_entry_key_press_event = ev->time;
 446
 447         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 448
 449         name_entry_key_timeout.disconnect();
 450         name_entry_key_timeout = Glib::signal_timeout().connect (mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 451 #endif
 452
 453         return false;
 454 }
 455
 456 bool
 457 TimeAxisView::name_entry_focus_in (GdkEventFocus* ev)
 458 {
 459         name_entry.select_region (0, -1);
 460         name_entry.set_name ("EditorActiveTrackNameDisplay");
 461         return false;
 462 }
 463
 464 bool
 465 TimeAxisView::name_entry_focus_out (GdkEventFocus* ev)
 466 {
 467         /* clean up */
 468
 469         last_name_entry_key_press_event = 0;
 470         name_entry_key_timeout.disconnect ();
 471         name_entry.set_name ("EditorTrackNameDisplay");
 472         name_entry.select_region (0,0);
 473
 474         /* do the real stuff */
 475
 476         name_entry_changed ();
 477
 478         return false;
 479 }
 480
 481 bool
 482 TimeAxisView::name_entry_key_timed_out ()
 483 {
 484         name_entry_activated();
 485         return false;
 486 }
 487
 488 void
 489 TimeAxisView::name_entry_activated ()
 490 {
 491         controls_ebox.grab_focus();
 492 }
 493
 494 void
 495 TimeAxisView::name_entry_changed ()
 496 {
 497 }
 498
 499 bool
 500 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 501 {
 502         if (ev->button == 3) {
 503                 return true;
 504         }
 505         return false;
 506 }
 507
 508 bool
 509 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 510 {
 511         if (ev->button == 3) {
 512                 popup_display_menu (ev->time);
 513                 return true;
 514         }
 515         return false;
 516 }
 517
 518 void
 519 TimeAxisView::popup_display_menu (guint32 when)
 520 {
 521         if (display_menu == 0) {
 522                 build_display_menu ();
 523         }
 524
 525         if (!get_selected()) {
 526                 editor.set_selected_track (*this, Selection::Set);
 527         }
 528
 529         display_menu->popup (1, when);
 530 }
 531
 532 gint
 533 TimeAxisView::size_click (GdkEventButton *ev)
 534 {
 535         editor.set_selected_track (*this, Selection::Add);
 536         popup_size_menu (ev->time);
 537         return TRUE;
 538 }
 539
 540 void
 541 TimeAxisView::popup_size_menu (guint32 when)
 542 {
 543         if (size_menu == 0) {
 544                 build_size_menu ();
 545         }
 546         size_menu->popup (1, when);
 547 }
 548
 549 void
 550 TimeAxisView::set_selected (bool yn)
 551 {
 552         AxisView::set_selected (yn);
 553
 554         if (_selected) {
 555                 controls_ebox.set_name (controls_base_selected_name);
 556                 controls_frame.set_name (controls_base_selected_name);
 557
 558                 /* propagate any existing selection, if the mode is right */
 559
 560                 if (editor.current_mouse_mode() == Editing::MouseRange && !editor.get_selection().time.empty()) {
 561                         show_selection (editor.get_selection().time);
 562                 }
 563
 564         } else {
 565                 controls_ebox.set_name (controls_base_unselected_name);
 566                 controls_frame.set_name (controls_base_unselected_name);
 567
 568                 hide_selection ();
 569
 570                 /* children will be set for the yn=true case. but when deselecting
 571                    the editor only has a list of top-level trackviews, so we
 572                    have to do this here.
 573                 */
 574
 575                 for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 576                         (*i)->set_selected (false);
 577                 }
 578
 579
 580         }
 581 }
 582
 583 void
 584 TimeAxisView::build_size_menu ()
 585 {
 586         using namespace Menu_Helpers;
 587
 588         size_menu = new Menu;
 589         size_menu->set_name ("ArdourContextMenu");
 590         MenuList& items = size_menu->items();
 591
 592         items.push_back (MenuElem (_("Largest"), bind (mem_fun (*this, &TimeAxisView::set_height), Largest)));
 593         items.push_back (MenuElem (_("Large"), bind (mem_fun (*this, &TimeAxisView::set_height), Large)));
 594         items.push_back (MenuElem (_("Larger"), bind (mem_fun (*this, &TimeAxisView::set_height), Larger)));
 595         items.push_back (MenuElem (_("Normal"), bind (mem_fun (*this, &TimeAxisView::set_height), Normal)));
 596         items.push_back (MenuElem (_("Smaller"), bind (mem_fun (*this, &TimeAxisView::set_height),Smaller)));
 597         items.push_back (MenuElem (_("Small"), bind (mem_fun (*this, &TimeAxisView::set_height), Small)));
 598 }
 599
 600 void
 601 TimeAxisView::build_display_menu ()
 602 {
 603         using namespace Menu_Helpers;
 604
 605         display_menu = new Menu;
 606         display_menu->set_name ("ArdourContextMenu");
 607
 608         // Just let implementing classes define what goes into the manu
 609 }
 610
 611 void
 612 TimeAxisView::set_samples_per_unit (double spu)
 613 {
 614         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 615                 (*i)->set_samples_per_unit (spu);
 616         }
 617 }
 618
 619 void
 620 TimeAxisView::show_timestretch (nframes_t start, nframes_t end)
 621 {
 622         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 623                 (*i)->show_timestretch (start, end);
 624         }
 625 }
 626
 627 void
 628 TimeAxisView::hide_timestretch ()
 629 {
 630         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 631                 (*i)->hide_timestretch ();
 632         }
 633 }
 634
 635 void
 636 TimeAxisView::show_selection (TimeSelection& ts)
 637 {
 638         double x1;
 639         double x2;
 640         double y2;
 641         SelectionRect *rect;
 642
 643         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 644                 (*i)->show_selection (ts);
 645         }
 646
 647         if (canvas_item_visible (selection_group)) {
 648                 while (!used_selection_rects.empty()) {
 649                         free_selection_rects.push_front (used_selection_rects.front());
 650                         used_selection_rects.pop_front();
 651                         free_selection_rects.front()->rect->hide();
 652                         free_selection_rects.front()->start_trim->hide();
 653                         free_selection_rects.front()->end_trim->hide();
 654                 }
 655                 selection_group->hide();
 656         }
 657
 658         selection_group->show();
 659         selection_group->raise_to_top();
 660
 661         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 662                 nframes_t start, end, cnt;
 663
 664                 start = (*i).start;
 665                 end = (*i).end;
 666                 cnt = end - start + 1;
 667
 668                 rect = get_selection_rect ((*i).id);
 669
 670                 x1 = editor.frame_to_unit (start);
 671                 x2 = editor.frame_to_unit (start + cnt - 1);
 672                 y2 = height;
 673
 674                 rect->rect->property_x1() = x1;
 675                 rect->rect->property_y1() = 1.0;
 676                 rect->rect->property_x2() = x2;
 677                 rect->rect->property_y2() = y2;
 678
 679                 // trim boxes are at the top for selections
 680
 681                 if (x2 > x1) {
 682                         rect->start_trim->property_x1() = x1;
 683                         rect->start_trim->property_y1() = 1.0;
 684                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 685                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 686
 687                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 688                         rect->end_trim->property_y1() = 1.0;
 689                         rect->end_trim->property_x2() = x2;
 690                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 691
 692                         rect->start_trim->show();
 693                         rect->end_trim->show();
 694                 } else {
 695                         rect->start_trim->hide();
 696                         rect->end_trim->hide();
 697                 }
 698
 699                 rect->rect->show ();
 700                 used_selection_rects.push_back (rect);
 701         }
 702 }
 703
 704 void
 705 TimeAxisView::reshow_selection (TimeSelection& ts)
 706 {
 707         show_selection (ts);
 708
 709         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 710                 (*i)->show_selection (ts);
 711         }
 712 }
 713
 714 void
 715 TimeAxisView::hide_selection ()
 716 {
 717         if (canvas_item_visible (selection_group)) {
 718                 while (!used_selection_rects.empty()) {
 719                         free_selection_rects.push_front (used_selection_rects.front());
 720                         used_selection_rects.pop_front();
 721                         free_selection_rects.front()->rect->hide();
 722                         free_selection_rects.front()->start_trim->hide();
 723                         free_selection_rects.front()->end_trim->hide();
 724                 }
 725                 selection_group->hide();
 726         }
 727
 728         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 729                 (*i)->hide_selection ();
 730         }
 731 }
 732
 733 void
 734 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 735 {
 736         /* find the selection rect this is for. we have the item corresponding to one
 737            of the trim handles.
 738          */
 739
 740         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 741                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 742
 743                         /* make one trim handle be "above" the other so that if they overlap,
 744                            the top one is the one last used.
 745                         */
 746
 747                         (*i)->rect->raise_to_top ();
 748                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 749                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 750
 751                         break;
 752                 }
 753         }
 754 }
 755
 756 SelectionRect *
 757 TimeAxisView::get_selection_rect (uint32_t id)
 758 {
 759         SelectionRect *rect;
 760
 761         /* check to see if we already have a visible rect for this particular selection ID */
 762
 763         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 764                 if ((*i)->id == id) {
 765                         return (*i);
 766                 }
 767         }
 768
 769         /* ditto for the free rect list */
 770
 771         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 772                 if ((*i)->id == id) {
 773                         SelectionRect* ret = (*i);
 774                         free_selection_rects.erase (i);
 775                         return ret;
 776                 }
 777         }
 778
 779         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 780
 781         if (free_selection_rects.empty()) {
 782
 783                 rect = new SelectionRect;
 784
 785                 rect->rect = new SimpleRect (*selection_group);
 786                 rect->rect->property_x1() = 0.0;
 787                 rect->rect->property_y1() = 0.0;
 788                 rect->rect->property_x2() = 0.0;
 789                 rect->rect->property_y2() = 0.0;
 790                 rect->rect->property_fill_color_rgba() = color_map[cSelectionRectFill];
 791                 rect->rect->property_outline_color_rgba() = color_map[cSelectionRectOutline];
 792
 793                 rect->start_trim = new SimpleRect (*selection_group);
 794                 rect->start_trim->property_x1() = 0.0;
 795                 rect->start_trim->property_x2() = 0.0;
 796                 rect->start_trim->property_fill_color_rgba() = color_map[cSelectionStartFill];
 797                 rect->start_trim->property_outline_color_rgba() = color_map[cSelectionStartOutline];
 798
 799                 rect->end_trim = new SimpleRect (*selection_group);
 800                 rect->end_trim->property_x1() = 0.0;
 801                 rect->end_trim->property_x2() = 0.0;
 802                 rect->end_trim->property_fill_color_rgba() = color_map[cSelectionEndFill];
 803                 rect->end_trim->property_outline_color_rgba() = color_map[cSelectionEndOutline];
 804
 805                 free_selection_rects.push_front (rect);
 806
 807                 rect->rect->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 808                 rect->start_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 809                 rect->end_trim->signal_event().connect (bind (mem_fun (editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 810         }
 811
 812         rect = free_selection_rects.front();
 813         rect->id = id;
 814         free_selection_rects.pop_front();
 815         return rect;
 816 }
 817
 818 bool
 819 TimeAxisView::is_child (TimeAxisView* tav)
 820 {
 821         return find (children.begin(), children.end(), tav) != children.end();
 822 }
 823
 824 void
 825 TimeAxisView::add_child (TimeAxisView* child)
 826 {
 827         children.push_back (child);
 828 }
 829
 830 void
 831 TimeAxisView::remove_child (TimeAxisView* child)
 832 {
 833         vector<TimeAxisView*>::iterator i;
 834
 835         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 836                 children.erase (i);
 837         }
 838 }
 839
 840 void
 841 TimeAxisView::get_selectables (nframes_t start, nframes_t end, double top, double bot, list<Selectable*>& result)
 842 {
 843         return;
 844 }
 845
 846 void
 847 TimeAxisView::get_inverted_selectables (Selection& sel, list<Selectable*>& result)
 848 {
 849         return;
 850 }
 851
 852 bool
 853 TimeAxisView::touched (double top, double bot)
 854 {
 855         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 856            y_position is the "origin" or "top" of the track.
 857          */
 858
 859         double mybot = y_position + height;
 860
 861         return ((y_position <= bot && y_position >= top) ||
 862                 ((mybot <= bot) && (top < mybot)) ||
 863                 (mybot >= bot && y_position < top));
 864 }
 865
 866 void
 867 TimeAxisView::set_parent (TimeAxisView& p)
 868 {
 869         parent = &p;
 870 }
 871
 872 bool
 873 TimeAxisView::has_state () const
 874 {
 875         return _has_state;
 876 }
 877
 878 TimeAxisView*
 879 TimeAxisView::get_parent_with_state ()
 880 {
 881         if (parent == 0) {
 882                 return 0;
 883         }
 884
 885         if (parent->has_state()) {
 886                 return parent;
 887         }
 888
 889         return parent->get_parent_with_state ();
 890 }
 891
 892 void
 893 TimeAxisView::set_state (const XMLNode& node)
 894 {
 895         const XMLProperty *prop;
 896
 897         if ((prop = node.property ("track_height")) != 0) {
 898
 899                 if (prop->value() == "largest") {
 900                         set_height (Largest);
 901                 } else if (prop->value() == "large") {
 902                         set_height (Large);
 903                 } else if (prop->value() == "larger") {
 904                         set_height (Larger);
 905                 } else if (prop->value() == "normal") {
 906                         set_height (Normal);
 907                 } else if (prop->value() == "smaller") {
 908                         set_height (Smaller);
 909                 } else if (prop->value() == "small") {
 910                         set_height (Small);
 911                 } else {
 912                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
 913                         set_height (Normal);
 914                 }
 915
 916         } else {
 917                 set_height (Normal);
 918         }
 919 }
 920
 921 void
 922 TimeAxisView::reset_height()
 923 {
 924         set_height_pixels (height);
 925
 926         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
 927                 (*i)->set_height_pixels ((TrackHeight)(*i)->height);
 928         }
 929 }
 930
 931 uint32_t
 932 TimeAxisView::height_to_pixels (TrackHeight h)
 933 {
 934         switch (h) {
 935         case Largest:
 936                 return hLargest;
 937         case Large:
 938                 return hLarge;
 939         case Larger:
 940                 return hLarger;
 941         case Normal:
 942                 return hNormal;
 943         case Smaller:
 944                 return hSmaller;
 945         case Small:
 946                 return hSmall;
 947         }
 948
 949         // what is wrong with gcc ?
 950
 951         return hNormal;
 952 }
 953
 954 void
 955 TimeAxisView::compute_controls_size_info ()
 956 {
 957         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
 958         Gtk::Table two_row_table (2, 8);
 959         Gtk::Table one_row_table (1, 8);
 960         Button* buttons[5];
 961         const int border_width = 2;
 962         const int extra_height = (2 * border_width) + 2; // 2 pixels for the controls frame
 963
 964         window.add (one_row_table);
 965
 966         one_row_table.set_border_width (border_width);
 967         one_row_table.set_row_spacings (0);
 968         one_row_table.set_col_spacings (0);
 969         one_row_table.set_homogeneous (true);
 970
 971         two_row_table.set_border_width (border_width);
 972         two_row_table.set_row_spacings (0);
 973         two_row_table.set_col_spacings (0);
 974         two_row_table.set_homogeneous (true);
 975
 976         for (int i = 0; i < 5; ++i) {
 977                 buttons[i] = manage (new Button (X_("f")));
 978                 buttons[i]->set_name ("TrackMuteButton");
 979         }
 980
 981         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 982
 983         one_row_table.show_all ();
 984         Gtk::Requisition req(one_row_table.size_request ());
 985
 986
 987         // height required to show 1 row of buttons
 988
 989         hSmaller = req.height + extra_height;
 990
 991         window.remove ();
 992         window.add (two_row_table);
 993
 994         two_row_table.attach (*buttons[1], 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 995         two_row_table.attach (*buttons[2], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 996         two_row_table.attach (*buttons[3], 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 997         two_row_table.attach (*buttons[4], 8, 9, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
 998
 999         two_row_table.show_all ();
1000         req = two_row_table.size_request ();
1001
1002         // height required to show all normal buttons
1003
1004         hNormal = req.height + extra_height;
1005
1006         // these heights are all just larger than normal. no more
1007         // elements are visible (yet).
1008
1009         hLarger = hNormal + 50;
1010         hLarge = hNormal + 150;
1011         hLargest = hNormal + 250;
1012
1013         // height required to show track name
1014
1015         hSmall = 27;
1016 }
1017
1018 void
1019 TimeAxisView::show_name_label ()
1020 {
1021         if (!(name_packing & NameLabelPacked)) {
1022                 name_hbox.pack_start (name_label, true, true);
1023                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1024                 name_hbox.show ();
1025                 name_label.show ();
1026         }
1027 }
1028
1029 void
1030 TimeAxisView::show_name_entry ()
1031 {
1032         if (!(name_packing & NameEntryPacked)) {
1033                 name_hbox.pack_start (name_entry, true, true);
1034                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1035                 name_hbox.show ();
1036                 name_entry.show ();
1037         }
1038 }
1039
1040 void
1041 TimeAxisView::hide_name_label ()
1042 {
1043         if (name_packing & NameLabelPacked) {
1044                 name_hbox.remove (name_label);
1045                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1046         }
1047 }
1048
1049 void
1050 TimeAxisView::hide_name_entry ()
1051 {
1052         if (name_packing & NameEntryPacked) {
1053                 name_hbox.remove (name_entry);
1054                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1055         }
1056 }
1057
1058 void
1059 TimeAxisView::color_handler (ColorID id, uint32_t val)
1060 {
1061         switch (id) {
1062         case cSelectionRectFill:
1063                 break;
1064         case cSelectionRectOutline:
1065                 break;
1066         case cSelectionStartFill:
1067                 break;
1068         case cSelectionStartOutline:
1069                 break;
1070         case cSelectionEndFill:
1071                 break;
1072         case cSelectionEndOutline:
1073                 break;
1074         default:
1075                 break;
1076         }
1077 }
1078
1079 TimeAxisView*
1080 TimeAxisView::covers_y_position (double y)
1081 {
1082         if (hidden()) {
1083                 return 0;
1084         }
1085
1086         if (y_position <= y && y < (y_position + height)) {
1087                 return this;
1088         }
1089
1090         for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
1091                 TimeAxisView* tv;
1092
1093                 if ((tv = (*i)->covers_y_position (y)) != 0) {
1094                         return tv;
1095                 }
1096         }
1097
1098         return 0;
1099 }