gtk2_ardour/editor_canvas_events.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 <typeinfo>
  24
  25 #include "pbd/stacktrace.h"
  26
  27 #include "ardour/audioplaylist.h"
  28 #include "ardour/audioregion.h"
  29 #include "ardour/region_factory.h"
  30 #include "ardour/midi_region.h"
  31
  32 #include "editor.h"
  33 #include "keyboard.h"
  34 #include "public_editor.h"
  35 #include "audio_region_view.h"
  36 #include "audio_streamview.h"
  37 #include "canvas-noevent-text.h"
  38 #include "crossfade_view.h"
  39 #include "audio_time_axis.h"
  40 #include "region_gain_line.h"
  41 #include "automation_line.h"
  42 #include "automation_time_axis.h"
  43 #include "automation_line.h"
  44 #include "control_point.h"
  45 #include "canvas_impl.h"
  46 #include "simplerect.h"
  47 #include "editor_drag.h"
  48 #include "midi_time_axis.h"
  49 #include "editor_regions.h"
  50 #include "verbose_cursor.h"
  51
  52 #include "i18n.h"
  53
  54 using namespace std;
  55 using namespace ARDOUR;
  56 using namespace PBD;
  57 using namespace Gtk;
  58 using namespace ArdourCanvas;
  59
  60 using Gtkmm2ext::Keyboard;
  61
  62 bool
  63 Editor::track_canvas_scroll (GdkEventScroll* ev)
  64 {
  65         framepos_t xdelta;
  66         int direction = ev->direction;
  67
  68   retry:
  69         switch (direction) {
  70         case GDK_SCROLL_UP:
  71                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
  72                         temporal_zoom_step (false);
  73                         return true;
  74                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier)) {
  75                         direction = GDK_SCROLL_LEFT;
  76                         goto retry;
  77                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
  78                         if (!current_stepping_trackview) {
  79                                 step_timeout = Glib::signal_timeout().connect (sigc::mem_fun(*this, &Editor::track_height_step_timeout), 500);
  80                                 std::pair<TimeAxisView*, int> const p = trackview_by_y_position (ev->y + vertical_adjustment.get_value() - canvas_timebars_vsize);
  81                                 current_stepping_trackview = p.first;
  82                                 if (!current_stepping_trackview) {
  83                                         return false;
  84                                 }
  85                         }
  86                         last_track_height_step_timestamp = get_microseconds();
  87                         current_stepping_trackview->step_height (false);
  88                         return true;
  89                 } else {
  90                         scroll_tracks_up_line ();
  91                         return true;
  92                 }
  93                 break;
  94
  95         case GDK_SCROLL_DOWN:
  96                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
  97                         temporal_zoom_step (true);
  98                         return true;
  99                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier)) {
 100                         direction = GDK_SCROLL_RIGHT;
 101                         goto retry;
 102                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 103                         if (!current_stepping_trackview) {
 104                                 step_timeout = Glib::signal_timeout().connect (sigc::mem_fun(*this, &Editor::track_height_step_timeout), 500);
 105                                 std::pair<TimeAxisView*, int> const p = trackview_by_y_position (ev->y + vertical_adjustment.get_value() - canvas_timebars_vsize);
 106                                 current_stepping_trackview = p.first;
 107                                 if (!current_stepping_trackview) {
 108                                         return false;
 109                                 }
 110                         }
 111                         last_track_height_step_timestamp = get_microseconds();
 112                         current_stepping_trackview->step_height (true);
 113                         return true;
 114                 } else {
 115                         scroll_tracks_down_line ();
 116                         return true;
 117                 }
 118                 break;
 119
 120         case GDK_SCROLL_LEFT:
 121                 xdelta = (current_page_frames() / 8);
 122                 if (leftmost_frame > xdelta) {
 123                         reset_x_origin (leftmost_frame - xdelta);
 124                 } else {
 125                         reset_x_origin (0);
 126                 }
 127                 break;
 128
 129         case GDK_SCROLL_RIGHT:
 130                 xdelta = (current_page_frames() / 8);
 131                 if (max_framepos - xdelta > leftmost_frame) {
 132                         reset_x_origin (leftmost_frame + xdelta);
 133                 } else {
 134                         reset_x_origin (max_framepos - current_page_frames());
 135                 }
 136                 break;
 137
 138         default:
 139                 /* what? */
 140                 break;
 141         }
 142
 143         return false;
 144 }
 145
 146 bool
 147 Editor::track_canvas_scroll_event (GdkEventScroll *event)
 148 {
 149         track_canvas->grab_focus();
 150         return track_canvas_scroll (event);
 151 }
 152
 153 bool
 154 Editor::track_canvas_button_press_event (GdkEventButton */*event*/)
 155 {
 156         selection->clear ();
 157         track_canvas->grab_focus();
 158         return false;
 159 }
 160
 161 bool
 162 Editor::track_canvas_button_release_event (GdkEventButton *event)
 163 {
 164         if (_drags->active ()) {
 165                 _drags->end_grab ((GdkEvent*) event);
 166         }
 167         return false;
 168 }
 169
 170 bool
 171 Editor::track_canvas_motion_notify_event (GdkEventMotion */*event*/)
 172 {
 173         int x, y;
 174         /* keep those motion events coming */
 175         track_canvas->get_pointer (x, y);
 176         return false;
 177 }
 178
 179 bool
 180 Editor::track_canvas_motion (GdkEvent *ev)
 181 {
 182         if (_verbose_cursor->visible ()) {
 183                 _verbose_cursor->set_position (ev->motion.x + 10, ev->motion.y + 10);
 184         }
 185
 186         return false;
 187 }
 188
 189 bool
 190 Editor::typed_event (ArdourCanvas::Item* item, GdkEvent *event, ItemType type)
 191 {
 192         gint ret = FALSE;
 193
 194         switch (event->type) {
 195         case GDK_BUTTON_PRESS:
 196         case GDK_2BUTTON_PRESS:
 197         case GDK_3BUTTON_PRESS:
 198                 ret = button_press_handler (item, event, type);
 199                 break;
 200         case GDK_BUTTON_RELEASE:
 201                 ret = button_release_handler (item, event, type);
 202                 break;
 203         case GDK_MOTION_NOTIFY:
 204                 ret = motion_handler (item, event);
 205                 break;
 206
 207         case GDK_ENTER_NOTIFY:
 208                 ret = enter_handler (item, event, type);
 209                 break;
 210
 211         case GDK_LEAVE_NOTIFY:
 212                 ret = leave_handler (item, event, type);
 213                 break;
 214
 215         case GDK_KEY_PRESS:
 216                 ret = key_press_handler (item, event, type);
 217                 break;
 218
 219         case GDK_KEY_RELEASE:
 220                 ret = key_release_handler (item, event, type);
 221                 break;
 222
 223         default:
 224                 break;
 225         }
 226         return ret;
 227 }
 228
 229 bool
 230 Editor::canvas_region_view_event (GdkEvent *event, ArdourCanvas::Item* item, RegionView *rv)
 231 {
 232         bool ret = false;
 233
 234         if (!rv->sensitive ()) {
 235                 return false;
 236         }
 237
 238         switch (event->type) {
 239         case GDK_BUTTON_PRESS:
 240         case GDK_2BUTTON_PRESS:
 241         case GDK_3BUTTON_PRESS:
 242                 clicked_regionview = rv;
 243                 clicked_control_point = 0;
 244                 clicked_axisview = &rv->get_time_axis_view();
 245                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 246                 ret = button_press_handler (item, event, RegionItem);
 247                 break;
 248
 249         case GDK_BUTTON_RELEASE:
 250                 ret = button_release_handler (item, event, RegionItem);
 251                 break;
 252
 253         case GDK_MOTION_NOTIFY:
 254                 ret = motion_handler (item, event);
 255                 break;
 256
 257         case GDK_ENTER_NOTIFY:
 258                 set_entered_track (&rv->get_time_axis_view ());
 259                 set_entered_regionview (rv);
 260                 break;
 261
 262         case GDK_LEAVE_NOTIFY:
 263                 set_entered_track (0);
 264                 set_entered_regionview (0);
 265                 break;
 266
 267         default:
 268                 break;
 269         }
 270
 271         return ret;
 272 }
 273
 274 bool
 275 Editor::canvas_stream_view_event (GdkEvent *event, ArdourCanvas::Item* item, RouteTimeAxisView *tv)
 276 {
 277         bool ret = FALSE;
 278
 279         switch (event->type) {
 280         case GDK_BUTTON_PRESS:
 281         case GDK_2BUTTON_PRESS:
 282         case GDK_3BUTTON_PRESS:
 283                 clicked_regionview = 0;
 284                 clicked_control_point = 0;
 285                 clicked_axisview = tv;
 286                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 287                 ret = button_press_handler (item, event, StreamItem);
 288                 break;
 289
 290         case GDK_BUTTON_RELEASE:
 291                 ret = button_release_handler (item, event, StreamItem);
 292                 break;
 293
 294         case GDK_MOTION_NOTIFY:
 295                 ret = motion_handler (item, event);
 296                 break;
 297
 298         case GDK_ENTER_NOTIFY:
 299                 set_entered_track (tv);
 300                 break;
 301
 302         case GDK_LEAVE_NOTIFY:
 303                 set_entered_track (0);
 304                 break;
 305
 306         default:
 307                 break;
 308         }
 309
 310         return ret;
 311 }
 312
 313 bool
 314 Editor::canvas_automation_track_event (GdkEvent *event, ArdourCanvas::Item* item, AutomationTimeAxisView *atv)
 315 {
 316         bool ret = false;
 317
 318         switch (event->type) {
 319         case GDK_BUTTON_PRESS:
 320         case GDK_2BUTTON_PRESS:
 321         case GDK_3BUTTON_PRESS:
 322                 clicked_regionview = 0;
 323                 clicked_control_point = 0;
 324                 clicked_axisview = atv;
 325                 clicked_routeview = 0;
 326                 ret = button_press_handler (item, event, AutomationTrackItem);
 327                 break;
 328
 329         case GDK_BUTTON_RELEASE:
 330                 ret = button_release_handler (item, event, AutomationTrackItem);
 331                 break;
 332
 333         case GDK_MOTION_NOTIFY:
 334                 ret = motion_handler (item, event);
 335                 break;
 336
 337         case GDK_ENTER_NOTIFY:
 338                 ret = enter_handler (item, event, AutomationTrackItem);
 339                 break;
 340
 341         case GDK_LEAVE_NOTIFY:
 342                 ret = leave_handler (item, event, AutomationTrackItem);
 343                 break;
 344
 345         default:
 346                 break;
 347         }
 348
 349         return ret;
 350 }
 351
 352 bool
 353 Editor::canvas_fade_in_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv)
 354 {
 355         /* we handle only button 3 press/release events */
 356
 357         if (!rv->sensitive()) {
 358                 return false;
 359         }
 360
 361         switch (event->type) {
 362         case GDK_BUTTON_PRESS:
 363                 clicked_regionview = rv;
 364                 clicked_control_point = 0;
 365                 clicked_axisview = &rv->get_time_axis_view();
 366                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 367                 if (event->button.button == 3) {
 368                         return button_press_handler (item, event, FadeInItem);
 369                 }
 370                 break;
 371
 372         case GDK_BUTTON_RELEASE:
 373                 if (event->button.button == 3) {
 374                         return button_release_handler (item, event, FadeInItem);
 375                 }
 376                 break;
 377
 378         default:
 379                 break;
 380
 381         }
 382
 383         /* proxy for the regionview */
 384
 385         return canvas_region_view_event (event, rv->get_canvas_group(), rv);
 386 }
 387
 388 bool
 389 Editor::canvas_fade_in_handle_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv)
 390 {
 391         bool ret = false;
 392
 393         if (!rv->sensitive()) {
 394                 return false;
 395         }
 396
 397         switch (event->type) {
 398         case GDK_BUTTON_PRESS:
 399         case GDK_2BUTTON_PRESS:
 400         case GDK_3BUTTON_PRESS:
 401                 clicked_regionview = rv;
 402                 clicked_control_point = 0;
 403                 clicked_axisview = &rv->get_time_axis_view();
 404                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 405                 ret = button_press_handler (item, event, FadeInHandleItem);
 406                 break;
 407
 408         case GDK_BUTTON_RELEASE:
 409                 ret = button_release_handler (item, event, FadeInHandleItem);
 410                 break;
 411
 412         case GDK_MOTION_NOTIFY:
 413                 ret = motion_handler (item, event);
 414                 break;
 415
 416         case GDK_ENTER_NOTIFY:
 417                 set_entered_regionview (rv);
 418                 ret = enter_handler (item, event, FadeInHandleItem);
 419                 break;
 420
 421         case GDK_LEAVE_NOTIFY:
 422                 set_entered_regionview (0);
 423                 ret = leave_handler (item, event, FadeInHandleItem);
 424                 break;
 425
 426         default:
 427                 break;
 428         }
 429
 430         return ret;
 431 }
 432
 433 bool
 434 Editor::canvas_fade_out_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv)
 435 {
 436         /* we handle only button 3 press/release events */
 437
 438         if (!rv->sensitive()) {
 439                 return false;
 440         }
 441
 442         switch (event->type) {
 443         case GDK_BUTTON_PRESS:
 444                 clicked_regionview = rv;
 445                 clicked_control_point = 0;
 446                 clicked_axisview = &rv->get_time_axis_view();
 447                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 448                 if (event->button.button == 3) {
 449                         return button_press_handler (item, event, FadeOutItem);
 450                 }
 451                 break;
 452
 453         case GDK_BUTTON_RELEASE:
 454                 if (event->button.button == 3) {
 455                         return button_release_handler (item, event, FadeOutItem);
 456                 }
 457                 break;
 458
 459         default:
 460                 break;
 461
 462         }
 463
 464         /* proxy for the regionview */
 465
 466         return canvas_region_view_event (event, rv->get_canvas_group(), rv);
 467 }
 468
 469 bool
 470 Editor::canvas_fade_out_handle_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv)
 471 {
 472         bool ret = false;
 473
 474         if (!rv->sensitive()) {
 475                 return false;
 476         }
 477
 478         switch (event->type) {
 479         case GDK_BUTTON_PRESS:
 480         case GDK_2BUTTON_PRESS:
 481         case GDK_3BUTTON_PRESS:
 482                 clicked_regionview = rv;
 483                 clicked_control_point = 0;
 484                 clicked_axisview = &rv->get_time_axis_view();
 485                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 486                 ret = button_press_handler (item, event, FadeOutHandleItem);
 487                 break;
 488
 489         case GDK_BUTTON_RELEASE:
 490                 ret = button_release_handler (item, event, FadeOutHandleItem);
 491                 break;
 492
 493         case GDK_MOTION_NOTIFY:
 494                 ret = motion_handler (item, event);
 495                 break;
 496
 497         case GDK_ENTER_NOTIFY:
 498                 set_entered_regionview (rv);
 499                 ret = enter_handler (item, event, FadeOutHandleItem);
 500                 break;
 501
 502         case GDK_LEAVE_NOTIFY:
 503                 set_entered_regionview (0);
 504                 ret = leave_handler (item, event, FadeOutHandleItem);
 505                 break;
 506
 507         default:
 508                 break;
 509         }
 510
 511         return ret;
 512 }
 513
 514 struct DescendingRegionLayerSorter {
 515     bool operator()(boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
 516             return a->layer() > b->layer();
 517     }
 518 };
 519
 520 bool
 521 Editor::canvas_crossfade_view_event (GdkEvent* event, ArdourCanvas::Item* item, CrossfadeView* xfv)
 522 {
 523         /* we handle only button 3 press/release events */
 524
 525         switch (event->type) {
 526         case GDK_BUTTON_PRESS:
 527                 clicked_crossfadeview = xfv;
 528                 clicked_axisview = &clicked_crossfadeview->get_time_axis_view();
 529                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 530                 if (event->button.button == 3) {
 531                         return button_press_handler (item, event, CrossfadeViewItem);
 532                 }
 533                 break;
 534
 535         case GDK_BUTTON_RELEASE:
 536                 if (event->button.button == 3) {
 537                         bool ret = button_release_handler (item, event, CrossfadeViewItem);
 538                         return ret;
 539                 }
 540                 break;
 541
 542         default:
 543                 break;
 544
 545         }
 546
 547         /* XXX do not forward double clicks */
 548
 549         if (event->type == GDK_2BUTTON_PRESS) {
 550                 return false;
 551         }
 552
 553         /* proxy for an underlying regionview */
 554
 555         /* XXX really need to check if we are in the name highlight,
 556            and proxy to that when required.
 557
 558            XXX or in the trim rectangles
 559         */
 560
 561         TimeAxisView& tv (xfv->get_time_axis_view());
 562         AudioTimeAxisView* atv;
 563
 564         if ((atv = dynamic_cast<AudioTimeAxisView*>(&tv)) != 0) {
 565
 566                 if (atv->is_audio_track()) {
 567
 568                         boost::shared_ptr<AudioPlaylist> pl;
 569                         if ((pl = boost::dynamic_pointer_cast<AudioPlaylist> (atv->track()->playlist())) != 0) {
 570
 571                                 boost::shared_ptr<RegionList> rl = pl->regions_at (event_frame (event));
 572                                 if (!rl->empty()) {
 573
 574                                         if (atv->layer_display() == Overlaid) {
 575
 576                                                 /* we're in overlaid mode; proxy to the uppermost region view */
 577
 578                                                 DescendingRegionLayerSorter cmp;
 579                                                 rl->sort (cmp);
 580
 581                                                 RegionView* rv = atv->view()->find_view (rl->front());
 582
 583                                                 /* proxy */
 584                                                 return canvas_region_view_event (event, rv->get_canvas_group(), rv);
 585
 586                                         } else {
 587
 588                                                 /* we're in stacked mode; proxy to the region view under the mouse */
 589
 590                                                 double cx = 0;
 591                                                 double cy = 0;
 592                                                 switch (event->type) {
 593                                                 case GDK_BUTTON_PRESS:
 594                                                 case GDK_BUTTON_RELEASE:
 595                                                         cx = event->button.x;
 596                                                         cy = event->button.y;
 597                                                         break;
 598                                                 case GDK_MOTION_NOTIFY:
 599                                                         cx = event->motion.x;
 600                                                         cy = event->motion.y;
 601                                                         break;
 602                                                 case GDK_ENTER_NOTIFY:
 603                                                 case GDK_LEAVE_NOTIFY:
 604                                                         cx = event->crossing.x;
 605                                                         cy = event->crossing.y;
 606                                                         break;
 607                                                 default:
 608                                                         /* XXX: this may be wrong for some events */
 609                                                         cx = event->button.x;
 610                                                         cy = event->button.y;
 611                                                 }
 612
 613                                                 /* position of the event within the track */
 614                                                 atv->view()->canvas_item()->w2i (cx, cy);
 615
 616                                                 /* hence layer that we're over */
 617                                                 double const c = atv->view()->child_height ();
 618                                                 layer_t const l = pl->top_layer () + 1 - (cy / c);
 619
 620                                                 /* hence region */
 621                                                 RegionList::iterator i = rl->begin();
 622                                                 while (i != rl->end() && (*i)->layer() != l) {
 623                                                         ++i;
 624                                                 }
 625
 626                                                 if (i != rl->end()) {
 627                                                         RegionView* rv = atv->view()->find_view (*i);
 628
 629                                                         /* proxy */
 630                                                         return canvas_region_view_event (event, rv->get_canvas_group(), rv);
 631                                                 }
 632                                         }
 633                                 }
 634                         }
 635                 }
 636         }
 637
 638         return TRUE;
 639 }
 640
 641 bool
 642 Editor::canvas_control_point_event (GdkEvent *event, ArdourCanvas::Item* item, ControlPoint* cp)
 643 {
 644         switch (event->type) {
 645         case GDK_BUTTON_PRESS:
 646         case GDK_2BUTTON_PRESS:
 647         case GDK_3BUTTON_PRESS:
 648                 clicked_control_point = cp;
 649                 clicked_axisview = &cp->line().trackview;
 650                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 651                 clicked_regionview = 0;
 652                 break;
 653
 654         case GDK_SCROLL_UP:
 655                 break;
 656
 657         case GDK_SCROLL_DOWN:
 658                 break;
 659
 660         default:
 661                 break;
 662         }
 663
 664         return typed_event (item, event, ControlPointItem);
 665 }
 666
 667 bool
 668 Editor::canvas_line_event (GdkEvent *event, ArdourCanvas::Item* item, AutomationLine* al)
 669 {
 670         ItemType type;
 671
 672         if (dynamic_cast<AudioRegionGainLine*> (al) != 0) {
 673                 type = GainLineItem;
 674         } else {
 675                 type = AutomationLineItem;
 676         }
 677
 678         return typed_event (item, event, type);
 679 }
 680
 681 bool
 682 Editor::canvas_selection_rect_event (GdkEvent *event, ArdourCanvas::Item* item, SelectionRect* rect)
 683 {
 684         bool ret = false;
 685
 686         switch (event->type) {
 687         case GDK_BUTTON_PRESS:
 688         case GDK_2BUTTON_PRESS:
 689         case GDK_3BUTTON_PRESS:
 690                 clicked_selection = rect->id;
 691                 ret = button_press_handler (item, event, SelectionItem);
 692                 break;
 693         case GDK_BUTTON_RELEASE:
 694                 ret = button_release_handler (item, event, SelectionItem);
 695                 break;
 696         case GDK_MOTION_NOTIFY:
 697                 ret = motion_handler (item, event);
 698                 break;
 699                 /* Don't need these at the moment. */
 700         case GDK_ENTER_NOTIFY:
 701                 ret = enter_handler (item, event, SelectionItem);
 702                 break;
 703
 704         case GDK_LEAVE_NOTIFY:
 705                 ret = leave_handler (item, event, SelectionItem);
 706                 break;
 707
 708         default:
 709                 break;
 710         }
 711
 712         return ret;
 713 }
 714
 715 bool
 716 Editor::canvas_selection_start_trim_event (GdkEvent *event, ArdourCanvas::Item* item, SelectionRect* rect)
 717 {
 718         bool ret = false;
 719
 720         switch (event->type) {
 721         case GDK_BUTTON_PRESS:
 722         case GDK_2BUTTON_PRESS:
 723         case GDK_3BUTTON_PRESS:
 724                 clicked_selection = rect->id;
 725                 ret = button_press_handler (item, event, StartSelectionTrimItem);
 726                 break;
 727         case GDK_BUTTON_RELEASE:
 728                 ret = button_release_handler (item, event, StartSelectionTrimItem);
 729                 break;
 730         case GDK_MOTION_NOTIFY:
 731                 ret = motion_handler (item, event);
 732                 break;
 733         case GDK_ENTER_NOTIFY:
 734                 ret = enter_handler (item, event, StartSelectionTrimItem);
 735                 break;
 736
 737         case GDK_LEAVE_NOTIFY:
 738                 ret = leave_handler (item, event, StartSelectionTrimItem);
 739                 break;
 740
 741         default:
 742                 break;
 743         }
 744
 745         return ret;
 746 }
 747
 748 bool
 749 Editor::canvas_selection_end_trim_event (GdkEvent *event, ArdourCanvas::Item* item, SelectionRect* rect)
 750 {
 751         bool ret = false;
 752
 753         switch (event->type) {
 754         case GDK_BUTTON_PRESS:
 755         case GDK_2BUTTON_PRESS:
 756         case GDK_3BUTTON_PRESS:
 757                 clicked_selection = rect->id;
 758                 ret = button_press_handler (item, event, EndSelectionTrimItem);
 759                 break;
 760         case GDK_BUTTON_RELEASE:
 761                 ret = button_release_handler (item, event, EndSelectionTrimItem);
 762                 break;
 763         case GDK_MOTION_NOTIFY:
 764                 ret = motion_handler (item, event);
 765                 break;
 766         case GDK_ENTER_NOTIFY:
 767                 ret = enter_handler (item, event, EndSelectionTrimItem);
 768                 break;
 769
 770         case GDK_LEAVE_NOTIFY:
 771                 ret = leave_handler (item, event, EndSelectionTrimItem);
 772                 break;
 773
 774         default:
 775                 break;
 776         }
 777
 778         return ret;
 779 }
 780
 781 bool
 782 Editor::canvas_frame_handle_event (GdkEvent* event, ArdourCanvas::Item* item, RegionView* rv)
 783 {
 784         bool ret = false;
 785
 786         /* frame handles are not active when in internal edit mode, because actual notes
 787            might be in the area occupied by the handle - we want them to be editable as normal.
 788         */
 789
 790         if (internal_editing() || !rv->sensitive()) {
 791                 return false;
 792         }
 793
 794         /* NOTE: frame handles pretend to be the colored trim bar from an event handling
 795            perspective. XXX change this ??
 796         */
 797
 798         ItemType type;
 799
 800         if (item->get_data ("isleft")) {
 801                 type = LeftFrameHandle;
 802         } else {
 803                 type = RightFrameHandle;
 804         }
 805
 806         switch (event->type) {
 807         case GDK_BUTTON_PRESS:
 808         case GDK_2BUTTON_PRESS:
 809         case GDK_3BUTTON_PRESS:
 810                 clicked_regionview = rv;
 811                 clicked_control_point = 0;
 812                 clicked_axisview = &clicked_regionview->get_time_axis_view();
 813                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 814                 ret = button_press_handler (item, event, type);
 815                 break;
 816         case GDK_BUTTON_RELEASE:
 817                 ret = button_release_handler (item, event, type);
 818                 break;
 819         case GDK_MOTION_NOTIFY:
 820                 ret = motion_handler (item, event);
 821                 break;
 822         case GDK_ENTER_NOTIFY:
 823                 set_entered_regionview (rv);
 824                 ret = enter_handler (item, event, type);
 825                 break;
 826
 827         case GDK_LEAVE_NOTIFY:
 828                 set_entered_regionview (0);
 829                 ret = leave_handler (item, event, type);
 830                 break;
 831
 832         default:
 833                 break;
 834         }
 835
 836         return ret;
 837 }
 838
 839
 840 bool
 841 Editor::canvas_region_view_name_highlight_event (GdkEvent* event, ArdourCanvas::Item* item, RegionView* rv)
 842 {
 843         bool ret = false;
 844
 845         if (!rv->sensitive()) {
 846                 return false;
 847         }
 848
 849         switch (event->type) {
 850         case GDK_BUTTON_PRESS:
 851         case GDK_2BUTTON_PRESS:
 852         case GDK_3BUTTON_PRESS:
 853                 clicked_regionview = rv;
 854                 clicked_control_point = 0;
 855                 clicked_axisview = &clicked_regionview->get_time_axis_view();
 856                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 857                 ret = button_press_handler (item, event, RegionViewNameHighlight);
 858                 break;
 859         case GDK_BUTTON_RELEASE:
 860                 ret = button_release_handler (item, event, RegionViewNameHighlight);
 861                 break;
 862         case GDK_MOTION_NOTIFY:
 863                 motion_handler (item, event);
 864                 ret = true; // force this to avoid progagating the event into the regionview
 865                 break;
 866         case GDK_ENTER_NOTIFY:
 867                 set_entered_regionview (rv);
 868                 ret = enter_handler (item, event, RegionViewNameHighlight);
 869                 break;
 870
 871         case GDK_LEAVE_NOTIFY:
 872                 set_entered_regionview (0);
 873                 ret = leave_handler (item, event, RegionViewNameHighlight);
 874                 break;
 875
 876         default:
 877                 break;
 878         }
 879
 880         return ret;
 881 }
 882
 883 bool
 884 Editor::canvas_region_view_name_event (GdkEvent *event, ArdourCanvas::Item* item, RegionView* rv)
 885 {
 886         bool ret = false;
 887
 888         if (!rv->sensitive()) {
 889                 return false;
 890         }
 891
 892         switch (event->type) {
 893         case GDK_BUTTON_PRESS:
 894         case GDK_2BUTTON_PRESS:
 895         case GDK_3BUTTON_PRESS:
 896                 clicked_regionview = rv;
 897                 clicked_control_point = 0;
 898                 clicked_axisview = &clicked_regionview->get_time_axis_view();
 899                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 900                 ret = button_press_handler (item, event, RegionViewName);
 901                 break;
 902         case GDK_BUTTON_RELEASE:
 903                 ret = button_release_handler (item, event, RegionViewName);
 904                 break;
 905         case GDK_MOTION_NOTIFY:
 906                 ret = motion_handler (item, event);
 907                 break;
 908         case GDK_ENTER_NOTIFY:
 909                 set_entered_regionview (rv);
 910                 ret = enter_handler (item, event, RegionViewName);
 911                 break;
 912
 913         case GDK_LEAVE_NOTIFY:
 914                 set_entered_regionview (0);
 915                 ret = leave_handler (item, event, RegionViewName);
 916                 break;
 917
 918         default:
 919                 break;
 920         }
 921
 922         return ret;
 923 }
 924
 925 bool
 926 Editor::canvas_feature_line_event (GdkEvent *event, ArdourCanvas::Item* item, RegionView*)
 927 {
 928         bool ret = false;
 929
 930         switch (event->type) {
 931         case GDK_BUTTON_PRESS:
 932         case GDK_2BUTTON_PRESS:
 933         case GDK_3BUTTON_PRESS:
 934                 clicked_regionview = 0;
 935                 clicked_control_point = 0;
 936                 clicked_axisview = 0;
 937                 clicked_routeview = 0; //dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 938                 ret = button_press_handler (item, event, FeatureLineItem);
 939                 break;
 940
 941         case GDK_BUTTON_RELEASE:
 942                 ret = button_release_handler (item, event, FeatureLineItem);
 943                 break;
 944
 945         case GDK_MOTION_NOTIFY:
 946                 ret = motion_handler (item, event);
 947                 break;
 948
 949         case GDK_ENTER_NOTIFY:
 950                 ret = enter_handler (item, event, FeatureLineItem);
 951                 break;
 952
 953         case GDK_LEAVE_NOTIFY:
 954                 ret = leave_handler (item, event, FeatureLineItem);
 955                 break;
 956
 957         default:
 958                 break;
 959         }
 960
 961         return ret;
 962 }
 963
 964 bool
 965 Editor::canvas_marker_event (GdkEvent *event, ArdourCanvas::Item* item, Marker* /*marker*/)
 966 {
 967         return typed_event (item, event, MarkerItem);
 968 }
 969
 970 bool
 971 Editor::canvas_marker_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
 972 {
 973         return typed_event (item, event, MarkerBarItem);
 974 }
 975
 976 bool
 977 Editor::canvas_range_marker_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
 978 {
 979         return typed_event (item, event, RangeMarkerBarItem);
 980 }
 981
 982 bool
 983 Editor::canvas_transport_marker_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
 984 {
 985         return typed_event (item, event, TransportMarkerBarItem);
 986 }
 987
 988 bool
 989 Editor::canvas_cd_marker_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
 990 {
 991         return typed_event (item, event, CdMarkerBarItem);
 992 }
 993
 994 bool
 995 Editor::canvas_tempo_marker_event (GdkEvent *event, ArdourCanvas::Item* item, TempoMarker* /*marker*/)
 996 {
 997         return typed_event (item, event, TempoMarkerItem);
 998 }
 999
1000 bool
1001 Editor::canvas_meter_marker_event (GdkEvent *event, ArdourCanvas::Item* item, MeterMarker* /*marker*/)
1002 {
1003         return typed_event (item, event, MeterMarkerItem);
1004 }
1005
1006 bool
1007 Editor::canvas_tempo_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
1008 {
1009         return typed_event (item, event, TempoBarItem);
1010 }
1011
1012 bool
1013 Editor::canvas_meter_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
1014 {
1015         return typed_event (item, event, MeterBarItem);
1016 }
1017
1018 bool
1019 Editor::canvas_playhead_cursor_event (GdkEvent *event, ArdourCanvas::Item* item)
1020 {
1021         return typed_event (item, event, PlayheadCursorItem);
1022 }
1023
1024 bool
1025 Editor::canvas_zoom_rect_event (GdkEvent *event, ArdourCanvas::Item* item)
1026 {
1027         return typed_event (item, event, NoItem);
1028 }
1029
1030 bool
1031 Editor::canvas_note_event (GdkEvent *event, ArdourCanvas::Item* item)
1032 {
1033         if (!internal_editing()) {
1034                 return false;
1035         }
1036
1037         return typed_event (item, event, NoteItem);
1038 }
1039
1040 bool
1041 Editor::track_canvas_drag_motion (Glib::RefPtr<Gdk::DragContext> const & /*c*/, int x, int y, guint /*time*/)
1042 {
1043         double wx;
1044         double wy;
1045         track_canvas->window_to_world (x, y, wx, wy);
1046
1047         GdkEvent event;
1048         event.type = GDK_MOTION_NOTIFY;
1049         event.button.x = wx;
1050         event.button.y = wy;
1051         /* assume we're dragging with button 1 */
1052         event.motion.state = Gdk::BUTTON1_MASK;
1053
1054         if (!_drags->active ()) {
1055
1056                 double px;
1057                 double py;
1058                 framepos_t const pos = event_frame (&event, &px, &py);
1059
1060                 std::pair<TimeAxisView*, int> const tv = trackview_by_y_position (py);
1061                 if (tv.first == 0) {
1062                         return true;
1063                 }
1064
1065                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (tv.first);
1066                 if (rtav == 0 || !rtav->is_track ()) {
1067                         return true;
1068                 }
1069
1070                 boost::shared_ptr<Region> region = _regions->get_dragged_region ();
1071
1072                 if (!region) {
1073                         return true;
1074                 }
1075
1076                 boost::shared_ptr<Region> region_copy = RegionFactory::create (region);
1077
1078                 if (boost::dynamic_pointer_cast<AudioRegion> (region_copy) != 0 &&
1079                     dynamic_cast<AudioTimeAxisView*> (tv.first) == 0) {
1080
1081                         /* audio -> non-audio */
1082                         return true;
1083                 }
1084
1085                 if (boost::dynamic_pointer_cast<MidiRegion> (region_copy) == 0 &&
1086                     dynamic_cast<MidiTimeAxisView*> (tv.first) != 0) {
1087
1088                         /* MIDI -> non-MIDI */
1089                         return true;
1090                 }
1091
1092                 _drags->set (new RegionInsertDrag (this, region_copy, rtav, pos), &event);
1093         }
1094
1095         _drags->motion_handler (&event, false);
1096
1097         return true;
1098 }
1099
1100 bool
1101 Editor::key_press_handler (ArdourCanvas::Item*, GdkEvent*, ItemType)
1102 {
1103         return false;
1104 }
1105
1106 bool
1107 Editor::key_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType type)
1108 {
1109
1110         bool handled = false;
1111
1112         switch (type) {
1113         case TempoMarkerItem:
1114                 switch (event->key.keyval) {
1115                 case GDK_Delete:
1116                         remove_tempo_marker (item);
1117                         handled = true;
1118                         break;
1119                 default:
1120                         break;
1121                 }
1122                 break;
1123
1124         case MeterMarkerItem:
1125                 switch (event->key.keyval) {
1126                 case GDK_Delete:
1127                         remove_meter_marker (item);
1128                         handled = true;
1129                         break;
1130                 default:
1131                         break;
1132                 }
1133                 break;
1134
1135         default:
1136                 break;
1137         }
1138
1139         return handled;
1140 }