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/audio_track.h"
  28 #include "ardour/midi_track.h"
  29 #include "ardour/midi_region.h"
  30 #include "ardour/region_factory.h"
  31 #include "ardour/profile.h"
  32
  33 #include "canvas/canvas.h"
  34 #include "canvas/text.h"
  35 #include "canvas/scroll_group.h"
  36
  37 #include "editor.h"
  38 #include "keyboard.h"
  39 #include "public_editor.h"
  40 #include "audio_region_view.h"
  41 #include "audio_streamview.h"
  42 #include "audio_time_axis.h"
  43 #include "region_gain_line.h"
  44 #include "automation_line.h"
  45 #include "automation_time_axis.h"
  46 #include "automation_line.h"
  47 #include "control_point.h"
  48 #include "editor_drag.h"
  49 #include "midi_time_axis.h"
  50 #include "editor_regions.h"
  51 #include "ui_config.h"
  52 #include "verbose_cursor.h"
  53
  54 #include "pbd/i18n.h"
  55
  56 using namespace std;
  57 using namespace ARDOUR;
  58 using namespace PBD;
  59 using namespace Gtk;
  60 using namespace ArdourCanvas;
  61
  62 using Gtkmm2ext::Keyboard;
  63
  64 bool
  65 Editor::track_canvas_scroll (GdkEventScroll* ev)
  66 {
  67         int direction = ev->direction;
  68
  69         /* this event arrives without transformation by the canvas, so we have
  70          * to transform the coordinates to be able to look things up.
  71          */
  72
  73         Duple event_coords = _track_canvas->window_to_canvas (Duple (ev->x, ev->y));
  74
  75         switch (direction) {
  76         case GDK_SCROLL_UP:
  77                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ScrollZoomHorizontalModifier)) {
  78                         if (UIConfiguration::instance().get_use_mouse_position_as_zoom_focus_on_scroll()) {
  79                                 temporal_zoom_step_mouse_focus (false);
  80                         } else {
  81                                 temporal_zoom_step (false);
  82                         }
  83                         return true;
  84                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::ScrollHorizontalModifier)) {
  85                         scroll_left_step ();
  86                         return true;
  87                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::ScrollZoomVerticalModifier)) {
  88                         if (!current_stepping_trackview) {
  89                                 step_timeout = Glib::signal_timeout().connect (sigc::mem_fun(*this, &Editor::track_height_step_timeout), 500);
  90                                 std::pair<TimeAxisView*, int> const p = trackview_by_y_position (event_coords.y, false);
  91                                 current_stepping_trackview = p.first;
  92                                 if (!current_stepping_trackview) {
  93                                         return false;
  94                                 }
  95                         }
  96                         last_track_height_step_timestamp = get_microseconds();
  97                         current_stepping_trackview->step_height (false);
  98                         return true;
  99                 } else {
 100                         scroll_up_one_track ();
 101                         return true;
 102                 }
 103                 break;
 104
 105         case GDK_SCROLL_DOWN:
 106                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ScrollZoomHorizontalModifier)) {
 107                         if (UIConfiguration::instance().get_use_mouse_position_as_zoom_focus_on_scroll()) {
 108                                 temporal_zoom_step_mouse_focus (true);
 109                         } else {
 110                                 temporal_zoom_step (true);
 111                         }
 112                         return true;
 113                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::ScrollHorizontalModifier)) {
 114                         scroll_right_step ();
 115                         return true;
 116                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::ScrollZoomVerticalModifier)) {
 117                         if (!current_stepping_trackview) {
 118                                 step_timeout = Glib::signal_timeout().connect (sigc::mem_fun(*this, &Editor::track_height_step_timeout), 500);
 119                                 std::pair<TimeAxisView*, int> const p = trackview_by_y_position (event_coords.y, false);
 120                                 current_stepping_trackview = p.first;
 121                                 if (!current_stepping_trackview) {
 122                                         return false;
 123                                 }
 124                         }
 125                         last_track_height_step_timestamp = get_microseconds();
 126                         current_stepping_trackview->step_height (true);
 127                         return true;
 128                 } else {
 129                         scroll_down_one_track ();
 130                         return true;
 131                 }
 132                 break;
 133
 134         case GDK_SCROLL_LEFT:
 135                 scroll_left_step ();
 136                 return true;
 137                 break;
 138
 139         case GDK_SCROLL_RIGHT:
 140                 scroll_right_step ();
 141                 return true;
 142                 break;
 143
 144         default:
 145                 /* what? */
 146                 break;
 147         }
 148
 149         return false;
 150 }
 151
 152 bool
 153 Editor::canvas_scroll_event (GdkEventScroll *event, bool from_canvas)
 154 {
 155         if (from_canvas) {
 156                 boost::optional<ArdourCanvas::Rect> rulers = _time_markers_group->bounding_box();
 157                 if (rulers && rulers->contains (Duple (event->x, event->y))) {
 158                         return canvas_ruler_event ((GdkEvent*) event, timecode_ruler, TimecodeRulerItem);
 159                 }
 160         }
 161
 162         _track_canvas->grab_focus();
 163         return track_canvas_scroll (event);
 164 }
 165
 166 bool
 167 Editor::track_canvas_button_press_event (GdkEventButton *event)
 168 {
 169         _track_canvas->grab_focus();
 170         if (!Keyboard::is_context_menu_event (event)) {
 171                 begin_reversible_selection_op (X_("Clear Selection Click (track canvas)"));
 172                 selection->clear ();
 173                 commit_reversible_selection_op();
 174         }
 175         return false;
 176 }
 177
 178 bool
 179 Editor::track_canvas_button_release_event (GdkEventButton *event)
 180 {
 181         if (!Keyboard::is_context_menu_event (event)) {
 182                 if (_drags->active ()) {
 183                         _drags->end_grab ((GdkEvent*) event);
 184                 }
 185         }
 186         return false;
 187 }
 188
 189 bool
 190 Editor::track_canvas_motion_notify_event (GdkEventMotion */*event*/)
 191 {
 192         int x, y;
 193         /* keep those motion events coming */
 194         _track_canvas->get_pointer (x, y);
 195         return false;
 196 }
 197
 198 bool
 199 Editor::typed_event (ArdourCanvas::Item* item, GdkEvent *event, ItemType type)
 200 {
 201         if (!session () || session()->loading () || session()->deletion_in_progress ()) {
 202                 return false;
 203         }
 204
 205         gint ret = FALSE;
 206
 207         switch (event->type) {
 208         case GDK_BUTTON_PRESS:
 209         case GDK_2BUTTON_PRESS:
 210         case GDK_3BUTTON_PRESS:
 211                 ret = button_press_handler (item, event, type);
 212                 break;
 213         case GDK_BUTTON_RELEASE:
 214                 ret = button_release_handler (item, event, type);
 215                 break;
 216         case GDK_MOTION_NOTIFY:
 217                 ret = motion_handler (item, event);
 218                 break;
 219
 220         case GDK_ENTER_NOTIFY:
 221                 ret = enter_handler (item, event, type);
 222                 break;
 223
 224         case GDK_LEAVE_NOTIFY:
 225                 ret = leave_handler (item, event, type);
 226                 break;
 227
 228         case GDK_KEY_PRESS:
 229                 ret = key_press_handler (item, event, type);
 230                 break;
 231
 232         case GDK_KEY_RELEASE:
 233                 ret = key_release_handler (item, event, type);
 234                 break;
 235
 236         default:
 237                 break;
 238         }
 239         return ret;
 240 }
 241
 242 bool
 243 Editor::canvas_region_view_event (GdkEvent *event, ArdourCanvas::Item* item, RegionView *rv)
 244 {
 245         bool ret = false;
 246
 247         if (!rv->sensitive ()) {
 248                 return false;
 249         }
 250
 251         switch (event->type) {
 252         case GDK_BUTTON_PRESS:
 253         case GDK_2BUTTON_PRESS:
 254         case GDK_3BUTTON_PRESS:
 255                 clicked_regionview = rv;
 256                 clicked_control_point = 0;
 257                 clicked_axisview = &rv->get_time_axis_view();
 258                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 259                 ret = button_press_handler (item, event, RegionItem);
 260                 break;
 261
 262         case GDK_BUTTON_RELEASE:
 263                 ret = button_release_handler (item, event, RegionItem);
 264                 break;
 265
 266         case GDK_MOTION_NOTIFY:
 267                 ret = motion_handler (item, event);
 268                 break;
 269
 270         case GDK_ENTER_NOTIFY:
 271                 set_entered_regionview (rv);
 272                 ret = enter_handler (item, event, RegionItem);
 273                 break;
 274
 275         case GDK_LEAVE_NOTIFY:
 276                 if (event->crossing.detail != GDK_NOTIFY_INFERIOR) {
 277                         set_entered_regionview (0);
 278                         ret = leave_handler (item, event, RegionItem);
 279                 }
 280                 break;
 281
 282         default:
 283                 break;
 284         }
 285
 286         return ret;
 287 }
 288
 289 bool
 290 Editor::canvas_wave_view_event (GdkEvent *event, ArdourCanvas::Item* item, RegionView* rv)
 291 {
 292         /* we only care about enter events here, required for mouse/cursor
 293          * tracking. there is a non-linear (non-child/non-parent) relationship
 294          * between various components of a regionview and so when we leave one
 295          * of them (e.g. a trim handle) and enter another (e.g. the waveview)
 296          * no other items get notified. enter/leave handling does not propagate
 297          * in the same way as other events, so we need to catch this because
 298          * entering (and leaving) the waveview is equivalent to
 299          * entering/leaving the regionview (which is why it is passed in as a
 300          * third argument).
 301          *
 302          * And in fact, we really only care about enter events.
 303          */
 304
 305         bool ret = false;
 306
 307         if (!rv->sensitive ()) {
 308                 return false;
 309         }
 310
 311         switch (event->type) {
 312         case GDK_ENTER_NOTIFY:
 313                 set_entered_regionview (rv);
 314                 ret = enter_handler (item, event, WaveItem);
 315                 break;
 316
 317         default:
 318                 break;
 319         }
 320
 321         return ret;
 322 }
 323
 324
 325 bool
 326 Editor::canvas_stream_view_event (GdkEvent *event, ArdourCanvas::Item* item, RouteTimeAxisView *tv)
 327 {
 328         bool ret = FALSE;
 329
 330         switch (event->type) {
 331         case GDK_BUTTON_PRESS:
 332         case GDK_2BUTTON_PRESS:
 333         case GDK_3BUTTON_PRESS:
 334                 clicked_regionview = 0;
 335                 clicked_control_point = 0;
 336                 clicked_axisview = tv;
 337                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 338                 ret = button_press_handler (item, event, StreamItem);
 339                 break;
 340
 341         case GDK_BUTTON_RELEASE:
 342                 ret = button_release_handler (item, event, StreamItem);
 343                 break;
 344
 345         case GDK_MOTION_NOTIFY:
 346                 ret = motion_handler (item, event);
 347                 break;
 348
 349         case GDK_ENTER_NOTIFY:
 350                 set_entered_track (tv);
 351                 ret = enter_handler (item, event, StreamItem);
 352                 break;
 353
 354         case GDK_LEAVE_NOTIFY:
 355                 if (event->crossing.detail != GDK_NOTIFY_INFERIOR) {
 356                         set_entered_track (0);
 357                 }
 358                 ret = leave_handler (item, event, StreamItem);
 359                 break;
 360
 361         default:
 362                 break;
 363         }
 364
 365         return ret;
 366 }
 367
 368 bool
 369 Editor::canvas_automation_track_event (GdkEvent *event, ArdourCanvas::Item* item, AutomationTimeAxisView *atv)
 370 {
 371         bool ret = false;
 372
 373         switch (event->type) {
 374         case GDK_BUTTON_PRESS:
 375         case GDK_2BUTTON_PRESS:
 376         case GDK_3BUTTON_PRESS:
 377                 clicked_regionview = 0;
 378                 clicked_control_point = 0;
 379                 clicked_axisview = atv;
 380                 clicked_routeview = 0;
 381                 ret = button_press_handler (item, event, AutomationTrackItem);
 382                 break;
 383
 384         case GDK_BUTTON_RELEASE:
 385                 ret = button_release_handler (item, event, AutomationTrackItem);
 386                 break;
 387
 388         case GDK_MOTION_NOTIFY:
 389                 ret = motion_handler (item, event);
 390                 break;
 391
 392         case GDK_ENTER_NOTIFY:
 393                 ret = enter_handler (item, event, AutomationTrackItem);
 394                 break;
 395
 396         case GDK_LEAVE_NOTIFY:
 397                 ret = leave_handler (item, event, AutomationTrackItem);
 398                 break;
 399
 400         default:
 401                 break;
 402         }
 403
 404         return ret;
 405 }
 406
 407 bool
 408 Editor::canvas_start_xfade_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv)
 409 {
 410         if (!rv->sensitive()) {
 411                 return false;
 412         }
 413
 414         switch (event->type) {
 415         case GDK_BUTTON_PRESS:
 416                 clicked_regionview = rv;
 417                 clicked_control_point = 0;
 418                 clicked_axisview = &rv->get_time_axis_view();
 419                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 420                 if (event->button.button == 3) {
 421                         return button_press_handler (item, event, StartCrossFadeItem);
 422                 }
 423                 break;
 424
 425         case GDK_BUTTON_RELEASE:
 426                 if (event->button.button == 3) {
 427                         return button_release_handler (item, event, StartCrossFadeItem);
 428                 }
 429                 break;
 430
 431         default:
 432                 break;
 433
 434         }
 435
 436         /* In Mixbus, the crossfade area is used to trim the region while leaving the fade anchor intact (see preserve_fade_anchor)*/
 437         /* however in A3 this feature is unfinished, and it might be better to do it with a modifier-trim instead, anyway */
 438         /* if we return RegionItem here then we avoid the issue until it is resolved later */
 439         return typed_event (item, event, RegionItem); // StartCrossFadeItem);
 440 }
 441
 442 bool
 443 Editor::canvas_end_xfade_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv)
 444 {
 445         if (!rv->sensitive()) {
 446                 return false;
 447         }
 448
 449         switch (event->type) {
 450         case GDK_BUTTON_PRESS:
 451                 clicked_regionview = rv;
 452                 clicked_control_point = 0;
 453                 clicked_axisview = &rv->get_time_axis_view();
 454                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 455                 if (event->button.button == 3) {
 456                         return button_press_handler (item, event, EndCrossFadeItem);
 457                 }
 458                 break;
 459
 460         case GDK_BUTTON_RELEASE:
 461                 if (event->button.button == 3) {
 462                         return button_release_handler (item, event, EndCrossFadeItem);
 463                 }
 464                 break;
 465
 466         default:
 467                 break;
 468
 469         }
 470
 471         /* In Mixbus, the crossfade area is used to trim the region while leaving the fade anchor intact (see preserve_fade_anchor)*/
 472         /* however in A3 this feature is unfinished, and it might be better to do it with a modifier-trim instead, anyway */
 473         /* if we return RegionItem here then we avoid the issue until it is resolved later */
 474         return typed_event (item, event, RegionItem); // EndCrossFadeItem);
 475 }
 476
 477 bool
 478 Editor::canvas_fade_in_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv)
 479 {
 480         /* we handle only button 3 press/release events */
 481
 482         if (!rv->sensitive()) {
 483                 return false;
 484         }
 485
 486         switch (event->type) {
 487         case GDK_BUTTON_PRESS:
 488                 clicked_regionview = rv;
 489                 clicked_control_point = 0;
 490                 clicked_axisview = &rv->get_time_axis_view();
 491                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 492                 if (event->button.button == 3) {
 493                         return button_press_handler (item, event, FadeInItem);
 494                 }
 495                 break;
 496
 497         case GDK_BUTTON_RELEASE:
 498                 if (event->button.button == 3) {
 499                         return button_release_handler (item, event, FadeInItem);
 500                 }
 501                 break;
 502
 503         default:
 504                 break;
 505
 506         }
 507
 508         /* proxy for the regionview, except enter/leave events */
 509
 510         if (event->type == GDK_ENTER_NOTIFY || event->type == GDK_LEAVE_NOTIFY) {
 511                 return true;
 512         } else {
 513                 return canvas_region_view_event (event, rv->get_canvas_group(), rv);
 514         }
 515 }
 516
 517 bool
 518 Editor::canvas_fade_in_handle_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv, bool trim)
 519 {
 520         bool ret = false;
 521
 522         if (!rv->sensitive()) {
 523                 return false;
 524         }
 525
 526         switch (event->type) {
 527         case GDK_BUTTON_PRESS:
 528         case GDK_2BUTTON_PRESS:
 529         case GDK_3BUTTON_PRESS:
 530                 clicked_regionview = rv;
 531                 clicked_control_point = 0;
 532                 clicked_axisview = &rv->get_time_axis_view();
 533                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 534                 ret = button_press_handler (item, event, trim ? FadeInTrimHandleItem : FadeInHandleItem);
 535                 break;
 536
 537         case GDK_BUTTON_RELEASE:
 538                 ret = button_release_handler (item, event, trim ? FadeInTrimHandleItem : FadeInHandleItem);
 539                 break;
 540
 541         case GDK_MOTION_NOTIFY:
 542                 ret = motion_handler (item, event);
 543                 break;
 544
 545         case GDK_ENTER_NOTIFY:
 546                 ret = enter_handler (item, event, trim ? FadeInTrimHandleItem : FadeInHandleItem);
 547                 break;
 548
 549         case GDK_LEAVE_NOTIFY:
 550                 ret = leave_handler (item, event, trim ? FadeInTrimHandleItem : FadeInHandleItem);
 551                 break;
 552
 553         default:
 554                 break;
 555         }
 556
 557         return ret;
 558 }
 559
 560 bool
 561 Editor::canvas_fade_out_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv)
 562 {
 563         /* we handle only button 3 press/release events */
 564
 565         if (!rv->sensitive()) {
 566                 return false;
 567         }
 568
 569         switch (event->type) {
 570         case GDK_BUTTON_PRESS:
 571                 clicked_regionview = rv;
 572                 clicked_control_point = 0;
 573                 clicked_axisview = &rv->get_time_axis_view();
 574                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 575                 if (event->button.button == 3) {
 576                         return button_press_handler (item, event, FadeOutItem);
 577                 }
 578                 break;
 579
 580         case GDK_BUTTON_RELEASE:
 581                 if (event->button.button == 3) {
 582                         return button_release_handler (item, event, FadeOutItem);
 583                 }
 584                 break;
 585
 586         default:
 587                 break;
 588
 589         }
 590
 591         /* proxy for the regionview, except enter/leave events */
 592
 593         if (event->type == GDK_ENTER_NOTIFY || event->type == GDK_LEAVE_NOTIFY) {
 594                 return true;
 595         } else {
 596                 return canvas_region_view_event (event, rv->get_canvas_group(), rv);
 597         }
 598 }
 599
 600 bool
 601 Editor::canvas_fade_out_handle_event (GdkEvent *event, ArdourCanvas::Item* item, AudioRegionView *rv, bool trim)
 602 {
 603         bool ret = false;
 604
 605         if (!rv->sensitive()) {
 606                 return false;
 607         }
 608
 609         switch (event->type) {
 610         case GDK_BUTTON_PRESS:
 611         case GDK_2BUTTON_PRESS:
 612         case GDK_3BUTTON_PRESS:
 613                 clicked_regionview = rv;
 614                 clicked_control_point = 0;
 615                 clicked_axisview = &rv->get_time_axis_view();
 616                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 617                 ret = button_press_handler (item, event, trim ? FadeOutTrimHandleItem : FadeOutHandleItem);
 618                 break;
 619
 620         case GDK_BUTTON_RELEASE:
 621                 ret = button_release_handler (item, event, trim ? FadeOutTrimHandleItem : FadeOutHandleItem);
 622                 break;
 623
 624         case GDK_MOTION_NOTIFY:
 625                 ret = motion_handler (item, event);
 626                 break;
 627
 628         case GDK_ENTER_NOTIFY:
 629                 ret = enter_handler (item, event, trim ? FadeOutTrimHandleItem : FadeOutHandleItem);
 630                 break;
 631
 632         case GDK_LEAVE_NOTIFY:
 633                 ret = leave_handler (item, event, trim ? FadeOutTrimHandleItem : FadeOutHandleItem);
 634                 break;
 635
 636         default:
 637                 break;
 638         }
 639
 640         return ret;
 641 }
 642
 643 struct DescendingRegionLayerSorter {
 644         bool operator()(boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
 645                 return a->layer() > b->layer();
 646         }
 647 };
 648
 649 bool
 650 Editor::canvas_control_point_event (GdkEvent *event, ArdourCanvas::Item* item, ControlPoint* cp)
 651 {
 652         switch (event->type) {
 653         case GDK_BUTTON_PRESS:
 654         case GDK_2BUTTON_PRESS:
 655         case GDK_3BUTTON_PRESS:
 656                 clicked_control_point = cp;
 657                 clicked_axisview = &cp->line().trackview;
 658                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 659                 clicked_regionview = 0;
 660                 break;
 661
 662         case GDK_SCROLL_UP:
 663                 break;
 664
 665         case GDK_SCROLL_DOWN:
 666                 break;
 667
 668         default:
 669                 break;
 670         }
 671
 672         return typed_event (item, event, ControlPointItem);
 673 }
 674
 675 bool
 676 Editor::canvas_line_event (GdkEvent *event, ArdourCanvas::Item* item, AutomationLine* al)
 677 {
 678         ItemType type;
 679         AudioRegionGainLine* gl;
 680         if ((gl = dynamic_cast<AudioRegionGainLine*> (al)) != 0) {
 681                 type = GainLineItem;
 682                 if (event->type == GDK_BUTTON_PRESS) {
 683                         clicked_regionview = &gl->region_view ();
 684                 }
 685         } else {
 686                 type = AutomationLineItem;
 687                 if (event->type == GDK_BUTTON_PRESS) {
 688                         clicked_regionview = 0;
 689                 }
 690         }
 691
 692         clicked_control_point = 0;
 693         clicked_axisview = &al->trackview;
 694         clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 695
 696         return typed_event (item, event, type);
 697 }
 698
 699 bool
 700 Editor::canvas_selection_rect_event (GdkEvent *event, ArdourCanvas::Item* item, SelectionRect* rect)
 701 {
 702         bool ret = false;
 703
 704         switch (event->type) {
 705         case GDK_BUTTON_PRESS:
 706         case GDK_2BUTTON_PRESS:
 707         case GDK_3BUTTON_PRESS:
 708                 clicked_selection = rect->id;
 709                 ret = button_press_handler (item, event, SelectionItem);
 710                 break;
 711         case GDK_BUTTON_RELEASE:
 712                 ret = button_release_handler (item, event, SelectionItem);
 713                 break;
 714         case GDK_MOTION_NOTIFY:
 715                 ret = motion_handler (item, event);
 716                 break;
 717                 /* Don't need these at the moment. */
 718         case GDK_ENTER_NOTIFY:
 719                 ret = enter_handler (item, event, SelectionItem);
 720                 break;
 721
 722         case GDK_LEAVE_NOTIFY:
 723                 ret = leave_handler (item, event, SelectionItem);
 724                 break;
 725
 726         default:
 727                 break;
 728         }
 729
 730         return ret;
 731 }
 732
 733 bool
 734 Editor::canvas_selection_start_trim_event (GdkEvent *event, ArdourCanvas::Item* item, SelectionRect* rect)
 735 {
 736         bool ret = false;
 737
 738         switch (event->type) {
 739         case GDK_BUTTON_PRESS:
 740         case GDK_2BUTTON_PRESS:
 741         case GDK_3BUTTON_PRESS:
 742                 clicked_selection = rect->id;
 743                 ret = button_press_handler (item, event, StartSelectionTrimItem);
 744                 break;
 745         case GDK_BUTTON_RELEASE:
 746                 ret = button_release_handler (item, event, StartSelectionTrimItem);
 747                 break;
 748         case GDK_MOTION_NOTIFY:
 749                 ret = motion_handler (item, event);
 750                 break;
 751         case GDK_ENTER_NOTIFY:
 752                 ret = enter_handler (item, event, StartSelectionTrimItem);
 753                 break;
 754
 755         case GDK_LEAVE_NOTIFY:
 756                 ret = leave_handler (item, event, StartSelectionTrimItem);
 757                 break;
 758
 759         default:
 760                 break;
 761         }
 762
 763         return ret;
 764 }
 765
 766 bool
 767 Editor::canvas_selection_end_trim_event (GdkEvent *event, ArdourCanvas::Item* item, SelectionRect* rect)
 768 {
 769         bool ret = false;
 770
 771         switch (event->type) {
 772         case GDK_BUTTON_PRESS:
 773         case GDK_2BUTTON_PRESS:
 774         case GDK_3BUTTON_PRESS:
 775                 clicked_selection = rect->id;
 776                 ret = button_press_handler (item, event, EndSelectionTrimItem);
 777                 break;
 778         case GDK_BUTTON_RELEASE:
 779                 ret = button_release_handler (item, event, EndSelectionTrimItem);
 780                 break;
 781         case GDK_MOTION_NOTIFY:
 782                 ret = motion_handler (item, event);
 783                 break;
 784         case GDK_ENTER_NOTIFY:
 785                 ret = enter_handler (item, event, EndSelectionTrimItem);
 786                 break;
 787
 788         case GDK_LEAVE_NOTIFY:
 789                 ret = leave_handler (item, event, EndSelectionTrimItem);
 790                 break;
 791
 792         default:
 793                 break;
 794         }
 795
 796         return ret;
 797 }
 798
 799 bool
 800 Editor::canvas_sample_handle_event (GdkEvent* event, ArdourCanvas::Item* item, RegionView* rv)
 801 {
 802         bool ret = false;
 803
 804         /* sample handles are not active when in internal edit mode, because actual notes
 805            might be in the area occupied by the handle - we want them to be editable as normal.
 806         */
 807
 808         if (internal_editing() || !rv->sensitive()) {
 809                 return false;
 810         }
 811
 812         /* NOTE: sample handles pretend to be the colored trim bar from an event handling
 813            perspective. XXX change this ??
 814         */
 815
 816         ItemType type;
 817
 818         if (item->get_data ("isleft")) {
 819                 type = LeftFrameHandle;
 820         } else {
 821                 type = RightFrameHandle;
 822         }
 823
 824         switch (event->type) {
 825         case GDK_BUTTON_PRESS:
 826         case GDK_2BUTTON_PRESS:
 827         case GDK_3BUTTON_PRESS:
 828                 clicked_regionview = rv;
 829                 clicked_control_point = 0;
 830                 clicked_axisview = &clicked_regionview->get_time_axis_view();
 831                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 832                 ret = button_press_handler (item, event, type);
 833                 break;
 834         case GDK_BUTTON_RELEASE:
 835                 ret = button_release_handler (item, event, type);
 836                 break;
 837         case GDK_MOTION_NOTIFY:
 838                 ret = motion_handler (item, event);
 839                 break;
 840         case GDK_ENTER_NOTIFY:
 841                 ret = enter_handler (item, event, type);
 842                 break;
 843
 844         case GDK_LEAVE_NOTIFY:
 845                 ret = leave_handler (item, event, type);
 846                 break;
 847
 848         default:
 849                 break;
 850         }
 851
 852         return ret;
 853 }
 854
 855
 856 bool
 857 Editor::canvas_region_view_name_highlight_event (GdkEvent* event, ArdourCanvas::Item* item, RegionView* rv)
 858 {
 859         bool ret = false;
 860
 861         if (!rv->sensitive()) {
 862                 return false;
 863         }
 864
 865         switch (event->type) {
 866         case GDK_BUTTON_PRESS:
 867         case GDK_2BUTTON_PRESS:
 868         case GDK_3BUTTON_PRESS:
 869                 clicked_regionview = rv;
 870                 clicked_control_point = 0;
 871                 clicked_axisview = &clicked_regionview->get_time_axis_view();
 872                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 873                 ret = button_press_handler (item, event, RegionViewNameHighlight);
 874                 break;
 875         case GDK_BUTTON_RELEASE:
 876                 ret = button_release_handler (item, event, RegionViewNameHighlight);
 877                 break;
 878         case GDK_MOTION_NOTIFY:
 879                 motion_handler (item, event);
 880                 ret = true; // force this to avoid progagating the event into the regionview
 881                 break;
 882         case GDK_ENTER_NOTIFY:
 883                 ret = enter_handler (item, event, RegionViewNameHighlight);
 884                 break;
 885
 886         case GDK_LEAVE_NOTIFY:
 887                 ret = leave_handler (item, event, RegionViewNameHighlight);
 888                 break;
 889
 890         default:
 891                 break;
 892         }
 893
 894         return ret;
 895 }
 896
 897 bool
 898 Editor::canvas_region_view_name_event (GdkEvent *event, ArdourCanvas::Item* item, RegionView* rv)
 899 {
 900         bool ret = false;
 901
 902         if (!rv->sensitive()) {
 903                 return false;
 904         }
 905
 906         switch (event->type) {
 907         case GDK_BUTTON_PRESS:
 908         case GDK_2BUTTON_PRESS:
 909         case GDK_3BUTTON_PRESS:
 910                 clicked_regionview = rv;
 911                 clicked_control_point = 0;
 912                 clicked_axisview = &clicked_regionview->get_time_axis_view();
 913                 clicked_routeview = dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 914                 ret = button_press_handler (item, event, RegionViewName);
 915                 break;
 916         case GDK_BUTTON_RELEASE:
 917                 ret = button_release_handler (item, event, RegionViewName);
 918                 break;
 919         case GDK_MOTION_NOTIFY:
 920                 ret = motion_handler (item, event);
 921                 break;
 922         case GDK_ENTER_NOTIFY:
 923                 ret = enter_handler (item, event, RegionViewName);
 924                 break;
 925
 926         case GDK_LEAVE_NOTIFY:
 927                 ret = leave_handler (item, event, RegionViewName);
 928                 break;
 929
 930         default:
 931                 break;
 932         }
 933
 934         return ret;
 935 }
 936
 937 bool
 938 Editor::canvas_feature_line_event (GdkEvent *event, ArdourCanvas::Item* item, RegionView*)
 939 {
 940         bool ret = false;
 941
 942         switch (event->type) {
 943         case GDK_BUTTON_PRESS:
 944         case GDK_2BUTTON_PRESS:
 945         case GDK_3BUTTON_PRESS:
 946                 clicked_regionview = 0;
 947                 clicked_control_point = 0;
 948                 clicked_axisview = 0;
 949                 clicked_routeview = 0; //dynamic_cast<RouteTimeAxisView*>(clicked_axisview);
 950                 ret = button_press_handler (item, event, FeatureLineItem);
 951                 break;
 952
 953         case GDK_BUTTON_RELEASE:
 954                 ret = button_release_handler (item, event, FeatureLineItem);
 955                 break;
 956
 957         case GDK_MOTION_NOTIFY:
 958                 ret = motion_handler (item, event);
 959                 break;
 960
 961         case GDK_ENTER_NOTIFY:
 962                 ret = enter_handler (item, event, FeatureLineItem);
 963                 break;
 964
 965         case GDK_LEAVE_NOTIFY:
 966                 ret = leave_handler (item, event, FeatureLineItem);
 967                 break;
 968
 969         default:
 970                 break;
 971         }
 972
 973         return ret;
 974 }
 975
 976 bool
 977 Editor::canvas_marker_event (GdkEvent *event, ArdourCanvas::Item* item, ArdourMarker* /*marker*/)
 978 {
 979         return typed_event (item, event, MarkerItem);
 980 }
 981
 982 bool
 983 Editor::canvas_marker_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
 984 {
 985         return typed_event (item, event, MarkerBarItem);
 986 }
 987
 988 bool
 989 Editor::canvas_range_marker_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
 990 {
 991         return typed_event (item, event, RangeMarkerBarItem);
 992 }
 993
 994 bool
 995 Editor::canvas_transport_marker_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
 996 {
 997         return typed_event (item, event, TransportMarkerBarItem);
 998 }
 999
1000 bool
1001 Editor::canvas_cd_marker_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
1002 {
1003         return typed_event (item, event, CdMarkerBarItem);
1004 }
1005
1006 bool
1007 Editor::canvas_videotl_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
1008 {
1009         return typed_event (item, event, VideoBarItem);
1010 }
1011
1012 bool
1013 Editor::canvas_tempo_marker_event (GdkEvent *event, ArdourCanvas::Item* item, TempoMarker* marker)
1014 {
1015         return typed_event (item, event, TempoMarkerItem);
1016 }
1017
1018 bool
1019 Editor::canvas_tempo_curve_event (GdkEvent *event, ArdourCanvas::Item* item, TempoCurve* /*marker*/)
1020 {
1021         return typed_event (item, event, TempoCurveItem);
1022 }
1023
1024 bool
1025 Editor::canvas_meter_marker_event (GdkEvent *event, ArdourCanvas::Item* item, MeterMarker* /*marker*/)
1026 {
1027         return typed_event (item, event, MeterMarkerItem);
1028 }
1029
1030 bool
1031 Editor::canvas_ruler_event (GdkEvent *event, ArdourCanvas::Item* item, ItemType type)
1032 {
1033         bool handled = false;
1034
1035         if (event->type == GDK_SCROLL) {
1036
1037                 /* scroll events in the rulers are handled a little differently from
1038                    scrolling elsewhere in the canvas.
1039                 */
1040
1041                 switch (event->scroll.direction) {
1042                 case GDK_SCROLL_UP:
1043                         if (Keyboard::modifier_state_equals(event->scroll.state,
1044                                                             Keyboard::ScrollHorizontalModifier)) {
1045                                 scroll_left_step ();
1046                         } else if (UIConfiguration::instance().get_use_mouse_position_as_zoom_focus_on_scroll()) {
1047                                 temporal_zoom_step_mouse_focus (false);
1048                         } else {
1049                                 temporal_zoom_step (false);
1050                         }
1051                         handled = true;
1052                         break;
1053
1054                 case GDK_SCROLL_DOWN:
1055                         if (Keyboard::modifier_state_equals(event->scroll.state,
1056                                                             Keyboard::ScrollHorizontalModifier)) {
1057                                 scroll_right_step ();
1058                         } else if (UIConfiguration::instance().get_use_mouse_position_as_zoom_focus_on_scroll()) {
1059                                 temporal_zoom_step_mouse_focus (true);
1060                         } else {
1061                                 temporal_zoom_step (true);
1062                         }
1063                         handled = true;
1064                         break;
1065
1066                 case GDK_SCROLL_LEFT:
1067                         scroll_left_half_page ();
1068                         handled = true;
1069                         break;
1070
1071                 case GDK_SCROLL_RIGHT:
1072                         scroll_right_half_page ();
1073                         handled = true;
1074                         break;
1075
1076                 default:
1077                         /* what? */
1078                         break;
1079                 }
1080                 return handled;
1081         }
1082
1083         return typed_event (item, event, type);
1084 }
1085
1086 bool
1087 Editor::canvas_tempo_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
1088 {
1089         return typed_event (item, event, TempoBarItem);
1090 }
1091
1092 bool
1093 Editor::canvas_meter_bar_event (GdkEvent *event, ArdourCanvas::Item* item)
1094 {
1095         return typed_event (item, event, MeterBarItem);
1096 }
1097
1098 bool
1099 Editor::canvas_playhead_cursor_event (GdkEvent *event, ArdourCanvas::Item* item)
1100 {
1101         return typed_event (item, event, PlayheadCursorItem);
1102 }
1103
1104 bool
1105 Editor::canvas_note_event (GdkEvent *event, ArdourCanvas::Item* item)
1106 {
1107         if (!internal_editing()) {
1108                 return false;
1109         }
1110
1111         return typed_event (item, event, NoteItem);
1112 }
1113
1114 bool
1115 Editor::canvas_drop_zone_event (GdkEvent* event)
1116 {
1117         GdkEventScroll scroll;
1118         ArdourCanvas::Duple winpos;
1119
1120         switch (event->type) {
1121         case GDK_BUTTON_RELEASE:
1122                 if (event->button.button == 1) {
1123                         begin_reversible_selection_op (X_("Nowhere Click"));
1124                         selection->clear_objects ();
1125                         selection->clear_tracks ();
1126                         commit_reversible_selection_op ();
1127                 }
1128                 break;
1129
1130         case GDK_SCROLL:
1131                 /* convert coordinates back into window space so that
1132                    we can just call canvas_scroll_event().
1133                 */
1134                 winpos = _track_canvas->canvas_to_window (Duple (event->scroll.x, event->scroll.y));
1135                 scroll = event->scroll;
1136                 scroll.x = winpos.x;
1137                 scroll.y = winpos.y;
1138                 return canvas_scroll_event (&scroll, true);
1139                 break;
1140
1141         case GDK_ENTER_NOTIFY:
1142                 return typed_event (_canvas_drop_zone, event, DropZoneItem);
1143
1144         case GDK_LEAVE_NOTIFY:
1145                 return typed_event (_canvas_drop_zone, event, DropZoneItem);
1146
1147         default:
1148                 break;
1149         }
1150
1151         return true;
1152 }
1153
1154 bool
1155 Editor::track_canvas_drag_motion (Glib::RefPtr<Gdk::DragContext> const& context, int x, int y, guint time)
1156 {
1157         boost::shared_ptr<Region> region;
1158         boost::shared_ptr<Region> region_copy;
1159         RouteTimeAxisView* rtav;
1160         GdkEvent event;
1161         double px;
1162         double py;
1163
1164         string target = _track_canvas->drag_dest_find_target (context, _track_canvas->drag_dest_get_target_list());
1165
1166         if (target.empty()) {
1167                 return false;
1168         }
1169
1170         event.type = GDK_MOTION_NOTIFY;
1171         event.button.x = x;
1172         event.button.y = y;
1173         /* assume we're dragging with button 1 */
1174         event.motion.state = Gdk::BUTTON1_MASK;
1175
1176         (void) window_event_sample (&event, &px, &py);
1177
1178         std::pair<TimeAxisView*, int> const tv = trackview_by_y_position (py, false);
1179         bool can_drop = false;
1180
1181         if (tv.first != 0) {
1182
1183                 /* over a time axis view of some kind */
1184
1185                 rtav = dynamic_cast<RouteTimeAxisView*> (tv.first);
1186
1187                 if (rtav != 0 && rtav->is_track ()) {
1188                         /* over a track, not a bus */
1189                         can_drop = true;
1190                 }
1191
1192
1193         } else {
1194                 /* not over a time axis view, so drop is possible */
1195                 can_drop = true;
1196         }
1197
1198         if (can_drop) {
1199                 region = _regions->get_dragged_region ();
1200
1201                 if (region) {
1202
1203                         if (tv.first == 0
1204                             && (
1205                                 boost::dynamic_pointer_cast<AudioRegion> (region) != 0 ||
1206                                 boost::dynamic_pointer_cast<MidiRegion> (region) != 0
1207                                )
1208                            )
1209                         {
1210                                 /* drop to drop-zone */
1211                                 context->drag_status (context->get_suggested_action(), time);
1212                                 return true;
1213                         }
1214
1215                         if ((boost::dynamic_pointer_cast<AudioRegion> (region) != 0 &&
1216                              dynamic_cast<AudioTimeAxisView*> (tv.first) != 0) ||
1217                             (boost::dynamic_pointer_cast<MidiRegion> (region) != 0 &&
1218                              dynamic_cast<MidiTimeAxisView*> (tv.first) != 0)) {
1219
1220                                 /* audio to audio
1221                                    OR
1222                                    midi to midi
1223                                 */
1224
1225                                 context->drag_status (context->get_suggested_action(), time);
1226                                 return true;
1227                         }
1228                 } else {
1229                         /* DND originating from outside ardour
1230                          *
1231                          * TODO: check if file is audio/midi, allow drops on same track-type only,
1232                          * currently: if audio is dropped on a midi-track, it is only added to the region-list
1233                          */
1234                         if (UIConfiguration::instance().get_only_copy_imported_files()) {
1235                                 context->drag_status(Gdk::ACTION_COPY, time);
1236                         } else {
1237                                 if ((context->get_actions() & (Gdk::ACTION_COPY | Gdk::ACTION_LINK | Gdk::ACTION_MOVE)) == Gdk::ACTION_COPY) {
1238                                         context->drag_status(Gdk::ACTION_COPY, time);
1239                                 } else {
1240                                         context->drag_status(Gdk::ACTION_LINK, time);
1241                                 }
1242                         }
1243                         return true;
1244                 }
1245         }
1246
1247         /* no drop here */
1248         context->drag_status (Gdk::DragAction (0), time);
1249         return false;
1250 }
1251
1252 void
1253 Editor::drop_regions (const Glib::RefPtr<Gdk::DragContext>& /*context*/,
1254                       int x, int y,
1255                       const SelectionData& /*data*/,
1256                       guint /*info*/, guint /*time*/)
1257 {
1258         GdkEvent event;
1259         double px;
1260         double py;
1261
1262         event.type = GDK_MOTION_NOTIFY;
1263         event.button.x = x;
1264         event.button.y = y;
1265         /* assume we're dragging with button 1 */
1266         event.motion.state = Gdk::BUTTON1_MASK;
1267         samplepos_t const pos = window_event_sample (&event, &px, &py);
1268
1269         boost::shared_ptr<Region> region = _regions->get_dragged_region ();
1270         if (!region) { return; }
1271
1272         RouteTimeAxisView* rtav = 0;
1273         std::pair<TimeAxisView*, int> const tv = trackview_by_y_position (py, false);
1274
1275         if (tv.first != 0) {
1276                 rtav = dynamic_cast<RouteTimeAxisView*> (tv.first);
1277         } else {
1278                 try {
1279                         if (boost::dynamic_pointer_cast<AudioRegion> (region)) {
1280                                 uint32_t output_chan = region->n_channels();
1281                                 if ((Config->get_output_auto_connect() & AutoConnectMaster) && session()->master_out()) {
1282                                         output_chan =  session()->master_out()->n_inputs().n_audio();
1283                                 }
1284                                 list<boost::shared_ptr<AudioTrack> > audio_tracks;
1285                                 audio_tracks = session()->new_audio_track (region->n_channels(), output_chan, 0, 1, region->name(), PresentationInfo::max_order);
1286                                 rtav = dynamic_cast<RouteTimeAxisView*> (time_axis_view_from_stripable (audio_tracks.front()));
1287                         } else if (boost::dynamic_pointer_cast<MidiRegion> (region)) {
1288                                 ChanCount one_midi_port (DataType::MIDI, 1);
1289                                 list<boost::shared_ptr<MidiTrack> > midi_tracks;
1290                                 midi_tracks = session()->new_midi_track (one_midi_port, one_midi_port,
1291                                                                          Config->get_strict_io () || Profile->get_mixbus (),
1292                                                                          boost::shared_ptr<ARDOUR::PluginInfo>(),
1293                                                                          (ARDOUR::Plugin::PresetRecord*) 0,
1294                                                                          (ARDOUR::RouteGroup*) 0, 1, region->name(), PresentationInfo::max_order);
1295                                 rtav = dynamic_cast<RouteTimeAxisView*> (time_axis_view_from_stripable (midi_tracks.front()));
1296                         } else {
1297                                 return;
1298                         }
1299                 } catch (...) {
1300                         error << _("Could not create new track after region placed in the drop zone") << endmsg;
1301                         return;
1302                 }
1303         }
1304
1305         if (rtav != 0 && rtav->is_track ()) {
1306                 boost::shared_ptr<Region> region_copy = RegionFactory::create (region, true);
1307
1308                 if ((boost::dynamic_pointer_cast<AudioRegion> (region_copy) != 0 && dynamic_cast<AudioTimeAxisView*> (rtav) != 0) ||
1309                     (boost::dynamic_pointer_cast<MidiRegion> (region_copy) != 0 && dynamic_cast<MidiTimeAxisView*> (rtav) != 0)) {
1310                         _drags->set (new RegionInsertDrag (this, region_copy, rtav, pos), &event);
1311                         _drags->end_grab (&event);
1312                 }
1313         }
1314 }
1315
1316 bool
1317 Editor::key_press_handler (ArdourCanvas::Item*, GdkEvent*, ItemType)
1318 {
1319         return false;
1320 }
1321
1322 bool
1323 Editor::key_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemType type)
1324 {
1325
1326         bool handled = false;
1327
1328         switch (type) {
1329         case TempoMarkerItem:
1330                 switch (event->key.keyval) {
1331                 case GDK_Delete:
1332                         remove_tempo_marker (item);
1333                         handled = true;
1334                         break;
1335                 default:
1336                         break;
1337                 }
1338                 break;
1339
1340         case MeterMarkerItem:
1341                 switch (event->key.keyval) {
1342                 case GDK_Delete:
1343                         remove_meter_marker (item);
1344                         handled = true;
1345                         break;
1346                 default:
1347                         break;
1348                 }
1349                 break;
1350
1351         default:
1352                 break;
1353         }
1354
1355         return handled;
1356 }
1357