gtk2_ardour/editor_canvas.cc

   1 /*
   2     Copyright (C) 2005 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 <libgnomecanvasmm/init.h>
  21 #include <libgnomecanvasmm/pixbuf.h>
  22 #include <jack/types.h>
  23 #include <gtkmm2ext/utils.h>
  24
  25 #include <ardour/audioregion.h>
  26 #include <ardour/profile.h>
  27
  28 #include "ardour_ui.h"
  29 #include "editor.h"
  30 #include "waveview.h"
  31 #include "simplerect.h"
  32 #include "simpleline.h"
  33 #include "imageframe.h"
  34 #include "waveview_p.h"
  35 #include "simplerect_p.h"
  36 #include "simpleline_p.h"
  37 #include "imageframe_p.h"
  38 #include "canvas_impl.h"
  39 #include "editing.h"
  40 #include "rgb_macros.h"
  41 #include "utils.h"
  42 #include "time_axis_view.h"
  43 #include "audio_time_axis.h"
  44
  45 #include "i18n.h"
  46
  47 using namespace std;
  48 using namespace sigc;
  49 using namespace ARDOUR;
  50 using namespace PBD;
  51 using namespace Gtk;
  52 using namespace Glib;
  53 using namespace Gtkmm2ext;
  54 using namespace Editing;
  55
  56 /* XXX this is a hack. it ought to be the maximum value of an nframes_t */
  57
  58 const double max_canvas_coordinate = (double) JACK_MAX_FRAMES;
  59
  60 extern "C"
  61 {
  62
  63 GType gnome_canvas_simpleline_get_type(void);
  64 GType gnome_canvas_simplerect_get_type(void);
  65 GType gnome_canvas_waveview_get_type(void);
  66 GType gnome_canvas_imageframe_get_type(void);
  67
  68 }
  69
  70 static void ardour_canvas_type_init()
  71 {
  72         // Map gtypes to gtkmm wrapper-creation functions:
  73
  74         Glib::wrap_register(gnome_canvas_simpleline_get_type(), &Gnome::Canvas::SimpleLine_Class::wrap_new);
  75         Glib::wrap_register(gnome_canvas_simplerect_get_type(), &Gnome::Canvas::SimpleRect_Class::wrap_new);
  76         Glib::wrap_register(gnome_canvas_waveview_get_type(), &Gnome::Canvas::WaveView_Class::wrap_new);
  77         Glib::wrap_register(gnome_canvas_imageframe_get_type(), &Gnome::Canvas::ImageFrame_Class::wrap_new);
  78
  79         // Register the gtkmm gtypes:
  80
  81         (void) Gnome::Canvas::WaveView::get_type();
  82         (void) Gnome::Canvas::SimpleLine::get_type();
  83         (void) Gnome::Canvas::SimpleRect::get_type();
  84         (void) Gnome::Canvas::ImageFrame::get_type();
  85 }
  86
  87 void
  88 Editor::initialize_canvas ()
  89 {
  90         if (getenv ("ARDOUR_NON_AA_CANVAS")) {
  91                 track_canvas = new ArdourCanvas::Canvas ();
  92                 time_canvas = new ArdourCanvas::Canvas ();
  93         } else {
  94                 track_canvas = new ArdourCanvas::CanvasAA ();
  95                 time_canvas = new ArdourCanvas::CanvasAA ();
  96         }
  97
  98         ArdourCanvas::init ();
  99         ardour_canvas_type_init ();
 100
 101         /* don't try to center the canvas */
 102
 103         track_canvas->set_center_scroll_region (false);
 104         track_canvas->set_dither        (Gdk::RGB_DITHER_NONE);
 105
 106         /* need to handle 4 specific types of events as catch-alls */
 107
 108         track_canvas->signal_scroll_event().connect (mem_fun (*this, &Editor::track_canvas_scroll_event));
 109         track_canvas->signal_motion_notify_event().connect (mem_fun (*this, &Editor::track_canvas_motion_notify_event));
 110         track_canvas->signal_button_press_event().connect (mem_fun (*this, &Editor::track_canvas_button_press_event));
 111         track_canvas->signal_button_release_event().connect (mem_fun (*this, &Editor::track_canvas_button_release_event));
 112
 113         /* just scroll stuff for the timecanvas */
 114         time_canvas->signal_scroll_event().connect (mem_fun (*this, &Editor::time_canvas_scroll_event));
 115
 116         track_canvas->set_name ("EditorMainCanvas");
 117         track_canvas->add_events (Gdk::POINTER_MOTION_HINT_MASK|Gdk::SCROLL_MASK);
 118         track_canvas->signal_leave_notify_event().connect (mem_fun(*this, &Editor::left_track_canvas));
 119         track_canvas->set_flags (CAN_FOCUS);
 120
 121         /* set up drag-n-drop */
 122
 123         vector<TargetEntry> target_table;
 124
 125         // Drag-N-Drop from the region list can generate this target
 126         target_table.push_back (TargetEntry ("regions"));
 127
 128         target_table.push_back (TargetEntry ("text/plain"));
 129         target_table.push_back (TargetEntry ("text/uri-list"));
 130         target_table.push_back (TargetEntry ("application/x-rootwin-drop"));
 131
 132         track_canvas->drag_dest_set (target_table);
 133         track_canvas->signal_drag_data_received().connect (mem_fun(*this, &Editor::track_canvas_drag_data_received));
 134
 135         /* stuff for the verbose canvas cursor */
 136
 137         Pango::FontDescription* font = get_font_for_style (N_("VerboseCanvasCursor"));
 138
 139         verbose_canvas_cursor = new ArdourCanvas::Text (*track_canvas->root());
 140         verbose_canvas_cursor->property_font_desc() = *font;
 141         verbose_canvas_cursor->property_anchor() = ANCHOR_NW;
 142
 143         delete font;
 144
 145         verbose_cursor_visible = false;
 146
 147         /* on the bottom, an image */
 148
 149         if (Profile->get_sae()) {
 150                 Image img (::get_icon (X_("saelogo")));
 151                 logo_item = new ArdourCanvas::Pixbuf (*track_canvas->root(), 0.0, 0.0, img.get_pixbuf());
 152                 // logo_item->property_height_in_pixels() = true;
 153                 // logo_item->property_width_in_pixels() = true;
 154                 // logo_item->property_height_set() = true;
 155                 // logo_item->property_width_set() = true;
 156                 logo_item->show ();
 157         }
 158
 159         /* a group to hold time (measure) lines */
 160
 161         time_line_group = new ArdourCanvas::Group (*track_canvas->root(), 0.0, 0.0);
 162         cursor_group = new ArdourCanvas::Group (*track_canvas->root(), 0.0, 0.0);
 163
 164         time_canvas->set_name ("EditorTimeCanvas");
 165         time_canvas->add_events (Gdk::POINTER_MOTION_HINT_MASK);
 166         time_canvas->set_flags (CAN_FOCUS);
 167         time_canvas->set_center_scroll_region (false);
 168         time_canvas->set_dither         (Gdk::RGB_DITHER_NONE);
 169
 170         meter_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, 0.0);
 171         tempo_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height);
 172         range_marker_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height * 2.0);
 173         transport_marker_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height * 3.0);
 174         marker_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height * 4.0);
 175         cd_marker_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height * 5.0);
 176
 177         tempo_bar = new ArdourCanvas::SimpleRect (*tempo_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 178         tempo_bar->property_outline_what() = (0x1 | 0x8);
 179         tempo_bar->property_outline_pixels() = 0;
 180
 181         meter_bar = new ArdourCanvas::SimpleRect (*meter_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 182         meter_bar->property_outline_what() = (0x1 | 0x8);
 183         meter_bar->property_outline_pixels() = 0;
 184
 185         marker_bar = new ArdourCanvas::SimpleRect (*marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 186         marker_bar->property_outline_what() = (0x1 | 0x8);
 187         marker_bar->property_outline_pixels() = 0;
 188
 189         cd_marker_bar = new ArdourCanvas::SimpleRect (*cd_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 190         cd_marker_bar->property_outline_what() = (0x1 | 0x8);
 191         cd_marker_bar->property_outline_pixels() = 0;
 192
 193         range_marker_bar = new ArdourCanvas::SimpleRect (*range_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 194         range_marker_bar->property_outline_what() = (0x1 | 0x8);
 195         range_marker_bar->property_outline_pixels() = 0;
 196
 197         transport_marker_bar = new ArdourCanvas::SimpleRect (*transport_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 198         transport_marker_bar->property_outline_what() = (0x1 | 0x8);
 199         transport_marker_bar->property_outline_pixels() = 0;
 200
 201         cd_marker_bar_drag_rect = new ArdourCanvas::SimpleRect (*cd_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 202         cd_marker_bar_drag_rect->property_outline_pixels() = 0;
 203         cd_marker_bar_drag_rect->hide ();
 204
 205         range_bar_drag_rect = new ArdourCanvas::SimpleRect (*range_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 206         range_bar_drag_rect->property_outline_pixels() = 0;
 207
 208         transport_bar_drag_rect = new ArdourCanvas::SimpleRect (*transport_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 209         transport_bar_drag_rect->property_outline_pixels() = 0;
 210         transport_bar_drag_rect->hide ();
 211
 212         marker_drag_line_points.push_back(Gnome::Art::Point(0.0, 0.0));
 213         marker_drag_line_points.push_back(Gnome::Art::Point(0.0, 0.0));
 214
 215         marker_drag_line = new ArdourCanvas::Line (*track_canvas->root());
 216         marker_drag_line->property_width_pixels() = 1;
 217         marker_drag_line->property_points() = marker_drag_line_points;
 218         marker_drag_line->hide();
 219
 220         range_marker_drag_rect = new ArdourCanvas::SimpleRect (*track_canvas->root(), 0.0, 0.0, 0.0, 0.0);
 221         range_marker_drag_rect->hide ();
 222
 223         transport_loop_range_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, 0.0);
 224         transport_loop_range_rect->property_outline_pixels() = 1;
 225         transport_loop_range_rect->hide();
 226
 227         transport_punch_range_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, 0.0);
 228         transport_punch_range_rect->property_outline_pixels() = 0;
 229         transport_punch_range_rect->hide();
 230
 231         transport_loop_range_rect->lower_to_bottom (); // loop on the bottom
 232
 233         transport_punchin_line = new ArdourCanvas::SimpleLine (*time_line_group);
 234         transport_punchin_line->property_x1() = 0.0;
 235         transport_punchin_line->property_y1() = 0.0;
 236         transport_punchin_line->property_x2() = 0.0;
 237         transport_punchin_line->property_y2() = 0.0;
 238         transport_punchin_line->hide ();
 239
 240         transport_punchout_line  = new ArdourCanvas::SimpleLine (*time_line_group);
 241         transport_punchout_line->property_x1() = 0.0;
 242         transport_punchout_line->property_y1() = 0.0;
 243         transport_punchout_line->property_x2() = 0.0;
 244         transport_punchout_line->property_y2() = 0.0;
 245         transport_punchout_line->hide();
 246
 247         // used to show zoom mode active zooming
 248         zoom_rect = new ArdourCanvas::SimpleRect (*track_canvas->root(), 0.0, 0.0, 0.0, 0.0);
 249         zoom_rect->property_outline_pixels() = 1;
 250         zoom_rect->hide();
 251
 252         zoom_rect->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_zoom_rect_event), (ArdourCanvas::Item*) 0));
 253
 254         // used as rubberband rect
 255         rubberband_rect = new ArdourCanvas::SimpleRect (*track_canvas->root(), 0.0, 0.0, 0.0, 0.0);
 256         rubberband_rect->property_outline_pixels() = 1;
 257         rubberband_rect->hide();
 258
 259         tempo_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_tempo_bar_event), tempo_bar));
 260         meter_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_meter_bar_event), meter_bar));
 261         marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_marker_bar_event), marker_bar));
 262         cd_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_cd_marker_bar_event), cd_marker_bar));
 263         range_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_range_marker_bar_event), range_marker_bar));
 264         transport_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_transport_marker_bar_event), transport_marker_bar));
 265
 266         ZoomChanged.connect (bind (mem_fun(*this, &Editor::update_loop_range_view), false));
 267         ZoomChanged.connect (bind (mem_fun(*this, &Editor::update_punch_range_view), false));
 268
 269         double time_height = timebar_height * 5;
 270         double time_width = FLT_MAX/frames_per_unit;
 271         time_canvas->set_scroll_region(0.0, 0.0, time_width, time_height);
 272
 273         playhead_cursor = new Cursor (*this, &Editor::canvas_playhead_cursor_event);
 274
 275         initial_ruler_update_required = true;
 276         track_canvas->signal_size_allocate().connect (mem_fun(*this, &Editor::track_canvas_allocate));
 277
 278         if (logo_item) {
 279                 logo_item->lower_to_bottom ();
 280         }
 281
 282         ColorsChanged.connect (mem_fun (*this, &Editor::color_handler));
 283         color_handler();
 284
 285 }
 286
 287 void
 288 Editor::track_canvas_allocate (Gtk::Allocation alloc)
 289 {
 290         canvas_allocation = alloc;
 291
 292         if (!initial_ruler_update_required) {
 293                 if (!canvas_idle_queued) {
 294                         /* call this first so that we do stuff before any pending redraw */
 295                         Glib::signal_idle().connect (mem_fun (*this, &Editor::track_canvas_size_allocated), false);
 296                         canvas_idle_queued = true;
 297                 }
 298                 return;
 299         }
 300
 301         initial_ruler_update_required = false;
 302         track_canvas_size_allocated ();
 303 }
 304
 305 bool
 306 Editor::track_canvas_size_allocated ()
 307 {
 308         if (canvas_idle_queued) {
 309                 canvas_idle_queued = false;
 310         }
 311
 312         canvas_width = canvas_allocation.get_width();
 313         canvas_height = canvas_allocation.get_height();
 314
 315         full_canvas_height = canvas_height;
 316
 317         if (session) {
 318                 TrackViewList::iterator i;
 319                 double height = 0;
 320
 321                 for (i = track_views.begin(); i != track_views.end(); ++i) {
 322                         if ((*i)->control_parent) {
 323                                 height += (*i)->effective_height;
 324                         }
 325                 }
 326
 327                 full_canvas_height = height;
 328         }
 329
 330         zoom_range_clock.set ((nframes_t) floor ((canvas_width * frames_per_unit)));
 331         playhead_cursor->set_position (playhead_cursor->current_frame);
 332
 333         reset_hscrollbar_stepping ();
 334         reset_scrolling_region ();
 335
 336         if (playhead_cursor) playhead_cursor->set_length (canvas_height);
 337
 338         double y1 = vertical_adjustment.get_value ();
 339
 340         for (MarkerSelection::iterator x = selection->markers.begin(); x != selection->markers.end(); ++x) {
 341                 (*x)->set_line_vpos (y1, canvas_height);
 342         }
 343
 344         range_marker_drag_rect->property_y1() = y1;
 345         range_marker_drag_rect->property_y2() = full_canvas_height;
 346         transport_loop_range_rect->property_y1() = y1;
 347         transport_loop_range_rect->property_y2() = full_canvas_height;
 348         transport_punch_range_rect->property_y1() = y1;
 349         transport_punch_range_rect->property_y2() = full_canvas_height;
 350         transport_punchin_line->property_y1() = y1;
 351         transport_punchin_line->property_y2() = full_canvas_height;
 352         transport_punchout_line->property_y1() = y1;
 353         transport_punchout_line->property_y2() = full_canvas_height;
 354
 355         update_fixed_rulers();
 356         redisplay_tempo (true);
 357
 358         Resized (); /* EMIT_SIGNAL */
 359
 360         return false;
 361 }
 362
 363 void
 364 Editor::reset_scrolling_region (Gtk::Allocation* alloc)
 365 {
 366         TreeModel::Children rows = route_display_model->children();
 367         TreeModel::Children::iterator i;
 368         double pos;
 369
 370         for (pos = 0, i = rows.begin(); i != rows.end(); ++i) {
 371                 TimeAxisView *tv = (*i)[route_display_columns.tv];
 372                 if (tv != 0 && !tv->hidden()) {
 373                         pos += tv->effective_height;
 374                 }
 375         }
 376
 377         double last_canvas_unit =  max ((last_canvas_frame / frames_per_unit), canvas_width);
 378
 379         track_canvas->set_scroll_region (0.0, 0.0, last_canvas_unit, pos);
 380
 381         // XXX what is the correct height value for the time canvas ? this overstates it
 382         time_canvas->set_scroll_region ( 0.0, 0.0, last_canvas_unit, canvas_height);
 383
 384         range_marker_drag_rect->property_y2() = canvas_height;
 385         transport_loop_range_rect->property_y2() = canvas_height;
 386         transport_punch_range_rect->property_y2() = canvas_height;
 387         transport_punchin_line->property_y2() = canvas_height;
 388         transport_punchout_line->property_y2() = canvas_height;
 389
 390         update_punch_range_view (true);
 391
 392         controls_layout.queue_resize();
 393 }
 394
 395 void
 396 Editor::controls_layout_size_request (Requisition* req)
 397 {
 398         TreeModel::Children rows = route_display_model->children();
 399         TreeModel::Children::iterator i;
 400         double pos;
 401
 402         for (pos = 0, i = rows.begin(); i != rows.end(); ++i) {
 403                 TimeAxisView *tv = (*i)[route_display_columns.tv];
 404                 if (tv != 0) {
 405                         pos += tv->effective_height;
 406                 }
 407         }
 408
 409         RefPtr<Gdk::Screen> screen = get_screen();
 410
 411         if (!screen) {
 412                 screen = Gdk::Screen::get_default();
 413         }
 414
 415         edit_controls_vbox.check_resize();
 416         req->width = max (edit_controls_vbox.get_width(),  controls_layout.get_width());
 417
 418         /* don't get too big. the fudge factors here are just guesses */
 419
 420         req->width = min (req->width, screen->get_width() - 300);
 421         req->height = min ((gint) pos, (screen->get_height() - 400));
 422
 423         /* this one is important: it determines how big the layout thinks it really is, as
 424            opposed to what it displays on the screen
 425         */
 426
 427         controls_layout.set_size (edit_controls_vbox.get_width(), (gint) pos);
 428         controls_layout.set_size_request(edit_controls_vbox.get_width(), -1);
 429         zoom_box.set_size_request(edit_controls_vbox.get_width(), -1);
 430         time_button_frame.set_size_request(edit_controls_vbox.get_width() + edit_vscrollbar.get_width(), -1);
 431
 432         //cerr << "sizes = " << req->width << " " << edit_controls_vbox.get_width() << " " << controls_layout.get_width() << " " << zoom_box.get_width() << " " << time_button_frame.get_width() << endl;//DEBUG
 433 }
 434
 435 bool
 436 Editor::track_canvas_map_handler (GdkEventAny* ev)
 437 {
 438         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
 439         return false;
 440 }
 441
 442 bool
 443 Editor::time_canvas_map_handler (GdkEventAny* ev)
 444 {
 445         time_canvas->get_window()->set_cursor (*timebar_cursor);
 446         return false;
 447 }
 448
 449 void
 450 Editor::track_canvas_drag_data_received (const RefPtr<Gdk::DragContext>& context,
 451                                          int x, int y,
 452                                          const SelectionData& data,
 453                                          guint info, guint time)
 454 {
 455         cerr << "drop on canvas, target = " << data.get_target() << endl;
 456
 457         if (data.get_target() == "regions") {
 458                 drop_regions (context, x, y, data, info, time);
 459         } else {
 460                 drop_paths (context, x, y, data, info, time);
 461         }
 462 }
 463
 464 void
 465 Editor::drop_paths (const RefPtr<Gdk::DragContext>& context,
 466                     int x, int y,
 467                     const SelectionData& data,
 468                     guint info, guint time)
 469 {
 470         TimeAxisView* tvp;
 471         AudioTimeAxisView* tv;
 472         double cy;
 473         vector<ustring> paths;
 474         string spath;
 475         GdkEvent ev;
 476         nframes64_t frame;
 477
 478         if (convert_drop_to_paths (paths, context, x, y, data, info, time)) {
 479                 goto out;
 480         }
 481
 482         /* D-n-D coordinates are window-relative, so convert to "world" coordinates
 483          */
 484
 485         double wx;
 486         double wy;
 487
 488         track_canvas->window_to_world (x, y, wx, wy);
 489         wx += horizontal_adjustment.get_value();
 490         wy += vertical_adjustment.get_value();
 491
 492         ev.type = GDK_BUTTON_RELEASE;
 493         ev.button.x = wx;
 494         ev.button.y = wy;
 495
 496         frame = event_frame (&ev, 0, &cy);
 497
 498         snap_to (frame);
 499
 500         if ((tvp = trackview_by_y_position (cy)) == 0) {
 501
 502                 /* drop onto canvas background: create new tracks */
 503
 504                 frame = 0;
 505
 506                 if (Profile->get_sae() || Config->get_only_copy_imported_files()) {
 507                         do_import (paths, Editing::ImportDistinctFiles, Editing::ImportAsTrack, SrcBest, frame);
 508                 } else {
 509                         do_embed (paths, Editing::ImportDistinctFiles, ImportAsTrack, frame);
 510                 }
 511
 512         } else if ((tv = dynamic_cast<AudioTimeAxisView*>(tvp)) != 0) {
 513
 514                 /* check that its an audio track, not a bus */
 515
 516                 if (tv->get_diskstream()) {
 517                         /* select the track, then embed */
 518                         selection->set (tv);
 519
 520                         if (Profile->get_sae() || Config->get_only_copy_imported_files()) {
 521                                 do_import (paths, Editing::ImportDistinctFiles, Editing::ImportToTrack, SrcBest, frame);
 522                         } else {
 523                                 do_embed (paths, Editing::ImportDistinctFiles, ImportToTrack, frame);
 524                         }
 525                 }
 526         }
 527
 528   out:
 529         context->drag_finish (true, false, time);
 530 }
 531
 532 void
 533 Editor::drop_regions (const RefPtr<Gdk::DragContext>& context,
 534                       int x, int y,
 535                       const SelectionData& data,
 536                       guint info, guint time)
 537 {
 538         const SerializedObjectPointers<boost::shared_ptr<Region> >* sr =
 539                 reinterpret_cast<const SerializedObjectPointers<boost::shared_ptr<Region> > *> (data.get_data());
 540
 541         for (uint32_t i = 0; i < sr->cnt; ++i) {
 542
 543                 boost::shared_ptr<Region> r = sr->data[i];
 544                 boost::shared_ptr<AudioRegion> ar;
 545
 546                 if ((ar = boost::dynamic_pointer_cast<AudioRegion>(r)) != 0) {
 547                         insert_region_list_drag (ar, x, y);
 548                 }
 549         }
 550
 551         context->drag_finish (true, false, time);
 552 }
 553
 554 void
 555 Editor::maybe_autoscroll (GdkEventMotion* event)
 556 {
 557         nframes_t rightmost_frame = leftmost_frame + current_page_frames();
 558         nframes_t frame = drag_info.current_pointer_frame;
 559         bool startit = false;
 560         double vertical_pos = vertical_adjustment.get_value();
 561
 562         autoscroll_y = 0;
 563         autoscroll_x = 0;
 564
 565         if (event->y < vertical_pos) {
 566                 autoscroll_y = -1;
 567                 startit = true;
 568         }
 569
 570         if (event->y > vertical_pos + canvas_height) {
 571                 autoscroll_y = 1;
 572                 startit = true;
 573         }
 574
 575         if (frame > rightmost_frame) {
 576
 577                 if (rightmost_frame < max_frames) {
 578                         autoscroll_x = 1;
 579                         startit = true;
 580                 }
 581
 582         } else if (frame < leftmost_frame) {
 583
 584                 if (leftmost_frame > 0) {
 585                         autoscroll_x = -1;
 586                         startit = true;
 587                 }
 588
 589         }
 590
 591         if ((autoscroll_x != last_autoscroll_x) || (autoscroll_y != last_autoscroll_y) || (autoscroll_x == 0 && autoscroll_y == 0)) {
 592                 stop_canvas_autoscroll ();
 593         }
 594
 595         if (startit && autoscroll_timeout_tag < 0) {
 596                 start_canvas_autoscroll (autoscroll_x, autoscroll_y);
 597         }
 598
 599         last_autoscroll_x = autoscroll_x;
 600         last_autoscroll_y = autoscroll_y;
 601 }
 602
 603 gint
 604 Editor::_autoscroll_canvas (void *arg)
 605 {
 606         return ((Editor *) arg)->autoscroll_canvas ();
 607 }
 608
 609 bool
 610 Editor::autoscroll_canvas ()
 611 {
 612         nframes_t new_frame;
 613         nframes_t limit = max_frames - current_page_frames();
 614         GdkEventMotion ev;
 615         nframes_t target_frame;
 616         double new_pixel;
 617         double target_pixel;
 618
 619         if (autoscroll_x < 0) {
 620                 if (leftmost_frame < autoscroll_x_distance) {
 621                         new_frame = 0;
 622                 } else {
 623                         new_frame = leftmost_frame - autoscroll_x_distance;
 624                 }
 625                 target_frame = drag_info.current_pointer_frame - autoscroll_x_distance;
 626         } else if (autoscroll_x > 0) {
 627                 if (leftmost_frame > limit - autoscroll_x_distance) {
 628                         new_frame = limit;
 629                 } else {
 630                         new_frame = leftmost_frame + autoscroll_x_distance;
 631                 }
 632                 target_frame = drag_info.current_pointer_frame + autoscroll_x_distance;
 633         } else {
 634                 target_frame = drag_info.current_pointer_frame;
 635                 new_frame = leftmost_frame;
 636         }
 637
 638         double vertical_pos = vertical_adjustment.get_value();
 639
 640         if (autoscroll_y < 0) {
 641
 642                 if (vertical_pos < autoscroll_y_distance) {
 643                         new_pixel = 0;
 644                 } else {
 645                         new_pixel = vertical_pos - autoscroll_y_distance;
 646                 }
 647
 648                 target_pixel = drag_info.current_pointer_y - autoscroll_y_distance;
 649                 target_pixel = max (target_pixel, 0.0);
 650
 651         } else if (autoscroll_y > 0) {
 652
 653                 double top_of_bottom_of_canvas = full_canvas_height - canvas_height;
 654
 655                 if (vertical_pos > full_canvas_height - autoscroll_y_distance) {
 656                         new_pixel = full_canvas_height;
 657                 } else {
 658                         new_pixel = vertical_pos + autoscroll_y_distance;
 659                 }
 660
 661                 new_pixel = min (top_of_bottom_of_canvas, new_pixel);
 662
 663                 target_pixel = drag_info.current_pointer_y + autoscroll_y_distance;
 664
 665                 /* don't move to the full canvas height because the item will be invisible
 666                    (its top edge will line up with the bottom of the visible canvas.
 667                 */
 668
 669                 target_pixel = min (target_pixel, full_canvas_height - 10);
 670
 671         } else {
 672                 target_pixel = drag_info.current_pointer_y;
 673                 new_pixel = vertical_pos;
 674         }
 675
 676         /* now fake a motion event to get the object that is being dragged to move too */
 677
 678         ev.type = GDK_MOTION_NOTIFY;
 679         ev.state &= Gdk::BUTTON1_MASK;
 680         ev.x = frame_to_unit (target_frame);
 681         ev.y = target_pixel;
 682         motion_handler (drag_info.item, (GdkEvent*) &ev, drag_info.item_type, true);
 683
 684         if ((new_frame == 0 || new_frame == limit) && (new_pixel == 0 || new_pixel == DBL_MAX)) {
 685                 /* we are done */
 686                 return false;
 687         }
 688
 689         autoscroll_cnt++;
 690
 691         if (autoscroll_cnt == 1) {
 692
 693                 /* connect the timeout so that we get called repeatedly */
 694
 695                 autoscroll_timeout_tag = g_idle_add ( _autoscroll_canvas, this);
 696                 return false;
 697
 698         }
 699
 700         if (new_frame != leftmost_frame) {
 701                 reset_x_origin (new_frame);
 702         }
 703
 704         vertical_adjustment.set_value (new_pixel);
 705
 706         if (autoscroll_x_distance != 0) {
 707
 708                 if (autoscroll_cnt == 50) { /* 0.5 seconds */
 709
 710                         /* after about a while, speed up a bit by changing the timeout interval */
 711
 712                         autoscroll_x_distance = (nframes_t) floor (current_page_frames()/30.0f);
 713
 714                 } else if (autoscroll_cnt == 150) { /* 1.0 seconds */
 715
 716                         autoscroll_x_distance = (nframes_t) floor (current_page_frames()/20.0f);
 717
 718                 } else if (autoscroll_cnt == 300) { /* 1.5 seconds */
 719
 720                         /* after about another while, speed up by increasing the shift per callback */
 721
 722                         autoscroll_x_distance =  (nframes_t) floor (current_page_frames()/10.0f);
 723
 724                 }
 725         }
 726
 727         if (autoscroll_y_distance != 0) {
 728
 729                 if (autoscroll_cnt == 50) { /* 0.5 seconds */
 730
 731                         /* after about a while, speed up a bit by changing the timeout interval */
 732
 733                         autoscroll_y_distance = 10;
 734
 735                 } else if (autoscroll_cnt == 150) { /* 1.0 seconds */
 736
 737                         autoscroll_y_distance = 20;
 738
 739                 } else if (autoscroll_cnt == 300) { /* 1.5 seconds */
 740
 741                         /* after about another while, speed up by increasing the shift per callback */
 742
 743                         autoscroll_y_distance =  40;
 744                 }
 745         }
 746
 747         return true;
 748 }
 749
 750 void
 751 Editor::start_canvas_autoscroll (int dx, int dy)
 752 {
 753         if (!session || autoscroll_active) {
 754                 return;
 755         }
 756
 757         stop_canvas_autoscroll ();
 758
 759         autoscroll_active = true;
 760         autoscroll_x = dx;
 761         autoscroll_y = dy;
 762         autoscroll_x_distance = (nframes_t) floor (current_page_frames()/50.0);
 763         autoscroll_y_distance = fabs (dy * 5); /* pixels */
 764         autoscroll_cnt = 0;
 765
 766         /* do it right now, which will start the repeated callbacks */
 767
 768         autoscroll_canvas ();
 769 }
 770
 771 void
 772 Editor::stop_canvas_autoscroll ()
 773 {
 774         if (autoscroll_timeout_tag >= 0) {
 775                 g_source_remove (autoscroll_timeout_tag);
 776                 autoscroll_timeout_tag = -1;
 777         }
 778
 779         autoscroll_active = false;
 780 }
 781
 782 gint
 783 Editor::left_track_canvas (GdkEventCrossing *ev)
 784 {
 785         set_entered_track (0);
 786         set_entered_regionview (0);
 787         return FALSE;
 788 }
 789
 790 void
 791 Editor::tie_vertical_scrolling ()
 792 {
 793         double y1 = vertical_adjustment.get_value();
 794
 795         playhead_cursor->set_y_axis (y1);
 796
 797         range_marker_drag_rect->property_y1() = y1;
 798         range_marker_drag_rect->property_y2() = full_canvas_height;
 799         transport_loop_range_rect->property_y1() = y1;
 800         transport_loop_range_rect->property_y2() = full_canvas_height;
 801         transport_punch_range_rect->property_y1() = y1;
 802         transport_punch_range_rect->property_y2() = full_canvas_height;
 803         transport_punchin_line->property_y1() = y1;
 804         transport_punchin_line->property_y2() = full_canvas_height;
 805         transport_punchout_line->property_y1() = y1;
 806         transport_punchout_line->property_y2() = full_canvas_height;
 807
 808         if (!selection->markers.empty()) {
 809                 for (MarkerSelection::iterator x = selection->markers.begin(); x != selection->markers.end(); ++x) {
 810                         (*x)->set_line_vpos (y1, canvas_height);
 811                 }
 812         }
 813
 814         if (logo_item) {
 815                 logo_item->property_y() = y1;
 816         }
 817
 818         /* this will do an immediate redraw */
 819
 820         controls_layout.get_vadjustment()->set_value (y1);
 821 }
 822
 823 void
 824 Editor::canvas_horizontally_scrolled ()
 825 {
 826         nframes64_t time_origin = (nframes_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
 827
 828         if (time_origin != leftmost_frame) {
 829                 canvas_scroll_to (time_origin);
 830         }
 831 }
 832
 833 void
 834 Editor::canvas_scroll_to (nframes64_t time_origin)
 835 {
 836         leftmost_frame = time_origin;
 837         nframes_t rightmost_frame = leftmost_frame + current_page_frames ();
 838
 839         if (rightmost_frame > last_canvas_frame) {
 840                 last_canvas_frame = rightmost_frame;
 841                 reset_scrolling_region ();
 842         }
 843
 844         if (logo_item) {
 845                 logo_item->property_x() = horizontal_adjustment.get_value ();
 846         }
 847
 848         update_fixed_rulers ();
 849
 850         redisplay_tempo (!_dragging_hscrollbar);
 851 }
 852
 853 void
 854 Editor::color_handler()
 855 {
 856         playhead_cursor->canvas_item.property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_PlayHead.get();
 857         verbose_canvas_cursor->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_VerboseCanvasCursor.get();
 858
 859         meter_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MeterBar.get();
 860         meter_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 861
 862         tempo_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TempoBar.get();
 863         tempo_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 864
 865         marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBar.get();
 866         marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 867
 868         cd_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CDMarkerBar.get();
 869         cd_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 870
 871         range_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeMarkerBar.get();
 872         range_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 873
 874         transport_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportMarkerBar.get();
 875         transport_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 876
 877         cd_marker_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 878         cd_marker_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 879
 880         range_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 881         range_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 882
 883         transport_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 884         transport_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 885
 886         marker_drag_line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerDragLine.get();
 887
 888         range_marker_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 889         range_marker_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 890
 891         transport_loop_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 892         transport_loop_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 893
 894         transport_punch_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 895         transport_punch_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 896
 897         transport_punchin_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 898         transport_punchout_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 899
 900         zoom_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 901         zoom_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 902
 903         rubberband_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 904         rubberband_rect->property_fill_color_rgba() = (guint32) ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 905
 906         location_marker_color = ARDOUR_UI::config()->canvasvar_LocationMarker.get();
 907         location_range_color = ARDOUR_UI::config()->canvasvar_LocationRange.get();
 908         location_cd_marker_color = ARDOUR_UI::config()->canvasvar_LocationCDMarker.get();
 909         location_loop_color = ARDOUR_UI::config()->canvasvar_LocationLoop.get();
 910         location_punch_color = ARDOUR_UI::config()->canvasvar_LocationPunch.get();
 911
 912         refresh_location_display ();
 913         redisplay_tempo (true);
 914
 915         if (session)
 916                 session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks); // redraw metric markers
 917 }
 918
 919 void
 920 Editor::flush_canvas ()
 921 {
 922         if (is_mapped()) {
 923                 track_canvas->update_now ();
 924                 // gdk_window_process_updates (GTK_LAYOUT(track_canvas->gobj())->bin_window, true);
 925         }
 926 }
 927