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->signal_enter_notify_event().connect (mem_fun(*this, &Editor::entered_track_canvas));
 120         track_canvas->set_flags (CAN_FOCUS);
 121
 122         /* set up drag-n-drop */
 123
 124         vector<TargetEntry> target_table;
 125
 126         // Drag-N-Drop from the region list can generate this target
 127         target_table.push_back (TargetEntry ("regions"));
 128
 129         target_table.push_back (TargetEntry ("text/plain"));
 130         target_table.push_back (TargetEntry ("text/uri-list"));
 131         target_table.push_back (TargetEntry ("application/x-rootwin-drop"));
 132
 133         track_canvas->drag_dest_set (target_table);
 134         track_canvas->signal_drag_data_received().connect (mem_fun(*this, &Editor::track_canvas_drag_data_received));
 135
 136         /* stuff for the verbose canvas cursor */
 137
 138         Pango::FontDescription* font = get_font_for_style (N_("VerboseCanvasCursor"));
 139
 140         verbose_canvas_cursor = new ArdourCanvas::Text (*track_canvas->root());
 141         verbose_canvas_cursor->property_font_desc() = *font;
 142         verbose_canvas_cursor->property_anchor() = ANCHOR_NW;
 143
 144         delete font;
 145
 146         verbose_cursor_visible = false;
 147
 148         /* on the bottom, an image */
 149
 150         if (Profile->get_sae()) {
 151                 Image img (::get_icon (X_("saelogo")));
 152                 logo_item = new ArdourCanvas::Pixbuf (*track_canvas->root(), 0.0, 0.0, img.get_pixbuf());
 153                 // logo_item->property_height_in_pixels() = true;
 154                 // logo_item->property_width_in_pixels() = true;
 155                 // logo_item->property_height_set() = true;
 156                 // logo_item->property_width_set() = true;
 157                 logo_item->show ();
 158         }
 159
 160         /* a group to hold time (measure) lines */
 161
 162         time_line_group = new ArdourCanvas::Group (*track_canvas->root(), 0.0, 0.0);
 163         cursor_group = new ArdourCanvas::Group (*track_canvas->root(), 0.0, 0.0);
 164
 165         time_canvas->set_name ("EditorTimeCanvas");
 166         time_canvas->add_events (Gdk::POINTER_MOTION_HINT_MASK);
 167         time_canvas->set_flags (CAN_FOCUS);
 168         time_canvas->set_center_scroll_region (false);
 169         time_canvas->set_dither         (Gdk::RGB_DITHER_NONE);
 170
 171         meter_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, 0.0);
 172         tempo_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height);
 173         range_marker_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height * 2.0);
 174         transport_marker_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height * 3.0);
 175         marker_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height * 4.0);
 176         cd_marker_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height * 5.0);
 177
 178         tempo_bar = new ArdourCanvas::SimpleRect (*tempo_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 179         tempo_bar->property_outline_what() = (0x1 | 0x8);
 180         tempo_bar->property_outline_pixels() = 0;
 181
 182         meter_bar = new ArdourCanvas::SimpleRect (*meter_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 183         meter_bar->property_outline_what() = (0x1 | 0x8);
 184         meter_bar->property_outline_pixels() = 0;
 185
 186         marker_bar = new ArdourCanvas::SimpleRect (*marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 187         marker_bar->property_outline_what() = (0x1 | 0x8);
 188         marker_bar->property_outline_pixels() = 0;
 189
 190         cd_marker_bar = new ArdourCanvas::SimpleRect (*cd_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 191         cd_marker_bar->property_outline_what() = (0x1 | 0x8);
 192         cd_marker_bar->property_outline_pixels() = 0;
 193
 194         range_marker_bar = new ArdourCanvas::SimpleRect (*range_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 195         range_marker_bar->property_outline_what() = (0x1 | 0x8);
 196         range_marker_bar->property_outline_pixels() = 0;
 197
 198         transport_marker_bar = new ArdourCanvas::SimpleRect (*transport_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 199         transport_marker_bar->property_outline_what() = (0x1 | 0x8);
 200         transport_marker_bar->property_outline_pixels() = 0;
 201
 202         cd_marker_bar_drag_rect = new ArdourCanvas::SimpleRect (*cd_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 203         cd_marker_bar_drag_rect->property_outline_pixels() = 0;
 204         cd_marker_bar_drag_rect->hide ();
 205
 206         range_bar_drag_rect = new ArdourCanvas::SimpleRect (*range_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 207         range_bar_drag_rect->property_outline_pixels() = 0;
 208         range_bar_drag_rect->hide ();
 209
 210         transport_bar_drag_rect = new ArdourCanvas::SimpleRect (*transport_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 211         transport_bar_drag_rect->property_outline_pixels() = 0;
 212         transport_bar_drag_rect->hide ();
 213
 214         marker_drag_line_points.push_back(Gnome::Art::Point(0.0, 0.0));
 215         marker_drag_line_points.push_back(Gnome::Art::Point(0.0, 0.0));
 216
 217         marker_drag_line = new ArdourCanvas::Line (*track_canvas->root());
 218         marker_drag_line->property_width_pixels() = 1;
 219         marker_drag_line->property_points() = marker_drag_line_points;
 220         marker_drag_line->hide();
 221
 222         range_marker_drag_rect = new ArdourCanvas::SimpleRect (*track_canvas->root(), 0.0, 0.0, 0.0, 0.0);
 223         range_marker_drag_rect->hide ();
 224
 225         transport_loop_range_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, 0.0);
 226         transport_loop_range_rect->property_outline_pixels() = 1;
 227         transport_loop_range_rect->hide();
 228
 229         transport_punch_range_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, 0.0);
 230         transport_punch_range_rect->property_outline_pixels() = 0;
 231         transport_punch_range_rect->hide();
 232
 233         transport_loop_range_rect->lower_to_bottom (); // loop on the bottom
 234
 235         transport_punchin_line = new ArdourCanvas::SimpleLine (*time_line_group);
 236         transport_punchin_line->property_x1() = 0.0;
 237         transport_punchin_line->property_y1() = 0.0;
 238         transport_punchin_line->property_x2() = 0.0;
 239         transport_punchin_line->property_y2() = 0.0;
 240         transport_punchin_line->hide ();
 241
 242         transport_punchout_line  = new ArdourCanvas::SimpleLine (*time_line_group);
 243         transport_punchout_line->property_x1() = 0.0;
 244         transport_punchout_line->property_y1() = 0.0;
 245         transport_punchout_line->property_x2() = 0.0;
 246         transport_punchout_line->property_y2() = 0.0;
 247         transport_punchout_line->hide();
 248
 249         // used to show zoom mode active zooming
 250         zoom_rect = new ArdourCanvas::SimpleRect (*track_canvas->root(), 0.0, 0.0, 0.0, 0.0);
 251         zoom_rect->property_outline_pixels() = 1;
 252         zoom_rect->hide();
 253
 254         zoom_rect->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_zoom_rect_event), (ArdourCanvas::Item*) 0));
 255
 256         // used as rubberband rect
 257         rubberband_rect = new ArdourCanvas::SimpleRect (*track_canvas->root(), 0.0, 0.0, 0.0, 0.0);
 258         rubberband_rect->property_outline_pixels() = 1;
 259         rubberband_rect->hide();
 260
 261         tempo_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_tempo_bar_event), tempo_bar));
 262         meter_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_meter_bar_event), meter_bar));
 263         marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_marker_bar_event), marker_bar));
 264         cd_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_cd_marker_bar_event), cd_marker_bar));
 265         range_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_range_marker_bar_event), range_marker_bar));
 266         transport_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_transport_marker_bar_event), transport_marker_bar));
 267
 268         ZoomChanged.connect (bind (mem_fun(*this, &Editor::update_loop_range_view), false));
 269         ZoomChanged.connect (bind (mem_fun(*this, &Editor::update_punch_range_view), false));
 270
 271         double time_height = timebar_height * 5;
 272         double time_width = FLT_MAX/frames_per_unit;
 273         time_canvas->set_scroll_region(0.0, 0.0, time_width, time_height);
 274
 275         playhead_cursor = new Cursor (*this, &Editor::canvas_playhead_cursor_event);
 276
 277         initial_ruler_update_required = true;
 278         track_canvas->signal_size_allocate().connect (mem_fun(*this, &Editor::track_canvas_allocate));
 279
 280         if (logo_item) {
 281                 logo_item->lower_to_bottom ();
 282         }
 283
 284         ColorsChanged.connect (mem_fun (*this, &Editor::color_handler));
 285         color_handler();
 286
 287 }
 288
 289 void
 290 Editor::track_canvas_allocate (Gtk::Allocation alloc)
 291 {
 292         canvas_allocation = alloc;
 293
 294         if (!initial_ruler_update_required) {
 295                 if (!canvas_idle_queued) {
 296                         /* call this first so that we do stuff before any pending redraw */
 297                         Glib::signal_idle().connect (mem_fun (*this, &Editor::track_canvas_size_allocated), false);
 298                         canvas_idle_queued = true;
 299                 }
 300                 return;
 301         }
 302
 303         initial_ruler_update_required = false;
 304         track_canvas_size_allocated ();
 305 }
 306
 307 bool
 308 Editor::track_canvas_size_allocated ()
 309 {
 310         if (canvas_idle_queued) {
 311                 canvas_idle_queued = false;
 312         }
 313
 314         canvas_width = canvas_allocation.get_width();
 315         canvas_height = canvas_allocation.get_height();
 316
 317         full_canvas_height = canvas_height;
 318
 319         if (session) {
 320                 TrackViewList::iterator i;
 321                 double height = 0;
 322
 323                 for (i = track_views.begin(); i != track_views.end(); ++i) {
 324                         if ((*i)->control_parent) {
 325                                 height += (*i)->effective_height;
 326                         }
 327                 }
 328
 329                 full_canvas_height = height;
 330         }
 331
 332         zoom_range_clock.set ((nframes_t) floor ((canvas_width * frames_per_unit)));
 333         playhead_cursor->set_position (playhead_cursor->current_frame);
 334
 335         reset_hscrollbar_stepping ();
 336         reset_scrolling_region ();
 337
 338         if (playhead_cursor) playhead_cursor->set_length (canvas_height);
 339
 340         double y1 = vertical_adjustment.get_value ();
 341
 342         for (MarkerSelection::iterator x = selection->markers.begin(); x != selection->markers.end(); ++x) {
 343                 (*x)->set_line_vpos (y1, canvas_height);
 344         }
 345
 346         range_marker_drag_rect->property_y1() = y1;
 347         range_marker_drag_rect->property_y2() = full_canvas_height;
 348         transport_loop_range_rect->property_y1() = y1;
 349         transport_loop_range_rect->property_y2() = full_canvas_height;
 350         transport_punch_range_rect->property_y1() = y1;
 351         transport_punch_range_rect->property_y2() = full_canvas_height;
 352         transport_punchin_line->property_y1() = y1;
 353         transport_punchin_line->property_y2() = full_canvas_height;
 354         transport_punchout_line->property_y1() = y1;
 355         transport_punchout_line->property_y2() = full_canvas_height;
 356
 357         update_fixed_rulers();
 358         redisplay_tempo (true);
 359
 360         Resized (); /* EMIT_SIGNAL */
 361
 362         return false;
 363 }
 364
 365 void
 366 Editor::reset_scrolling_region (Gtk::Allocation* alloc)
 367 {
 368         TreeModel::Children rows = route_display_model->children();
 369         TreeModel::Children::iterator i;
 370         double pos;
 371
 372         for (pos = 0, i = rows.begin(); i != rows.end(); ++i) {
 373                 TimeAxisView *tv = (*i)[route_display_columns.tv];
 374                 if (tv != 0 && !tv->hidden()) {
 375                         pos += tv->effective_height;
 376                 }
 377         }
 378
 379         double last_canvas_unit =  max ((last_canvas_frame / frames_per_unit), canvas_width);
 380
 381         track_canvas->set_scroll_region (0.0, 0.0, last_canvas_unit, pos);
 382
 383         // XXX what is the correct height value for the time canvas ? this overstates it
 384         time_canvas->set_scroll_region ( 0.0, 0.0, last_canvas_unit, canvas_height);
 385
 386         range_marker_drag_rect->property_y2() = canvas_height;
 387         transport_loop_range_rect->property_y2() = canvas_height;
 388         transport_punch_range_rect->property_y2() = canvas_height;
 389         transport_punchin_line->property_y2() = canvas_height;
 390         transport_punchout_line->property_y2() = canvas_height;
 391
 392         update_punch_range_view (true);
 393
 394         controls_layout.queue_resize();
 395 }
 396
 397 void
 398 Editor::controls_layout_size_request (Requisition* req)
 399 {
 400         TreeModel::Children rows = route_display_model->children();
 401         TreeModel::Children::iterator i;
 402         double pos;
 403
 404         for (pos = 0, i = rows.begin(); i != rows.end(); ++i) {
 405                 TimeAxisView *tv = (*i)[route_display_columns.tv];
 406                 if (tv != 0) {
 407                         pos += tv->effective_height;
 408                 }
 409         }
 410
 411         RefPtr<Gdk::Screen> screen = get_screen();
 412
 413         if (!screen) {
 414                 screen = Gdk::Screen::get_default();
 415         }
 416
 417         edit_controls_vbox.check_resize();
 418         req->width = max (edit_controls_vbox.get_width(),  controls_layout.get_width());
 419
 420         /* don't get too big. the fudge factors here are just guesses */
 421
 422         req->width = min (req->width, screen->get_width() - 300);
 423         req->height = min ((gint) pos, (screen->get_height() - 400));
 424
 425         /* this one is important: it determines how big the layout thinks it really is, as
 426            opposed to what it displays on the screen
 427         */
 428
 429         controls_layout.set_size (edit_controls_vbox.get_width(), (gint) pos);
 430         controls_layout.set_size_request(edit_controls_vbox.get_width(), -1);
 431         zoom_box.set_size_request(edit_controls_vbox.get_width(), -1);
 432         time_button_frame.set_size_request(edit_controls_vbox.get_width() + edit_vscrollbar.get_width(), -1);
 433
 434         //cerr << "sizes = " << req->width << " " << edit_controls_vbox.get_width() << " " << controls_layout.get_width() << " " << zoom_box.get_width() << " " << time_button_frame.get_width() << endl;//DEBUG
 435 }
 436
 437 bool
 438 Editor::track_canvas_map_handler (GdkEventAny* ev)
 439 {
 440         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
 441         return false;
 442 }
 443
 444 bool
 445 Editor::time_canvas_map_handler (GdkEventAny* ev)
 446 {
 447         time_canvas->get_window()->set_cursor (*timebar_cursor);
 448         return false;
 449 }
 450
 451 void
 452 Editor::track_canvas_drag_data_received (const RefPtr<Gdk::DragContext>& context,
 453                                          int x, int y,
 454                                          const SelectionData& data,
 455                                          guint info, guint time)
 456 {
 457         cerr << "drop on canvas, target = " << data.get_target() << endl;
 458
 459         if (data.get_target() == "regions") {
 460                 drop_regions (context, x, y, data, info, time);
 461         } else {
 462                 drop_paths (context, x, y, data, info, time);
 463         }
 464 }
 465
 466 void
 467 Editor::drop_paths (const RefPtr<Gdk::DragContext>& context,
 468                     int x, int y,
 469                     const SelectionData& data,
 470                     guint info, guint time)
 471 {
 472         TimeAxisView* tvp;
 473         AudioTimeAxisView* tv;
 474         double cy;
 475         vector<ustring> paths;
 476         string spath;
 477         GdkEvent ev;
 478         nframes64_t frame;
 479
 480         if (convert_drop_to_paths (paths, context, x, y, data, info, time)) {
 481                 goto out;
 482         }
 483
 484         /* D-n-D coordinates are window-relative, so convert to "world" coordinates
 485          */
 486
 487         double wx;
 488         double wy;
 489
 490         track_canvas->window_to_world (x, y, wx, wy);
 491         wx += horizontal_adjustment.get_value();
 492         wy += vertical_adjustment.get_value();
 493
 494         ev.type = GDK_BUTTON_RELEASE;
 495         ev.button.x = wx;
 496         ev.button.y = wy;
 497
 498         frame = event_frame (&ev, 0, &cy);
 499
 500         snap_to (frame);
 501
 502         if ((tvp = trackview_by_y_position (cy)) == 0) {
 503
 504                 /* drop onto canvas background: create new tracks */
 505
 506                 frame = 0;
 507
 508                 if (Profile->get_sae() || Config->get_only_copy_imported_files()) {
 509                         do_import (paths, Editing::ImportDistinctFiles, Editing::ImportAsTrack, SrcBest, frame);
 510                 } else {
 511                         do_embed (paths, Editing::ImportDistinctFiles, ImportAsTrack, frame);
 512                 }
 513
 514         } else if ((tv = dynamic_cast<AudioTimeAxisView*>(tvp)) != 0) {
 515
 516                 /* check that its an audio track, not a bus */
 517
 518                 if (tv->get_diskstream()) {
 519                         /* select the track, then embed */
 520                         selection->set (tv);
 521
 522                         if (Profile->get_sae() || Config->get_only_copy_imported_files()) {
 523                                 do_import (paths, Editing::ImportDistinctFiles, Editing::ImportToTrack, SrcBest, frame);
 524                         } else {
 525                                 do_embed (paths, Editing::ImportDistinctFiles, ImportToTrack, frame);
 526                         }
 527                 }
 528         }
 529
 530   out:
 531         context->drag_finish (true, false, time);
 532 }
 533
 534 void
 535 Editor::drop_regions (const RefPtr<Gdk::DragContext>& context,
 536                       int x, int y,
 537                       const SelectionData& data,
 538                       guint info, guint time)
 539 {
 540         const SerializedObjectPointers<boost::shared_ptr<Region> >* sr =
 541                 reinterpret_cast<const SerializedObjectPointers<boost::shared_ptr<Region> > *> (data.get_data());
 542
 543         for (uint32_t i = 0; i < sr->cnt; ++i) {
 544
 545                 boost::shared_ptr<Region> r = sr->data[i];
 546                 boost::shared_ptr<AudioRegion> ar;
 547
 548                 if ((ar = boost::dynamic_pointer_cast<AudioRegion>(r)) != 0) {
 549                         insert_region_list_drag (ar, x, y);
 550                 }
 551         }
 552
 553         context->drag_finish (true, false, time);
 554 }
 555
 556 void
 557 Editor::maybe_autoscroll (GdkEventMotion* event)
 558 {
 559         nframes_t rightmost_frame = leftmost_frame + current_page_frames();
 560         nframes_t frame = drag_info.current_pointer_frame;
 561         bool startit = false;
 562         double vertical_pos = vertical_adjustment.get_value();
 563
 564         autoscroll_y = 0;
 565         autoscroll_x = 0;
 566
 567         if (event->y < vertical_pos) {
 568                 autoscroll_y = -1;
 569                 startit = true;
 570         }
 571
 572         if (event->y > vertical_pos + canvas_height) {
 573                 autoscroll_y = 1;
 574                 startit = true;
 575         }
 576
 577         if (frame > rightmost_frame) {
 578
 579                 if (rightmost_frame < max_frames) {
 580                         autoscroll_x = 1;
 581                         startit = true;
 582                 }
 583
 584         } else if (frame < leftmost_frame) {
 585
 586                 if (leftmost_frame > 0) {
 587                         autoscroll_x = -1;
 588                         startit = true;
 589                 }
 590
 591         }
 592
 593         if ((autoscroll_x != last_autoscroll_x) || (autoscroll_y != last_autoscroll_y) || (autoscroll_x == 0 && autoscroll_y == 0)) {
 594                 stop_canvas_autoscroll ();
 595         }
 596
 597         if (startit && autoscroll_timeout_tag < 0) {
 598                 start_canvas_autoscroll (autoscroll_x, autoscroll_y);
 599         }
 600
 601         last_autoscroll_x = autoscroll_x;
 602         last_autoscroll_y = autoscroll_y;
 603 }
 604
 605 gint
 606 Editor::_autoscroll_canvas (void *arg)
 607 {
 608         return ((Editor *) arg)->autoscroll_canvas ();
 609 }
 610
 611 bool
 612 Editor::autoscroll_canvas ()
 613 {
 614         nframes_t new_frame;
 615         nframes_t limit = max_frames - current_page_frames();
 616         GdkEventMotion ev;
 617         nframes_t target_frame;
 618         double new_pixel;
 619         double target_pixel;
 620
 621         if (autoscroll_x < 0) {
 622                 if (leftmost_frame < autoscroll_x_distance) {
 623                         new_frame = 0;
 624                 } else {
 625                         new_frame = leftmost_frame - autoscroll_x_distance;
 626                 }
 627                 target_frame = drag_info.current_pointer_frame - autoscroll_x_distance;
 628         } else if (autoscroll_x > 0) {
 629                 if (leftmost_frame > limit - autoscroll_x_distance) {
 630                         new_frame = limit;
 631                 } else {
 632                         new_frame = leftmost_frame + autoscroll_x_distance;
 633                 }
 634                 target_frame = drag_info.current_pointer_frame + autoscroll_x_distance;
 635         } else {
 636                 target_frame = drag_info.current_pointer_frame;
 637                 new_frame = leftmost_frame;
 638         }
 639
 640         double vertical_pos = vertical_adjustment.get_value();
 641
 642         if (autoscroll_y < 0) {
 643
 644                 if (vertical_pos < autoscroll_y_distance) {
 645                         new_pixel = 0;
 646                 } else {
 647                         new_pixel = vertical_pos - autoscroll_y_distance;
 648                 }
 649
 650                 target_pixel = drag_info.current_pointer_y - autoscroll_y_distance;
 651                 target_pixel = max (target_pixel, 0.0);
 652
 653         } else if (autoscroll_y > 0) {
 654
 655                 double top_of_bottom_of_canvas = full_canvas_height - canvas_height;
 656
 657                 if (vertical_pos > full_canvas_height - autoscroll_y_distance) {
 658                         new_pixel = full_canvas_height;
 659                 } else {
 660                         new_pixel = vertical_pos + autoscroll_y_distance;
 661                 }
 662
 663                 new_pixel = min (top_of_bottom_of_canvas, new_pixel);
 664
 665                 target_pixel = drag_info.current_pointer_y + autoscroll_y_distance;
 666
 667                 /* don't move to the full canvas height because the item will be invisible
 668                    (its top edge will line up with the bottom of the visible canvas.
 669                 */
 670
 671                 target_pixel = min (target_pixel, full_canvas_height - 10);
 672
 673         } else {
 674                 target_pixel = drag_info.current_pointer_y;
 675                 new_pixel = vertical_pos;
 676         }
 677
 678         /* now fake a motion event to get the object that is being dragged to move too */
 679
 680         ev.type = GDK_MOTION_NOTIFY;
 681         ev.state &= Gdk::BUTTON1_MASK;
 682         ev.x = frame_to_unit (target_frame);
 683         ev.y = target_pixel;
 684         motion_handler (drag_info.item, (GdkEvent*) &ev, drag_info.item_type, true);
 685
 686         if ((new_frame == 0 || new_frame == limit) && (new_pixel == 0 || new_pixel == DBL_MAX)) {
 687                 /* we are done */
 688                 return false;
 689         }
 690
 691         autoscroll_cnt++;
 692
 693         if (autoscroll_cnt == 1) {
 694
 695                 /* connect the timeout so that we get called repeatedly */
 696
 697                 autoscroll_timeout_tag = g_idle_add ( _autoscroll_canvas, this);
 698                 return false;
 699
 700         }
 701
 702         if (new_frame != leftmost_frame) {
 703                 reset_x_origin (new_frame);
 704         }
 705
 706         vertical_adjustment.set_value (new_pixel);
 707
 708         if (autoscroll_x_distance != 0) {
 709
 710                 if (autoscroll_cnt == 50) { /* 0.5 seconds */
 711
 712                         /* after about a while, speed up a bit by changing the timeout interval */
 713
 714                         autoscroll_x_distance = (nframes_t) floor (current_page_frames()/30.0f);
 715
 716                 } else if (autoscroll_cnt == 150) { /* 1.0 seconds */
 717
 718                         autoscroll_x_distance = (nframes_t) floor (current_page_frames()/20.0f);
 719
 720                 } else if (autoscroll_cnt == 300) { /* 1.5 seconds */
 721
 722                         /* after about another while, speed up by increasing the shift per callback */
 723
 724                         autoscroll_x_distance =  (nframes_t) floor (current_page_frames()/10.0f);
 725
 726                 }
 727         }
 728
 729         if (autoscroll_y_distance != 0) {
 730
 731                 if (autoscroll_cnt == 50) { /* 0.5 seconds */
 732
 733                         /* after about a while, speed up a bit by changing the timeout interval */
 734
 735                         autoscroll_y_distance = 10;
 736
 737                 } else if (autoscroll_cnt == 150) { /* 1.0 seconds */
 738
 739                         autoscroll_y_distance = 20;
 740
 741                 } else if (autoscroll_cnt == 300) { /* 1.5 seconds */
 742
 743                         /* after about another while, speed up by increasing the shift per callback */
 744
 745                         autoscroll_y_distance =  40;
 746                 }
 747         }
 748
 749         return true;
 750 }
 751
 752 void
 753 Editor::start_canvas_autoscroll (int dx, int dy)
 754 {
 755         if (!session || autoscroll_active) {
 756                 return;
 757         }
 758
 759         stop_canvas_autoscroll ();
 760
 761         autoscroll_active = true;
 762         autoscroll_x = dx;
 763         autoscroll_y = dy;
 764         autoscroll_x_distance = (nframes_t) floor (current_page_frames()/50.0);
 765         autoscroll_y_distance = fabs (dy * 5); /* pixels */
 766         autoscroll_cnt = 0;
 767
 768         /* do it right now, which will start the repeated callbacks */
 769
 770         autoscroll_canvas ();
 771 }
 772
 773 void
 774 Editor::stop_canvas_autoscroll ()
 775 {
 776         if (autoscroll_timeout_tag >= 0) {
 777                 g_source_remove (autoscroll_timeout_tag);
 778                 autoscroll_timeout_tag = -1;
 779         }
 780
 781         autoscroll_active = false;
 782 }
 783
 784 bool
 785 Editor::left_track_canvas (GdkEventCrossing *ev)
 786 {
 787         set_entered_track (0);
 788         set_entered_regionview (0);
 789         reset_canvas_action_sensitivity (false);
 790         return false;
 791 }
 792
 793 bool
 794 Editor::entered_track_canvas (GdkEventCrossing *ev)
 795 {
 796         reset_canvas_action_sensitivity (true);
 797         return FALSE;
 798 }
 799
 800 void
 801 Editor::tie_vertical_scrolling ()
 802 {
 803         double y1 = vertical_adjustment.get_value();
 804
 805         playhead_cursor->set_y_axis (y1);
 806
 807         range_marker_drag_rect->property_y1() = y1;
 808         range_marker_drag_rect->property_y2() = full_canvas_height;
 809         transport_loop_range_rect->property_y1() = y1;
 810         transport_loop_range_rect->property_y2() = full_canvas_height;
 811         transport_punch_range_rect->property_y1() = y1;
 812         transport_punch_range_rect->property_y2() = full_canvas_height;
 813         transport_punchin_line->property_y1() = y1;
 814         transport_punchin_line->property_y2() = full_canvas_height;
 815         transport_punchout_line->property_y1() = y1;
 816         transport_punchout_line->property_y2() = full_canvas_height;
 817
 818         if (!selection->markers.empty()) {
 819                 for (MarkerSelection::iterator x = selection->markers.begin(); x != selection->markers.end(); ++x) {
 820                         (*x)->set_line_vpos (y1, canvas_height);
 821                 }
 822         }
 823
 824         if (logo_item) {
 825                 logo_item->property_y() = y1;
 826         }
 827
 828         /* this will do an immediate redraw */
 829
 830         controls_layout.get_vadjustment()->set_value (y1);
 831 }
 832
 833 void
 834 Editor::canvas_horizontally_scrolled ()
 835 {
 836         nframes64_t time_origin = (nframes_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
 837
 838         if (time_origin != leftmost_frame) {
 839                 canvas_scroll_to (time_origin);
 840         }
 841 }
 842
 843 void
 844 Editor::canvas_scroll_to (nframes64_t time_origin)
 845 {
 846         leftmost_frame = time_origin;
 847         nframes_t rightmost_frame = leftmost_frame + current_page_frames ();
 848
 849         if (rightmost_frame > last_canvas_frame) {
 850                 last_canvas_frame = rightmost_frame;
 851                 reset_scrolling_region ();
 852         }
 853
 854         if (logo_item) {
 855                 logo_item->property_x() = horizontal_adjustment.get_value ();
 856         }
 857
 858         update_fixed_rulers ();
 859
 860         redisplay_tempo (!_dragging_hscrollbar);
 861 }
 862
 863 void
 864 Editor::color_handler()
 865 {
 866         playhead_cursor->canvas_item.property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_PlayHead.get();
 867         verbose_canvas_cursor->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_VerboseCanvasCursor.get();
 868
 869         meter_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MeterBar.get();
 870         meter_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 871
 872         tempo_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TempoBar.get();
 873         tempo_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 874
 875         marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBar.get();
 876         marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 877
 878         cd_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CDMarkerBar.get();
 879         cd_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 880
 881         range_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeMarkerBar.get();
 882         range_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 883
 884         transport_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportMarkerBar.get();
 885         transport_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 886
 887         cd_marker_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 888         cd_marker_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 889
 890         range_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 891         range_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 892
 893         transport_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 894         transport_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 895
 896         marker_drag_line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerDragLine.get();
 897
 898         range_marker_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 899         range_marker_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 900
 901         transport_loop_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 902         transport_loop_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 903
 904         transport_punch_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 905         transport_punch_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 906
 907         transport_punchin_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 908         transport_punchout_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 909
 910         zoom_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 911         zoom_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 912
 913         rubberband_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 914         rubberband_rect->property_fill_color_rgba() = (guint32) ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 915
 916         location_marker_color = ARDOUR_UI::config()->canvasvar_LocationMarker.get();
 917         location_range_color = ARDOUR_UI::config()->canvasvar_LocationRange.get();
 918         location_cd_marker_color = ARDOUR_UI::config()->canvasvar_LocationCDMarker.get();
 919         location_loop_color = ARDOUR_UI::config()->canvasvar_LocationLoop.get();
 920         location_punch_color = ARDOUR_UI::config()->canvasvar_LocationPunch.get();
 921
 922         refresh_location_display ();
 923         redisplay_tempo (true);
 924
 925         if (session)
 926                 session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks); // redraw metric markers
 927 }
 928
 929 void
 930 Editor::flush_canvas ()
 931 {
 932         if (is_mapped()) {
 933                 track_canvas->update_now ();
 934                 // gdk_window_process_updates (GTK_LAYOUT(track_canvas->gobj())->bin_window, true);
 935         }
 936 }
 937