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 <jack/types.h>
  22 #include <gtkmm2ext/utils.h>
  23
  24 #include <ardour/audioregion.h>
  25 #include <ardour/profile.h>
  26
  27 #include "ardour_ui.h"
  28 #include "editor.h"
  29 #include "waveview.h"
  30 #include "simplerect.h"
  31 #include "simpleline.h"
  32 #include "waveview_p.h"
  33 #include "simplerect_p.h"
  34 #include "simpleline_p.h"
  35 #include "canvas_impl.h"
  36 #include "editing.h"
  37 #include "rgb_macros.h"
  38 #include "utils.h"
  39 #include "time_axis_view.h"
  40 #include "audio_time_axis.h"
  41
  42 #ifdef WITH_CMT
  43 #include "imageframe.h"
  44 #include "imageframe_p.h"
  45 #endif
  46
  47 #include "i18n.h"
  48
  49 using namespace std;
  50 using namespace sigc;
  51 using namespace ARDOUR;
  52 using namespace PBD;
  53 using namespace Gtk;
  54 using namespace Glib;
  55 using namespace Gtkmm2ext;
  56 using namespace Editing;
  57
  58 /* XXX this is a hack. it ought to be the maximum value of an nframes64_t */
  59
  60 const double max_canvas_coordinate = (double) JACK_MAX_FRAMES;
  61
  62 extern "C"
  63 {
  64
  65 GType gnome_canvas_simpleline_get_type(void);
  66 GType gnome_canvas_simplerect_get_type(void);
  67 GType gnome_canvas_waveview_get_type(void);
  68
  69 #ifdef WITH_CMT
  70 GType gnome_canvas_imageframe_get_type(void);
  71 #endif
  72
  73 }
  74
  75 static void ardour_canvas_type_init()
  76 {
  77         // Map gtypes to gtkmm wrapper-creation functions:
  78
  79         Glib::wrap_register(gnome_canvas_simpleline_get_type(), &Gnome::Canvas::SimpleLine_Class::wrap_new);
  80         Glib::wrap_register(gnome_canvas_simplerect_get_type(), &Gnome::Canvas::SimpleRect_Class::wrap_new);
  81         Glib::wrap_register(gnome_canvas_waveview_get_type(), &Gnome::Canvas::WaveView_Class::wrap_new);
  82
  83 #ifdef WITH_CMT
  84         Glib::wrap_register(gnome_canvas_imageframe_get_type(), &Gnome::Canvas::ImageFrame_Class::wrap_new);
  85 #endif
  86
  87         // Register the gtkmm gtypes:
  88
  89         (void) Gnome::Canvas::WaveView::get_type();
  90         (void) Gnome::Canvas::SimpleLine::get_type();
  91         (void) Gnome::Canvas::SimpleRect::get_type();
  92
  93 #ifdef WITH_CMT
  94         (void) Gnome::Canvas::ImageFrame::get_type();
  95 #endif
  96 }
  97
  98
  99 void
 100 Editor::initialize_canvas ()
 101 {
 102         if (getenv ("ARDOUR_NON_AA_CANVAS")) {
 103                 track_canvas = new ArdourCanvas::Canvas ();
 104         } else {
 105                 track_canvas = new ArdourCanvas::CanvasAA ();
 106         }
 107
 108         ArdourCanvas::init ();
 109         ardour_canvas_type_init ();
 110
 111         /* don't try to center the canvas */
 112
 113         track_canvas->set_center_scroll_region (false);
 114         track_canvas->set_dither (Gdk::RGB_DITHER_NONE);
 115
 116         Glib::RefPtr<Gdk::Screen> screen = get_screen();
 117
 118         if (!screen) {
 119                 screen = Gdk::Screen::get_default();
 120         }
 121         physical_screen_width = screen->get_width ();
 122         physical_screen_height = screen->get_height ();
 123
 124         /* stuff for the verbose canvas cursor */
 125
 126         Pango::FontDescription* font = get_font_for_style (N_("VerboseCanvasCursor"));
 127
 128         verbose_canvas_cursor = new ArdourCanvas::Text (*track_canvas->root());
 129         verbose_canvas_cursor->property_font_desc() = *font;
 130         verbose_canvas_cursor->property_anchor() = ANCHOR_NW;
 131
 132         delete font;
 133
 134         verbose_cursor_visible = false;
 135
 136         if (Profile->get_sae()) {
 137                 Image img (::get_icon (X_("saelogo")));
 138                 logo_item = new ArdourCanvas::Pixbuf (*track_canvas->root(), 0.0, 0.0, img.get_pixbuf());
 139                 // logo_item->property_height_in_pixels() = true;
 140                 // logo_item->property_width_in_pixels() = true;
 141                 // logo_item->property_height_set() = true;
 142                 // logo_item->property_width_set() = true;
 143                 logo_item->show ();
 144         }
 145
 146         _master_group = new ArdourCanvas::Group (*track_canvas->root(), 0.0, 0.0);
 147
 148         transport_loop_range_rect = new ArdourCanvas::SimpleRect (*_master_group, 0.0, 0.0, 0.0, physical_screen_width);
 149         transport_loop_range_rect->property_outline_pixels() = 1;
 150         transport_loop_range_rect->hide();
 151
 152         transport_punch_range_rect = new ArdourCanvas::SimpleRect (*_master_group, 0.0, 0.0, 0.0, physical_screen_width);
 153         transport_punch_range_rect->property_outline_pixels() = 0;
 154         transport_punch_range_rect->hide();
 155
 156         /* a group to hold time (measure) lines */
 157         time_line_group = new ArdourCanvas::Group (*_master_group, 0.0, 0.0);
 158
 159         range_marker_drag_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, physical_screen_width);
 160         range_marker_drag_rect->hide ();
 161
 162         _trackview_group = new ArdourCanvas::Group (*_master_group, 0.0, 0.0);
 163         _region_motion_group = new ArdourCanvas::Group (*_trackview_group, 0.0, 0.0);
 164
 165         /* el barrio */
 166
 167         meter_bar_group = new ArdourCanvas::Group (*track_canvas->root());
 168         meter_bar = new ArdourCanvas::SimpleRect (*meter_bar_group, 0.0, 0.0, physical_screen_width, timebar_height-1.0);
 169         meter_bar->property_outline_what() = (0x1 | 0x8);
 170         meter_bar->property_outline_pixels() = 1;
 171
 172         tempo_bar_group = new ArdourCanvas::Group (*track_canvas->root());
 173         tempo_bar = new ArdourCanvas::SimpleRect (*tempo_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height-1.0));
 174         tempo_bar->property_outline_what() = (0x1 | 0x8);
 175         tempo_bar->property_outline_pixels() = 1;
 176
 177         range_marker_bar_group = new ArdourCanvas::Group (*track_canvas->root());
 178         range_marker_bar = new ArdourCanvas::SimpleRect (*range_marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height-1.0));
 179         range_marker_bar->property_outline_what() = (0x1 | 0x8);
 180         range_marker_bar->property_outline_pixels() = 1;
 181
 182         transport_marker_bar_group = new ArdourCanvas::Group (*track_canvas->root());
 183         transport_marker_bar = new ArdourCanvas::SimpleRect (*transport_marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height-1.0));
 184         transport_marker_bar->property_outline_what() = (0x1 | 0x8);
 185         transport_marker_bar->property_outline_pixels() = 1;
 186
 187         marker_bar_group = new ArdourCanvas::Group (*track_canvas->root());
 188         marker_bar = new ArdourCanvas::SimpleRect (*marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height-1.0));
 189         marker_bar->property_outline_what() = (0x1 | 0x8);
 190         marker_bar->property_outline_pixels() = 1;
 191
 192         cd_marker_bar_group = new ArdourCanvas::Group (*track_canvas->root());
 193         cd_marker_bar = new ArdourCanvas::SimpleRect (*cd_marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height-1.0));
 194         cd_marker_bar->property_outline_what() = (0x1 | 0x8);
 195         cd_marker_bar->property_outline_pixels() = 1;
 196
 197         timebar_group =  new ArdourCanvas::Group (*track_canvas->root());
 198         cursor_group = new ArdourCanvas::Group (*track_canvas->root(), 0.0, 0.0);
 199
 200         meter_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height * 5.0);
 201         tempo_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height * 4.0);
 202         range_marker_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height * 3.0);
 203         transport_marker_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height * 2.0);
 204         marker_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height);
 205         cd_marker_group = new ArdourCanvas::Group (*timebar_group, 0.0, 0.0);
 206
 207         marker_drag_line_points.push_back(Gnome::Art::Point(0.0, 0.0));
 208         marker_drag_line_points.push_back(Gnome::Art::Point(0.0, 1.0));
 209
 210         marker_drag_line = new ArdourCanvas::Line (*timebar_group);
 211         marker_drag_line->property_width_pixels() = 1;
 212         marker_drag_line->property_points() = marker_drag_line_points;
 213         marker_drag_line->hide();
 214
 215         cd_marker_bar_drag_rect = new ArdourCanvas::SimpleRect (*cd_marker_group, 0.0, 0.0, 100, timebar_height);
 216         cd_marker_bar_drag_rect->property_outline_pixels() = 0;
 217         cd_marker_bar_drag_rect->hide ();
 218
 219         range_bar_drag_rect = new ArdourCanvas::SimpleRect (*range_marker_group, 0.0, 0.0, 100, timebar_height);
 220         range_bar_drag_rect->property_outline_pixels() = 0;
 221         range_bar_drag_rect->hide ();
 222
 223         transport_bar_drag_rect = new ArdourCanvas::SimpleRect (*transport_marker_group, 0.0, 0.0, 100, timebar_height);
 224         transport_bar_drag_rect->property_outline_pixels() = 0;
 225         transport_bar_drag_rect->hide ();
 226
 227         transport_punchin_line = new ArdourCanvas::SimpleLine (*_master_group);
 228         transport_punchin_line->property_x1() = 0.0;
 229         transport_punchin_line->property_y1() = 0.0;
 230         transport_punchin_line->property_x2() = 0.0;
 231         transport_punchin_line->property_y2() = physical_screen_width;
 232         transport_punchin_line->hide ();
 233
 234         transport_punchout_line = new ArdourCanvas::SimpleLine (*_master_group);
 235         transport_punchout_line->property_x1() = 0.0;
 236         transport_punchout_line->property_y1() = 0.0;
 237         transport_punchout_line->property_x2() = 0.0;
 238         transport_punchout_line->property_y2() = physical_screen_width;
 239         transport_punchout_line->hide();
 240
 241         // used to show zoom mode active zooming
 242         zoom_rect = new ArdourCanvas::SimpleRect (*_master_group, 0.0, 0.0, 0.0, 0.0);
 243         zoom_rect->property_outline_pixels() = 1;
 244         zoom_rect->hide();
 245
 246         zoom_rect->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_zoom_rect_event), (ArdourCanvas::Item*) 0));
 247
 248         // used as rubberband rect
 249         rubberband_rect = new ArdourCanvas::SimpleRect (*_trackview_group, 0.0, 0.0, 0.0, 0.0);
 250
 251         rubberband_rect->property_outline_pixels() = 1;
 252         rubberband_rect->hide();
 253
 254         tempo_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_tempo_bar_event), tempo_bar));
 255         meter_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_meter_bar_event), meter_bar));
 256         marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_marker_bar_event), marker_bar));
 257         cd_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_cd_marker_bar_event), cd_marker_bar));
 258         range_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_range_marker_bar_event), range_marker_bar));
 259         transport_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_transport_marker_bar_event), transport_marker_bar));
 260
 261         playhead_cursor = new Cursor (*this, &Editor::canvas_playhead_cursor_event);
 262
 263         if (logo_item) {
 264                 logo_item->lower_to_bottom ();
 265         }
 266
 267         /* need to handle 4 specific types of events as catch-alls */
 268
 269         track_canvas->signal_scroll_event().connect (mem_fun (*this, &Editor::track_canvas_scroll_event));
 270         track_canvas->signal_motion_notify_event().connect (mem_fun (*this, &Editor::track_canvas_motion_notify_event));
 271         track_canvas->signal_button_press_event().connect (mem_fun (*this, &Editor::track_canvas_button_press_event));
 272         track_canvas->signal_button_release_event().connect (mem_fun (*this, &Editor::track_canvas_button_release_event));
 273
 274         track_canvas->set_name ("EditorMainCanvas");
 275         track_canvas->add_events (Gdk::POINTER_MOTION_HINT_MASK|Gdk::SCROLL_MASK);
 276         track_canvas->signal_leave_notify_event().connect (mem_fun(*this, &Editor::left_track_canvas));
 277         track_canvas->signal_enter_notify_event().connect (mem_fun(*this, &Editor::entered_track_canvas));
 278         track_canvas->set_flags (CAN_FOCUS);
 279
 280         /* set up drag-n-drop */
 281
 282         vector<TargetEntry> target_table;
 283
 284         // Drag-N-Drop from the region list can generate this target
 285         target_table.push_back (TargetEntry ("regions"));
 286         target_table.push_back (TargetEntry ("routes"));
 287
 288         target_table.push_back (TargetEntry ("text/plain"));
 289         target_table.push_back (TargetEntry ("text/uri-list"));
 290         target_table.push_back (TargetEntry ("application/x-rootwin-drop"));
 291
 292         track_canvas->drag_dest_set (target_table);
 293         track_canvas->signal_drag_data_received().connect (mem_fun(*this, &Editor::track_canvas_drag_data_received));
 294
 295         track_canvas->signal_size_allocate().connect (mem_fun(*this, &Editor::track_canvas_allocate));
 296
 297         ColorsChanged.connect (mem_fun (*this, &Editor::color_handler));
 298         color_handler();
 299
 300 }
 301
 302 void
 303 Editor::track_canvas_allocate (Gtk::Allocation alloc)
 304 {
 305         canvas_allocation = alloc;
 306         track_canvas_size_allocated ();
 307 }
 308
 309 bool
 310 Editor::track_canvas_size_allocated ()
 311 {
 312         bool height_changed = canvas_height != canvas_allocation.get_height();
 313
 314         canvas_width = canvas_allocation.get_width();
 315         canvas_height = canvas_allocation.get_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                         (*i)->clip_to_viewport ();
 326                 }
 327
 328                 full_canvas_height = height + canvas_timebars_vsize;
 329         } else {
 330                 return true;
 331         }
 332
 333         if (height_changed) {
 334                 if (playhead_cursor) {
 335                         playhead_cursor->set_length (canvas_height);
 336                 }
 337
 338                 vertical_adjustment.set_page_size (canvas_height);
 339
 340                 for (MarkerSelection::iterator x = selection->markers.begin(); x != selection->markers.end(); ++x) {
 341                         (*x)->set_line_vpos (0, canvas_height);
 342                 }
 343
 344                 vertical_adjustment.set_page_size (canvas_height);
 345                 last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
 346                 if ((vertical_adjustment.get_value() + canvas_height) >= vertical_adjustment.get_upper()) {
 347                         /*
 348                            We're increasing the size of the canvas while the bottom is visible.
 349                            We scroll down to keep in step with the controls layout.
 350                         */
 351                         vertical_adjustment.set_value (full_canvas_height - canvas_height + 1);
 352                 }
 353
 354
 355         }
 356
 357         handle_new_duration ();
 358         reset_hscrollbar_stepping ();
 359         update_fixed_rulers();
 360         redisplay_tempo (false);
 361
 362         Resized (); /* EMIT_SIGNAL */
 363
 364         return false;
 365 }
 366
 367 void
 368 Editor::controls_layout_size_request (Requisition* req)
 369 {
 370         TreeModel::Children rows = route_display_model->children();
 371         TreeModel::Children::iterator i;
 372         double pos;
 373         bool changed = false;
 374
 375         for (pos = 0, i = rows.begin(); i != rows.end(); ++i) {
 376                 TimeAxisView *tv = (*i)[route_display_columns.tv];
 377                 if (tv != 0) {
 378                         pos += tv->effective_height;
 379                         tv->clip_to_viewport ();
 380                 }
 381         }
 382
 383         gint height = min ( (gint) pos, (gint) (physical_screen_height - 600));
 384         gint width = max (edit_controls_vbox.get_width(),  controls_layout.get_width());
 385
 386         /* don't get too big. the fudge factors here are just guesses */
 387
 388         width =  min (width, (gint) (physical_screen_width - 300));
 389
 390         if ((req->width != width) || (req->height != height)) {
 391                 changed = true;
 392                 controls_layout_size_request_connection.disconnect ();
 393         }
 394
 395         if (req->width != width) {
 396                 gint vbox_width = edit_controls_vbox.get_width();
 397                 req->width = width;
 398
 399                 /* this one is important: it determines how big the layout thinks it really is, as
 400                    opposed to what it displays on the screen
 401                 */
 402                 controls_layout.property_width () = vbox_width;
 403                 controls_layout.property_width_request () = vbox_width;
 404
 405                 time_button_event_box.property_width_request () = vbox_width;
 406                 zoom_box.property_width_request () = vbox_width;
 407         }
 408
 409         if (req->height != height) {
 410                 req->height = height;
 411                 controls_layout.property_height () = (guint) floor (pos);
 412         }
 413
 414         if (changed) {
 415                 controls_layout_size_request_connection = controls_layout.signal_size_request().connect (mem_fun (*this, &Editor::controls_layout_size_request));
 416         }
 417 }
 418
 419 bool
 420 Editor::track_canvas_map_handler (GdkEventAny* ev)
 421 {
 422         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
 423         return false;
 424 }
 425
 426 void
 427 Editor::track_canvas_drag_data_received (const RefPtr<Gdk::DragContext>& context,
 428                                          int x, int y,
 429                                          const SelectionData& data,
 430                                          guint info, guint time)
 431 {
 432         cerr << "drop on canvas, target = " << data.get_target() << endl;
 433
 434         if (data.get_target() == "regions") {
 435                 drop_regions (context, x, y, data, info, time);
 436         }
 437         else if(data.get_target() == "routes") {
 438                 drop_routes (context, x, y, data, info, time);
 439         }
 440         else {
 441                 drop_paths (context, x, y, data, info, time);
 442         }
 443 }
 444
 445 void
 446 Editor::drop_paths (const RefPtr<Gdk::DragContext>& context,
 447                     int x, int y,
 448                     const SelectionData& data,
 449                     guint info, guint time)
 450 {
 451         TimeAxisView* tvp;
 452         RouteTimeAxisView* tv;
 453         double cy;
 454         vector<ustring> paths;
 455         string spath;
 456         GdkEvent ev;
 457         nframes64_t frame;
 458
 459         if (convert_drop_to_paths (paths, context, x, y, data, info, time)) {
 460                 goto out;
 461         }
 462
 463         /* D-n-D coordinates are window-relative, so convert to "world" coordinates
 464          */
 465
 466         double wx;
 467         double wy;
 468
 469         track_canvas->window_to_world (x, y, wx, wy);
 470         //wx += horizontal_adjustment.get_value();
 471         //wy += vertical_adjustment.get_value();
 472
 473         ev.type = GDK_BUTTON_RELEASE;
 474         ev.button.x = wx;
 475         ev.button.y = wy;
 476
 477         frame = event_frame (&ev, 0, &cy);
 478
 479         snap_to (frame);
 480
 481         if ((tvp = trackview_by_y_position (cy)) == 0) {
 482
 483                 /* drop onto canvas background: create new tracks */
 484
 485                 frame = 0;
 486
 487                 if (Profile->get_sae() || Config->get_only_copy_imported_files()) {
 488                         do_import (paths, Editing::ImportDistinctFiles, Editing::ImportAsTrack, SrcBest, frame);
 489                 } else {
 490                         do_embed (paths, Editing::ImportDistinctFiles, ImportAsTrack, frame);
 491                 }
 492
 493         } else if ((tv = dynamic_cast<RouteTimeAxisView*>(tvp)) != 0) {
 494
 495                 /* check that its an audio track, not a bus */
 496
 497                 /* check that its an audio track, not a bus */
 498
 499                 if (tv->get_diskstream()) {
 500                         /* select the track, then embed */
 501                         selection->set (tv);
 502
 503                         if (Profile->get_sae() || Config->get_only_copy_imported_files()) {
 504                                 do_import (paths, Editing::ImportDistinctFiles, Editing::ImportToTrack, SrcBest, frame);
 505                         } else {
 506                                 do_embed (paths, Editing::ImportDistinctFiles, ImportToTrack, frame);
 507                         }
 508                 }
 509         }
 510
 511   out:
 512         context->drag_finish (true, false, time);
 513 }
 514
 515 void
 516 Editor::drop_regions (const RefPtr<Gdk::DragContext>& context,
 517                       int x, int y,
 518                       const SelectionData& data,
 519                       guint info, guint time)
 520 {
 521         const SerializedObjectPointers<boost::shared_ptr<Region> >* sr =
 522                 reinterpret_cast<const SerializedObjectPointers<boost::shared_ptr<Region> > *> (data.get_data());
 523
 524         for (uint32_t i = 0; i < sr->cnt; ++i) {
 525
 526                 boost::shared_ptr<Region> r = sr->data[i];
 527
 528                 insert_region_list_drag (r, x, y);
 529         }
 530
 531         context->drag_finish (true, false, time);
 532 }
 533
 534 void
 535 Editor::drop_routes (const Glib::RefPtr<Gdk::DragContext>& context,
 536                      int x, int y,
 537                      const Gtk::SelectionData& data,
 538                      guint info, guint time) {
 539         const SerializedObjectPointers<boost::shared_ptr<Route> >* sr =
 540                 reinterpret_cast<const SerializedObjectPointers<boost::shared_ptr<Route> > *> (data.get_data());
 541
 542         for (uint32_t i = 0; i < sr->cnt; ++i) {
 543                 boost::shared_ptr<Route> r = sr->data[i];
 544                 insert_route_list_drag (r, x, y);
 545         }
 546
 547         context->drag_finish (true, false, time);
 548 }
 549
 550 void
 551 Editor::maybe_autoscroll (GdkEventMotion* event)
 552 {
 553
 554         nframes64_t rightmost_frame = leftmost_frame + current_page_frames();
 555         nframes64_t frame = drag_info.current_pointer_frame;
 556         bool startit = false;
 557
 558         autoscroll_y = 0;
 559         autoscroll_x = 0;
 560         if (event->y < canvas_timebars_vsize) {
 561                 autoscroll_y = -1;
 562                 startit = true;
 563         } else if (event->y > canvas_height) {
 564                 autoscroll_y = 1;
 565                 startit = true;
 566         }
 567
 568         if (frame > rightmost_frame) {
 569
 570                 if (rightmost_frame < max_frames) {
 571                         autoscroll_x = 1;
 572                         startit = true;
 573                 }
 574
 575         } else if (frame < leftmost_frame) {
 576                 if (leftmost_frame > 0) {
 577                         autoscroll_x = -1;
 578                         startit = true;
 579                 }
 580
 581         }
 582
 583         if (!allow_vertical_scroll) {
 584                 autoscroll_y = 0;
 585         }
 586
 587         if ((autoscroll_x != last_autoscroll_x) || (autoscroll_y != last_autoscroll_y) || (autoscroll_x == 0 && autoscroll_y == 0)) {
 588                 stop_canvas_autoscroll ();
 589         }
 590
 591         if (startit && autoscroll_timeout_tag < 0) {
 592                 start_canvas_autoscroll (autoscroll_x, autoscroll_y);
 593         }
 594
 595         last_autoscroll_x = autoscroll_x;
 596         last_autoscroll_y = autoscroll_y;
 597 }
 598
 599 void
 600 Editor::maybe_autoscroll_horizontally (GdkEventMotion* event)
 601 {
 602         nframes64_t rightmost_frame = leftmost_frame + current_page_frames();
 603         nframes64_t frame = drag_info.current_pointer_frame;
 604         bool startit = false;
 605
 606         autoscroll_y = 0;
 607         autoscroll_x = 0;
 608
 609         if (frame > rightmost_frame) {
 610
 611                 if (rightmost_frame < max_frames) {
 612                         autoscroll_x = 1;
 613                         startit = true;
 614                 }
 615
 616         } else if (frame < leftmost_frame) {
 617                 if (leftmost_frame > 0) {
 618                         autoscroll_x = -1;
 619                         startit = true;
 620                 }
 621
 622         }
 623
 624         if ((autoscroll_x != last_autoscroll_x) || (autoscroll_y != last_autoscroll_y) || (autoscroll_x == 0 && autoscroll_y == 0)) {
 625                 stop_canvas_autoscroll ();
 626         }
 627
 628         if (startit && autoscroll_timeout_tag < 0) {
 629                 start_canvas_autoscroll (autoscroll_x, autoscroll_y);
 630         }
 631
 632         last_autoscroll_x = autoscroll_x;
 633         last_autoscroll_y = autoscroll_y;
 634 }
 635
 636 gint
 637 Editor::_autoscroll_canvas (void *arg)
 638 {
 639         return ((Editor *) arg)->autoscroll_canvas ();
 640 }
 641
 642 bool
 643 Editor::autoscroll_canvas ()
 644 {
 645         nframes64_t new_frame;
 646         nframes64_t limit = max_frames - current_page_frames();
 647         GdkEventMotion ev;
 648         double new_pixel;
 649         double target_pixel;
 650
 651         if (autoscroll_x > 0) {
 652                 autoscroll_x_distance = (unit_to_frame (drag_info.current_pointer_x) - (leftmost_frame + current_page_frames())) / 3;
 653         } else if (autoscroll_x < 0) {
 654                 autoscroll_x_distance = (leftmost_frame - unit_to_frame (drag_info.current_pointer_x)) / 3;
 655
 656         }
 657
 658         if (autoscroll_y > 0) {
 659                 autoscroll_y_distance = (drag_info.current_pointer_y - (get_trackview_group_vertical_offset() + canvas_height)) / 3;
 660         } else if (autoscroll_y < 0) {
 661
 662                 autoscroll_y_distance = (vertical_adjustment.get_value () - drag_info.current_pointer_y) / 3;
 663         }
 664
 665         if (autoscroll_x < 0) {
 666                 if (leftmost_frame < autoscroll_x_distance) {
 667                         new_frame = 0;
 668                 } else {
 669                         new_frame = leftmost_frame - autoscroll_x_distance;
 670                 }
 671         } else if (autoscroll_x > 0) {
 672                 if (leftmost_frame > limit - autoscroll_x_distance) {
 673                         new_frame = limit;
 674                 } else {
 675                         new_frame = leftmost_frame + autoscroll_x_distance;
 676                 }
 677         } else {
 678                 new_frame = leftmost_frame;
 679         }
 680
 681         double vertical_pos = vertical_adjustment.get_value();
 682
 683         if (autoscroll_y < 0) {
 684
 685                 if (vertical_pos < autoscroll_y_distance) {
 686                         new_pixel = 0;
 687                 } else {
 688                         new_pixel = vertical_pos - autoscroll_y_distance;
 689                 }
 690
 691                 target_pixel = drag_info.current_pointer_y - autoscroll_y_distance;
 692                 target_pixel = max (target_pixel, 0.0);
 693
 694         } else if (autoscroll_y > 0) {
 695
 696                 double top_of_bottom_of_canvas = full_canvas_height - canvas_height;
 697
 698                 if (vertical_pos > full_canvas_height - autoscroll_y_distance) {
 699                         new_pixel = full_canvas_height;
 700                 } else {
 701                         new_pixel = vertical_pos + autoscroll_y_distance;
 702                 }
 703
 704                 new_pixel = min (top_of_bottom_of_canvas, new_pixel);
 705
 706                 target_pixel = drag_info.current_pointer_y + autoscroll_y_distance;
 707
 708                 /* don't move to the full canvas height because the item will be invisible
 709                    (its top edge will line up with the bottom of the visible canvas.
 710                 */
 711
 712                 target_pixel = min (target_pixel, full_canvas_height - 10);
 713
 714         } else {
 715                 target_pixel = drag_info.current_pointer_y;
 716                 new_pixel = vertical_pos;
 717         }
 718
 719         if ((new_frame == 0 || new_frame == limit) && (new_pixel == 0 || new_pixel == DBL_MAX)) {
 720                 /* we are done */
 721                 return false;
 722         }
 723
 724         if (new_frame != leftmost_frame) {
 725                 reset_x_origin (new_frame);
 726         }
 727
 728         /* fake an event. */
 729
 730         Glib::RefPtr<Gdk::Window> canvas_window = const_cast<Editor*>(this)->track_canvas->get_window();
 731         gint x, y;
 732         Gdk::ModifierType mask;
 733         canvas_window->get_pointer (x, y, mask);
 734         ev.type = GDK_MOTION_NOTIFY;
 735         ev.state &= Gdk::BUTTON1_MASK;
 736         ev.x = x;
 737         ev.y = y;
 738
 739         motion_handler (drag_info.item, (GdkEvent*) &ev, drag_info.item_type, true);
 740
 741         vertical_adjustment.set_value (new_pixel);
 742
 743         autoscroll_cnt++;
 744
 745         if (autoscroll_cnt == 1) {
 746
 747                 /* connect the timeout so that we get called repeatedly */
 748
 749                 autoscroll_timeout_tag = g_idle_add ( _autoscroll_canvas, this);
 750                 return false;
 751
 752         }
 753
 754         return true;
 755 }
 756
 757 void
 758 Editor::start_canvas_autoscroll (int dx, int dy)
 759 {
 760         if (!session || autoscroll_active) {
 761                 return;
 762         }
 763
 764         stop_canvas_autoscroll ();
 765
 766         autoscroll_active = true;
 767         autoscroll_x = dx;
 768         autoscroll_y = dy;
 769         autoscroll_x_distance = (nframes64_t) floor (current_page_frames()/50.0);
 770         autoscroll_y_distance = fabs (dy * 5); /* pixels */
 771         autoscroll_cnt = 0;
 772
 773         /* do it right now, which will start the repeated callbacks */
 774
 775         autoscroll_canvas ();
 776 }
 777
 778 void
 779 Editor::stop_canvas_autoscroll ()
 780 {
 781
 782         if (autoscroll_timeout_tag >= 0) {
 783                 g_source_remove (autoscroll_timeout_tag);
 784                 autoscroll_timeout_tag = -1;
 785         }
 786
 787         autoscroll_active = false;
 788 }
 789
 790 bool
 791 Editor::left_track_canvas (GdkEventCrossing *ev)
 792 {
 793         set_entered_track (0);
 794         set_entered_regionview (0);
 795         reset_canvas_action_sensitivity (false);
 796         return false;
 797 }
 798
 799 bool
 800 Editor::entered_track_canvas (GdkEventCrossing *ev)
 801 {
 802         reset_canvas_action_sensitivity (true);
 803         return FALSE;
 804 }
 805
 806 void
 807 Editor::tie_vertical_scrolling ()
 808 {
 809         scroll_canvas_vertically ();
 810
 811         /* this will do an immediate redraw */
 812
 813         controls_layout.get_vadjustment()->set_value (vertical_adjustment.get_value());
 814 }
 815
 816 void
 817 Editor::scroll_canvas_horizontally ()
 818 {
 819         nframes64_t time_origin = (nframes64_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
 820
 821         if (time_origin != leftmost_frame) {
 822                 canvas_scroll_to (time_origin);
 823         }
 824
 825         /* horizontal scrolling only */
 826         double x1, x2, y1, y2, x_delta;
 827
 828         _master_group->get_bounds(x1, y1, x2, y2);
 829         x_delta = x1 + horizontal_adjustment.get_value();
 830
 831         _master_group->move (-x_delta, 0);
 832         timebar_group->move (-x_delta, 0);
 833         cursor_group->move (-x_delta, 0);
 834         update_fixed_rulers ();
 835         redisplay_tempo (true);
 836 }
 837
 838 void
 839 Editor::scroll_canvas_vertically ()
 840 {
 841         /* vertical scrolling only */
 842         double y_delta;
 843
 844         y_delta = last_trackview_group_vertical_offset - get_trackview_group_vertical_offset ();
 845
 846         _trackview_group->move (0, y_delta);
 847
 848         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
 849                 (*i)->clip_to_viewport ();
 850         }
 851         last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
 852         /* required to keep the controls_layout in lock step with the canvas group */
 853         track_canvas->update_now ();
 854 }
 855
 856 void
 857 Editor::canvas_horizontally_scrolled ()
 858 {
 859         nframes64_t time_origin = (nframes64_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
 860
 861         if (time_origin != leftmost_frame) {
 862                 canvas_scroll_to (time_origin);
 863         }
 864         redisplay_tempo (true);
 865 }
 866
 867 void
 868 Editor::canvas_scroll_to (nframes64_t time_origin)
 869 {
 870         leftmost_frame = time_origin;
 871 }
 872
 873 void
 874 Editor::color_handler()
 875 {
 876         playhead_cursor->canvas_item.property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_PlayHead.get();
 877         verbose_canvas_cursor->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_VerboseCanvasCursor.get();
 878
 879         meter_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MeterBar.get();
 880         meter_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 881
 882         tempo_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TempoBar.get();
 883         tempo_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 884
 885         marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBar.get();
 886         marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 887
 888         cd_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CDMarkerBar.get();
 889         cd_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 890
 891         range_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeMarkerBar.get();
 892         range_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 893
 894         transport_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportMarkerBar.get();
 895         transport_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 896
 897         cd_marker_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 898         cd_marker_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 899
 900         range_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 901         range_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 902
 903         transport_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 904         transport_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 905
 906         marker_drag_line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerDragLine.get();
 907
 908         range_marker_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 909         range_marker_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 910
 911         transport_loop_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 912         transport_loop_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 913
 914         transport_punch_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 915         transport_punch_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 916
 917         transport_punchin_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 918         transport_punchout_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 919
 920         zoom_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 921         zoom_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 922
 923         rubberband_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 924         rubberband_rect->property_fill_color_rgba() = (guint32) ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 925
 926         location_marker_color = ARDOUR_UI::config()->canvasvar_LocationMarker.get();
 927         location_range_color = ARDOUR_UI::config()->canvasvar_LocationRange.get();
 928         location_cd_marker_color = ARDOUR_UI::config()->canvasvar_LocationCDMarker.get();
 929         location_loop_color = ARDOUR_UI::config()->canvasvar_LocationLoop.get();
 930         location_punch_color = ARDOUR_UI::config()->canvasvar_LocationPunch.get();
 931
 932         refresh_location_display ();
 933 /*
 934         redisplay_tempo (true);
 935
 936         if (session)
 937                 session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks); // redraw metric markers
 938 */
 939 }
 940
 941 void
 942 Editor::flush_canvas ()
 943 {
 944         if (is_mapped()) {
 945                 track_canvas->update_now ();
 946                 // gdk_window_process_updates (GTK_LAYOUT(track_canvas->gobj())->bin_window, true);
 947         }
 948 }