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