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