gtk2_ardour/editor_canvas.cc

   1 /*
   2     Copyright (C) 2005 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <libgnomecanvasmm/init.h>
  21 #include <libgnomecanvasmm/pixbuf.h>
  22 #include <jack/types.h>
  23 #include <gtkmm2ext/utils.h>
  24
  25 #include <ardour/audioregion.h>
  26 #include <ardour/profile.h>
  27
  28 #include "ardour_ui.h"
  29 #include "editor.h"
  30 #include "waveview.h"
  31 #include "simplerect.h"
  32 #include "simpleline.h"
  33 #include "imageframe.h"
  34 #include "waveview_p.h"
  35 #include "simplerect_p.h"
  36 #include "simpleline_p.h"
  37 #include "imageframe_p.h"
  38 #include "canvas_impl.h"
  39 #include "editing.h"
  40 #include "rgb_macros.h"
  41 #include "utils.h"
  42 #include "time_axis_view.h"
  43 #include "audio_time_axis.h"
  44
  45 #include "i18n.h"
  46
  47 using namespace std;
  48 using namespace sigc;
  49 using namespace ARDOUR;
  50 using namespace PBD;
  51 using namespace Gtk;
  52 using namespace Glib;
  53 using namespace Gtkmm2ext;
  54 using namespace Editing;
  55
  56 /* XXX this is a hack. it ought to be the maximum value of an nframes_t */
  57
  58 const double max_canvas_coordinate = (double) JACK_MAX_FRAMES;
  59
  60 extern "C"
  61 {
  62
  63 GType gnome_canvas_simpleline_get_type(void);
  64 GType gnome_canvas_simplerect_get_type(void);
  65 GType gnome_canvas_waveview_get_type(void);
  66 GType gnome_canvas_imageframe_get_type(void);
  67
  68 }
  69
  70 static void ardour_canvas_type_init()
  71 {
  72         // Map gtypes to gtkmm wrapper-creation functions:
  73
  74         Glib::wrap_register(gnome_canvas_simpleline_get_type(), &Gnome::Canvas::SimpleLine_Class::wrap_new);
  75         Glib::wrap_register(gnome_canvas_simplerect_get_type(), &Gnome::Canvas::SimpleRect_Class::wrap_new);
  76         Glib::wrap_register(gnome_canvas_waveview_get_type(), &Gnome::Canvas::WaveView_Class::wrap_new);
  77         Glib::wrap_register(gnome_canvas_imageframe_get_type(), &Gnome::Canvas::ImageFrame_Class::wrap_new);
  78
  79         // Register the gtkmm gtypes:
  80
  81         (void) Gnome::Canvas::WaveView::get_type();
  82         (void) Gnome::Canvas::SimpleLine::get_type();
  83         (void) Gnome::Canvas::SimpleRect::get_type();
  84         (void) Gnome::Canvas::ImageFrame::get_type();
  85 }
  86
  87 void
  88 Editor::initialize_canvas ()
  89 {
  90         if (getenv ("ARDOUR_NON_AA_CANVAS")) {
  91                 track_canvas = new ArdourCanvas::Canvas ();
  92                 time_canvas = new ArdourCanvas::Canvas ();
  93         } else {
  94                 track_canvas = new ArdourCanvas::CanvasAA ();
  95                 time_canvas = new ArdourCanvas::CanvasAA ();
  96         }
  97
  98         ArdourCanvas::init ();
  99         ardour_canvas_type_init ();
 100
 101         /* don't try to center the canvas */
 102
 103         track_canvas->set_center_scroll_region (false);
 104         track_canvas->set_dither        (Gdk::RGB_DITHER_NONE);
 105
 106         /* need to handle 4 specific types of events as catch-alls */
 107
 108         track_canvas->signal_scroll_event().connect (mem_fun (*this, &Editor::track_canvas_scroll_event));
 109         track_canvas->signal_motion_notify_event().connect (mem_fun (*this, &Editor::track_canvas_motion_notify_event));
 110         track_canvas->signal_button_press_event().connect (mem_fun (*this, &Editor::track_canvas_button_press_event));
 111         track_canvas->signal_button_release_event().connect (mem_fun (*this, &Editor::track_canvas_button_release_event));
 112
 113         /* just scroll stuff for the timecanvas */
 114         time_canvas->signal_scroll_event().connect (mem_fun (*this, &Editor::time_canvas_scroll_event));
 115
 116         track_canvas->set_name ("EditorMainCanvas");
 117         track_canvas->add_events (Gdk::POINTER_MOTION_HINT_MASK|Gdk::SCROLL_MASK);
 118         track_canvas->signal_leave_notify_event().connect (mem_fun(*this, &Editor::left_track_canvas));
 119         track_canvas->set_flags (CAN_FOCUS);
 120
 121         /* set up drag-n-drop */
 122
 123         vector<TargetEntry> target_table;
 124
 125         // Drag-N-Drop from the region list can generate this target
 126         target_table.push_back (TargetEntry ("regions"));
 127
 128         target_table.push_back (TargetEntry ("text/plain"));
 129         target_table.push_back (TargetEntry ("text/uri-list"));
 130         target_table.push_back (TargetEntry ("application/x-rootwin-drop"));
 131
 132         track_canvas->drag_dest_set (target_table);
 133         track_canvas->signal_drag_data_received().connect (mem_fun(*this, &Editor::track_canvas_drag_data_received));
 134
 135         /* stuff for the verbose canvas cursor */
 136
 137         Pango::FontDescription* font = get_font_for_style (N_("VerboseCanvasCursor"));
 138
 139         verbose_canvas_cursor = new ArdourCanvas::Text (*track_canvas->root());
 140         verbose_canvas_cursor->property_font_desc() = *font;
 141         verbose_canvas_cursor->property_anchor() = ANCHOR_NW;
 142
 143         delete font;
 144
 145         verbose_cursor_visible = false;
 146
 147         /* on the bottom, an image */
 148
 149         if (Profile->get_sae()) {
 150                 Image img (::get_icon (X_("saelogo")));
 151                 logo_item = new ArdourCanvas::Pixbuf (*track_canvas->root(), 0.0, 0.0, img.get_pixbuf());
 152                 // logo_item->property_height_in_pixels() = true;
 153                 // logo_item->property_width_in_pixels() = true;
 154                 // logo_item->property_height_set() = true;
 155                 // logo_item->property_width_set() = true;
 156                 logo_item->show ();
 157         }
 158
 159         /* a group to hold time (measure) lines */
 160
 161         time_line_group = new ArdourCanvas::Group (*track_canvas->root(), 0.0, 0.0);
 162         cursor_group = new ArdourCanvas::Group (*track_canvas->root(), 0.0, 0.0);
 163
 164         time_canvas->set_name ("EditorTimeCanvas");
 165         time_canvas->add_events (Gdk::POINTER_MOTION_HINT_MASK);
 166         time_canvas->set_flags (CAN_FOCUS);
 167         time_canvas->set_center_scroll_region (false);
 168         time_canvas->set_dither         (Gdk::RGB_DITHER_NONE);
 169
 170         meter_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, 0.0);
 171         tempo_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height);
 172         range_marker_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height * 2.0);
 173         transport_marker_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height * 3.0);
 174         marker_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height * 4.0);
 175         cd_marker_group = new ArdourCanvas::Group (*time_canvas->root(), 0.0, timebar_height * 5.0);
 176
 177         tempo_bar = new ArdourCanvas::SimpleRect (*tempo_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 178         // tempo_bar->property_outline_pixels() = 0;
 179
 180         meter_bar = new ArdourCanvas::SimpleRect (*meter_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 181         // meter_bar->property_outline_pixels() = 0;
 182
 183         marker_bar = new ArdourCanvas::SimpleRect (*marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 184         // marker_bar->property_outline_pixels() = 0;
 185
 186         cd_marker_bar = new ArdourCanvas::SimpleRect (*cd_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 187         // cd_marker_bar->property_outline_pixels() = 0;
 188
 189         range_marker_bar = new ArdourCanvas::SimpleRect (*range_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 190         // range_marker_bar->property_outline_pixels() = 0;
 191
 192         transport_marker_bar = new ArdourCanvas::SimpleRect (*transport_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 193         // transport_marker_bar->property_outline_pixels() = 0;
 194
 195         cd_marker_bar_drag_rect = new ArdourCanvas::SimpleRect (*cd_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 196         // cd_marker_bar_drag_rect->property_outline_pixels() = 0;
 197         cd_marker_bar_drag_rect->hide ();
 198
 199         range_bar_drag_rect = new ArdourCanvas::SimpleRect (*range_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 200         range_bar_drag_rect->property_outline_pixels() = 0;
 201         range_bar_drag_rect->hide ();
 202
 203         transport_bar_drag_rect = new ArdourCanvas::SimpleRect (*transport_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height-1.0);
 204         transport_bar_drag_rect->property_outline_pixels() = 0;
 205         transport_bar_drag_rect->hide ();
 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, 0.0));
 209
 210         marker_drag_line = new ArdourCanvas::Line (*track_canvas->root());
 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         range_marker_drag_rect = new ArdourCanvas::SimpleRect (*track_canvas->root(), 0.0, 0.0, 0.0, 0.0);
 216         range_marker_drag_rect->hide ();
 217
 218         transport_loop_range_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, 0.0);
 219         transport_loop_range_rect->property_outline_pixels() = 1;
 220         transport_loop_range_rect->hide();
 221
 222         transport_punch_range_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, 0.0);
 223         transport_punch_range_rect->property_outline_pixels() = 0;
 224         transport_punch_range_rect->hide();
 225
 226         transport_loop_range_rect->lower_to_bottom (); // loop on the bottom
 227
 228         transport_punchin_line = new ArdourCanvas::SimpleLine (*time_line_group);
 229         transport_punchin_line->property_x1() = 0.0;
 230         transport_punchin_line->property_y1() = 0.0;
 231         transport_punchin_line->property_x2() = 0.0;
 232         transport_punchin_line->property_y2() = 0.0;
 233         transport_punchin_line->hide ();
 234
 235         transport_punchout_line  = new ArdourCanvas::SimpleLine (*time_line_group);
 236         transport_punchout_line->property_x1() = 0.0;
 237         transport_punchout_line->property_y1() = 0.0;
 238         transport_punchout_line->property_x2() = 0.0;
 239         transport_punchout_line->property_y2() = 0.0;
 240         transport_punchout_line->hide();
 241
 242         // used to show zoom mode active zooming
 243         zoom_rect = new ArdourCanvas::SimpleRect (*track_canvas->root(), 0.0, 0.0, 0.0, 0.0);
 244         zoom_rect->property_outline_pixels() = 1;
 245         zoom_rect->hide();
 246
 247         zoom_rect->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_zoom_rect_event), (ArdourCanvas::Item*) 0));
 248
 249         // used as rubberband rect
 250         rubberband_rect = new ArdourCanvas::SimpleRect (*track_canvas->root(), 0.0, 0.0, 0.0, 0.0);
 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         ZoomChanged.connect (bind (mem_fun(*this, &Editor::update_loop_range_view), false));
 262         ZoomChanged.connect (bind (mem_fun(*this, &Editor::update_punch_range_view), false));
 263
 264         double time_height = timebar_height * 5;
 265         double time_width = FLT_MAX/frames_per_unit;
 266         time_canvas->set_scroll_region(0.0, 0.0, time_width, time_height);
 267
 268         playhead_cursor = new Cursor (*this, &Editor::canvas_playhead_cursor_event);
 269
 270         initial_ruler_update_required = true;
 271         track_canvas->signal_size_allocate().connect (mem_fun(*this, &Editor::track_canvas_allocate));
 272
 273         if (logo_item) {
 274                 logo_item->lower_to_bottom ();
 275         }
 276
 277         ColorsChanged.connect (mem_fun (*this, &Editor::color_handler));
 278         color_handler();
 279
 280 }
 281
 282 void
 283 Editor::track_canvas_allocate (Gtk::Allocation alloc)
 284 {
 285         canvas_allocation = alloc;
 286
 287         if (!initial_ruler_update_required) {
 288                 if (!canvas_idle_queued) {
 289                         /* call this first so that we do stuff before any pending redraw */
 290                         Glib::signal_idle().connect (mem_fun (*this, &Editor::track_canvas_size_allocated), false);
 291                         canvas_idle_queued = true;
 292                 }
 293                 return;
 294         }
 295
 296         initial_ruler_update_required = false;
 297         track_canvas_size_allocated ();
 298 }
 299
 300 bool
 301 Editor::track_canvas_size_allocated ()
 302 {
 303         if (canvas_idle_queued) {
 304                 canvas_idle_queued = false;
 305         }
 306
 307         canvas_width = canvas_allocation.get_width();
 308         canvas_height = canvas_allocation.get_height();
 309
 310         full_canvas_height = canvas_height;
 311
 312         if (session) {
 313                 TrackViewList::iterator i;
 314                 double height = 0;
 315
 316                 for (i = track_views.begin(); i != track_views.end(); ++i) {
 317                         if ((*i)->control_parent) {
 318                                 height += (*i)->effective_height;
 319                         }
 320                 }
 321
 322                 full_canvas_height = height;
 323         }
 324
 325         zoom_range_clock.set ((nframes_t) floor ((canvas_width * frames_per_unit)));
 326         playhead_cursor->set_position (playhead_cursor->current_frame);
 327
 328         reset_hscrollbar_stepping ();
 329         reset_scrolling_region ();
 330
 331         if (playhead_cursor) playhead_cursor->set_length (canvas_height);
 332
 333         double y1 = vertical_adjustment.get_value ();
 334
 335         for (MarkerSelection::iterator x = selection->markers.begin(); x != selection->markers.end(); ++x) {
 336                 (*x)->set_line_vpos (y1, canvas_height);
 337         }
 338
 339         range_marker_drag_rect->property_y1() = y1;
 340         range_marker_drag_rect->property_y2() = full_canvas_height;
 341         transport_loop_range_rect->property_y1() = y1;
 342         transport_loop_range_rect->property_y2() = full_canvas_height;
 343         transport_punch_range_rect->property_y1() = y1;
 344         transport_punch_range_rect->property_y2() = full_canvas_height;
 345         transport_punchin_line->property_y1() = y1;
 346         transport_punchin_line->property_y2() = full_canvas_height;
 347         transport_punchout_line->property_y1() = y1;
 348         transport_punchout_line->property_y2() = full_canvas_height;
 349
 350         update_fixed_rulers();
 351         redisplay_tempo (true);
 352
 353         Resized (); /* EMIT_SIGNAL */
 354
 355         return false;
 356 }
 357
 358 void
 359 Editor::reset_scrolling_region (Gtk::Allocation* alloc)
 360 {
 361         TreeModel::Children rows = route_display_model->children();
 362         TreeModel::Children::iterator i;
 363         double pos;
 364
 365         for (pos = 0, i = rows.begin(); i != rows.end(); ++i) {
 366                 TimeAxisView *tv = (*i)[route_display_columns.tv];
 367                 if (tv != 0 && !tv->hidden()) {
 368                         pos += tv->effective_height;
 369                 }
 370         }
 371
 372         double last_canvas_unit =  max ((last_canvas_frame / frames_per_unit), canvas_width);
 373
 374         track_canvas->set_scroll_region (0.0, 0.0, last_canvas_unit, pos);
 375
 376         // XXX what is the correct height value for the time canvas ? this overstates it
 377         time_canvas->set_scroll_region ( 0.0, 0.0, last_canvas_unit, canvas_height);
 378
 379         range_marker_drag_rect->property_y2() = canvas_height;
 380         transport_loop_range_rect->property_y2() = canvas_height;
 381         transport_punch_range_rect->property_y2() = canvas_height;
 382         transport_punchin_line->property_y2() = canvas_height;
 383         transport_punchout_line->property_y2() = canvas_height;
 384
 385         update_punch_range_view (true);
 386
 387         controls_layout.queue_resize();
 388 }
 389
 390 void
 391 Editor::controls_layout_size_request (Requisition* req)
 392 {
 393         TreeModel::Children rows = route_display_model->children();
 394         TreeModel::Children::iterator i;
 395         double pos;
 396
 397         for (pos = 0, i = rows.begin(); i != rows.end(); ++i) {
 398                 TimeAxisView *tv = (*i)[route_display_columns.tv];
 399                 if (tv != 0) {
 400                         pos += tv->effective_height;
 401                 }
 402         }
 403
 404         RefPtr<Gdk::Screen> screen = get_screen();
 405
 406         if (!screen) {
 407                 screen = Gdk::Screen::get_default();
 408         }
 409
 410         edit_controls_vbox.check_resize();
 411         req->width = max (edit_controls_vbox.get_width(),  controls_layout.get_width());
 412
 413         /* don't get too big. the fudge factors here are just guesses */
 414
 415         req->width = min (req->width, screen->get_width() - 300);
 416         req->height = min ((gint) pos, (screen->get_height() - 400));
 417
 418         /* this one is important: it determines how big the layout thinks it really is, as
 419            opposed to what it displays on the screen
 420         */
 421
 422         controls_layout.set_size (edit_controls_vbox.get_width(), (gint) pos);
 423         controls_layout.set_size_request(edit_controls_vbox.get_width(), -1);
 424         zoom_box.set_size_request(edit_controls_vbox.get_width(), -1);
 425         time_button_frame.set_size_request(edit_controls_vbox.get_width() + edit_vscrollbar.get_width(), -1);
 426
 427         //cerr << "sizes = " << req->width << " " << edit_controls_vbox.get_width() << " " << controls_layout.get_width() << " " << zoom_box.get_width() << " " << time_button_frame.get_width() << endl;//DEBUG
 428 }
 429
 430 bool
 431 Editor::track_canvas_map_handler (GdkEventAny* ev)
 432 {
 433         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
 434         return false;
 435 }
 436
 437 bool
 438 Editor::time_canvas_map_handler (GdkEventAny* ev)
 439 {
 440         time_canvas->get_window()->set_cursor (*timebar_cursor);
 441         return false;
 442 }
 443
 444 void
 445 Editor::track_canvas_drag_data_received (const RefPtr<Gdk::DragContext>& context,
 446                                          int x, int y,
 447                                          const SelectionData& data,
 448                                          guint info, guint time)
 449 {
 450         cerr << "drop on canvas, target = " << data.get_target() << endl;
 451
 452         if (data.get_target() == "regions") {
 453                 drop_regions (context, x, y, data, info, time);
 454         } else {
 455                 drop_paths (context, x, y, data, info, time);
 456         }
 457 }
 458
 459 void
 460 Editor::drop_paths (const RefPtr<Gdk::DragContext>& context,
 461                     int x, int y,
 462                     const SelectionData& data,
 463                     guint info, guint time)
 464 {
 465         TimeAxisView* tvp;
 466         AudioTimeAxisView* tv;
 467         double cy;
 468         vector<ustring> paths;
 469         string spath;
 470         GdkEvent ev;
 471         nframes64_t frame;
 472
 473         if (convert_drop_to_paths (paths, context, x, y, data, info, time)) {
 474                 goto out;
 475         }
 476
 477         /* D-n-D coordinates are window-relative, so convert to "world" coordinates
 478          */
 479
 480         double wx;
 481         double wy;
 482
 483         track_canvas->window_to_world (x, y, wx, wy);
 484         wx += horizontal_adjustment.get_value();
 485         wy += vertical_adjustment.get_value();
 486
 487         ev.type = GDK_BUTTON_RELEASE;
 488         ev.button.x = wx;
 489         ev.button.y = wy;
 490
 491         frame = event_frame (&ev, 0, &cy);
 492
 493         snap_to (frame);
 494
 495         if ((tvp = trackview_by_y_position (cy)) == 0) {
 496
 497                 /* drop onto canvas background: create new tracks */
 498
 499                 frame = 0;
 500
 501                 do_embed (paths, Editing::ImportDistinctFiles, ImportAsTrack, frame);
 502
 503         } else if ((tv = dynamic_cast<AudioTimeAxisView*>(tvp)) != 0) {
 504
 505                 /* check that its an audio track, not a bus */
 506
 507                 if (tv->get_diskstream()) {
 508                         /* select the track, then embed */
 509                         selection->set (tv);
 510                         do_embed (paths, Editing::ImportDistinctFiles, ImportToTrack, frame);
 511                 }
 512         }
 513
 514   out:
 515         context->drag_finish (true, false, time);
 516 }
 517
 518 void
 519 Editor::drop_regions (const RefPtr<Gdk::DragContext>& context,
 520                       int x, int y,
 521                       const SelectionData& data,
 522                       guint info, guint time)
 523 {
 524         const SerializedObjectPointers<boost::shared_ptr<Region> >* sr =
 525                 reinterpret_cast<const SerializedObjectPointers<boost::shared_ptr<Region> > *> (data.get_data());
 526
 527         for (uint32_t i = 0; i < sr->cnt; ++i) {
 528
 529                 boost::shared_ptr<Region> r = sr->data[i];
 530                 boost::shared_ptr<AudioRegion> ar;
 531
 532                 if ((ar = boost::dynamic_pointer_cast<AudioRegion>(r)) != 0) {
 533                         insert_region_list_drag (ar, x, y);
 534                 }
 535         }
 536
 537         context->drag_finish (true, false, time);
 538 }
 539
 540 void
 541 Editor::maybe_autoscroll (GdkEvent* event)
 542 {
 543         nframes_t rightmost_frame = leftmost_frame + current_page_frames();
 544         nframes_t frame = drag_info.current_pointer_frame;
 545         bool startit = false;
 546
 547         static int last_autoscroll_direction = 0;
 548
 549         if (frame > rightmost_frame) {
 550
 551                 if (rightmost_frame < max_frames) {
 552                         autoscroll_direction = 1;
 553                         startit = true;
 554                 }
 555
 556         } else if (frame < leftmost_frame) {
 557
 558                 if (leftmost_frame > 0) {
 559                         autoscroll_direction = -1;
 560                         startit = true;
 561                 }
 562
 563         } else {
 564
 565                 if (drag_info.last_pointer_frame > drag_info.current_pointer_frame) {
 566                         autoscroll_direction = -1;
 567                 } else {
 568                         autoscroll_direction = 1;
 569                 }
 570         }
 571
 572
 573         if ((autoscroll_direction != last_autoscroll_direction) || (leftmost_frame < frame < rightmost_frame)) {
 574                 stop_canvas_autoscroll ();
 575         }
 576
 577         if (startit && autoscroll_timeout_tag < 0) {
 578                 start_canvas_autoscroll (autoscroll_direction);
 579         }
 580
 581         last_autoscroll_direction = autoscroll_direction;
 582 }
 583
 584 gint
 585 Editor::_autoscroll_canvas (void *arg)
 586 {
 587         return ((Editor *) arg)->autoscroll_canvas ();
 588 }
 589
 590 bool
 591 Editor::autoscroll_canvas ()
 592 {
 593         nframes_t new_frame;
 594         nframes_t limit = max_frames - current_page_frames();
 595         GdkEventMotion ev;
 596         nframes_t target_frame;
 597
 598         if (autoscroll_direction < 0) {
 599                 if (leftmost_frame < autoscroll_distance) {
 600                         new_frame = 0;
 601                 } else {
 602                         new_frame = leftmost_frame - autoscroll_distance;
 603                 }
 604                 target_frame = drag_info.current_pointer_frame - autoscroll_distance;
 605         } else {
 606                 if (leftmost_frame > limit - autoscroll_distance) {
 607                         new_frame = limit;
 608                 } else {
 609                         new_frame = leftmost_frame + autoscroll_distance;
 610                 }
 611                 target_frame = drag_info.current_pointer_frame + autoscroll_distance;
 612         }
 613
 614         /* now fake a motion event to get the object that is being dragged to move too */
 615
 616         ev.type = GDK_MOTION_NOTIFY;
 617         ev.state &= Gdk::BUTTON1_MASK;
 618         ev.x = frame_to_unit (target_frame);
 619         ev.y = drag_info.current_pointer_y;
 620         motion_handler (drag_info.item, (GdkEvent*) &ev, drag_info.item_type, true);
 621
 622         if (new_frame == 0 || new_frame == limit) {
 623                 /* we are done */
 624                 return false;
 625         }
 626
 627         autoscroll_cnt++;
 628
 629         if (autoscroll_cnt == 1) {
 630
 631                 /* connect the timeout so that we get called repeatedly */
 632
 633                 autoscroll_timeout_tag = g_idle_add ( _autoscroll_canvas, this);
 634                 return false;
 635
 636         }
 637
 638         if (new_frame != leftmost_frame) {
 639                 reset_x_origin (new_frame);
 640         }
 641
 642         if (autoscroll_cnt == 50) { /* 0.5 seconds */
 643
 644                 /* after about a while, speed up a bit by changing the timeout interval */
 645
 646                 autoscroll_distance = (nframes_t) floor (current_page_frames()/30.0f);
 647
 648         } else if (autoscroll_cnt == 150) { /* 1.0 seconds */
 649
 650                 autoscroll_distance = (nframes_t) floor (current_page_frames()/20.0f);
 651
 652         } else if (autoscroll_cnt == 300) { /* 1.5 seconds */
 653
 654                 /* after about another while, speed up by increasing the shift per callback */
 655
 656                 autoscroll_distance =  (nframes_t) floor (current_page_frames()/10.0f);
 657
 658         }
 659
 660         return true;
 661 }
 662
 663 void
 664 Editor::start_canvas_autoscroll (int dir)
 665 {
 666         if (!session || autoscroll_active) {
 667                 return;
 668         }
 669
 670         stop_canvas_autoscroll ();
 671
 672         autoscroll_active = true;
 673         autoscroll_direction = dir;
 674         autoscroll_distance = (nframes_t) floor (current_page_frames()/50.0);
 675         autoscroll_cnt = 0;
 676
 677         /* do it right now, which will start the repeated callbacks */
 678
 679         autoscroll_canvas ();
 680 }
 681
 682 void
 683 Editor::stop_canvas_autoscroll ()
 684 {
 685         if (autoscroll_timeout_tag >= 0) {
 686                 g_source_remove (autoscroll_timeout_tag);
 687                 autoscroll_timeout_tag = -1;
 688         }
 689
 690         autoscroll_active = false;
 691 }
 692
 693 gint
 694 Editor::left_track_canvas (GdkEventCrossing *ev)
 695 {
 696         set_entered_track (0);
 697         set_entered_regionview (0);
 698         return FALSE;
 699 }
 700
 701 void
 702 Editor::tie_vertical_scrolling ()
 703 {
 704         double y1 = vertical_adjustment.get_value();
 705
 706         playhead_cursor->set_y_axis (y1);
 707
 708         range_marker_drag_rect->property_y1() = y1;
 709         range_marker_drag_rect->property_y2() = full_canvas_height;
 710         transport_loop_range_rect->property_y1() = y1;
 711         transport_loop_range_rect->property_y2() = full_canvas_height;
 712         transport_punch_range_rect->property_y1() = y1;
 713         transport_punch_range_rect->property_y2() = full_canvas_height;
 714         transport_punchin_line->property_y1() = y1;
 715         transport_punchin_line->property_y2() = full_canvas_height;
 716         transport_punchout_line->property_y1() = y1;
 717         transport_punchout_line->property_y2() = full_canvas_height;
 718
 719         if (!selection->markers.empty()) {
 720                 for (MarkerSelection::iterator x = selection->markers.begin(); x != selection->markers.end(); ++x) {
 721                         (*x)->set_line_vpos (y1, canvas_height);
 722                 }
 723         }
 724
 725         if (logo_item) {
 726                 logo_item->property_y() = y1;
 727         }
 728
 729         /* this will do an immediate redraw */
 730
 731         controls_layout.get_vadjustment()->set_value (y1);
 732 }
 733
 734 void
 735 Editor::canvas_horizontally_scrolled ()
 736 {
 737         nframes64_t time_origin = (nframes_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
 738
 739         if (time_origin != leftmost_frame) {
 740                 canvas_scroll_to (time_origin);
 741         }
 742 }
 743
 744 void
 745 Editor::canvas_scroll_to (nframes64_t time_origin)
 746 {
 747         leftmost_frame = time_origin;
 748         nframes_t rightmost_frame = leftmost_frame + current_page_frames ();
 749
 750         if (rightmost_frame > last_canvas_frame) {
 751                 last_canvas_frame = rightmost_frame;
 752                 reset_scrolling_region ();
 753         }
 754
 755         if (logo_item) {
 756                 logo_item->property_x() = horizontal_adjustment.get_value ();
 757         }
 758
 759         update_fixed_rulers ();
 760
 761         redisplay_tempo (!_dragging_hscrollbar);
 762 }
 763
 764 void
 765 Editor::color_handler()
 766 {
 767         playhead_cursor->canvas_item.property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_PlayHead.get();
 768         verbose_canvas_cursor->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_VerboseCanvasCursor.get();
 769
 770         meter_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MeterBar.get();
 771         meter_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 772
 773         tempo_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TempoBar.get();
 774         tempo_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 775
 776         marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBar.get();
 777         marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 778
 779         cd_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CDMarkerBar.get();
 780         cd_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 781
 782         range_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeMarkerBar.get();
 783         range_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 784
 785         transport_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportMarkerBar.get();
 786         transport_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 787
 788         cd_marker_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 789         cd_marker_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 790
 791         range_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 792         range_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 793
 794         transport_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 795         transport_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 796
 797         marker_drag_line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerDragLine.get();
 798
 799         range_marker_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 800         range_marker_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 801
 802         transport_loop_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 803         transport_loop_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 804
 805         transport_punch_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 806         transport_punch_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 807
 808         transport_punchin_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 809         transport_punchout_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 810
 811         zoom_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 812         zoom_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 813
 814         rubberband_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 815         rubberband_rect->property_fill_color_rgba() = (guint32) ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 816
 817         location_marker_color = ARDOUR_UI::config()->canvasvar_LocationMarker.get();
 818         location_range_color = ARDOUR_UI::config()->canvasvar_LocationRange.get();
 819         location_cd_marker_color = ARDOUR_UI::config()->canvasvar_LocationCDMarker.get();
 820         location_loop_color = ARDOUR_UI::config()->canvasvar_LocationLoop.get();
 821         location_punch_color = ARDOUR_UI::config()->canvasvar_LocationPunch.get();
 822
 823         refresh_location_display ();
 824         redisplay_tempo (true);
 825
 826         if (session)
 827                 session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks); // redraw metric markers
 828 }
 829
 830 void
 831 Editor::flush_canvas ()
 832 {
 833         if (is_mapped()) {
 834                 track_canvas->update_now ();
 835                 // gdk_window_process_updates (GTK_LAYOUT(track_canvas->gobj())->bin_window, true);
 836         }
 837 }
 838