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 nframes64_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         } else {
  93                 track_canvas = new ArdourCanvas::CanvasAA ();
  94         }
  95
  96         ArdourCanvas::init ();
  97         ardour_canvas_type_init ();
  98
  99         /* don't try to center the canvas */
 100
 101         track_canvas->set_center_scroll_region (false);
 102         track_canvas->set_dither (Gdk::RGB_DITHER_NONE);
 103
 104         Glib::RefPtr<Gdk::Screen> screen = get_screen();
 105
 106         if (!screen) {
 107                 screen = Gdk::Screen::get_default();
 108         }
 109         physical_screen_width = screen->get_width ();
 110         physical_screen_height = screen->get_height ();
 111
 112         /* stuff for the verbose canvas cursor */
 113
 114         Pango::FontDescription* font = get_font_for_style (N_("VerboseCanvasCursor"));
 115
 116         verbose_canvas_cursor = new ArdourCanvas::Text (*track_canvas->root());
 117         verbose_canvas_cursor->property_font_desc() = *font;
 118         verbose_canvas_cursor->property_anchor() = ANCHOR_NW;
 119
 120         delete font;
 121
 122         verbose_cursor_visible = false;
 123
 124         /* on the bottom, an image */
 125
 126         if (Profile->get_sae()) {
 127                 Image img (::get_icon (X_("saelogo")));
 128                 logo_item = new ArdourCanvas::Pixbuf (*track_canvas->root(), 0.0, 0.0, img.get_pixbuf());
 129                 // logo_item->property_height_in_pixels() = true;
 130                 // logo_item->property_width_in_pixels() = true;
 131                 // logo_item->property_height_set() = true;
 132                 // logo_item->property_width_set() = true;
 133                 logo_item->show ();
 134         }
 135
 136         _master_group = new ArdourCanvas::Group (*track_canvas->root());
 137
 138         transport_loop_range_rect = new ArdourCanvas::SimpleRect (*_master_group, 0.0, 0.0, 0.0, physical_screen_height);
 139         transport_loop_range_rect->property_outline_pixels() = 1;
 140         transport_loop_range_rect->hide();
 141
 142         transport_punch_range_rect = new ArdourCanvas::SimpleRect (*_master_group, 0.0, 0.0, 0.0, physical_screen_height);
 143         transport_punch_range_rect->property_outline_pixels() = 0;
 144         transport_punch_range_rect->hide();
 145
 146         /* a group to hold time (measure) lines */
 147         time_line_group = new ArdourCanvas::Group (*_master_group, 0.0, 0.0);
 148
 149         range_marker_drag_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, physical_screen_height);
 150         range_marker_drag_rect->hide ();
 151
 152         _trackview_group = new ArdourCanvas::Group (*_master_group);
 153         _region_motion_group = new ArdourCanvas::Group (*_trackview_group);
 154
 155         meter_bar_group = new ArdourCanvas::Group (*track_canvas->root ());
 156         meter_bar = new ArdourCanvas::SimpleRect (*meter_bar_group, 0.0, 0.0, physical_screen_width, timebar_height);
 157         meter_bar->property_outline_what() = (0x1 | 0x8);
 158         meter_bar->property_outline_pixels() = 0;
 159
 160         tempo_bar_group = new ArdourCanvas::Group (*track_canvas->root ());
 161         tempo_bar = new ArdourCanvas::SimpleRect (*tempo_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height));
 162         tempo_bar->property_outline_what() = (0x1 | 0x8);
 163         tempo_bar->property_outline_pixels() = 0;
 164
 165         range_marker_bar_group = new ArdourCanvas::Group (*track_canvas->root ());
 166         range_marker_bar = new ArdourCanvas::SimpleRect (*range_marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height));
 167         range_marker_bar->property_outline_what() = (0x1 | 0x8);
 168         range_marker_bar->property_outline_pixels() = 0;
 169
 170         transport_marker_bar_group = new ArdourCanvas::Group (*track_canvas->root ());
 171         transport_marker_bar = new ArdourCanvas::SimpleRect (*transport_marker_bar_group, 0.0, 0.0,  physical_screen_width, (timebar_height));
 172         transport_marker_bar->property_outline_what() = (0x1 | 0x8);
 173         transport_marker_bar->property_outline_pixels() = 0;
 174
 175         marker_bar_group = new ArdourCanvas::Group (*track_canvas->root ());
 176         marker_bar = new ArdourCanvas::SimpleRect (*marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height));
 177         marker_bar->property_outline_what() = (0x1 | 0x8);
 178         marker_bar->property_outline_pixels() = 0;
 179
 180         cd_marker_bar_group = new ArdourCanvas::Group (*track_canvas->root ());
 181         cd_marker_bar = new ArdourCanvas::SimpleRect (*cd_marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height));
 182         cd_marker_bar->property_outline_what() = (0x1 | 0x8);
 183         cd_marker_bar->property_outline_pixels() = 0;
 184
 185         timebar_group =  new ArdourCanvas::Group (*track_canvas->root(), 0.0, 0.0);
 186         cursor_group = new ArdourCanvas::Group (*track_canvas->root(), 0.0, 0.0);
 187
 188         meter_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height * 5.0);
 189         tempo_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height * 4.0);
 190         range_marker_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height * 3.0);
 191         transport_marker_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height * 2.0);
 192         marker_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height);
 193         cd_marker_group = new ArdourCanvas::Group (*timebar_group, 0.0, 0.0);
 194
 195         marker_drag_line_points.push_back(Gnome::Art::Point(0.0, 0.0));
 196         marker_drag_line_points.push_back(Gnome::Art::Point(0.0, physical_screen_height));
 197
 198         marker_drag_line = new ArdourCanvas::Line (*timebar_group);
 199         marker_drag_line->property_width_pixels() = 1;
 200         marker_drag_line->property_points() = marker_drag_line_points;
 201         marker_drag_line->hide();
 202
 203         cd_marker_bar_drag_rect = new ArdourCanvas::SimpleRect (*cd_marker_group, 0.0, 0.0, 100, timebar_height);
 204         cd_marker_bar_drag_rect->property_outline_pixels() = 0;
 205         cd_marker_bar_drag_rect->hide ();
 206
 207         range_bar_drag_rect = new ArdourCanvas::SimpleRect (*range_marker_group, 0.0, 0.0, 100, timebar_height);
 208         range_bar_drag_rect->property_outline_pixels() = 0;
 209         range_bar_drag_rect->hide ();
 210
 211         transport_bar_drag_rect = new ArdourCanvas::SimpleRect (*transport_marker_group, 0.0, 0.0, 100, timebar_height);
 212         transport_bar_drag_rect->property_outline_pixels() = 0;
 213         transport_bar_drag_rect->hide ();
 214
 215         transport_punchin_line = new ArdourCanvas::SimpleLine (*_master_group);
 216         transport_punchin_line->property_x1() = 0.0;
 217         transport_punchin_line->property_y1() = 0.0;
 218         transport_punchin_line->property_x2() = 0.0;
 219         transport_punchin_line->property_y2() = physical_screen_height;
 220         transport_punchin_line->hide ();
 221
 222         transport_punchout_line  = new ArdourCanvas::SimpleLine (*_master_group);
 223         transport_punchout_line->property_x1() = 0.0;
 224         transport_punchout_line->property_y1() = 0.0;
 225         transport_punchout_line->property_x2() = 0.0;
 226         transport_punchout_line->property_y2() = physical_screen_height;
 227         transport_punchout_line->hide();
 228
 229         // used to show zoom mode active zooming
 230         zoom_rect = new ArdourCanvas::SimpleRect (*_master_group, 0.0, 0.0, 0.0, 0.0);
 231         zoom_rect->property_outline_pixels() = 1;
 232         zoom_rect->hide();
 233
 234         zoom_rect->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_zoom_rect_event), (ArdourCanvas::Item*) 0));
 235
 236         // used as rubberband rect
 237         rubberband_rect = new ArdourCanvas::SimpleRect (*_trackview_group, 0.0, 0.0, 0.0, 0.0);
 238
 239         rubberband_rect->property_outline_pixels() = 1;
 240         rubberband_rect->hide();
 241
 242         tempo_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_tempo_bar_event), tempo_bar));
 243         meter_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_meter_bar_event), meter_bar));
 244         marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_marker_bar_event), marker_bar));
 245         cd_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_cd_marker_bar_event), cd_marker_bar));
 246         range_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_range_marker_bar_event), range_marker_bar));
 247         transport_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_transport_marker_bar_event), transport_marker_bar));
 248
 249         playhead_cursor = new Cursor (*this, &Editor::canvas_playhead_cursor_event);
 250
 251         if (logo_item) {
 252                 logo_item->lower_to_bottom ();
 253         }
 254         /* need to handle 4 specific types of events as catch-alls */
 255
 256         track_canvas->signal_scroll_event().connect (mem_fun (*this, &Editor::track_canvas_scroll_event));
 257         track_canvas->signal_motion_notify_event().connect (mem_fun (*this, &Editor::track_canvas_motion_notify_event));
 258         track_canvas->signal_button_press_event().connect (mem_fun (*this, &Editor::track_canvas_button_press_event));
 259         track_canvas->signal_button_release_event().connect (mem_fun (*this, &Editor::track_canvas_button_release_event));
 260
 261         track_canvas->set_name ("EditorMainCanvas");
 262         track_canvas->add_events (Gdk::POINTER_MOTION_HINT_MASK|Gdk::SCROLL_MASK);
 263         track_canvas->signal_leave_notify_event().connect (mem_fun(*this, &Editor::left_track_canvas));
 264         track_canvas->signal_enter_notify_event().connect (mem_fun(*this, &Editor::entered_track_canvas));
 265         track_canvas->set_flags (CAN_FOCUS);
 266
 267         /* set up drag-n-drop */
 268
 269         vector<TargetEntry> target_table;
 270
 271         // Drag-N-Drop from the region list can generate this target
 272         target_table.push_back (TargetEntry ("regions"));
 273
 274         target_table.push_back (TargetEntry ("text/plain"));
 275         target_table.push_back (TargetEntry ("text/uri-list"));
 276         target_table.push_back (TargetEntry ("application/x-rootwin-drop"));
 277
 278         track_canvas->drag_dest_set (target_table);
 279         track_canvas->signal_drag_data_received().connect (mem_fun(*this, &Editor::track_canvas_drag_data_received));
 280
 281         track_canvas->signal_size_allocate().connect (mem_fun(*this, &Editor::track_canvas_allocate));
 282
 283         ColorsChanged.connect (mem_fun (*this, &Editor::color_handler));
 284         color_handler();
 285
 286 }
 287
 288 void
 289 Editor::track_canvas_allocate (Gtk::Allocation alloc)
 290 {
 291         canvas_allocation = alloc;
 292         track_canvas_size_allocated ();
 293 }
 294
 295 bool
 296 Editor::track_canvas_size_allocated ()
 297 {
 298         bool height_changed = canvas_height != canvas_allocation.get_height();
 299
 300         canvas_width = canvas_allocation.get_width();
 301         canvas_height = canvas_allocation.get_height();
 302
 303         if (session) {
 304                 TrackViewList::iterator i;
 305                 double height = 0;
 306
 307                 for (i = track_views.begin(); i != track_views.end(); ++i) {
 308                         if ((*i)->control_parent) {
 309                                 height += (*i)->effective_height;
 310                         }
 311                         (*i)->clip_to_viewport ();
 312                 }
 313
 314                 full_canvas_height = height + canvas_timebars_vsize;
 315         }
 316
 317         if (height_changed) {
 318                 if (playhead_cursor) {
 319                         playhead_cursor->set_length (canvas_height);
 320                 }
 321
 322                 for (MarkerSelection::iterator x = selection->markers.begin(); x != selection->markers.end(); ++x) {
 323                         (*x)->set_line_vpos (0, canvas_height);
 324                 }
 325
 326                 vertical_adjustment.set_page_size (canvas_height);
 327                 last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
 328                 if ((vertical_adjustment.get_value() + canvas_height) >= vertical_adjustment.get_upper()) {
 329                         /*
 330                            We're increasing the size of the canvas while the bottom is visible.
 331                            We scroll down to keep in step with the controls layout.
 332                         */
 333                         vertical_adjustment.set_value (full_canvas_height - canvas_height);
 334                 }
 335         }
 336
 337         handle_new_duration ();
 338         reset_hscrollbar_stepping ();
 339         update_fixed_rulers();
 340         redisplay_tempo (false);
 341
 342         Resized (); /* EMIT_SIGNAL */
 343
 344         return false;
 345 }
 346
 347 void
 348 Editor::controls_layout_size_request (Requisition* req)
 349 {
 350         TreeModel::Children rows = route_display_model->children();
 351         TreeModel::Children::iterator i;
 352         double pos;
 353         bool changed = false;
 354
 355         for (pos = 0, i = rows.begin(); i != rows.end(); ++i) {
 356                 TimeAxisView *tv = (*i)[route_display_columns.tv];
 357                 if (tv != 0) {
 358                         pos += tv->effective_height;
 359                         tv->clip_to_viewport ();
 360                 }
 361         }
 362
 363         gint height = min ((gint) pos, (gint) (physical_screen_height - 600));
 364         gint width = max (edit_controls_vbox.get_width(),  controls_layout.get_width());
 365
 366         /* don't get too big. the fudge factors here are just guesses */
 367
 368         width =  min (width, (gint) (physical_screen_width - 300));
 369
 370         if ((req->width != width) || (req->height != height)) {
 371                 changed = true;
 372                 controls_layout_size_request_connection.disconnect ();
 373         }
 374
 375         if (req->width != width) {
 376                 gint vbox_width = edit_controls_vbox.get_width();
 377                 req->width = width;
 378
 379                 /* this one is important: it determines how big the layout thinks it really is, as
 380                    opposed to what it displays on the screen
 381                 */
 382                 controls_layout.property_width () = vbox_width;
 383                 controls_layout.property_width_request () = vbox_width;
 384
 385                 time_button_event_box.property_width_request () = vbox_width;
 386                 zoom_box.property_width_request () = vbox_width;
 387         }
 388
 389         if (req->height != height) {
 390                 req->height = height;
 391                 controls_layout.property_height () = (guint) floor (pos);
 392                 controls_layout.property_height_request () = height;
 393         }
 394
 395         if (changed) {
 396                 controls_layout_size_request_connection = controls_layout.signal_size_request().connect (mem_fun (*this, &Editor::controls_layout_size_request));
 397         }
 398         //cerr << "sizes = " << req->width << " " << edit_controls_vbox.get_width() << " " << controls_layout.get_width() << " " << zoom_box.get_width() << " " << time_button_frame.get_width() << endl;//DEBUG
 399 }
 400
 401 bool
 402 Editor::track_canvas_map_handler (GdkEventAny* ev)
 403 {
 404         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
 405         return false;
 406 }
 407
 408 void
 409 Editor::track_canvas_drag_data_received (const RefPtr<Gdk::DragContext>& context,
 410                                          int x, int y,
 411                                          const SelectionData& data,
 412                                          guint info, guint time)
 413 {
 414         cerr << "drop on canvas, target = " << data.get_target() << endl;
 415
 416         if (data.get_target() == "regions") {
 417                 drop_regions (context, x, y, data, info, time);
 418         } else {
 419                 drop_paths (context, x, y, data, info, time);
 420         }
 421 }
 422
 423 void
 424 Editor::drop_paths (const RefPtr<Gdk::DragContext>& context,
 425                     int x, int y,
 426                     const SelectionData& data,
 427                     guint info, guint time)
 428 {
 429         TimeAxisView* tvp;
 430         AudioTimeAxisView* tv;
 431         double cy;
 432         vector<ustring> paths;
 433         string spath;
 434         GdkEvent ev;
 435         nframes64_t frame;
 436
 437         if (convert_drop_to_paths (paths, context, x, y, data, info, time)) {
 438                 goto out;
 439         }
 440
 441         /* D-n-D coordinates are window-relative, so convert to "world" coordinates
 442          */
 443
 444         double wx;
 445         double wy;
 446
 447         track_canvas->window_to_world (x, y, wx, wy);
 448         //wx += horizontal_adjustment.get_value();
 449         //wy += vertical_adjustment.get_value();
 450
 451         ev.type = GDK_BUTTON_RELEASE;
 452         ev.button.x = wx;
 453         ev.button.y = wy;
 454
 455         frame = event_frame (&ev, 0, &cy);
 456
 457         snap_to (frame);
 458
 459         if ((tvp = trackview_by_y_position (cy)) == 0) {
 460
 461                 /* drop onto canvas background: create new tracks */
 462
 463                 frame = 0;
 464
 465                 if (Profile->get_sae() || Config->get_only_copy_imported_files()) {
 466                         do_import (paths, Editing::ImportDistinctFiles, Editing::ImportAsTrack, SrcBest, frame);
 467                 } else {
 468                         do_embed (paths, Editing::ImportDistinctFiles, ImportAsTrack, frame);
 469                 }
 470
 471         } else if ((tv = dynamic_cast<AudioTimeAxisView*>(tvp)) != 0) {
 472
 473                 /* check that its an audio track, not a bus */
 474
 475                 if (tv->get_diskstream()) {
 476                         /* select the track, then embed */
 477                         selection->set (tv);
 478
 479                         if (Profile->get_sae() || Config->get_only_copy_imported_files()) {
 480                                 do_import (paths, Editing::ImportDistinctFiles, Editing::ImportToTrack, SrcBest, frame);
 481                         } else {
 482                                 do_embed (paths, Editing::ImportDistinctFiles, ImportToTrack, frame);
 483                         }
 484                 }
 485         }
 486
 487   out:
 488         context->drag_finish (true, false, time);
 489 }
 490
 491 void
 492 Editor::drop_regions (const RefPtr<Gdk::DragContext>& context,
 493                       int x, int y,
 494                       const SelectionData& data,
 495                       guint info, guint time)
 496 {
 497         const SerializedObjectPointers<boost::shared_ptr<Region> >* sr =
 498                 reinterpret_cast<const SerializedObjectPointers<boost::shared_ptr<Region> > *> (data.get_data());
 499
 500         for (uint32_t i = 0; i < sr->cnt; ++i) {
 501
 502                 boost::shared_ptr<Region> r = sr->data[i];
 503                 boost::shared_ptr<AudioRegion> ar;
 504
 505                 if ((ar = boost::dynamic_pointer_cast<AudioRegion>(r)) != 0) {
 506                         insert_region_list_drag (ar, x, y);
 507                 }
 508         }
 509
 510         context->drag_finish (true, false, time);
 511 }
 512
 513 void
 514 Editor::maybe_autoscroll (GdkEventMotion* event)
 515 {
 516
 517         nframes64_t rightmost_frame = leftmost_frame + current_page_frames();
 518         nframes64_t frame = drag_info.current_pointer_frame;
 519         bool startit = false;
 520
 521         autoscroll_y = 0;
 522         autoscroll_x = 0;
 523         if (event->y < canvas_timebars_vsize) {
 524                 autoscroll_y = -1;
 525                 startit = true;
 526         } else if (event->y > canvas_height) {
 527                 autoscroll_y = 1;
 528                 startit = true;
 529         }
 530
 531         if (frame > rightmost_frame) {
 532
 533                 if (rightmost_frame < max_frames) {
 534                         autoscroll_x = 1;
 535                         startit = true;
 536                 }
 537
 538         } else if (frame < leftmost_frame) {
 539                 if (leftmost_frame > 0) {
 540                         autoscroll_x = -1;
 541                         startit = true;
 542                 }
 543
 544         }
 545
 546         if (!allow_vertical_scroll) {
 547                 autoscroll_y = 0;
 548         }
 549
 550         if ((autoscroll_x != last_autoscroll_x) || (autoscroll_y != last_autoscroll_y) || (autoscroll_x == 0 && autoscroll_y == 0)) {
 551                 stop_canvas_autoscroll ();
 552         }
 553
 554         if (startit && autoscroll_timeout_tag < 0) {
 555                 start_canvas_autoscroll (autoscroll_x, autoscroll_y);
 556         }
 557
 558         last_autoscroll_x = autoscroll_x;
 559         last_autoscroll_y = autoscroll_y;
 560 }
 561
 562 void
 563 Editor::maybe_autoscroll_horizontally (GdkEventMotion* event)
 564 {
 565         nframes64_t rightmost_frame = leftmost_frame + current_page_frames();
 566         nframes64_t frame = drag_info.current_pointer_frame;
 567         bool startit = false;
 568
 569         autoscroll_y = 0;
 570         autoscroll_x = 0;
 571
 572         if (frame > rightmost_frame) {
 573
 574                 if (rightmost_frame < max_frames) {
 575                         autoscroll_x = 1;
 576                         startit = true;
 577                 }
 578
 579         } else if (frame < leftmost_frame) {
 580                 if (leftmost_frame > 0) {
 581                         autoscroll_x = -1;
 582                         startit = true;
 583                 }
 584
 585         }
 586
 587         if ((autoscroll_x != last_autoscroll_x) || (autoscroll_y != last_autoscroll_y) || (autoscroll_x == 0 && autoscroll_y == 0)) {
 588                 stop_canvas_autoscroll ();
 589         }
 590
 591         if (startit && autoscroll_timeout_tag < 0) {
 592                 start_canvas_autoscroll (autoscroll_x, autoscroll_y);
 593         }
 594
 595         last_autoscroll_x = autoscroll_x;
 596         last_autoscroll_y = autoscroll_y;
 597 }
 598
 599 gint
 600 Editor::_autoscroll_canvas (void *arg)
 601 {
 602         return ((Editor *) arg)->autoscroll_canvas ();
 603 }
 604
 605 bool
 606 Editor::autoscroll_canvas ()
 607 {
 608         nframes64_t new_frame;
 609         nframes64_t limit = max_frames - current_page_frames();
 610         GdkEventMotion ev;
 611         double new_pixel;
 612         double target_pixel;
 613
 614         if (autoscroll_x_distance != 0) {
 615                 if (autoscroll_x > 0) {
 616                         autoscroll_x_distance = (unit_to_frame (drag_info.current_pointer_x) - (leftmost_frame + current_page_frames())) / 3;
 617                 } else if (autoscroll_x < 0) {
 618                         autoscroll_x_distance = (leftmost_frame - unit_to_frame (drag_info.current_pointer_x)) / 3;
 619
 620                 }
 621         }
 622
 623         if (autoscroll_y_distance != 0) {
 624                 if (autoscroll_y > 0) {
 625                         autoscroll_y_distance = (drag_info.current_pointer_y - (get_trackview_group_vertical_offset() + canvas_height)) / 3;
 626                 } else if (autoscroll_y < 0) {
 627
 628                         autoscroll_y_distance = (vertical_adjustment.get_value () - drag_info.current_pointer_y) / 3;
 629                 }
 630         }
 631
 632         if (autoscroll_x < 0) {
 633                 if (leftmost_frame < autoscroll_x_distance) {
 634                         new_frame = 0;
 635                 } else {
 636                         new_frame = leftmost_frame - autoscroll_x_distance;
 637                 }
 638         } else if (autoscroll_x > 0) {
 639                 if (leftmost_frame > limit - autoscroll_x_distance) {
 640                         new_frame = limit;
 641                 } else {
 642                         new_frame = leftmost_frame + autoscroll_x_distance;
 643                 }
 644         } else {
 645                 new_frame = leftmost_frame;
 646         }
 647
 648         double vertical_pos = vertical_adjustment.get_value();
 649
 650         if (autoscroll_y < 0) {
 651
 652                 if (vertical_pos < autoscroll_y_distance) {
 653                         new_pixel = 0;
 654                 } else {
 655                         new_pixel = vertical_pos - autoscroll_y_distance;
 656                 }
 657
 658                 target_pixel = drag_info.current_pointer_y - autoscroll_y_distance;
 659                 target_pixel = max (target_pixel, 0.0);
 660
 661         } else if (autoscroll_y > 0) {
 662
 663                 double top_of_bottom_of_canvas = full_canvas_height - canvas_height;
 664
 665                 if (vertical_pos > full_canvas_height - autoscroll_y_distance) {
 666                         new_pixel = full_canvas_height;
 667                 } else {
 668                         new_pixel = vertical_pos + autoscroll_y_distance;
 669                 }
 670
 671                 new_pixel = min (top_of_bottom_of_canvas, new_pixel);
 672
 673                 target_pixel = drag_info.current_pointer_y + autoscroll_y_distance;
 674
 675                 /* don't move to the full canvas height because the item will be invisible
 676                    (its top edge will line up with the bottom of the visible canvas.
 677                 */
 678
 679                 target_pixel = min (target_pixel, full_canvas_height - 10);
 680
 681         } else {
 682                 target_pixel = drag_info.current_pointer_y;
 683                 new_pixel = vertical_pos;
 684         }
 685
 686         if ((new_frame == 0 || new_frame == limit) && (new_pixel == 0 || new_pixel == DBL_MAX)) {
 687                 /* we are done */
 688                 return false;
 689         }
 690
 691         if (new_frame != leftmost_frame) {
 692                 reset_x_origin (new_frame);
 693         }
 694
 695         vertical_adjustment.set_value (new_pixel);
 696
 697         /* fake an event. */
 698
 699         Glib::RefPtr<Gdk::Window> canvas_window = const_cast<Editor*>(this)->track_canvas->get_window();
 700         gint x, y;
 701         Gdk::ModifierType mask;
 702         canvas_window->get_pointer (x, y, mask);
 703         ev.type = GDK_MOTION_NOTIFY;
 704         ev.state &= Gdk::BUTTON1_MASK;
 705         ev.x = x;
 706         ev.y = y;
 707
 708         motion_handler (drag_info.item, (GdkEvent*) &ev, drag_info.item_type, true);
 709
 710         autoscroll_cnt++;
 711
 712         if (autoscroll_cnt == 1) {
 713
 714                 /* connect the timeout so that we get called repeatedly */
 715
 716                 autoscroll_timeout_tag = g_idle_add ( _autoscroll_canvas, this);
 717                 return false;
 718
 719         }
 720
 721         return true;
 722 }
 723
 724 void
 725 Editor::start_canvas_autoscroll (int dx, int dy)
 726 {
 727         if (!session || autoscroll_active) {
 728                 return;
 729         }
 730
 731         stop_canvas_autoscroll ();
 732
 733         autoscroll_active = true;
 734         autoscroll_x = dx;
 735         autoscroll_y = dy;
 736         autoscroll_x_distance = (nframes64_t) floor (current_page_frames()/50.0);
 737         autoscroll_y_distance = fabs (dy * 5); /* pixels */
 738         autoscroll_cnt = 0;
 739
 740         /* do it right now, which will start the repeated callbacks */
 741
 742         autoscroll_canvas ();
 743 }
 744
 745 void
 746 Editor::stop_canvas_autoscroll ()
 747 {
 748
 749         if (autoscroll_timeout_tag >= 0) {
 750                 g_source_remove (autoscroll_timeout_tag);
 751                 autoscroll_timeout_tag = -1;
 752         }
 753
 754         autoscroll_active = false;
 755 }
 756
 757 bool
 758 Editor::left_track_canvas (GdkEventCrossing *ev)
 759 {
 760         set_entered_track (0);
 761         set_entered_regionview (0);
 762         reset_canvas_action_sensitivity (false);
 763         return false;
 764 }
 765
 766 bool
 767 Editor::entered_track_canvas (GdkEventCrossing *ev)
 768 {
 769         reset_canvas_action_sensitivity (true);
 770         return FALSE;
 771 }
 772
 773 void
 774 Editor::tie_vertical_scrolling ()
 775 {
 776         scroll_canvas_vertically ();
 777
 778         /* this will do an immediate redraw */
 779
 780         controls_layout.get_vadjustment()->set_value (vertical_adjustment.get_value());
 781 }
 782
 783 void
 784 Editor::scroll_canvas_horizontally ()
 785 {
 786         nframes64_t time_origin = (nframes64_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
 787
 788         if (time_origin != leftmost_frame) {
 789                 canvas_scroll_to (time_origin);
 790         }
 791
 792         /* horizontal scrolling only */
 793         double x1, x2, y1, y2, x_delta;
 794
 795         _master_group->get_bounds(x1, y1, x2, y2);
 796         x_delta = x1 + horizontal_adjustment.get_value();
 797
 798         _master_group->move (-x_delta, 0);
 799         timebar_group->move (-x_delta, 0);
 800         cursor_group->move (-x_delta, 0);
 801         update_fixed_rulers ();
 802         redisplay_tempo (true);
 803 }
 804
 805 void
 806 Editor::scroll_canvas_vertically ()
 807 {
 808         /* vertical scrolling only */
 809
 810         double y_delta;
 811
 812         y_delta = last_trackview_group_vertical_offset - get_trackview_group_vertical_offset ();
 813         _trackview_group->move (0, y_delta);
 814
 815         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
 816                 (*i)->clip_to_viewport ();
 817         }
 818         last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
 819         /* required to keep the controls_layout in lock step with the canvas group */
 820         track_canvas->update_now ();
 821 }
 822
 823 void
 824 Editor::canvas_horizontally_scrolled ()
 825 {
 826         nframes64_t time_origin = (nframes64_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
 827
 828         if (time_origin != leftmost_frame) {
 829                 canvas_scroll_to (time_origin);
 830         }
 831         redisplay_tempo (true);
 832 }
 833
 834 void
 835 Editor::canvas_scroll_to (nframes64_t time_origin)
 836 {
 837         leftmost_frame = time_origin;
 838 }
 839
 840 void
 841 Editor::color_handler()
 842 {
 843         playhead_cursor->canvas_item.property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_PlayHead.get();
 844         verbose_canvas_cursor->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_VerboseCanvasCursor.get();
 845
 846         meter_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MeterBar.get();
 847         meter_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 848
 849         tempo_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TempoBar.get();
 850         tempo_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 851
 852         marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBar.get();
 853         marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 854
 855         cd_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CDMarkerBar.get();
 856         cd_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 857
 858         range_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeMarkerBar.get();
 859         range_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 860
 861         transport_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportMarkerBar.get();
 862         transport_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 863
 864         cd_marker_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 865         cd_marker_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 866
 867         range_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 868         range_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 869
 870         transport_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 871         transport_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 872
 873         marker_drag_line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerDragLine.get();
 874
 875         range_marker_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 876         range_marker_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 877
 878         transport_loop_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 879         transport_loop_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 880
 881         transport_punch_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 882         transport_punch_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 883
 884         transport_punchin_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 885         transport_punchout_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 886
 887         zoom_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 888         zoom_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 889
 890         rubberband_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 891         rubberband_rect->property_fill_color_rgba() = (guint32) ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 892
 893         location_marker_color = ARDOUR_UI::config()->canvasvar_LocationMarker.get();
 894         location_range_color = ARDOUR_UI::config()->canvasvar_LocationRange.get();
 895         location_cd_marker_color = ARDOUR_UI::config()->canvasvar_LocationCDMarker.get();
 896         location_loop_color = ARDOUR_UI::config()->canvasvar_LocationLoop.get();
 897         location_punch_color = ARDOUR_UI::config()->canvasvar_LocationPunch.get();
 898
 899         refresh_location_display ();
 900 /*
 901         redisplay_tempo (true);
 902
 903         if (session)
 904                 session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks); // redraw metric markers
 905 */
 906 }
 907
 908 void
 909 Editor::flush_canvas ()
 910 {
 911         if (is_mapped()) {
 912                 track_canvas->update_now ();
 913                 // gdk_window_process_updates (GTK_LAYOUT(track_canvas->gobj())->bin_window, true);
 914         }
 915 }
 916