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, 0.0);
 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, 0.0);
 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, 0.0);
 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() = 0.0;
 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() = 0.0;
 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                 range_marker_drag_rect->property_y2() = canvas_height;
 327                 transport_loop_range_rect->property_y2() = canvas_height;
 328                 transport_punch_range_rect->property_y2() = canvas_height;
 329                 transport_punchin_line->property_y2() = canvas_height;
 330                 transport_punchout_line->property_y2() = canvas_height;
 331                 vertical_adjustment.set_page_size (canvas_height);
 332         }
 333         horizontal_adjustment.set_upper (session->current_end_frame()/frames_per_unit);
 334         horizontal_adjustment.set_page_size (current_page_frames()/frames_per_unit);
 335         reset_hscrollbar_stepping ();
 336         update_fixed_rulers();
 337         redisplay_tempo (false);
 338         last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
 339         if ((vertical_adjustment.get_value() + canvas_height) >= vertical_adjustment.get_upper()) {
 340                 /*
 341                    We're increasing the size of the canvas while the bottom is visible.
 342                    We scroll down to keep in step with the controls layout.
 343                 */
 344                 vertical_adjustment.set_value (full_canvas_height - canvas_height);
 345         }
 346
 347         Resized (); /* EMIT_SIGNAL */
 348
 349         return false;
 350 }
 351
 352 void
 353 Editor::controls_layout_size_request (Requisition* req)
 354 {
 355         TreeModel::Children rows = route_display_model->children();
 356         TreeModel::Children::iterator i;
 357         double pos;
 358         bool changed = false;
 359
 360         for (pos = 0, i = rows.begin(); i != rows.end(); ++i) {
 361                 TimeAxisView *tv = (*i)[route_display_columns.tv];
 362                 if (tv != 0) {
 363                         pos += tv->effective_height;
 364                         tv->clip_to_viewport ();
 365                 }
 366         }
 367
 368         gint height = min ((gint) pos, (gint) (physical_screen_height - 600));
 369         gint width = max (edit_controls_vbox.get_width(),  controls_layout.get_width());
 370
 371         /* don't get too big. the fudge factors here are just guesses */
 372
 373         width =  min (width, (gint) (physical_screen_width - 300));
 374
 375         if ((req->width != width) || (req->height != height)) {
 376                 changed = true;
 377                 controls_layout_size_request_connection.disconnect ();
 378         }
 379
 380         if (req->width != width) {
 381                 gint vbox_width = edit_controls_vbox.get_width();
 382                 req->width = width;
 383
 384                 /* this one is important: it determines how big the layout thinks it really is, as
 385                    opposed to what it displays on the screen
 386                 */
 387                 controls_layout.property_width () = vbox_width;
 388                 controls_layout.property_width_request () = vbox_width;
 389
 390                 time_button_event_box.property_width_request () = vbox_width;
 391                 zoom_box.property_width_request () = vbox_width;
 392         }
 393
 394         if (req->height != height) {
 395                 req->height = height;
 396                 controls_layout.property_height () = (guint) floor (pos);
 397                 controls_layout.property_height_request () = height;
 398         }
 399
 400         if (changed) {
 401                 controls_layout_size_request_connection = controls_layout.signal_size_request().connect (mem_fun (*this, &Editor::controls_layout_size_request));
 402         }
 403         //cerr << "sizes = " << req->width << " " << edit_controls_vbox.get_width() << " " << controls_layout.get_width() << " " << zoom_box.get_width() << " " << time_button_frame.get_width() << endl;//DEBUG
 404 }
 405
 406 bool
 407 Editor::track_canvas_map_handler (GdkEventAny* ev)
 408 {
 409         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
 410         return false;
 411 }
 412
 413 void
 414 Editor::track_canvas_drag_data_received (const RefPtr<Gdk::DragContext>& context,
 415                                          int x, int y,
 416                                          const SelectionData& data,
 417                                          guint info, guint time)
 418 {
 419         cerr << "drop on canvas, target = " << data.get_target() << endl;
 420
 421         if (data.get_target() == "regions") {
 422                 drop_regions (context, x, y, data, info, time);
 423         } else {
 424                 drop_paths (context, x, y, data, info, time);
 425         }
 426 }
 427
 428 void
 429 Editor::drop_paths (const RefPtr<Gdk::DragContext>& context,
 430                     int x, int y,
 431                     const SelectionData& data,
 432                     guint info, guint time)
 433 {
 434         TimeAxisView* tvp;
 435         AudioTimeAxisView* tv;
 436         double cy;
 437         vector<ustring> paths;
 438         string spath;
 439         GdkEvent ev;
 440         nframes64_t frame;
 441
 442         if (convert_drop_to_paths (paths, context, x, y, data, info, time)) {
 443                 goto out;
 444         }
 445
 446         /* D-n-D coordinates are window-relative, so convert to "world" coordinates
 447          */
 448
 449         double wx;
 450         double wy;
 451
 452         track_canvas->window_to_world (x, y, wx, wy);
 453         //wx += horizontal_adjustment.get_value();
 454         //wy += vertical_adjustment.get_value();
 455
 456         ev.type = GDK_BUTTON_RELEASE;
 457         ev.button.x = wx;
 458         ev.button.y = wy;
 459
 460         frame = event_frame (&ev, 0, &cy);
 461
 462         snap_to (frame);
 463
 464         if ((tvp = trackview_by_y_position (cy)) == 0) {
 465
 466                 /* drop onto canvas background: create new tracks */
 467
 468                 frame = 0;
 469
 470                 if (Profile->get_sae() || Config->get_only_copy_imported_files()) {
 471                         do_import (paths, Editing::ImportDistinctFiles, Editing::ImportAsTrack, SrcBest, frame);
 472                 } else {
 473                         do_embed (paths, Editing::ImportDistinctFiles, ImportAsTrack, frame);
 474                 }
 475
 476         } else if ((tv = dynamic_cast<AudioTimeAxisView*>(tvp)) != 0) {
 477
 478                 /* check that its an audio track, not a bus */
 479
 480                 if (tv->get_diskstream()) {
 481                         /* select the track, then embed */
 482                         selection->set (tv);
 483
 484                         if (Profile->get_sae() || Config->get_only_copy_imported_files()) {
 485                                 do_import (paths, Editing::ImportDistinctFiles, Editing::ImportToTrack, SrcBest, frame);
 486                         } else {
 487                                 do_embed (paths, Editing::ImportDistinctFiles, ImportToTrack, frame);
 488                         }
 489                 }
 490         }
 491
 492   out:
 493         context->drag_finish (true, false, time);
 494 }
 495
 496 void
 497 Editor::drop_regions (const RefPtr<Gdk::DragContext>& context,
 498                       int x, int y,
 499                       const SelectionData& data,
 500                       guint info, guint time)
 501 {
 502         const SerializedObjectPointers<boost::shared_ptr<Region> >* sr =
 503                 reinterpret_cast<const SerializedObjectPointers<boost::shared_ptr<Region> > *> (data.get_data());
 504
 505         for (uint32_t i = 0; i < sr->cnt; ++i) {
 506
 507                 boost::shared_ptr<Region> r = sr->data[i];
 508                 boost::shared_ptr<AudioRegion> ar;
 509
 510                 if ((ar = boost::dynamic_pointer_cast<AudioRegion>(r)) != 0) {
 511                         insert_region_list_drag (ar, x, y);
 512                 }
 513         }
 514
 515         context->drag_finish (true, false, time);
 516 }
 517
 518 void
 519 Editor::maybe_autoscroll (GdkEventMotion* event)
 520 {
 521
 522         nframes64_t rightmost_frame = leftmost_frame + current_page_frames();
 523         nframes64_t frame = drag_info.current_pointer_frame;
 524         bool startit = false;
 525
 526         autoscroll_y = 0;
 527         autoscroll_x = 0;
 528         if (event->y < canvas_timebars_vsize) {
 529                 autoscroll_y = -1;
 530                 startit = true;
 531         } else if (event->y > canvas_height) {
 532                 autoscroll_y = 1;
 533                 startit = true;
 534         }
 535
 536         if (frame > rightmost_frame) {
 537
 538                 if (rightmost_frame < max_frames) {
 539                         autoscroll_x = 1;
 540                         startit = true;
 541                 }
 542
 543         } else if (frame < leftmost_frame) {
 544                 if (leftmost_frame > 0) {
 545                         autoscroll_x = -1;
 546                         startit = true;
 547                 }
 548
 549         }
 550
 551         if (!allow_vertical_scroll) {
 552                 autoscroll_y = 0;
 553         }
 554
 555         if ((autoscroll_x != last_autoscroll_x) || (autoscroll_y != last_autoscroll_y) || (autoscroll_x == 0 && autoscroll_y == 0)) {
 556                 stop_canvas_autoscroll ();
 557         }
 558
 559         if (startit && autoscroll_timeout_tag < 0) {
 560                 start_canvas_autoscroll (autoscroll_x, autoscroll_y);
 561         }
 562
 563         last_autoscroll_x = autoscroll_x;
 564         last_autoscroll_y = autoscroll_y;
 565 }
 566
 567 void
 568 Editor::maybe_autoscroll_horizontally (GdkEventMotion* event)
 569 {
 570         nframes64_t rightmost_frame = leftmost_frame + current_page_frames();
 571         nframes64_t frame = drag_info.current_pointer_frame;
 572         bool startit = false;
 573
 574         autoscroll_y = 0;
 575         autoscroll_x = 0;
 576
 577         if (frame > rightmost_frame) {
 578
 579                 if (rightmost_frame < max_frames) {
 580                         autoscroll_x = 1;
 581                         startit = true;
 582                 }
 583
 584         } else if (frame < leftmost_frame) {
 585                 if (leftmost_frame > 0) {
 586                         autoscroll_x = -1;
 587                         startit = true;
 588                 }
 589
 590         }
 591
 592         if ((autoscroll_x != last_autoscroll_x) || (autoscroll_y != last_autoscroll_y) || (autoscroll_x == 0 && autoscroll_y == 0)) {
 593                 stop_canvas_autoscroll ();
 594         }
 595
 596         if (startit && autoscroll_timeout_tag < 0) {
 597                 start_canvas_autoscroll (autoscroll_x, autoscroll_y);
 598         }
 599
 600         last_autoscroll_x = autoscroll_x;
 601         last_autoscroll_y = autoscroll_y;
 602 }
 603
 604 gint
 605 Editor::_autoscroll_canvas (void *arg)
 606 {
 607         return ((Editor *) arg)->autoscroll_canvas ();
 608 }
 609
 610 bool
 611 Editor::autoscroll_canvas ()
 612 {
 613         nframes64_t new_frame;
 614         nframes64_t limit = max_frames - current_page_frames();
 615         GdkEventMotion ev;
 616         double new_pixel;
 617         double target_pixel;
 618
 619         if (autoscroll_x_distance != 0) {
 620                 if (autoscroll_x > 0) {
 621                         autoscroll_x_distance = (unit_to_frame (drag_info.current_pointer_x) - (leftmost_frame + current_page_frames())) / 3;
 622                 } else if (autoscroll_x < 0) {
 623                         autoscroll_x_distance = (leftmost_frame - unit_to_frame (drag_info.current_pointer_x)) / 3;
 624
 625                 }
 626         }
 627
 628         if (autoscroll_y_distance != 0) {
 629                 if (autoscroll_y > 0) {
 630                         autoscroll_y_distance = (drag_info.current_pointer_y - (get_trackview_group_vertical_offset() + canvas_height)) / 3;
 631                 } else if (autoscroll_y < 0) {
 632
 633                         autoscroll_y_distance = (vertical_adjustment.get_value () - drag_info.current_pointer_y) / 3;
 634                 }
 635         }
 636
 637         if (autoscroll_x < 0) {
 638                 if (leftmost_frame < autoscroll_x_distance) {
 639                         new_frame = 0;
 640                 } else {
 641                         new_frame = leftmost_frame - autoscroll_x_distance;
 642                 }
 643         } else if (autoscroll_x > 0) {
 644                 if (leftmost_frame > limit - autoscroll_x_distance) {
 645                         new_frame = limit;
 646                 } else {
 647                         new_frame = leftmost_frame + autoscroll_x_distance;
 648                 }
 649         } else {
 650                 new_frame = leftmost_frame;
 651         }
 652
 653         double vertical_pos = vertical_adjustment.get_value();
 654
 655         if (autoscroll_y < 0) {
 656
 657                 if (vertical_pos < autoscroll_y_distance) {
 658                         new_pixel = 0;
 659                 } else {
 660                         new_pixel = vertical_pos - autoscroll_y_distance;
 661                 }
 662
 663                 target_pixel = drag_info.current_pointer_y - autoscroll_y_distance;
 664                 target_pixel = max (target_pixel, 0.0);
 665
 666         } else if (autoscroll_y > 0) {
 667
 668                 double top_of_bottom_of_canvas = full_canvas_height - canvas_height;
 669
 670                 if (vertical_pos > full_canvas_height - autoscroll_y_distance) {
 671                         new_pixel = full_canvas_height;
 672                 } else {
 673                         new_pixel = vertical_pos + autoscroll_y_distance;
 674                 }
 675
 676                 new_pixel = min (top_of_bottom_of_canvas, new_pixel);
 677
 678                 target_pixel = drag_info.current_pointer_y + autoscroll_y_distance;
 679
 680                 /* don't move to the full canvas height because the item will be invisible
 681                    (its top edge will line up with the bottom of the visible canvas.
 682                 */
 683
 684                 target_pixel = min (target_pixel, full_canvas_height - 10);
 685
 686         } else {
 687                 target_pixel = drag_info.current_pointer_y;
 688                 new_pixel = vertical_pos;
 689         }
 690
 691         if ((new_frame == 0 || new_frame == limit) && (new_pixel == 0 || new_pixel == DBL_MAX)) {
 692                 /* we are done */
 693                 return false;
 694         }
 695
 696         if (new_frame != leftmost_frame) {
 697                 reset_x_origin (new_frame);
 698         }
 699
 700         vertical_adjustment.set_value (new_pixel);
 701
 702         /* fake an event. */
 703
 704         Glib::RefPtr<Gdk::Window> canvas_window = const_cast<Editor*>(this)->track_canvas->get_window();
 705         gint x, y;
 706         Gdk::ModifierType mask;
 707         canvas_window->get_pointer (x, y, mask);
 708         ev.type = GDK_MOTION_NOTIFY;
 709         ev.state &= Gdk::BUTTON1_MASK;
 710         ev.x = x;
 711         ev.y = y;
 712
 713         motion_handler (drag_info.item, (GdkEvent*) &ev, drag_info.item_type, true);
 714
 715         autoscroll_cnt++;
 716
 717         if (autoscroll_cnt == 1) {
 718
 719                 /* connect the timeout so that we get called repeatedly */
 720
 721                 autoscroll_timeout_tag = g_idle_add ( _autoscroll_canvas, this);
 722                 return false;
 723
 724         }
 725
 726         return true;
 727 }
 728
 729 void
 730 Editor::start_canvas_autoscroll (int dx, int dy)
 731 {
 732         if (!session || autoscroll_active) {
 733                 return;
 734         }
 735
 736         stop_canvas_autoscroll ();
 737
 738         autoscroll_active = true;
 739         autoscroll_x = dx;
 740         autoscroll_y = dy;
 741         autoscroll_x_distance = (nframes64_t) floor (current_page_frames()/50.0);
 742         autoscroll_y_distance = fabs (dy * 5); /* pixels */
 743         autoscroll_cnt = 0;
 744
 745         /* do it right now, which will start the repeated callbacks */
 746
 747         autoscroll_canvas ();
 748 }
 749
 750 void
 751 Editor::stop_canvas_autoscroll ()
 752 {
 753
 754         if (autoscroll_timeout_tag >= 0) {
 755                 g_source_remove (autoscroll_timeout_tag);
 756                 autoscroll_timeout_tag = -1;
 757         }
 758
 759         autoscroll_active = false;
 760 }
 761
 762 bool
 763 Editor::left_track_canvas (GdkEventCrossing *ev)
 764 {
 765         set_entered_track (0);
 766         set_entered_regionview (0);
 767         reset_canvas_action_sensitivity (false);
 768         return false;
 769 }
 770
 771 bool
 772 Editor::entered_track_canvas (GdkEventCrossing *ev)
 773 {
 774         reset_canvas_action_sensitivity (true);
 775         return FALSE;
 776 }
 777
 778 void
 779 Editor::tie_vertical_scrolling ()
 780 {
 781         scroll_canvas_vertically ();
 782
 783         /* this will do an immediate redraw */
 784
 785         controls_layout.get_vadjustment()->set_value (vertical_adjustment.get_value());
 786 }
 787
 788 void
 789 Editor::scroll_canvas_horizontally ()
 790 {
 791         nframes64_t time_origin = (nframes64_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
 792
 793         if (time_origin != leftmost_frame) {
 794                 canvas_scroll_to (time_origin);
 795         }
 796
 797         /* horizontal scrolling only */
 798         double x1, x2, y1, y2, x_delta;
 799
 800         _master_group->get_bounds(x1, y1, x2, y2);
 801         x_delta = x1 + horizontal_adjustment.get_value();
 802
 803         _master_group->move (-x_delta, 0);
 804         timebar_group->move (-x_delta, 0);
 805         cursor_group->move (-x_delta, 0);
 806         update_fixed_rulers ();
 807         redisplay_tempo (true);
 808
 809 }
 810
 811 void
 812 Editor::scroll_canvas_vertically ()
 813 {
 814         /* vertical scrolling only */
 815
 816         double y_delta;
 817
 818         y_delta = last_trackview_group_vertical_offset - get_trackview_group_vertical_offset ();
 819         _trackview_group->move (0, y_delta);
 820
 821         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
 822                 (*i)->clip_to_viewport ();
 823         }
 824         last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
 825         /* required to keep the controls_layout in lock step with the canvas group */
 826         track_canvas->update_now ();
 827 }
 828
 829 void
 830 Editor::canvas_horizontally_scrolled ()
 831 {
 832         nframes64_t time_origin = (nframes64_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
 833
 834         if (time_origin != leftmost_frame) {
 835                 canvas_scroll_to (time_origin);
 836         }
 837         redisplay_tempo (true);
 838 }
 839
 840 void
 841 Editor::canvas_scroll_to (nframes64_t time_origin)
 842 {
 843         leftmost_frame = time_origin;
 844         nframes64_t rightmost_frame = leftmost_frame + current_page_frames ();
 845
 846         if (rightmost_frame > last_canvas_frame) {
 847                 last_canvas_frame = rightmost_frame;
 848                 //reset_scrolling_region ();
 849         }
 850
 851 }
 852
 853 void
 854 Editor::color_handler()
 855 {
 856         playhead_cursor->canvas_item.property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_PlayHead.get();
 857         verbose_canvas_cursor->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_VerboseCanvasCursor.get();
 858
 859         meter_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MeterBar.get();
 860         meter_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 861
 862         tempo_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TempoBar.get();
 863         tempo_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 864
 865         marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBar.get();
 866         marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 867
 868         cd_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CDMarkerBar.get();
 869         cd_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 870
 871         range_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeMarkerBar.get();
 872         range_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 873
 874         transport_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportMarkerBar.get();
 875         transport_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 876
 877         cd_marker_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 878         cd_marker_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 879
 880         range_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 881         range_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 882
 883         transport_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 884         transport_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 885
 886         marker_drag_line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerDragLine.get();
 887
 888         range_marker_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 889         range_marker_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 890
 891         transport_loop_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 892         transport_loop_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 893
 894         transport_punch_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 895         transport_punch_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 896
 897         transport_punchin_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 898         transport_punchout_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 899
 900         zoom_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 901         zoom_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 902
 903         rubberband_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 904         rubberband_rect->property_fill_color_rgba() = (guint32) ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 905
 906         location_marker_color = ARDOUR_UI::config()->canvasvar_LocationMarker.get();
 907         location_range_color = ARDOUR_UI::config()->canvasvar_LocationRange.get();
 908         location_cd_marker_color = ARDOUR_UI::config()->canvasvar_LocationCDMarker.get();
 909         location_loop_color = ARDOUR_UI::config()->canvasvar_LocationLoop.get();
 910         location_punch_color = ARDOUR_UI::config()->canvasvar_LocationPunch.get();
 911
 912         refresh_location_display ();
 913 /*
 914         redisplay_tempo (true);
 915
 916         if (session)
 917                 session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks); // redraw metric markers
 918 */
 919 }
 920
 921 void
 922 Editor::flush_canvas ()
 923 {
 924         if (is_mapped()) {
 925                 track_canvas->update_now ();
 926                 // gdk_window_process_updates (GTK_LAYOUT(track_canvas->gobj())->bin_window, true);
 927         }
 928 }
 929