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 #ifdef __APPLE__
  21 #define Rect AppleHasItsOwnRect
  22 #include <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacTypes.h>
  23 #undef Rect
  24 #endif /* __APPLE__ */
  25
  26 #include <libgnomecanvasmm/init.h>
  27 #include <libgnomecanvasmm/pixbuf.h>
  28 #include <jack/types.h>
  29 #include <gtkmm2ext/utils.h>
  30
  31 #include <ardour/audioregion.h>
  32 #include <ardour/profile.h>
  33
  34 #include "ardour_ui.h"
  35 #include "editor.h"
  36 #include "waveview.h"
  37 #include "simplerect.h"
  38 #include "simpleline.h"
  39 #include "imageframe.h"
  40 #include "waveview_p.h"
  41 #include "simplerect_p.h"
  42 #include "simpleline_p.h"
  43 #include "imageframe_p.h"
  44 #include "canvas_impl.h"
  45 #include "editing.h"
  46 #include "rgb_macros.h"
  47 #include "utils.h"
  48 #include "time_axis_view.h"
  49 #include "audio_time_axis.h"
  50
  51 #include "i18n.h"
  52
  53 using namespace std;
  54 using namespace sigc;
  55 using namespace ARDOUR;
  56 using namespace PBD;
  57 using namespace Gtk;
  58 using namespace Glib;
  59 using namespace Gtkmm2ext;
  60 using namespace Editing;
  61
  62 /* XXX this is a hack. it ought to be the maximum value of an nframes64_t */
  63
  64 const double max_canvas_coordinate = (double) JACK_MAX_FRAMES;
  65
  66 extern "C"
  67 {
  68
  69 GType gnome_canvas_simpleline_get_type(void);
  70 GType gnome_canvas_simplerect_get_type(void);
  71 GType gnome_canvas_waveview_get_type(void);
  72 GType gnome_canvas_imageframe_get_type(void);
  73
  74 }
  75
  76 static void ardour_canvas_type_init()
  77 {
  78         // Map gtypes to gtkmm wrapper-creation functions:
  79
  80         Glib::wrap_register(gnome_canvas_simpleline_get_type(), &Gnome::Canvas::SimpleLine_Class::wrap_new);
  81         Glib::wrap_register(gnome_canvas_simplerect_get_type(), &Gnome::Canvas::SimpleRect_Class::wrap_new);
  82         Glib::wrap_register(gnome_canvas_waveview_get_type(), &Gnome::Canvas::WaveView_Class::wrap_new);
  83         Glib::wrap_register(gnome_canvas_imageframe_get_type(), &Gnome::Canvas::ImageFrame_Class::wrap_new);
  84
  85         // Register the gtkmm gtypes:
  86
  87         (void) Gnome::Canvas::WaveView::get_type();
  88         (void) Gnome::Canvas::SimpleLine::get_type();
  89         (void) Gnome::Canvas::SimpleRect::get_type();
  90         (void) Gnome::Canvas::ImageFrame::get_type();
  91 }
  92
  93 void
  94 Editor::initialize_canvas ()
  95 {
  96         if (getenv ("ARDOUR_NON_AA_CANVAS")) {
  97                 track_canvas = new ArdourCanvas::Canvas ();
  98         } else {
  99                 track_canvas = new ArdourCanvas::CanvasAA ();
 100         }
 101
 102         ArdourCanvas::init ();
 103         ardour_canvas_type_init ();
 104
 105         /* don't try to center the canvas */
 106
 107         track_canvas->set_center_scroll_region (false);
 108         track_canvas->set_dither (Gdk::RGB_DITHER_NONE);
 109
 110         Glib::RefPtr<Gdk::Screen> screen = get_screen();
 111
 112         if (!screen) {
 113                 screen = Gdk::Screen::get_default();
 114         }
 115         physical_screen_width = screen->get_width ();
 116         physical_screen_height = screen->get_height ();
 117
 118         /* stuff for the verbose canvas cursor */
 119
 120         Pango::FontDescription* font = get_font_for_style (N_("VerboseCanvasCursor"));
 121
 122         verbose_canvas_cursor = new ArdourCanvas::NoEventText (*track_canvas->root());
 123         verbose_canvas_cursor->property_font_desc() = *font;
 124         verbose_canvas_cursor->property_anchor() = ANCHOR_NW;
 125
 126         delete font;
 127
 128         verbose_cursor_visible = false;
 129
 130         /* on the bottom, an image */
 131
 132         if (Profile->get_sae()) {
 133                 Image img (::get_icon (X_("saelogo")));
 134                 logo_item = new ArdourCanvas::Pixbuf (*track_canvas->root(), 0.0, 0.0, img.get_pixbuf());
 135                 // logo_item->property_height_in_pixels() = true;
 136                 // logo_item->property_width_in_pixels() = true;
 137                 // logo_item->property_height_set() = true;
 138                 // logo_item->property_width_set() = true;
 139                 logo_item->show ();
 140         }
 141
 142         /* a group to hold time (measure) lines */
 143         time_line_group = new ArdourCanvas::Group (*track_canvas->root());
 144
 145 #ifdef GTKOSX
 146         /*XXX please don't laugh. this actually improves canvas performance on osx */
 147         bogus_background_rect =  new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, max_canvas_coordinate/3, physical_screen_height);
 148         bogus_background_rect->property_outline_pixels() = 0;
 149 #endif
 150         transport_loop_range_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, physical_screen_height);
 151         transport_loop_range_rect->property_outline_pixels() = 1;
 152         transport_loop_range_rect->hide();
 153
 154         transport_punch_range_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, physical_screen_height);
 155         transport_punch_range_rect->property_outline_pixels() = 0;
 156         transport_punch_range_rect->hide();
 157
 158         _background_group = new ArdourCanvas::Group (*track_canvas->root());
 159         _master_group = new ArdourCanvas::Group (*track_canvas->root());
 160
 161         range_marker_drag_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, physical_screen_height);
 162         range_marker_drag_rect->hide ();
 163
 164         _trackview_group = new ArdourCanvas::Group (*_master_group);
 165         _region_motion_group = new ArdourCanvas::Group (*_trackview_group);
 166
 167         meter_bar_group = new ArdourCanvas::Group (*track_canvas->root ());
 168         if (Profile->get_sae()) {
 169                 meter_bar = new ArdourCanvas::SimpleRect (*meter_bar_group, 0.0, 0.0, physical_screen_width, timebar_height - 1);
 170                 meter_bar->property_outline_pixels() = 1;
 171         } else {
 172                 meter_bar = new ArdourCanvas::SimpleRect (*meter_bar_group, 0.0, 0.0, physical_screen_width, timebar_height);
 173                 meter_bar->property_outline_pixels() = 0;
 174         }
 175         meter_bar->property_outline_what() = (0x1 | 0x8);
 176
 177         tempo_bar_group = new ArdourCanvas::Group (*track_canvas->root ());
 178         if (Profile->get_sae()) {
 179                 tempo_bar = new ArdourCanvas::SimpleRect (*tempo_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height - 1));
 180                 tempo_bar->property_outline_pixels() = 1;
 181         } else {
 182                 tempo_bar = new ArdourCanvas::SimpleRect (*tempo_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height));
 183                 tempo_bar->property_outline_pixels() = 0;
 184         }
 185         tempo_bar->property_outline_what() = (0x1 | 0x8);
 186
 187         range_marker_bar_group = new ArdourCanvas::Group (*track_canvas->root ());
 188         if (Profile->get_sae()) {
 189                 range_marker_bar = new ArdourCanvas::SimpleRect (*range_marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height - 1));
 190                 range_marker_bar->property_outline_pixels() = 1;
 191         } else {
 192                 range_marker_bar = new ArdourCanvas::SimpleRect (*range_marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height));
 193                 range_marker_bar->property_outline_pixels() = 0;
 194         }
 195         range_marker_bar->property_outline_what() = (0x1 | 0x8);
 196
 197         transport_marker_bar_group = new ArdourCanvas::Group (*track_canvas->root ());
 198         if (Profile->get_sae()) {
 199                 transport_marker_bar = new ArdourCanvas::SimpleRect (*transport_marker_bar_group, 0.0, 0.0,  physical_screen_width, (timebar_height - 1));
 200                 transport_marker_bar->property_outline_pixels() = 1;
 201         } else {
 202                 transport_marker_bar = new ArdourCanvas::SimpleRect (*transport_marker_bar_group, 0.0, 0.0,  physical_screen_width, (timebar_height));
 203                 transport_marker_bar->property_outline_pixels() = 0;
 204         }
 205         transport_marker_bar->property_outline_what() = (0x1 | 0x8);
 206
 207         marker_bar_group = new ArdourCanvas::Group (*track_canvas->root ());
 208         if (Profile->get_sae()) {
 209                 marker_bar = new ArdourCanvas::SimpleRect (*marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height - 1));
 210                 marker_bar->property_outline_pixels() = 1;
 211         } else {
 212                 marker_bar = new ArdourCanvas::SimpleRect (*marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height));
 213                 marker_bar->property_outline_pixels() = 0;
 214         }
 215         marker_bar->property_outline_what() = (0x1 | 0x8);
 216
 217         cd_marker_bar_group = new ArdourCanvas::Group (*track_canvas->root ());
 218         if (Profile->get_sae()) {
 219                 cd_marker_bar = new ArdourCanvas::SimpleRect (*cd_marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height - 1));
 220                 cd_marker_bar->property_outline_pixels() = 1;
 221         } else {
 222                 cd_marker_bar = new ArdourCanvas::SimpleRect (*cd_marker_bar_group, 0.0, 0.0, physical_screen_width, (timebar_height));
 223                 cd_marker_bar->property_outline_pixels() = 0;
 224         }
 225         cd_marker_bar->property_outline_what() = (0x1 | 0x8);
 226
 227         timebar_group =  new ArdourCanvas::Group (*track_canvas->root(), 0.0, 0.0);
 228         cursor_group = new ArdourCanvas::Group (*track_canvas->root(), 0.0, 0.0);
 229
 230         meter_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height * 5.0);
 231         tempo_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height * 4.0);
 232         range_marker_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height * 3.0);
 233         transport_marker_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height * 2.0);
 234         marker_group = new ArdourCanvas::Group (*timebar_group, 0.0, timebar_height);
 235         cd_marker_group = new ArdourCanvas::Group (*timebar_group, 0.0, 0.0);
 236
 237         marker_drag_line_points.push_back(Gnome::Art::Point(0.0, 0.0));
 238         marker_drag_line_points.push_back(Gnome::Art::Point(0.0, physical_screen_height));
 239
 240         marker_drag_line = new ArdourCanvas::Line (*timebar_group);
 241         marker_drag_line->property_width_pixels() = 1;
 242         marker_drag_line->property_points() = marker_drag_line_points;
 243         marker_drag_line->hide();
 244
 245         cd_marker_bar_drag_rect = new ArdourCanvas::SimpleRect (*cd_marker_group, 0.0, 0.0, 100, timebar_height);
 246         cd_marker_bar_drag_rect->property_outline_pixels() = 0;
 247         cd_marker_bar_drag_rect->hide ();
 248
 249         range_bar_drag_rect = new ArdourCanvas::SimpleRect (*range_marker_group, 0.0, 0.0, 100, timebar_height);
 250         range_bar_drag_rect->property_outline_pixels() = 0;
 251         range_bar_drag_rect->hide ();
 252
 253         transport_bar_drag_rect = new ArdourCanvas::SimpleRect (*transport_marker_group, 0.0, 0.0, 100, timebar_height);
 254         transport_bar_drag_rect->property_outline_pixels() = 0;
 255         transport_bar_drag_rect->hide ();
 256
 257         transport_punchin_line = new ArdourCanvas::SimpleLine (*_master_group);
 258         transport_punchin_line->property_x1() = 0.0;
 259         transport_punchin_line->property_y1() = 0.0;
 260         transport_punchin_line->property_x2() = 0.0;
 261         transport_punchin_line->property_y2() = physical_screen_height;
 262         transport_punchin_line->hide ();
 263
 264         transport_punchout_line  = new ArdourCanvas::SimpleLine (*_master_group);
 265         transport_punchout_line->property_x1() = 0.0;
 266         transport_punchout_line->property_y1() = 0.0;
 267         transport_punchout_line->property_x2() = 0.0;
 268         transport_punchout_line->property_y2() = physical_screen_height;
 269         transport_punchout_line->hide();
 270
 271         // used to show zoom mode active zooming
 272         zoom_rect = new ArdourCanvas::SimpleRect (*_master_group, 0.0, 0.0, 0.0, 0.0);
 273         zoom_rect->property_outline_pixels() = 1;
 274         zoom_rect->hide();
 275
 276         zoom_rect->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_zoom_rect_event), (ArdourCanvas::Item*) 0));
 277
 278         // used as rubberband rect
 279         rubberband_rect = new ArdourCanvas::SimpleRect (*_trackview_group, 0.0, 0.0, 0.0, 0.0);
 280
 281         rubberband_rect->property_outline_pixels() = 1;
 282         rubberband_rect->hide();
 283
 284         tempo_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_tempo_bar_event), tempo_bar));
 285         meter_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_meter_bar_event), meter_bar));
 286         marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_marker_bar_event), marker_bar));
 287         cd_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_cd_marker_bar_event), cd_marker_bar));
 288         range_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_range_marker_bar_event), range_marker_bar));
 289         transport_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_transport_marker_bar_event), transport_marker_bar));
 290
 291         playhead_cursor = new Cursor (*this, &Editor::canvas_playhead_cursor_event);
 292
 293         if (logo_item) {
 294                 logo_item->lower_to_bottom ();
 295         }
 296         /* need to handle 4 specific types of events as catch-alls */
 297
 298         track_canvas->signal_scroll_event().connect (mem_fun (*this, &Editor::track_canvas_scroll_event));
 299         track_canvas->signal_motion_notify_event().connect (mem_fun (*this, &Editor::track_canvas_motion_notify_event));
 300         track_canvas->signal_button_press_event().connect (mem_fun (*this, &Editor::track_canvas_button_press_event));
 301         track_canvas->signal_button_release_event().connect (mem_fun (*this, &Editor::track_canvas_button_release_event));
 302
 303         track_canvas->set_name ("EditorMainCanvas");
 304         track_canvas->add_events (Gdk::POINTER_MOTION_HINT_MASK|Gdk::SCROLL_MASK);
 305         track_canvas->signal_leave_notify_event().connect (mem_fun(*this, &Editor::left_track_canvas));
 306         track_canvas->signal_enter_notify_event().connect (mem_fun(*this, &Editor::entered_track_canvas));
 307         track_canvas->set_flags (CAN_FOCUS);
 308
 309         /* set up drag-n-drop */
 310
 311         vector<TargetEntry> target_table;
 312
 313         // Drag-N-Drop from the region list can generate this target
 314         target_table.push_back (TargetEntry ("regions"));
 315
 316         target_table.push_back (TargetEntry ("text/plain"));
 317         target_table.push_back (TargetEntry ("text/uri-list"));
 318         target_table.push_back (TargetEntry ("application/x-rootwin-drop"));
 319
 320         track_canvas->drag_dest_set (target_table);
 321         track_canvas->signal_drag_data_received().connect (mem_fun(*this, &Editor::track_canvas_drag_data_received));
 322
 323         track_canvas->signal_size_allocate().connect (mem_fun(*this, &Editor::track_canvas_allocate));
 324
 325         ColorsChanged.connect (mem_fun (*this, &Editor::color_handler));
 326         color_handler();
 327
 328 }
 329
 330 void
 331 Editor::track_canvas_allocate (Gtk::Allocation alloc)
 332 {
 333         canvas_allocation = alloc;
 334         track_canvas_size_allocated ();
 335 }
 336
 337 bool
 338 Editor::track_canvas_size_allocated ()
 339 {
 340         bool height_changed = canvas_height != canvas_allocation.get_height();
 341
 342         canvas_width = canvas_allocation.get_width();
 343         canvas_height = canvas_allocation.get_height();
 344
 345         if (session) {
 346                 TrackViewList::iterator i;
 347                 for (i = track_views.begin(); i != track_views.end(); ++i) {
 348                         (*i)->clip_to_viewport ();
 349                 }
 350         }
 351
 352         if (height_changed) {
 353                 if (playhead_cursor) {
 354                         playhead_cursor->set_length (canvas_height);
 355                 }
 356
 357                 for (MarkerSelection::iterator x = selection->markers.begin(); x != selection->markers.end(); ++x) {
 358                         (*x)->set_line_vpos (0, canvas_height);
 359                 }
 360
 361                 vertical_adjustment.set_page_size (canvas_height);
 362                 last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
 363                 if ((vertical_adjustment.get_value() + canvas_height) >= vertical_adjustment.get_upper()) {
 364                         /*
 365                            We're increasing the size of the canvas while the bottom is visible.
 366                            We scroll down to keep in step with the controls layout.
 367                         */
 368                         vertical_adjustment.set_value (full_canvas_height - canvas_height);
 369                 }
 370         }
 371
 372         handle_new_duration ();
 373         reset_hscrollbar_stepping ();
 374         update_fixed_rulers();
 375         redisplay_tempo (false);
 376
 377         Resized (); /* EMIT_SIGNAL */
 378
 379         return false;
 380 }
 381
 382 void
 383 Editor::controls_layout_size_request (Requisition* req)
 384 {
 385         TreeModel::Children rows = route_display_model->children();
 386         TreeModel::Children::iterator i;
 387         double pos;
 388         bool changed = false;
 389
 390         for (pos = 0, i = rows.begin(); i != rows.end(); ++i) {
 391                 TimeAxisView *tv = (*i)[route_display_columns.tv];
 392                 if (tv != 0) {
 393                         pos += tv->effective_height;
 394                 }
 395         }
 396
 397         gint height = min ((gint) pos, (gint) (physical_screen_height - 600));
 398         gint width = max (edit_controls_vbox.get_width(),  controls_layout.get_width());
 399
 400         /* don't get too big. the fudge factors here are just guesses */
 401
 402         width =  min (width, (gint) (physical_screen_width - 300));
 403
 404         if ((req->width != width) || (req->height != height)) {
 405                 changed = true;
 406                 controls_layout_size_request_connection.disconnect ();
 407         }
 408
 409         if (req->width != width) {
 410                 gint vbox_width = edit_controls_vbox.get_width();
 411                 req->width = width;
 412
 413                 /* this one is important: it determines how big the layout thinks it really is, as
 414                    opposed to what it displays on the screen
 415                 */
 416                 controls_layout.property_width () = vbox_width;
 417                 controls_layout.property_width_request () = vbox_width;
 418
 419                 time_button_event_box.property_width_request () = vbox_width;
 420                 zoom_box.property_width_request () = vbox_width;
 421         }
 422
 423         if (req->height != height) {
 424                 req->height = height;
 425                 controls_layout.property_height () = (guint) floor (pos);
 426                 controls_layout.property_height_request () = height;
 427         }
 428
 429         if (changed) {
 430                 controls_layout_size_request_connection = controls_layout.signal_size_request().connect (mem_fun (*this, &Editor::controls_layout_size_request));
 431         }
 432         //cerr << "sizes = " << req->width << " " << edit_controls_vbox.get_width() << " " << controls_layout.get_width() << " " << zoom_box.get_width() << " " << time_button_frame.get_width() << endl;//DEBUG
 433 }
 434
 435 bool
 436 Editor::track_canvas_map_handler (GdkEventAny* ev)
 437 {
 438         track_canvas->get_window()->set_cursor (*current_canvas_cursor);
 439         return false;
 440 }
 441
 442 void
 443 Editor::track_canvas_drag_data_received (const RefPtr<Gdk::DragContext>& context,
 444                                          int x, int y,
 445                                          const SelectionData& data,
 446                                          guint info, guint time)
 447 {
 448         if (data.get_target() == "regions") {
 449                 drop_regions (context, x, y, data, info, time);
 450         } else {
 451                 drop_paths (context, x, y, data, info, time);
 452         }
 453 }
 454
 455 bool
 456 Editor::idle_drop_paths (vector<ustring> paths, nframes64_t frame, double ypos)
 457 {
 458         drop_paths_part_two (paths, frame, ypos);
 459         return false;
 460 }
 461
 462 void
 463 Editor::drop_paths_part_two (const vector<ustring>& paths, nframes64_t frame, double ypos)
 464 {
 465         TimeAxisView* tvp;
 466         AudioTimeAxisView* tv;
 467
 468         if ((tvp = trackview_by_y_position (ypos)) == 0) {
 469
 470                 /* drop onto canvas background: create new tracks */
 471
 472                 frame = 0;
 473
 474                 if (Profile->get_sae() || Config->get_only_copy_imported_files()) {
 475                         do_import (paths, Editing::ImportDistinctFiles, Editing::ImportAsTrack, SrcBest, frame);
 476                 } else {
 477                         do_embed (paths, Editing::ImportDistinctFiles, ImportAsTrack, frame);
 478                 }
 479
 480         } else if ((tv = dynamic_cast<AudioTimeAxisView*>(tvp)) != 0) {
 481
 482                 /* check that its an audio track, not a bus */
 483
 484                 if (tv->get_diskstream()) {
 485                         /* select the track, then embed/import */
 486                         selection->set (tv);
 487
 488                         if (Profile->get_sae() || Config->get_only_copy_imported_files()) {
 489                                 do_import (paths, Editing::ImportSerializeFiles, Editing::ImportToTrack, SrcBest, frame);
 490                         } else {
 491                                 do_embed (paths, Editing::ImportSerializeFiles, ImportToTrack, frame);
 492                         }
 493                 }
 494         }
 495 }
 496
 497 void
 498 Editor::drop_paths (const RefPtr<Gdk::DragContext>& context,
 499                     int x, int y,
 500                     const SelectionData& data,
 501                     guint info, guint time)
 502 {
 503         vector<ustring> paths;
 504         GdkEvent ev;
 505         nframes64_t frame;
 506         double wx;
 507         double wy;
 508         double cy;
 509
 510         if (convert_drop_to_paths (paths, context, x, y, data, info, time) == 0) {
 511
 512                 /* D-n-D coordinates are window-relative, so convert to "world" coordinates
 513                  */
 514
 515                 track_canvas->window_to_world (x, y, wx, wy);
 516
 517                 ev.type = GDK_BUTTON_RELEASE;
 518                 ev.button.x = wx;
 519                 ev.button.y = wy;
 520
 521                 frame = event_frame (&ev, 0, &cy);
 522
 523                 snap_to (frame);
 524
 525 #ifdef GTKOSX
 526                 /* We are not allowed to call recursive main event loops from within
 527                    the main event loop with GTK/Quartz. Since import/embed wants
 528                    to push up a progress dialog, defer all this till we go idle.
 529                 */
 530                 Glib::signal_idle().connect (bind (mem_fun (*this, &Editor::idle_drop_paths), paths, frame, cy));
 531 #else
 532                 drop_paths_part_two (paths, frame, cy);
 533 #endif
 534         }
 535
 536         context->drag_finish (true, false, time);
 537 }
 538
 539 void
 540 Editor::drop_regions (const RefPtr<Gdk::DragContext>& context,
 541                       int x, int y,
 542                       const SelectionData& data,
 543                       guint info, guint time)
 544 {
 545         std::list<boost::shared_ptr<Region> > regions;
 546         region_list_display.get_object_drag_data (regions);
 547
 548         for (list<boost::shared_ptr<Region> >::iterator r = regions.begin(); r != regions.end(); ++r) {
 549
 550                 boost::shared_ptr<AudioRegion> ar;
 551
 552                 if ((ar = boost::dynamic_pointer_cast<AudioRegion>(*r)) != 0) {
 553                         insert_region_list_drag (ar, x, y);
 554                 }
 555         }
 556
 557         context->drag_finish (true, false, time);
 558 }
 559
 560 void
 561 Editor::maybe_autoscroll (GdkEventMotion* event)
 562 {
 563
 564         nframes64_t rightmost_frame = leftmost_frame + current_page_frames();
 565         nframes64_t frame = drag_info.current_pointer_frame;
 566         bool startit = false;
 567
 568         autoscroll_y = 0;
 569         autoscroll_x = 0;
 570         if (event->y < canvas_timebars_vsize) {
 571                 autoscroll_y = -1;
 572                 startit = true;
 573         } else if (event->y > canvas_height) {
 574                 autoscroll_y = 1;
 575                 startit = true;
 576         }
 577
 578         if (frame > rightmost_frame) {
 579
 580                 if (rightmost_frame < max_frames) {
 581                         autoscroll_x = 1;
 582                         startit = true;
 583                 }
 584
 585         } else if (frame < leftmost_frame) {
 586                 if (leftmost_frame > 0) {
 587                         autoscroll_x = -1;
 588                         startit = true;
 589                 }
 590
 591         }
 592
 593         if (!allow_vertical_scroll) {
 594                 autoscroll_y = 0;
 595         }
 596
 597         if ((autoscroll_x != last_autoscroll_x) || (autoscroll_y != last_autoscroll_y) || (autoscroll_x == 0 && autoscroll_y == 0)) {
 598                 stop_canvas_autoscroll ();
 599         }
 600
 601         if (startit && autoscroll_timeout_tag < 0) {
 602                 start_canvas_autoscroll (autoscroll_x, autoscroll_y);
 603         }
 604
 605         last_autoscroll_x = autoscroll_x;
 606         last_autoscroll_y = autoscroll_y;
 607 }
 608
 609 void
 610 Editor::maybe_autoscroll_horizontally (GdkEventMotion* event)
 611 {
 612         nframes64_t rightmost_frame = leftmost_frame + current_page_frames();
 613         nframes64_t frame = drag_info.current_pointer_frame;
 614         bool startit = false;
 615
 616         autoscroll_y = 0;
 617         autoscroll_x = 0;
 618
 619         if (frame > rightmost_frame) {
 620
 621                 if (rightmost_frame < max_frames) {
 622                         autoscroll_x = 1;
 623                         startit = true;
 624                 }
 625
 626         } else if (frame < leftmost_frame) {
 627                 if (leftmost_frame > 0) {
 628                         autoscroll_x = -1;
 629                         startit = true;
 630                 }
 631
 632         }
 633
 634         if ((autoscroll_x != last_autoscroll_x) || (autoscroll_y != last_autoscroll_y) || (autoscroll_x == 0 && autoscroll_y == 0)) {
 635                 stop_canvas_autoscroll ();
 636         }
 637
 638         if (startit && autoscroll_timeout_tag < 0) {
 639                 start_canvas_autoscroll (autoscroll_x, autoscroll_y);
 640         }
 641
 642         last_autoscroll_x = autoscroll_x;
 643         last_autoscroll_y = autoscroll_y;
 644 }
 645
 646 gint
 647 Editor::_autoscroll_canvas (void *arg)
 648 {
 649         return ((Editor *) arg)->autoscroll_canvas ();
 650 }
 651
 652 bool
 653 Editor::autoscroll_canvas ()
 654 {
 655         nframes64_t new_frame;
 656         nframes64_t limit = max_frames - current_page_frames();
 657         GdkEventMotion ev;
 658         double new_pixel;
 659         double target_pixel;
 660
 661         if (autoscroll_x_distance != 0) {
 662                 if (autoscroll_x > 0) {
 663                         autoscroll_x_distance = (unit_to_frame (drag_info.current_pointer_x) - (leftmost_frame + current_page_frames())) / 3;
 664                 } else if (autoscroll_x < 0) {
 665                         autoscroll_x_distance = (leftmost_frame - unit_to_frame (drag_info.current_pointer_x)) / 3;
 666
 667                 }
 668         }
 669
 670         if (autoscroll_y_distance != 0) {
 671                 if (autoscroll_y > 0) {
 672                         autoscroll_y_distance = (drag_info.current_pointer_y - (get_trackview_group_vertical_offset() + canvas_height)) / 3;
 673                 } else if (autoscroll_y < 0) {
 674
 675                         autoscroll_y_distance = (vertical_adjustment.get_value () - drag_info.current_pointer_y) / 3;
 676                 }
 677         }
 678
 679         if (autoscroll_x < 0) {
 680                 if (leftmost_frame < autoscroll_x_distance) {
 681                         new_frame = 0;
 682                 } else {
 683                         new_frame = leftmost_frame - autoscroll_x_distance;
 684                 }
 685         } else if (autoscroll_x > 0) {
 686                 if (leftmost_frame > limit - autoscroll_x_distance) {
 687                         new_frame = limit;
 688                 } else {
 689                         new_frame = leftmost_frame + autoscroll_x_distance;
 690                 }
 691         } else {
 692                 new_frame = leftmost_frame;
 693         }
 694
 695         double vertical_pos = vertical_adjustment.get_value();
 696
 697         if (autoscroll_y < 0) {
 698
 699                 if (vertical_pos < autoscroll_y_distance) {
 700                         new_pixel = 0;
 701                 } else {
 702                         new_pixel = vertical_pos - autoscroll_y_distance;
 703                 }
 704
 705                 target_pixel = drag_info.current_pointer_y - autoscroll_y_distance;
 706                 target_pixel = max (target_pixel, 0.0);
 707
 708         } else if (autoscroll_y > 0) {
 709
 710                 double top_of_bottom_of_canvas = full_canvas_height - canvas_height;
 711
 712                 if (vertical_pos > full_canvas_height - autoscroll_y_distance) {
 713                         new_pixel = full_canvas_height;
 714                 } else {
 715                         new_pixel = vertical_pos + autoscroll_y_distance;
 716                 }
 717
 718                 new_pixel = min (top_of_bottom_of_canvas, new_pixel);
 719
 720                 target_pixel = drag_info.current_pointer_y + autoscroll_y_distance;
 721
 722                 /* don't move to the full canvas height because the item will be invisible
 723                    (its top edge will line up with the bottom of the visible canvas.
 724                 */
 725
 726                 target_pixel = min (target_pixel, full_canvas_height - 10);
 727
 728         } else {
 729                 target_pixel = drag_info.current_pointer_y;
 730                 new_pixel = vertical_pos;
 731         }
 732
 733         if ((new_frame == 0 || new_frame == limit) && (new_pixel == 0 || new_pixel == DBL_MAX)) {
 734                 /* we are done */
 735                 return false;
 736         }
 737
 738         if (new_frame != leftmost_frame) {
 739                 reset_x_origin (new_frame);
 740         }
 741
 742         vertical_adjustment.set_value (new_pixel);
 743
 744         /* fake an event. */
 745
 746         Glib::RefPtr<Gdk::Window> canvas_window = const_cast<Editor*>(this)->track_canvas->get_window();
 747         gint x, y;
 748         Gdk::ModifierType mask;
 749         canvas_window->get_pointer (x, y, mask);
 750         ev.type = GDK_MOTION_NOTIFY;
 751         ev.state &= Gdk::BUTTON1_MASK;
 752         ev.x = x;
 753         ev.y = y;
 754
 755         motion_handler (drag_info.item, (GdkEvent*) &ev, drag_info.item_type, true);
 756
 757         autoscroll_cnt++;
 758
 759         if (autoscroll_cnt == 1) {
 760
 761                 /* connect the timeout so that we get called repeatedly */
 762
 763                 autoscroll_timeout_tag = g_idle_add ( _autoscroll_canvas, this);
 764                 return false;
 765
 766         }
 767
 768         return true;
 769 }
 770
 771 void
 772 Editor::start_canvas_autoscroll (int dx, int dy)
 773 {
 774         if (!session || autoscroll_active) {
 775                 return;
 776         }
 777
 778         stop_canvas_autoscroll ();
 779
 780         autoscroll_active = true;
 781         autoscroll_x = dx;
 782         autoscroll_y = dy;
 783         autoscroll_x_distance = (nframes64_t) floor (current_page_frames()/50.0);
 784         autoscroll_y_distance = fabs (dy * 5); /* pixels */
 785         autoscroll_cnt = 0;
 786
 787         /* do it right now, which will start the repeated callbacks */
 788
 789         autoscroll_canvas ();
 790 }
 791
 792 void
 793 Editor::stop_canvas_autoscroll ()
 794 {
 795
 796         if (autoscroll_timeout_tag >= 0) {
 797                 g_source_remove (autoscroll_timeout_tag);
 798                 autoscroll_timeout_tag = -1;
 799         }
 800
 801         autoscroll_active = false;
 802 }
 803
 804 bool
 805 Editor::left_track_canvas (GdkEventCrossing *ev)
 806 {
 807         set_entered_track (0);
 808         set_entered_regionview (0);
 809         reset_canvas_action_sensitivity (false);
 810         return false;
 811 }
 812
 813 bool
 814 Editor::entered_track_canvas (GdkEventCrossing *ev)
 815 {
 816         reset_canvas_action_sensitivity (true);
 817         return FALSE;
 818 }
 819
 820 void
 821 Editor::tie_vertical_scrolling ()
 822 {
 823         scroll_canvas_vertically ();
 824
 825         /* this will do an immediate redraw */
 826
 827         controls_layout.get_vadjustment()->set_value (vertical_adjustment.get_value());
 828 }
 829
 830 void
 831 Editor::scroll_canvas_horizontally ()
 832 {
 833         /* horizontal scrolling only */
 834         double x1, y1, x2, y2, x_delta;
 835         _master_group->get_bounds (x1, y1, x2, y2);
 836
 837         x_delta = - (x1 +  horizontal_adjustment.get_value());
 838
 839         _master_group->move (x_delta, 0);
 840         timebar_group->move (x_delta, 0);
 841         time_line_group->move (x_delta, 0);
 842         cursor_group->move (x_delta, 0);
 843
 844         leftmost_frame = (nframes64_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
 845
 846         update_fixed_rulers ();
 847         redisplay_tempo (true);
 848
 849 #ifndef GTKOSX
 850         if (!autoscroll_active && !_stationary_playhead) {
 851                 /* force rulers and canvas to move in lock step */
 852                 while (gtk_events_pending ()) {
 853                         gtk_main_iteration ();
 854                 }
 855         }
 856 #endif
 857
 858 }
 859
 860 void
 861 Editor::scroll_canvas_vertically ()
 862 {
 863         /* vertical scrolling only */
 864
 865         double y_delta;
 866
 867         y_delta = last_trackview_group_vertical_offset - get_trackview_group_vertical_offset ();
 868         _trackview_group->move (0, y_delta);
 869         _background_group->move (0, y_delta);
 870
 871         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
 872                 (*i)->clip_to_viewport ();
 873         }
 874         last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
 875         /* required to keep the controls_layout in lock step with the canvas group */
 876         flush_canvas ();
 877 }
 878
 879 void
 880 Editor::color_handler()
 881 {
 882         playhead_cursor->canvas_item.property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_PlayHead.get();
 883         verbose_canvas_cursor->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_VerboseCanvasCursor.get();
 884
 885         meter_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MeterBar.get();
 886         meter_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 887
 888         tempo_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TempoBar.get();
 889         tempo_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 890
 891         marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBar.get();
 892         marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 893
 894         cd_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_CDMarkerBar.get();
 895         cd_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 896
 897         range_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeMarkerBar.get();
 898         range_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 899
 900         transport_marker_bar->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportMarkerBar.get();
 901         transport_marker_bar->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerBarSeparator.get();
 902
 903         cd_marker_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 904         cd_marker_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 905
 906         range_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 907         range_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragBarRect.get();
 908
 909         transport_bar_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 910         transport_bar_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportDragRect.get();
 911
 912         marker_drag_line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerDragLine.get();
 913
 914         range_marker_drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 915         range_marker_drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
 916
 917         transport_loop_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 918         transport_loop_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportLoopRect.get();
 919
 920         transport_punch_range_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 921         transport_punch_range_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TransportPunchRect.get();
 922
 923         transport_punchin_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 924         transport_punchout_line->property_color_rgba() = ARDOUR_UI::config()->canvasvar_PunchLine.get();
 925
 926         zoom_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 927         zoom_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_ZoomRect.get();
 928
 929         rubberband_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 930         rubberband_rect->property_fill_color_rgba() = (guint32) ARDOUR_UI::config()->canvasvar_RubberBandRect.get();
 931
 932         location_marker_color = ARDOUR_UI::config()->canvasvar_LocationMarker.get();
 933         location_range_color = ARDOUR_UI::config()->canvasvar_LocationRange.get();
 934         location_cd_marker_color = ARDOUR_UI::config()->canvasvar_LocationCDMarker.get();
 935         location_loop_color = ARDOUR_UI::config()->canvasvar_LocationLoop.get();
 936         location_punch_color = ARDOUR_UI::config()->canvasvar_LocationPunch.get();
 937
 938         refresh_location_display ();
 939 /*
 940         redisplay_tempo (true);
 941
 942         if (session)
 943                 session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks); // redraw metric markers
 944 */
 945 }
 946
 947 void
 948 Editor::flush_canvas ()
 949 {
 950         if (is_mapped()) {
 951
 952                 /* GnomeCanvas has a bug whereby if its idle handler is not scheduled between
 953                    two calls to update_now, an assert will trip.  This wrapper works around
 954                    that problem by only calling update_now if the assert will not trip.
 955
 956                    I think the GC bug is due to the fact that its code will reset need_update
 957                    and need_redraw to FALSE without checking to see if an idle handler is scheduled.
 958                    If one is scheduled, GC should probably remove it.
 959                 */
 960
 961                 GnomeCanvas* c = track_canvas->gobj ();
 962                 if (c->need_update || c->need_redraw) {
 963                         track_canvas->update_now ();
 964                 }
 965         }
 966 }
 967