X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=gtk2_ardour%2Fregion_view.cc;h=2edad1cd1612b21a00e6086273c50a1a2de1cb11;hb=56652276698f966134b27a29edda4d0bb8520c5a;hp=51ec00293164e563d4efd10756827c068d9965b1;hpb=73192bc1a7ea55fa1864dc3826845b15c00dd2ec;p=ardour.git diff --git a/gtk2_ardour/region_view.cc b/gtk2_ardour/region_view.cc index 51ec002931..2edad1cd16 100644 --- a/gtk2_ardour/region_view.cc +++ b/gtk2_ardour/region_view.cc @@ -24,27 +24,27 @@ #include #include -#include "pbd/stacktrace.h" #include "ardour/playlist.h" -#include "ardour/audioregion.h" -#include "ardour/audiosource.h" -#include "ardour/audio_diskstream.h" #include "ardour/session.h" +#include "canvas/polygon.h" +#include "canvas/debug.h" +#include "canvas/pixbuf.h" +#include "canvas/text.h" +#include "canvas/line.h" + #include "ardour_ui.h" #include "global_signals.h" #include "streamview.h" #include "region_view.h" #include "automation_region_view.h" #include "route_time_axis.h" -#include "simplerect.h" -#include "simpleline.h" -#include "waveview.h" #include "public_editor.h" #include "region_editor.h" #include "ghostregion.h" #include "route_time_axis.h" +#include "ui_config.h" #include "utils.h" #include "rgb_macros.h" #include "gui_thread.h" @@ -55,6 +55,7 @@ using namespace std; using namespace ARDOUR; using namespace PBD; using namespace Editing; +using namespace Gtk; using namespace ArdourCanvas; static const int32_t sync_mark_width = 9; @@ -80,15 +81,19 @@ RegionView::RegionView (ArdourCanvas::Group* parent, , _pixel_width(1.0) , in_destructor(false) , wait_for_data(false) - , _time_converter(r->session().tempo_map(), r->position()) + , _silence_text (0) + , _region_relative_time_converter(r->session().tempo_map(), r->position()) + , _source_relative_time_converter(r->session().tempo_map(), r->position() - r->start()) { - GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&RegionView::remove_ghost, this, _1), gui_context()); + GhostRegion::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&RegionView::remove_ghost, this, _1), gui_context()); } RegionView::RegionView (const RegionView& other) : sigc::trackable(other) , TimeAxisViewItem (other) - , _time_converter(other._time_converter) + , _silence_text (0) + , _region_relative_time_converter(other.region_relative_time_converter()) + , _source_relative_time_converter(other.source_relative_time_converter()) { /* derived concrete type will call init () */ @@ -97,13 +102,15 @@ RegionView::RegionView (const RegionView& other) valid = false; _pixel_width = other._pixel_width; - GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&RegionView::remove_ghost, this, _1), gui_context()); + GhostRegion::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&RegionView::remove_ghost, this, _1), gui_context()); } RegionView::RegionView (const RegionView& other, boost::shared_ptr other_region) : sigc::trackable(other) , TimeAxisViewItem (other) - , _time_converter(other._time_converter) + , _silence_text (0) + , _region_relative_time_converter(other_region->session().tempo_map(), other_region->position()) + , _source_relative_time_converter(other_region->session().tempo_map(), other_region->position() - other_region->start()) { /* this is a pseudo-copy constructor used when dragging regions around on the canvas. @@ -116,7 +123,7 @@ RegionView::RegionView (const RegionView& other, boost::shared_ptr other valid = false; _pixel_width = other._pixel_width; - GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&RegionView::remove_ghost, this, _1), gui_context()); + GhostRegion::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&RegionView::remove_ghost, this, _1), gui_context()); } RegionView::RegionView (ArdourCanvas::Group* parent, @@ -137,7 +144,9 @@ RegionView::RegionView (ArdourCanvas::Group* parent, , _pixel_width(1.0) , in_destructor(false) , wait_for_data(false) - , _time_converter(r->session().tempo_map(), r->position()) + , _silence_text (0) + , _region_relative_time_converter(r->session().tempo_map(), r->position()) + , _source_relative_time_converter(r->session().tempo_map(), r->position() - r->start()) { } @@ -157,26 +166,26 @@ RegionView::init (Gdk::Color const & basic_color, bool wfd) if (name_highlight) { name_highlight->set_data ("regionview", this); - name_highlight->signal_event().connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_region_view_name_highlight_event), name_highlight, this)); + name_highlight->Event.connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_region_view_name_highlight_event), name_highlight, this)); if (frame_handle_start) { frame_handle_start->set_data ("regionview", this); frame_handle_start->set_data ("isleft", (void*) 1); - frame_handle_start->signal_event().connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_frame_handle_event), frame_handle_start, this)); + frame_handle_start->Event.connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_frame_handle_event), frame_handle_start, this)); frame_handle_start->raise_to_top(); } if (frame_handle_end) { frame_handle_end->set_data ("regionview", this); frame_handle_end->set_data ("isleft", (void*) 0); - frame_handle_end->signal_event().connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_frame_handle_event), frame_handle_end, this)); + frame_handle_end->Event.connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_frame_handle_event), frame_handle_end, this)); frame_handle_end->raise_to_top(); } } - if (name_pixbuf) { - name_pixbuf->set_data ("regionview", this); - name_pixbuf->signal_event().connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_region_view_name_event), name_pixbuf, this)); + if (name_text) { + name_text->set_data ("regionview", this); + name_text->Event.connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_region_view_name_event), name_text, this)); } if (wfd) { @@ -185,9 +194,9 @@ RegionView::init (Gdk::Color const & basic_color, bool wfd) set_height (trackview.current_height()); - _region->PropertyChanged.connect (*this, invalidator (*this), ui_bind (&RegionView::region_changed, this, _1), gui_context()); - - group->signal_event().connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_region_view_event), group, this)); + _region->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&RegionView::region_changed, this, _1), gui_context()); + + group->Event.connect (sigc::bind (sigc::mem_fun (PublicEditor::instance(), &PublicEditor::canvas_region_view_event), group, this)); set_colors (); @@ -204,13 +213,137 @@ RegionView::~RegionView () delete *g; } - for (list::iterator i = _coverage_frames.begin (); i != _coverage_frames.end (); ++i) { + for (list::iterator i = _coverage_frames.begin (); i != _coverage_frames.end (); ++i) { delete *i; } + drop_silent_frames (); + delete editor; } +void +RegionView::set_silent_frames (const AudioIntervalResult& silences, double /*threshold*/) +{ + framecnt_t shortest = max_framecnt; + + /* remove old silent frames */ + drop_silent_frames (); + + if (silences.empty()) { + return; + } + + uint32_t const color = ARDOUR_UI::config()->canvasvar_Silence.get(); + + for (AudioIntervalResult::const_iterator i = silences.begin(); i != silences.end(); ++i) { + + ArdourCanvas::Rectangle* cr = new ArdourCanvas::Rectangle (group); + cr->set_ignore_events (true); + _silent_frames.push_back (cr); + + /* coordinates for the rect are relative to the regionview origin */ + + cr->set_x0 (trackview.editor().sample_to_pixel (i->first - _region->start())); + cr->set_x1 (trackview.editor().sample_to_pixel (i->second - _region->start())); + cr->set_y0 (1); + cr->set_y1 (_height - 2); + cr->set_outline (false); + cr->set_fill_color (color); + + shortest = min (shortest, i->second - i->first); + } + + /* Find shortest audible segment */ + framecnt_t shortest_audible = max_framecnt; + + framecnt_t s = _region->start(); + for (AudioIntervalResult::const_iterator i = silences.begin(); i != silences.end(); ++i) { + framecnt_t const dur = i->first - s; + if (dur > 0) { + shortest_audible = min (shortest_audible, dur); + } + + s = i->second; + } + + framecnt_t const dur = _region->start() + _region->length() - 1 - s; + if (dur > 0) { + shortest_audible = min (shortest_audible, dur); + } + + _silence_text = new ArdourCanvas::Text (group); + _silence_text->set_ignore_events (true); + _silence_text->set_font_description (get_font_for_style (N_("SilenceText"))); + _silence_text->set_color (ARDOUR_UI::config()->canvasvar_SilenceText.get()); + + /* both positions are relative to the region start offset in source */ + + _silence_text->set_x_position (trackview.editor().sample_to_pixel (silences.front().first - _region->start()) + 10.0); + _silence_text->set_y_position (20.0); + + double ms = (float) shortest/_region->session().frame_rate(); + + /* ms are now in seconds */ + + char const * sunits; + + if (ms >= 60.0) { + sunits = _("minutes"); + ms /= 60.0; + } else if (ms < 1.0) { + sunits = _("msecs"); + ms *= 1000.0; + } else { + sunits = _("secs"); + } + + string text = string_compose (ngettext ("%1 silent segment", "%1 silent segments", silences.size()), silences.size()) + + ", " + + string_compose (_("shortest = %1 %2"), ms, sunits); + + if (shortest_audible != max_framepos) { + /* ms are now in seconds */ + double ma = (float) shortest_audible / _region->session().frame_rate(); + char const * aunits; + + if (ma >= 60.0) { + aunits = _("minutes"); + ma /= 60.0; + } else if (ma < 1.0) { + aunits = _("msecs"); + ma *= 1000.0; + } else { + aunits = _("secs"); + } + + text += string_compose (_("\n (shortest audible segment = %1 %2)"), ma, aunits); + } + + _silence_text->set (text); +} + +void +RegionView::hide_silent_frames () +{ + for (list::iterator i = _silent_frames.begin (); i != _silent_frames.end (); ++i) { + (*i)->hide (); + } + _silence_text->hide(); +} + +void +RegionView::drop_silent_frames () +{ + for (list::iterator i = _silent_frames.begin (); i != _silent_frames.end (); ++i) { + delete *i; + } + _silent_frames.clear (); + + delete _silence_text; + _silence_text = 0; +} + gint RegionView::_lock_toggle (ArdourCanvas::Item*, GdkEvent* ev, void* arg) { @@ -255,6 +388,10 @@ RegionView::region_changed (const PropertyChange& what_changed) if (what_changed.contains (ARDOUR::Properties::locked)) { region_locked (); } + if (what_changed.contains (ARDOUR::Properties::locked)) { + /* name will show locked status */ + region_renamed (); + } } void @@ -271,7 +408,11 @@ RegionView::region_resized (const PropertyChange& what_changed) if (what_changed.contains (ARDOUR::Properties::position)) { set_position (_region->position(), 0); - _time_converter.set_origin_b (_region->position()); + _region_relative_time_converter.set_origin_b (_region->position()); + } + + if (what_changed.contains (ARDOUR::Properties::start) || what_changed.contains (ARDOUR::Properties::position)) { + _source_relative_time_converter.set_origin_b (_region->position() - _region->start()); } PropertyChange s_and_l; @@ -282,7 +423,7 @@ RegionView::region_resized (const PropertyChange& what_changed) set_duration (_region->length(), 0); - unit_length = _region->length() / samples_per_unit; + unit_length = _region->length() / samples_per_pixel; for (vector::iterator i = ghosts.begin(); i != ghosts.end(); ++i) { @@ -340,7 +481,7 @@ RegionView::set_position (framepos_t pos, void* /*src*/, double* ignored) if (delta) { for (vector::iterator i = ghosts.begin(); i != ghosts.end(); ++i) { - (*i)->group->move (delta, 0.0); + (*i)->group->move (ArdourCanvas::Duple (delta, 0.0)); } } @@ -348,13 +489,13 @@ RegionView::set_position (framepos_t pos, void* /*src*/, double* ignored) } void -RegionView::set_samples_per_unit (gdouble spu) +RegionView::set_samples_per_pixel (double fpp) { - TimeAxisViewItem::set_samples_per_unit (spu); + TimeAxisViewItem::set_samples_per_pixel (fpp); for (vector::iterator i = ghosts.begin(); i != ghosts.end(); ++i) { - (*i)->set_samples_per_unit (spu); - (*i)->set_duration (_region->length() / samples_per_unit); + (*i)->set_samples_per_pixel (fpp); + (*i)->set_duration (_region->length() / fpp); } region_sync_changed (); @@ -368,7 +509,7 @@ RegionView::set_duration (framecnt_t frames, void *src) } for (vector::iterator i = ghosts.begin(); i != ghosts.end(); ++i) { - (*i)->set_duration (_region->length() / samples_per_unit); + (*i)->set_duration (_region->length() / samples_per_pixel); } return true; @@ -380,8 +521,9 @@ RegionView::set_colors () TimeAxisViewItem::set_colors (); if (sync_mark) { - sync_mark->property_fill_color_rgba() = RGBA_TO_UINT(0,255,0,255); // fill_color; // FIXME make a themeable colour - sync_line->property_fill_color_rgba() = RGBA_TO_UINT(0,255,0,255); // fill_color; // FIXME make a themeable colour + /* XXX: make these colours themable */ + sync_mark->set_fill_color (RGBA_TO_UINT (0, 255, 0, 255)); + sync_line->set_outline_color (RGBA_TO_UINT (0, 255, 0, 255)); } } @@ -443,6 +585,10 @@ RegionView::make_name () const str += '{'; str += _region->name(); str += '}'; + } else if (_region->video_locked()) { + str += '['; + str += _region->name(); + str += ']'; } else { str = _region->name(); } @@ -485,15 +631,15 @@ RegionView::region_sync_changed () /* points set below */ - sync_mark = new ArdourCanvas::Polygon (*group); - sync_mark->property_fill_color_rgba() = RGBA_TO_UINT(0,255,0,255); // fill_color; // FIXME make a themeable colour + sync_mark = new ArdourCanvas::Polygon (group); + sync_mark->set_fill_color (RGBA_TO_UINT(0,255,0,255)); // FIXME make a themeable colour - sync_line = new ArdourCanvas::Line (*group); - sync_line->property_fill_color_rgba() = RGBA_TO_UINT(0,255,0,255); // fill_color; // FIXME make a themeable colour - sync_line->property_width_pixels() = 1; + sync_line = new ArdourCanvas::Line (group); + sync_line->set_outline_color (RGBA_TO_UINT(0,255,0,255)); // FIXME make a themeable colour + sync_line->set_outline_width (1); } - /* this has to handle both a genuine change of position, a change of samples_per_unit, + /* this has to handle both a genuine change of position, a change of samples_per_pixel and a change in the bounds of the _region-> */ @@ -521,19 +667,15 @@ RegionView::region_sync_changed () //points = sync_mark->property_points().get_value(); - double offset = sync_offset / samples_per_unit; - points.push_back (Gnome::Art::Point (offset - ((sync_mark_width-1)/2), 1)); - points.push_back (Gnome::Art::Point (offset + ((sync_mark_width-1)/2), 1)); - points.push_back (Gnome::Art::Point (offset, sync_mark_width - 1)); - points.push_back (Gnome::Art::Point (offset - ((sync_mark_width-1)/2), 1)); - sync_mark->property_points().set_value (points); + double offset = sync_offset / samples_per_pixel; + points.push_back (ArdourCanvas::Duple (offset - ((sync_mark_width-1)/2), 1)); + points.push_back (ArdourCanvas::Duple (offset + ((sync_mark_width-1)/2), 1)); + points.push_back (ArdourCanvas::Duple (offset, sync_mark_width - 1)); + points.push_back (ArdourCanvas::Duple (offset - ((sync_mark_width-1)/2), 1)); + sync_mark->set (points); sync_mark->show (); - points.clear (); - points.push_back (Gnome::Art::Point (offset, 0)); - points.push_back (Gnome::Art::Point (offset, trackview.current_height() - NAME_HIGHLIGHT_SIZE)); - - sync_line->property_points().set_value (points); + sync_line->set (ArdourCanvas::Duple (offset, 0), ArdourCanvas::Duple (offset, trackview.current_height() - NAME_HIGHLIGHT_SIZE)); sync_line->show (); } } @@ -546,12 +688,12 @@ RegionView::move (double x_delta, double y_delta) return; } - get_canvas_group()->move (x_delta, y_delta); + get_canvas_group()->move (ArdourCanvas::Duple (x_delta, y_delta)); /* note: ghosts never leave their tracks so y_delta for them is always zero */ for (vector::iterator i = ghosts.begin(); i != ghosts.end(); ++i) { - (*i)->group->move (x_delta, 0.0); + (*i)->group->move (ArdourCanvas::Duple (x_delta, 0.0)); } } @@ -597,16 +739,22 @@ RegionView::set_height (double h) int sync_dir; framecnt_t sync_offset; sync_offset = _region->sync_offset (sync_dir); - double offset = sync_offset / samples_per_unit; + double offset = sync_offset / samples_per_pixel; + + sync_line->set ( + ArdourCanvas::Duple (offset, 0), + ArdourCanvas::Duple (offset, h - NAME_HIGHLIGHT_SIZE) + ); + } - points.push_back (Gnome::Art::Point (offset, 0)); - points.push_back (Gnome::Art::Point (offset, h - NAME_HIGHLIGHT_SIZE)); - sync_line->property_points().set_value (points); + for (list::iterator i = _coverage_frames.begin(); i != _coverage_frames.end(); ++i) { + (*i)->set_y1 (h + 1); } - for (list::iterator i = _coverage_frames.begin(); i != _coverage_frames.end(); ++i) { - (*i)->property_y2() = h + 1; + for (list::iterator i = _silent_frames.begin(); i != _silent_frames.end(); ++i) { + (*i)->set_y1 (h + 1); } + } /** Remove old coverage frames and make new ones, if we're in a LayerDisplay mode @@ -615,7 +763,7 @@ void RegionView::update_coverage_frames (LayerDisplay d) { /* remove old coverage frames */ - for (list::iterator i = _coverage_frames.begin (); i != _coverage_frames.end (); ++i) { + for (list::iterator i = _coverage_frames.begin (); i != _coverage_frames.end (); ++i) { delete *i; } @@ -635,11 +783,11 @@ RegionView::update_coverage_frames (LayerDisplay d) framepos_t t = position; framepos_t const end = _region->last_frame (); - ArdourCanvas::SimpleRect* cr = 0; + ArdourCanvas::Rectangle* cr = 0; bool me = false; - uint32_t const color = frame->property_fill_color_rgba (); - uint32_t const base_alpha = UINT_RGBA_A (color); + /* the color that will be used to show parts of regions that will not be heard */ + uint32_t const non_playing_color = ARDOUR_UI::config()->canvasvar_CoveredRegion.get (); while (t < end) { @@ -650,23 +798,23 @@ RegionView::update_coverage_frames (LayerDisplay d) /* finish off any old rect, if required */ if (cr && me != new_me) { - cr->property_x2() = trackview.editor().frame_to_pixel (t - position); + cr->set_x1 (trackview.editor().sample_to_pixel (t - position)); } /* start off any new rect, if required */ if (cr == 0 || me != new_me) { - cr = new ArdourCanvas::SimpleRect (*group); + cr = new ArdourCanvas::Rectangle (group); _coverage_frames.push_back (cr); - cr->property_x1() = trackview.editor().frame_to_pixel (t - position); - cr->property_y1() = 1; - cr->property_y2() = _height + 1; - cr->property_outline_pixels() = 0; - /* areas that will be played get a lower alpha */ - uint32_t alpha = base_alpha; + cr->set_x0 (trackview.editor().sample_to_pixel (t - position)); + cr->set_y0 (1); + cr->set_y1 (_height + 1); + cr->set_outline (false); + cr->set_ignore_events (true); if (new_me) { - alpha /= 2; + cr->set_fill_color (UINT_RGBA_CHANGE_A (non_playing_color, 0)); + } else { + cr->set_fill_color (non_playing_color); } - cr->property_fill_color_rgba () = UINT_RGBA_CHANGE_A (color, alpha); } t = pl->find_next_region_boundary (t, 1); @@ -675,7 +823,7 @@ RegionView::update_coverage_frames (LayerDisplay d) if (cr) { /* finish off the last rectangle */ - cr->property_x2() = trackview.editor().frame_to_pixel (end - position); + cr->set_x1 (trackview.editor().sample_to_pixel (end - position)); } if (frame_handle_start) { @@ -690,16 +838,16 @@ RegionView::update_coverage_frames (LayerDisplay d) name_highlight->raise_to_top (); } - if (name_pixbuf) { - name_pixbuf->raise_to_top (); + if (name_text) { + name_text->raise_to_top (); } } -void -RegionView::trim_start (framepos_t new_bound, bool no_overlap) +bool +RegionView::trim_front (framepos_t new_bound, bool no_overlap) { if (_region->locked()) { - return; + return false; } RouteTimeAxisView& rtv = dynamic_cast (trackview); @@ -707,7 +855,7 @@ RegionView::trim_start (framepos_t new_bound, bool no_overlap) framepos_t const pre_trim_first_frame = _region->first_frame(); - _region->trim_front ((framepos_t) (new_bound * speed), this); + _region->trim_front ((framepos_t) (new_bound * speed)); if (no_overlap) { // Get the next region on the left of this region and shrink/expand it. @@ -722,18 +870,20 @@ RegionView::trim_start (framepos_t new_bound, bool no_overlap) // Only trim region on the left if the first frame has gone beyond the left region's last frame. if (region_left != 0 && (region_left->last_frame() > _region->first_frame() || regions_touching)) { - region_left->trim_end (_region->first_frame() - 1, this); + region_left->trim_end (_region->first_frame() - 1); } } region_changed (ARDOUR::bounds_change); + + return (pre_trim_first_frame != _region->first_frame()); //return true if we actually changed something } -void +bool RegionView::trim_end (framepos_t new_bound, bool no_overlap) { if (_region->locked()) { - return; + return false; } RouteTimeAxisView& rtv = dynamic_cast (trackview); @@ -741,7 +891,7 @@ RegionView::trim_end (framepos_t new_bound, bool no_overlap) framepos_t const pre_trim_last_frame = _region->last_frame(); - _region->trim_end ((framepos_t) (new_bound * speed), this); + _region->trim_end ((framepos_t) (new_bound * speed)); if (no_overlap) { // Get the next region on the right of this region and shrink/expand it. @@ -756,14 +906,16 @@ RegionView::trim_end (framepos_t new_bound, bool no_overlap) // Only trim region on the right if the last frame has gone beyond the right region's first frame. if (region_right != 0 && (region_right->first_frame() < _region->last_frame() || regions_touching)) { - region_right->trim_front (_region->last_frame() + 1, this); + region_right->trim_front (_region->last_frame() + 1); } region_changed (ARDOUR::bounds_change); - + } else { region_changed (PropertyChange (ARDOUR::Properties::length)); } + + return (pre_trim_last_frame != _region->last_frame()); //return true if we actually changed something } @@ -804,6 +956,32 @@ RegionView::trim_contents (framepos_t frame_delta, bool left_direction, bool swa } } - _region->trim_start ((framepos_t) (new_bound * speed), this); + _region->trim_start ((framepos_t) (new_bound * speed)); region_changed (PropertyChange (ARDOUR::Properties::start)); } + +/** Snap a frame offset within our region using the current snap settings. + * @param x Frame offset from this region's position. + * @return Snapped frame offset from this region's position. + */ +frameoffset_t +RegionView::snap_frame_to_frame (frameoffset_t x) const +{ + PublicEditor& editor = trackview.editor(); + + /* x is region relative, convert it to global absolute frames */ + framepos_t const session_frame = x + _region->position(); + + /* try a snap in either direction */ + framepos_t frame = session_frame; + editor.snap_to (frame, 0); + + /* if we went off the beginning of the region, snap forwards */ + if (frame < _region->position ()) { + frame = session_frame; + editor.snap_to (frame, 1); + } + + /* back to region relative */ + return frame - _region->position(); +}