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livetrax/gtk2_ardour/region_view.cc
David Robillard 589cc3162b Fix crash when deleting overlapped regions.
Use RegionSelection for MIDI regions as well, since the old dumb stub didn't do
some things correctly.  There's probably no reason to have a separate class for
this at all, and some good ones for putting all regions in the same selection,
so we should probably do that.  For now they are still separate in the
selection but use the same base class.
2014-11-13 21:32:08 -05:00

976 lines
25 KiB
C++

/*
Copyright (C) 2001-2006 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <cmath>
#include <cassert>
#include <algorithm>
#include <gtkmm.h>
#include <gtkmm2ext/gtk_ui.h>
#include "ardour/playlist.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 "canvas/utils.h"
#include "canvas/colors.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 "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"
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace ARDOUR_UI_UTILS;
using namespace PBD;
using namespace Editing;
using namespace Gtk;
using namespace ArdourCanvas;
static const int32_t sync_mark_width = 9;
PBD::Signal1<void,RegionView*> RegionView::RegionViewGoingAway;
RegionView::RegionView (ArdourCanvas::Container* parent,
TimeAxisView& tv,
boost::shared_ptr<ARDOUR::Region> r,
double spu,
uint32_t basic_color,
bool automation)
: TimeAxisViewItem (r->name(), *parent, tv, spu, basic_color, r->position(), r->length(), false, automation,
(automation ? TimeAxisViewItem::ShowFrame :
TimeAxisViewItem::Visibility (TimeAxisViewItem::ShowNameText|
TimeAxisViewItem::ShowNameHighlight| TimeAxisViewItem::ShowFrame)))
, _region (r)
, sync_mark(0)
, sync_line(0)
, editor(0)
, current_visible_sync_position(0.0)
, valid(false)
, _enable_display(false)
, _pixel_width(1.0)
, in_destructor(false)
, wait_for_data(false)
, _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), boost::bind (&RegionView::remove_ghost, this, _1), gui_context());
}
RegionView::RegionView (const RegionView& other)
: sigc::trackable(other)
, TimeAxisViewItem (other)
, _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 () */
_region = other._region;
current_visible_sync_position = other.current_visible_sync_position;
valid = false;
_pixel_width = other._pixel_width;
GhostRegion::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&RegionView::remove_ghost, this, _1), gui_context());
}
RegionView::RegionView (const RegionView& other, boost::shared_ptr<Region> other_region)
: sigc::trackable(other)
, TimeAxisViewItem (other)
, _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.
*/
/* derived concrete type will call init () */
_region = other_region;
current_visible_sync_position = other.current_visible_sync_position;
valid = false;
_pixel_width = other._pixel_width;
GhostRegion::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&RegionView::remove_ghost, this, _1), gui_context());
}
RegionView::RegionView (ArdourCanvas::Container* parent,
TimeAxisView& tv,
boost::shared_ptr<ARDOUR::Region> r,
double spu,
uint32_t basic_color,
bool recording,
TimeAxisViewItem::Visibility visibility)
: TimeAxisViewItem (r->name(), *parent, tv, spu, basic_color, r->position(), r->length(), recording, false, visibility)
, _region (r)
, sync_mark(0)
, sync_line(0)
, editor(0)
, current_visible_sync_position(0.0)
, valid(false)
, _enable_display(false)
, _pixel_width(1.0)
, in_destructor(false)
, wait_for_data(false)
, _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())
{
}
void
RegionView::init (bool wfd)
{
editor = 0;
valid = true;
in_destructor = false;
wait_for_data = wfd;
sync_mark = 0;
sync_line = 0;
sync_mark = 0;
sync_line = 0;
if (name_highlight) {
name_highlight->set_data ("regionview", 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->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->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_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) {
_enable_display = true;
}
set_height (trackview.current_height());
_region->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&RegionView::region_changed, this, _1), gui_context());
set_colors ();
ColorsChanged.connect (sigc::mem_fun (*this, &RegionView::color_handler));
/* XXX sync mark drag? */
}
RegionView::~RegionView ()
{
in_destructor = true;
for (vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
delete *g;
}
for (list<ArdourCanvas::Rectangle*>::iterator i = _coverage_frames.begin (); i != _coverage_frames.end (); ++i) {
delete *i;
}
drop_silent_frames ();
delete editor;
}
bool
RegionView::canvas_group_event (GdkEvent* event)
{
if (!in_destructor) {
return trackview.editor().canvas_region_view_event (event, group, this);
}
}
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()->get_Silence();
for (AudioIntervalResult::const_iterator i = silences.begin(); i != silences.end(); ++i) {
ArdourCanvas::Rectangle* cr = new ArdourCanvas::TimeRectangle (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()->get_SilenceText());
/* 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<ArdourCanvas::Rectangle*>::iterator i = _silent_frames.begin (); i != _silent_frames.end (); ++i) {
(*i)->hide ();
}
_silence_text->hide();
}
void
RegionView::drop_silent_frames ()
{
for (list<ArdourCanvas::Rectangle*>::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)
{
switch (ev->type) {
case GDK_BUTTON_RELEASE:
static_cast<RegionView*>(arg)->lock_toggle ();
return TRUE;
break;
default:
break;
}
return FALSE;
}
void
RegionView::lock_toggle ()
{
_region->set_locked (!_region->locked());
}
void
RegionView::region_changed (const PropertyChange& what_changed)
{
ENSURE_GUI_THREAD (*this, &RegionView::region_changed, what_changed);
if (what_changed.contains (ARDOUR::bounds_change)) {
region_resized (what_changed);
region_sync_changed ();
}
if (what_changed.contains (ARDOUR::Properties::muted)) {
region_muted ();
}
if (what_changed.contains (ARDOUR::Properties::opaque)) {
region_opacity ();
}
if (what_changed.contains (ARDOUR::Properties::name)) {
region_renamed ();
}
if (what_changed.contains (ARDOUR::Properties::sync_position)) {
region_sync_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
RegionView::region_locked ()
{
/* name will show locked status */
region_renamed ();
}
void
RegionView::region_resized (const PropertyChange& what_changed)
{
double unit_length;
if (what_changed.contains (ARDOUR::Properties::position)) {
set_position (_region->position(), 0);
_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;
s_and_l.add (ARDOUR::Properties::start);
s_and_l.add (ARDOUR::Properties::length);
if (what_changed.contains (s_and_l)) {
set_duration (_region->length(), 0);
unit_length = _region->length() / samples_per_pixel;
for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
(*i)->set_duration (unit_length);
}
}
}
void
RegionView::reset_width_dependent_items (double pixel_width)
{
TimeAxisViewItem::reset_width_dependent_items (pixel_width);
_pixel_width = pixel_width;
}
void
RegionView::region_muted ()
{
set_frame_color ();
region_renamed ();
}
void
RegionView::region_opacity ()
{
set_frame_color ();
}
void
RegionView::raise_to_top ()
{
_region->raise_to_top ();
}
void
RegionView::lower_to_bottom ()
{
_region->lower_to_bottom ();
}
bool
RegionView::set_position (framepos_t pos, void* /*src*/, double* ignored)
{
double delta;
bool ret;
if (!(ret = TimeAxisViewItem::set_position (pos, this, &delta))) {
return false;
}
if (ignored) {
*ignored = delta;
}
if (delta) {
for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
(*i)->group->move (ArdourCanvas::Duple (delta, 0.0));
}
}
return ret;
}
void
RegionView::set_samples_per_pixel (double fpp)
{
TimeAxisViewItem::set_samples_per_pixel (fpp);
for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
(*i)->set_samples_per_pixel (fpp);
(*i)->set_duration (_region->length() / fpp);
}
region_sync_changed ();
}
bool
RegionView::set_duration (framecnt_t frames, void *src)
{
if (!TimeAxisViewItem::set_duration (frames, src)) {
return false;
}
for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
(*i)->set_duration (_region->length() / samples_per_pixel);
}
return true;
}
uint32_t
RegionView::fill_opacity () const
{
if (!_region->opaque()) {
return 60;
}
uint32_t normal_tavi_opacity = TimeAxisViewItem::fill_opacity ();
return normal_tavi_opacity;
}
void
RegionView::set_colors ()
{
TimeAxisViewItem::set_colors ();
if (sync_mark) {
/* XXX: make these colours themable */
sync_mark->set_fill_color (ArdourCanvas::rgba_to_color (0, 1.0, 0, 1.0));
sync_line->set_outline_color (ArdourCanvas::rgba_to_color (0, 1.0, 0, 1.0));
}
}
void
RegionView::set_frame_color ()
{
TimeAxisViewItem::set_frame_color ();
}
void
RegionView::show_region_editor ()
{
if (editor == 0) {
editor = new RegionEditor (trackview.session(), region());
}
editor->present ();
editor->show_all();
}
void
RegionView::hide_region_editor()
{
if (editor) {
editor->hide_all ();
}
}
std::string
RegionView::make_name () const
{
std::string str;
// XXX nice to have some good icons for this
if (_region->locked()) {
str += '>';
str += _region->name();
str += '<';
} else if (_region->position_locked()) {
str += '{';
str += _region->name();
str += '}';
} else if (_region->video_locked()) {
str += '[';
str += _region->name();
str += ']';
} else {
str = _region->name();
}
if (_region->muted()) {
str = string ("!") + str;
}
return str;
}
void
RegionView::region_renamed ()
{
std::string str = make_name ();
set_item_name (str, this);
set_name_text (str);
reset_width_dependent_items (_pixel_width);
}
void
RegionView::region_sync_changed ()
{
int sync_dir;
framecnt_t sync_offset;
sync_offset = _region->sync_offset (sync_dir);
if (sync_offset == 0) {
/* no need for a sync mark */
if (sync_mark) {
sync_mark->hide();
sync_line->hide ();
}
return;
}
if (!sync_mark) {
/* points set below */
sync_mark = new ArdourCanvas::Polygon (group);
CANVAS_DEBUG_NAME (sync_mark, string_compose ("sync mark for %1", get_item_name()));
sync_mark->set_fill_color (ArdourCanvas::rgba_to_color (0, 1.0, 0, 1.0)); // FIXME make a themeable colour
sync_line = new ArdourCanvas::Line (group);
CANVAS_DEBUG_NAME (sync_line, string_compose ("sync mark for %1", get_item_name()));
sync_line->set_outline_color (ArdourCanvas::rgba_to_color (0, 1.0, 0, 1.0)); // FIXME make a themeable colour
}
/* 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->
*/
if (sync_offset == 0) {
/* no sync mark - its the start of the region */
sync_mark->hide();
sync_line->hide ();
} else {
if ((sync_dir < 0) || ((sync_dir > 0) && (sync_offset > _region->length()))) {
/* no sync mark - its out of the bounds of the region */
sync_mark->hide();
sync_line->hide ();
} else {
/* lets do it */
Points points;
//points = sync_mark->property_points().get_value();
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 ();
sync_line->set (ArdourCanvas::Duple (offset, 0), ArdourCanvas::Duple (offset, trackview.current_height() - NAME_HIGHLIGHT_SIZE));
sync_line->show ();
}
}
}
void
RegionView::move (double x_delta, double y_delta)
{
if (!_region->can_move() || (x_delta == 0 && y_delta == 0)) {
return;
}
/* items will not prevent Item::move() moving
* them to a negative x-axis coordinate, which
* is legal, but we don't want that here.
*/
ArdourCanvas::Item *item = get_canvas_group ();
if (item->position().x + x_delta < 0) {
x_delta = -item->position().x; /* move it to zero */
}
item->move (ArdourCanvas::Duple (x_delta, y_delta));
/* note: ghosts never leave their tracks so y_delta for them is always zero */
for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
(*i)->group->move (ArdourCanvas::Duple (x_delta, 0.0));
}
}
void
RegionView::remove_ghost_in (TimeAxisView& tv)
{
for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
if (&(*i)->trackview == &tv) {
delete *i;
break;
}
}
}
void
RegionView::remove_ghost (GhostRegion* ghost)
{
if (in_destructor) {
return;
}
for (vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
if (*i == ghost) {
ghosts.erase (i);
break;
}
}
}
void
RegionView::set_height (double h)
{
TimeAxisViewItem::set_height(h);
if (sync_line) {
Points points;
int sync_dir;
framecnt_t sync_offset;
sync_offset = _region->sync_offset (sync_dir);
double offset = sync_offset / samples_per_pixel;
sync_line->set (
ArdourCanvas::Duple (offset, 0),
ArdourCanvas::Duple (offset, h - NAME_HIGHLIGHT_SIZE)
);
}
for (list<ArdourCanvas::Rectangle*>::iterator i = _coverage_frames.begin(); i != _coverage_frames.end(); ++i) {
(*i)->set_y1 (h + 1);
}
for (list<ArdourCanvas::Rectangle*>::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
* which uses them. */
void
RegionView::update_coverage_frames (LayerDisplay d)
{
/* remove old coverage frames */
for (list<ArdourCanvas::Rectangle*>::iterator i = _coverage_frames.begin (); i != _coverage_frames.end (); ++i) {
delete *i;
}
_coverage_frames.clear ();
if (d != Stacked) {
/* don't do coverage frames unless we're in stacked mode */
return;
}
boost::shared_ptr<Playlist> pl (_region->playlist ());
if (!pl) {
return;
}
framepos_t const position = _region->first_frame ();
framepos_t t = position;
framepos_t const end = _region->last_frame ();
ArdourCanvas::Rectangle* cr = 0;
bool me = false;
/* 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()->get_CoveredRegion ();
while (t < end) {
t++;
/* is this region is on top at time t? */
bool const new_me = (pl->top_unmuted_region_at (t) == _region);
/* finish off any old rect, if required */
if (cr && me != new_me) {
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::TimeRectangle (group);
_coverage_frames.push_back (cr);
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) {
cr->set_fill_color (UINT_RGBA_CHANGE_A (non_playing_color, 0));
} else {
cr->set_fill_color (non_playing_color);
}
}
t = pl->find_next_region_boundary (t, 1);
me = new_me;
}
if (cr) {
/* finish off the last rectangle */
cr->set_x1 (trackview.editor().sample_to_pixel (end - position));
}
if (frame_handle_start) {
frame_handle_start->raise_to_top ();
}
if (frame_handle_end) {
frame_handle_end->raise_to_top ();
}
if (name_highlight) {
name_highlight->raise_to_top ();
}
if (name_text) {
name_text->raise_to_top ();
}
}
bool
RegionView::trim_front (framepos_t new_bound, bool no_overlap)
{
if (_region->locked()) {
return false;
}
RouteTimeAxisView& rtv = dynamic_cast<RouteTimeAxisView&> (trackview);
double const speed = rtv.track()->speed ();
framepos_t const pre_trim_first_frame = _region->first_frame();
_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.
boost::shared_ptr<Playlist> playlist (_region->playlist());
boost::shared_ptr<Region> region_left = playlist->find_next_region (pre_trim_first_frame, End, 0);
bool regions_touching = false;
if (region_left != 0 && (pre_trim_first_frame == region_left->last_frame() + 1)) {
regions_touching = true;
}
// 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);
}
}
region_changed (ARDOUR::bounds_change);
return (pre_trim_first_frame != _region->first_frame()); //return true if we actually changed something
}
bool
RegionView::trim_end (framepos_t new_bound, bool no_overlap)
{
if (_region->locked()) {
return false;
}
RouteTimeAxisView& rtv = dynamic_cast<RouteTimeAxisView&> (trackview);
double const speed = rtv.track()->speed ();
framepos_t const pre_trim_last_frame = _region->last_frame();
_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.
boost::shared_ptr<Playlist> playlist (_region->playlist());
boost::shared_ptr<Region> region_right = playlist->find_next_region (pre_trim_last_frame, Start, 1);
bool regions_touching = false;
if (region_right != 0 && (pre_trim_last_frame == region_right->first_frame() - 1)) {
regions_touching = true;
}
// 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);
}
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
}
void
RegionView::thaw_after_trim ()
{
if (_region->locked()) {
return;
}
_region->resume_property_changes ();
}
void
RegionView::move_contents (frameoffset_t distance)
{
if (_region->locked()) {
return;
}
_region->move_start (distance);
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();
}