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livetrax/gtk2_ardour/mergeable_line.cc

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/*
* Copyright (C) 2023 Paul Davis <paul@linuxaudiosystems.com>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <algorithm>
#include "ardour/session.h"
#include "automation_line.h"
#include "editor.h"
#include "mergeable_line.h"
#include "route_time_axis.h"
#include "selectable.h"
#include "ui_config.h"
#include "pbd/i18n.h"
using namespace ARDOUR;
void
MergeableLine::merge_drawn_line (Editor& e, Session& s, Evoral::ControlList::OrderedPoints& points, bool thin)
{
if (points.empty()) {
return;
}
if (!_line) {
return;
}
std::shared_ptr<AutomationList> list = _line->the_list ();
if (list->in_write_pass()) {
/* do not allow the GUI to add automation events during an
automation write pass.
*/
return;
}
XMLNode& before = list->get_state();
std::list<Selectable*> results;
/* If necessary convert all point times. This is necessary
for region-based automation data, because the time values for the
points drawn are in absolute time, but the ControlList expects data
in source-reference time.
*/
if (time_filter) {
for (auto & p : points) {
p.when = time_filter (p.when);
}
}
Temporal::timepos_t earliest = points.front().when;
Temporal::timepos_t latest = points.back().when;
if (earliest > latest) {
std::swap (earliest, latest);
}
/* Convert each point's "value" from geometric coordinate space to
* value space for the control
*/
for (auto & dp : points) {
/* compute vertical fractional position */
dp.value = 1.0 - (dp.value / _line->height());
/* map using line */
_line->view_to_model_coord_y (dp.value);
}
list->freeze ();
list->editor_add_ordered (points, false);
if (thin) {
list->thin (Config->get_automation_thinning_factor());
}
list->thaw ();
if (automation_state_callback && _control && _control->automation_state () == ARDOUR::Off) {
automation_state_callback (ARDOUR::Play);
}
if (control_touched_callback && UIConfiguration::instance().get_automation_edit_cancels_auto_hide () && _control == s.recently_touched_controllable ()) {
control_touched_callback ();
}
XMLNode& after = list->get_state();
e.begin_reversible_command (_("draw automation"));
s.add_command (new MementoCommand<ARDOUR::AutomationList> (*list.get (), &before, &after));
_line->get_selectables (earliest, latest, 0.0, 1.0, results);
e.get_selection ().set (results);
e.commit_reversible_command ();
s.set_dirty ();
}