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livetrax/gtk2_ardour/automation_region_view.cc
David Robillard 073a94350b Fix crash on dragging a region with a visible automation region that has no line.
git-svn-id: svn://localhost/ardour2/branches/3.0@3780 d708f5d6-7413-0410-9779-e7cbd77b26cf
2008-09-21 16:35:55 +00:00

180 lines
4.7 KiB
C++

/*
Copyright (C) 2007 Paul Davis
Author: Dave Robillard
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 <pbd/memento_command.h>
#include "automation_region_view.h"
#include "public_editor.h"
#include "i18n.h"
AutomationRegionView::AutomationRegionView(ArdourCanvas::Group* parent,
AutomationTimeAxisView& time_axis,
boost::shared_ptr<ARDOUR::Region> region,
const ARDOUR::Parameter& param,
boost::shared_ptr<ARDOUR::AutomationList> list,
double spu,
Gdk::Color& basic_color)
: RegionView(parent, time_axis, region, spu, basic_color)
, _parameter(param)
{
if (list) {
assert(list->parameter() == param);
create_line(list);
}
group->signal_event().connect (mem_fun (this, &AutomationRegionView::canvas_event), false);
}
void
AutomationRegionView::init (Gdk::Color& basic_color, bool wfd)
{
_enable_display = false;
RegionView::init(basic_color, false);
compute_colors (basic_color);
reset_width_dependent_items ((double) _region->length() / samples_per_unit);
set_height (trackview.current_height());
_region->StateChanged.connect (mem_fun(*this, &AutomationRegionView::region_changed));
set_colors ();
_enable_display = true;
}
void
AutomationRegionView::create_line (boost::shared_ptr<ARDOUR::AutomationList> list)
{
_line = boost::shared_ptr<AutomationLine>(new AutomationLine(
list->parameter().symbol(), trackview, *get_canvas_group(), list));
_line->set_colors();
_line->show();
_line->show_all_control_points();
_line->set_height ((uint32_t)rint(trackview.current_height() - NAME_HIGHLIGHT_SIZE));
}
bool
AutomationRegionView::canvas_event(GdkEvent* ev)
{
if (ev->type == GDK_BUTTON_RELEASE) {
const nframes_t when = trackview.editor.pixel_to_frame((nframes_t)ev->button.x)
- _region->position();
add_automation_event(ev, when, ev->button.y);
}
return false;
}
void
AutomationRegionView::add_automation_event (GdkEvent* event, nframes_t when, double y)
{
if (!_line) {
boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
boost::shared_ptr<ARDOUR::AutomationControl> ac
= boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
assert(ac);
create_line(ac->alist());
}
assert(_line);
double x = 0;
AutomationTimeAxisView* const view = automation_view();
view->canvas_display->w2i (x, y);
/* compute vertical fractional position */
const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
y = 1.0 - (y / h);
/* map using line */
_line->view_to_model_y (y);
view->session().begin_reversible_command (_("add automation event"));
XMLNode& before = _line->the_list()->get_state();
_line->the_list()->add (when, y);
XMLNode& after = _line->the_list()->get_state();
view->session().commit_reversible_command (new MementoCommand<ARDOUR::AutomationList>(
*_line->the_list(), &before, &after));
view->session().set_dirty ();
}
void
AutomationRegionView::set_height (double h)
{
RegionView::set_height(h);
if (_line)
_line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
}
bool
AutomationRegionView::set_position (nframes_t pos, void* src, double* ignored)
{
// Do nothing, region parent will move us
//return false;
return RegionView::set_position(pos, src, ignored); // FIXME: eventually...
}
void
AutomationRegionView::reset_width_dependent_items (double pixel_width)
{
RegionView::reset_width_dependent_items(pixel_width);
if (_line)
_line->reset();
}
void
AutomationRegionView::region_resized (ARDOUR::Change what_changed)
{
RegionView::region_resized(what_changed);
if (_line)
_line->reset();
}
void
AutomationRegionView::entered()
{
if (_line)
_line->track_entered();
}
void
AutomationRegionView::exited()
{
if (_line)
_line->track_exited();
}