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livetrax/gtk2_ardour/automation_region_view.cc

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/*
Copyright (C) 2007 Paul Davis
Author: David 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 "ardour/automation_control.h"
#include "ardour/event_type_map.h"
#include "ardour/session.h"
#include "ardour/source.h"
#include "ardour/midi_automation_list_binder.h"
#include "ardour/midi_region.h"
#include "automation_region_view.h"
#include "gui_thread.h"
#include "public_editor.h"
#include "midi_automation_line.h"
#include "editor_drag.h"
#include "editor.h"
#include "editing.h"
#include "i18n.h"
AutomationRegionView::AutomationRegionView (ArdourCanvas::Group* parent,
AutomationTimeAxisView& time_axis,
boost::shared_ptr<ARDOUR::Region> region,
const Evoral::Parameter& param,
boost::shared_ptr<ARDOUR::AutomationList> list,
double spu,
Gdk::Color const & basic_color)
: RegionView(parent, time_axis, region, spu, basic_color, true)
, _parameter(param)
{
if (list) {
assert(list->parameter() == param);
create_line(list);
}
group->signal_event().connect (sigc::mem_fun (this, &AutomationRegionView::canvas_event), false);
group->raise_to_top();
}
void
AutomationRegionView::init (Gdk::Color const & 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());
set_colors ();
_enable_display = true;
}
void
AutomationRegionView::create_line (boost::shared_ptr<ARDOUR::AutomationList> list)
{
_line = boost::shared_ptr<AutomationLine> (new MidiAutomationLine(
ARDOUR::EventTypeMap::instance().to_symbol(list->parameter()),
trackview, *get_canvas_group(), list,
boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region),
_parameter,
&_time_converter));
_line->set_colors();
_line->set_height ((uint32_t)rint(trackview.current_height() - NAME_HIGHLIGHT_SIZE));
_line->show();
_line->show_all_control_points();
_line->set_maximum_time (_region->length());
_line->set_offset (_region->start ());
}
bool
AutomationRegionView::canvas_event (GdkEvent* ev)
{
PublicEditor& e = trackview.editor ();
if (ev->type == GDK_BUTTON_PRESS && e.current_mouse_mode() == Editing::MouseObject) {
/* XXX: icky dcast to Editor */
e.drags()->set (new RubberbandSelectDrag (dynamic_cast<Editor*> (&e), group), ev);
} else if (ev->type == GDK_BUTTON_RELEASE) {
if (trackview.editor().drags()->active() && trackview.editor().drags()->end_grab (ev)) {
return true;
}
double x = ev->button.x;
double y = ev->button.y;
/* convert to item coordinates in the time axis view */
automation_view()->canvas_display()->w2i (x, y);
/* clamp y */
y = max (y, 0.0);
y = min (y, _height - NAME_HIGHLIGHT_SIZE);
add_automation_event (ev, trackview.editor().pixel_to_frame (x) - _region->position(), y);
}
return false;
}
/** @param when Position in frames, where 0 is the start of the region.
* @param y y position, relative to our TimeAxisView.
*/
void
AutomationRegionView::add_automation_event (GdkEvent *, framepos_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);
AutomationTimeAxisView* const view = automation_view ();
/* compute vertical fractional position */
const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
y = 1.0 - (y / h);
/* map using line */
double when_d = when;
_line->view_to_model_coord (when_d, y);
view->session()->begin_reversible_command (_("add automation event"));
XMLNode& before = _line->the_list()->get_state();
_line->the_list()->add (when_d, y);
XMLNode& after = _line->the_list()->get_state();
/* XXX: hack! */
boost::shared_ptr<ARDOUR::MidiRegion> mr = boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region);
assert (mr);
view->session()->commit_reversible_command (
new MementoCommand<ARDOUR::AutomationList> (new ARDOUR::MidiAutomationListBinder (mr->midi_source(), _parameter), &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 (framepos_t pos, void* src, double* ignored)
{
if (_line) {
_line->set_maximum_time (_region->length ());
}
return RegionView::set_position(pos, src, ignored);
}
void
AutomationRegionView::reset_width_dependent_items (double pixel_width)
{
RegionView::reset_width_dependent_items(pixel_width);
if (_line) {
_line->reset();
}
}
void
AutomationRegionView::region_resized (const PBD::PropertyChange& what_changed)
{
RegionView::region_resized (what_changed);
if (!_line) {
return;
}
if (what_changed.contains (ARDOUR::Properties::start)) {
_line->set_offset (_region->start ());
}
if (what_changed.contains (ARDOUR::Properties::length)) {
_line->set_maximum_time (_region->length());
}
}
void
AutomationRegionView::entered (bool)
{
if (_line) {
_line->track_entered();
}
}
void
AutomationRegionView::exited ()
{
if (_line) {
_line->track_exited();
}
}