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livetrax/gtk2_ardour/midi_region_view.cc

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/*
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/midi_region.h>
#include <ardour/midi_source.h>
#include <ardour/midi_diskstream.h>
#include <ardour/midi_events.h>
#include "streamview.h"
#include "midi_region_view.h"
#include "midi_time_axis.h"
#include "simplerect.h"
#include "simpleline.h"
#include "public_editor.h"
#include "ghostregion.h"
#include "midi_time_axis.h"
#include "utils.h"
#include "rgb_macros.h"
#include "gui_thread.h"
#include "i18n.h"
using namespace sigc;
using namespace ARDOUR;
using namespace PBD;
using namespace Editing;
using namespace ArdourCanvas;
MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
Gdk::Color& basic_color)
: RegionView (parent, tv, r, spu, basic_color)
, _active_notes(0)
{
}
MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
: RegionView (parent, tv, r, spu, basic_color, visibility)
, _active_notes(0)
{
}
void
MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
{
// FIXME: Some redundancy here with RegionView::init. Need to figure out
// where order is important and where it isn't...
// FIXME
RegionView::init(basic_color, /*wfd*/false);
compute_colors (basic_color);
reset_width_dependent_items ((double) _region->length() / samples_per_unit);
set_y_position_and_height (0, trackview.height);
region_muted ();
region_resized (BoundsChanged);
region_locked ();
_region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
set_colors ();
if (wfd) {
midi_region()->midi_source(0)->load_model();
display_events();
}
}
void
MidiRegionView::display_events()
{
for (std::vector<ArdourCanvas::Item*>::iterator i = _events.begin(); i != _events.end(); ++i)
delete *i;
_events.clear();
begin_write();
for (size_t i=0; i < midi_region()->midi_source(0)->model()->n_events(); ++i)
add_event(midi_region()->midi_source(0)->model()->event_at(i));
end_write();
}
MidiRegionView::~MidiRegionView ()
{
in_destructor = true;
end_write();
RegionViewGoingAway (this); /* EMIT_SIGNAL */
}
boost::shared_ptr<ARDOUR::MidiRegion>
MidiRegionView::midi_region() const
{
// "Guaranteed" to succeed...
return boost::dynamic_pointer_cast<MidiRegion>(_region);
}
void
MidiRegionView::region_resized (Change what_changed)
{
RegionView::region_resized(what_changed);
if (what_changed & ARDOUR::PositionChanged) {
display_events();
} else if (what_changed & Change (StartChanged)) {
//cerr << "MIDI RV START CHANGED" << endl;
} else if (what_changed & Change (LengthChanged)) {
//cerr << "MIDI RV LENGTH CHANGED" << endl;
}
}
void
MidiRegionView::reset_width_dependent_items (double pixel_width)
{
RegionView::reset_width_dependent_items(pixel_width);
assert(_pixel_width == pixel_width);
display_events();
}
void
MidiRegionView::set_y_position_and_height (double y, double h)
{
RegionView::set_y_position_and_height(y, h - 1);
display_events();
if (name_text) {
name_text->raise_to_top();
}
}
void
MidiRegionView::show_region_editor ()
{
cerr << "No MIDI region editor." << endl;
}
GhostRegion*
MidiRegionView::add_ghost (AutomationTimeAxisView& atv)
{
throw; // FIXME
return NULL;
}
/** Begin tracking note state for successive calls to add_event
*/
void
MidiRegionView::begin_write()
{
_active_notes = new ArdourCanvas::SimpleRect*[128];
for (unsigned i=0; i < 128; ++i)
_active_notes[i] = NULL;
}
/** Destroy note state for add_event
*/
void
MidiRegionView::end_write()
{
delete[] _active_notes;
_active_notes = NULL;
}
void
MidiRegionView::add_event (const MidiEvent& ev)
{
/*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
for (size_t i=0; i < ev.size; ++i) {
printf("%X ", ev.buffer[i]);
}
printf("\n\n");*/
double y1 = trackview.height / 2.0;
if ((ev.buffer[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
const Byte& note = ev.buffer[1];
y1 = trackview.height - ((trackview.height / 127.0) * note);
ArdourCanvas::SimpleRect * ev_rect = new Gnome::Canvas::SimpleRect(
*(ArdourCanvas::Group*)get_canvas_group());
ev_rect->property_x1() = trackview.editor.frame_to_pixel (
(nframes_t)ev.time);
ev_rect->property_y1() = y1;
ev_rect->property_x2() = trackview.editor.frame_to_pixel (
_region->length());
ev_rect->property_y2() = y1 + ceil(trackview.height / 127.0);
ev_rect->property_outline_color_rgba() = 0xFFFFFFAA;
/* outline all but right edge */
ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
ev_rect->property_fill_color_rgba() = 0xFFFFFF66;
_events.push_back(ev_rect);
if (_active_notes)
_active_notes[note] = ev_rect;
} else if ((ev.buffer[0] & 0xF0) == MIDI_CMD_NOTE_OFF) {
const Byte& note = ev.buffer[1];
if (_active_notes && _active_notes[note]) {
_active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)ev.time);
_active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
_active_notes[note] = NULL;
}
}
}
/** Extend active notes to rightmost edge of region (if length is changed)
*/
void
MidiRegionView::extend_active_notes()
{
if (!_active_notes)
return;
for (unsigned i=0; i < 128; ++i)
if (_active_notes[i])
_active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
}