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livetrax/gtk2_ardour/midi_region_view.cc

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/*
Copyright (C) 2001-2007 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 <cmath>
#include <cassert>
#include <algorithm>
#include <gtkmm.h>
#include <gtkmm2ext/gtk_ui.h>
#include <sigc++/signal.h>
#include <ardour/playlist.h>
#include <ardour/tempo.h>
#include <ardour/midi_region.h>
#include <ardour/midi_source.h>
#include <ardour/midi_diskstream.h>
#include <ardour/midi_events.h>
#include <ardour/midi_model.h>
#include "streamview.h"
#include "midi_region_view.h"
#include "midi_streamview.h"
#include "midi_time_axis.h"
#include "simplerect.h"
#include "simpleline.h"
#include "canvas-hit.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)
, _default_note_length(0.0)
, _active_notes(0)
, _delta_command(NULL)
, _command_mode(None)
{
}
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)
, _default_note_length(0.0)
, _active_notes(0)
, _delta_command(NULL)
, _command_mode(None)
{
}
void
MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
{
if (wfd)
midi_region()->midi_source(0)->load_model();
const Meter& m = trackview.session().tempo_map().meter_at(_region->start());
const Tempo& t = trackview.session().tempo_map().tempo_at(_region->start());
_default_note_length = m.frames_per_bar(t, trackview.session().frame_rate())
/ m.beats_per_bar();
_model = midi_region()->midi_source(0)->model();
_enable_display = false;
RegionView::init(basic_color, 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 ();
_enable_display = true;
if (_model) {
if (wfd) {
redisplay_model();
}
_model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
}
group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
}
bool
MidiRegionView::canvas_event(GdkEvent* ev)
{
enum State { None, Pressed, SelectDragging, AddDragging };
static int press_button = 0;
static State _state;
static double drag_start_x, drag_start_y;
static double last_x, last_y;
double event_x, event_y;
static ArdourCanvas::SimpleRect* drag_rect = NULL;
if (trackview.editor.current_mouse_mode() != MouseNote)
return false;
switch (ev->type) {
case GDK_KEY_PRESS:
if (ev->key.keyval == GDK_Delete)
start_remove_command();
break;
case GDK_KEY_RELEASE:
if (_command_mode == Remove && ev->key.keyval == GDK_Delete)
apply_command();
break;
case GDK_BUTTON_PRESS:
//group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK, ev->button.time);
_state = Pressed;
press_button = ev->button.button;
//cerr << "PRESSED: " << press_button << endl;
return true;
case GDK_MOTION_NOTIFY:
event_x = ev->motion.x;
event_y = ev->motion.y;
group->w2i(event_x, event_y);
switch (_state) {
case Pressed: // Drag start
if (press_button == 1 && _command_mode != Remove) { // Select rect start
group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
last_x = event_x;
last_y = event_y;
drag_start_x = event_x;
drag_start_y = event_y;
drag_rect = new ArdourCanvas::SimpleRect(*group);
drag_rect->property_x1() = event_x;
drag_rect->property_y1() = event_y;
drag_rect->property_x2() = event_x;
drag_rect->property_y2() = event_y;
drag_rect->property_outline_what() = 0xFF;
drag_rect->property_outline_color_rgba() = 0xFF000099;
drag_rect->property_fill_color_rgba() = 0xFFDDDD33;
_state = SelectDragging;
return true;
} else if (press_button == 3) { // Add note drag start
group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
last_x = event_x;
last_y = event_y;
drag_start_x = event_x;
drag_start_y = event_y;
nframes_t event_frame = midi_view()->editor.pixel_to_frame(event_x);
midi_view()->editor.snap_to(event_frame);
drag_rect = new ArdourCanvas::SimpleRect(*group);
drag_rect->property_x1() = midi_view()->editor.frame_to_pixel(event_frame);
drag_rect->property_y1() = midi_stream_view()->note_to_y(midi_stream_view()->y_to_note(event_y));
drag_rect->property_x2() = event_x;
drag_rect->property_y2() = drag_rect->property_y1() + floor(midi_stream_view()->note_height());
drag_rect->property_outline_what() = 0xFF;
drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
drag_rect->property_fill_color_rgba() = 0xFFFFFF66;
_state = AddDragging;
return true;
}
break;
case SelectDragging: // Select rect motion
case AddDragging: // Add note rect motion
if (ev->motion.is_hint) {
int t_x;
int t_y;
GdkModifierType state;
gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
event_x = t_x;
event_y = t_y;
}
if (_state == AddDragging) {
nframes_t event_frame = midi_view()->editor.pixel_to_frame(event_x);
midi_view()->editor.snap_to(event_frame);
event_x = midi_view()->editor.frame_to_pixel(event_frame);
}
if (drag_rect)
drag_rect->property_x2() = event_x;
if (drag_rect && _state == SelectDragging)
drag_rect->property_y2() = event_y;
last_x = event_x;
last_y = event_y;
return true;
default:
_state = None;
break;
}
break;
case GDK_BUTTON_RELEASE:
event_x = ev->motion.x;
event_y = ev->motion.y;
group->w2i(event_x, event_y);
group->ungrab(ev->button.time);
switch (_state) {
case Pressed: // Clicked
if (ev->button.button == 3) {
nframes_t event_frame = midi_view()->editor.pixel_to_frame(event_x);
midi_view()->editor.snap_to(event_frame);
event_x = midi_view()->editor.frame_to_pixel(event_frame);
create_note_at(event_x, event_y, _default_note_length);
}
_state = None;
return true;
case SelectDragging: // Select drag done
_state = None;
delete drag_rect;
drag_rect = NULL;
return true;
case AddDragging: // Add drag done
_state = None;
if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
create_note_at(drag_rect->property_x1(), drag_rect->property_y1(),
trackview.editor.pixel_to_frame(
drag_rect->property_x2() - drag_rect->property_x1()));
}
delete drag_rect;
drag_rect = NULL;
return true;
default:
break;
}
default:
break;
}
return false;
}
/** Add a note to the model, and the view, at a canvas (click) coordinate */
void
MidiRegionView::create_note_at(double x, double y, double dur)
{
MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
MidiStreamView* const view = mtv->midi_view();
double note = midi_stream_view()->y_to_note(y);
assert(note >= 0.0);
assert(note <= 127.0);
const nframes_t stamp = trackview.editor.pixel_to_frame (x);
assert(stamp >= 0);
//assert(stamp <= _region->length());
//const Meter& m = trackview.session().tempo_map().meter_at(stamp);
//const Tempo& t = trackview.session().tempo_map().tempo_at(stamp);
//double dur = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
// Add a 1 beat long note (for now)
const MidiModel::Note new_note(stamp, dur, (uint8_t)note, 0x40);
view->update_bounds(new_note.note());
MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
cmd->add(new_note);
_model->apply_command(cmd);
//add_note(new_note);
}
void
MidiRegionView::clear_events()
{
for (std::vector<ArdourCanvas::Item*>::iterator i = _events.begin(); i != _events.end(); ++i)
delete *i;
_events.clear();
}
void
MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
{
_model = model;
if (_enable_display)
redisplay_model();
}
void
MidiRegionView::redisplay_model()
{
clear_events();
if (_model) {
begin_write();
for (size_t i=0; i < _model->n_notes(); ++i)
add_note(_model->note_at(i));
end_write();
} else {
warning << "MidiRegionView::redisplay_model called without a model" << endmsg;
}
}
MidiRegionView::~MidiRegionView ()
{
in_destructor = true;
end_write();
RegionViewGoingAway (this); /* EMIT_SIGNAL */
}
void
MidiRegionView::region_resized (Change what_changed)
{
RegionView::region_resized(what_changed);
if (what_changed & ARDOUR::PositionChanged) {
if (_enable_display)
redisplay_model();
} 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);
if (_enable_display)
redisplay_model();
}
void
MidiRegionView::set_y_position_and_height (double y, double h)
{
RegionView::set_y_position_and_height(y, h - 1);
if (_enable_display)
redisplay_model();
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)
{
RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
assert(rtv);
double unit_position = _region->position () / samples_per_unit;
GhostRegion* ghost = new GhostRegion (atv, unit_position);
ghost->set_height ();
ghost->set_duration (_region->length() / samples_per_unit);
ghosts.push_back (ghost);
ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
return ghost;
}
/** Begin tracking note state for successive calls to add_event
*/
void
MidiRegionView::begin_write()
{
_active_notes = new CanvasNote*[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;
}
/** Add a MIDI event.
*
* This is used while recording, and handles displaying still-unresolved notes.
* Displaying an existing model is simpler, and done with add_note.
*/
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");*/
ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
if (midi_view()->note_mode() == Sustained) {
if ((ev.buffer()[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
const Byte& note = ev.buffer()[1];
const double y1 = midi_stream_view()->note_to_y(note);
CanvasNote* ev_rect = new CanvasNote(*this, *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 + floor(midi_stream_view()->note_height());
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;
ev_rect->raise_to_top();
_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;
}
}
} else if (midi_view()->note_mode() == Percussive) {
const Byte& note = ev.buffer()[1];
const double diamond_size = midi_stream_view()->note_height() / 2.0;
const double x = trackview.editor.frame_to_pixel((nframes_t)ev.time());
const double y = midi_stream_view()->note_to_y(note) + (diamond_size / 2.0);
CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
ev_diamond->move(x, y);
ev_diamond->show();
ev_diamond->property_outline_color_rgba() = 0xFFFFFFDD;
ev_diamond->property_fill_color_rgba() = 0xFFFFFF66;
_events.push_back(ev_diamond);
}
}
/** 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());
}
/** Add a MIDI note to the view (with duration).
*
* This does no 'realtime' note resolution, notes from a MidiModel have a
* duration so they can be drawn in full immediately.
*/
void
MidiRegionView::add_note (const MidiModel::Note& note)
{
assert(note.time() >= 0);
assert(note.time() < _region->length());
//assert(note.time() + note.duration < _region->length());
ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
const uint8_t fill_alpha = 0x20 + (uint8_t)(note.velocity() * 1.5);
const uint32_t fill = RGBA_TO_UINT(0xE0 + note.velocity()/127.0 * 0x10, 0xE0, 0xE0, fill_alpha);
const uint8_t outline_alpha = 0x80 + (uint8_t)(note.velocity());
const uint32_t outline = RGBA_TO_UINT(0xE0 + note.velocity()/127.0 * 0x10, 0xE0, 0xE0, outline_alpha);
//printf("Event, time = %f, note = %d\n", note.time(), note.note());
if (midi_view()->note_mode() == Sustained) {
const double y1 = midi_stream_view()->note_to_y(note.note());
ArdourCanvas::SimpleRect * ev_rect = new CanvasNote(*this, *group, &note);
ev_rect->property_x1() = trackview.editor.frame_to_pixel((nframes_t)note.time());
ev_rect->property_y1() = y1;
ev_rect->property_x2() = trackview.editor.frame_to_pixel((nframes_t)(note.end_time()));
ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
ev_rect->property_fill_color_rgba() = fill;
ev_rect->property_outline_color_rgba() = outline;
ev_rect->property_outline_what() = (guint32) 0xF; // all edges
ev_rect->show();
_events.push_back(ev_rect);
} else if (midi_view()->note_mode() == Percussive) {
const double diamond_size = midi_stream_view()->note_height() / 2.0;
const double x = trackview.editor.frame_to_pixel((nframes_t)note.time());
const double y = midi_stream_view()->note_to_y(note.note()) + (diamond_size / 2.0) - 2;
CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
ev_diamond->move(x, y);
ev_diamond->show();
ev_diamond->property_fill_color_rgba() = fill;
ev_diamond->property_outline_color_rgba() = outline;
_events.push_back(ev_diamond);
}
}