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livetrax/gtk2_ardour/midi_streamview.cc

712 lines
19 KiB
C++

/*
* Copyright (C) 2006-2014 David Robillard <d@drobilla.net>
* Copyright (C) 2007 Doug McLain <doug@nostar.net>
* Copyright (C) 2008-2017 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2009-2012 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2014-2019 Robin Gareus <robin@gareus.org>
* Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com>
* Copyright (C) 2016 Nick Mainsbridge <mainsbridge@gmail.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 <cmath>
#include <utility>
#include <gtkmm.h>
#include <gtkmm2ext/gtk_ui.h>
#include "canvas/line_set.h"
#include "canvas/rectangle.h"
#include "ardour/midi_region.h"
#include "ardour/midi_source.h"
#include "ardour/midi_track.h"
#include "ardour/operations.h"
#include "ardour/region_factory.h"
#include "ardour/session.h"
#include "ardour/smf_source.h"
#include "ardour/evoral_types_convert.h"
#include "gui_thread.h"
#include "midi_region_view.h"
#include "midi_streamview.h"
#include "midi_time_axis.h"
#include "midi_util.h"
#include "public_editor.h"
#include "region_selection.h"
#include "region_view.h"
#include "rgb_macros.h"
#include "selection.h"
#include "ui_config.h"
#include "utils.h"
#include "pbd/i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace ARDOUR_UI_UTILS;
using namespace PBD;
using namespace Editing;
MidiStreamView::MidiStreamView (MidiTimeAxisView& tv)
: StreamView (tv)
, note_range_adjustment(0.0f, 0.0f, 0.0f)
, _range_dirty(false)
, _range_sum_cache(-1.0)
, _lowest_note(UIConfiguration::instance().get_default_lower_midi_note())
, _highest_note(UIConfiguration::instance().get_default_upper_midi_note())
, _data_note_min(60)
, _data_note_max(71)
, _note_lines (0)
, _updates_suspended (false)
{
/* use a group dedicated to MIDI underlays. Audio underlays are not in this group. */
_midi_underlay = new ArdourCanvas::Container (_canvas_group);
_midi_underlay->lower_to_bottom();
/* use a dedicated group for MIDI regions (on top of the grid and lines) */
_region_group = new ArdourCanvas::Container (_canvas_group);
_region_group->raise_to_top ();
_region_group->set_render_with_alpha (UIConfiguration::instance().modifier ("region alpha").a());
/* put the note lines in the timeaxisview's group, so it
can be put below ghost regions from MIDI underlays
*/
_note_lines = new ArdourCanvas::LineSet (_canvas_group, ArdourCanvas::LineSet::Horizontal);
_note_lines->Event.connect(
sigc::bind(sigc::mem_fun(_trackview.editor(),
&PublicEditor::canvas_stream_view_event),
_note_lines, &_trackview));
_note_lines->lower_to_bottom();
color_handler ();
UIConfiguration::instance().ColorsChanged.connect(sigc::mem_fun(*this, &MidiStreamView::color_handler));
UIConfiguration::instance().ParameterChanged.connect(sigc::mem_fun(*this, &MidiStreamView::parameter_changed));
note_range_adjustment.set_page_size(_highest_note - _lowest_note);
note_range_adjustment.set_value(_lowest_note);
note_range_adjustment.signal_value_changed().connect(
sigc::mem_fun(*this, &MidiStreamView::note_range_adjustment_changed));
}
MidiStreamView::~MidiStreamView ()
{
}
void
MidiStreamView::parameter_changed (string const & param)
{
if (param == X_("max-note-height")) {
apply_note_range (_lowest_note, _highest_note, true);
} else {
StreamView::parameter_changed (param);
}
}
RegionView*
MidiStreamView::create_region_view (std::shared_ptr<Region> r, bool /*wfd*/, bool recording)
{
std::shared_ptr<MidiRegion> region = std::dynamic_pointer_cast<MidiRegion> (r);
if (region == 0) {
return 0;
}
RegionView* region_view = NULL;
if (recording) {
region_view = new MidiRegionView (
_region_group, _trackview, region,
_samples_per_pixel, region_color, recording,
TimeAxisViewItem::Visibility(TimeAxisViewItem::ShowFrame));
} else {
region_view = new MidiRegionView (_region_group, _trackview, region,
_samples_per_pixel, region_color);
}
region_view->init (false);
return region_view;
}
RegionView*
MidiStreamView::add_region_view_internal (std::shared_ptr<Region> r, bool wait_for_data, bool recording)
{
std::shared_ptr<MidiRegion> region = std::dynamic_pointer_cast<MidiRegion> (r);
if (!region) {
return 0;
}
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
if ((*i)->region() == r) {
/* great. we already have a MidiRegionView for this Region. use it again. */
(*i)->set_valid (true);
display_region (dynamic_cast<MidiRegionView*>(*i), wait_for_data);
return 0;
}
}
MidiRegionView* region_view = dynamic_cast<MidiRegionView*> (create_region_view (r, wait_for_data, recording));
if (region_view == 0) {
return 0;
}
region_views.push_front (region_view);
{
RegionView::DisplaySuspender ds (*region_view, false);
display_region (region_view, wait_for_data);
/* fit note range if we are importing */
if (_trackview.session()->operation_in_progress (Operations::insert_file)) {
/* this will call display_region() */
set_note_range (ContentsRange);
}
}
/* catch regionview going away */
std::weak_ptr<Region> wr (region); // make this explicit
region->DropReferences.connect (*this, invalidator (*this), boost::bind (&MidiStreamView::remove_region_view, this, wr), gui_context());
RegionViewAdded (region_view);
return region_view;
}
void
MidiStreamView::display_region (MidiRegionView* region_view, bool)
{
if (!region_view) {
return;
}
RegionView::DisplaySuspender ds (*region_view, false);
region_view->set_height (child_height());
std::shared_ptr<MidiSource> source (region_view->midi_region()->midi_source(0));
if (!source) {
error << _("attempt to display MIDI region with no source") << endmsg;
return;
}
if (!source->model()) {
error << _("attempt to display MIDI region with no model") << endmsg;
return;
}
_range_dirty = update_data_note_range (source->model()->lowest_note(), source->model()->highest_note());
// Display region contents
region_view->display_model (source->model());
}
void
MidiStreamView::display_track (std::shared_ptr<Track> tr)
{
StreamView::display_track (tr);
draw_note_lines();
NoteRangeChanged(); /* EMIT SIGNAL*/
}
void
MidiStreamView::update_contents_metrics(std::shared_ptr<Region> r)
{
std::shared_ptr<MidiRegion> mr = std::dynamic_pointer_cast<MidiRegion>(r);
if (mr) {
Source::ReaderLock lm (mr->midi_source(0)->mutex());
_range_dirty = update_data_note_range (mr->model()->lowest_note(), mr->model()->highest_note());
}
}
bool
MidiStreamView::update_data_note_range(uint8_t min, uint8_t max)
{
bool dirty = false;
if (min < _data_note_min) {
_data_note_min = min;
dirty = true;
}
if (max > _data_note_max) {
_data_note_max = max;
dirty = true;
}
return dirty;
}
void
MidiStreamView::set_layer_display (LayerDisplay d)
{
//revert this change for now. Although stacked view is weirdly implemented wrt the "scroomer", it is still necessary to manage layered midi regions.
// if (d != Overlaid) {
// return;
// }
StreamView::set_layer_display (d);
for (auto& rv : region_views) {
rv->set_frame_color ();
}
}
void
MidiStreamView::redisplay_track ()
{
if (!_trackview.is_midi_track()) {
return;
}
list<RegionView*>::iterator i;
// Load models if necessary, and find note range of all our contents
_range_dirty = false;
_data_note_min = 127;
_data_note_max = 0;
_trackview.track()->playlist()->foreach_region(
sigc::mem_fun (*this, &StreamView::update_contents_metrics));
// No notes, use default range
if (!_range_dirty) {
_data_note_min = 60;
_data_note_max = 71;
}
vector<RegionView::DisplaySuspender> vds;
// Flag region views as invalid and disable drawing
for (i = region_views.begin(); i != region_views.end(); ++i) {
(*i)->set_valid (false);
vds.push_back (RegionView::DisplaySuspender (**i, false));
}
// Add and display region views, and flag them as valid
_trackview.track()->playlist()->foreach_region (sigc::hide_return (sigc::mem_fun (*this, &StreamView::add_region_view)));
// Stack regions by layer, and remove invalid regions
layer_regions();
// Update note range (not regions which are correct) and draw note lines
apply_note_range (_lowest_note, _highest_note, false);
}
void
MidiStreamView::update_contents_height ()
{
StreamView::update_contents_height();
_note_lines->set_extent (ArdourCanvas::COORD_MAX);
apply_note_range (lowest_note(), highest_note(), true);
}
void
MidiStreamView::draw_note_lines()
{
if (!_note_lines || _updates_suspended) {
return;
}
double y;
double prev_y = .5;
uint32_t color;
ArdourCanvas::LineSet::ResetRAII lr (*_note_lines);
if (child_height() < 140 || note_height() < 3) {
/* track is too small for note lines, or there are too many */
return;
}
/* do this is order of highest ... lowest since that matches the
* coordinate system in which y=0 is at the top
*/
for (int i = highest_note() + 1; i >= lowest_note(); --i) {
y = floor(note_to_y (i)) + .5;
/* this is the line actually corresponding to the division
* between notes
*/
if (i <= highest_note()) {
_note_lines->add_coord (y, 1.0, UIConfiguration::instance().color ("piano roll black outline"));
}
/* now add a thicker line/bar which covers the entire vertical
* height of this note.
*/
switch (i % 12) {
case 1:
case 3:
case 6:
case 8:
case 10:
color = UIConfiguration::instance().color_mod ("piano roll black", "piano roll black");
break;
default:
color = UIConfiguration::instance().color_mod ("piano roll white", "piano roll white");
break;
}
double h = y - prev_y;
double mid = y + (h/2.0);
if (mid >= 0 && h > 1.0) {
_note_lines->add_coord (mid, h, color);
}
prev_y = y;
}
}
void
MidiStreamView::set_note_range(VisibleNoteRange r)
{
if (r == FullRange) {
_lowest_note = 0;
_highest_note = 127;
} else {
_lowest_note = _data_note_min;
_highest_note = _data_note_max;
}
apply_note_range(_lowest_note, _highest_note, true);
}
void
MidiStreamView::apply_note_range(uint8_t lowest, uint8_t highest, bool to_region_views)
{
_highest_note = highest;
_lowest_note = lowest;
float uiscale = UIConfiguration::instance().get_ui_scale();
uiscale = expf (uiscale) / expf (1.f);
const int mnh = UIConfiguration::instance().get_max_note_height();
int const max_note_height = std::max<int> (mnh, mnh * uiscale);
int const range = _highest_note - _lowest_note;
int const available_note_range = floor (child_height() / max_note_height);
int additional_notes = available_note_range - range;
/* distribute additional notes to higher and lower ranges, clamp at 0 and 127 */
for (int i = 0; i < additional_notes; i++){
if (i % 2 && _highest_note < 127){
_highest_note++;
}
else if (i % 2) {
_lowest_note--;
}
else if (_lowest_note > 0){
_lowest_note--;
}
else {
_highest_note++;
}
}
note_range_adjustment.set_page_size (_highest_note - _lowest_note);
note_range_adjustment.set_value (_lowest_note);
draw_note_lines();
if (to_region_views) {
apply_note_range_to_regions ();
}
NoteRangeChanged(); /* EMIT SIGNAL*/
}
void
MidiStreamView::apply_note_range_to_regions ()
{
if (!_updates_suspended) {
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
((MidiRegionView*)(*i))->apply_note_range(_lowest_note, _highest_note);
}
}
}
void
MidiStreamView::update_note_range(uint8_t note_num)
{
_data_note_min = min(_data_note_min, note_num);
_data_note_max = max(_data_note_max, note_num);
}
void
MidiStreamView::setup_rec_box ()
{
// cerr << _trackview.name() << " streamview SRB\n";
if (!_trackview.session()->transport_stopped_or_stopping() &&
(_trackview.session()->transport_rolling() || _trackview.session()->get_record_enabled())) {
if (!rec_active &&
_trackview.session()->record_status() == Session::Recording &&
_trackview.track()->rec_enable_control()->get_value()) {
if (UIConfiguration::instance().get_show_waveforms_while_recording() && rec_regions.size() == rec_rects.size()) {
/* add a new region, but don't bother if they set show-waveforms-while-recording mid-record */
MidiRegion::SourceList sources;
rec_data_ready_connections.drop_connections ();
sources.push_back (_trackview.midi_track()->write_source());
// handle multi
timepos_t start;
if (rec_regions.size() > 0) {
start = rec_regions.back().first->start()
+ timepos_t (_trackview.track()->get_captured_samples (rec_regions.size() - 1));
}
if (!rec_regions.empty()) {
MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (rec_regions.back().second);
mrv->end_write ();
}
PropertyList plist;
plist.add (ARDOUR::Properties::start, start);
plist.add (ARDOUR::Properties::length, timepos_t (Temporal::Beats::ticks (1)));
/* Just above we're setting this nascent region's length to 1 tick. I think this is so
that the RegionView gets created with a non-zero width, as apparently creating a
RegionView with a zero width causes it never to be displayed (there is a warning in
TimeAxisViewItem::init about this). We don't want to use 1 sample since that results
in zero length musical time duration.
*/
plist.add (ARDOUR::Properties::name, string());
plist.add (ARDOUR::Properties::layer, 0);
std::shared_ptr<MidiRegion> region (std::dynamic_pointer_cast<MidiRegion>
(RegionFactory::create (sources, plist, false)));
if (region) {
/* MIDI regions should likely not be positioned using audio time, but this is
* just a rec-region, so we don't really care
*/
region->set_start (timepos_t (_trackview.track()->current_capture_start() - _trackview.track()->get_capture_start_sample (0)));
region->set_position (timepos_t (_trackview.track()->current_capture_start ()));
RegionView* rv = add_region_view_internal (region, false, true);
MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (rv);
mrv->begin_write ();
/* rec region will be destroyed in setup_rec_box */
rec_regions.push_back (make_pair (region, rv));
/* we add the region later */
setup_new_rec_layer_time (region);
} else {
error << _("failed to create MIDI region") << endmsg;
}
}
/* start a new rec box */
create_rec_box (_trackview.midi_track()->current_capture_start(), 0);
} else if (rec_active &&
(_trackview.session()->record_status() != Session::Recording ||
!_trackview.track()->rec_enable_control()->get_value())) {
screen_update_connection.disconnect();
rec_active = false;
rec_updating = false;
}
} else {
// cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
cleanup_rec_box ();
}
}
void
MidiStreamView::color_handler ()
{
_region_group->set_render_with_alpha (UIConfiguration::instance().modifier ("region alpha").a());
draw_note_lines ();
if (_trackview.is_midi_track()) {
canvas_rect->set_fill_color (UIConfiguration::instance().color_mod ("midi track base", "midi track base"));
} else {
canvas_rect->set_fill_color (UIConfiguration::instance().color ("midi bus base"));
}
}
void
MidiStreamView::note_range_adjustment_changed()
{
double sum = note_range_adjustment.get_value() + note_range_adjustment.get_page_size();
int lowest = (int) floor(note_range_adjustment.get_value());
int highest;
if (sum == _range_sum_cache) {
//cerr << "cached" << endl;
highest = (int) floor(sum);
} else {
//cerr << "recalc" << endl;
highest = lowest + (int) floor(note_range_adjustment.get_page_size());
_range_sum_cache = sum;
}
if (lowest == _lowest_note && highest == _highest_note) {
return;
}
//cerr << "note range adjustment changed: " << lowest << " " << highest << endl;
//cerr << " val=" << v_zoom_adjustment.get_value() << " page=" << v_zoom_adjustment.get_page_size() << " sum=" << v_zoom_adjustment.get_value() + v_zoom_adjustment.get_page_size() << endl;
_lowest_note = lowest;
_highest_note = highest;
apply_note_range(lowest, highest, true);
}
void
MidiStreamView::update_rec_box ()
{
StreamView::update_rec_box ();
if (rec_regions.empty()) {
return;
}
/* Update the region being recorded to reflect where we currently are */
std::shared_ptr<ARDOUR::Region> region = rec_regions.back().first;
region->set_length (timecnt_t (_trackview.track()->current_capture_end () - _trackview.track()->current_capture_start()));
MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (rec_regions.back().second);
mrv->extend_active_notes ();
}
uint8_t
MidiStreamView::y_to_note (double y) const
{
int const n = ((contents_height() - y) / contents_height() * (double)contents_note_range())
+ lowest_note();
if (n < 0) {
return 0;
} else if (n > 127) {
return 127;
}
/* min due to rounding and/or off-by-one errors */
return min ((uint8_t) n, highest_note());
}
/** Suspend updates to the regions' note ranges and our
* note lines until resume_updates() is called.
*/
void
MidiStreamView::suspend_updates ()
{
_updates_suspended = true;
}
/** Resume updates to region note ranges and note lines,
* and update them now.
*/
void
MidiStreamView::resume_updates ()
{
_updates_suspended = false;
draw_note_lines ();
apply_note_range_to_regions ();
_canvas_group->redraw ();
}
struct RegionPositionSorter {
bool operator() (RegionView* a, RegionView* b) {
return a->region()->position() < b->region()->position();
}
};
bool
MidiStreamView::paste (timepos_t const & pos, const Selection& selection, PasteContext& ctx)
{
/* Paste into the first region which starts on or before pos. Only called when
using an internal editing tool. */
if (region_views.empty()) {
return false;
}
region_views.sort (RegionView::PositionOrder());
list<RegionView*>::const_iterator prev = region_views.begin ();
for (list<RegionView*>::const_iterator i = region_views.begin(); i != region_views.end(); ++i) {
if ((*i)->region()->position() > pos) {
break;
}
prev = i;
}
std::shared_ptr<Region> r = (*prev)->region ();
/* If *prev doesn't cover pos, it's no good */
if (r->position() > pos || ((r->position() + r->length()) < pos)) {
return false;
}
MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (*prev);
return mrv ? mrv->paste(pos, selection, ctx) : false;
}
void
MidiStreamView::get_regions_with_selected_data (RegionSelection& rs)
{
for (list<RegionView*>::const_iterator i = region_views.begin(); i != region_views.end(); ++i) {
MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (*i);
if (!mrv) {
continue;
}
if (!mrv->selection().empty()) {
rs.add (*i);
}
}
}