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livetrax/gtk2_ardour/midi_streamview.cc
Carl Hetherington aa00dbc40e Fix MIDI streamview grid. Fixes #3460. 
git-svn-id: svn://localhost/ardour2/branches/3.0@7806 d708f5d6-7413-0410-9779-e7cbd77b26cf
2010-09-19 15:50:22 +00:00

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/*
Copyright (C) 2001-2007 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 <utility>
#include <gtkmm.h>
#include <gtkmm2ext/gtk_ui.h>
#include "ardour/midi_diskstream.h"
#include "ardour/midi_playlist.h"
#include "ardour/midi_region.h"
#include "ardour/midi_source.h"
#include "ardour/midi_track.h"
#include "ardour/region_factory.h"
#include "ardour/smf_source.h"
#include "ardour/session.h"
#include "ardour_ui.h"
#include "canvas-simplerect.h"
#include "gui_thread.h"
#include "lineset.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 "simplerect.h"
#include "utils.h"
using namespace std;
using namespace ARDOUR;
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(60)
, _highest_note(71)
, _data_note_min(60)
, _data_note_max(71)
, _note_lines (0)
{
/* use a group dedicated to MIDI underlays. Audio underlays are not in this group. */
midi_underlay_group = new ArdourCanvas::Group (*_canvas_group);
midi_underlay_group->lower_to_bottom();
/* 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->property_x1() = 0;
_note_lines->property_y1() = 0;
_note_lines->property_x2() = DBL_MAX;
_note_lines->property_y2() = 0;
_note_lines->signal_event().connect(sigc::bind(
sigc::mem_fun(_trackview.editor(), &PublicEditor::canvas_stream_view_event),
_note_lines, &_trackview));
_note_lines->lower_to_bottom();
color_handler ();
ColorsChanged.connect(sigc::mem_fun(*this, &MidiStreamView::color_handler));
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 ()
{
}
static void
veto_note_range(uint8_t& min, uint8_t& max)
{
/* Legal notes, thanks */
clamp_to_0_127(min);
clamp_to_0_127(max);
/* Always display at least one octave in [0, 127] */
if (max == 127) {
if (min > (127 - 11)) {
min = 127 - 11;
}
} else if (max < min + 11) {
uint8_t d = 11 - (max - min);
if (max + d/2 > 127) {
min -= d;
} else {
min -= d / 2;
max += d / 2;
}
}
assert(max - min >= 11);
assert(max <= 127);
assert(min <= 127);
}
RegionView*
MidiStreamView::create_region_view (boost::shared_ptr<Region> r, bool /*wfd*/, bool)
{
boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (r);
if (region == 0) {
return 0;
}
RegionView* region_view = new MidiRegionView (_canvas_group, _trackview, region,
_samples_per_unit, region_color);
region_view->init (region_color, false);
return region_view;
}
RegionView*
MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wfd, bool recording)
{
boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (r);
if (region == 0) {
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), wfd);
return 0;
}
}
MidiRegionView* region_view = dynamic_cast<MidiRegionView*> (create_region_view (r, wfd, recording));
if (region_view == 0) {
return 0;
}
region_views.push_front (region_view);
/* display events and find note range */
display_region (region_view, wfd);
/* catch regionview going away */
region->DropReferences.connect (*this, invalidator (*this), boost::bind (&MidiStreamView::remove_region_view, this, region), gui_context());
RegionViewAdded (region_view);
return region_view;
}
void
MidiStreamView::display_region(MidiRegionView* region_view, bool load_model)
{
if ( ! region_view)
return;
region_view->enable_display(true);
boost::shared_ptr<MidiSource> source(region_view->midi_region()->midi_source(0));
if (load_model) {
source->load_model();
}
_range_dirty = update_data_note_range(
source->model()->lowest_note(),
source->model()->highest_note());
// Display region contents
region_view->set_height(height);
region_view->display_model(source->model());
}
void
MidiStreamView::display_track (boost::shared_ptr<Track> tr)
{
StreamView::display_track (tr);
draw_note_lines();
NoteRangeChanged();
}
void
MidiStreamView::update_contents_metrics(boost::shared_ptr<Region> r)
{
boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(r);
if (mr) {
mr->midi_source(0)->load_model();
_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::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;
}
// Extend visible range to show newly recorded data, if necessary
_lowest_note = std::min(_lowest_note, _data_note_min);
_highest_note = std::max(_highest_note, _data_note_max);
veto_note_range(_lowest_note, _highest_note);
// Flag region views as invalid and disable drawing
for (i = region_views.begin(); i != region_views.end(); ++i) {
(*i)->set_valid(false);
(*i)->enable_display(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->property_y2() = height;
apply_note_range (lowest_note(), highest_note(), true);
}
void
MidiStreamView::draw_note_lines()
{
if (!_note_lines) {
return;
}
double y;
double prev_y = contents_height();
uint32_t color;
_note_lines->clear();
if(height < 140){
return;
}
for (int i = lowest_note(); i <= highest_note(); ++i) {
y = floor(note_to_y(i));
_note_lines->add_line(prev_y, 1.0, ARDOUR_UI::config()->canvasvar_PianoRollBlackOutline.get());
switch (i % 12) {
case 1:
case 3:
case 6:
case 8:
case 10:
color = ARDOUR_UI::config()->canvasvar_PianoRollBlack.get();
break;
default:
color = ARDOUR_UI::config()->canvasvar_PianoRollWhite.get();
break;
}
if (i == highest_note()) {
_note_lines->add_line(y, prev_y - y, color);
} else {
_note_lines->add_line(y + 1.0, prev_y - y - 1.0, 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;
int range = _highest_note - _lowest_note;
int pixels_per_note = floor (height/range);
/* do not grow note height beyond 10 pixels */
if (pixels_per_note > 10) {
int available_note_range = floor ((height)/10);
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) {
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
((MidiRegionView*)(*i))->apply_note_range(_lowest_note, _highest_note);
}
}
NoteRangeChanged();
}
void
MidiStreamView::update_note_range(uint8_t note_num)
{
assert(note_num <= 127);
_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_rolling()) {
if (!rec_active &&
_trackview.session()->record_status() == Session::Recording &&
_trackview.track()->record_enabled()) {
if (Config->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());
_trackview.midi_track()->write_source()->ViewDataRangeReady.connect
(rec_data_ready_connections,
invalidator (*this),
ui_bind (&MidiStreamView::rec_data_range_ready, this, _1, _2, boost::weak_ptr<Source>(_trackview.midi_track()->write_source())),
gui_context());
// handle multi
nframes_t start = 0;
if (rec_regions.size() > 0) {
start = rec_regions.back().first->start()
+ _trackview.track()->get_captured_frames(rec_regions.size()-1);
}
PropertyList plist;
plist.add (ARDOUR::Properties::start, start);
plist.add (ARDOUR::Properties::length, 1);
plist.add (ARDOUR::Properties::name, string());
plist.add (ARDOUR::Properties::layer, 0);
boost::shared_ptr<MidiRegion> region (boost::dynamic_pointer_cast<MidiRegion>
(RegionFactory::create (sources, plist, false)));
assert(region);
region->block_property_changes ();
region->set_position (_trackview.session()->transport_frame(), this);
rec_regions.push_back (make_pair(region, (RegionView*)0));
// rec regions are destroyed in setup_rec_box
/* we add the region later */
}
/* start a new rec box */
boost::shared_ptr<MidiTrack> mt = _trackview.midi_track(); /* we know what it is already */
nframes_t frame_pos = mt->current_capture_start ();
gdouble xstart = _trackview.editor().frame_to_pixel (frame_pos);
gdouble xend;
uint32_t fill_color;
assert(_trackview.midi_track()->mode() == Normal);
xend = xstart;
fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*_canvas_group);
rec_rect->property_x1() = xstart;
rec_rect->property_y1() = 1.0;
rec_rect->property_x2() = xend;
rec_rect->property_y2() = (double) _trackview.current_height() - 1;
rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
rec_rect->property_fill_color_rgba() = fill_color;
rec_rect->lower_to_bottom();
RecBoxInfo recbox;
recbox.rectangle = rec_rect;
recbox.start = _trackview.session()->transport_frame();
recbox.length = 0;
rec_rects.push_back (recbox);
screen_update_connection.disconnect();
screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (
sigc::mem_fun (*this, &MidiStreamView::update_rec_box));
rec_updating = true;
rec_active = true;
} else if (rec_active &&
(_trackview.session()->record_status() != Session::Recording ||
!_trackview.track()->record_enabled())) {
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;
if (!rec_rects.empty() || !rec_regions.empty()) {
/* disconnect rapid update */
screen_update_connection.disconnect();
rec_data_ready_connections.drop_connections ();
rec_updating = false;
rec_active = false;
/* remove temp regions */
for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end();) {
list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
tmp = iter;
++tmp;
(*iter).first->drop_references ();
iter = tmp;
}
rec_regions.clear();
// cerr << "\tclear " << rec_rects.size() << " rec rects\n";
/* transport stopped, clear boxes */
for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
RecBoxInfo &rect = (*iter);
delete rect.rectangle;
}
rec_rects.clear();
}
}
}
void
MidiStreamView::update_rec_regions (boost::shared_ptr<MidiModel> data, nframes_t start, nframes_t dur)
{
ENSURE_GUI_THREAD (*this, &MidiStreamView::update_rec_regions, data, start, dur)
if (Config->get_show_waveforms_while_recording ()) {
uint32_t n = 0;
bool update_range = false;
for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin();
iter != rec_regions.end(); n++) {
list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp = iter;
++tmp;
if (!canvas_item_visible (rec_rects[n].rectangle)) {
/* rect already hidden, this region is done */
iter = tmp;
continue;
}
boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(iter->first);
if (!region) {
iter = tmp;
continue;
}
nframes_t origlen = region->length();
if (region == rec_regions.back().first && rec_active) {
if (start >= region->midi_source(0)->timeline_position()) {
nframes_t nlen = start + dur - region->position();
if (nlen != region->length()) {
region->suspend_property_changes ();
region->set_position (_trackview.track()->get_capture_start_frame(n), this);
region->set_length (start + dur - region->position(), this);
region->resume_property_changes ();
if (origlen == 1) {
/* our special initial length */
iter->second = add_region_view_internal (region, false);
((MidiRegionView*)iter->second)->begin_write();
}
/* also update rect */
ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
gdouble xend = _trackview.editor().frame_to_pixel (region->position() + region->length());
rect->property_x2() = xend;
ARDOUR::BeatsFramesConverter tconv(_trackview.session()->tempo_map(), region->position());
const MidiModel::TimeType start_beats = tconv.from(start);
/* draw events */
MidiRegionView* mrv = (MidiRegionView*)iter->second;
for (MidiModel::Notes::const_iterator i = data->note_lower_bound(start_beats);
i != data->notes().end(); ++i) {
const boost::shared_ptr<MidiRegionView::NoteType>& note = *i;
cerr << "New note arrived, length = " << note->length()
<< " num " << note->note()
<< endl;
if (note->length() == 0) {
/* we got NoteOn but not NoteOff (yet)
*/
continue;
}
nframes_t note_start_frames = tconv.to(note->time());
nframes_t note_end_frames = tconv.to(note->end_time());
if (note->length() > 0 && note_end_frames + region->position() > start) {
mrv->resolve_note(note->note(), note_end_frames);
}
if (note_start_frames + region->position() < start) {
continue;
}
if (note_start_frames + region->position() > start + dur) {
break;
}
if (note->note() < _lowest_note) {
_lowest_note = note->note();
update_range = true;
} else if (note->note() > _highest_note) {
_highest_note = note->note();
update_range = true;
}
mrv->add_note (note, !update_range);
}
mrv->extend_active_notes();
}
}
} else {
nframes_t nlen = _trackview.track()->get_captured_frames(n);
if (nlen != region->length()) {
if (region->source_length(0) >= region->position() + nlen) {
region->suspend_property_changes ();
region->set_position (_trackview.track()->get_capture_start_frame(n), this);
region->set_length (nlen, this);
region->resume_property_changes ();
if (origlen == 1) {
/* our special initial length */
iter->second = add_region_view_internal (region, false);
}
/* also hide rect */
ArdourCanvas::Item * rect = rec_rects[n].rectangle;
rect->hide();
}
}
}
iter = tmp;
}
if (update_range)
update_contents_height();
}
}
void
MidiStreamView::rec_data_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
{
// this is called from the butler thread for now
ENSURE_GUI_THREAD (*this, &MidiStreamView::rec_data_range_ready, start, cnt, weak_src)
boost::shared_ptr<SMFSource> src (boost::dynamic_pointer_cast<SMFSource>(weak_src.lock()));
if (!src) {
return;
}
if (start + cnt > last_rec_data_frame) {
last_rec_data_frame = start + cnt;
}
this->update_rec_regions (src->model(), start, cnt);
}
void
MidiStreamView::color_handler ()
{
draw_note_lines ();
if (_trackview.is_midi_track()) {
canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
} else {
canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();;
}
}
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);
}
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