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livetrax/gtk2_ardour/automation_line.cc

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/*
Copyright (C) 2002-2003 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.
*/
#ifdef COMPILER_MSVC
#include <float.h>
/* isinf() & isnan() are C99 standards, which older MSVC doesn't provide */
#define isinf(val) !((bool)_finite((double)val))
#define isnan(val) (bool)_isnan((double)val)
#endif
#include <cmath>
#include <climits>
#include <vector>
#include <fstream>
#include "boost/shared_ptr.hpp"
#include "pbd/floating.h"
#include "pbd/memento_command.h"
#include "pbd/stl_delete.h"
#include "pbd/stacktrace.h"
#include "ardour/automation_list.h"
#include "ardour/dB.h"
#include "ardour/debug.h"
#include "ardour/tempo.h"
#include "evoral/Curve.hpp"
#include "canvas/debug.h"
#include "automation_line.h"
#include "control_point.h"
#include "gui_thread.h"
#include "rgb_macros.h"
#include "ardour_ui.h"
#include "public_editor.h"
#include "selection.h"
#include "time_axis_view.h"
#include "point_selection.h"
#include "automation_time_axis.h"
#include "ardour/event_type_map.h"
#include "ardour/session.h"
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
using namespace Editing;
/** @param converter A TimeConverter whose origin_b is the start time of the AutomationList in session frames.
* This will not be deleted by AutomationLine.
*/
AutomationLine::AutomationLine (const string& name, TimeAxisView& tv, ArdourCanvas::Item& parent,
boost::shared_ptr<AutomationList> al,
Evoral::TimeConverter<double, framepos_t>* converter)
: trackview (tv)
, _name (name)
, alist (al)
, _time_converter (converter ? converter : new Evoral::IdentityConverter<double, framepos_t>)
, _parent_group (parent)
, _offset (0)
, _maximum_time (max_framepos)
{
if (converter) {
_time_converter = converter;
_our_time_converter = false;
} else {
_time_converter = new Evoral::IdentityConverter<double, framepos_t>;
_our_time_converter = true;
}
_visible = Line;
update_pending = false;
have_timeout = false;
_uses_gain_mapping = false;
no_draw = false;
_is_boolean = false;
terminal_points_can_slide = true;
_height = 0;
group = new ArdourCanvas::Container (&parent);
CANVAS_DEBUG_NAME (group, "region gain envelope group");
line = new ArdourCanvas::PolyLine (group);
CANVAS_DEBUG_NAME (line, "region gain envelope line");
line->set_data ("line", this);
line->set_outline_width (2.0);
line->set_covers_threshold (4.0);
line->Event.connect (sigc::mem_fun (*this, &AutomationLine::event_handler));
trackview.session()->register_with_memento_command_factory(alist->id(), this);
if (alist->parameter().type() == GainAutomation ||
alist->parameter().type() == EnvelopeAutomation) {
set_uses_gain_mapping (true);
}
interpolation_changed (alist->interpolation ());
connect_to_list ();
}
AutomationLine::~AutomationLine ()
{
vector_delete (&control_points);
delete group;
if (_our_time_converter) {
delete _time_converter;
}
}
bool
AutomationLine::event_handler (GdkEvent* event)
{
return PublicEditor::instance().canvas_line_event (event, line, this);
}
void
AutomationLine::update_visibility ()
{
if (_visible & Line) {
/* Only show the line there are some points, otherwise we may show an out-of-date line
when automation points have been removed (the line will still follow the shape of the
old points).
*/
if (alist->interpolation() != AutomationList::Discrete && control_points.size() >= 2) {
line->show();
} else {
line->hide ();
}
if (_visible & ControlPoints) {
for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
(*i)->show ();
}
} else if (_visible & SelectedControlPoints) {
for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
if ((*i)->get_selected()) {
(*i)->show ();
} else {
(*i)->hide ();
}
}
} else {
for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
(*i)->hide ();
}
}
} else {
line->hide ();
for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
(*i)->hide ();
}
}
}
void
AutomationLine::hide ()
{
/* leave control points setting unchanged, we are just hiding the
overall line
*/
set_visibility (AutomationLine::VisibleAspects (_visible & ~Line));
}
double
AutomationLine::control_point_box_size ()
{
if (alist->interpolation() == AutomationList::Discrete) {
return max((_height*4.0) / (double)(alist->parameter().max() - alist->parameter().min()),
4.0);
}
if (_height > TimeAxisView::preset_height (HeightLarger)) {
return 8.0;
} else if (_height > (guint32) TimeAxisView::preset_height (HeightNormal)) {
return 6.0;
}
return 4.0;
}
void
AutomationLine::set_height (guint32 h)
{
if (h != _height) {
_height = h;
double bsz = control_point_box_size();
for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
(*i)->set_size (bsz);
}
reset ();
}
}
void
AutomationLine::set_line_color (uint32_t color)
{
_line_color = color;
line->set_outline_color (color);
}
void
AutomationLine::set_uses_gain_mapping (bool yn)
{
if (yn != _uses_gain_mapping) {
_uses_gain_mapping = yn;
reset ();
}
}
ControlPoint*
AutomationLine::nth (uint32_t n)
{
if (n < control_points.size()) {
return control_points[n];
} else {
return 0;
}
}
ControlPoint const *
AutomationLine::nth (uint32_t n) const
{
if (n < control_points.size()) {
return control_points[n];
} else {
return 0;
}
}
void
AutomationLine::modify_point_y (ControlPoint& cp, double y)
{
/* clamp y-coord appropriately. y is supposed to be a normalized fraction (0.0-1.0),
and needs to be converted to a canvas unit distance.
*/
y = max (0.0, y);
y = min (1.0, y);
y = _height - (y * _height);
double const x = trackview.editor().sample_to_pixel_unrounded (_time_converter->to((*cp.model())->when) - _offset);
trackview.editor().session()->begin_reversible_command (_("automation event move"));
trackview.editor().session()->add_command (
new MementoCommand<AutomationList> (memento_command_binder(), &get_state(), 0));
cp.move_to (x, y, ControlPoint::Full);
reset_line_coords (cp);
if (line_points.size() > 1) {
line->set (line_points);
}
alist->freeze ();
sync_model_with_view_point (cp);
alist->thaw ();
update_pending = false;
trackview.editor().session()->add_command (
new MementoCommand<AutomationList> (memento_command_binder(), 0, &alist->get_state()));
trackview.editor().session()->commit_reversible_command ();
trackview.editor().session()->set_dirty ();
}
void
AutomationLine::reset_line_coords (ControlPoint& cp)
{
if (cp.view_index() < line_points.size()) {
line_points[cp.view_index()].x = cp.get_x ();
line_points[cp.view_index()].y = cp.get_y ();
}
}
void
AutomationLine::sync_model_with_view_points (list<ControlPoint*> cp)
{
update_pending = true;
for (list<ControlPoint*>::iterator i = cp.begin(); i != cp.end(); ++i) {
sync_model_with_view_point (**i);
}
}
string
AutomationLine::get_verbose_cursor_string (double fraction) const
{
std::string s = fraction_to_string (fraction);
if (_uses_gain_mapping) {
s += " dB";
}
return s;
}
string
AutomationLine::get_verbose_cursor_relative_string (double original, double fraction) const
{
std::string s = fraction_to_string (fraction);
if (_uses_gain_mapping) {
s += " dB";
}
std::string d = fraction_to_relative_string (original, fraction);
if (!d.empty()) {
s += " (\u0394";
s += d;
if (_uses_gain_mapping) {
s += " dB";
}
s += ')';
}
return s;
}
/**
* @param fraction y fraction
* @return string representation of this value, using dB if appropriate.
*/
string
AutomationLine::fraction_to_string (double fraction) const
{
char buf[32];
if (_uses_gain_mapping) {
if (fraction == 0.0) {
snprintf (buf, sizeof (buf), "-inf");
} else {
snprintf (buf, sizeof (buf), "%.1f", accurate_coefficient_to_dB (slider_position_to_gain_with_max (fraction, Config->get_max_gain())));
}
} else {
view_to_model_coord_y (fraction);
if (EventTypeMap::instance().is_integer (alist->parameter())) {
snprintf (buf, sizeof (buf), "%d", (int)fraction);
} else {
snprintf (buf, sizeof (buf), "%.2f", fraction);
}
}
return buf;
}
/**
* @param original an old y-axis fraction
* @param fraction the new y fraction
* @return string representation of the difference between original and fraction, using dB if appropriate.
*/
string
AutomationLine::fraction_to_relative_string (double original, double fraction) const
{
char buf[32];
if (original == fraction) {
return "0";
}
if (_uses_gain_mapping) {
if (original == 0.0) {
/* there is no sensible representation of a relative
change from -inf dB, so return an empty string.
*/
return "";
} else if (fraction == 0.0) {
snprintf (buf, sizeof (buf), "-inf");
} else {
double old_db = accurate_coefficient_to_dB (slider_position_to_gain_with_max (original, Config->get_max_gain()));
double new_db = accurate_coefficient_to_dB (slider_position_to_gain_with_max (fraction, Config->get_max_gain()));
snprintf (buf, sizeof (buf), "%.1f", new_db - old_db);
}
} else {
view_to_model_coord_y (original);
view_to_model_coord_y (fraction);
if (EventTypeMap::instance().is_integer (alist->parameter())) {
snprintf (buf, sizeof (buf), "%d", (int)fraction - (int)original);
} else {
snprintf (buf, sizeof (buf), "%.2f", fraction - original);
}
}
return buf;
}
/**
* @param s Value string in the form as returned by fraction_to_string.
* @return Corresponding y fraction.
*/
double
AutomationLine::string_to_fraction (string const & s) const
{
if (s == "-inf") {
return 0;
}
double v;
sscanf (s.c_str(), "%lf", &v);
if (_uses_gain_mapping) {
v = gain_to_slider_position_with_max (dB_to_coefficient (v), Config->get_max_gain());
} else {
double dummy = 0.0;
model_to_view_coord (dummy, v);
}
return v;
}
/** Start dragging a single point, possibly adding others if the supplied point is selected and there
* are other selected points.
*
* @param cp Point to drag.
* @param x Initial x position (units).
* @param fraction Initial y position (as a fraction of the track height, where 0 is the bottom and 1 the top)
*/
void
AutomationLine::start_drag_single (ControlPoint* cp, double x, float fraction)
{
trackview.editor().session()->begin_reversible_command (_("automation event move"));
trackview.editor().session()->add_command (
new MementoCommand<AutomationList> (memento_command_binder(), &get_state(), 0));
_drag_points.clear ();
_drag_points.push_back (cp);
if (cp->get_selected ()) {
for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
if (*i != cp && (*i)->get_selected()) {
_drag_points.push_back (*i);
}
}
}
start_drag_common (x, fraction);
}
/** Start dragging a line vertically (with no change in x)
* @param i1 Control point index of the `left' point on the line.
* @param i2 Control point index of the `right' point on the line.
* @param fraction Initial y position (as a fraction of the track height, where 0 is the bottom and 1 the top)
*/
void
AutomationLine::start_drag_line (uint32_t i1, uint32_t i2, float fraction)
{
trackview.editor().session()->begin_reversible_command (_("automation range move"));
trackview.editor().session()->add_command (
new MementoCommand<AutomationList> (memento_command_binder (), &get_state(), 0));
_drag_points.clear ();
for (uint32_t i = i1; i <= i2; i++) {
_drag_points.push_back (nth (i));
}
start_drag_common (0, fraction);
}
/** Start dragging multiple points (with no change in x)
* @param cp Points to drag.
* @param fraction Initial y position (as a fraction of the track height, where 0 is the bottom and 1 the top)
*/
void
AutomationLine::start_drag_multiple (list<ControlPoint*> cp, float fraction, XMLNode* state)
{
trackview.editor().session()->begin_reversible_command (_("automation range move"));
trackview.editor().session()->add_command (
new MementoCommand<AutomationList> (memento_command_binder(), state, 0));
_drag_points = cp;
start_drag_common (0, fraction);
}
struct ControlPointSorter
{
bool operator() (ControlPoint const * a, ControlPoint const * b) const {
if (floateq (a->get_x(), b->get_x(), 1)) {
return a->view_index() < b->view_index();
}
return a->get_x() < b->get_x();
}
};
AutomationLine::ContiguousControlPoints::ContiguousControlPoints (AutomationLine& al)
: line (al), before_x (0), after_x (DBL_MAX)
{
}
void
AutomationLine::ContiguousControlPoints::compute_x_bounds (PublicEditor& e)
{
uint32_t sz = size();
if (sz > 0 && sz < line.npoints()) {
const TempoMap& map (e.session()->tempo_map());
/* determine the limits on x-axis motion for this
contiguous range of control points
*/
if (front()->view_index() > 0) {
before_x = line.nth (front()->view_index() - 1)->get_x();
const framepos_t pos = e.pixel_to_sample(before_x);
const Meter& meter = map.meter_at (pos);
const framecnt_t len = ceil (meter.frames_per_bar (map.tempo_at (pos), e.session()->frame_rate())
/ (Timecode::BBT_Time::ticks_per_beat * meter.divisions_per_bar()) );
const double one_tick_in_pixels = e.sample_to_pixel_unrounded (len);
before_x += one_tick_in_pixels;
}
/* if our last point has a point after it in the line,
we have an "after" bound
*/
if (back()->view_index() < (line.npoints() - 1)) {
after_x = line.nth (back()->view_index() + 1)->get_x();
const framepos_t pos = e.pixel_to_sample(after_x);
const Meter& meter = map.meter_at (pos);
const framecnt_t len = ceil (meter.frames_per_bar (map.tempo_at (pos), e.session()->frame_rate())
/ (Timecode::BBT_Time::ticks_per_beat * meter.divisions_per_bar()));
const double one_tick_in_pixels = e.sample_to_pixel_unrounded (len);
after_x -= one_tick_in_pixels;
}
}
}
double
AutomationLine::ContiguousControlPoints::clamp_dx (double dx)
{
if (empty()) {
return dx;
}
/* get the maximum distance we can move any of these points along the x-axis
*/
double tx; /* possible position a point would move to, given dx */
ControlPoint* cp;
if (dx > 0) {
/* check the last point, since we're moving later in time */
cp = back();
} else {
/* check the first point, since we're moving earlier in time */
cp = front();
}
tx = cp->get_x() + dx; // new possible position if we just add the motion
tx = max (tx, before_x); // can't move later than following point
tx = min (tx, after_x); // can't move earlier than preceeding point
return tx - cp->get_x ();
}
void
AutomationLine::ContiguousControlPoints::move (double dx, double dy)
{
for (std::list<ControlPoint*>::iterator i = begin(); i != end(); ++i) {
(*i)->move_to ((*i)->get_x() + dx, (*i)->get_y() - line.height() * dy, ControlPoint::Full);
line.reset_line_coords (**i);
}
}
/** Common parts of starting a drag.
* @param x Starting x position in units, or 0 if x is being ignored.
* @param fraction Starting y position (as a fraction of the track height, where 0 is the bottom and 1 the top)
*/
void
AutomationLine::start_drag_common (double x, float fraction)
{
_drag_x = x;
_drag_distance = 0;
_last_drag_fraction = fraction;
_drag_had_movement = false;
did_push = false;
/* they are probably ordered already, but we have to make sure */
_drag_points.sort (ControlPointSorter());
}
/** Should be called to indicate motion during a drag.
* @param x New x position of the drag in canvas units, or undefined if ignore_x == true.
* @param fraction New y fraction.
* @return x position and y fraction that were actually used (once clamped).
*/
pair<double, float>
AutomationLine::drag_motion (double const x, float fraction, bool ignore_x, bool with_push, uint32_t& final_index)
{
if (_drag_points.empty()) {
return pair<double,float> (x,fraction);
}
double dx = ignore_x ? 0 : (x - _drag_x);
double dy = fraction - _last_drag_fraction;
if (!_drag_had_movement) {
/* "first move" ... do some stuff that we don't want to do if
no motion ever took place, but need to do before we handle
motion.
*/
/* partition the points we are dragging into (potentially several)
* set(s) of contiguous points. this will not happen with a normal
* drag, but if the user does a discontiguous selection, it can.
*/
uint32_t expected_view_index = 0;
CCP contig;
for (list<ControlPoint*>::iterator i = _drag_points.begin(); i != _drag_points.end(); ++i) {
if (i == _drag_points.begin() || (*i)->view_index() != expected_view_index) {
contig.reset (new ContiguousControlPoints (*this));
contiguous_points.push_back (contig);
}
contig->push_back (*i);
expected_view_index = (*i)->view_index() + 1;
}
if (contiguous_points.back()->empty()) {
contiguous_points.pop_back ();
}
for (vector<CCP>::iterator ccp = contiguous_points.begin(); ccp != contiguous_points.end(); ++ccp) {
(*ccp)->compute_x_bounds (trackview.editor());
}
}
/* OK, now on to the stuff related to *this* motion event. First, for
* each contiguous range, figure out the maximum x-axis motion we are
* allowed (because of neighbouring points that are not moving.
*
* if we are moving forwards with push, we don't need to do this,
* since all later points will move too.
*/
if (dx < 0 || ((dx > 0) && !with_push)) {
for (vector<CCP>::iterator ccp = contiguous_points.begin(); ccp != contiguous_points.end(); ++ccp) {
double dxt = (*ccp)->clamp_dx (dx);
if (fabs (dxt) < fabs (dx)) {
dx = dxt;
}
}
}
/* clamp y */
for (list<ControlPoint*>::iterator i = _drag_points.begin(); i != _drag_points.end(); ++i) {
double const y = ((_height - (*i)->get_y()) / _height) + dy;
if (y < 0) {
dy -= y;
}
if (y > 1) {
dy -= (y - 1);
}
}
if (dx || dy) {
/* and now move each section */
for (vector<CCP>::iterator ccp = contiguous_points.begin(); ccp != contiguous_points.end(); ++ccp) {
(*ccp)->move (dx, dy);
}
if (with_push) {
final_index = contiguous_points.back()->back()->view_index () + 1;
ControlPoint* p;
uint32_t i = final_index;
while ((p = nth (i)) != 0 && p->can_slide()) {
p->move_to (p->get_x() + dx, p->get_y(), ControlPoint::Full);
reset_line_coords (*p);
++i;
}
}
/* update actual line coordinates (will queue a redraw)
*/
if (line_points.size() > 1) {
line->set (line_points);
}
}
_drag_distance += dx;
_drag_x += dx;
_last_drag_fraction = fraction;
_drag_had_movement = true;
did_push = with_push;
return pair<double, float> (_drag_x + dx, _last_drag_fraction + dy);
}
/** Should be called to indicate the end of a drag */
void
AutomationLine::end_drag (bool with_push, uint32_t final_index)
{
if (!_drag_had_movement) {
return;
}
alist->freeze ();
sync_model_with_view_points (_drag_points);
if (with_push) {
ControlPoint* p;
uint32_t i = final_index;
while ((p = nth (i)) != 0 && p->can_slide()) {
sync_model_with_view_point (*p);
++i;
}
}
alist->thaw ();
update_pending = false;
trackview.editor().session()->add_command (
new MementoCommand<AutomationList>(memento_command_binder (), 0, &alist->get_state()));
trackview.editor().session()->set_dirty ();
did_push = false;
contiguous_points.clear ();
}
void
AutomationLine::sync_model_with_view_point (ControlPoint& cp)
{
/* find out where the visual control point is.
initial results are in canvas units. ask the
line to convert them to something relevant.
*/
double view_x = cp.get_x();
double view_y = 1.0 - (cp.get_y() / _height);
/* if xval has not changed, set it directly from the model to avoid rounding errors */
if (view_x == trackview.editor().sample_to_pixel_unrounded (_time_converter->to ((*cp.model())->when)) - _offset) {
view_x = (*cp.model())->when - _offset;
} else {
view_x = trackview.editor().pixel_to_sample (view_x);
view_x = _time_converter->from (view_x + _offset);
}
update_pending = true;
view_to_model_coord_y (view_y);
alist->modify (cp.model(), view_x, view_y);
}
bool
AutomationLine::control_points_adjacent (double xval, uint32_t & before, uint32_t& after)
{
ControlPoint *bcp = 0;
ControlPoint *acp = 0;
double unit_xval;
unit_xval = trackview.editor().sample_to_pixel_unrounded (xval);
for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
if ((*i)->get_x() <= unit_xval) {
if (!bcp || (*i)->get_x() > bcp->get_x()) {
bcp = *i;
before = bcp->view_index();
}
} else if ((*i)->get_x() > unit_xval) {
acp = *i;
after = acp->view_index();
break;
}
}
return bcp && acp;
}
bool
AutomationLine::is_last_point (ControlPoint& cp)
{
// If the list is not empty, and the point is the last point in the list
if (alist->empty()) {
return false;
}
AutomationList::const_iterator i = alist->end();
--i;
if (cp.model() == i) {
return true;
}
return false;
}
bool
AutomationLine::is_first_point (ControlPoint& cp)
{
// If the list is not empty, and the point is the first point in the list
if (!alist->empty() && cp.model() == alist->begin()) {
return true;
}
return false;
}
// This is copied into AudioRegionGainLine
void
AutomationLine::remove_point (ControlPoint& cp)
{
trackview.editor().session()->begin_reversible_command (_("remove control point"));
XMLNode &before = alist->get_state();
alist->erase (cp.model());
trackview.editor().session()->add_command(
new MementoCommand<AutomationList> (memento_command_binder (), &before, &alist->get_state()));
trackview.editor().session()->commit_reversible_command ();
trackview.editor().session()->set_dirty ();
}
/** Get selectable points within an area.
* @param start Start position in session frames.
* @param end End position in session frames.
* @param bot Bottom y range, as a fraction of line height, where 0 is the bottom of the line.
* @param top Top y range, as a fraction of line height, where 0 is the bottom of the line.
* @param result Filled in with selectable things; in this case, ControlPoints.
*/
void
AutomationLine::get_selectables (framepos_t start, framepos_t end, double botfrac, double topfrac, list<Selectable*>& results)
{
/* convert fractions to display coordinates with 0 at the top of the track */
double const bot_track = (1 - topfrac) * trackview.current_height ();
double const top_track = (1 - botfrac) * trackview.current_height ();
for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
double const model_when = (*(*i)->model())->when;
/* model_when is relative to the start of the source, so we just need to add on the origin_b here
(as it is the session frame position of the start of the source)
*/
framepos_t const session_frames_when = _time_converter->to (model_when) + _time_converter->origin_b ();
if (session_frames_when >= start && session_frames_when <= end && (*i)->get_y() >= bot_track && (*i)->get_y() <= top_track) {
results.push_back (*i);
}
}
}
void
AutomationLine::get_inverted_selectables (Selection&, list<Selectable*>& /*results*/)
{
// hmmm ....
}
void
AutomationLine::set_selected_points (PointSelection const & points)
{
for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
(*i)->set_selected (false);
}
for (PointSelection::const_iterator i = points.begin(); i != points.end(); ++i) {
(*i)->set_selected (true);
}
set_colors ();
}
void AutomationLine::set_colors ()
{
set_line_color (ARDOUR_UI::config()->get_canvasvar_AutomationLine());
for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
(*i)->set_color ();
}
}
void
AutomationLine::list_changed ()
{
DEBUG_TRACE (DEBUG::Automation, string_compose ("\tline changed, existing update pending? %1\n", update_pending));
if (!update_pending) {
update_pending = true;
Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&AutomationLine::queue_reset, this));
}
}
void
AutomationLine::reset_callback (const Evoral::ControlList& events)
{
uint32_t vp = 0;
uint32_t pi = 0;
uint32_t np;
if (events.empty()) {
for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
delete *i;
}
control_points.clear ();
line->hide();
return;
}
/* hide all existing points, and the line */
for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
(*i)->hide();
}
line->hide ();
np = events.size();
Evoral::ControlList& e = const_cast<Evoral::ControlList&> (events);
for (AutomationList::iterator ai = e.begin(); ai != e.end(); ++ai, ++pi) {
double tx = (*ai)->when;
double ty = (*ai)->value;
/* convert from model coordinates to canonical view coordinates */
model_to_view_coord (tx, ty);
if (isnan (tx) || isnan (ty)) {
warning << string_compose (_("Ignoring illegal points on AutomationLine \"%1\""),
_name) << endmsg;
continue;
}
if (tx >= max_framepos || tx < 0 || tx >= _maximum_time) {
continue;
}
/* convert x-coordinate to a canvas unit coordinate (this takes
* zoom and scroll into account).
*/
tx = trackview.editor().sample_to_pixel_unrounded (tx);
/* convert from canonical view height (0..1.0) to actual
* height coordinates (using X11's top-left rooted system)
*/
ty = _height - (ty * _height);
add_visible_control_point (vp, pi, tx, ty, ai, np);
vp++;
}
/* discard extra CP's to avoid confusing ourselves */
while (control_points.size() > vp) {
ControlPoint* cp = control_points.back();
control_points.pop_back ();
delete cp;
}
if (!terminal_points_can_slide) {
control_points.back()->set_can_slide(false);
}
if (vp > 1) {
/* reset the line coordinates given to the CanvasLine */
while (line_points.size() < vp) {
line_points.push_back (ArdourCanvas::Duple (0,0));
}
while (line_points.size() > vp) {
line_points.pop_back ();
}
for (uint32_t n = 0; n < vp; ++n) {
line_points[n].x = control_points[n]->get_x();
line_points[n].y = control_points[n]->get_y();
}
line->set (line_points);
update_visibility ();
}
set_selected_points (trackview.editor().get_selection().points);
}
void
AutomationLine::reset ()
{
DEBUG_TRACE (DEBUG::Automation, "\t\tLINE RESET\n");
update_pending = false;
have_timeout = false;
if (no_draw) {
return;
}
alist->apply_to_points (*this, &AutomationLine::reset_callback);
}
void
AutomationLine::queue_reset ()
{
/* this must be called from the GUI thread
*/
if (trackview.editor().session()->transport_rolling() && alist->automation_write()) {
/* automation write pass ... defer to a timeout */
/* redraw in 1/4 second */
if (!have_timeout) {
DEBUG_TRACE (DEBUG::Automation, "\tqueue timeout\n");
Glib::signal_timeout().connect (sigc::bind_return (sigc::mem_fun (*this, &AutomationLine::reset), false), 250);
have_timeout = true;
} else {
DEBUG_TRACE (DEBUG::Automation, "\ttimeout already queued, change ignored\n");
}
} else {
reset ();
}
}
void
AutomationLine::clear ()
{
/* parent must create and commit command */
XMLNode &before = alist->get_state();
alist->clear();
trackview.editor().session()->add_command (
new MementoCommand<AutomationList> (memento_command_binder (), &before, &alist->get_state()));
}
void
AutomationLine::change_model (AutomationList::iterator /*i*/, double /*x*/, double /*y*/)
{
}
void
AutomationLine::set_list (boost::shared_ptr<ARDOUR::AutomationList> list)
{
alist = list;
queue_reset ();
connect_to_list ();
}
void
AutomationLine::add_visibility (VisibleAspects va)
{
VisibleAspects old = _visible;
_visible = VisibleAspects (_visible | va);
if (old != _visible) {
update_visibility ();
}
}
void
AutomationLine::set_visibility (VisibleAspects va)
{
if (_visible != va) {
_visible = va;
update_visibility ();
}
}
void
AutomationLine::remove_visibility (VisibleAspects va)
{
VisibleAspects old = _visible;
_visible = VisibleAspects (_visible & ~va);
if (old != _visible) {
update_visibility ();
}
}
void
AutomationLine::track_entered()
{
if (alist->interpolation() != AutomationList::Discrete) {
add_visibility (ControlPoints);
}
}
void
AutomationLine::track_exited()
{
if (alist->interpolation() != AutomationList::Discrete) {
remove_visibility (ControlPoints);
}
}
XMLNode &
AutomationLine::get_state (void)
{
/* function as a proxy for the model */
return alist->get_state();
}
int
AutomationLine::set_state (const XMLNode &node, int version)
{
/* function as a proxy for the model */
return alist->set_state (node, version);
}
void
AutomationLine::view_to_model_coord (double& x, double& y) const
{
x = _time_converter->from (x);
view_to_model_coord_y (y);
}
void
AutomationLine::view_to_model_coord_y (double& y) const
{
/* TODO: This should be more generic ... */
if (alist->parameter().type() == GainAutomation ||
alist->parameter().type() == EnvelopeAutomation) {
y = slider_position_to_gain_with_max (y, Config->get_max_gain());
y = max (0.0, y);
y = min (2.0, y);
} else if (alist->parameter().type() == PanAzimuthAutomation ||
alist->parameter().type() == PanElevationAutomation) {
y = 1.0 - y;
} else if (alist->parameter().type() == PanWidthAutomation) {
y = 2.0 * y - 1.0;
} else if (alist->parameter().type() == PluginAutomation) {
y = y * (double)(alist->get_max_y()- alist->get_min_y()) + alist->get_min_y();
} else {
y = rint (y * alist->parameter().max());
}
}
void
AutomationLine::model_to_view_coord (double& x, double& y) const
{
/* TODO: This should be more generic ... */
if (alist->parameter().type() == GainAutomation ||
alist->parameter().type() == EnvelopeAutomation) {
y = gain_to_slider_position_with_max (y, Config->get_max_gain());
} else if (alist->parameter().type() == PanAzimuthAutomation ||
alist->parameter().type() == PanElevationAutomation) {
y = 1.0 - y;
} else if (alist->parameter().type() == PanWidthAutomation) {
y = .5 + y * .5;
} else if (alist->parameter().type() == PluginAutomation) {
y = (y - alist->get_min_y()) / (double)(alist->get_max_y()- alist->get_min_y());
} else {
y = y / (double)alist->parameter().max(); /* ... like this */
}
x = _time_converter->to (x) - _offset;
}
/** Called when our list has announced that its interpolation style has changed */
void
AutomationLine::interpolation_changed (AutomationList::InterpolationStyle style)
{
if (style == AutomationList::Discrete) {
set_visibility (ControlPoints);
line->hide();
} else {
set_visibility (Line);
}
}
void
AutomationLine::add_visible_control_point (uint32_t view_index, uint32_t pi, double tx, double ty,
AutomationList::iterator model, uint32_t npoints)
{
ControlPoint::ShapeType shape;
if (view_index >= control_points.size()) {
/* make sure we have enough control points */
ControlPoint* ncp = new ControlPoint (*this);
ncp->set_size (control_point_box_size ());
control_points.push_back (ncp);
}
if (!terminal_points_can_slide) {
if (pi == 0) {
control_points[view_index]->set_can_slide (false);
if (tx == 0) {
shape = ControlPoint::Start;
} else {
shape = ControlPoint::Full;
}
} else if (pi == npoints - 1) {
control_points[view_index]->set_can_slide (false);
shape = ControlPoint::End;
} else {
control_points[view_index]->set_can_slide (true);
shape = ControlPoint::Full;
}
} else {
control_points[view_index]->set_can_slide (true);
shape = ControlPoint::Full;
}
control_points[view_index]->reset (tx, ty, model, view_index, shape);
/* finally, control visibility */
if (_visible & ControlPoints) {
control_points[view_index]->show ();
} else {
control_points[view_index]->hide ();
}
}
void
AutomationLine::connect_to_list ()
{
_list_connections.drop_connections ();
alist->StateChanged.connect (_list_connections, invalidator (*this), boost::bind (&AutomationLine::list_changed, this), gui_context());
alist->InterpolationChanged.connect (
_list_connections, invalidator (*this), boost::bind (&AutomationLine::interpolation_changed, this, _1), gui_context());
}
MementoCommandBinder<AutomationList>*
AutomationLine::memento_command_binder ()
{
return new SimpleMementoCommandBinder<AutomationList> (*alist.get());
}
/** Set the maximum time that points on this line can be at, relative
* to the start of the track or region that it is on.
*/
void
AutomationLine::set_maximum_time (framecnt_t t)
{
if (_maximum_time == t) {
return;
}
_maximum_time = t;
reset ();
}
/** @return min and max x positions of points that are in the list, in session frames */
pair<framepos_t, framepos_t>
AutomationLine::get_point_x_range () const
{
pair<framepos_t, framepos_t> r (max_framepos, 0);
for (AutomationList::const_iterator i = the_list()->begin(); i != the_list()->end(); ++i) {
r.first = min (r.first, session_position (i));
r.second = max (r.second, session_position (i));
}
return r;
}
framepos_t
AutomationLine::session_position (AutomationList::const_iterator p) const
{
return _time_converter->to ((*p)->when) + _offset + _time_converter->origin_b ();
}
void
AutomationLine::set_offset (framepos_t off)
{
if (_offset == off) {
return;
}
_offset = off;
reset ();
}
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