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#include <sigc++/bind.h>
#include "ardour/tempo.h"
#include "canvas/rectangle.h"
#include "canvas/container.h"
#include "canvas/curve.h"
#include "canvas/canvas.h"
#include "canvas/debug.h"
#include "ui_config.h"
#include "tempo_curve.h"
#include "public_editor.h"
#include "utils.h"
#include "rgb_macros.h"
#include <gtkmm2ext/utils.h>
#include "pbd/i18n.h"
PBD::Signal1<void,TempoCurve*> TempoCurve::CatchDeletion;
static double curve_height = 13.0;
void TempoCurve::setup_sizes(const double timebar_height)
{
curve_height = floor (timebar_height) - 2.5;
}
/* ignores Tempo note type - only note_types_per_minute is potentially curved */
TempoCurve::TempoCurve (PublicEditor& ed, ArdourCanvas::Container& parent, guint32 rgba, ARDOUR::TempoSection& temp, framepos_t frame, bool handle_events)
: editor (ed)
, _parent (&parent)
, _curve (0)
, _shown (false)
, _color (rgba)
, _min_tempo (temp.note_types_per_minute())
, _max_tempo (temp.note_types_per_minute())
, _tempo (temp)
{
frame_position = frame;
unit_position = editor.sample_to_pixel (frame);
group = new ArdourCanvas::Container (&parent, ArdourCanvas::Duple (unit_position, 1));
#ifdef CANVAS_DEBUG
group->name = string_compose ("TempoCurve::group for %1", _tempo.note_types_per_minute());
#endif
_curve = new ArdourCanvas::FramedCurve (group);
#ifdef CANVAS_DEBUG
_curve->name = string_compose ("TempoCurve::curve for %1", _tempo.note_types_per_minute());
#endif
_curve->set_points_per_segment (3);
points = new ArdourCanvas::Points ();
_curve->set (*points);
set_color_rgba (rgba);
editor.ZoomChanged.connect (sigc::mem_fun (*this, &TempoCurve::reposition));
/* events will be handled by both the group and the mark itself, so
* make sure they can both be used to lookup this object.
*/
_curve->set_data ("tempo curve", this);
if (handle_events) {
//group->Event.connect (sigc::bind (sigc::mem_fun (editor, &PublicEditor::canvas_marker_event), group, this));
}
_curve->Event.connect (sigc::bind (sigc::mem_fun (editor, &PublicEditor::canvas_tempo_curve_event), _curve, this));
}
TempoCurve::~TempoCurve ()
{
CatchDeletion (this); /* EMIT SIGNAL */
/* destroying the parent group destroys its contents, namely any polygons etc. that we added */
delete group;
}
void TempoCurve::reparent(ArdourCanvas::Container & parent)
{
group->reparent (&parent);
_parent = &parent;
}
void
TempoCurve::canvas_height_set (double h)
{
_canvas_height = h;
}
ArdourCanvas::Item&
TempoCurve::the_item() const
{
return *group;
}
void
TempoCurve::set_position (framepos_t frame, framepos_t end_frame)
{
unit_position = editor.sample_to_pixel (frame);
group->set_x_position (unit_position);
frame_position = frame;
_end_frame = end_frame;
points->clear();
points = new ArdourCanvas::Points ();
points->push_back (ArdourCanvas::Duple (0.0, curve_height));
if (end_frame == (framepos_t) UINT32_MAX) {
const double tempo_at = _tempo.note_types_per_minute();
const double y_pos = (curve_height) - (((tempo_at - _min_tempo) / (_max_tempo - _min_tempo)) * curve_height);
points->push_back (ArdourCanvas::Duple (0.0, y_pos));
points->push_back (ArdourCanvas::Duple (ArdourCanvas::COORD_MAX - 5.0, y_pos));
} else if (_tempo.type() == ARDOUR::TempoSection::Constant) {
const double tempo_at = _tempo.note_types_per_minute();
const double y_pos = (curve_height) - (((tempo_at - _min_tempo) / (_max_tempo - _min_tempo)) * curve_height);
points->push_back (ArdourCanvas::Duple (0.0, y_pos));
points->push_back (ArdourCanvas::Duple (editor.sample_to_pixel (end_frame - frame), y_pos));
} else {
const framepos_t frame_step = max ((end_frame - frame) / 5, (framepos_t) 1);
framepos_t current_frame = frame;
while (current_frame < (end_frame - frame_step)) {
const double tempo_at = _tempo.tempo_at_minute (_tempo.minute_at_frame (current_frame)).note_types_per_minute();
const double y_pos = max ((curve_height) - (((tempo_at - _min_tempo) / (_max_tempo - _min_tempo)) * curve_height), 0.0);
points->push_back (ArdourCanvas::Duple (editor.sample_to_pixel (current_frame - frame), min (y_pos, curve_height)));
current_frame += frame_step;
}
const double tempo_at = _tempo.tempo_at_minute (_tempo.minute_at_frame (end_frame)).note_types_per_minute();
const double y_pos = max ((curve_height) - (((tempo_at - _min_tempo) / (_max_tempo - _min_tempo)) * curve_height), 0.0);
points->push_back (ArdourCanvas::Duple (editor.sample_to_pixel ((end_frame - 1) - frame), min (y_pos, curve_height)));
}
_curve->set (*points);
}
void
TempoCurve::reposition ()
{
set_position (frame_position, _end_frame);
}
void
TempoCurve::show ()
{
_shown = true;
group->show ();
}
void
TempoCurve::hide ()
{
_shown = false;
group->hide ();
}
void
TempoCurve::set_color_rgba (uint32_t c)
{
_color = c;
_curve->set_fill_color (UIConfiguration::instance().color_mod ("tempo curve", "selection rect"));
_curve->set_outline_color (_color);
}
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