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livetrax/gtk2_ardour/tempo_curve.h
Paul Davis 0d89bc5789 fix height of tempo ruler curve elements
These were being drawn in a way that failed to really convey relative
tempos very well. This is now better, though perhaps there are other
improvements possible
2023-08-31 18:25:18 -06:00

93 lines
2.5 KiB
C++

/*
* Copyright (C) 2016-2017 Nick Mainsbridge <mainsbridge@gmail.com>
* Copyright (C) 2017-2019 Robin Gareus <robin@gareus.org>
*
* 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.
*/
#ifndef __gtk_ardour_tempo_curve_h__
#define __gtk_ardour_tempo_curve_h__
#include <string>
#include <glib.h>
#include <sigc++/signal.h>
#include "ardour/ardour.h"
#include "pbd/signals.h"
#include "canvas/types.h"
#include "canvas/framed_curve.h"
#include "canvas/text.h"
namespace Temporal {
class TempoPoint;
}
class PublicEditor;
class TempoCurve : public sigc::trackable
{
public:
TempoCurve (PublicEditor& editor, ArdourCanvas::Item &, guint32 rgba, Temporal::TempoPoint const & temp, bool handle_events , ArdourCanvas::Distance marker_width);
~TempoCurve ();
static PBD::Signal1<void,TempoCurve*> CatchDeletion;
static void setup_sizes (const double timebar_height);
ArdourCanvas::Item& the_item() const;
void set_duration (ARDOUR::samplecnt_t duration);
void set_color_rgba (uint32_t rgba);
void hide ();
void show ();
Temporal::TempoPoint const & tempo () const { return *_tempo; }
void reset_point (Temporal::TempoPoint const &);
void update_range (double min, double max) { _max_tempo = max; _min_tempo = min; }
static void format_tempo (double ntpm, int nt, char*, size_t);
protected:
PublicEditor& editor;
ArdourCanvas::Item* _parent;
ArdourCanvas::Container* group;
ArdourCanvas::Points points;
ArdourCanvas::FramedCurve* _curve;
ARDOUR::samplecnt_t _duration;
ArdourCanvas::Distance _marker_width;
uint32_t _color;
void reposition ();
private:
/* disallow copy construction */
TempoCurve (TempoCurve const &);
TempoCurve & operator= (TempoCurve const &);
double _min_tempo;
double _max_tempo;
Temporal::TempoPoint const * _tempo;
ArdourCanvas::Text* _start_text;
ArdourCanvas::Text* _end_text;
};
#endif /* __gtk_ardour_tempo_curve_h__ */