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livetrax/gtk2_ardour/audio_clip_editor.h

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/*
* Copyright (C) 2021 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2021 Ben Loftis <ben@harrisonconsoles.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.
*/
#ifndef __audio_region_trimmer_box_h__
#define __audio_region_trimmer_box_h__
#include <map>
#include <gtkmm/box.h>
#include <gtkmm/label.h>
#include <gtkmm/table.h>
#include "ardour/ardour.h"
#include "ardour/session_handle.h"
#include "ardour/triggerbox.h"
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#include "ardour/types.h"
#include "gtkmm2ext/actions.h"
#include "gtkmm2ext/bindings.h"
#include "gtkmm2ext/cairo_packer.h"
#include "widgets/ardour_button.h"
#include "canvas/canvas.h"
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#include "canvas/container.h"
#include "canvas/line.h"
#include "canvas/rectangle.h"
#include "canvas/ruler.h"
#include "canvas/scroll_group.h"
#include "audio_clock.h"
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namespace ARDOUR
{
class Session;
class Location;
class Trigger;
}
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namespace ArdourCanvas
{
class Text;
class Polygon;
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}
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namespace ArdourWaveView
{
class WaveView;
}
class ClipEditorBox : public Gtk::VBox, public ARDOUR::SessionHandlePtr
{
public:
ClipEditorBox () {}
~ClipEditorBox () {}
virtual void set_region (boost::shared_ptr<ARDOUR::Region>, ARDOUR::TriggerPtr) = 0;
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static void init ();
static void register_clip_editor_actions (Gtkmm2ext::Bindings*);
static Glib::RefPtr<Gtk::ActionGroup> clip_editor_actions;
};
class ClipEditor
{
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public:
virtual ~ClipEditor () {}
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virtual void zoom_in () = 0;
virtual void zoom_out () = 0;
};
class AudioClipEditor : public ArdourCanvas::GtkCanvas
{
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public:
AudioClipEditor ();
~AudioClipEditor ();
void set_region (boost::shared_ptr<ARDOUR::AudioRegion>, ARDOUR::TriggerPtr);
void on_size_allocate (Gtk::Allocation&);
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double sample_to_pixel (ARDOUR::samplepos_t);
samplepos_t pixel_to_sample (double);
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void set_spp (double);
double spp () const
{
return _spp;
}
bool key_press (GdkEventKey*);
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private:
ArdourCanvas::Rectangle* frame;
ArdourCanvas::ScrollGroup* waves_container;
ArdourCanvas::Container* line_container;
ArdourCanvas::Line* start_line;
ArdourCanvas::Line* end_line;
ArdourCanvas::Line* loop_line;
ArdourCanvas::Rectangle* scroll_bar_trough;
ArdourCanvas::Rectangle* scroll_bar_handle;
ArdourCanvas::Container* ruler_container;
ArdourCanvas::Ruler* ruler;
class ClipBBTMetric : public ArdourCanvas::Ruler::Metric
{
public:
ClipBBTMetric() : trigger (0) {
units_per_pixel = 1;
}
void set_trigger (ARDOUR::TriggerPtr t) { trigger = t; }
void get_marks (std::vector<ArdourCanvas::Ruler::Mark>& marks, int64_t lower, int64_t upper, int maxchars) const;
private:
ARDOUR::TriggerPtr trigger;
};
ClipBBTMetric* clip_metric;
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std::vector<ArdourWaveView::WaveView*> waves;
double non_wave_height;
samplepos_t left_origin;
double _spp;
double scroll_fraction;
boost::shared_ptr<ARDOUR::AudioRegion> audio_region;
void scroll_left ();
void scrol_right ();
enum LineType {
StartLine,
EndLine,
LoopLine,
};
bool event_handler (GdkEvent* ev);
bool line_event_handler (GdkEvent* ev, ArdourCanvas::Line*);
bool scroll_event_handler (GdkEvent* ev);
void drop_waves ();
void set_wave_heights ();
void set_spp_from_length (ARDOUR::samplecnt_t);
void set_waveform_colors ();
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void set_colors ();
void position_lines ();
void scroll_changed ();
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class LineDrag
{
public:
LineDrag (AudioClipEditor&, ArdourCanvas::Line&);
void begin (GdkEventButton*);
void end (GdkEventButton*);
void motion (GdkEventMotion*);
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private:
AudioClipEditor& editor;
ArdourCanvas::Line& line;
};
friend class LineDrag;
LineDrag* current_line_drag;
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class ScrollDrag
{
public:
ScrollDrag (AudioClipEditor&);
void begin (GdkEventButton*);
void end (GdkEventButton*);
void motion (GdkEventMotion*);
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private:
AudioClipEditor& editor;
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double last_x;
};
friend class ScrollDrag;
ScrollDrag* current_scroll_drag;
};
class AudioClipEditorBox : public ClipEditorBox
{
public:
AudioClipEditorBox ();
~AudioClipEditorBox ();
void set_region (boost::shared_ptr<ARDOUR::Region>, ARDOUR::TriggerPtr);
void region_changed (const PBD::PropertyChange& what_changed);
private:
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Gtk::HBox header_box;
ArdourWidgets::ArdourButton zoom_in_button;
ArdourWidgets::ArdourButton zoom_out_button;
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Gtk::Label _header_label;
Gtk::Table table;
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AudioClipEditor* editor;
PBD::ScopedConnection state_connection;
boost::shared_ptr<ARDOUR::Region> _region;
void zoom_in_click ();
void zoom_out_click ();
};
#endif /* __audio_region_trimmer_box_h__ */