audio_region_view.h

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/*
 * Copyright (C) 2006-2014 David Robillard <d@drobilla.net>
 * Copyright (C) 2007-2012 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2007 Doug McLain <doug@nostar.net>
 * Copyright (C) 2008-2017 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2012 Ben Loftis <ben@harrisonconsoles.com>
 * Copyright (C) 2014-2019 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.
 */
 
#pragma once
 
#ifdef interface
#undef interface
#endif
 
#include <vector>
 
#include <sigc++/signal.h>
#include "ardour/audioregion.h"
 
#include "canvas/fwd.h"
#include "canvas/xfade_curve.h"
 
#include "waveview/wave_view.h"
 
#include "line_merger.h"
#include "region_view.h"
#include "time_axis_view_item.h"
#include "editor_automation_line.h"
#include "enums.h"
 
namespace ARDOUR {
        class AudioRegion;
        struct PeakData;
};
 
class AudioTimeAxisView;
class GhostRegion;
class AutomationTimeAxisView;
class RegionFxLine;
class RouteTimeAxisView;
class PasteContext;
 
class AudioRegionView : public RegionView, public LineMerger
{
public:
        AudioRegionView (ArdourCanvas::Container *,
                         RouteTimeAxisView&,
                         std::shared_ptr<ARDOUR::AudioRegion>,
                         double initial_samples_per_pixel,
                         uint32_t base_color);
 
        AudioRegionView (ArdourCanvas::Container *,
                         RouteTimeAxisView&,
                         std::shared_ptr<ARDOUR::AudioRegion>,
                         double samples_per_pixel,
                         uint32_t base_color,
                         bool recording,
                         TimeAxisViewItem::Visibility);
 
        AudioRegionView (const AudioRegionView& other, std::shared_ptr<ARDOUR::AudioRegion>);
 
        ~AudioRegionView ();
 
        void init (bool wait_for_data);
 
        std::shared_ptr<ARDOUR::AudioRegion> audio_region() const;
 
        void create_waves ();
        void delete_waves ();
 
        void set_height (double);
        void set_samples_per_pixel (double);
 
        void set_amplitude_above_axis (gdouble spp);
 
        void temporarily_hide_envelope (); 
        void unhide_envelope ();           
 
        void set_region_gain_line ();
        void set_ignore_line_change (bool v) { _ignore_line_change = v; };
        bool set_region_fx_line (uint32_t, uint32_t);
        bool set_region_fx_line (std::weak_ptr<PBD::Controllable>);
        bool get_region_fx_line (PBD::ID&, uint32_t&);
        void update_envelope_visibility ();
        bool paste (Temporal::timepos_t const&, const Selection&, PasteContext&);
 
        sigc::signal<void> region_line_changed;
 
        void add_gain_point_event (ArdourCanvas::Item *item, GdkEvent *event, bool with_guard_points);
 
        std::shared_ptr<RegionFxLine> fx_line() const { return _fx_line; }
 
        void region_changed (const PBD::PropertyChange&);
        void envelope_active_changed ();
 
        GhostRegion* add_ghost (TimeAxisView&);
 
        void reset_fade_in_shape_width (std::shared_ptr<ARDOUR::AudioRegion> ar, samplecnt_t, bool drag_active = false);
        void reset_fade_out_shape_width (std::shared_ptr<ARDOUR::AudioRegion> ar, samplecnt_t, bool drag_active = false);
 
        samplepos_t get_fade_in_shape_width ();
        samplepos_t get_fade_out_shape_width ();
 
        void set_fade_visibility (bool);
        void update_coverage_frame (LayerDisplay);
 
        void update_transient(float old_pos, float new_pos);
        void remove_transient(float pos);
 
        void     set_frame_color ();
        uint32_t get_fill_color () const;
 
        virtual void entered ();
        virtual void exited ();
 
        void thaw_after_trim ();
 
        void drag_start ();
        void drag_end ();
 
        void redraw_start_xfade_to (std::shared_ptr<ARDOUR::AudioRegion>, samplecnt_t, ArdourCanvas::Points&, double, double);
        void redraw_end_xfade_to (std::shared_ptr<ARDOUR::AudioRegion>, samplecnt_t, ArdourCanvas::Points&, double, double, double);
        void redraw_start_xfade ();
        void redraw_end_xfade ();
 
        void hide_xfades ();
        void hide_start_xfade ();
        void hide_end_xfade ();
        void show_xfades ();
        void show_start_xfade ();
        void show_end_xfade ();
 
        bool start_xfade_visible () const {
                return _start_xfade_visible;
        }
 
        bool end_xfade_visible () const {
                return _end_xfade_visible;
        }
 
        MergeableLine* make_merger();
 
protected:
 
        /* this constructor allows derived types
         * to specify their visibility requirements
         * to the TimeAxisViewItem parent class
         */
 
        enum Flags {
                WaveformVisible = 0x4,
                WaveformRectified = 0x8,
                WaveformLogScaled = 0x10,
        };
 
        std::vector<ArdourWaveView::WaveView *> waves;
        std::vector<ArdourWaveView::WaveView *> tmp_waves; 
 
        std::list<std::pair<samplepos_t, ArdourCanvas::Line*> > feature_lines;
 
        ArdourCanvas::Rectangle*        fade_in_handle; 
        ArdourCanvas::Rectangle*        fade_out_handle; 
        ArdourCanvas::Rectangle*        fade_in_trim_handle; 
        ArdourCanvas::Rectangle*        fade_out_trim_handle; 
        ArdourCanvas::Rectangle*        pending_peak_data;
 
        static Cairo::RefPtr<Cairo::Pattern> pending_peak_pattern;
 
        ArdourCanvas::XFadeCurve* start_xfade_curve;
        ArdourCanvas::Rectangle*  start_xfade_rect;
        bool _start_xfade_visible;
 
        ArdourCanvas::XFadeCurve* end_xfade_curve;
        ArdourCanvas::Rectangle*  end_xfade_rect;
        bool _end_xfade_visible;
 
        std::shared_ptr<RegionFxLine> _fx_line;
 
        double _amplitude_above_axis;
 
        void reset_fade_shapes ();
        void reset_fade_in_shape ();
        void reset_fade_out_shape ();
        void fade_in_changed ();
        void fade_out_changed ();
        void fade_in_active_changed ();
        void fade_out_active_changed ();
 
        void region_resized (const PBD::PropertyChange&);
        void region_muted ();
        void region_scale_amplitude_changed ();
        void region_renamed ();
 
        void create_one_wave (uint32_t, bool);
        void peaks_ready_handler (uint32_t);
 
        void set_colors ();
        void set_waveform_colors ();
        void set_fx_line_colors ();
        void reset_width_dependent_items (double pixel_width);
 
        void color_handler ();
 
        void transients_changed();
 
        EditorAutomationLine::VisibleAspects automation_line_visibility () const;
        void redisplay (bool) {}
 
private:
        void setup_fade_handle_positions ();
 
        void parameter_changed (std::string const &);
        void setup_waveform_visibility ();
        void set_some_waveform_colors (std::vector<ArdourWaveView::WaveView*>& waves_to_color);
 
        std::vector<PBD::ScopedConnection*> _data_ready_connections;
 
        std::pair<std::list<AudioRegionView*>, std::list<AudioRegionView*> > _hidden_xfades;
 
        bool trim_fade_in_drag_active;
        bool trim_fade_out_drag_active;
 
        void set_region_fx_line (std::shared_ptr<ARDOUR::AutomationControl>, std::shared_ptr<ARDOUR::RegionFxPlugin>, uint32_t);
 
        PBD::ID  _rfx_id;
        uint32_t _rdx_param;
        bool     _ignore_line_change;
 
        PBD::ScopedConnection _region_fx_connection;
};