gtk2_ardour/audio_region_view.h

   1 /*
   2     Copyright (C) 2001-2006 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17 */
  18
  19 #ifndef __gtk_ardour_audio_region_view_h__
  20 #define __gtk_ardour_audio_region_view_h__
  21
  22 #include <vector>
  23
  24 #include <libgnomecanvasmm.h>
  25 #include <libgnomecanvasmm/polygon.h>
  26 #include <sigc++/signal.h>
  27 #include "ardour/audioregion.h"
  28
  29 #include "region_view.h"
  30 #include "time_axis_view_item.h"
  31 #include "automation_line.h"
  32 #include "enums.h"
  33 #include "waveview.h"
  34 #include "canvas.h"
  35
  36 namespace ARDOUR {
  37         class AudioRegion;
  38         class PeakData;
  39 };
  40
  41 class AudioTimeAxisView;
  42 class AudioRegionGainLine;
  43 class GhostRegion;
  44 class AutomationTimeAxisView;
  45 class RouteTimeAxisView;
  46
  47 class AudioRegionView : public RegionView
  48 {
  49   public:
  50         AudioRegionView (ArdourCanvas::Group *,
  51                          RouteTimeAxisView&,
  52                          boost::shared_ptr<ARDOUR::AudioRegion>,
  53                          double initial_samples_per_unit,
  54                          Gdk::Color const & basic_color);
  55
  56         AudioRegionView (ArdourCanvas::Group *,
  57                          RouteTimeAxisView&,
  58                          boost::shared_ptr<ARDOUR::AudioRegion>,
  59                          double samples_per_unit,
  60                          Gdk::Color const & basic_color,
  61                          bool recording,
  62                          TimeAxisViewItem::Visibility);
  63
  64         AudioRegionView (const AudioRegionView& other);
  65         AudioRegionView (const AudioRegionView& other, boost::shared_ptr<ARDOUR::AudioRegion>);
  66
  67         ~AudioRegionView ();
  68
  69         virtual void init (Gdk::Color const & base_color, bool wait_for_data);
  70
  71         boost::shared_ptr<ARDOUR::AudioRegion> audio_region() const;
  72
  73         void create_waves ();
  74
  75         void set_height (double);
  76         void set_samples_per_unit (double);
  77
  78         void set_amplitude_above_axis (gdouble spp);
  79
  80         void temporarily_hide_envelope (); ///< Dangerous!
  81         void unhide_envelope ();           ///< Dangerous!
  82
  83         void set_envelope_visible (bool);
  84         void set_waveform_visible (bool yn);
  85         void set_waveform_shape (ARDOUR::WaveformShape);
  86         void set_waveform_scale (ARDOUR::WaveformScale);
  87
  88         bool waveform_rectified() const { return _flags & WaveformRectified; }
  89         bool waveform_logscaled() const { return _flags & WaveformLogScaled; }
  90         bool waveform_visible()   const { return _flags & WaveformVisible; }
  91         bool envelope_visible()   const { return _flags & EnvelopeVisible; }
  92
  93         void add_gain_point_event (ArdourCanvas::Item *item, GdkEvent *event);
  94         void remove_gain_point_event (ArdourCanvas::Item *item, GdkEvent *event);
  95
  96         AudioRegionGainLine* get_gain_line() const { return gain_line; }
  97
  98         void region_changed (const PBD::PropertyChange&);
  99         void envelope_active_changed ();
 100
 101         GhostRegion* add_ghost (TimeAxisView&);
 102
 103         void reset_fade_in_shape_width (framecnt_t);
 104         void reset_fade_out_shape_width (framecnt_t);
 105
 106         void show_fade_line(framepos_t pos);
 107         void hide_fade_line();
 108
 109         void set_fade_visibility (bool);
 110         void update_coverage_frames (LayerDisplay);
 111
 112         void update_transient(float old_pos, float new_pos);
 113         void remove_transient(float pos);
 114
 115         void show_region_editor ();
 116
 117         virtual void entered (bool);
 118         virtual void exited ();
 119
 120         void thaw_after_trim ();
 121
 122   protected:
 123
 124         /* this constructor allows derived types
 125            to specify their visibility requirements
 126            to the TimeAxisViewItem parent class
 127         */
 128
 129         enum Flags {
 130                 EnvelopeVisible = 0x1,
 131                 WaveformVisible = 0x4,
 132                 WaveformRectified = 0x8,
 133                 WaveformLogScaled = 0x10,
 134         };
 135
 136         std::vector<ArdourCanvas::WaveView *> waves;
 137         std::vector<ArdourCanvas::WaveView *> tmp_waves; ///< see ::create_waves()
 138
 139         std::list<std::pair<framepos_t, ArdourCanvas::Line*> > feature_lines;
 140
 141         ArdourCanvas::Polygon*           sync_mark; ///< polgyon for sync position
 142         ArdourCanvas::SimpleLine*        zero_line;
 143         ArdourCanvas::Polygon*           fade_in_shape;
 144         ArdourCanvas::Polygon*           fade_out_shape;
 145         ArdourCanvas::SimpleRect*        fade_in_handle; ///< fade in handle, or 0
 146         ArdourCanvas::SimpleRect*        fade_out_handle; ///< fade out handle, or 0
 147         ArdourCanvas::SimpleLine*        fade_position_line;
 148
 149         AudioRegionGainLine * gain_line;
 150
 151         double _amplitude_above_axis;
 152
 153         uint32_t _flags;
 154         uint32_t fade_color;
 155
 156         void reset_fade_shapes ();
 157         void reset_fade_in_shape ();
 158         void reset_fade_out_shape ();
 159         void fade_in_changed ();
 160         void fade_out_changed ();
 161         void fade_in_active_changed ();
 162         void fade_out_active_changed ();
 163
 164         void region_resized (const PBD::PropertyChange&);
 165         void region_muted ();
 166         void region_scale_amplitude_changed ();
 167         void region_renamed ();
 168
 169         void create_one_wave (uint32_t, bool);
 170         void manage_zero_line ();
 171         void peaks_ready_handler (uint32_t);
 172         void set_flags (XMLNode *);
 173         void store_flags ();
 174
 175         void set_colors ();
 176         void compute_colors (Gdk::Color const &);
 177         void reset_width_dependent_items (double pixel_width);
 178         void set_waveview_data_src();
 179         void set_frame_color ();
 180
 181         void color_handler ();
 182
 183         std::vector<GnomeCanvasWaveViewCache*> wave_caches;
 184
 185         void transients_changed();
 186
 187 private:
 188
 189         void setup_fade_handle_positions ();
 190
 191         /** A ScopedConnection for each PeaksReady callback (one per channel).  Each member
 192          *  may be 0 if no connection exists.
 193          */
 194         std::vector<PBD::ScopedConnection*> _data_ready_connections;
 195 };
 196
 197 #endif /* __gtk_ardour_audio_region_view_h__ */