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 "route_time_axis.h"
  31 #include "time_axis_view_item.h"
  32 #include "automation_line.h"
  33 #include "enums.h"
  34 #include "waveview.h"
  35 #include "canvas.h"
  36
  37 namespace ARDOUR {
  38         class AudioRegion;
  39         class PeakData;
  40 };
  41
  42 class AudioTimeAxisView;
  43 class AudioRegionGainLine;
  44 class AudioRegionEditor;
  45 class GhostRegion;
  46 class AutomationTimeAxisView;
  47
  48 class AudioRegionView : public RegionView
  49 {
  50   public:
  51         AudioRegionView (ArdourCanvas::Group *,
  52                          RouteTimeAxisView&,
  53                          boost::shared_ptr<ARDOUR::AudioRegion>,
  54                          double initial_samples_per_unit,
  55                          Gdk::Color& basic_color);
  56
  57         AudioRegionView (ArdourCanvas::Group *,
  58                      RouteTimeAxisView&,
  59                      boost::shared_ptr<ARDOUR::AudioRegion>,
  60                      double      samples_per_unit,
  61                      Gdk::Color& basic_color,
  62                          bool recording,
  63                      TimeAxisViewItem::Visibility);
  64
  65         AudioRegionView (const AudioRegionView& other);
  66         AudioRegionView (const AudioRegionView& other, boost::shared_ptr<ARDOUR::AudioRegion>);
  67
  68         ~AudioRegionView ();
  69
  70         virtual void init (Gdk::Color& base_color, bool wait_for_data);
  71
  72         boost::shared_ptr<ARDOUR::AudioRegion> audio_region() const;
  73
  74         void create_waves ();
  75
  76         void set_height (double);
  77         void set_samples_per_unit (double);
  78
  79         void set_amplitude_above_axis (gdouble spp);
  80
  81         void temporarily_hide_envelope (); ///< Dangerous!
  82         void unhide_envelope ();           ///< Dangerous!
  83
  84         void set_envelope_visible (bool);
  85         void set_waveform_visible (bool yn);
  86         void set_waveform_shape (Editing::WaveformShape);
  87         void set_waveform_scale (Editing::WaveformScale);
  88
  89         bool waveform_rectified() const { return _flags & WaveformRectified; }
  90         bool waveform_logscaled() const { return _flags & WaveformLogScaled; }
  91         bool waveform_visible()   const { return _flags & WaveformVisible; }
  92         bool envelope_visible()   const { return _flags & EnvelopeVisible; }
  93
  94         void show_region_editor ();
  95
  96         void add_gain_point_event (ArdourCanvas::Item *item, GdkEvent *event);
  97         void remove_gain_point_event (ArdourCanvas::Item *item, GdkEvent *event);
  98
  99         AudioRegionGainLine* get_gain_line() const { return gain_line; }
 100
 101         void region_changed (ARDOUR::Change);
 102         void envelope_active_changed ();
 103
 104         GhostRegion* add_ghost (AutomationTimeAxisView&);
 105
 106         void reset_fade_in_shape_width (nframes_t);
 107         void reset_fade_out_shape_width (nframes_t);
 108
 109         void set_fade_visibility (bool);
 110
 111         virtual void entered ();
 112         virtual void exited ();
 113
 114   protected:
 115
 116     /* this constructor allows derived types
 117        to specify their visibility requirements
 118        to the TimeAxisViewItem parent class
 119     */
 120
 121     enum Flags {
 122             EnvelopeVisible = 0x1,
 123             WaveformVisible = 0x4,
 124             WaveformRectified = 0x8,
 125             WaveformLogScaled = 0x10,
 126     };
 127
 128     void reset_fade_shapes ();
 129     void reset_fade_in_shape ();
 130     void reset_fade_out_shape ();
 131     void fade_in_changed ();
 132     void fade_out_changed ();
 133     void fade_in_active_changed ();
 134     void fade_out_active_changed ();
 135
 136     void region_resized (ARDOUR::Change);
 137     void region_moved (void *);
 138     void region_muted ();
 139     void region_scale_amplitude_changed ();
 140
 141     void create_one_wave (uint32_t, bool);
 142     void manage_zero_line ();
 143     void peaks_ready_handler (uint32_t);
 144     void set_flags (XMLNode *);
 145     void store_flags ();
 146
 147     void set_colors ();
 148     void compute_colors (Gdk::Color&);
 149     void reset_width_dependent_items (double pixel_width);
 150     void set_waveview_data_src();
 151     void set_frame_color ();
 152
 153     void color_handler ();
 154
 155     vector<GnomeCanvasWaveViewCache*> wave_caches;
 156     vector<ArdourCanvas::WaveView *>  waves;
 157     vector<ArdourCanvas::WaveView *>  tmp_waves; ///< see ::create_waves()
 158     ArdourCanvas::Polygon*            sync_mark; ///< polgyon for sync position
 159     ArdourCanvas::SimpleLine*         zero_line;
 160     ArdourCanvas::Polygon*            fade_in_shape;
 161     ArdourCanvas::Polygon*            fade_out_shape;
 162     ArdourCanvas::SimpleRect*         fade_in_handle;
 163     ArdourCanvas::SimpleRect*         fade_out_handle;
 164     AudioRegionGainLine*              gain_line;
 165
 166     double _amplitude_above_axis;
 167
 168     uint32_t _flags;
 169     uint32_t fade_color;
 170 };
 171
 172 #endif /* __gtk_ardour_audio_region_view_h__ */