gtk2_ardour/crossfade_view.h

   1 /*
   2     Copyright (C) 2003 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
  20 #ifndef __gtk_ardour_crossfade_view_h__
  21 #define __gtk_ardour_crossfade_view_h__
  22
  23 #include <vector>
  24 #include <libgnomecanvasmm.h>
  25 #include "pbd/signals.h"
  26 #include "ardour/crossfade.h"
  27
  28 #include "time_axis_view_item.h"
  29
  30 class RouteTimeAxisView;
  31 class AudioRegionView;
  32
  33 class CrossfadeView : public TimeAxisViewItem
  34 {
  35 public:
  36         CrossfadeView (ArdourCanvas::Group*,
  37                        RouteTimeAxisView&,
  38                        boost::shared_ptr<ARDOUR::Crossfade>,
  39                        double initial_samples_per_unit,
  40                        Gdk::Color& basic_color,
  41                        AudioRegionView& leftview,
  42                        AudioRegionView& rightview);
  43
  44         ~CrossfadeView ();
  45
  46         boost::shared_ptr<ARDOUR::Crossfade> crossfade;  // ok, let 'em have it
  47
  48         AudioRegionView& left_view;    // and these too
  49         AudioRegionView& right_view;
  50
  51         void set_height (double);
  52
  53         bool valid() const { return _valid; }
  54         bool visible() const { return _visible; }
  55         void set_valid (bool yn);
  56
  57         static PBD::Signal1<void,CrossfadeView*> CatchDeletion;
  58
  59         AudioRegionView& upper_regionview () const;
  60
  61         void fake_hide ();
  62         void hide ();
  63         void show ();
  64         void horizontal_position_changed ();
  65
  66 protected:
  67         void reset_width_dependent_items (double pixel_width);
  68
  69 private:
  70         bool _valid;
  71         bool _visible;
  72         bool _all_in_view;
  73
  74         ArdourCanvas::Line *fade_in;
  75         ArdourCanvas::Line *fade_out;
  76         ArdourCanvas::Item *active_button;
  77
  78         void crossfade_changed (const PBD::PropertyChange&);
  79         void crossfade_fades_changed ();
  80         void active_changed ();
  81         void redraw_curves ();
  82         void color_handler ();
  83 };
  84
  85 #endif /* __gtk_ardour_crossfade_view_h__ */