gtk2_ardour/editor_summary.h

   1
   2 /*
   3     Copyright (C) 2009 Paul Davis
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20
  21 #ifndef __gtk_ardour_editor_summary_h__
  22 #define __gtk_ardour_editor_summary_h__
  23
  24 #include "cairo_widget.h"
  25 #include "editor_component.h"
  26
  27 namespace ARDOUR {
  28         class Session;
  29 }
  30
  31 class Editor;
  32
  33 /** Class to provide a visual summary of the contents of an editor window; represents
  34  *  the whole session as a set of lines, one per region view.
  35  */
  36 class EditorSummary : public CairoWidget, public EditorComponent, public ARDOUR::SessionHandlePtr
  37 {
  38 public:
  39         EditorSummary (Editor *);
  40
  41         void set_session (ARDOUR::Session *);
  42         void set_overlays_dirty ();
  43
  44 private:
  45
  46         enum Position {
  47                 LEFT,
  48                 LEFT_TOP,
  49                 TOP,
  50                 RIGHT_TOP,
  51                 RIGHT,
  52                 RIGHT_BOTTOM,
  53                 BOTTOM,
  54                 LEFT_BOTTOM,
  55                 INSIDE,
  56                 BELOW_OR_ABOVE,
  57                 TO_LEFT_OR_RIGHT,
  58                 OTHERWISE_OUTSIDE
  59         };
  60
  61         bool on_expose_event (GdkEventExpose *);
  62         void on_size_request (Gtk::Requisition *);
  63         bool on_button_press_event (GdkEventButton *);
  64         bool on_button_release_event (GdkEventButton *);
  65         bool on_motion_notify_event (GdkEventMotion *);
  66         bool on_scroll_event (GdkEventScroll *);
  67
  68         void centre_on_click (GdkEventButton *);
  69         void render (cairo_t *);
  70         void render_region (RegionView*, cairo_t*, double) const;
  71         void get_editor (std::pair<double, double> *, std::pair<double, double> *) const;
  72         void set_editor (std::pair<double, double> const &, double);
  73         void set_editor (std::pair<double, double> const &, std::pair<double, double> const &);
  74         void set_editor_x (std::pair<double, double> const &);
  75         void set_editor_y (double);
  76         void set_editor_y (std::pair<double, double> const &);
  77         void playhead_position_changed (nframes64_t);
  78         double summary_y_to_editor (double) const;
  79         double editor_y_to_summary (double) const;
  80         Position get_position (double, double) const;
  81         void set_cursor (Position);
  82
  83         nframes_t _start; ///< start frame of the overview
  84         nframes_t _end; ///< end frame of the overview
  85
  86         /** fraction of the session length by which the overview size should extend past the start and end markers */
  87         double _overhang_fraction;
  88
  89         double _x_scale; ///< pixels per frame for the x axis of the pixmap
  90         double _track_height;
  91         double _last_playhead;
  92
  93         std::pair<double, double> _start_editor_x;
  94         std::pair<double, double> _start_editor_y;
  95         double _start_mouse_x;
  96         double _start_mouse_y;
  97
  98         Position _start_position;
  99
 100         bool _move_dragging;
 101         bool _moved;
 102         std::pair<double, double> _view_rectangle_x;
 103         std::pair<double, double> _view_rectangle_y;
 104
 105         bool _zoom_dragging;
 106         Position _zoom_position;
 107
 108         PBD::ScopedConnectionList position_connection;
 109         PBD::ScopedConnectionList region_property_connection;
 110 };
 111
 112 #endif