gtk2_ardour/automation_line.h

   1 /*
   2     Copyright (C) 2002 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 __ardour_automation_line_h__
  21 #define __ardour_automation_line_h__
  22
  23 #include <vector>
  24 #include <list>
  25 #include <string>
  26 #include <sys/types.h>
  27
  28 #include <libgnomecanvasmm/line.h>
  29 #include <sigc++/signal.h>
  30 #include "canvas.h"
  31 #include "simplerect.h"
  32
  33 #include <pbd/undo.h>
  34 #include <pbd/statefuldestructible.h>
  35
  36 #include <ardour/automation_event.h>
  37
  38
  39 using std::vector;
  40 using std::string;
  41
  42 class AutomationLine;
  43 class ControlPoint;
  44 class PointSelection;
  45 class TimeAxisView;
  46 class AutomationTimeAxisView;
  47 class Selectable;
  48 class Selection;
  49
  50 namespace Gnome {
  51         namespace Canvas {
  52                 class SimpleRect;
  53         }
  54 }
  55
  56 class ControlPoint
  57 {
  58   public:
  59         ControlPoint (AutomationLine& al);
  60         ControlPoint (const ControlPoint&, bool dummy_arg_to_force_special_copy_constructor);
  61         virtual ~ControlPoint ();
  62
  63         enum ShapeType {
  64                 Full,
  65                 Start,
  66                 End
  67         };
  68
  69         void move_to (double x, double y, ShapeType);
  70         void reset (double x, double y, ARDOUR::AutomationList::iterator, uint32_t, ShapeType);
  71         double get_x() const { return _x; }
  72         double get_y() const { return _y; }
  73
  74         void hide ();
  75         void show ();
  76         void show_color (bool entered, bool hide_too);
  77
  78         void set_size (double);
  79         void set_visible (bool);
  80
  81         ArdourCanvas::SimpleRect* item;
  82         AutomationLine& line;
  83         uint32_t view_index;
  84         ARDOUR::AutomationList::iterator model;
  85         bool can_slide;
  86         bool selected;
  87
  88   protected:
  89         virtual bool event_handler (GdkEvent*);
  90
  91   private:
  92         double _x;
  93         double _y;
  94         double _size;
  95         ShapeType _shape;
  96 };
  97
  98 class AutomationLine : public sigc::trackable, public PBD::StatefulThingWithGoingAway
  99 {
 100   public:
 101         AutomationLine (const string & name, TimeAxisView&, ArdourCanvas::Group&, ARDOUR::AutomationList&);
 102         virtual ~AutomationLine ();
 103
 104         void queue_reset ();
 105         void reset ();
 106         void clear();
 107
 108         void set_selected_points (PointSelection&);
 109         void get_selectables (nframes_t& start, nframes_t& end,
 110                               double botfrac, double topfrac,
 111                               list<Selectable*>& results);
 112         void get_inverted_selectables (Selection&, list<Selectable*>& results);
 113
 114         virtual void remove_point (ControlPoint&);
 115         bool control_points_adjacent (double xval, uint32_t& before, uint32_t& after);
 116
 117         /* dragging API */
 118
 119         virtual void start_drag (ControlPoint*, nframes_t x, float fraction);
 120         virtual void point_drag(ControlPoint&, nframes_t x, float, bool with_push);
 121         virtual void end_drag (ControlPoint*);
 122         virtual void line_drag(uint32_t i1, uint32_t i2, float, bool with_push);
 123
 124         ControlPoint* nth (uint32_t);
 125         uint32_t npoints() const { return control_points.size(); }
 126
 127         string  name() const { return _name; }
 128         bool    visible() const { return _visible; }
 129         guint32 height() const { return _height; }
 130
 131         void     set_line_color (uint32_t);
 132         uint32_t get_line_color() const { return _line_color; }
 133
 134         void    show ();
 135         void    hide ();
 136         void    set_height (guint32);
 137         void    set_verbose_cursor_uses_gain_mapping (bool yn);
 138
 139         TimeAxisView& trackview;
 140
 141         ArdourCanvas::Group& canvas_group() const { return *group; }
 142         ArdourCanvas::Item&  parent_group() const { return _parent_group; }
 143         ArdourCanvas::Item&  grab_item() const { return *line; }
 144
 145         void show_selection();
 146         void hide_selection ();
 147
 148         virtual string get_verbose_cursor_string (float);
 149         virtual void view_to_model_y (double&) = 0;
 150         virtual void model_to_view_y (double&) = 0;
 151
 152         ARDOUR::AutomationList& the_list() const { return alist; }
 153
 154         void show_all_control_points ();
 155         void hide_all_but_selected_control_points ();
 156
 157         bool is_last_point (ControlPoint &);
 158         bool is_first_point (ControlPoint &);
 159
 160         XMLNode& get_state (void);
 161         int set_state (const XMLNode&);
 162         void set_colors();
 163
 164   protected:
 165
 166         string _name;
 167         guint32 _height;
 168         uint32_t _line_color;
 169         ARDOUR::AutomationList& alist;
 170
 171         bool    _visible  : 1;
 172         bool    _vc_uses_gain_mapping : 1;
 173         bool    terminal_points_can_slide : 1;
 174         bool    update_pending : 1;
 175         bool    auto_is_boolean : 1;
 176         bool    points_visible : 1;
 177         bool    did_push;
 178
 179         ArdourCanvas::Group&  _parent_group;
 180         ArdourCanvas::Group*   group;
 181         ArdourCanvas::Line*    line; /* line */
 182         ArdourCanvas::Points   line_points; /* coordinates for canvas line */
 183         vector<ControlPoint*>  control_points; /* visible control points */
 184
 185         struct ALPoint {
 186             double x;
 187             double y;
 188             ALPoint (double xx, double yy) : x(xx), y(yy) {}
 189         };
 190
 191         typedef std::vector<ALPoint> ALPoints;
 192
 193         static void invalidate_point (ALPoints&, uint32_t index);
 194         static bool invalid_point (ALPoints&, uint32_t index);
 195
 196         void determine_visible_control_points (ALPoints&);
 197         void sync_model_with_view_point (ControlPoint&, bool did_push, int64_t distance);
 198         void sync_model_with_view_line (uint32_t, uint32_t);
 199
 200         virtual void change_model (ARDOUR::AutomationList::iterator, double x, double y);
 201         virtual void change_model_range (ARDOUR::AutomationList::iterator,ARDOUR::AutomationList::iterator, double delta, float ydelta);
 202
 203         void reset_callback (const ARDOUR::AutomationList&);
 204         void list_changed ();
 205
 206         virtual bool event_handler (GdkEvent*);
 207         virtual void add_model_point (ALPoints& tmp_points, double frame, double yfract);
 208
 209   private:
 210         uint32_t drags;
 211         double   first_drag_fraction;
 212         double   last_drag_fraction;
 213         uint32_t line_drag_cp1;
 214         uint32_t line_drag_cp2;
 215         int64_t  drag_x;
 216         int64_t  drag_distance;
 217
 218         void modify_view_point(ControlPoint&, double, double, bool with_push);
 219         void reset_line_coords (ControlPoint&);
 220
 221         double control_point_box_size ();
 222
 223         struct ModelRepresentation {
 224             ARDOUR::AutomationList::iterator start;
 225             ARDOUR::AutomationList::iterator end;
 226             nframes_t xpos;
 227             double ypos;
 228             nframes_t xmin;
 229             double ymin;
 230             nframes_t xmax;
 231             double ymax;
 232             nframes_t xval;
 233             double yval;
 234         };
 235
 236         void model_representation (ControlPoint&, ModelRepresentation&);
 237
 238         friend class AudioRegionGainLine;
 239 };
 240
 241
 242 #endif /* __ardour_automation_line_h__ */
 243