gtk2_ardour/automation_region_view.cc

   1 /*
   2     Copyright (C) 2007 Paul Davis
   3     Author: Dave Robillard
   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 #include "pbd/memento_command.h"
  21 #include "ardour/automation_control.h"
  22 #include "ardour/event_type_map.h"
  23 #include "ardour/session.h"
  24 #include "ardour/source.h"
  25
  26 #include "automation_region_view.h"
  27 #include "gui_thread.h"
  28 #include "public_editor.h"
  29
  30 #include "i18n.h"
  31
  32 AutomationRegionView::AutomationRegionView(ArdourCanvas::Group*                      parent,
  33                                            AutomationTimeAxisView&                   time_axis,
  34                                            boost::shared_ptr<ARDOUR::Region>         region,
  35                                            const Evoral::Parameter&                  param,
  36                                            boost::shared_ptr<ARDOUR::AutomationList> list,
  37                                            double                                    spu,
  38                                            Gdk::Color const &                        basic_color)
  39         : RegionView(parent, time_axis, region, spu, basic_color)
  40         , _parameter(param)
  41 {
  42         if (list) {
  43                 assert(list->parameter() == param);
  44                 create_line(list);
  45         }
  46
  47         group->signal_event().connect (sigc::mem_fun (this, &AutomationRegionView::canvas_event), false);
  48         group->raise_to_top();
  49 }
  50
  51 void
  52 AutomationRegionView::init (Gdk::Color const & basic_color, bool /*wfd*/)
  53 {
  54         _enable_display = false;
  55
  56         RegionView::init(basic_color, false);
  57
  58         compute_colors (basic_color);
  59
  60         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  61
  62         set_height (trackview.current_height());
  63
  64         _region->PropertyChanged.connect (*this, invalidator (*this), ui_bind (&RegionView::region_changed, this, _1), gui_context());
  65
  66         set_colors ();
  67
  68         _enable_display = true;
  69 }
  70
  71 void
  72 AutomationRegionView::create_line (boost::shared_ptr<ARDOUR::AutomationList> list)
  73 {
  74         _line = boost::shared_ptr<AutomationLine>(new AutomationLine(
  75                                 ARDOUR::EventTypeMap::instance().to_symbol(list->parameter()),
  76                                 trackview, *get_canvas_group(), list, &_time_converter));
  77         _line->set_colors();
  78         _line->set_interpolation(list->interpolation());
  79         _line->set_height ((uint32_t)rint(trackview.current_height() - NAME_HIGHLIGHT_SIZE));
  80         _line->show();
  81         _line->show_all_control_points();
  82 }
  83
  84 bool
  85 AutomationRegionView::canvas_event(GdkEvent* ev)
  86 {
  87         if (ev->type == GDK_BUTTON_RELEASE) {
  88
  89                 double x = ev->button.x;
  90                 double y = ev->button.y;
  91
  92                 /* convert to item coordinates in the time axis view */
  93                 automation_view()->canvas_display()->w2i (x, y);
  94
  95                 add_automation_event (ev, trackview.editor().pixel_to_frame (x) - _region->position(), y);
  96         }
  97
  98         return false;
  99 }
 100
 101 /** @param when Position in frames, where 0 is the start of the region.
 102  *  @param y y position, relative to our TimeAxisView.
 103  */
 104 void
 105 AutomationRegionView::add_automation_event (GdkEvent *, nframes_t when, double y)
 106 {
 107         if (!_line) {
 108                 boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
 109                 boost::shared_ptr<ARDOUR::AutomationControl> ac
 110                                 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
 111                 assert(ac);
 112                 create_line(ac->alist());
 113         }
 114         assert(_line);
 115
 116         AutomationTimeAxisView* const view = automation_view ();
 117
 118         /* compute vertical fractional position */
 119
 120         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
 121         y = 1.0 - (y / h);
 122
 123         /* map using line */
 124
 125         double when_d = when;
 126         _line->view_to_model_coord (when_d, y);
 127
 128         view->session()->begin_reversible_command (_("add automation event"));
 129         XMLNode& before = _line->the_list()->get_state();
 130
 131         _line->the_list()->add (when_d, y);
 132
 133         XMLNode& after = _line->the_list()->get_state();
 134         view->session()->commit_reversible_command (new MementoCommand<ARDOUR::AutomationList>(
 135                         *_line->the_list(), &before, &after));
 136
 137         view->session()->set_dirty ();
 138 }
 139
 140 void
 141 AutomationRegionView::set_height (double h)
 142 {
 143         RegionView::set_height(h);
 144
 145         if (_line)
 146                 _line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
 147 }
 148
 149 bool
 150 AutomationRegionView::set_position (nframes64_t pos, void* src, double* ignored)
 151 {
 152         return RegionView::set_position(pos, src, ignored);
 153 }
 154
 155
 156 void
 157 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 158 {
 159         RegionView::reset_width_dependent_items(pixel_width);
 160
 161         if (_line)
 162                 _line->reset();
 163 }
 164
 165
 166 void
 167 AutomationRegionView::region_resized (const PBD::PropertyChange& what_changed)
 168 {
 169         RegionView::region_resized(what_changed);
 170
 171         if (_line)
 172                 _line->reset();
 173 }
 174
 175
 176 void
 177 AutomationRegionView::entered()
 178 {
 179         if (_line)
 180                 _line->track_entered();
 181 }
 182
 183
 184 void
 185 AutomationRegionView::exited()
 186 {
 187         if (_line)
 188                 _line->track_exited();
 189 }
 190