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