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 "ardour/midi_automation_list_binder.h"
  26 #include "ardour/midi_region.h"
  27
  28 #include "automation_region_view.h"
  29 #include "gui_thread.h"
  30 #include "public_editor.h"
  31 #include "midi_automation_line.h"
  32
  33 #include "i18n.h"
  34
  35 AutomationRegionView::AutomationRegionView(ArdourCanvas::Group*                      parent,
  36                                            AutomationTimeAxisView&                   time_axis,
  37                                            boost::shared_ptr<ARDOUR::Region>         region,
  38                                            const Evoral::Parameter&                  param,
  39                                            boost::shared_ptr<ARDOUR::AutomationList> list,
  40                                            double                                    spu,
  41                                            Gdk::Color const &                        basic_color)
  42         : RegionView(parent, time_axis, region, spu, basic_color)
  43         , _parameter(param)
  44 {
  45         if (list) {
  46                 assert(list->parameter() == param);
  47                 create_line(list);
  48         }
  49
  50         group->signal_event().connect (sigc::mem_fun (this, &AutomationRegionView::canvas_event), false);
  51         group->raise_to_top();
  52 }
  53
  54 void
  55 AutomationRegionView::init (Gdk::Color const & basic_color, bool /*wfd*/)
  56 {
  57         _enable_display = false;
  58
  59         RegionView::init(basic_color, false);
  60
  61         compute_colors (basic_color);
  62
  63         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  64
  65         set_height (trackview.current_height());
  66
  67         _region->PropertyChanged.connect (*this, invalidator (*this), ui_bind (&RegionView::region_changed, this, _1), gui_context());
  68
  69         set_colors ();
  70
  71         _enable_display = true;
  72 }
  73
  74 void
  75 AutomationRegionView::create_line (boost::shared_ptr<ARDOUR::AutomationList> list)
  76 {
  77         _line = boost::shared_ptr<AutomationLine> (new MidiAutomationLine(
  78                                 ARDOUR::EventTypeMap::instance().to_symbol(list->parameter()),
  79                                 trackview, *get_canvas_group(), list,
  80                                 boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region),
  81                                 _parameter,
  82                                 &_time_converter));
  83         _line->set_colors();
  84         _line->set_height ((uint32_t)rint(trackview.current_height() - NAME_HIGHLIGHT_SIZE));
  85         _line->show();
  86         _line->show_all_control_points();
  87 }
  88
  89 bool
  90 AutomationRegionView::canvas_event(GdkEvent* ev)
  91 {
  92         if (ev->type == GDK_BUTTON_RELEASE) {
  93
  94                 double x = ev->button.x;
  95                 double y = ev->button.y;
  96
  97                 /* convert to item coordinates in the time axis view */
  98                 automation_view()->canvas_display()->w2i (x, y);
  99
 100                 /* clamp y */
 101                 y = max (y, 0.0);
 102                 y = min (y, _height - NAME_HIGHLIGHT_SIZE);
 103
 104                 add_automation_event (ev, trackview.editor().pixel_to_frame (x) - _region->position(), y);
 105         }
 106
 107         return false;
 108 }
 109
 110 /** @param when Position in frames, where 0 is the start of the region.
 111  *  @param y y position, relative to our TimeAxisView.
 112  */
 113 void
 114 AutomationRegionView::add_automation_event (GdkEvent *, nframes_t when, double y)
 115 {
 116         if (!_line) {
 117                 boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
 118                 boost::shared_ptr<ARDOUR::AutomationControl> ac
 119                                 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
 120                 assert(ac);
 121                 create_line(ac->alist());
 122         }
 123         assert(_line);
 124
 125         AutomationTimeAxisView* const view = automation_view ();
 126
 127         /* compute vertical fractional position */
 128
 129         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
 130         y = 1.0 - (y / h);
 131
 132         /* map using line */
 133
 134         double when_d = when;
 135         _line->view_to_model_coord (when_d, y);
 136
 137         view->session()->begin_reversible_command (_("add automation event"));
 138         XMLNode& before = _line->the_list()->get_state();
 139
 140         _line->the_list()->add (when_d, y);
 141
 142         XMLNode& after = _line->the_list()->get_state();
 143
 144         /* XXX: hack! */
 145         boost::shared_ptr<ARDOUR::MidiRegion> mr = boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region);
 146         assert (mr);
 147
 148         view->session()->commit_reversible_command (
 149                 new MementoCommand<ARDOUR::AutomationList> (new ARDOUR::MidiAutomationListBinder (mr->midi_source(), _parameter), &before, &after)
 150                 );
 151
 152
 153         view->session()->set_dirty ();
 154 }
 155
 156 void
 157 AutomationRegionView::set_height (double h)
 158 {
 159         RegionView::set_height(h);
 160
 161         if (_line) {
 162                 _line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
 163         }
 164 }
 165
 166 bool
 167 AutomationRegionView::set_position (nframes64_t pos, void* src, double* ignored)
 168 {
 169         return RegionView::set_position(pos, src, ignored);
 170 }
 171
 172
 173 void
 174 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 175 {
 176         RegionView::reset_width_dependent_items(pixel_width);
 177
 178         if (_line)
 179                 _line->reset();
 180 }
 181
 182
 183 void
 184 AutomationRegionView::region_resized (const PBD::PropertyChange& what_changed)
 185 {
 186         RegionView::region_resized(what_changed);
 187
 188         if (_line)
 189                 _line->reset();
 190 }
 191
 192
 193 void
 194 AutomationRegionView::entered (bool)
 195 {
 196         if (_line)
 197                 _line->track_entered();
 198 }
 199
 200
 201 void
 202 AutomationRegionView::exited()
 203 {
 204         if (_line)
 205                 _line->track_exited();
 206 }
 207