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 #include "editor_drag.h"
  33 #include "editor.h"
  34
  35 #include "i18n.h"
  36
  37 AutomationRegionView::AutomationRegionView(ArdourCanvas::Group*                      parent,
  38                                            AutomationTimeAxisView&                   time_axis,
  39                                            boost::shared_ptr<ARDOUR::Region>         region,
  40                                            const Evoral::Parameter&                  param,
  41                                            boost::shared_ptr<ARDOUR::AutomationList> list,
  42                                            double                                    spu,
  43                                            Gdk::Color const &                        basic_color)
  44         : RegionView(parent, time_axis, region, spu, basic_color)
  45         , _parameter(param)
  46 {
  47         if (list) {
  48                 assert(list->parameter() == param);
  49                 create_line(list);
  50         }
  51
  52         group->signal_event().connect (sigc::mem_fun (this, &AutomationRegionView::canvas_event), false);
  53         group->raise_to_top();
  54 }
  55
  56 void
  57 AutomationRegionView::init (Gdk::Color const & basic_color, bool /*wfd*/)
  58 {
  59         _enable_display = false;
  60
  61         RegionView::init(basic_color, false);
  62
  63         compute_colors (basic_color);
  64
  65         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  66
  67         set_height (trackview.current_height());
  68
  69         _region->PropertyChanged.connect (*this, invalidator (*this), ui_bind (&RegionView::region_changed, this, _1), gui_context());
  70
  71         set_colors ();
  72
  73         _enable_display = true;
  74 }
  75
  76 void
  77 AutomationRegionView::create_line (boost::shared_ptr<ARDOUR::AutomationList> list)
  78 {
  79         _line = boost::shared_ptr<AutomationLine> (new MidiAutomationLine(
  80                                 ARDOUR::EventTypeMap::instance().to_symbol(list->parameter()),
  81                                 trackview, *get_canvas_group(), list,
  82                                 boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region),
  83                                 _parameter,
  84                                 &_time_converter));
  85         _line->set_colors();
  86         _line->set_height ((uint32_t)rint(trackview.current_height() - NAME_HIGHLIGHT_SIZE));
  87         _line->show();
  88         _line->show_all_control_points();
  89 }
  90
  91 bool
  92 AutomationRegionView::canvas_event(GdkEvent* ev)
  93 {
  94         if (ev->type == GDK_BUTTON_PRESS) {
  95
  96                 /* XXX: icky dcast to Editor */
  97                 trackview.editor().drags()->set (new RubberbandSelectDrag (dynamic_cast<Editor*> (&trackview.editor()), group), ev);
  98
  99         } else if (ev->type == GDK_BUTTON_RELEASE) {
 100
 101                 if (trackview.editor().drags()->active() && trackview.editor().drags()->end_grab (ev)) {
 102                         return true;
 103                 }
 104
 105                 double x = ev->button.x;
 106                 double y = ev->button.y;
 107
 108                 /* convert to item coordinates in the time axis view */
 109                 automation_view()->canvas_display()->w2i (x, y);
 110
 111                 /* clamp y */
 112                 y = max (y, 0.0);
 113                 y = min (y, _height - NAME_HIGHLIGHT_SIZE);
 114
 115                 add_automation_event (ev, trackview.editor().pixel_to_frame (x) - _region->position(), y);
 116         }
 117
 118         return false;
 119 }
 120
 121 /** @param when Position in frames, where 0 is the start of the region.
 122  *  @param y y position, relative to our TimeAxisView.
 123  */
 124 void
 125 AutomationRegionView::add_automation_event (GdkEvent *, nframes_t when, double y)
 126 {
 127         if (!_line) {
 128                 boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
 129                 boost::shared_ptr<ARDOUR::AutomationControl> ac
 130                                 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
 131                 assert(ac);
 132                 create_line(ac->alist());
 133         }
 134         assert(_line);
 135
 136         AutomationTimeAxisView* const view = automation_view ();
 137
 138         /* compute vertical fractional position */
 139
 140         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
 141         y = 1.0 - (y / h);
 142
 143         /* map using line */
 144
 145         double when_d = when;
 146         _line->view_to_model_coord (when_d, y);
 147
 148         view->session()->begin_reversible_command (_("add automation event"));
 149         XMLNode& before = _line->the_list()->get_state();
 150
 151         _line->the_list()->add (when_d, y);
 152
 153         XMLNode& after = _line->the_list()->get_state();
 154
 155         /* XXX: hack! */
 156         boost::shared_ptr<ARDOUR::MidiRegion> mr = boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region);
 157         assert (mr);
 158
 159         view->session()->commit_reversible_command (
 160                 new MementoCommand<ARDOUR::AutomationList> (new ARDOUR::MidiAutomationListBinder (mr->midi_source(), _parameter), &before, &after)
 161                 );
 162
 163
 164         view->session()->set_dirty ();
 165 }
 166
 167 void
 168 AutomationRegionView::set_height (double h)
 169 {
 170         RegionView::set_height(h);
 171
 172         if (_line) {
 173                 _line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
 174         }
 175 }
 176
 177 bool
 178 AutomationRegionView::set_position (nframes64_t pos, void* src, double* ignored)
 179 {
 180         return RegionView::set_position(pos, src, ignored);
 181 }
 182
 183
 184 void
 185 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 186 {
 187         RegionView::reset_width_dependent_items(pixel_width);
 188
 189         if (_line)
 190                 _line->reset();
 191 }
 192
 193
 194 void
 195 AutomationRegionView::region_resized (const PBD::PropertyChange& what_changed)
 196 {
 197         RegionView::region_resized(what_changed);
 198
 199         if (_line)
 200                 _line->reset();
 201 }
 202
 203
 204 void
 205 AutomationRegionView::entered (bool)
 206 {
 207         if (_line)
 208                 _line->track_entered();
 209 }
 210
 211
 212 void
 213 AutomationRegionView::exited()
 214 {
 215         if (_line)
 216                 _line->track_exited();
 217 }
 218