gtk2_ardour/automation_region_view.cc

   1 /*
   2     Copyright (C) 2007 Paul Davis
   3     Author: David 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 <utility>
  21
  22 #include "pbd/memento_command.h"
  23
  24 #include "ardour/automation_control.h"
  25 #include "ardour/event_type_map.h"
  26 #include "ardour/midi_automation_list_binder.h"
  27 #include "ardour/midi_region.h"
  28 #include "ardour/session.h"
  29 #include "ardour/source.h"
  30
  31 #include "automation_region_view.h"
  32 #include "editing.h"
  33 #include "editor.h"
  34 #include "editor_drag.h"
  35 #include "gui_thread.h"
  36 #include "midi_automation_line.h"
  37 #include "public_editor.h"
  38
  39 #include "i18n.h"
  40
  41 AutomationRegionView::AutomationRegionView (ArdourCanvas::Group*                      parent,
  42                                             AutomationTimeAxisView&                   time_axis,
  43                                             boost::shared_ptr<ARDOUR::Region>         region,
  44                                             const Evoral::Parameter&                  param,
  45                                             boost::shared_ptr<ARDOUR::AutomationList> list,
  46                                             double                                    spu,
  47                                             Gdk::Color const &                        basic_color)
  48         : RegionView(parent, time_axis, region, spu, basic_color, true)
  49         , _parameter(param)
  50 {
  51         if (list) {
  52                 assert(list->parameter() == param);
  53                 create_line(list);
  54         }
  55
  56         group->signal_event().connect (sigc::mem_fun (this, &AutomationRegionView::canvas_event), false);
  57         group->raise_to_top();
  58 }
  59
  60 AutomationRegionView::~AutomationRegionView ()
  61 {
  62 }
  63
  64 void
  65 AutomationRegionView::init (Gdk::Color const & basic_color, bool /*wfd*/)
  66 {
  67         _enable_display = false;
  68
  69         RegionView::init(basic_color, false);
  70
  71         compute_colors (basic_color);
  72
  73         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  74
  75         set_height (trackview.current_height());
  76
  77         set_colors ();
  78
  79         _enable_display = true;
  80 }
  81
  82 void
  83 AutomationRegionView::create_line (boost::shared_ptr<ARDOUR::AutomationList> list)
  84 {
  85         _line = boost::shared_ptr<AutomationLine> (new MidiAutomationLine(
  86                                 ARDOUR::EventTypeMap::instance().to_symbol(list->parameter()),
  87                                 trackview, *get_canvas_group(), list,
  88                                 boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region),
  89                                 _parameter,
  90                                 &_source_relative_time_converter));
  91         _line->set_colors();
  92         _line->set_height ((uint32_t)rint(trackview.current_height() - NAME_HIGHLIGHT_SIZE));
  93         _line->show();
  94         _line->show_all_control_points();
  95         _line->set_maximum_time (_region->length());
  96         _line->set_offset (_region->start ());
  97 }
  98
  99 bool
 100 AutomationRegionView::canvas_event (GdkEvent* ev)
 101 {
 102         PublicEditor& e = trackview.editor ();
 103
 104         if (ev->type == GDK_BUTTON_PRESS && e.current_mouse_mode() == Editing::MouseObject) {
 105
 106                 /* XXX: icky dcast to Editor */
 107                 e.drags()->set (new EditorRubberbandSelectDrag (dynamic_cast<Editor*> (&e), group), ev);
 108
 109         } else if (ev->type == GDK_BUTTON_RELEASE) {
 110
 111                 if (trackview.editor().drags()->active() && trackview.editor().drags()->end_grab (ev)) {
 112                         return true;
 113                 }
 114
 115                 double x = ev->button.x;
 116                 double y = ev->button.y;
 117
 118                 /* convert to item coordinates in the time axis view */
 119                 automation_view()->canvas_display()->w2i (x, y);
 120
 121                 /* clamp y */
 122                 y = std::max (y, 0.0);
 123                 y = std::min (y, _height - NAME_HIGHLIGHT_SIZE);
 124
 125                 add_automation_event (ev, trackview.editor().pixel_to_frame (x) - _region->position() + _region->start(), y);
 126         }
 127
 128         return false;
 129 }
 130
 131 /** @param when Position in frames, where 0 is the start of the region.
 132  *  @param y y position, relative to our TimeAxisView.
 133  */
 134 void
 135 AutomationRegionView::add_automation_event (GdkEvent *, framepos_t when, double y)
 136 {
 137         if (!_line) {
 138                 boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
 139                 boost::shared_ptr<ARDOUR::AutomationControl> ac
 140                                 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
 141                 assert(ac);
 142                 create_line(ac->alist());
 143         }
 144         assert(_line);
 145
 146         AutomationTimeAxisView* const view = automation_view ();
 147
 148         /* compute vertical fractional position */
 149
 150         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
 151         y = 1.0 - (y / h);
 152
 153         /* snap frame */
 154
 155         when = snap_frame_to_frame (when - _region->start ()) + _region->start ();
 156
 157         /* map using line */
 158
 159         double when_d = when;
 160         _line->view_to_model_coord (when_d, y);
 161
 162         view->session()->begin_reversible_command (_("add automation event"));
 163         XMLNode& before = _line->the_list()->get_state();
 164
 165         _line->the_list()->add (when_d, y);
 166
 167         XMLNode& after = _line->the_list()->get_state();
 168
 169         /* XXX: hack! */
 170         boost::shared_ptr<ARDOUR::MidiRegion> mr = boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region);
 171         assert (mr);
 172
 173         view->session()->commit_reversible_command (
 174                 new MementoCommand<ARDOUR::AutomationList> (new ARDOUR::MidiAutomationListBinder (mr->midi_source(), _parameter), &before, &after)
 175                 );
 176
 177
 178         view->session()->set_dirty ();
 179 }
 180
 181 void
 182 AutomationRegionView::set_height (double h)
 183 {
 184         RegionView::set_height(h);
 185
 186         if (_line) {
 187                 _line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
 188         }
 189 }
 190
 191 bool
 192 AutomationRegionView::set_position (framepos_t pos, void* src, double* ignored)
 193 {
 194         if (_line) {
 195                 _line->set_maximum_time (_region->length ());
 196         }
 197
 198         return RegionView::set_position(pos, src, ignored);
 199 }
 200
 201
 202 void
 203 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 204 {
 205         RegionView::reset_width_dependent_items(pixel_width);
 206
 207         if (_line) {
 208                 _line->reset();
 209         }
 210 }
 211
 212
 213 void
 214 AutomationRegionView::region_resized (const PBD::PropertyChange& what_changed)
 215 {
 216         RegionView::region_resized (what_changed);
 217
 218         if (!_line) {
 219                 return;
 220         }
 221
 222         if (what_changed.contains (ARDOUR::Properties::start)) {
 223                 _line->set_offset (_region->start ());
 224         }
 225
 226         if (what_changed.contains (ARDOUR::Properties::length)) {
 227                 _line->set_maximum_time (_region->length());
 228         }
 229 }
 230
 231
 232 void
 233 AutomationRegionView::entered (bool)
 234 {
 235         if (_line) {
 236                 _line->track_entered();
 237         }
 238 }
 239
 240
 241 void
 242 AutomationRegionView::exited ()
 243 {
 244         if (_line) {
 245                 _line->track_exited();
 246         }
 247 }