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
  30 #include "gtkmm2ext/keyboard.h"
  31
  32 #include "automation_region_view.h"
  33 #include "editing.h"
  34 #include "editor.h"
  35 #include "editor_drag.h"
  36 #include "gui_thread.h"
  37 #include "midi_automation_line.h"
  38 #include "public_editor.h"
  39
  40 #include "i18n.h"
  41
  42 AutomationRegionView::AutomationRegionView (ArdourCanvas::Container*                  parent,
  43                                             AutomationTimeAxisView&                   time_axis,
  44                                             boost::shared_ptr<ARDOUR::Region>         region,
  45                                             const Evoral::Parameter&                  param,
  46                                             boost::shared_ptr<ARDOUR::AutomationList> list,
  47                                             double                                    spu,
  48                                             uint32_t                                  basic_color)
  49         : RegionView(parent, time_axis, region, spu, basic_color, true)
  50         , _region_relative_time_converter(region->session().tempo_map(), region->position())
  51         , _source_relative_time_converter(region->session().tempo_map(), region->position() - region->start())
  52         , _parameter(param)
  53 {
  54         if (list) {
  55                 assert(list->parameter() == param);
  56                 create_line(list);
  57         }
  58
  59         group->raise_to_top();
  60 }
  61
  62 AutomationRegionView::~AutomationRegionView ()
  63 {
  64         RegionViewGoingAway (this); /* EMIT_SIGNAL */
  65 }
  66
  67 void
  68 AutomationRegionView::init (bool /*wfd*/)
  69 {
  70         _enable_display = false;
  71
  72         RegionView::init (false);
  73
  74         reset_width_dependent_items ((double) _region->length() / samples_per_pixel);
  75
  76         set_height (trackview.current_height());
  77
  78         set_colors ();
  79
  80         _enable_display = true;
  81 }
  82
  83 void
  84 AutomationRegionView::create_line (boost::shared_ptr<ARDOUR::AutomationList> list)
  85 {
  86         _line = boost::shared_ptr<AutomationLine> (new MidiAutomationLine(
  87                                 ARDOUR::EventTypeMap::instance().to_symbol(list->parameter()),
  88                                 trackview, *get_canvas_group(), list,
  89                                 boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region),
  90                                 _parameter,
  91                                 &_source_relative_time_converter));
  92         _line->set_colors();
  93         _line->set_height ((uint32_t)rint(trackview.current_height() - NAME_HIGHLIGHT_SIZE));
  94         _line->set_visibility (AutomationLine::VisibleAspects (AutomationLine::Line|AutomationLine::ControlPoints));
  95         _line->set_maximum_time (_region->length());
  96         _line->set_offset (_region->start ());
  97 }
  98
  99 bool
 100 AutomationRegionView::canvas_group_event (GdkEvent* ev)
 101 {
 102         if (in_destructor) {
 103                 return false;
 104         }
 105
 106         PublicEditor& e = trackview.editor ();
 107
 108         if (ev->type == GDK_BUTTON_PRESS && e.current_mouse_mode() == Editing::MouseObject) {
 109
 110                 /* XXX: icky dcast to Editor */
 111                 e.drags()->set (new EditorRubberbandSelectDrag (dynamic_cast<Editor*> (&e), group), ev);
 112                 e.drags()->start_grab (ev);
 113                 return true;
 114
 115         } else if (ev->type == GDK_MOTION_NOTIFY && e.drags()->active()) {
 116                 /* we probably shouldn't have to handle this here, but... */
 117                 e.drags()->motion_handler(ev, false);
 118                 return true;
 119
 120         } else if (ev->type == GDK_BUTTON_RELEASE) {
 121                 if (e.drags()->end_grab (ev)) {
 122                         return true;
 123                 } else if (e.current_mouse_mode() != Editing::MouseDraw) {
 124                         return false;
 125                 }
 126
 127                 double x = ev->button.x;
 128                 double y = ev->button.y;
 129
 130                 /* convert to item coordinates in the time axis view */
 131                 automation_view()->canvas_display()->canvas_to_item (x, y);
 132
 133                 /* clamp y */
 134                 y = std::max (y, 0.0);
 135                 y = std::min (y, _height - NAME_HIGHLIGHT_SIZE);
 136
 137                 /* guard points only if primary modifier is used */
 138                 bool with_guard_points = Gtkmm2ext::Keyboard::modifier_state_equals (ev->button.state, Gtkmm2ext::Keyboard::PrimaryModifier);
 139                 add_automation_event (ev, e.pixel_to_sample (x) - _region->position() + _region->start(), y, with_guard_points);
 140                 return true;
 141         }
 142
 143         return false;
 144 }
 145
 146 /** @param when Position in frames, where 0 is the start of the region.
 147  *  @param y y position, relative to our TimeAxisView.
 148  */
 149 void
 150 AutomationRegionView::add_automation_event (GdkEvent *, framepos_t when, double y, bool with_guard_points)
 151 {
 152         if (!_line) {
 153                 boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
 154                 boost::shared_ptr<ARDOUR::AutomationControl> ac
 155                                 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
 156                 assert(ac);
 157                 create_line(ac->alist());
 158         }
 159         assert(_line);
 160
 161         AutomationTimeAxisView* const view = automation_view ();
 162
 163         /* compute vertical fractional position */
 164
 165         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
 166         y = 1.0 - (y / h);
 167
 168         /* snap frame */
 169
 170         when = snap_frame_to_frame (when - _region->start ()) + _region->start ();
 171
 172         /* map using line */
 173
 174         double when_d = when;
 175         _line->view_to_model_coord (when_d, y);
 176
 177         view->session()->begin_reversible_command (_("add automation event"));
 178         XMLNode& before = _line->the_list()->get_state();
 179
 180         _line->the_list()->add (when_d, y, with_guard_points, false);
 181
 182         XMLNode& after = _line->the_list()->get_state();
 183
 184         view->session()->commit_reversible_command (
 185                 new MementoCommand<ARDOUR::AutomationList> (_line->memento_command_binder(), &before, &after));
 186
 187         view->session()->set_dirty ();
 188 }
 189
 190 bool
 191 AutomationRegionView::paste (framepos_t                                      pos,
 192                              unsigned                                        paste_count,
 193                              float                                           times,
 194                              boost::shared_ptr<const ARDOUR::AutomationList> slist)
 195 {
 196         AutomationTimeAxisView* const             view    = automation_view();
 197         boost::shared_ptr<ARDOUR::AutomationList> my_list = _line->the_list();
 198
 199         if (view->session()->transport_rolling() && my_list->automation_write()) {
 200                 /* do not paste if this control is in write mode and we're rolling */
 201                 return false;
 202         }
 203
 204         /* add multi-paste offset if applicable */
 205         pos += view->editor().get_paste_offset(
 206                 pos, paste_count, _line->time_converter().to(slist->length()));
 207
 208         const double model_pos = _line->time_converter().from(pos - _line->time_converter().origin_b());
 209
 210         XMLNode& before = my_list->get_state();
 211         my_list->paste(*slist, model_pos, times);
 212         view->session()->add_command(
 213                 new MementoCommand<ARDOUR::AutomationList>(_line->memento_command_binder(), &before, &my_list->get_state()));
 214
 215         return true;
 216 }
 217
 218 void
 219 AutomationRegionView::set_height (double h)
 220 {
 221         RegionView::set_height(h);
 222
 223         if (_line) {
 224                 _line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
 225         }
 226 }
 227
 228 bool
 229 AutomationRegionView::set_position (framepos_t pos, void* src, double* ignored)
 230 {
 231         if (_line) {
 232                 _line->set_maximum_time (_region->length ());
 233         }
 234
 235         return RegionView::set_position(pos, src, ignored);
 236 }
 237
 238
 239 void
 240 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 241 {
 242         RegionView::reset_width_dependent_items(pixel_width);
 243
 244         if (_line) {
 245                 _line->reset();
 246         }
 247 }
 248
 249
 250 void
 251 AutomationRegionView::region_resized (const PBD::PropertyChange& what_changed)
 252 {
 253         RegionView::region_resized (what_changed);
 254
 255         if (what_changed.contains (ARDOUR::Properties::position)) {
 256                 _region_relative_time_converter.set_origin_b(_region->position());
 257         }
 258
 259         if (what_changed.contains (ARDOUR::Properties::start) ||
 260             what_changed.contains (ARDOUR::Properties::position)) {
 261                 _source_relative_time_converter.set_origin_b (_region->position() - _region->start());
 262         }
 263
 264         if (!_line) {
 265                 return;
 266         }
 267
 268         if (what_changed.contains (ARDOUR::Properties::start)) {
 269                 _line->set_offset (_region->start ());
 270         }
 271
 272         if (what_changed.contains (ARDOUR::Properties::length)) {
 273                 _line->set_maximum_time (_region->length());
 274         }
 275 }
 276
 277
 278 void
 279 AutomationRegionView::entered (bool)
 280 {
 281         if (_line) {
 282                 _line->track_entered();
 283         }
 284 }
 285
 286
 287 void
 288 AutomationRegionView::exited ()
 289 {
 290         if (_line) {
 291                 _line->track_exited();
 292         }
 293 }