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         , _parameter(param)
  51 {
  52         if (list) {
  53                 assert(list->parameter() == param);
  54                 create_line(list);
  55         }
  56
  57         group->raise_to_top();
  58 }
  59
  60 AutomationRegionView::~AutomationRegionView ()
  61 {
  62         RegionViewGoingAway (this); /* EMIT_SIGNAL */
  63 }
  64
  65 void
  66 AutomationRegionView::init (bool /*wfd*/)
  67 {
  68         _enable_display = false;
  69
  70         RegionView::init (false);
  71
  72         reset_width_dependent_items ((double) _region->length() / samples_per_pixel);
  73
  74         set_height (trackview.current_height());
  75
  76         set_colors ();
  77
  78         _enable_display = true;
  79 }
  80
  81 void
  82 AutomationRegionView::create_line (boost::shared_ptr<ARDOUR::AutomationList> list)
  83 {
  84         _line = boost::shared_ptr<AutomationLine> (new MidiAutomationLine(
  85                                 ARDOUR::EventTypeMap::instance().to_symbol(list->parameter()),
  86                                 trackview, *get_canvas_group(), list,
  87                                 boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region),
  88                                 _parameter,
  89                                 &_source_relative_time_converter));
  90         _line->set_colors();
  91         _line->set_height ((uint32_t)rint(trackview.current_height() - NAME_HIGHLIGHT_SIZE));
  92         _line->set_visibility (AutomationLine::VisibleAspects (AutomationLine::Line|AutomationLine::ControlPoints));
  93         _line->set_maximum_time (_region->length());
  94         _line->set_offset (_region->start ());
  95 }
  96
  97 bool
  98 AutomationRegionView::canvas_group_event (GdkEvent* ev)
  99 {
 100         PublicEditor& e = trackview.editor ();
 101
 102         if (ev->type == GDK_BUTTON_PRESS && e.current_mouse_mode() == Editing::MouseObject) {
 103
 104                 /* XXX: icky dcast to Editor */
 105                 e.drags()->set (new EditorRubberbandSelectDrag (dynamic_cast<Editor*> (&e), group), ev);
 106                 e.drags()->start_grab (ev);
 107                 return true;
 108
 109         } else if (ev->type == GDK_MOTION_NOTIFY && e.drags()->active()) {
 110                 /* we probably shouldn't have to handle this here, but... */
 111                 e.drags()->motion_handler(ev, false);
 112                 return true;
 113
 114         } else if (ev->type == GDK_BUTTON_RELEASE) {
 115                 if (e.drags()->end_grab (ev)) {
 116                         return true;
 117                 } else if (e.current_mouse_mode() != Editing::MouseObject &&
 118                            e.current_mouse_mode() == Editing::MouseDraw) {
 119                         return false;
 120                 }
 121
 122                 double x = ev->button.x;
 123                 double y = ev->button.y;
 124
 125                 /* convert to item coordinates in the time axis view */
 126                 automation_view()->canvas_display()->canvas_to_item (x, y);
 127
 128                 /* clamp y */
 129                 y = std::max (y, 0.0);
 130                 y = std::min (y, _height - NAME_HIGHLIGHT_SIZE);
 131
 132                 /* guard points only if primary modifier is used */
 133                 bool with_guard_points = Gtkmm2ext::Keyboard::modifier_state_equals (ev->button.state, Gtkmm2ext::Keyboard::PrimaryModifier);
 134                 add_automation_event (ev, e.pixel_to_sample (x) - _region->position() + _region->start(), y, with_guard_points);
 135                 return true;
 136         }
 137
 138         return false;
 139 }
 140
 141 /** @param when Position in frames, where 0 is the start of the region.
 142  *  @param y y position, relative to our TimeAxisView.
 143  */
 144 void
 145 AutomationRegionView::add_automation_event (GdkEvent *, framepos_t when, double y, bool with_guard_points)
 146 {
 147         if (!_line) {
 148                 boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
 149                 boost::shared_ptr<ARDOUR::AutomationControl> ac
 150                                 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
 151                 assert(ac);
 152                 create_line(ac->alist());
 153         }
 154         assert(_line);
 155
 156         AutomationTimeAxisView* const view = automation_view ();
 157
 158         /* compute vertical fractional position */
 159
 160         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
 161         y = 1.0 - (y / h);
 162
 163         /* snap frame */
 164
 165         when = snap_frame_to_frame (when - _region->start ()) + _region->start ();
 166
 167         /* map using line */
 168
 169         double when_d = when;
 170         _line->view_to_model_coord (when_d, y);
 171
 172         view->session()->begin_reversible_command (_("add automation event"));
 173         XMLNode& before = _line->the_list()->get_state();
 174
 175         _line->the_list()->add (when_d, y, with_guard_points);
 176
 177         XMLNode& after = _line->the_list()->get_state();
 178
 179         /* XXX: hack! */
 180         boost::shared_ptr<ARDOUR::MidiRegion> mr = boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region);
 181         assert (mr);
 182
 183         view->session()->commit_reversible_command (
 184                 new MementoCommand<ARDOUR::AutomationList> (new ARDOUR::MidiAutomationListBinder (mr->midi_source(), _parameter), &before, &after)
 185                 );
 186
 187
 188         view->session()->set_dirty ();
 189 }
 190
 191 void
 192 AutomationRegionView::set_height (double h)
 193 {
 194         RegionView::set_height(h);
 195
 196         if (_line) {
 197                 _line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
 198         }
 199 }
 200
 201 bool
 202 AutomationRegionView::set_position (framepos_t pos, void* src, double* ignored)
 203 {
 204         if (_line) {
 205                 _line->set_maximum_time (_region->length ());
 206         }
 207
 208         return RegionView::set_position(pos, src, ignored);
 209 }
 210
 211
 212 void
 213 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 214 {
 215         RegionView::reset_width_dependent_items(pixel_width);
 216
 217         if (_line) {
 218                 _line->reset();
 219         }
 220 }
 221
 222
 223 void
 224 AutomationRegionView::region_resized (const PBD::PropertyChange& what_changed)
 225 {
 226         RegionView::region_resized (what_changed);
 227
 228         if (!_line) {
 229                 return;
 230         }
 231
 232         if (what_changed.contains (ARDOUR::Properties::start)) {
 233                 _line->set_offset (_region->start ());
 234         }
 235
 236         if (what_changed.contains (ARDOUR::Properties::length)) {
 237                 _line->set_maximum_time (_region->length());
 238         }
 239 }
 240
 241
 242 void
 243 AutomationRegionView::entered (bool)
 244 {
 245         if (_line) {
 246                 _line->track_entered();
 247         }
 248 }
 249
 250
 251 void
 252 AutomationRegionView::exited ()
 253 {
 254         if (_line) {
 255                 _line->track_exited();
 256         }
 257 }