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->Event.connect (sigc::mem_fun (this, &AutomationRegionView::canvas_event));
  58         group->raise_to_top();
  59 }
  60
  61 AutomationRegionView::~AutomationRegionView ()
  62 {
  63         RegionViewGoingAway (this); /* EMIT_SIGNAL */
  64 }
  65
  66 void
  67 AutomationRegionView::init (bool /*wfd*/)
  68 {
  69         _enable_display = false;
  70
  71         RegionView::init (false);
  72
  73         reset_width_dependent_items ((double) _region->length() / samples_per_pixel);
  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->set_visibility (AutomationLine::VisibleAspects (AutomationLine::Line|AutomationLine::ControlPoints));
  94         _line->set_maximum_time (_region->length());
  95         _line->set_offset (_region->start ());
  96 }
  97
  98 bool
  99 AutomationRegionView::canvas_event (GdkEvent* ev)
 100 {
 101         PublicEditor& e = trackview.editor ();
 102
 103         if (ev->type == GDK_BUTTON_PRESS && e.current_mouse_mode() == Editing::MouseObject) {
 104
 105                 /* XXX: icky dcast to Editor */
 106                 e.drags()->set (new EditorRubberbandSelectDrag (dynamic_cast<Editor*> (&e), group), ev);
 107
 108         } else if (ev->type == GDK_BUTTON_RELEASE) {
 109
 110                 if (trackview.editor().drags()->active() && trackview.editor().drags()->end_grab (ev)) {
 111                         return true;
 112                 }
 113
 114                 double x = ev->button.x;
 115                 double y = ev->button.y;
 116
 117                 /* convert to item coordinates in the time axis view */
 118                 automation_view()->canvas_display()->canvas_to_item (x, y);
 119
 120                 /* clamp y */
 121                 y = std::max (y, 0.0);
 122                 y = std::min (y, _height - NAME_HIGHLIGHT_SIZE);
 123
 124                 /* guard points only if primary modifier is used */
 125                 bool with_guard_points = Gtkmm2ext::Keyboard::modifier_state_equals (ev->button.state, Gtkmm2ext::Keyboard::PrimaryModifier);
 126                 add_automation_event (ev, trackview.editor().pixel_to_sample (x) - _region->position() + _region->start(), y, with_guard_points);
 127         }
 128
 129         return false;
 130 }
 131
 132 /** @param when Position in frames, where 0 is the start of the region.
 133  *  @param y y position, relative to our TimeAxisView.
 134  */
 135 void
 136 AutomationRegionView::add_automation_event (GdkEvent *, framepos_t when, double y, bool with_guard_points)
 137 {
 138         if (!_line) {
 139                 boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
 140                 boost::shared_ptr<ARDOUR::AutomationControl> ac
 141                                 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
 142                 assert(ac);
 143                 create_line(ac->alist());
 144         }
 145         assert(_line);
 146
 147         AutomationTimeAxisView* const view = automation_view ();
 148
 149         /* compute vertical fractional position */
 150
 151         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
 152         y = 1.0 - (y / h);
 153
 154         /* snap frame */
 155
 156         when = snap_frame_to_frame (when - _region->start ()) + _region->start ();
 157
 158         /* map using line */
 159
 160         double when_d = when;
 161         _line->view_to_model_coord (when_d, y);
 162
 163         view->session()->begin_reversible_command (_("add automation event"));
 164         XMLNode& before = _line->the_list()->get_state();
 165
 166         _line->the_list()->add (when_d, y, with_guard_points);
 167
 168         XMLNode& after = _line->the_list()->get_state();
 169
 170         /* XXX: hack! */
 171         boost::shared_ptr<ARDOUR::MidiRegion> mr = boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region);
 172         assert (mr);
 173
 174         view->session()->commit_reversible_command (
 175                 new MementoCommand<ARDOUR::AutomationList> (new ARDOUR::MidiAutomationListBinder (mr->midi_source(), _parameter), &before, &after)
 176                 );
 177
 178
 179         view->session()->set_dirty ();
 180 }
 181
 182 void
 183 AutomationRegionView::set_height (double h)
 184 {
 185         RegionView::set_height(h);
 186
 187         if (_line) {
 188                 _line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
 189         }
 190 }
 191
 192 bool
 193 AutomationRegionView::set_position (framepos_t pos, void* src, double* ignored)
 194 {
 195         if (_line) {
 196                 _line->set_maximum_time (_region->length ());
 197         }
 198
 199         return RegionView::set_position(pos, src, ignored);
 200 }
 201
 202
 203 void
 204 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 205 {
 206         RegionView::reset_width_dependent_items(pixel_width);
 207
 208         if (_line) {
 209                 _line->reset();
 210         }
 211 }
 212
 213
 214 void
 215 AutomationRegionView::region_resized (const PBD::PropertyChange& what_changed)
 216 {
 217         RegionView::region_resized (what_changed);
 218
 219         if (!_line) {
 220                 return;
 221         }
 222
 223         if (what_changed.contains (ARDOUR::Properties::start)) {
 224                 _line->set_offset (_region->start ());
 225         }
 226
 227         if (what_changed.contains (ARDOUR::Properties::length)) {
 228                 _line->set_maximum_time (_region->length());
 229         }
 230 }
 231
 232
 233 void
 234 AutomationRegionView::entered (bool)
 235 {
 236         if (_line) {
 237                 _line->track_entered();
 238         }
 239 }
 240
 241
 242 void
 243 AutomationRegionView::exited ()
 244 {
 245         if (_line) {
 246                 _line->track_exited();
 247         }
 248 }