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::Group*                      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                                             Gdk::Color const &                        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 }
  64
  65 void
  66 AutomationRegionView::init (Gdk::Color const & basic_color, bool /*wfd*/)
  67 {
  68         _enable_display = false;
  69
  70         RegionView::init(basic_color, false);
  71
  72         compute_colors (basic_color);
  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_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()->canvas_to_item (x, y);
 120
 121                 /* clamp y */
 122                 y = std::max (y, 0.0);
 123                 y = std::min (y, _height - NAME_HIGHLIGHT_SIZE);
 124
 125                 /* guard points only if primary modifier is used */
 126                 bool with_guard_points = Gtkmm2ext::Keyboard::modifier_state_equals (ev->button.state, Gtkmm2ext::Keyboard::PrimaryModifier);
 127                 add_automation_event (ev, trackview.editor().pixel_to_sample (x) - _region->position() + _region->start(), y, with_guard_points);
 128         }
 129
 130         return false;
 131 }
 132
 133 /** @param when Position in frames, where 0 is the start of the region.
 134  *  @param y y position, relative to our TimeAxisView.
 135  */
 136 void
 137 AutomationRegionView::add_automation_event (GdkEvent *, framepos_t when, double y, bool with_guard_points)
 138 {
 139         if (!_line) {
 140                 boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
 141                 boost::shared_ptr<ARDOUR::AutomationControl> ac
 142                                 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
 143                 assert(ac);
 144                 create_line(ac->alist());
 145         }
 146         assert(_line);
 147
 148         AutomationTimeAxisView* const view = automation_view ();
 149
 150         /* compute vertical fractional position */
 151
 152         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
 153         y = 1.0 - (y / h);
 154
 155         /* snap frame */
 156
 157         when = snap_frame_to_frame (when - _region->start ()) + _region->start ();
 158
 159         /* map using line */
 160
 161         double when_d = when;
 162         _line->view_to_model_coord (when_d, y);
 163
 164         view->session()->begin_reversible_command (_("add automation event"));
 165         XMLNode& before = _line->the_list()->get_state();
 166
 167         _line->the_list()->add (when_d, y, with_guard_points);
 168
 169         XMLNode& after = _line->the_list()->get_state();
 170
 171         /* XXX: hack! */
 172         boost::shared_ptr<ARDOUR::MidiRegion> mr = boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region);
 173         assert (mr);
 174
 175         view->session()->commit_reversible_command (
 176                 new MementoCommand<ARDOUR::AutomationList> (new ARDOUR::MidiAutomationListBinder (mr->midi_source(), _parameter), &before, &after)
 177                 );
 178
 179
 180         view->session()->set_dirty ();
 181 }
 182
 183 void
 184 AutomationRegionView::set_height (double h)
 185 {
 186         RegionView::set_height(h);
 187
 188         if (_line) {
 189                 _line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
 190         }
 191 }
 192
 193 bool
 194 AutomationRegionView::set_position (framepos_t pos, void* src, double* ignored)
 195 {
 196         if (_line) {
 197                 _line->set_maximum_time (_region->length ());
 198         }
 199
 200         return RegionView::set_position(pos, src, ignored);
 201 }
 202
 203
 204 void
 205 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 206 {
 207         RegionView::reset_width_dependent_items(pixel_width);
 208
 209         if (_line) {
 210                 _line->reset();
 211         }
 212 }
 213
 214
 215 void
 216 AutomationRegionView::region_resized (const PBD::PropertyChange& what_changed)
 217 {
 218         RegionView::region_resized (what_changed);
 219
 220         if (!_line) {
 221                 return;
 222         }
 223
 224         if (what_changed.contains (ARDOUR::Properties::start)) {
 225                 _line->set_offset (_region->start ());
 226         }
 227
 228         if (what_changed.contains (ARDOUR::Properties::length)) {
 229                 _line->set_maximum_time (_region->length());
 230         }
 231 }
 232
 233
 234 void
 235 AutomationRegionView::entered (bool)
 236 {
 237         if (_line) {
 238                 _line->track_entered();
 239         }
 240 }
 241
 242
 243 void
 244 AutomationRegionView::exited ()
 245 {
 246         if (_line) {
 247                 _line->track_exited();
 248         }
 249 }