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