gtk2_ardour/automation_region_view.cc

   1 /*
   2     Copyright (C) 2007 Paul Davis
   3     Author: Dave 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 void
  58 AutomationRegionView::init (Gdk::Color const & basic_color, bool /*wfd*/)
  59 {
  60         _enable_display = false;
  61
  62         RegionView::init(basic_color, false);
  63
  64         compute_colors (basic_color);
  65
  66         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  67
  68         set_height (trackview.current_height());
  69
  70         _region->PropertyChanged.connect (*this, invalidator (*this), ui_bind (&RegionView::region_changed, this, _1), gui_context());
  71
  72         set_colors ();
  73
  74         _enable_display = true;
  75 }
  76
  77 void
  78 AutomationRegionView::create_line (boost::shared_ptr<ARDOUR::AutomationList> list)
  79 {
  80         _line = boost::shared_ptr<AutomationLine> (new MidiAutomationLine(
  81                                 ARDOUR::EventTypeMap::instance().to_symbol(list->parameter()),
  82                                 trackview, *get_canvas_group(), list,
  83                                 boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region),
  84                                 _parameter,
  85                                 &_time_converter));
  86         _line->set_colors();
  87         _line->set_height ((uint32_t)rint(trackview.current_height() - NAME_HIGHLIGHT_SIZE));
  88         _line->show();
  89         _line->show_all_control_points();
  90         _line->set_maximum_time (_region->length());
  91 }
  92
  93 bool
  94 AutomationRegionView::canvas_event(GdkEvent* ev)
  95 {
  96         PublicEditor& e = trackview.editor ();
  97
  98         if (ev->type == GDK_BUTTON_PRESS && e.current_mouse_mode() == Editing::MouseObject) {
  99
 100                 /* XXX: icky dcast to Editor */
 101                 e.drags()->set (new RubberbandSelectDrag (dynamic_cast<Editor*> (&e), group), ev);
 102
 103         } else if (ev->type == GDK_BUTTON_RELEASE) {
 104
 105                 if (trackview.editor().drags()->active() && trackview.editor().drags()->end_grab (ev)) {
 106                         return true;
 107                 }
 108
 109                 double x = ev->button.x;
 110                 double y = ev->button.y;
 111
 112                 /* convert to item coordinates in the time axis view */
 113                 automation_view()->canvas_display()->w2i (x, y);
 114
 115                 /* clamp y */
 116                 y = max (y, 0.0);
 117                 y = min (y, _height - NAME_HIGHLIGHT_SIZE);
 118
 119                 add_automation_event (ev, trackview.editor().pixel_to_frame (x) - _region->position(), y);
 120         }
 121
 122         return false;
 123 }
 124
 125 /** @param when Position in frames, where 0 is the start of the region.
 126  *  @param y y position, relative to our TimeAxisView.
 127  */
 128 void
 129 AutomationRegionView::add_automation_event (GdkEvent *, framepos_t when, double y)
 130 {
 131         if (!_line) {
 132                 boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
 133                 boost::shared_ptr<ARDOUR::AutomationControl> ac
 134                                 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
 135                 assert(ac);
 136                 create_line(ac->alist());
 137         }
 138         assert(_line);
 139
 140         AutomationTimeAxisView* const view = automation_view ();
 141
 142         /* compute vertical fractional position */
 143
 144         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
 145         y = 1.0 - (y / h);
 146
 147         /* map using line */
 148
 149         double when_d = when;
 150         _line->view_to_model_coord (when_d, y);
 151
 152         view->session()->begin_reversible_command (_("add automation event"));
 153         XMLNode& before = _line->the_list()->get_state();
 154
 155         _line->the_list()->add (when_d, y);
 156
 157         XMLNode& after = _line->the_list()->get_state();
 158
 159         /* XXX: hack! */
 160         boost::shared_ptr<ARDOUR::MidiRegion> mr = boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region);
 161         assert (mr);
 162
 163         view->session()->commit_reversible_command (
 164                 new MementoCommand<ARDOUR::AutomationList> (new ARDOUR::MidiAutomationListBinder (mr->midi_source(), _parameter), &before, &after)
 165                 );
 166
 167
 168         view->session()->set_dirty ();
 169 }
 170
 171 void
 172 AutomationRegionView::set_height (double h)
 173 {
 174         RegionView::set_height(h);
 175
 176         if (_line) {
 177                 _line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
 178         }
 179 }
 180
 181 bool
 182 AutomationRegionView::set_position (framepos_t pos, void* src, double* ignored)
 183 {
 184         if (_line) {
 185                 _line->set_maximum_time (_region->length ());
 186         }
 187
 188         return RegionView::set_position(pos, src, ignored);
 189 }
 190
 191
 192 void
 193 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 194 {
 195         RegionView::reset_width_dependent_items(pixel_width);
 196
 197         if (_line) {
 198                 _line->reset();
 199         }
 200 }
 201
 202
 203 void
 204 AutomationRegionView::region_resized (const PBD::PropertyChange& what_changed)
 205 {
 206         RegionView::region_resized(what_changed);
 207
 208         if (_line) {
 209                 _line->reset();
 210                 _line->set_maximum_time (_region->length());
 211         }
 212 }
 213
 214
 215 void
 216 AutomationRegionView::entered (bool)
 217 {
 218         if (_line)
 219                 _line->track_entered();
 220 }
 221
 222
 223 void
 224 AutomationRegionView::exited()
 225 {
 226         if (_line)
 227                 _line->track_exited();
 228 }
 229