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 "automation_region_view.h"
  31 #include "editing.h"
  32 #include "editor.h"
  33 #include "editor_drag.h"
  34 #include "gui_thread.h"
  35 #include "midi_automation_line.h"
  36 #include "public_editor.h"
  37
  38 #include "i18n.h"
  39
  40 AutomationRegionView::AutomationRegionView (ArdourCanvas::Group*                      parent,
  41                                             AutomationTimeAxisView&                   time_axis,
  42                                             boost::shared_ptr<ARDOUR::Region>         region,
  43                                             const Evoral::Parameter&                  param,
  44                                             boost::shared_ptr<ARDOUR::AutomationList> list,
  45                                             double                                    spu,
  46                                             Gdk::Color const &                        basic_color)
  47         : RegionView(parent, time_axis, region, spu, basic_color, true)
  48         , _parameter(param)
  49 {
  50         if (list) {
  51                 assert(list->parameter() == param);
  52                 create_line(list);
  53         }
  54
  55         group->Event.connect (sigc::mem_fun (this, &AutomationRegionView::canvas_event));
  56         group->raise_to_top();
  57 }
  58
  59 AutomationRegionView::~AutomationRegionView ()
  60 {
  61 }
  62
  63 void
  64 AutomationRegionView::init (Gdk::Color const & basic_color, bool /*wfd*/)
  65 {
  66         _enable_display = false;
  67
  68         RegionView::init(basic_color, false);
  69
  70         compute_colors (basic_color);
  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_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
 107         } else if (ev->type == GDK_BUTTON_RELEASE) {
 108
 109                 if (trackview.editor().drags()->active() && trackview.editor().drags()->end_grab (ev)) {
 110                         return true;
 111                 }
 112
 113                 double x = ev->button.x;
 114                 double y = ev->button.y;
 115
 116                 /* convert to item coordinates in the time axis view */
 117                 automation_view()->canvas_display()->canvas_to_item (x, y);
 118
 119                 /* clamp y */
 120                 y = std::max (y, 0.0);
 121                 y = std::min (y, _height - NAME_HIGHLIGHT_SIZE);
 122
 123                 add_automation_event (ev, trackview.editor().pixel_to_sample (x) - _region->position() + _region->start(), y);
 124         }
 125
 126         return false;
 127 }
 128
 129 /** @param when Position in frames, where 0 is the start of the region.
 130  *  @param y y position, relative to our TimeAxisView.
 131  */
 132 void
 133 AutomationRegionView::add_automation_event (GdkEvent *, framepos_t when, double y)
 134 {
 135         if (!_line) {
 136                 boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
 137                 boost::shared_ptr<ARDOUR::AutomationControl> ac
 138                                 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
 139                 assert(ac);
 140                 create_line(ac->alist());
 141         }
 142         assert(_line);
 143
 144         AutomationTimeAxisView* const view = automation_view ();
 145
 146         /* compute vertical fractional position */
 147
 148         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
 149         y = 1.0 - (y / h);
 150
 151         /* snap frame */
 152
 153         when = snap_frame_to_frame (when - _region->start ()) + _region->start ();
 154
 155         /* map using line */
 156
 157         double when_d = when;
 158         _line->view_to_model_coord (when_d, y);
 159
 160         view->session()->begin_reversible_command (_("add automation event"));
 161         XMLNode& before = _line->the_list()->get_state();
 162
 163         _line->the_list()->add (when_d, y);
 164
 165         XMLNode& after = _line->the_list()->get_state();
 166
 167         /* XXX: hack! */
 168         boost::shared_ptr<ARDOUR::MidiRegion> mr = boost::dynamic_pointer_cast<ARDOUR::MidiRegion> (_region);
 169         assert (mr);
 170
 171         view->session()->commit_reversible_command (
 172                 new MementoCommand<ARDOUR::AutomationList> (new ARDOUR::MidiAutomationListBinder (mr->midi_source(), _parameter), &before, &after)
 173                 );
 174
 175
 176         view->session()->set_dirty ();
 177 }
 178
 179 void
 180 AutomationRegionView::set_height (double h)
 181 {
 182         RegionView::set_height(h);
 183
 184         if (_line) {
 185                 _line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
 186         }
 187 }
 188
 189 bool
 190 AutomationRegionView::set_position (framepos_t pos, void* src, double* ignored)
 191 {
 192         if (_line) {
 193                 _line->set_maximum_time (_region->length ());
 194         }
 195
 196         return RegionView::set_position(pos, src, ignored);
 197 }
 198
 199
 200 void
 201 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 202 {
 203         RegionView::reset_width_dependent_items(pixel_width);
 204
 205         if (_line) {
 206                 _line->reset();
 207         }
 208 }
 209
 210
 211 void
 212 AutomationRegionView::region_resized (const PBD::PropertyChange& what_changed)
 213 {
 214         RegionView::region_resized (what_changed);
 215
 216         if (!_line) {
 217                 return;
 218         }
 219
 220         if (what_changed.contains (ARDOUR::Properties::start)) {
 221                 _line->set_offset (_region->start ());
 222         }
 223
 224         if (what_changed.contains (ARDOUR::Properties::length)) {
 225                 _line->set_maximum_time (_region->length());
 226         }
 227 }
 228
 229
 230 void
 231 AutomationRegionView::entered (bool)
 232 {
 233         if (_line) {
 234                 _line->track_entered();
 235         }
 236 }
 237
 238
 239 void
 240 AutomationRegionView::exited ()
 241 {
 242         if (_line) {
 243                 _line->track_exited();
 244         }
 245 }