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 "automation_region_view.h"
  22 #include "public_editor.h"
  23
  24 #include "i18n.h"
  25
  26 AutomationRegionView::AutomationRegionView(ArdourCanvas::Group*                      parent,
  27                                            AutomationTimeAxisView&                   time_axis,
  28                                            boost::shared_ptr<ARDOUR::Region>         region,
  29                                            const ARDOUR::Parameter&                  param,
  30                                            boost::shared_ptr<ARDOUR::AutomationList> list,
  31                                            double                                    spu,
  32                                            Gdk::Color&                               basic_color)
  33         : RegionView(parent, time_axis, region, spu, basic_color)
  34         , _parameter(param)
  35 {
  36         if (list) {
  37                 assert(list->parameter() == param);
  38                 create_line(list);
  39         }
  40
  41         group->signal_event().connect (mem_fun (this, &AutomationRegionView::canvas_event), false);
  42 }
  43
  44 void
  45 AutomationRegionView::init (Gdk::Color& basic_color, bool wfd)
  46 {
  47         _enable_display = false;
  48
  49         RegionView::init(basic_color, false);
  50
  51         compute_colors (basic_color);
  52
  53         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  54
  55         set_height (trackview.current_height());
  56
  57         _region->StateChanged.connect (mem_fun(*this, &AutomationRegionView::region_changed));
  58
  59         set_colors ();
  60
  61         _enable_display = true;
  62 }
  63
  64 void
  65 AutomationRegionView::create_line (boost::shared_ptr<ARDOUR::AutomationList> list)
  66 {
  67         _line = boost::shared_ptr<AutomationLine>(new AutomationLine(
  68                                 list->parameter().symbol(), trackview, *get_canvas_group(), list));
  69         _line->set_colors();
  70         _line->show();
  71         _line->show_all_control_points();
  72         _line->set_height ((uint32_t)rint(trackview.current_height() - NAME_HIGHLIGHT_SIZE));
  73 }
  74
  75 bool
  76 AutomationRegionView::canvas_event(GdkEvent* ev)
  77 {
  78         if (ev->type == GDK_BUTTON_RELEASE) {
  79
  80                 const nframes_t when = trackview.editor.pixel_to_frame((nframes_t)ev->button.x)
  81                         - _region->position();
  82                 add_automation_event(ev, when, ev->button.y);
  83         }
  84
  85         return false;
  86 }
  87
  88 void
  89 AutomationRegionView::add_automation_event (GdkEvent* event, nframes_t when, double y)
  90 {
  91         if (!_line) {
  92                 boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
  93                 boost::shared_ptr<ARDOUR::AutomationControl> ac
  94                                 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
  95                 assert(ac);
  96                 create_line(ac->alist());
  97         }
  98         assert(_line);
  99
 100         double x = 0;
 101         AutomationTimeAxisView* const view = automation_view();
 102
 103         view->canvas_display->w2i (x, y);
 104
 105         /* compute vertical fractional position */
 106
 107         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
 108         y = 1.0 - (y / h);
 109
 110         /* map using line */
 111
 112         _line->view_to_model_y (y);
 113
 114         view->session().begin_reversible_command (_("add automation event"));
 115         XMLNode& before = _line->the_list()->get_state();
 116
 117         _line->the_list()->add (when, y);
 118
 119         XMLNode& after = _line->the_list()->get_state();
 120         view->session().commit_reversible_command (new MementoCommand<ARDOUR::AutomationList>(
 121                         *_line->the_list(), &before, &after));
 122
 123         view->session().set_dirty ();
 124 }
 125
 126 void
 127 AutomationRegionView::set_height (double h)
 128 {
 129         RegionView::set_height(h);
 130
 131         if (_line)
 132                 _line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
 133 }
 134
 135 bool
 136 AutomationRegionView::set_position (nframes_t pos, void* src, double* ignored)
 137 {
 138         // Do nothing, region parent will move us
 139         //return false;
 140
 141         return RegionView::set_position(pos, src, ignored); // FIXME: eventually...
 142 }
 143
 144
 145 void
 146 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 147 {
 148         RegionView::reset_width_dependent_items(pixel_width);
 149
 150         if (_line)
 151                 _line->reset();
 152 }
 153
 154
 155 void
 156 AutomationRegionView::region_resized (ARDOUR::Change what_changed)
 157 {
 158         RegionView::region_resized(what_changed);
 159
 160         if (_line)
 161                 _line->reset();
 162 }
 163
 164
 165 void
 166 AutomationRegionView::entered()
 167 {
 168         if (_line)
 169                 _line->track_entered();
 170 }
 171
 172
 173 void
 174 AutomationRegionView::exited()
 175 {
 176         if (_line)
 177                 _line->track_exited();
 178 }
 179