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 "automation_region_view.h"
  25 #include "public_editor.h"
  26
  27 #include "i18n.h"
  28
  29 AutomationRegionView::AutomationRegionView(ArdourCanvas::Group*                      parent,
  30                                            AutomationTimeAxisView&                   time_axis,
  31                                            boost::shared_ptr<ARDOUR::Region>         region,
  32                                            const Evoral::Parameter&                  param,
  33                                            boost::shared_ptr<ARDOUR::AutomationList> list,
  34                                            double                                    spu,
  35                                            Gdk::Color&                               basic_color)
  36         : RegionView(parent, time_axis, region, spu, basic_color)
  37         , _parameter(param)
  38 {
  39         if (list) {
  40                 assert(list->parameter() == param);
  41                 create_line(list);
  42         }
  43
  44         group->signal_event().connect (mem_fun (this, &AutomationRegionView::canvas_event), false);
  45 }
  46
  47 void
  48 AutomationRegionView::init (Gdk::Color& basic_color, bool wfd)
  49 {
  50         _enable_display = false;
  51
  52         RegionView::init(basic_color, false);
  53
  54         compute_colors (basic_color);
  55
  56         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  57
  58         set_height (trackview.current_height());
  59
  60         _region->StateChanged.connect (mem_fun(*this, &AutomationRegionView::region_changed));
  61
  62         set_colors ();
  63
  64         _enable_display = true;
  65 }
  66
  67 void
  68 AutomationRegionView::create_line (boost::shared_ptr<ARDOUR::AutomationList> list)
  69 {
  70         _line = boost::shared_ptr<AutomationLine>(new AutomationLine(
  71                                 ARDOUR::EventTypeMap::instance().to_symbol(list->parameter()),
  72                                 trackview, *get_canvas_group(), list));
  73         _line->set_colors();
  74         _line->set_interpolation(list->interpolation());
  75         _line->show();
  76         _line->show_all_control_points();
  77         _line->set_height ((uint32_t)rint(trackview.current_height() - NAME_HIGHLIGHT_SIZE));
  78 }
  79
  80 bool
  81 AutomationRegionView::canvas_event(GdkEvent* ev)
  82 {
  83         if (ev->type == GDK_BUTTON_RELEASE) {
  84
  85                 const nframes_t when = trackview.editor().pixel_to_frame((nframes_t)ev->button.x)
  86                         - _region->position();
  87                 add_automation_event(ev, when, ev->button.y);
  88         }
  89
  90         return false;
  91 }
  92
  93 void
  94 AutomationRegionView::add_automation_event (GdkEvent* event, nframes_t when, double y)
  95 {
  96         if (!_line) {
  97                 boost::shared_ptr<Evoral::Control> c = _region->control(_parameter, true);
  98                 boost::shared_ptr<ARDOUR::AutomationControl> ac
  99                                 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(c);
 100                 assert(ac);
 101                 create_line(ac->alist());
 102         }
 103         assert(_line);
 104
 105         double x = 0;
 106         AutomationTimeAxisView* const view = automation_view();
 107
 108         view->canvas_display()->w2i (x, y);
 109
 110         /* compute vertical fractional position */
 111
 112         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
 113         y = 1.0 - (y / h);
 114
 115         /* map using line */
 116
 117         _line->view_to_model_y (y);
 118
 119         view->session().begin_reversible_command (_("add automation event"));
 120         XMLNode& before = _line->the_list()->get_state();
 121
 122         _line->the_list()->add (when, y);
 123
 124         XMLNode& after = _line->the_list()->get_state();
 125         view->session().commit_reversible_command (new MementoCommand<ARDOUR::AutomationList>(
 126                         *_line->the_list(), &before, &after));
 127
 128         view->session().set_dirty ();
 129 }
 130
 131 void
 132 AutomationRegionView::set_height (double h)
 133 {
 134         RegionView::set_height(h);
 135
 136         if (_line)
 137                 _line->set_height ((uint32_t)rint(h - NAME_HIGHLIGHT_SIZE));
 138 }
 139
 140 bool
 141 AutomationRegionView::set_position (nframes_t pos, void* src, double* ignored)
 142 {
 143         // Do nothing, region parent will move us
 144         //return false;
 145
 146         return RegionView::set_position(pos, src, ignored); // FIXME: eventually...
 147 }
 148
 149
 150 void
 151 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 152 {
 153         RegionView::reset_width_dependent_items(pixel_width);
 154
 155         if (_line)
 156                 _line->reset();
 157 }
 158
 159
 160 void
 161 AutomationRegionView::region_resized (ARDOUR::Change what_changed)
 162 {
 163         RegionView::region_resized(what_changed);
 164
 165         if (_line)
 166                 _line->reset();
 167 }
 168
 169
 170 void
 171 AutomationRegionView::entered()
 172 {
 173         if (_line)
 174                 _line->track_entered();
 175 }
 176
 177
 178 void
 179 AutomationRegionView::exited()
 180 {
 181         if (_line)
 182                 _line->track_exited();
 183 }
 184