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