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                                            boost::shared_ptr<ARDOUR::AutomationList> list,
  30                                            double                                    spu,
  31                                            Gdk::Color&                               basic_color)
  32         : RegionView(parent, time_axis, region, spu, basic_color)
  33 {
  34         if (list) {
  35                 _line = boost::shared_ptr<AutomationLine>(new AutomationLine(
  36                                         list->parameter().symbol(), time_axis, *group, list));
  37                 _line->set_colors();
  38                 _line->show();
  39                 _line->show_all_control_points();
  40         }
  41
  42         group->signal_event().connect (mem_fun (this, &AutomationRegionView::canvas_event), false);
  43 }
  44
  45 void
  46 AutomationRegionView::init (Gdk::Color& basic_color, bool wfd)
  47 {
  48         _enable_display = false;
  49
  50         RegionView::init(basic_color, false);
  51
  52         compute_colors (basic_color);
  53
  54         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  55
  56         set_height (trackview.current_height());
  57
  58         _region->StateChanged.connect (mem_fun(*this, &AutomationRegionView::region_changed));
  59
  60         set_colors ();
  61
  62         _enable_display = true;
  63 }
  64
  65 bool
  66 AutomationRegionView::canvas_event(GdkEvent* ev)
  67 {
  68         if (ev->type == GDK_BUTTON_RELEASE) {
  69
  70                 const nframes_t when = trackview.editor.pixel_to_frame((nframes_t)ev->button.x)
  71                         - _region->position();
  72                 add_automation_event(ev, when, ev->button.y);
  73         }
  74
  75         return false;
  76 }
  77
  78 void
  79 AutomationRegionView::add_automation_event (GdkEvent* event, nframes_t when, double y)
  80 {
  81         if (!_line) {
  82                 cerr << "ERROR: AutomationRegionView::add_automation_event called without line" << endl;
  83                 return;
  84         }
  85
  86         double x = 0;
  87         AutomationTimeAxisView* const view = automation_view();
  88
  89         view->canvas_display->w2i (x, y);
  90
  91         /* compute vertical fractional position */
  92
  93         const double h = trackview.current_height() - TimeAxisViewItem::NAME_HIGHLIGHT_SIZE - 2;
  94         y = 1.0 - (y / h);
  95
  96         /* map using line */
  97
  98         _line->view_to_model_y (y);
  99
 100         view->session().begin_reversible_command (_("add automation event"));
 101         XMLNode& before = _line->the_list()->get_state();
 102
 103         _line->the_list()->add (when, y);
 104
 105         XMLNode& after = _line->the_list()->get_state();
 106         view->session().commit_reversible_command (new MementoCommand<ARDOUR::AutomationList>(
 107                         *_line->the_list(), &before, &after));
 108
 109         view->session().set_dirty ();
 110 }
 111
 112
 113 void
 114 AutomationRegionView::set_y_position_and_height (double y, double h)
 115 {
 116         RegionView::set_y_position_and_height(y, h - 1);
 117
 118         if (_line)
 119                 _line->set_y_position_and_height ((uint32_t)y, (uint32_t) rint (h - NAME_HIGHLIGHT_SIZE));
 120 }
 121
 122 bool
 123 AutomationRegionView::set_position (nframes_t pos, void* src, double* ignored)
 124 {
 125         // Do nothing, region parent will move us
 126         //return false;
 127
 128         return RegionView::set_position(pos, src, ignored); // FIXME: eventually...
 129 }
 130
 131
 132 void
 133 AutomationRegionView::reset_width_dependent_items (double pixel_width)
 134 {
 135         RegionView::reset_width_dependent_items(pixel_width);
 136
 137         if (_line)
 138                 _line->reset();
 139 }
 140
 141
 142 void
 143 AutomationRegionView::region_resized (ARDOUR::Change what_changed)
 144 {
 145         RegionView::region_resized(what_changed);
 146
 147         if (_line)
 148                 _line->reset();
 149 }
 150
 151
 152 void
 153 AutomationRegionView::entered()
 154 {
 155         if (_line)
 156                 _line->track_entered();
 157 }
 158
 159
 160 void
 161 AutomationRegionView::exited()
 162 {
 163         if (_line)
 164                 _line->track_exited();
 165 }
 166