gtk2_ardour/redirect_automation_time_axis.cc

   1 /*
   2     Copyright (C) 2003 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <ardour/redirect.h>
  21 #include <ardour/session.h>
  22 #include <cstdlib>
  23 #include <pbd/memento_command.h>
  24
  25 #include "redirect_automation_time_axis.h"
  26 #include "automation_line.h"
  27 #include "canvas_impl.h"
  28
  29 #include "i18n.h"
  30
  31 using namespace ARDOUR;
  32 using namespace PBD;
  33 using namespace Gtk;
  34
  35 RedirectAutomationTimeAxisView::RedirectAutomationTimeAxisView (Session& s, boost::shared_ptr<Route> r,
  36                                                                 PublicEditor& e, TimeAxisView& parent, Canvas& canvas, std::string n,
  37                                                                 uint32_t prt, Redirect& rd, string state_name)
  38
  39         : AxisView (s),
  40           AutomationTimeAxisView (s, r, e, parent, canvas, n, state_name, rd.name()),
  41           redirect (rd),
  42           port (prt)
  43
  44 {
  45         char buf[32];
  46         xml_node = 0;
  47         _marked_for_display = false;
  48
  49         ensure_xml_node ();
  50
  51         XMLNodeList kids;
  52         XMLNodeConstIterator iter;
  53
  54         kids = xml_node->children ();
  55
  56         snprintf (buf, sizeof(buf), "Port_%" PRIu32, port);
  57
  58         for (iter = kids.begin(); iter != kids.end(); ++iter) {
  59                 if ((*iter)->name() == buf) {
  60
  61                         XMLProperty *shown = (*iter)->property("shown_editor");
  62
  63                         if (shown && string_is_affirmative (shown->value())) {
  64                                 _marked_for_display = true;
  65                         }
  66                         break;
  67                 }
  68         }
  69 }
  70
  71 RedirectAutomationTimeAxisView::~RedirectAutomationTimeAxisView ()
  72 {
  73 }
  74
  75 void
  76 RedirectAutomationTimeAxisView::add_automation_event (ArdourCanvas::Item* item, GdkEvent* event, nframes_t when, double y)
  77 {
  78         double x = 0;
  79
  80         canvas_display->w2i (x, y);
  81
  82         /* compute vertical fractional position */
  83
  84         if (y < 0)
  85                 y = 0;
  86         else if (y > height)
  87                 y = height;
  88
  89         y = 1.0 - (y / height);
  90
  91         /* map to model space */
  92
  93         if (!lines.empty()) {
  94                 AutomationList& alist (redirect.automation_list(port));
  95                 string description = _("add automation event to ");
  96                 description += redirect.describe_parameter (port);
  97
  98                 lines.front()->view_to_model_y (y);
  99
 100                 _session.begin_reversible_command (description);
 101                 XMLNode &before = alist.get_state();
 102                 alist.add (when, y);
 103                 XMLNode &after = alist.get_state();
 104                 _session.add_command(new MementoCommand<AutomationList>(alist, &before, &after));
 105                 _session.commit_reversible_command ();
 106                 _session.set_dirty ();
 107         }
 108 }
 109
 110 void
 111 RedirectAutomationTimeAxisView::ensure_xml_node ()
 112 {
 113         if (xml_node == 0) {
 114                 if ((xml_node = redirect.extra_xml ("GUI")) == 0) {
 115                         xml_node = new XMLNode ("GUI");
 116                         redirect.add_extra_xml (*xml_node);
 117                 }
 118         }
 119 }
 120
 121 guint32
 122 RedirectAutomationTimeAxisView::show_at (double y, int& nth, Gtk::VBox *parent)
 123 {
 124         ensure_xml_node ();
 125         update_extra_xml_shown (true);
 126
 127         return TimeAxisView::show_at (y, nth, parent);
 128 }
 129
 130 void
 131 RedirectAutomationTimeAxisView::hide ()
 132 {
 133         ensure_xml_node ();
 134         update_extra_xml_shown (false);
 135
 136         TimeAxisView::hide ();
 137 }
 138
 139
 140 void
 141 RedirectAutomationTimeAxisView::update_extra_xml_shown (bool editor_shown)
 142 {
 143         char buf[32];
 144
 145         XMLNodeList nlist = xml_node->children ();
 146         XMLNodeConstIterator i;
 147         XMLNode * port_node = 0;
 148
 149         snprintf (buf, sizeof(buf), "Port_%" PRIu32, port);
 150
 151         for (i = nlist.begin(); i != nlist.end(); ++i) {
 152                 if ((*i)->name() == buf) {
 153                         port_node = (*i);
 154                         break;
 155                 }
 156         }
 157
 158         if (!port_node) {
 159                 port_node = new XMLNode(buf);
 160                 xml_node->add_child_nocopy(*port_node);
 161         }
 162
 163         port_node->add_property ("shown_editor", editor_shown ? "yes": "no");
 164
 165 }
 166
 167 void
 168 RedirectAutomationTimeAxisView::set_automation_state (AutoState state)
 169 {
 170         if (!ignore_state_request) {
 171                 redirect.automation_list (port).set_automation_state (state);
 172         }
 173 }