gtk2_ardour/canvas-midi-event.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 <iostream>
  21 #include "canvas-midi-event.h"
  22 #include "midi_region_view.h"
  23 #include "public_editor.h"
  24 #include "editing_syms.h"
  25
  26
  27 using namespace std;
  28
  29 namespace Gnome {
  30 namespace Canvas {
  31
  32
  33 CanvasMidiEvent::CanvasMidiEvent(MidiRegionView& region, Item* item)
  34         : _region(region)
  35         , _item(item)
  36         , _state(None)
  37 {
  38 }
  39
  40
  41 bool
  42 CanvasMidiEvent::on_event(GdkEvent* ev)
  43 {
  44         static double last_x, last_y;
  45         double event_x, event_y;
  46
  47         if (_region.get_time_axis_view().editor.current_mouse_mode() != Editing::MouseNote)
  48                 return false;
  49
  50         switch (ev->type) {
  51         /*case GDK_ENTER_NOTIFY:
  52                 cerr << "ENTERED: " << ev->crossing.state << endl;
  53                 if ( (ev->crossing.state & GDK_BUTTON2_MASK) ) {
  54
  55                 }
  56                 break;
  57         */
  58         case GDK_KEY_PRESS:
  59                 cerr << "EVENT KEY PRESS\n"; // doesn't work :/
  60                 break;
  61
  62         case GDK_BUTTON_PRESS:
  63                 _state = Pressed;
  64                 return true;
  65
  66         case GDK_MOTION_NOTIFY:
  67                 event_x = ev->motion.x;
  68                 event_y = ev->motion.y;
  69                 _item->property_parent().get_value()->w2i(event_x, event_y);
  70
  71                 switch (_state) {
  72                 case Pressed:
  73                         _item->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
  74                                         Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
  75                         _state = Dragging;
  76                         last_x = event_x;
  77                         last_y = event_y;
  78                         return true;
  79                 case Dragging:
  80                         if (ev->motion.is_hint) {
  81                                 int t_x;
  82                                 int t_y;
  83                                 GdkModifierType state;
  84                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
  85                                 event_x = t_x;
  86                                 event_y = t_y;
  87                         }
  88
  89                         _item->move(event_x - last_x, event_y - last_y);
  90
  91                         last_x = event_x;
  92                         last_y = event_y;
  93
  94                         return true;
  95                 default:
  96                         break;
  97                 }
  98                 break;
  99
 100         case GDK_BUTTON_RELEASE:
 101                 switch (_state) {
 102                 case Pressed: // Clicked
 103                         _state = None;
 104                         return true;
 105                 case Dragging: // Dropped
 106                         _item->ungrab(ev->button.time);
 107                         _state = None;
 108                         return true;
 109                 default:
 110                         break;
 111                 }
 112
 113         default:
 114                 break;
 115         }
 116
 117         return false;
 118 }
 119
 120 } // namespace Canvas
 121 } // namespace Gnome
 122