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 #include "keyboard.h"
  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                 Keyboard::magic_widget_grab_focus();
  54                 _item->grab_focus();
  55                 /*if ( (ev->crossing.state & GDK_BUTTON2_MASK) ) {
  56
  57                 }*/
  58                 break;
  59
  60         case GDK_LEAVE_NOTIFY:
  61                 cerr << "LEAVE: " << ev->crossing.state << endl;
  62                 Keyboard::magic_widget_drop_focus();
  63                 //_item->drop_focus();
  64                 break;
  65
  66         case GDK_KEY_PRESS:
  67                 cerr << "EVENT KEY PRESS\n"; // doesn't work :/
  68                 break;
  69
  70         case GDK_BUTTON_PRESS:
  71                 _state = Pressed;
  72                 return true;
  73
  74         case GDK_MOTION_NOTIFY:
  75                 event_x = ev->motion.x;
  76                 event_y = ev->motion.y;
  77                 cerr << "MOTION @ " << event_x << ", " << event_y << endl;
  78                 _item->property_parent().get_value()->w2i(event_x, event_y);
  79
  80                 switch (_state) {
  81                 case Pressed:
  82                         _item->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
  83                                         Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
  84                         _state = Dragging;
  85                         last_x = event_x;
  86                         last_y = event_y;
  87                         return true;
  88                 case Dragging:
  89                         if (ev->motion.is_hint) {
  90                                 int t_x;
  91                                 int t_y;
  92                                 GdkModifierType state;
  93                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
  94                                 event_x = t_x;
  95                                 event_y = t_y;
  96                         }
  97
  98                         _item->move(event_x - last_x, event_y - last_y);
  99
 100                         last_x = event_x;
 101                         last_y = event_y;
 102
 103                         return true;
 104                 default:
 105                         break;
 106                 }
 107                 break;
 108
 109         case GDK_BUTTON_RELEASE:
 110                 switch (_state) {
 111                 case Pressed: // Clicked
 112                         _state = None;
 113                         return true;
 114                 case Dragging: // Dropped
 115                         _item->ungrab(ev->button.time);
 116                         _state = None;
 117                         return true;
 118                 default:
 119                         break;
 120                 }
 121
 122         default:
 123                 break;
 124         }
 125
 126         return false;
 127 }
 128
 129 } // namespace Canvas
 130 } // namespace Gnome
 131