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 using ARDOUR::MidiModel;
  29
  30 namespace Gnome {
  31 namespace Canvas {
  32
  33
  34 CanvasMidiEvent::CanvasMidiEvent(MidiRegionView& region, Item* item, const ARDOUR::Note* note, bool copy_note)
  35         : _region(region)
  36         , _item(item)
  37         , _state(None)
  38         , _note((copy_note && note) ? new ARDOUR::Note(*note) : note)
  39         , _own_note(copy_note)
  40         , _selected(false)
  41 {
  42 }
  43
  44
  45 CanvasMidiEvent::~CanvasMidiEvent()
  46 {
  47         if (_own_note)
  48                 delete _note;
  49 }
  50
  51
  52 void
  53 CanvasMidiEvent::selected(bool yn)
  54 {
  55         if (!_note) {
  56                 return;
  57         } else if (yn) {
  58                 set_fill_color(UINT_INTERPOLATE(note_fill_color(_note->velocity()),
  59                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get(), 0.85));
  60                 set_outline_color(ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get());
  61         } else {
  62                 set_fill_color(note_fill_color(_note->velocity()));
  63                 set_outline_color(note_outline_color(_note->velocity()));
  64         }
  65
  66         _selected = yn;
  67 }
  68
  69
  70 bool
  71 CanvasMidiEvent::on_event(GdkEvent* ev)
  72 {
  73         static uint8_t drag_delta_note = 0;
  74         static double  drag_delta_x = 0;
  75         static double last_x, last_y;
  76         double event_x, event_y, dx, dy;
  77         nframes_t event_frame;
  78         bool select_mod;
  79
  80         if (_region.get_time_axis_view().editor.current_mouse_mode() != Editing::MouseNote)
  81                 return false;
  82
  83         switch (ev->type) {
  84         case GDK_KEY_PRESS:
  85                 cerr << "EV KEY PRESS\n";
  86                 if (_note && ev->key.keyval == GDK_Delete) {
  87                         cerr << "EV DELETE KEY\n";
  88                         selected(true);
  89                         _region.start_remove_command();
  90                         _region.command_remove_note(this);
  91                 }
  92                 break;
  93
  94         case GDK_KEY_RELEASE:
  95                 cerr << "EV KEY RELEASE\n";
  96                 if (ev->key.keyval == GDK_Delete) {
  97                         _region.apply_command();
  98                 }
  99                 break;
 100
 101         case GDK_ENTER_NOTIFY:
 102                 _region.note_entered(this);
 103                 _item->grab_focus();
 104                 Keyboard::magic_widget_grab_focus();
 105                 break;
 106
 107         case GDK_LEAVE_NOTIFY:
 108                 Keyboard::magic_widget_drop_focus();
 109                 _region.get_canvas_group()->grab_focus();
 110                 break;
 111
 112         case GDK_BUTTON_PRESS:
 113                 _state = Pressed;
 114                 return true;
 115
 116         case GDK_MOTION_NOTIFY:
 117                 event_x = ev->motion.x;
 118                 event_y = ev->motion.y;
 119                 //cerr << "MOTION @ " << event_x << ", " << event_y << endl;
 120                 _item->property_parent().get_value()->w2i(event_x, event_y);
 121
 122                 switch (_state) {
 123                 case Pressed: // Drag begin
 124                         if (_region.mouse_state() != MidiRegionView::SelectTouchDragging) {
 125                                 _item->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 126                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 127                                 _state = Dragging;
 128                                 last_x = event_x;
 129                                 last_y = event_y;
 130                                 drag_delta_x = 0;
 131                                 drag_delta_note = 0;
 132                                 _region.note_selected(this, true);
 133                         }
 134                         return true;
 135
 136                 case Dragging: // Drag motion
 137                         if (ev->motion.is_hint) {
 138                                 int t_x;
 139                                 int t_y;
 140                                 GdkModifierType state;
 141                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 142                                 event_x = t_x;
 143                                 event_y = t_y;
 144                         }
 145
 146                         // Snap
 147                         event_frame = _region.midi_view()->editor.pixel_to_frame(event_x);
 148                         _region.midi_view()->editor.snap_to(event_frame);
 149                         event_x = _region.midi_view()->editor.frame_to_pixel(event_frame);
 150
 151                         dx = event_x - last_x;
 152                         dy = event_y - last_y;
 153
 154                         last_x = event_x;
 155
 156                         drag_delta_x += dx;
 157
 158                         // Snap to note rows
 159                         if (abs(dy) < _region.midi_stream_view()->note_height()) {
 160                                 dy = 0.0;
 161                         } else {
 162                                 int8_t this_delta_note;
 163                                 if (dy > 0)
 164                                         this_delta_note = (int8_t)ceil(dy / _region.midi_stream_view()->note_height() / 2.0);
 165                                 else
 166                                         this_delta_note = (int8_t)floor(dy / _region.midi_stream_view()->note_height() / 2.0);
 167                                 drag_delta_note -= this_delta_note;
 168                                 dy = _region.midi_stream_view()->note_height() * this_delta_note;
 169                                 last_y = last_y + dy;
 170                         }
 171
 172                         _region.move_selection(dx, dy);
 173
 174                         return true;
 175                 default:
 176                         break;
 177                 }
 178                 break;
 179
 180         case GDK_BUTTON_RELEASE:
 181                 select_mod = (ev->motion.state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK));
 182                 event_x = ev->button.x;
 183                 event_y = ev->button.y;
 184                 _item->property_parent().get_value()->w2i(event_x, event_y);
 185
 186                 switch (_state) {
 187                 case Pressed: // Clicked
 188                         if (_region.midi_view()->editor.current_midi_edit_mode() == Editing::MidiEditSelect) {
 189                                 _state = None;
 190
 191                                 if (_selected && !select_mod && _region.selection_size() > 1)
 192                                         _region.unique_select(this);
 193                                 else if (_selected)
 194                                         _region.note_deselected(this, select_mod);
 195                                 else
 196                                         _region.note_selected(this, select_mod);
 197                         } else if (_region.midi_view()->editor.current_midi_edit_mode() == Editing::MidiEditErase) {
 198                                 _region.start_remove_command();
 199                                 _region.command_remove_note(this);
 200                                 _region.apply_command();
 201                         }
 202
 203                         return true;
 204                 case Dragging: // Dropped
 205                         _item->ungrab(ev->button.time);
 206                         _state = None;
 207
 208                         if (_note)
 209                                 _region.note_dropped(this,
 210                                                 _region.midi_view()->editor.pixel_to_frame(abs(drag_delta_x))
 211                                                                 * ((drag_delta_x < 0.0) ? -1 : 1),
 212                                                 drag_delta_note);
 213                         return true;
 214                 default:
 215                         break;
 216                 }
 217
 218         default:
 219                 break;
 220         }
 221
 222         return false;
 223 }
 224
 225 } // namespace Canvas
 226 } // namespace Gnome
 227