gtk2_ardour/canvas-note-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-note-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 /// dividing the hue circle in 16 parts, hand adjusted for equal look, courtesy Thorsten Wilms
  34 const uint32_t CanvasNoteEvent::midi_channel_colors[16] = {
  35           0xd32d2d00,  0xd36b2d00,  0xd3972d00,  0xd3d12d00,
  36           0xa0d32d00,  0x7dd32d00,  0x2dd45e00,  0x2dd3c400,
  37           0x2da5d300,  0x2d6fd300,  0x432dd300,  0x662dd300,
  38           0x832dd300,  0xa92dd300,  0xd32dbf00,  0xd32d6700
  39         };
  40
  41 CanvasNoteEvent::CanvasNoteEvent(MidiRegionView& region, Item* item,
  42                 const boost::shared_ptr<Evoral::Note> note)
  43         : _region(region)
  44         , _item(item)
  45         , _text(0)
  46         , _channel_selector_widget()
  47         , _state(None)
  48         , _note(note)
  49         , _selected(false)
  50 {
  51 }
  52
  53 CanvasNoteEvent::~CanvasNoteEvent()
  54 {
  55         if (_text) {
  56                 _text->hide();
  57                 delete _text;
  58         }
  59
  60         delete _channel_selector_widget;
  61 }
  62
  63 void
  64 CanvasNoteEvent::move_event(double dx, double dy)
  65 {
  66         _item->move(dx, dy);
  67         if (_text) {
  68                 _text->hide();
  69                 _text->move(dx, dy);
  70                 _text->show();
  71         }
  72 }
  73
  74 void
  75 CanvasNoteEvent::show_velocity()
  76 {
  77         hide_velocity();
  78         _text = new Text(*(_item->property_parent()));
  79         _text->property_x() = (x1() + x2()) /2;
  80         _text->property_y() = (y1() + y2()) /2;
  81         ostringstream velo(ios::ate);
  82         velo << int(_note->velocity());
  83         _text->property_text() = velo.str();
  84         _text->property_justification() = Gtk::JUSTIFY_CENTER;
  85         _text->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiNoteVelocityText.get();
  86         _text->show();
  87         _text->raise_to_top();
  88 }
  89
  90 void
  91 CanvasNoteEvent::hide_velocity()
  92 {
  93         if (_text) {
  94                 _text->hide();
  95                 delete _text;
  96         }
  97         _text = 0;
  98 }
  99
 100 void
 101 CanvasNoteEvent::on_channel_selection_change(uint16_t selection)
 102 {
 103         // make note change its color if its channel is not marked active
 104         if ( (selection & (1 << _note->channel())) == 0 ) {
 105                 set_fill_color(ARDOUR_UI::config()->canvasvar_MidiNoteInactiveChannel.get());
 106                 set_outline_color(calculate_outline(ARDOUR_UI::config()->canvasvar_MidiNoteInactiveChannel.get()));
 107         } else {
 108                 // set the color according to the notes selection state
 109                 selected(_selected);
 110         }
 111         // this forces the item to update..... maybe slow...
 112         _item->hide();
 113         _item->show();
 114 }
 115
 116 void
 117 CanvasNoteEvent::on_channel_change(uint8_t channel)
 118 {
 119         _region.note_selected(this, true);
 120         hide_channel_selector();
 121         _region.change_channel(channel);
 122 }
 123
 124 void
 125 CanvasNoteEvent::show_channel_selector(void)
 126 {
 127         if (_channel_selector_widget == 0) {
 128                 cerr << "Note has channel: " << int(_note->channel()) << endl;
 129                 SingleMidiChannelSelector* _channel_selector = new SingleMidiChannelSelector(_note->channel());
 130                 _channel_selector->show_all();
 131                 _channel_selector->channel_selected.connect(
 132                         sigc::mem_fun(this, &CanvasNoteEvent::on_channel_change));
 133
 134                 _channel_selector_widget =
 135                         new Widget(*(_item->property_parent()),
 136                                    x1(),
 137                                    y2() + 2,
 138                                    (Gtk::Widget &) *_channel_selector);
 139
 140                 _channel_selector_widget->hide();
 141                 _channel_selector_widget->property_height() = 100;
 142                 _channel_selector_widget->property_width() = 100;
 143                 _channel_selector_widget->raise_to_top();
 144                 _channel_selector_widget->show();
 145         } else {
 146                 hide_channel_selector();
 147         }
 148 }
 149
 150 void
 151 CanvasNoteEvent::hide_channel_selector(void)
 152 {
 153         if (_channel_selector_widget) {
 154                 _channel_selector_widget->hide();
 155                 delete _channel_selector_widget;
 156                 _channel_selector_widget = 0;
 157         }
 158 }
 159
 160 void
 161 CanvasNoteEvent::selected(bool yn)
 162 {
 163         if (!_note) {
 164                 return;
 165         } else if (yn) {
 166                 set_fill_color(UINT_INTERPOLATE(meter_style_fill_color(_note->velocity()),
 167                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(), 0.1));
 168                 set_outline_color(calculate_outline(ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get()));
 169                 show_velocity();
 170         } else {
 171                 set_fill_color(meter_style_fill_color(_note->velocity()));
 172                 set_outline_color(meter_style_outline_color(_note->velocity()));
 173                 hide_velocity();
 174         }
 175
 176         _selected = yn;
 177 }
 178
 179
 180 bool
 181 CanvasNoteEvent::on_event(GdkEvent* ev)
 182 {
 183         MidiStreamView *streamview = _region.midi_stream_view();
 184         static uint8_t drag_delta_note = 0;
 185         static double  drag_delta_x = 0;
 186         static double last_x, last_y;
 187         double event_x, event_y, dx, dy;
 188         bool select_mod;
 189         uint8_t d_velocity = 10;
 190
 191         if (_region.get_time_axis_view().editor.current_mouse_mode() != Editing::MouseNote)
 192                 return false;
 193
 194         switch (ev->type) {
 195         case GDK_SCROLL:
 196                 if (Keyboard::modifier_state_equals (ev->scroll.state, Keyboard::Level4Modifier)) {
 197                         d_velocity = 1;
 198                 }
 199
 200                 if (ev->scroll.direction == GDK_SCROLL_UP) {
 201                         _region.change_velocity(this, d_velocity, true);
 202                         return true;
 203                 } else if (ev->scroll.direction == GDK_SCROLL_DOWN) {
 204                         _region.change_velocity(this, -d_velocity, true);
 205                         return true;
 206                 } else {
 207                         return false;
 208                 }
 209
 210         case GDK_KEY_PRESS:
 211                 if (_note && ev->key.keyval == GDK_Delete) {
 212                         selected(true);
 213                         _region.start_delta_command();
 214                         _region.command_remove_note(this);
 215                 }
 216                 break;
 217
 218         case GDK_KEY_RELEASE:
 219                 if (ev->key.keyval == GDK_Delete) {
 220                         _region.apply_command();
 221                 }
 222                 break;
 223
 224         case GDK_ENTER_NOTIFY:
 225                 _region.note_entered(this);
 226                 _item->grab_focus();
 227                 show_velocity();
 228                 Keyboard::magic_widget_grab_focus();
 229                 break;
 230
 231         case GDK_LEAVE_NOTIFY:
 232                 Keyboard::magic_widget_drop_focus();
 233                 if (! selected()) {
 234                         hide_velocity();
 235                 }
 236                 _region.get_canvas_group()->grab_focus();
 237                 break;
 238
 239         case GDK_BUTTON_PRESS:
 240                 if (ev->button.button == 1) {
 241                         _state = Pressed;
 242                 } else if (ev->button.button == 3) {
 243                         show_channel_selector();
 244                 }
 245                 return true;
 246
 247         case GDK_MOTION_NOTIFY:
 248                 event_x = ev->motion.x;
 249                 event_y = ev->motion.y;
 250
 251                 switch (_state) {
 252                 case Pressed: // Drag begin
 253                         if (_region.midi_view()->editor.current_midi_edit_mode() == Editing::MidiEditSelect
 254                                         && _region.mouse_state() != MidiRegionView::SelectTouchDragging
 255                                         && _region.mouse_state() != MidiRegionView::EraseTouchDragging) {
 256                                 _item->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 257                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 258                                 _state = Dragging;
 259                                 _item->property_parent().get_value()->w2i(event_x, event_y);
 260                                 event_x = _region.snap_to_pixel(event_x);
 261                                 last_x = event_x;
 262                                 last_y = event_y;
 263                                 drag_delta_x = 0;
 264                                 drag_delta_note = 0;
 265                                 _region.note_selected(this, true);
 266                         }
 267                         return true;
 268
 269                 case Dragging: // Drag motion
 270                         if (ev->motion.is_hint) {
 271                                 int t_x;
 272                                 int t_y;
 273                                 GdkModifierType state;
 274                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 275                                 event_x = t_x;
 276                                 event_y = t_y;
 277                         }
 278                         _item->property_parent().get_value()->w2i(event_x, event_y);
 279
 280                         // Snap
 281                         event_x = _region.snap_to_pixel(event_x);
 282
 283                         dx = event_x - last_x;
 284                         dy = event_y - last_y;
 285
 286                         last_x = event_x;
 287
 288                         drag_delta_x += dx;
 289
 290                         // Snap to note rows
 291                         if (abs(dy) < streamview->note_height()) {
 292                                 dy = 0.0;
 293                         } else {
 294                                 int8_t this_delta_note;
 295                                 if (dy > 0) {
 296                                         this_delta_note = (int8_t)ceil(dy / streamview->note_height() / 2.0);
 297                                 } else {
 298                                         this_delta_note = (int8_t)floor(dy / streamview->note_height() / 2.0);
 299                                 }
 300                                 drag_delta_note -= this_delta_note;
 301                                 dy = streamview->note_height() * this_delta_note;
 302                                 last_y = last_y + dy;
 303                         }
 304
 305                         _region.move_selection(dx, dy);
 306
 307                         return true;
 308                 default:
 309                         break;
 310                 }
 311                 break;
 312
 313         case GDK_BUTTON_RELEASE:
 314                 select_mod = (ev->motion.state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK));
 315                 event_x = ev->button.x;
 316                 event_y = ev->button.y;
 317                 _item->property_parent().get_value()->w2i(event_x, event_y);
 318
 319                 if (ev->button.button == 3) {
 320                         return true;
 321                 }
 322
 323                 switch (_state) {
 324                 case Pressed: // Clicked
 325                         if (_region.midi_view()->editor.current_midi_edit_mode() == Editing::MidiEditSelect) {
 326                                 _state = None;
 327
 328                                 if (_selected && !select_mod && _region.selection_size() > 1)
 329                                         _region.unique_select(this);
 330                                 else if (_selected)
 331                                         _region.note_deselected(this, select_mod);
 332                                 else
 333                                         _region.note_selected(this, select_mod);
 334                         } else if (_region.midi_view()->editor.current_midi_edit_mode() == Editing::MidiEditErase) {
 335                                 _region.start_delta_command();
 336                                 _region.command_remove_note(this);
 337                                 _region.apply_command();
 338                         }
 339
 340                         return true;
 341                 case Dragging: // Dropped
 342                         _item->ungrab(ev->button.time);
 343                         _state = None;
 344
 345                         if (_note)
 346                                 _region.note_dropped(this,
 347                                                 _region.midi_view()->editor.pixel_to_frame(abs(drag_delta_x))
 348                                                                 * ((drag_delta_x < 0.0) ? -1 : 1),
 349                                                 drag_delta_note);
 350                         return true;
 351                 default:
 352                         break;
 353                 }
 354
 355         default:
 356                 break;
 357         }
 358
 359         return false;
 360 }
 361
 362 } // namespace Canvas
 363 } // namespace Gnome
 364