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
  22 #include "gtkmm2ext/keyboard.h"
  23
  24 #include "canvas-note-event.h"
  25 #include "midi_region_view.h"
  26 #include "public_editor.h"
  27 #include "editing_syms.h"
  28 #include "keyboard.h"
  29
  30 using namespace std;
  31 using namespace Gtkmm2ext;
  32 using ARDOUR::MidiModel;
  33
  34 namespace Gnome {
  35 namespace Canvas {
  36
  37 PBD::Signal1<void,CanvasNoteEvent*> CanvasNoteEvent::CanvasNoteEventDeleted;
  38
  39 /// dividing the hue circle in 16 parts, hand adjusted for equal look, courtesy Thorsten Wilms
  40 const uint32_t CanvasNoteEvent::midi_channel_colors[16] = {
  41           0xd32d2dff,  0xd36b2dff,  0xd3972dff,  0xd3d12dff,
  42           0xa0d32dff,  0x7dd32dff,  0x2dd45eff,  0x2dd3c4ff,
  43           0x2da5d3ff,  0x2d6fd3ff,  0x432dd3ff,  0x662dd3ff,
  44           0x832dd3ff,  0xa92dd3ff,  0xd32dbfff,  0xd32d67ff
  45         };
  46
  47 CanvasNoteEvent::CanvasNoteEvent(MidiRegionView& region, Item* item, const boost::shared_ptr<NoteType> note)
  48         : _region(region)
  49         , _item(item)
  50         , _text(0)
  51         , _channel_selector_widget()
  52         , _state(None)
  53         , _note(note)
  54         , _selected(false)
  55         , _valid (true)
  56 {
  57 }
  58
  59 CanvasNoteEvent::~CanvasNoteEvent()
  60 {
  61         CanvasNoteEventDeleted (this);
  62
  63         if (_text) {
  64                 _text->hide();
  65                 delete _text;
  66         }
  67
  68         delete _channel_selector_widget;
  69 }
  70
  71 void
  72 CanvasNoteEvent::invalidate ()
  73 {
  74         _valid = false;
  75 }
  76
  77 void
  78 CanvasNoteEvent::validate ()
  79 {
  80         _valid = true;
  81 }
  82
  83 void
  84 CanvasNoteEvent::show_velocity()
  85 {
  86         if (!_text) {
  87                 _text = new NoEventText (*(_item->property_parent()));
  88                 _text->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiNoteVelocityText.get();
  89                 _text->property_justification() = Gtk::JUSTIFY_CENTER;
  90         }
  91
  92         _text->property_x() = (x1() + x2()) /2;
  93         _text->property_y() = (y1() + y2()) /2;
  94         ostringstream velo(ios::ate);
  95         velo << int(_note->velocity());
  96         _text->property_text() = velo.str();
  97         _text->show();
  98         _text->raise_to_top();
  99 }
 100
 101 void
 102 CanvasNoteEvent::hide_velocity()
 103 {
 104         if (_text) {
 105                 _text->hide();
 106                 delete _text;
 107                 _text = 0;
 108         }
 109 }
 110
 111 void
 112 CanvasNoteEvent::on_channel_selection_change(uint16_t selection)
 113 {
 114         // make note change its color if its channel is not marked active
 115         if ( (selection & (1 << _note->channel())) == 0 ) {
 116                 set_fill_color(ARDOUR_UI::config()->canvasvar_MidiNoteInactiveChannel.get());
 117                 set_outline_color(calculate_outline(ARDOUR_UI::config()->canvasvar_MidiNoteInactiveChannel.get()));
 118         } else {
 119                 // set the color according to the notes selection state
 120                 set_selected(_selected);
 121         }
 122         // this forces the item to update..... maybe slow...
 123         _item->hide();
 124         _item->show();
 125 }
 126
 127 void
 128 CanvasNoteEvent::on_channel_change(uint8_t channel)
 129 {
 130         _region.note_selected(this, true);
 131         hide_channel_selector();
 132         _region.change_channel(channel);
 133 }
 134
 135 void
 136 CanvasNoteEvent::show_channel_selector(void)
 137 {
 138         if (_channel_selector_widget == 0) {
 139                 SingleMidiChannelSelector* _channel_selector = new SingleMidiChannelSelector(_note->channel());
 140                 _channel_selector->show_all();
 141                 _channel_selector->channel_selected.connect(
 142                         sigc::mem_fun(this, &CanvasNoteEvent::on_channel_change));
 143
 144                 _channel_selector->clicked.connect (
 145                         sigc::mem_fun (this, &CanvasNoteEvent::hide_channel_selector));
 146
 147                 _channel_selector_widget = new Widget(*(_item->property_parent()),
 148                                 x1(),
 149                                 y2() + 2,
 150                                 (Gtk::Widget &) *_channel_selector);
 151
 152                 _channel_selector_widget->hide();
 153                 _channel_selector_widget->property_height() = 100;
 154                 _channel_selector_widget->property_width() = 100;
 155                 _channel_selector_widget->raise_to_top();
 156                 _channel_selector_widget->show();
 157         } else {
 158                 hide_channel_selector();
 159         }
 160 }
 161
 162 void
 163 CanvasNoteEvent::hide_channel_selector(void)
 164 {
 165         if (_channel_selector_widget) {
 166                 _channel_selector_widget->hide();
 167                 delete _channel_selector_widget;
 168                 _channel_selector_widget = 0;
 169         }
 170 }
 171
 172 void
 173 CanvasNoteEvent::set_selected(bool selected)
 174 {
 175         if (!_note) {
 176                 return;
 177         }
 178
 179         _selected = selected;
 180         set_fill_color (base_color ());
 181
 182         if (_selected) {
 183                 set_outline_color(calculate_outline(ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get()));
 184         } else {
 185                 set_outline_color(calculate_outline(base_color()));
 186         }
 187
 188 }
 189
 190 #define SCALE_USHORT_TO_UINT8_T(x) ((x) / 257)
 191
 192 uint32_t
 193 CanvasNoteEvent::base_color()
 194 {
 195         using namespace ARDOUR;
 196
 197         ColorMode mode = _region.color_mode();
 198
 199         const uint8_t min_opacity = 15;
 200         uint8_t       opacity = std::max(min_opacity, uint8_t(_note->velocity() + _note->velocity()));
 201
 202         switch (mode) {
 203         case TrackColor:
 204                 {
 205                         Gdk::Color color = _region.midi_stream_view()->get_region_color();
 206                         return UINT_INTERPOLATE (RGBA_TO_UINT(
 207                                                          SCALE_USHORT_TO_UINT8_T(color.get_red()),
 208                                                          SCALE_USHORT_TO_UINT8_T(color.get_green()),
 209                                                          SCALE_USHORT_TO_UINT8_T(color.get_blue()),
 210                                                          opacity),
 211                                                  ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(), 0.5);
 212                 }
 213
 214         case ChannelColors:
 215                  return UINT_INTERPOLATE (UINT_RGBA_CHANGE_A (CanvasNoteEvent::midi_channel_colors[_note->channel()],
 216                                                               opacity),
 217                                           ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(), 0.5);
 218
 219         default:
 220                 return meter_style_fill_color(_note->velocity(), selected());
 221         };
 222
 223         return 0;
 224 }
 225
 226 bool
 227 CanvasNoteEvent::on_event(GdkEvent* ev)
 228 {
 229         if (!_region.get_time_axis_view().editor().internal_editing()) {
 230                 return false;
 231         }
 232
 233         switch (ev->type) {
 234         case GDK_ENTER_NOTIFY:
 235                 _region.note_entered(this);
 236                 break;
 237
 238         case GDK_LEAVE_NOTIFY:
 239                 _region.note_left (this);
 240                 break;
 241
 242         case GDK_BUTTON_PRESS:
 243                 if (ev->button.button == 3 && Keyboard::no_modifiers_active (ev->button.state)) {
 244                         show_channel_selector();
 245                         return true;
 246                 }
 247                 break;
 248
 249         case GDK_BUTTON_RELEASE:
 250                 if (ev->button.button == 3 && Keyboard::no_modifiers_active (ev->button.state)) {
 251                         return true;
 252                 }
 253                 break;
 254
 255         default:
 256                 break;
 257         }
 258
 259         return false;
 260 }
 261
 262 } // namespace Canvas
 263 } // namespace Gnome
 264