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         }
  89         _text->property_x() = (x1() + x2()) /2;
  90         _text->property_y() = (y1() + y2()) /2;
  91         ostringstream velo(ios::ate);
  92         velo << int(_note->velocity());
  93         _text->property_text() = velo.str();
  94         _text->property_justification() = Gtk::JUSTIFY_CENTER;
  95         _text->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiNoteVelocityText.get();
  96         _text->show();
  97         _text->raise_to_top();
  98 }
  99
 100 void
 101 CanvasNoteEvent::hide_velocity()
 102 {
 103         if (_text) {
 104                 _text->hide();
 105                 delete _text;
 106                 _text = 0;
 107         }
 108 }
 109
 110 void
 111 CanvasNoteEvent::on_channel_selection_change(uint16_t selection)
 112 {
 113         // make note change its color if its channel is not marked active
 114         if ( (selection & (1 << _note->channel())) == 0 ) {
 115                 set_fill_color(ARDOUR_UI::config()->canvasvar_MidiNoteInactiveChannel.get());
 116                 set_outline_color(calculate_outline(ARDOUR_UI::config()->canvasvar_MidiNoteInactiveChannel.get()));
 117         } else {
 118                 // set the color according to the notes selection state
 119                 selected(_selected);
 120         }
 121         // this forces the item to update..... maybe slow...
 122         _item->hide();
 123         _item->show();
 124 }
 125
 126 void
 127 CanvasNoteEvent::on_channel_change(uint8_t channel)
 128 {
 129         _region.note_selected(this, true);
 130         hide_channel_selector();
 131         _region.change_channel(channel);
 132 }
 133
 134 void
 135 CanvasNoteEvent::show_channel_selector(void)
 136 {
 137         if (_channel_selector_widget == 0) {
 138                 cerr << "Note has channel: " << int(_note->channel()) << endl;
 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_widget = new Widget(*(_item->property_parent()),
 145                                 x1(),
 146                                 y2() + 2,
 147                                 (Gtk::Widget &) *_channel_selector);
 148
 149                 _channel_selector_widget->hide();
 150                 _channel_selector_widget->property_height() = 100;
 151                 _channel_selector_widget->property_width() = 100;
 152                 _channel_selector_widget->raise_to_top();
 153                 _channel_selector_widget->show();
 154         } else {
 155                 hide_channel_selector();
 156         }
 157 }
 158
 159 void
 160 CanvasNoteEvent::hide_channel_selector(void)
 161 {
 162         if (_channel_selector_widget) {
 163                 _channel_selector_widget->hide();
 164                 delete _channel_selector_widget;
 165                 _channel_selector_widget = 0;
 166         }
 167 }
 168
 169 void
 170 CanvasNoteEvent::selected(bool selected)
 171 {
 172         if (!_note) {
 173                 return;
 174         } else if (selected) {
 175                 set_fill_color(UINT_INTERPOLATE(base_color(),
 176                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(), 0.5));
 177                 set_outline_color(calculate_outline(
 178                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get()));
 179         } else {
 180                 set_fill_color(base_color());
 181                 set_outline_color(calculate_outline(base_color()));
 182         }
 183
 184         _selected = selected;
 185 }
 186
 187 #define SCALE_USHORT_TO_UINT8_T(x) ((x) / 257)
 188
 189 uint32_t
 190 CanvasNoteEvent::base_color()
 191 {
 192         using namespace ARDOUR;
 193
 194         ColorMode mode = _region.color_mode();
 195
 196         const uint8_t min_opacity = 15;
 197         uint8_t       opacity = std::max(min_opacity, uint8_t(_note->velocity() + _note->velocity()));
 198
 199         switch (mode) {
 200         case TrackColor:
 201                 {
 202                         Gdk::Color color = _region.midi_stream_view()->get_region_color();
 203                         return RGBA_TO_UINT(
 204                                         SCALE_USHORT_TO_UINT8_T(color.get_red()),
 205                                         SCALE_USHORT_TO_UINT8_T(color.get_green()),
 206                                         SCALE_USHORT_TO_UINT8_T(color.get_blue()),
 207                                         opacity);
 208                 }
 209
 210         case ChannelColors:
 211                 return UINT_RGBA_CHANGE_A(CanvasNoteEvent::midi_channel_colors[_note->channel()],
 212                                                   opacity);
 213
 214         default:
 215                 return meter_style_fill_color(_note->velocity());
 216         };
 217
 218         return 0;
 219 }
 220
 221 bool
 222 CanvasNoteEvent::on_event(GdkEvent* ev)
 223 {
 224         cerr << "CNE: on_event type " << ev->type << endl;
 225
 226         if (!_region.get_time_axis_view().editor().internal_editing()) {
 227                 return false;
 228         }
 229
 230         switch (ev->type) {
 231         case GDK_ENTER_NOTIFY:
 232                 _region.note_entered(this);
 233                 break;
 234
 235         case GDK_LEAVE_NOTIFY:
 236                 _region.note_left (this);
 237                 break;
 238
 239         case GDK_BUTTON_PRESS:
 240                 cerr << "button press, bton = " << ev->button.button << endl;
 241                 if (ev->button.button == 3 && Keyboard::no_modifiers_active (ev->button.state)) {
 242                         show_channel_selector();
 243                         return true;
 244                 }
 245                 break;
 246
 247         case GDK_BUTTON_RELEASE:
 248                 if (ev->button.button == 3 && Keyboard::no_modifiers_active (ev->button.state)) {
 249                         return true;
 250                 }
 251                 break;
 252
 253         default:
 254                 break;
 255         }
 256
 257         return false;
 258 }
 259
 260 } // namespace Canvas
 261 } // namespace Gnome
 262