gtk2_ardour/port_matrix_grid.cc

   1 /*
   2     Copyright (C) 2002-2009 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <iostream>
  21 #include <cairo/cairo.h>
  22 #include "ardour/bundle.h"
  23 #include "ardour/types.h"
  24 #include "port_matrix_grid.h"
  25 #include "port_matrix.h"
  26
  27 PortMatrixGrid::PortMatrixGrid (PortMatrix* m, PortMatrixBody* b)
  28         : PortMatrixComponent (m, b)
  29 {
  30
  31 }
  32
  33 void
  34 PortMatrixGrid::compute_dimensions ()
  35 {
  36         _width = 0;
  37         ARDOUR::BundleList const c = _matrix->columns()->bundles();
  38         for (ARDOUR::BundleList::const_iterator i = c.begin(); i != c.end(); ++i) {
  39                 _width += (*i)->nchannels() * column_width();
  40         }
  41
  42         _height = 0;
  43         ARDOUR::BundleList const r = _matrix->rows()->bundles();
  44         for (ARDOUR::BundleList::const_iterator i = r.begin(); i != r.end(); ++i) {
  45                 _height += (*i)->nchannels() * row_height();
  46         }
  47 }
  48
  49
  50 void
  51 PortMatrixGrid::render (cairo_t* cr)
  52 {
  53         /* BACKGROUND */
  54
  55         set_source_rgb (cr, background_colour());
  56         cairo_rectangle (cr, 0, 0, _width, _height);
  57         cairo_fill (cr);
  58
  59         /* VERTICAL GRID LINES */
  60
  61         set_source_rgb (cr, grid_colour());
  62         uint32_t x = 0;
  63         ARDOUR::BundleList const c = _matrix->columns()->bundles();
  64         for (ARDOUR::BundleList::size_type i = 0; i < c.size(); ++i) {
  65
  66                 cairo_set_line_width (cr, thin_grid_line_width());
  67                 for (uint32_t j = 1; j < c[i]->nchannels(); ++j) {
  68                         x += column_width();
  69                         cairo_move_to (cr, x, 0);
  70                         cairo_line_to (cr, x, _height);
  71                         cairo_stroke (cr);
  72                 }
  73
  74                 if (i < (c.size() - 1)) {
  75                         x += column_width();
  76                         cairo_set_line_width (cr, thick_grid_line_width());
  77                         cairo_move_to (cr, x, 0);
  78                         cairo_line_to (cr, x, _height);
  79                         cairo_stroke (cr);
  80                 }
  81         }
  82
  83         uint32_t grid_width = x + column_width();
  84
  85         /* HORIZONTAL GRID LINES */
  86
  87         uint32_t y = 0;
  88         ARDOUR::BundleList const r = _matrix->rows()->bundles();
  89         for (ARDOUR::BundleList::size_type i = 0; i < r.size(); ++i) {
  90
  91                 cairo_set_line_width (cr, thin_grid_line_width());
  92                 for (uint32_t j = 1; j < r[i]->nchannels(); ++j) {
  93                         y += row_height();
  94                         cairo_move_to (cr, 0, y);
  95                         cairo_line_to (cr, grid_width, y);
  96                         cairo_stroke (cr);
  97                 }
  98
  99                 if (i < (r.size() - 1)) {
 100                         y += row_height();
 101                         cairo_set_line_width (cr, thick_grid_line_width());
 102                         cairo_move_to (cr, 0, y);
 103                         cairo_line_to (cr, grid_width, y);
 104                         cairo_stroke (cr);
 105                 }
 106         }
 107
 108         /* ASSOCIATION INDICATORS */
 109
 110         uint32_t bx = 0;
 111         uint32_t by = 0;
 112
 113         for (ARDOUR::BundleList::const_iterator i = c.begin(); i < c.end(); ++i) {
 114                 by = 0;
 115
 116                 for (ARDOUR::BundleList::const_iterator j = r.begin(); j < r.end(); ++j) {
 117
 118                         x = bx;
 119                         for (uint32_t k = 0; k < (*i)->nchannels (); k++) {
 120
 121                                 y = by;
 122                                 for (uint32_t l = 0; l < (*j)->nchannels (); ++l) {
 123
 124                                         ARDOUR::BundleChannel c[2];
 125                                         c[_matrix->column_index()] = ARDOUR::BundleChannel (*i, k);
 126                                         c[_matrix->row_index()] = ARDOUR::BundleChannel (*j, l);
 127
 128                                         PortMatrix::State const s = _matrix->get_state (c);
 129
 130                                         switch (s) {
 131                                         case PortMatrix::ASSOCIATED:
 132                                                 set_source_rgba (cr, association_colour(), 0.5);
 133                                                 cairo_arc (
 134                                                         cr,
 135                                                         x + column_width() / 2,
 136                                                         y + column_width() / 2,
 137                                                         (column_width() - (2 * connection_indicator_pad())) / 2,
 138                                                         0,
 139                                                         2 * M_PI
 140                                                         );
 141
 142                                                 cairo_fill (cr);
 143                                                 break;
 144
 145                                         case PortMatrix::UNKNOWN:
 146                                                 set_source_rgba (cr, unknown_colour(), 0.5);
 147                                                 cairo_rectangle (
 148                                                         cr,
 149                                                         x + thick_grid_line_width(),
 150                                                         y + thick_grid_line_width(),
 151                                                         column_width() - 2 * thick_grid_line_width(),
 152                                                         row_height() - 2 * thick_grid_line_width()
 153                                                         );
 154                                                 cairo_fill (cr);
 155                                                 break;
 156
 157                                         case PortMatrix::NOT_ASSOCIATED:
 158                                                 break;
 159                                         }
 160
 161                                         y += row_height();
 162                                 }
 163                                 x += column_width();
 164                         }
 165
 166                         by += (*j)->nchannels () * row_height();
 167                 }
 168
 169                 bx += (*i)->nchannels () * column_width();
 170         }
 171 }
 172
 173
 174 PortMatrixNode
 175 PortMatrixGrid::position_to_node (double x, double y) const
 176 {
 177         return PortMatrixNode (
 178                 position_to_channel (y, _matrix->rows()->bundles(), row_height()),
 179                 position_to_channel (x, _matrix->columns()->bundles(), column_width())
 180                 );
 181 }
 182
 183
 184 ARDOUR::BundleChannel
 185 PortMatrixGrid::position_to_channel (double p, ARDOUR::BundleList const& bundles, double inc) const
 186 {
 187         uint32_t pos = p / inc;
 188
 189         for (ARDOUR::BundleList::const_iterator i = bundles.begin(); i != bundles.end(); ++i) {
 190                 if (pos < (*i)->nchannels()) {
 191                         return ARDOUR::BundleChannel (*i, pos);
 192                 } else {
 193                         pos -= (*i)->nchannels();
 194                 }
 195         }
 196
 197         return ARDOUR::BundleChannel (boost::shared_ptr<ARDOUR::Bundle> (), 0);
 198 }
 199
 200
 201 double
 202 PortMatrixGrid::channel_position (
 203         ARDOUR::BundleChannel bc,
 204         ARDOUR::BundleList const& bundles,
 205         double inc) const
 206 {
 207         double p = 0;
 208
 209         ARDOUR::BundleList::const_iterator i = bundles.begin ();
 210         while (i != bundles.end() && *i != bc.bundle) {
 211                 p += inc * (*i)->nchannels();
 212                 ++i;
 213         }
 214
 215         if (i == bundles.end()) {
 216                 return 0;
 217         }
 218
 219         p += inc * bc.channel;
 220
 221         return p;
 222 }
 223
 224 void
 225 PortMatrixGrid::button_press (double x, double y, int b)
 226 {
 227         PortMatrixNode const node = position_to_node (x, y);
 228
 229         if (node.row.bundle && node.column.bundle) {
 230
 231                 ARDOUR::BundleChannel c[2];
 232                 c[_matrix->row_index()] = node.row;
 233                 c[_matrix->column_index()] = node.column;
 234
 235                 PortMatrix::State const s = _matrix->get_state (c);
 236
 237                 if (s == PortMatrix::ASSOCIATED || s == PortMatrix::NOT_ASSOCIATED) {
 238
 239                         bool const n = !(s == PortMatrix::ASSOCIATED);
 240
 241                         ARDOUR::BundleChannel c[2];
 242                         c[_matrix->row_index()] = node.row;
 243                         c[_matrix->column_index()] = node.column;
 244
 245                         _matrix->set_state (c, n);
 246                 }
 247
 248                 require_render ();
 249                 _body->queue_draw ();
 250         }
 251 }
 252
 253 void
 254 PortMatrixGrid::draw_extra (cairo_t* cr)
 255 {
 256         set_source_rgba (cr, mouseover_line_colour(), 0.3);
 257         cairo_set_line_width (cr, mouseover_line_width());
 258
 259         double const x = component_to_parent_x (
 260                 channel_position (_body->mouseover().column, _matrix->columns()->bundles(), column_width()) + column_width() / 2
 261                 );
 262
 263         double const y = component_to_parent_y (
 264                 channel_position (_body->mouseover().row, _matrix->rows()->bundles(), row_height()) + row_height() / 2
 265                 );
 266
 267         if (_body->mouseover().row.bundle) {
 268
 269                 cairo_move_to (cr, x, y);
 270                 if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 271                         cairo_line_to (cr, component_to_parent_x (0), y);
 272                 } else if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 273                         cairo_line_to (cr, _parent_rectangle.get_x() + _parent_rectangle.get_width(), y);
 274                 }
 275                 cairo_stroke (cr);
 276         }
 277
 278         if (_body->mouseover().column.bundle) {
 279
 280                 cairo_move_to (cr, x, y);
 281                 if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 282                         cairo_line_to (cr, x, _parent_rectangle.get_y() + _parent_rectangle.get_height());
 283                 } else if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 284                         cairo_line_to (cr, x, component_to_parent_y (0));
 285                 }
 286                 cairo_stroke (cr);
 287         }
 288 }
 289
 290 void
 291 PortMatrixGrid::mouseover_changed (PortMatrixNode const& old)
 292 {
 293         queue_draw_for (old);
 294         queue_draw_for (_body->mouseover());
 295 }
 296
 297 void
 298 PortMatrixGrid::mouseover_event (double x, double y)
 299 {
 300         _body->set_mouseover (position_to_node (x, y));
 301 }
 302
 303 void
 304 PortMatrixGrid::queue_draw_for (PortMatrixNode const &n)
 305 {
 306         if (n.row.bundle) {
 307
 308                 double const y = channel_position (n.row, _matrix->rows()->bundles(), row_height());
 309                 _body->queue_draw_area (
 310                         _parent_rectangle.get_x(),
 311                         component_to_parent_y (y),
 312                         _parent_rectangle.get_width(),
 313                         row_height()
 314                         );
 315         }
 316
 317         if (n.column.bundle) {
 318
 319                 double const x = channel_position (n.column, _matrix->columns()->bundles(), column_width());
 320
 321                 _body->queue_draw_area (
 322                         component_to_parent_x (x),
 323                         _parent_rectangle.get_y(),
 324                         column_width(),
 325                         _parent_rectangle.get_height()
 326                         );
 327         }
 328 }
 329
 330 double
 331 PortMatrixGrid::component_to_parent_x (double x) const
 332 {
 333         return x - _body->xoffset() + _parent_rectangle.get_x();
 334 }
 335
 336 double
 337 PortMatrixGrid::parent_to_component_x (double x) const
 338 {
 339         return x + _body->xoffset() - _parent_rectangle.get_x();
 340 }
 341
 342 double
 343 PortMatrixGrid::component_to_parent_y (double y) const
 344 {
 345         return y - _body->yoffset() + _parent_rectangle.get_y();
 346 }
 347
 348 double
 349 PortMatrixGrid::parent_to_component_y (double y) const
 350 {
 351         return y + _body->yoffset() - _parent_rectangle.get_y();
 352 }
 353