gtk2_ardour/port_matrix_column_labels.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 "ardour/bundle.h"
  22 #include "ardour/types.h"
  23 #include "port_matrix_column_labels.h"
  24 #include "port_matrix.h"
  25 #include "port_matrix_body.h"
  26 #include "utils.h"
  27
  28 using namespace std;
  29
  30 PortMatrixColumnLabels::PortMatrixColumnLabels (PortMatrix* m, PortMatrixBody* b)
  31         : PortMatrixLabels (m, b),
  32           _overhang (0)
  33 {
  34
  35 }
  36
  37 void
  38 PortMatrixColumnLabels::compute_dimensions ()
  39 {
  40         GdkPixmap* pm = gdk_pixmap_new (NULL, 1, 1, 24);
  41         gdk_drawable_set_colormap (pm, gdk_colormap_get_system());
  42         cairo_t* cr = gdk_cairo_create (pm);
  43
  44         /* width of the longest bundle name */
  45         _longest_bundle_name = 0;
  46         /* width of the longest channel name */
  47         _longest_channel_name = 0;
  48         /* height of highest bit of text (apart from group names) */
  49         _highest_text = 0;
  50         /* width of the whole thing */
  51         _width = 0;
  52
  53         PortGroup::BundleList const c = _matrix->columns()->bundles();
  54         for (PortGroup::BundleList::const_iterator i = c.begin (); i != c.end(); ++i) {
  55
  56                 cairo_text_extents_t ext;
  57                 cairo_text_extents (cr, i->bundle->name().c_str(), &ext);
  58                 if (ext.width > _longest_bundle_name) {
  59                         _longest_bundle_name = ext.width;
  60                 }
  61                 if (ext.height > _highest_text) {
  62                         _highest_text = ext.height;
  63                 }
  64
  65                 for (uint32_t j = 0; j < i->bundle->nchannels (); ++j) {
  66
  67                         cairo_text_extents (
  68                                 cr,
  69                                 i->bundle->channel_name (j).c_str(),
  70                                 &ext
  71                                 );
  72
  73                         if (ext.width > _longest_channel_name) {
  74                                 _longest_channel_name = ext.width;
  75                         }
  76                         if (ext.height > _highest_text) {
  77                                 _highest_text = ext.height;
  78                         }
  79                 }
  80
  81                 if (_matrix->show_only_bundles()) {
  82                         _width += grid_spacing();
  83                 } else {
  84                         _width += i->bundle->nchannels() * grid_spacing();
  85                 }
  86         }
  87
  88         _highest_group_name = 0;
  89         for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
  90                 if ((*i)->visible()) {
  91                         cairo_text_extents_t ext;
  92                         cairo_text_extents (cr, (*i)->name.c_str(), &ext);
  93                         if (ext.height > _highest_group_name) {
  94                                 _highest_group_name = ext.height;
  95                         }
  96                 } else {
  97                         _width += grid_spacing ();
  98                 }
  99         }
 100
 101         cairo_destroy (cr);
 102         gdk_pixmap_unref (pm);
 103
 104         /* height of the whole thing */
 105
 106         int a = _longest_bundle_name + 4 * name_pad();
 107         if (!_matrix->show_only_bundles()) {
 108                 a += _longest_channel_name;
 109         }
 110
 111         double const parallelogram_height =  a * sin (angle()) + _highest_text * cos (angle());
 112
 113         _height = parallelogram_height + _highest_group_name + 2 * name_pad();
 114
 115         _overhang = parallelogram_height / tan (angle ());
 116         _width += _overhang;
 117 }
 118
 119 double
 120 PortMatrixColumnLabels::basic_text_x_pos (int c) const
 121 {
 122         return grid_spacing() / 2 +
 123                 _highest_text / (2 * sin (angle ()));
 124 }
 125
 126 void
 127 PortMatrixColumnLabels::render (cairo_t* cr)
 128 {
 129         /* BACKGROUND */
 130
 131         set_source_rgb (cr, background_colour());
 132         cairo_rectangle (cr, 0, 0, _width, _height);
 133         cairo_fill (cr);
 134
 135         /* PORT GROUP NAME */
 136
 137         double x = 0;
 138         double y = 0;
 139
 140         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 141                 x = slanted_height() / tan (angle());
 142                 y = _highest_group_name + name_pad();
 143         } else {
 144                 x = 0;
 145                 y = _height - name_pad();
 146         }
 147
 148         int g = 0;
 149         for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
 150
 151                 /* compute width of this group */
 152                 uint32_t w = 0;
 153                 if (!(*i)->visible()) {
 154                         w = grid_spacing ();
 155                 } else {
 156                         if (_matrix->show_only_bundles()) {
 157                                 w = (*i)->bundles().size() * grid_spacing();
 158                         } else {
 159                                 w = (*i)->total_channels() * grid_spacing();
 160                         }
 161                 }
 162
 163                 if (w == 0) {
 164                         continue;
 165                 }
 166
 167                 /* rectangle */
 168                 set_source_rgb (cr, get_a_group_colour (g));
 169                 double const rh = _highest_group_name + 2 * name_pad();
 170                 if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 171                         cairo_rectangle (cr, x, 0, w, rh);
 172                 } else {
 173                         cairo_rectangle (cr, x, _height - rh, w, rh);
 174                 }
 175                 cairo_fill (cr);
 176
 177                 string const upper = Glib::ustring ((*i)->name).uppercase ();
 178                 pair<string, double> const display = fit_to_pixels (cr, upper, w);
 179
 180                 /* plot it */
 181                 set_source_rgb (cr, text_colour());
 182                 cairo_move_to (cr, x + (w - display.second) / 2, y);
 183                 cairo_show_text (cr, display.first.c_str());
 184
 185                 x += w;
 186                 ++g;
 187
 188         }
 189
 190         /* BUNDLE PARALLELOGRAM-TYPE-THING AND NAME */
 191
 192         x = 0;
 193         int N = 0;
 194
 195         for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
 196
 197                 if ((*i)->visible ()) {
 198
 199                         PortGroup::BundleList const & bundles = (*i)->bundles ();
 200                         for (PortGroup::BundleList::const_iterator j = bundles.begin (); j != bundles.end(); ++j) {
 201
 202                                 Gdk::Color c = j->has_colour ? j->colour : get_a_bundle_colour (N);
 203                                 render_bundle_name (cr, c, x, 0, j->bundle);
 204
 205                                 if (_matrix->show_only_bundles()) {
 206                                         x += grid_spacing();
 207                                 } else {
 208                                         x += j->bundle->nchannels () * grid_spacing();
 209                                 }
 210
 211                                 ++N;
 212                         }
 213
 214                 } else {
 215
 216                         x += grid_spacing ();
 217
 218                 }
 219         }
 220
 221
 222         /* PORT NAMES */
 223
 224         if (!_matrix->show_only_bundles()) {
 225                 x = 0;
 226                 N = 0;
 227                 for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
 228
 229                         if ((*i)->visible ()) {
 230
 231                                 PortGroup::BundleList const & bundles = (*i)->bundles ();
 232                                 for (PortGroup::BundleList::const_iterator j = bundles.begin (); j != bundles.end(); ++j) {
 233
 234                                         for (uint32_t k = 0; k < j->bundle->nchannels(); ++k) {
 235                                                 Gdk::Color c = j->has_colour ? j->colour : get_a_bundle_colour (N);
 236                                                 render_channel_name (cr, c, x, 0, ARDOUR::BundleChannel (j->bundle, k));
 237                                                 x += grid_spacing();
 238                                         }
 239
 240                                         ++N;
 241                                 }
 242
 243                         } else {
 244
 245                                 x += grid_spacing ();
 246
 247                         }
 248                 }
 249         }
 250 }
 251
 252 double
 253 PortMatrixColumnLabels::component_to_parent_x (double x) const
 254 {
 255         return x - _body->xoffset() + _parent_rectangle.get_x();
 256 }
 257
 258 double
 259 PortMatrixColumnLabels::parent_to_component_x (double x) const
 260 {
 261         return x + _body->xoffset() - _parent_rectangle.get_x();
 262 }
 263
 264 double
 265 PortMatrixColumnLabels::component_to_parent_y (double y) const
 266 {
 267         return y + _parent_rectangle.get_y();
 268 }
 269
 270 double
 271 PortMatrixColumnLabels::parent_to_component_y (double y) const
 272 {
 273         return y - _parent_rectangle.get_y();
 274 }
 275
 276 void
 277 PortMatrixColumnLabels::mouseover_changed (PortMatrixNode const &)
 278 {
 279         clear_channel_highlights ();
 280         if (_body->mouseover().column.bundle) {
 281                 add_channel_highlight (_body->mouseover().column);
 282         }
 283 }
 284
 285 vector<pair<double, double> >
 286 PortMatrixColumnLabels::port_name_shape (double xoff, double yoff) const
 287 {
 288         vector<pair<double, double> > shape;
 289
 290         double const lc = _longest_channel_name + name_pad();
 291         double const w = grid_spacing();
 292
 293         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 294
 295                 double x_ = xoff + slanted_height() / tan (angle()) + w;
 296                 double y_ = yoff;
 297                 shape.push_back (make_pair (x_, y_));
 298                 x_ -= w;
 299                 shape.push_back (make_pair (x_, y_));
 300                 x_ -= lc * cos (angle());
 301                 y_ += lc * sin (angle());
 302                 shape.push_back (make_pair (x_, y_));
 303                 x_ += w * pow (sin (angle()), 2);
 304                 y_ += w * sin (angle()) * cos (angle());
 305                 shape.push_back (make_pair (x_, y_));
 306
 307         } else {
 308
 309                 double x_ = xoff;
 310                 double y_ = yoff + _height;
 311                 shape.push_back (make_pair (x_, y_));
 312                 x_ += w;
 313                 shape.push_back (make_pair (x_, y_));
 314                 x_ += lc * cos (angle());
 315                 y_ -= lc * sin (angle());
 316                 shape.push_back (make_pair (x_, y_));
 317                 x_ -= grid_spacing() * pow (sin (angle()), 2);
 318                 y_ -= grid_spacing() * sin (angle()) * cos (angle());
 319                 shape.push_back (make_pair (x_, y_));
 320         }
 321
 322         return shape;
 323 }
 324
 325 void
 326 PortMatrixColumnLabels::render_bundle_name (
 327         cairo_t* cr, Gdk::Color colour, double xoff, double yoff, boost::shared_ptr<ARDOUR::Bundle> b
 328         )
 329 {
 330         set_source_rgb (cr, colour);
 331
 332         double w = 0;
 333         if (_matrix->show_only_bundles()) {
 334                 w = grid_spacing ();
 335         } else {
 336                 w = b->nchannels() * grid_spacing();
 337         }
 338
 339         double x_ = xoff;
 340
 341         uint32_t y = yoff;
 342         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 343                 y += _height;
 344         } else {
 345                 y += slanted_height();
 346         }
 347
 348         double y_ = y;
 349         cairo_move_to (cr, x_, y_);
 350         x_ += w;
 351         cairo_line_to (cr, x_, y_);
 352         x_ += slanted_height() / tan (angle ());
 353         y_ -= slanted_height();
 354         cairo_line_to (cr, x_, y_);
 355         x_ -= w;
 356         cairo_line_to (cr, x_, y_);
 357         cairo_line_to (cr, xoff, y);
 358         cairo_fill_preserve (cr);
 359         set_source_rgb (cr, background_colour());
 360         cairo_set_line_width (cr, label_border_width());
 361         cairo_stroke (cr);
 362
 363         set_source_rgb (cr, text_colour());
 364
 365         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 366
 367                 double rl = 0;
 368                 if (_matrix->show_only_bundles()) {
 369                         rl = name_pad();
 370                 } else {
 371                         rl = 3 * name_pad() + _longest_channel_name;
 372                 }
 373                 cairo_move_to (
 374                         cr,
 375                         xoff + basic_text_x_pos (0) + rl * cos (angle()),
 376                         yoff + _height - rl * sin (angle())
 377                         );
 378
 379         } else {
 380
 381                 cairo_move_to (
 382                         cr,
 383                         xoff + basic_text_x_pos (0),
 384                         yoff + slanted_height() - name_pad() * sin (angle())
 385                         );
 386         }
 387
 388         cairo_save (cr);
 389         cairo_rotate (cr, -angle());
 390         cairo_show_text (cr, b->name().c_str());
 391         cairo_restore (cr);
 392 }
 393
 394 void
 395 PortMatrixColumnLabels::render_channel_name (
 396         cairo_t* cr, Gdk::Color colour, double xoff, double yoff, ARDOUR::BundleChannel const &bc
 397         )
 398 {
 399         vector<pair<double, double> > const shape = port_name_shape (xoff, yoff);
 400
 401         cairo_move_to (cr, shape[0].first, shape[0].second);
 402         for (uint32_t i = 1; i < 4; ++i) {
 403                 cairo_line_to (cr, shape[i].first, shape[i].second);
 404         }
 405         cairo_line_to (cr, shape[0].first, shape[0].second);
 406
 407         set_source_rgb (cr, colour);
 408         cairo_fill_preserve (cr);
 409         set_source_rgb (cr, background_colour());
 410         cairo_set_line_width (cr, label_border_width());
 411         cairo_stroke (cr);
 412
 413         set_source_rgb (cr, text_colour());
 414
 415         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 416
 417                 cairo_move_to (
 418                         cr,
 419                         xoff + basic_text_x_pos(bc.channel),
 420                         yoff + _height - name_pad() * sin (angle())
 421                         );
 422
 423         } else {
 424
 425                 double const rl = 3 * name_pad() + _longest_bundle_name;
 426                 cairo_move_to (
 427                         cr,
 428                         xoff + basic_text_x_pos(bc.channel) + rl * cos (angle ()),
 429                         yoff + slanted_height() - rl * sin (angle())
 430                         );
 431         }
 432
 433         cairo_save (cr);
 434         cairo_rotate (cr, -angle());
 435
 436         cairo_show_text (
 437                 cr,
 438                 bc.bundle->channel_name(bc.channel).c_str()
 439                 );
 440
 441         cairo_restore (cr);
 442 }
 443
 444 double
 445 PortMatrixColumnLabels::channel_x (ARDOUR::BundleChannel const &bc) const
 446 {
 447         return channel_to_position (bc, _matrix->columns()) * grid_spacing ();
 448 }
 449
 450 double
 451 PortMatrixColumnLabels::channel_y (ARDOUR::BundleChannel const &bc) const
 452 {
 453         return 0;
 454 }
 455
 456 void
 457 PortMatrixColumnLabels::queue_draw_for (ARDOUR::BundleChannel const & bc)
 458 {
 459         if (!bc.bundle) {
 460                 return;
 461         }
 462
 463         if (_matrix->show_only_bundles()) {
 464
 465                 _body->queue_draw_area (
 466                         component_to_parent_x (channel_x (bc)),
 467                         component_to_parent_y (0),
 468                         grid_spacing() + _height * tan (angle()),
 469                         _height
 470                         );
 471
 472         } else {
 473
 474                 double const x = channel_x (bc);
 475                 double const lc = _longest_channel_name + name_pad();
 476                 double const h = lc * sin (angle ()) + grid_spacing() * sin (angle()) * cos (angle());
 477
 478                 if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 479
 480                         _body->queue_draw_area (
 481                                 component_to_parent_x (x),
 482                                 component_to_parent_y (_height - h),
 483                                 grid_spacing() + lc * cos (angle()),
 484                                 h
 485                                 );
 486
 487                 } else if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 488
 489                         double const x_ = x + slanted_height() / tan (angle()) - lc * cos (angle());
 490
 491                         _body->queue_draw_area (
 492                                 component_to_parent_x (x_),
 493                                 component_to_parent_y (0),
 494                                 grid_spacing() + lc * cos (angle()),
 495                                 h
 496                                 );
 497
 498                 }
 499
 500         }
 501 }
 502
 503 void
 504 PortMatrixColumnLabels::button_press (double x, double y, int b, uint32_t t)
 505 {
 506         uint32_t cx = 0;
 507         uint32_t const gh = _highest_group_name + 2 * name_pad();
 508
 509         bool group_name = false;
 510         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 511                 if (y > (_height - gh)) {
 512                         group_name = true;
 513                         cx = x;
 514                 } else {
 515                         cx = x - (_height - gh - y) * tan (angle ());
 516                 }
 517         } else {
 518                 if (y < gh) {
 519                         group_name = true;
 520                         cx = x - _overhang;
 521                 } else {
 522                         cx = x - (_height - y) * tan (angle ());
 523                 }
 524         }
 525
 526         pair<boost::shared_ptr<PortGroup>, ARDOUR::BundleChannel> gc = position_to_group_and_channel (cx / grid_spacing(), _matrix->columns());
 527
 528         if (b == 1) {
 529
 530                 if (group_name && gc.first) {
 531                         gc.first->set_visible (!gc.first->visible ());
 532                 } else if (gc.second.bundle) {
 533                         _body->highlight_associated_channels (_matrix->column_index(), gc.second);
 534                 }
 535
 536         } else if (b == 3) {
 537
 538                         _matrix->popup_menu (
 539                                 gc,
 540                                 make_pair (boost::shared_ptr<PortGroup> (), ARDOUR::BundleChannel ()),
 541                                 t
 542                                 );
 543         }
 544 }
 545