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