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