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