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                 _width += (*i)->nchannels() * column_width();
  78         }
  79
  80         _highest_group_name = 0;
  81         for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
  82                 if ((*i)->visible()) {
  83                         cairo_text_extents_t ext;
  84                         cairo_text_extents (cr, (*i)->name.c_str(), &ext);
  85                         if (ext.height > _highest_group_name) {
  86                                 _highest_group_name = ext.height;
  87                         }
  88                 }
  89         }
  90
  91         cairo_destroy (cr);
  92         gdk_pixmap_unref (pm);
  93
  94         /* height of the whole thing */
  95
  96         double const parallelogram_height =
  97                 (_longest_bundle_name + _longest_channel_name + 4 * name_pad()) * sin (angle())
  98                 + _highest_text * cos (angle());
  99
 100         _height = parallelogram_height + _highest_group_name + 2 * name_pad();
 101
 102         _width += parallelogram_height / tan (angle ());
 103 }
 104
 105 double
 106 PortMatrixColumnLabels::basic_text_x_pos (int c) const
 107 {
 108         return column_width() / 2 +
 109                 _highest_text / (2 * sin (angle ()));
 110 }
 111
 112 void
 113 PortMatrixColumnLabels::render (cairo_t* cr)
 114 {
 115         /* BACKGROUND */
 116
 117         set_source_rgb (cr, background_colour());
 118         cairo_rectangle (cr, 0, 0, _width, _height);
 119         cairo_fill (cr);
 120
 121         /* PORT GROUP NAME */
 122
 123         double x = 0;
 124         double y = 0;
 125
 126         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 127                 x = slanted_height() / tan (angle());
 128                 y = _highest_group_name + name_pad();
 129         } else {
 130                 x = 0;
 131                 y = _height - name_pad();
 132         }
 133
 134         int g = 0;
 135         for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
 136
 137                 if (!(*i)->visible() || ((*i)->bundles().empty() && (*i)->ports.empty()) ) {
 138                         continue;
 139                 }
 140
 141                 /* compute width of this group */
 142                 uint32_t w = 0;
 143                 for (ARDOUR::BundleList::const_iterator j = (*i)->bundles().begin(); j != (*i)->bundles().end(); ++j) {
 144                         w += (*j)->nchannels() * column_width();
 145                 }
 146                 w += (*i)->ports.size() * column_width();
 147
 148                 /* rectangle */
 149                 set_source_rgb (cr, get_a_group_colour (g));
 150                 double const rh = _highest_group_name + 2 * name_pad();
 151                 if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 152                         cairo_rectangle (cr, x, 0, w, rh);
 153                 } else {
 154                         cairo_rectangle (cr, x, _height - rh, w, rh);
 155                 }
 156                 cairo_fill (cr);
 157
 158                 std::pair<std::string, double> const display = display_port_name (cr, (*i)->name, w);
 159
 160                 /* plot it */
 161                 set_source_rgb (cr, text_colour());
 162                 cairo_move_to (cr, x + (w - display.second) / 2, y);
 163                 cairo_show_text (cr, display.first.c_str());
 164
 165                 x += w;
 166                 ++g;
 167         }
 168
 169         /* BUNDLE PARALLELOGRAM-TYPE-THING AND NAME */
 170
 171         x = 0;
 172         ARDOUR::BundleList const c = _matrix->columns()->bundles();
 173         for (ARDOUR::BundleList::const_iterator i = c.begin (); i != c.end(); ++i) {
 174
 175                 Gdk::Color colour = get_a_bundle_colour (i - c.begin ());
 176                 set_source_rgb (cr, colour);
 177
 178                 double const w = (*i)->nchannels() * column_width();
 179
 180                 double x_ = x;
 181
 182                 if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 183                         y = _height;
 184                 } else {
 185                         y = slanted_height();
 186                 }
 187
 188                 double y_ = y;
 189                 cairo_move_to (cr, x_, y_);
 190                 x_ += w;
 191                 cairo_line_to (cr, x_, y_);
 192                 x_ += slanted_height() / tan (angle ());
 193                 y_ -= slanted_height();
 194                 cairo_line_to (cr, x_, y_);
 195                 x_ -= w;
 196                 cairo_line_to (cr, x_, y_);
 197                 cairo_line_to (cr, x, y);
 198                 cairo_fill_preserve (cr);
 199                 set_source_rgb (cr, background_colour());
 200                 cairo_set_line_width (cr, label_border_width());
 201                 cairo_stroke (cr);
 202
 203                 set_source_rgb (cr, text_colour());
 204
 205                 if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 206
 207                         double const rl = 3 * name_pad() + _longest_channel_name;
 208                         cairo_move_to (
 209                                 cr,
 210                                 x + basic_text_x_pos (0) + rl * cos (angle()),
 211                                 _height - rl * sin (angle())
 212                                 );
 213
 214                 } else {
 215
 216                         cairo_move_to (
 217                                 cr,
 218                                 x + basic_text_x_pos (0),
 219                                 slanted_height() - name_pad() * sin (angle())
 220                                 );
 221                 }
 222
 223                 cairo_save (cr);
 224                 cairo_rotate (cr, -angle());
 225                 cairo_show_text (cr, (*i)->name().c_str());
 226                 cairo_restore (cr);
 227
 228                 x += (*i)->nchannels () * column_width();
 229         }
 230
 231
 232         /* PORT NAMES */
 233
 234         x = 0;
 235         for (ARDOUR::BundleList::const_iterator i = c.begin (); i != c.end(); ++i) {
 236
 237                 for (uint32_t j = 0; j < (*i)->nchannels(); ++j) {
 238
 239                         render_channel_name (cr, get_a_bundle_colour (i - c.begin()), x, 0, ARDOUR::BundleChannel (*i, j));
 240                         x += column_width();
 241                 }
 242         }
 243 }
 244
 245 double
 246 PortMatrixColumnLabels::component_to_parent_x (double x) const
 247 {
 248         return x - _body->xoffset() + _parent_rectangle.get_x();
 249 }
 250
 251 double
 252 PortMatrixColumnLabels::parent_to_component_x (double x) const
 253 {
 254         return x + _body->xoffset() - _parent_rectangle.get_x();
 255 }
 256
 257 double
 258 PortMatrixColumnLabels::component_to_parent_y (double y) const
 259 {
 260         return y + _parent_rectangle.get_y();
 261 }
 262
 263 double
 264 PortMatrixColumnLabels::parent_to_component_y (double y) const
 265 {
 266         return y - _parent_rectangle.get_y();
 267 }
 268
 269 void
 270 PortMatrixColumnLabels::mouseover_changed (PortMatrixNode const &)
 271 {
 272         clear_channel_highlights ();
 273         if (_body->mouseover().column.bundle) {
 274                 add_channel_highlight (_body->mouseover().column);
 275         }
 276 }
 277
 278 std::vector<std::pair<double, double> >
 279 PortMatrixColumnLabels::port_name_shape (double xoff, double yoff) const
 280 {
 281         std::vector<std::pair<double, double> > shape;
 282
 283         double const lc = _longest_channel_name + name_pad();
 284         double const w = column_width();
 285
 286         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 287
 288                 double x_ = xoff + slanted_height() / tan (angle()) + w;
 289                 double y_ = yoff;
 290                 shape.push_back (std::make_pair (x_, y_));
 291                 x_ -= w;
 292                 shape.push_back (std::make_pair (x_, y_));
 293                 x_ -= lc * cos (angle());
 294                 y_ += lc * sin (angle());
 295                 shape.push_back (std::make_pair (x_, y_));
 296                 x_ += w * pow (sin (angle()), 2);
 297                 y_ += w * sin (angle()) * cos (angle());
 298                 shape.push_back (std::make_pair (x_, y_));
 299
 300         } else {
 301
 302                 double x_ = xoff;
 303                 double y_ = yoff + _height;
 304                 shape.push_back (std::make_pair (x_, y_));
 305                 x_ += w;
 306                 shape.push_back (std::make_pair (x_, y_));
 307                 x_ += lc * cos (angle());
 308                 y_ -= lc * sin (angle());
 309                 shape.push_back (std::make_pair (x_, y_));
 310                 x_ -= column_width() * pow (sin (angle()), 2);
 311                 y_ -= column_width() * sin (angle()) * cos (angle());
 312                 shape.push_back (std::make_pair (x_, y_));
 313         }
 314
 315         return shape;
 316 }
 317
 318 void
 319 PortMatrixColumnLabels::render_channel_name (cairo_t* cr, Gdk::Color colour, double xoff, double yoff, ARDOUR::BundleChannel const &bc)
 320 {
 321         std::vector<std::pair<double, double> > const shape = port_name_shape (xoff, yoff);
 322
 323         cairo_move_to (cr, shape[0].first, shape[0].second);
 324         for (uint32_t i = 1; i < 4; ++i) {
 325                 cairo_line_to (cr, shape[i].first, shape[i].second);
 326         }
 327         cairo_line_to (cr, shape[0].first, shape[0].second);
 328
 329         set_source_rgb (cr, colour);
 330         cairo_fill_preserve (cr);
 331         set_source_rgb (cr, background_colour());
 332         cairo_set_line_width (cr, label_border_width());
 333         cairo_stroke (cr);
 334
 335         set_source_rgb (cr, text_colour());
 336
 337         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 338
 339                 cairo_move_to (
 340                         cr,
 341                         xoff + basic_text_x_pos(bc.channel),
 342                         yoff + _height - name_pad() * sin (angle())
 343                         );
 344
 345         } else {
 346
 347                 double const rl = 3 * name_pad() + _longest_bundle_name;
 348                 cairo_move_to (
 349                         cr,
 350                         xoff + basic_text_x_pos(bc.channel) + rl * cos (angle ()),
 351                         yoff + slanted_height() - rl * sin (angle())
 352                         );
 353         }
 354
 355         cairo_save (cr);
 356         cairo_rotate (cr, -angle());
 357
 358         cairo_show_text (
 359                 cr,
 360                 bc.bundle->channel_name(bc.channel).c_str()
 361                 );
 362
 363         cairo_restore (cr);
 364 }
 365
 366 double
 367 PortMatrixColumnLabels::channel_x (ARDOUR::BundleChannel const &bc) const
 368 {
 369         uint32_t n = 0;
 370
 371         ARDOUR::BundleList::const_iterator i = _matrix->columns()->bundles().begin();
 372         while (i != _matrix->columns()->bundles().end() && *i != bc.bundle) {
 373                 n += (*i)->nchannels ();
 374                 ++i;
 375         }
 376
 377         n += bc.channel;
 378         return n * column_width();
 379 }
 380
 381 double
 382 PortMatrixColumnLabels::channel_y (ARDOUR::BundleChannel const &bc) const
 383 {
 384         return 0;
 385 }
 386
 387 void
 388 PortMatrixColumnLabels::queue_draw_for (ARDOUR::BundleChannel const & bc)
 389 {
 390         if (bc.bundle) {
 391
 392                 double const x = channel_x (bc);
 393                 double const lc = _longest_channel_name + name_pad();
 394                 double const h = lc * sin (angle ()) + column_width() * sin (angle()) * cos (angle());
 395                 if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 396
 397                         _body->queue_draw_area (
 398                                 component_to_parent_x (x),
 399                                 component_to_parent_y (_height - h),
 400                                 column_width() + lc * cos (angle()),
 401                                 h
 402                                 );
 403
 404                 } else if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 405
 406                         double const x_ = x + slanted_height() / tan (angle()) - lc * cos (angle());
 407
 408                         _body->queue_draw_area (
 409                                 component_to_parent_x (x_),
 410                                 component_to_parent_y (0),
 411                                 column_width() + lc * cos (angle()),
 412                                 h
 413                                 );
 414
 415                 }
 416
 417
 418         }
 419 }
 420
 421 void
 422 PortMatrixColumnLabels::button_press (double x, double y, int b, uint32_t t)
 423 {
 424         uint32_t N = _matrix->columns()->total_visible_ports ();
 425         uint32_t i = 0;
 426         for (; i < N; ++i) {
 427
 428                 std::vector<std::pair<double, double> > const shape = port_name_shape (i * column_width(), 0);
 429
 430                 uint32_t j = 0;
 431                 for (; j < 4; ++j) {
 432                         uint32_t k = (j + 1) % 4;
 433
 434                         double const P = (y - shape[j].second) * (shape[k].first - shape[j].first) -
 435                                 (x - shape[j].first) * (shape[k].second - shape[j].second);
 436
 437                         if (P > 0) {
 438                                 break;
 439                         }
 440                 }
 441
 442                 if (j == 4) {
 443                         break;
 444                 }
 445         }
 446
 447         if (i == N) {
 448                 return;
 449         }
 450
 451         switch (b) {
 452         case 1:
 453                 _body->highlight_associated_channels (_matrix->column_index(), i);
 454                 break;
 455         case 3:
 456                 maybe_popup_context_menu (i, t);
 457                 break;
 458         }
 459 }
 460
 461
 462 void
 463 PortMatrixColumnLabels::maybe_popup_context_menu (int i, uint32_t t)
 464 {
 465         if (!_matrix->can_rename_channels (_matrix->column_index()) &&
 466             !_matrix->can_remove_channels (_matrix->column_index())) {
 467                 return;
 468         }
 469
 470         _matrix->popup_channel_context_menu (_matrix->column_index(), i, t);
 471 }