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