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 #include "i18n.h"
  29
  30 using namespace std;
  31
  32 PortMatrixColumnLabels::PortMatrixColumnLabels (PortMatrix* m, PortMatrixBody* b)
  33         : PortMatrixLabels (m, b),
  34           _overhang (0)
  35 {
  36
  37 }
  38
  39 void
  40 PortMatrixColumnLabels::compute_dimensions ()
  41 {
  42         GdkPixmap* pm = gdk_pixmap_new (NULL, 1, 1, gdk_visual_get_depth (gdk_visual_get_system ()));
  43         gdk_drawable_set_colormap (pm, gdk_colormap_get_system());
  44         cairo_t* cr = gdk_cairo_create (pm);
  45
  46         /* width of the longest bundle name */
  47         _longest_bundle_name = 0;
  48         /* width of the longest channel name */
  49         _longest_channel_name = 0;
  50
  51         /* Compute dimensions using all port groups, so that we allow for the largest and hence
  52            we can change between visible groups without the size of the labels jumping around.
  53         */
  54
  55         for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
  56                 PortGroup::BundleList const c = _matrix->columns()->bundles();
  57                 for (PortGroup::BundleList::const_iterator j = c.begin (); j != c.end(); ++j) {
  58
  59                         cairo_text_extents_t ext;
  60                         cairo_text_extents (cr, (*j)->bundle->name().c_str(), &ext);
  61                         if (ext.width > _longest_bundle_name) {
  62                                 _longest_bundle_name = ext.width;
  63                         }
  64
  65                         for (uint32_t k = 0; k < (*j)->bundle->nchannels().n_total(); ++k) {
  66
  67                                 if (!_matrix->should_show ((*j)->bundle->channel_type(k))) {
  68                                         continue;
  69                                 }
  70
  71                                 cairo_text_extents (
  72                                         cr,
  73                                         (*j)->bundle->channel_name (k).c_str(),
  74                                         &ext
  75                                         );
  76
  77                                 if (ext.width > _longest_channel_name) {
  78                                         _longest_channel_name = ext.width;
  79                                 }
  80                         }
  81                 }
  82         }
  83
  84         /* height metrics */
  85         cairo_text_extents_t ext;
  86         cairo_text_extents (cr, X_("AQRjpy"), &ext);
  87         _text_height = ext.height;
  88         _descender_height = ext.height + ext.y_bearing;
  89
  90         /* width of the whole thing */
  91         if (_matrix->visible_columns()) {
  92                 _width = group_size (_matrix->visible_columns()) * grid_spacing ();
  93         } else {
  94                 _width = 0;
  95         }
  96
  97         cairo_destroy (cr);
  98         g_object_unref (pm);
  99
 100         /* height of the whole thing */
 101
 102         int a = _longest_bundle_name + 4 * name_pad();
 103         if (!_matrix->show_only_bundles()) {
 104                 a += _longest_channel_name;
 105         }
 106
 107         _height =  a * sin (angle()) + _text_height * cos (angle());
 108         _overhang = _height / tan (angle ());
 109         _width += _overhang;
 110 }
 111
 112 double
 113 PortMatrixColumnLabels::basic_text_x_pos (int) const
 114 {
 115         return grid_spacing() / 2 +
 116                 _text_height / (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         /* BUNDLE PARALLELOGRAM-TYPE-THING AND NAME */
 129
 130         double x = 0;
 131         int N = 0;
 132
 133         PortGroup::BundleList const & bundles = _matrix->visible_columns()->bundles ();
 134         for (PortGroup::BundleList::const_iterator i = bundles.begin (); i != bundles.end(); ++i) {
 135
 136                 Gdk::Color c = (*i)->has_colour ? (*i)->colour : get_a_bundle_colour (N);
 137                 render_bundle_name (cr, background_colour (), c, x, 0, (*i)->bundle);
 138
 139                 if (_matrix->show_only_bundles()) {
 140                         x += grid_spacing();
 141                 } else {
 142                         x += _matrix->count_of_our_type_min_1 ((*i)->bundle->nchannels()) * grid_spacing();
 143                 }
 144
 145                 ++N;
 146         }
 147
 148         /* PORT NAMES */
 149
 150         if (!_matrix->show_only_bundles()) {
 151                 x = 0;
 152                 N = 0;
 153
 154                 for (PortGroup::BundleList::const_iterator i = bundles.begin (); i != bundles.end(); ++i) {
 155
 156                         uint32_t const C = _matrix->count_of_our_type ((*i)->bundle->nchannels ());
 157
 158                         for (uint32_t j = 0; j < C; ++j) {
 159                                 Gdk::Color c = (*i)->has_colour ? (*i)->colour : get_a_bundle_colour (N);
 160                                 render_channel_name (cr, background_colour (), c, x, 0, ARDOUR::BundleChannel ((*i)->bundle, j));
 161                                 x += grid_spacing();
 162                         }
 163
 164                         if (C == 0) {
 165                                 x += grid_spacing ();
 166                         }
 167
 168                         ++N;
 169                 }
 170         }
 171 }
 172
 173 double
 174 PortMatrixColumnLabels::component_to_parent_x (double x) const
 175 {
 176         return x - _body->xoffset() + _parent_rectangle.get_x();
 177 }
 178
 179 double
 180 PortMatrixColumnLabels::parent_to_component_x (double x) const
 181 {
 182         return x + _body->xoffset() - _parent_rectangle.get_x();
 183 }
 184
 185 double
 186 PortMatrixColumnLabels::component_to_parent_y (double y) const
 187 {
 188         /* Column labels don't scroll vertically, so y conversion does not depend on yoffset */
 189         return y + _parent_rectangle.get_y();
 190 }
 191
 192 double
 193 PortMatrixColumnLabels::parent_to_component_y (double y) const
 194 {
 195         /* Column labels don't scroll vertically, so y conversion does not depend on yoffset */
 196         return y - _parent_rectangle.get_y();
 197 }
 198
 199 void
 200 PortMatrixColumnLabels::mouseover_changed (list<PortMatrixNode> const &)
 201 {
 202         list<PortMatrixNode> const m = _body->mouseover ();
 203         for (list<PortMatrixNode>::const_iterator i = m.begin(); i != m.end(); ++i) {
 204
 205                 ARDOUR::BundleChannel c = i->column;
 206                 ARDOUR::BundleChannel r = i->row;
 207
 208                 if (PortMatrix::bundle_with_channels (c.bundle) && PortMatrix::bundle_with_channels (r.bundle)) {
 209                         add_channel_highlight (c);
 210                 } else if (c.bundle) {
 211                         _body->highlight_associated_channels (_matrix->column_index(), c);
 212                 }
 213         }
 214 }
 215
 216 vector<pair<double, double> >
 217 PortMatrixColumnLabels::port_name_shape (double xoff, double yoff) const
 218 {
 219         vector<pair<double, double> > shape;
 220
 221         double const lc = _longest_channel_name + name_pad();
 222         double const w = grid_spacing();
 223
 224         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 225
 226                 double x_ = xoff + _height / tan (angle()) + w;
 227                 double y_ = yoff;
 228                 shape.push_back (make_pair (x_, y_));
 229                 x_ -= w;
 230                 shape.push_back (make_pair (x_, y_));
 231                 x_ -= lc * cos (angle());
 232                 y_ += lc * sin (angle());
 233                 shape.push_back (make_pair (x_, y_));
 234                 x_ += w * pow (sin (angle()), 2);
 235                 y_ += w * sin (angle()) * cos (angle());
 236                 shape.push_back (make_pair (x_, y_));
 237
 238         } else {
 239
 240                 double x_ = xoff;
 241                 double y_ = yoff + _height;
 242                 shape.push_back (make_pair (x_, y_));
 243                 x_ += w;
 244                 shape.push_back (make_pair (x_, y_));
 245                 x_ += lc * cos (angle());
 246                 y_ -= lc * sin (angle());
 247                 shape.push_back (make_pair (x_, y_));
 248                 x_ -= grid_spacing() * pow (sin (angle()), 2);
 249                 y_ -= grid_spacing() * sin (angle()) * cos (angle());
 250                 shape.push_back (make_pair (x_, y_));
 251         }
 252
 253         return shape;
 254 }
 255
 256 void
 257 PortMatrixColumnLabels::render_bundle_name (
 258         cairo_t* cr, Gdk::Color fg_colour, Gdk::Color bg_colour, double xoff, double yoff, boost::shared_ptr<ARDOUR::Bundle> b
 259         )
 260 {
 261         set_source_rgb (cr, bg_colour);
 262
 263         double w = 0;
 264         if (_matrix->show_only_bundles()) {
 265                 w = grid_spacing ();
 266         } else {
 267                 w = _matrix->count_of_our_type_min_1 (b->nchannels()) * grid_spacing();
 268         }
 269
 270         double x_ = xoff;
 271
 272         uint32_t y = yoff;
 273         y += _height;
 274
 275         double y_ = y;
 276         cairo_move_to (cr, x_, y_);
 277         x_ += w;
 278         cairo_line_to (cr, x_, y_);
 279         x_ += _height / tan (angle ());
 280         y_ -= _height;
 281         cairo_line_to (cr, x_, y_);
 282         x_ -= w;
 283         cairo_line_to (cr, x_, y_);
 284         cairo_line_to (cr, xoff, y);
 285         cairo_fill_preserve (cr);
 286         set_source_rgb (cr, fg_colour);
 287         cairo_set_line_width (cr, label_border_width());
 288         cairo_stroke (cr);
 289
 290         set_source_rgb (cr, text_colour());
 291
 292         double const q = ((grid_spacing() * sin (angle())) - _text_height) / 2 + _descender_height;
 293
 294         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 295
 296                 double rl = 0;
 297                 if (_matrix->show_only_bundles()) {
 298                         rl = name_pad();
 299                 } else {
 300                         rl = 3 * name_pad() + _longest_channel_name;
 301                 }
 302                 cairo_move_to (
 303                         cr,
 304                         xoff + grid_spacing() - q * sin (angle ()) + rl * cos (angle()),
 305                         yoff + _height - q * cos (angle ()) - rl * sin (angle())
 306                         );
 307
 308         } else {
 309
 310                 cairo_move_to (
 311                         cr,
 312                         xoff + grid_spacing() - q * sin (angle ()),
 313                         yoff + _height - q * cos (angle ())
 314                         );
 315         }
 316
 317         cairo_save (cr);
 318         cairo_rotate (cr, -angle());
 319         cairo_show_text (cr, b->name().c_str());
 320         cairo_restore (cr);
 321 }
 322
 323 void
 324 PortMatrixColumnLabels::render_channel_name (
 325         cairo_t* cr, Gdk::Color fg_colour, Gdk::Color bg_colour, double xoff, double yoff, ARDOUR::BundleChannel const &bc
 326         )
 327 {
 328         vector<pair<double, double> > const shape = port_name_shape (xoff, yoff);
 329
 330         cairo_move_to (cr, shape[0].first, shape[0].second);
 331         for (uint32_t i = 1; i < 4; ++i) {
 332                 cairo_line_to (cr, shape[i].first, shape[i].second);
 333         }
 334         cairo_line_to (cr, shape[0].first, shape[0].second);
 335
 336         set_source_rgb (cr, bg_colour);
 337         cairo_fill_preserve (cr);
 338         set_source_rgb (cr, fg_colour);
 339         cairo_set_line_width (cr, label_border_width());
 340         cairo_stroke (cr);
 341
 342         set_source_rgb (cr, text_colour());
 343
 344         double const q = ((grid_spacing() * sin (angle())) - _text_height) / 2 + _descender_height;
 345
 346         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 347
 348                 cairo_move_to (
 349                         cr,
 350                         xoff + grid_spacing() - q * sin (angle ()),
 351                         yoff + _height - q * cos (angle ())
 352                         );
 353
 354
 355         } else {
 356
 357                 double const rl = 3 * name_pad() + _longest_bundle_name;
 358                 cairo_move_to (
 359                         cr,
 360                         xoff + grid_spacing() - q * sin (angle ()) + rl * cos (angle ()),
 361                         yoff + _height - q * cos (angle ()) - rl * sin (angle())
 362                         );
 363         }
 364
 365         if (_matrix->count_of_our_type (bc.bundle->nchannels()) > 1) {
 366
 367                 /* only plot the name if the bundle has more than one channel;
 368                    the name of a single channel is assumed to be redundant */
 369
 370                 cairo_save (cr);
 371                 cairo_rotate (cr, -angle());
 372
 373                 cairo_show_text (
 374                         cr,
 375                         bc.bundle->channel_name(bc.channel).c_str()
 376                         );
 377
 378                 cairo_restore (cr);
 379         }
 380 }
 381
 382 double
 383 PortMatrixColumnLabels::channel_x (ARDOUR::BundleChannel const &bc) const
 384 {
 385         return channel_to_position (bc, _matrix->visible_columns()) * grid_spacing ();
 386 }
 387
 388 double
 389 PortMatrixColumnLabels::channel_y (ARDOUR::BundleChannel const &) const
 390 {
 391         return 0;
 392 }
 393
 394 void
 395 PortMatrixColumnLabels::queue_draw_for (ARDOUR::BundleChannel const & bc)
 396 {
 397         if (!bc.bundle) {
 398                 return;
 399         }
 400
 401         if (_matrix->show_only_bundles()) {
 402
 403                 _body->queue_draw_area (
 404                         component_to_parent_x (channel_x (bc)) - 1,
 405                         component_to_parent_y (0) - 1,
 406                         grid_spacing() + _height * tan (angle()) + 2,
 407                         _height + 2
 408                         );
 409
 410         } else {
 411
 412                 double const x = channel_x (bc);
 413                 double const lc = _longest_channel_name + name_pad();
 414                 double const h = lc * sin (angle ()) + grid_spacing() * sin (angle()) * cos (angle());
 415
 416                 if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 417
 418                         _body->queue_draw_area (
 419                                 component_to_parent_x (x) - 1,
 420                                 component_to_parent_y (_height - h) - 1,
 421                                 grid_spacing() + lc * cos (angle()) + 2,
 422                                 h + 2
 423                                 );
 424
 425                 } else if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 426
 427                         double const x_ = x + _height / tan (angle()) - lc * cos (angle());
 428
 429                         _body->queue_draw_area (
 430                                 component_to_parent_x (x_) - 1,
 431                                 component_to_parent_y (0) - 1,
 432                                 grid_spacing() + lc * cos (angle()) + 2,
 433                                 h + 2
 434                                 );
 435
 436                 }
 437
 438         }
 439 }
 440
 441 ARDOUR::BundleChannel
 442 PortMatrixColumnLabels::position_to_channel (double p, double o, boost::shared_ptr<const PortGroup> group) const
 443 {
 444         uint32_t const cx = p - (_height - o) * tan (angle ());
 445         return PortMatrixComponent::position_to_channel (cx, o, group);
 446 }
 447
 448 void
 449 PortMatrixColumnLabels::button_press (double x, double y, int b, uint32_t t, guint)
 450 {
 451         ARDOUR::BundleChannel w = position_to_channel (x, y, _matrix->visible_columns());
 452
 453         if (
 454                 (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && y > (_height - _longest_bundle_name * sin (angle ()))) ||
 455                 (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && y < (_longest_bundle_name * sin (angle ())))
 456                 ) {
 457
 458                 w.channel = -1;
 459         }
 460
 461         if (b == 3) {
 462                 _matrix->popup_menu (
 463                         w,
 464                         ARDOUR::BundleChannel (),
 465                         t
 466                         );
 467         }
 468 }
 469
 470 void
 471 PortMatrixColumnLabels::motion (double x, double y)
 472 {
 473         ARDOUR::BundleChannel const w = position_to_channel (x, y, _matrix->visible_columns());
 474
 475         if (w.bundle == 0) {
 476                 _body->set_mouseover (PortMatrixNode ());
 477                 return;
 478         }
 479
 480         uint32_t const bh = _longest_channel_name * sin (angle ()) + _text_height / cos (angle ());
 481
 482         if (
 483                 (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && y > bh) ||
 484                 (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && y < (_height - bh))
 485                 ) {
 486
 487                 /* if the mouse is over a bundle name, highlight all channels in the bundle */
 488
 489                 list<PortMatrixNode> n;
 490
 491                 uint32_t const N = _matrix->count_of_our_type (w.bundle->nchannels ());
 492
 493                 for (uint32_t i = 0; i < N; ++i) {
 494                         ARDOUR::BundleChannel const bc (w.bundle, i);
 495                         n.push_back (PortMatrixNode (ARDOUR::BundleChannel (), bc));
 496                 }
 497
 498                 _body->set_mouseover (n);
 499
 500         } else {
 501
 502                 _body->set_mouseover (PortMatrixNode (ARDOUR::BundleChannel (), w));
 503         }
 504 }