gtk2_ardour/port_matrix_grid.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 <cairo/cairo.h>
  22 #include "ardour/bundle.h"
  23 #include "ardour/types.h"
  24 #include "port_matrix_grid.h"
  25 #include "port_matrix.h"
  26 #include "port_matrix_body.h"
  27
  28 PortMatrixGrid::PortMatrixGrid (PortMatrix* m, PortMatrixBody* b)
  29         : PortMatrixComponent (m, b)
  30 {
  31
  32 }
  33
  34 void
  35 PortMatrixGrid::compute_dimensions ()
  36 {
  37         _width = 0;
  38         ARDOUR::BundleList const c = _matrix->columns()->bundles();
  39         for (ARDOUR::BundleList::const_iterator i = c.begin(); i != c.end(); ++i) {
  40                 _width += (*i)->nchannels() * column_width();
  41         }
  42
  43         _height = 0;
  44         ARDOUR::BundleList const r = _matrix->rows()->bundles();
  45         for (ARDOUR::BundleList::const_iterator i = r.begin(); i != r.end(); ++i) {
  46                 _height += (*i)->nchannels() * row_height();
  47         }
  48 }
  49
  50
  51 void
  52 PortMatrixGrid::render (cairo_t* cr)
  53 {
  54         /* BACKGROUND */
  55
  56         set_source_rgb (cr, background_colour());
  57         cairo_rectangle (cr, 0, 0, _width, _height);
  58         cairo_fill (cr);
  59
  60         /* VERTICAL GRID LINES */
  61
  62         set_source_rgb (cr, grid_colour());
  63         uint32_t x = 0;
  64         ARDOUR::BundleList const c = _matrix->columns()->bundles();
  65         for (ARDOUR::BundleList::size_type i = 0; i < c.size(); ++i) {
  66
  67                 cairo_set_line_width (cr, thin_grid_line_width());
  68                 for (uint32_t j = 1; j < c[i]->nchannels(); ++j) {
  69                         x += column_width();
  70                         cairo_move_to (cr, x, 0);
  71                         cairo_line_to (cr, x, _height);
  72                         cairo_stroke (cr);
  73                 }
  74
  75                 if (i < (c.size() - 1)) {
  76                         x += column_width();
  77                         cairo_set_line_width (cr, thick_grid_line_width());
  78                         cairo_move_to (cr, x, 0);
  79                         cairo_line_to (cr, x, _height);
  80                         cairo_stroke (cr);
  81                 }
  82         }
  83
  84         uint32_t grid_width = x + column_width();
  85
  86         /* HORIZONTAL GRID LINES */
  87
  88         uint32_t y = 0;
  89         ARDOUR::BundleList const r = _matrix->rows()->bundles();
  90         for (ARDOUR::BundleList::size_type i = 0; i < r.size(); ++i) {
  91
  92                 cairo_set_line_width (cr, thin_grid_line_width());
  93                 for (uint32_t j = 1; j < r[i]->nchannels(); ++j) {
  94                         y += row_height();
  95                         cairo_move_to (cr, 0, y);
  96                         cairo_line_to (cr, grid_width, y);
  97                         cairo_stroke (cr);
  98                 }
  99
 100                 if (i < (r.size() - 1)) {
 101                         y += row_height();
 102                         cairo_set_line_width (cr, thick_grid_line_width());
 103                         cairo_move_to (cr, 0, y);
 104                         cairo_line_to (cr, grid_width, y);
 105                         cairo_stroke (cr);
 106                 }
 107         }
 108
 109         /* ASSOCIATION INDICATORS */
 110
 111         uint32_t bx = 0;
 112         uint32_t by = 0;
 113
 114         for (ARDOUR::BundleList::const_iterator i = c.begin(); i < c.end(); ++i) {
 115                 by = 0;
 116
 117                 for (ARDOUR::BundleList::const_iterator j = r.begin(); j < r.end(); ++j) {
 118
 119                         x = bx;
 120                         for (uint32_t k = 0; k < (*i)->nchannels (); k++) {
 121
 122                                 y = by;
 123                                 for (uint32_t l = 0; l < (*j)->nchannels (); ++l) {
 124
 125                                         ARDOUR::BundleChannel c[2];
 126                                         c[_matrix->column_index()] = ARDOUR::BundleChannel (*i, k);
 127                                         c[_matrix->row_index()] = ARDOUR::BundleChannel (*j, l);
 128
 129                                         PortMatrix::State const s = _matrix->get_state (c);
 130
 131                                         switch (s) {
 132                                         case PortMatrix::ASSOCIATED:
 133                                                 set_source_rgba (cr, association_colour(), 0.5);
 134                                                 cairo_arc (
 135                                                         cr,
 136                                                         x + column_width() / 2,
 137                                                         y + column_width() / 2,
 138                                                         (column_width() - (2 * connection_indicator_pad())) / 2,
 139                                                         0,
 140                                                         2 * M_PI
 141                                                         );
 142
 143                                                 cairo_fill (cr);
 144                                                 break;
 145
 146                                         case PortMatrix::UNKNOWN:
 147                                                 set_source_rgba (cr, unknown_colour(), 0.5);
 148                                                 cairo_rectangle (
 149                                                         cr,
 150                                                         x + thick_grid_line_width(),
 151                                                         y + thick_grid_line_width(),
 152                                                         column_width() - 2 * thick_grid_line_width(),
 153                                                         row_height() - 2 * thick_grid_line_width()
 154                                                         );
 155                                                 cairo_fill (cr);
 156                                                 break;
 157
 158                                         case PortMatrix::NOT_ASSOCIATED:
 159                                                 break;
 160                                         }
 161
 162                                         y += row_height();
 163                                 }
 164                                 x += column_width();
 165                         }
 166
 167                         by += (*j)->nchannels () * row_height();
 168                 }
 169
 170                 bx += (*i)->nchannels () * column_width();
 171         }
 172 }
 173
 174
 175 PortMatrixNode
 176 PortMatrixGrid::position_to_node (double x, double y) const
 177 {
 178         return PortMatrixNode (
 179                 position_to_channel (y, _matrix->rows()->bundles(), row_height()),
 180                 position_to_channel (x, _matrix->columns()->bundles(), column_width())
 181                 );
 182 }
 183
 184
 185 ARDOUR::BundleChannel
 186 PortMatrixGrid::position_to_channel (double p, ARDOUR::BundleList const& bundles, double inc) const
 187 {
 188         uint32_t pos = p / inc;
 189
 190         for (ARDOUR::BundleList::const_iterator i = bundles.begin(); i != bundles.end(); ++i) {
 191                 if (pos < (*i)->nchannels()) {
 192                         return ARDOUR::BundleChannel (*i, pos);
 193                 } else {
 194                         pos -= (*i)->nchannels();
 195                 }
 196         }
 197
 198         return ARDOUR::BundleChannel (boost::shared_ptr<ARDOUR::Bundle> (), 0);
 199 }
 200
 201
 202 double
 203 PortMatrixGrid::channel_position (
 204         ARDOUR::BundleChannel bc,
 205         ARDOUR::BundleList const& bundles,
 206         double inc) const
 207 {
 208         double p = 0;
 209
 210         ARDOUR::BundleList::const_iterator i = bundles.begin ();
 211         while (i != bundles.end() && *i != bc.bundle) {
 212                 p += inc * (*i)->nchannels();
 213                 ++i;
 214         }
 215
 216         if (i == bundles.end()) {
 217                 return 0;
 218         }
 219
 220         p += inc * bc.channel;
 221
 222         return p;
 223 }
 224
 225 void
 226 PortMatrixGrid::button_press (double x, double y, int b)
 227 {
 228         PortMatrixNode const node = position_to_node (x, y);
 229
 230         if (node.row.bundle && node.column.bundle) {
 231
 232                 ARDOUR::BundleChannel c[2];
 233                 c[_matrix->row_index()] = node.row;
 234                 c[_matrix->column_index()] = node.column;
 235
 236                 PortMatrix::State const s = _matrix->get_state (c);
 237
 238                 if (s == PortMatrix::ASSOCIATED || s == PortMatrix::NOT_ASSOCIATED) {
 239
 240                         bool const n = !(s == PortMatrix::ASSOCIATED);
 241
 242                         ARDOUR::BundleChannel c[2];
 243                         c[_matrix->row_index()] = node.row;
 244                         c[_matrix->column_index()] = node.column;
 245
 246                         _matrix->set_state (c, n);
 247                 }
 248
 249                 require_render ();
 250                 _body->queue_draw ();
 251         }
 252 }
 253
 254 void
 255 PortMatrixGrid::draw_extra (cairo_t* cr)
 256 {
 257         set_source_rgba (cr, mouseover_line_colour(), 0.3);
 258         cairo_set_line_width (cr, mouseover_line_width());
 259
 260         double const x = component_to_parent_x (
 261                 channel_position (_body->mouseover().column, _matrix->columns()->bundles(), column_width()) + column_width() / 2
 262                 );
 263
 264         double const y = component_to_parent_y (
 265                 channel_position (_body->mouseover().row, _matrix->rows()->bundles(), row_height()) + row_height() / 2
 266                 );
 267
 268         if (_body->mouseover().row.bundle) {
 269
 270                 cairo_move_to (cr, x, y);
 271                 if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 272                         cairo_line_to (cr, component_to_parent_x (0), y);
 273                 } else if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 274                         cairo_line_to (cr, _parent_rectangle.get_x() + _parent_rectangle.get_width(), y);
 275                 }
 276                 cairo_stroke (cr);
 277         }
 278
 279         if (_body->mouseover().column.bundle) {
 280
 281                 cairo_move_to (cr, x, y);
 282                 if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 283                         cairo_line_to (cr, x, _parent_rectangle.get_y() + _parent_rectangle.get_height());
 284                 } else if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
 285                         cairo_line_to (cr, x, component_to_parent_y (0));
 286                 }
 287                 cairo_stroke (cr);
 288         }
 289 }
 290
 291 void
 292 PortMatrixGrid::mouseover_changed (PortMatrixNode const& old)
 293 {
 294         queue_draw_for (old);
 295         queue_draw_for (_body->mouseover());
 296 }
 297
 298 void
 299 PortMatrixGrid::mouseover_event (double x, double y)
 300 {
 301         _body->set_mouseover (position_to_node (x, y));
 302 }
 303
 304 void
 305 PortMatrixGrid::queue_draw_for (PortMatrixNode const &n)
 306 {
 307         if (n.row.bundle) {
 308
 309                 double const y = channel_position (n.row, _matrix->rows()->bundles(), row_height());
 310                 _body->queue_draw_area (
 311                         _parent_rectangle.get_x(),
 312                         component_to_parent_y (y),
 313                         _parent_rectangle.get_width(),
 314                         row_height()
 315                         );
 316         }
 317
 318         if (n.column.bundle) {
 319
 320                 double const x = channel_position (n.column, _matrix->columns()->bundles(), column_width());
 321
 322                 _body->queue_draw_area (
 323                         component_to_parent_x (x),
 324                         _parent_rectangle.get_y(),
 325                         column_width(),
 326                         _parent_rectangle.get_height()
 327                         );
 328         }
 329 }
 330
 331 double
 332 PortMatrixGrid::component_to_parent_x (double x) const
 333 {
 334         return x - _body->xoffset() + _parent_rectangle.get_x();
 335 }
 336
 337 double
 338 PortMatrixGrid::parent_to_component_x (double x) const
 339 {
 340         return x + _body->xoffset() - _parent_rectangle.get_x();
 341 }
 342
 343 double
 344 PortMatrixGrid::component_to_parent_y (double y) const
 345 {
 346         return y - _body->yoffset() + _parent_rectangle.get_y();
 347 }
 348
 349 double
 350 PortMatrixGrid::parent_to_component_y (double y) const
 351 {
 352         return y + _body->yoffset() - _parent_rectangle.get_y();
 353 }
 354