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
  26 PortMatrixColumnLabels::PortMatrixColumnLabels (PortMatrixBody* b, Location l)
  27         : PortMatrixComponent (b), _location (l)
  28 {
  29
  30 }
  31
  32 void
  33 PortMatrixColumnLabels::compute_dimensions ()
  34 {
  35         GdkPixmap* pm = gdk_pixmap_new (NULL, 1, 1, 24);
  36         gdk_drawable_set_colormap (pm, gdk_colormap_get_system());
  37         cairo_t* cr = gdk_cairo_create (pm);
  38
  39         /* width of the longest bundle name */
  40         _longest_bundle_name = 0;
  41         /* width of the longest channel name */
  42         _longest_channel_name = 0;
  43         /* height of highest bit of text (apart from group names) */
  44         _highest_text = 0;
  45         /* width of the whole thing */
  46         _width = 0;
  47
  48         ARDOUR::BundleList const c = _body->column_ports().bundles();
  49         for (ARDOUR::BundleList::const_iterator i = c.begin (); i != c.end(); ++i) {
  50
  51                 cairo_text_extents_t ext;
  52                 cairo_text_extents (cr, (*i)->name().c_str(), &ext);
  53                 if (ext.width > _longest_bundle_name) {
  54                         _longest_bundle_name = ext.width;
  55                 }
  56                 if (ext.height > _highest_text) {
  57                         _highest_text = ext.height;
  58                 }
  59
  60                 for (uint32_t j = 0; j < (*i)->nchannels (); ++j) {
  61
  62                         cairo_text_extents (
  63                                 cr,
  64                                 (*i)->channel_name (j).c_str(),
  65                                 &ext
  66                                 );
  67
  68                         if (ext.width > _longest_channel_name) {
  69                                 _longest_channel_name = ext.width;
  70                         }
  71                         if (ext.height > _highest_text) {
  72                                 _highest_text = ext.height;
  73                         }
  74                 }
  75
  76                 _width += (*i)->nchannels() * column_width();
  77         }
  78
  79         _highest_group_name = 0;
  80         for (PortGroupList::const_iterator i = _body->column_ports().begin(); i != _body->column_ports().end(); ++i) {
  81                 if ((*i)->visible()) {
  82                         cairo_text_extents_t ext;
  83                         cairo_text_extents (cr, (*i)->name.c_str(), &ext);
  84                         if (ext.height > _highest_group_name) {
  85                                 _highest_group_name = ext.height;
  86                         }
  87                 }
  88         }
  89
  90         cairo_destroy (cr);
  91         gdk_pixmap_unref (pm);
  92
  93         /* height of the whole thing */
  94
  95         double const parallelogram_height =
  96                 (_longest_bundle_name + _longest_channel_name + 4 * name_pad()) * sin (angle())
  97                 + _highest_text * cos (angle());
  98
  99         _height = parallelogram_height + _highest_group_name + 2 * name_pad();
 100
 101         _width += parallelogram_height / tan (angle ());
 102 }
 103
 104 double
 105 PortMatrixColumnLabels::basic_text_x_pos (int c) const
 106 {
 107         return column_width() / 2 +
 108                 _highest_text / (2 * sin (angle ()));
 109 }
 110
 111 void
 112 PortMatrixColumnLabels::render (cairo_t* cr)
 113 {
 114         /* BACKGROUND */
 115
 116         set_source_rgb (cr, background_colour());
 117         cairo_rectangle (cr, 0, 0, _width, _height);
 118         cairo_fill (cr);
 119
 120         /* PORT GROUP NAME */
 121
 122         double x = 0;
 123         double y = 0;
 124
 125         if (_location == TOP) {
 126                 x = slanted_height() / tan (angle());
 127                 y = _highest_group_name + name_pad();
 128         } else {
 129                 x = 0;
 130                 y = _height - name_pad();
 131         }
 132
 133         int g = 0;
 134         for (PortGroupList::const_iterator i = _body->column_ports().begin(); i != _body->column_ports().end(); ++i) {
 135
 136                 if (!(*i)->visible() || ((*i)->bundles().empty() && (*i)->ports.empty()) ) {
 137                         continue;
 138                 }
 139
 140                 /* compute width of this group */
 141                 uint32_t w = 0;
 142                 for (ARDOUR::BundleList::const_iterator j = (*i)->bundles().begin(); j != (*i)->bundles().end(); ++j) {
 143                         w += (*j)->nchannels() * column_width();
 144                 }
 145                 w += (*i)->ports.size() * column_width();
 146
 147                 /* rectangle */
 148                 set_source_rgb (cr, get_a_group_colour (g));
 149                 double const rh = _highest_group_name + 2 * name_pad();
 150                 if (_location == TOP) {
 151                         cairo_rectangle (cr, x, 0, w, rh);
 152                 } else if (_location == BOTTOM) {
 153                         cairo_rectangle (cr, x, _height - rh, w, rh);
 154                 }
 155                 cairo_fill (cr);
 156
 157                 std::pair<std::string, double> const display = display_port_name (cr, (*i)->name, w);
 158
 159                 /* plot it */
 160                 set_source_rgb (cr, text_colour());
 161                 cairo_move_to (cr, x + (w - display.second) / 2, y);
 162                 cairo_show_text (cr, display.first.c_str());
 163
 164                 x += w;
 165                 ++g;
 166         }
 167
 168         /* BUNDLE PARALLELOGRAM-TYPE-THING AND NAME */
 169
 170         x = 0;
 171         ARDOUR::BundleList const c = _body->column_ports().bundles();
 172         for (ARDOUR::BundleList::const_iterator i = c.begin (); i != c.end(); ++i) {
 173
 174                 Gdk::Color colour = get_a_bundle_colour (i - c.begin ());
 175                 set_source_rgb (cr, colour);
 176
 177                 double const w = (*i)->nchannels() * column_width();
 178
 179                 double x_ = x;
 180
 181                 if (_location == TOP) {
 182                         y = _height;
 183                 } else if (_location == BOTTOM) {
 184                         y = slanted_height();
 185                 }
 186
 187                 double y_ = y;
 188                 cairo_move_to (cr, x_, y_);
 189                 x_ += w;
 190                 cairo_line_to (cr, x_, y_);
 191                 x_ += slanted_height() / tan (angle ());
 192                 y_ -= slanted_height();
 193                 cairo_line_to (cr, x_, y_);
 194                 x_ -= w;
 195                 cairo_line_to (cr, x_, y_);
 196                 cairo_line_to (cr, x, y);
 197                 cairo_fill_preserve (cr);
 198                 set_source_rgb (cr, background_colour());
 199                 cairo_set_line_width (cr, label_border_width());
 200                 cairo_stroke (cr);
 201
 202                 set_source_rgb (cr, text_colour());
 203
 204                 if (_location == TOP) {
 205
 206                         double const rl = 3 * name_pad() + _longest_channel_name;
 207                         cairo_move_to (
 208                                 cr,
 209                                 x + basic_text_x_pos (0) + rl * cos (angle()),
 210                                 _height - rl * sin (angle())
 211                                 );
 212
 213                 } else if (_location == BOTTOM) {
 214
 215                         cairo_move_to (
 216                                 cr,
 217                                 x + basic_text_x_pos (0),
 218                                 slanted_height() - name_pad() * sin (angle())
 219                                 );
 220                 }
 221
 222                 cairo_save (cr);
 223                 cairo_rotate (cr, -angle());
 224                 cairo_show_text (cr, (*i)->name().c_str());
 225                 cairo_restore (cr);
 226
 227                 x += (*i)->nchannels () * column_width();
 228         }
 229
 230
 231         /* PORT NAMES */
 232
 233         x = 0;
 234         for (ARDOUR::BundleList::const_iterator i = c.begin (); i != c.end(); ++i) {
 235
 236                 for (uint32_t j = 0; j < (*i)->nchannels(); ++j) {
 237
 238                         render_port_name (cr, get_a_bundle_colour (i - c.begin()), x, 0, PortMatrixBundleChannel (*i, j));
 239                         x += column_width();
 240                 }
 241         }
 242 }
 243
 244 double
 245 PortMatrixColumnLabels::component_to_parent_x (double x) const
 246 {
 247         return x - _body->xoffset() + _parent_rectangle.get_x();
 248 }
 249
 250 double
 251 PortMatrixColumnLabels::parent_to_component_x (double x) const
 252 {
 253         return x + _body->xoffset() - _parent_rectangle.get_x();
 254 }
 255
 256 double
 257 PortMatrixColumnLabels::component_to_parent_y (double y) const
 258 {
 259         return y + _parent_rectangle.get_y();
 260 }
 261
 262 double
 263 PortMatrixColumnLabels::parent_to_component_y (double y) const
 264 {
 265         return y - _parent_rectangle.get_y();
 266 }
 267
 268 void
 269 PortMatrixColumnLabels::mouseover_changed (PortMatrixNode const& old)
 270 {
 271         queue_draw_for (old);
 272         queue_draw_for (_body->mouseover());
 273 }
 274
 275 void
 276 PortMatrixColumnLabels::draw_extra (cairo_t* cr)
 277 {
 278         if (_body->mouseover().column.bundle) {
 279                 render_port_name (
 280                         cr,
 281                         mouseover_port_colour (),
 282                         component_to_parent_x (channel_x (_body->mouseover().column)),
 283                         component_to_parent_y (0),
 284                         _body->mouseover().column
 285                         );
 286         }
 287 }
 288
 289 void
 290 PortMatrixColumnLabels::render_port_name (cairo_t* cr, Gdk::Color colour, double xoff, double yoff, PortMatrixBundleChannel const &bc)
 291 {
 292         double const lc = _longest_channel_name + name_pad();
 293         double const w = column_width();
 294
 295         if (_location == BOTTOM) {
 296
 297                 double x_ = xoff + slanted_height() / tan (angle()) + w;
 298                 double const ix = x_;
 299                 double y_ = yoff;
 300                 cairo_move_to (cr, x_, y_);
 301                 x_ -= w;
 302                 cairo_line_to (cr, x_, y_);
 303                 x_ -= lc * cos (angle());
 304                 y_ += lc * sin (angle());
 305                 cairo_line_to (cr, x_, y_);
 306                 x_ += w * pow (sin (angle()), 2);
 307                 y_ += w * sin (angle()) * cos (angle());
 308                 cairo_line_to (cr, x_, y_);
 309                 cairo_line_to (cr, ix, yoff);
 310
 311         } else if (_location == TOP) {
 312
 313                 double x_ = xoff;
 314                 double y_ = yoff + _height;
 315                 cairo_move_to (cr, x_, y_);
 316                 x_ += w;
 317                 cairo_line_to (cr, x_, y_);
 318                 x_ += lc * cos (angle());
 319                 y_ -= lc * sin (angle());
 320                 cairo_line_to (cr, x_, y_);
 321                 x_ -= column_width() * pow (sin (angle()), 2);
 322                 y_ -= column_width() * sin (angle()) * cos (angle());
 323                 cairo_line_to (cr, x_, y_);
 324                 cairo_line_to (cr, xoff, yoff + _height);
 325
 326         }
 327
 328         set_source_rgb (cr, colour);
 329         cairo_fill_preserve (cr);
 330         set_source_rgb (cr, background_colour());
 331         cairo_set_line_width (cr, label_border_width());
 332         cairo_stroke (cr);
 333
 334         set_source_rgb (cr, text_colour());
 335
 336         if (_location == TOP) {
 337
 338                 cairo_move_to (
 339                         cr,
 340                         xoff + basic_text_x_pos(bc.channel),
 341                         yoff + _height - name_pad() * sin (angle())
 342                         );
 343
 344         } else if (_location == BOTTOM) {
 345
 346                 double const rl = 3 * name_pad() + _longest_bundle_name;
 347                 cairo_move_to (
 348                         cr,
 349                         xoff + basic_text_x_pos(bc.channel) + rl * cos (angle ()),
 350                         yoff + slanted_height() - rl * sin (angle())
 351                         );
 352         }
 353
 354         cairo_save (cr);
 355         cairo_rotate (cr, -angle());
 356
 357         cairo_show_text (
 358                 cr,
 359                 bc.bundle->channel_name(bc.channel).c_str()
 360                 );
 361
 362         cairo_restore (cr);
 363 }
 364
 365 double
 366 PortMatrixColumnLabels::channel_x (PortMatrixBundleChannel const &bc) const
 367 {
 368         return bc.nchannels (_body->column_ports().bundles()) * column_width();
 369 }
 370
 371 void
 372 PortMatrixColumnLabels::queue_draw_for (PortMatrixNode const& n)
 373 {
 374         if (n.column.bundle) {
 375
 376                 double const x = channel_x (n.column);
 377                 double const lc = _longest_channel_name + name_pad();
 378                 double const h = lc * sin (angle ()) + column_width() * sin (angle()) * cos (angle());
 379                 if (_location == TOP) {
 380
 381                         _body->queue_draw_area (
 382                                 component_to_parent_x (x),
 383                                 component_to_parent_y (_height - h),
 384                                 column_width() + lc * cos (angle()),
 385                                 h
 386                                 );
 387
 388                 } else if (_location == BOTTOM) {
 389
 390                         double const x_ = x + slanted_height() / tan (angle()) - lc * cos (angle());
 391
 392                         _body->queue_draw_area (
 393                                 component_to_parent_x (x_),
 394                                 component_to_parent_y (0),
 395                                 column_width() + lc * cos (angle()),
 396                                 h
 397                                 );
 398
 399                 }
 400
 401
 402         }
 403 }