gtk2_ardour/port_matrix_row_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 <boost/weak_ptr.hpp>
  22 #include <cairo/cairo.h>
  23 #include "ardour/bundle.h"
  24 #include "port_matrix_row_labels.h"
  25 #include "port_matrix.h"
  26 #include "port_matrix_body.h"
  27 #include "i18n.h"
  28 #include "utils.h"
  29
  30 using namespace std;
  31
  32 PortMatrixRowLabels::PortMatrixRowLabels (PortMatrix* m, PortMatrixBody* b)
  33         : PortMatrixLabels (m, b)
  34 {
  35
  36 }
  37
  38 void
  39 PortMatrixRowLabels::compute_dimensions ()
  40 {
  41         GdkPixmap* pm = gdk_pixmap_new (NULL, 1, 1, 24);
  42         gdk_drawable_set_colormap (pm, gdk_colormap_get_system());
  43         cairo_t* cr = gdk_cairo_create (pm);
  44
  45         _longest_port_name = 0;
  46         _longest_bundle_name = 0;
  47
  48         /* Compute maximum dimensions using all port groups, so that we allow for the largest and hence
  49            we can change between visible groups without the size of the labels jumping around.
  50         */
  51
  52         for (PortGroupList::List::const_iterator i = _matrix->rows()->begin(); i != _matrix->rows()->end(); ++i) {
  53
  54                 PortGroup::BundleList const r = (*i)->bundles ();
  55                 for (PortGroup::BundleList::const_iterator j = r.begin(); j != r.end(); ++j) {
  56
  57                         for (uint32_t k = 0; k < (*j)->bundle->nchannels().n_total(); ++k) {
  58
  59                                 if (!_matrix->should_show ((*j)->bundle->channel_type(k))) {
  60                                         continue;
  61                                 }
  62
  63                                 cairo_text_extents_t ext;
  64                                 cairo_text_extents (cr, (*j)->bundle->channel_name(k).c_str(), &ext);
  65                                 if (ext.width > _longest_port_name) {
  66                                         _longest_port_name = ext.width;
  67                                 }
  68                         }
  69
  70                         cairo_text_extents_t ext;
  71                         cairo_text_extents (cr, (*j)->bundle->name().c_str(), &ext);
  72                         if (ext.width > _longest_bundle_name) {
  73                                 _longest_bundle_name = ext.width;
  74                         }
  75                 }
  76         }
  77
  78
  79         if (_matrix->visible_rows()) {
  80                 _height = group_size (_matrix->visible_rows()) * grid_spacing ();
  81         } else {
  82                 _height = 0;
  83         }
  84
  85         cairo_destroy (cr);
  86         g_object_unref (pm);
  87
  88         _width = _longest_bundle_name +
  89                 name_pad() * 2;
  90
  91         if (!_matrix->show_only_bundles()) {
  92                 _width += _longest_port_name;
  93                 _width += name_pad() * 2;
  94         }
  95 }
  96
  97
  98 void
  99 PortMatrixRowLabels::render (cairo_t* cr)
 100 {
 101         /* BACKGROUND */
 102
 103         set_source_rgb (cr, background_colour());
 104         cairo_rectangle (cr, 0, 0, _width, _height);
 105         cairo_fill (cr);
 106
 107         /* BUNDLE AND PORT NAMES */
 108
 109         double y = 0;
 110         int N = 0;
 111         int M = 0;
 112
 113         PortGroup::BundleList const & bundles = _matrix->visible_rows()->bundles ();
 114         for (PortGroup::BundleList::const_iterator i = bundles.begin(); i != bundles.end(); ++i) {
 115                 render_bundle_name (cr, background_colour (), (*i)->has_colour ? (*i)->colour : get_a_bundle_colour (N), 0, y, (*i)->bundle);
 116
 117                 if (!_matrix->show_only_bundles()) {
 118                         uint32_t const N = _matrix->count_of_our_type ((*i)->bundle->nchannels());
 119                         for (uint32_t j = 0; j < N; ++j) {
 120                                 Gdk::Color c = (*i)->has_colour ? (*i)->colour : get_a_bundle_colour (M);
 121                                 render_channel_name (cr, background_colour (), c, 0, y, ARDOUR::BundleChannel ((*i)->bundle, j));
 122                                 y += grid_spacing();
 123                                 ++M;
 124                         }
 125
 126                         if (N == 0) {
 127                                 y += grid_spacing ();
 128                         }
 129
 130                 } else {
 131                         y += grid_spacing();
 132                 }
 133
 134                 ++N;
 135         }
 136 }
 137
 138 void
 139 PortMatrixRowLabels::button_press (double x, double y, int b, uint32_t t, guint)
 140 {
 141         ARDOUR::BundleChannel w = position_to_channel (y, x, _matrix->visible_rows());
 142
 143         if (
 144                 (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && x > (_longest_port_name + name_pad() * 2)) ||
 145                 (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && x < (_longest_bundle_name + name_pad() * 2))
 146
 147                 ) {
 148                         w.channel = -1;
 149         }
 150
 151         if (b == 3) {
 152
 153                 _matrix->popup_menu (
 154                         ARDOUR::BundleChannel (),
 155                         w,
 156                         t
 157                         );
 158         }
 159 }
 160
 161 double
 162 PortMatrixRowLabels::component_to_parent_x (double x) const
 163 {
 164         /* Row labels don't scroll horizontally, so x conversion does not depend on xoffset */
 165         return x + _parent_rectangle.get_x();
 166 }
 167
 168 double
 169 PortMatrixRowLabels::parent_to_component_x (double x) const
 170 {
 171         /* Row labels don't scroll horizontally, so x conversion does not depend on xoffset */
 172         return x - _parent_rectangle.get_x();
 173 }
 174
 175 double
 176 PortMatrixRowLabels::component_to_parent_y (double y) const
 177 {
 178         return y - _body->yoffset() + _parent_rectangle.get_y();
 179 }
 180
 181 double
 182 PortMatrixRowLabels::parent_to_component_y (double y) const
 183 {
 184         return y + _body->yoffset() - _parent_rectangle.get_y();
 185 }
 186
 187
 188 double
 189 PortMatrixRowLabels::bundle_name_x () const
 190 {
 191         double x = 0;
 192
 193         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && !_matrix->show_only_bundles ()) {
 194                 x = _longest_port_name + name_pad() * 2;
 195         }
 196
 197         return x;
 198 }
 199
 200 double
 201 PortMatrixRowLabels::port_name_x () const
 202 {
 203         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 204                 return _longest_bundle_name + name_pad() * 2;
 205         } else {
 206                 return 0;
 207         }
 208
 209         return 0;
 210 }
 211
 212 void
 213 PortMatrixRowLabels::render_bundle_name (
 214         cairo_t* cr, Gdk::Color fg_colour, Gdk::Color bg_colour, double xoff, double yoff, boost::shared_ptr<ARDOUR::Bundle> b
 215         )
 216 {
 217         double const x = bundle_name_x ();
 218
 219         int const n = _matrix->show_only_bundles() ? 1 : _matrix->count_of_our_type_min_1 (b->nchannels());
 220         set_source_rgb (cr, bg_colour);
 221         cairo_rectangle (cr, xoff + x, yoff, _longest_bundle_name + name_pad() * 2, grid_spacing() * n);
 222         cairo_fill_preserve (cr);
 223         set_source_rgb (cr, fg_colour);
 224         cairo_set_line_width (cr, label_border_width ());
 225         cairo_stroke (cr);
 226
 227         cairo_text_extents_t ext;
 228         cairo_text_extents (cr, b->name().c_str(), &ext);
 229         double const off = (grid_spacing() - ext.height) / 2;
 230
 231         set_source_rgb (cr, text_colour());
 232         cairo_move_to (cr, xoff + x + name_pad(), yoff + name_pad() + off);
 233         cairo_show_text (cr, b->name().c_str());
 234 }
 235
 236 void
 237 PortMatrixRowLabels::render_channel_name (
 238         cairo_t* cr, Gdk::Color fg_colour, Gdk::Color bg_colour, double xoff, double yoff, ARDOUR::BundleChannel const& bc
 239         )
 240 {
 241         set_source_rgb (cr, bg_colour);
 242         cairo_rectangle (cr, port_name_x() + xoff, yoff, _longest_port_name + name_pad() * 2, grid_spacing());
 243         cairo_fill_preserve (cr);
 244         set_source_rgb (cr, fg_colour);
 245         cairo_set_line_width (cr, label_border_width ());
 246         cairo_stroke (cr);
 247
 248         if (_matrix->count_of_our_type (bc.bundle->nchannels()) > 1) {
 249
 250                 /* only plot the name if the bundle has more than one channel;
 251                    the name of a single channel is assumed to be redundant */
 252
 253                 cairo_text_extents_t ext;
 254                 cairo_text_extents (cr, bc.bundle->channel_name(bc.channel).c_str(), &ext);
 255                 double const off = (grid_spacing() - ext.height) / 2;
 256
 257                 set_source_rgb (cr, text_colour());
 258                 cairo_move_to (cr, port_name_x() + xoff + name_pad(), yoff + name_pad() + off);
 259                 cairo_show_text (cr, bc.bundle->channel_name(bc.channel).c_str());
 260         }
 261 }
 262
 263 double
 264 PortMatrixRowLabels::channel_x (ARDOUR::BundleChannel const &) const
 265 {
 266         return 0;
 267 }
 268
 269 double
 270 PortMatrixRowLabels::channel_y (ARDOUR::BundleChannel const& bc) const
 271 {
 272         return channel_to_position (bc, _matrix->visible_rows()) * grid_spacing ();
 273 }
 274
 275 void
 276 PortMatrixRowLabels::queue_draw_for (ARDOUR::BundleChannel const & bc)
 277 {
 278         if (bc.bundle) {
 279
 280                 if (_matrix->show_only_bundles()) {
 281                         _body->queue_draw_area (
 282                                 component_to_parent_x (bundle_name_x()) - 1,
 283                                 component_to_parent_y (channel_y (bc)) - 1,
 284                                 _longest_bundle_name + name_pad() * 2 + 2,
 285                                 grid_spacing() + 2
 286                                 );
 287                 } else {
 288                         _body->queue_draw_area (
 289                                 component_to_parent_x (port_name_x()) - 1,
 290                                 component_to_parent_y (channel_y (bc)) - 1,
 291                                 _longest_port_name + name_pad() * 2 + 2,
 292                                 grid_spacing() + 2
 293                                 );
 294                 }
 295         }
 296
 297 }
 298
 299 void
 300 PortMatrixRowLabels::mouseover_changed (list<PortMatrixNode> const &)
 301 {
 302         list<PortMatrixNode> const m = _body->mouseover ();
 303         for (list<PortMatrixNode>::const_iterator i = m.begin(); i != m.end(); ++i) {
 304
 305                 ARDOUR::BundleChannel c = i->column;
 306                 ARDOUR::BundleChannel r = i->row;
 307
 308                 if (PortMatrix::bundle_with_channels (c.bundle) && PortMatrix::bundle_with_channels (r.bundle)) {
 309                         add_channel_highlight (r);
 310                 } else if (r.bundle) {
 311                         _body->highlight_associated_channels (_matrix->row_index(), r);
 312                 }
 313         }
 314 }
 315
 316 void
 317 PortMatrixRowLabels::motion (double x, double y)
 318 {
 319         ARDOUR::BundleChannel const w = position_to_channel (y, x, _matrix->visible_rows());
 320
 321         uint32_t const bw = _longest_bundle_name + 2 * name_pad();
 322
 323         bool done = false;
 324
 325         if (w.bundle) {
 326
 327                 if (
 328                         (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && x < bw) ||
 329                         (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && x > (_width - bw) && x < _width)
 330
 331                         ) {
 332
 333                         /* if the mouse is over a bundle name, highlight all channels in the bundle */
 334
 335                         list<PortMatrixNode> n;
 336
 337                         for (uint32_t i = 0; i < w.bundle->nchannels().n_total(); ++i) {
 338
 339                                 if (!_matrix->should_show (w.bundle->channel_type(i))) {
 340                                         continue;
 341                                 }
 342
 343                                 ARDOUR::BundleChannel const bc (w.bundle, i);
 344                                 n.push_back (PortMatrixNode (bc, ARDOUR::BundleChannel ()));
 345                         }
 346
 347                         _body->set_mouseover (n);
 348                         done = true;
 349
 350                 } else if (x < _width) {
 351
 352                         _body->set_mouseover (PortMatrixNode (w, ARDOUR::BundleChannel ()));
 353                         done = true;
 354
 355                 }
 356
 357         }
 358
 359         if (!done) {
 360                 /* not over any bundle */
 361                 _body->set_mouseover (PortMatrixNode ());
 362                 return;
 363         }
 364 }