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                         for (uint32_t j = 0; j < (*i)->bundle->nchannels().n_total(); ++j) {
 119
 120                                 if (!_matrix->should_show ((*i)->bundle->channel_type(j))) {
 121                                         continue;
 122                                 }
 123
 124                                 Gdk::Color c = (*i)->has_colour ? (*i)->colour : get_a_bundle_colour (M);
 125                                 render_channel_name (cr, background_colour (), c, 0, y, ARDOUR::BundleChannel ((*i)->bundle, j));
 126                                 y += grid_spacing();
 127                                 ++M;
 128                         }
 129                 } else {
 130                         y += grid_spacing();
 131                 }
 132
 133                 ++N;
 134         }
 135 }
 136
 137 void
 138 PortMatrixRowLabels::button_press (double x, double y, int b, uint32_t t, guint)
 139 {
 140         ARDOUR::BundleChannel w = position_to_channel (y, x, _matrix->visible_rows());
 141
 142         if (
 143                 (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && x > (_longest_port_name + name_pad() * 2)) ||
 144                 (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && x < (_longest_bundle_name + name_pad() * 2))
 145
 146                 ) {
 147                         w.channel = -1;
 148         }
 149
 150         if (b == 3) {
 151
 152                 _matrix->popup_menu (
 153                         ARDOUR::BundleChannel (),
 154                         w,
 155                         t
 156                         );
 157         }
 158 }
 159
 160 double
 161 PortMatrixRowLabels::component_to_parent_x (double x) const
 162 {
 163         /* Row labels don't scroll horizontally, so x conversion does not depend on xoffset */
 164         return x + _parent_rectangle.get_x();
 165 }
 166
 167 double
 168 PortMatrixRowLabels::parent_to_component_x (double x) const
 169 {
 170         /* Row labels don't scroll horizontally, so x conversion does not depend on xoffset */
 171         return x - _parent_rectangle.get_x();
 172 }
 173
 174 double
 175 PortMatrixRowLabels::component_to_parent_y (double y) const
 176 {
 177         return y - _body->yoffset() + _parent_rectangle.get_y();
 178 }
 179
 180 double
 181 PortMatrixRowLabels::parent_to_component_y (double y) const
 182 {
 183         return y + _body->yoffset() - _parent_rectangle.get_y();
 184 }
 185
 186
 187 double
 188 PortMatrixRowLabels::bundle_name_x () const
 189 {
 190         double x = 0;
 191
 192         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && !_matrix->show_only_bundles ()) {
 193                 x = _longest_port_name + name_pad() * 2;
 194         }
 195
 196         return x;
 197 }
 198
 199 double
 200 PortMatrixRowLabels::port_name_x () const
 201 {
 202         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 203                 return _longest_bundle_name + name_pad() * 2;
 204         } else {
 205                 return 0;
 206         }
 207
 208         return 0;
 209 }
 210
 211 void
 212 PortMatrixRowLabels::render_bundle_name (
 213         cairo_t* cr, Gdk::Color fg_colour, Gdk::Color bg_colour, double xoff, double yoff, boost::shared_ptr<ARDOUR::Bundle> b
 214         )
 215 {
 216         double const x = bundle_name_x ();
 217
 218         int const n = _matrix->show_only_bundles() ? 1 : _matrix->count_of_our_type (b->nchannels());
 219         set_source_rgb (cr, bg_colour);
 220         cairo_rectangle (cr, xoff + x, yoff, _longest_bundle_name + name_pad() * 2, grid_spacing() * n);
 221         cairo_fill_preserve (cr);
 222         set_source_rgb (cr, fg_colour);
 223         cairo_set_line_width (cr, label_border_width ());
 224         cairo_stroke (cr);
 225
 226         cairo_text_extents_t ext;
 227         cairo_text_extents (cr, b->name().c_str(), &ext);
 228         double const off = (grid_spacing() - ext.height) / 2;
 229
 230         set_source_rgb (cr, text_colour());
 231         cairo_move_to (cr, xoff + x + name_pad(), yoff + name_pad() + off);
 232         cairo_show_text (cr, b->name().c_str());
 233 }
 234
 235 void
 236 PortMatrixRowLabels::render_channel_name (
 237         cairo_t* cr, Gdk::Color fg_colour, Gdk::Color bg_colour, double xoff, double yoff, ARDOUR::BundleChannel const& bc
 238         )
 239 {
 240         set_source_rgb (cr, bg_colour);
 241         cairo_rectangle (cr, port_name_x() + xoff, yoff, _longest_port_name + name_pad() * 2, grid_spacing());
 242         cairo_fill_preserve (cr);
 243         set_source_rgb (cr, fg_colour);
 244         cairo_set_line_width (cr, label_border_width ());
 245         cairo_stroke (cr);
 246
 247         cairo_text_extents_t ext;
 248         cairo_text_extents (cr, bc.bundle->channel_name(bc.channel).c_str(), &ext);
 249         double const off = (grid_spacing() - ext.height) / 2;
 250
 251         if (_matrix->count_of_our_type (bc.bundle->nchannels()) > 1) {
 252
 253                 /* only plot the name if the bundle has more than one channel;
 254                    the name of a single channel is assumed to be redundant */
 255
 256                 set_source_rgb (cr, text_colour());
 257                 cairo_move_to (cr, port_name_x() + xoff + name_pad(), yoff + name_pad() + off);
 258                 cairo_show_text (cr, bc.bundle->channel_name(bc.channel).c_str());
 259         }
 260 }
 261
 262 double
 263 PortMatrixRowLabels::channel_x (ARDOUR::BundleChannel const &) const
 264 {
 265         return 0;
 266 }
 267
 268 double
 269 PortMatrixRowLabels::channel_y (ARDOUR::BundleChannel const& bc) const
 270 {
 271         return channel_to_position (bc, _matrix->visible_rows()) * grid_spacing ();
 272 }
 273
 274 void
 275 PortMatrixRowLabels::queue_draw_for (ARDOUR::BundleChannel const & bc)
 276 {
 277         if (bc.bundle) {
 278
 279                 if (_matrix->show_only_bundles()) {
 280                         _body->queue_draw_area (
 281                                 component_to_parent_x (bundle_name_x()) - 1,
 282                                 component_to_parent_y (channel_y (bc)) - 1,
 283                                 _longest_bundle_name + name_pad() * 2 + 2,
 284                                 grid_spacing() + 2
 285                                 );
 286                 } else {
 287                         _body->queue_draw_area (
 288                                 component_to_parent_x (port_name_x()) - 1,
 289                                 component_to_parent_y (channel_y (bc)) - 1,
 290                                 _longest_port_name + name_pad() * 2 + 2,
 291                                 grid_spacing() + 2
 292                                 );
 293                 }
 294         }
 295
 296 }
 297
 298 void
 299 PortMatrixRowLabels::mouseover_changed (list<PortMatrixNode> const &)
 300 {
 301         list<PortMatrixNode> const m = _body->mouseover ();
 302         for (list<PortMatrixNode>::const_iterator i = m.begin(); i != m.end(); ++i) {
 303
 304                 ARDOUR::BundleChannel c = i->column;
 305                 ARDOUR::BundleChannel r = i->row;
 306
 307                 if (c.bundle && r.bundle) {
 308                         add_channel_highlight (r);
 309                 } else if (r.bundle) {
 310                         _body->highlight_associated_channels (_matrix->row_index(), r);
 311                 }
 312         }
 313 }
 314
 315 void
 316 PortMatrixRowLabels::motion (double x, double y)
 317 {
 318         ARDOUR::BundleChannel const w = position_to_channel (y, x, _matrix->visible_rows());
 319
 320         uint32_t const bw = _longest_bundle_name + 2 * name_pad();
 321
 322         bool done = false;
 323
 324         if (w.bundle) {
 325
 326                 if (
 327                         (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && x < bw) ||
 328                         (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && x > (_width - bw) && x < _width)
 329
 330                         ) {
 331
 332                         /* if the mouse is over a bundle name, highlight all channels in the bundle */
 333
 334                         list<PortMatrixNode> n;
 335
 336                         for (uint32_t i = 0; i < w.bundle->nchannels().n_total(); ++i) {
 337
 338                                 if (!_matrix->should_show (w.bundle->channel_type(i))) {
 339                                         continue;
 340                                 }
 341
 342                                 ARDOUR::BundleChannel const bc (w.bundle, i);
 343                                 n.push_back (PortMatrixNode (bc, ARDOUR::BundleChannel ()));
 344                         }
 345
 346                         _body->set_mouseover (n);
 347                         done = true;
 348
 349                 } else if (x < _width) {
 350
 351                         _body->set_mouseover (PortMatrixNode (w, ARDOUR::BundleChannel ()));
 352                         done = true;
 353
 354                 }
 355
 356         }
 357
 358         if (!done) {
 359                 /* not over any bundle */
 360                 _body->set_mouseover (PortMatrixNode ());
 361                 return;
 362         }
 363 }