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         _height = 0;
  48         _highest_group_name = 0;
  49
  50         for (PortGroupList::List::const_iterator i = _matrix->rows()->begin(); i != _matrix->rows()->end(); ++i) {
  51
  52                 PortGroup::BundleList const r = (*i)->bundles ();
  53                 for (PortGroup::BundleList::const_iterator j = r.begin(); j != r.end(); ++j) {
  54
  55                         for (uint32_t k = 0; k < j->bundle->nchannels(); ++k) {
  56                                 cairo_text_extents_t ext;
  57                                 cairo_text_extents (cr, j->bundle->channel_name(k).c_str(), &ext);
  58                                 if (ext.width > _longest_port_name) {
  59                                         _longest_port_name = ext.width;
  60                                 }
  61                         }
  62
  63                         cairo_text_extents_t ext;
  64                         cairo_text_extents (cr, j->bundle->name().c_str(), &ext);
  65                         if (ext.width > _longest_bundle_name) {
  66                                 _longest_bundle_name = ext.width;
  67                         }
  68                 }
  69
  70                 _height += group_size (*i) * grid_spacing ();
  71
  72                 cairo_text_extents_t ext;
  73                 cairo_text_extents (cr, (*i)->name.c_str(), &ext);
  74                 if (ext.height > _highest_group_name) {
  75                         _highest_group_name = ext.height;
  76                 }
  77         }
  78
  79         cairo_destroy (cr);
  80         gdk_pixmap_unref (pm);
  81
  82         _width = _highest_group_name +
  83                 _longest_bundle_name +
  84                 name_pad() * 4;
  85
  86         if (!_matrix->show_only_bundles()) {
  87                 _width += _longest_port_name;
  88                 _width += name_pad() * 2;
  89         }
  90 }
  91
  92
  93 void
  94 PortMatrixRowLabels::render (cairo_t* cr)
  95 {
  96         /* BACKGROUND */
  97
  98         set_source_rgb (cr, background_colour());
  99         cairo_rectangle (cr, 0, 0, _width, _height);
 100         cairo_fill (cr);
 101
 102         /* BUNDLE AND PORT NAMES */
 103
 104         double y = 0;
 105         int N = 0;
 106         int M = 0;
 107         for (PortGroupList::List::const_iterator i = _matrix->rows()->begin(); i != _matrix->rows()->end(); ++i) {
 108
 109                 if ((*i)->visible ()) {
 110
 111                         PortGroup::BundleList const & bundles = (*i)->bundles ();
 112                         for (PortGroup::BundleList::const_iterator j = bundles.begin(); j != bundles.end(); ++j) {
 113                                 render_bundle_name (cr, background_colour (), j->has_colour ? j->colour : get_a_bundle_colour (N), 0, y, j->bundle);
 114
 115                                 if (!_matrix->show_only_bundles()) {
 116                                         for (uint32_t k = 0; k < j->bundle->nchannels(); ++k) {
 117                                                 Gdk::Color c = j->has_colour ? j->colour : get_a_bundle_colour (M);
 118                                                 render_channel_name (cr, background_colour (), c, 0, y, ARDOUR::BundleChannel (j->bundle, k));
 119                                                 y += grid_spacing();
 120                                                 ++M;
 121                                         }
 122                                 } else {
 123                                         y += grid_spacing();
 124                                 }
 125
 126                                 ++N;
 127                         }
 128
 129                 } else {
 130
 131                         y += grid_spacing ();
 132                 }
 133         }
 134 }
 135
 136 void
 137 PortMatrixRowLabels::button_press (double x, double y, int b, uint32_t t)
 138 {
 139         uint32_t const gw = (_highest_group_name + 2 * name_pad());
 140
 141         pair<boost::shared_ptr<PortGroup>, ARDOUR::BundleChannel> w = position_to_group_and_channel (y / grid_spacing (), _matrix->rows());
 142
 143         if (
 144                 (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && x < gw) ||
 145                 (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && x > (_width - gw))
 146                 ) {
 147
 148                 w.second.bundle.reset ();
 149         }
 150
 151         if (b == 1) {
 152
 153                 if (w.second.bundle) {
 154                         _body->highlight_associated_channels (_matrix->row_index(), w.second);
 155                 } else {
 156                         if (w.first) {
 157                                 w.first->set_visible (!w.first->visible());
 158                         }
 159                 }
 160
 161         } else if (b == 3) {
 162
 163                 _matrix->popup_menu (
 164                         make_pair (boost::shared_ptr<PortGroup> (), ARDOUR::BundleChannel ()),
 165                         w,
 166                         t
 167                         );
 168         }
 169 }
 170
 171 double
 172 PortMatrixRowLabels::component_to_parent_x (double x) const
 173 {
 174         /* Row labels don't scroll horizontally, so x conversion does not depend on xoffset */
 175         return x + _parent_rectangle.get_x();
 176 }
 177
 178 double
 179 PortMatrixRowLabels::parent_to_component_x (double x) const
 180 {
 181         /* Row labels don't scroll horizontally, so x conversion does not depend on xoffset */
 182         return x - _parent_rectangle.get_x();
 183 }
 184
 185 double
 186 PortMatrixRowLabels::component_to_parent_y (double y) const
 187 {
 188         return y - _body->yoffset() + _parent_rectangle.get_y();
 189 }
 190
 191 double
 192 PortMatrixRowLabels::parent_to_component_y (double y) const
 193 {
 194         return y + _body->yoffset() - _parent_rectangle.get_y();
 195 }
 196
 197
 198 double
 199 PortMatrixRowLabels::bundle_name_x () const
 200 {
 201         double x = 0;
 202
 203         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 204                 x = _highest_group_name + 2 * name_pad();
 205         } else {
 206                 if (_matrix->show_only_bundles()) {
 207                         x = 0;
 208                 } else {
 209                         x = _longest_port_name + name_pad() * 2;
 210                 }
 211         }
 212
 213         return x;
 214 }
 215
 216 double
 217 PortMatrixRowLabels::port_name_x () const
 218 {
 219         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 220                 return _longest_bundle_name + _highest_group_name + name_pad() * 4;
 221         } else {
 222                 return 0;
 223         }
 224
 225         return 0;
 226 }
 227
 228 void
 229 PortMatrixRowLabels::render_bundle_name (
 230         cairo_t* cr, Gdk::Color fg_colour, Gdk::Color bg_colour, double xoff, double yoff, boost::shared_ptr<ARDOUR::Bundle> b
 231         )
 232 {
 233         double const x = bundle_name_x ();
 234
 235         int const n = _matrix->show_only_bundles() ? 1 : b->nchannels();
 236         set_source_rgb (cr, bg_colour);
 237         cairo_rectangle (cr, xoff + x, yoff, _longest_bundle_name + name_pad() * 2, grid_spacing() * n);
 238         cairo_fill_preserve (cr);
 239         set_source_rgb (cr, fg_colour);
 240         cairo_set_line_width (cr, label_border_width ());
 241         cairo_stroke (cr);
 242
 243         cairo_text_extents_t ext;
 244         cairo_text_extents (cr, b->name().c_str(), &ext);
 245         double const off = (grid_spacing() - ext.height) / 2;
 246
 247         set_source_rgb (cr, text_colour());
 248         cairo_move_to (cr, xoff + x + name_pad(), yoff + name_pad() + off);
 249         cairo_show_text (cr, b->name().c_str());
 250 }
 251
 252 void
 253 PortMatrixRowLabels::render_channel_name (
 254         cairo_t* cr, Gdk::Color fg_colour, Gdk::Color bg_colour, double xoff, double yoff, ARDOUR::BundleChannel const& bc
 255         )
 256 {
 257         set_source_rgb (cr, bg_colour);
 258         cairo_rectangle (cr, port_name_x() + xoff, yoff, _longest_port_name + name_pad() * 2, grid_spacing());
 259         cairo_fill_preserve (cr);
 260         set_source_rgb (cr, fg_colour);
 261         cairo_set_line_width (cr, label_border_width ());
 262         cairo_stroke (cr);
 263
 264         cairo_text_extents_t ext;
 265         cairo_text_extents (cr, bc.bundle->channel_name(bc.channel).c_str(), &ext);
 266         double const off = (grid_spacing() - ext.height) / 2;
 267
 268         if (bc.bundle->nchannels() > 1) {
 269
 270                 /* only plot the name if the bundle has more than one channel;
 271                    the name of a single channel is assumed to be redundant */
 272
 273                 set_source_rgb (cr, text_colour());
 274                 cairo_move_to (cr, port_name_x() + xoff + name_pad(), yoff + name_pad() + off);
 275                 cairo_show_text (cr, bc.bundle->channel_name(bc.channel).c_str());
 276         }
 277 }
 278
 279 double
 280 PortMatrixRowLabels::channel_x (ARDOUR::BundleChannel const &) const
 281 {
 282         return 0;
 283 }
 284
 285 double
 286 PortMatrixRowLabels::channel_y (ARDOUR::BundleChannel const& bc) const
 287 {
 288         return channel_to_position (bc, _matrix->rows()) * grid_spacing ();
 289 }
 290
 291 void
 292 PortMatrixRowLabels::queue_draw_for (ARDOUR::BundleChannel const & bc)
 293 {
 294         if (bc.bundle) {
 295
 296                 if (_matrix->show_only_bundles()) {
 297                         _body->queue_draw_area (
 298                                 component_to_parent_x (bundle_name_x()) - 1,
 299                                 component_to_parent_y (channel_y (bc)) - 1,
 300                                 _longest_bundle_name + name_pad() * 2 + 2,
 301                                 grid_spacing() + 2
 302                                 );
 303                 } else {
 304                         _body->queue_draw_area (
 305                                 component_to_parent_x (port_name_x()) - 1,
 306                                 component_to_parent_y (channel_y (bc)) - 1,
 307                                 _longest_port_name + name_pad() * 2 + 2,
 308                                 grid_spacing() + 2
 309                                 );
 310                 }
 311         }
 312
 313 }
 314
 315 void
 316 PortMatrixRowLabels::mouseover_changed (PortMatrixNode const &)
 317 {
 318         clear_channel_highlights ();
 319         if (_body->mouseover().column.bundle && _body->mouseover().row.bundle) {
 320                 add_channel_highlight (_body->mouseover().row);
 321         }
 322 }
 323
 324 void
 325 PortMatrixRowLabels::draw_extra (cairo_t* cr)
 326 {
 327         PortMatrixLabels::draw_extra (cr);
 328
 329         /* PORT GROUP NAMES */
 330
 331         double x = 0;
 332         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 333                 x = component_to_parent_x (0);
 334         } else {
 335                 x = component_to_parent_x (_width - _highest_group_name - 2 * name_pad());
 336         }
 337
 338         double y = component_to_parent_y (0);
 339         int g = 0;
 340         for (PortGroupList::List::const_iterator i = _matrix->rows()->begin(); i != _matrix->rows()->end(); ++i) {
 341
 342                 /* compute height of this group */
 343                 double h = 0;
 344                 if (!(*i)->visible()) {
 345                         h = grid_spacing ();
 346                 } else {
 347                         if (_matrix->show_only_bundles()) {
 348                                 h = (*i)->bundles().size() * grid_spacing();
 349                         } else {
 350                                 h = (*i)->total_channels () * grid_spacing();
 351                         }
 352                 }
 353
 354                 if (h == 0) {
 355                         continue;
 356                 }
 357
 358                 /* rectangle */
 359                 set_source_rgb (cr, get_a_group_colour (g));
 360                 double const rw = _highest_group_name + 2 * name_pad();
 361                 cairo_rectangle (cr, x, y, rw, h);
 362                 cairo_fill (cr);
 363
 364                 /* y area available to draw the label in (trying to keep it visible) */
 365                 double const ty = max (y, 0.0);
 366                 double const by = min (y + h, double (_body->alloc_scroll_height ()));
 367
 368                 /* hence what abbreviation (or not) we need for the group name */
 369                 string const upper = Glib::ustring ((*i)->name).uppercase ();
 370                 pair<string, double> display = fit_to_pixels (cr, upper, by - ty);
 371
 372                 /* plot it */
 373                 set_source_rgb (cr, text_colour());
 374                 cairo_move_to (cr, x + rw - name_pad(), (by + ty + display.second) / 2);
 375                 cairo_save (cr);
 376                 cairo_rotate (cr, - M_PI / 2);
 377                 cairo_show_text (cr, display.first.c_str());
 378                 cairo_restore (cr);
 379
 380                 y += h;
 381                 ++g;
 382         }
 383 }