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
  29 PortMatrixRowLabels::PortMatrixRowLabels (PortMatrix* m, PortMatrixBody* b)
  30         : PortMatrixLabels (m, b)
  31 {
  32
  33 }
  34
  35 void
  36 PortMatrixRowLabels::compute_dimensions ()
  37 {
  38         GdkPixmap* pm = gdk_pixmap_new (NULL, 1, 1, 24);
  39         gdk_drawable_set_colormap (pm, gdk_colormap_get_system());
  40         cairo_t* cr = gdk_cairo_create (pm);
  41
  42         _longest_port_name = 0;
  43         _longest_bundle_name = 0;
  44         _height = 0;
  45         ARDOUR::BundleList const r = _matrix->rows()->bundles();
  46         for (ARDOUR::BundleList::const_iterator i = r.begin(); i != r.end(); ++i) {
  47                 for (uint32_t j = 0; j < (*i)->nchannels(); ++j) {
  48                         cairo_text_extents_t ext;
  49                         cairo_text_extents (cr, (*i)->channel_name(j).c_str(), &ext);
  50                         if (ext.width > _longest_port_name) {
  51                                 _longest_port_name = ext.width;
  52                         }
  53                 }
  54
  55                 cairo_text_extents_t ext;
  56                 cairo_text_extents (cr, (*i)->name().c_str(), &ext);
  57                 if (ext.width > _longest_bundle_name) {
  58                         _longest_bundle_name = ext.width;
  59                 }
  60
  61                 _height += (*i)->nchannels() * row_height();
  62         }
  63
  64         _highest_group_name = 0;
  65         for (PortGroupList::List::const_iterator i = _matrix->rows()->begin(); i != _matrix->rows()->end(); ++i) {
  66                 if ((*i)->visible()) {
  67                         cairo_text_extents_t ext;
  68                         cairo_text_extents (cr, (*i)->name.c_str(), &ext);
  69                         if (ext.height > _highest_group_name) {
  70                                 _highest_group_name = ext.height;
  71                         }
  72                 }
  73         }
  74
  75         cairo_destroy (cr);
  76         gdk_pixmap_unref (pm);
  77
  78         _width = _highest_group_name +
  79                 _longest_port_name +
  80                 _longest_bundle_name +
  81                 name_pad() * 6;
  82 }
  83
  84
  85 void
  86 PortMatrixRowLabels::render (cairo_t* cr)
  87 {
  88         /* BACKGROUND */
  89
  90         set_source_rgb (cr, background_colour());
  91         cairo_rectangle (cr, 0, 0, _width, _height);
  92         cairo_fill (cr);
  93
  94         /* PORT GROUP NAMES */
  95
  96         double x = 0;
  97         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
  98                 x = 0;
  99         } else {
 100                 x = _width - _highest_group_name - 2 * name_pad();
 101         }
 102
 103         double y = 0;
 104         int g = 0;
 105         for (PortGroupList::List::const_iterator i = _matrix->rows()->begin(); i != _matrix->rows()->end(); ++i) {
 106
 107                 if (!(*i)->visible() || ((*i)->bundles().empty() && (*i)->ports.empty()) ) {
 108                         continue;
 109                 }
 110
 111                 /* compute height of this group */
 112                 double h = 0;
 113                 for (ARDOUR::BundleList::const_iterator j = (*i)->bundles().begin(); j != (*i)->bundles().end(); ++j) {
 114                         h += (*j)->nchannels() * row_height();
 115                 }
 116                 h += (*i)->ports.size() * row_height();
 117
 118                 /* rectangle */
 119                 set_source_rgb (cr, get_a_group_colour (g));
 120                 double const rw = _highest_group_name + 2 * name_pad();
 121                 cairo_rectangle (cr, x, y, rw, h);
 122                 cairo_fill (cr);
 123
 124                 /* hence what abbreviation (or not) we need for the group name */
 125                 std::pair<std::string, double> display = display_port_name (cr, (*i)->name, h);
 126
 127                 /* plot it */
 128                 set_source_rgb (cr, text_colour());
 129                 cairo_move_to (cr, x + rw - name_pad(), y + (h + display.second) / 2);
 130                 cairo_save (cr);
 131                 cairo_rotate (cr, - M_PI / 2);
 132                 cairo_show_text (cr, display.first.c_str());
 133                 cairo_restore (cr);
 134
 135                 y += h;
 136                 ++g;
 137         }
 138
 139         /* BUNDLE NAMES */
 140
 141         x = 0;
 142         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 143                 x = _highest_group_name + 2 * name_pad();
 144         } else {
 145                 x = _longest_port_name + name_pad() * 2;
 146         }
 147
 148         y = 0;
 149         ARDOUR::BundleList const r = _matrix->rows()->bundles();
 150         for (ARDOUR::BundleList::const_iterator i = r.begin(); i != r.end(); ++i) {
 151
 152                 Gdk::Color const colour = get_a_bundle_colour (i - r.begin ());
 153                 set_source_rgb (cr, colour);
 154                 cairo_rectangle (cr, x, y, _longest_bundle_name + name_pad() * 2, row_height() * (*i)->nchannels());
 155                 cairo_fill_preserve (cr);
 156                 set_source_rgb (cr, background_colour());
 157                 cairo_set_line_width (cr, label_border_width ());
 158                 cairo_stroke (cr);
 159
 160                 double off = 0;
 161                 if ((*i)->nchannels () > 0) {
 162                         /* use the extent of our first channel name so that the bundle name is vertically aligned with it */
 163                         cairo_text_extents_t ext;
 164                         cairo_text_extents (cr, (*i)->channel_name(0).c_str(), &ext);
 165                         off = (row_height() - ext.height) / 2;
 166                 } else {
 167                         off = row_height() / 2;
 168                 }
 169
 170                 set_source_rgb (cr, text_colour());
 171                 cairo_move_to (cr, x + name_pad(), y + name_pad() + off);
 172                 cairo_show_text (cr, (*i)->name().c_str());
 173
 174                 y += row_height() * (*i)->nchannels ();
 175         }
 176
 177
 178         /* PORT NAMES */
 179
 180         y = 0;
 181         for (ARDOUR::BundleList::const_iterator i = r.begin(); i != r.end(); ++i) {
 182                 for (uint32_t j = 0; j < (*i)->nchannels(); ++j) {
 183                         render_channel_name (cr, get_a_bundle_colour (i - r.begin()), 0, y, ARDOUR::BundleChannel (*i, j));
 184                         y += row_height();
 185                 }
 186         }
 187 }
 188
 189 void
 190 PortMatrixRowLabels::button_press (double x, double y, int b, uint32_t t)
 191 {
 192         switch (b) {
 193         case 1:
 194                 _body->highlight_associated_channels (_matrix->row_index(), y / row_height ());
 195                 break;
 196         case 3:
 197                 maybe_popup_context_menu (x, y, t);
 198                 break;
 199         }
 200 }
 201
 202 void
 203 PortMatrixRowLabels::maybe_popup_context_menu (double x, double y, uint32_t t)
 204 {
 205         if (!_matrix->can_rename_channels (_matrix->row_index()) &&
 206             !_matrix->can_remove_channels (_matrix->row_index())) {
 207                 return;
 208         }
 209
 210         if ( (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && x > (_longest_bundle_name + name_pad() * 2)) ||
 211              (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && x < (_longest_port_name + name_pad() * 2))
 212                 ) {
 213
 214                 _matrix->popup_channel_context_menu (_matrix->row_index(), y / row_height(), t);
 215
 216         }
 217 }
 218
 219 double
 220 PortMatrixRowLabels::component_to_parent_x (double x) const
 221 {
 222         return x + _parent_rectangle.get_x();
 223 }
 224
 225 double
 226 PortMatrixRowLabels::parent_to_component_x (double x) const
 227 {
 228         return x - _parent_rectangle.get_x();
 229 }
 230
 231 double
 232 PortMatrixRowLabels::component_to_parent_y (double y) const
 233 {
 234         return y - _body->yoffset() + _parent_rectangle.get_y();
 235 }
 236
 237 double
 238 PortMatrixRowLabels::parent_to_component_y (double y) const
 239 {
 240         return y + _body->yoffset() - _parent_rectangle.get_y();
 241 }
 242
 243 double
 244 PortMatrixRowLabels::port_name_x () const
 245 {
 246         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 247                 return _longest_bundle_name + _highest_group_name + name_pad() * 4;
 248         } else {
 249                 return 0;
 250         }
 251
 252         return 0;
 253 }
 254
 255 void
 256 PortMatrixRowLabels::render_channel_name (
 257         cairo_t* cr, Gdk::Color colour, double xoff, double yoff, ARDOUR::BundleChannel const& bc
 258         )
 259 {
 260         set_source_rgb (cr, colour);
 261         cairo_rectangle (cr, port_name_x() + xoff, yoff, _longest_port_name + name_pad() * 2, row_height());
 262         cairo_fill_preserve (cr);
 263         set_source_rgb (cr, background_colour());
 264         cairo_set_line_width (cr, label_border_width ());
 265         cairo_stroke (cr);
 266
 267         cairo_text_extents_t ext;
 268         cairo_text_extents (cr, bc.bundle->channel_name(bc.channel).c_str(), &ext);
 269         double const off = (row_height() - ext.height) / 2;
 270
 271         set_source_rgb (cr, text_colour());
 272         cairo_move_to (cr, port_name_x() + xoff + name_pad(), yoff + name_pad() + off);
 273         cairo_show_text (cr, bc.bundle->channel_name(bc.channel).c_str());
 274 }
 275
 276 double
 277 PortMatrixRowLabels::channel_x (ARDOUR::BundleChannel const& bc) const
 278 {
 279         return 0;
 280 }
 281
 282 double
 283 PortMatrixRowLabels::channel_y (ARDOUR::BundleChannel const& bc) const
 284 {
 285         uint32_t n = 0;
 286
 287         ARDOUR::BundleList::const_iterator i = _matrix->rows()->bundles().begin();
 288         while (i != _matrix->rows()->bundles().end() && *i != bc.bundle) {
 289                 n += (*i)->nchannels ();
 290                 ++i;
 291         }
 292
 293         n += bc.channel;
 294         return n * row_height();
 295 }
 296
 297 void
 298 PortMatrixRowLabels::queue_draw_for (ARDOUR::BundleChannel const & bc)
 299 {
 300         if (bc.bundle) {
 301
 302                 _body->queue_draw_area (
 303                         component_to_parent_x (port_name_x()),
 304                         component_to_parent_y (channel_y (bc)),
 305                         _longest_port_name + name_pad() * 2,
 306                         row_height()
 307                         );
 308         }
 309
 310 }
 311
 312 void
 313 PortMatrixRowLabels::mouseover_changed (PortMatrixNode const &)
 314 {
 315         clear_channel_highlights ();
 316         if (_body->mouseover().row.bundle) {
 317                 add_channel_highlight (_body->mouseover().row);
 318         }
 319 }