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 "i18n.h"
  27
  28 PortMatrixRowLabels::PortMatrixRowLabels (PortMatrix* m, PortMatrixBody* b)
  29         : PortMatrixComponent (m, b)
  30 {
  31
  32 }
  33
  34 void
  35 PortMatrixRowLabels::compute_dimensions ()
  36 {
  37         GdkPixmap* pm = gdk_pixmap_new (NULL, 1, 1, 24);
  38         gdk_drawable_set_colormap (pm, gdk_colormap_get_system());
  39         cairo_t* cr = gdk_cairo_create (pm);
  40
  41         _longest_port_name = 0;
  42         _longest_bundle_name = 0;
  43         _height = 0;
  44         ARDOUR::BundleList const r = _matrix->rows()->bundles();
  45         for (ARDOUR::BundleList::const_iterator i = r.begin(); i != r.end(); ++i) {
  46                 for (uint32_t j = 0; j < (*i)->nchannels(); ++j) {
  47                         cairo_text_extents_t ext;
  48                         cairo_text_extents (cr, (*i)->channel_name(j).c_str(), &ext);
  49                         if (ext.width > _longest_port_name) {
  50                                 _longest_port_name = ext.width;
  51                         }
  52                 }
  53
  54                 cairo_text_extents_t ext;
  55                 cairo_text_extents (cr, (*i)->name().c_str(), &ext);
  56                 if (ext.width > _longest_bundle_name) {
  57                         _longest_bundle_name = ext.width;
  58                 }
  59
  60                 _height += (*i)->nchannels() * row_height();
  61         }
  62
  63         _highest_group_name = 0;
  64         for (PortGroupList::List::const_iterator i = _matrix->rows()->begin(); i != _matrix->rows()->end(); ++i) {
  65                 if ((*i)->visible()) {
  66                         cairo_text_extents_t ext;
  67                         cairo_text_extents (cr, (*i)->name.c_str(), &ext);
  68                         if (ext.height > _highest_group_name) {
  69                                 _highest_group_name = ext.height;
  70                         }
  71                 }
  72         }
  73
  74         cairo_destroy (cr);
  75         gdk_pixmap_unref (pm);
  76
  77         _width = _highest_group_name +
  78                 _longest_port_name +
  79                 _longest_bundle_name +
  80                 name_pad() * 6;
  81 }
  82
  83
  84 void
  85 PortMatrixRowLabels::render (cairo_t* cr)
  86 {
  87         /* BACKGROUND */
  88
  89         set_source_rgb (cr, background_colour());
  90         cairo_rectangle (cr, 0, 0, _width, _height);
  91         cairo_fill (cr);
  92
  93         /* PORT GROUP NAMES */
  94
  95         double x = 0;
  96         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
  97                 x = 0;
  98         } else {
  99                 x = _width - _highest_group_name - 2 * name_pad();
 100         }
 101
 102         double y = 0;
 103         int g = 0;
 104         for (PortGroupList::List::const_iterator i = _matrix->rows()->begin(); i != _matrix->rows()->end(); ++i) {
 105
 106                 if (!(*i)->visible() || ((*i)->bundles().empty() && (*i)->ports.empty()) ) {
 107                         continue;
 108                 }
 109
 110                 /* compute height of this group */
 111                 double h = 0;
 112                 for (ARDOUR::BundleList::const_iterator j = (*i)->bundles().begin(); j != (*i)->bundles().end(); ++j) {
 113                         h += (*j)->nchannels() * row_height();
 114                 }
 115                 h += (*i)->ports.size() * row_height();
 116
 117                 /* rectangle */
 118                 set_source_rgb (cr, get_a_group_colour (g));
 119                 double const rw = _highest_group_name + 2 * name_pad();
 120                 cairo_rectangle (cr, x, y, rw, h);
 121                 cairo_fill (cr);
 122
 123                 /* hence what abbreviation (or not) we need for the group name */
 124                 std::pair<std::string, double> display = display_port_name (cr, (*i)->name, h);
 125
 126                 /* plot it */
 127                 set_source_rgb (cr, text_colour());
 128                 cairo_move_to (cr, x + rw - name_pad(), y + (h + display.second) / 2);
 129                 cairo_save (cr);
 130                 cairo_rotate (cr, - M_PI / 2);
 131                 cairo_show_text (cr, display.first.c_str());
 132                 cairo_restore (cr);
 133
 134                 y += h;
 135                 ++g;
 136         }
 137
 138         /* BUNDLE NAMES */
 139
 140         x = 0;
 141         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 142                 x = _highest_group_name + 2 * name_pad();
 143         } else {
 144                 x = _longest_port_name + name_pad() * 2;
 145         }
 146
 147         y = 0;
 148         ARDOUR::BundleList const r = _matrix->rows()->bundles();
 149         for (ARDOUR::BundleList::const_iterator i = r.begin(); i != r.end(); ++i) {
 150
 151                 Gdk::Color const colour = get_a_bundle_colour (i - r.begin ());
 152                 set_source_rgb (cr, colour);
 153                 cairo_rectangle (cr, x, y, _longest_bundle_name + name_pad() * 2, row_height() * (*i)->nchannels());
 154                 cairo_fill_preserve (cr);
 155                 set_source_rgb (cr, background_colour());
 156                 cairo_set_line_width (cr, label_border_width ());
 157                 cairo_stroke (cr);
 158
 159                 double off = 0;
 160                 if ((*i)->nchannels () > 0) {
 161                         /* use the extent of our first channel name so that the bundle name is vertically aligned with it */
 162                         cairo_text_extents_t ext;
 163                         cairo_text_extents (cr, (*i)->channel_name(0).c_str(), &ext);
 164                         off = (row_height() - ext.height) / 2;
 165                 } else {
 166                         off = row_height() / 2;
 167                 }
 168
 169                 set_source_rgb (cr, text_colour());
 170                 cairo_move_to (cr, x + name_pad(), y + name_pad() + off);
 171                 cairo_show_text (cr, (*i)->name().c_str());
 172
 173                 y += row_height() * (*i)->nchannels ();
 174         }
 175
 176
 177         /* PORT NAMES */
 178
 179         y = 0;
 180         for (ARDOUR::BundleList::const_iterator i = r.begin(); i != r.end(); ++i) {
 181                 for (uint32_t j = 0; j < (*i)->nchannels(); ++j) {
 182                         render_port_name (cr, get_a_bundle_colour (i - r.begin()), 0, y, ARDOUR::BundleChannel (*i, j));
 183                         y += row_height();
 184                 }
 185         }
 186 }
 187
 188 void
 189 PortMatrixRowLabels::button_press (double x, double y, int b, uint32_t t)
 190 {
 191         if (b != 3) {
 192                 return;
 193         }
 194
 195         if (!_matrix->can_rename_channels (_matrix->row_index()) &&
 196             !_matrix->can_remove_channels (_matrix->row_index())) {
 197                 return;
 198         }
 199
 200         if ( (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && x > (_longest_bundle_name + name_pad() * 2)) ||
 201              (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && x < (_longest_port_name + name_pad() * 2))
 202                 ) {
 203
 204                 _matrix->popup_channel_context_menu (_matrix->row_index(), y / row_height(), t);
 205
 206         }
 207 }
 208
 209 double
 210 PortMatrixRowLabels::component_to_parent_x (double x) const
 211 {
 212         return x + _parent_rectangle.get_x();
 213 }
 214
 215 double
 216 PortMatrixRowLabels::parent_to_component_x (double x) const
 217 {
 218         return x - _parent_rectangle.get_x();
 219 }
 220
 221 double
 222 PortMatrixRowLabels::component_to_parent_y (double y) const
 223 {
 224         return y - _body->yoffset() + _parent_rectangle.get_y();
 225 }
 226
 227 double
 228 PortMatrixRowLabels::parent_to_component_y (double y) const
 229 {
 230         return y + _body->yoffset() - _parent_rectangle.get_y();
 231 }
 232
 233 double
 234 PortMatrixRowLabels::port_name_x () const
 235 {
 236         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 237                 return _longest_bundle_name + _highest_group_name + name_pad() * 4;
 238         } else {
 239                 return 0;
 240         }
 241
 242         return 0;
 243 }
 244
 245 void
 246 PortMatrixRowLabels::render_port_name (
 247         cairo_t* cr, Gdk::Color colour, double xoff, double yoff, ARDOUR::BundleChannel const& bc
 248         )
 249 {
 250         set_source_rgb (cr, colour);
 251         cairo_rectangle (cr, port_name_x() + xoff, yoff, _longest_port_name + name_pad() * 2, row_height());
 252         cairo_fill_preserve (cr);
 253         set_source_rgb (cr, background_colour());
 254         cairo_set_line_width (cr, label_border_width ());
 255         cairo_stroke (cr);
 256
 257         cairo_text_extents_t ext;
 258         cairo_text_extents (cr, bc.bundle->channel_name(bc.channel).c_str(), &ext);
 259         double const off = (row_height() - ext.height) / 2;
 260
 261         set_source_rgb (cr, text_colour());
 262         cairo_move_to (cr, port_name_x() + xoff + name_pad(), yoff + name_pad() + off);
 263         cairo_show_text (cr, bc.bundle->channel_name(bc.channel).c_str());
 264 }
 265
 266 double
 267 PortMatrixRowLabels::channel_y (ARDOUR::BundleChannel const& bc) const
 268 {
 269         uint32_t n = 0;
 270
 271         ARDOUR::BundleList::const_iterator i = _matrix->rows()->bundles().begin();
 272         while (i != _matrix->rows()->bundles().end() && *i != bc.bundle) {
 273                 n += (*i)->nchannels ();
 274                 ++i;
 275         }
 276
 277         n += bc.channel;
 278         return n * row_height();
 279 }
 280
 281 void
 282 PortMatrixRowLabels::queue_draw_for (PortMatrixNode const& n)
 283 {
 284         if (n.row.bundle) {
 285
 286                 _body->queue_draw_area (
 287                         component_to_parent_x (port_name_x()),
 288                         component_to_parent_y (channel_y (n.row)),
 289                         _longest_port_name + name_pad() * 2,
 290                         row_height()
 291                         );
 292         }
 293
 294 }
 295
 296 void
 297 PortMatrixRowLabels::mouseover_changed (PortMatrixNode const& old)
 298 {
 299         queue_draw_for (old);
 300         queue_draw_for (_body->mouseover());
 301 }
 302
 303 void
 304 PortMatrixRowLabels::draw_extra (cairo_t* cr)
 305 {
 306         if (_body->mouseover().row.bundle) {
 307                 render_port_name (
 308                         cr,
 309                         mouseover_port_colour (),
 310                         component_to_parent_x (0),
 311                         component_to_parent_y (channel_y (_body->mouseover().row)),
 312                         _body->mouseover().row
 313                         );
 314         }
 315 }