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(); ++k) {
  58                                 cairo_text_extents_t ext;
  59                                 cairo_text_extents (cr, (*j)->bundle->channel_name(k).c_str(), &ext);
  60                                 if (ext.width > _longest_port_name) {
  61                                         _longest_port_name = ext.width;
  62                                 }
  63                         }
  64
  65                         cairo_text_extents_t ext;
  66                         cairo_text_extents (cr, (*j)->bundle->name().c_str(), &ext);
  67                         if (ext.width > _longest_bundle_name) {
  68                                 _longest_bundle_name = ext.width;
  69                         }
  70                 }
  71         }
  72
  73
  74         if (_matrix->visible_rows()) {
  75                 _height = group_size (_matrix->visible_rows()) * grid_spacing ();
  76         } else {
  77                 _height = 0;
  78         }
  79
  80         cairo_destroy (cr);
  81         gdk_pixmap_unref (pm);
  82
  83         _width = _longest_bundle_name +
  84                 name_pad() * 2;
  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
 108         PortGroup::BundleList const & bundles = _matrix->visible_rows()->bundles ();
 109         for (PortGroup::BundleList::const_iterator i = bundles.begin(); i != bundles.end(); ++i) {
 110                 render_bundle_name (cr, background_colour (), (*i)->has_colour ? (*i)->colour : get_a_bundle_colour (N), 0, y, (*i)->bundle);
 111
 112                 if (!_matrix->show_only_bundles()) {
 113                         for (uint32_t j = 0; j < (*i)->bundle->nchannels(); ++j) {
 114                                 Gdk::Color c = (*i)->has_colour ? (*i)->colour : get_a_bundle_colour (M);
 115                                 render_channel_name (cr, background_colour (), c, 0, y, ARDOUR::BundleChannel ((*i)->bundle, j));
 116                                 y += grid_spacing();
 117                                 ++M;
 118                         }
 119                 } else {
 120                         y += grid_spacing();
 121                 }
 122
 123                 ++N;
 124         }
 125 }
 126
 127 void
 128 PortMatrixRowLabels::button_press (double x, double y, int b, uint32_t t, guint)
 129 {
 130         ARDOUR::BundleChannel w = position_to_channel (y, x, _matrix->visible_rows());
 131
 132         if (
 133                 (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && x > (_longest_port_name + name_pad() * 2)) ||
 134                 (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && x < (_longest_bundle_name + name_pad() * 2))
 135
 136                 ) {
 137                         w.channel = -1;
 138         }
 139
 140         if (b == 3) {
 141
 142                 _matrix->popup_menu (
 143                         ARDOUR::BundleChannel (),
 144                         w,
 145                         t
 146                         );
 147         }
 148 }
 149
 150 double
 151 PortMatrixRowLabels::component_to_parent_x (double x) const
 152 {
 153         /* Row labels don't scroll horizontally, so x conversion does not depend on xoffset */
 154         return x + _parent_rectangle.get_x();
 155 }
 156
 157 double
 158 PortMatrixRowLabels::parent_to_component_x (double x) const
 159 {
 160         /* Row labels don't scroll horizontally, so x conversion does not depend on xoffset */
 161         return x - _parent_rectangle.get_x();
 162 }
 163
 164 double
 165 PortMatrixRowLabels::component_to_parent_y (double y) const
 166 {
 167         return y - _body->yoffset() + _parent_rectangle.get_y();
 168 }
 169
 170 double
 171 PortMatrixRowLabels::parent_to_component_y (double y) const
 172 {
 173         return y + _body->yoffset() - _parent_rectangle.get_y();
 174 }
 175
 176
 177 double
 178 PortMatrixRowLabels::bundle_name_x () const
 179 {
 180         double x = 0;
 181
 182         if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && !_matrix->show_only_bundles ()) {
 183                 x = _longest_port_name + name_pad() * 2;
 184         }
 185
 186         return x;
 187 }
 188
 189 double
 190 PortMatrixRowLabels::port_name_x () const
 191 {
 192         if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
 193                 return _longest_bundle_name + name_pad() * 2;
 194         } else {
 195                 return 0;
 196         }
 197
 198         return 0;
 199 }
 200
 201 void
 202 PortMatrixRowLabels::render_bundle_name (
 203         cairo_t* cr, Gdk::Color fg_colour, Gdk::Color bg_colour, double xoff, double yoff, boost::shared_ptr<ARDOUR::Bundle> b
 204         )
 205 {
 206         double const x = bundle_name_x ();
 207
 208         int const n = _matrix->show_only_bundles() ? 1 : b->nchannels();
 209         set_source_rgb (cr, bg_colour);
 210         cairo_rectangle (cr, xoff + x, yoff, _longest_bundle_name + name_pad() * 2, grid_spacing() * n);
 211         cairo_fill_preserve (cr);
 212         set_source_rgb (cr, fg_colour);
 213         cairo_set_line_width (cr, label_border_width ());
 214         cairo_stroke (cr);
 215
 216         cairo_text_extents_t ext;
 217         cairo_text_extents (cr, b->name().c_str(), &ext);
 218         double const off = (grid_spacing() - ext.height) / 2;
 219
 220         set_source_rgb (cr, text_colour());
 221         cairo_move_to (cr, xoff + x + name_pad(), yoff + name_pad() + off);
 222         cairo_show_text (cr, b->name().c_str());
 223 }
 224
 225 void
 226 PortMatrixRowLabels::render_channel_name (
 227         cairo_t* cr, Gdk::Color fg_colour, Gdk::Color bg_colour, double xoff, double yoff, ARDOUR::BundleChannel const& bc
 228         )
 229 {
 230         set_source_rgb (cr, bg_colour);
 231         cairo_rectangle (cr, port_name_x() + xoff, yoff, _longest_port_name + name_pad() * 2, grid_spacing());
 232         cairo_fill_preserve (cr);
 233         set_source_rgb (cr, fg_colour);
 234         cairo_set_line_width (cr, label_border_width ());
 235         cairo_stroke (cr);
 236
 237         cairo_text_extents_t ext;
 238         cairo_text_extents (cr, bc.bundle->channel_name(bc.channel).c_str(), &ext);
 239         double const off = (grid_spacing() - ext.height) / 2;
 240
 241         if (bc.bundle->nchannels() > 1) {
 242
 243                 /* only plot the name if the bundle has more than one channel;
 244                    the name of a single channel is assumed to be redundant */
 245
 246                 set_source_rgb (cr, text_colour());
 247                 cairo_move_to (cr, port_name_x() + xoff + name_pad(), yoff + name_pad() + off);
 248                 cairo_show_text (cr, bc.bundle->channel_name(bc.channel).c_str());
 249         }
 250 }
 251
 252 double
 253 PortMatrixRowLabels::channel_x (ARDOUR::BundleChannel const &) const
 254 {
 255         return 0;
 256 }
 257
 258 double
 259 PortMatrixRowLabels::channel_y (ARDOUR::BundleChannel const& bc) const
 260 {
 261         return channel_to_position (bc, _matrix->visible_rows()) * grid_spacing ();
 262 }
 263
 264 void
 265 PortMatrixRowLabels::queue_draw_for (ARDOUR::BundleChannel const & bc)
 266 {
 267         if (bc.bundle) {
 268
 269                 if (_matrix->show_only_bundles()) {
 270                         _body->queue_draw_area (
 271                                 component_to_parent_x (bundle_name_x()) - 1,
 272                                 component_to_parent_y (channel_y (bc)) - 1,
 273                                 _longest_bundle_name + name_pad() * 2 + 2,
 274                                 grid_spacing() + 2
 275                                 );
 276                 } else {
 277                         _body->queue_draw_area (
 278                                 component_to_parent_x (port_name_x()) - 1,
 279                                 component_to_parent_y (channel_y (bc)) - 1,
 280                                 _longest_port_name + name_pad() * 2 + 2,
 281                                 grid_spacing() + 2
 282                                 );
 283                 }
 284         }
 285
 286 }
 287
 288 void
 289 PortMatrixRowLabels::mouseover_changed (list<PortMatrixNode> const &)
 290 {
 291         list<PortMatrixNode> const m = _body->mouseover ();
 292         for (list<PortMatrixNode>::const_iterator i = m.begin(); i != m.end(); ++i) {
 293
 294                 ARDOUR::BundleChannel c = i->column;
 295                 ARDOUR::BundleChannel r = i->row;
 296
 297                 if (c.bundle && r.bundle) {
 298                         add_channel_highlight (r);
 299                 } else if (r.bundle) {
 300                         _body->highlight_associated_channels (_matrix->row_index(), r);
 301                 }
 302         }
 303 }
 304
 305 void
 306 PortMatrixRowLabels::motion (double x, double y)
 307 {
 308         ARDOUR::BundleChannel const w = position_to_channel (y, x, _matrix->visible_rows());
 309
 310         uint32_t const bw = _longest_bundle_name + 2 * name_pad();
 311
 312         bool done = false;
 313
 314         if (w.bundle) {
 315
 316                 if (
 317                         (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && x < bw) ||
 318                         (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && x > (_width - bw) && x < _width)
 319
 320                         ) {
 321
 322                         /* if the mouse is over a bundle name, highlight all channels in the bundle */
 323
 324                         list<PortMatrixNode> n;
 325
 326                         for (uint32_t i = 0; i < w.bundle->nchannels(); ++i) {
 327                                 ARDOUR::BundleChannel const bc (w.bundle, i);
 328                                 n.push_back (PortMatrixNode (bc, ARDOUR::BundleChannel ()));
 329                         }
 330
 331                         _body->set_mouseover (n);
 332                         done = true;
 333
 334                 } else if (x < _width) {
 335
 336                         _body->set_mouseover (PortMatrixNode (w, ARDOUR::BundleChannel ()));
 337                         done = true;
 338
 339                 }
 340
 341         }
 342
 343         if (!done) {
 344                 /* not over any bundle */
 345                 _body->set_mouseover (PortMatrixNode ());
 346                 return;
 347         }
 348 }