gtk2_ardour/meter_patterns.cc

   1 /*
   2     Copyright (C) 2013 Paul Davis
   3     Author: Robin Gareus
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <gtkmm2ext/cairo_widget.h>
  21 #include <gtkmm2ext/gtk_ui.h>
  22 #include <gtkmm2ext/utils.h>
  23 #include <gtkmm2ext/rgb_macros.h>
  24
  25 #include <ardour/rc_configuration.h>
  26 #include "ardour_ui.h"
  27 #include "utils.h"
  28 #include "logmeter.h"
  29 #include "meter_patterns.h"
  30
  31 #include "i18n.h"
  32
  33 using namespace ARDOUR;
  34 using namespace PBD;
  35 using namespace Gtk;
  36 using namespace Gtkmm2ext;
  37 using namespace std;
  38 using namespace ArdourMeter;
  39
  40 static const int max_pattern_metric_size = 1026;
  41
  42 /* signals used by meters */
  43
  44 sigc::signal<void> ArdourMeter::ResetAllPeakDisplays;
  45 sigc::signal<void,ARDOUR::Route*> ArdourMeter::ResetRoutePeakDisplays;
  46 sigc::signal<void,ARDOUR::RouteGroup*> ArdourMeter::ResetGroupPeakDisplays;
  47 sigc::signal<void> ArdourMeter::RedrawMetrics;
  48
  49 sigc::signal<void, int, ARDOUR::RouteGroup*, ARDOUR::MeterType> ArdourMeter::SetMeterTypeMulti;
  50
  51
  52 /* pattern cache */
  53
  54 struct MeterMatricsMapKey {
  55         MeterMatricsMapKey (std::string n, MeterType t)
  56                 : _n(n)
  57                 , _t(t)
  58         {}
  59         inline bool operator<(const MeterMatricsMapKey& rhs) const {
  60                 return (_n < rhs._n) || (_n == rhs._n && _t < rhs._t);
  61         }
  62         std::string _n;
  63         MeterType _t;
  64 };
  65
  66 namespace ArdourMeter {
  67         typedef std::map<MeterMatricsMapKey, cairo_pattern_t*> MetricPatternMap;
  68 }
  69
  70 static ArdourMeter::MetricPatternMap ticks_patterns;
  71 static ArdourMeter::MetricPatternMap metric_patterns;
  72
  73
  74 const std::string
  75 ArdourMeter::meter_type_string (ARDOUR::MeterType mt)
  76 {
  77         switch (mt) {
  78                 case MeterPeak:
  79                         return _("Peak");
  80                         break;
  81                 case MeterKrms:
  82                         return _("RMS + Peak");
  83                         break;
  84                 case MeterIEC1DIN:
  85                         return _("IEC1/DIN");
  86                         break;
  87                 case MeterIEC1NOR:
  88                         return _("IEC1/Nordic");
  89                         break;
  90                 case MeterIEC2BBC:
  91                         return _("IEC2/BBC");
  92                         break;
  93                 case MeterIEC2EBU:
  94                         return _("IEC2/EBU");
  95                         break;
  96                 case MeterK20:
  97                         return _("K20");
  98                         break;
  99                 case MeterK14:
 100                         return _("K14");
 101                         break;
 102                 case MeterVU:
 103                         return _("VU");
 104                         break;
 105                 default:
 106                         return _("???");
 107                         break;
 108         }
 109 }
 110
 111 static inline float mtr_col_and_fract(
 112                 cairo_t* cr, Gdk::Color const * const c, const uint32_t peakcolor, const MeterType mt, const float val)
 113 {
 114         float fraction = 0;
 115
 116         switch (mt) {
 117                 default:
 118                 case MeterKrms:
 119                 case MeterPeak:
 120                         fraction = log_meter (val);
 121                         if (val >= 0 || val == -9) {
 122                                 cairo_set_source_rgb (cr,
 123                                                 UINT_RGBA_R_FLT(peakcolor),
 124                                                 UINT_RGBA_G_FLT(peakcolor),
 125                                                 UINT_RGBA_B_FLT(peakcolor));
 126                         } else {
 127                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 128                         }
 129                         break;
 130                 case MeterIEC2BBC:
 131                         fraction = meter_deflect_ppm(val);
 132                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 133                         break;
 134                 case MeterIEC2EBU:
 135                         fraction = meter_deflect_ppm(val);
 136                         if (val >= -10.0) {
 137                                 cairo_set_source_rgb (cr,
 138                                                 UINT_RGBA_R_FLT(peakcolor),
 139                                                 UINT_RGBA_G_FLT(peakcolor),
 140                                                 UINT_RGBA_B_FLT(peakcolor));
 141                         } else {
 142                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 143                         }
 144                         break;
 145                 case MeterIEC1NOR:
 146                         fraction = meter_deflect_nordic(val);
 147                         if (val >= -12.0) {
 148                                 cairo_set_source_rgb (cr,
 149                                                 UINT_RGBA_R_FLT(peakcolor),
 150                                                 UINT_RGBA_G_FLT(peakcolor),
 151                                                 UINT_RGBA_B_FLT(peakcolor));
 152                         } else {
 153                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 154                         }
 155                         break;
 156                 case MeterIEC1DIN:
 157                         fraction = meter_deflect_din(val);
 158                         if (val >= -9.0) {
 159                                 cairo_set_source_rgb (cr,
 160                                                 UINT_RGBA_R_FLT(peakcolor),
 161                                                 UINT_RGBA_G_FLT(peakcolor),
 162                                                 UINT_RGBA_B_FLT(peakcolor));
 163                         } else {
 164                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 165                         }
 166                         break;
 167                 case MeterVU:
 168                         fraction = meter_deflect_vu(val);
 169                         if (val >= -20.0) {
 170                                 cairo_set_source_rgb (cr,
 171                                                 UINT_RGBA_R_FLT(peakcolor),
 172                                                 UINT_RGBA_G_FLT(peakcolor),
 173                                                 UINT_RGBA_B_FLT(peakcolor));
 174                         } else {
 175                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 176                         }
 177                         break;
 178                 case MeterK20:
 179                         fraction = meter_deflect_k (val, 20);
 180                         if (val >= -16.0) {
 181                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 182                         } else if (val >= -20.0) {
 183                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 184                         } else {
 185                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 186                         }
 187                         break;
 188                 case MeterK14:
 189                         if (val >= -10.0) {
 190                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 191                         } else if (val >= -14.0) {
 192                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 193                         } else {
 194                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 195                         }
 196                         fraction = meter_deflect_k (val, 14);
 197                         break;
 198         }
 199         return fraction;
 200 }
 201
 202 static void set_bg_color(Gtk::Widget& w, cairo_t* cr, MeterType type) {
 203         switch(type) {
 204                 case MeterVU:
 205                         cairo_set_source_rgb (cr, 1.0, 1.0, 0.85);
 206                         break;
 207                 case MeterIEC1DIN:
 208                 case MeterIEC1NOR:
 209                 case MeterIEC2BBC:
 210                 case MeterIEC2EBU:
 211                 case MeterK14:
 212                 case MeterK20:
 213                         cairo_set_source_rgb (cr, 0.1, 0.1, 0.1);
 214                         break;
 215                 default:
 216                         {
 217                         Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 218                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 219                         }
 220                         break;
 221         }
 222 }
 223
 224 static void set_fg_color(MeterType type, Gdk::Color * c) {
 225         switch(type) {
 226                 case MeterVU:
 227                         c->set_rgb_p(0.0, 0.0, 0.0);
 228                         break;
 229                 default:
 230                         c->set_rgb_p(1.0, 1.0, 1.0);
 231                         break;
 232         }
 233 }
 234
 235 static cairo_pattern_t*
 236 meter_render_ticks (Gtk::Widget& w, MeterType type, vector<ARDOUR::DataType> types)
 237 {
 238         Glib::RefPtr<Gdk::Window> win (w.get_window());
 239
 240         bool background;
 241         gint width, height;
 242         win->get_size (width, height);
 243         background = types.size() == 0
 244                 || w.get_name().substr(w.get_name().length() - 4) == "Left"
 245                 || w.get_name().substr(w.get_name().length() - 5) == "Right";
 246
 247         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 248         cairo_t* cr = cairo_create (surface);
 249
 250         cairo_move_to (cr, 0, 0);
 251         cairo_rectangle (cr, 0, 0, width, height);
 252
 253         if (background) {
 254                 /* meterbridge */
 255                 set_bg_color(w, cr, type);
 256         } else {
 257                 /* mixer */
 258                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 259                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 260         }
 261         cairo_fill (cr);
 262
 263         height = min(max_pattern_metric_size, height);
 264         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 265
 266         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 267
 268                 Gdk::Color c;
 269                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 270                         /* we're overlaying more than 1 set of marks, so use different colours */
 271                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 272                 } else if (background) {
 273                         set_fg_color(type, &c);
 274                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 275                 } else {
 276                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 277                 }
 278                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 279
 280                 // tick-maker position in dBFS, line-thickness
 281                 std::map<float,float> points;
 282
 283                 switch (*i) {
 284                 case DataType::AUDIO:
 285
 286                         switch (type) {
 287                                 case MeterK14:
 288                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 289                                         points.insert (std::pair<float,float>(-44.0f, 1.0));
 290                                         points.insert (std::pair<float,float>(-34.0f, 1.0));
 291                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 292                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 293                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 294                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 295                                         points.insert (std::pair<float,float>(-11.0f, 1.0));
 296                                         points.insert (std::pair<float,float>( -8.0f, 1.0));
 297                                         points.insert (std::pair<float,float>( -4.0f, 1.0));
 298                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 299                                         break;
 300                                 case MeterK20:
 301                                         points.insert (std::pair<float,float>(-60.0f, 1.0));
 302                                         points.insert (std::pair<float,float>(-50.0f, 1.0));
 303                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 304                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 305                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 306                                         points.insert (std::pair<float,float>(-23.0f, 1.0));
 307                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 308                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 309                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 310                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 311                                         points.insert (std::pair<float,float>( -5.0f, 1.0));
 312                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 313                                         break;
 314                                 case MeterIEC2EBU:
 315                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 316                                         points.insert (std::pair<float,float>(-28.0f, 0.5));
 317                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 318                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 319                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 320                                         points.insert (std::pair<float,float>(-20.0f, 0.5));
 321                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 322                                         points.insert (std::pair<float,float>(-16.0f, 0.5));
 323                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 324                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 325                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 326                                         points.insert (std::pair<float,float>( -9.0f, 0.5));
 327                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 328                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 329                                         break;
 330                                 case MeterIEC2BBC:
 331                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 332                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 333                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 334                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 335                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 336                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 337                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 338                                         break;
 339                                 case MeterIEC1NOR:
 340                                         points.insert (std::pair<float,float>(-60.0f, 1.0)); // -42
 341                                         points.insert (std::pair<float,float>(-57.0f, 0.5));
 342                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 343                                         points.insert (std::pair<float,float>(-51.0f, 0.5));
 344                                         points.insert (std::pair<float,float>(-48.0f, 1.0));
 345                                         points.insert (std::pair<float,float>(-45.0f, 0.5));
 346                                         points.insert (std::pair<float,float>(-42.0f, 1.0));
 347                                         points.insert (std::pair<float,float>(-39.0f, 0.5));
 348                                         points.insert (std::pair<float,float>(-36.0f, 1.0));
 349
 350                                         points.insert (std::pair<float,float>(-33.0f, 1.0));
 351                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 352                                         points.insert (std::pair<float,float>(-27.0f, 1.0));
 353                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 354                                         points.insert (std::pair<float,float>(-21.0f, 1.0));
 355
 356                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 357                                         points.insert (std::pair<float,float>(-15.0f, 1.0));
 358                                         points.insert (std::pair<float,float>(-12.0f, 1.0));
 359                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 360                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 361                                         break;
 362                                 case MeterIEC1DIN:
 363                                         points.insert (std::pair<float,float>( -3.0f, 0.5)); // "200%"
 364                                         points.insert (std::pair<float,float>( -4.0f, 1.0)); // "100%"
 365                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 366                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 367                                         points.insert (std::pair<float,float>(-15.0f, 0.5)); // "50%"
 368                                         points.insert (std::pair<float,float>(-18.0f, 0.5)); // "-9"
 369                                         points.insert (std::pair<float,float>(-19.0f, 1.0)); // "30%"
 370                                         points.insert (std::pair<float,float>(-29.0f, 1.0)); // "10%"
 371                                         points.insert (std::pair<float,float>(-35.0f, 0.5)); // "5%" " -20"
 372                                         points.insert (std::pair<float,float>(-39.0f, 1.0)); // "3%"
 373                                         points.insert (std::pair<float,float>(-49.0f, 0.5)); // "1%"
 374                                         points.insert (std::pair<float,float>(-59.0f, 1.0));
 375                                         break;
 376                                 case MeterVU:
 377                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 378                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 379                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 380                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 381                                         points.insert (std::pair<float,float>(-21.0f, 1.0));
 382                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 383                                         points.insert (std::pair<float,float>(-23.0f, 1.0));
 384                                         points.insert (std::pair<float,float>(-25.0f, 1.0));
 385                                         points.insert (std::pair<float,float>(-27.0f, 1.0));
 386                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 387                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 388                                         break;
 389
 390                                 default:
 391                                         points.insert (std::pair<float,float>(-60, 0.5));
 392                                         points.insert (std::pair<float,float>(-50, 1.0));
 393                                         points.insert (std::pair<float,float>(-40, 1.0));
 394                                         points.insert (std::pair<float,float>(-30, 1.0));
 395                                         if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 396                                                 points.insert (std::pair<float,float>(-24, 1.0));
 397                                         } else {
 398                                                 points.insert (std::pair<float,float>(-25, 1.0));
 399                                         }
 400                                         points.insert (std::pair<float,float>(-20, 1.0));
 401
 402                                         points.insert (std::pair<float,float>(-19, 0.5));
 403                                         points.insert (std::pair<float,float>(-18, 1.0));
 404                                         points.insert (std::pair<float,float>(-17, 0.5));
 405                                         points.insert (std::pair<float,float>(-16, 0.5));
 406                                         points.insert (std::pair<float,float>(-15, 1.0));
 407
 408                                         points.insert (std::pair<float,float>(-14, 0.5));
 409                                         points.insert (std::pair<float,float>(-13, 0.5));
 410                                         points.insert (std::pair<float,float>(-12, 0.5));
 411                                         points.insert (std::pair<float,float>(-11, 0.5));
 412                                         points.insert (std::pair<float,float>(-10, 1.0));
 413
 414                                         points.insert (std::pair<float,float>( -9, 1.0));
 415                                         points.insert (std::pair<float,float>( -8, 0.5));
 416                                         points.insert (std::pair<float,float>( -7, 0.5));
 417                                         points.insert (std::pair<float,float>( -6, 0.5));
 418                                         points.insert (std::pair<float,float>( -5, 1.0));
 419                                         points.insert (std::pair<float,float>( -4, 0.5));
 420                                         points.insert (std::pair<float,float>( -3, 1.0));
 421                                         points.insert (std::pair<float,float>( -2, 0.5));
 422                                         points.insert (std::pair<float,float>( -1, 0.5));
 423
 424                                         points.insert (std::pair<float,float>(  0, 1.0));
 425                                         points.insert (std::pair<float,float>(  1, 0.5));
 426                                         points.insert (std::pair<float,float>(  2, 0.5));
 427                                         points.insert (std::pair<float,float>(  3, 1.0));
 428                                         points.insert (std::pair<float,float>(  4, 0.5));
 429                                         points.insert (std::pair<float,float>(  5, 0.5));
 430                                         break;
 431                         }
 432                         break;
 433
 434                 case DataType::MIDI:
 435                         points.insert (std::pair<float,float>(  0, 1.0));
 436                         points.insert (std::pair<float,float>( 16, 0.5));
 437                         points.insert (std::pair<float,float>( 32, 0.5));
 438                         points.insert (std::pair<float,float>( 48, 0.5));
 439                         points.insert (std::pair<float,float>( 64, 1.0));
 440                         points.insert (std::pair<float,float>( 80, 0.5));
 441                         points.insert (std::pair<float,float>( 96, 0.5));
 442                         points.insert (std::pair<float,float>(100, 1.0));
 443                         points.insert (std::pair<float,float>(112, 0.5));
 444                         points.insert (std::pair<float,float>(127, 1.0));
 445                         break;
 446                 }
 447
 448                 for (std::map<float,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 449                         cairo_set_line_width (cr, (j->second));
 450
 451                         float fraction = 0;
 452                         gint pos;
 453
 454                         switch (*i) {
 455                         case DataType::AUDIO:
 456                                 fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 457
 458                                 pos = height - (gint) floor (height * fraction);
 459                                 pos = max (pos, 1);
 460                                 cairo_move_to(cr, 0, pos + .5);
 461                                 cairo_line_to(cr, 3, pos + .5);
 462                                 cairo_stroke (cr);
 463                                 break;
 464                         case DataType::MIDI:
 465                                 fraction = (j->first) / 127.0;
 466                                 pos = 1 + height - (gint) floor (height * fraction);
 467                                 pos = min (pos, height);
 468                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 469                                 cairo_fill(cr);
 470                                 break;
 471                         }
 472                 }
 473         }
 474
 475         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 476
 477         cairo_destroy (cr);
 478         cairo_surface_destroy (surface);
 479
 480         return pattern;
 481 }
 482
 483 static cairo_pattern_t*
 484 meter_render_metrics (Gtk::Widget& w, MeterType type, vector<DataType> types)
 485 {
 486         Glib::RefPtr<Gdk::Window> win (w.get_window());
 487
 488         bool tickleft, tickright;
 489         bool background;
 490         gint width, height;
 491         win->get_size (width, height);
 492
 493         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 494         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 495         background = types.size() == 0 || tickleft || tickright;
 496
 497         if (!tickleft && !tickright) {
 498                 tickright = true;
 499         }
 500
 501         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 502         cairo_t* cr = cairo_create (surface);
 503         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 504
 505         Pango::AttrList audio_font_attributes;
 506         Pango::AttrList midi_font_attributes;
 507         Pango::AttrList unit_font_attributes;
 508
 509         Pango::AttrFontDesc* font_attr;
 510         Pango::FontDescription font;
 511
 512         font = Pango::FontDescription ("ArdourMono");
 513         double fixfontsize = 81920.0 / (double) ARDOUR::Config->get_font_scale();
 514
 515         font.set_weight (Pango::WEIGHT_NORMAL);
 516         font.set_size (9.0 * PANGO_SCALE * fixfontsize);
 517         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 518         audio_font_attributes.change (*font_attr);
 519         delete font_attr;
 520
 521         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 522         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 523         font.set_size (8.0 * PANGO_SCALE * fixfontsize);
 524         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 525         midi_font_attributes.change (*font_attr);
 526         delete font_attr;
 527
 528         font.set_size (6.0 * PANGO_SCALE * fixfontsize);
 529         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 530         unit_font_attributes.change (*font_attr);
 531         delete font_attr;
 532
 533         cairo_move_to (cr, 0, 0);
 534         cairo_rectangle (cr, 0, 0, width, height);
 535         if (background) {
 536                 /* meterbridge */
 537                 set_bg_color(w, cr, type);
 538         } else {
 539                 /* mixer */
 540                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 541                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 542         }
 543         cairo_fill (cr);
 544
 545         cairo_set_line_width (cr, 1.0);
 546
 547         height = min(max_pattern_metric_size, height);
 548         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 549         Gdk::Color c;
 550
 551         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 552
 553                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 554                         /* we're overlaying more than 1 set of marks, so use different colours */
 555                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 556                 } else if (background) {
 557                         set_fg_color(type, &c);
 558                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 559                 } else {
 560                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 561                 }
 562                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 563
 564
 565                 // label-pos in dBFS, label-text
 566                 std::map<float,string> points;
 567
 568                 switch (*i) {
 569                 case DataType::AUDIO:
 570                         layout->set_attributes (audio_font_attributes);
 571                         switch (type) {
 572                                 case MeterK14:
 573                                         points.insert (std::pair<float,string>(-54.0f, "-40"));
 574                                         points.insert (std::pair<float,string>(-44.0f, "-30"));
 575                                         points.insert (std::pair<float,string>(-34.0f, "-20"));
 576                                         points.insert (std::pair<float,string>(-24.0f, "-10"));
 577                                         points.insert (std::pair<float,string>(-20.0f,  "-6"));
 578                                         points.insert (std::pair<float,string>(-17.0f,  "-3"));
 579                                         points.insert (std::pair<float,string>(-14.0f,   "0"));
 580                                         points.insert (std::pair<float,string>(-11.0f,  "+3"));
 581                                         points.insert (std::pair<float,string>( -8.0f,  "+6"));
 582                                         points.insert (std::pair<float,string>( -4.0f, "+10"));
 583                                         points.insert (std::pair<float,string>(  0.0f, "+14"));
 584                                         break;
 585                                 case MeterK20:
 586                                         points.insert (std::pair<float,string>(-60.0f, "-40"));
 587                                         points.insert (std::pair<float,string>(-50.0f, "-30"));
 588                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 589                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 590                                         points.insert (std::pair<float,string>(-26.0f,  "-6"));
 591                                         points.insert (std::pair<float,string>(-23.0f,  "-3"));
 592                                         points.insert (std::pair<float,string>(-20.0f,   "0"));
 593                                         points.insert (std::pair<float,string>(-17.0f,  "+3"));
 594                                         points.insert (std::pair<float,string>(-14.0f,  "+6"));
 595                                         points.insert (std::pair<float,string>(-10.0f, "+10"));
 596                                         points.insert (std::pair<float,string>( -5.0f, "+15"));
 597                                         points.insert (std::pair<float,string>(  0.0f, "+20"));
 598                                         break;
 599                                 default:
 600                                 case MeterPeak:
 601                                 case MeterKrms:
 602                                         points.insert (std::pair<float,string>(-50.0f, "-50"));
 603                                         points.insert (std::pair<float,string>(-40.0f, "-40"));
 604                                         points.insert (std::pair<float,string>(-30.0f, "-30"));
 605                                         points.insert (std::pair<float,string>(-20.0f, "-20"));
 606                                         if (types.size() == 1) {
 607                                                 if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 608                                                         points.insert (std::pair<float,string>(-24.0f, "-24"));
 609                                                 } else {
 610                                                         points.insert (std::pair<float,string>(-25.0f, "-25"));
 611                                                 }
 612                                                 points.insert (std::pair<float,string>(-15.0f, "-15"));
 613                                         }
 614                                         points.insert (std::pair<float,string>(-18.0f, "-18"));
 615                                         points.insert (std::pair<float,string>(-10.0f, "-10"));
 616                                         points.insert (std::pair<float,string>( -5.0f, "-5"));
 617                                         points.insert (std::pair<float,string>( -3.0f, "-3"));
 618                                         points.insert (std::pair<float,string>(  0.0f, "+0"));
 619                                         points.insert (std::pair<float,string>(  3.0f, "+3"));
 620                                         break;
 621
 622                                 case MeterIEC2EBU:
 623                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 624                                         points.insert (std::pair<float,string>(-26.0f, "-8"));
 625                                         points.insert (std::pair<float,string>(-22.0f, "-4"));
 626                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 627                                         points.insert (std::pair<float,string>(-14.0f, "+4"));
 628                                         points.insert (std::pair<float,string>(-10.0f, "+8"));
 629                                         points.insert (std::pair<float,string>( -6.0f, "+12"));
 630                                         break;
 631
 632                                 case MeterIEC2BBC:
 633                                         points.insert (std::pair<float,string>(-30.0f, " 1 "));
 634                                         points.insert (std::pair<float,string>(-26.0f, " 2 "));
 635                                         points.insert (std::pair<float,string>(-22.0f, " 3 "));
 636                                         points.insert (std::pair<float,string>(-18.0f, " 4 "));
 637                                         points.insert (std::pair<float,string>(-14.0f, " 5 "));
 638                                         points.insert (std::pair<float,string>(-10.0f, " 6 "));
 639                                         points.insert (std::pair<float,string>( -6.0f, " 7 "));
 640                                         break;
 641
 642                                 case MeterIEC1NOR:
 643                                         //points.insert (std::pair<float,string>(-60.0f, "-42"));
 644                                         points.insert (std::pair<float,string>(-54.0f, "-36"));
 645                                         points.insert (std::pair<float,string>(-48.0f, "-30"));
 646                                         points.insert (std::pair<float,string>(-42.0f, "-24"));
 647                                         points.insert (std::pair<float,string>(-36.0f, "-18"));
 648
 649                                         points.insert (std::pair<float,string>(-33.0f, "-15"));
 650                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 651                                         points.insert (std::pair<float,string>(-27.0f, "-9"));
 652                                         points.insert (std::pair<float,string>(-24.0f, "-6"));
 653                                         points.insert (std::pair<float,string>(-21.0f, "-3"));
 654
 655                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 656                                         points.insert (std::pair<float,string>(-15.0f, "+3"));
 657                                         points.insert (std::pair<float,string>(-12.0f, "+6"));
 658                                         points.insert (std::pair<float,string>( -9.0f, "+9"));
 659                                         points.insert (std::pair<float,string>( -6.0f, "+12"));
 660                                         break;
 661
 662                                 case MeterIEC1DIN:
 663                                         //points.insert (std::pair<float,string>( -3.0f, "200%"));
 664                                         points.insert (std::pair<float,string>( -4.0f, "+5")); // "100%"
 665                                         points.insert (std::pair<float,string>( -9.0f, "0"));
 666                                         points.insert (std::pair<float,string>(-14.0f, "-5"));
 667                                         //points.insert (std::pair<float,string>(-15.0f, "50%"));
 668                                         //points.insert (std::pair<float,string>(-18.0f, "-9"));
 669                                         points.insert (std::pair<float,string>(-19.0f, "-10")); // "30%"
 670                                         points.insert (std::pair<float,string>(-29.0f, "-20")); // "10%"
 671                                         //points.insert (std::pair<float,string>(-35.0f, "-20")); // "5%"
 672                                         points.insert (std::pair<float,string>(-39.0f, "-30")); // "3%"
 673                                         //points.insert (std::pair<float,string>(-49.0f, "1%"));
 674                                         points.insert (std::pair<float,string>(-59.0f, "-50"));
 675                                         break;
 676
 677                                 case MeterVU:
 678                                         points.insert (std::pair<float,string>(-17.0f, "+3"));
 679                                         points.insert (std::pair<float,string>(-18.0f, "+2"));
 680                                         points.insert (std::pair<float,string>(-19.0f, "+1"));
 681                                         points.insert (std::pair<float,string>(-20.0f, "0"));
 682                                         points.insert (std::pair<float,string>(-21.0f, "-1"));
 683                                         points.insert (std::pair<float,string>(-22.0f, "-2"));
 684                                         points.insert (std::pair<float,string>(-23.0f, "-3"));
 685                                         points.insert (std::pair<float,string>(-25.0f, "-5"));
 686                                         points.insert (std::pair<float,string>(-27.0f, "-7"));
 687                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 688                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 689                                         break;
 690                         }
 691                         break;
 692                 case DataType::MIDI:
 693                         layout->set_attributes (midi_font_attributes);
 694                         points.insert (std::pair<float,string>(  0, "0"));
 695                         if (types.size() == 1) {
 696                                 points.insert (std::pair<float,string>( 16,  "16"));
 697                                 points.insert (std::pair<float,string>( 32,  "32"));
 698                                 points.insert (std::pair<float,string>( 48,  "48"));
 699                                 points.insert (std::pair<float,string>( 64,  "64"));
 700                                 points.insert (std::pair<float,string>( 80,  "80"));
 701                                 points.insert (std::pair<float,string>( 96,  "96"));
 702                                 points.insert (std::pair<float,string>(100, "100"));
 703                                 points.insert (std::pair<float,string>(112, "112"));
 704                         } else {
 705                                 /* labels that don't overlay with dB */
 706                                 points.insert (std::pair<float,string>( 24, "24"));
 707                                 points.insert (std::pair<float,string>( 48, "48"));
 708                                 points.insert (std::pair<float,string>( 72, "74"));
 709                         }
 710                         points.insert (std::pair<float,string>(127, "127"));
 711                         break;
 712                 }
 713
 714                 gint pos;
 715
 716                 for (std::map<float,string>::const_iterator j = points.begin(); j != points.end(); ++j) {
 717                         float fraction = 0;
 718                         bool align_center = background; // this is true for meterbridge meters w/ fixed background
 719                         switch (*i) {
 720                                 case DataType::AUDIO:
 721                                         fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 722
 723                                         pos = height - (gint) floor (height * fraction);
 724                                         pos = max (pos, 1);
 725                                         if (tickleft) {
 726                                                 cairo_move_to(cr, width-1.5, pos + .5);
 727                                                 cairo_line_to(cr, width, pos + .5);
 728                                                 cairo_stroke (cr);
 729                                         } else if (tickright) {
 730                                                 cairo_move_to(cr, 0, pos + .5);
 731                                                 cairo_line_to(cr, 1.5, pos + .5);
 732                                                 cairo_stroke (cr);
 733                                         }
 734                                         break;
 735
 736                                 case DataType::MIDI:
 737                                         align_center = false; // don't bleed into legend
 738                                         fraction = (j->first) / 127.0;
 739                                         pos = 1 + height - (gint) rintf (height * fraction);
 740                                         pos = min (pos, height);
 741                                         if (tickleft) {
 742                                                 cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
 743                                                 cairo_fill(cr);
 744                                         } else if (tickright) {
 745                                                 cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 746                                                 cairo_fill(cr);
 747                                         }
 748                                         break;
 749                         }
 750
 751                         layout->set_text(j->second.c_str());
 752
 753                         int tw, th;
 754                         layout->get_pixel_size(tw, th);
 755
 756                         int p = pos - (th / 2) - 1;
 757                         p = min (p, height - th);
 758                         p = max (p, 0);
 759
 760                         if (align_center) {
 761                                 cairo_move_to (cr, (width-tw)/2.0, p);
 762                         } else {
 763                                 cairo_move_to (cr, width-3-tw, p);
 764                         }
 765                         pango_cairo_show_layout (cr, layout->gobj());
 766                 }
 767         }
 768
 769         // add legend
 770         if (types.size() == 1) {
 771                 int tw, th;
 772                 layout->set_attributes (unit_font_attributes);
 773                 switch (types.at(0)) {
 774                         case DataType::AUDIO:
 775                                 switch (type) {
 776                                         case MeterK20:
 777                                                 layout->set_text("K20");
 778                                                 break;
 779                                         case MeterK14:
 780                                                 layout->set_text("K14");
 781                                                 break;
 782                                         default:
 783                                         case MeterPeak:
 784                                         case MeterKrms:
 785                                                 layout->set_text("dBFS");
 786                                                 break;
 787                                         case MeterIEC2EBU:
 788                                                 layout->set_text("EBU");
 789                                                 break;
 790                                         case MeterIEC2BBC:
 791                                                 layout->set_text("BBC");
 792                                                 break;
 793                                         case MeterIEC1DIN:
 794                                                 layout->set_text("DIN");
 795                                                 break;
 796                                         case MeterIEC1NOR:
 797                                                 layout->set_text("NOR");
 798                                                 break;
 799                                         case MeterVU:
 800                                                 layout->set_text("VU");
 801                                                 break;
 802                                 }
 803                                 layout->get_pixel_size(tw, th);
 804                                 break;
 805                         case DataType::MIDI:
 806                                 layout->set_text("mid");
 807                                 layout->get_pixel_size(tw, th);
 808                                 break;
 809                 }
 810                 if (!background) {
 811                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 812                 }
 813                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 814                 if (tickleft) {
 815                         cairo_move_to (cr, width - 2 - tw, height - th - 0.5);
 816                 } else {
 817                         cairo_move_to (cr, 2, height - th - 0.5);
 818                 }
 819                 pango_cairo_show_layout (cr, layout->gobj());
 820         }
 821
 822         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 823
 824         cairo_destroy (cr);
 825         cairo_surface_destroy (surface);
 826
 827         return pattern;
 828 }
 829
 830 gint
 831 ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
 832 {
 833         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 834         cairo_t* cr;
 835
 836         cr = gdk_cairo_create (win->gobj());
 837
 838         /* clip to expose area */
 839
 840         gdk_cairo_rectangle (cr, &ev->area);
 841         cairo_clip (cr);
 842
 843         cairo_pattern_t* pattern;
 844         const MeterMatricsMapKey key (mta->get_name(), type);
 845         MetricPatternMap::iterator i = ticks_patterns.find (key);
 846
 847         if (i == ticks_patterns.end()) {
 848                 pattern = meter_render_ticks (*mta, type, types);
 849                 ticks_patterns[key] = pattern;
 850         } else {
 851                 pattern = i->second;
 852         }
 853
 854         cairo_move_to (cr, 0, 0);
 855         cairo_set_source (cr, pattern);
 856
 857         gint width, height;
 858         win->get_size (width, height);
 859
 860         cairo_rectangle (cr, 0, 0, width, height);
 861         cairo_fill (cr);
 862
 863         cairo_destroy (cr);
 864
 865         return true;
 866 }
 867
 868 gint
 869 ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
 870 {
 871         Glib::RefPtr<Gdk::Window> win (mma->get_window());
 872         cairo_t* cr;
 873
 874         cr = gdk_cairo_create (win->gobj());
 875
 876         /* clip to expose area */
 877
 878         gdk_cairo_rectangle (cr, &ev->area);
 879         cairo_clip (cr);
 880
 881         cairo_pattern_t* pattern;
 882         const MeterMatricsMapKey key (mma->get_name(), type);
 883         MetricPatternMap::iterator i = metric_patterns.find (key);
 884
 885         if (i == metric_patterns.end()) {
 886                 pattern = meter_render_metrics (*mma, type, types);
 887                 metric_patterns[key] = pattern;
 888         } else {
 889                 pattern = i->second;
 890         }
 891
 892         cairo_move_to (cr, 0, 0);
 893         cairo_set_source (cr, pattern);
 894
 895         gint width, height;
 896         win->get_size (width, height);
 897
 898         cairo_rectangle (cr, 0, 0, width, height);
 899         cairo_fill (cr);
 900
 901         cairo_destroy (cr);
 902
 903         return true;
 904 }
 905
 906 void
 907 ArdourMeter::meter_clear_pattern_cache(int which) {
 908         MetricPatternMap::iterator i = metric_patterns.begin();
 909         MetricPatternMap::iterator j = ticks_patterns.begin();
 910
 911         while (i != metric_patterns.end()) {
 912                 int m = 4;
 913                 MeterMatricsMapKey const * const key = &(i->first);
 914                 std::string n = key->_n;
 915                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 916                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 917                 if (which & m) {
 918                         cairo_pattern_destroy(i->second);
 919                         metric_patterns.erase(i++);
 920                 } else {
 921                         ++i;
 922                 }
 923         }
 924
 925         while (j != ticks_patterns.end()) {
 926                 int m = 4;
 927                 MeterMatricsMapKey const * const key = &(j->first);
 928                 std::string n = key->_n;
 929                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 930                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 931                 if (which & m) {
 932                         cairo_pattern_destroy(j->second);
 933                         ticks_patterns.erase(j++);
 934                 } else {
 935                         ++j;
 936                 }
 937         }
 938         RedrawMetrics();
 939 }