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, int dt)
  56                 : _n(n)
  57                 , _t(t)
  58                 , _dt(dt)
  59         {}
  60         inline bool operator<(const MeterMatricsMapKey& rhs) const {
  61                 return (_n < rhs._n) || (_n == rhs._n && _t < rhs._t) || (_n == rhs._n && _t == rhs._t && _dt < rhs._dt);
  62         }
  63         std::string _n;
  64         MeterType _t;
  65         int _dt;
  66 };
  67
  68 namespace ArdourMeter {
  69         typedef std::map<MeterMatricsMapKey, cairo_pattern_t*> MetricPatternMap;
  70 }
  71
  72 static ArdourMeter::MetricPatternMap ticks_patterns;
  73 static ArdourMeter::MetricPatternMap metric_patterns;
  74
  75
  76 const std::string
  77 ArdourMeter::meter_type_string (ARDOUR::MeterType mt)
  78 {
  79         switch (mt) {
  80                 case MeterPeak:
  81                         return _("Peak");
  82                         break;
  83                 case MeterKrms:
  84                         return _("RMS + Peak");
  85                         break;
  86                 case MeterIEC1DIN:
  87                         return _("IEC1/DIN");
  88                         break;
  89                 case MeterIEC1NOR:
  90                         return _("IEC1/Nordic");
  91                         break;
  92                 case MeterIEC2BBC:
  93                         return _("IEC2/BBC");
  94                         break;
  95                 case MeterIEC2EBU:
  96                         return _("IEC2/EBU");
  97                         break;
  98                 case MeterK20:
  99                         return _("K20");
 100                         break;
 101                 case MeterK14:
 102                         return _("K14");
 103                         break;
 104                 case MeterVU:
 105                         return _("VU");
 106                         break;
 107                 default:
 108                         return _("???");
 109                         break;
 110         }
 111 }
 112
 113 static inline int types_to_bit (vector<ARDOUR::DataType> types) {
 114         int rv = 0;
 115         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 116                 rv |= 1 << (*i);
 117         }
 118         return rv;
 119 }
 120
 121 static inline float mtr_col_and_fract(
 122                 cairo_t* cr, Gdk::Color const * const c, const uint32_t peakcolor, const MeterType mt, const float val)
 123 {
 124         float fraction = 0;
 125
 126         switch (mt) {
 127                 default:
 128                 case MeterKrms:
 129                 case MeterPeak:
 130                         fraction = log_meter (val);
 131                         if (val >= 0 || val == -9) {
 132                                 cairo_set_source_rgb (cr,
 133                                                 UINT_RGBA_R_FLT(peakcolor),
 134                                                 UINT_RGBA_G_FLT(peakcolor),
 135                                                 UINT_RGBA_B_FLT(peakcolor));
 136                         } else {
 137                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 138                         }
 139                         break;
 140                 case MeterIEC2BBC:
 141                         fraction = meter_deflect_ppm(val);
 142                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 143                         break;
 144                 case MeterIEC2EBU:
 145                         fraction = meter_deflect_ppm(val);
 146                         if (val >= -10.0) {
 147                                 cairo_set_source_rgb (cr,
 148                                                 UINT_RGBA_R_FLT(peakcolor),
 149                                                 UINT_RGBA_G_FLT(peakcolor),
 150                                                 UINT_RGBA_B_FLT(peakcolor));
 151                         } else {
 152                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 153                         }
 154                         break;
 155                 case MeterIEC1NOR:
 156                         fraction = meter_deflect_nordic(val);
 157                         if (val >= -12.0) {
 158                                 cairo_set_source_rgb (cr,
 159                                                 UINT_RGBA_R_FLT(peakcolor),
 160                                                 UINT_RGBA_G_FLT(peakcolor),
 161                                                 UINT_RGBA_B_FLT(peakcolor));
 162                         } else {
 163                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 164                         }
 165                         break;
 166                 case MeterIEC1DIN:
 167                         fraction = meter_deflect_din(val);
 168                         if (val >= -9.0) {
 169                                 cairo_set_source_rgb (cr,
 170                                                 UINT_RGBA_R_FLT(peakcolor),
 171                                                 UINT_RGBA_G_FLT(peakcolor),
 172                                                 UINT_RGBA_B_FLT(peakcolor));
 173                         } else {
 174                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 175                         }
 176                         break;
 177                 case MeterVU:
 178                         fraction = meter_deflect_vu(val);
 179                         if (val >= -20.0) {
 180                                 cairo_set_source_rgb (cr,
 181                                                 UINT_RGBA_R_FLT(peakcolor),
 182                                                 UINT_RGBA_G_FLT(peakcolor),
 183                                                 UINT_RGBA_B_FLT(peakcolor));
 184                         } else {
 185                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 186                         }
 187                         break;
 188                 case MeterK20:
 189                         fraction = meter_deflect_k (val, 20);
 190                         if (val >= -16.0) {
 191                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 192                         } else if (val >= -20.0) {
 193                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 194                         } else {
 195                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 196                         }
 197                         break;
 198                 case MeterK14:
 199                         if (val >= -10.0) {
 200                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 201                         } else if (val >= -14.0) {
 202                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 203                         } else {
 204                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 205                         }
 206                         fraction = meter_deflect_k (val, 14);
 207                         break;
 208         }
 209         return fraction;
 210 }
 211
 212 static void set_bg_color(Gtk::Widget& w, cairo_t* cr, MeterType type) {
 213         float r,g,b;
 214         switch(type) {
 215                 case MeterVU:
 216                         if (rgba_p_from_style("meterstripVU", &r, &g, &b, "bg")) {
 217                                 cairo_set_source_rgb (cr, r, g, b);
 218                         } else {
 219                                 cairo_set_source_rgb (cr, 1.0, 1.0, 0.85);
 220                         }
 221                         break;
 222                 case MeterIEC1DIN:
 223                 case MeterIEC1NOR:
 224                 case MeterIEC2BBC:
 225                 case MeterIEC2EBU:
 226                 case MeterK14:
 227                 case MeterK20:
 228                         if (rgba_p_from_style("meterstripPPM", &r, &g, &b, "bg")) {
 229                                 cairo_set_source_rgb (cr, r, g, b);
 230                         } else {
 231                                 cairo_set_source_rgb (cr, 0.1, 0.1, 0.1);
 232                         }
 233                         break;
 234                 default:
 235                         {
 236                         Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 237                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 238                         }
 239                         break;
 240         }
 241 }
 242
 243 static void set_fg_color(Gtk::Widget& w, MeterType type, Gdk::Color * c) {
 244         float r,g,b;
 245         switch(type) {
 246                 case MeterVU:
 247                         if (rgba_p_from_style("meterstripVU", &r, &g, &b)) {
 248                                 c->set_rgb_p(r, g, b);
 249                         } else {
 250                                 c->set_rgb_p(0.0, 0.0, 0.0);
 251                         }
 252                         break;
 253                 default:
 254                         if (rgba_p_from_style("meterstripPPM", &r, &g, &b)) {
 255                                 c->set_rgb_p(r, g, b);
 256                         } else {
 257                                 c->set_rgb_p(1.0, 1.0, 1.0);
 258                         }
 259                         break;
 260         }
 261 }
 262
 263 static cairo_pattern_t*
 264 meter_render_ticks (Gtk::Widget& w, MeterType type, vector<ARDOUR::DataType> types)
 265 {
 266         Glib::RefPtr<Gdk::Window> win (w.get_window());
 267
 268         bool background;
 269         gint width, height;
 270         win->get_size (width, height);
 271         background = types.size() == 0
 272                 || w.get_name().substr(w.get_name().length() - 4) == "Left"
 273                 || w.get_name().substr(w.get_name().length() - 5) == "Right";
 274
 275         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 276         cairo_t* cr = cairo_create (surface);
 277
 278         cairo_move_to (cr, 0, 0);
 279         cairo_rectangle (cr, 0, 0, width, height);
 280
 281         if (background) {
 282                 /* meterbridge */
 283                 set_bg_color(w, cr, type);
 284         } else {
 285                 /* mixer */
 286                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 287                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 288         }
 289         cairo_fill (cr);
 290
 291         height = min(max_pattern_metric_size, height);
 292         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 293
 294         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 295
 296                 Gdk::Color c;
 297                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 298                         /* we're overlaying more than 1 set of marks, so use different colours */
 299                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 300                 } else if (background) {
 301                         set_fg_color(w, type, &c);
 302                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 303                 } else {
 304                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 305                 }
 306                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 307
 308                 // tick-maker position in dBFS, line-thickness
 309                 std::map<float,float> points;
 310
 311                 switch (*i) {
 312                 case DataType::AUDIO:
 313
 314                         switch (type) {
 315                                 case MeterK14:
 316                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 317                                         points.insert (std::pair<float,float>(-44.0f, 1.0));
 318                                         points.insert (std::pair<float,float>(-34.0f, 1.0));
 319                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 320                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 321                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 322                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 323                                         points.insert (std::pair<float,float>(-11.0f, 1.0));
 324                                         points.insert (std::pair<float,float>( -8.0f, 1.0));
 325                                         points.insert (std::pair<float,float>( -4.0f, 1.0));
 326                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 327                                         break;
 328                                 case MeterK20:
 329                                         points.insert (std::pair<float,float>(-60.0f, 1.0));
 330                                         points.insert (std::pair<float,float>(-50.0f, 1.0));
 331                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 332                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 333                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 334                                         points.insert (std::pair<float,float>(-23.0f, 1.0));
 335                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 336                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 337                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 338                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 339                                         points.insert (std::pair<float,float>( -5.0f, 1.0));
 340                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 341                                         break;
 342                                 case MeterIEC2EBU:
 343                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 344                                         points.insert (std::pair<float,float>(-28.0f, 0.5));
 345                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 346                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 347                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 348                                         points.insert (std::pair<float,float>(-20.0f, 0.5));
 349                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 350                                         points.insert (std::pair<float,float>(-16.0f, 0.5));
 351                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 352                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 353                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 354                                         points.insert (std::pair<float,float>( -9.0f, 0.5));
 355                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 356                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 357                                         break;
 358                                 case MeterIEC2BBC:
 359                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 360                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 361                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 362                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 363                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 364                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 365                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 366                                         break;
 367                                 case MeterIEC1NOR:
 368                                         points.insert (std::pair<float,float>(-60.0f, 1.0)); // -42
 369                                         points.insert (std::pair<float,float>(-57.0f, 0.5));
 370                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 371                                         points.insert (std::pair<float,float>(-51.0f, 0.5));
 372                                         points.insert (std::pair<float,float>(-48.0f, 1.0));
 373                                         points.insert (std::pair<float,float>(-45.0f, 0.5));
 374                                         points.insert (std::pair<float,float>(-42.0f, 1.0));
 375                                         points.insert (std::pair<float,float>(-39.0f, 0.5));
 376                                         points.insert (std::pair<float,float>(-36.0f, 1.0));
 377
 378                                         points.insert (std::pair<float,float>(-33.0f, 1.0));
 379                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 380                                         points.insert (std::pair<float,float>(-27.0f, 1.0));
 381                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 382                                         points.insert (std::pair<float,float>(-21.0f, 1.0));
 383
 384                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 385                                         points.insert (std::pair<float,float>(-15.0f, 1.0));
 386                                         points.insert (std::pair<float,float>(-12.0f, 1.0));
 387                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 388                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 389                                         break;
 390                                 case MeterIEC1DIN:
 391                                         points.insert (std::pair<float,float>( -3.0f, 0.5)); // "200%"
 392                                         points.insert (std::pair<float,float>( -4.0f, 1.0)); // "100%"
 393                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 394                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 395                                         points.insert (std::pair<float,float>(-15.0f, 0.5)); // "50%"
 396                                         points.insert (std::pair<float,float>(-18.0f, 0.5)); // "-9"
 397                                         points.insert (std::pair<float,float>(-19.0f, 1.0)); // "30%"
 398                                         points.insert (std::pair<float,float>(-29.0f, 1.0)); // "10%"
 399                                         points.insert (std::pair<float,float>(-35.0f, 0.5)); // "5%" " -20"
 400                                         points.insert (std::pair<float,float>(-39.0f, 1.0)); // "3%"
 401                                         points.insert (std::pair<float,float>(-49.0f, 0.5)); // "1%"
 402                                         points.insert (std::pair<float,float>(-59.0f, 1.0));
 403                                         break;
 404                                 case MeterVU:
 405                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 406                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 407                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 408                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 409                                         points.insert (std::pair<float,float>(-21.0f, 1.0));
 410                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 411                                         points.insert (std::pair<float,float>(-23.0f, 1.0));
 412                                         points.insert (std::pair<float,float>(-25.0f, 1.0));
 413                                         points.insert (std::pair<float,float>(-27.0f, 1.0));
 414                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 415                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 416                                         break;
 417
 418                                 default:
 419                                         points.insert (std::pair<float,float>(-60, 0.5));
 420                                         points.insert (std::pair<float,float>(-50, 1.0));
 421                                         points.insert (std::pair<float,float>(-40, 1.0));
 422                                         points.insert (std::pair<float,float>(-30, 1.0));
 423                                         if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 424                                                 points.insert (std::pair<float,float>(-24, 1.0));
 425                                         } else {
 426                                                 points.insert (std::pair<float,float>(-25, 1.0));
 427                                         }
 428                                         points.insert (std::pair<float,float>(-20, 1.0));
 429
 430                                         points.insert (std::pair<float,float>(-19, 0.5));
 431                                         points.insert (std::pair<float,float>(-18, 1.0));
 432                                         points.insert (std::pair<float,float>(-17, 0.5));
 433                                         points.insert (std::pair<float,float>(-16, 0.5));
 434                                         points.insert (std::pair<float,float>(-15, 1.0));
 435
 436                                         points.insert (std::pair<float,float>(-14, 0.5));
 437                                         points.insert (std::pair<float,float>(-13, 0.5));
 438                                         points.insert (std::pair<float,float>(-12, 0.5));
 439                                         points.insert (std::pair<float,float>(-11, 0.5));
 440                                         points.insert (std::pair<float,float>(-10, 1.0));
 441
 442                                         points.insert (std::pair<float,float>( -9, 1.0));
 443                                         points.insert (std::pair<float,float>( -8, 0.5));
 444                                         points.insert (std::pair<float,float>( -7, 0.5));
 445                                         points.insert (std::pair<float,float>( -6, 0.5));
 446                                         points.insert (std::pair<float,float>( -5, 1.0));
 447                                         points.insert (std::pair<float,float>( -4, 0.5));
 448                                         points.insert (std::pair<float,float>( -3, 1.0));
 449                                         points.insert (std::pair<float,float>( -2, 0.5));
 450                                         points.insert (std::pair<float,float>( -1, 0.5));
 451
 452                                         points.insert (std::pair<float,float>(  0, 1.0));
 453                                         points.insert (std::pair<float,float>(  1, 0.5));
 454                                         points.insert (std::pair<float,float>(  2, 0.5));
 455                                         points.insert (std::pair<float,float>(  3, 1.0));
 456                                         points.insert (std::pair<float,float>(  4, 0.5));
 457                                         points.insert (std::pair<float,float>(  5, 0.5));
 458                                         break;
 459                         }
 460                         break;
 461
 462                 case DataType::MIDI:
 463                         points.insert (std::pair<float,float>(  0, 1.0));
 464                         points.insert (std::pair<float,float>( 16, 0.5));
 465                         points.insert (std::pair<float,float>( 32, 0.5));
 466                         points.insert (std::pair<float,float>( 48, 0.5));
 467                         points.insert (std::pair<float,float>( 64, 1.0));
 468                         points.insert (std::pair<float,float>( 80, 0.5));
 469                         points.insert (std::pair<float,float>( 96, 0.5));
 470                         points.insert (std::pair<float,float>(100, 1.0));
 471                         points.insert (std::pair<float,float>(112, 0.5));
 472                         points.insert (std::pair<float,float>(127, 1.0));
 473                         break;
 474                 }
 475
 476                 for (std::map<float,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 477                         cairo_set_line_width (cr, (j->second));
 478
 479                         float fraction = 0;
 480                         gint pos;
 481
 482                         switch (*i) {
 483                         case DataType::AUDIO:
 484                                 fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 485
 486                                 pos = height - (gint) floor (height * fraction);
 487                                 pos = max (pos, 1);
 488                                 cairo_move_to(cr, 0, pos + .5);
 489                                 cairo_line_to(cr, 3, pos + .5);
 490                                 cairo_stroke (cr);
 491                                 break;
 492                         case DataType::MIDI:
 493                                 fraction = (j->first) / 127.0;
 494                                 pos = 1 + height - (gint) floor (height * fraction);
 495                                 pos = min (pos, height);
 496                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 497                                 cairo_fill(cr);
 498                                 break;
 499                         }
 500                 }
 501         }
 502
 503         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 504
 505         cairo_destroy (cr);
 506         cairo_surface_destroy (surface);
 507
 508         return pattern;
 509 }
 510
 511 static cairo_pattern_t*
 512 meter_render_metrics (Gtk::Widget& w, MeterType type, vector<DataType> types)
 513 {
 514         Glib::RefPtr<Gdk::Window> win (w.get_window());
 515
 516         bool tickleft, tickright;
 517         bool background;
 518         int overlay_midi = 1;
 519         gint width, height;
 520         win->get_size (width, height);
 521
 522         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 523         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 524         background = types.size() == 0 || tickleft || tickright;
 525
 526         if (!tickleft && !tickright) {
 527                 tickright = true;
 528         }
 529
 530         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 531         cairo_t* cr = cairo_create (surface);
 532         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 533
 534         Pango::AttrList audio_font_attributes;
 535         Pango::AttrList midi_font_attributes;
 536         Pango::AttrList unit_font_attributes;
 537
 538         Pango::AttrFontDesc* font_attr;
 539         Pango::FontDescription font;
 540
 541         font = Pango::FontDescription ("ArdourMono");
 542         double fixfontsize = 81920.0 / (double) ARDOUR::Config->get_font_scale();
 543
 544         font.set_weight (Pango::WEIGHT_NORMAL);
 545         font.set_size (9.0 * PANGO_SCALE * fixfontsize);
 546         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 547         audio_font_attributes.change (*font_attr);
 548         delete font_attr;
 549
 550         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 551         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 552         font.set_size (8.0 * PANGO_SCALE * fixfontsize);
 553         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 554         midi_font_attributes.change (*font_attr);
 555         delete font_attr;
 556
 557         font.set_size (6.0 * PANGO_SCALE * fixfontsize);
 558         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 559         unit_font_attributes.change (*font_attr);
 560         delete font_attr;
 561
 562         cairo_move_to (cr, 0, 0);
 563         cairo_rectangle (cr, 0, 0, width, height);
 564         if (background) {
 565                 /* meterbridge */
 566                 set_bg_color(w, cr, type);
 567         } else {
 568                 /* mixer */
 569                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 570                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 571         }
 572         cairo_fill (cr);
 573
 574         cairo_set_line_width (cr, 1.0);
 575
 576         height = min(max_pattern_metric_size, height);
 577         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 578         Gdk::Color c; // default text color
 579
 580         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 581
 582                 if (types.size() > 1 && (*i) == DataType::MIDI && overlay_midi == 0) {
 583                         continue;
 584                 }
 585
 586                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 587                         /* we're overlaying more than 1 set of marks, so use different colours */
 588                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 589                 } else if (background) {
 590                         set_fg_color(w, type, &c);
 591                 } else {
 592                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 593                 }
 594
 595                 std::map<float,string> points; // map: label-pos in dBFS, label-text
 596
 597                 switch (*i) {
 598                 case DataType::AUDIO:
 599                         layout->set_attributes (audio_font_attributes);
 600                         switch (type) {
 601                                 case MeterK14:
 602                                         overlay_midi = 0;
 603                                         points.insert (std::pair<float,string>(-54.0f, "-40"));
 604                                         points.insert (std::pair<float,string>(-44.0f, "-30"));
 605                                         points.insert (std::pair<float,string>(-34.0f, "-20"));
 606                                         points.insert (std::pair<float,string>(-24.0f, "-10"));
 607                                         points.insert (std::pair<float,string>(-20.0f,  "-6"));
 608                                         points.insert (std::pair<float,string>(-17.0f,  "-3"));
 609                                         points.insert (std::pair<float,string>(-14.0f,  " 0"));
 610                                         points.insert (std::pair<float,string>(-11.0f,  "+3"));
 611                                         points.insert (std::pair<float,string>( -8.0f,  "+6"));
 612                                         points.insert (std::pair<float,string>( -4.0f, "+10"));
 613                                         points.insert (std::pair<float,string>(  0.0f, "+14"));
 614                                         break;
 615                                 case MeterK20:
 616                                         overlay_midi = 0;
 617                                         points.insert (std::pair<float,string>(-60.0f, "-40"));
 618                                         points.insert (std::pair<float,string>(-50.0f, "-30"));
 619                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 620                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 621                                         points.insert (std::pair<float,string>(-26.0f,  "-6"));
 622                                         points.insert (std::pair<float,string>(-23.0f,  "-3"));
 623                                         points.insert (std::pair<float,string>(-20.0f,  " 0"));
 624                                         points.insert (std::pair<float,string>(-17.0f,  "+3"));
 625                                         points.insert (std::pair<float,string>(-14.0f,  "+6"));
 626                                         points.insert (std::pair<float,string>(-10.0f, "+10"));
 627                                         points.insert (std::pair<float,string>( -5.0f, "+15"));
 628                                         points.insert (std::pair<float,string>(  0.0f, "+20"));
 629                                         break;
 630                                 default:
 631                                 case MeterPeak:
 632                                 case MeterKrms:
 633                                         points.insert (std::pair<float,string>(-50.0f, "-50"));
 634                                         points.insert (std::pair<float,string>(-40.0f, "-40"));
 635                                         points.insert (std::pair<float,string>(-30.0f, "-30"));
 636                                         points.insert (std::pair<float,string>(-20.0f, "-20"));
 637                                         if (types.size() == 1) {
 638                                                 if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 639                                                         points.insert (std::pair<float,string>(-24.0f, "-24"));
 640                                                 } else {
 641                                                         points.insert (std::pair<float,string>(-25.0f, "-25"));
 642                                                 }
 643                                                 points.insert (std::pair<float,string>(-15.0f, "-15"));
 644                                         }
 645                                         points.insert (std::pair<float,string>(-18.0f, "-18"));
 646                                         points.insert (std::pair<float,string>(-10.0f, "-10"));
 647                                         points.insert (std::pair<float,string>( -5.0f, "-5"));
 648                                         points.insert (std::pair<float,string>( -3.0f, "-3"));
 649                                         points.insert (std::pair<float,string>(  0.0f, "+0"));
 650                                         points.insert (std::pair<float,string>(  3.0f, "+3"));
 651                                         break;
 652
 653                                 case MeterIEC2EBU:
 654                                         overlay_midi = 3;
 655                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 656                                         points.insert (std::pair<float,string>(-26.0f, "-8"));
 657                                         points.insert (std::pair<float,string>(-22.0f, "-4"));
 658                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 659                                         points.insert (std::pair<float,string>(-14.0f, "+4"));
 660                                         points.insert (std::pair<float,string>(-10.0f, "+8"));
 661                                         points.insert (std::pair<float,string>( -6.0f, "+12"));
 662                                         break;
 663
 664                                 case MeterIEC2BBC:
 665                                         overlay_midi = 3;
 666                                         points.insert (std::pair<float,string>(-30.0f, " 1 "));
 667                                         points.insert (std::pair<float,string>(-26.0f, " 2 "));
 668                                         points.insert (std::pair<float,string>(-22.0f, " 3 "));
 669                                         points.insert (std::pair<float,string>(-18.0f, " 4 "));
 670                                         points.insert (std::pair<float,string>(-14.0f, " 5 "));
 671                                         points.insert (std::pair<float,string>(-10.0f, " 6 "));
 672                                         points.insert (std::pair<float,string>( -6.0f, " 7 "));
 673                                         break;
 674
 675                                 case MeterIEC1NOR:
 676                                         overlay_midi = 0;
 677                                         //points.insert (std::pair<float,string>(-60.0f, "-42"));
 678                                         points.insert (std::pair<float,string>(-54.0f, "-36"));
 679                                         points.insert (std::pair<float,string>(-48.0f, "-30"));
 680                                         points.insert (std::pair<float,string>(-42.0f, "-24"));
 681                                         points.insert (std::pair<float,string>(-36.0f, "-18"));
 682
 683                                         points.insert (std::pair<float,string>(-33.0f, "-15"));
 684                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 685                                         points.insert (std::pair<float,string>(-27.0f, "-9"));
 686                                         points.insert (std::pair<float,string>(-24.0f, "-6"));
 687                                         points.insert (std::pair<float,string>(-21.0f, "-3"));
 688
 689                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 690                                         points.insert (std::pair<float,string>(-15.0f, "+3"));
 691                                         points.insert (std::pair<float,string>(-12.0f, "+6"));
 692                                         points.insert (std::pair<float,string>( -9.0f, "+9"));
 693                                         points.insert (std::pair<float,string>( -6.0f, "+12"));
 694                                         break;
 695
 696                                 case MeterIEC1DIN:
 697                                         overlay_midi = 2;
 698                                         //points.insert (std::pair<float,string>( -3.0f, "200%"));
 699                                         points.insert (std::pair<float,string>( -4.0f, "+5")); // "100%"
 700                                         points.insert (std::pair<float,string>( -9.0f, "0"));
 701                                         points.insert (std::pair<float,string>(-14.0f, "-5"));
 702                                         //points.insert (std::pair<float,string>(-15.0f, "50%"));
 703                                         //points.insert (std::pair<float,string>(-18.0f, "-9"));
 704                                         points.insert (std::pair<float,string>(-19.0f, "-10")); // "30%"
 705                                         points.insert (std::pair<float,string>(-29.0f, "-20")); // "10%"
 706                                         //points.insert (std::pair<float,string>(-35.0f, "-20")); // "5%"
 707                                         points.insert (std::pair<float,string>(-39.0f, "-30")); // "3%"
 708                                         //points.insert (std::pair<float,string>(-49.0f, "1%"));
 709                                         points.insert (std::pair<float,string>(-59.0f, "-50"));
 710                                         break;
 711
 712                                 case MeterVU:
 713                                         overlay_midi = 0;
 714                                         points.insert (std::pair<float,string>(-17.0f, "+3"));
 715                                         points.insert (std::pair<float,string>(-18.0f, "+2"));
 716                                         points.insert (std::pair<float,string>(-19.0f, "+1"));
 717                                         points.insert (std::pair<float,string>(-20.0f, " 0"));
 718                                         points.insert (std::pair<float,string>(-21.0f, "-1"));
 719                                         points.insert (std::pair<float,string>(-22.0f, "-2"));
 720                                         points.insert (std::pair<float,string>(-23.0f, "-3"));
 721                                         points.insert (std::pair<float,string>(-25.0f, "-5"));
 722                                         points.insert (std::pair<float,string>(-27.0f, "-7"));
 723                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 724                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 725                                         break;
 726                         }
 727                         break;
 728                 case DataType::MIDI:
 729                         layout->set_attributes (midi_font_attributes);
 730                         if (types.size() == 1) {
 731                                 points.insert (std::pair<float,string>(  0, "0"));
 732                                 points.insert (std::pair<float,string>( 16,  "16"));
 733                                 points.insert (std::pair<float,string>( 32,  "32"));
 734                                 points.insert (std::pair<float,string>( 48,  "48"));
 735                                 points.insert (std::pair<float,string>( 64,  "64"));
 736                                 points.insert (std::pair<float,string>( 80,  "80"));
 737                                 points.insert (std::pair<float,string>( 96,  "96"));
 738                                 points.insert (std::pair<float,string>(100, "100"));
 739                                 points.insert (std::pair<float,string>(112, "112"));
 740                         } else {
 741                                 switch (overlay_midi) {
 742                                         case 1:
 743                                                 /* labels that don't overlay with dBFS */
 744                                                 points.insert (std::pair<float,string>(  0, "0"));
 745                                                 points.insert (std::pair<float,string>( 24, "24"));
 746                                                 points.insert (std::pair<float,string>( 48, "48"));
 747                                                 points.insert (std::pair<float,string>( 72, "72"));
 748                                                 points.insert (std::pair<float,string>(127, "127"));
 749                                                 break;
 750                                         case 2:
 751                                                 /* labels that don't overlay with DIN */
 752                                                 points.insert (std::pair<float,string>(  0, "0"));
 753                                                 points.insert (std::pair<float,string>( 16,  "16"));
 754                                                 points.insert (std::pair<float,string>( 40,  "40"));
 755                                                 points.insert (std::pair<float,string>( 64,  "64"));
 756                                                 points.insert (std::pair<float,string>(112, "112"));
 757                                                 points.insert (std::pair<float,string>(127, "127"));
 758                                                 break;
 759                                         case 3:
 760                                                 /* labels that don't overlay with BBC nor EBU*/
 761                                                 points.insert (std::pair<float,string>(  0, "0"));
 762                                                 points.insert (std::pair<float,string>( 16, "16"));
 763                                                 points.insert (std::pair<float,string>( 56, "56"));
 764                                                 points.insert (std::pair<float,string>( 72, "72"));
 765                                                 points.insert (std::pair<float,string>(112, "112"));
 766                                                 points.insert (std::pair<float,string>(127, "127"));
 767                                         default:
 768                                                 break;
 769                                 }
 770                         }
 771                         break;
 772                 }
 773
 774                 gint pos;
 775
 776                 for (std::map<float,string>::const_iterator j = points.begin(); j != points.end(); ++j) {
 777                         float fraction = 0;
 778                         bool align_center = background; // this is true for meterbridge meters w/ fixed background
 779                         switch (*i) {
 780                                 case DataType::AUDIO:
 781                                         fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 782
 783                                         pos = height - (gint) floor (height * fraction);
 784                                         pos = max (pos, 1);
 785                                         if (tickleft) {
 786                                                 cairo_move_to(cr, width-1.5, pos + .5);
 787                                                 cairo_line_to(cr, width, pos + .5);
 788                                                 cairo_stroke (cr);
 789                                         } else if (tickright) {
 790                                                 cairo_move_to(cr, 0, pos + .5);
 791                                                 cairo_line_to(cr, 1.5, pos + .5);
 792                                                 cairo_stroke (cr);
 793                                         }
 794                                         break;
 795
 796                                 case DataType::MIDI:
 797                                         align_center = false; // don't bleed into legend
 798                                         fraction = (j->first) / 127.0;
 799                                         pos = 1 + height - (gint) rintf (height * fraction);
 800                                         pos = min (pos, height);
 801                                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 802                                         if (tickleft) {
 803                                                 cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
 804                                                 cairo_fill(cr);
 805                                         } else if (tickright) {
 806                                                 cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 807                                                 cairo_fill(cr);
 808                                         }
 809                                         break;
 810                         }
 811
 812                         layout->set_text(j->second.c_str());
 813
 814                         int tw, th;
 815                         layout->get_pixel_size(tw, th);
 816
 817                         int p = pos - (th / 2) - 1;
 818                         p = min (p, height - th);
 819                         p = max (p, 0);
 820
 821                         if (align_center) {
 822                                 cairo_move_to (cr, (width-tw)/2.0, p);
 823                         } else {
 824                                 cairo_move_to (cr, width-3-tw, p);
 825                         }
 826
 827                         cairo_set_line_width(cr, 0.12);
 828                         cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
 829                         pango_cairo_layout_path(cr, layout->gobj());
 830                         cairo_stroke_preserve (cr);
 831                         cairo_set_line_width(cr, 1.0);
 832
 833                         if ((*i) == DataType::AUDIO) {
 834                                 mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 835                         } else {
 836                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 837                         }
 838
 839                         pango_cairo_show_layout (cr, layout->gobj());
 840                         cairo_new_path(cr);
 841                 }
 842         }
 843
 844         // add legend
 845         if (types.size() == 1 || overlay_midi == 0) {
 846                 int tw, th;
 847                 layout->set_attributes (unit_font_attributes);
 848                 switch (types.at(0)) {
 849                         case DataType::AUDIO:
 850                                 switch (type) {
 851                                         case MeterK20:
 852                                                 layout->set_text("K20");
 853                                                 break;
 854                                         case MeterK14:
 855                                                 layout->set_text("K14");
 856                                                 break;
 857                                         default:
 858                                         case MeterPeak:
 859                                         case MeterKrms:
 860                                                 layout->set_text("dBFS");
 861                                                 break;
 862                                         case MeterIEC2EBU:
 863                                                 layout->set_text("EBU");
 864                                                 break;
 865                                         case MeterIEC2BBC:
 866                                                 layout->set_text("BBC");
 867                                                 break;
 868                                         case MeterIEC1DIN:
 869                                                 layout->set_text("DIN");
 870                                                 break;
 871                                         case MeterIEC1NOR:
 872                                                 layout->set_text("NOR");
 873                                                 break;
 874                                         case MeterVU:
 875                                                 layout->set_text("VU");
 876                                                 break;
 877                                 }
 878                                 layout->get_pixel_size(tw, th);
 879                                 break;
 880                         case DataType::MIDI:
 881                                 layout->set_text("mid");
 882                                 layout->get_pixel_size(tw, th);
 883                                 break;
 884                 }
 885                 if (!background) {
 886                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 887                 }
 888                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 889                 if (tickleft) {
 890                         cairo_move_to (cr, width - 2 - tw, height - th - 0.5);
 891                 } else {
 892                         cairo_move_to (cr, 2, height - th - 0.5);
 893                 }
 894                 pango_cairo_show_layout (cr, layout->gobj());
 895         }
 896
 897         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 898
 899         cairo_destroy (cr);
 900         cairo_surface_destroy (surface);
 901
 902         return pattern;
 903 }
 904
 905 gint
 906 ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
 907 {
 908         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 909         cairo_t* cr;
 910
 911         cr = gdk_cairo_create (win->gobj());
 912
 913         /* clip to expose area */
 914
 915         gdk_cairo_rectangle (cr, &ev->area);
 916         cairo_clip (cr);
 917
 918         cairo_pattern_t* pattern;
 919         const MeterMatricsMapKey key (mta->get_name(), type, types_to_bit(types));
 920         MetricPatternMap::iterator i = ticks_patterns.find (key);
 921
 922         if (i == ticks_patterns.end()) {
 923                 pattern = meter_render_ticks (*mta, type, types);
 924                 ticks_patterns[key] = pattern;
 925         } else {
 926                 pattern = i->second;
 927         }
 928
 929         cairo_move_to (cr, 0, 0);
 930         cairo_set_source (cr, pattern);
 931
 932         gint width, height;
 933         win->get_size (width, height);
 934
 935         cairo_rectangle (cr, 0, 0, width, height);
 936         cairo_fill (cr);
 937
 938         cairo_destroy (cr);
 939
 940         return true;
 941 }
 942
 943 gint
 944 ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
 945 {
 946         Glib::RefPtr<Gdk::Window> win (mma->get_window());
 947         cairo_t* cr;
 948
 949         cr = gdk_cairo_create (win->gobj());
 950
 951         /* clip to expose area */
 952
 953         gdk_cairo_rectangle (cr, &ev->area);
 954         cairo_clip (cr);
 955
 956         cairo_pattern_t* pattern;
 957         const MeterMatricsMapKey key (mma->get_name(), type, types_to_bit(types));
 958         MetricPatternMap::iterator i = metric_patterns.find (key);
 959
 960         if (i == metric_patterns.end()) {
 961                 pattern = meter_render_metrics (*mma, type, types);
 962                 metric_patterns[key] = pattern;
 963         } else {
 964                 pattern = i->second;
 965         }
 966
 967         cairo_move_to (cr, 0, 0);
 968         cairo_set_source (cr, pattern);
 969
 970         gint width, height;
 971         win->get_size (width, height);
 972
 973         cairo_rectangle (cr, 0, 0, width, height);
 974         cairo_fill (cr);
 975
 976         cairo_destroy (cr);
 977
 978         return true;
 979 }
 980
 981 void
 982 ArdourMeter::meter_clear_pattern_cache(int which) {
 983         MetricPatternMap::iterator i = metric_patterns.begin();
 984         MetricPatternMap::iterator j = ticks_patterns.begin();
 985
 986         while (i != metric_patterns.end()) {
 987                 int m = 4;
 988                 MeterMatricsMapKey const * const key = &(i->first);
 989                 std::string n = key->_n;
 990                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 991                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 992                 if (which & m) {
 993                         cairo_pattern_destroy(i->second);
 994                         metric_patterns.erase(i++);
 995                 } else {
 996                         ++i;
 997                 }
 998         }
 999
1000         while (j != ticks_patterns.end()) {
1001                 int m = 4;
1002                 MeterMatricsMapKey const * const key = &(j->first);
1003                 std::string n = key->_n;
1004                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
1005                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1006                 if (which & m) {
1007                         cairo_pattern_destroy(j->second);
1008                         ticks_patterns.erase(j++);
1009                 } else {
1010                         ++j;
1011                 }
1012         }
1013         RedrawMetrics();
1014 }