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                 case MeterIEC2EBU:
 142                         fraction = meter_deflect_ppm(val);
 143                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 144                         break;
 145                 case MeterIEC1NOR:
 146                         fraction = meter_deflect_nordic(val);
 147 #if 0
 148                         if (val == -18.0) {
 149                                 cairo_set_source_rgb (cr,
 150                                                 UINT_RGBA_R_FLT(peakcolor),
 151                                                 UINT_RGBA_G_FLT(peakcolor),
 152                                                 UINT_RGBA_B_FLT(peakcolor));
 153                         } else {
 154                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 155                         }
 156 #else
 157                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 158 #endif
 159                         break;
 160                 case MeterIEC1DIN:
 161                         fraction = meter_deflect_din(val);
 162                         if (val == -9.0 || val == -15 || val == -18) {
 163                                 cairo_set_source_rgb (cr,
 164                                                 UINT_RGBA_R_FLT(peakcolor),
 165                                                 UINT_RGBA_G_FLT(peakcolor),
 166                                                 UINT_RGBA_B_FLT(peakcolor));
 167                         } else {
 168                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 169                         }
 170                         break;
 171                 case MeterVU:
 172                         fraction = meter_deflect_vu(val);
 173                         if (val >= -20.0) {
 174                                 cairo_set_source_rgb (cr,
 175                                                 UINT_RGBA_R_FLT(peakcolor),
 176                                                 UINT_RGBA_G_FLT(peakcolor),
 177                                                 UINT_RGBA_B_FLT(peakcolor));
 178                         } else {
 179                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 180                         }
 181                         break;
 182                 case MeterK20:
 183                         fraction = meter_deflect_k (val, 20);
 184                         if (val >= -16.0) {
 185                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 186                         } else if (val >= -20.0) {
 187                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 188                         } else {
 189                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 190                         }
 191                         break;
 192                 case MeterK14:
 193                         if (val >= -10.0) {
 194                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 195                         } else if (val >= -14.0) {
 196                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 197                         } else {
 198                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 199                         }
 200                         fraction = meter_deflect_k (val, 14);
 201                         break;
 202         }
 203         return fraction;
 204 }
 205
 206 static void set_bg_color(Gtk::Widget& w, cairo_t* cr, MeterType type) {
 207         float r,g,b;
 208         switch(type) {
 209                 case MeterVU:
 210                         if (rgba_p_from_style("meterstripVU", &r, &g, &b, "bg")) {
 211                                 cairo_set_source_rgb (cr, r, g, b);
 212                         } else {
 213                                 cairo_set_source_rgb (cr, 1.0, 1.0, 0.85);
 214                         }
 215                         break;
 216                 case MeterIEC1DIN:
 217                 case MeterIEC1NOR:
 218                 case MeterIEC2BBC:
 219                 case MeterIEC2EBU:
 220                 case MeterK14:
 221                 case MeterK20:
 222                         if (rgba_p_from_style("meterstripPPM", &r, &g, &b, "bg")) {
 223                                 cairo_set_source_rgb (cr, r, g, b);
 224                         } else {
 225                                 cairo_set_source_rgb (cr, 0.1, 0.1, 0.1);
 226                         }
 227                         break;
 228                 default:
 229                         {
 230                         Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 231                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 232                         }
 233                         break;
 234         }
 235 }
 236
 237 static void set_fg_color(Gtk::Widget& w, MeterType type, Gdk::Color * c) {
 238         float r,g,b;
 239         switch(type) {
 240                 case MeterVU:
 241                         if (rgba_p_from_style("meterstripVU", &r, &g, &b)) {
 242                                 c->set_rgb_p(r, g, b);
 243                         } else {
 244                                 c->set_rgb_p(0.0, 0.0, 0.0);
 245                         }
 246                         break;
 247                 default:
 248                         if (rgba_p_from_style("meterstripPPM", &r, &g, &b)) {
 249                                 c->set_rgb_p(r, g, b);
 250                         } else {
 251                                 c->set_rgb_p(1.0, 1.0, 1.0);
 252                         }
 253                         break;
 254         }
 255 }
 256
 257 static cairo_pattern_t*
 258 meter_render_ticks (Gtk::Widget& w, MeterType type, vector<ARDOUR::DataType> types)
 259 {
 260         Glib::RefPtr<Gdk::Window> win (w.get_window());
 261
 262         bool background;
 263         bool tickleft, tickright;
 264         gint width, height;
 265         win->get_size (width, height);
 266         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 267         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 268         background = types.size() == 0 || tickleft || tickright;
 269
 270         int box_l, box_r;
 271         if (tickleft) {
 272                 box_l = 2; box_r = 3;
 273         } else if (tickright) {
 274                 box_l = 0; box_r = 1;
 275         } else {
 276                 box_l = 0; box_r = 3;
 277         }
 278
 279         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 280         cairo_t* cr = cairo_create (surface);
 281
 282         cairo_move_to (cr, 0, 0);
 283         cairo_rectangle (cr, 0, 0, width, height);
 284
 285         if (background) {
 286                 /* meterbridge */
 287                 set_bg_color(w, cr, type);
 288         } else {
 289                 /* mixer */
 290                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 291                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 292         }
 293         cairo_fill (cr);
 294
 295         height = min(max_pattern_metric_size, height);
 296         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 297
 298         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 299
 300                 Gdk::Color c;
 301                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 302                         /* we're overlaying more than 1 set of marks, so use different colours */
 303                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 304                 } else if (background) {
 305                         set_fg_color(w, type, &c);
 306                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 307                 } else {
 308                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 309                 }
 310                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 311
 312                 // tick-maker position in dBFS, line-thickness
 313                 std::map<float,float> points;
 314
 315 #define DFL_H(fract) (height - floor (height * (fract)) + .5)
 316
 317                 switch (*i) {
 318                 case DataType::AUDIO:
 319
 320                         switch (type) {
 321                                 case MeterK14:
 322                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 323                                         points.insert (std::pair<float,float>(-44.0f, 1.0));
 324                                         points.insert (std::pair<float,float>(-34.0f, 1.0));
 325                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 326                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 327                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 328                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 329                                         points.insert (std::pair<float,float>(-11.0f, 1.0));
 330                                         points.insert (std::pair<float,float>( -8.0f, 1.0));
 331                                         points.insert (std::pair<float,float>( -4.0f, 1.0));
 332                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 333                                         break;
 334                                 case MeterK20:
 335                                         points.insert (std::pair<float,float>(-60.0f, 1.0));
 336                                         points.insert (std::pair<float,float>(-50.0f, 1.0));
 337                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 338                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 339                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 340                                         points.insert (std::pair<float,float>(-23.0f, 1.0));
 341                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 342                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 343                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 344                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 345                                         points.insert (std::pair<float,float>( -5.0f, 1.0));
 346                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 347                                         break;
 348                                 case MeterIEC2EBU:
 349                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 350                                         points.insert (std::pair<float,float>(-28.0f, 0.5));
 351                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 352                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 353                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 354                                         points.insert (std::pair<float,float>(-20.0f, 0.5));
 355                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 356                                         points.insert (std::pair<float,float>(-16.0f, 0.5));
 357                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 358                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 359                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 360                                         points.insert (std::pair<float,float>( -9.0f, 0.8));
 361                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 362                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 363                                         break;
 364                                 case MeterIEC2BBC:
 365                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 366                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 367                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 368                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 369                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 370                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 371                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 372                                         break;
 373                                 case MeterIEC1NOR:
 374                                         points.insert (std::pair<float,float>(-60.0f, 1.0)); // -42
 375                                         points.insert (std::pair<float,float>(-57.0f, 0.5));
 376                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 377                                         points.insert (std::pair<float,float>(-51.0f, 0.5));
 378                                         points.insert (std::pair<float,float>(-48.0f, 1.0));
 379                                         points.insert (std::pair<float,float>(-45.0f, 0.5));
 380                                         points.insert (std::pair<float,float>(-42.0f, 1.0));
 381                                         points.insert (std::pair<float,float>(-39.0f, 0.5));
 382                                         points.insert (std::pair<float,float>(-36.0f, 1.0));
 383
 384                                         points.insert (std::pair<float,float>(-33.0f, 0.5));
 385                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 386                                         points.insert (std::pair<float,float>(-27.0f, 0.5));
 387                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 388                                         points.insert (std::pair<float,float>(-21.0f, 0.5));
 389
 390                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 391                                         points.insert (std::pair<float,float>(-15.0f, 0.5));
 392                                         points.insert (std::pair<float,float>(-12.0f, 1.0));
 393                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 394                                         points.insert (std::pair<float,float>( -6.0f, 0.5));
 395                                         cairo_set_source_rgba (cr, .8, 0, 0, 0.8);
 396                                         cairo_rectangle (cr,
 397                                                         box_l, DFL_H(meter_deflect_nordic( -6)),
 398                                                         box_r, DFL_H(meter_deflect_nordic(-12)));
 399                                         cairo_fill (cr);
 400                                         break;
 401                                 case MeterIEC1DIN:
 402                                         points.insert (std::pair<float,float>( -3.0f, 0.5)); // "200%"
 403                                         points.insert (std::pair<float,float>( -4.0f, 1.0));
 404                                         points.insert (std::pair<float,float>( -5.0f, 0.5));
 405                                         points.insert (std::pair<float,float>( -6.0f, 0.5));
 406                                         points.insert (std::pair<float,float>( -7.0f, 0.5));
 407                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 408                                         points.insert (std::pair<float,float>( -9.0f, 1.0)); // "100%"
 409                                         points.insert (std::pair<float,float>(-10.0f, 0.5));
 410                                         points.insert (std::pair<float,float>(-11.0f, 0.5));
 411                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 412                                         points.insert (std::pair<float,float>(-13.0f, 0.5));
 413                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 414                                         points.insert (std::pair<float,float>(-15.0f, 0.8)); // "50%"
 415                                         points.insert (std::pair<float,float>(-18.0f, 0.8)); // "-9"
 416                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 417                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 418                                         points.insert (std::pair<float,float>(-29.0f, 1.0)); // "-20", "10%"
 419                                         points.insert (std::pair<float,float>(-34.0f, 0.5)); // -25
 420                                         //points.insert (std::pair<float,float>(-35.0f, 0.5)); // "5%" " -20"
 421                                         points.insert (std::pair<float,float>(-39.0f, 1.0));
 422                                         points.insert (std::pair<float,float>(-49.0f, 1.0));
 423                                         points.insert (std::pair<float,float>(-54.0f, 0.5));
 424                                         points.insert (std::pair<float,float>(-59.0f, 1.0));
 425                                         cairo_set_source_rgba (cr, .8, 0, 0, 0.8);
 426                                         cairo_rectangle (cr,
 427                                                         box_l, DFL_H(meter_deflect_din(0)),
 428                                                         box_r, DFL_H(meter_deflect_din(-9.0)));
 429                                         cairo_fill (cr);
 430                                         break;
 431                                 case MeterVU:
 432                                         points.insert (std::pair<float,float>(-17.0f, 1.0)); //+3 VU
 433                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 434                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 435                                         points.insert (std::pair<float,float>(-19.5f, 0.5));
 436                                         points.insert (std::pair<float,float>(-20.0f, 1.0)); // 0 VU
 437                                         points.insert (std::pair<float,float>(-20.5f, 0.5));
 438                                         points.insert (std::pair<float,float>(-21.0f, 1.0));
 439                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 440                                         points.insert (std::pair<float,float>(-23.0f, 1.0)); //-3 VU
 441                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 442                                         points.insert (std::pair<float,float>(-25.0f, 1.0));
 443                                         points.insert (std::pair<float,float>(-26.0f, 0.5));
 444                                         points.insert (std::pair<float,float>(-27.0f, 1.0)); //-7 VU
 445                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 446                                         points.insert (std::pair<float,float>(-35.0f, 0.5));
 447                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 448                                         // red-box
 449                                         cairo_set_source_rgba (cr, .8, 0, 0, 0.8);
 450                                         cairo_rectangle (cr,
 451                                                         box_l, DFL_H(meter_deflect_vu(-16)),
 452                                                         box_r, DFL_H(meter_deflect_vu(-20)));
 453                                         cairo_fill (cr);
 454                                         break;
 455
 456                                 default:
 457                                         points.insert (std::pair<float,float>(-60, 0.5));
 458                                         points.insert (std::pair<float,float>(-50, 1.0));
 459                                         points.insert (std::pair<float,float>(-40, 1.0));
 460                                         points.insert (std::pair<float,float>(-30, 1.0));
 461                                         if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 462                                                 points.insert (std::pair<float,float>(-24, 1.0));
 463                                         } else {
 464                                                 points.insert (std::pair<float,float>(-25, 1.0));
 465                                         }
 466                                         points.insert (std::pair<float,float>(-20, 1.0));
 467
 468                                         points.insert (std::pair<float,float>(-19, 0.5));
 469                                         points.insert (std::pair<float,float>(-18, 1.0));
 470                                         points.insert (std::pair<float,float>(-17, 0.5));
 471                                         points.insert (std::pair<float,float>(-16, 0.5));
 472                                         points.insert (std::pair<float,float>(-15, 1.0));
 473
 474                                         points.insert (std::pair<float,float>(-14, 0.5));
 475                                         points.insert (std::pair<float,float>(-13, 0.5));
 476                                         points.insert (std::pair<float,float>(-12, 0.5));
 477                                         points.insert (std::pair<float,float>(-11, 0.5));
 478                                         points.insert (std::pair<float,float>(-10, 1.0));
 479
 480                                         points.insert (std::pair<float,float>( -9, 1.0));
 481                                         points.insert (std::pair<float,float>( -8, 0.5));
 482                                         points.insert (std::pair<float,float>( -7, 0.5));
 483                                         points.insert (std::pair<float,float>( -6, 0.5));
 484                                         points.insert (std::pair<float,float>( -5, 1.0));
 485                                         points.insert (std::pair<float,float>( -4, 0.5));
 486                                         points.insert (std::pair<float,float>( -3, 1.0));
 487                                         points.insert (std::pair<float,float>( -2, 0.5));
 488                                         points.insert (std::pair<float,float>( -1, 0.5));
 489
 490                                         points.insert (std::pair<float,float>(  0, 1.0));
 491                                         points.insert (std::pair<float,float>(  1, 0.5));
 492                                         points.insert (std::pair<float,float>(  2, 0.5));
 493                                         points.insert (std::pair<float,float>(  3, 1.0));
 494                                         points.insert (std::pair<float,float>(  4, 0.5));
 495                                         points.insert (std::pair<float,float>(  5, 0.5));
 496                                         break;
 497                         }
 498                         break;
 499
 500                 case DataType::MIDI:
 501                         points.insert (std::pair<float,float>(  0, 1.0));
 502                         points.insert (std::pair<float,float>( 16, 0.5));
 503                         points.insert (std::pair<float,float>( 32, 0.5));
 504                         points.insert (std::pair<float,float>( 48, 0.5));
 505                         points.insert (std::pair<float,float>( 64, 1.0));
 506                         points.insert (std::pair<float,float>( 80, 0.5));
 507                         points.insert (std::pair<float,float>( 96, 0.5));
 508                         points.insert (std::pair<float,float>(100, 1.0));
 509                         points.insert (std::pair<float,float>(112, 0.5));
 510                         points.insert (std::pair<float,float>(127, 1.0));
 511                         break;
 512                 }
 513
 514                 for (std::map<float,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 515                         cairo_set_line_width (cr, (j->second));
 516
 517                         float fraction = 0;
 518                         gint pos;
 519
 520                         switch (*i) {
 521                         case DataType::AUDIO:
 522                                 fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 523
 524                                 pos = height - (gint) floor (height * fraction);
 525                                 pos = max (pos, 1);
 526                                 cairo_move_to(cr, 0, pos + .5);
 527                                 cairo_line_to(cr, 3, pos + .5);
 528                                 cairo_stroke (cr);
 529                                 break;
 530                         case DataType::MIDI:
 531                                 fraction = (j->first) / 127.0;
 532                                 pos = 1 + height - (gint) floor (height * fraction);
 533                                 pos = min (pos, height);
 534                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 535                                 cairo_fill(cr);
 536                                 break;
 537                         }
 538                 }
 539         }
 540
 541         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 542
 543         cairo_destroy (cr);
 544         cairo_surface_destroy (surface);
 545
 546         return pattern;
 547 }
 548
 549 static cairo_pattern_t*
 550 meter_render_metrics (Gtk::Widget& w, MeterType type, vector<DataType> types)
 551 {
 552         Glib::RefPtr<Gdk::Window> win (w.get_window());
 553
 554         bool tickleft, tickright;
 555         bool background;
 556         int overlay_midi = 1;
 557         gint width, height;
 558         win->get_size (width, height);
 559
 560         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 561         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 562         background = types.size() == 0 || tickleft || tickright;
 563
 564         if (!tickleft && !tickright) {
 565                 tickright = true;
 566         }
 567
 568         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 569         cairo_t* cr = cairo_create (surface);
 570         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 571
 572         Pango::AttrList audio_font_attributes;
 573         Pango::AttrList midi_font_attributes;
 574         Pango::AttrList unit_font_attributes;
 575
 576         Pango::AttrFontDesc* font_attr;
 577         Pango::FontDescription font;
 578
 579         font = Pango::FontDescription ("ArdourMono");
 580         double fixfontsize = 81920.0 / (double) ARDOUR::Config->get_font_scale();
 581
 582         font.set_weight (Pango::WEIGHT_NORMAL);
 583         font.set_size (9.0 * PANGO_SCALE * fixfontsize);
 584         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 585         audio_font_attributes.change (*font_attr);
 586         delete font_attr;
 587
 588         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 589         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 590         font.set_size (8.0 * PANGO_SCALE * fixfontsize);
 591         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 592         midi_font_attributes.change (*font_attr);
 593         delete font_attr;
 594
 595         font.set_size (6.0 * PANGO_SCALE * fixfontsize);
 596         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 597         unit_font_attributes.change (*font_attr);
 598         delete font_attr;
 599
 600         cairo_move_to (cr, 0, 0);
 601         cairo_rectangle (cr, 0, 0, width, height);
 602         if (background) {
 603                 /* meterbridge */
 604                 set_bg_color(w, cr, type);
 605         } else {
 606                 /* mixer */
 607                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 608                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 609         }
 610         cairo_fill (cr);
 611
 612         cairo_set_line_width (cr, 1.0);
 613
 614         height = min(max_pattern_metric_size, height);
 615         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 616         Gdk::Color c; // default text color
 617
 618         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 619
 620                 if (types.size() > 1 && (*i) == DataType::MIDI && overlay_midi == 0) {
 621                         continue;
 622                 }
 623
 624                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 625                         /* we're overlaying more than 1 set of marks, so use different colours */
 626                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 627                 } else if (background) {
 628                         set_fg_color(w, type, &c);
 629                 } else {
 630                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 631                 }
 632
 633                 std::map<float,string> points; // map: label-pos in dBFS, label-text
 634
 635                 switch (*i) {
 636                 case DataType::AUDIO:
 637                         layout->set_attributes (audio_font_attributes);
 638                         switch (type) {
 639                                 case MeterK14:
 640                                         overlay_midi = 0;
 641                                         points.insert (std::pair<float,string>(-54.0f, "-40"));
 642                                         points.insert (std::pair<float,string>(-44.0f, "-30"));
 643                                         points.insert (std::pair<float,string>(-34.0f, "-20"));
 644                                         points.insert (std::pair<float,string>(-24.0f, "-10"));
 645                                         points.insert (std::pair<float,string>(-20.0f,  "-6"));
 646                                         points.insert (std::pair<float,string>(-17.0f,  "-3"));
 647                                         points.insert (std::pair<float,string>(-14.0f,  " 0"));
 648                                         points.insert (std::pair<float,string>(-11.0f,  "+3"));
 649                                         points.insert (std::pair<float,string>( -8.0f,  "+6"));
 650                                         points.insert (std::pair<float,string>( -4.0f, "+10"));
 651                                         points.insert (std::pair<float,string>(  0.0f, "+14"));
 652                                         break;
 653                                 case MeterK20:
 654                                         overlay_midi = 0;
 655                                         points.insert (std::pair<float,string>(-60.0f, "-40"));
 656                                         points.insert (std::pair<float,string>(-50.0f, "-30"));
 657                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 658                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 659                                         points.insert (std::pair<float,string>(-26.0f,  "-6"));
 660                                         points.insert (std::pair<float,string>(-23.0f,  "-3"));
 661                                         points.insert (std::pair<float,string>(-20.0f,  " 0"));
 662                                         points.insert (std::pair<float,string>(-17.0f,  "+3"));
 663                                         points.insert (std::pair<float,string>(-14.0f,  "+6"));
 664                                         points.insert (std::pair<float,string>(-10.0f, "+10"));
 665                                         points.insert (std::pair<float,string>( -5.0f, "+15"));
 666                                         points.insert (std::pair<float,string>(  0.0f, "+20"));
 667                                         break;
 668                                 default:
 669                                 case MeterPeak:
 670                                 case MeterKrms:
 671                                         points.insert (std::pair<float,string>(-50.0f, "-50"));
 672                                         points.insert (std::pair<float,string>(-40.0f, "-40"));
 673                                         points.insert (std::pair<float,string>(-30.0f, "-30"));
 674                                         points.insert (std::pair<float,string>(-20.0f, "-20"));
 675                                         if (types.size() == 1) {
 676                                                 if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 677                                                         points.insert (std::pair<float,string>(-24.0f, "-24"));
 678                                                 } else {
 679                                                         points.insert (std::pair<float,string>(-25.0f, "-25"));
 680                                                 }
 681                                                 points.insert (std::pair<float,string>(-15.0f, "-15"));
 682                                         }
 683                                         points.insert (std::pair<float,string>(-18.0f, "-18"));
 684                                         points.insert (std::pair<float,string>(-10.0f, "-10"));
 685                                         points.insert (std::pair<float,string>( -5.0f, "-5"));
 686                                         points.insert (std::pair<float,string>( -3.0f, "-3"));
 687                                         points.insert (std::pair<float,string>(  0.0f, "+0"));
 688                                         points.insert (std::pair<float,string>(  3.0f, "+3"));
 689                                         break;
 690
 691                                 case MeterIEC2EBU:
 692                                         overlay_midi = 3;
 693                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 694                                         points.insert (std::pair<float,string>(-26.0f, "-8"));
 695                                         points.insert (std::pair<float,string>(-22.0f, "-4"));
 696                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 697                                         points.insert (std::pair<float,string>(-14.0f, "+4"));
 698                                         points.insert (std::pair<float,string>(-10.0f, "+8"));
 699                                         points.insert (std::pair<float,string>( -6.0f, "+12"));
 700                                         break;
 701
 702                                 case MeterIEC2BBC:
 703                                         overlay_midi = 3;
 704                                         points.insert (std::pair<float,string>(-30.0f, " 1 "));
 705                                         points.insert (std::pair<float,string>(-26.0f, " 2 "));
 706                                         points.insert (std::pair<float,string>(-22.0f, " 3 "));
 707                                         points.insert (std::pair<float,string>(-18.0f, " 4 "));
 708                                         points.insert (std::pair<float,string>(-14.0f, " 5 "));
 709                                         points.insert (std::pair<float,string>(-10.0f, " 6 "));
 710                                         points.insert (std::pair<float,string>( -6.0f, " 7 "));
 711                                         break;
 712
 713                                 case MeterIEC1NOR:
 714                                         overlay_midi = 0;
 715                                         //points.insert (std::pair<float,string>(-60.0f, "-42"));
 716                                         points.insert (std::pair<float,string>(-54.0f, "-36"));
 717                                         points.insert (std::pair<float,string>(-48.0f, "-30"));
 718                                         points.insert (std::pair<float,string>(-42.0f, "-24"));
 719                                         points.insert (std::pair<float,string>(-36.0f, "-18"));
 720
 721                                         //points.insert (std::pair<float,string>(-33.0f, "-15"));
 722                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 723                                         //points.insert (std::pair<float,string>(-27.0f, "-9"));
 724                                         points.insert (std::pair<float,string>(-24.0f, "-6"));
 725                                         //points.insert (std::pair<float,string>(-21.0f, "-3"));
 726
 727                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 728                                         //points.insert (std::pair<float,string>(-15.0f, "+3"));
 729                                         points.insert (std::pair<float,string>(-12.0f, "+6"));
 730                                         points.insert (std::pair<float,string>( -9.0f, "+9"));
 731                                         //points.insert (std::pair<float,string>( -6.0f, "+12"));
 732                                         break;
 733
 734                                 case MeterIEC1DIN:
 735                                         overlay_midi = 2;
 736                                         //points.insert (std::pair<float,string>( -3.0f, "200%"));
 737                                         points.insert (std::pair<float,string>( -4.0f, "+5"));
 738                                         points.insert (std::pair<float,string>( -9.0f, "0")); // "100%";
 739                                         points.insert (std::pair<float,string>(-14.0f, "-5"));
 740                                         //points.insert (std::pair<float,string>(-15.0f, "50%"));
 741                                         //points.insert (std::pair<float,string>(-18.0f, "-9"));
 742                                         points.insert (std::pair<float,string>(-19.0f, "-10")); // "30%"
 743                                         points.insert (std::pair<float,string>(-29.0f, "-20")); // "10%"
 744                                         //points.insert (std::pair<float,string>(-35.0f, "5%")); // "5%"
 745                                         points.insert (std::pair<float,string>(-39.0f, "-30"));
 746                                         //points.insert (std::pair<float,string>(-49.0f, "1%"));
 747                                         points.insert (std::pair<float,string>(-59.0f, "-50"));
 748                                         break;
 749
 750                                 case MeterVU:
 751                                         overlay_midi = 0;
 752                                         points.insert (std::pair<float,string>(-17.0f, "+3"));
 753                                         points.insert (std::pair<float,string>(-18.0f, "+2"));
 754                                         points.insert (std::pair<float,string>(-19.0f, "+1"));
 755                                         points.insert (std::pair<float,string>(-20.0f, " 0"));
 756                                         points.insert (std::pair<float,string>(-21.0f, "-1"));
 757                                         points.insert (std::pair<float,string>(-22.0f, "-2"));
 758                                         points.insert (std::pair<float,string>(-23.0f, "-3"));
 759                                         points.insert (std::pair<float,string>(-25.0f, "-5"));
 760                                         points.insert (std::pair<float,string>(-27.0f, "-7"));
 761                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 762                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 763                                         break;
 764                         }
 765                         break;
 766                 case DataType::MIDI:
 767                         layout->set_attributes (midi_font_attributes);
 768                         if (types.size() == 1) {
 769                                 points.insert (std::pair<float,string>(  0, "0"));
 770                                 points.insert (std::pair<float,string>( 16,  "16"));
 771                                 points.insert (std::pair<float,string>( 32,  "32"));
 772                                 points.insert (std::pair<float,string>( 48,  "48"));
 773                                 points.insert (std::pair<float,string>( 64,  "64"));
 774                                 points.insert (std::pair<float,string>( 80,  "80"));
 775                                 points.insert (std::pair<float,string>( 96,  "96"));
 776                                 points.insert (std::pair<float,string>(100, "100"));
 777                                 points.insert (std::pair<float,string>(112, "112"));
 778                         } else {
 779                                 switch (overlay_midi) {
 780                                         case 1:
 781                                                 /* labels that don't overlay with dBFS */
 782                                                 points.insert (std::pair<float,string>(  0, "0"));
 783                                                 points.insert (std::pair<float,string>( 24, "24"));
 784                                                 points.insert (std::pair<float,string>( 48, "48"));
 785                                                 points.insert (std::pair<float,string>( 72, "72"));
 786                                                 points.insert (std::pair<float,string>(127, "127"));
 787                                                 break;
 788                                         case 2:
 789                                                 /* labels that don't overlay with DIN */
 790                                                 points.insert (std::pair<float,string>(  0, "0"));
 791                                                 points.insert (std::pair<float,string>( 16,  "16"));
 792                                                 points.insert (std::pair<float,string>( 40,  "40"));
 793                                                 points.insert (std::pair<float,string>( 64,  "64"));
 794                                                 points.insert (std::pair<float,string>(112, "112"));
 795                                                 points.insert (std::pair<float,string>(127, "127"));
 796                                                 break;
 797                                         case 3:
 798                                                 /* labels that don't overlay with BBC nor EBU*/
 799                                                 points.insert (std::pair<float,string>(  0, "0"));
 800                                                 points.insert (std::pair<float,string>( 16, "16"));
 801                                                 points.insert (std::pair<float,string>( 56, "56"));
 802                                                 points.insert (std::pair<float,string>( 72, "72"));
 803                                                 points.insert (std::pair<float,string>(112, "112"));
 804                                                 points.insert (std::pair<float,string>(127, "127"));
 805                                         default:
 806                                                 break;
 807                                 }
 808                         }
 809                         break;
 810                 }
 811
 812                 gint pos;
 813
 814                 for (std::map<float,string>::const_iterator j = points.begin(); j != points.end(); ++j) {
 815                         float fraction = 0;
 816                         bool align_center = background; // this is true for meterbridge meters w/ fixed background
 817                         switch (*i) {
 818                                 case DataType::AUDIO:
 819                                         fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 820
 821                                         pos = height - (gint) floor (height * fraction);
 822                                         pos = max (pos, 1);
 823                                         if (tickleft) {
 824                                                 cairo_move_to(cr, width-1.5, pos + .5);
 825                                                 cairo_line_to(cr, width, pos + .5);
 826                                                 cairo_stroke (cr);
 827                                         } else if (tickright) {
 828                                                 cairo_move_to(cr, 0, pos + .5);
 829                                                 cairo_line_to(cr, 1.5, pos + .5);
 830                                                 cairo_stroke (cr);
 831                                         }
 832                                         break;
 833
 834                                 case DataType::MIDI:
 835                                         align_center = false; // don't bleed into legend
 836                                         fraction = (j->first) / 127.0;
 837                                         pos = 1 + height - (gint) rintf (height * fraction);
 838                                         pos = min (pos, height);
 839                                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 840                                         if (tickleft) {
 841                                                 cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
 842                                                 cairo_fill(cr);
 843                                         } else if (tickright) {
 844                                                 cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 845                                                 cairo_fill(cr);
 846                                         }
 847                                         break;
 848                         }
 849
 850                         layout->set_text(j->second.c_str());
 851
 852                         int tw, th;
 853                         layout->get_pixel_size(tw, th);
 854
 855                         int p = pos - (th / 2) - 1;
 856                         p = min (p, height - th);
 857                         p = max (p, 0);
 858
 859                         if (align_center) {
 860                                 cairo_move_to (cr, (width-tw)/2.0, p);
 861                         } else {
 862                                 cairo_move_to (cr, width-3-tw, p);
 863                         }
 864
 865                         cairo_set_line_width(cr, 0.12);
 866                         cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
 867                         pango_cairo_layout_path(cr, layout->gobj());
 868                         cairo_stroke_preserve (cr);
 869                         cairo_set_line_width(cr, 1.0);
 870
 871                         if ((*i) == DataType::AUDIO) {
 872                                 mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 873                         } else {
 874                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 875                         }
 876
 877                         pango_cairo_show_layout (cr, layout->gobj());
 878                         cairo_new_path(cr);
 879                 }
 880         }
 881
 882         // add legend
 883         if (types.size() == 1 || overlay_midi == 0) {
 884                 int tw, th;
 885                 layout->set_attributes (unit_font_attributes);
 886                 switch (types.at(0)) {
 887                         case DataType::AUDIO:
 888                                 switch (type) {
 889                                         case MeterK20:
 890                                                 layout->set_text("K20");
 891                                                 break;
 892                                         case MeterK14:
 893                                                 layout->set_text("K14");
 894                                                 break;
 895                                         default:
 896                                         case MeterPeak:
 897                                         case MeterKrms:
 898                                                 layout->set_text("dBFS");
 899                                                 break;
 900                                         case MeterIEC2EBU:
 901                                                 layout->set_text("EBU");
 902                                                 break;
 903                                         case MeterIEC2BBC:
 904                                                 layout->set_text("BBC");
 905                                                 break;
 906                                         case MeterIEC1DIN:
 907                                                 layout->set_text("DIN");
 908                                                 break;
 909                                         case MeterIEC1NOR:
 910                                                 layout->set_text("NOR");
 911                                                 break;
 912                                         case MeterVU:
 913                                                 layout->set_text("VU");
 914                                                 break;
 915                                 }
 916                                 layout->get_pixel_size(tw, th);
 917                                 break;
 918                         case DataType::MIDI:
 919                                 layout->set_text("mid");
 920                                 layout->get_pixel_size(tw, th);
 921                                 break;
 922                 }
 923                 if (!background) {
 924                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 925                 }
 926                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 927                 if (tickleft) {
 928                         cairo_move_to (cr, width - 2 - tw, height - th - 0.5);
 929                 } else {
 930                         cairo_move_to (cr, 2, height - th - 0.5);
 931                 }
 932                 pango_cairo_show_layout (cr, layout->gobj());
 933         }
 934
 935         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 936
 937         cairo_destroy (cr);
 938         cairo_surface_destroy (surface);
 939
 940         return pattern;
 941 }
 942
 943 gint
 944 ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
 945 {
 946         Glib::RefPtr<Gdk::Window> win (mta->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 (mta->get_name(), type, types_to_bit(types));
 958         MetricPatternMap::iterator i = ticks_patterns.find (key);
 959
 960         if (i == ticks_patterns.end()) {
 961                 pattern = meter_render_ticks (*mta, type, types);
 962                 ticks_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 gint
 982 ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
 983 {
 984         Glib::RefPtr<Gdk::Window> win (mma->get_window());
 985         cairo_t* cr;
 986
 987         cr = gdk_cairo_create (win->gobj());
 988
 989         /* clip to expose area */
 990
 991         gdk_cairo_rectangle (cr, &ev->area);
 992         cairo_clip (cr);
 993
 994         cairo_pattern_t* pattern;
 995         const MeterMatricsMapKey key (mma->get_name(), type, types_to_bit(types));
 996         MetricPatternMap::iterator i = metric_patterns.find (key);
 997
 998         if (i == metric_patterns.end()) {
 999                 pattern = meter_render_metrics (*mma, type, types);
1000                 metric_patterns[key] = pattern;
1001         } else {
1002                 pattern = i->second;
1003         }
1004
1005         cairo_move_to (cr, 0, 0);
1006         cairo_set_source (cr, pattern);
1007
1008         gint width, height;
1009         win->get_size (width, height);
1010
1011         cairo_rectangle (cr, 0, 0, width, height);
1012         cairo_fill (cr);
1013
1014         cairo_destroy (cr);
1015
1016         return true;
1017 }
1018
1019 void
1020 ArdourMeter::meter_clear_pattern_cache(int which) {
1021         MetricPatternMap::iterator i = metric_patterns.begin();
1022         MetricPatternMap::iterator j = ticks_patterns.begin();
1023
1024         while (i != metric_patterns.end()) {
1025                 int m = 4;
1026                 MeterMatricsMapKey const * const key = &(i->first);
1027                 std::string n = key->_n;
1028                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
1029                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1030                 if (which & m) {
1031                         cairo_pattern_destroy(i->second);
1032                         metric_patterns.erase(i++);
1033                 } else {
1034                         ++i;
1035                 }
1036         }
1037
1038         while (j != ticks_patterns.end()) {
1039                 int m = 4;
1040                 MeterMatricsMapKey const * const key = &(j->first);
1041                 std::string n = key->_n;
1042                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
1043                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1044                 if (which & m) {
1045                         cairo_pattern_destroy(j->second);
1046                         ticks_patterns.erase(j++);
1047                 } else {
1048                         ++j;
1049                 }
1050         }
1051         RedrawMetrics();
1052 }