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 ARDOUR_UI_UTILS;
  35 using namespace PBD;
  36 using namespace Gtk;
  37 using namespace Gtkmm2ext;
  38 using namespace std;
  39 using namespace ArdourMeter;
  40
  41 static const int max_pattern_metric_size = 1026;
  42
  43 /* signals used by meters */
  44
  45 sigc::signal<void> ArdourMeter::ResetAllPeakDisplays;
  46 sigc::signal<void,ARDOUR::Route*> ArdourMeter::ResetRoutePeakDisplays;
  47 sigc::signal<void,ARDOUR::RouteGroup*> ArdourMeter::ResetGroupPeakDisplays;
  48 sigc::signal<void> ArdourMeter::RedrawMetrics;
  49
  50 sigc::signal<void, int, ARDOUR::RouteGroup*, ARDOUR::MeterType> ArdourMeter::SetMeterTypeMulti;
  51
  52
  53 /* pattern cache */
  54
  55 struct MeterMatricsMapKey {
  56         MeterMatricsMapKey (std::string n, MeterType t, int dt)
  57                 : _n(n)
  58                 , _t(t)
  59                 , _dt(dt)
  60         {}
  61         inline bool operator<(const MeterMatricsMapKey& rhs) const {
  62                 return (_n < rhs._n) || (_n == rhs._n && _t < rhs._t) || (_n == rhs._n && _t == rhs._t && _dt < rhs._dt);
  63         }
  64         std::string _n;
  65         MeterType _t;
  66         int _dt;
  67 };
  68
  69 namespace ArdourMeter {
  70         typedef std::map<MeterMatricsMapKey, cairo_pattern_t*> MetricPatternMap;
  71 }
  72
  73 static ArdourMeter::MetricPatternMap ticks_patterns;
  74 static ArdourMeter::MetricPatternMap metric_patterns;
  75
  76
  77 const std::string
  78 ArdourMeter::meter_type_string (ARDOUR::MeterType mt)
  79 {
  80         switch (mt) {
  81                 case MeterPeak:
  82                         return _("Peak");
  83                         break;
  84                 case MeterKrms:
  85                         return _("RMS + Peak");
  86                         break;
  87                 case MeterIEC1DIN:
  88                         return _("IEC1/DIN");
  89                         break;
  90                 case MeterIEC1NOR:
  91                         return _("IEC1/Nordic");
  92                         break;
  93                 case MeterIEC2BBC:
  94                         return _("IEC2/BBC");
  95                         break;
  96                 case MeterIEC2EBU:
  97                         return _("IEC2/EBU");
  98                         break;
  99                 case MeterK20:
 100                         return _("K20");
 101                         break;
 102                 case MeterK14:
 103                         return _("K14");
 104                         break;
 105                 case MeterK12:
 106                         return _("K12");
 107                         break;
 108                 case MeterVU:
 109                         return _("VU");
 110                         break;
 111                 default:
 112                         return _("???");
 113                         break;
 114         }
 115 }
 116
 117 static inline int types_to_bit (vector<ARDOUR::DataType> types) {
 118         int rv = 0;
 119         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 120                 rv |= 1 << (*i);
 121         }
 122         return rv;
 123 }
 124
 125 static inline float mtr_col_and_fract(
 126                 cairo_t* cr, Gdk::Color const * const c, const uint32_t peakcolor, const MeterType mt, const float val)
 127 {
 128         float fraction = 0;
 129
 130         switch (mt) {
 131                 default:
 132                 case MeterKrms:
 133                 case MeterPeak:
 134                         fraction = log_meter (val);
 135                         if (val >= 0 || val == -9) {
 136                                 cairo_set_source_rgb (cr,
 137                                                 UINT_RGBA_R_FLT(peakcolor),
 138                                                 UINT_RGBA_G_FLT(peakcolor),
 139                                                 UINT_RGBA_B_FLT(peakcolor));
 140                         } else {
 141                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 142                         }
 143                         break;
 144                 case MeterIEC2BBC:
 145                 case MeterIEC2EBU:
 146                         fraction = meter_deflect_ppm(val);
 147                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 148                         break;
 149                 case MeterIEC1NOR:
 150                         fraction = meter_deflect_nordic(val);
 151 #if 0
 152                         if (val == -18.0) {
 153                                 cairo_set_source_rgb (cr,
 154                                                 UINT_RGBA_R_FLT(peakcolor),
 155                                                 UINT_RGBA_G_FLT(peakcolor),
 156                                                 UINT_RGBA_B_FLT(peakcolor));
 157                         } else {
 158                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 159                         }
 160 #else
 161                         cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 162 #endif
 163                         break;
 164                 case MeterIEC1DIN:
 165                         fraction = meter_deflect_din(val);
 166                         if (val == -9.0 || val == -15 || val == -18) {
 167                                 cairo_set_source_rgb (cr,
 168                                                 UINT_RGBA_R_FLT(peakcolor),
 169                                                 UINT_RGBA_G_FLT(peakcolor),
 170                                                 UINT_RGBA_B_FLT(peakcolor));
 171                         } else {
 172                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 173                         }
 174                         break;
 175                 case MeterVU:
 176                         fraction = meter_deflect_vu(val);
 177                         if (val >= -20.0) {
 178                                 cairo_set_source_rgb (cr,
 179                                                 UINT_RGBA_R_FLT(peakcolor),
 180                                                 UINT_RGBA_G_FLT(peakcolor),
 181                                                 UINT_RGBA_B_FLT(peakcolor));
 182                         } else {
 183                                 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
 184                         }
 185                         break;
 186                 case MeterK20:
 187                         fraction = meter_deflect_k (val, 20);
 188                         if (val >= -16.0) {
 189                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 190                         } else if (val >= -20.0) {
 191                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 192                         } else {
 193                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 194                         }
 195                         break;
 196                 case MeterK14:
 197                         if (val >= -10.0) {
 198                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 199                         } else if (val >= -14.0) {
 200                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 201                         } else {
 202                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 203                         }
 204                         fraction = meter_deflect_k (val, 14);
 205                         break;
 206                 case MeterK12:
 207                         if (val >= -8.0) {
 208                                 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
 209                         } else if (val >= -12.0) {
 210                                 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
 211                         } else {
 212                                 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
 213                         }
 214                         fraction = meter_deflect_k (val, 12);
 215                         break;
 216         }
 217         return fraction;
 218 }
 219
 220 static void mtr_red_stripe(cairo_t* cr, float l, float w, int h, float top, float bot) {
 221         if (w <= 0) return;
 222         int t = h - floorf (h * (top));
 223         int b = h - floorf (h * (bot));
 224         cairo_set_source_rgba (cr, .75, 0, 0, 0.75);
 225         cairo_rectangle (cr, l, t + .5, w, b - t);
 226         cairo_fill (cr);
 227 }
 228
 229 static void set_bg_color (Gtk::Widget& w, cairo_t* cr, MeterType type) {
 230         double r,g,b,a;
 231         switch(type) {
 232                 case MeterVU:
 233                         ArdourCanvas::color_to_rgba (ARDOUR_UI::config()->color ("meterstrip vu bg"), r, g, b, a);
 234                         break;
 235                 case MeterIEC1DIN:
 236                 case MeterIEC1NOR:
 237                 case MeterIEC2BBC:
 238                 case MeterIEC2EBU:
 239                 case MeterK12:
 240                 case MeterK14:
 241                 case MeterK20:
 242                         ArdourCanvas::color_to_rgba (ARDOUR_UI::config()->color ("meterstrip ppm bg"), r, g, b, a);
 243                         break;
 244                 default:
 245                         {
 246                         Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
 247                         r = c.get_red_p();
 248                         g = c.get_green_p();
 249                         b = c.get_blue_p();
 250                         }
 251                         break;
 252         }
 253         cairo_set_source_rgb (cr, r, g, b);
 254 }
 255
 256 static void set_fg_color(Gtk::Widget&, MeterType type, Gdk::Color * c) {
 257         double r,g,b,a;
 258         switch(type) {
 259                 case MeterVU:
 260                         ArdourCanvas::color_to_rgba (ARDOUR_UI::config()->color ("meterstrip vu fg"), r, g, b, a);
 261
 262                         break;
 263                 default:
 264                         ArdourCanvas::color_to_rgba (ARDOUR_UI::config()->color ("meterstrip vu fg"), r, g, b, a);
 265                         break;
 266         }
 267         c->set_rgb_p (r, g, b);
 268 }
 269
 270 static cairo_pattern_t*
 271 meter_render_ticks (Gtk::Widget& w, MeterType type, vector<ARDOUR::DataType> types)
 272 {
 273         Glib::RefPtr<Gdk::Window> win (w.get_window());
 274
 275         bool background;
 276         bool tickleft, tickright;
 277         gint width, height;
 278         win->get_size (width, height);
 279         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 280         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 281         background = types.size() == 0 || tickleft || tickright;
 282
 283         float box_l=0;
 284         float box_w=0;
 285         if (tickleft) {
 286                 if (w.get_name().substr(0, 3) == "Bar") {
 287                         box_l = width-2; box_w = 2;
 288                 } else if (w.get_name().substr(0, 4) == "Mark") {
 289                         box_l = width-2; box_w = 2;
 290                         background = false;
 291                 }
 292         } else if (tickright) {
 293                 if (w.get_name().substr(0, 3) == "Bar") {
 294                         box_l = 0; box_w = 2;
 295                 } else if (w.get_name().substr(0, 4) == "Mark") {
 296                         box_l = 0; box_w = 2;
 297                         background = false;
 298                 }
 299         } else {
 300                 box_l = 0; box_w = 3;
 301         }
 302
 303         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 304         cairo_t* cr = cairo_create (surface);
 305
 306         cairo_move_to (cr, 0, 0);
 307         cairo_rectangle (cr, 0, 0, width, height);
 308
 309         if (background) {
 310                 /* meterbridge */
 311                 set_bg_color(w, cr, type);
 312         } else {
 313                 /* mixer */
 314                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 315                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 316         }
 317         cairo_fill (cr);
 318
 319         height = min(max_pattern_metric_size, height);
 320         uint32_t peakcolor = ARDOUR_UI::config()->color ("meterbridge peaklabel");
 321
 322         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 323
 324                 Gdk::Color c;
 325                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 326                         /* we're overlaying more than 1 set of marks, so use different colours */
 327                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 328                 } else if (background) {
 329                         set_fg_color(w, type, &c);
 330                 } else {
 331                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 332                 }
 333
 334                 // tick-maker position in dBFS, line-thickness
 335                 std::map<float,float> points;
 336
 337                 switch (*i) {
 338                 case DataType::AUDIO:
 339
 340                         switch (type) {
 341                                 case MeterK12:
 342                                         points.insert (std::pair<float,float>(-52.0f, 1.0));
 343                                         points.insert (std::pair<float,float>(-42.0f, 1.0));
 344                                         points.insert (std::pair<float,float>(-32.0f, 1.0));
 345                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 346                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 347                                         points.insert (std::pair<float,float>(-15.0f, 1.0));
 348                                         points.insert (std::pair<float,float>(-12.0f, 1.0));
 349                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 350                                         points.insert (std::pair<float,float>( -8.0f, 0.8));
 351                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 352                                         points.insert (std::pair<float,float>( -3.0f, 1.0));
 353                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 354                                         break;
 355                                 case MeterK14:
 356                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 357                                         points.insert (std::pair<float,float>(-44.0f, 1.0));
 358                                         points.insert (std::pair<float,float>(-34.0f, 1.0));
 359                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 360                                         points.insert (std::pair<float,float>(-20.0f, 1.0));
 361                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 362                                         points.insert (std::pair<float,float>(-14.0f, 1.0)); //   0
 363                                         points.insert (std::pair<float,float>(-11.0f, 1.0)); //  +3
 364                                         points.insert (std::pair<float,float>(-10.0f, 0.8)); //  +4
 365                                         points.insert (std::pair<float,float>( -8.0f, 1.0)); //  +6
 366                                         points.insert (std::pair<float,float>( -4.0f, 1.0)); // +10
 367                                         points.insert (std::pair<float,float>(  0.0f, 1.0));
 368                                         break;
 369                                 case MeterK20:
 370                                         points.insert (std::pair<float,float>(-60.0f, 1.0));
 371                                         points.insert (std::pair<float,float>(-50.0f, 1.0));
 372                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 373                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 374                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 375                                         points.insert (std::pair<float,float>(-23.0f, 1.0));
 376                                         points.insert (std::pair<float,float>(-20.0f, 1.0)); //  0
 377                                         points.insert (std::pair<float,float>(-17.0f, 1.0));
 378                                         points.insert (std::pair<float,float>(-16.0f, 0.8));
 379                                         points.insert (std::pair<float,float>(-14.0f, 1.0)); // +6
 380                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 381                                         points.insert (std::pair<float,float>( -5.0f, 1.0));
 382                                         points.insert (std::pair<float,float>(  0.0f, 1.0)); //+20
 383                                         break;
 384                                 case MeterIEC2EBU:
 385                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 386                                         points.insert (std::pair<float,float>(-28.0f, 0.5));
 387                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 388                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 389                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 390                                         points.insert (std::pair<float,float>(-20.0f, 0.5));
 391                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 392                                         points.insert (std::pair<float,float>(-16.0f, 0.5));
 393                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 394                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 395                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 396                                         points.insert (std::pair<float,float>( -9.0f, 0.8));
 397                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 398                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 399                                         break;
 400                                 case MeterIEC2BBC:
 401                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 402                                         points.insert (std::pair<float,float>(-26.0f, 1.0));
 403                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 404                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 405                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 406                                         points.insert (std::pair<float,float>(-10.0f, 1.0));
 407                                         points.insert (std::pair<float,float>( -6.0f, 1.0));
 408                                         break;
 409                                 case MeterIEC1NOR:
 410                                         points.insert (std::pair<float,float>(-60.0f, 1.0)); // -42
 411                                         points.insert (std::pair<float,float>(-57.0f, 0.5));
 412                                         points.insert (std::pair<float,float>(-54.0f, 1.0));
 413                                         points.insert (std::pair<float,float>(-51.0f, 0.5));
 414                                         points.insert (std::pair<float,float>(-48.0f, 1.0));
 415                                         points.insert (std::pair<float,float>(-45.0f, 0.5));
 416                                         points.insert (std::pair<float,float>(-42.0f, 1.0));
 417                                         points.insert (std::pair<float,float>(-39.0f, 0.5));
 418                                         points.insert (std::pair<float,float>(-36.0f, 1.0));
 419
 420                                         points.insert (std::pair<float,float>(-33.0f, 0.5));
 421                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 422                                         points.insert (std::pair<float,float>(-27.0f, 0.5));
 423                                         points.insert (std::pair<float,float>(-24.0f, 1.0));
 424                                         points.insert (std::pair<float,float>(-21.0f, 0.5));
 425
 426                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 427                                         points.insert (std::pair<float,float>(-15.0f, 0.5));
 428                                         points.insert (std::pair<float,float>(-12.0f, 1.0));
 429                                         points.insert (std::pair<float,float>( -9.0f, 1.0));
 430                                         points.insert (std::pair<float,float>( -6.0f, 0.5));
 431                                         mtr_red_stripe(cr, box_l, box_w, height,
 432                                                         meter_deflect_nordic(-6.0f), meter_deflect_nordic(-12.0f));
 433                                         break;
 434                                 case MeterIEC1DIN:
 435                                         points.insert (std::pair<float,float>( -3.0f, 0.5)); // "200%"
 436                                         points.insert (std::pair<float,float>( -4.0f, 1.0));
 437                                         points.insert (std::pair<float,float>( -5.0f, 0.5));
 438                                         points.insert (std::pair<float,float>( -6.0f, 0.5));
 439                                         points.insert (std::pair<float,float>( -7.0f, 0.5));
 440                                         points.insert (std::pair<float,float>( -8.0f, 0.5));
 441                                         points.insert (std::pair<float,float>( -9.0f, 1.0)); // "100%"
 442                                         points.insert (std::pair<float,float>(-10.0f, 0.5));
 443                                         points.insert (std::pair<float,float>(-11.0f, 0.5));
 444                                         points.insert (std::pair<float,float>(-12.0f, 0.5));
 445                                         points.insert (std::pair<float,float>(-13.0f, 0.5));
 446                                         points.insert (std::pair<float,float>(-14.0f, 1.0));
 447                                         points.insert (std::pair<float,float>(-15.0f, 0.8)); // "50%"
 448                                         points.insert (std::pair<float,float>(-18.0f, 0.8)); // "-9"
 449                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 450                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 451                                         points.insert (std::pair<float,float>(-29.0f, 1.0)); // "-20", "10%"
 452                                         points.insert (std::pair<float,float>(-34.0f, 0.5)); // -25
 453                                         //points.insert (std::pair<float,float>(-35.0f, 0.5)); // "5%" " -20"
 454                                         points.insert (std::pair<float,float>(-39.0f, 1.0));
 455                                         points.insert (std::pair<float,float>(-49.0f, 1.0));
 456                                         points.insert (std::pair<float,float>(-54.0f, 0.5));
 457                                         points.insert (std::pair<float,float>(-59.0f, 1.0));
 458                                         mtr_red_stripe(cr, box_l, box_w, height,
 459                                                         meter_deflect_din(0.0f), meter_deflect_din(-9.0f));
 460                                         break;
 461                                 case MeterVU:
 462                                         points.insert (std::pair<float,float>(-17.0f, 1.0)); //+3 VU
 463                                         points.insert (std::pair<float,float>(-18.0f, 1.0));
 464                                         points.insert (std::pair<float,float>(-19.0f, 1.0));
 465                                         points.insert (std::pair<float,float>(-19.5f, 0.5));
 466                                         points.insert (std::pair<float,float>(-20.0f, 1.0)); // 0 VU
 467                                         points.insert (std::pair<float,float>(-20.5f, 0.5));
 468                                         points.insert (std::pair<float,float>(-21.0f, 1.0));
 469                                         points.insert (std::pair<float,float>(-22.0f, 1.0));
 470                                         points.insert (std::pair<float,float>(-23.0f, 1.0)); //-3 VU
 471                                         points.insert (std::pair<float,float>(-24.0f, 0.5));
 472                                         points.insert (std::pair<float,float>(-25.0f, 1.0));
 473                                         points.insert (std::pair<float,float>(-26.0f, 0.5));
 474                                         points.insert (std::pair<float,float>(-27.0f, 1.0)); //-7 VU
 475                                         points.insert (std::pair<float,float>(-30.0f, 1.0));
 476                                         points.insert (std::pair<float,float>(-35.0f, 0.5));
 477                                         points.insert (std::pair<float,float>(-40.0f, 1.0));
 478                                         mtr_red_stripe(cr, box_l, box_w, height,
 479                                                         meter_deflect_vu(-17.0f), meter_deflect_vu(-20.0f));
 480                                         break;
 481
 482                                 default:
 483                                         points.insert (std::pair<float,float>(-60, 0.5));
 484                                         points.insert (std::pair<float,float>(-50, 1.0));
 485                                         points.insert (std::pair<float,float>(-40, 1.0));
 486                                         points.insert (std::pair<float,float>(-30, 1.0));
 487                                         if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 488                                                 points.insert (std::pair<float,float>(-24, 1.0));
 489                                         } else {
 490                                                 points.insert (std::pair<float,float>(-25, 1.0));
 491                                         }
 492                                         points.insert (std::pair<float,float>(-20, 1.0));
 493
 494                                         points.insert (std::pair<float,float>(-19, 0.5));
 495                                         points.insert (std::pair<float,float>(-18, 1.0));
 496                                         points.insert (std::pair<float,float>(-17, 0.5));
 497                                         points.insert (std::pair<float,float>(-16, 0.5));
 498                                         points.insert (std::pair<float,float>(-15, 1.0));
 499
 500                                         points.insert (std::pair<float,float>(-14, 0.5));
 501                                         points.insert (std::pair<float,float>(-13, 0.5));
 502                                         points.insert (std::pair<float,float>(-12, 0.5));
 503                                         points.insert (std::pair<float,float>(-11, 0.5));
 504                                         points.insert (std::pair<float,float>(-10, 1.0));
 505
 506                                         points.insert (std::pair<float,float>( -9, 1.0));
 507                                         points.insert (std::pair<float,float>( -8, 0.5));
 508                                         points.insert (std::pair<float,float>( -7, 0.5));
 509                                         points.insert (std::pair<float,float>( -6, 0.5));
 510                                         points.insert (std::pair<float,float>( -5, 1.0));
 511                                         points.insert (std::pair<float,float>( -4, 0.5));
 512                                         points.insert (std::pair<float,float>( -3, 1.0));
 513                                         points.insert (std::pair<float,float>( -2, 0.5));
 514                                         points.insert (std::pair<float,float>( -1, 0.5));
 515
 516                                         points.insert (std::pair<float,float>(  0, 1.0));
 517                                         points.insert (std::pair<float,float>(  1, 0.5));
 518                                         points.insert (std::pair<float,float>(  2, 0.5));
 519                                         points.insert (std::pair<float,float>(  3, 1.0));
 520                                         points.insert (std::pair<float,float>(  4, 0.5));
 521                                         points.insert (std::pair<float,float>(  5, 0.5));
 522                                         break;
 523                         }
 524                         break;
 525
 526                 case DataType::MIDI:
 527                         points.insert (std::pair<float,float>(  0, 1.0));
 528                         points.insert (std::pair<float,float>( 16, 0.5));
 529                         points.insert (std::pair<float,float>( 32, 0.5));
 530                         points.insert (std::pair<float,float>( 48, 0.5));
 531                         points.insert (std::pair<float,float>( 64, 1.0));
 532                         points.insert (std::pair<float,float>( 80, 0.5));
 533                         points.insert (std::pair<float,float>( 96, 0.5));
 534                         points.insert (std::pair<float,float>(100, 1.0));
 535                         points.insert (std::pair<float,float>(112, 0.5));
 536                         points.insert (std::pair<float,float>(127, 1.0));
 537                         break;
 538                 }
 539
 540                 for (std::map<float,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 541                         cairo_set_line_width (cr, (j->second));
 542
 543                         float fraction = 0;
 544                         gint pos;
 545
 546                         switch (*i) {
 547                         case DataType::AUDIO:
 548                                 fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 549
 550                                 pos = height - (gint) floor (height * fraction);
 551                                 pos = max (pos, 1);
 552                                 cairo_move_to(cr, 0, pos + .5);
 553                                 cairo_line_to(cr, 3, pos + .5);
 554                                 cairo_stroke (cr);
 555                                 break;
 556                         case DataType::MIDI:
 557                                 fraction = (j->first) / 127.0;
 558                                 pos = 1 + height - (gint) floor (height * fraction);
 559                                 pos = min (pos, height);
 560                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 561                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 562                                 cairo_fill(cr);
 563                                 break;
 564                         }
 565                 }
 566         }
 567
 568         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 569
 570         cairo_destroy (cr);
 571         cairo_surface_destroy (surface);
 572
 573         return pattern;
 574 }
 575
 576 static cairo_pattern_t*
 577 meter_render_metrics (Gtk::Widget& w, MeterType type, vector<DataType> types)
 578 {
 579         Glib::RefPtr<Gdk::Window> win (w.get_window());
 580
 581         bool tickleft, tickright;
 582         bool background;
 583         int overlay_midi = 1;
 584         gint width, height;
 585         win->get_size (width, height);
 586
 587         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 588         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 589         background = types.size() == 0 || tickleft || tickright;
 590
 591         if (!tickleft && !tickright) {
 592                 tickright = true;
 593         }
 594
 595         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 596         cairo_t* cr = cairo_create (surface);
 597         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 598
 599         Pango::AttrList audio_font_attributes;
 600         Pango::AttrList midi_font_attributes;
 601         Pango::AttrList unit_font_attributes;
 602
 603         Pango::AttrFontDesc* font_attr;
 604         Pango::FontDescription font;
 605
 606         font = Pango::FontDescription (ARDOUR_UI::config()->get_SmallMonospaceFont());
 607         double fixfontsize = 81920.0 / (double) ARDOUR::Config->get_font_scale();
 608
 609         font.set_weight (Pango::WEIGHT_NORMAL);
 610         font.set_size (9.0 * PANGO_SCALE * fixfontsize);
 611         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 612         audio_font_attributes.change (*font_attr);
 613         delete font_attr;
 614
 615         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 616         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 617         font.set_size (8.0 * PANGO_SCALE * fixfontsize);
 618         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 619         midi_font_attributes.change (*font_attr);
 620         delete font_attr;
 621
 622         font.set_size (6.0 * PANGO_SCALE * fixfontsize);
 623         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 624         unit_font_attributes.change (*font_attr);
 625         delete font_attr;
 626
 627         cairo_move_to (cr, 0, 0);
 628         cairo_rectangle (cr, 0, 0, width, height);
 629         if (background) {
 630                 /* meterbridge */
 631                 set_bg_color(w, cr, type);
 632         } else {
 633                 /* mixer */
 634                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 635                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 636         }
 637         cairo_fill (cr);
 638
 639         cairo_set_line_width (cr, 1.0);
 640
 641         height = min(max_pattern_metric_size, height);
 642         uint32_t peakcolor = ARDOUR_UI::config()->color ("meterbridge peaklabel");
 643         Gdk::Color c; // default text color
 644
 645         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 646
 647                 if (types.size() > 1 && (*i) == DataType::MIDI && overlay_midi == 0) {
 648                         continue;
 649                 }
 650
 651                 if (types.size() > 1 && (*i) == DataType::MIDI) {
 652                         /* we're overlaying more than 1 set of marks, so use different colours */
 653                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 654                 } else if (background) {
 655                         set_fg_color(w, type, &c);
 656                 } else {
 657                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 658                 }
 659
 660                 std::map<float,string> points; // map: label-pos in dBFS, label-text
 661
 662                 switch (*i) {
 663                 case DataType::AUDIO:
 664                         layout->set_attributes (audio_font_attributes);
 665                         switch (type) {
 666                                 case MeterK12:
 667                                         overlay_midi = 0;
 668                                         points.insert (std::pair<float,string>(-52.0f, "-40"));
 669                                         points.insert (std::pair<float,string>(-42.0f, "-30"));
 670                                         points.insert (std::pair<float,string>(-32.0f, "-20"));
 671                                         points.insert (std::pair<float,string>(-22.0f, "-10"));
 672                                         points.insert (std::pair<float,string>(-18.0f,  "-6"));
 673                                         points.insert (std::pair<float,string>(-15.0f,  "-3"));
 674                                         points.insert (std::pair<float,string>(-12.0f,  " 0"));
 675                                         points.insert (std::pair<float,string>( -9.0f,  "+3"));
 676                                         points.insert (std::pair<float,string>( -6.0f,  "+6"));
 677                                         points.insert (std::pair<float,string>( -3.0f,  "+9"));
 678                                         points.insert (std::pair<float,string>(  0.0f, "+12"));
 679                                         break;
 680                                 case MeterK14:
 681                                         overlay_midi = 0;
 682                                         points.insert (std::pair<float,string>(-54.0f, "-40"));
 683                                         points.insert (std::pair<float,string>(-44.0f, "-30"));
 684                                         points.insert (std::pair<float,string>(-34.0f, "-20"));
 685                                         points.insert (std::pair<float,string>(-24.0f, "-10"));
 686                                         points.insert (std::pair<float,string>(-20.0f,  "-6"));
 687                                         points.insert (std::pair<float,string>(-17.0f,  "-3"));
 688                                         points.insert (std::pair<float,string>(-14.0f,  " 0"));
 689                                         points.insert (std::pair<float,string>(-11.0f,  "+3"));
 690                                         points.insert (std::pair<float,string>( -8.0f,  "+6"));
 691                                         points.insert (std::pair<float,string>( -4.0f, "+10"));
 692                                         points.insert (std::pair<float,string>(  0.0f, "+14"));
 693                                         break;
 694                                 case MeterK20:
 695                                         overlay_midi = 0;
 696                                         points.insert (std::pair<float,string>(-60.0f, "-40"));
 697                                         points.insert (std::pair<float,string>(-50.0f, "-30"));
 698                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 699                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 700                                         points.insert (std::pair<float,string>(-26.0f,  "-6"));
 701                                         points.insert (std::pair<float,string>(-23.0f,  "-3"));
 702                                         points.insert (std::pair<float,string>(-20.0f,  " 0"));
 703                                         points.insert (std::pair<float,string>(-17.0f,  "+3"));
 704                                         points.insert (std::pair<float,string>(-14.0f,  "+6"));
 705                                         points.insert (std::pair<float,string>(-10.0f, "+10"));
 706                                         points.insert (std::pair<float,string>( -5.0f, "+15"));
 707                                         points.insert (std::pair<float,string>(  0.0f, "+20"));
 708                                         break;
 709                                 default:
 710                                 case MeterPeak:
 711                                 case MeterKrms:
 712                                         points.insert (std::pair<float,string>(-50.0f, "-50"));
 713                                         points.insert (std::pair<float,string>(-40.0f, "-40"));
 714                                         points.insert (std::pair<float,string>(-30.0f, "-30"));
 715                                         points.insert (std::pair<float,string>(-20.0f, "-20"));
 716                                         if (types.size() == 1) {
 717                                                 if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 718                                                         points.insert (std::pair<float,string>(-24.0f, "-24"));
 719                                                 } else {
 720                                                         points.insert (std::pair<float,string>(-25.0f, "-25"));
 721                                                 }
 722                                                 points.insert (std::pair<float,string>(-15.0f, "-15"));
 723                                         }
 724                                         points.insert (std::pair<float,string>(-18.0f, "-18"));
 725                                         points.insert (std::pair<float,string>(-10.0f, "-10"));
 726                                         points.insert (std::pair<float,string>( -5.0f, "-5"));
 727                                         points.insert (std::pair<float,string>( -3.0f, "-3"));
 728                                         points.insert (std::pair<float,string>(  0.0f, "+0"));
 729                                         points.insert (std::pair<float,string>(  3.0f, "+3"));
 730                                         break;
 731
 732                                 case MeterIEC2EBU:
 733                                         overlay_midi = 3;
 734                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 735                                         points.insert (std::pair<float,string>(-26.0f, "-8"));
 736                                         points.insert (std::pair<float,string>(-22.0f, "-4"));
 737                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 738                                         points.insert (std::pair<float,string>(-14.0f, "+4"));
 739                                         points.insert (std::pair<float,string>(-10.0f, "+8"));
 740                                         points.insert (std::pair<float,string>( -6.0f, "+12"));
 741                                         break;
 742
 743                                 case MeterIEC2BBC:
 744                                         overlay_midi = 3;
 745                                         points.insert (std::pair<float,string>(-30.0f, " 1 "));
 746                                         points.insert (std::pair<float,string>(-26.0f, " 2 "));
 747                                         points.insert (std::pair<float,string>(-22.0f, " 3 "));
 748                                         points.insert (std::pair<float,string>(-18.0f, " 4 "));
 749                                         points.insert (std::pair<float,string>(-14.0f, " 5 "));
 750                                         points.insert (std::pair<float,string>(-10.0f, " 6 "));
 751                                         points.insert (std::pair<float,string>( -6.0f, " 7 "));
 752                                         break;
 753
 754                                 case MeterIEC1NOR:
 755                                         overlay_midi = 0;
 756                                         //points.insert (std::pair<float,string>(-60.0f, "-42"));
 757                                         points.insert (std::pair<float,string>(-54.0f, "-36"));
 758                                         points.insert (std::pair<float,string>(-48.0f, "-30"));
 759                                         points.insert (std::pair<float,string>(-42.0f, "-24"));
 760                                         points.insert (std::pair<float,string>(-36.0f, "-18"));
 761
 762                                         //points.insert (std::pair<float,string>(-33.0f, "-15"));
 763                                         points.insert (std::pair<float,string>(-30.0f, "-12"));
 764                                         //points.insert (std::pair<float,string>(-27.0f, "-9"));
 765                                         points.insert (std::pair<float,string>(-24.0f, "-6"));
 766                                         //points.insert (std::pair<float,string>(-21.0f, "-3"));
 767
 768                                         points.insert (std::pair<float,string>(-18.0f, "TST"));
 769                                         //points.insert (std::pair<float,string>(-15.0f, "+3"));
 770                                         points.insert (std::pair<float,string>(-12.0f, "+6"));
 771                                         points.insert (std::pair<float,string>( -9.0f, "+9"));
 772                                         //points.insert (std::pair<float,string>( -6.0f, "+12"));
 773                                         break;
 774
 775                                 case MeterIEC1DIN:
 776                                         overlay_midi = 2;
 777                                         //points.insert (std::pair<float,string>( -3.0f, "200%"));
 778                                         points.insert (std::pair<float,string>( -4.0f, "+5"));
 779                                         points.insert (std::pair<float,string>( -9.0f, "0")); // "100%";
 780                                         points.insert (std::pair<float,string>(-14.0f, "-5"));
 781                                         //points.insert (std::pair<float,string>(-15.0f, "50%"));
 782                                         //points.insert (std::pair<float,string>(-18.0f, "-9"));
 783                                         points.insert (std::pair<float,string>(-19.0f, "-10")); // "30%"
 784                                         points.insert (std::pair<float,string>(-29.0f, "-20")); // "10%"
 785                                         //points.insert (std::pair<float,string>(-35.0f, "5%")); // "5%"
 786                                         points.insert (std::pair<float,string>(-39.0f, "-30"));
 787                                         //points.insert (std::pair<float,string>(-49.0f, "1%"));
 788                                         points.insert (std::pair<float,string>(-59.0f, "-50"));
 789                                         break;
 790
 791                                 case MeterVU:
 792                                         overlay_midi = 0;
 793                                         points.insert (std::pair<float,string>(-17.0f, "+3"));
 794                                         points.insert (std::pair<float,string>(-18.0f, "+2"));
 795                                         points.insert (std::pair<float,string>(-19.0f, "+1"));
 796                                         points.insert (std::pair<float,string>(-20.0f, " 0"));
 797                                         points.insert (std::pair<float,string>(-21.0f, "-1"));
 798                                         points.insert (std::pair<float,string>(-22.0f, "-2"));
 799                                         points.insert (std::pair<float,string>(-23.0f, "-3"));
 800                                         points.insert (std::pair<float,string>(-25.0f, "-5"));
 801                                         points.insert (std::pair<float,string>(-27.0f, "-7"));
 802                                         points.insert (std::pair<float,string>(-30.0f, "-10"));
 803                                         points.insert (std::pair<float,string>(-40.0f, "-20"));
 804                                         break;
 805                         }
 806                         break;
 807                 case DataType::MIDI:
 808                         layout->set_attributes (midi_font_attributes);
 809                         if (types.size() == 1) {
 810                                 points.insert (std::pair<float,string>(  0, "0"));
 811                                 points.insert (std::pair<float,string>( 16,  "16"));
 812                                 points.insert (std::pair<float,string>( 32,  "32"));
 813                                 points.insert (std::pair<float,string>( 48,  "48"));
 814                                 points.insert (std::pair<float,string>( 64,  "64"));
 815                                 points.insert (std::pair<float,string>( 80,  "80"));
 816                                 points.insert (std::pair<float,string>( 96,  "96"));
 817                                 points.insert (std::pair<float,string>(100, "100"));
 818                                 points.insert (std::pair<float,string>(112, "112"));
 819                         } else {
 820                                 switch (overlay_midi) {
 821                                         case 1:
 822                                                 /* labels that don't overlay with dBFS */
 823                                                 points.insert (std::pair<float,string>(  0, "0"));
 824                                                 points.insert (std::pair<float,string>( 24, "24"));
 825                                                 points.insert (std::pair<float,string>( 48, "48"));
 826                                                 points.insert (std::pair<float,string>( 72, "72"));
 827                                                 points.insert (std::pair<float,string>(127, "127"));
 828                                                 break;
 829                                         case 2:
 830                                                 /* labels that don't overlay with DIN */
 831                                                 points.insert (std::pair<float,string>(  0, "0"));
 832                                                 points.insert (std::pair<float,string>( 16,  "16"));
 833                                                 points.insert (std::pair<float,string>( 40,  "40"));
 834                                                 points.insert (std::pair<float,string>( 64,  "64"));
 835                                                 points.insert (std::pair<float,string>(112, "112"));
 836                                                 points.insert (std::pair<float,string>(127, "127"));
 837                                                 break;
 838                                         case 3:
 839                                                 /* labels that don't overlay with BBC nor EBU*/
 840                                                 points.insert (std::pair<float,string>(  0, "0"));
 841                                                 points.insert (std::pair<float,string>( 16, "16"));
 842                                                 points.insert (std::pair<float,string>( 56, "56"));
 843                                                 points.insert (std::pair<float,string>( 72, "72"));
 844                                                 points.insert (std::pair<float,string>(112, "112"));
 845                                                 points.insert (std::pair<float,string>(127, "127"));
 846                                         default:
 847                                                 break;
 848                                 }
 849                         }
 850                         break;
 851                 }
 852
 853                 gint pos = -1;
 854
 855                 for (std::map<float,string>::const_iterator j = points.begin(); j != points.end(); ++j) {
 856                         float fraction = 0;
 857                         bool align_center = background; // this is true for meterbridge meters w/ fixed background
 858                         switch (*i) {
 859                                 case DataType::AUDIO:
 860                                         fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 861
 862                                         pos = height - (gint) floor (height * fraction);
 863                                         pos = max (pos, 1);
 864                                         if (tickleft) {
 865                                                 cairo_move_to(cr, width-1.5, pos + .5);
 866                                                 cairo_line_to(cr, width, pos + .5);
 867                                                 cairo_stroke (cr);
 868                                         } else if (tickright) {
 869                                                 cairo_move_to(cr, 0, pos + .5);
 870                                                 cairo_line_to(cr, 1.5, pos + .5);
 871                                                 cairo_stroke (cr);
 872                                         }
 873                                         break;
 874
 875                                 case DataType::MIDI:
 876                                         align_center = false; // don't bleed into legend
 877                                         fraction = (j->first) / 127.0;
 878                                         pos = 1 + height - (gint) lrintf (height * fraction);
 879                                         pos = min (pos, height);
 880                                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 881                                         if (tickleft) {
 882                                                 cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
 883                                                 cairo_fill(cr);
 884                                         } else if (tickright) {
 885                                                 cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 886                                                 cairo_fill(cr);
 887                                         }
 888                                         break;
 889                         }
 890
 891                         if (pos < 0) continue;
 892
 893                         layout->set_text(j->second.c_str());
 894
 895                         int tw, th;
 896                         layout->get_pixel_size(tw, th);
 897
 898                         int p = pos - (th / 2) - 1;
 899                         p = min (p, height - th);
 900                         p = max (p, 0);
 901
 902                         if (align_center) {
 903                                 cairo_move_to (cr, (width-tw)/2.0, p);
 904                         } else {
 905                                 cairo_move_to (cr, width-3-tw, p);
 906                         }
 907
 908                         cairo_set_line_width(cr, 0.12);
 909                         cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
 910                         pango_cairo_layout_path(cr, layout->gobj());
 911                         cairo_stroke_preserve (cr);
 912                         cairo_set_line_width(cr, 1.0);
 913
 914                         if ((*i) == DataType::AUDIO) {
 915                                 mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
 916                         } else {
 917                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 918                         }
 919
 920                         pango_cairo_show_layout (cr, layout->gobj());
 921                         cairo_new_path(cr);
 922                 }
 923         }
 924
 925         // add legend
 926         if (types.size() == 1 || overlay_midi == 0) {
 927                 int tw, th;
 928                 layout->set_attributes (unit_font_attributes);
 929                 switch (types.at(0)) {
 930                         case DataType::AUDIO:
 931                                 switch (type) {
 932                                         case MeterK20:
 933                                                 layout->set_text("K20");
 934                                                 break;
 935                                         case MeterK14:
 936                                                 layout->set_text("K14");
 937                                                 break;
 938                                         case MeterK12:
 939                                                 layout->set_text("K12");
 940                                                 break;
 941                                         default:
 942                                         case MeterPeak:
 943                                         case MeterKrms:
 944                                                 layout->set_text("dBFS");
 945                                                 break;
 946                                         case MeterIEC2EBU:
 947                                                 layout->set_text("EBU");
 948                                                 break;
 949                                         case MeterIEC2BBC:
 950                                                 layout->set_text("BBC");
 951                                                 break;
 952                                         case MeterIEC1DIN:
 953                                                 layout->set_text("DIN");
 954                                                 break;
 955                                         case MeterIEC1NOR:
 956                                                 layout->set_text("NOR");
 957                                                 break;
 958                                         case MeterVU:
 959                                                 layout->set_text("VU");
 960                                                 break;
 961                                 }
 962                                 layout->get_pixel_size(tw, th);
 963                                 break;
 964                         case DataType::MIDI:
 965                                 layout->set_text("mid");
 966                                 layout->get_pixel_size(tw, th);
 967                                 break;
 968                 }
 969                 if (!background) {
 970                         c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 971                 }
 972                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 973                 if (tickleft) {
 974                         cairo_move_to (cr, width - 2 - tw, height - th - 0.5);
 975                 } else {
 976                         cairo_move_to (cr, 2, height - th - 0.5);
 977                 }
 978                 pango_cairo_show_layout (cr, layout->gobj());
 979         }
 980
 981         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 982
 983         cairo_destroy (cr);
 984         cairo_surface_destroy (surface);
 985
 986         return pattern;
 987 }
 988
 989 gint
 990 ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
 991 {
 992         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 993         cairo_t* cr;
 994
 995         cr = gdk_cairo_create (win->gobj());
 996
 997         /* clip to expose area */
 998
 999         gdk_cairo_rectangle (cr, &ev->area);
1000         cairo_clip (cr);
1001
1002         cairo_pattern_t* pattern;
1003         const MeterMatricsMapKey key (mta->get_name(), type, types_to_bit(types));
1004         MetricPatternMap::iterator i = ticks_patterns.find (key);
1005
1006         if (i == ticks_patterns.end()) {
1007                 pattern = meter_render_ticks (*mta, type, types);
1008                 ticks_patterns[key] = pattern;
1009         } else {
1010                 pattern = i->second;
1011         }
1012
1013         cairo_move_to (cr, 0, 0);
1014         cairo_set_source (cr, pattern);
1015
1016         gint width, height;
1017         win->get_size (width, height);
1018
1019         cairo_rectangle (cr, 0, 0, width, height);
1020         cairo_fill (cr);
1021
1022         cairo_destroy (cr);
1023
1024         return true;
1025 }
1026
1027 gint
1028 ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
1029 {
1030         Glib::RefPtr<Gdk::Window> win (mma->get_window());
1031         cairo_t* cr;
1032
1033         cr = gdk_cairo_create (win->gobj());
1034
1035         /* clip to expose area */
1036
1037         gdk_cairo_rectangle (cr, &ev->area);
1038         cairo_clip (cr);
1039
1040         cairo_pattern_t* pattern;
1041         const MeterMatricsMapKey key (mma->get_name(), type, types_to_bit(types));
1042         MetricPatternMap::iterator i = metric_patterns.find (key);
1043
1044         if (i == metric_patterns.end()) {
1045                 pattern = meter_render_metrics (*mma, type, types);
1046                 metric_patterns[key] = pattern;
1047         } else {
1048                 pattern = i->second;
1049         }
1050
1051         cairo_move_to (cr, 0, 0);
1052         cairo_set_source (cr, pattern);
1053
1054         gint width, height;
1055         win->get_size (width, height);
1056
1057         cairo_rectangle (cr, 0, 0, width, height);
1058         cairo_fill (cr);
1059
1060         cairo_destroy (cr);
1061
1062         return true;
1063 }
1064
1065 void
1066 ArdourMeter::meter_clear_pattern_cache(int which) {
1067         MetricPatternMap::iterator i = metric_patterns.begin();
1068         MetricPatternMap::iterator j = ticks_patterns.begin();
1069
1070         while (i != metric_patterns.end()) {
1071                 int m = 4;
1072                 MeterMatricsMapKey const * const key = &(i->first);
1073                 std::string n = key->_n;
1074                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
1075                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1076                 if (which & m) {
1077                         cairo_pattern_destroy(i->second);
1078                         metric_patterns.erase(i++);
1079                 } else {
1080                         ++i;
1081                 }
1082         }
1083
1084         while (j != ticks_patterns.end()) {
1085                 int m = 4;
1086                 MeterMatricsMapKey const * const key = &(j->first);
1087                 std::string n = key->_n;
1088                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
1089                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1090                 if (which & m) {
1091                         cairo_pattern_destroy(j->second);
1092                         ticks_patterns.erase(j++);
1093                 } else {
1094                         ++j;
1095                 }
1096         }
1097         RedrawMetrics();
1098 }