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 sigc::signal<void> ArdourMeter::ResetAllPeakDisplays;
  43 sigc::signal<void,ARDOUR::Route*> ArdourMeter::ResetRoutePeakDisplays;
  44 sigc::signal<void,ARDOUR::RouteGroup*> ArdourMeter::ResetGroupPeakDisplays;
  45 sigc::signal<void> ArdourMeter::RedrawMetrics;
  46
  47 sigc::signal<void, int, ARDOUR::RouteGroup*, ARDOUR::MeterType> ArdourMeter::SetMeterTypeMulti;
  48
  49 namespace ArdourMeter {
  50         typedef std::map<std::string,cairo_pattern_t*> TickPatterns;
  51         typedef std::map<std::string,cairo_pattern_t*> MetricPatterns;
  52 }
  53
  54 static ArdourMeter::TickPatterns ticks_patterns;
  55 static ArdourMeter::MetricPatterns metric_patterns;
  56
  57 const std::string
  58 ArdourMeter::meter_type_string (ARDOUR::MeterType mt)
  59 {
  60         switch (mt) {
  61                 case MeterPeak:
  62                         return _("Peak");
  63                         break;
  64                 case MeterKrms:
  65                         return _("RMS + Peak");
  66                         break;
  67                 case MeterIEC1:
  68                         return _("DIN");
  69                         break;
  70                 case MeterIEC2:
  71                         return _("EBU/BBC");
  72                         break;
  73                 case MeterVU:
  74                         return _("VU");
  75                         break;
  76                 default:
  77                         return _("???");
  78                         break;
  79         }
  80 }
  81
  82 static cairo_pattern_t*
  83 meter_render_ticks (Gtk::Widget& w, vector<ARDOUR::DataType> types)
  84 {
  85         Glib::RefPtr<Gdk::Window> win (w.get_window());
  86
  87         bool background;
  88         gint width, height;
  89         win->get_size (width, height);
  90         background = types.size() == 0
  91                 || w.get_name().substr(w.get_name().length() - 4) == "Left"
  92                 || w.get_name().substr(w.get_name().length() - 5) == "Right";
  93
  94         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
  95         cairo_t* cr = cairo_create (surface);
  96
  97         cairo_move_to (cr, 0, 0);
  98         cairo_rectangle (cr, 0, 0, width, height);
  99         {
 100                 Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
 101                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 102         }
 103         cairo_fill (cr);
 104
 105         height = min(max_pattern_metric_size, height);
 106         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 107
 108         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 109
 110                 Gdk::Color c;
 111                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 112
 113                 if (types.size() > 1) {
 114                         /* we're overlaying more than 1 set of marks, so use different colours */
 115                         switch (*i) {
 116                         case DataType::AUDIO:
 117                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 118                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 119                                 break;
 120                         case DataType::MIDI:
 121                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 122                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 123                                 break;
 124                         }
 125                 } else {
 126                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 127                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 128                 }
 129
 130                 std::map<int,float> points;
 131
 132                 switch (*i) {
 133                 case DataType::AUDIO:
 134                         points.insert (std::pair<int,float>(-60, 0.5));
 135                         points.insert (std::pair<int,float>(-50, 0.5));
 136                         points.insert (std::pair<int,float>(-40, 0.5));
 137                         points.insert (std::pair<int,float>(-30, 0.5));
 138                         if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 139                                 points.insert (std::pair<int,float>(-24, 0.5));
 140                         } else {
 141                                 points.insert (std::pair<int,float>(-25, 0.5));
 142                         }
 143                         points.insert (std::pair<int,float>(-20, 1.0));
 144
 145                         points.insert (std::pair<int,float>(-19, 0.5));
 146                         points.insert (std::pair<int,float>(-18, 1.0));
 147                         points.insert (std::pair<int,float>(-17, 0.5));
 148                         points.insert (std::pair<int,float>(-16, 0.5));
 149                         points.insert (std::pair<int,float>(-15, 1.0));
 150
 151                         points.insert (std::pair<int,float>(-14, 0.5));
 152                         points.insert (std::pair<int,float>(-13, 0.5));
 153                         points.insert (std::pair<int,float>(-12, 0.5));
 154                         points.insert (std::pair<int,float>(-11, 0.5));
 155                         points.insert (std::pair<int,float>(-10, 1.0));
 156
 157                         points.insert (std::pair<int,float>( -9, 0.5));
 158                         points.insert (std::pair<int,float>( -8, 0.5));
 159                         points.insert (std::pair<int,float>( -7, 0.5));
 160                         points.insert (std::pair<int,float>( -6, 0.5));
 161                         points.insert (std::pair<int,float>( -5, 1.0));
 162                         points.insert (std::pair<int,float>( -4, 0.5));
 163                         points.insert (std::pair<int,float>( -3, 0.5));
 164                         points.insert (std::pair<int,float>( -2, 0.5));
 165                         points.insert (std::pair<int,float>( -1, 0.5));
 166
 167                         points.insert (std::pair<int,float>(  0, 1.0));
 168                         points.insert (std::pair<int,float>(  1, 0.5));
 169                         points.insert (std::pair<int,float>(  2, 0.5));
 170                         points.insert (std::pair<int,float>(  3, 0.5));
 171                         points.insert (std::pair<int,float>(  4, 0.5));
 172                         points.insert (std::pair<int,float>(  5, 0.5));
 173                         break;
 174
 175                 case DataType::MIDI:
 176                         points.insert (std::pair<int,float>(  0, 1.0));
 177                         points.insert (std::pair<int,float>( 16, 0.5));
 178                         points.insert (std::pair<int,float>( 32, 0.5));
 179                         points.insert (std::pair<int,float>( 48, 0.5));
 180                         points.insert (std::pair<int,float>( 64, 1.0));
 181                         points.insert (std::pair<int,float>( 80, 0.5));
 182                         points.insert (std::pair<int,float>( 96, 0.5));
 183                         points.insert (std::pair<int,float>(100, 1.0));
 184                         points.insert (std::pair<int,float>(112, 0.5));
 185                         points.insert (std::pair<int,float>(127, 1.0));
 186                         break;
 187                 }
 188
 189                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 190                         cairo_set_line_width (cr, (j->second));
 191
 192                         float fraction = 0;
 193                         gint pos;
 194
 195                         switch (*i) {
 196                         case DataType::AUDIO:
 197                                 if (j->first >= 0 || j->first == -9) {
 198                                         cairo_set_source_rgb (cr,
 199                                                         UINT_RGBA_R_FLT(peakcolor),
 200                                                         UINT_RGBA_G_FLT(peakcolor),
 201                                                         UINT_RGBA_B_FLT(peakcolor));
 202                                 } else {
 203                                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 204                                 }
 205                                 fraction = log_meter (j->first);
 206                                 pos = height - (gint) floor (height * fraction);
 207                                 cairo_move_to(cr, 0, pos + .5);
 208                                 cairo_line_to(cr, 3, pos + .5);
 209                                 cairo_stroke (cr);
 210                                 break;
 211                         case DataType::MIDI:
 212                                 fraction = (j->first) / 127.0;
 213                                 pos = 1 + height - (gint) floor (height * fraction);
 214                                 pos = min (pos, height);
 215                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 216                                 cairo_fill(cr);
 217                                 break;
 218                         }
 219                 }
 220         }
 221
 222         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 223
 224         cairo_destroy (cr);
 225         cairo_surface_destroy (surface);
 226
 227         return pattern;
 228 }
 229
 230
 231 static cairo_pattern_t*
 232 meter_render_metrics (Gtk::Widget& w, vector<DataType> types)
 233 {
 234         Glib::RefPtr<Gdk::Window> win (w.get_window());
 235
 236         bool tickleft, tickright;
 237         bool background;
 238         gint width, height;
 239         win->get_size (width, height);
 240
 241         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 242         tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
 243         background = types.size() == 0 || tickleft || tickright;
 244
 245         if (!tickleft && !tickright) {
 246                 tickright = true;
 247         }
 248
 249         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 250         cairo_t* cr = cairo_create (surface);
 251         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 252
 253         Pango::AttrList audio_font_attributes;
 254         Pango::AttrList midi_font_attributes;
 255         Pango::AttrList unit_font_attributes;
 256
 257         Pango::AttrFontDesc* font_attr;
 258         Pango::FontDescription font;
 259
 260         font = Pango::FontDescription ("ArdourMono");
 261         double fixfontsize = 81920.0 / (double) ARDOUR::Config->get_font_scale();
 262
 263         font.set_weight (Pango::WEIGHT_NORMAL);
 264         font.set_size (9.0 * PANGO_SCALE * fixfontsize);
 265         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 266         audio_font_attributes.change (*font_attr);
 267         delete font_attr;
 268
 269         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 270         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 271         font.set_size (8.0 * PANGO_SCALE * fixfontsize);
 272         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 273         midi_font_attributes.change (*font_attr);
 274         delete font_attr;
 275
 276         font.set_size (6.0 * PANGO_SCALE * fixfontsize);
 277         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 278         unit_font_attributes.change (*font_attr);
 279         delete font_attr;
 280
 281         cairo_move_to (cr, 0, 0);
 282         cairo_rectangle (cr, 0, 0, width, height);
 283         {
 284                 Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
 285                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 286         }
 287         cairo_fill (cr);
 288
 289         height = min(max_pattern_metric_size, height);
 290         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 291
 292         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 293
 294                 Gdk::Color c;
 295
 296                 if (types.size() > 1) {
 297                         /* we're overlaying more than 1 set of marks, so use different colours */
 298                         Gdk::Color c;
 299                         switch (*i) {
 300                         case DataType::AUDIO:
 301                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 302                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 303                                 break;
 304                         case DataType::MIDI:
 305                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 306                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 307                                 break;
 308                         }
 309                 } else {
 310                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 311                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 312                 }
 313
 314                 std::map<int,float> points;
 315
 316                 switch (*i) {
 317                 case DataType::AUDIO:
 318                         layout->set_attributes (audio_font_attributes);
 319                         points.insert (std::pair<int,float>(-50, 0.5));
 320                         points.insert (std::pair<int,float>(-40, 0.5));
 321                         points.insert (std::pair<int,float>(-30, 0.5));
 322                         points.insert (std::pair<int,float>(-20, 1.0));
 323                         if (types.size() == 1) {
 324                                 if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 325                                         points.insert (std::pair<int,float>(-24, 0.5));
 326                                 } else {
 327                                         points.insert (std::pair<int,float>(-25, 0.5));
 328                                 }
 329                                 points.insert (std::pair<int,float>(-15, 1.0));
 330                         }
 331                         points.insert (std::pair<int,float>(-18, 1.0));
 332                         points.insert (std::pair<int,float>(-10, 1.0));
 333                         points.insert (std::pair<int,float>( -5, 1.0));
 334                         points.insert (std::pair<int,float>( -3, 0.5));
 335                         points.insert (std::pair<int,float>(  0, 1.0));
 336                         points.insert (std::pair<int,float>(  3, 0.5));
 337                         break;
 338
 339                 case DataType::MIDI:
 340                         layout->set_attributes (midi_font_attributes);
 341                         points.insert (std::pair<int,float>(  0, 1.0));
 342                         if (types.size() == 1) {
 343                                 points.insert (std::pair<int,float>( 16, 0.5));
 344                                 points.insert (std::pair<int,float>( 32, 0.5));
 345                                 points.insert (std::pair<int,float>( 48, 0.5));
 346                                 points.insert (std::pair<int,float>( 64, 1.0));
 347                                 points.insert (std::pair<int,float>( 80, 0.5));
 348                                 points.insert (std::pair<int,float>( 96, 0.5));
 349                                 points.insert (std::pair<int,float>(100, 0.5));
 350                                 points.insert (std::pair<int,float>(112, 0.5));
 351                         } else {
 352                                 /* labels that don't overlay with dB */
 353                                 points.insert (std::pair<int,float>( 24, 0.5));
 354                                 points.insert (std::pair<int,float>( 48, 0.5));
 355                                 points.insert (std::pair<int,float>( 72, 0.5));
 356                         }
 357                         points.insert (std::pair<int,float>(127, 1.0));
 358                         break;
 359                 }
 360
 361                 char buf[32];
 362                 gint pos;
 363
 364                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 365
 366                         float fraction = 0;
 367                         switch (*i) {
 368                         case DataType::AUDIO:
 369                                 cairo_set_line_width (cr, (j->second));
 370                                 if (j->first >= 0) {
 371                                         cairo_set_source_rgb (cr,
 372                                                         UINT_RGBA_R_FLT(peakcolor),
 373                                                         UINT_RGBA_G_FLT(peakcolor),
 374                                                         UINT_RGBA_B_FLT(peakcolor));
 375                                 }
 376                                 fraction = log_meter (j->first);
 377                                 snprintf (buf, sizeof (buf), "%+2d", j->first);
 378                                 pos = height - (gint) floor (height * fraction);
 379                                 if (tickleft) {
 380                                         cairo_move_to(cr, width-1.5, pos + .5);
 381                                         cairo_line_to(cr, width, pos + .5);
 382                                         cairo_stroke (cr);
 383                                 } else if (tickright) {
 384                                         cairo_move_to(cr, 0, pos + .5);
 385                                         cairo_line_to(cr, 1.5, pos + .5);
 386                                         cairo_stroke (cr);
 387                                 }
 388                                 break;
 389                         case DataType::MIDI:
 390                                 cairo_set_line_width (cr, 1.0);
 391                                 fraction = (j->first) / 127.0;
 392                                 snprintf (buf, sizeof (buf), "%3d", j->first);
 393                                 pos = 1 + height - (gint) rintf (height * fraction);
 394                                 pos = min (pos, height);
 395                                 if (tickleft) {
 396                                         cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
 397                                         cairo_fill(cr);
 398                                 } else if (tickright) {
 399                                         cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 400                                         cairo_fill(cr);
 401                                 }
 402                                 break;
 403                         }
 404
 405                         layout->set_text(buf);
 406
 407                         /* we want logical extents, not ink extents here */
 408
 409                         int tw, th;
 410                         layout->get_pixel_size(tw, th);
 411
 412                         int p = pos - (th / 2) - 1;
 413                         p = min (p, height - th);
 414                         p = max (p, 0);
 415
 416                         cairo_move_to (cr, width-3-tw, p);
 417                         pango_cairo_show_layout (cr, layout->gobj());
 418                 }
 419         }
 420
 421         if (types.size() == 1) {
 422                 int tw, th;
 423                 layout->set_attributes (unit_font_attributes);
 424                 switch (types.at(0)) {
 425                         case DataType::AUDIO:
 426                                 layout->set_text("dBFS");
 427                                 layout->get_pixel_size(tw, th);
 428                                 break;
 429                         case DataType::MIDI:
 430                                 layout->set_text("vel");
 431                                 layout->get_pixel_size(tw, th);
 432                                 break;
 433                 }
 434                 Gdk::Color c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 435                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 436                 cairo_move_to (cr, 2, height - th - 1.5);
 437                 pango_cairo_show_layout (cr, layout->gobj());
 438         }
 439
 440         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 441
 442         cairo_destroy (cr);
 443         cairo_surface_destroy (surface);
 444
 445         return pattern;
 446 }
 447
 448
 449 gint
 450 ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
 451 {
 452         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 453         cairo_t* cr;
 454
 455         cr = gdk_cairo_create (win->gobj());
 456
 457         /* clip to expose area */
 458
 459         gdk_cairo_rectangle (cr, &ev->area);
 460         cairo_clip (cr);
 461
 462         cairo_pattern_t* pattern;
 463         TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
 464
 465         if (i == ticks_patterns.end()) {
 466                 pattern = meter_render_ticks (*mta, types);
 467                 ticks_patterns[mta->get_name()] = pattern;
 468         } else {
 469                 pattern = i->second;
 470         }
 471
 472         cairo_move_to (cr, 0, 0);
 473         cairo_set_source (cr, pattern);
 474
 475         gint width, height;
 476         win->get_size (width, height);
 477
 478         cairo_rectangle (cr, 0, 0, width, height);
 479         cairo_fill (cr);
 480
 481         cairo_destroy (cr);
 482
 483         return true;
 484 }
 485
 486 gint
 487 ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
 488 {
 489         Glib::RefPtr<Gdk::Window> win (mma->get_window());
 490         cairo_t* cr;
 491
 492         cr = gdk_cairo_create (win->gobj());
 493
 494         /* clip to expose area */
 495
 496         gdk_cairo_rectangle (cr, &ev->area);
 497         cairo_clip (cr);
 498
 499         cairo_pattern_t* pattern;
 500         MetricPatterns::iterator i = metric_patterns.find (mma->get_name());
 501
 502         if (i == metric_patterns.end()) {
 503                 pattern = meter_render_metrics (*mma, types);
 504                 metric_patterns[mma->get_name()] = pattern;
 505         } else {
 506                 pattern = i->second;
 507         }
 508
 509         cairo_move_to (cr, 0, 0);
 510         cairo_set_source (cr, pattern);
 511
 512         gint width, height;
 513         win->get_size (width, height);
 514
 515         cairo_rectangle (cr, 0, 0, width, height);
 516         cairo_fill (cr);
 517
 518         cairo_destroy (cr);
 519
 520         return true;
 521 }
 522
 523 void
 524 ArdourMeter::meter_clear_pattern_cache(int which) {
 525         MetricPatterns::iterator i = metric_patterns.begin();
 526         TickPatterns::iterator j = ticks_patterns.begin();
 527
 528         while (i != metric_patterns.end()) {
 529                 int m = 4;
 530                 std::string n = i->first;
 531                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 532                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 533                 if (which & m) {
 534                         cairo_pattern_destroy(i->second);
 535                         metric_patterns.erase(i++);
 536                 } else {
 537                         ++i;
 538                 }
 539         }
 540
 541         while (j != ticks_patterns.end()) {
 542                 int m = 4;
 543                 std::string n = j->first;
 544                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 545                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 546                 if (which & m) {
 547                         cairo_pattern_destroy(j->second);
 548                         ticks_patterns.erase(j++);
 549                 } else {
 550                         ++j;
 551                 }
 552         }
 553         RedrawMetrics();
 554 }