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
  58 static cairo_pattern_t*
  59 meter_render_ticks (Gtk::Widget& w, vector<ARDOUR::DataType> types)
  60 {
  61         Glib::RefPtr<Gdk::Window> win (w.get_window());
  62
  63         bool background;
  64         gint width, height;
  65         win->get_size (width, height);
  66         background = types.size() == 0
  67                 || w.get_name().substr(w.get_name().length() - 4) == "Left"
  68                 || w.get_name().substr(w.get_name().length() - 5) == "Right";
  69
  70         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
  71         cairo_t* cr = cairo_create (surface);
  72
  73         cairo_move_to (cr, 0, 0);
  74         cairo_rectangle (cr, 0, 0, width, height);
  75         {
  76                 Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
  77                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  78         }
  79         cairo_fill (cr);
  80
  81         height = min(max_pattern_metric_size, height);
  82         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
  83
  84         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
  85
  86                 Gdk::Color c;
  87                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
  88
  89                 if (types.size() > 1) {
  90                         /* we're overlaying more than 1 set of marks, so use different colours */
  91                         switch (*i) {
  92                         case DataType::AUDIO:
  93                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
  94                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  95                                 break;
  96                         case DataType::MIDI:
  97                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
  98                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  99                                 break;
 100                         }
 101                 } else {
 102                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 103                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 104                 }
 105
 106                 std::map<int,float> points;
 107
 108                 switch (*i) {
 109                 case DataType::AUDIO:
 110                         points.insert (std::pair<int,float>(-60, 0.5));
 111                         points.insert (std::pair<int,float>(-50, 0.5));
 112                         points.insert (std::pair<int,float>(-40, 0.5));
 113                         points.insert (std::pair<int,float>(-30, 0.5));
 114                         if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 115                                 points.insert (std::pair<int,float>(-24, 0.5));
 116                         } else {
 117                                 points.insert (std::pair<int,float>(-25, 0.5));
 118                         }
 119                         points.insert (std::pair<int,float>(-20, 1.0));
 120
 121                         points.insert (std::pair<int,float>(-19, 0.5));
 122                         points.insert (std::pair<int,float>(-18, 1.0));
 123                         points.insert (std::pair<int,float>(-17, 0.5));
 124                         points.insert (std::pair<int,float>(-16, 0.5));
 125                         points.insert (std::pair<int,float>(-15, 1.0));
 126
 127                         points.insert (std::pair<int,float>(-14, 0.5));
 128                         points.insert (std::pair<int,float>(-13, 0.5));
 129                         points.insert (std::pair<int,float>(-12, 0.5));
 130                         points.insert (std::pair<int,float>(-11, 0.5));
 131                         points.insert (std::pair<int,float>(-10, 1.0));
 132
 133                         points.insert (std::pair<int,float>( -9, 0.5));
 134                         points.insert (std::pair<int,float>( -8, 0.5));
 135                         points.insert (std::pair<int,float>( -7, 0.5));
 136                         points.insert (std::pair<int,float>( -6, 0.5));
 137                         points.insert (std::pair<int,float>( -5, 1.0));
 138                         points.insert (std::pair<int,float>( -4, 0.5));
 139                         points.insert (std::pair<int,float>( -3, 0.5));
 140                         points.insert (std::pair<int,float>( -2, 0.5));
 141                         points.insert (std::pair<int,float>( -1, 0.5));
 142
 143                         points.insert (std::pair<int,float>(  0, 1.0));
 144                         points.insert (std::pair<int,float>(  1, 0.5));
 145                         points.insert (std::pair<int,float>(  2, 0.5));
 146                         points.insert (std::pair<int,float>(  3, 0.5));
 147                         points.insert (std::pair<int,float>(  4, 0.5));
 148                         points.insert (std::pair<int,float>(  5, 0.5));
 149                         break;
 150
 151                 case DataType::MIDI:
 152                         points.insert (std::pair<int,float>(  0, 1.0));
 153                         points.insert (std::pair<int,float>( 16, 0.5));
 154                         points.insert (std::pair<int,float>( 32, 0.5));
 155                         points.insert (std::pair<int,float>( 48, 0.5));
 156                         points.insert (std::pair<int,float>( 64, 1.0));
 157                         points.insert (std::pair<int,float>( 80, 0.5));
 158                         points.insert (std::pair<int,float>( 96, 0.5));
 159                         points.insert (std::pair<int,float>(100, 1.0));
 160                         points.insert (std::pair<int,float>(112, 0.5));
 161                         points.insert (std::pair<int,float>(127, 1.0));
 162                         break;
 163                 }
 164
 165                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 166                         cairo_set_line_width (cr, (j->second));
 167
 168                         float fraction = 0;
 169                         gint pos;
 170
 171                         switch (*i) {
 172                         case DataType::AUDIO:
 173                                 if (j->first >= 0 || j->first == -9) {
 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                                 fraction = log_meter (j->first);
 182                                 pos = height - (gint) floor (height * fraction);
 183                                 cairo_move_to(cr, 0, pos + .5);
 184                                 cairo_line_to(cr, 3, pos + .5);
 185                                 cairo_stroke (cr);
 186                                 break;
 187                         case DataType::MIDI:
 188                                 fraction = (j->first) / 127.0;
 189                                 pos = 1 + height - (gint) floor (height * fraction);
 190                                 pos = min (pos, height);
 191                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 192                                 cairo_fill(cr);
 193                                 break;
 194                         }
 195                 }
 196         }
 197
 198         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 199
 200         cairo_destroy (cr);
 201         cairo_surface_destroy (surface);
 202
 203         return pattern;
 204 }
 205
 206
 207 static cairo_pattern_t*
 208 meter_render_metrics (Gtk::Widget& w, vector<DataType> types)
 209 {
 210         Glib::RefPtr<Gdk::Window> win (w.get_window());
 211
 212         bool tickleft;
 213         bool background;
 214         gint width, height;
 215         win->get_size (width, height);
 216
 217         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 218         background = types.size() == 0 || tickleft || w.get_name().substr(w.get_name().length() - 5) == "Right";
 219
 220         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 221         cairo_t* cr = cairo_create (surface);
 222         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 223
 224         Pango::AttrList audio_font_attributes;
 225         Pango::AttrList midi_font_attributes;
 226         Pango::AttrList unit_font_attributes;
 227
 228         Pango::AttrFontDesc* font_attr;
 229         Pango::FontDescription font;
 230
 231         font = Pango::FontDescription (""); // use defaults
 232         //font = get_font_for_style("gain-fader");
 233         //font = w.get_style()->get_font();
 234
 235         font.set_weight (Pango::WEIGHT_NORMAL);
 236         font.set_size (9.0 * PANGO_SCALE);
 237         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 238         audio_font_attributes.change (*font_attr);
 239         delete font_attr;
 240
 241         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 242         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 243         font.set_size (7.5 * PANGO_SCALE);
 244         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 245         midi_font_attributes.change (*font_attr);
 246         delete font_attr;
 247
 248         font.set_size (7.0 * PANGO_SCALE);
 249         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 250         unit_font_attributes.change (*font_attr);
 251         delete font_attr;
 252
 253         cairo_move_to (cr, 0, 0);
 254         cairo_rectangle (cr, 0, 0, width, height);
 255         {
 256                 Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
 257                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 258         }
 259         cairo_fill (cr);
 260
 261         height = min(max_pattern_metric_size, height);
 262         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 263
 264         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 265
 266                 Gdk::Color c;
 267
 268                 if (types.size() > 1) {
 269                         /* we're overlaying more than 1 set of marks, so use different colours */
 270                         Gdk::Color c;
 271                         switch (*i) {
 272                         case DataType::AUDIO:
 273                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 274                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 275                                 break;
 276                         case DataType::MIDI:
 277                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 278                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 279                                 break;
 280                         }
 281                 } else {
 282                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 283                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 284                 }
 285
 286                 std::map<int,float> points;
 287
 288                 switch (*i) {
 289                 case DataType::AUDIO:
 290                         layout->set_attributes (audio_font_attributes);
 291                         points.insert (std::pair<int,float>(-50, 0.5));
 292                         points.insert (std::pair<int,float>(-40, 0.5));
 293                         points.insert (std::pair<int,float>(-30, 0.5));
 294                         points.insert (std::pair<int,float>(-20, 1.0));
 295                         if (types.size() == 1) {
 296                                 if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 297                                         points.insert (std::pair<int,float>(-24, 0.5));
 298                                 } else {
 299                                         points.insert (std::pair<int,float>(-25, 0.5));
 300                                 }
 301                                 points.insert (std::pair<int,float>(-15, 1.0));
 302                         }
 303                         points.insert (std::pair<int,float>(-18, 1.0));
 304                         points.insert (std::pair<int,float>(-10, 1.0));
 305                         points.insert (std::pair<int,float>( -5, 1.0));
 306                         points.insert (std::pair<int,float>( -3, 0.5));
 307                         points.insert (std::pair<int,float>(  0, 1.0));
 308                         points.insert (std::pair<int,float>(  3, 0.5));
 309                         break;
 310
 311                 case DataType::MIDI:
 312                         layout->set_attributes (midi_font_attributes);
 313                         points.insert (std::pair<int,float>(  0, 1.0));
 314                         if (types.size() == 1) {
 315                                 points.insert (std::pair<int,float>( 16, 0.5));
 316                                 points.insert (std::pair<int,float>( 32, 0.5));
 317                                 points.insert (std::pair<int,float>( 48, 0.5));
 318                                 points.insert (std::pair<int,float>( 64, 1.0));
 319                                 points.insert (std::pair<int,float>( 80, 0.5));
 320                                 points.insert (std::pair<int,float>( 96, 0.5));
 321                                 points.insert (std::pair<int,float>(100, 0.5));
 322                                 points.insert (std::pair<int,float>(112, 0.5));
 323                         } else {
 324                                 /* labels that don't overlay with dB */
 325                                 points.insert (std::pair<int,float>( 24, 0.5));
 326                                 points.insert (std::pair<int,float>( 48, 0.5));
 327                                 points.insert (std::pair<int,float>( 72, 0.5));
 328                         }
 329                         points.insert (std::pair<int,float>(127, 1.0));
 330                         break;
 331                 }
 332
 333                 char buf[32];
 334                 gint pos;
 335
 336                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 337
 338                         float fraction = 0;
 339                         switch (*i) {
 340                         case DataType::AUDIO:
 341                                 cairo_set_line_width (cr, (j->second));
 342                                 if (j->first >= 0) {
 343                                         cairo_set_source_rgb (cr,
 344                                                         UINT_RGBA_R_FLT(peakcolor),
 345                                                         UINT_RGBA_G_FLT(peakcolor),
 346                                                         UINT_RGBA_B_FLT(peakcolor));
 347                                 }
 348                                 fraction = log_meter (j->first);
 349                                 snprintf (buf, sizeof (buf), "%+2d", j->first);
 350                                 pos = height - (gint) floor (height * fraction);
 351                                 if (tickleft) {
 352                                         cairo_move_to(cr, width-2.5, pos + .5);
 353                                         cairo_line_to(cr, width, pos + .5);
 354                                 } else {
 355                                         cairo_move_to(cr, 0, pos + .5);
 356                                         cairo_line_to(cr, 2.5, pos + .5);
 357                                 }
 358                                 cairo_stroke (cr);
 359                                 break;
 360                         case DataType::MIDI:
 361                                 cairo_set_line_width (cr, 1.0);
 362                                 fraction = (j->first) / 127.0;
 363                                 snprintf (buf, sizeof (buf), "%3d", j->first);
 364                                 pos = 1 + height - (gint) rintf (height * fraction);
 365                                 pos = min (pos, height);
 366                                 if (tickleft) {
 367                                         cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
 368                                 } else {
 369                                         cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 370                                 }
 371                                 cairo_fill(cr);
 372                                 break;
 373                         }
 374
 375                         layout->set_text(buf);
 376
 377                         /* we want logical extents, not ink extents here */
 378
 379                         int tw, th;
 380                         layout->get_pixel_size(tw, th);
 381
 382                         int p = pos - (th / 2);
 383                         p = min (p, height - th);
 384                         p = max (p, 0);
 385
 386                         cairo_move_to (cr, width-4-tw, p);
 387                         pango_cairo_show_layout (cr, layout->gobj());
 388                 }
 389         }
 390
 391         if (types.size() == 1) {
 392                 int tw, th;
 393                 layout->set_attributes (unit_font_attributes);
 394                 switch (types.at(0)) {
 395                         case DataType::AUDIO:
 396                                 layout->set_text("dBFS");
 397                                 layout->get_pixel_size(tw, th);
 398                                 break;
 399                         case DataType::MIDI:
 400                                 layout->set_text("vel");
 401                                 layout->get_pixel_size(tw, th);
 402                                 break;
 403                 }
 404                 Gdk::Color c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 405                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 406                 cairo_move_to (cr, 2, height - th - 1.5);
 407                 pango_cairo_show_layout (cr, layout->gobj());
 408         }
 409
 410         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 411
 412         cairo_destroy (cr);
 413         cairo_surface_destroy (surface);
 414
 415         return pattern;
 416 }
 417
 418
 419 gint
 420 ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
 421 {
 422         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 423         cairo_t* cr;
 424
 425         cr = gdk_cairo_create (win->gobj());
 426
 427         /* clip to expose area */
 428
 429         gdk_cairo_rectangle (cr, &ev->area);
 430         cairo_clip (cr);
 431
 432         cairo_pattern_t* pattern;
 433         TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
 434
 435         if (i == ticks_patterns.end()) {
 436                 pattern = meter_render_ticks (*mta, types);
 437                 ticks_patterns[mta->get_name()] = pattern;
 438         } else {
 439                 pattern = i->second;
 440         }
 441
 442         cairo_move_to (cr, 0, 0);
 443         cairo_set_source (cr, pattern);
 444
 445         gint width, height;
 446         win->get_size (width, height);
 447
 448         cairo_rectangle (cr, 0, 0, width, height);
 449         cairo_fill (cr);
 450
 451         cairo_destroy (cr);
 452
 453         return true;
 454 }
 455
 456 gint
 457 ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
 458 {
 459         Glib::RefPtr<Gdk::Window> win (mma->get_window());
 460         cairo_t* cr;
 461
 462         cr = gdk_cairo_create (win->gobj());
 463
 464         /* clip to expose area */
 465
 466         gdk_cairo_rectangle (cr, &ev->area);
 467         cairo_clip (cr);
 468
 469         cairo_pattern_t* pattern;
 470         MetricPatterns::iterator i = metric_patterns.find (mma->get_name());
 471
 472         if (i == metric_patterns.end()) {
 473                 pattern = meter_render_metrics (*mma, types);
 474                 metric_patterns[mma->get_name()] = pattern;
 475         } else {
 476                 pattern = i->second;
 477         }
 478
 479         cairo_move_to (cr, 0, 0);
 480         cairo_set_source (cr, pattern);
 481
 482         gint width, height;
 483         win->get_size (width, height);
 484
 485         cairo_rectangle (cr, 0, 0, width, height);
 486         cairo_fill (cr);
 487
 488         cairo_destroy (cr);
 489
 490         return true;
 491 }
 492
 493 void
 494 ArdourMeter::meter_clear_pattern_cache(int which) {
 495         MetricPatterns::iterator i = metric_patterns.begin();
 496         TickPatterns::iterator j = ticks_patterns.begin();
 497
 498         while (i != metric_patterns.end()) {
 499                 int m = 4;
 500                 std::string n = i->first;
 501                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 502                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 503                 if (which & m) {
 504                         cairo_pattern_destroy(i->second);
 505                         metric_patterns.erase(i++);
 506                 } else {
 507                         ++i;
 508                 }
 509         }
 510
 511         while (j != ticks_patterns.end()) {
 512                 int m = 4;
 513                 std::string n = j->first;
 514                 if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 515                 if (n.substr(n.length() - 5) == "Right") { m = 2; }
 516                 if (which & m) {
 517                         cairo_pattern_destroy(j->second);
 518                         ticks_patterns.erase(j++);
 519                 } else {
 520                         ++j;
 521                 }
 522         }
 523         RedrawMetrics();
 524 }