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
  39
  40 static const int max_pattern_metric_size = 1026;
  41
  42 sigc::signal<void> ResetAllPeakDisplays;
  43 sigc::signal<void,ARDOUR::Route*> ResetRoutePeakDisplays;
  44 sigc::signal<void,ARDOUR::RouteGroup*> ResetGroupPeakDisplays;
  45 sigc::signal<void> RedrawMetrics;
  46
  47 cairo_pattern_t*
  48 meter_render_ticks (Gtk::Widget& w, vector<ARDOUR::DataType> types)
  49 {
  50         Glib::RefPtr<Gdk::Window> win (w.get_window());
  51
  52         bool background;
  53         gint width, height;
  54         win->get_size (width, height);
  55         background = types.size() == 0
  56                 || w.get_name().substr(w.get_name().length() - 4) == "Left"
  57                 || w.get_name().substr(w.get_name().length() - 5) == "Right";
  58
  59         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
  60         cairo_t* cr = cairo_create (surface);
  61
  62         cairo_move_to (cr, 0, 0);
  63         cairo_rectangle (cr, 0, 0, width, height);
  64         {
  65                 Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
  66                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  67         }
  68         cairo_fill (cr);
  69
  70         height = min(max_pattern_metric_size, height);
  71         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
  72
  73         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
  74
  75                 Gdk::Color c;
  76                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
  77
  78                 if (types.size() > 1) {
  79                         /* we're overlaying more than 1 set of marks, so use different colours */
  80                         switch (*i) {
  81                         case DataType::AUDIO:
  82                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
  83                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  84                                 break;
  85                         case DataType::MIDI:
  86                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
  87                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  88                                 break;
  89                         }
  90                 } else {
  91                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
  92                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
  93                 }
  94
  95                 std::map<int,float> points;
  96
  97                 switch (*i) {
  98                 case DataType::AUDIO:
  99                         points.insert (std::pair<int,float>(-60, 0.5));
 100                         points.insert (std::pair<int,float>(-50, 0.5));
 101                         points.insert (std::pair<int,float>(-40, 0.5));
 102                         points.insert (std::pair<int,float>(-30, 0.5));
 103                         if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 104                                 points.insert (std::pair<int,float>(-24, 0.5));
 105                         } else {
 106                                 points.insert (std::pair<int,float>(-25, 0.5));
 107                         }
 108                         points.insert (std::pair<int,float>(-20, 1.0));
 109
 110                         points.insert (std::pair<int,float>(-19, 0.5));
 111                         points.insert (std::pair<int,float>(-18, 1.0));
 112                         points.insert (std::pair<int,float>(-17, 0.5));
 113                         points.insert (std::pair<int,float>(-16, 0.5));
 114                         points.insert (std::pair<int,float>(-15, 1.0));
 115
 116                         points.insert (std::pair<int,float>(-14, 0.5));
 117                         points.insert (std::pair<int,float>(-13, 0.5));
 118                         points.insert (std::pair<int,float>(-12, 0.5));
 119                         points.insert (std::pair<int,float>(-11, 0.5));
 120                         points.insert (std::pair<int,float>(-10, 1.0));
 121
 122                         points.insert (std::pair<int,float>( -9, 0.5));
 123                         points.insert (std::pair<int,float>( -8, 0.5));
 124                         points.insert (std::pair<int,float>( -7, 0.5));
 125                         points.insert (std::pair<int,float>( -6, 0.5));
 126                         points.insert (std::pair<int,float>( -5, 1.0));
 127                         points.insert (std::pair<int,float>( -4, 0.5));
 128                         points.insert (std::pair<int,float>( -3, 0.5));
 129                         points.insert (std::pair<int,float>( -2, 0.5));
 130                         points.insert (std::pair<int,float>( -1, 0.5));
 131
 132                         points.insert (std::pair<int,float>(  0, 1.0));
 133                         points.insert (std::pair<int,float>(  1, 0.5));
 134                         points.insert (std::pair<int,float>(  2, 0.5));
 135                         points.insert (std::pair<int,float>(  3, 0.5));
 136                         points.insert (std::pair<int,float>(  4, 0.5));
 137                         points.insert (std::pair<int,float>(  5, 0.5));
 138                         break;
 139
 140                 case DataType::MIDI:
 141                         points.insert (std::pair<int,float>(  0, 1.0));
 142                         points.insert (std::pair<int,float>( 16, 0.5));
 143                         points.insert (std::pair<int,float>( 32, 0.5));
 144                         points.insert (std::pair<int,float>( 48, 0.5));
 145                         points.insert (std::pair<int,float>( 64, 1.0));
 146                         points.insert (std::pair<int,float>( 80, 0.5));
 147                         points.insert (std::pair<int,float>( 96, 0.5));
 148                         points.insert (std::pair<int,float>(100, 1.0));
 149                         points.insert (std::pair<int,float>(112, 0.5));
 150                         points.insert (std::pair<int,float>(127, 1.0));
 151                         break;
 152                 }
 153
 154                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 155                         cairo_set_line_width (cr, (j->second));
 156
 157                         float fraction = 0;
 158                         gint pos;
 159
 160                         switch (*i) {
 161                         case DataType::AUDIO:
 162                                 if (j->first >= 0 || j->first == -9) {
 163                                         cairo_set_source_rgb (cr,
 164                                                         UINT_RGBA_R_FLT(peakcolor),
 165                                                         UINT_RGBA_G_FLT(peakcolor),
 166                                                         UINT_RGBA_B_FLT(peakcolor));
 167                                 } else {
 168                                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 169                                 }
 170                                 fraction = log_meter (j->first);
 171                                 pos = height - (gint) floor (height * fraction);
 172                                 cairo_move_to(cr, 0, pos + .5);
 173                                 cairo_line_to(cr, 3, pos + .5);
 174                                 cairo_stroke (cr);
 175                                 break;
 176                         case DataType::MIDI:
 177                                 fraction = (j->first) / 127.0;
 178                                 pos = 1 + height - (gint) floor (height * fraction);
 179                                 pos = min (pos, height);
 180                                 cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
 181                                 cairo_fill(cr);
 182                                 break;
 183                         }
 184                 }
 185         }
 186
 187         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 188
 189         cairo_destroy (cr);
 190         cairo_surface_destroy (surface);
 191
 192         return pattern;
 193 }
 194
 195
 196 cairo_pattern_t*
 197 meter_render_metrics (Gtk::Widget& w, vector<DataType> types)
 198 {
 199         Glib::RefPtr<Gdk::Window> win (w.get_window());
 200
 201         bool tickleft;
 202         bool background;
 203         gint width, height;
 204         win->get_size (width, height);
 205
 206         tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
 207         background = types.size() == 0 || tickleft || w.get_name().substr(w.get_name().length() - 5) == "Right";
 208
 209         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 210         cairo_t* cr = cairo_create (surface);
 211         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 212
 213         Pango::AttrList audio_font_attributes;
 214         Pango::AttrList midi_font_attributes;
 215         Pango::AttrList unit_font_attributes;
 216
 217         Pango::AttrFontDesc* font_attr;
 218         Pango::FontDescription font;
 219
 220         font = Pango::FontDescription (""); // use defaults
 221         //font = get_font_for_style("gain-fader");
 222         //font = w.get_style()->get_font();
 223
 224         font.set_weight (Pango::WEIGHT_NORMAL);
 225         font.set_size (9.0 * PANGO_SCALE);
 226         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 227         audio_font_attributes.change (*font_attr);
 228         delete font_attr;
 229
 230         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 231         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 232         font.set_size (7.5 * PANGO_SCALE);
 233         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 234         midi_font_attributes.change (*font_attr);
 235         delete font_attr;
 236
 237         font.set_size (7.0 * PANGO_SCALE);
 238         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 239         unit_font_attributes.change (*font_attr);
 240         delete font_attr;
 241
 242         cairo_move_to (cr, 0, 0);
 243         cairo_rectangle (cr, 0, 0, width, height);
 244         {
 245                 Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
 246                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 247         }
 248         cairo_fill (cr);
 249
 250         height = min(max_pattern_metric_size, height);
 251         uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 252
 253         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 254
 255                 Gdk::Color c;
 256
 257                 if (types.size() > 1) {
 258                         /* we're overlaying more than 1 set of marks, so use different colours */
 259                         Gdk::Color c;
 260                         switch (*i) {
 261                         case DataType::AUDIO:
 262                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 263                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 264                                 break;
 265                         case DataType::MIDI:
 266                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 267                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 268                                 break;
 269                         }
 270                 } else {
 271                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 272                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 273                 }
 274
 275                 std::map<int,float> points;
 276
 277                 switch (*i) {
 278                 case DataType::AUDIO:
 279                         layout->set_attributes (audio_font_attributes);
 280                         points.insert (std::pair<int,float>(-50, 0.5));
 281                         points.insert (std::pair<int,float>(-40, 0.5));
 282                         points.insert (std::pair<int,float>(-30, 0.5));
 283                         points.insert (std::pair<int,float>(-20, 1.0));
 284                         if (types.size() == 1) {
 285                                 if (Config->get_meter_line_up_level() == MeteringLineUp24) {
 286                                         points.insert (std::pair<int,float>(-24, 0.5));
 287                                 } else {
 288                                         points.insert (std::pair<int,float>(-25, 0.5));
 289                                 }
 290                                 points.insert (std::pair<int,float>(-15, 1.0));
 291                         }
 292                         points.insert (std::pair<int,float>(-18, 1.0));
 293                         points.insert (std::pair<int,float>(-10, 1.0));
 294                         points.insert (std::pair<int,float>( -5, 1.0));
 295                         points.insert (std::pair<int,float>( -3, 0.5));
 296                         points.insert (std::pair<int,float>(  0, 1.0));
 297                         points.insert (std::pair<int,float>(  3, 0.5));
 298                         break;
 299
 300                 case DataType::MIDI:
 301                         layout->set_attributes (midi_font_attributes);
 302                         points.insert (std::pair<int,float>(  0, 1.0));
 303                         if (types.size() == 1) {
 304                                 points.insert (std::pair<int,float>( 16, 0.5));
 305                                 points.insert (std::pair<int,float>( 32, 0.5));
 306                                 points.insert (std::pair<int,float>( 48, 0.5));
 307                                 points.insert (std::pair<int,float>( 64, 1.0));
 308                                 points.insert (std::pair<int,float>( 80, 0.5));
 309                                 points.insert (std::pair<int,float>( 96, 0.5));
 310                                 points.insert (std::pair<int,float>(100, 0.5));
 311                                 points.insert (std::pair<int,float>(112, 0.5));
 312                         } else {
 313                                 /* labels that don't overlay with dB */
 314                                 points.insert (std::pair<int,float>( 24, 0.5));
 315                                 points.insert (std::pair<int,float>( 48, 0.5));
 316                                 points.insert (std::pair<int,float>( 72, 0.5));
 317                         }
 318                         points.insert (std::pair<int,float>(127, 1.0));
 319                         break;
 320                 }
 321
 322                 char buf[32];
 323                 gint pos;
 324
 325                 for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
 326
 327                         float fraction = 0;
 328                         switch (*i) {
 329                         case DataType::AUDIO:
 330                                 cairo_set_line_width (cr, (j->second));
 331                                 if (j->first >= 0) {
 332                                         cairo_set_source_rgb (cr,
 333                                                         UINT_RGBA_R_FLT(peakcolor),
 334                                                         UINT_RGBA_G_FLT(peakcolor),
 335                                                         UINT_RGBA_B_FLT(peakcolor));
 336                                 }
 337                                 fraction = log_meter (j->first);
 338                                 snprintf (buf, sizeof (buf), "%+2d", j->first);
 339                                 pos = height - (gint) floor (height * fraction);
 340                                 if (tickleft) {
 341                                         cairo_move_to(cr, width-2.5, pos + .5);
 342                                         cairo_line_to(cr, width, pos + .5);
 343                                 } else {
 344                                         cairo_move_to(cr, 0, pos + .5);
 345                                         cairo_line_to(cr, 2.5, pos + .5);
 346                                 }
 347                                 cairo_stroke (cr);
 348                                 break;
 349                         case DataType::MIDI:
 350                                 cairo_set_line_width (cr, 1.0);
 351                                 fraction = (j->first) / 127.0;
 352                                 snprintf (buf, sizeof (buf), "%3d", j->first);
 353                                 pos = 1 + height - (gint) rintf (height * fraction);
 354                                 pos = min (pos, height);
 355                                 if (tickleft) {
 356                                         cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
 357                                 } else {
 358                                         cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
 359                                 }
 360                                 cairo_fill(cr);
 361                                 break;
 362                         }
 363
 364                         layout->set_text(buf);
 365
 366                         /* we want logical extents, not ink extents here */
 367
 368                         int tw, th;
 369                         layout->get_pixel_size(tw, th);
 370
 371                         int p = pos - (th / 2);
 372                         p = min (p, height - th);
 373                         p = max (p, 0);
 374
 375                         cairo_move_to (cr, width-4-tw, p);
 376                         pango_cairo_show_layout (cr, layout->gobj());
 377                 }
 378         }
 379
 380         if (types.size() == 1) {
 381                 int tw, th;
 382                 layout->set_attributes (unit_font_attributes);
 383                 switch (types.at(0)) {
 384                         case DataType::AUDIO:
 385                                 layout->set_text("dBFS");
 386                                 layout->get_pixel_size(tw, th);
 387                                 break;
 388                         case DataType::MIDI:
 389                                 layout->set_text("vel");
 390                                 layout->get_pixel_size(tw, th);
 391                                 break;
 392                 }
 393                 Gdk::Color c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 394                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 395                 cairo_move_to (cr, 1, height - th - 1.5);
 396                 pango_cairo_show_layout (cr, layout->gobj());
 397         }
 398
 399         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
 400
 401         cairo_destroy (cr);
 402         cairo_surface_destroy (surface);
 403
 404         return pattern;
 405 }
 406
 407
 408 typedef std::map<std::string,cairo_pattern_t*> TickPatterns;
 409 static  TickPatterns ticks_patterns;
 410
 411 gint meter_expose_ticks (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
 412 {
 413         Glib::RefPtr<Gdk::Window> win (mta->get_window());
 414         cairo_t* cr;
 415
 416         cr = gdk_cairo_create (win->gobj());
 417
 418         /* clip to expose area */
 419
 420         gdk_cairo_rectangle (cr, &ev->area);
 421         cairo_clip (cr);
 422
 423         cairo_pattern_t* pattern;
 424         TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
 425
 426         if (i == ticks_patterns.end()) {
 427                 pattern = meter_render_ticks (*mta, types);
 428                 ticks_patterns[mta->get_name()] = pattern;
 429         } else {
 430                 pattern = i->second;
 431         }
 432
 433         cairo_move_to (cr, 0, 0);
 434         cairo_set_source (cr, pattern);
 435
 436         gint width, height;
 437         win->get_size (width, height);
 438
 439         cairo_rectangle (cr, 0, 0, width, height);
 440         cairo_fill (cr);
 441
 442         cairo_destroy (cr);
 443
 444         return true;
 445 }
 446
 447 typedef std::map<std::string,cairo_pattern_t*> MetricPatterns;
 448 static  MetricPatterns metric_patterns;
 449
 450 gint meter_expose_metrics (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
 451 {
 452         Glib::RefPtr<Gdk::Window> win (mma->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         MetricPatterns::iterator i = metric_patterns.find (mma->get_name());
 464
 465         if (i == metric_patterns.end()) {
 466                 pattern = meter_render_metrics (*mma, types);
 467                 metric_patterns[mma->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 void meter_clear_pattern_cache() {
 487         metric_patterns.clear();
 488         ticks_patterns.clear();
 489         RedrawMetrics();
 490 }