1 /*
2 * Copyright (C) 2013-2019 Robin Gareus <robin@gareus.org>
3 * Copyright (C) 2014-2016 Paul Davis <paul@linuxaudiosystems.com>
4 * Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 */
20
21 #include <gtkmm/drawingarea.h>
22
23 #include <gtkmm2ext/cairo_widget.h>
24 #include <gtkmm2ext/gtk_ui.h>
25 #include <gtkmm2ext/utils.h>
26 #include <gtkmm2ext/rgb_macros.h>
27
28 #include "ardour/logmeter.h"
29 #include <ardour/rc_configuration.h>
30
31 #include "utils.h"
32 #include "meter_patterns.h"
33 #include "ui_config.h"
34
35 #include "pbd/i18n.h"
36
37 using namespace ARDOUR;
38 using namespace ARDOUR_UI_UTILS;
39 using namespace PBD;
40 using namespace Gtk;
41 using namespace Gtkmm2ext;
42 using namespace std;
43 using namespace ArdourMeter;
44
45 static const int max_pattern_metric_size = 1026;
46
47 /* signals used by meters */
48
49 sigc::signal<void> ArdourMeter::ResetAllPeakDisplays;
50 sigc::signal<void,ARDOUR::Route*> ArdourMeter::ResetRoutePeakDisplays;
51 sigc::signal<void,ARDOUR::RouteGroup*> ArdourMeter::ResetGroupPeakDisplays;
52 sigc::signal<void> ArdourMeter::RedrawMetrics;
53
54 sigc::signal<void, int, ARDOUR::RouteGroup*, ARDOUR::MeterType> ArdourMeter::SetMeterTypeMulti;
55
56
57 /* pattern cache */
58
59 struct MeterMatricsMapKey {
MeterMatricsMapKeyMeterMatricsMapKey60 MeterMatricsMapKey (std::string n, MeterType t, int dt)
61 : _n(n)
62 , _t(t)
63 , _dt(dt)
64 {}
operator <MeterMatricsMapKey65 inline bool operator<(const MeterMatricsMapKey& rhs) const {
66 return (_n < rhs._n) || (_n == rhs._n && _t < rhs._t) || (_n == rhs._n && _t == rhs._t && _dt < rhs._dt);
67 }
68 std::string _n;
69 MeterType _t;
70 int _dt;
71 };
72
73 namespace ArdourMeter {
74 typedef std::map<MeterMatricsMapKey, cairo_pattern_t*> MetricPatternMap;
75 }
76
77 static ArdourMeter::MetricPatternMap ticks_patterns;
78 static ArdourMeter::MetricPatternMap metric_patterns;
79
80
81 const std::string
meter_type_string(ARDOUR::MeterType mt)82 ArdourMeter::meter_type_string (ARDOUR::MeterType mt)
83 {
84 switch (mt) {
85 case MeterPeak:
86 return _("Peak (+6dBFS)");
87 break;
88 case MeterPeak0dB:
89 return _("Peak (0dBFS)");
90 break;
91 case MeterKrms:
92 return _("RMS + Peak");
93 break;
94 case MeterIEC1DIN:
95 return _("IEC1/DIN");
96 break;
97 case MeterIEC1NOR:
98 return _("IEC1/Nordic");
99 break;
100 case MeterIEC2BBC:
101 return _("IEC2/BBC");
102 break;
103 case MeterIEC2EBU:
104 return _("IEC2/EBU");
105 break;
106 case MeterK20:
107 return _("K20/RMS");
108 break;
109 case MeterK14:
110 return _("K14/RMS");
111 break;
112 case MeterK12:
113 return _("K12/RMS");
114 break;
115 case MeterVU:
116 return _("VU");
117 break;
118 default:
119 assert(0);
120 return _("???");
121 break;
122 }
123 }
124
types_to_bit(vector<ARDOUR::DataType> types)125 static inline int types_to_bit (vector<ARDOUR::DataType> types) {
126 int rv = 0;
127 for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
128 rv |= 1 << (*i);
129 }
130 return rv;
131 }
132
mtr_col_and_fract(cairo_t * cr,Gdk::Color const * const c,const uint32_t peakcolor,const MeterType mt,const float val)133 static inline float mtr_col_and_fract(
134 cairo_t* cr, Gdk::Color const * const c, const uint32_t peakcolor, const MeterType mt, const float val)
135 {
136 float fraction = 0;
137
138 switch (mt) {
139 default:
140 case MeterKrms:
141 case MeterPeak:
142 fraction = log_meter (val);
143 if (val >= 0 || val == -9) {
144 cairo_set_source_rgb (cr,
145 UINT_RGBA_R_FLT(peakcolor),
146 UINT_RGBA_G_FLT(peakcolor),
147 UINT_RGBA_B_FLT(peakcolor));
148 } else {
149 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
150 }
151 break;
152 case MeterPeak0dB:
153 fraction = log_meter0dB (val);
154 if (val >= 0 || val == -9) {
155 cairo_set_source_rgb (cr,
156 UINT_RGBA_R_FLT(peakcolor),
157 UINT_RGBA_G_FLT(peakcolor),
158 UINT_RGBA_B_FLT(peakcolor));
159 } else {
160 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
161 }
162 break;
163 case MeterIEC2BBC:
164 case MeterIEC2EBU:
165 fraction = meter_deflect_ppm(val);
166 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
167 break;
168 case MeterIEC1NOR:
169 fraction = meter_deflect_nordic(val);
170 #if 0
171 if (val == -18.0) {
172 cairo_set_source_rgb (cr,
173 UINT_RGBA_R_FLT(peakcolor),
174 UINT_RGBA_G_FLT(peakcolor),
175 UINT_RGBA_B_FLT(peakcolor));
176 } else {
177 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
178 }
179 #else
180 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
181 #endif
182 break;
183 case MeterIEC1DIN:
184 fraction = meter_deflect_din(val);
185 if (val == -9.0 || val == -15 || val == -18) {
186 cairo_set_source_rgb (cr,
187 UINT_RGBA_R_FLT(peakcolor),
188 UINT_RGBA_G_FLT(peakcolor),
189 UINT_RGBA_B_FLT(peakcolor));
190 } else {
191 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
192 }
193 break;
194 case MeterVU:
195 fraction = meter_deflect_vu(val);
196 if (val >= -20.0) {
197 cairo_set_source_rgb (cr,
198 UINT_RGBA_R_FLT(peakcolor),
199 UINT_RGBA_G_FLT(peakcolor),
200 UINT_RGBA_B_FLT(peakcolor));
201 } else {
202 cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
203 }
204 break;
205 case MeterK20:
206 fraction = meter_deflect_k (val, 20);
207 if (val >= -16.0) {
208 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
209 } else if (val >= -20.0) {
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 break;
215 case MeterK14:
216 if (val >= -10.0) {
217 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
218 } else if (val >= -14.0) {
219 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
220 } else {
221 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
222 }
223 fraction = meter_deflect_k (val, 14);
224 break;
225 case MeterK12:
226 if (val >= -8.0) {
227 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
228 } else if (val >= -12.0) {
229 cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
230 } else {
231 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
232 }
233 fraction = meter_deflect_k (val, 12);
234 break;
235 }
236 return fraction;
237 }
238
mtr_red_stripe(cairo_t * cr,float l,float w,int h,float top,float bot)239 static void mtr_red_stripe(cairo_t* cr, float l, float w, int h, float top, float bot) {
240 if (w <= 0) return;
241 int t = h - floorf (h * (top));
242 int b = h - floorf (h * (bot));
243 cairo_set_source_rgba (cr, .75, 0, 0, 0.75);
244 cairo_rectangle (cr, l, t + .5, w, b - t);
245 cairo_fill (cr);
246 }
247
set_bg_color(Gtk::Widget & w,cairo_t * cr,MeterType type)248 static void set_bg_color (Gtk::Widget& w, cairo_t* cr, MeterType type) {
249 double r,g,b,a;
250 switch(type) {
251 case MeterVU:
252 Gtkmm2ext::color_to_rgba (UIConfiguration::instance().color ("meterstrip vu bg"), r, g, b, a);
253 break;
254 case MeterIEC1DIN:
255 case MeterIEC1NOR:
256 case MeterIEC2BBC:
257 case MeterIEC2EBU:
258 Gtkmm2ext::color_to_rgba (UIConfiguration::instance().color ("meterstrip ppm bg"), r, g, b, a);
259 break;
260 case MeterK12:
261 case MeterK14:
262 case MeterK20:
263 Gtkmm2ext::color_to_rgba (UIConfiguration::instance().color ("meterstrip dpm bg"), r, g, b, a);
264 break;
265 default:
266 {
267 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_ACTIVE);
268 r = c.get_red_p();
269 g = c.get_green_p();
270 b = c.get_blue_p();
271 }
272 break;
273 }
274 cairo_set_source_rgb (cr, r, g, b);
275 }
276
set_fg_color(Gtk::Widget &,MeterType type,Gdk::Color * c)277 static void set_fg_color(Gtk::Widget&, MeterType type, Gdk::Color * c) {
278 double r,g,b,a;
279 switch(type) {
280 case MeterVU:
281 Gtkmm2ext::color_to_rgba (UIConfiguration::instance().color ("meterstrip vu fg"), r, g, b, a);
282 break;
283 case MeterIEC1DIN:
284 case MeterIEC1NOR:
285 case MeterIEC2BBC:
286 case MeterIEC2EBU:
287 Gtkmm2ext::color_to_rgba (UIConfiguration::instance().color ("meterstrip ppm fg"), r, g, b, a);
288 break;
289 default:
290 Gtkmm2ext::color_to_rgba (UIConfiguration::instance().color ("meterstrip dpm fg"), r, g, b, a);
291 break;
292 }
293 c->set_rgb_p (r, g, b);
294 }
295
296 static cairo_pattern_t*
meter_render_ticks(Gtk::Widget & w,MeterType type,vector<ARDOUR::DataType> types)297 meter_render_ticks (Gtk::Widget& w, MeterType type, vector<ARDOUR::DataType> types)
298 {
299 Glib::RefPtr<Gdk::Window> win (w.get_window());
300
301 bool background;
302 bool tickleft, tickright;
303 gint width, height;
304 win->get_size (width, height);
305 tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
306 tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
307 background = types.size() == 0 || tickleft || tickright;
308
309 float box_l=0;
310 float box_w=0;
311 #define PX_SCALE(pxmin, dflt) rint(std::max((double)pxmin, (double)dflt * UIConfiguration::instance().get_ui_scale()))
312 if (tickleft) {
313 if (w.get_name().substr(0, 3) == "Bar") {
314 box_w = PX_SCALE(2, 2);
315 box_l = width - box_w;
316 } else if (w.get_name().substr(0, 4) == "Mark") {
317 box_w = PX_SCALE(2, 2);
318 box_l = width - box_w;
319 background = false;
320 }
321 } else if (tickright) {
322 if (w.get_name().substr(0, 3) == "Bar") {
323 box_l = 0; box_w = PX_SCALE(2, 2);
324 } else if (w.get_name().substr(0, 4) == "Mark") {
325 box_l = 0; box_w = PX_SCALE(2, 2);
326 background = false;
327 }
328 } else {
329 box_l = 0; box_w = width;
330 }
331 #undef PX_SCALE
332
333 cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
334 cairo_t* cr = cairo_create (surface);
335
336 cairo_move_to (cr, 0, 0);
337 cairo_rectangle (cr, 0, 0, width, height);
338
339 if (background) {
340 /* meterbridge */
341 set_bg_color(w, cr, type);
342 } else {
343 /* mixer */
344 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
345 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
346 }
347 cairo_fill (cr);
348
349 height = min(max_pattern_metric_size, height);
350 uint32_t peakcolor = UIConfiguration::instance().color ("meterbridge peaklabel");
351
352 for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
353
354 Gdk::Color c;
355 if (types.size() > 1 && (*i) == DataType::MIDI) {
356 /* we're overlaying more than 1 set of marks, so use different colours */
357 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
358 } else if (background) {
359 set_fg_color(w, type, &c);
360 } else {
361 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
362 }
363
364 // tick-maker position in dBFS, line-thickness
365 std::map<float,float> points;
366
367 switch (*i) {
368 case DataType::AUDIO:
369
370 switch (type) {
371 case MeterK12:
372 points.insert (std::pair<float,float>(-52.0f, 1.0));
373 points.insert (std::pair<float,float>(-42.0f, 1.0));
374 points.insert (std::pair<float,float>(-32.0f, 1.0));
375 points.insert (std::pair<float,float>(-22.0f, 1.0));
376 points.insert (std::pair<float,float>(-18.0f, 1.0));
377 points.insert (std::pair<float,float>(-15.0f, 1.0));
378 points.insert (std::pair<float,float>(-12.0f, 1.0));
379 points.insert (std::pair<float,float>( -9.0f, 1.0));
380 points.insert (std::pair<float,float>( -8.0f, 0.8));
381 points.insert (std::pair<float,float>( -6.0f, 1.0));
382 points.insert (std::pair<float,float>( -3.0f, 1.0));
383 points.insert (std::pair<float,float>( 0.0f, 1.0));
384 break;
385 case MeterK14:
386 points.insert (std::pair<float,float>(-54.0f, 1.0));
387 points.insert (std::pair<float,float>(-44.0f, 1.0));
388 points.insert (std::pair<float,float>(-34.0f, 1.0));
389 points.insert (std::pair<float,float>(-24.0f, 1.0));
390 points.insert (std::pair<float,float>(-20.0f, 1.0));
391 points.insert (std::pair<float,float>(-17.0f, 1.0));
392 points.insert (std::pair<float,float>(-14.0f, 1.0)); // 0
393 points.insert (std::pair<float,float>(-11.0f, 1.0)); // +3
394 points.insert (std::pair<float,float>(-10.0f, 0.8)); // +4
395 points.insert (std::pair<float,float>( -8.0f, 1.0)); // +6
396 points.insert (std::pair<float,float>( -4.0f, 1.0)); // +10
397 points.insert (std::pair<float,float>( 0.0f, 1.0));
398 break;
399 case MeterK20:
400 points.insert (std::pair<float,float>(-60.0f, 1.0));
401 points.insert (std::pair<float,float>(-50.0f, 1.0));
402 points.insert (std::pair<float,float>(-40.0f, 1.0));
403 points.insert (std::pair<float,float>(-30.0f, 1.0));
404 points.insert (std::pair<float,float>(-26.0f, 1.0));
405 points.insert (std::pair<float,float>(-23.0f, 1.0));
406 points.insert (std::pair<float,float>(-20.0f, 1.0)); // 0
407 points.insert (std::pair<float,float>(-17.0f, 1.0));
408 points.insert (std::pair<float,float>(-16.0f, 0.8));
409 points.insert (std::pair<float,float>(-14.0f, 1.0)); // +6
410 points.insert (std::pair<float,float>(-10.0f, 1.0));
411 points.insert (std::pair<float,float>( -5.0f, 1.0));
412 points.insert (std::pair<float,float>( 0.0f, 1.0)); //+20
413 break;
414 case MeterIEC2EBU:
415 points.insert (std::pair<float,float>(-30.0f, 1.0));
416 points.insert (std::pair<float,float>(-28.0f, 0.5));
417 points.insert (std::pair<float,float>(-26.0f, 1.0));
418 points.insert (std::pair<float,float>(-24.0f, 0.5));
419 points.insert (std::pair<float,float>(-22.0f, 1.0));
420 points.insert (std::pair<float,float>(-20.0f, 0.5));
421 points.insert (std::pair<float,float>(-18.0f, 1.0));
422 points.insert (std::pair<float,float>(-16.0f, 0.5));
423 points.insert (std::pair<float,float>(-14.0f, 1.0));
424 points.insert (std::pair<float,float>(-12.0f, 0.5));
425 points.insert (std::pair<float,float>(-10.0f, 1.0));
426 points.insert (std::pair<float,float>( -9.0f, 0.8));
427 points.insert (std::pair<float,float>( -8.0f, 0.5));
428 points.insert (std::pair<float,float>( -6.0f, 1.0));
429 break;
430 case MeterIEC2BBC:
431 points.insert (std::pair<float,float>(-30.0f, 1.0));
432 points.insert (std::pair<float,float>(-26.0f, 1.0));
433 points.insert (std::pair<float,float>(-22.0f, 1.0));
434 points.insert (std::pair<float,float>(-18.0f, 1.0));
435 points.insert (std::pair<float,float>(-14.0f, 1.0));
436 points.insert (std::pair<float,float>(-10.0f, 1.0));
437 points.insert (std::pair<float,float>( -6.0f, 1.0));
438 break;
439 case MeterIEC1NOR:
440 points.insert (std::pair<float,float>(-60.0f, 1.0)); // -42
441 points.insert (std::pair<float,float>(-57.0f, 0.5));
442 points.insert (std::pair<float,float>(-54.0f, 1.0));
443 points.insert (std::pair<float,float>(-51.0f, 0.5));
444 points.insert (std::pair<float,float>(-48.0f, 1.0));
445 points.insert (std::pair<float,float>(-45.0f, 0.5));
446 points.insert (std::pair<float,float>(-42.0f, 1.0));
447 points.insert (std::pair<float,float>(-39.0f, 0.5));
448 points.insert (std::pair<float,float>(-36.0f, 1.0));
449
450 points.insert (std::pair<float,float>(-33.0f, 0.5));
451 points.insert (std::pair<float,float>(-30.0f, 1.0));
452 points.insert (std::pair<float,float>(-27.0f, 0.5));
453 points.insert (std::pair<float,float>(-24.0f, 1.0));
454 points.insert (std::pair<float,float>(-21.0f, 0.5));
455
456 points.insert (std::pair<float,float>(-18.0f, 1.0));
457 points.insert (std::pair<float,float>(-15.0f, 0.5));
458 points.insert (std::pair<float,float>(-12.0f, 1.0));
459 points.insert (std::pair<float,float>( -9.0f, 1.0));
460 points.insert (std::pair<float,float>( -6.0f, 0.5));
461 mtr_red_stripe(cr, box_l, box_w, height,
462 meter_deflect_nordic(-6.0f), meter_deflect_nordic(-12.0f));
463 break;
464 case MeterIEC1DIN:
465 points.insert (std::pair<float,float>( -3.0f, 0.5)); // "200%"
466 points.insert (std::pair<float,float>( -4.0f, 1.0));
467 points.insert (std::pair<float,float>( -5.0f, 0.5));
468 points.insert (std::pair<float,float>( -6.0f, 0.5));
469 points.insert (std::pair<float,float>( -7.0f, 0.5));
470 points.insert (std::pair<float,float>( -8.0f, 0.5));
471 points.insert (std::pair<float,float>( -9.0f, 1.0)); // "100%"
472 points.insert (std::pair<float,float>(-10.0f, 0.5));
473 points.insert (std::pair<float,float>(-11.0f, 0.5));
474 points.insert (std::pair<float,float>(-12.0f, 0.5));
475 points.insert (std::pair<float,float>(-13.0f, 0.5));
476 points.insert (std::pair<float,float>(-14.0f, 1.0));
477 points.insert (std::pair<float,float>(-15.0f, 0.8)); // "50%"
478 points.insert (std::pair<float,float>(-18.0f, 0.8)); // "-9"
479 points.insert (std::pair<float,float>(-19.0f, 1.0));
480 points.insert (std::pair<float,float>(-24.0f, 0.5));
481 points.insert (std::pair<float,float>(-29.0f, 1.0)); // "-20", "10%"
482 points.insert (std::pair<float,float>(-34.0f, 0.5)); // -25
483 //points.insert (std::pair<float,float>(-35.0f, 0.5)); // "5%" " -20"
484 points.insert (std::pair<float,float>(-39.0f, 1.0));
485 points.insert (std::pair<float,float>(-49.0f, 1.0));
486 points.insert (std::pair<float,float>(-54.0f, 0.5));
487 points.insert (std::pair<float,float>(-59.0f, 1.0));
488 mtr_red_stripe(cr, box_l, box_w, height,
489 meter_deflect_din(0.0f), meter_deflect_din(-9.0f));
490 break;
491 case MeterVU:
492 points.insert (std::pair<float,float>(-17.0f, 1.0)); //+3 VU
493 points.insert (std::pair<float,float>(-18.0f, 1.0));
494 points.insert (std::pair<float,float>(-19.0f, 1.0));
495 points.insert (std::pair<float,float>(-19.5f, 0.5));
496 points.insert (std::pair<float,float>(-20.0f, 1.0)); // 0 VU
497 points.insert (std::pair<float,float>(-20.5f, 0.5));
498 points.insert (std::pair<float,float>(-21.0f, 1.0));
499 points.insert (std::pair<float,float>(-22.0f, 1.0));
500 points.insert (std::pair<float,float>(-23.0f, 1.0)); //-3 VU
501 points.insert (std::pair<float,float>(-24.0f, 0.5));
502 points.insert (std::pair<float,float>(-25.0f, 1.0));
503 points.insert (std::pair<float,float>(-26.0f, 0.5));
504 points.insert (std::pair<float,float>(-27.0f, 1.0)); //-7 VU
505 points.insert (std::pair<float,float>(-30.0f, 1.0));
506 points.insert (std::pair<float,float>(-35.0f, 0.5));
507 points.insert (std::pair<float,float>(-40.0f, 1.0));
508 mtr_red_stripe(cr, box_l, box_w, height,
509 meter_deflect_vu(-17.0f), meter_deflect_vu(-20.0f));
510 break;
511
512 default:
513 points.insert (std::pair<float,float>( 0, 1.0));
514 points.insert (std::pair<float,float>( 1, 0.5));
515 points.insert (std::pair<float,float>( 2, 0.5));
516 points.insert (std::pair<float,float>( 3, 1.0));
517 points.insert (std::pair<float,float>( 4, 0.5));
518 points.insert (std::pair<float,float>( 5, 0.5));
519 /* fallthrough */
520 case MeterPeak0dB:
521 points.insert (std::pair<float,float>(-60, 0.5));
522 points.insert (std::pair<float,float>(-50, 1.0));
523 points.insert (std::pair<float,float>(-40, 1.0));
524 points.insert (std::pair<float,float>(-30, 1.0));
525 if (UIConfiguration::instance().get_meter_line_up_level() == MeteringLineUp24) {
526 points.insert (std::pair<float,float>(-24, 1.0));
527 } else {
528 points.insert (std::pair<float,float>(-25, 1.0));
529 }
530 points.insert (std::pair<float,float>(-20, 1.0));
531
532 points.insert (std::pair<float,float>(-19, 0.5));
533 points.insert (std::pair<float,float>(-18, 1.0));
534 points.insert (std::pair<float,float>(-17, 0.5));
535 points.insert (std::pair<float,float>(-16, 0.5));
536 points.insert (std::pair<float,float>(-15, 1.0));
537
538 points.insert (std::pair<float,float>(-14, 0.5));
539 points.insert (std::pair<float,float>(-13, 0.5));
540 points.insert (std::pair<float,float>(-12, 0.5));
541 points.insert (std::pair<float,float>(-11, 0.5));
542 points.insert (std::pair<float,float>(-10, 1.0));
543
544 points.insert (std::pair<float,float>( -9, 1.0));
545 points.insert (std::pair<float,float>( -8, 0.5));
546 points.insert (std::pair<float,float>( -7, 0.5));
547 points.insert (std::pair<float,float>( -6, 0.5));
548 points.insert (std::pair<float,float>( -5, 1.0));
549 points.insert (std::pair<float,float>( -4, 0.5));
550 points.insert (std::pair<float,float>( -3, 1.0));
551 points.insert (std::pair<float,float>( -2, 0.5));
552 points.insert (std::pair<float,float>( -1, 0.5));
553 break;
554 }
555 break;
556
557 case DataType::MIDI:
558 points.insert (std::pair<float,float>( 0, 1.0));
559 points.insert (std::pair<float,float>( 16, 0.5));
560 points.insert (std::pair<float,float>( 32, 0.5));
561 points.insert (std::pair<float,float>( 48, 0.5));
562 points.insert (std::pair<float,float>( 64, 1.0));
563 points.insert (std::pair<float,float>( 80, 0.5));
564 points.insert (std::pair<float,float>( 96, 0.5));
565 points.insert (std::pair<float,float>(100, 1.0));
566 points.insert (std::pair<float,float>(112, 0.5));
567 points.insert (std::pair<float,float>(127, 1.0));
568 break;
569 }
570
571 for (std::map<float,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
572 cairo_set_line_width (cr, (j->second));
573
574 float fraction = 0;
575 gint pos;
576
577 switch (*i) {
578 case DataType::AUDIO:
579 fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
580
581 pos = height - (gint) floor (height * fraction);
582 pos = max (pos, 1);
583 cairo_move_to(cr, 0, pos + .5);
584 cairo_line_to(cr, width, pos + .5);
585 cairo_stroke (cr);
586 break;
587 case DataType::MIDI:
588 fraction = (j->first) / 127.0;
589 pos = 1 + height - (gint) floor (height * fraction);
590 pos = min (pos, height);
591 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
592 cairo_arc(cr, width * .5, pos + .5, 1.0, 0, 2 * M_PI);
593 cairo_fill(cr);
594 break;
595 }
596 }
597 }
598
599 cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
600
601 cairo_destroy (cr);
602 cairo_surface_destroy (surface);
603
604 return pattern;
605 }
606
607 static cairo_pattern_t*
meter_render_metrics(Gtk::Widget & w,MeterType type,vector<DataType> types)608 meter_render_metrics (Gtk::Widget& w, MeterType type, vector<DataType> types)
609 {
610 Glib::RefPtr<Gdk::Window> win (w.get_window());
611
612 bool tickleft, tickright;
613 bool background;
614 int overlay_midi = 1;
615 gint width, height;
616 win->get_size (width, height);
617
618 tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
619 tickright = w.get_name().substr(w.get_name().length() - 5) == "Right";
620 background = types.size() == 0 || tickleft || tickright;
621
622 if (!tickleft && !tickright) {
623 tickright = true;
624 }
625
626 #ifdef NO_OVERSAMPLE
627 cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
628 cairo_t* cr = cairo_create (surface);
629 #else
630 cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width*2, height*2);
631 cairo_t* cr = cairo_create (surface);
632 cairo_scale(cr, 2.0, 2.0);
633 #endif
634 Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
635
636 Pango::AttrList audio_font_attributes;
637 Pango::AttrList midi_font_attributes;
638 Pango::AttrList unit_font_attributes;
639
640 Pango::AttrFontDesc* font_attr;
641 Pango::FontDescription font;
642
643 font = Pango::FontDescription (UIConfiguration::instance().get_SmallMonospaceFont());
644 #ifdef __APPLE__
645 const double fixfontsize = 1.0;
646 #else
647 // counter-act global font-scaling.
648 const double fixfontsize = std::min(1.0, 0.9 / sqrtf(UIConfiguration::instance().get_ui_scale()));
649 #endif
650
651 font.set_weight (Pango::WEIGHT_NORMAL);
652 font.set_size (8.0 * fixfontsize * PANGO_SCALE);
653 font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
654 audio_font_attributes.change (*font_attr);
655 delete font_attr;
656
657 font.set_weight (Pango::WEIGHT_ULTRALIGHT);
658 font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
659 font.set_size (7.0 * fixfontsize * PANGO_SCALE);
660 font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
661 midi_font_attributes.change (*font_attr);
662 delete font_attr;
663
664 font.set_size (6.0 * fixfontsize * PANGO_SCALE);
665 font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
666 unit_font_attributes.change (*font_attr);
667 delete font_attr;
668
669 cairo_move_to (cr, 0, 0);
670 cairo_rectangle (cr, 0, 0, width, height);
671 if (background) {
672 /* meterbridge */
673 set_bg_color(w, cr, type);
674 } else {
675 /* mixer */
676 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
677 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
678 }
679 cairo_fill (cr);
680
681 cairo_set_line_width (cr, 1.0);
682
683 height = min(max_pattern_metric_size, height);
684 uint32_t peakcolor = UIConfiguration::instance().color ("meterbridge peaklabel");
685 Gdk::Color c; // default text color
686
687 for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
688
689 if (types.size() > 1 && (*i) == DataType::MIDI && overlay_midi == 0) {
690 continue;
691 }
692
693 if (types.size() > 1 && (*i) == DataType::MIDI) {
694 /* we're overlaying more than 1 set of marks, so use different colours */
695 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
696 } else if (background) {
697 set_fg_color(w, type, &c);
698 } else {
699 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
700 }
701
702 std::map<float,string> points; // map: label-pos in dBFS, label-text
703
704 switch (*i) {
705 case DataType::AUDIO:
706 layout->set_attributes (audio_font_attributes);
707 if (type == MeterPeak0dB) {
708 overlay_midi = 4;
709 }
710 switch (type) {
711 case MeterK12:
712 overlay_midi = 0;
713 points.insert (std::pair<float,string>(-52.0f, "-40"));
714 points.insert (std::pair<float,string>(-42.0f, "-30"));
715 points.insert (std::pair<float,string>(-32.0f, "-20"));
716 points.insert (std::pair<float,string>(-22.0f, "-10"));
717 points.insert (std::pair<float,string>(-18.0f, "-6"));
718 points.insert (std::pair<float,string>(-15.0f, "-3"));
719 points.insert (std::pair<float,string>(-12.0f, " 0"));
720 points.insert (std::pair<float,string>( -9.0f, "+3"));
721 points.insert (std::pair<float,string>( -6.0f, "+6"));
722 points.insert (std::pair<float,string>( -3.0f, "+9"));
723 points.insert (std::pair<float,string>( 0.0f, "+12"));
724 break;
725 case MeterK14:
726 overlay_midi = 0;
727 points.insert (std::pair<float,string>(-54.0f, "-40"));
728 points.insert (std::pair<float,string>(-44.0f, "-30"));
729 points.insert (std::pair<float,string>(-34.0f, "-20"));
730 points.insert (std::pair<float,string>(-24.0f, "-10"));
731 points.insert (std::pair<float,string>(-20.0f, "-6"));
732 points.insert (std::pair<float,string>(-17.0f, "-3"));
733 points.insert (std::pair<float,string>(-14.0f, " 0"));
734 points.insert (std::pair<float,string>(-11.0f, "+3"));
735 points.insert (std::pair<float,string>( -8.0f, "+6"));
736 points.insert (std::pair<float,string>( -4.0f, "+10"));
737 points.insert (std::pair<float,string>( 0.0f, "+14"));
738 break;
739 case MeterK20:
740 overlay_midi = 0;
741 points.insert (std::pair<float,string>(-60.0f, "-40"));
742 points.insert (std::pair<float,string>(-50.0f, "-30"));
743 points.insert (std::pair<float,string>(-40.0f, "-20"));
744 points.insert (std::pair<float,string>(-30.0f, "-10"));
745 points.insert (std::pair<float,string>(-26.0f, "-6"));
746 points.insert (std::pair<float,string>(-23.0f, "-3"));
747 points.insert (std::pair<float,string>(-20.0f, " 0"));
748 points.insert (std::pair<float,string>(-17.0f, "+3"));
749 points.insert (std::pair<float,string>(-14.0f, "+6"));
750 points.insert (std::pair<float,string>(-10.0f, "+10"));
751 points.insert (std::pair<float,string>( -5.0f, "+15"));
752 points.insert (std::pair<float,string>( 0.0f, "+20"));
753 break;
754 case MeterPeak:
755 /* fallthrough */
756 case MeterKrms:
757 /* fallthrough */
758 default:
759 points.insert (std::pair<float,string>( 3.0f, "+3"));
760 /* fallthrough */
761 case MeterPeak0dB:
762 points.insert (std::pair<float,string>(-50.0f, "-50"));
763 points.insert (std::pair<float,string>(-40.0f, "-40"));
764 points.insert (std::pair<float,string>(-30.0f, "-30"));
765 points.insert (std::pair<float,string>(-20.0f, "-20"));
766 if (types.size() == 1) {
767 if (UIConfiguration::instance().get_meter_line_up_level() == MeteringLineUp24) {
768 points.insert (std::pair<float,string>(-24.0f, "-24"));
769 } else {
770 points.insert (std::pair<float,string>(-25.0f, "-25"));
771 }
772 points.insert (std::pair<float,string>(-15.0f, "-15"));
773 }
774 points.insert (std::pair<float,string>(-18.0f, "-18"));
775 points.insert (std::pair<float,string>(-10.0f, "-10"));
776 points.insert (std::pair<float,string>( -5.0f, "-5"));
777 points.insert (std::pair<float,string>( -3.0f, "-3"));
778 points.insert (std::pair<float,string>( 0.0f, "+0"));
779 break;
780
781 case MeterIEC2EBU:
782 overlay_midi = 3;
783 points.insert (std::pair<float,string>(-30.0f, "-12"));
784 points.insert (std::pair<float,string>(-26.0f, "-8"));
785 points.insert (std::pair<float,string>(-22.0f, "-4"));
786 points.insert (std::pair<float,string>(-18.0f, "TST"));
787 points.insert (std::pair<float,string>(-14.0f, "+4"));
788 points.insert (std::pair<float,string>(-10.0f, "+8"));
789 points.insert (std::pair<float,string>( -6.0f, "+12"));
790 break;
791
792 case MeterIEC2BBC:
793 overlay_midi = 3;
794 points.insert (std::pair<float,string>(-30.0f, " 1 "));
795 points.insert (std::pair<float,string>(-26.0f, " 2 "));
796 points.insert (std::pair<float,string>(-22.0f, " 3 "));
797 points.insert (std::pair<float,string>(-18.0f, " 4 "));
798 points.insert (std::pair<float,string>(-14.0f, " 5 "));
799 points.insert (std::pair<float,string>(-10.0f, " 6 "));
800 points.insert (std::pair<float,string>( -6.0f, " 7 "));
801 break;
802
803 case MeterIEC1NOR:
804 overlay_midi = 0;
805 //points.insert (std::pair<float,string>(-60.0f, "-42"));
806 points.insert (std::pair<float,string>(-54.0f, "-36"));
807 points.insert (std::pair<float,string>(-48.0f, "-30"));
808 points.insert (std::pair<float,string>(-42.0f, "-24"));
809 points.insert (std::pair<float,string>(-36.0f, "-18"));
810
811 //points.insert (std::pair<float,string>(-33.0f, "-15"));
812 points.insert (std::pair<float,string>(-30.0f, "-12"));
813 //points.insert (std::pair<float,string>(-27.0f, "-9"));
814 points.insert (std::pair<float,string>(-24.0f, "-6"));
815 //points.insert (std::pair<float,string>(-21.0f, "-3"));
816
817 points.insert (std::pair<float,string>(-18.0f, "TST"));
818 //points.insert (std::pair<float,string>(-15.0f, "+3"));
819 points.insert (std::pair<float,string>(-12.0f, "+6"));
820 points.insert (std::pair<float,string>( -9.0f, "+9"));
821 //points.insert (std::pair<float,string>( -6.0f, "+12"));
822 break;
823
824 case MeterIEC1DIN:
825 overlay_midi = 2;
826 //points.insert (std::pair<float,string>( -3.0f, "200%"));
827 points.insert (std::pair<float,string>( -4.0f, "+5"));
828 points.insert (std::pair<float,string>( -9.0f, "0")); // "100%";
829 points.insert (std::pair<float,string>(-14.0f, "-5"));
830 //points.insert (std::pair<float,string>(-15.0f, "50%"));
831 //points.insert (std::pair<float,string>(-18.0f, "-9"));
832 points.insert (std::pair<float,string>(-19.0f, "-10")); // "30%"
833 points.insert (std::pair<float,string>(-29.0f, "-20")); // "10%"
834 //points.insert (std::pair<float,string>(-35.0f, "5%")); // "5%"
835 points.insert (std::pair<float,string>(-39.0f, "-30"));
836 //points.insert (std::pair<float,string>(-49.0f, "1%"));
837 points.insert (std::pair<float,string>(-59.0f, "-50"));
838 break;
839
840 case MeterVU:
841 overlay_midi = 0;
842 points.insert (std::pair<float,string>(-17.0f, "+3"));
843 points.insert (std::pair<float,string>(-18.0f, "+2"));
844 points.insert (std::pair<float,string>(-19.0f, "+1"));
845 points.insert (std::pair<float,string>(-20.0f, " 0"));
846 points.insert (std::pair<float,string>(-21.0f, "-1"));
847 points.insert (std::pair<float,string>(-22.0f, "-2"));
848 points.insert (std::pair<float,string>(-23.0f, "-3"));
849 points.insert (std::pair<float,string>(-25.0f, "-5"));
850 points.insert (std::pair<float,string>(-27.0f, "-7"));
851 points.insert (std::pair<float,string>(-30.0f, "-10"));
852 points.insert (std::pair<float,string>(-40.0f, "-20"));
853 break;
854 }
855 break;
856 case DataType::MIDI:
857 layout->set_attributes (midi_font_attributes);
858 if (types.size() == 1) {
859 points.insert (std::pair<float,string>( 0, "0"));
860 points.insert (std::pair<float,string>( 16, "16"));
861 points.insert (std::pair<float,string>( 32, "32"));
862 points.insert (std::pair<float,string>( 48, "48"));
863 points.insert (std::pair<float,string>( 64, "64"));
864 points.insert (std::pair<float,string>( 80, "80"));
865 points.insert (std::pair<float,string>( 96, "96"));
866 points.insert (std::pair<float,string>(100, "100"));
867 points.insert (std::pair<float,string>(112, "112"));
868 points.insert (std::pair<float,string>(127, "127"));
869 } else {
870 switch (overlay_midi) {
871 case 1:
872 /* labels that don't overlay with dBFS */
873 points.insert (std::pair<float,string>( 0, "0"));
874 points.insert (std::pair<float,string>( 24, "24"));
875 points.insert (std::pair<float,string>( 48, "48"));
876 points.insert (std::pair<float,string>( 72, "72"));
877 points.insert (std::pair<float,string>(127, "127"));
878 break;
879 case 2:
880 /* labels that don't overlay with DIN */
881 points.insert (std::pair<float,string>( 0, "0"));
882 points.insert (std::pair<float,string>( 16, "16"));
883 points.insert (std::pair<float,string>( 40, "40"));
884 points.insert (std::pair<float,string>( 64, "64"));
885 points.insert (std::pair<float,string>(112, "112"));
886 points.insert (std::pair<float,string>(127, "127"));
887 break;
888 case 3:
889 /* labels that don't overlay with BBC nor EBU*/
890 points.insert (std::pair<float,string>( 0, "0"));
891 points.insert (std::pair<float,string>( 16, "16"));
892 points.insert (std::pair<float,string>( 56, "56"));
893 points.insert (std::pair<float,string>( 72, "72"));
894 points.insert (std::pair<float,string>(112, "112"));
895 points.insert (std::pair<float,string>(127, "127"));
896 break;
897 case 4:
898 /* labels that don't overlay with 0dBFS*/
899 points.insert (std::pair<float,string>( 0, "0"));
900 points.insert (std::pair<float,string>( 16, "16"));
901 points.insert (std::pair<float,string>( 48, "48"));
902 points.insert (std::pair<float,string>( 84, "84"));
903 points.insert (std::pair<float,string>(100, "100"));
904 default:
905 break;
906 }
907 }
908 break;
909 }
910
911 gint pos = -1;
912
913 for (std::map<float,string>::const_iterator j = points.begin(); j != points.end(); ++j) {
914 float fraction = 0;
915 bool align_center = background; // this is true for meterbridge meters w/ fixed background
916 switch (*i) {
917 case DataType::AUDIO:
918 fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
919
920 pos = height - (gint) floor (height * fraction);
921 pos = max (pos, 1);
922 if (tickleft) {
923 cairo_move_to(cr, width-1.5, pos + .5);
924 cairo_line_to(cr, width, pos + .5);
925 cairo_stroke (cr);
926 } else if (tickright) {
927 cairo_move_to(cr, 0, pos + .5);
928 cairo_line_to(cr, 1.5, pos + .5);
929 cairo_stroke (cr);
930 }
931 break;
932 case DataType::MIDI:
933 align_center = false; // don't bleed into legend
934 fraction = (j->first) / 127.0;
935 pos = 1 + height - (gint) lrintf (height * fraction);
936 pos = min (pos, height);
937 break;
938 }
939
940 if (pos < 0) continue;
941
942 layout->set_text(j->second.c_str());
943
944 int tw, th;
945 layout->get_pixel_size(tw, th);
946
947 int p = pos - (th / 2) - 1;
948 p = min (p, height - th);
949 p = max (p, 0);
950
951 if (align_center) {
952 cairo_move_to (cr, (width-tw)/2.0, p);
953 } else {
954 cairo_move_to (cr, width-3-tw, p);
955 }
956
957 cairo_set_line_width(cr, 0.12);
958 cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
959 pango_cairo_layout_path(cr, layout->gobj());
960 cairo_stroke_preserve (cr);
961 cairo_set_line_width(cr, 1.0);
962
963 if ((*i) == DataType::AUDIO) {
964 mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
965 } else {
966 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
967 }
968
969 pango_cairo_show_layout (cr, layout->gobj());
970 cairo_new_path(cr);
971 }
972 }
973
974 // add legend
975 if (types.size() == 1 || overlay_midi == 0) {
976 int tw, th;
977 layout->set_attributes (unit_font_attributes);
978 switch (types.at(0)) {
979 case DataType::AUDIO:
980 switch (type) {
981 case MeterK20:
982 layout->set_text("K20");
983 break;
984 case MeterK14:
985 layout->set_text("K14");
986 break;
987 case MeterK12:
988 layout->set_text("K12");
989 break;
990 default:
991 case MeterPeak:
992 case MeterPeak0dB:
993 case MeterKrms:
994 layout->set_text("dBFS");
995 break;
996 case MeterIEC2EBU:
997 layout->set_text("EBU");
998 break;
999 case MeterIEC2BBC:
1000 layout->set_text("BBC");
1001 break;
1002 case MeterIEC1DIN:
1003 layout->set_text("DIN");
1004 break;
1005 case MeterIEC1NOR:
1006 layout->set_text("NOR");
1007 break;
1008 case MeterVU:
1009 layout->set_text("VU");
1010 break;
1011 }
1012 layout->get_pixel_size(tw, th);
1013 break;
1014 case DataType::MIDI:
1015 layout->set_text("mid");
1016 layout->get_pixel_size(tw, th);
1017 break;
1018 default: // DataType::NIL;
1019 layout->set_text("");
1020 tw = th = 0;
1021 assert (0); // not reached
1022 break;
1023 }
1024 if (!background) {
1025 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
1026 }
1027 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1028 if (tickleft) {
1029 cairo_move_to (cr, width - 2 - tw, height - th - 0.5);
1030 } else {
1031 cairo_move_to (cr, 2, height - th - 0.5);
1032 }
1033 pango_cairo_show_layout (cr, layout->gobj());
1034 }
1035
1036 cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
1037
1038 cairo_destroy (cr);
1039 cairo_surface_destroy (surface);
1040
1041 return pattern;
1042 }
1043
1044 gint
meter_expose_ticks(GdkEventExpose * ev,MeterType type,std::vector<ARDOUR::DataType> types,Gtk::DrawingArea * mta)1045 ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
1046 {
1047 Glib::RefPtr<Gdk::Window> win (mta->get_window());
1048 cairo_t* cr;
1049
1050 cr = gdk_cairo_create (win->gobj());
1051
1052 /* clip to expose area */
1053
1054 gdk_cairo_rectangle (cr, &ev->area);
1055 cairo_clip (cr);
1056
1057 cairo_pattern_t* pattern;
1058 const MeterMatricsMapKey key (mta->get_name(), type, types_to_bit(types));
1059 MetricPatternMap::iterator i = ticks_patterns.find (key);
1060
1061 if (i == ticks_patterns.end()) {
1062 pattern = meter_render_ticks (*mta, type, types);
1063 ticks_patterns[key] = pattern;
1064 } else {
1065 pattern = i->second;
1066 }
1067
1068 cairo_move_to (cr, 0, 0);
1069 cairo_set_source (cr, pattern);
1070
1071 gint width, height;
1072 win->get_size (width, height);
1073
1074 cairo_rectangle (cr, 0, 0, width, height);
1075 cairo_fill (cr);
1076
1077 cairo_destroy (cr);
1078
1079 return true;
1080 }
1081
1082 gint
meter_expose_metrics(GdkEventExpose * ev,MeterType type,std::vector<ARDOUR::DataType> types,Gtk::DrawingArea * mma)1083 ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
1084 {
1085 Glib::RefPtr<Gdk::Window> win (mma->get_window());
1086 cairo_t* cr;
1087
1088 cr = gdk_cairo_create (win->gobj());
1089
1090 /* clip to expose area */
1091
1092 gdk_cairo_rectangle (cr, &ev->area);
1093 cairo_clip (cr);
1094
1095 cairo_pattern_t* pattern;
1096 const MeterMatricsMapKey key (mma->get_name(), type, types_to_bit(types));
1097 MetricPatternMap::iterator i = metric_patterns.find (key);
1098
1099 if (i == metric_patterns.end()) {
1100 pattern = meter_render_metrics (*mma, type, types);
1101 metric_patterns[key] = pattern;
1102 } else {
1103 pattern = i->second;
1104 }
1105
1106 cairo_move_to (cr, 0, 0);
1107
1108 gint width, height;
1109 win->get_size (width, height);
1110 #ifdef NO_OVERSAMPLE
1111 cairo_set_source (cr, pattern);
1112 cairo_rectangle (cr, 0, 0, width, height);
1113 #else
1114 cairo_scale(cr, 0.5, 0.5);
1115 cairo_set_antialias(cr, CAIRO_ANTIALIAS_BEST);
1116 cairo_set_source (cr, pattern);
1117 cairo_rectangle (cr, 0, 0, width * 2., height * 2.);
1118 #endif
1119
1120 cairo_fill (cr);
1121
1122 cairo_destroy (cr);
1123
1124 return true;
1125 }
1126
1127 void
meter_clear_pattern_cache(int which)1128 ArdourMeter::meter_clear_pattern_cache(int which) {
1129 MetricPatternMap::iterator i = metric_patterns.begin();
1130 MetricPatternMap::iterator j = ticks_patterns.begin();
1131
1132 while (i != metric_patterns.end()) {
1133 int m = 4;
1134 MeterMatricsMapKey const * const key = &(i->first);
1135 std::string n = key->_n;
1136 if (n.substr(n.length() - 4) == "Left") { m = 1; }
1137 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1138 if (which & m) {
1139 cairo_pattern_destroy(i->second);
1140 metric_patterns.erase(i++);
1141 } else {
1142 ++i;
1143 }
1144 }
1145
1146 while (j != ticks_patterns.end()) {
1147 int m = 4;
1148 MeterMatricsMapKey const * const key = &(j->first);
1149 std::string n = key->_n;
1150 if (n.substr(n.length() - 4) == "Left") { m = 1; }
1151 if (n.substr(n.length() - 5) == "Right") { m = 2; }
1152 if (which & m) {
1153 cairo_pattern_destroy(j->second);
1154 ticks_patterns.erase(j++);
1155 } else {
1156 ++j;
1157 }
1158 }
1159 RedrawMetrics(); /* EMIT SIGNAL */
1160 }
1161