1 /*
2 * Copyright (C) 2005-2016 Paul Davis <paul@linuxaudiosystems.com>
3 * Copyright (C) 2005 Taybin Rutkin <taybin@taybin.com>
4 * Copyright (C) 2008-2011 David Robillard <d@drobilla.net>
5 * Copyright (C) 2010-2011 Carl Hetherington <carl@carlh.net>
6 * Copyright (C) 2014-2019 Robin Gareus <robin@gareus.org>
7 * Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 */
23
24 #include <cmath>
25 #include <climits>
26 #include <string.h>
27
28 #include <cairo.h>
29 #include <gtkmm/menu.h>
30
31 #include "gtkmm2ext/gtk_ui.h"
32
33 #include "pbd/error.h"
34 #include "pbd/cartesian.h"
35 #include "ardour/panner.h"
36 #include "ardour/panner_shell.h"
37 #include "ardour/pannable.h"
38 #include "ardour/speakers.h"
39
40 #include "gtkmm2ext/colors.h"
41
42 #include "panner2d.h"
43 #include "keyboard.h"
44 #include "gui_thread.h"
45 #include "rgb_macros.h"
46 #include "utils.h"
47 #include "public_editor.h"
48 #include "ui_config.h"
49
50 #include "pbd/i18n.h"
51
52 using namespace std;
53 using namespace Gtk;
54 using namespace ARDOUR;
55 using namespace ARDOUR_UI_UTILS;
56 using namespace PBD;
57 using Gtkmm2ext::Keyboard;
58
59 Panner2d::ColorScheme Panner2d::colors;
60 bool Panner2d::have_colors = false;
61
62 static const int large_size_threshold = 100;
63 static const int large_border_width = 25;
64 static const int small_border_width = 8;
65
Target(const AngularVector & a,const char * txt)66 Panner2d::Target::Target (const AngularVector& a, const char *txt)
67 : position (a)
68 , text (txt)
69 , _selected (false)
70 {
71 }
72
~Target()73 Panner2d::Target::~Target ()
74 {
75 }
76
77 void
set_text(const char * txt)78 Panner2d::Target::set_text (const char* txt)
79 {
80 text = txt;
81 }
82
Panner2d(boost::shared_ptr<PannerShell> p,int32_t h)83 Panner2d::Panner2d (boost::shared_ptr<PannerShell> p, int32_t h)
84 : panner_shell (p)
85 , position (AngularVector (0.0, 0.0), "")
86 , width (0)
87 , height (h)
88 , last_width (0)
89 , have_elevation (false)
90 , _send_mode (false)
91 {
92 if (!have_colors) {
93 set_colors ();
94 have_colors = true;
95 }
96
97 UIConfiguration::instance().ColorsChanged.connect (sigc::mem_fun (*this, &Panner2d::color_handler));
98
99 panner_shell->Changed.connect (panshell_connections, invalidator (*this), boost::bind (&Panner2d::handle_state_change, this), gui_context());
100
101 panner_shell->panner()->SignalPositionChanged.connect (panner_connections, invalidator(*this), boost::bind (&Panner2d::handle_position_change, this), gui_context());
102
103 drag_target = 0;
104 set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
105
106 handle_state_change ();
107 handle_position_change ();
108 }
109
~Panner2d()110 Panner2d::~Panner2d()
111 {
112 for (Targets::iterator i = speakers.begin(); i != speakers.end(); ++i) {
113 delete *i;
114 }
115 for (Targets::iterator i = signals.begin(); i != signals.end(); ++i) {
116 delete *i;
117 }
118 }
119
120 void
set_colors()121 Panner2d::set_colors ()
122 {
123 // TODO get all colors from theme, resolve dups
124 colors.background = UIConfiguration::instance().color ("mono panner bg");
125 colors.crosshairs = 0x4884a9ff; // 0.282, 0.517, 0.662, 1.0
126 colors.signalcircle_border = 0x84c5e1ff; // 0.517, 0.772, 0.882, 1.0
127 colors.signalcircle = 0x4884a9ff; // 0.282, 0.517, 0.662, 1.0 // also used with a = 0.9
128 colors.diffusion = 0x4884a973; // 0.282, 0.517, 0.662, 0.45
129 colors.diffusion_inv = 0xff6b6b73; // 1.0, 0.419, 0.419, 0.45
130 colors.pos_outline = 0xffe7e7d9; // 1.0, 0.905, 0.905, 0.85
131 colors.pos_fill = 0xff6b6bd9; // 1.0, 0.419, 0.419, 0.85
132 colors.signal_outline = 0x84c5e1cc; // 0.517, 0.772, 0.882, 0.8
133 colors.signal_fill = 0x4884a9bf; // 0.282, 0.517, 0.662, 0.75
134 colors.speaker_fill = 0x4884a9ff; // 0.282, 0.517, 0.662, 1.0
135 colors.text = 0x84c5e1e6; // 0.517, 0.772, 0.882, 0.9
136
137 colors.send_bg = UIConfiguration::instance().color ("send bg");
138 colors.send_pan = UIConfiguration::instance().color ("send pan");
139 }
140
141 void
color_handler()142 Panner2d::color_handler ()
143 {
144 set_colors ();
145 queue_draw ();
146 }
147
148 void
reset(uint32_t n_inputs)149 Panner2d::reset (uint32_t n_inputs)
150 {
151 uint32_t nouts = panner_shell->panner()->out().n_audio();
152
153 /* signals */
154
155 while (signals.size() < n_inputs) {
156 add_signal ("", AngularVector());
157 }
158
159 if (signals.size() > n_inputs) {
160 for (uint32_t i = signals.size(); i < n_inputs; ++i) {
161 delete signals[i];
162 }
163
164 signals.resize (n_inputs);
165 }
166
167 label_signals ();
168
169 for (uint32_t i = 0; i < n_inputs; ++i) {
170 signals[i]->position = panner_shell->panner()->signal_position (i);
171 }
172
173 /* add all outputs */
174
175 while (speakers.size() < nouts) {
176 add_speaker (AngularVector());
177 }
178
179 if (speakers.size() > nouts) {
180 for (uint32_t i = nouts; i < speakers.size(); ++i) {
181 delete speakers[i];
182 }
183
184 speakers.resize (nouts);
185 }
186
187 for (Targets::iterator x = speakers.begin(); x != speakers.end(); ++x) {
188 (*x)->visible = false;
189 }
190
191 vector<Speaker>& the_speakers (panner_shell->panner()->get_speakers()->speakers());
192
193 for (uint32_t n = 0; n < nouts; ++n) {
194 char buf[16];
195
196 snprintf (buf, sizeof (buf), "%d", n+1);
197 speakers[n]->set_text (buf);
198 speakers[n]->position = the_speakers[n].angles();
199 speakers[n]->visible = true;
200 }
201
202 queue_draw ();
203 }
204
205 void
on_size_allocate(Gtk::Allocation & alloc)206 Panner2d::on_size_allocate (Gtk::Allocation& alloc)
207 {
208 width = alloc.get_width();
209 height = alloc.get_height();
210
211 if (height > large_size_threshold) {
212 border = large_border_width;
213 } else {
214 border = small_border_width;
215 }
216
217 radius = min (width, height);
218 radius -= border;
219 radius /= 2;
220 radius = rint(radius) + .5;
221
222 hoffset = max ((double) (width - height), border);
223 voffset = max ((double) (height - width), border);
224
225 hoffset = rint(hoffset / 2.0);
226 voffset = rint(voffset / 2.0);
227
228 DrawingArea::on_size_allocate (alloc);
229 }
230
231 int
add_signal(const char * text,const AngularVector & a)232 Panner2d::add_signal (const char* text, const AngularVector& a)
233 {
234 Target* signal = new Target (a, text);
235 signals.push_back (signal);
236 signal->visible = true;
237
238 return 0;
239 }
240
241 int
add_speaker(const AngularVector & a)242 Panner2d::add_speaker (const AngularVector& a)
243 {
244 Target* speaker = new Target (a, "");
245 speakers.push_back (speaker);
246 speaker->visible = true;
247 queue_draw ();
248
249 return speakers.size() - 1;
250 }
251
252 void
handle_state_change()253 Panner2d::handle_state_change ()
254 {
255 panner_connections.drop_connections();
256 if (!panner_shell->panner()) {
257 return;
258 }
259
260 panner_shell->panner()->SignalPositionChanged.connect (panner_connections, invalidator(*this), boost::bind (&Panner2d::handle_position_change, this), gui_context());
261
262 set<Evoral::Parameter> params = panner_shell->pannable()->what_can_be_automated();
263 set<Evoral::Parameter>::iterator p = params.find(PanElevationAutomation);
264 bool elev = have_elevation;
265 have_elevation = (p == params.end()) ? false : true;
266 if (elev != have_elevation) {
267 handle_position_change();
268 }
269 queue_draw ();
270 }
271
272 void
label_signals()273 Panner2d::label_signals ()
274 {
275 uint32_t sz = signals.size();
276
277 switch (sz) {
278 case 0:
279 break;
280
281 case 1:
282 signals[0]->set_text ("");
283 break;
284
285 case 2:
286 signals[0]->set_text (S_("Panner|L"));
287 signals[1]->set_text (S_("Panner|R"));
288 break;
289
290 default:
291 for (uint32_t i = 0; i < sz; ++i) {
292 char buf[64];
293 snprintf (buf, sizeof (buf), "%" PRIu32, i + 1);
294 signals[i]->set_text (buf);
295 }
296 break;
297 }
298 }
299
300 void
handle_position_change()301 Panner2d::handle_position_change ()
302 {
303 uint32_t n;
304 double w = panner_shell->pannable()->pan_width_control->get_value();
305
306 position.position = AngularVector (panner_shell->pannable()->pan_azimuth_control->get_value() * 360.0,
307 panner_shell->pannable()->pan_elevation_control->get_value() * 90.0);
308
309 for (uint32_t i = 0; i < signals.size(); ++i) {
310 signals[i]->position = panner_shell->panner()->signal_position (i);
311 }
312
313 if (w * last_width <= 0) {
314 /* changed sign */
315 label_signals ();
316 }
317
318 last_width = w;
319
320 vector<Speaker>& the_speakers (panner_shell->panner()->get_speakers()->speakers());
321
322 for (n = 0; n < speakers.size(); ++n) {
323 speakers[n]->position = the_speakers[n].angles();
324 }
325
326 queue_draw ();
327 }
328
329 void
move_signal(int which,const AngularVector & a)330 Panner2d::move_signal (int which, const AngularVector& a)
331 {
332 if (which >= int (speakers.size())) {
333 return;
334 }
335
336 speakers[which]->position = a;
337 queue_draw ();
338 }
339
340 Panner2d::Target *
find_closest_object(gdouble x,gdouble y,bool & is_signal)341 Panner2d::find_closest_object (gdouble x, gdouble y, bool& is_signal)
342 {
343 Target *closest = 0;
344 Target *candidate;
345 float distance;
346 float best_distance = FLT_MAX;
347 CartesianVector c;
348
349 /* start with the position itself */
350
351 PBD::AngularVector dp = position.position;
352 if (!have_elevation) dp.ele = 0;
353 dp.azi = 270 - dp.azi;
354 dp.cartesian (c);
355
356 cart_to_gtk (c);
357 best_distance = sqrt ((c.x - x) * (c.x - x) +
358 (c.y - y) * (c.y - y));
359 closest = &position;
360
361 #if 0 // TODO signal grab -> change width, not position
362 for (Targets::const_iterator i = signals.begin(); i != signals.end(); ++i) {
363 candidate = *i;
364
365 candidate->position.cartesian (c);
366 cart_to_gtk (c);
367
368 distance = sqrt ((c.x - x) * (c.x - x) +
369 (c.y - y) * (c.y - y));
370
371 if (distance < best_distance) {
372 closest = candidate;
373 best_distance = distance;
374 }
375 }
376 #endif
377
378 is_signal = true;
379
380 if (height > large_size_threshold) {
381 /* "big" */
382 if (best_distance > 30) { // arbitrary
383 closest = 0;
384 }
385 } else {
386 /* "small" */
387 if (best_distance > 10) { // arbitrary
388 closest = 0;
389 }
390 }
391
392 /* if we didn't find a signal close by, check the speakers */
393
394 if (!closest) {
395 for (Targets::const_iterator i = speakers.begin(); i != speakers.end(); ++i) {
396 candidate = *i;
397 PBD::AngularVector sp = candidate->position;
398 sp.azi = 270 -sp.azi;
399 CartesianVector c;
400 sp.cartesian (c);
401 cart_to_gtk (c);
402
403 distance = sqrt ((c.x - x) * (c.x - x) +
404 (c.y - y) * (c.y - y));
405
406 if (distance < best_distance) {
407 closest = candidate;
408 best_distance = distance;
409 }
410 }
411
412 if (height > large_size_threshold) {
413 /* "big" */
414 if (best_distance < 30) { // arbitrary
415 is_signal = false;
416 } else {
417 closest = 0;
418 }
419 } else {
420 /* "small" */
421 if (best_distance < 10) { // arbitrary
422 is_signal = false;
423 } else {
424 closest = 0;
425 }
426 }
427 }
428
429 return closest;
430 }
431
432 void
set_send_drawing_mode(bool onoff)433 Panner2d::set_send_drawing_mode (bool onoff)
434 {
435 if (_send_mode != onoff) {
436 _send_mode = onoff;
437 queue_draw ();
438 }
439 }
440
441 bool
on_motion_notify_event(GdkEventMotion * ev)442 Panner2d::on_motion_notify_event (GdkEventMotion *ev)
443 {
444 gint x, y;
445 GdkModifierType state;
446
447 if (ev->is_hint) {
448 gdk_window_get_pointer (ev->window, &x, &y, &state);
449 } else {
450 x = (int) floor (ev->x);
451 y = (int) floor (ev->y);
452 state = (GdkModifierType) ev->state;
453 }
454
455 if (ev->state & (GDK_BUTTON1_MASK|GDK_BUTTON2_MASK)) {
456 did_move = true;
457 }
458
459 return handle_motion (x, y, state);
460 }
461
462 #define CSSRGBA(CL) \
463 cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(CL), UINT_RGBA_G_FLT(CL), UINT_RGBA_B_FLT(CL), UINT_RGBA_A_FLT(CL));
464
465 #define CSSRGB(CL, A) \
466 cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(CL), UINT_RGBA_G_FLT(CL), UINT_RGBA_B_FLT(CL), A);
467 bool
on_expose_event(GdkEventExpose * event)468 Panner2d::on_expose_event (GdkEventExpose *event)
469 {
470 CartesianVector c;
471 cairo_t* cr;
472 bool xsmall = (height <= large_size_threshold);
473 const double diameter = radius*2.0;
474
475 cr = gdk_cairo_create (get_window()->gobj());
476
477 /* background */
478
479 cairo_rectangle (cr, event->area.x, event->area.y, event->area.width, event->area.height);
480
481 uint32_t bg = _send_mode ? colors.send_bg : colors.background;
482
483 if (!panner_shell->bypassed()) {
484 CSSRGBA(bg);
485 } else {
486 CSSRGB(bg, 0.2);
487 }
488 cairo_fill_preserve (cr);
489 cairo_clip (cr);
490
491 /* offset to give us some border */
492
493 cairo_translate (cr, hoffset, voffset);
494
495 cairo_set_line_width (cr, 1.0);
496
497 /* horizontal line of "crosshairs" */
498
499 CSSRGBA(colors.crosshairs);
500 cairo_move_to (cr, 0.0, radius);
501 cairo_line_to (cr, diameter, radius);
502 cairo_stroke (cr);
503
504 /* vertical line of "crosshairs" */
505
506 cairo_move_to (cr, radius, 0);
507 cairo_line_to (cr, radius, diameter);
508 cairo_stroke (cr);
509
510 /* the circle on which signals live */
511
512 cairo_set_line_width (cr, 1.5);
513 CSSRGBA(colors.signalcircle_border);
514 cairo_arc (cr, radius, radius, radius, 0.0, 2.0 * M_PI);
515 cairo_stroke (cr);
516
517 for (uint32_t rad = 15; rad < 90; rad += 15) {
518 cairo_set_line_width (cr, .5 + (float)rad / 150.0);
519 if (rad == 45) {
520 CSSRGBA(colors.signalcircle);
521 } else {
522 CSSRGB(colors.signalcircle, 0.9);
523 }
524 cairo_new_path (cr);
525 cairo_arc (cr, radius, radius, radius * sin(M_PI * (float) rad / 180.0), 0, 2.0 * M_PI);
526 cairo_stroke (cr);
527 }
528
529 if (!panner_shell->bypassed()) {
530 /* convention top == front ^= azimuth == .5 (same as stereo/mono panners) */
531
532 if (signals.size() > 1) {
533 /* arc to show "diffusion" */
534
535 double width_angle = fabs (panner_shell->pannable()->pan_width_control->get_value()) * 2 * M_PI;
536 double position_angle = panner_shell->pannable()->pan_azimuth_control->get_value() * 2 * M_PI;
537
538 cairo_save (cr);
539 cairo_translate (cr, radius, radius);
540 cairo_rotate (cr, M_PI / 2.0);
541 cairo_rotate (cr, position_angle - (width_angle/2.0));
542 cairo_move_to (cr, 0, 0);
543 cairo_arc_negative (cr, 0, 0, radius, width_angle, 0.0);
544 cairo_close_path (cr);
545 if (panner_shell->pannable()->pan_width_control->get_value() >= 0.0) {
546 /* normal width */
547 CSSRGBA(colors.diffusion);
548 } else {
549 /* inverse width */
550 CSSRGBA(colors.diffusion_inv);
551 }
552 cairo_fill (cr);
553 cairo_restore (cr);
554 }
555
556 double arc_radius;
557
558 cairo_select_font_face (cr, "sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
559
560 if (xsmall) {
561 arc_radius = 4.0;
562 } else {
563 cairo_set_font_size (cr, 10);
564 arc_radius = 12.0;
565 }
566
567 /* draw position */
568
569 PBD::AngularVector dp = position.position;
570 if (!have_elevation) dp.ele = 0;
571 dp.azi = 270 - dp.azi;
572 dp.cartesian (c);
573 cart_to_gtk (c);
574
575 cairo_new_path (cr);
576 cairo_arc (cr, c.x, c.y, arc_radius + 1.0, 0, 2.0 * M_PI);
577 CSSRGBA(colors.pos_fill);
578 cairo_fill_preserve (cr);
579 CSSRGBA(colors.pos_outline);
580 cairo_stroke (cr);
581
582 /* signals */
583
584 if (signals.size() > 0) {
585 for (Targets::iterator i = signals.begin(); i != signals.end(); ++i) {
586 Target* signal = *i;
587
588 if (signal->visible) {
589
590 /* TODO check for overlap - multiple src at same position
591 * -> visualize it properly
592 */
593 PBD::AngularVector sp = signal->position;
594 if (!have_elevation) sp.ele = 0;
595 sp.azi += 270.0;
596 sp.cartesian (c);
597 cart_to_gtk (c);
598
599 cairo_new_path (cr);
600 cairo_arc (cr, c.x, c.y, arc_radius, 0, 2.0 * M_PI);
601 if (_send_mode && !panner_shell->is_linked_to_route()) {
602 CSSRGBA(colors.send_pan);
603 } else {
604 CSSRGBA(colors.signal_fill);
605 }
606 cairo_fill_preserve (cr);
607 CSSRGBA(colors.signal_outline);
608 cairo_stroke (cr);
609
610 if (!xsmall && !signal->text.empty()) {
611 CSSRGBA(colors.text);
612 /* the +/- adjustments are a hack to try to center the text in the circle
613 * TODO use pango get_pixel_size() -- see mono_panner.cc
614 */
615 if (xsmall) {
616 cairo_move_to (cr, c.x - 1, c.y + 1);
617 } else {
618 cairo_move_to (cr, c.x - 4, c.y + 4);
619 }
620 cairo_show_text (cr, signal->text.c_str());
621 }
622 }
623 }
624 }
625
626 /* speakers */
627
628 int n = 0;
629
630 for (Targets::iterator i = speakers.begin(); i != speakers.end(); ++i) {
631 Target *speaker = *i;
632 char buf[256];
633 ++n;
634
635 if (speaker->visible) {
636
637 PBD::AngularVector sp = speaker->position;
638 sp.azi += 270.0;
639 CartesianVector c;
640 sp.cartesian (c);
641 cart_to_gtk (c);
642
643 snprintf (buf, sizeof (buf), "%d", n);
644
645 /* stroke out a speaker shape */
646
647 cairo_move_to (cr, c.x, c.y);
648 cairo_save (cr);
649 cairo_rotate (cr, -(sp.azi/360.0) * (2.0 * M_PI));
650 if (xsmall) {
651 cairo_scale (cr, 0.8, 0.8);
652 } else {
653 cairo_scale (cr, 1.2, 1.2);
654 }
655 cairo_rel_line_to (cr, 4, -2);
656 cairo_rel_line_to (cr, 0, -7);
657 cairo_rel_line_to (cr, 5, +5);
658 cairo_rel_line_to (cr, 5, 0);
659 cairo_rel_line_to (cr, 0, 5);
660 cairo_rel_line_to (cr, -5, 0);
661 cairo_rel_line_to (cr, -5, +5);
662 cairo_rel_line_to (cr, 0, -7);
663 cairo_close_path (cr);
664 CSSRGBA(colors.speaker_fill);
665 cairo_fill (cr);
666 cairo_restore (cr);
667
668 if (!xsmall) {
669 cairo_set_font_size (cr, 16);
670
671 /* move the text in just a bit */
672
673 AngularVector textpos (speaker->position.azi + 270.0, speaker->position.ele, 0.85);
674
675 textpos.cartesian (c);
676 cart_to_gtk (c);
677 cairo_move_to (cr, c.x, c.y);
678 cairo_show_text (cr, buf);
679 }
680
681 }
682 }
683 }
684
685 cairo_destroy (cr);
686
687 return true;
688 }
689
690 bool
on_button_press_event(GdkEventButton * ev)691 Panner2d::on_button_press_event (GdkEventButton *ev)
692 {
693 GdkModifierType state;
694 int x;
695 int y;
696 bool is_signal;
697
698 if (ev->type == GDK_2BUTTON_PRESS && ev->button == 1) {
699 return false;
700 }
701
702 did_move = false;
703
704 switch (ev->button) {
705 case 1:
706 case 2:
707 x = ev->x - hoffset;
708 y = ev->y - voffset;
709
710 if ((drag_target = find_closest_object (x, y, is_signal)) != 0) {
711 if (!is_signal) {
712 panner_shell->panner()->set_position (drag_target->position.azi/360.0);
713 drag_target = 0;
714 } else {
715 drag_target->set_selected (true);
716 }
717 }
718
719 state = (GdkModifierType) ev->state;
720 return handle_motion (ev->x, ev->y, state);
721 break;
722
723 default:
724 break;
725 }
726
727 return false;
728 }
729
730 bool
on_button_release_event(GdkEventButton * ev)731 Panner2d::on_button_release_event (GdkEventButton *ev)
732 {
733 gint x, y;
734 GdkModifierType state;
735 bool ret = false;
736
737 switch (ev->button) {
738 case 1:
739 x = (int) floor (ev->x);
740 y = (int) floor (ev->y);
741 state = (GdkModifierType) ev->state;
742 ret = handle_motion (x, y, state);
743 drag_target = 0;
744 break;
745
746 case 2:
747 x = (int) floor (ev->x);
748 y = (int) floor (ev->y);
749 state = (GdkModifierType) ev->state;
750
751 if (Keyboard::modifier_state_contains (state, Keyboard::TertiaryModifier)) {
752 toggle_bypass ();
753 ret = true;
754 } else {
755 ret = handle_motion (x, y, state);
756 }
757
758 drag_target = 0;
759 break;
760
761 case 3:
762 break;
763
764 }
765
766 return ret;
767 }
768
769 gint
handle_motion(gint evx,gint evy,GdkModifierType state)770 Panner2d::handle_motion (gint evx, gint evy, GdkModifierType state)
771 {
772 if (drag_target == 0) {
773 return false;
774 }
775
776 if ((state & (GDK_BUTTON1_MASK|GDK_BUTTON2_MASK)) == 0) {
777 return false;
778 }
779
780 evx -= hoffset;
781 evy -= voffset;
782
783 if (state & GDK_BUTTON1_MASK && !(state & GDK_BUTTON2_MASK)) {
784 CartesianVector c;
785 bool need_move = false;
786
787 drag_target->position.cartesian (c);
788 cart_to_gtk (c);
789
790 if ((evx != c.x) || (evy != c.y)) {
791 need_move = true;
792 }
793
794 if (need_move) {
795 CartesianVector cp (evx, evy, 0.0);
796 AngularVector av;
797 gtk_to_cart (cp);
798
799 if (!have_elevation) {
800 clamp_to_circle (cp.x, cp.y);
801 cp.angular (av);
802 av.azi = fmod(270 - av.azi, 360);
803 if (drag_target == &position) {
804 double degree_fract = av.azi / 360.0;
805 panner_shell->panner()->set_position (degree_fract);
806 }
807 } else {
808 /* sphere projection */
809 sphere_project (cp.x, cp.y, cp.z);
810
811 double r2d = 180.0 / M_PI;
812 av.azi = r2d * atan2(cp.y, cp.x);
813 av.ele = r2d * asin(cp.z);
814 av.azi = fmod(270 - av.azi, 360);
815
816 if (drag_target == &position) {
817 double azi_fract = av.azi / 360.0;
818 double ele_fract = av.ele / 90.0;
819 panner_shell->panner()->set_position (azi_fract);
820 panner_shell->panner()->set_elevation (ele_fract);
821 }
822 }
823 }
824 }
825
826 return true;
827 }
828
829 bool
on_scroll_event(GdkEventScroll * ev)830 Panner2d::on_scroll_event (GdkEventScroll* ev)
831 {
832 switch (ev->direction) {
833 case GDK_SCROLL_UP:
834 case GDK_SCROLL_RIGHT:
835 panner_shell->panner()->set_position (panner_shell->pannable()->pan_azimuth_control->get_value() - 1.0/360.0);
836 break;
837
838 case GDK_SCROLL_DOWN:
839 case GDK_SCROLL_LEFT:
840 panner_shell->panner()->set_position (panner_shell->pannable()->pan_azimuth_control->get_value() + 1.0/360.0);
841 break;
842 }
843 return true;
844 }
845
846 void
cart_to_gtk(CartesianVector & c) const847 Panner2d::cart_to_gtk (CartesianVector& c) const
848 {
849 /* cartesian coordinate space:
850 * center = 0.0
851 * dimension = 2.0 * 2.0
852 * increasing y moves up
853 * so max values along each axis are -1..+1
854 *
855 * GTK uses a coordinate space that is:
856 * top left = 0.0
857 * dimension = (radius*2.0) * (radius*2.0)
858 * increasing y moves down
859 */
860 const double diameter = radius*2.0;
861
862 c.x = diameter * ((c.x + 1.0) / 2.0);
863 /* extra subtraction inverts the y-axis to match "increasing y moves down" */
864 c.y = diameter - (diameter * ((c.y + 1.0) / 2.0));
865 }
866
867 void
gtk_to_cart(CartesianVector & c) const868 Panner2d::gtk_to_cart (CartesianVector& c) const
869 {
870 const double diameter = radius*2.0;
871 c.x = ((c.x / diameter) * 2.0) - 1.0;
872 c.y = (((diameter - c.y) / diameter) * 2.0) - 1.0;
873 }
874
875 void
sphere_project(double & x,double & y,double & z)876 Panner2d::sphere_project (double& x, double& y, double& z)
877 {
878 double r, r2;
879 r2 = x * x + y * y;
880 if (r2 < 1.0) {
881 z = sqrt (1.0 - r2);
882 } else {
883 r = sqrt (r2);
884 x = x / r;
885 y = y / r;
886 z = 0.0;
887 }
888 }
889
890 void
clamp_to_circle(double & x,double & y)891 Panner2d::clamp_to_circle (double& x, double& y)
892 {
893 double azi, ele;
894 double z = 0.0;
895 double l;
896 PBD::cartesian_to_spherical (x, y, z, azi, ele, l);
897 PBD::spherical_to_cartesian (azi, ele, 1.0, x, y, z);
898 }
899
900 void
toggle_bypass()901 Panner2d::toggle_bypass ()
902 {
903 panner_shell->set_bypassed (!panner_shell->bypassed());
904 }
905
Panner2dWindow(boost::shared_ptr<PannerShell> p,int32_t h,uint32_t inputs)906 Panner2dWindow::Panner2dWindow (boost::shared_ptr<PannerShell> p, int32_t h, uint32_t inputs)
907 : ArdourWindow (_("Panner (2D)"))
908 , widget (p, h)
909 , bypass_button (_("Bypass"))
910 , width_adjustment (0, -100, 100, 1, 5, 0)
911 , width_spinner (width_adjustment)
912 {
913 widget.set_name ("MixerPanZone");
914
915 set_title (_("Panner"));
916 widget.set_size_request (h, h);
917
918 bypass_button.signal_toggled().connect (sigc::mem_fun (*this, &Panner2dWindow::bypass_toggled));
919 width_spinner.signal_changed().connect (sigc::mem_fun (*this, &Panner2dWindow::width_changed));
920
921 p->Changed.connect (panshell_connections, invalidator (*this), boost::bind (&Panner2dWindow::set_bypassed, this), gui_context());
922 /* needed for the width-spinbox in the main window */
923 p->PannableChanged.connect (panshell_connections, invalidator (*this), boost::bind (&Panner2dWindow::pannable_handler, this), gui_context());
924 p->pannable()->pan_width_control->Changed.connect (panvalue_connections, invalidator(*this), boost::bind (&Panner2dWindow::set_width, this), gui_context());
925
926
927 button_box.set_spacing (6);
928 button_box.pack_start (bypass_button, false, false);
929
930 left_side.set_spacing (6);
931
932 left_side.pack_start (button_box, false, false);
933
934 Gtk::Label* l = manage (new Label (
935 p->pannable()->describe_parameter(PanWidthAutomation),
936 Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
937 spinner_box.pack_start (*l, false, false);
938 spinner_box.pack_start (width_spinner, false, false);
939 left_side.pack_start (spinner_box, false, false);
940
941 l->show ();
942 bypass_button.show ();
943 button_box.show ();
944 width_spinner.show ();
945 spinner_box.show ();
946 left_side.show ();
947
948 hpacker.set_spacing (6);
949 hpacker.set_border_width (12);
950 hpacker.pack_start (widget, false, false);
951 hpacker.pack_start (left_side, false, false);
952 hpacker.show ();
953
954 add (hpacker);
955 reset (inputs);
956 set_width();
957 set_bypassed();
958 widget.show ();
959 }
960
961 void
reset(uint32_t n_inputs)962 Panner2dWindow::reset (uint32_t n_inputs)
963 {
964 widget.reset (n_inputs);
965 }
966
967 void
bypass_toggled()968 Panner2dWindow::bypass_toggled ()
969 {
970 bool view = bypass_button.get_active ();
971 bool model = widget.get_panner_shell()->bypassed ();
972
973 if (model != view) {
974 widget.get_panner_shell()->set_bypassed (view);
975 }
976 }
977 void
width_changed()978 Panner2dWindow::width_changed ()
979 {
980 float model = widget.get_panner_shell()->pannable()->pan_width_control->get_value();
981 float view = width_spinner.get_value() / 100.0;
982 if (model != view) {
983 widget.get_panner_shell()->panner()->set_width (view);
984 }
985 }
986
987 void
pannable_handler()988 Panner2dWindow::pannable_handler ()
989 {
990 panvalue_connections.drop_connections();
991 widget.get_panner_shell()->pannable()->pan_width_control->Changed.connect (panvalue_connections, invalidator(*this), boost::bind (&Panner2dWindow::set_width, this), gui_context());
992 set_width();
993 }
994
995 void
set_bypassed()996 Panner2dWindow::set_bypassed ()
997 {
998 bool view = bypass_button.get_active ();
999 bool model = widget.get_panner_shell()->bypassed ();
1000 if (model != view) {
1001 bypass_button.set_active(model);
1002 }
1003
1004 set<Evoral::Parameter> params = widget.get_panner_shell()->pannable()->what_can_be_automated();
1005 set<Evoral::Parameter>::iterator p = params.find(PanWidthAutomation);
1006 if (p == params.end()) {
1007 spinner_box.set_sensitive(false);
1008 } else {
1009 spinner_box.set_sensitive(true);
1010 }
1011 }
1012
1013 void
set_width()1014 Panner2dWindow::set_width ()
1015 {
1016 // rounding of spinbox is different from slider -- TODO use slider
1017 float model = (widget.get_panner_shell()->pannable()->pan_width_control->get_value() * 100.0);
1018 float view = (width_spinner.get_value());
1019 if (model != view) {
1020 width_spinner.set_value (model);
1021 }
1022 }
1023
1024 bool
on_key_press_event(GdkEventKey * event)1025 Panner2dWindow::on_key_press_event (GdkEventKey* event)
1026 {
1027 return relay_key_press (event, this);
1028 }
1029
1030 bool
on_key_release_event(GdkEventKey *)1031 Panner2dWindow::on_key_release_event (GdkEventKey*)
1032 {
1033 return true;
1034 }
1035