1 /*
2 * Copyright (C) 2005-2006 Taybin Rutkin <taybin@taybin.com>
3 * Copyright (C) 2005-2009 Nick Mainsbridge <mainsbridge@gmail.com>
4 * Copyright (C) 2005-2018 Paul Davis <paul@linuxaudiosystems.com>
5 * Copyright (C) 2005 Karsten Wiese <fzuuzf@googlemail.com>
6 * Copyright (C) 2006-2007 Doug McLain <doug@nostar.net>
7 * Copyright (C) 2006-2009 Sampo Savolainen <v2@iki.fi>
8 * Copyright (C) 2007-2015 David Robillard <d@drobilla.net>
9 * Copyright (C) 2007-2015 Tim Mayberry <mojofunk@gmail.com>
10 * Copyright (C) 2009-2012 Carl Hetherington <carl@carlh.net>
11 * Copyright (C) 2013-2019 Robin Gareus <robin@gareus.org>
12 * Copyright (C) 2013 John Emmas <john@creativepost.co.uk>
13 * Copyright (C) 2015 André Nusser <andre.nusser@googlemail.com>
14 *
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License along
26 * with this program; if not, write to the Free Software Foundation, Inc.,
27 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
28 */
29
30 #ifdef WAF_BUILD
31 #include "gtk2ardour-config.h"
32 #endif
33
34 #include <cstdlib>
35 #include <clocale>
36 #include <cstring>
37 #include <cctype>
38 #include <cmath>
39 #include <list>
40 #include <sys/stat.h>
41
42 #include <boost/algorithm/string.hpp>
43
44 #include <gtk/gtkpaned.h>
45 #include <gtkmm/combo.h>
46 #include <gtkmm/label.h>
47 #include <gtkmm/paned.h>
48 #include <gtkmm/rc.h>
49 #include <gtkmm/stock.h>
50 #include <gtkmm/window.h>
51
52 #include "pbd/basename.h"
53 #include "pbd/file_utils.h"
54
55 #include "ardour/audioengine.h"
56 #include "ardour/filesystem_paths.h"
57 #include "ardour/search_paths.h"
58
59 #include "gtkmm2ext/colors.h"
60 #include "gtkmm2ext/utils.h"
61
62 #include "canvas/item.h"
63
64 #include "actions.h"
65 #include "context_menu_helper.h"
66 #include "debug.h"
67 #include "public_editor.h"
68 #include "keyboard.h"
69 #include "utils.h"
70 #include "pbd/i18n.h"
71 #include "rgb_macros.h"
72 #include "gui_thread.h"
73 #include "ui_config.h"
74 #include "ardour_dialog.h"
75 #include "ardour_ui.h"
76
77 using namespace std;
78 using namespace Gtk;
79 using namespace Glib;
80 using namespace PBD;
81 using Gtkmm2ext::Keyboard;
82
83 namespace ARDOUR_UI_UTILS {
84 sigc::signal<void> DPIReset;
85 }
86
87 #ifdef PLATFORM_WINDOWS
88 #define random() rand()
89 #endif
90
91
92 /** Add an element to a menu, settings its sensitivity.
93 * @param m Menu to add to.
94 * @param e Element to add.
95 * @param s true to make sensitive, false to make insensitive
96 */
97 void
add_item_with_sensitivity(Menu_Helpers::MenuList & m,Menu_Helpers::MenuElem e,bool s)98 ARDOUR_UI_UTILS::add_item_with_sensitivity (Menu_Helpers::MenuList& m, Menu_Helpers::MenuElem e, bool s)
99 {
100 m.push_back (e);
101 if (!s) {
102 m.back().set_sensitive (false);
103 }
104 }
105
106
107 gint
just_hide_it(GdkEventAny *,Gtk::Window * win)108 ARDOUR_UI_UTILS::just_hide_it (GdkEventAny */*ev*/, Gtk::Window *win)
109 {
110 win->hide ();
111 return 0;
112 }
113
114 static bool
idle_notify_engine_stopped()115 idle_notify_engine_stopped ()
116 {
117 Glib::RefPtr<ToggleAction> tact = ActionManager::get_toggle_action ("Window", "toggle-audio-midi-setup");
118
119 MessageDialog msg (
120 _("The current operation is not possible because of an error communicating with the audio hardware."),
121 false, Gtk::MESSAGE_WARNING, Gtk::BUTTONS_NONE, true);
122
123 msg.add_button (_("Cancel"), Gtk::RESPONSE_CANCEL);
124
125 if (tact && !tact->get_active()) {
126 msg.add_button (_("Configure Hardware"), Gtk::RESPONSE_OK);
127 }
128
129 if (msg.run () == Gtk::RESPONSE_OK) {
130 tact->set_active ();
131 }
132 return false; /* do not call again */
133 }
134
135 bool
engine_is_running()136 ARDOUR_UI_UTILS::engine_is_running ()
137 {
138 if (ARDOUR::AudioEngine::instance()->running ()) {
139 return true;
140 }
141 Glib::signal_idle().connect (sigc::ptr_fun (&idle_notify_engine_stopped));
142 return false;
143 }
144
145
146 /* xpm2rgb copied from nixieclock, which bore the legend:
147
148 nixieclock - a nixie desktop timepiece
149 Copyright (C) 2000 Greg Ercolano, erco@3dsite.com
150
151 and was released under the GPL.
152 */
153
154 unsigned char*
xpm2rgb(const char ** xpm,uint32_t & w,uint32_t & h)155 ARDOUR_UI_UTILS::xpm2rgb (const char** xpm, uint32_t& w, uint32_t& h)
156 {
157 static long vals[256], val;
158 uint32_t t, x, y, colors, cpp;
159 unsigned char c;
160 unsigned char *savergb, *rgb;
161
162 // PARSE HEADER
163
164 if ( sscanf(xpm[0], "%u%u%u%u", &w, &h, &colors, &cpp) != 4 ) {
165 error << string_compose (_("bad XPM header %1"), xpm[0])
166 << endmsg;
167 return 0;
168 }
169
170 savergb = rgb = (unsigned char*) malloc (h * w * 3);
171
172 // LOAD XPM COLORMAP LONG ENOUGH TO DO CONVERSION
173 for (t = 0; t < colors; ++t) {
174 sscanf (xpm[t+1], "%c c #%lx", &c, &val);
175 vals[c] = val;
176 }
177
178 // COLORMAP -> RGB CONVERSION
179 // Get low 3 bytes from vals[]
180 //
181
182 const char *p;
183 for (y = h-1; y > 0; --y) {
184
185 for (p = xpm[1+colors+(h-y-1)], x = 0; x < w; x++, rgb += 3) {
186 val = vals[(int)*p++];
187 *(rgb+2) = val & 0xff; val >>= 8; // 2:B
188 *(rgb+1) = val & 0xff; val >>= 8; // 1:G
189 *(rgb+0) = val & 0xff; // 0:R
190 }
191 }
192
193 return (savergb);
194 }
195
196 unsigned char*
xpm2rgba(const char ** xpm,uint32_t & w,uint32_t & h)197 ARDOUR_UI_UTILS::xpm2rgba (const char** xpm, uint32_t& w, uint32_t& h)
198 {
199 static long vals[256], val;
200 uint32_t t, x, y, colors, cpp;
201 unsigned char c;
202 unsigned char *savergb, *rgb;
203 char transparent;
204
205 // PARSE HEADER
206
207 if ( sscanf(xpm[0], "%u%u%u%u", &w, &h, &colors, &cpp) != 4 ) {
208 error << string_compose (_("bad XPM header %1"), xpm[0])
209 << endmsg;
210 return 0;
211 }
212
213 savergb = rgb = (unsigned char*) malloc (h * w * 4);
214
215 // LOAD XPM COLORMAP LONG ENOUGH TO DO CONVERSION
216
217 if (strstr (xpm[1], "None")) {
218 sscanf (xpm[1], "%c", &transparent);
219 t = 1;
220 } else {
221 transparent = 0;
222 t = 0;
223 }
224
225 for (; t < colors; ++t) {
226 sscanf (xpm[t+1], "%c c #%lx", &c, &val);
227 vals[c] = val;
228 }
229
230 // COLORMAP -> RGB CONVERSION
231 // Get low 3 bytes from vals[]
232 //
233
234 const char *p;
235 for (y = h-1; y > 0; --y) {
236
237 char alpha;
238
239 for (p = xpm[1+colors+(h-y-1)], x = 0; x < w; x++, rgb += 4) {
240
241 if (transparent && (*p++ == transparent)) {
242 alpha = 0;
243 val = 0;
244 } else {
245 alpha = 255;
246 val = vals[(int)*p];
247 }
248
249 *(rgb+3) = alpha; // 3: alpha
250 *(rgb+2) = val & 0xff; val >>= 8; // 2:B
251 *(rgb+1) = val & 0xff; val >>= 8; // 1:G
252 *(rgb+0) = val & 0xff; // 0:R
253 }
254 }
255
256 return (savergb);
257 }
258
259 /** Returns a Pango::FontDescription given a string describing the font.
260 *
261 * If the returned FontDescription does not specify a family, then
262 * the family is set to "Sans". This mirrors GTK's behaviour in
263 * gtkstyle.c.
264 *
265 * Some environments will force Pango to specify the family
266 * even if it was not specified in the string describing the font.
267 * Such environments should be left unaffected by this function,
268 * since the font family will be left alone.
269 *
270 * There may be other similar font specification enforcement
271 * that we might add here later.
272 */
273 Pango::FontDescription
sanitized_font(std::string const & name)274 ARDOUR_UI_UTILS::sanitized_font (std::string const& name)
275 {
276 Pango::FontDescription fd (name);
277
278 if (fd.get_family().empty()) {
279 /* default: "Sans" or "ArdourSans" */
280 fd.set_family (UIConfiguration::instance ().get_ui_font_family ());
281 }
282
283 return fd;
284 }
285
286 Pango::FontDescription
get_font_for_style(string widgetname)287 ARDOUR_UI_UTILS::get_font_for_style (string widgetname)
288 {
289 Gtk::Window window (WINDOW_TOPLEVEL);
290 Gtk::Label foobar;
291 Glib::RefPtr<Gtk::Style> style;
292
293 window.add (foobar);
294 foobar.set_name (widgetname);
295 foobar.ensure_style();
296
297 style = foobar.get_style ();
298
299 Glib::RefPtr<const Pango::Layout> layout = foobar.get_layout();
300
301 PangoFontDescription *pfd = const_cast<PangoFontDescription *> (pango_layout_get_font_description(const_cast<PangoLayout *>(layout->gobj())));
302
303 if (!pfd) {
304
305 /* layout inherited its font description from a PangoContext */
306
307 PangoContext* ctxt = (PangoContext*) pango_layout_get_context (const_cast<PangoLayout*>(layout->gobj()));
308 pfd = pango_context_get_font_description (ctxt);
309 return Pango::FontDescription (pfd); /* make a copy */
310 }
311
312 return Pango::FontDescription (pfd); /* make a copy */
313 }
314
315 Gdk::Color
gdk_color_from_rgb(uint32_t rgb)316 ARDOUR_UI_UTILS::gdk_color_from_rgb (uint32_t rgb)
317 {
318 Gdk::Color c;
319 set_color_from_rgb (c, rgb);
320 return c;
321 }
322
323 Gdk::Color
gdk_color_from_rgba(uint32_t rgba)324 ARDOUR_UI_UTILS::gdk_color_from_rgba (uint32_t rgba)
325 {
326 Gdk::Color c;
327 set_color_from_rgb (c, rgba >> 8);
328 return c;
329 }
330
331 void
set_color_from_rgb(Gdk::Color & c,uint32_t rgb)332 ARDOUR_UI_UTILS::set_color_from_rgb (Gdk::Color& c, uint32_t rgb)
333 {
334 /* Gdk::Color color ranges are 16 bit, so scale from 8 bit by
335 multiplying by 256.
336 */
337 c.set_rgb ((rgb >> 16)*256, ((rgb & 0xff00) >> 8)*256, (rgb & 0xff)*256);
338 }
339
340 void
set_color_from_rgba(Gdk::Color & c,uint32_t rgba)341 ARDOUR_UI_UTILS::set_color_from_rgba (Gdk::Color& c, uint32_t rgba)
342 {
343 /* Gdk::Color color ranges are 16 bit, so scale from 8 bit by
344 multiplying by 256.
345 */
346 c.set_rgb ((rgba >> 24)*256, ((rgba & 0xff0000) >> 16)*256, ((rgba & 0xff00) >> 8)*256);
347 }
348
349 uint32_t
gdk_color_to_rgba(Gdk::Color const & c)350 ARDOUR_UI_UTILS::gdk_color_to_rgba (Gdk::Color const& c)
351 {
352 /* since alpha value is not available from a Gdk::Color, it is
353 hardcoded as 0xff (aka 255 or 1.0)
354 */
355
356 const uint32_t r = c.get_red_p () * 255.0;
357 const uint32_t g = c.get_green_p () * 255.0;
358 const uint32_t b = c.get_blue_p () * 255.0;
359 const uint32_t a = 0xff;
360
361 return RGBA_TO_UINT (r,g,b,a);
362 }
363
364 bool
relay_key_press(GdkEventKey * ev,Gtk::Window * win)365 ARDOUR_UI_UTILS::relay_key_press (GdkEventKey* ev, Gtk::Window* win)
366 {
367 return ARDOUR_UI::instance()->key_event_handler (ev, win);
368 }
369
370 bool
emulate_key_event(unsigned int keyval)371 ARDOUR_UI_UTILS::emulate_key_event (unsigned int keyval)
372 {
373 GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET(ARDOUR_UI::instance()->main_window().gobj()));
374 GdkKeymap *keymap = gdk_keymap_get_for_display (display);
375 GdkKeymapKey *keymapkey = NULL;
376 gint n_keys;
377
378 if (!gdk_keymap_get_entries_for_keyval(keymap, keyval, &keymapkey, &n_keys)) return false;
379 if (n_keys !=1) { g_free(keymapkey); return false;}
380
381 Gtk::Window& main_window (ARDOUR_UI::instance()->main_window());
382
383 GdkEventKey ev;
384 ev.type = GDK_KEY_PRESS;
385 ev.window = main_window.get_window()->gobj();
386 ev.send_event = FALSE;
387 ev.time = 0;
388 ev.state = 0;
389 ev.keyval = keyval;
390 ev.length = 0;
391 ev.string = const_cast<gchar*> ("");
392 ev.hardware_keycode = keymapkey[0].keycode;
393 ev.group = keymapkey[0].group;
394 g_free(keymapkey);
395
396 relay_key_press (&ev, &main_window);
397 ev.type = GDK_KEY_RELEASE;
398 return relay_key_press(&ev, &main_window);
399 }
400
401 Glib::RefPtr<Gdk::Pixbuf>
get_xpm(std::string name)402 ARDOUR_UI_UTILS::get_xpm (std::string name)
403 {
404 if (!xpm_map[name]) {
405
406 Searchpath spath(ARDOUR::ardour_data_search_path());
407
408 spath.add_subdirectory_to_paths("pixmaps");
409
410 std::string data_file_path;
411
412 if(!find_file (spath, name, data_file_path)) {
413 fatal << string_compose (_("cannot find XPM file for %1"), name) << endmsg;
414 }
415
416 try {
417 xpm_map[name] = Gdk::Pixbuf::create_from_file (data_file_path);
418 } catch (const Glib::Error& e) {
419 warning << "Caught Glib::Error: " << e.what() << endmsg;
420 }
421 }
422
423 return xpm_map[name];
424 }
425
426 void
get_color_themes(map<std::string,std::string> & themes)427 ARDOUR_UI_UTILS::get_color_themes (map<std::string,std::string>& themes)
428 {
429 Searchpath spath(ARDOUR::theme_search_path());
430
431 for (vector<string>::iterator s = spath.begin(); s != spath.end(); ++s) {
432
433 vector<string> entries;
434
435 find_files_matching_pattern (entries, *s, string ("*") + UIConfiguration::color_file_suffix);
436
437 for (vector<string>::iterator e = entries.begin(); e != entries.end(); ++e) {
438
439 XMLTree tree;
440
441 tree.read ((*e).c_str());
442 XMLNode* root = tree.root();
443
444 if (!root || root->name() != X_("Ardour")) {
445 continue;
446 }
447
448 XMLProperty const* prop = root->property (X_("theme-name"));
449
450 if (!prop) {
451 continue;
452 }
453
454 std::string color_name = basename_nosuffix(*e);
455 size_t sep = color_name.find_first_of("-");
456 if (sep != string::npos) {
457 color_name = color_name.substr (0, sep);
458 }
459 themes.insert (make_pair (prop->value(), color_name));
460 }
461 }
462 }
463
464 vector<string>
get_icon_sets()465 ARDOUR_UI_UTILS::get_icon_sets ()
466 {
467 Searchpath spath(ARDOUR::ardour_data_search_path());
468 spath.add_subdirectory_to_paths ("icons");
469 vector<string> r;
470
471 r.push_back (_("default"));
472
473 for (vector<string>::iterator s = spath.begin(); s != spath.end(); ++s) {
474
475 vector<string> entries;
476
477 get_paths (entries, *s, false, false);
478
479 for (vector<string>::iterator e = entries.begin(); e != entries.end(); ++e) {
480 if (Glib::file_test (*e, Glib::FILE_TEST_IS_DIR)) {
481 r.push_back (Glib::filename_to_utf8 (Glib::path_get_basename(*e)));
482 }
483 }
484 }
485
486 return r;
487 }
488
489 std::string
get_icon_path(const char * cname,string icon_set,bool is_image)490 ARDOUR_UI_UTILS::get_icon_path (const char* cname, string icon_set, bool is_image)
491 {
492 std::string data_file_path;
493 string name = cname;
494
495 if (is_image) {
496 name += X_(".png");
497 }
498
499 Searchpath spath(ARDOUR::ardour_data_search_path());
500
501 if (!icon_set.empty() && icon_set != _("default")) {
502
503 /* add "icons/icon_set" but .. not allowed to add both of these at once */
504 spath.add_subdirectory_to_paths ("icons");
505 spath.add_subdirectory_to_paths (icon_set);
506
507 find_file (spath, name, data_file_path);
508 } else {
509 spath.add_subdirectory_to_paths ("icons");
510 find_file (spath, name, data_file_path);
511 }
512
513 if (data_file_path.empty()) {
514 Searchpath rc (ARDOUR::ardour_data_search_path());
515 rc.add_subdirectory_to_paths ("resources");
516 find_file (rc, name, data_file_path);
517 }
518
519 if (is_image && data_file_path.empty()) {
520
521 if (!icon_set.empty() && icon_set != _("default")) {
522 warning << string_compose (_("icon \"%1\" not found for icon set \"%2\", fallback to default"), cname, icon_set) << endmsg;
523 }
524
525 Searchpath def (ARDOUR::ardour_data_search_path());
526 def.add_subdirectory_to_paths ("icons");
527
528 if (!find_file (def, name, data_file_path)) {
529 fatal << string_compose (_("cannot find icon image for %1 using %2"), name, spath.to_string()) << endmsg;
530 abort(); /*NOTREACHED*/
531 }
532 }
533
534 return data_file_path;
535 }
536
537 Glib::RefPtr<Gdk::Pixbuf>
get_icon(const char * cname,string icon_set)538 ARDOUR_UI_UTILS::get_icon (const char* cname, string icon_set)
539 {
540 Glib::RefPtr<Gdk::Pixbuf> img;
541 try {
542 img = Gdk::Pixbuf::create_from_file (get_icon_path (cname, icon_set));
543 } catch (const Gdk::PixbufError &e) {
544 cerr << "Caught PixbufError: " << e.what() << endl;
545 } catch (...) {
546 error << string_compose (_("Caught exception while loading icon named %1"), cname) << endmsg;
547 }
548
549 return img;
550 }
551
552 namespace ARDOUR_UI_UTILS {
553 Glib::RefPtr<Gdk::Pixbuf>
get_icon(const char * cname)554 get_icon (const char* cname)
555 {
556 Glib::RefPtr<Gdk::Pixbuf> img;
557 try {
558 img = Gdk::Pixbuf::create_from_file (get_icon_path (cname));
559 } catch (const Gdk::PixbufError &e) {
560 cerr << "Caught PixbufError: " << e.what() << endl;
561 } catch (...) {
562 error << string_compose (_("Caught exception while loading icon named %1"), cname) << endmsg;
563 }
564
565 return img;
566 }
567 }
568
569 string
longest(vector<string> & strings)570 ARDOUR_UI_UTILS::longest (vector<string>& strings)
571 {
572 if (strings.empty()) {
573 return string ("");
574 }
575
576 vector<string>::iterator longest = strings.begin();
577 string::size_type longest_length = (*longest).length();
578
579 vector<string>::iterator i = longest;
580 ++i;
581
582 while (i != strings.end()) {
583
584 string::size_type len = (*i).length();
585
586 if (len > longest_length) {
587 longest = i;
588 longest_length = len;
589 }
590
591 ++i;
592 }
593
594 return *longest;
595 }
596
597 bool
key_is_legal_for_numeric_entry(guint keyval)598 ARDOUR_UI_UTILS::key_is_legal_for_numeric_entry (guint keyval)
599 {
600 /* we assume that this does not change over the life of the process
601 */
602
603 static int comma_decimal = -1;
604
605 switch (keyval) {
606 case GDK_period:
607 case GDK_comma:
608 if (comma_decimal < 0) {
609 std::lconv* lc = std::localeconv();
610 if (strchr (lc->decimal_point, ',') != 0) {
611 comma_decimal = 1;
612 } else {
613 comma_decimal = 0;
614 }
615 }
616 break;
617 default:
618 break;
619 }
620
621 switch (keyval) {
622 case GDK_decimalpoint:
623 case GDK_KP_Separator:
624 return true;
625
626 case GDK_period:
627 if (comma_decimal) {
628 return false;
629 } else {
630 return true;
631 }
632 break;
633 case GDK_comma:
634 if (comma_decimal) {
635 return true;
636 } else {
637 return false;
638 }
639 break;
640 case GDK_minus:
641 case GDK_plus:
642 case GDK_0:
643 case GDK_1:
644 case GDK_2:
645 case GDK_3:
646 case GDK_4:
647 case GDK_5:
648 case GDK_6:
649 case GDK_7:
650 case GDK_8:
651 case GDK_9:
652 case GDK_KP_Add:
653 case GDK_KP_Subtract:
654 case GDK_KP_Decimal:
655 case GDK_KP_0:
656 case GDK_KP_1:
657 case GDK_KP_2:
658 case GDK_KP_3:
659 case GDK_KP_4:
660 case GDK_KP_5:
661 case GDK_KP_6:
662 case GDK_KP_7:
663 case GDK_KP_8:
664 case GDK_KP_9:
665 case GDK_Return:
666 case GDK_BackSpace:
667 case GDK_Delete:
668 case GDK_KP_Enter:
669 case GDK_Home:
670 case GDK_End:
671 case GDK_Left:
672 case GDK_Right:
673 return true;
674
675 default:
676 break;
677 }
678
679 return false;
680 }
681
682 void
resize_window_to_proportion_of_monitor(Gtk::Window * window,int max_width,int max_height)683 ARDOUR_UI_UTILS::resize_window_to_proportion_of_monitor (Gtk::Window* window, int max_width, int max_height)
684 {
685 Glib::RefPtr<Gdk::Screen> screen = window->get_screen ();
686 Gdk::Rectangle monitor_rect;
687 screen->get_monitor_geometry (0, monitor_rect);
688
689 int const w = std::min (int (monitor_rect.get_width() * 0.8), max_width);
690 int const h = std::min (int (monitor_rect.get_height() * 0.8), max_height);
691
692 window->resize (w, h);
693 }
694
695
696 /** Replace _ with __ in a string; for use with menu item text to make underscores displayed correctly */
697 string
escape_underscores(string const & s)698 ARDOUR_UI_UTILS::escape_underscores (string const & s)
699 {
700 string o;
701 string::size_type const N = s.length ();
702
703 for (string::size_type i = 0; i < N; ++i) {
704 if (s[i] == '_') {
705 o += "__";
706 } else {
707 o += s[i];
708 }
709 }
710
711 return o;
712 }
713
714 Gdk::Color
unique_random_color(list<Gdk::Color> & used_colors)715 ARDOUR_UI_UTILS::unique_random_color (list<Gdk::Color>& used_colors)
716 {
717 Gdk::Color newcolor;
718
719 while (1) {
720
721 double h, s, v;
722
723 h = fmod (random(), 360.0);
724 s = (random() % 65535) / 65535.0;
725 v = (random() % 65535) / 65535.0;
726
727 s = min (0.5, s); /* not too saturated */
728 v = max (0.9, v); /* not too bright */
729 newcolor.set_hsv (h, s, v);
730
731 if (used_colors.size() == 0) {
732 used_colors.push_back (newcolor);
733 return newcolor;
734 }
735
736 for (list<Gdk::Color>::iterator i = used_colors.begin(); i != used_colors.end(); ++i) {
737 Gdk::Color c = *i;
738 float rdelta, bdelta, gdelta;
739
740 rdelta = newcolor.get_red() - c.get_red();
741 bdelta = newcolor.get_blue() - c.get_blue();
742 gdelta = newcolor.get_green() - c.get_green();
743
744 if (sqrt (rdelta*rdelta + bdelta*bdelta + gdelta*gdelta) > 25.0) {
745 /* different enough */
746 used_colors.push_back (newcolor);
747 return newcolor;
748 }
749 }
750
751 /* XXX need throttle here to make sure we don't spin for ever */
752 }
753 }
754
755 string
rate_as_string(float r)756 ARDOUR_UI_UTILS::rate_as_string (float r)
757 {
758 char buf[32];
759 if (fmod (r, 1000.0f)) {
760 snprintf (buf, sizeof (buf), "%.1f kHz", r/1000.0);
761 } else {
762 snprintf (buf, sizeof (buf), "%.0f kHz", r/1000.0);
763 }
764 return buf;
765 }
766
767 string
samples_as_time_string(samplecnt_t s,float rate,bool show_samples)768 ARDOUR_UI_UTILS::samples_as_time_string (samplecnt_t s, float rate, bool show_samples)
769 {
770 char buf[32];
771 if (rate <= 0) {
772 snprintf (buf, sizeof (buf), "--");
773 } else if (s == 0) {
774 snprintf (buf, sizeof (buf), "0");
775 } else if (s < 1000 && show_samples) {
776 /* 0 .. 999 spl */
777 snprintf (buf, sizeof (buf), "%" PRId64" spl", s);
778 } else if (s < (rate / 1000.f)) {
779 /* 0 .. 999 usec */
780 snprintf (buf, sizeof (buf), "%.0f \u00B5s", s * 1e+6f / rate);
781 } else if (s < (rate / 100.f)) {
782 /* 1.000 .. 9.999 ms */
783 snprintf (buf, sizeof (buf), "%.3f ms", s * 1e+3f / rate);
784 } else if (s < (rate / 10.f)) {
785 /* 1.00 .. 99.99 ms */
786 snprintf (buf, sizeof (buf), "%.2f ms", s * 1e+3f / rate);
787 } else if (s < rate) {
788 /* 100.0 .. 999.9 ms */
789 snprintf (buf, sizeof (buf), "%.1f ms", s * 1e+3f / rate);
790 } else if (s < rate * 10.f) {
791 /* 1.000 s .. 9.999 s */
792 snprintf (buf, sizeof (buf), "%.3f s", s / rate);
793 } else if (s < rate * 90.f) {
794 /* 10.00 s .. 89.99 s */
795 snprintf (buf, sizeof (buf), "%.2f s", s / rate);
796 } else {
797 /* 1m30.0 ... */
798 snprintf (buf, sizeof (buf), "'%.0fm%.1f", s / (60.f * rate), fmodf (s / rate, 60));
799 }
800 buf[31] = '\0';
801 return buf;
802 }
803
804 bool
windows_overlap(Gtk::Window * a,Gtk::Window * b)805 ARDOUR_UI_UTILS::windows_overlap (Gtk::Window *a, Gtk::Window *b)
806 {
807
808 if (!a || !b) {
809 return false;
810 }
811 if (a->get_screen() == b->get_screen()) {
812 gint ex, ey, ew, eh;
813 gint mx, my, mw, mh;
814
815 a->get_position (ex, ey);
816 a->get_size (ew, eh);
817 b->get_position (mx, my);
818 b->get_size (mw, mh);
819
820 GdkRectangle e;
821 GdkRectangle m;
822 GdkRectangle r;
823
824 e.x = ex;
825 e.y = ey;
826 e.width = ew;
827 e.height = eh;
828
829 m.x = mx;
830 m.y = my;
831 m.width = mw;
832 m.height = mh;
833
834 if (gdk_rectangle_intersect (&e, &m, &r)) {
835 return true;
836 }
837 }
838 return false;
839 }
840
841 bool
overwrite_file_dialog(Gtk::Window & parent,string title,string text)842 ARDOUR_UI_UTILS::overwrite_file_dialog (Gtk::Window& parent, string title, string text)
843 {
844 ArdourDialog dialog (parent, title, true);
845 Label label (text);
846
847 dialog.get_vbox()->pack_start (label, true, true);
848 dialog.add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
849 dialog.add_button (_("Overwrite"), Gtk::RESPONSE_ACCEPT);
850 dialog.show_all ();
851
852 switch (dialog.run()) {
853 case RESPONSE_ACCEPT:
854 return true;
855 default:
856 return false;
857 }
858 }
859
860 bool
running_from_source_tree()861 ARDOUR_UI_UTILS::running_from_source_tree ()
862 {
863 gchar const *x = g_getenv ("ARDOUR_THEMES_PATH");
864 return x && (string (x).find ("gtk2_ardour") != string::npos);
865 }
866
867 Gtk::Menu*
shared_popup_menu()868 ARDOUR_UI_UTILS::shared_popup_menu ()
869 {
870 return ARDOUR_UI::instance()->shared_popup_menu ();
871 }
872