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Carla
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Carla/source/carla_shared.py

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  1. #!/usr/bin/env python3

  2. # -*- coding: utf-8 -*-

  3. 

  4. # Common Carla code

  5. # Copyright (C) 2011-2013 Filipe Coelho <falktx@falktx.com>

  6. #

  7. # This program is free software; you can redistribute it and/or

  8. # modify it under the terms of the GNU General Public License as

  9. # published by the Free Software Foundation; either version 2 of

  10. # the License, or any later version.

  11. #

  12. # This program is distributed in the hope that it will be useful,

  13. # but WITHOUT ANY WARRANTY; without even the implied warranty of

  14. # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

  15. # GNU General Public License for more details.

  16. #

  17. # For a full copy of the GNU General Public License see the doc/GPL.txt file.

  18. 

  19. # ------------------------------------------------------------------------------------------------------------

  20. # Imports (Global)

  21. 

  22. import os

  23. import sys

  24. 

  25. try:

  26.     from PyQt5.QtCore import pyqtSignal, pyqtSlot, qCritical, qFatal, qWarning

  27.     from PyQt5.QtGui import QIcon

  28.     from PyQt5.QtWidgets import QFileDialog, QMessageBox

  29. except:

  30.     from PyQt4.QtCore import pyqtSignal, pyqtSlot, qCritical, qFatal, qWarning

  31.     from PyQt4.QtGui import QIcon

  32.     from PyQt4.QtGui import QFileDialog, QMessageBox

  33. 

  34. # ------------------------------------------------------------------------------------------------------------

  35. # Import Signal

  36. 

  37. from signal import signal, SIGINT, SIGTERM

  38. 

  39. try:

  40.     from signal import SIGUSR1

  41.     haveSIGUSR1 = True

  42. except:

  43.     haveSIGUSR1 = False

  44. 

  45. # ------------------------------------------------------------------------------------------------------------

  46. # Imports (Custom)

  47. 

  48. from carla_backend import *

  49. 

  50. # ------------------------------------------------------------------------------------------------------------

  51. # Platform specific stuff

  52. 

  53. if MACOS:

  54.     from PyQt5.QtGui import qt_mac_set_menubar_icons

  55.     qt_mac_set_menubar_icons(False)

  56. elif WINDOWS:

  57.     WINDIR = os.getenv("WINDIR")

  58. 

  59. # ------------------------------------------------------------------------------------------------------------

  60. # Set Version

  61. 

  62. VERSION = "1.9.0"

  63. 

  64. # ------------------------------------------------------------------------------------------------------------

  65. # Set TMP

  66. 

  67. TMP = os.getenv("TMP")

  68. 

  69. if TMP is None:

  70.     if WINDOWS:

  71.         qWarning("TMP variable not set")

  72.         TMP = os.path.join(WINDIR, "temp")

  73.     else:

  74.         TMP = "/tmp"

  75. 

  76. elif not os.path.exists(TMP):

  77.     qWarning("TMP does not exist")

  78.     TMP = "/tmp"

  79. 

  80. # ------------------------------------------------------------------------------------------------------------

  81. # Set HOME

  82. 

  83. HOME = os.getenv("HOME")

  84. 

  85. if HOME is None:

  86.     HOME = os.path.expanduser("~")

  87. 

  88.     if LINUX or MACOS:

  89.         qWarning("HOME variable not set")

  90. 

  91. if not os.path.exists(HOME):

  92.     qWarning("HOME does not exist")

  93.     HOME = TMP

  94. 

  95. # ------------------------------------------------------------------------------------------------------------

  96. # Set PATH

  97. 

  98. PATH = os.getenv("PATH")

  99. 

  100. if PATH is None:

  101.     qWarning("PATH variable not set")

  102. 

  103.     if MACOS:

  104.         PATH = ("/opt/local/bin", "/usr/local/bin", "/usr/bin", "/bin")

  105.     elif WINDOWS:

  106.         PATH = (os.path.join(WINDIR, "system32"), WINDIR)

  107.     else:

  108.         PATH = ("/usr/local/bin", "/usr/bin", "/bin")

  109. 

  110. else:

  111.     PATH = PATH.split(os.pathsep)

  112. 

  113. # ------------------------------------------------------------------------------------------------------------

  114. # Static MIDI CC list

  115. 

  116. MIDI_CC_LIST = (

  117.     "0x01 Modulation",

  118.     "0x02 Breath",

  119.     "0x03 (Undefined)",

  120.     "0x04 Foot",

  121.     "0x05 Portamento",

  122.     "0x07 Volume",

  123.     "0x08 Balance",

  124.     "0x09 (Undefined)",

  125.     "0x0A Pan",

  126.     "0x0B Expression",

  127.     "0x0C FX Control 1",

  128.     "0x0D FX Control 2",

  129.     "0x0E (Undefined)",

  130.     "0x0F (Undefined)",

  131.     "0x10 General Purpose 1",

  132.     "0x11 General Purpose 2",

  133.     "0x12 General Purpose 3",

  134.     "0x13 General Purpose 4",

  135.     "0x14 (Undefined)",

  136.     "0x15 (Undefined)",

  137.     "0x16 (Undefined)",

  138.     "0x17 (Undefined)",

  139.     "0x18 (Undefined)",

  140.     "0x19 (Undefined)",

  141.     "0x1A (Undefined)",

  142.     "0x1B (Undefined)",

  143.     "0x1C (Undefined)",

  144.     "0x1D (Undefined)",

  145.     "0x1E (Undefined)",

  146.     "0x1F (Undefined)",

  147.     "0x46 Control 1 [Variation]",

  148.     "0x47 Control 2 [Timbre]",

  149.     "0x48 Control 3 [Release]",

  150.     "0x49 Control 4 [Attack]",

  151.     "0x4A Control 5 [Brightness]",

  152.     "0x4B Control 6 [Decay]",

  153.     "0x4C Control 7 [Vib Rate]",

  154.     "0x4D Control 8 [Vib Depth]",

  155.     "0x4E Control 9 [Vib Delay]",

  156.     "0x4F Control 10 [Undefined]",

  157.     "0x50 General Purpose 5",

  158.     "0x51 General Purpose 6",

  159.     "0x52 General Purpose 7",

  160.     "0x53 General Purpose 8",

  161.     "0x54 Portamento Control",

  162.     "0x5B FX 1 Depth [Reverb]",

  163.     "0x5C FX 2 Depth [Tremolo]",

  164.     "0x5D FX 3 Depth [Chorus]",

  165.     "0x5E FX 4 Depth [Detune]",

  166.     "0x5F FX 5 Depth [Phaser]"

  167.   )

  168. 

  169. # ------------------------------------------------------------------------------------------------------------

  170. # Default Plugin Folders (get)

  171. 

  172. if WINDOWS:

  173.     splitter = ";"

  174.     APPDATA = os.getenv("APPDATA")

  175.     PROGRAMFILES = os.getenv("PROGRAMFILES")

  176.     PROGRAMFILESx86 = os.getenv("PROGRAMFILES(x86)")

  177.     COMMONPROGRAMFILES = os.getenv("COMMONPROGRAMFILES")

  178. 

  179.     # Small integrity tests

  180.     if not APPDATA:

  181.         qFatal("APPDATA variable not set, cannot continue")

  182.         sys.exit(1)

  183. 

  184.     if not PROGRAMFILES:

  185.         qFatal("PROGRAMFILES variable not set, cannot continue")

  186.         sys.exit(1)

  187. 

  188.     if not COMMONPROGRAMFILES:

  189.         qFatal("COMMONPROGRAMFILES variable not set, cannot continue")

  190.         sys.exit(1)

  191. 

  192.     DEFAULT_LADSPA_PATH = ";".join((os.path.join(APPDATA, "LADSPA"),

  193.                                     os.path.join(PROGRAMFILES, "LADSPA")))

  194. 

  195.     DEFAULT_DSSI_PATH   = ";".join((os.path.join(APPDATA, "DSSI"),

  196.                                     os.path.join(PROGRAMFILES, "DSSI")))

  197. 

  198.     DEFAULT_LV2_PATH    = ";".join((os.path.join(APPDATA, "LV2"),

  199.                                     os.path.join(COMMONPROGRAMFILES, "LV2")))

  200. 

  201.     DEFAULT_VST_PATH    = ";".join((os.path.join(PROGRAMFILES, "VstPlugins"),

  202.                                     os.path.join(PROGRAMFILES, "Steinberg", "VstPlugins")))

  203. 

  204.     DEFAULT_AU_PATH     = ""

  205. 

  206.     # TODO

  207.     DEFAULT_CSOUND_PATH = ""

  208. 

  209.     DEFAULT_GIG_PATH    = ";".join((os.path.join(APPDATA, "GIG"),))

  210.     DEFAULT_SF2_PATH    = ";".join((os.path.join(APPDATA, "SF2"),))

  211.     DEFAULT_SFZ_PATH    = ";".join((os.path.join(APPDATA, "SFZ"),))

  212. 

  213.     if PROGRAMFILESx86:

  214.         DEFAULT_LADSPA_PATH += ";"+os.path.join(PROGRAMFILESx86, "LADSPA")

  215.         DEFAULT_DSSI_PATH   += ";"+os.path.join(PROGRAMFILESx86, "DSSI")

  216.         DEFAULT_VST_PATH    += ";"+os.path.join(PROGRAMFILESx86, "VstPlugins")

  217.         DEFAULT_VST_PATH    += ";"+os.path.join(PROGRAMFILESx86, "Steinberg", "VstPlugins")

  218. 

  219. elif HAIKU:

  220.     splitter = ":"

  221. 

  222.     DEFAULT_LADSPA_PATH = ":".join((os.path.join(HOME, ".ladspa"),

  223.                                     os.path.join("/", "boot", "common", "add-ons", "ladspa")))

  224. 

  225.     DEFAULT_DSSI_PATH   = ":".join((os.path.join(HOME, ".dssi"),

  226.                                     os.path.join("/", "boot", "common", "add-ons", "dssi")))

  227. 

  228.     DEFAULT_LV2_PATH    = ":".join((os.path.join(HOME, ".lv2"),

  229.                                     os.path.join("/", "boot", "common", "add-ons", "lv2")))

  230. 

  231.     DEFAULT_VST_PATH    = ":".join((os.path.join(HOME, ".vst"),

  232.                                     os.path.join("/", "boot", "common", "add-ons", "vst")))

  233. 

  234.     DEFAULT_AU_PATH     = ""

  235. 

  236.     # TODO

  237.     DEFAULT_CSOUND_PATH = ""

  238. 

  239.     # TODO

  240.     DEFAULT_GIG_PATH    = ""

  241.     DEFAULT_SF2_PATH    = ""

  242.     DEFAULT_SFZ_PATH    = ""

  243. 

  244. elif MACOS:

  245.     splitter = ":"

  246. 

  247.     DEFAULT_LADSPA_PATH = ":".join((os.path.join(HOME, "Library", "Audio", "Plug-Ins", "LADSPA"),

  248.                                     os.path.join("/", "Library", "Audio", "Plug-Ins", "LADSPA")))

  249. 

  250.     DEFAULT_DSSI_PATH   = ":".join((os.path.join(HOME, "Library", "Audio", "Plug-Ins", "DSSI"),

  251.                                     os.path.join("/", "Library", "Audio", "Plug-Ins", "DSSI")))

  252. 

  253.     DEFAULT_LV2_PATH    = ":".join((os.path.join(HOME, "Library", "Audio", "Plug-Ins", "LV2"),

  254.                                     os.path.join("/", "Library", "Audio", "Plug-Ins", "LV2")))

  255. 

  256.     DEFAULT_VST_PATH    = ":".join((os.path.join(HOME, "Library", "Audio", "Plug-Ins", "VST"),

  257.                                     os.path.join("/", "Library", "Audio", "Plug-Ins", "VST")))

  258. 

  259.     DEFAULT_AU_PATH     = ":".join((os.path.join(HOME, "Library", "Audio", "Plug-Ins", "Components"),

  260.                                     os.path.join("/", "Library", "Audio", "Plug-Ins", "Components")))

  261. 

  262.     # TODO

  263.     DEFAULT_CSOUND_PATH = ""

  264. 

  265.     # TODO

  266.     DEFAULT_GIG_PATH    = ""

  267.     DEFAULT_SF2_PATH    = ""

  268.     DEFAULT_SFZ_PATH    = ""

  269. 

  270. else:

  271.     splitter = ":"

  272. 

  273.     DEFAULT_LADSPA_PATH = ":".join((os.path.join(HOME, ".ladspa"),

  274.                                     os.path.join("/", "usr", "lib", "ladspa"),

  275.                                     os.path.join("/", "usr", "local", "lib", "ladspa")))

  276. 

  277.     DEFAULT_DSSI_PATH   = ":".join((os.path.join(HOME, ".dssi"),

  278.                                     os.path.join("/", "usr", "lib", "dssi"),

  279.                                     os.path.join("/", "usr", "local", "lib", "dssi")))

  280. 

  281.     DEFAULT_LV2_PATH    = ":".join((os.path.join(HOME, ".lv2"),

  282.                                     os.path.join("/", "usr", "lib", "lv2"),

  283.                                     os.path.join("/", "usr", "local", "lib", "lv2")))

  284. 

  285.     DEFAULT_VST_PATH    = ":".join((os.path.join(HOME, ".vst"),

  286.                                     os.path.join("/", "usr", "lib", "vst"),

  287.                                     os.path.join("/", "usr", "local", "lib", "vst")))

  288. 

  289.     DEFAULT_AU_PATH     = ""

  290. 

  291.     # TODO

  292.     DEFAULT_CSOUND_PATH = ""

  293. 

  294.     DEFAULT_GIG_PATH    = ":".join((os.path.join(HOME, ".sounds", "gig"),

  295.                                     os.path.join("/", "usr", "share", "sounds", "gig")))

  296. 

  297.     DEFAULT_SF2_PATH    = ":".join((os.path.join(HOME, ".sounds", "sf2"),

  298.                                     os.path.join("/", "usr", "share", "sounds", "sf2")))

  299. 

  300.     DEFAULT_SFZ_PATH    = ":".join((os.path.join(HOME, ".sounds", "sfz"),

  301.                                     os.path.join("/", "usr", "share", "sounds", "sfz")))

  302. 

  303. # ------------------------------------------------------------------------------------------------------------

  304. # Global Carla object

  305. 

  306. class CarlaObject(object):

  307.     __slots__ = [

  308.         'host',

  309.         'gui',

  310.         'isControl',

  311.         'isLocal',

  312.         'processMode',

  313.         'maxParameters',

  314.         'DEFAULT_LADSPA_PATH',

  315.         'DEFAULT_DSSI_PATH',

  316.         'DEFAULT_LV2_PATH',

  317.         'DEFAULT_VST_PATH',

  318.         'DEFAULT_AU_PATH',

  319.         'DEFAULT_CSOUND_PATH',

  320.         'DEFAULT_GIG_PATH',

  321.         'DEFAULT_SF2_PATH',

  322.         'DEFAULT_SFZ_PATH'

  323.     ]

  324. 

  325. Carla = CarlaObject()

  326. Carla.host = None

  327. Carla.gui  = None

  328. Carla.isControl = False

  329. Carla.isLocal   = False

  330. Carla.processMode   = PROCESS_MODE_MULTIPLE_CLIENTS if LINUX else PROCESS_MODE_CONTINUOUS_RACK

  331. Carla.maxParameters = MAX_DEFAULT_PARAMETERS

  332. 

  333. # ------------------------------------------------------------------------------------------------------------

  334. # Default Plugin Folders (set)

  335. 

  336. readEnvVars = True

  337. 

  338. if WINDOWS:

  339.     # Check if running Wine. If yes, ignore env vars

  340.     from winreg import ConnectRegistry, OpenKey, CloseKey, HKEY_CURRENT_USER

  341.     reg = ConnectRegistry(None, HKEY_CURRENT_USER)

  342. 

  343.     try:

  344.         key = OpenKey(reg, r"SOFTWARE\Wine")

  345.         CloseKey(key)

  346.         readEnvVars = False

  347.     except:

  348.         pass

  349. 

  350.     CloseKey(reg)

  351.     del reg

  352. 

  353. if readEnvVars:

  354.     Carla.DEFAULT_LADSPA_PATH = os.getenv("LADSPA_PATH", DEFAULT_LADSPA_PATH).split(splitter)

  355.     Carla.DEFAULT_DSSI_PATH   = os.getenv("DSSI_PATH",   DEFAULT_DSSI_PATH).split(splitter)

  356.     Carla.DEFAULT_LV2_PATH    = os.getenv("LV2_PATH",    DEFAULT_LV2_PATH).split(splitter)

  357.     Carla.DEFAULT_VST_PATH    = os.getenv("VST_PATH",    DEFAULT_VST_PATH).split(splitter)

  358.     Carla.DEFAULT_AU_PATH     = os.getenv("AU_PATH",     DEFAULT_AU_PATH).split(splitter)

  359.     Carla.DEFAULT_CSOUND_PATH = os.getenv("CSOUND_PATH", DEFAULT_CSOUND_PATH).split(splitter)

  360.     Carla.DEFAULT_GIG_PATH    = os.getenv("GIG_PATH",    DEFAULT_GIG_PATH).split(splitter)

  361.     Carla.DEFAULT_SF2_PATH    = os.getenv("SF2_PATH",    DEFAULT_SF2_PATH).split(splitter)

  362.     Carla.DEFAULT_SFZ_PATH    = os.getenv("SFZ_PATH",    DEFAULT_SFZ_PATH).split(splitter)

  363. 

  364. else:

  365.     Carla.DEFAULT_LADSPA_PATH = DEFAULT_LADSPA_PATH.split(splitter)

  366.     Carla.DEFAULT_DSSI_PATH   = DEFAULT_DSSI_PATH.split(splitter)

  367.     Carla.DEFAULT_LV2_PATH    = DEFAULT_LV2_PATH.split(splitter)

  368.     Carla.DEFAULT_VST_PATH    = DEFAULT_VST_PATH.split(splitter)

  369.     Carla.DEFAULT_AU_PATH     = DEFAULT_AU_PATH.split(splitter)

  370.     Carla.DEFAULT_CSOUND_PATH = DEFAULT_CSOUND_PATH.split(splitter)

  371.     Carla.DEFAULT_GIG_PATH    = DEFAULT_GIG_PATH.split(splitter)

  372.     Carla.DEFAULT_SF2_PATH    = DEFAULT_SF2_PATH.split(splitter)

  373.     Carla.DEFAULT_SFZ_PATH    = DEFAULT_SFZ_PATH.split(splitter)

  374. 

  375. # ------------------------------------------------------------------------------------------------------------

  376. # Search for Carla library and tools

  377. 

  378. carla_library_filename  = ""

  379. 

  380. carla_discovery_native  = ""

  381. carla_discovery_posix32 = ""

  382. carla_discovery_posix64 = ""

  383. carla_discovery_win32   = ""

  384. carla_discovery_win64   = ""

  385. 

  386. carla_bridge_native  = ""

  387. carla_bridge_posix32 = ""

  388. carla_bridge_posix64 = ""

  389. carla_bridge_win32   = ""

  390. carla_bridge_win64   = ""

  391. 

  392. carla_bridge_lv2_external = ""

  393. carla_bridge_lv2_gtk2     = ""

  394. carla_bridge_lv2_gtk3     = ""

  395. carla_bridge_lv2_qt4      = ""

  396. carla_bridge_lv2_qt5      = ""

  397. carla_bridge_lv2_cocoa    = ""

  398. carla_bridge_lv2_windows  = ""

  399. carla_bridge_lv2_x11      = ""

  400. 

  401. carla_bridge_vst_mac  = ""

  402. carla_bridge_vst_hwnd = ""

  403. carla_bridge_vst_x11  = ""

  404. 

  405. carla_libname = "libcarla_%s" % "control" if Carla.isControl else "standalone"

  406. 

  407. if WINDOWS:

  408.     carla_libname += ".dll"

  409. elif MACOS:

  410.     carla_libname += ".dylib"

  411. else:

  412.     carla_libname += ".so"

  413. 

  414. CWD = sys.path[0]

  415. 

  416. # make it work with cxfreeze

  417. if CWD.endswith("/carla"):

  418.     CWD = CWD.rsplit("/carla", 1)[0]

  419. elif CWD.endswith("\\carla.exe"):

  420.     CWD = CWD.rsplit("\\carla.exe", 1)[0]

  421. 

  422. # find carla_library_filename

  423. if os.path.exists(os.path.join(CWD, "backend", carla_libname)):

  424.     carla_library_filename = os.path.join(CWD, "backend", carla_libname)

  425. else:

  426.     if WINDOWS:

  427.         CARLA_PATH = (os.path.join(PROGRAMFILES, "Carla"),)

  428.     elif MACOS:

  429.         CARLA_PATH = ("/opt/local/lib", "/usr/local/lib/", "/usr/lib")

  430.     else:

  431.         CARLA_PATH = ("/usr/local/lib/", "/usr/lib")

  432. 

  433.     for path in CARLA_PATH:

  434.         if os.path.exists(os.path.join(path, "carla", carla_libname)):

  435.             carla_library_filename = os.path.join(path, "carla", carla_libname)

  436.             break

  437. 

  438.     del CARLA_PATH

  439. 

  440. # find tool

  441. def findTool(toolDir, toolName):

  442.     if os.path.exists(os.path.join(CWD, toolDir, toolName)):

  443.         return os.path.join(CWD, toolDir, toolName)

  444. 

  445.     for p in PATH:

  446.         if os.path.exists(os.path.join(p, toolName)):

  447.             return os.path.join(p, toolName)

  448. 

  449.     return ""

  450. 

  451. # find windows tools

  452. carla_discovery_win32 = findTool("discovery", "carla-discovery-win32.exe")

  453. carla_discovery_win64 = findTool("discovery", "carla-discovery-win64.exe")

  454. carla_bridge_win32    = findTool("bridges", "carla-bridge-win32.exe")

  455. carla_bridge_win64    = findTool("bridges", "carla-bridge-win64.exe")

  456. 

  457. # find native and posix tools

  458. if not WINDOWS:

  459.     carla_discovery_native  = findTool("discovery", "carla-discovery-native")

  460.     carla_discovery_posix32 = findTool("discovery", "carla-discovery-posix32")

  461.     carla_discovery_posix64 = findTool("discovery", "carla-discovery-posix64")

  462.     carla_bridge_native     = findTool("bridges", "carla-bridge-native")

  463.     carla_bridge_posix32    = findTool("bridges", "carla-bridge-posix32")

  464.     carla_bridge_posix64    = findTool("bridges", "carla-bridge-posix64")

  465. 

  466. # find generic tools

  467. carla_bridge_lv2_external = findTool("bridges", "carla-bridge-lv2-external")

  468. 

  469. # find windows only tools

  470. if WINDOWS:

  471.     carla_bridge_lv2_windows = findTool("bridges", "carla-bridge-lv2-windows.exe")

  472.     carla_bridge_vst_hwnd    = findTool("bridges", "carla-bridge-vst-hwnd.exe")

  473. 

  474. # find mac os only tools

  475. elif MACOS:

  476.     carla_bridge_lv2_cocoa = findTool("bridges", "carla-bridge-lv2-cocoa")

  477.     carla_bridge_vst_mac   = findTool("bridges", "carla-bridge-vst-mac")

  478. 

  479. # find other tools

  480. else:

  481.     carla_bridge_lv2_gtk2 = findTool("bridges", "carla-bridge-lv2-gtk2")

  482.     carla_bridge_lv2_gtk3 = findTool("bridges", "carla-bridge-lv2-gtk3")

  483.     carla_bridge_lv2_qt4  = findTool("bridges", "carla-bridge-lv2-qt4")

  484.     carla_bridge_lv2_qt5  = findTool("bridges", "carla-bridge-lv2-qt5")

  485.     carla_bridge_lv2_x11  = findTool("bridges", "carla-bridge-lv2-x11")

  486.     carla_bridge_vst_x11  = findTool("bridges", "carla-bridge-vst-x11")

  487. 

  488. # ------------------------------------------------------------------------------------------------------------

  489. # Convert a ctypes c_char_p into a python string

  490. 

  491. def cString(value):

  492.     if not value:

  493.         return ""

  494.     if isinstance(value, str):

  495.         return value

  496.     return value.decode("utf-8", errors="ignore")

  497. 

  498. # ------------------------------------------------------------------------------------------------------------

  499. # Check if a value is a number (float support)

  500. 

  501. def isNumber(value):

  502.     try:

  503.         float(value)

  504.         return True

  505.     except:

  506.         return False

  507. 

  508. # ------------------------------------------------------------------------------------------------------------

  509. # Convert a value to a list

  510. 

  511. def toList(value):

  512.     if value is None:

  513.         return []

  514.     elif not isinstance(value, list):

  515.         return [value]

  516.     else:

  517.         return value

  518. 

  519. # ------------------------------------------------------------------------------------------------------------

  520. # Get Icon from user theme, using our own as backup (Oxygen)

  521. 

  522. def getIcon(icon, size=16):

  523.     return QIcon.fromTheme(icon, QIcon(":/%ix%i/%s.png" % (size, size, icon)))

  524. 

  525. # ------------------------------------------------------------------------------------------------------------

  526. # Signal handler

  527. 

  528. def signalHandler(sig, frame):

  529.     if Carla.gui is None:

  530.         return

  531. 

  532.     if sig in (SIGINT, SIGTERM):

  533.         Carla.gui.SIGTERM.emit()

  534.     elif haveSIGUSR1 and sig == SIGUSR1:

  535.         Carla.gui.SIGUSR1.emit()

  536. 

  537. def setUpSignals():

  538.     signal(SIGINT,  signalHandler)

  539.     signal(SIGTERM, signalHandler)

  540. 

  541.     if not haveSIGUSR1:

  542.         return

  543. 

  544.     signal(SIGUSR1, signalHandler)

  545. 

  546. # ------------------------------------------------------------------------------------------------------------

  547. # QLineEdit and QPushButton combo

  548. 

  549. def getAndSetPath(self_, currentPath, lineEdit):

  550.     newPath = QFileDialog.getExistingDirectory(self_, self_.tr("Set Path"), currentPath, QFileDialog.ShowDirsOnly)

  551.     if newPath:

  552.         lineEdit.setText(newPath)

  553.     return newPath

  554. 

  555. # ------------------------------------------------------------------------------------------------------------

  556. # Custom MessageBox

  557. 

  558. def CustomMessageBox(self_, icon, title, text, extraText="", buttons=QMessageBox.Yes|QMessageBox.No, defButton=QMessageBox.No):

  559.     msgBox = QMessageBox(self_)

  560.     msgBox.setIcon(icon)

  561.     msgBox.setWindowTitle(title)

  562.     msgBox.setText(text)

  563.     msgBox.setInformativeText(extraText)

  564.     msgBox.setStandardButtons(buttons)

  565.     msgBox.setDefaultButton(defButton)

  566.     return msgBox.exec_()