More pylint corrections

Signed-off-by: falkTX <falktx@falktx.com>

.travis/script-pylint.sh

@@ -15,13 +15,19 @@ fi
 # widget code, check all errors
 ${pylint} \
     --extension-pkg-whitelist=PyQt5 \
+    --max-attributes=25 \
+    --max-line-length=120 \
+    --max-locals=25 \
     --disable=\
-bad-whitespace \
+bad-whitespace,\
+invalid-name,\
+missing-docstring \
     source/frontend/widgets/canvaspreviewframe.py
 
 # main app code, ignore some errors
 ${pylint} \
     --extension-pkg-whitelist=PyQt5 \
+    --max-line-length=120 \
     --disable=\
 bad-whitespace,\
 bare-except,\
@@ -29,7 +35,6 @@ blacklisted-name,\
 duplicate-code,\
 fixme,\
 invalid-name,\
-line-too-long,\
 missing-docstring,\
 too-few-public-methods,\
 too-many-arguments,\

source/frontend/carla_backend.py

@@ -16,7 +16,7 @@
 #
 # For a full copy of the GNU General Public License see the doc/GPL.txt file.
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Imports (Global)
 
 from abc import abstractmethod
@@ -24,7 +24,7 @@ from platform import architecture
 from struct import pack
 from sys import platform, maxsize
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Imports (ctypes)
 
 from ctypes import (
@@ -34,18 +34,18 @@ from ctypes import (
     CDLL, CFUNCTYPE, RTLD_GLOBAL, RTLD_LOCAL, POINTER
 )
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # 64bit check
 
 kIs64bit = bool(architecture()[0] == "64bit" and maxsize > 2**32)
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Define custom types
 
 c_enum = c_int
 c_uintptr = c_uint64 if kIs64bit else c_uint32
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Set Platform
 
 if platform == "darwin":
@@ -74,7 +74,7 @@ else:
     MACOS   = False
     WINDOWS = False
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Convert a ctypes c_char_p into a python string
 
 def charPtrToString(charPtr):
@@ -84,7 +84,7 @@ def charPtrToString(charPtr):
         return charPtr
     return charPtr.decode("utf-8", errors="ignore")
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Convert a ctypes POINTER(c_char_p) into a python string list
 
 def charPtrPtrToStringList(charPtrPtr):
@@ -103,7 +103,7 @@ def charPtrPtrToStringList(charPtrPtr):
 
     return strList
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Convert a ctypes POINTER(c_<num>) into a python number list
 
 def numPtrToList(numPtr):
@@ -122,10 +122,11 @@ def numPtrToList(numPtr):
 
     return numList
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Convert a ctypes value into a python one
 
-c_int_types    = (c_int, c_int8, c_int16, c_int32, c_int64, c_uint, c_uint8, c_uint16, c_uint32, c_uint64, c_long, c_longlong)
+c_int_types    = (c_int, c_int8, c_int16, c_int32, c_int64,
+                  c_uint, c_uint8, c_uint16, c_uint32, c_uint64, c_long, c_longlong)
 c_float_types  = (c_float, c_double, c_longdouble)
 c_intp_types   = tuple(POINTER(i) for i in c_int_types)
 c_floatp_types = tuple(POINTER(i) for i in c_float_types)
@@ -144,7 +145,7 @@ def toPythonType(value, attr):
     print("..............", attr, ".....................", value, ":", type(value))
     return value
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Convert a ctypes struct into a python dict
 
 def structToDict(struct):
@@ -152,7 +153,7 @@ def structToDict(struct):
     return dict((attr, toPythonType(getattr(struct, attr), attr)) for attr, value in struct._fields_)
     # pylint: enable=protected-access
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Carla Backend API (base definitions)
 
 # Maximum default number of loadable plugins.
@@ -172,7 +173,7 @@ MAX_DEFAULT_PARAMETERS = 200
 # Currently only used for audio peaks.
 MAIN_CARLA_PLUGIN_ID = 0xFFFF
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Engine Driver Device Hints
 # Various engine driver device hints.
 # @see carla_get_engine_driver_device_info()
@@ -192,7 +193,7 @@ ENGINE_DRIVER_DEVICE_VARIABLE_BUFFER_SIZE = 0x4
 # @see ENGINE_OPTION_AUDIO_SAMPLE_RATE
 ENGINE_DRIVER_DEVICE_VARIABLE_SAMPLE_RATE = 0x8
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Plugin Hints
 # Various plugin hints.
 # @see carla_get_plugin_info()
@@ -236,7 +237,7 @@ PLUGIN_USES_MULTI_PROGS = 0x400
 # Plugin can make use of inline display API.
 PLUGIN_HAS_INLINE_DISPLAY = 0x800
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Plugin Options
 # Various plugin options.
 # @see carla_get_plugin_info() and carla_set_option()
@@ -276,7 +277,7 @@ PLUGIN_OPTION_SEND_PROGRAM_CHANGES = 0x200
 # This flag exists because 0x0 as an option value is a valid one, so we need something else to indicate "null-ness".
 PLUGIN_OPTIONS_NULL = 0x10000
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Parameter Hints
 # Various parameter hints.
 # @see CarlaPlugin::getParameterData() and carla_get_parameter_data()
@@ -315,7 +316,7 @@ PARAMETER_USES_CUSTOM_TEXT = 0x400
 # Parameter can be turned into a CV control.
 PARAMETER_CAN_BE_CV_CONTROLLED = 0x800
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Patchbay Port Hints
 # Various patchbay port hints.
 
@@ -335,7 +336,7 @@ PATCHBAY_PORT_TYPE_MIDI = 0x08
 # Patchbay port is of OSC type.
 PATCHBAY_PORT_TYPE_OSC = 0x10
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Patchbay Port Group Hints
 # Various patchbay port group hints.
 
@@ -351,7 +352,7 @@ PATCHBAY_PORT_GROUP_STEREO = 0x04
 # A mid-side stereo group, where the 1st port is center and the 2nd is side.
 PATCHBAY_PORT_GROUP_MID_SIDE = 0x08
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Custom Data Types
 # These types define how the value in the CustomData struct is stored.
 # @see CustomData.type
@@ -369,7 +370,7 @@ CUSTOM_DATA_TYPE_PROPERTY = "http://kxstudio.sf.net/ns/carla/property"
 # String type URI.
 CUSTOM_DATA_TYPE_STRING = "http://kxstudio.sf.net/ns/carla/string"
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Custom Data Keys
 # Pre-defined keys used internally in Carla.
 # @see CustomData.key
@@ -386,7 +387,7 @@ CUSTOM_DATA_KEY_UI_SIZE = "CarlaUiSize"
 # UI visible key.
 CUSTOM_DATA_KEY_UI_VISIBLE = "CarlaUiVisible"
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Binary Type
 # The binary type of a plugin.
 
@@ -408,7 +409,7 @@ BINARY_WIN64 = 4
 # Other binary type.
 BINARY_OTHER = 5
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # File Type
 # File type.
 
@@ -421,7 +422,7 @@ FILE_AUDIO = 1
 # MIDI file.
 FILE_MIDI = 2
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Plugin Type
 # Plugin type.
 # Some files are handled as if they were plugins.
@@ -467,7 +468,7 @@ PLUGIN_SFZ = 11
 # JACK application.
 PLUGIN_JACK = 12
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Plugin Category
 # Plugin category, which describes the functionality of a plugin.
 
@@ -501,7 +502,7 @@ PLUGIN_CATEGORY_UTILITY = 8
 # Miscellaneous plugin (used to check if the plugin has a category).
 PLUGIN_CATEGORY_OTHER = 9
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Parameter Type
 # Plugin parameter type.
 
@@ -514,7 +515,7 @@ PARAMETER_INPUT = 1
 # Output parameter.
 PARAMETER_OUTPUT = 2
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Internal Parameter Index
 # Special parameters used internally in Carla.
 # Plugins do not know about their existence.
@@ -553,7 +554,7 @@ PARAMETER_CTRL_CHANNEL = -8
 # Max value, defined only for convenience.
 PARAMETER_MAX = -9
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Special Mapped Control Index
 
 # Specially designated mapped control indexes.
@@ -569,7 +570,7 @@ CONTROL_VALUE_CV = 130
 # Special value to indicate MIDI pitchbend.
 CONTROL_VALUE_MIDI_PITCHBEND = 131
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Engine Callback Opcode
 # Engine callback opcodes.
 # Front-ends must never block indefinitely during a callback.
@@ -840,7 +841,7 @@ ENGINE_CALLBACK_PARAMETER_MAPPED_RANGE_CHANGED = 46
 # @a valuef   Y position 2
 ENGINE_CALLBACK_PATCHBAY_CLIENT_POSITION_CHANGED = 47
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # NSM Callback Opcode
 # NSM callback opcodes.
 # @see ENGINE_CALLBACK_NSM
@@ -874,7 +875,7 @@ NSM_CALLBACK_SHOW_OPTIONAL_GUI = 6
 # Hide-optional-gui message.
 NSM_CALLBACK_HIDE_OPTIONAL_GUI = 7
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Engine Option
 # Engine options.
 # @see carla_set_engine_option()
@@ -1014,7 +1015,7 @@ ENGINE_OPTION_WINE_SERVER_RT_PRIO = 32
 # Capture console output into debug callbacks
 ENGINE_OPTION_DEBUG_CONSOLE_OUTPUT = 33
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Engine Process Mode
 # Engine process mode.
 # @see ENGINE_OPTION_PROCESS_MODE
@@ -1037,7 +1038,7 @@ ENGINE_PROCESS_MODE_PATCHBAY = 3
 # Special mode, used in plugin-bridges only.
 ENGINE_PROCESS_MODE_BRIDGE = 4
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Engine Transport Mode
 # Engine transport mode.
 # @see ENGINE_OPTION_TRANSPORT_MODE
@@ -1058,7 +1059,7 @@ ENGINE_TRANSPORT_MODE_PLUGIN = 3
 # Special mode, used in plugin-bridges only.
 ENGINE_TRANSPORT_MODE_BRIDGE = 4
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # File Callback Opcode
 # File callback opcodes.
 # Front-ends must always block-wait for user input.
@@ -1074,7 +1075,7 @@ FILE_CALLBACK_OPEN = 1
 # Save file or folder.
 FILE_CALLBACK_SAVE = 2
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Patchbay Icon
 # The icon of a patchbay client/group.
 
@@ -1102,7 +1103,7 @@ PATCHBAY_ICON_DISTRHO = 4
 # Used for file type plugins (like SF2 and SFZ).
 PATCHBAY_ICON_FILE = 5
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Carla Backend API (C stuff)
 
 # Engine callback function.
@@ -1211,7 +1212,7 @@ class EngineDriverDeviceInfo(Structure):
         ("sampleRates", POINTER(c_double))
     ]
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Carla Backend API (Python compatible stuff)
 
 # @see ParameterData
@@ -1257,7 +1258,7 @@ PyEngineDriverDeviceInfo = {
     'sampleRates': []
 }
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Carla Host API (C stuff)
 
 # Information about a loaded plugin.
@@ -1426,7 +1427,7 @@ class CarlaInlineDisplayImageSurface(Structure):
         ("stride", c_int)
     ]
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Carla Host API (Python compatible stuff)
 
 # @see CarlaPluginInfo
@@ -1493,7 +1494,7 @@ PyCarlaRuntimeEngineDriverDeviceInfo = {
     'sampleRates': []
 }
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Set BINARY_NATIVE
 
 if WINDOWS:
@@ -1501,7 +1502,7 @@ if WINDOWS:
 else:
     BINARY_NATIVE = BINARY_POSIX64 if kIs64bit else BINARY_POSIX32
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Carla Host object (Meta)
 
 class CarlaHostMeta():
@@ -2236,7 +2237,7 @@ class CarlaHostMeta():
     def nsm_ready(self, opcode):
         raise NotImplementedError
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Carla Host object (dummy/null, does nothing)
 
 class CarlaHostNull(CarlaHostMeta):
@@ -2565,7 +2566,7 @@ class CarlaHostNull(CarlaHostMeta):
     def nsm_ready(self, opcode):
         return
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Carla Host object using a DLL
 
 class CarlaHostDLL(CarlaHostMeta):
@@ -2685,7 +2686,8 @@ class CarlaHostDLL(CarlaHostMeta):
         self.lib.carla_get_max_plugin_number.argtypes = (c_void_p,)
         self.lib.carla_get_max_plugin_number.restype = c_uint32
 
-        self.lib.carla_add_plugin.argtypes = (c_void_p, c_enum, c_enum, c_char_p, c_char_p, c_char_p, c_int64, c_void_p, c_uint)
+        self.lib.carla_add_plugin.argtypes = (c_void_p, c_enum, c_enum, c_char_p, c_char_p, c_char_p, c_int64,
+                                              c_void_p, c_uint)
         self.lib.carla_add_plugin.restype = c_bool
 
         self.lib.carla_remove_plugin.argtypes = (c_void_p, c_uint)
@@ -3051,7 +3053,10 @@ class CarlaHostDLL(CarlaHostMeta):
         return structToDict(self.lib.carla_get_parameter_info(self.handle, pluginId, parameterId).contents)
 
     def get_parameter_scalepoint_info(self, pluginId, parameterId, scalePointId):
-        return structToDict(self.lib.carla_get_parameter_scalepoint_info(self.handle, pluginId, parameterId, scalePointId).contents)
+        return structToDict(self.lib.carla_get_parameter_scalepoint_info(self.handle,
+                                                                         pluginId,
+                                                                         parameterId,
+                                                                         scalePointId).contents)
 
     def get_parameter_data(self, pluginId, parameterId):
         return structToDict(self.lib.carla_get_parameter_data(self.handle, pluginId, parameterId).contents)
@@ -3066,7 +3071,10 @@ class CarlaHostDLL(CarlaHostMeta):
         return structToDict(self.lib.carla_get_custom_data(self.handle, pluginId, customDataId).contents)
 
     def get_custom_data_value(self, pluginId, type_, key):
-        return charPtrToString(self.lib.carla_get_custom_data_value(self.handle, pluginId, type_.encode("utf-8"), key.encode("utf-8")))
+        return charPtrToString(self.lib.carla_get_custom_data_value(self.handle,
+                                                                    pluginId,
+                                                                    type_.encode("utf-8"),
+                                                                    key.encode("utf-8")))
 
     def get_chunk_data(self, pluginId):
         return charPtrToString(self.lib.carla_get_chunk_data(self.handle, pluginId))
@@ -3177,7 +3185,11 @@ class CarlaHostDLL(CarlaHostMeta):
         self.lib.carla_set_midi_program(self.handle, pluginId, midiProgramId)
 
     def set_custom_data(self, pluginId, type_, key, value):
-        self.lib.carla_set_custom_data(self.handle, pluginId, type_.encode("utf-8"), key.encode("utf-8"), value.encode("utf-8"))
+        self.lib.carla_set_custom_data(self.handle,
+                                       pluginId,
+                                       type_.encode("utf-8"),
+                                       key.encode("utf-8"),
+                                       value.encode("utf-8"))
 
     def set_chunk_data(self, pluginId, chunkData):
         self.lib.carla_set_chunk_data(self.handle, pluginId, chunkData.encode("utf-8"))
@@ -3218,7 +3230,7 @@ class CarlaHostDLL(CarlaHostMeta):
     def nsm_ready(self, opcode):
         self.lib.carla_nsm_ready(self.handle, opcode)
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Helper object for CarlaHostPlugin
 
 class PluginStoreInfo():
@@ -3247,7 +3259,7 @@ class PluginStoreInfo():
         self.customData      = []
         self.peaks = [0.0, 0.0, 0.0, 0.0]
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Carla Host object for plugins (using pipes)
 
 class CarlaHostPlugin(CarlaHostMeta):
@@ -3956,4 +3968,4 @@ class CarlaHostPlugin(CarlaHostMeta):
         elif action == ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED:
             self._set_currentMidiProgram(pluginId, value1)
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------

source/frontend/carla_settings.py

@@ -16,13 +16,13 @@
 #
 # For a full copy of the GNU General Public License see the doc/GPL.txt file.
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Imports (PyQt5)
 
 from PyQt5.QtCore import pyqtSlot, Qt
 from PyQt5.QtWidgets import QDialog, QDialogButtonBox, QFileDialog
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Imports (Custom)
 
 import ui_carla_settings
@@ -175,13 +175,13 @@ from carla_shared import (
 
 from patchcanvas.theme import Theme, getThemeName
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # ...
 
 BUFFER_SIZE_LIST = (16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192)
 SAMPLE_RATE_LIST = (22050, 32000, 44100, 48000, 88200, 96000, 176400, 192000)
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Driver Settings
 
 class DriverSettingsW(QDialog):
@@ -193,7 +193,7 @@ class DriverSettingsW(QDialog):
         self.ui = ui_carla_settings_driver.Ui_DriverSettingsW()
         self.ui.setupUi(self)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Internal stuff
 
         self.fDriverIndex = driverIndex
@@ -203,7 +203,7 @@ class DriverSettingsW(QDialog):
         self.fBufferSizes = BUFFER_SIZE_LIST
         self.fSampleRates = SAMPLE_RATE_LIST
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Set-up GUI
 
         for name in self.fDeviceNames:
@@ -211,27 +211,28 @@ class DriverSettingsW(QDialog):
 
         self.setWindowFlags(self.windowFlags() & ~Qt.WindowContextHelpButtonHint)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Load settings
 
         self.loadSettings()
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Set-up connections
 
         self.accepted.connect(self.slot_saveSettings)
         self.ui.b_panel.clicked.connect(self.slot_showDevicePanel)
         self.ui.cb_device.currentIndexChanged.connect(self.slot_updateDeviceInfo)
 
-        # ----------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     def loadSettings(self):
         settings = QSafeSettings("falkTX", "Carla2")
 
-        audioDevice       = settings.value("%s%s/Device"       % (CARLA_KEY_ENGINE_DRIVER_PREFIX, self.fDriverName), "",                                str)
-        audioBufferSize   = settings.value("%s%s/BufferSize"   % (CARLA_KEY_ENGINE_DRIVER_PREFIX, self.fDriverName), CARLA_DEFAULT_AUDIO_BUFFER_SIZE,   int)
-        audioSampleRate   = settings.value("%s%s/SampleRate"   % (CARLA_KEY_ENGINE_DRIVER_PREFIX, self.fDriverName), CARLA_DEFAULT_AUDIO_SAMPLE_RATE,   int)
-        audioTripleBuffer = settings.value("%s%s/TripleBuffer" % (CARLA_KEY_ENGINE_DRIVER_PREFIX, self.fDriverName), CARLA_DEFAULT_AUDIO_TRIPLE_BUFFER, bool)
+        args = (CARLA_KEY_ENGINE_DRIVER_PREFIX, self.fDriverName)
+        audioDevice       = settings.value("%s%s/Device"       % args, "",                                str)
+        audioBufferSize   = settings.value("%s%s/BufferSize"   % args, CARLA_DEFAULT_AUDIO_BUFFER_SIZE,   int)
+        audioSampleRate   = settings.value("%s%s/SampleRate"   % args, CARLA_DEFAULT_AUDIO_SAMPLE_RATE,   int)
+        audioTripleBuffer = settings.value("%s%s/TripleBuffer" % args, CARLA_DEFAULT_AUDIO_TRIPLE_BUFFER, bool)
 
         if audioDevice and audioDevice in self.fDeviceNames:
             self.ui.cb_device.setCurrentIndex(self.fDeviceNames.index(audioDevice))
@@ -257,7 +258,7 @@ class DriverSettingsW(QDialog):
 
         self.ui.cb_triple_buffer.setChecked(audioTripleBuffer and self.ui.cb_triple_buffer.isEnabled())
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     @pyqtSlot()
     def slot_saveSettings(self):
@@ -271,12 +272,13 @@ class DriverSettingsW(QDialog):
         if sampleRate == self.AUTOMATIC_OPTION:
             sampleRate = "0"
 
-        settings.setValue("%s%s/Device"       % (CARLA_KEY_ENGINE_DRIVER_PREFIX, self.fDriverName), self.ui.cb_device.currentText())
-        settings.setValue("%s%s/BufferSize"   % (CARLA_KEY_ENGINE_DRIVER_PREFIX, self.fDriverName), bufferSize)
-        settings.setValue("%s%s/SampleRate"   % (CARLA_KEY_ENGINE_DRIVER_PREFIX, self.fDriverName), sampleRate)
-        settings.setValue("%s%s/TripleBuffer" % (CARLA_KEY_ENGINE_DRIVER_PREFIX, self.fDriverName), self.ui.cb_triple_buffer.isChecked())
+        args = (CARLA_KEY_ENGINE_DRIVER_PREFIX, self.fDriverName)
+        settings.setValue("%s%s/Device"       % args, self.ui.cb_device.currentText())
+        settings.setValue("%s%s/BufferSize"   % args, bufferSize)
+        settings.setValue("%s%s/SampleRate"   % args, sampleRate)
+        settings.setValue("%s%s/TripleBuffer" % args, self.ui.cb_triple_buffer.isChecked())
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     @pyqtSlot()
     def slot_showDevicePanel(self):
@@ -331,7 +333,7 @@ class DriverSettingsW(QDialog):
             self.ui.cb_samplerate.addItem(self.AUTOMATIC_OPTION)
             self.ui.cb_samplerate.setCurrentIndex(0)
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Runtime Driver Settings
 
 class RuntimeDriverSettingsW(QDialog):
@@ -343,7 +345,7 @@ class RuntimeDriverSettingsW(QDialog):
 
         driverDeviceInfo = host.get_runtime_engine_driver_device_info()
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Set-up GUI
 
         self.ui.cb_device.clear()
@@ -367,7 +369,7 @@ class RuntimeDriverSettingsW(QDialog):
         self.adjustSize()
         self.setWindowFlags(self.windowFlags() & ~Qt.WindowContextHelpButtonHint)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Load runtime settings
 
         if host.is_engine_running():
@@ -411,12 +413,12 @@ class RuntimeDriverSettingsW(QDialog):
         if (driverDeviceInfo['hints'] & ENGINE_DRIVER_DEVICE_HAS_CONTROL_PANEL) == 0x0:
             self.ui.b_panel.setEnabled(False)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Set-up connections
 
         self.ui.b_panel.clicked.connect(self.slot_showDevicePanel)
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     def getValues(self):
         audioDevice = self.ui.cb_buffersize.currentText()
@@ -430,13 +432,13 @@ class RuntimeDriverSettingsW(QDialog):
 
         return (audioDevice, int(bufferSize), int(sampleRate))
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     @pyqtSlot()
     def slot_showDevicePanel(self):
         self.host.show_engine_device_control_panel()
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Settings Dialog
 
 class CarlaSettingsW(QDialog):
@@ -469,7 +471,7 @@ class CarlaSettingsW(QDialog):
     # so add +2 pos padding if driverName != "JACK".
     PROCESS_MODE_NON_JACK_PADDING = 2
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     def __init__(self, parent, host, hasCanvas, hasCanvasGL):
         QDialog.__init__(self, parent)
@@ -477,10 +479,11 @@ class CarlaSettingsW(QDialog):
         self.ui = ui_carla_settings.Ui_CarlaSettingsW()
         self.ui.setupUi(self)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Set-up GUI
 
-        self.ui.lw_page.setFixedWidth(48 + 6*3 + fontMetricsHorizontalAdvance(self.ui.lw_page.fontMetrics(), "Experimental"))
+        self.ui.lw_page.setFixedWidth(48 + 6*3 +
+                                      fontMetricsHorizontalAdvance(self.ui.lw_page.fontMetrics(), "Experimental"))
 
         for i in range(host.get_engine_driver_count()):
             self.ui.cb_engine_audio_driver.addItem(host.get_engine_driver_name(i))
@@ -549,12 +552,12 @@ class CarlaSettingsW(QDialog):
 
         self.setWindowFlags(self.windowFlags() & ~Qt.WindowContextHelpButtonHint)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Load settings
 
         self.loadSettings()
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Set-up connections
 
         self.accepted.connect(self.slot_saveSettings)
@@ -591,7 +594,7 @@ class CarlaSettingsW(QDialog):
         #self.ui.cb_canvas_fancy_eyecandy.toggled.connect(self.slot_canvasFancyEyeCandyToggled)
         self.ui.cb_canvas_use_opengl.toggled.connect(self.slot_canvasOpenGLToggled)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Post-connect setup
 
         self.ui.lw_ladspa.setCurrentRow(0)
@@ -612,44 +615,77 @@ class CarlaSettingsW(QDialog):
 
         self.adjustSize()
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     def loadSettings(self):
         settings = QSafeSettings()
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Main
 
         self.ui.ch_main_show_logs.setChecked(self.host.showLogs)
         self.ui.ch_engine_uis_always_on_top.setChecked(self.host.uisAlwaysOnTop)
 
-        self.ui.le_main_proj_folder.setText(settings.value(CARLA_KEY_MAIN_PROJECT_FOLDER, CARLA_DEFAULT_MAIN_PROJECT_FOLDER, str))
-        self.ui.ch_main_theme_pro.setChecked(settings.value(CARLA_KEY_MAIN_USE_PRO_THEME, CARLA_DEFAULT_MAIN_USE_PRO_THEME, bool) and self.ui.group_main_theme.isEnabled())
-        self.ui.cb_main_theme_color.setCurrentIndex(self.ui.cb_main_theme_color.findText(settings.value(CARLA_KEY_MAIN_PRO_THEME_COLOR, CARLA_DEFAULT_MAIN_PRO_THEME_COLOR, str)))
-        self.ui.sb_main_refresh_interval.setValue(settings.value(CARLA_KEY_MAIN_REFRESH_INTERVAL, CARLA_DEFAULT_MAIN_REFRESH_INTERVAL, int))
-        self.ui.ch_main_confirm_exit.setChecked(settings.value(CARLA_KEY_MAIN_CONFIRM_EXIT, CARLA_DEFAULT_MAIN_CONFIRM_EXIT, bool))
+        self.ui.le_main_proj_folder.setText(
+            settings.value(CARLA_KEY_MAIN_PROJECT_FOLDER, CARLA_DEFAULT_MAIN_PROJECT_FOLDER, str))
 
-        # ----------------------------------------------------------------------------------------------------
+        self.ui.ch_main_theme_pro.setChecked(self.ui.group_main_theme.isEnabled() and
+            settings.value(CARLA_KEY_MAIN_USE_PRO_THEME, CARLA_DEFAULT_MAIN_USE_PRO_THEME, bool))
+
+        self.ui.cb_main_theme_color.setCurrentIndex(
+            self.ui.cb_main_theme_color.findText(settings.value(CARLA_KEY_MAIN_PRO_THEME_COLOR,
+                                                                CARLA_DEFAULT_MAIN_PRO_THEME_COLOR, str)))
+
+        self.ui.sb_main_refresh_interval.setValue(
+            settings.value(CARLA_KEY_MAIN_REFRESH_INTERVAL, CARLA_DEFAULT_MAIN_REFRESH_INTERVAL, int))
+
+        self.ui.ch_main_confirm_exit.setChecked(
+            settings.value(CARLA_KEY_MAIN_CONFIRM_EXIT, CARLA_DEFAULT_MAIN_CONFIRM_EXIT, bool))
+
+        # -------------------------------------------------------------------------------------------------------------
         # Canvas
 
-        self.ui.cb_canvas_theme.setCurrentIndex(self.ui.cb_canvas_theme.findText(settings.value(CARLA_KEY_CANVAS_THEME, CARLA_DEFAULT_CANVAS_THEME, str)))
-        self.ui.cb_canvas_size.setCurrentIndex(self.ui.cb_canvas_size.findText(settings.value(CARLA_KEY_CANVAS_SIZE, CARLA_DEFAULT_CANVAS_SIZE, str)))
-        self.ui.cb_canvas_bezier_lines.setChecked(settings.value(CARLA_KEY_CANVAS_USE_BEZIER_LINES, CARLA_DEFAULT_CANVAS_USE_BEZIER_LINES, bool))
-        self.ui.cb_canvas_hide_groups.setChecked(settings.value(CARLA_KEY_CANVAS_AUTO_HIDE_GROUPS, CARLA_DEFAULT_CANVAS_AUTO_HIDE_GROUPS, bool))
-        self.ui.cb_canvas_auto_select.setChecked(settings.value(CARLA_KEY_CANVAS_AUTO_SELECT_ITEMS, CARLA_DEFAULT_CANVAS_AUTO_SELECT_ITEMS, bool))
-        #self.ui.cb_canvas_eyecandy.setChecked(settings.value(CARLA_KEY_CANVAS_EYE_CANDY, CARLA_DEFAULT_CANVAS_EYE_CANDY, bool))
-        self.ui.cb_canvas_fancy_eyecandy.setChecked(settings.value(CARLA_KEY_CANVAS_FANCY_EYE_CANDY, CARLA_DEFAULT_CANVAS_FANCY_EYE_CANDY, bool))
-        self.ui.cb_canvas_use_opengl.setChecked(settings.value(CARLA_KEY_CANVAS_USE_OPENGL, CARLA_DEFAULT_CANVAS_USE_OPENGL, bool) and self.ui.cb_canvas_use_opengl.isEnabled())
-        self.ui.cb_canvas_render_aa.setCheckState(settings.value(CARLA_KEY_CANVAS_ANTIALIASING, CARLA_DEFAULT_CANVAS_ANTIALIASING, int))
-        self.ui.cb_canvas_render_hq_aa.setChecked(settings.value(CARLA_KEY_CANVAS_HQ_ANTIALIASING, CARLA_DEFAULT_CANVAS_HQ_ANTIALIASING, bool) and self.ui.cb_canvas_render_hq_aa.isEnabled())
-        self.ui.cb_canvas_full_repaints.setChecked(settings.value(CARLA_KEY_CANVAS_FULL_REPAINTS, CARLA_DEFAULT_CANVAS_FULL_REPAINTS, bool))
-        self.ui.cb_canvas_inline_displays.setChecked(settings.value(CARLA_KEY_CANVAS_INLINE_DISPLAYS, CARLA_DEFAULT_CANVAS_INLINE_DISPLAYS, bool))
-
-        # ----------------------------------------------------------------------------------------------------
+        self.ui.cb_canvas_theme.setCurrentIndex(
+            self.ui.cb_canvas_theme.findText(settings.value(CARLA_KEY_CANVAS_THEME, CARLA_DEFAULT_CANVAS_THEME, str)))
+
+        self.ui.cb_canvas_size.setCurrentIndex(
+            self.ui.cb_canvas_size.findText(settings.value(CARLA_KEY_CANVAS_SIZE, CARLA_DEFAULT_CANVAS_SIZE, str)))
+
+        self.ui.cb_canvas_bezier_lines.setChecked(
+            settings.value(CARLA_KEY_CANVAS_USE_BEZIER_LINES, CARLA_DEFAULT_CANVAS_USE_BEZIER_LINES, bool))
+
+        self.ui.cb_canvas_hide_groups.setChecked(
+            settings.value(CARLA_KEY_CANVAS_AUTO_HIDE_GROUPS, CARLA_DEFAULT_CANVAS_AUTO_HIDE_GROUPS, bool))
+
+        self.ui.cb_canvas_auto_select.setChecked(
+            settings.value(CARLA_KEY_CANVAS_AUTO_SELECT_ITEMS, CARLA_DEFAULT_CANVAS_AUTO_SELECT_ITEMS, bool))
+
+        #self.ui.cb_canvas_eyecandy.setChecked(
+        #    settings.value(CARLA_KEY_CANVAS_EYE_CANDY, CARLA_DEFAULT_CANVAS_EYE_CANDY, bool))
+
+        self.ui.cb_canvas_fancy_eyecandy.setChecked(
+            settings.value(CARLA_KEY_CANVAS_FANCY_EYE_CANDY, CARLA_DEFAULT_CANVAS_FANCY_EYE_CANDY, bool))
+
+        self.ui.cb_canvas_use_opengl.setChecked(self.ui.cb_canvas_use_opengl.isEnabled() and
+            settings.value(CARLA_KEY_CANVAS_USE_OPENGL, CARLA_DEFAULT_CANVAS_USE_OPENGL, bool))
+
+        self.ui.cb_canvas_render_aa.setCheckState(
+            settings.value(CARLA_KEY_CANVAS_ANTIALIASING, CARLA_DEFAULT_CANVAS_ANTIALIASING, int))
+
+        self.ui.cb_canvas_render_hq_aa.setChecked(self.ui.cb_canvas_render_hq_aa.isEnabled() and
+            settings.value(CARLA_KEY_CANVAS_HQ_ANTIALIASING, CARLA_DEFAULT_CANVAS_HQ_ANTIALIASING, bool))
+
+        self.ui.cb_canvas_full_repaints.setChecked(
+            settings.value(CARLA_KEY_CANVAS_FULL_REPAINTS, CARLA_DEFAULT_CANVAS_FULL_REPAINTS, bool))
+
+        self.ui.cb_canvas_inline_displays.setChecked(
+            settings.value(CARLA_KEY_CANVAS_INLINE_DISPLAYS, CARLA_DEFAULT_CANVAS_INLINE_DISPLAYS, bool))
+
+        # -------------------------------------------------------------------------------------------------------------
 
         settings = QSafeSettings("falkTX", "Carla2")
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Main
 
         self.ui.ch_main_experimental.setChecked(self.host.experimental)
@@ -661,7 +697,7 @@ class CarlaSettingsW(QDialog):
         elif not self.host.showWineBridges:
             self.ui.lw_page.hideRow(self.TAB_INDEX_WINE)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Engine
 
         if self.host.isPlugin:
@@ -690,7 +726,8 @@ class CarlaSettingsW(QDialog):
         self.ui.cb_engine_process_mode_jack.setCurrentIndex(self.host.nextProcessMode)
 
         if self.host.nextProcessMode >= self.PROCESS_MODE_NON_JACK_PADDING:
-            self.ui.cb_engine_process_mode_other.setCurrentIndex(self.host.nextProcessMode-self.PROCESS_MODE_NON_JACK_PADDING)
+            self.ui.cb_engine_process_mode_other.setCurrentIndex(self.host.nextProcessMode -
+                                                                 self.PROCESS_MODE_NON_JACK_PADDING)
         else:
             self.ui.cb_engine_process_mode_other.setCurrentIndex(0)
 
@@ -699,34 +736,30 @@ class CarlaSettingsW(QDialog):
         self.ui.ch_engine_manage_uis.setChecked(self.host.manageUIs)
         self.ui.ch_engine_prefer_ui_bridges.setChecked(self.host.preferUIBridges)
         self.ui.sb_engine_ui_bridges_timeout.setValue(self.host.uiBridgesTimeout)
-        self.ui.ch_engine_force_stereo.setChecked(self.host.forceStereo or not self.ui.ch_engine_force_stereo.isEnabled())
+        self.ui.ch_engine_force_stereo.setChecked(self.host.forceStereo or
+                                                  not self.ui.ch_engine_force_stereo.isEnabled())
         self.ui.ch_engine_prefer_plugin_bridges.setChecked(self.host.preferPluginBridges)
         self.ui.ch_exp_export_lv2.setChecked(self.host.exportLV2)
         self.ui.cb_exp_plugin_bridges.setChecked(self.host.showPluginBridges)
         self.ui.ch_exp_wine_bridges.setChecked(self.host.showWineBridges)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # OSC
 
-        self.ui.ch_osc_enable.setChecked(settings.value(CARLA_KEY_OSC_ENABLED,
-                                                        CARLA_DEFAULT_OSC_ENABLED,
-                                                        bool))
+        self.ui.ch_osc_enable.setChecked(
+            settings.value(CARLA_KEY_OSC_ENABLED, CARLA_DEFAULT_OSC_ENABLED, bool))
 
-        self.ui.group_osc_tcp_port.setChecked(settings.value(CARLA_KEY_OSC_TCP_PORT_ENABLED,
-                                                             CARLA_DEFAULT_OSC_TCP_PORT_ENABLED,
-                                                             bool))
+        self.ui.group_osc_tcp_port.setChecked(
+            settings.value(CARLA_KEY_OSC_TCP_PORT_ENABLED, CARLA_DEFAULT_OSC_TCP_PORT_ENABLED, bool))
 
-        self.ui.group_osc_udp_port.setChecked(settings.value(CARLA_KEY_OSC_UDP_PORT_ENABLED,
-                                                             CARLA_DEFAULT_OSC_UDP_PORT_ENABLED,
-                                                             bool))
+        self.ui.group_osc_udp_port.setChecked(
+            settings.value(CARLA_KEY_OSC_UDP_PORT_ENABLED, CARLA_DEFAULT_OSC_UDP_PORT_ENABLED, bool))
 
-        self.ui.sb_osc_tcp_port_number.setValue(settings.value(CARLA_KEY_OSC_TCP_PORT_NUMBER,
-                                                               CARLA_DEFAULT_OSC_TCP_PORT_NUMBER,
-                                                               int))
+        self.ui.sb_osc_tcp_port_number.setValue(
+            settings.value(CARLA_KEY_OSC_TCP_PORT_NUMBER, CARLA_DEFAULT_OSC_TCP_PORT_NUMBER, int))
 
-        self.ui.sb_osc_udp_port_number.setValue(settings.value(CARLA_KEY_OSC_UDP_PORT_NUMBER,
-                                                               CARLA_DEFAULT_OSC_UDP_PORT_NUMBER,
-                                                               int))
+        self.ui.sb_osc_udp_port_number.setValue(
+            settings.value(CARLA_KEY_OSC_UDP_PORT_NUMBER, CARLA_DEFAULT_OSC_UDP_PORT_NUMBER, int))
 
         if settings.value(CARLA_KEY_OSC_TCP_PORT_RANDOM, CARLA_DEFAULT_OSC_TCP_PORT_RANDOM, bool):
             self.ui.rb_osc_tcp_port_specific.setChecked(False)
@@ -742,11 +775,11 @@ class CarlaSettingsW(QDialog):
             self.ui.rb_osc_udp_port_random.setChecked(False)
             self.ui.rb_osc_udp_port_specific.setChecked(True)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # File Paths
 
         audioPaths = settings.value(CARLA_KEY_PATHS_AUDIO, CARLA_DEFAULT_FILE_PATH_AUDIO, list)
-        midiPaths  = settings.value(CARLA_KEY_PATHS_MIDI,  CARLA_DEFAULT_FILE_PATH_MIDI, list)
+        midiPaths = settings.value(CARLA_KEY_PATHS_MIDI, CARLA_DEFAULT_FILE_PATH_MIDI, list)
 
         audioPaths.sort()
         midiPaths.sort()
@@ -761,7 +794,7 @@ class CarlaSettingsW(QDialog):
                 continue
             self.ui.lw_files_midi.addItem(midiPath)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Plugin Paths
 
         ladspas = settings.value(CARLA_KEY_PATHS_LADSPA, CARLA_DEFAULT_LADSPA_PATH, list)
@@ -815,53 +848,44 @@ class CarlaSettingsW(QDialog):
                 continue
             self.ui.lw_sfz.addItem(sfz)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Wine
 
-        self.ui.le_wine_exec.setText(settings.value(CARLA_KEY_WINE_EXECUTABLE,
-                                                    CARLA_DEFAULT_WINE_EXECUTABLE,
-                                                    str))
+        self.ui.le_wine_exec.setText(
+            settings.value(CARLA_KEY_WINE_EXECUTABLE, CARLA_DEFAULT_WINE_EXECUTABLE, str))
 
-        self.ui.cb_wine_prefix_detect.setChecked(settings.value(CARLA_KEY_WINE_AUTO_PREFIX,
-                                                                CARLA_DEFAULT_WINE_AUTO_PREFIX,
-                                                                bool))
+        self.ui.cb_wine_prefix_detect.setChecked(
+            settings.value(CARLA_KEY_WINE_AUTO_PREFIX, CARLA_DEFAULT_WINE_AUTO_PREFIX, bool))
 
-        self.ui.le_wine_prefix_fallback.setText(settings.value(CARLA_KEY_WINE_FALLBACK_PREFIX,
-                                                               CARLA_DEFAULT_WINE_FALLBACK_PREFIX,
-                                                               str))
+        self.ui.le_wine_prefix_fallback.setText(
+            settings.value(CARLA_KEY_WINE_FALLBACK_PREFIX, CARLA_DEFAULT_WINE_FALLBACK_PREFIX, str))
 
-        self.ui.group_wine_realtime.setChecked(settings.value(CARLA_KEY_WINE_RT_PRIO_ENABLED,
-                                                              CARLA_DEFAULT_WINE_RT_PRIO_ENABLED,
-                                                              bool))
+        self.ui.group_wine_realtime.setChecked(
+            settings.value(CARLA_KEY_WINE_RT_PRIO_ENABLED, CARLA_DEFAULT_WINE_RT_PRIO_ENABLED, bool))
 
-        self.ui.sb_wine_base_prio.setValue(settings.value(CARLA_KEY_WINE_BASE_RT_PRIO,
-                                                          CARLA_DEFAULT_WINE_BASE_RT_PRIO,
-                                                          int))
+        self.ui.sb_wine_base_prio.setValue(
+            settings.value(CARLA_KEY_WINE_BASE_RT_PRIO, CARLA_DEFAULT_WINE_BASE_RT_PRIO, int))
 
-        self.ui.sb_wine_server_prio.setValue(settings.value(CARLA_KEY_WINE_SERVER_RT_PRIO,
-                                                            CARLA_DEFAULT_WINE_SERVER_RT_PRIO,
-                                                            int))
+        self.ui.sb_wine_server_prio.setValue(
+            settings.value(CARLA_KEY_WINE_SERVER_RT_PRIO, CARLA_DEFAULT_WINE_SERVER_RT_PRIO, int))
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Experimental
 
-        self.ui.ch_exp_jack_apps.setChecked(settings.value(CARLA_KEY_EXPERIMENTAL_JACK_APPS,
-                                                           CARLA_DEFAULT_EXPERIMENTAL_JACK_APPS,
-                                                           bool))
+        self.ui.ch_exp_jack_apps.setChecked(
+            settings.value(CARLA_KEY_EXPERIMENTAL_JACK_APPS, CARLA_DEFAULT_EXPERIMENTAL_JACK_APPS, bool))
 
-        self.ui.ch_exp_export_lv2.setChecked(settings.value(CARLA_KEY_EXPERIMENTAL_EXPORT_LV2,
-                                                            CARLA_DEFAULT_EXPERIMENTAL_LV2_EXPORT,
-                                                            bool))
+        self.ui.ch_exp_export_lv2.setChecked(
+            settings.value(CARLA_KEY_EXPERIMENTAL_EXPORT_LV2, CARLA_DEFAULT_EXPERIMENTAL_LV2_EXPORT, bool))
 
-        self.ui.ch_exp_load_lib_global.setChecked(settings.value(CARLA_KEY_EXPERIMENTAL_LOAD_LIB_GLOBAL,
-                                                                 CARLA_DEFAULT_EXPERIMENTAL_LOAD_LIB_GLOBAL,
-                                                                 bool))
+        self.ui.ch_exp_load_lib_global.setChecked(
+            settings.value(CARLA_KEY_EXPERIMENTAL_LOAD_LIB_GLOBAL, CARLA_DEFAULT_EXPERIMENTAL_LOAD_LIB_GLOBAL, bool))
 
-        self.ui.ch_exp_prevent_bad_behaviour.setChecked(settings.value(CARLA_KEY_EXPERIMENTAL_PREVENT_BAD_BEHAVIOUR,
-                                                                       CARLA_DEFAULT_EXPERIMENTAL_PREVENT_BAD_BEHAVIOUR,
-                                                                       bool))
+        self.ui.ch_exp_prevent_bad_behaviour.setChecked(
+            settings.value(CARLA_KEY_EXPERIMENTAL_PREVENT_BAD_BEHAVIOUR,
+                           CARLA_DEFAULT_EXPERIMENTAL_PREVENT_BAD_BEHAVIOUR, bool))
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     @pyqtSlot()
     def slot_saveSettings(self):
@@ -872,7 +896,7 @@ class CarlaSettingsW(QDialog):
         if not self.host.experimental:
             self.resetExperimentalSettings()
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Main
 
         settings.setValue(CARLA_KEY_MAIN_PROJECT_FOLDER,   self.ui.le_main_proj_folder.text())
@@ -881,7 +905,7 @@ class CarlaSettingsW(QDialog):
         settings.setValue(CARLA_KEY_MAIN_PRO_THEME_COLOR,  self.ui.cb_main_theme_color.currentText())
         settings.setValue(CARLA_KEY_MAIN_REFRESH_INTERVAL, self.ui.sb_main_refresh_interval.value())
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Canvas
 
         settings.setValue(CARLA_KEY_CANVAS_THEME,             self.ui.cb_canvas_theme.currentText())
@@ -893,20 +917,21 @@ class CarlaSettingsW(QDialog):
         settings.setValue(CARLA_KEY_CANVAS_FANCY_EYE_CANDY,   self.ui.cb_canvas_fancy_eyecandy.isChecked())
         settings.setValue(CARLA_KEY_CANVAS_USE_OPENGL,        self.ui.cb_canvas_use_opengl.isChecked())
         settings.setValue(CARLA_KEY_CANVAS_HQ_ANTIALIASING,   self.ui.cb_canvas_render_hq_aa.isChecked())
-        settings.setValue(CARLA_KEY_CANVAS_ANTIALIASING,      self.ui.cb_canvas_render_aa.checkState()) # 0, 1, 2 match their enum variants
+        # NOTE: checkState() 0, 1, 2 match their enum variants
+        settings.setValue(CARLA_KEY_CANVAS_ANTIALIASING,      self.ui.cb_canvas_render_aa.checkState())
         settings.setValue(CARLA_KEY_CANVAS_FULL_REPAINTS,     self.ui.cb_canvas_full_repaints.isChecked())
         settings.setValue(CARLA_KEY_CANVAS_INLINE_DISPLAYS,   self.ui.cb_canvas_inline_displays.isChecked())
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
 
         settings = QSafeSettings("falkTX", "Carla2")
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Main
 
         settings.setValue(CARLA_KEY_MAIN_EXPERIMENTAL, self.host.experimental)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Engine
 
         audioDriver = self.ui.cb_engine_audio_driver.currentText()
@@ -919,7 +944,8 @@ class CarlaSettingsW(QDialog):
             if audioDriver == "JACK":
                 self.host.nextProcessMode = self.ui.cb_engine_process_mode_jack.currentIndex()
             else:
-                self.host.nextProcessMode = self.ui.cb_engine_process_mode_other.currentIndex() + self.PROCESS_MODE_NON_JACK_PADDING
+                self.host.nextProcessMode = (self.ui.cb_engine_process_mode_other.currentIndex() +
+                                             self.PROCESS_MODE_NON_JACK_PADDING)
 
             settings.setValue(CARLA_KEY_ENGINE_PROCESS_MODE, self.host.nextProcessMode)
 
@@ -951,7 +977,7 @@ class CarlaSettingsW(QDialog):
         settings.setValue(CARLA_KEY_EXPERIMENTAL_PLUGIN_BRIDGES,  self.host.showPluginBridges)
         settings.setValue(CARLA_KEY_EXPERIMENTAL_WINE_BRIDGES,    self.host.showWineBridges)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # OSC
 
         settings.setValue(CARLA_KEY_OSC_ENABLED,          self.ui.ch_osc_enable.isChecked())
@@ -962,7 +988,7 @@ class CarlaSettingsW(QDialog):
         settings.setValue(CARLA_KEY_OSC_TCP_PORT_NUMBER,  self.ui.sb_osc_tcp_port_number.value())
         settings.setValue(CARLA_KEY_OSC_UDP_PORT_NUMBER,  self.ui.sb_osc_udp_port_number.value())
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # File Paths
 
         audioPaths = []
@@ -980,7 +1006,7 @@ class CarlaSettingsW(QDialog):
         settings.setValue(CARLA_KEY_PATHS_AUDIO, audioPaths)
         settings.setValue(CARLA_KEY_PATHS_MIDI,  midiPaths)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Plugin Paths
 
         ladspas = []
@@ -1028,7 +1054,7 @@ class CarlaSettingsW(QDialog):
         settings.setValue(CARLA_KEY_PATHS_SF2,    sf2s)
         settings.setValue(CARLA_KEY_PATHS_SFZ,    sfzs)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Wine
 
         settings.setValue(CARLA_KEY_WINE_EXECUTABLE, self.ui.le_wine_exec.text())
@@ -1038,31 +1064,34 @@ class CarlaSettingsW(QDialog):
         settings.setValue(CARLA_KEY_WINE_BASE_RT_PRIO, self.ui.sb_wine_base_prio.value())
         settings.setValue(CARLA_KEY_WINE_SERVER_RT_PRIO, self.ui.sb_wine_server_prio.value())
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Experimental
 
         settings.setValue(CARLA_KEY_EXPERIMENTAL_JACK_APPS, self.ui.ch_exp_jack_apps.isChecked())
         settings.setValue(CARLA_KEY_EXPERIMENTAL_LOAD_LIB_GLOBAL, self.ui.ch_exp_load_lib_global.isChecked())
-        settings.setValue(CARLA_KEY_EXPERIMENTAL_PREVENT_BAD_BEHAVIOUR, self.ui.ch_exp_prevent_bad_behaviour.isChecked())
+        settings.setValue(CARLA_KEY_EXPERIMENTAL_PREVENT_BAD_BEHAVIOUR,
+                          self.ui.ch_exp_prevent_bad_behaviour.isChecked())
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     @pyqtSlot()
     def slot_resetSettings(self):
         currentRow = self.ui.lw_page.currentRow()
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Main
 
         if currentRow == self.TAB_INDEX_MAIN:
             self.ui.le_main_proj_folder.setText(CARLA_DEFAULT_MAIN_PROJECT_FOLDER)
-            self.ui.ch_main_theme_pro.setChecked(CARLA_DEFAULT_MAIN_USE_PRO_THEME and self.ui.group_main_theme.isEnabled())
-            self.ui.cb_main_theme_color.setCurrentIndex(self.ui.cb_main_theme_color.findText(CARLA_DEFAULT_MAIN_PRO_THEME_COLOR))
+            self.ui.ch_main_theme_pro.setChecked(CARLA_DEFAULT_MAIN_USE_PRO_THEME and
+                                                 self.ui.group_main_theme.isEnabled())
+            self.ui.cb_main_theme_color.setCurrentIndex(
+                self.ui.cb_main_theme_color.findText(CARLA_DEFAULT_MAIN_PRO_THEME_COLOR))
             self.ui.sb_main_refresh_interval.setValue(CARLA_DEFAULT_MAIN_REFRESH_INTERVAL)
             self.ui.ch_main_confirm_exit.setChecked(CARLA_DEFAULT_MAIN_CONFIRM_EXIT)
             self.ui.ch_main_show_logs.setChecked(CARLA_DEFAULT_MAIN_SHOW_LOGS)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Canvas
 
         elif currentRow == self.TAB_INDEX_CANVAS:
@@ -1075,7 +1104,7 @@ class CarlaSettingsW(QDialog):
             self.ui.cb_canvas_render_aa.setCheckState(Qt.PartiallyChecked) # CARLA_DEFAULT_CANVAS_ANTIALIASING
             self.ui.cb_canvas_full_repaints.setChecked(CARLA_DEFAULT_CANVAS_FULL_REPAINTS)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Engine
 
         elif currentRow == self.TAB_INDEX_ENGINE:
@@ -1087,7 +1116,8 @@ class CarlaSettingsW(QDialog):
                     self.ui.cb_engine_process_mode_jack.setCurrentIndex(CARLA_DEFAULT_PROCESS_MODE)
                     self.ui.sw_engine_process_mode.setCurrentIndex(0) # show all modes
                 else:
-                    self.ui.cb_engine_process_mode_other.setCurrentIndex(CARLA_DEFAULT_PROCESS_MODE-self.PROCESS_MODE_NON_JACK_PADDING)
+                    self.ui.cb_engine_process_mode_other.setCurrentIndex(CARLA_DEFAULT_PROCESS_MODE -
+                                                                         self.PROCESS_MODE_NON_JACK_PADDING)
                     self.ui.sw_engine_process_mode.setCurrentIndex(1) # hide single+multi client modes
 
             self.ui.sb_engine_max_params.setValue(CARLA_DEFAULT_MAX_PARAMETERS)
@@ -1097,7 +1127,7 @@ class CarlaSettingsW(QDialog):
             self.ui.sb_engine_ui_bridges_timeout.setValue(CARLA_DEFAULT_UI_BRIDGES_TIMEOUT)
             self.ui.ch_engine_manage_uis.setChecked(CARLA_DEFAULT_MANAGE_UIS)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # OSC
 
         elif currentRow == self.TAB_INDEX_OSC:
@@ -1121,7 +1151,7 @@ class CarlaSettingsW(QDialog):
                 self.ui.rb_osc_udp_port_random.setChecked(False)
                 self.ui.rb_osc_udp_port_specific.setChecked(True)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Plugin Paths
 
         elif currentRow == self.TAB_INDEX_FILEPATHS:
@@ -1133,7 +1163,7 @@ class CarlaSettingsW(QDialog):
             elif curIndex == self.FILEPATH_INDEX_MIDI:
                 self.ui.lw_files_midi.clear()
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Plugin Paths
 
         elif currentRow == self.TAB_INDEX_PLUGINPATHS:
@@ -1209,7 +1239,7 @@ class CarlaSettingsW(QDialog):
                         continue
                     self.ui.lw_sfz.addItem(path)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Wine
 
         elif currentRow == self.TAB_INDEX_WINE:
@@ -1220,7 +1250,7 @@ class CarlaSettingsW(QDialog):
             self.ui.sb_wine_base_prio.setValue(CARLA_DEFAULT_WINE_BASE_RT_PRIO)
             self.ui.sb_wine_server_prio.setValue(CARLA_DEFAULT_WINE_SERVER_RT_PRIO)
 
-        # ----------------------------------------------------------------------------------------------------
+        # -------------------------------------------------------------------------------------------------------------
         # Experimental
 
         elif currentRow == self.TAB_INDEX_EXPERIMENTAL:
@@ -1237,13 +1267,15 @@ class CarlaSettingsW(QDialog):
 
         # Temporary, until stable
         self.ui.cb_canvas_fancy_eyecandy.setChecked(CARLA_DEFAULT_CANVAS_FANCY_EYE_CANDY)
-        self.ui.cb_canvas_use_opengl.setChecked(CARLA_DEFAULT_CANVAS_USE_OPENGL and self.ui.cb_canvas_use_opengl.isEnabled())
-        self.ui.cb_canvas_render_hq_aa.setChecked(CARLA_DEFAULT_CANVAS_HQ_ANTIALIASING and self.ui.cb_canvas_render_hq_aa.isEnabled())
+        self.ui.cb_canvas_use_opengl.setChecked(CARLA_DEFAULT_CANVAS_USE_OPENGL and
+                                                self.ui.cb_canvas_use_opengl.isEnabled())
+        self.ui.cb_canvas_render_hq_aa.setChecked(CARLA_DEFAULT_CANVAS_HQ_ANTIALIASING and
+                                                  self.ui.cb_canvas_render_hq_aa.isEnabled())
         self.ui.cb_canvas_inline_displays.setChecked(CARLA_DEFAULT_CANVAS_INLINE_DISPLAYS)
         self.ui.ch_engine_force_stereo.setChecked(CARLA_DEFAULT_FORCE_STEREO)
         self.ui.ch_engine_prefer_plugin_bridges.setChecked(CARLA_DEFAULT_PREFER_PLUGIN_BRIDGES)
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     @pyqtSlot(bool)
     def slot_enableExperimental(self, toggled):
@@ -1287,14 +1319,14 @@ class CarlaSettingsW(QDialog):
             # uncheck GL specific option
             self.ui.cb_canvas_render_hq_aa.setChecked(False)
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     @pyqtSlot()
     def slot_getAndSetProjectPath(self):
         # FIXME
         getAndSetPath(self, self.ui.le_main_proj_folder)
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     @pyqtSlot()
     def slot_engineAudioDriverChanged(self):
@@ -1309,7 +1341,7 @@ class CarlaSettingsW(QDialog):
         driverName  = self.ui.cb_engine_audio_driver.currentText()
         DriverSettingsW(self, self.host, driverIndex, driverName).exec_()
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     @pyqtSlot()
     def slot_addPluginPath(self):
@@ -1395,7 +1427,7 @@ class CarlaSettingsW(QDialog):
         elif curIndex == self.PLUGINPATH_INDEX_SFZ:
             self.ui.lw_sfz.currentItem().setText(newPath)
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     @pyqtSlot(int)
     def slot_pluginPathTabChanged(self, index):
@@ -1424,7 +1456,7 @@ class CarlaSettingsW(QDialog):
         self.ui.b_paths_remove.setEnabled(check)
         self.ui.b_paths_change.setEnabled(check)
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     @pyqtSlot()
     def slot_addFilePath(self):
@@ -1470,7 +1502,7 @@ class CarlaSettingsW(QDialog):
         elif curIndex == self.FILEPATH_INDEX_MIDI:
             self.ui.lw_files_midi.currentItem().setText(newPath)
 
-    # --------------------------------------------------------------------------------------------------------
+    # -----------------------------------------------------------------------------------------------------------------
 
     @pyqtSlot(int)
     def slot_filePathTabChanged(self, index):
@@ -1489,7 +1521,7 @@ class CarlaSettingsW(QDialog):
         self.ui.b_filepaths_remove.setEnabled(check)
         self.ui.b_filepaths_change.setEnabled(check)
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------
 # Main
 
 if __name__ == '__main__':
@@ -1510,4 +1542,4 @@ if __name__ == '__main__':
 
     _app.exit_exec()
 
-# ------------------------------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------------------------------------

source/frontend/carla_widgets.py

@@ -143,6 +143,7 @@ class CarlaAboutW(QDialog):
             self.ui.le_osc_url_tcp.setText(self.tr("(Engine not running)"))
             self.ui.le_osc_url_udp.setText(self.tr("(Engine not running)"))
 
+        # pylint: disable=line-too-long
         self.ui.l_osc_cmds.setText("<table>"
                                    "<tr><td>" "/set_active"                 "&nbsp;</td><td>&lt;i-value&gt;</td></tr>"
                                    "<tr><td>" "/set_drywet"                 "&nbsp;</td><td>&lt;f-value&gt;</td></tr>"
@@ -162,6 +163,7 @@ class CarlaAboutW(QDialog):
 
         self.ui.l_example.setText("/Carla/2/set_parameter_value 5 1.0")
         self.ui.l_example_help.setText("<i>(as in this example, \"2\" is the plugin number and \"5\" the parameter)</i>")
+        # pylint: enable=line-too-long
 
         self.ui.l_ladspa.setText(self.tr("Everything! (Including LRDF)"))
         self.ui.l_dssi.setText(self.tr("Everything! (Including CustomData/Chunks)"))
@@ -431,7 +433,8 @@ class PluginParameter(QWidget):
 
                 if ccx > self.fMappedCtrl and not inlist:
                     inlist = True
-                    action = menuMIDI.addAction(self.tr("%02i [0x%02X] (Custom)" % (self.fMappedCtrl, self.fMappedCtrl)))
+                    action = menuMIDI.addAction(self.tr("%02i [0x%02X] (Custom)" % (self.fMappedCtrl,
+                                                                                    self.fMappedCtrl)))
                     action.setCheckable(True)
                     action.setChecked(True)
                     actCCs.append(action)
@@ -525,10 +528,11 @@ class PluginParameter(QWidget):
         elif actSel in actCCs:
             ctrl = int(actSel.text().split(" ", 1)[0].replace("&",""), 10)
         elif actSel == actCustomCC:
+            value = self.fMappedCtrl if self.fMappedCtrl >= 0x01 and self.fMappedCtrl <= 0x77 else 1
             ctrl, ok = QInputDialog.getInt(self,
                                            self.tr("Custom CC"),
                                            "Custom MIDI CC to use:",
-                                           self.fMappedCtrl if self.fMappedCtrl >= 0x01 and self.fMappedCtrl <= 0x77 else 1,
+                                           value,
                                            0x01, 0x77, 1)
             if not ok:
                 return
@@ -915,29 +919,31 @@ class PluginEdit(QDialog):
         self.ui.dial_b_right.setEnabled(pluginHints & PLUGIN_CAN_BALANCE)
         self.ui.dial_pan.setEnabled(pluginHints & PLUGIN_CAN_PANNING)
 
-        self.ui.ch_use_chunks.setEnabled(self.fPluginInfo['optionsAvailable'] & PLUGIN_OPTION_USE_CHUNKS)
-        self.ui.ch_use_chunks.setChecked(self.fPluginInfo['optionsEnabled'] & PLUGIN_OPTION_USE_CHUNKS)
-        self.ui.ch_fixed_buffer.setEnabled(self.fPluginInfo['optionsAvailable'] & PLUGIN_OPTION_FIXED_BUFFERS)
-        self.ui.ch_fixed_buffer.setChecked(self.fPluginInfo['optionsEnabled'] & PLUGIN_OPTION_FIXED_BUFFERS)
-        self.ui.ch_force_stereo.setEnabled(self.fPluginInfo['optionsAvailable'] & PLUGIN_OPTION_FORCE_STEREO)
-        self.ui.ch_force_stereo.setChecked(self.fPluginInfo['optionsEnabled'] & PLUGIN_OPTION_FORCE_STEREO)
-        self.ui.ch_map_program_changes.setEnabled(self.fPluginInfo['optionsAvailable'] & PLUGIN_OPTION_MAP_PROGRAM_CHANGES)
-        self.ui.ch_map_program_changes.setChecked(self.fPluginInfo['optionsEnabled'] & PLUGIN_OPTION_MAP_PROGRAM_CHANGES)
-        self.ui.ch_send_control_changes.setEnabled(self.fPluginInfo['optionsAvailable'] & PLUGIN_OPTION_SEND_CONTROL_CHANGES)
-        self.ui.ch_send_control_changes.setChecked(self.fPluginInfo['optionsEnabled'] & PLUGIN_OPTION_SEND_CONTROL_CHANGES)
-        self.ui.ch_send_channel_pressure.setEnabled(self.fPluginInfo['optionsAvailable'] & PLUGIN_OPTION_SEND_CHANNEL_PRESSURE)
-        self.ui.ch_send_channel_pressure.setChecked(self.fPluginInfo['optionsEnabled'] & PLUGIN_OPTION_SEND_CHANNEL_PRESSURE)
-        self.ui.ch_send_note_aftertouch.setEnabled(self.fPluginInfo['optionsAvailable'] & PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH)
-        self.ui.ch_send_note_aftertouch.setChecked(self.fPluginInfo['optionsEnabled'] & PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH)
-        self.ui.ch_send_pitchbend.setEnabled(self.fPluginInfo['optionsAvailable'] & PLUGIN_OPTION_SEND_PITCHBEND)
-        self.ui.ch_send_pitchbend.setChecked(self.fPluginInfo['optionsEnabled'] & PLUGIN_OPTION_SEND_PITCHBEND)
-        self.ui.ch_send_all_sound_off.setEnabled(self.fPluginInfo['optionsAvailable'] & PLUGIN_OPTION_SEND_ALL_SOUND_OFF)
-        self.ui.ch_send_all_sound_off.setChecked(self.fPluginInfo['optionsEnabled'] & PLUGIN_OPTION_SEND_ALL_SOUND_OFF)
-
-        canSendPrograms = bool((self.fPluginInfo['optionsAvailable'] & PLUGIN_OPTION_SEND_PROGRAM_CHANGES) != 0 and
-                               (self.fPluginInfo['optionsEnabled'] & PLUGIN_OPTION_MAP_PROGRAM_CHANGES) == 0)
+        optsAvailable = self.fPluginInfo['optionsAvailable']
+        optsEnabled = self.fPluginInfo['optionsEnabled']
+        self.ui.ch_use_chunks.setEnabled(optsAvailable & PLUGIN_OPTION_USE_CHUNKS)
+        self.ui.ch_use_chunks.setChecked(optsEnabled & PLUGIN_OPTION_USE_CHUNKS)
+        self.ui.ch_fixed_buffer.setEnabled(optsAvailable & PLUGIN_OPTION_FIXED_BUFFERS)
+        self.ui.ch_fixed_buffer.setChecked(optsEnabled & PLUGIN_OPTION_FIXED_BUFFERS)
+        self.ui.ch_force_stereo.setEnabled(optsAvailable & PLUGIN_OPTION_FORCE_STEREO)
+        self.ui.ch_force_stereo.setChecked(optsEnabled & PLUGIN_OPTION_FORCE_STEREO)
+        self.ui.ch_map_program_changes.setEnabled(optsAvailable & PLUGIN_OPTION_MAP_PROGRAM_CHANGES)
+        self.ui.ch_map_program_changes.setChecked(optsEnabled & PLUGIN_OPTION_MAP_PROGRAM_CHANGES)
+        self.ui.ch_send_control_changes.setEnabled(optsAvailable & PLUGIN_OPTION_SEND_CONTROL_CHANGES)
+        self.ui.ch_send_control_changes.setChecked(optsEnabled & PLUGIN_OPTION_SEND_CONTROL_CHANGES)
+        self.ui.ch_send_channel_pressure.setEnabled(optsAvailable & PLUGIN_OPTION_SEND_CHANNEL_PRESSURE)
+        self.ui.ch_send_channel_pressure.setChecked(optsEnabled & PLUGIN_OPTION_SEND_CHANNEL_PRESSURE)
+        self.ui.ch_send_note_aftertouch.setEnabled(optsAvailable & PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH)
+        self.ui.ch_send_note_aftertouch.setChecked(optsEnabled & PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH)
+        self.ui.ch_send_pitchbend.setEnabled(optsAvailable & PLUGIN_OPTION_SEND_PITCHBEND)
+        self.ui.ch_send_pitchbend.setChecked(optsEnabled & PLUGIN_OPTION_SEND_PITCHBEND)
+        self.ui.ch_send_all_sound_off.setEnabled(optsAvailable & PLUGIN_OPTION_SEND_ALL_SOUND_OFF)
+        self.ui.ch_send_all_sound_off.setChecked(optsEnabled & PLUGIN_OPTION_SEND_ALL_SOUND_OFF)
+
+        canSendPrograms = bool((optsAvailable & PLUGIN_OPTION_SEND_PROGRAM_CHANGES) != 0 and
+                               (optsEnabled & PLUGIN_OPTION_MAP_PROGRAM_CHANGES) == 0)
         self.ui.ch_send_program_changes.setEnabled(canSendPrograms)
-        self.ui.ch_send_program_changes.setChecked(self.fPluginInfo['optionsEnabled'] & PLUGIN_OPTION_SEND_PROGRAM_CHANGES)
+        self.ui.ch_send_program_changes.setChecked(optsEnabled & PLUGIN_OPTION_SEND_PROGRAM_CHANGES)
 
         self.ui.sw_programs.setCurrentIndex(0 if self.fPluginInfo['type'] in (PLUGIN_VST2, PLUGIN_SFZ) else 1)
 
@@ -1308,7 +1314,10 @@ class PluginEdit(QDialog):
             return
 
         if self.fCurrentStateFilename:
-            askTry = QMessageBox.question(self, self.tr("Overwrite?"), self.tr("Overwrite previously created file?"), QMessageBox.Ok|QMessageBox.Cancel)
+            askTry = QMessageBox.question(self,
+                                          self.tr("Overwrite?"),
+                                          self.tr("Overwrite previously created file?"),
+                                          QMessageBox.Ok|QMessageBox.Cancel)
 
             if askTry == QMessageBox.Ok:
                 self.host.save_plugin_state(self.fPluginId, self.fCurrentStateFilename)
@@ -1337,7 +1346,10 @@ class PluginEdit(QDialog):
             for i in range(self.host.get_program_count(self.fPluginId)):
                 presetList.append("%03i - %s" % (i+1, self.host.get_program_name(self.fPluginId, i)))
 
-            ret = QInputDialog.getItem(self, self.tr("Open LV2 Preset"), self.tr("Select an LV2 Preset:"), presetList, 0, False)
+            ret = QInputDialog.getItem(self,
+                                       self.tr("Open LV2 Preset"),
+                                       self.tr("Select an LV2 Preset:"),
+                                       presetList, 0, False)
 
             if ret[1]:
                 index = int(ret[0].split(" - ", 1)[0])-1
@@ -1404,7 +1416,8 @@ class PluginEdit(QDialog):
         # handle map-program-changes and send-program-changes conflict
 
         if option == PLUGIN_OPTION_MAP_PROGRAM_CHANGES and not clicked:
-            self.ui.ch_send_program_changes.setEnabled(self.fPluginInfo['optionsAvailable'] & PLUGIN_OPTION_SEND_PROGRAM_CHANGES)
+            self.ui.ch_send_program_changes.setEnabled(
+                self.fPluginInfo['optionsAvailable'] & PLUGIN_OPTION_SEND_PROGRAM_CHANGES)
 
             # restore send-program-changes if needed
             if self.ui.ch_send_program_changes.isChecked():
@@ -1575,7 +1588,13 @@ class PluginEdit(QDialog):
 
         if actSelected == actSet:
             current   = minimum + (maximum-minimum)*(float(sender.value())/10000)
-            value, ok = QInputDialog.getInt(self, self.tr("Set value"), label, round(current*100.0), round(minimum*100.0), round(maximum*100.0), 1)
+            value, ok = QInputDialog.getInt(self,
+                                            self.tr("Set value"),
+                                            label,
+                                            round(current*100.0),
+                                            round(minimum*100.0),
+                                            round(maximum*100.0),
+                                            1)
             if ok:
                 value = float(value)/100.0
 
@@ -1692,7 +1711,8 @@ class PluginEdit(QDialog):
     def _updateCtrlPrograms(self):
         self.ui.keyboard.setEnabled(self.fControlChannel >= 0)
 
-        if self.fPluginInfo['category'] != PLUGIN_CATEGORY_SYNTH or self.fPluginInfo['type'] not in (PLUGIN_INTERNAL, PLUGIN_SF2):
+        if (self.fPluginInfo['category'] != PLUGIN_CATEGORY_SYNTH or
+            self.fPluginInfo['type'] not in (PLUGIN_INTERNAL, PLUGIN_SF2)):
             return
 
         if self.fControlChannel < 0:

source/frontend/widgets/canvaspreviewframe.py

@@ -104,7 +104,6 @@ class CanvasPreviewFrame(QFrame):
         self.fZoomCursors[self._kCursorZoomOut] = QCursor(QPixmap(":/cursors/zoom-out_black.png"), 8, 7)
 
     def init(self, scene: QGraphicsScene, realWidth: float, realHeight: float, useCustomPaint: bool = False):
-        # realWidth, realHeight = float(realWidth), float(realHeight)
         self.fScene = scene
         self.fRenderSource = QRectF(0.0, 0.0, realWidth, realHeight)
         self.fInternalRatio = realWidth / realHeight
@@ -119,21 +118,21 @@ class CanvasPreviewFrame(QFrame):
 
     # -----------------------------------------------------------------------------------------------------------------
 
-    def setViewPosX(self, xp):
+    def setViewPosX(self, xp: float):
         self.fViewRect[self._kRectX] = xp * (self.fInternalWidth - self.fViewRect[self._kRectWidth]/self.fScale)
         self.update()
 
-    def setViewPosY(self, yp):
+    def setViewPosY(self, yp: float):
         self.fViewRect[self._kRectY] = yp * (self.fInternalHeight - self.fViewRect[self._kRectHeight]/self.fScale)
         self.update()
 
-    def setViewScale(self, scale):
+    def setViewScale(self, scale: float):
         self.fScale = scale
 
         if self.fRealParent is not None:
             QTimer.singleShot(0, self.fRealParent.slot_miniCanvasCheckAll)
 
-    def setViewSize(self, width, height):
+    def setViewSize(self, width: float, height: float):
         self.fViewRect[self._kRectWidth] = width * self.fInternalWidth
         self.fViewRect[self._kRectHeight] = height * self.fInternalHeight
         self.update()
@@ -387,7 +386,7 @@ class CanvasPreviewFrame(QFrame):
 
         self.cursor().setPos(self.fMouseInitialZoomPos)
 
-    def _updateMouseMode(self, event=None):
+    def _updateMouseMode(self, event = None):
         if self.fMouseLeftDown and self.fMouseRightDown:
             self.fMouseInitialZoomPos = event.globalPos()
             self.setCursor(self.fZoomCursors[self._kCursorZoom])