Carla/source/frontend/carla_skin.py

#!/usr/bin/env python3
# SPDX-FileCopyrightText: 2011-2024 Filipe Coelho <falktx@falktx.com>
# SPDX-License-Identifier: GPL-2.0-or-later

# ------------------------------------------------------------------------------------------------------------
# Imports (Global)

from qt_compat import qt_config
import math
import random
import operator
from operator import itemgetter

if qt_config == 5:
    from PyQt5.QtCore import Qt, QRectF, QLineF, QTimer
    from PyQt5.QtGui import QColor, QFont, QFontDatabase, QPainter, QPainterPath, QPen
    from PyQt5.QtWidgets import QColorDialog, QFrame, QLineEdit, QPushButton, QComboBox, QSizePolicy
elif qt_config == 6:
    from PyQt6.QtCore import Qt, QRectF, QLineF, QTimer
    from PyQt6.QtGui import QColor, QFont, QFontDatabase, QPainter, QPainterPath, QPen
    from PyQt6.QtWidgets import QColorDialog, QFrame, QLineEdit, QPushButton, QComboBox, QSizePolicy

# ------------------------------------------------------------------------------------------------------------
# Imports (Custom)

import ui_carla_plugin_calf
import ui_carla_plugin_classic
import ui_carla_plugin_compact
import ui_carla_plugin_default
import ui_carla_plugin_presets

from carla_backend import *
from carla_shared import *
from carla_widgets import *
from widgets.digitalpeakmeter import DigitalPeakMeter
from widgets.scalabledial import ScalableDial

# ------------------------------------------------------------------------------------------------------------
# Plugin Skin Rules (WORK IN PROGRESS)

# Base is a QFrame (NoFrame, Plain, 0-size lines), with "PluginWidget" as object name.
# Spacing of the top-most layout must be 1px.
# Top and bottom margins must be 3px (can be split between different Qt layouts).
# Left and right margins must be 6px (can be split between different Qt layouts).
# If the left or right side has built-in margins, say a transparent svg border,
# those margins must be taken into consideration.
#
# There's a top and bottom layout, separated by a horizontal line.
# Compacted skins do not have the bottom layout and separating line.

#  T O P  A R E A
#
#  -----------------------------------------------------------------
# |         <> | <>                            [ WIDGETS ] [ LEDS ] |
# | BUTTONS <> | <> PLUGIN NAME   < spacer >   [ WIDGETS ] [ LEDS ] |
# |         <> | <>                            [ WIDGETS ] [ LEDS ] |
#  -----------------------------------------------------------------
#
# Buttons area has size fixed. (TBA)
# Spacers at the left of the plugin name must be 8x1 in size (fixed).
# The line before the plugin name must be height-10px (fixed).
# WIDGETS area can be extended to the left, if using meters they should have 80px.
# WIDGETS margins are 4px for left+right and 2px for top+bottom, with 4px spacing.

# ------------------------------------------------------------------------------------------------------------
# Try to "shortify" a parameter name

def getParameterShortName(paramName):
    paramName = paramName.split("/",1)[0].split(" (",1)[0].split(" [",1)[0].strip()
    paramLow  = paramName.lower()

    # Cut useless prefix
    if paramLow.startswith("compressor "):
        paramName = paramName.replace("ompressor ", ".", 1)
        paramLow  = paramName.lower()
    elif paramLow.startswith("room "):
        paramName = paramName.split(" ",1)[1]
        paramLow  = paramName.lower()

    # Cut useless suffix
    if paramLow.endswith(" level"):
        paramName = paramName.rsplit(" ",1)[0]
        paramLow  = paramName.lower()
    elif paramLow.endswith(" time"):
        paramName = paramName.rsplit(" ",1)[0]
        paramLow  = paramName.lower()

    # Cut generic names
    if "attack" in paramLow:
        paramName = paramName.replace("ttack", "tk")
    elif "bandwidth" in paramLow:
        paramName = paramName.replace("andwidth", "w")
    elif "damping" in paramLow:
        paramName = paramName.replace("amping", "amp")
    elif "distortion" in paramLow:
        paramName = paramName.replace("istortion", "ist")
    elif "feedback" in paramLow:
        paramName = paramName.replace("eedback", "b")
    elif "frequency" in paramLow:
        paramName = paramName.replace("requency", "req")
    elif "input" in paramLow:
        paramName = paramName.replace("nput", "n")
    elif "makeup" in paramLow:
        paramName = paramName.replace("akeup", "kUp" if "Make" in paramName else "kup")
    elif "output" in paramLow:
        paramName = paramName.replace("utput", "ut")
    elif "random" in paramLow:
        paramName = paramName.replace("andom", "nd")
    elif "threshold" in paramLow:
        paramName = paramName.replace("hreshold", "hres")

    # remove space if last char from 1st word is lowercase and the first char from the 2nd is uppercase,
    # or if 2nd is a number
    if " " in paramName:
        name1, name2 = paramName.split(" ", 1)
        if (name1[-1].islower() and name2[0].isupper()) or name2.isdigit():
            paramName = paramName.replace(" ", "", 1)

    # cut stuff if too big
    if len(paramName) > 7:
        paramName = paramName.replace("a","").replace("e","").replace("i","").replace("o","").replace("u","")

        if len(paramName) > 7:
            paramName = paramName[:7]

    return paramName.strip()

# ------------------------------------------------------------------------------------------------------------
# Get RGB colors for a plugin category

def getColorFromCategory(category):
    r = 39
    g = 40
    b = 40

    if category == PLUGIN_CATEGORY_MODULATOR:
        r += 10
    elif category == PLUGIN_CATEGORY_EQ:
        g += 10
    elif category == PLUGIN_CATEGORY_FILTER:
        b += 10
    elif category == PLUGIN_CATEGORY_DELAY:
        r += 15
        b -= 15
    elif category == PLUGIN_CATEGORY_DISTORTION:
        g += 10
        b += 10
    elif category == PLUGIN_CATEGORY_DYNAMICS:
        r += 10
        b += 10
    elif category == PLUGIN_CATEGORY_UTILITY:
        r += 10
        g += 10

    return (r, g, b)

# ------------------------------------------------------------------------------------------------------------

skinList = [
        "default",
        "3bandeq",
        "rncbc",
        "calf_black",
        "calf_blue",
        "classic",
        "openav-old",
        "openav",
        "zynfx",
        "presets",
        "mpresets",
        "tube",
    ]

skinListTweakable = [
        "default",
        "calf",
        "openav",
        "zynfx",
        "tube",
    ]

def arrayIndex(array, value):
    for index, item in enumerate(array):
       if item.startswith(value):
            return index
    return 0

# ------------------------------------------------------------------------------------------------------------
# Abstract plugin slot

class AbstractPluginSlot(QFrame, PluginEditParentMeta):
    def __init__(self, parent, host, pluginId, skinColor, skinStyle):
        QFrame.__init__(self, parent)
        self.host = host
        self.fParent = parent

        # -------------------------------------------------------------
        # Get plugin info

        self.fPluginId   = pluginId
        self.fPluginInfo = host.get_plugin_info(self.fPluginId)
        self.fSkinColor  = skinColor
        self.fSkinStyle  = skinStyle
        self.fDarkStyle  = QColor(skinColor[0], skinColor[1], skinColor[2]).blackF() > 0.4

        # -------------------------------------------------------------
        # Internal stuff

        self.fIsActive   = False
        self.fIsSelected = False

        self.fLastGreenLedState = False
        self.fLastBlueLedState  = False

        self.fParameterIconTimer = ICON_STATE_NULL
        self.fParameterList      = [] # index, widget

        audioCountInfo = host.get_audio_port_count_info(self.fPluginId)

        self.fPeaksInputCount  = audioCountInfo['ins']
        self.fPeaksOutputCount = audioCountInfo['outs']

        if self.fPeaksInputCount > 2:
            self.fPeaksInputCount = 2

        if self.fPeaksOutputCount > 2:
            self.fPeaksOutputCount = 2

        self.fAdjustViewableKnobCountScheduled = False

        # load fresh skin tweaks
        self.fTweaks = {}
        loadTweaks(self)

        # take panel color hue & sat to make "follow panel" paint
        color = QColor(skinColor[0], skinColor[1], skinColor[2])
        hue = color.hueF() % 1.0
        sat = color.saturationF()
        self.fColorHint = int(hue * 100) + int(sat * 100) / 100.0  # 50.80: 50% hue, 80% sat

        # used during testing
        self.fIdleTimerId = 0

        # -------------------------------------------------------------
        # Set-up GUI

        self.fEditDialog = PluginEdit(self, host, self.fPluginId)

        # -------------------------------------------------------------
        # Set-up common widgets (as none)

        self.b_enable = None
        self.b_gui    = None
        self.b_edit   = None
        self.b_remove = None

        self.cb_presets = None

        self.label_name    = None
        self.label_presets = None
        self.label_type    = None

        self.led_control   = None
        self.led_midi      = None
        self.led_audio_in  = None
        self.led_audio_out = None

        self.peak_in  = None
        self.peak_out = None

        self.w_knobs_left  = None
        self.w_knobs_right = None
        self.spacer_knobs  = None

        self.slowTimer = 0

        # -------------------------------------------------------------
        # Set-up connections

        self.customContextMenuRequested.connect(self.slot_showCustomMenu)
        host.PluginRenamedCallback.connect(self.slot_handlePluginRenamedCallback)
        host.PluginUnavailableCallback.connect(self.slot_handlePluginUnavailableCallback)
        host.ParameterValueChangedCallback.connect(self.slot_handleParameterValueChangedCallback)
        host.ParameterDefaultChangedCallback.connect(self.slot_handleParameterDefaultChangedCallback)
        host.ParameterMappedControlIndexChangedCallback.connect(self.slot_handleParameterMappedControlIndexChangedCallback)
        host.ParameterMappedRangeChangedCallback.connect(self.slot_handleParameterMappedRangeChangedCallback)
        host.ParameterMidiChannelChangedCallback.connect(self.slot_handleParameterMidiChannelChangedCallback)
        host.ProgramChangedCallback.connect(self.slot_handleProgramChangedCallback)
        host.MidiProgramChangedCallback.connect(self.slot_handleMidiProgramChangedCallback)
        host.OptionChangedCallback.connect(self.slot_handleOptionChangedCallback)
        host.UiStateChangedCallback.connect(self.slot_handleUiStateChangedCallback)

        # Prepare resources
        self.sel_pen = QPen(Qt.cyan, 1, Qt.SolidLine, Qt.FlatCap, Qt.MiterJoin)
        self.sel_pen.setDashPattern([2.0, 4.0])
        self.sel_side_pen = QPen(Qt.cyan, 2, Qt.SolidLine, Qt.FlatCap)
        self.shadow_pen = QPen(Qt.black, 1)

    # -----------------------------------------------------------------

    @pyqtSlot(int, str)
    def slot_handlePluginRenamedCallback(self, pluginId, newName):
        if self.fEditDialog is not None and self.fPluginId == pluginId:
            self.setName(newName)

    @pyqtSlot(int, str)
    def slot_handlePluginUnavailableCallback(self, pluginId, errorMsg):
        if self.fEditDialog is not None and self.fPluginId == pluginId:
            pass

    @pyqtSlot(int, int, float)
    def slot_handleParameterValueChangedCallback(self, pluginId, index, value):
        if self.fEditDialog is not None and self.fPluginId == pluginId:
            self.setParameterValue(index, value, True)

    @pyqtSlot(int, int, float)
    def slot_handleParameterDefaultChangedCallback(self, pluginId, index, value):
        if self.fEditDialog is not None and self.fPluginId == pluginId:
            self.setParameterDefault(index, value)

    @pyqtSlot(int, int, int)
    def slot_handleParameterMappedControlIndexChangedCallback(self, pluginId, index, ctrl):
        if self.fEditDialog is not None and self.fPluginId == pluginId:
            self.setParameterMappedControlIndex(index, ctrl)

    @pyqtSlot(int, int, float, float)
    def slot_handleParameterMappedRangeChangedCallback(self, pluginId, index, minimum, maximum):
        if self.fEditDialog is not None and self.fPluginId == pluginId:
            self.setParameterMappedRange(index, minimum, maximum)

    @pyqtSlot(int, int, int)
    def slot_handleParameterMidiChannelChangedCallback(self, pluginId, index, channel):
        if self.fEditDialog is not None and self.fPluginId == pluginId:
            self.setParameterMidiChannel(index, channel)

    @pyqtSlot(int, int)
    def slot_handleProgramChangedCallback(self, pluginId, index):
        if self.fEditDialog is not None and self.fPluginId == pluginId:
            self.setProgram(index, True)

    @pyqtSlot(int, int)
    def slot_handleMidiProgramChangedCallback(self, pluginId, index):
        if self.fEditDialog is not None and self.fPluginId == pluginId:
            self.setMidiProgram(index, True)

    @pyqtSlot(int, int, bool)
    def slot_handleOptionChangedCallback(self, pluginId, option, yesNo):
        if self.fEditDialog is not None and self.fPluginId == pluginId:
            self.setOption(option, yesNo)

    @pyqtSlot(int, int)
    def slot_handleUiStateChangedCallback(self, pluginId, state):
        if self.fEditDialog is not None and self.fPluginId == pluginId:
            self.customUiStateChanged(state)

    # @pyqtSlot(int, int, int)
    # def slot_handleParameterKnobVisible(self, pluginId, index, value):
    #     if self.fEditDialog is not None and self.fPluginId == pluginId:
    #         self.setKnobVisible(index, value)

    # @pyqtSlot(bool)
    # def slot_knobVisible(self, value):
    #     self.host.set_drywet(self.fPluginId, value)
    #     self.setParameterValue(PARAMETER_DRYWET, value, True)

    @pyqtSlot(float)
    def slot_dryWetChanged(self, value):
        self.host.set_drywet(self.fPluginId, value)
        self.setParameterValue(PARAMETER_DRYWET, value, True)

    @pyqtSlot(float)
    def slot_volumeChanged(self, value):
        self.host.set_volume(self.fPluginId, value)
        self.setParameterValue(PARAMETER_VOLUME, value, True)

    # ------------------------------------------------------------------

    def tweak(self, skinName, tweakName, default):
        return self.fTweaks.get(skinName + tweakName, self.fTweaks.get(tweakName, default))

    def ready(self):
        self.fIsActive = bool(self.host.get_internal_parameter_value(self.fPluginId, PARAMETER_ACTIVE) >= 0.5)

        isCalfSkin  = self.fSkinStyle.startswith("calf") and not isinstance(self, PluginSlot_Compact)
        imageSuffix = "white" if self.fDarkStyle else "black"
        whiteLabels = self.fDarkStyle

        if self.fSkinStyle.startswith("calf") or self.fSkinStyle.startswith("openav") or self.fSkinStyle in (
            "3bandeq", "3bandsplitter", "pingpongpan", "nekobi", "calf_black", "zynfx"):

            imageSuffix = "white"
            whiteLabels = True

        if self.b_enable is not None:
            self.b_enable.setChecked(self.fIsActive)
            self.b_enable.clicked.connect(self.slot_enableClicked)

            if isCalfSkin:
                self.b_enable.setPixmaps(":/bitmaps/button_calf3.png",
                                         ":/bitmaps/button_calf3_down.png",
                                         ":/bitmaps/button_calf3.png")
            else:
                self.b_enable.setSvgs(":/scalable/button_off.svg",
                                      ":/scalable/button_on.svg",
                                      ":/scalable/button_off.svg")

        if self.b_gui is not None:
            self.b_gui.clicked.connect(self.slot_showCustomUi)
            self.b_gui.setEnabled(bool(self.fPluginInfo['hints'] & PLUGIN_HAS_CUSTOM_UI))

            if isCalfSkin:
                self.b_gui.setPixmaps(":/bitmaps/button_calf2.png",
                                      ":/bitmaps/button_calf2_down.png",
                                      ":/bitmaps/button_calf2_hover.png")
            elif self.fPluginInfo['iconName'] == "distrho" or self.fSkinStyle in ("3bandeq", "3bandsplitter", "pingpongpan", "nekobi"):
                self.b_gui.setPixmaps(":/bitmaps/button_distrho-{}.png".format(imageSuffix),
                                      ":/bitmaps/button_distrho_down-{}.png".format(imageSuffix),
                                      ":/bitmaps/button_distrho_hover-{}.png".format(imageSuffix))
            elif self.fPluginInfo['iconName'] == "file":
                self.b_gui.setPixmaps(":/bitmaps/button_file-{}.png".format(imageSuffix),
                                      ":/bitmaps/button_file_down-{}.png".format(imageSuffix),
                                      ":/bitmaps/button_file_hover-{}.png".format(imageSuffix))
            else:
                if imageSuffix == "black": # TODO
                    self.b_gui.setPixmaps(":/bitmaps/button_gui-{}.png".format(imageSuffix),
                                          ":/bitmaps/button_gui_down-{}.png".format(imageSuffix),
                                          ":/bitmaps/button_gui_hover-{}.png".format(imageSuffix))
                else:
                    self.b_gui.setSvgs(":/scalable/button_gui-{}.svg".format(imageSuffix),
                                       ":/scalable/button_gui_down-{}.svg".format(imageSuffix),
                                       ":/scalable/button_gui_hover-{}.svg".format(imageSuffix))

        if self.b_edit is not None:
            self.b_edit.clicked.connect(self.slot_showEditDialog)

            if isCalfSkin:
                self.b_edit.setPixmaps(":/bitmaps/button_calf2.png",
                                       ":/bitmaps/button_calf2_down.png",
                                       ":/bitmaps/button_calf2_hover.png")
            else:
                self.b_edit.setSvgs(":/scalable/button_edit-{}.svg".format(imageSuffix),
                                    ":/scalable/button_edit_down-{}.svg".format(imageSuffix),
                                    ":/scalable/button_edit_hover-{}.svg".format(imageSuffix))

        else:
            # Edit button *must* be available
            self.b_edit = QPushButton(self)
            self.b_edit.setCheckable(True)
            self.b_edit.hide()

        if self.b_remove is not None:
            self.b_remove.clicked.connect(self.slot_removePlugin)

        if self.label_name is not None:
            self.label_name.setEnabled(self.fIsActive)
            self.label_name.setText(self.fPluginInfo['name'])

            nameFont = self.label_name.font()

            if self.fSkinStyle.startswith("calf"):
                nameFont.setBold(True)
                nameFont.setPixelSize(12)

            elif self.fSkinStyle.startswith("openav"):
                QFontDatabase.addApplicationFont(":/fonts/uranium.ttf")
                nameFont.setFamily("Uranium")
                nameFont.setPixelSize(15)
                nameFont.setCapitalization(QFont.AllUppercase)

            else:
                nameFont.setBold(True)
                nameFont.setPixelSize(11)

            self.label_name.setFont(nameFont)

        if self.label_presets is not None:
            presetFont = self.label_presets.font()
            presetFont.setBold(True)
            presetFont.setPixelSize(10)
            self.label_presets.setFont(presetFont)

        if self.label_type is not None:
            self.label_type.setText(getPluginTypeAsString(self.fPluginInfo['type']))

        if self.led_control is not None:
            self.led_control.setColor(self.led_control.YELLOW)
            self.led_control.setEnabled(False)

        if self.led_midi is not None:
            self.led_midi.setColor(self.led_midi.RED)
            self.led_midi.setEnabled(False)

        if self.led_audio_in is not None:
            self.led_audio_in.setColor(self.led_audio_in.GREEN)
            self.led_audio_in.setEnabled(False)

        if self.led_audio_out is not None:
            self.led_audio_out.setColor(self.led_audio_out.BLUE)
            self.led_audio_out.setEnabled(False)

        if self.peak_in is not None:
            self.peak_in.setChannelCount(self.fPeaksInputCount)
            self.peak_in.setMeterColor(DigitalPeakMeter.COLOR_GREEN)
            self.peak_in.setMeterOrientation(DigitalPeakMeter.HORIZONTAL)

            if self.fSkinStyle.startswith("calf"):
                self.peak_in.setMeterStyle(DigitalPeakMeter.STYLE_CALF)
            elif self.fSkinStyle == "rncbc":
                self.peak_in.setMeterStyle(DigitalPeakMeter.STYLE_RNCBC)
            elif self.fSkinStyle.startswith("openav") or self.fSkinStyle == "zynfx":
                self.peak_in.setMeterStyle(DigitalPeakMeter.STYLE_OPENAV)
            elif self.fSkinStyle == "tube":
                self.peak_in.setMeterStyle(DigitalPeakMeter.STYLE_TUBE)
                self.peak_in.setMeterLinesEnabled(False)

            if self.fPeaksInputCount == 0 and not isinstance(self, PluginSlot_Classic):
                self.peak_in.hide()

        if self.peak_out is not None:
            self.peak_out.setChannelCount(self.fPeaksOutputCount)
            self.peak_out.setMeterColor(DigitalPeakMeter.COLOR_BLUE)
            self.peak_out.setMeterOrientation(DigitalPeakMeter.HORIZONTAL)

            if self.fSkinStyle.startswith("calf"):
                self.peak_out.setMeterStyle(DigitalPeakMeter.STYLE_CALF)
            elif self.fSkinStyle == "rncbc":
                self.peak_out.setMeterStyle(DigitalPeakMeter.STYLE_RNCBC)
            elif self.fSkinStyle.startswith("openav") or self.fSkinStyle == "zynfx":
                self.peak_out.setMeterStyle(DigitalPeakMeter.STYLE_OPENAV)
            elif self.fSkinStyle == "tube":
                self.peak_out.setMeterStyle(DigitalPeakMeter.STYLE_TUBE)
                self.peak_out.setMeterLinesEnabled(False)

            if self.fPeaksOutputCount == 0 and not isinstance(self, PluginSlot_Classic):
                self.peak_out.hide()

        # -------------------------------------------------------------

        if self.fSkinStyle == "openav":
            styleSheet = """
                QFrame#PluginWidget {
                    background-color: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1,
                                                      stop: 0 #383838, stop: %f #111111, stop: 1.0 #111111);
                }
                QLabel#label_name          { color: #FFFFFF; }
                QLabel#label_name:disabled { color: #505050; }
            """ % (0.95 if isinstance(self, PluginSlot_Compact) else 0.35)

        elif self.fSkinStyle == "openav-old":
            styleSheet = """
                QFrame#PluginWidget {
                    background-color: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1,
                                                      stop: 0 #303030, stop: %f #111111, stop: 1.0 #111111);
                }
                QLabel#label_name          { color: #FF5100; }
                QLabel#label_name:disabled { color: #505050; }
            """ % (0.95 if isinstance(self, PluginSlot_Compact) else 0.35)

        else:
            colorEnabled  = "#BBB"
            colorDisabled = "#555"

            if self.fSkinStyle in ("3bandeq", "calf_black", "calf_blue", "nekobi", "zynfx"):
                styleSheet2  = "background-image: url(:/bitmaps/background_%s.png);" % self.fSkinStyle
            else:
                styleSheet2  = "background-color: rgb(200, 200, 200);"
                if self.fSkinStyle not in ("classic"):
                    styleSheet2 += "background-image: url(:/bitmaps/background_noise1.png);"

                if not self.fDarkStyle:
                    colorEnabled  = "#111"
                    colorDisabled = "#AAA"

            styleSheet = """
                QFrame#PluginWidget {
                    %s
                    background-repeat: repeat-xy;
                }
                QLabel#label_name,
                QLabel#label_audio_in,
                QLabel#label_audio_out,
                QLabel#label_midi,
                QLabel#label_presets       { color: %s; }
                QLabel#label_name:disabled { color: %s; }
            """ % (styleSheet2, colorEnabled, colorDisabled)

        styleSheet += """
            QComboBox#cb_presets,
            QComboBox#cb_presets0,
            QComboBox#cb_presets1,
            QLabel#label_audio_in,
            QLabel#label_audio_out,
            QLabel#label_midi { font-size: 10px; }
        """
        self.setStyleSheet(styleSheet)

        # -------------------------------------------------------------
        # Wet and Vol knobs on compacted slot

        # If "long" style not in "shorts" list, it will be matched to 0 ("default").
        skinNum = arrayIndex(skinListTweakable, self.fSkinStyle[: 3])
        skinName = skinListTweakable [skinNum]

        wetVolOnCompact = self.tweak(skinName, 'WetVolOnCompact', 0)
        showDisabled    = self.tweak(skinName, 'ShowDisabled',    0)
        showOutputs     = self.tweak(skinName, 'ShowOutputs',     0)
        shortenLabels   = self.tweak(skinName, 'ShortenLabels',   1)
        btn3state       = self.tweak(skinName, 'Button3Pos',      1)

        if isinstance(self, PluginSlot_Compact):
            if self.fPluginInfo['hints'] & PLUGIN_CAN_DRYWET or showDisabled:


                self.dial0 = ScalableDial(self, PARAMETER_DRYWET, 100, 1.0, 0.0, 1.0, "Dry/Wet", ScalableDial.CUSTOM_PAINT_MODE_CARLA_WET_MINI, -1, "%",  self.fSkinStyle, whiteLabels, self.fTweaks)
                self.dial0.setObjectName("dial0")
                self.ui.horizontalLayout_2.insertWidget(6, self.dial0)

                if wetVolOnCompact:
                    self.dial0.setEnabled(bool(self.fPluginInfo['hints'] & PLUGIN_CAN_DRYWET))
                    self.dial0.dragStateChanged.connect(self.slot_parameterDragStateChanged)
                    self.dial0.realValueChanged.connect(self.slot_dryWetChanged)
                    self.dial0.customContextMenuRequested.connect(self.slot_knobCustomMenu)
                    self.dial0.blockSignals(True)
                    self.dial0.setValue(self.host.get_internal_parameter_value(self.fPluginId, PARAMETER_DRYWET))
                    self.dial0.blockSignals(False)
                else:
                    self.dial0.hide()

            if self.fPluginInfo['hints'] & PLUGIN_CAN_VOLUME or showDisabled:
                # self.dial1 = ScalableDial(self.ui.dial1, PARAMETER_VOLUME, 254, 1.0, 0.0, 1.27, "Volume", ScalableDial.CUSTOM_PAINT_MODE_CARLA_VOL_MINI, 0, "%",  self.fSkinStyle, whiteLabels, self.fTweaks)
                self.dial1 = ScalableDial(self, PARAMETER_VOLUME, 127, 1.0, 0.0, 1.27, "Volume", ScalableDial.CUSTOM_PAINT_MODE_CARLA_VOL_MINI, -1, "%",  self.fSkinStyle, whiteLabels, self.fTweaks)
                self.dial1.setObjectName("dial1")
                self.ui.horizontalLayout_2.insertWidget(6, self.dial1)

                if wetVolOnCompact:
                    self.dial1.setEnabled(bool(self.fPluginInfo['hints'] & PLUGIN_CAN_VOLUME))
                    self.dial1.dragStateChanged.connect(self.slot_parameterDragStateChanged)
                    self.dial1.realValueChanged.connect(self.slot_volumeChanged)
                    self.dial1.customContextMenuRequested.connect(self.slot_knobCustomMenu)
                    self.dial1.blockSignals(True)
                    self.dial1.setValue(self.host.get_internal_parameter_value(self.fPluginId, PARAMETER_VOLUME))
                    self.dial1.blockSignals(False)
                else:
                    self.dial1.hide()

        # -------------------------------------------------------------
        # Set-up parameters

        if self.w_knobs_left is not None:
            parameterCount = self.host.get_parameter_count(self.fPluginId)

            index = 0
            layout = self.w_knobs_left.layout()

            # Rainbow paint, default is deep red -> green. Span can be negative.
            hueFrom = self.tweak(skinName, 'ColorFrom', -0.03)
            hueSpan = self.tweak(skinName, 'ColorSpan', 0.4)

            for i in range(parameterCount):
                # 50 should be enough for everybody, right?
                if index >= 50:
                    break

                paramInfo   = self.host.get_parameter_info(self.fPluginId, i)
                paramData   = self.host.get_parameter_data(self.fPluginId, i)
                paramRanges = self.host.get_parameter_ranges(self.fPluginId, i)
                default     = self.host.get_default_parameter_value(self.fPluginId, i)
                minimum     = paramRanges['min']
                maximum     = paramRanges['max']
                isEnabled   = (paramData['hints'] & PARAMETER_IS_ENABLED) != 0
                isOutput    = (paramData['type'] != PARAMETER_INPUT)
                isBoolean   = (paramData['hints'] & PARAMETER_IS_BOOLEAN) != 0
                isInteger   = ((paramData['hints'] & PARAMETER_IS_INTEGER) != 0) or isBoolean

                if paramInfo['name'].startswith("unused"):
                    print("Carla: INFO: Parameter "+str(i)+" is Unused, so skipped.")
                    continue

                if not isEnabled:
                    print("Carla: INFO: Parameter "+str(i)+" is Disabled.")
                    if not showDisabled:
                        continue

                delta = maximum - minimum
                if delta <= 0:
                    print("Carla: ERROR: Parameter "+str(i)+": Min, Max are same or wrong.")
                    return

                # NOTE: Booleans are mimic as isInteger with range [0 or 1].
                if btn3state:
                    isButton = (isInteger and (minimum == 0) and (maximum in (1, 2)))
                else:
                    isButton = (isInteger and (minimum == 0) and (maximum == 1))

                vuMeter = 0
                precision = 1
                if isOutput:
                    if not showOutputs:
                        continue
                    vuMeter = ((minimum == 0) and ((maximum == 1) or (maximum == 100)))\
                        or (minimum == -maximum) # from -N to N, is it good to use VU ?
                else:
                    # Integers have somewhat more coarse step
                    if isInteger:
                        while delta > 50:
                            delta = int(math.ceil(delta / 2))
                        precision = delta

                    # Floats are finer-step smoothed
                    else:
                        # Pretty steps for most common values, like 1-2-5-10 scales,
                        # still not in its final form.
                        while delta > 200:
                            # Mantissa is near 2.5
                            is25 = int(abs((log10(delta) % 1) - log10(2.5)) < 0.001)
                            delta = delta / (2.0 + is25 * 0.5)

                        while delta < 100:
                            # Mantissa is near 2.0
                            is25 = int(abs((log10(delta) % 1) - log10(2.0)) < 0.001)
                            delta = delta * (2.0 + is25 * 0.5)

                        precision = math.ceil(delta)

                if precision <= 0:   # suddenly...
                    print("Carla: ERROR: Parameter "+str(i)+": Precision "+str(precision)+" is wrong!")
                    return

                if shortenLabels:
                    label = getParameterShortName(paramInfo['name'])
                else:
                    label = paramInfo['name']

                widget = ScalableDial(self, i,
                                precision,
                                default,
                                minimum,
                                maximum,
                                label,
                                skinNum * 16,
                                self.fColorHint,
                                paramInfo['unit'],
                                self.fSkinStyle,
                                whiteLabels,
                                self.fTweaks,
                                isInteger,
                                isButton,
                                isOutput,
                                vuMeter,
                                1 )   # isVisible Experiment (index % 2)

                widget.setEnabled(isEnabled)

                widget.hide()

                scalePoints = []
                prefix = ""
                suffix = ""
                # NOTE: Issue #1983
                # if ((paramData['hints'] & PARAMETER_USES_SCALEPOINTS) != 0):
                count = paramInfo['scalePointCount']
                if count:
                    for j in range(count):
                        scalePoints.append(self.host.get_parameter_scalepoint_info(self.fPluginId, i, j))

                    prefix, suffix = getPrefixSuffix(paramInfo['unit'])
                    widget.setScalePPS(sorted(scalePoints, key=operator.itemgetter("value")), prefix, suffix)

                index += 1
                self.fParameterList.append([i, widget])
                layout.addWidget(widget)

            for i in range(index):
                widget = layout.itemAt(i).widget()
                if widget is not None:
                    coef = i/(index-1) if index > 1 else 0.5 # 0.5 = Midrange
                    hue = (hueFrom + coef * hueSpan) % 1.0
                    widget.setCustomPaintColor(QColor.fromHslF(hue, 1, 0.5, 1))


        if self.w_knobs_right is not None:
            if (self.fPluginInfo['hints'] & PLUGIN_CAN_DRYWET) != 0:
                widget = ScalableDial(self, PARAMETER_DRYWET, 100, 1.0, 0.0, 1.0, "Dry/Wet", skinNum * 16 + ScalableDial.CUSTOM_PAINT_MODE_CARLA_WET, -1, "%", self.fSkinStyle, whiteLabels, self.fTweaks)

                self.fParameterList.append([PARAMETER_DRYWET, widget])
                self.w_knobs_right.layout().addWidget(widget)

            if (self.fPluginInfo['hints'] & PLUGIN_CAN_VOLUME) != 0:
                widget = ScalableDial(self, PARAMETER_VOLUME, 127, 1.0, 0.0, 1.27, "Volume", skinNum * 16 + ScalableDial.CUSTOM_PAINT_MODE_CARLA_VOL, -1, "%", self.fSkinStyle, whiteLabels, self.fTweaks)

                self.fParameterList.append([PARAMETER_VOLUME, widget])
                self.w_knobs_right.layout().addWidget(widget)

            if (self.fPluginInfo['hints'] & PLUGIN_CAN_PANNING) != 0:
                if widget.getTweak('ShowPan', 0):
                    widget = ScalableDial(self, PARAMETER_PANNING, 100, 0.0, -1.0, 1.0, "Pan", skinNum * 16 + ScalableDial.CUSTOM_PAINT_MODE_CARLA_PAN, -1, "%", self.fSkinStyle, whiteLabels, self.fTweaks)

                    self.fParameterList.append([PARAMETER_PANNING, widget])
                    self.w_knobs_right.layout().addWidget(widget)

        for paramIndex, paramWidget in self.fParameterList:
            if not paramWidget.fIsOutput:
                paramWidget.customContextMenuRequested.connect(self.slot_knobCustomMenu)
                paramWidget.dragStateChanged.connect(self.slot_parameterDragStateChanged)
                paramWidget.realValueChanged.connect(self.slot_parameterValueChanged)
            paramWidget.blockSignals(True)
            paramWidget.setValue(self.host.get_internal_parameter_value(self.fPluginId, paramIndex))
            paramWidget.blockSignals(False)

        # -------------------------------------------------------------

        self.setWindowTitle(self.fPluginInfo['name'])

        if not self.fAdjustViewableKnobCountScheduled:
            self.fAdjustViewableKnobCountScheduled = True
            QTimer.singleShot(5, self.adjustViewableKnobCount)

    # -----------------------------------------------------------------

    def getFixedHeight(self):
        return 32

    def getHints(self):
        return self.fPluginInfo['hints']

    def getPluginId(self):
        return self.fPluginId

    # -----------------------------------------------------------------

    def setPluginId(self, idx):
        self.fPluginId = idx
        self.fEditDialog.setPluginId(idx)

    def setName(self, name):
        self.fPluginInfo['name'] = name
        self.fEditDialog.setName(name)

        if self.label_name is not None:
            self.label_name.setText(name)

    def setSelected(self, yesNo):
        if self.fIsSelected == yesNo:
            return

        self.fIsSelected = yesNo
        self.update()

    # -----------------------------------------------------------------

    def setActive(self, active, sendCallback=False, sendHost=True):
        self.fIsActive = active

        if sendCallback:
            self.fParameterIconTimer = ICON_STATE_ON
            self.activeChanged(active)

        if sendHost:
            self.host.set_active(self.fPluginId, active)

        if active:
            self.fEditDialog.clearNotes()
            self.midiActivityChanged(False)

        if self.label_name is not None:
            self.label_name.setEnabled(self.fIsActive)

    # called from rack, checks if param is possible first
    def setInternalParameter(self, parameterId, value):
        if parameterId <= PARAMETER_MAX or parameterId >= PARAMETER_NULL:
            return

        elif parameterId == PARAMETER_ACTIVE:
            return self.setActive(bool(value), True, True)

        elif parameterId == PARAMETER_DRYWET:
            if (self.fPluginInfo['hints'] & PLUGIN_CAN_DRYWET) == 0: return
            self.host.set_drywet(self.fPluginId, value)

        elif parameterId == PARAMETER_VOLUME:
            if (self.fPluginInfo['hints'] & PLUGIN_CAN_VOLUME) == 0: return
            self.host.set_volume(self.fPluginId, value)

        elif parameterId == PARAMETER_BALANCE_LEFT:
            if (self.fPluginInfo['hints'] & PLUGIN_CAN_BALANCE) == 0: return
            self.host.set_balance_left(self.fPluginId, value)

        elif parameterId == PARAMETER_BALANCE_RIGHT:
            if (self.fPluginInfo['hints'] & PLUGIN_CAN_BALANCE) == 0: return
            self.host.set_balance_right(self.fPluginId, value)

        elif parameterId == PARAMETER_PANNING:
            if (self.fPluginInfo['hints'] & PLUGIN_CAN_PANNING) == 0: return
            self.host.set_panning(self.fPluginId, value)

        elif parameterId == PARAMETER_CTRL_CHANNEL:
            self.host.set_ctrl_channel(self.fPluginId, value)

        self.setParameterValue(parameterId, value, True)
        self.fEditDialog.setParameterValue(parameterId, value)

    # -----------------------------------------------------------------

    def setParameterValue(self, parameterId, value, sendCallback):
        if parameterId == PARAMETER_ACTIVE:
            return self.setActive(bool(value), True, False)

        self.fEditDialog.setParameterValue(parameterId, value)

        if sendCallback:
            self.fParameterIconTimer = ICON_STATE_ON
            self.editDialogParameterValueChanged(self.fPluginId, parameterId, value)

    def setParameterDefault(self, parameterId, value):
        self.fEditDialog.setParameterDefault(parameterId, value)

    def setParameterMappedControlIndex(self, parameterId, control):
        self.fEditDialog.setParameterMappedControlIndex(parameterId, control)

    def setParameterMappedRange(self, parameterId, minimum, maximum):
        self.fEditDialog.setParameterMappedRange(parameterId, minimum, maximum)

    def setParameterMidiChannel(self, parameterId, channel):
        self.fEditDialog.setParameterMidiChannel(parameterId, channel)

    # -----------------------------------------------------------------

    def setProgram(self, index, sendCallback):
        self.fEditDialog.setProgram(index)

        if sendCallback:
            self.fParameterIconTimer = ICON_STATE_ON
            self.editDialogProgramChanged(self.fPluginId, index)

        self.updateParameterValues()

    def setMidiProgram(self, index, sendCallback):
        self.fEditDialog.setMidiProgram(index)

        if sendCallback:
            self.fParameterIconTimer = ICON_STATE_ON
            self.editDialogMidiProgramChanged(self.fPluginId, index)

        self.updateParameterValues()

    # -----------------------------------------------------------------

    def setOption(self, option, yesNo):
        self.fEditDialog.setOption(option, yesNo)

    # -----------------------------------------------------------------

    def showCustomUI(self):
        self.host.show_custom_ui(self.fPluginId, True)

        if self.b_gui is not None:
            self.b_gui.setChecked(True)

    def hideCustomUI(self):
        self.host.show_custom_ui(self.fPluginId, False)

        if self.b_gui is not None:
            self.b_gui.setChecked(False)

    def showEditDialog(self):
        self.fEditDialog.show()
        self.fEditDialog.activateWindow()

        if self.b_edit is not None:
            self.b_edit.setChecked(True)

    def showRenameDialog(self):
        oldName    = self.fPluginInfo['name']
        newNameTry = QInputDialog.getText(self, self.tr("Rename Plugin"), self.tr("New plugin name:"), QLineEdit.Normal, oldName)

        if not (newNameTry[1] and newNameTry[0] and oldName != newNameTry[0]):
            return

        newName = newNameTry[0]

        if not self.host.rename_plugin(self.fPluginId, newName):
            CustomMessageBox(self, QMessageBox.Warning, self.tr("Error"), self.tr("Operation failed"),
                                   self.host.get_last_error(), QMessageBox.Ok, QMessageBox.Ok)
            return

    def showReplaceDialog(self):
        data = gCarla.gui.showAddPluginDialog()

        if data is None:
            return

        btype, ptype, filename, label, uniqueId, extraPtr = data

        if not self.host.replace_plugin(self.fPluginId):
            CustomMessageBox(self, QMessageBox.Critical, self.tr("Error"), self.tr("Failed to replace plugin"), self.host.get_last_error(), QMessageBox.Ok, QMessageBox.Ok)
            return

        ok = self.host.add_plugin(btype, ptype, filename, None, label, uniqueId, extraPtr, PLUGIN_OPTIONS_NULL)

        self.host.replace_plugin(self.host.get_max_plugin_number())

        if not ok:
            CustomMessageBox(self, QMessageBox.Critical, self.tr("Error"), self.tr("Failed to load plugin"), self.host.get_last_error(), QMessageBox.Ok, QMessageBox.Ok)

    # -----------------------------------------------------------------

    def activeChanged(self, onOff):
        self.fIsActive = onOff

        if self.b_enable is None:
            return

        self.b_enable.blockSignals(True)
        self.b_enable.setChecked(onOff)
        self.b_enable.blockSignals(False)

    def customUiStateChanged(self, state):
        if self.b_gui is None:
            return

        self.b_gui.blockSignals(True)
        if state == 0:
            self.b_gui.setChecked(False)
            self.b_gui.setEnabled(True)
        elif state == 1:
            self.b_gui.setChecked(True)
            self.b_gui.setEnabled(True)
        elif state == -1:
            self.b_gui.setChecked(False)
            self.b_gui.setEnabled(False)
        self.b_gui.blockSignals(False)

    def parameterActivityChanged(self, onOff):
        if self.led_control is None:
            return

        self.led_control.setChecked(onOff)

    def midiActivityChanged(self, onOff):
        if self.led_midi is None:
            return

        self.led_midi.setChecked(onOff)

    def optionChanged(self, option, yesNo):
        pass

    # -----------------------------------------------------------------
    # PluginEdit callbacks

    def editDialogVisibilityChanged(self, pluginId, visible):
        if self.b_edit is None:
            return

        self.b_edit.blockSignals(True)
        self.b_edit.setChecked(visible)
        self.b_edit.blockSignals(False)

    def editDialogPluginHintsChanged(self, pluginId, hints):
        self.fPluginInfo['hints'] = hints

        for paramIndex, paramWidget in self.fParameterList:
            if paramIndex == PARAMETER_DRYWET:
                paramWidget.setVisible(hints & PLUGIN_CAN_DRYWET)
            elif paramIndex == PARAMETER_VOLUME:
                paramWidget.setVisible(hints & PLUGIN_CAN_VOLUME)
        # jpka: FIXME i add it, but can't trigger it for test, so disable to prevent possible crashes. Maybe it don't needed.
        # self.dial0.setVisible(hints & PLUGIN_CAN_DRYWET)
        # self.dial1.setVisible(hints & PLUGIN_CAN_VOLUME)
        # print("self.dial0.setVisible(hints & PLUGIN_CAN_DRYWET)")

        if self.b_gui is not None:
            self.b_gui.setEnabled(bool(hints & PLUGIN_HAS_CUSTOM_UI))

    # NOTE: self.fParameterList is empty when compacted.
    def editDialogParameterValueChanged(self, pluginId, parameterId, value):
        for paramIndex, paramWidget in self.fParameterList:
            if (paramIndex != parameterId) or paramWidget.fIsOutput:
                continue

            paramWidget.blockSignals(True)
            paramWidget.setValue(value)
            paramWidget.blockSignals(False)
            break

        if isinstance(self, PluginSlot_Compact):
            if (parameterId == PARAMETER_DRYWET) and (self.fPluginInfo['hints'] & PLUGIN_CAN_DRYWET):
                self.dial0.blockSignals(True)
                self.dial0.setValue(value)
                self.dial0.blockSignals(False)
            if (parameterId == PARAMETER_VOLUME) and (self.fPluginInfo['hints'] & PLUGIN_CAN_VOLUME):
                self.dial1.blockSignals(True)
                self.dial1.setValue(value)
                self.dial1.blockSignals(False)

    def editDialogProgramChanged(self, pluginId, index):
        if self.cb_presets is None:
            return

        self.cb_presets.blockSignals(True)
        self.cb_presets.setCurrentIndex(index)
        self.cb_presets.blockSignals(False)

        # FIXME
        self.updateParameterValues()

    def editDialogMidiProgramChanged(self, pluginId, index):
        if self.cb_presets is None:
            return

        self.cb_presets.blockSignals(True)
        self.cb_presets.setCurrentIndex(index)
        self.cb_presets.blockSignals(False)

        # FIXME
        self.updateParameterValues()

    def editDialogNotePressed(self, pluginId, note):
        pass

    def editDialogNoteReleased(self, pluginId, note):
        pass

    def editDialogMidiActivityChanged(self, pluginId, onOff):
        self.midiActivityChanged(onOff)

    # -----------------------------------------------------------------

    def idleFast(self):
        # Input peaks
        if self.fPeaksInputCount > 0:
            if self.fPeaksInputCount > 1:
                peak1 = self.host.get_input_peak_value(self.fPluginId, True)
                peak2 = self.host.get_input_peak_value(self.fPluginId, False)
                ledState = bool(peak1 != 0.0 or peak2 != 0.0)

                if self.peak_in is not None:
                    self.peak_in.displayMeter(1, peak1)
                    self.peak_in.displayMeter(2, peak2)

            else:
                peak = self.host.get_input_peak_value(self.fPluginId, True)
                ledState = bool(peak != 0.0)

                if self.peak_in is not None:
                    self.peak_in.displayMeter(1, peak)

            if self.fLastGreenLedState != ledState and self.led_audio_in is not None:
                self.fLastGreenLedState = ledState
                self.led_audio_in.setChecked(ledState)

        # Output peaks
        if self.fPeaksOutputCount > 0:
            if self.fPeaksOutputCount > 1:
                peak1 = self.host.get_output_peak_value(self.fPluginId, True)
                peak2 = self.host.get_output_peak_value(self.fPluginId, False)
                ledState = bool(peak1 != 0.0 or peak2 != 0.0)

                if self.peak_out is not None:
                    self.peak_out.displayMeter(1, peak1)
                    self.peak_out.displayMeter(2, peak2)

            else:
                peak = self.host.get_output_peak_value(self.fPluginId, True)
                ledState = bool(peak != 0.0)

                if self.peak_out is not None:
                    self.peak_out.displayMeter(1, peak)

            if self.fLastBlueLedState != ledState and self.led_audio_out is not None:
                self.fLastBlueLedState = ledState
                self.led_audio_out.setChecked(ledState)

    def idleSlow(self):
        if self.fParameterIconTimer == ICON_STATE_ON:
            self.parameterActivityChanged(True)
            self.fParameterIconTimer = ICON_STATE_WAIT

        elif self.fParameterIconTimer == ICON_STATE_WAIT:
            self.fParameterIconTimer = ICON_STATE_OFF

        elif self.fParameterIconTimer == ICON_STATE_OFF:
            self.parameterActivityChanged(False)
            self.fParameterIconTimer = ICON_STATE_NULL

        self.fEditDialog.idleSlow()

        # 7-seg displays are pretty effective, but added frame skip will make it even better.
        self.slowTimer = (self.slowTimer + 1) % 2  # Half the FPS, win some CPU.

        # NOTE: self.fParameterList is empty when compacted.
        for paramIndex, paramWidget in self.fParameterList:
            if not paramWidget.fIsOutput:
                continue
            # VU displays are CPU effective, make it run faster than 7-seg displays.
            # if (self.slowTimer > 0) and (not paramWidget.fIsVuOutput):
            if (self.slowTimer > 0):
                continue

            paramWidget.blockSignals(True) # TODO Is it required for output?
            value = self.host.get_current_parameter_value(self.fPluginId, paramIndex)
            paramWidget.setValue(value, False)
            paramWidget.blockSignals(False)

    # -----------------------------------------------------------------

    def drawOutline(self, painter):
        painter.save()
        painter.setBrush(Qt.transparent)
        w = float(self.width())
        h = float(self.height())

        painter.setPen(self.shadow_pen)
        painter.drawLine(QLineF(0.5, h-1, w-1, h-1))

        if self.fIsSelected:
            painter.setCompositionMode(QPainter.CompositionMode_Plus)

            painter.setPen(self.sel_pen)
            painter.drawRect(QRectF(0.5, 0.5, w-1, h-1))
            sidelines = [QLineF(1, 1, 1, h-1), QLineF(w-1, 1, w-1, h-1)]
            painter.setPen(self.sel_side_pen)
            painter.drawLines(sidelines)

            painter.setCompositionMode(QPainter.CompositionMode_SourceOver)

        painter.restore()

    def updateParameterValues(self):
        for paramIndex, paramWidget in self.fParameterList:
            if paramIndex < 0: # DryWet and Volume
                continue
            if paramWidget.fIsOutput:
                continue

            paramWidget.blockSignals(True)
            paramWidget.setValue(self.host.get_current_parameter_value(self.fPluginId, paramIndex))
            paramWidget.blockSignals(False)

    # -----------------------------------------------------------------

    @pyqtSlot(bool)
    def slot_enableClicked(self, yesNo):
        self.setActive(yesNo, False, True)

    @pyqtSlot()
    def slot_showCustomMenu(self):
        menu = QMenu(self)

        # -------------------------------------------------------------
        # Expand/Minimize and Tweaks

        actCompact = menu.addAction(self.tr("Expand") if isinstance(self, PluginSlot_Compact) else self.tr("Minimize"))
        actColor       = menu.addAction(self.tr("Change Color..."))
        actColorRandom = menu.addAction(self.tr("Random Color"))
        actSkin        = menu.addAction(self.tr("Change Skin..."))
        menu.addSeparator()

        # -------------------------------------------------------------
        # Find in patchbay, if possible

        if self.host.processMode in (ENGINE_PROCESS_MODE_MULTIPLE_CLIENTS,
                                     ENGINE_PROCESS_MODE_PATCHBAY):
            actFindInPatchbay = menu.addAction(self.tr("Find plugin in patchbay"))
            menu.addSeparator()

        else:
            actFindInPatchbay = None

        # -------------------------------------------------------------
        # Move up and down

        actMoveUp   = menu.addAction(self.tr("Move Up"))
        actMoveDown = menu.addAction(self.tr("Move Down"))

        if self.fPluginId == 0:
            actMoveUp.setEnabled(False)
        if self.fPluginId >= self.fParent.getPluginCount():
            actMoveDown.setEnabled(False)

        # -------------------------------------------------------------
        # Bypass and Enable/Disable

        actBypass = menu.addAction(self.tr("Bypass"))
        actEnable = menu.addAction(self.tr("Disable") if self.fIsActive else self.tr("Enable"))
        menu.addSeparator()

        if self.fPluginInfo['hints'] & PLUGIN_CAN_DRYWET:
            actBypass.setCheckable(True)
            actBypass.setChecked(self.host.get_internal_parameter_value(self.fPluginId, PARAMETER_DRYWET) == 0.0)
        else:
            actBypass.setVisible(False)

        # -------------------------------------------------------------
        # Reset and Randomize parameters

        actReset  = menu.addAction(self.tr("Reset parameters"))
        actRandom = menu.addAction(self.tr("Randomize parameters"))
        menu.addSeparator()

        # -------------------------------------------------------------
        # Edit and Show Custom UI

        actEdit = menu.addAction(self.tr("Edit"))
        actGui  = menu.addAction(self.tr("Show Custom UI"))
        menu.addSeparator()

        if self.b_edit is not None:
            actEdit.setCheckable(True)
            actEdit.setChecked(self.b_edit.isChecked())
        else:
            actEdit.setVisible(False)

        if self.b_gui is not None:
            actGui.setCheckable(True)
            actGui.setChecked(self.b_gui.isChecked())
            actGui.setEnabled(self.b_gui.isEnabled())
        else:
            actGui.setVisible(False)

        # -------------------------------------------------------------
        # Other stuff

        actClone   = menu.addAction(self.tr("Clone"))
        actRename  = menu.addAction(self.tr("Rename..."))
        actReplace = menu.addAction(self.tr("Replace..."))
        actRemove  = menu.addAction(self.tr("Remove"))

        if self.fIdleTimerId != 0:
            actRemove.setVisible(False)

        if self.host.exportLV2:
            menu.addSeparator()
            actExportLV2 = menu.addAction(self.tr("Export LV2..."))

        else:
            actExportLV2 = None

        # -------------------------------------------------------------
        # exec

        actSel = menu.exec_(QCursor.pos())

        if not actSel:
            return

        # -------------------------------------------------------------
        # Expand/Minimize

        elif actSel == actCompact:
            # FIXME
            gCarla.gui.compactPlugin(self.fPluginId)

        # -------------------------------------------------------------
        # Tweaks

        elif actSel == actColor:
            initial = QColor(self.fSkinColor[0], self.fSkinColor[1], self.fSkinColor[2])
            color   = QColorDialog.getColor(initial, self, self.tr("Change Color"), QColorDialog.DontUseNativeDialog)

            if not color.isValid():
                return

            color    = color.getRgb()[0:3]
            colorStr = "%i;%i;%i" % color
            gCarla.gui.changePluginColor(self.fPluginId, color, colorStr)

        elif actSel == actColorRandom:
            hue = QColor(self.fSkinColor[0], self.fSkinColor[1], self.fSkinColor[2]).hueF()
            color    = QColor.fromHslF((hue + random.random()*0.5 + 0.25) % 1.0, 0.25, 0.125, 1).getRgb()[0:3]
            colorStr = "%i;%i;%i" % color
            gCarla.gui.changePluginColor(self.fPluginId, color, colorStr)

        elif actSel == actSkin:
            skin = QInputDialog.getItem(self, self.tr("Change Skin"),
                                              self.tr("Change Skin to:"),
                                              skinList, arrayIndex(skinList, self.fSkinStyle), False)

            if not all(skin):
                return
            gCarla.gui.changePluginSkin(self.fPluginId, skin[0])

        # -------------------------------------------------------------
        # Find in patchbay

        elif actSel == actFindInPatchbay:
            gCarla.gui.findPluginInPatchbay(self.fPluginId)

        # -------------------------------------------------------------
        # Move up and down

        elif actSel == actMoveUp:
            gCarla.gui.switchPlugins(self.fPluginId, self.fPluginId-1)

        elif actSel == actMoveDown:
            gCarla.gui.switchPlugins(self.fPluginId, self.fPluginId+1)

        # -------------------------------------------------------------
        # Bypass and Enable/Disable

        elif actSel == actBypass:
            value = 0.0 if actBypass.isChecked() else 1.0
            self.host.set_drywet(self.fPluginId, value)
            self.setParameterValue(PARAMETER_DRYWET, value, True)

        elif actSel == actEnable:
            self.setActive(not self.fIsActive, True, True)

        # -------------------------------------------------------------
        # Reset and Randomize parameters

        elif actSel == actReset:
            self.host.reset_parameters(self.fPluginId)

        elif actSel == actRandom:
            self.host.randomize_parameters(self.fPluginId)

        # -------------------------------------------------------------
        # Edit and Show Custom UI

        elif actSel == actEdit:
            self.b_edit.click()

        elif actSel == actGui:
            self.b_gui.click()

        # -------------------------------------------------------------
        # Clone

        elif actSel == actClone:
            if not self.host.clone_plugin(self.fPluginId):
                CustomMessageBox(self, QMessageBox.Warning, self.tr("Error"), self.tr("Operation failed"),
                                       self.host.get_last_error(), QMessageBox.Ok, QMessageBox.Ok)

        # -------------------------------------------------------------
        # Rename

        elif actSel == actRename:
            self.showRenameDialog()

        # -------------------------------------------------------------
        # Replace

        elif actSel == actReplace:
            self.showReplaceDialog()

        # -------------------------------------------------------------
        # Remove

        elif actSel == actRemove:
            if not self.host.remove_plugin(self.fPluginId):
                CustomMessageBox(self, QMessageBox.Warning, self.tr("Error"), self.tr("Operation failed"),
                                       self.host.get_last_error(), QMessageBox.Ok, QMessageBox.Ok)

        # -------------------------------------------------------------
        # Export LV2

        elif actSel == actExportLV2:
            filepath = QInputDialog.getItem(self, self.tr("Export LV2 Plugin"),
                                                  self.tr("Select LV2 Path where plugin will be exported to:"),
                                                  CARLA_DEFAULT_LV2_PATH, editable=False)
            if not all(filepath):
                return

            plugname = self.fPluginInfo['name']
            filepath = os.path.join(filepath[0], plugname.replace(" ","_"))

            if not filepath.endswith(".lv2"):
                filepath += ".lv2"

            if os.path.exists(filepath):
                if QMessageBox.question(self, self.tr("Export to LV2"),
                                              self.tr("Plugin bundle already exists, overwrite?")) == QMessageBox.Ok:
                    return

            if not self.host.export_plugin_lv2(self.fPluginId, filepath):
                return CustomMessageBox(self, QMessageBox.Warning, self.tr("Error"), self.tr("Operation failed"),
                                              self.host.get_last_error(), QMessageBox.Ok, QMessageBox.Ok)

            QMessageBox.information(self, self.tr("Plugin exported"),
                                          self.tr("Plugin exported successfully, saved in folder:\n%s" % filepath))

        # -------------------------------------------------------------

    @pyqtSlot()
    def slot_knobCustomMenu(self):
        PluginEdit.slot_knobCustomMenu(self)

    # -----------------------------------------------------------------

    @pyqtSlot(bool)
    def slot_showCustomUi(self, show):
        self.host.show_custom_ui(self.fPluginId, show)

    @pyqtSlot(bool)
    def slot_showEditDialog(self, show):
        self.fEditDialog.setVisible(show)

    @pyqtSlot()
    def slot_removePlugin(self):
        if not self.host.remove_plugin(self.fPluginId):
            CustomMessageBox(self, QMessageBox.Warning, self.tr("Error"), self.tr("Operation failed"),
                                    self.host.get_last_error(), QMessageBox.Ok, QMessageBox.Ok)

    # -----------------------------------------------------------------

    @pyqtSlot(bool)
    def slot_parameterDragStateChanged(self, touch):
        index = self.sender().getIndex()

        if index >= 0:
            self.host.set_parameter_touch(self.fPluginId, index, touch)

    @pyqtSlot(float)
    def slot_parameterValueChanged(self, value):
        index = self.sender().getIndex()

        if index < 0:
            self.setInternalParameter(index, value)
        else:
            self.host.set_parameter_value(self.fPluginId, index, value)
            self.setParameterValue(index, value, False)

    @pyqtSlot(int)
    def slot_programChanged(self, index):
        self.host.set_program(self.fPluginId, index)
        self.setProgram(index, False)

    @pyqtSlot(int)
    def slot_midiProgramChanged(self, index):
        self.host.set_midi_program(self.fPluginId, index)
        self.setMidiProgram(index, False)

    # -----------------------------------------------------------------

    def adjustViewableKnobCount(self):
        if self.w_knobs_left is None or self.spacer_knobs is None:
            return

        curWidth = 2
        maxWidth = self.w_knobs_left.width() + self.spacer_knobs.geometry().width() + 2

        plen = len(self.fParameterList)
        for i in range(plen):
            index, widget = self.fParameterList[i]
            if index < 0:
                break

            if not widget.getIsVisible():
                continue

            curWidth += widget.width() + RACK_KNOB_GAP

            if self.fTweaks.get('MoreSpace', 0):
                if self.w_knobs_right is None: # calf
                    limit = curWidth
                else:
                    if QT_VERSION < 0x60000:
                        limit = curWidth + self.w_knobs_right.getContentsMargins()[0] + 8
                    else:
                        limit = curWidth + 4 + 8
            else:
                limit = curWidth + 56 + 8

            if limit < maxWidth:
                #if not widget.isVisible():
                widget.show()
                continue

            for i2 in range(i, plen):
                index2, widget2 = self.fParameterList[i2]
                if index2 < 0:
                    break
                #if widget2.isVisible():
                widget2.hide()

            break

        self.fAdjustViewableKnobCountScheduled = False

    def testTimer(self):
        self.fIdleTimerId = self.startTimer(25)

    # -----------------------------------------------------------------

    def mouseDoubleClickEvent(self, event):
        QFrame.mouseDoubleClickEvent(self, event)

        # FIXME
        gCarla.gui.compactPlugin(self.fPluginId)

    def closeEvent(self, event):
        if self.fIdleTimerId != 0:
            self.killTimer(self.fIdleTimerId)
            self.fIdleTimerId = 0

            self.host.engine_close()

        QFrame.closeEvent(self, event)

    def resizeEvent(self, event):
        if not self.fAdjustViewableKnobCountScheduled:
            self.fAdjustViewableKnobCountScheduled = True
            QTimer.singleShot(100, self.adjustViewableKnobCount)
        QFrame.resizeEvent(self, event)

    def timerEvent(self, event):
        if event.timerId() == self.fIdleTimerId:
            self.host.engine_idle()
            self.idleFast()
            self.idleSlow()

        QFrame.timerEvent(self, event)

    def paintEvent(self, event):
        painter = QPainter(self)

        # Colorization
        if self.fSkinColor != (0,0,0):
            painter.setCompositionMode(QPainter.CompositionMode_Multiply)
            r,g,b = self.fSkinColor
            painter.setBrush(QColor(r,g,b))
            painter.setPen(Qt.NoPen)
            painter.drawRect(QRectF(0,0,self.width(),self.height()))
            painter.setCompositionMode(QPainter.CompositionMode_SourceOver)

        self.drawOutline(painter)
        QFrame.paintEvent(self, event)

# ------------------------------------------------------------------------------------------------------------

class PluginSlot_Calf(AbstractPluginSlot):
    def __init__(self, parent, host, pluginId, skinColor, skinStyle):
        AbstractPluginSlot.__init__(self, parent, host, pluginId, skinColor, skinStyle)
        self.ui = ui_carla_plugin_calf.Ui_PluginWidget()
        self.ui.setupUi(self)

        audioCount = self.host.get_audio_port_count_info(self.fPluginId)
        midiCount  = self.host.get_midi_port_count_info(self.fPluginId)

        # -------------------------------------------------------------
        # Internal stuff

        self.fButtonFont = self.ui.b_gui.font()
        self.fButtonFont.setBold(False)
        self.fButtonFont.setPixelSize(10)

        self.fButtonColorOn  = QColor( 18,  41,  87)
        self.fButtonColorOff = QColor(150, 150, 150)

        # -------------------------------------------------------------
        # Set-up GUI

        self.ui.label_active.setFont(self.fButtonFont)

        self.ui.b_remove.setPixmaps(":/bitmaps/button_calf1.png",
                                    ":/bitmaps/button_calf1_down.png",
                                    ":/bitmaps/button_calf1_hover.png")

        self.ui.b_edit.setTopText(self.tr("Edit"), self.fButtonColorOn, self.fButtonFont)
        self.ui.b_remove.setTopText(self.tr("Remove"), self.fButtonColorOn, self.fButtonFont)

        if self.fPluginInfo['hints'] & PLUGIN_HAS_CUSTOM_UI:
            self.ui.b_gui.setTopText(self.tr("GUI"), self.fButtonColorOn, self.fButtonFont)
        else:
            self.ui.b_gui.setTopText(self.tr("GUI"), self.fButtonColorOff, self.fButtonFont)

        if audioCount['ins'] == 0:
            self.ui.label_audio_in.hide()

        if audioCount['outs'] == 0:
            self.ui.label_audio_out.hide()

        if midiCount['ins'] == 0:
            self.ui.label_midi.hide()
            self.ui.led_midi.hide()

        if self.fIdleTimerId != 0:
            self.ui.b_remove.setEnabled(False)
            self.ui.b_remove.setVisible(False)

        # -------------------------------------------------------------

        self.b_enable = self.ui.b_enable
        self.b_gui    = self.ui.b_gui
        self.b_edit   = self.ui.b_edit
        self.b_remove = self.ui.b_remove

        self.label_name = self.ui.label_name
        self.led_midi   = self.ui.led_midi

        self.peak_in  = self.ui.peak_in
        self.peak_out = self.ui.peak_out

        self.w_knobs_left = self.ui.w_knobs
        self.spacer_knobs = self.ui.layout_bottom.itemAt(1).spacerItem()

        self.ready()

        self.ui.led_midi.setColor(self.ui.led_midi.CALF)

    # -----------------------------------------------------------------

    def getFixedHeight(self):
        return 94 if max(self.peak_in.channelCount(), self.peak_out.channelCount()) < 2 else 106

    # -----------------------------------------------------------------

    def editDialogPluginHintsChanged(self, pluginId, hints):
        if hints & PLUGIN_HAS_CUSTOM_UI:
            self.ui.b_gui.setTopText(self.tr("GUI"), self.fButtonColorOn, self.fButtonFont)
        else:
            self.ui.b_gui.setTopText(self.tr("GUI"), self.fButtonColorOff, self.fButtonFont)

        AbstractPluginSlot.editDialogPluginHintsChanged(self, pluginId, hints)

    # -----------------------------------------------------------------

    def paintEvent(self, event):
        isBlack = bool(self.fSkinStyle == "calf_black")

        painter = QPainter(self)
        painter.setBrush(Qt.transparent)

        painter.setPen(QPen(QColor(20, 20, 20) if isBlack else QColor(75, 86, 99), 1))
        painter.drawRect(0, 1, self.width()-1, self.height()-3)

        painter.setPen(QPen(QColor(45, 45, 45) if isBlack else QColor(86, 99, 114), 1))
        painter.drawLine(0, 0, self.width(), 0)

        AbstractPluginSlot.paintEvent(self, event)

# ------------------------------------------------------------------------------------------------------------

class PluginSlot_Classic(AbstractPluginSlot):
    def __init__(self, parent, host, pluginId):
        AbstractPluginSlot.__init__(self, parent, host, pluginId, (0,0,0), "classic")
        self.ui = ui_carla_plugin_classic.Ui_PluginWidget()
        self.ui.setupUi(self)

        # -------------------------------------------------------------
        # Internal stuff

        self.fColorTop    = QColor(60, 60, 60)
        self.fColorBottom = QColor(47, 47, 47)
        self.fColorSeprtr = QColor(70, 70, 70)

        # -------------------------------------------------------------

        self.b_enable = self.ui.b_enable
        self.b_gui    = self.ui.b_gui
        self.b_edit   = self.ui.b_edit

        self.label_name    = self.ui.label_name
        self.led_control   = self.ui.led_control
        self.led_midi      = self.ui.led_midi
        self.led_audio_in  = self.ui.led_audio_in
        self.led_audio_out = self.ui.led_audio_out

        self.peak_in  = self.ui.peak_in
        self.peak_out = self.ui.peak_out

        self.ready()

    # -----------------------------------------------------------------

    def getFixedHeight(self):
        return 36

    # -----------------------------------------------------------------

    def paintEvent(self, event):
        painter = QPainter(self)
        painter.save()

        areaX  = self.ui.area_right.x()+7
        width  = self.width()
        height = self.height()

        painter.setPen(QPen(QColor(17, 17, 17), 1))
        painter.setBrush(QColor(17, 17, 17))
        painter.drawRect(0, 0, width, height)

        painter.setPen(self.fColorSeprtr.lighter(110))
        painter.setBrush(self.fColorBottom)
        painter.setRenderHint(QPainter.Antialiasing, True)

        # name -> leds arc
        path = QPainterPath()
        path.moveTo(areaX-20, height-4)
        path.cubicTo(areaX, height-5, areaX-20, 4.75, areaX, 4.75)
        path.lineTo(areaX, height-5)
        painter.drawPath(path)

        painter.setPen(self.fColorSeprtr)
        painter.setRenderHint(QPainter.Antialiasing, False)

        # separator lines
        painter.drawLine(0, height-5, areaX-20, height-5)
        painter.drawLine(areaX, 4, width, 4)

        painter.setPen(self.fColorBottom)
        painter.setBrush(self.fColorBottom)

        # top, bottom and left lines
        painter.drawLine(0, 0, width, 0)
        painter.drawRect(0, height-4, areaX, 4)
        painter.drawRoundedRect(areaX-20, height-5, areaX, 5, 22, 22)
        painter.drawLine(0, 0, 0, height)

        # fill the rest
        painter.drawRect(areaX-1, 5, width, height)

        # bottom 1px line
        painter.setPen(self.fColorSeprtr)
        painter.drawLine(0, height-1, width, height-1)

        painter.restore()
        AbstractPluginSlot.paintEvent(self, event)

# ------------------------------------------------------------------------------------------------------------

class PluginSlot_Compact(AbstractPluginSlot):
    def __init__(self, parent, host, pluginId, skinColor, skinStyle):
        AbstractPluginSlot.__init__(self, parent, host, pluginId, skinColor, skinStyle)
        self.ui = ui_carla_plugin_compact.Ui_PluginWidget()
        self.ui.setupUi(self)

        self.b_enable = self.ui.b_enable
        self.b_gui    = self.ui.b_gui
        self.b_edit   = self.ui.b_edit

        self.label_name = self.ui.label_name

        self.led_control   = self.ui.led_control
        self.led_midi      = self.ui.led_midi
        self.led_audio_in  = self.ui.led_audio_in
        self.led_audio_out = self.ui.led_audio_out

        self.peak_in  = self.ui.peak_in
        self.peak_out = self.ui.peak_out

        if self.fTweaks.get('ShowProgramsOnCompact', 0):
            insertProgramList(self, self.ui.layout_peaks, 0)

        if self.fTweaks.get('ShowMidiProgramsOnCompact', 0):
            insertMidiProgramList(self, self.ui.layout_peaks, 0)

        self.ready()

    # -----------------------------------------------------------------

    def getFixedHeight(self):
        if self.fSkinStyle == "calf_blue":
            return 36
        return 30

# ------------------------------------------------------------------------------------------------------------

class PluginSlot_Default(AbstractPluginSlot):
    def __init__(self, parent, host, pluginId, skinColor, skinStyle):
        AbstractPluginSlot.__init__(self, parent, host, pluginId, skinColor, skinStyle)
        self.ui = ui_carla_plugin_default.Ui_PluginWidget()
        self.ui.setupUi(self)

        # -------------------------------------------------------------

        self.b_enable = self.ui.b_enable
        self.b_gui    = self.ui.b_gui
        self.b_edit   = self.ui.b_edit

        self.label_name = self.ui.label_name

        self.led_control   = self.ui.led_control
        self.led_midi      = self.ui.led_midi
        self.led_audio_in  = self.ui.led_audio_in
        self.led_audio_out = self.ui.led_audio_out

        self.peak_in  = self.ui.peak_in
        self.peak_out = self.ui.peak_out

        self.w_knobs_left  = self.ui.w_knobs_left
        self.w_knobs_right = self.ui.w_knobs_right
        self.spacer_knobs  = self.ui.layout_bottom.itemAt(1).spacerItem()

        if self.fTweaks.get('MoreSpace', 0):
            self.ui.layout_bottom.setContentsMargins(0, 4, 0, 0)

        if self.fTweaks.get('ShowPrograms', 0):
            # insertProgramList(self, self.ui.layout_top, 6)
            insertProgramList(self, self.ui.layout_peaks, 0)

        if self.fTweaks.get('ShowMidiPrograms', 0):
            # insertMidiProgramList(self, self.ui.layout_top, 6)
            insertMidiProgramList(self, self.ui.layout_peaks, 0)

        self.ready()

    # -----------------------------------------------------------------

    def getFixedHeight(self):
        if self.fSkinStyle == "tube":
            return 98
        return 80

    # -----------------------------------------------------------------

    def paintEvent(self, event):
        painter = QPainter(self)
        painter.setBrush(Qt.transparent)

        painter.setPen(QPen(QColor(42, 42, 42), 1))
        painter.drawRect(0, 1, self.width()-1, self.getFixedHeight()-3)

        painter.setPen(QPen(QColor(60, 60, 60), 1))
        painter.drawLine(0, 0, self.width(), 0)

        AbstractPluginSlot.paintEvent(self, event)

# ------------------------------------------------------------------------------------------------------------

class PluginSlot_Presets(AbstractPluginSlot):
    def __init__(self, parent, host, pluginId, skinColor, skinStyle):
        AbstractPluginSlot.__init__(self, parent, host, pluginId, skinColor, skinStyle)
        self.ui = ui_carla_plugin_presets.Ui_PluginWidget()
        self.ui.setupUi(self)

        usingMidiPrograms = bool(skinStyle != "presets")

        # -------------------------------------------------------------
        # Set-up programs

        if usingMidiPrograms:
            programCount = self.host.get_midi_program_count(self.fPluginId)
        else:
            programCount = self.host.get_program_count(self.fPluginId)

        if programCount > 0:
            self.ui.cb_presets.setEnabled(True)
            self.ui.label_presets.setEnabled(True)

            for i in range(programCount):
                if usingMidiPrograms:
                    progName = self.host.get_midi_program_data(self.fPluginId, i)['name']
                else:
                    progName = self.host.get_program_name(self.fPluginId, i)

                self.ui.cb_presets.addItem(progName)

            if usingMidiPrograms:
                curProg = self.host.get_current_midi_program_index(self.fPluginId)
            else:
                curProg = self.host.get_current_program_index(self.fPluginId)

            self.ui.cb_presets.setCurrentIndex(curProg)

        else:
            self.ui.cb_presets.setEnabled(False)
            self.ui.cb_presets.setVisible(False)
            self.ui.label_presets.setEnabled(False)
            self.ui.label_presets.setVisible(False)

        # -------------------------------------------------------------

        self.b_enable = self.ui.b_enable
        self.b_gui    = self.ui.b_gui
        self.b_edit   = self.ui.b_edit

        self.cb_presets = self.ui.cb_presets

        self.label_name    = self.ui.label_name
        self.label_presets = self.ui.label_presets

        self.led_control   = self.ui.led_control
        self.led_midi      = self.ui.led_midi
        self.led_audio_in  = self.ui.led_audio_in
        self.led_audio_out = self.ui.led_audio_out

        self.peak_in  = self.ui.peak_in
        self.peak_out = self.ui.peak_out

        # if skinStyle == "zynfx": # TODO jpka: TEST ing zynfx as normal tweakable skin
        if False:
            self.setupZynFxParams()
        else:
            self.w_knobs_left  = self.ui.w_knobs_left
            self.w_knobs_right = self.ui.w_knobs_right
            self.spacer_knobs  = self.ui.layout_bottom.itemAt(1).spacerItem()

        if self.fTweaks.get('MoreSpace', 0):
            self.ui.layout_bottom.setContentsMargins(0, 4, 0, 0)

        self.ready()

        if usingMidiPrograms:
            self.ui.cb_presets.currentIndexChanged.connect(self.slot_midiProgramChanged)
        else:
            self.ui.cb_presets.currentIndexChanged.connect(self.slot_programChanged)

        # -------------------------------------------------------------

    # it works only for internal zyn builds, which are disabled by default
    # (?) not for just manual "zynfx" skin selection
    def setupZynFxParams(self):
        parameterCount = min(self.host.get_parameter_count(self.fPluginId), 8)

        for i in range(parameterCount):
            paramInfo   = self.host.get_parameter_info(self.fPluginId, i)
            paramData   = self.host.get_parameter_data(self.fPluginId, i)
            paramRanges = self.host.get_parameter_ranges(self.fPluginId, i)

            if paramData['type'] != PARAMETER_INPUT:
                continue
            if paramData['hints'] & PARAMETER_IS_BOOLEAN:
                continue
            if (paramData['hints'] & PARAMETER_IS_ENABLED) == 0:
                continue

            paramName = paramInfo['name']

            if paramName.startswith("unused"):
                continue

            # real zyn fx plugins
            if self.fPluginInfo['label'] == "zynalienwah":
                if   i == 0: paramName = "Freq"
                elif i == 1: paramName = "Rnd"
                elif i == 2: paramName = "L type" # combobox
                elif i == 3: paramName = "St.df"
                elif i == 5: paramName = "Fb"
                elif i == 7: paramName = "L/R"

            elif self.fPluginInfo['label'] == "zynchorus":
                if   i == 0: paramName = "Freq"
                elif i == 1: paramName = "Rnd"
                elif i == 2: paramName = "L type" # combobox
                elif i == 3: paramName = "St.df"
                elif i == 6: paramName = "Fb"
                elif i == 7: paramName = "L/R"
                elif i == 8: paramName = "Flngr" # button
                elif i == 9: paramName = "Subst" # button

            elif self.fPluginInfo['label'] == "zyndistortion":
                if   i == 0: paramName = "LRc."
                elif i == 4: paramName = "Neg." # button
                elif i == 5: paramName = "LPF"
                elif i == 6: paramName = "HPF"
                elif i == 7: paramName = "St." # button
                elif i == 8: paramName = "PF"  # button

            elif self.fPluginInfo['label'] == "zyndynamicfilter":
                if   i == 0: paramName = "Freq"
                elif i == 1: paramName = "Rnd"
                elif i == 2: paramName = "L type" # combobox
                elif i == 3: paramName = "St.df"
                elif i == 4: paramName = "LfoD"
                elif i == 5: paramName = "A.S."
                elif i == 6: paramName = "A.Inv." # button
                elif i == 7: paramName = "A.M."

            elif self.fPluginInfo['label'] == "zynecho":
                if   i == 1: paramName = "LRdl."
                elif i == 2: paramName = "LRc."
                elif i == 3: paramName = "Fb."
                elif i == 4: paramName = "Damp"

            elif self.fPluginInfo['label'] == "zynphaser":
                if   i ==  0: paramName = "Freq"
                elif i ==  1: paramName = "Rnd"
                elif i ==  2: paramName = "L type" # combobox
                elif i ==  3: paramName = "St.df"
                elif i ==  5: paramName = "Fb"
                elif i ==  7: paramName = "L/R"
                elif i ==  8: paramName = "Subst" # button
                elif i ==  9: paramName = "Phase"
                elif i == 11: paramName = "Dist"

            elif self.fPluginInfo['label'] == "zynreverb":
                if   i ==  2: paramName = "I.delfb"
                elif i ==  5: paramName = "LPF"
                elif i ==  6: paramName = "HPF"
                elif i ==  9: paramName = "R.S."
                elif i == 10: paramName = "I.del"

            else:
                paramName = getParameterShortName(paramName)

            widget = ScalableDial(self, i)

            widget.setLabel(paramName)
            widget.setMinimum(paramRanges['min'])
            widget.setMaximum(paramRanges['max'])
            widget.setImage(3)
            widget.setCustomPaintColor(QColor(83, 173, 10))
            widget.setCustomPaintMode(ScalableDial.CUSTOM_PAINT_MODE_COLOR)
            widget.forceWhiteLabelGradientText()
            widget.hide()

            if (paramData['hints'] & PARAMETER_IS_ENABLED) == 0:
                widget.setEnabled(False)

            self.fParameterList.append([i, widget])
            self.ui.w_knobs_left.layout().addWidget(widget)

        if self.fPluginInfo['hints'] & PLUGIN_CAN_DRYWET:
            widget = ScalableDial(self, PARAMETER_DRYWET)
            widget.setLabel("Wet")
            widget.setMinimum(0.0)
            widget.setMaximum(1.0)
            widget.setImage(3)
            widget.setCustomPaintMode(ScalableDial.CUSTOM_PAINT_MODE_CARLA_WET)
            widget.forceWhiteLabelGradientText()

            self.fParameterList.append([PARAMETER_DRYWET, widget])
            self.ui.w_knobs_right.layout().addWidget(widget)

        if self.fPluginInfo['hints'] & PLUGIN_CAN_VOLUME:
            widget = ScalableDial(self, PARAMETER_VOLUME)
            widget.setLabel("Volume")
            widget.setMinimum(0.0)
            widget.setMaximum(1.27)
            widget.setImage(3)
            widget.setCustomPaintMode(ScalableDial.CUSTOM_PAINT_MODE_CARLA_VOL)
            widget.forceWhiteLabelGradientText()

            self.fParameterList.append([PARAMETER_VOLUME, widget])
            self.ui.w_knobs_right.layout().addWidget(widget)

    # -----------------------------------------------------------------

    def getFixedHeight(self):
        return 80

    # -----------------------------------------------------------------

    def paintEvent(self, event):
        painter = QPainter(self)
        painter.setBrush(Qt.transparent)

        painter.setPen(QPen(QColor(50, 50, 50), 1))
        painter.drawRect(0, 1, self.width()-1, self.height()-3)

        painter.setPen(QPen(QColor(64, 64, 64), 1))
        painter.drawLine(0, 0, self.width(), 0)

        AbstractPluginSlot.paintEvent(self, event)

# ------------------------------------------------------------------------------------------------------------

def insertProgramList(self, layout, index):
    count = self.host.get_program_count(self.fPluginId)
    if count:
        cb = QComboBox(None)
        cb.setObjectName("cb_presets0") # use this stylesheet

        for i in range(count):
            string = self.host.get_program_name(self.fPluginId, i)

            if len(string) == 0:
                print("Carla: WARNING: Program List have zero length item.")
                return

            cb.addItem(string)

        layout.insertWidget(index, cb)
        cb.setCurrentIndex(self.host.get_current_program_index(self.fPluginId))
        cb.currentIndexChanged.connect(self.slot_programChanged)

def insertMidiProgramList(self, layout, index):
    count = self.host.get_midi_program_count(self.fPluginId)
    if count:
        cb = QComboBox(None)
        cb.setObjectName("cb_presets1") # use this stylesheet

        for i in range(count):
            string = self.host.get_midi_program_data(self.fPluginId, i)['name']

            if len(string) == 0:
                print("Carla: WARNING: MIDI Program List have zero length item.")
                return

            cb.addItem(string)

        layout.insertWidget(index, cb)
        cb.setCurrentIndex(self.host.get_current_midi_program_index(self.fPluginId))
        cb.currentIndexChanged.connect(self.slot_midiProgramChanged)

# ------------------------------------------------------------------------------------------------------------

def getColorAndSkinStyle(host, pluginId):
    pluginInfo  = host.get_plugin_info(pluginId)
    pluginName  = host.get_real_plugin_name(pluginId)
    pluginLabel = pluginInfo['label'].lower()
    pluginMaker = pluginInfo['maker']
    uniqueId    = pluginInfo['uniqueId']

    if pluginInfo['type'] in (PLUGIN_VST2, PLUGIN_VST3, PLUGIN_AU):
        progCount = host.get_program_count(pluginId)
    else:
        progCount = host.get_midi_program_count(pluginId)

    colorCategory = getColorFromCategory(pluginInfo['category'])
    colorNone     = (0,0,0)

    # Samplers
    if pluginInfo['type'] == PLUGIN_SF2:
        return (colorCategory, "mpresets")
    if pluginInfo['type'] == PLUGIN_SFZ:
        return (colorCategory, "mpresets")

    # Calf
    if pluginName.split(" ", 1)[0].lower() == "calf":
        return (colorNone, "calf_black" if "mono" in pluginLabel else "calf_blue")

    # OpenAV
    if pluginMaker == "OpenAV Productions":
        return (colorNone, "openav-old")
    if pluginMaker == "OpenAV":
        return (colorNone, "openav")

    # Tube
    if "tube" in pluginLabel:
        return (colorCategory, "tube")

    # ZynFX
    if pluginInfo['type'] == PLUGIN_INTERNAL:
        if pluginLabel.startswith("zyn") and pluginInfo['category'] != PLUGIN_CATEGORY_SYNTH:
            return (colorNone, "zynfx")

    if pluginInfo['type'] == PLUGIN_LADSPA:
        if pluginLabel.startswith("zyn") and pluginMaker.startswith("Josep Andreu"):
            return (colorNone, "zynfx")

    if pluginInfo['type'] == PLUGIN_LV2:
        # if pluginLabel.startswith("http://kxstudio.sf.net/carla/plugins/zyn") and pluginName != "ZynAddSubFX":
        if pluginLabel.startswith("http://kxstudio.sf.net/carla/plugins/zyn") and pluginName != "ZynAddSubFX" or "zyn" in pluginLabel: # jpka: TEST ing zynfx as normal tweakable skin
            return (colorNone, "zynfx")

    # Presets
    if progCount > 1 and (pluginInfo['hints'] & PLUGIN_USES_MULTI_PROGS) == 0:
        if pluginInfo['type'] in (PLUGIN_VST2, PLUGIN_VST3, PLUGIN_AU):
            return (colorCategory, "presets")
        return (colorCategory, "mpresets")

    # DISTRHO Plugins (needs to be last)
    if pluginMaker.startswith("falkTX, ") or pluginMaker == "DISTRHO" or pluginLabel.startswith("http://distrho.sf.net/plugins/"):
        skinStyle = pluginLabel.replace("http://distrho.sf.net/plugins/","")
        if skinStyle in ("3bandeq", "nekobi"):
            return (colorNone, skinStyle)

    return (colorCategory, "default")

def createPluginSlot(parent, host, pluginId, options):
    skinColor, skinStyle = getColorAndSkinStyle(host, pluginId)

    if options['color'] is not None:
        skinColor = options['color']

    if options['skin']:
        skinStyle = options['skin']

    if skinStyle == "classic":
        return PluginSlot_Classic(parent, host, pluginId)

    if "compact" in skinStyle or options['compact']:
        return PluginSlot_Compact(parent, host, pluginId, skinColor, skinStyle)

    if skinStyle.startswith("calf"):
        return PluginSlot_Calf(parent, host, pluginId, skinColor, skinStyle)

    if skinStyle in ("mpresets", "presets", "zynfx"):
        return PluginSlot_Presets(parent, host, pluginId, skinColor, skinStyle)

    return PluginSlot_Default(parent, host, pluginId, skinColor, skinStyle)

# ------------------------------------------------------------------------------------------------------------
# Main Testing

if __name__ == '__main__':
    from carla_app import CarlaApplication
    from carla_host import initHost, loadHostSettings
    import resources_rc

    app = CarlaApplication("Carla-Skins")
    host = initHost("Skins", None, False, False, False)
    loadHostSettings(host)

    host.engine_init("JACK", "Carla-Widgets")
    host.add_plugin(BINARY_NATIVE, PLUGIN_INTERNAL, "", "", "zynreverb", 0, None, PLUGIN_OPTIONS_NULL)
    #host.add_plugin(BINARY_NATIVE, PLUGIN_DSSI, "/usr/lib/dssi/karplong.so", "karplong", "karplong", 0, None, PLUGIN_OPTIONS_NULL)
    #host.add_plugin(BINARY_NATIVE, PLUGIN_LV2, "", "", "http://www.openavproductions.com/sorcer", 0, None, PLUGIN_OPTIONS_NULL)
    #host.add_plugin(BINARY_NATIVE, PLUGIN_LV2, "", "", "http://calf.sourceforge.net/plugins/Compressor", 0, None, PLUGIN_OPTIONS_NULL)
    host.set_active(0, True)

    #gui = createPluginSlot(None, host, 0, True)
    gui = PluginSlot_Compact(None, host, 0, (0, 0, 0), "default")
    gui.testTimer()
    gui.show()

    app.exec_()