| 
							- /*
 -  * Carla plugin host
 -  * Copyright (C) 2011-2020 Filipe Coelho <falktx@falktx.com>
 -  *
 -  * This program is free software; you can redistribute it and/or
 -  * modify it under the terms of the GNU General Public License as
 -  * published by the Free Software Foundation; either version 2 of
 -  * the License, or any later version.
 -  *
 -  * This program is distributed in the hope that it will be useful,
 -  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 -  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 -  * GNU General Public License for more details.
 -  *
 -  * For a full copy of the GNU General Public License see the doc/GPL.txt file.
 -  */
 - 
 - #include "carla_host.hpp"
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Imports (Global)
 - 
 - 
 - #if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
 - # pragma GCC diagnostic push
 - # pragma GCC diagnostic ignored "-Wconversion"
 - # pragma GCC diagnostic ignored "-Weffc++"
 - # pragma GCC diagnostic ignored "-Wsign-conversion"
 - #endif
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - 
 - #include <QtCore/QDir>
 - #include <QtCore/QStringList>
 - #include <QtCore/QTimer>
 - 
 - #include <QtGui/QPainter>
 - 
 - #include <QtWidgets/QFileDialog>
 - #include <QtWidgets/QFileSystemModel>
 - #include <QtWidgets/QMainWindow>
 - #include <QtWidgets/QMessageBox>
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - 
 - #include "ui_carla_host.hpp"
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - 
 - #if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
 - # pragma GCC diagnostic pop
 - #endif
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Imports (Custom)
 - 
 - #include "carla_database.hpp"
 - #include "carla_settings.hpp"
 - #include "carla_skin.hpp"
 - 
 - #include "CarlaHost.h"
 - #include "CarlaUtils.h"
 - 
 - #include "CarlaBackendUtils.hpp"
 - #include "CarlaMathUtils.hpp"
 - #include "CarlaString.hpp"
 - 
 - // FIXME put in right place
 - /*
 - static QString fixLogText(QString text)
 - {
 -     //v , Qt::CaseSensitive
 -     return text.replace("\x1b[30;1m", "").replace("\x1b[31m", "").replace("\x1b[0m", "");
 - }
 - */
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Session Management support
 - 
 - static const char* const CARLA_CLIENT_NAME = getenv("CARLA_CLIENT_NAME");
 - static const char* const LADISH_APP_NAME   = getenv("LADISH_APP_NAME");
 - static const char* const NSM_URL           = getenv("NSM_URL");
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - 
 - CarlaHost::CarlaHost()
 -     : QObject(),
 -       isControl(false),
 -       isPlugin(false),
 -       isRemote(false),
 -       nsmOK(false),
 -       processMode(ENGINE_PROCESS_MODE_PATCHBAY),
 -       transportMode(ENGINE_TRANSPORT_MODE_INTERNAL),
 -       transportExtra(),
 -       nextProcessMode(processMode),
 -       processModeForced(false),
 -       audioDriverForced(),
 -       experimental(false),
 -       exportLV2(false),
 -       forceStereo(false),
 -       manageUIs(false),
 -       maxParameters(0),
 -       resetXruns(false),
 -       preferPluginBridges(false),
 -       preferUIBridges(false),
 -       preventBadBehaviour(false),
 -       showLogs(false),
 -       showPluginBridges(false),
 -       showWineBridges(false),
 -       uiBridgesTimeout(0),
 -       uisAlwaysOnTop(false),
 -       pathBinaries(),
 -       pathResources() {}
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Carla Host Window
 - 
 - enum CustomActions {
 -     CUSTOM_ACTION_NONE,
 -     CUSTOM_ACTION_APP_CLOSE,
 -     CUSTOM_ACTION_PROJECT_LOAD
 - };
 - 
 - struct CachedSavedSettings {
 -     int _CARLA_KEY_MAIN_REFRESH_INTERVAL = 0;
 -     bool _CARLA_KEY_MAIN_CONFIRM_EXIT = false;
 -     bool _CARLA_KEY_CANVAS_FANCY_EYE_CANDY = false;
 - };
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - 
 - struct CarlaHostWindow::PrivateData {
 -     Ui::CarlaHostW ui;
 -     CarlaHost& host;
 -     CarlaHostWindow* const hostWindow;
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Internal stuff
 - 
 -     QWidget* const fParentOrSelf;
 - 
 -     int fIdleTimerNull; // to keep application signals alive
 -     int fIdleTimerFast;
 -     int fIdleTimerSlow;
 - 
 -     bool fLadspaRdfNeedsUpdate;
 -     QList<void*> fLadspaRdfList;
 - 
 -     int fPluginCount;
 -     QList<QWidget*> fPluginList;
 - 
 -     void* fPluginDatabaseDialog;
 -     QStringList fFavoritePlugins;
 - 
 -     QCarlaString fProjectFilename;
 -     bool fIsProjectLoading;
 -     bool fCurrentlyRemovingAllPlugins;
 - 
 -     double fLastTransportBPM;
 -     uint64_t fLastTransportFrame;
 -     bool fLastTransportState;
 -     uint fBufferSize;
 -     double fSampleRate;
 -     QCarlaString fOscAddressTCP;
 -     QCarlaString fOscAddressUDP;
 -     QCarlaString fOscReportedHost;
 - 
 - #ifdef CARLA_OS_MAC
 -     bool fMacClosingHelper;
 - #endif
 - 
 -     // CancelableActionCallback Box
 -     void* fCancelableActionBox;
 - 
 -     // run a custom action after engine is properly closed
 -     CustomActions fCustomStopAction;
 - 
 -     // first attempt of auto-start engine doesn't show an error
 -     bool fFirstEngineInit;
 - 
 -     // to be filled with key-value pairs of current settings
 -     CachedSavedSettings fSavedSettings;
 - 
 -     QCarlaString fClientName;
 -     QCarlaString fSessionManagerName;
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Internal stuff (patchbay)
 - 
 -     QImage fExportImage;
 - 
 -     bool fPeaksCleared;
 - 
 -     bool fExternalPatchbay;
 -     QList<uint> fSelectedPlugins;
 - 
 -     int fCanvasWidth;
 -     int fCanvasHeight;
 -     int fMiniCanvasUpdateTimeout;
 -     const bool fWithCanvas;
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // GUI stuff (disk)
 - 
 -     QFileSystemModel fDirModel;
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 - 
 -     // CarlaHostWindow* hostWindow,
 -     PrivateData(CarlaHostWindow* const hw, CarlaHost& h, const bool withCanvas)
 -         : ui(),
 -           host(h),
 -           hostWindow(hw),
 -           // Internal stuff
 -           fParentOrSelf(hw->parentWidget() != nullptr ? hw->parentWidget() : hw),
 -           fIdleTimerNull(0),
 -           fIdleTimerFast(0),
 -           fIdleTimerSlow(0),
 -           fLadspaRdfNeedsUpdate(true),
 -           fLadspaRdfList(),
 -           fPluginCount(0),
 -           fPluginList(),
 -           fPluginDatabaseDialog(nullptr),
 -           fFavoritePlugins(),
 -           fProjectFilename(),
 -           fIsProjectLoading(false),
 -           fCurrentlyRemovingAllPlugins(false),
 -           fLastTransportBPM(0.0),
 -           fLastTransportFrame(0),
 -           fLastTransportState(false),
 -           fBufferSize(0),
 -           fSampleRate(0.0),
 -           fOscAddressTCP(),
 -           fOscAddressUDP(),
 -           fOscReportedHost(),
 - #ifdef CARLA_OS_MAC
 -           fMacClosingHelper(true),
 - #endif
 -           fCancelableActionBox(nullptr),
 -           fCustomStopAction(CUSTOM_ACTION_NONE),
 -           fFirstEngineInit(true),
 -           fSavedSettings(),
 -           fClientName(),
 -           fSessionManagerName(),
 -           // Internal stuff (patchbay)
 -           fExportImage(),
 -           fPeaksCleared(true),
 -           fExternalPatchbay(false),
 -           fSelectedPlugins(),
 -           fCanvasWidth(0),
 -           fCanvasHeight(0),
 -           fMiniCanvasUpdateTimeout(0),
 -           fWithCanvas(withCanvas),
 -           // disk
 -           fDirModel(hostWindow)
 -     {
 -         ui.setupUi(hostWindow);
 - 
 -         //-------------------------------------------------------------------------------------------------------------
 -         // Internal stuff
 - 
 -         if (host.isControl)
 -         {
 -             fClientName         = "Carla-Control";
 -             fSessionManagerName = "Control";
 -         }
 -         else if (host.isPlugin)
 -         {
 -             fClientName         = "Carla-Plugin";
 -             fSessionManagerName = "Plugin";
 -         }
 -         else if (LADISH_APP_NAME != nullptr)
 -         {
 -             fClientName         = LADISH_APP_NAME;
 -             fSessionManagerName = "LADISH";
 -         }
 -         else if (NSM_URL != nullptr && host.nsmOK)
 -         {
 -             fClientName         = "Carla.tmp";
 -             fSessionManagerName = "Non Session Manager TMP";
 -         }
 -         else
 -         {
 -             fClientName         = CARLA_CLIENT_NAME != nullptr ? CARLA_CLIENT_NAME : "Carla";
 -             fSessionManagerName = "";
 -         }
 - 
 -         //-------------------------------------------------------------------------------------------------------------
 -         // Set up GUI (engine stopped)
 - 
 -         if (host.isPlugin || host.isControl)
 -         {
 -             ui.act_file_save->setVisible(false);
 -             ui.act_engine_start->setEnabled(false);
 -             ui.act_engine_start->setVisible(false);
 -             ui.act_engine_stop->setEnabled(false);
 -             ui.act_engine_stop->setVisible(false);
 -             ui.menu_Engine->setEnabled(false);
 -             ui.menu_Engine->setVisible(false);
 -             if (QAction* const action = ui.menu_Engine->menuAction())
 -                 action->setVisible(false);
 -             ui.tabWidget->removeTab(2);
 - 
 -             if (host.isControl)
 -             {
 -                 ui.act_file_new->setVisible(false);
 -                 ui.act_file_open->setVisible(false);
 -                 ui.act_file_save_as->setVisible(false);
 -                 ui.tabUtils->removeTab(0);
 -             }
 -             else
 -             {
 -                 ui.act_file_save_as->setText(tr("Export as..."));
 - 
 -                 if (! withCanvas)
 -                     if (QTabBar* const tabBar = ui.tabWidget->tabBar())
 -                         tabBar->hide();
 -             }
 -         }
 -         else
 -         {
 -             ui.act_engine_start->setEnabled(true);
 - #ifdef CARLA_OS_WIN
 -             ui.tabWidget->removeTab(2);
 - #endif
 -         }
 - 
 -         if (host.isControl)
 -         {
 -             ui.act_file_refresh->setEnabled(false);
 -         }
 -         else
 -         {
 -             ui.act_file_connect->setEnabled(false);
 -             ui.act_file_connect->setVisible(false);
 -             ui.act_file_refresh->setEnabled(false);
 -             ui.act_file_refresh->setVisible(false);
 -         }
 - 
 -         if (fSessionManagerName.isNotEmpty() && ! host.isPlugin)
 -             ui.act_file_new->setEnabled(false);
 - 
 -         ui.act_file_open->setEnabled(false);
 -         ui.act_file_save->setEnabled(false);
 -         ui.act_file_save_as->setEnabled(false);
 -         ui.act_engine_stop->setEnabled(false);
 -         ui.act_plugin_remove_all->setEnabled(false);
 - 
 -         ui.act_canvas_show_internal->setChecked(false);
 -         ui.act_canvas_show_internal->setVisible(false);
 -         ui.act_canvas_show_external->setChecked(false);
 -         ui.act_canvas_show_external->setVisible(false);
 - 
 -         ui.menu_PluginMacros->setEnabled(false);
 -         ui.menu_Canvas->setEnabled(false);
 - 
 -         QWidget* const dockWidgetTitleBar = new QWidget(hostWindow);
 -         ui.dockWidget->setTitleBarWidget(dockWidgetTitleBar);
 - 
 -         if (! withCanvas)
 -         {
 -             ui.act_canvas_show_internal->setVisible(false);
 -             ui.act_canvas_show_external->setVisible(false);
 -             ui.act_canvas_arrange->setVisible(false);
 -             ui.act_canvas_refresh->setVisible(false);
 -             ui.act_canvas_save_image->setVisible(false);
 -             ui.act_canvas_zoom_100->setVisible(false);
 -             ui.act_canvas_zoom_fit->setVisible(false);
 -             ui.act_canvas_zoom_in->setVisible(false);
 -             ui.act_canvas_zoom_out->setVisible(false);
 -             ui.act_settings_show_meters->setVisible(false);
 -             ui.act_settings_show_keyboard->setVisible(false);
 -             ui.menu_Canvas_Zoom->setEnabled(false);
 -             ui.menu_Canvas_Zoom->setVisible(false);
 -             if (QAction* const action = ui.menu_Canvas_Zoom->menuAction())
 -                 action->setVisible(false);
 -             ui.menu_Canvas->setEnabled(false);
 -             ui.menu_Canvas->setVisible(false);
 -             if (QAction* const action = ui.menu_Canvas->menuAction())
 -                 action->setVisible(false);
 -             ui.tw_miniCanvas->hide();
 -             ui.tabWidget->removeTab(1);
 - #ifdef CARLA_OS_WIN
 -             ui.tabWidget->tabBar().hide()
 - #endif
 -         }
 - 
 -         //-------------------------------------------------------------------------------------------------------------
 -         // Set up GUI (disk)
 - 
 -         const QString home(QDir::homePath());
 -         fDirModel.setRootPath(home);
 - 
 -         if (const char* const* const exts = carla_get_supported_file_extensions())
 -         {
 -             QStringList filters;
 -             const QString prefix("*.");
 - 
 -             for (uint i=0; exts[i] != nullptr; ++i)
 -                 filters.append(prefix + exts[i]);
 - 
 -             fDirModel.setNameFilters(filters);
 -         }
 - 
 -         ui.fileTreeView->setModel(&fDirModel);
 -         ui.fileTreeView->setRootIndex(fDirModel.index(home));
 -         ui.fileTreeView->setColumnHidden(1, true);
 -         ui.fileTreeView->setColumnHidden(2, true);
 -         ui.fileTreeView->setColumnHidden(3, true);
 -         ui.fileTreeView->setHeaderHidden(true);
 - 
 -         //-------------------------------------------------------------------------------------------------------------
 -         // Set up GUI (transport)
 - 
 -         const QFontMetrics fontMetrics(ui.l_transport_bbt->fontMetrics());
 -         int minValueWidth = fontMetricsHorizontalAdvance(fontMetrics, "000|00|0000");
 -         int minLabelWidth = fontMetricsHorizontalAdvance(fontMetrics, ui.label_transport_frame->text());
 - 
 -         int labelTimeWidth = fontMetricsHorizontalAdvance(fontMetrics, ui.label_transport_time->text());
 -         int labelBBTWidth  = fontMetricsHorizontalAdvance(fontMetrics, ui.label_transport_bbt->text());
 - 
 -         if (minLabelWidth < labelTimeWidth)
 -             minLabelWidth = labelTimeWidth;
 -         if (minLabelWidth < labelBBTWidth)
 -             minLabelWidth = labelBBTWidth;
 - 
 -         ui.label_transport_frame->setMinimumWidth(minLabelWidth + 3);
 -         ui.label_transport_time->setMinimumWidth(minLabelWidth + 3);
 -         ui.label_transport_bbt->setMinimumWidth(minLabelWidth + 3);
 - 
 -         ui.l_transport_bbt->setMinimumWidth(minValueWidth + 3);
 -         ui.l_transport_frame->setMinimumWidth(minValueWidth + 3);
 -         ui.l_transport_time->setMinimumWidth(minValueWidth + 3);
 - 
 -         if (host.isPlugin)
 -         {
 -             ui.b_transport_play->setEnabled(false);
 -             ui.b_transport_stop->setEnabled(false);
 -             ui.b_transport_backwards->setEnabled(false);
 -             ui.b_transport_forwards->setEnabled(false);
 -             ui.group_transport_controls->setEnabled(false);
 -             ui.group_transport_controls->setVisible(false);
 -             ui.cb_transport_link->setEnabled(false);
 -             ui.cb_transport_link->setVisible(false);
 -             ui.cb_transport_jack->setEnabled(false);
 -             ui.cb_transport_jack->setVisible(false);
 -             ui.dsb_transport_bpm->setEnabled(false);
 -             ui.dsb_transport_bpm->setReadOnly(true);
 -         }
 - 
 -         ui.w_transport->setEnabled(false);
 - 
 -         //-------------------------------------------------------------------------------------------------------------
 -         // Set up GUI (rack)
 - 
 -         // ui.listWidget->setHostAndParent(host, self);
 - 
 -         if (QScrollBar* const sb = ui.listWidget->verticalScrollBar())
 -         {
 -             ui.rackScrollBar->setMinimum(sb->minimum());
 -             ui.rackScrollBar->setMaximum(sb->maximum());
 -             ui.rackScrollBar->setValue(sb->value());
 - 
 -             /*
 -             sb->rangeChanged.connect(ui.rackScrollBar.setRange);
 -             sb->valueChanged.connect(ui.rackScrollBar.setValue);
 -             ui.rackScrollBar->rangeChanged.connect(sb.setRange);
 -             ui.rackScrollBar->valueChanged.connect(sb.setValue);
 -             */
 -         }
 - 
 -         updateStyle();
 - 
 -         ui.rack->setStyleSheet("      \
 -         CarlaRackList#CarlaRackList { \
 -             background-color: black;  \
 -         }                             \
 -         ");
 - 
 -         //-------------------------------------------------------------------------------------------------------------
 -         // Set up GUI (patchbay)
 - 
 -         /*
 -         ui.peak_in->setChannelCount(2);
 -         ui.peak_in->setMeterColor(DigitalPeakMeter.COLOR_BLUE);
 -         ui.peak_in->setMeterOrientation(DigitalPeakMeter.VERTICAL);
 -         */
 -         ui.peak_in->setFixedWidth(25);
 - 
 -         /*
 -         ui.peak_out->setChannelCount(2);
 -         ui.peak_out->setMeterColor(DigitalPeakMeter.COLOR_GREEN);
 -         ui.peak_out->setMeterOrientation(DigitalPeakMeter.VERTICAL);
 -         */
 -         ui.peak_out->setFixedWidth(25);
 - 
 -         /*
 -         ui.scrollArea = PixmapKeyboardHArea(ui.patchbay);
 -         ui.keyboard   = ui.scrollArea.keyboard;
 -         ui.patchbay.layout().addWidget(ui.scrollArea, 1, 0, 1, 0);
 - 
 -         ui.scrollArea->setEnabled(false);
 - 
 -         ui.miniCanvasPreview->setRealParent(self);
 -         */
 -         if (QTabBar* const tabBar = ui.tw_miniCanvas->tabBar())
 -             tabBar->hide();
 - 
 -         //-------------------------------------------------------------------------------------------------------------
 -         // Set up GUI (special stuff for Mac OS)
 - 
 - #ifdef CARLA_OS_MAC
 -         ui.act_file_quit->setMenuRole(QAction::QuitRole);
 -         ui.act_settings_configure->setMenuRole(QAction::PreferencesRole);
 -         ui.act_help_about->setMenuRole(QAction::AboutRole);
 -         ui.act_help_about_qt->setMenuRole(QAction::AboutQtRole);
 -         ui.menu_Settings->setTitle("Panels");
 -         if (QAction* const action = ui.menu_Help.menuAction())
 -             action->setVisible(false);
 - #endif
 - 
 -         //-------------------------------------------------------------------------------------------------------------
 -         // Load Settings
 - 
 -         loadSettings(true);
 - 
 -         //-------------------------------------------------------------------------------------------------------------
 -         // Final setup
 - 
 -         ui.text_logs->clear();
 -         setProperWindowTitle();
 - 
 -         // Disable non-supported features
 -         const char* const* const features = carla_get_supported_features();
 - 
 -         if (! stringArrayContainsString(features, "link"))
 -         {
 -             ui.cb_transport_link->setEnabled(false);
 -             ui.cb_transport_link->setVisible(false);
 -         }
 - 
 -         if (! stringArrayContainsString(features, "juce"))
 -         {
 -             ui.act_help_about_juce->setEnabled(false);
 -             ui.act_help_about_juce->setVisible(false);
 -         }
 - 
 -         // Plugin needs to have timers always running so it receives messages
 -         if (host.isPlugin || host.isRemote)
 -         {
 -             startTimers();
 -         }
 -         // Load initial project file if set
 -         else
 -         {
 -             /*
 -             projectFile = getInitialProjectFile(QApplication.instance());
 - 
 -             if (projectFile)
 -                 loadProjectLater(projectFile);
 -             */
 -         }
 - 
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Setup
 - 
 - #if 0
 -     def compactPlugin(self, pluginId):
 -         if pluginId > self.fPluginCount:
 -             return
 - 
 -         pitem = self.fPluginList[pluginId]
 - 
 -         if pitem is None:
 -             return
 - 
 -         pitem.recreateWidget(True)
 - 
 -     def changePluginColor(self, pluginId, color, colorStr):
 -         if pluginId > self.fPluginCount:
 -             return
 - 
 -         pitem = self.fPluginList[pluginId]
 - 
 -         if pitem is None:
 -             return
 - 
 -         self.host.set_custom_data(pluginId, CUSTOM_DATA_TYPE_PROPERTY, "CarlaColor", colorStr)
 -         pitem.recreateWidget(newColor = color)
 - 
 -     def changePluginSkin(self, pluginId, skin):
 -         if pluginId > self.fPluginCount:
 -             return
 - 
 -         pitem = self.fPluginList[pluginId]
 - 
 -         if pitem is None:
 -             return
 - 
 -         self.host.set_custom_data(pluginId, CUSTOM_DATA_TYPE_PROPERTY, "CarlaSkin", skin)
 -         if skin not in ("default","rncbc","presets","mpresets"):
 -             pitem.recreateWidget(newSkin = skin, newColor = (255,255,255))
 -         else:
 -             pitem.recreateWidget(newSkin = skin)
 - 
 -     def switchPlugins(self, pluginIdA, pluginIdB):
 -         if pluginIdA == pluginIdB:
 -             return
 -         if pluginIdA < 0 or pluginIdB < 0:
 -             return
 -         if pluginIdA >= self.fPluginCount or pluginIdB >= self.fPluginCount:
 -             return
 - 
 -         self.host.switch_plugins(pluginIdA, pluginIdB)
 - 
 -         itemA = self.fPluginList[pluginIdA]
 -         compactA = itemA.isCompacted()
 -         guiShownA = itemA.isGuiShown()
 - 
 -         itemB = self.fPluginList[pluginIdB]
 -         compactB = itemB.isCompacted()
 -         guiShownB = itemB.isGuiShown()
 - 
 -         itemA.setPluginId(pluginIdA)
 -         itemA.recreateWidget2(compactB, guiShownB)
 - 
 -         itemB.setPluginId(pluginIdB)
 -         itemB.recreateWidget2(compactA, guiShownA)
 - 
 -         if self.fWithCanvas:
 -             self.slot_canvasRefresh()
 - #endif
 - 
 -     void setLoadRDFsNeeded() noexcept
 -     {
 -         fLadspaRdfNeedsUpdate = true;
 -     }
 - 
 -     void setProperWindowTitle()
 -     {
 -         QString title(fClientName);
 - 
 -         /*
 -         if (fProjectFilename.isNotEmpty() && ! host.nsmOK)
 -             title += QString(" - %s").arg(os.path.basename(fProjectFilename));
 -         */
 -         if (fSessionManagerName.isNotEmpty())
 -             title += QString(" (%s)").arg(fSessionManagerName);
 - 
 -         hostWindow->setWindowTitle(title);
 -     }
 - 
 -     void updateBufferSize(const uint newBufferSize)
 -     {
 -         if (fBufferSize == newBufferSize)
 -             return;
 -         fBufferSize = newBufferSize;
 -         ui.cb_buffer_size->clear();
 -         ui.cb_buffer_size->addItem(QString("%1").arg(newBufferSize));
 -         ui.cb_buffer_size->setCurrentIndex(0);
 -     }
 - 
 -     void updateSampleRate(const double newSampleRate)
 -     {
 -         if (carla_isEqual(fSampleRate, newSampleRate))
 -             return;
 -         fSampleRate = newSampleRate;
 -         ui.cb_sample_rate->clear();
 -         ui.cb_sample_rate->addItem(QString("%1").arg(newSampleRate));
 -         ui.cb_sample_rate->setCurrentIndex(0);
 -         refreshTransport(true);
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Files
 - 
 - #if 0
 -     def makeExtraFilename(self):
 -         return self.fProjectFilename.rsplit(".",1)[0]+".json"
 - #endif
 - 
 -     void loadProjectNow()
 -     {
 -         if (fProjectFilename.isEmpty())
 -             return qCritical("ERROR: loading project without filename set");
 -         /*
 -         if (host.nsmOK && ! os.path.exists(self.fProjectFilename))
 -             return;
 -         */
 - 
 -         projectLoadingStarted();
 -         fIsProjectLoading = true;
 - 
 -         if (! carla_load_project(host.handle, fProjectFilename.toUtf8()))
 -         {
 -             fIsProjectLoading = false;
 -             projectLoadingFinished();
 - 
 -             CustomMessageBox(hostWindow,
 -                              QMessageBox::Critical,
 -                              tr("Error"),
 -                              tr("Failed to load project"),
 -                              carla_get_last_error(host.handle),
 -                              QMessageBox::Ok, QMessageBox::Ok);
 -         }
 -     }
 - 
 - #if 0
 -     def loadProjectLater(self, filename):
 -         self.fProjectFilename = QFileInfo(filename).absoluteFilePath()
 -         self.setProperWindowTitle()
 -         QTimer.singleShot(1, self.slot_loadProjectNow)
 - 
 -     def saveProjectNow(self):
 -         if not self.fProjectFilename:
 -             return qCritical("ERROR: saving project without filename set")
 - 
 -         if not self.host.save_project(self.fProjectFilename):
 -             CustomMessageBox(self, QMessageBox.Critical, self.tr("Error"), self.tr("Failed to save project"),
 -                              self.host.get_last_error(),
 -                              QMessageBox.Ok, QMessageBox.Ok)
 -             return
 - 
 -         if not self.fWithCanvas:
 -             return
 - 
 -         with open(self.makeExtraFilename(), 'w') as fh:
 -             json.dump({
 -                 'canvas': patchcanvas.saveGroupPositions(),
 -             }, fh)
 - #endif
 - 
 -     void projectLoadingStarted()
 -     {
 -         ui.rack->setEnabled(false);
 -         ui.graphicsView->setEnabled(false);
 -     }
 - 
 -     void projectLoadingFinished()
 -     {
 -         ui.rack->setEnabled(true);
 -         ui.graphicsView->setEnabled(true);
 - 
 -         if (! fWithCanvas)
 -             return;
 - 
 -         QTimer::singleShot(1000, hostWindow, SLOT(slot_canvasRefresh()));
 - 
 -         /*
 -         const QString extrafile = makeExtraFilename();
 -         if not os.path.exists(extrafile):
 -             return;
 - 
 -         try:
 -             with open(extrafile, "r") as fh:
 -                 canvasdata = json.load(fh)['canvas']
 -         except:
 -             return
 - 
 -         patchcanvas.restoreGroupPositions(canvasdata)
 -         */
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Engine (menu actions)
 - 
 -     void engineStopFinal()
 -     {
 -         killTimers();
 - 
 -         if (carla_is_engine_running(host.handle))
 -         {
 -             if (fCustomStopAction == CUSTOM_ACTION_PROJECT_LOAD)
 -             {
 -                 removeAllPlugins();
 -             }
 -             else if (fPluginCount != 0)
 -             {
 -                 fCurrentlyRemovingAllPlugins = true;
 -                 projectLoadingStarted();
 -             }
 - 
 -             if (! carla_remove_all_plugins(host.handle))
 -             {
 -                 ui.text_logs->appendPlainText("Failed to remove all plugins, error was:");
 -                 ui.text_logs->appendPlainText(carla_get_last_error(host.handle));
 -             }
 - 
 -             if (! carla_engine_close(host.handle))
 -             {
 -                 ui.text_logs->appendPlainText("Failed to stop engine, error was:");
 -                 ui.text_logs->appendPlainText(carla_get_last_error(host.handle));
 -             }
 -         }
 - 
 -         if (fCustomStopAction == CUSTOM_ACTION_APP_CLOSE)
 -         {
 -             hostWindow->close();
 -         }
 -         else if (fCustomStopAction == CUSTOM_ACTION_PROJECT_LOAD)
 -         {
 -             hostWindow->slot_engineStart();
 -             loadProjectNow();
 -             carla_nsm_ready(host.handle, NSM_CALLBACK_OPEN);
 -         }
 - 
 -         fCustomStopAction = CUSTOM_ACTION_NONE;
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Plugins
 - 
 -     void removeAllPlugins()
 -     {
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Plugins (menu actions)
 - 
 -     void showAddPluginDialog()
 -     {
 -     }
 - 
 -     void showAddJackAppDialog()
 -     {
 -     }
 - 
 -     void pluginRemoveAll()
 -     {
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Canvas
 - 
 -     void clearSideStuff()
 -     {
 -     }
 - 
 -     void setupCanvas()
 -     {
 -     }
 - 
 -     void updateCanvasInitialPos()
 -     {
 -     }
 - 
 -     void updateMiniCanvasLater()
 -     {
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Settings
 - 
 -     void saveSettings()
 -     {
 -         QSafeSettings settings;
 - 
 -         settings.setValue("Geometry", hostWindow->saveGeometry());
 -         settings.setValue("ShowToolbar", ui.toolBar->isEnabled());
 - 
 -         if (! host.isControl)
 -             settings.setValue("ShowSidePanel", ui.dockWidget->isEnabled());
 - 
 -         QStringList diskFolders;
 - 
 -         /*
 -         for i in range(ui.cb_disk.count()):
 -             diskFolders.append(ui.cb_disk->itemData(i))
 -         */
 - 
 -         settings.setValue("DiskFolders", diskFolders);
 -         settings.setValue("LastBPM", fLastTransportBPM);
 - 
 -         settings.setValue("ShowMeters", ui.act_settings_show_meters->isChecked());
 -         settings.setValue("ShowKeyboard", ui.act_settings_show_keyboard->isChecked());
 -         settings.setValue("HorizontalScrollBarValue", ui.graphicsView->horizontalScrollBar()->value());
 -         settings.setValue("VerticalScrollBarValue", ui.graphicsView->verticalScrollBar()->value());
 - 
 -         settings.setValue(CARLA_KEY_ENGINE_TRANSPORT_MODE, host.transportMode);
 -         settings.setValue(CARLA_KEY_ENGINE_TRANSPORT_EXTRA, host.transportExtra);
 -     }
 - 
 -     void loadSettings(bool firstTime)
 -     {
 -         const QSafeSettings settings;
 - 
 -         if (firstTime)
 -         {
 -             const QByteArray geometry(settings.valueByteArray("Geometry"));
 -             if (! geometry.isNull())
 -                 hostWindow->restoreGeometry(geometry);
 - 
 -             // if settings.contains("SplitterState"):
 -                 //ui.splitter.restoreState(settings.value("SplitterState", b""))
 -             //else:
 -                 //ui.splitter.setSizes([210, 99999])
 - 
 -             const bool toolbarVisible = settings.valueBool("ShowToolbar", true);
 -             ui.act_settings_show_toolbar->setChecked(toolbarVisible);
 -             showToolbar(toolbarVisible);
 - 
 -             const bool sidePanelVisible = settings.valueBool("ShowSidePanel", true) && ! host.isControl;
 -             ui.act_settings_show_side_panel->setChecked(sidePanelVisible);
 -             showSidePanel(sidePanelVisible);
 - 
 -             QStringList diskFolders;
 -             diskFolders.append(QDir::homePath());
 -             diskFolders = settings.valueStringList("DiskFolders", diskFolders);
 - 
 -             ui.cb_disk->setItemData(0, QDir::homePath());
 - 
 -             for (const auto& folder : diskFolders)
 -             {
 -                 /*
 -                 if i == 0: continue;
 -                 folder = diskFolders[i];
 -                 ui.cb_disk->addItem(os.path.basename(folder), folder);
 -                 */
 -             }
 - 
 -             //if MACOS and not settings.value(CARLA_KEY_MAIN_USE_PRO_THEME, true, bool):
 -             //    setUnifiedTitleAndToolBarOnMac(true)
 - 
 -             const bool showMeters = settings.valueBool("ShowMeters", true);
 -             ui.act_settings_show_meters->setChecked(showMeters);
 -             ui.peak_in->setVisible(showMeters);
 -             ui.peak_out->setVisible(showMeters);
 - 
 -             const bool showKeyboard = settings.valueBool("ShowKeyboard", true);
 -             ui.act_settings_show_keyboard->setChecked(showKeyboard);
 -             /*
 -             ui.scrollArea->setVisible(showKeyboard);
 -             */
 - 
 -             const QSafeSettings settingsDBf("falkTX", "CarlaDatabase2");
 -             fFavoritePlugins = settingsDBf.valueStringList("PluginDatabase/Favorites");
 - 
 -             QTimer::singleShot(100, hostWindow, SLOT(slot_restoreCanvasScrollbarValues()));
 -         }
 - 
 -         // TODO - complete this
 -         fSavedSettings._CARLA_KEY_MAIN_CONFIRM_EXIT = settings.valueBool(CARLA_KEY_MAIN_CONFIRM_EXIT,
 -                                                                          CARLA_DEFAULT_MAIN_CONFIRM_EXIT);
 - 
 -         fSavedSettings._CARLA_KEY_MAIN_REFRESH_INTERVAL = settings.valueIntPositive(CARLA_KEY_MAIN_REFRESH_INTERVAL,
 -                                                                                     CARLA_DEFAULT_MAIN_REFRESH_INTERVAL);
 - 
 -         fSavedSettings._CARLA_KEY_CANVAS_FANCY_EYE_CANDY = settings.valueBool(CARLA_KEY_CANVAS_FANCY_EYE_CANDY,
 -                                                                               CARLA_DEFAULT_CANVAS_FANCY_EYE_CANDY);
 - 
 -         /*
 -         {
 -             CARLA_KEY_MAIN_PROJECT_FOLDER:      settings.value(CARLA_KEY_MAIN_PROJECT_FOLDER,      CARLA_DEFAULT_MAIN_PROJECT_FOLDER,      str),
 -             CARLA_KEY_MAIN_EXPERIMENTAL:        settings.value(CARLA_KEY_MAIN_EXPERIMENTAL,        CARLA_DEFAULT_MAIN_EXPERIMENTAL,        bool),
 -             CARLA_KEY_CANVAS_THEME:             settings.value(CARLA_KEY_CANVAS_THEME,             CARLA_DEFAULT_CANVAS_THEME,             str),
 -             CARLA_KEY_CANVAS_SIZE:              settings.value(CARLA_KEY_CANVAS_SIZE,              CARLA_DEFAULT_CANVAS_SIZE,              str),
 -             CARLA_KEY_CANVAS_AUTO_HIDE_GROUPS:  settings.value(CARLA_KEY_CANVAS_AUTO_HIDE_GROUPS,  CARLA_DEFAULT_CANVAS_AUTO_HIDE_GROUPS,  bool),
 -             CARLA_KEY_CANVAS_AUTO_SELECT_ITEMS: settings.value(CARLA_KEY_CANVAS_AUTO_SELECT_ITEMS, CARLA_DEFAULT_CANVAS_AUTO_SELECT_ITEMS, bool),
 -             CARLA_KEY_CANVAS_USE_BEZIER_LINES:  settings.value(CARLA_KEY_CANVAS_USE_BEZIER_LINES,  CARLA_DEFAULT_CANVAS_USE_BEZIER_LINES,  bool),
 -             CARLA_KEY_CANVAS_EYE_CANDY:         settings.value(CARLA_KEY_CANVAS_EYE_CANDY,         CARLA_DEFAULT_CANVAS_EYE_CANDY,         bool),
 -             CARLA_KEY_CANVAS_USE_OPENGL:        settings.value(CARLA_KEY_CANVAS_USE_OPENGL,        CARLA_DEFAULT_CANVAS_USE_OPENGL,        bool),
 -             CARLA_KEY_CANVAS_ANTIALIASING:      settings.value(CARLA_KEY_CANVAS_ANTIALIASING,      CARLA_DEFAULT_CANVAS_ANTIALIASING,      int),
 -             CARLA_KEY_CANVAS_HQ_ANTIALIASING:   settings.value(CARLA_KEY_CANVAS_HQ_ANTIALIASING,   CARLA_DEFAULT_CANVAS_HQ_ANTIALIASING,   bool),
 -             CARLA_KEY_CANVAS_FULL_REPAINTS:     settings.value(CARLA_KEY_CANVAS_FULL_REPAINTS,     CARLA_DEFAULT_CANVAS_FULL_REPAINTS,     bool),
 -             CARLA_KEY_CANVAS_INLINE_DISPLAYS:   settings.value(CARLA_KEY_CANVAS_INLINE_DISPLAYS,   CARLA_DEFAULT_CANVAS_INLINE_DISPLAYS,   bool),
 -             CARLA_KEY_CUSTOM_PAINTING:         (settings.value(CARLA_KEY_MAIN_USE_PRO_THEME,    true,   bool) and
 -                                                 settings.value(CARLA_KEY_MAIN_PRO_THEME_COLOR, "Black", str).lower() == "black"),
 -         }
 -         */
 - 
 -         const QSafeSettings settings2("falkTX", "Carla2");
 - 
 -         if (host.experimental)
 -         {
 -             const bool visible = settings2.valueBool(CARLA_KEY_EXPERIMENTAL_JACK_APPS,
 -                                                      CARLA_DEFAULT_EXPERIMENTAL_JACK_APPS);
 -             ui.act_plugin_add_jack->setVisible(visible);
 -         }
 -         else
 -         {
 -             ui.act_plugin_add_jack->setVisible(false);
 -         }
 - 
 -         fMiniCanvasUpdateTimeout = fSavedSettings._CARLA_KEY_CANVAS_FANCY_EYE_CANDY ? 1000 : 0;
 - 
 -         setEngineSettings(host);
 -         restartTimersIfNeeded();
 -     }
 - 
 -     void enableTransport(const bool enabled)
 -     {
 -         ui.group_transport_controls->setEnabled(enabled);
 -         ui.group_transport_settings->setEnabled(enabled);
 -     }
 - 
 -     void showSidePanel(const bool yesNo)
 -     {
 -         ui.dockWidget->setEnabled(yesNo);
 -         ui.dockWidget->setVisible(yesNo);
 -     }
 - 
 -     void showToolbar(const bool yesNo)
 -     {
 -         ui.toolBar->setEnabled(yesNo);
 -         ui.toolBar->setVisible(yesNo);
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Transport
 - 
 -     void refreshTransport(const bool forced = false)
 -     {
 -         if (! ui.l_transport_time->isVisible())
 -             return;
 -         if (carla_isZero(fSampleRate) or ! carla_is_engine_running(host.handle))
 -             return;
 - 
 -         const CarlaTransportInfo* const timeInfo = carla_get_transport_info(host.handle);
 -         const bool     playing  = timeInfo->playing;
 -         const uint64_t frame    = timeInfo->frame;
 -         const double   bpm      = timeInfo->bpm;
 - 
 -         if (playing != fLastTransportState || forced)
 -         {
 -             if (playing)
 -             {
 -                 const QIcon icon(":/16x16/media-playback-pause.svgz");
 -                 ui.b_transport_play->setChecked(true);
 -                 ui.b_transport_play->setIcon(icon);
 -                 // ui.b_transport_play->setText(tr("&Pause"));
 -             }
 -             else
 -             {
 -                 const QIcon icon(":/16x16/media-playback-start.svgz");
 -                 ui.b_transport_play->setChecked(false);
 -                 ui.b_transport_play->setIcon(icon);
 -                 // ui.b_play->setText(tr("&Play"));
 -             }
 - 
 -             fLastTransportState = playing;
 -         }
 - 
 -         if (frame != fLastTransportFrame || forced)
 -         {
 -             fLastTransportFrame = frame;
 - 
 -             const uint64_t time = frame / static_cast<uint32_t>(fSampleRate);
 -             const uint64_t secs =  time % 60;
 -             const uint64_t mins = (time / 60) % 60;
 -             const uint64_t hrs  = (time / 3600) % 60;
 -             ui.l_transport_time->setText(QString("%1:%2:%3").arg(hrs, 2, 10, QChar('0')).arg(mins, 2, 10, QChar('0')).arg(secs, 2, 10, QChar('0')));
 - 
 -             const uint64_t frame1 =  frame % 1000;
 -             const uint64_t frame2 = (frame / 1000) % 1000;
 -             const uint64_t frame3 = (frame / 1000000) % 1000;
 -             ui.l_transport_frame->setText(QString("%1'%2'%3").arg(frame3, 3, 10, QChar('0')).arg(frame2, 3, 10, QChar('0')).arg(frame1, 3, 10, QChar('0')));
 - 
 -             const int32_t bar  = timeInfo->bar;
 -             const int32_t beat = timeInfo->beat;
 -             const int32_t tick = timeInfo->tick;
 -             ui.l_transport_bbt->setText(QString("%1|%2|%3").arg(bar, 3, 10, QChar('0')).arg(beat, 2, 10, QChar('0')).arg(tick, 4, 10, QChar('0')));
 -         }
 - 
 -         if (carla_isNotEqual(bpm, fLastTransportBPM) || forced)
 -         {
 -             fLastTransportBPM = bpm;
 - 
 -             if (bpm > 0.0)
 -             {
 -                 ui.dsb_transport_bpm->blockSignals(true);
 -                 ui.dsb_transport_bpm->setValue(bpm);
 -                 ui.dsb_transport_bpm->blockSignals(false);
 -                 ui.dsb_transport_bpm->setStyleSheet("");
 -             }
 -             else
 -             {
 -                 ui.dsb_transport_bpm->setStyleSheet("QDoubleSpinBox { color: palette(mid); }");
 -             }
 -         }
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Timers
 - 
 -     void startTimers()
 -     {
 -         if (fIdleTimerFast == 0)
 -             fIdleTimerFast = hostWindow->startTimer(fSavedSettings._CARLA_KEY_MAIN_REFRESH_INTERVAL);
 - 
 -         if (fIdleTimerSlow == 0)
 -             fIdleTimerSlow = hostWindow->startTimer(fSavedSettings._CARLA_KEY_MAIN_REFRESH_INTERVAL*4);
 -     }
 - 
 -     void restartTimersIfNeeded()
 -     {
 -         if (fIdleTimerFast != 0)
 -         {
 -             hostWindow->killTimer(fIdleTimerFast);
 -             fIdleTimerFast = hostWindow->startTimer(fSavedSettings._CARLA_KEY_MAIN_REFRESH_INTERVAL);
 -         }
 - 
 -         if (fIdleTimerSlow != 0)
 -         {
 -             hostWindow->killTimer(fIdleTimerSlow);
 -             fIdleTimerSlow = hostWindow->startTimer(fSavedSettings._CARLA_KEY_MAIN_REFRESH_INTERVAL*4);;
 -         }
 -     }
 - 
 -     void killTimers()
 -     {
 -         if (fIdleTimerFast != 0)
 -         {
 -             hostWindow->killTimer(fIdleTimerFast);
 -             fIdleTimerFast = 0;
 -         }
 - 
 -         if (fIdleTimerSlow != 0)
 -         {
 -             hostWindow->killTimer(fIdleTimerSlow);
 -             fIdleTimerSlow = 0;
 -         }
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Internal stuff
 - 
 -     void* getExtraPtr(/*self, plugin*/)
 -     {
 -         return nullptr;
 -     }
 - 
 -     void maybeLoadRDFs()
 -     {
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 - 
 -     /*
 -     def getPluginCount(self):
 -         return self.fPluginCount
 - 
 -     def getPluginItem(self, pluginId):
 -         if pluginId >= self.fPluginCount:
 -             return None
 - 
 -         pitem = self.fPluginList[pluginId]
 -         if pitem is None:
 -             return None
 -         #if False:
 -             #return CarlaRackItem(self, 0, False)
 - 
 -         return pitem
 - 
 -     def getPluginEditDialog(self, pluginId):
 -         if pluginId >= self.fPluginCount:
 -             return None
 - 
 -         pitem = self.fPluginList[pluginId]
 -         if pitem is None:
 -             return None
 -         if False:
 -             return PluginEdit(self, self.host, 0)
 - 
 -         return pitem.getEditDialog()
 - 
 -     def getPluginSlotWidget(self, pluginId):
 -         if pluginId >= self.fPluginCount:
 -             return None
 - 
 -         pitem = self.fPluginList[pluginId]
 -         if pitem is None:
 -             return None
 -         #if False:
 -             #return AbstractPluginSlot()
 - 
 -         return pitem.getWidget()
 -     */
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // timer event
 - 
 -     void refreshRuntimeInfo(const float load, const uint xruns)
 -     {
 -         const QString txt1(xruns == 0 ? QString("%1").arg(xruns) : QString("--"));
 -         const QString txt2(xruns == 1 ? "" : "s");
 -         ui.b_xruns->setText(QString("%1 Xrun%2").arg(txt1).arg(txt2));
 -         ui.pb_dsp_load->setValue(int(load));
 -     }
 - 
 -     void getAndRefreshRuntimeInfo()
 -     {
 -         if (! ui.pb_dsp_load->isVisible())
 -             return;
 -         if (! carla_is_engine_running(host.handle))
 -             return;
 -         const CarlaRuntimeEngineInfo* const info = carla_get_runtime_engine_info(host.handle);
 -         refreshRuntimeInfo(info->load, info->xruns);
 -     }
 - 
 -     void idleFast()
 -     {
 -         carla_engine_idle(host.handle);
 -         refreshTransport();
 - 
 -         if (fPluginCount == 0 || fCurrentlyRemovingAllPlugins)
 -             return;
 - 
 -         for (auto& pitem : fPluginList)
 -         {
 -             if (pitem == nullptr)
 -                 break;
 - 
 -             /*
 -             pitem->getWidget().idleFast();
 -             */
 -         }
 - 
 -         for (uint pluginId : fSelectedPlugins)
 -         {
 -             fPeaksCleared = false;
 -             if (ui.peak_in->isVisible())
 -             {
 -                 /*
 -                 ui.peak_in->displayMeter(1, carla_get_input_peak_value(pluginId, true))
 -                 ui.peak_in->displayMeter(2, carla_get_input_peak_value(pluginId, false))
 -                 */
 -             }
 -             if (ui.peak_out->isVisible())
 -             {
 -                 /*
 -                 ui.peak_out->displayMeter(1, carla_get_output_peak_value(pluginId, true))
 -                 ui.peak_out->displayMeter(2, carla_get_output_peak_value(pluginId, false))
 -                 */
 -             }
 -             return;
 -         }
 - 
 -         if (fPeaksCleared)
 -             return;
 - 
 -         fPeaksCleared = true;
 -         /*
 -         ui.peak_in->displayMeter(1, 0.0, true);
 -         ui.peak_in->displayMeter(2, 0.0, true);
 -         ui.peak_out->displayMeter(1, 0.0, true);
 -         ui.peak_out->displayMeter(2, 0.0, true);
 -         */
 -     }
 - 
 -     void idleSlow()
 -     {
 -         getAndRefreshRuntimeInfo();
 - 
 -         if (fPluginCount == 0 || fCurrentlyRemovingAllPlugins)
 -             return;
 - 
 -         for (auto& pitem : fPluginList)
 -         {
 -             if (pitem == nullptr)
 -                 break;
 - 
 -             /*
 -             pitem->getWidget().idleSlow();
 -             */
 -         }
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // color/style change event
 - 
 -     void updateStyle()
 -     {
 -         // Rack padding images setup
 -         QImage rack_imgL(":/bitmaps/rack_padding_left.png");
 -         QImage rack_imgR(":/bitmaps/rack_padding_right.png");
 - 
 -         const qreal min_value = 0.07;
 - #if QT_VERSION >= 0x50600
 -         const qreal value_fix = 1.0/(1.0-rack_imgL.scaled(1, 1, Qt::IgnoreAspectRatio, Qt::SmoothTransformation).pixelColor(0,0).blackF());
 - #else
 -         const qreal value_fix = 1.5;
 - #endif
 - 
 -         const QColor bg_color = ui.rack->palette().window().color();
 -         const qreal  bg_value = 1.0 - bg_color.blackF();
 - 
 -         QColor pad_color;
 - 
 -         if (carla_isNotZero(bg_value) && bg_value < min_value)
 -             pad_color = bg_color.lighter(static_cast<int>(100*min_value/bg_value*value_fix));
 -         else
 -             pad_color = QColor::fromHsvF(0.0, 0.0, min_value*value_fix);
 - 
 -         QPainter painter;
 -         QRect fillRect(rack_imgL.rect().adjusted(-1,-1,1,1));
 - 
 -         painter.begin(&rack_imgL);
 -         painter.setCompositionMode(QPainter::CompositionMode_Multiply);
 -         painter.setBrush(pad_color);
 -         painter.drawRect(fillRect);
 -         painter.end();
 - 
 -         const QPixmap rack_pixmapL(QPixmap::fromImage(rack_imgL));
 -         QPalette imgL_palette; //(ui.pad_left->palette());
 -         imgL_palette.setBrush(QPalette::Window, QBrush(rack_pixmapL));
 -         ui.pad_left->setPalette(imgL_palette);
 -         ui.pad_left->setAutoFillBackground(true);
 - 
 -         painter.begin(&rack_imgR);
 -         painter.setCompositionMode(QPainter::CompositionMode_Multiply);
 -         painter.setBrush(pad_color);
 -         painter.drawRect(fillRect);
 -         painter.end();
 - 
 -         const QPixmap rack_pixmapR(QPixmap::fromImage(rack_imgR));
 -         QPalette imgR_palette; //(ui.pad_right->palette());
 -         imgR_palette.setBrush(QPalette::Window, QBrush(rack_pixmapR));
 -         ui.pad_right->setPalette(imgR_palette);
 -         ui.pad_right->setAutoFillBackground(true);
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // close event
 - 
 -     bool shouldIgnoreClose()
 -     {
 -         if (host.isControl || host.isPlugin)
 -             return false;
 -         if (fCustomStopAction == CUSTOM_ACTION_APP_CLOSE)
 -             return false;
 -         if (fSavedSettings._CARLA_KEY_MAIN_CONFIRM_EXIT)
 -             return QMessageBox::question(hostWindow,
 -                                          tr("Quit"),
 -                                          tr("Are you sure you want to quit Carla?"),
 -                                          QMessageBox::Yes|QMessageBox::No) == QMessageBox::No;
 -         return false;
 -     }
 - 
 -     CARLA_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(PrivateData)
 - };
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - 
 - CarlaHostWindow::CarlaHostWindow(CarlaHost& host, const bool withCanvas, QWidget* const parent)
 -     : QMainWindow(parent),
 -       self(new PrivateData(this, host, withCanvas))
 - {
 -     gCarla.gui = this;
 - 
 -     self->fIdleTimerNull = startTimer(1000);
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Set-up Canvas
 - 
 -     /*
 -     if (withCanvas)
 -     {
 -         self->scene = patchcanvas.PatchScene(self, self->ui.graphicsView);
 -         self->ui.graphicsView->setScene(self->scene);
 - 
 -         if (self->fSavedSettings[CARLA_KEY_CANVAS_USE_OPENGL])
 -         {
 -             self->ui.glView = QGLWidget(self);
 -             self->ui.graphicsView.setViewport(self->ui.glView);
 -         }
 - 
 -         setupCanvas();
 -     }
 -     */
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Connect actions to functions
 - 
 -     // TODO
 - 
 -     connect(self->ui.act_file_new, SIGNAL(triggered()), SLOT(slot_fileNew()));
 -     connect(self->ui.act_file_open, SIGNAL(triggered()), SLOT(slot_fileOpen()));
 -     connect(self->ui.act_file_save, SIGNAL(triggered()), SLOT(slot_fileSave()));
 -     connect(self->ui.act_file_save_as, SIGNAL(triggered()), SLOT(slot_fileSaveAs()));
 - 
 -     connect(self->ui.act_engine_start, SIGNAL(triggered()), SLOT(slot_engineStart()));
 -     connect(self->ui.act_engine_stop, SIGNAL(triggered()), SLOT(slot_engineStop()));
 -     connect(self->ui.act_engine_panic, SIGNAL(triggered()), SLOT(slot_pluginsDisable()));
 -     connect(self->ui.act_engine_config, SIGNAL(triggered()), SLOT(slot_engineConfig()));
 - 
 -     connect(self->ui.act_plugin_add, SIGNAL(triggered()), SLOT(slot_pluginAdd()));
 -     connect(self->ui.act_plugin_add_jack, SIGNAL(triggered()), SLOT(slot_jackAppAdd()));
 -     connect(self->ui.act_plugin_remove_all, SIGNAL(triggered()), SLOT(slot_confirmRemoveAll()));
 - 
 -     connect(self->ui.act_plugins_enable, SIGNAL(triggered()), SLOT(slot_pluginsEnable()));
 -     connect(self->ui.act_plugins_disable, SIGNAL(triggered()), SLOT(slot_pluginsDisable()));
 -     connect(self->ui.act_plugins_volume100, SIGNAL(triggered()), SLOT(slot_pluginsVolume100()));
 -     connect(self->ui.act_plugins_mute, SIGNAL(triggered()), SLOT(slot_pluginsMute()));
 -     connect(self->ui.act_plugins_wet100, SIGNAL(triggered()), SLOT(slot_pluginsWet100()));
 -     connect(self->ui.act_plugins_bypass, SIGNAL(triggered()), SLOT(slot_pluginsBypass()));
 -     connect(self->ui.act_plugins_center, SIGNAL(triggered()), SLOT(slot_pluginsCenter()));
 -     connect(self->ui.act_plugins_compact, SIGNAL(triggered()), SLOT(slot_pluginsCompact()));
 -     connect(self->ui.act_plugins_expand, SIGNAL(triggered()), SLOT(slot_pluginsExpand()));
 - 
 -     connect(self->ui.act_settings_show_toolbar, SIGNAL(toggled(bool)), SLOT(slot_showToolbar(bool)));
 -     connect(self->ui.act_settings_show_meters, SIGNAL(toggled(bool)), SLOT(slot_showCanvasMeters(bool)));
 -     connect(self->ui.act_settings_show_keyboard, SIGNAL(toggled(bool)), SLOT(slot_showCanvasKeyboard(bool)));
 -     connect(self->ui.act_settings_show_side_panel, SIGNAL(toggled(bool)), SLOT(slot_showSidePanel(bool)));
 -     connect(self->ui.act_settings_configure, SIGNAL(triggered()), SLOT(slot_configureCarla()));
 - 
 -     connect(self->ui.act_help_about, SIGNAL(triggered()), SLOT(slot_aboutCarla()));
 -     connect(self->ui.act_help_about_juce, SIGNAL(triggered()), SLOT(slot_aboutJuce()));
 -     connect(self->ui.act_help_about_qt, SIGNAL(triggered()), SLOT(slot_aboutQt()));
 - 
 -     connect(self->ui.cb_disk, SIGNAL(currentIndexChanged(int)), SLOT(slot_diskFolderChanged(int)));
 -     connect(self->ui.b_disk_add, SIGNAL(clicked()), SLOT(slot_diskFolderAdd()));
 -     connect(self->ui.b_disk_remove, SIGNAL(clicked()), SLOT(slot_diskFolderRemove()));
 -     connect(self->ui.fileTreeView, SIGNAL(doubleClicked(QModelIndex*)), SLOT(slot_fileTreeDoubleClicked(QModelIndex*)));
 - 
 -     connect(self->ui.b_transport_play, SIGNAL(clicked(bool)), SLOT(slot_transportPlayPause(bool)));
 -     connect(self->ui.b_transport_stop, SIGNAL(clicked()), SLOT(slot_transportStop()));
 -     connect(self->ui.b_transport_backwards, SIGNAL(clicked()), SLOT(slot_transportBackwards()));
 -     connect(self->ui.b_transport_forwards, SIGNAL(clicked()), SLOT(slot_transportForwards()));
 -     connect(self->ui.dsb_transport_bpm, SIGNAL(valueChanged(qreal)), SLOT(slot_transportBpmChanged(qreal)));
 -     connect(self->ui.cb_transport_jack, SIGNAL(clicked(bool)), SLOT(slot_transportJackEnabled(bool)));
 -     connect(self->ui.cb_transport_link, SIGNAL(clicked(bool)), SLOT(slot_transportLinkEnabled(bool)));
 - 
 -     connect(self->ui.b_xruns, SIGNAL(clicked()), SLOT(slot_xrunClear()));
 - 
 -     connect(self->ui.listWidget, SIGNAL(customContextMenuRequested()), SLOT(slot_showPluginActionsMenu()));
 - 
 -     /*
 -     connect(self->ui.keyboard, SIGNAL(noteOn(int)), SLOT(slot_noteOn(int)));
 -     connect(self->ui.keyboard, SIGNAL(noteOff(int)), SLOT(slot_noteOff(int)));
 -     */
 - 
 -     connect(self->ui.tabWidget, SIGNAL(currentChanged(int)), SLOT(slot_tabChanged(int)));
 - 
 -     if (withCanvas)
 -     {
 -         connect(self->ui.act_canvas_show_internal, SIGNAL(triggered()), SLOT(slot_canvasShowInternal()));
 -         connect(self->ui.act_canvas_show_external, SIGNAL(triggered()), SLOT(slot_canvasShowExternal()));
 -         connect(self->ui.act_canvas_arrange, SIGNAL(triggered()), SLOT(slot_canvasArrange()));
 -         connect(self->ui.act_canvas_refresh, SIGNAL(triggered()), SLOT(slot_canvasRefresh()));
 -         connect(self->ui.act_canvas_zoom_fit, SIGNAL(triggered()), SLOT(slot_canvasZoomFit()));
 -         connect(self->ui.act_canvas_zoom_in, SIGNAL(triggered()), SLOT(slot_canvasZoomIn()));
 -         connect(self->ui.act_canvas_zoom_out, SIGNAL(triggered()), SLOT(slot_canvasZoomOut()));
 -         connect(self->ui.act_canvas_zoom_100, SIGNAL(triggered()), SLOT(slot_canvasZoomReset()));
 -         connect(self->ui.act_canvas_save_image, SIGNAL(triggered()), SLOT(slot_canvasSaveImage()));
 -         self->ui.act_canvas_arrange->setEnabled(false); // TODO, later
 -         connect(self->ui.graphicsView->horizontalScrollBar(), SIGNAL(valueChanged(int)), SLOT(slot_horizontalScrollBarChanged(int)));
 -         connect(self->ui.graphicsView->verticalScrollBar(), SIGNAL(valueChanged(int)), SLOT(slot_verticalScrollBarChanged(int)));
 -         /*
 -         connect(self->ui.miniCanvasPreview, SIGNAL(miniCanvasMoved(qreal, qreal)), SLOT(slot_miniCanvasMoved(qreal, qreal)));
 -         connect(self.scene, SIGNAL(scaleChanged()), SLOT(slot_canvasScaleChanged()));
 -         connect(self.scene, SIGNAL(sceneGroupMoved()), SLOT(slot_canvasItemMoved()));
 -         connect(self.scene, SIGNAL(pluginSelected()), SLOT(slot_canvasPluginSelected()));
 -         connect(self.scene, SIGNAL(selectionChanged()), SLOT(slot_canvasSelectionChanged()));
 -         */
 -     }
 - 
 -     connect(&host, SIGNAL(SIGUSR1()), SLOT(slot_handleSIGUSR1()));
 -     connect(&host, SIGNAL(SIGTERM()), SLOT(slot_handleSIGTERM()));
 - 
 -     connect(&host, SIGNAL(EngineStartedCallback(uint, int, int, uint, float, QString)), SLOT(slot_handleEngineStartedCallback(uint, int, int, uint, float, QString)));
 -     connect(&host, SIGNAL(EngineStoppedCallback()), SLOT(slot_handleEngineStoppedCallback()));
 -     connect(&host, SIGNAL(TransportModeChangedCallback()), SLOT(slot_handleTransportModeChangedCallback()));
 -     connect(&host, SIGNAL(BufferSizeChangedCallback()), SLOT(slot_handleBufferSizeChangedCallback()));
 -     connect(&host, SIGNAL(SampleRateChangedCallback()), SLOT(slot_handleSampleRateChangedCallback()));
 -     connect(&host, SIGNAL(CancelableActionCallback()), SLOT(slot_handleCancelableActionCallback()));
 -     connect(&host, SIGNAL(ProjectLoadFinishedCallback()), SLOT(slot_handleProjectLoadFinishedCallback()));
 - 
 -     connect(&host, SIGNAL(PluginAddedCallback()), SLOT(slot_handlePluginAddedCallback()));
 -     connect(&host, SIGNAL(PluginRemovedCallback()), SLOT(slot_handlePluginRemovedCallback()));
 -     connect(&host, SIGNAL(ReloadAllCallback()), SLOT(slot_handleReloadAllCallback()));
 - 
 -     connect(&host, SIGNAL(NoteOnCallback()), SLOT(slot_handleNoteOnCallback()));
 -     connect(&host, SIGNAL(NoteOffCallback()), SLOT(slot_handleNoteOffCallback()));
 - 
 -     connect(&host, SIGNAL(UpdateCallback()), SLOT(slot_handleUpdateCallback()));
 - 
 -     connect(&host, SIGNAL(PatchbayClientAddedCallback()), SLOT(slot_handlePatchbayClientAddedCallback()));
 -     connect(&host, SIGNAL(PatchbayClientRemovedCallback()), SLOT(slot_handlePatchbayClientRemovedCallback()));
 -     connect(&host, SIGNAL(PatchbayClientRenamedCallback()), SLOT(slot_handlePatchbayClientRenamedCallback()));
 -     connect(&host, SIGNAL(PatchbayClientDataChangedCallback()), SLOT(slot_handlePatchbayClientDataChangedCallback()));
 -     connect(&host, SIGNAL(PatchbayPortAddedCallback()), SLOT(slot_handlePatchbayPortAddedCallback()));
 -     connect(&host, SIGNAL(PatchbayPortRemovedCallback()), SLOT(slot_handlePatchbayPortRemovedCallback()));
 -     connect(&host, SIGNAL(PatchbayPortChangedCallback()), SLOT(slot_handlePatchbayPortChangedCallback()));
 -     connect(&host, SIGNAL(PatchbayPortGroupAddedCallback()), SLOT(slot_handlePatchbayPortGroupAddedCallback()));
 -     connect(&host, SIGNAL(PatchbayPortGroupRemovedCallback()), SLOT(slot_handlePatchbayPortGroupRemovedCallback()));
 -     connect(&host, SIGNAL(PatchbayPortGroupChangedCallback()), SLOT(slot_handlePatchbayPortGroupChangedCallback()));
 - 
 -     connect(&host, SIGNAL(PatchbayConnectionAddedCallback()), SLOT(slot_handlePatchbayConnectionAddedCallback()));
 -     connect(&host, SIGNAL(PatchbayConnectionRemovedCallback()), SLOT(slot_handlePatchbayConnectionRemovedCallback()));
 - 
 -     connect(&host, SIGNAL(NSMCallback()), SLOT(slot_handleNSMCallback()));
 - 
 -     connect(&host, SIGNAL(DebugCallback()), SLOT(slot_handleDebugCallback()));
 -     connect(&host, SIGNAL(InfoCallback()), SLOT(slot_handleInfoCallback()));
 -     connect(&host, SIGNAL(ErrorCallback()), SLOT(slot_handleErrorCallback()));
 -     connect(&host, SIGNAL(QuitCallback()), SLOT(slot_handleQuitCallback()));
 -     connect(&host, SIGNAL(InlineDisplayRedrawCallback()), SLOT(slot_handleInlineDisplayRedrawCallback()));
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Final setup
 - 
 -     // Qt needs this so it properly creates & resizes the canvas
 -     self->ui.tabWidget->blockSignals(true);
 -     self->ui.tabWidget->setCurrentIndex(1);
 -     self->ui.tabWidget->setCurrentIndex(0);
 -     self->ui.tabWidget->blockSignals(false);
 - 
 -     // Start in patchbay tab if using forced patchbay mode
 -     if (host.processModeForced && host.processMode == ENGINE_PROCESS_MODE_PATCHBAY)
 -         self->ui.tabWidget->setCurrentIndex(1);
 - 
 -     // For NSM we wait for the open message
 -     if (NSM_URL != nullptr && host.nsmOK)
 -     {
 -         carla_nsm_ready(host.handle, NSM_CALLBACK_INIT);
 -         return;
 -     }
 - 
 -     if (! host.isControl)
 -         QTimer::singleShot(0, this, SLOT(slot_engineStart()));
 - }
 - 
 - CarlaHostWindow::~CarlaHostWindow()
 - {
 -     delete self;
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Plugin Editor Parent
 - 
 - void CarlaHostWindow::editDialogVisibilityChanged(int pluginId, bool visible)
 - {
 - }
 - 
 - void CarlaHostWindow::editDialogPluginHintsChanged(int pluginId, int hints)
 - {
 - }
 - 
 - void CarlaHostWindow::editDialogParameterValueChanged(int pluginId, int parameterId, float value)
 - {
 - }
 - 
 - void CarlaHostWindow::editDialogProgramChanged(int pluginId, int index)
 - {
 - }
 - 
 - void CarlaHostWindow::editDialogMidiProgramChanged(int pluginId, int index)
 - {
 - }
 - 
 - void CarlaHostWindow::editDialogNotePressed(int pluginId, int note)
 - {
 - }
 - 
 - void CarlaHostWindow::editDialogNoteReleased(int pluginId, int note)
 - {
 - }
 - 
 - void CarlaHostWindow::editDialogMidiActivityChanged(int pluginId, bool onOff)
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // show/hide event
 - 
 - void CarlaHostWindow::showEvent(QShowEvent* event)
 - {
 -     QMainWindow::showEvent(event);
 - }
 - 
 - void CarlaHostWindow::hideEvent(QHideEvent* event)
 - {
 -     QMainWindow::hideEvent(event);
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // resize event
 - 
 - void CarlaHostWindow::resizeEvent(QResizeEvent* event)
 - {
 -     QMainWindow::resizeEvent(event);
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // timer event
 - 
 - void CarlaHostWindow::timerEvent(QTimerEvent* const event)
 - {
 -     if (event->timerId() == self->fIdleTimerFast)
 -         self->idleFast();
 - 
 -     else if (event->timerId() == self->fIdleTimerSlow)
 -         self->idleSlow();
 - 
 -     QMainWindow::timerEvent(event);
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // color/style change event
 - 
 - void CarlaHostWindow::changeEvent(QEvent* const event)
 - {
 -     switch (event->type())
 -     {
 -     case QEvent::PaletteChange:
 -     case QEvent::StyleChange:
 -         self->updateStyle();
 -         break;
 -     default:
 -         break;
 -     }
 - 
 -     QMainWindow::changeEvent(event);
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // close event
 - 
 - void CarlaHostWindow::closeEvent(QCloseEvent* const event)
 - {
 -     if (self->shouldIgnoreClose())
 -     {
 -         event->ignore();
 -         return;
 -     }
 - 
 - #ifdef CARLA_OS_MAC
 -     if (self->fMacClosingHelper && ! (self->host.isControl || self->host.isPlugin))
 -     {
 -         self->fCustomStopAction = CUSTOM_ACTION_APP_CLOSE;
 -         self->fMacClosingHelper = false;
 -         event->ignore();
 - 
 -         for i in reversed(range(self->fPluginCount)):
 -             carla_show_custom_ui(self->host.handle, i, false);
 - 
 -         QTimer::singleShot(100, SIGNAL(close()));
 -         return;
 -     }
 - #endif
 - 
 -     self->killTimers();
 -     self->saveSettings();
 - 
 -     if (carla_is_engine_running(self->host.handle) && ! (self->host.isControl or self->host.isPlugin))
 -     {
 -         if (! slot_engineStop(true))
 -         {
 -             self->fCustomStopAction = CUSTOM_ACTION_APP_CLOSE;
 -             event->ignore();
 -             return;
 -         }
 -     }
 - 
 -     QMainWindow::closeEvent(event);
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Files (menu actions)
 - 
 - void CarlaHostWindow::slot_fileNew()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_fileOpen()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_fileSave(const bool saveAs)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_fileSaveAs()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_loadProjectNow()
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Engine (menu actions)
 - 
 - void CarlaHostWindow::slot_engineStart()
 - {
 -     const QString audioDriver = setEngineSettings(self->host);
 -     const bool firstInit = self->fFirstEngineInit;
 - 
 -     self->fFirstEngineInit = false;
 -     self->ui.text_logs->appendPlainText("======= Starting engine =======");
 - 
 -     if (carla_engine_init(self->host.handle, audioDriver.toUtf8(), self->fClientName.toUtf8()))
 -     {
 -         if (firstInit && ! (self->host.isControl or self->host.isPlugin))
 -         {
 -             QSafeSettings settings;
 -             const double lastBpm = settings.valueDouble("LastBPM", 120.0);
 -             if (lastBpm >= 20.0)
 -                 carla_transport_bpm(self->host.handle, lastBpm);
 -         }
 -         return;
 -     }
 -     else if (firstInit)
 -     {
 -         self->ui.text_logs->appendPlainText("Failed to start engine on first try, ignored");
 -         return;
 -     }
 - 
 -     const QCarlaString audioError(carla_get_last_error(self->host.handle));
 - 
 -     if (audioError.isNotEmpty())
 -     {
 -         QMessageBox::critical(this,
 -                               tr("Error"),
 -                               tr("Could not connect to Audio backend '%1', possible reasons:\n%2").arg(audioDriver).arg(audioError));
 -     }
 -     else
 -     {
 -         QMessageBox::critical(this,
 -                               tr("Error"),
 -                               tr("Could not connect to Audio backend '%1'").arg(audioDriver));
 -     }
 - }
 - 
 - bool CarlaHostWindow::slot_engineStop(const bool forced)
 - {
 -     self->ui.text_logs->appendPlainText("======= Stopping engine =======");
 - 
 -     if (self->fPluginCount == 0)
 -     {
 -         self->engineStopFinal();
 -         return true;
 -     }
 - 
 -     if (! forced)
 -     {
 -         const QMessageBox::StandardButton ask = QMessageBox::question(this,
 -             tr("Warning"),
 -             tr("There are still some plugins loaded, you need to remove them to stop the engine.\n"
 -                "Do you want to do this now?"),
 -             QMessageBox::Yes | QMessageBox::No, QMessageBox::No);
 - 
 -         if (ask != QMessageBox::Yes)
 -             return false;
 -     }
 - 
 -     return slot_engineStopTryAgain();
 - }
 - 
 - void CarlaHostWindow::slot_engineConfig()
 - {
 -     RuntimeDriverSettingsW dialog(self->host.handle, self->fParentOrSelf);
 - 
 -     if (dialog.exec())
 -         return;
 - 
 -     QString audioDevice;
 -     uint bufferSize;
 -     double sampleRate;
 -     dialog.getValues(audioDevice, bufferSize, sampleRate);
 - 
 -     if (carla_is_engine_running(self->host.handle))
 -     {
 -         carla_set_engine_buffer_size_and_sample_rate(self->host.handle, bufferSize, sampleRate);
 -     }
 -     else
 -     {
 -         carla_set_engine_option(self->host.handle, ENGINE_OPTION_AUDIO_DEVICE, 0, audioDevice.toUtf8());
 -         carla_set_engine_option(self->host.handle, ENGINE_OPTION_AUDIO_BUFFER_SIZE, static_cast<int>(bufferSize), "");
 -         carla_set_engine_option(self->host.handle, ENGINE_OPTION_AUDIO_SAMPLE_RATE, static_cast<int>(sampleRate), "");
 -     }
 - }
 - 
 - bool CarlaHostWindow::slot_engineStopTryAgain()
 - {
 -     if (carla_is_engine_running(self->host.handle) && ! carla_set_engine_about_to_close(self->host.handle))
 -     {
 -         QTimer::singleShot(0, this, SLOT(slot_engineStopTryAgain()));
 -         return false;
 -     }
 - 
 -     self->engineStopFinal();
 -     return true;
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Engine (host callbacks)
 - 
 - void CarlaHostWindow::slot_handleEngineStartedCallback(uint pluginCount, int processMode, int transportMode, uint bufferSize, float sampleRate, QString driverName)
 - {
 -     self->ui.menu_PluginMacros->setEnabled(true);
 -     self->ui.menu_Canvas->setEnabled(true);
 -     self->ui.w_transport->setEnabled(true);
 - 
 -     self->ui.act_canvas_show_internal->blockSignals(true);
 -     self->ui.act_canvas_show_external->blockSignals(true);
 - 
 -     if (processMode == ENGINE_PROCESS_MODE_PATCHBAY) // && ! self->host.isPlugin:
 -     {
 -         self->ui.act_canvas_show_internal->setChecked(true);
 -         self->ui.act_canvas_show_internal->setVisible(true);
 -         self->ui.act_canvas_show_external->setChecked(false);
 -         self->ui.act_canvas_show_external->setVisible(true);
 -         self->fExternalPatchbay = false;
 -     }
 -     else
 -     {
 -         self->ui.act_canvas_show_internal->setChecked(false);
 -         self->ui.act_canvas_show_internal->setVisible(false);
 -         self->ui.act_canvas_show_external->setChecked(true);
 -         self->ui.act_canvas_show_external->setVisible(false);
 -         self->fExternalPatchbay = true;
 -     }
 - 
 -     self->ui.act_canvas_show_internal->blockSignals(false);
 -     self->ui.act_canvas_show_external->blockSignals(false);
 - 
 -     if (! (self->host.isControl or self->host.isPlugin))
 -     {
 -         const bool canSave = (self->fProjectFilename.isNotEmpty() && QFile(self->fProjectFilename).exists()) || self->fSessionManagerName.isEmpty();
 -         self->ui.act_file_save->setEnabled(canSave);
 -         self->ui.act_engine_start->setEnabled(false);
 -         self->ui.act_engine_stop->setEnabled(true);
 -     }
 - 
 -     if (! self->host.isPlugin)
 -         self->enableTransport(transportMode != ENGINE_TRANSPORT_MODE_DISABLED);
 - 
 -     if (self->host.isPlugin || self->fSessionManagerName.isEmpty())
 -     {
 -         self->ui.act_file_open->setEnabled(true);
 -         self->ui.act_file_save_as->setEnabled(true);
 -     }
 - 
 -     self->ui.cb_transport_jack->setChecked(transportMode == ENGINE_TRANSPORT_MODE_JACK);
 -     self->ui.cb_transport_jack->setEnabled(driverName == "JACK" and processMode != ENGINE_PROCESS_MODE_MULTIPLE_CLIENTS);
 - 
 -     if (self->ui.cb_transport_link->isEnabled())
 -         self->ui.cb_transport_link->setChecked(self->host.transportExtra.contains(":link:"));
 - 
 -     self->updateBufferSize(bufferSize);
 -     self->updateSampleRate(sampleRate);
 -     self->refreshRuntimeInfo(0.0, 0);
 -     self->startTimers();
 - 
 -     self->ui.text_logs->appendPlainText("======= Engine started ========");
 -     self->ui.text_logs->appendPlainText("Carla engine started, details:");
 -     self->ui.text_logs->appendPlainText(QString("  Driver name:  %1").arg(driverName));
 -     self->ui.text_logs->appendPlainText(QString("  Sample rate:  %1").arg(int(sampleRate)));
 -     self->ui.text_logs->appendPlainText(QString("  Process mode: %1").arg(EngineProcessMode2Str((EngineProcessMode)processMode)));
 - }
 - 
 - void CarlaHostWindow::slot_handleEngineStoppedCallback()
 - {
 -     self->ui.text_logs->appendPlainText("======= Engine stopped ========");
 - 
 -     /*
 -     // TODO
 -     patchcanvas.clear();
 -     */
 -     self->killTimers();
 - 
 -     // just in case
 -     self->removeAllPlugins();
 -     self->refreshRuntimeInfo(0.0, 0);
 - 
 -     self->ui.menu_PluginMacros->setEnabled(false);
 -     self->ui.menu_Canvas->setEnabled(false);
 -     self->ui.w_transport->setEnabled(false);
 - 
 -     if (! (self->host.isControl || self->host.isPlugin))
 -     {
 -         self->ui.act_file_save->setEnabled(false);
 -         self->ui.act_engine_start->setEnabled(true);
 -         self->ui.act_engine_stop->setEnabled(false);
 -     }
 - 
 -     if (self->host.isPlugin || self->fSessionManagerName.isEmpty())
 -     {
 -         self->ui.act_file_open->setEnabled(false);
 -         self->ui.act_file_save_as->setEnabled(false);
 -     }
 - }
 - 
 - void CarlaHostWindow::slot_handleTransportModeChangedCallback(int transportMode, QString transportExtra)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handleBufferSizeChangedCallback(int newBufferSize)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handleSampleRateChangedCallback(double newSampleRate)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handleCancelableActionCallback(int pluginId, bool started, QString action)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_canlableActionBoxClicked()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handleProjectLoadFinishedCallback()
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Plugins (menu actions)
 - 
 - void CarlaHostWindow::slot_favoritePluginAdd()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_showPluginActionsMenu()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_pluginAdd()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_confirmRemoveAll()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_jackAppAdd()
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Plugins (macros)
 - 
 - void CarlaHostWindow::slot_pluginsEnable()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_pluginsDisable()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_pluginsVolume100()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_pluginsMute()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_pluginsWet100()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_pluginsBypass()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_pluginsCenter()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_pluginsCompact()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_pluginsExpand()
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Plugins (host callbacks)
 - 
 - void CarlaHostWindow::slot_handlePluginAddedCallback(int pluginId, QString pluginName)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handlePluginRemovedCallback(int pluginId)
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Canvas (menu actions)
 - 
 - void CarlaHostWindow::slot_canvasShowInternal()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_canvasShowExternal()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_canvasArrange()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_canvasRefresh()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_canvasZoomFit()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_canvasZoomIn()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_canvasZoomOut()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_canvasZoomReset()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_canvasSaveImage()
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Canvas (canvas callbacks)
 - 
 - void CarlaHostWindow::slot_canvasItemMoved(int group_id, int split_mode, QPointF pos)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_canvasSelectionChanged()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_canvasScaleChanged(double scale)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_canvasPluginSelected(QList<void*> pluginList)
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Canvas (host callbacks)
 - 
 - void CarlaHostWindow::slot_handlePatchbayClientAddedCallback(int clientId, int clientIcon, int pluginId, QString clientName)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handlePatchbayClientRemovedCallback(int clientId)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handlePatchbayClientRenamedCallback(int clientId, QString newClientName)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handlePatchbayClientDataChangedCallback(int clientId, int clientIcon, int pluginId)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handlePatchbayPortAddedCallback(int clientId, int portId, int portFlags, int portGroupId, QString portName)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handlePatchbayPortRemovedCallback(int groupId, int portId)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handlePatchbayPortChangedCallback(int groupId, int portId, int portFlags, int portGroupId, QString newPortName)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handlePatchbayPortGroupAddedCallback(int groupId, int portId, int portGroupId, QString newPortName)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handlePatchbayPortGroupRemovedCallback(int groupId, int portId)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handlePatchbayPortGroupChangedCallback(int groupId, int portId, int portGroupId, QString newPortName)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handlePatchbayConnectionAddedCallback(int connectionId, int groupOutId, int portOutId, int groupInId, int portInId)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handlePatchbayConnectionRemovedCallback(int connectionId, int portOutId, int portInId)
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Settings (helpers)
 - 
 - void CarlaHostWindow::slot_restoreCanvasScrollbarValues()
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Settings (menu actions)
 - 
 - void CarlaHostWindow::slot_showSidePanel(const bool yesNo)
 - {
 -     self->showSidePanel(yesNo);
 - }
 - 
 - void CarlaHostWindow::slot_showToolbar(const bool yesNo)
 - {
 -     self->showToolbar(yesNo);
 - }
 - 
 - void CarlaHostWindow::slot_showCanvasMeters(const bool yesNo)
 - {
 -     self->ui.peak_in->setVisible(yesNo);
 -     self->ui.peak_out->setVisible(yesNo);
 -     QTimer::singleShot(0, this, SLOT(slot_miniCanvasCheckAll()));
 - }
 - 
 - void CarlaHostWindow::slot_showCanvasKeyboard(const bool yesNo)
 - {
 -     /*
 -     // TODO
 -     self->ui.scrollArea->setVisible(yesNo);
 -     */
 -     QTimer::singleShot(0, this, SLOT(slot_miniCanvasCheckAll()));
 - }
 - 
 - void CarlaHostWindow::slot_configureCarla()
 - {
 -     const bool hasGL = true;
 -     CarlaSettingsW dialog(self->fParentOrSelf, self->host, true, hasGL);
 -     if (! dialog.exec())
 -         return;
 - 
 -     self->loadSettings(false);
 - 
 -     /*
 -     // TODO
 -     patchcanvas.clear()
 - 
 -     setupCanvas();
 -     */
 -     slot_miniCanvasCheckAll();
 - 
 -     if (self->host.processMode == ENGINE_PROCESS_MODE_CONTINUOUS_RACK && self->host.isPlugin)
 -         pass();
 -     else if (carla_is_engine_running(self->host.handle))
 -         carla_patchbay_refresh(self->host.handle, self->fExternalPatchbay);
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // About (menu actions)
 - 
 - void CarlaHostWindow::slot_aboutCarla()
 - {
 -     CarlaAboutW(self->fParentOrSelf, self->host).exec();
 - }
 - 
 - void CarlaHostWindow::slot_aboutJuce()
 - {
 -     JuceAboutW(self->fParentOrSelf).exec();
 - }
 - 
 - void CarlaHostWindow::slot_aboutQt()
 - {
 -     qApp->aboutQt();
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Disk (menu actions)
 - 
 - void CarlaHostWindow::slot_diskFolderChanged(int index)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_diskFolderAdd()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_diskFolderRemove()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_fileTreeDoubleClicked(QModelIndex* modelIndex)
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Transport (menu actions)
 - 
 - void CarlaHostWindow::slot_transportPlayPause(const bool toggled)
 - {
 -     if (self->host.isPlugin || ! carla_is_engine_running(self->host.handle))
 -         return;
 - 
 -     if (toggled)
 -         carla_transport_play(self->host.handle);
 -     else
 -         carla_transport_pause(self->host.handle);
 - 
 -     self->refreshTransport();
 - }
 - 
 - void CarlaHostWindow::slot_transportStop()
 - {
 -     if (self->host.isPlugin || ! carla_is_engine_running(self->host.handle))
 -         return;
 - 
 -     carla_transport_pause(self->host.handle);
 -     carla_transport_relocate(self->host.handle, 0);
 - 
 -     self->refreshTransport();
 - }
 - 
 - void CarlaHostWindow::slot_transportBackwards()
 - {
 -     if (self->host.isPlugin || ! carla_is_engine_running(self->host.handle))
 -         return;
 - 
 -     uint64_t newFrame = carla_get_current_transport_frame(self->host.handle);
 - 
 -     if (newFrame > 100000)
 -         newFrame -= 100000;
 -     else
 -         newFrame = 0;
 - 
 -     carla_transport_relocate(self->host.handle, newFrame);
 - }
 - 
 - void CarlaHostWindow::slot_transportBpmChanged(const qreal newValue)
 - {
 -     carla_transport_bpm(self->host.handle, newValue);
 - }
 - 
 - void CarlaHostWindow::slot_transportForwards()
 - {
 -     if (carla_isZero(self->fSampleRate) || self->host.isPlugin || ! carla_is_engine_running(self->host.handle))
 -         return;
 - 
 -     const uint64_t newFrame = carla_get_current_transport_frame(self->host.handle) + uint64_t(self->fSampleRate*2.5);
 -     carla_transport_relocate(self->host.handle, newFrame);
 - }
 - 
 - void CarlaHostWindow::slot_transportJackEnabled(const bool clicked)
 - {
 -     if (! carla_is_engine_running(self->host.handle))
 -         return;
 -     self->host.transportMode = clicked ? ENGINE_TRANSPORT_MODE_JACK : ENGINE_TRANSPORT_MODE_INTERNAL;
 -     carla_set_engine_option(self->host.handle, ENGINE_OPTION_TRANSPORT_MODE, self->host.transportMode, self->host.transportExtra.toUtf8());
 - }
 - 
 - void CarlaHostWindow::slot_transportLinkEnabled(const bool clicked)
 - {
 -     if (! carla_is_engine_running(self->host.handle))
 -         return;
 -     const char* const extra = clicked ? ":link:" : "";
 -     self->host.transportExtra = extra;
 -     carla_set_engine_option(self->host.handle, ENGINE_OPTION_TRANSPORT_MODE, self->host.transportMode, self->host.transportExtra.toUtf8());
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Other
 - 
 - void CarlaHostWindow::slot_xrunClear()
 - {
 -     carla_clear_engine_xruns(self->host.handle);
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Canvas scrollbars
 - 
 - void CarlaHostWindow::slot_horizontalScrollBarChanged(int value)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_verticalScrollBarChanged(int value)
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Canvas keyboard
 - 
 - void CarlaHostWindow::slot_noteOn(int note)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_noteOff(int note)
 - {
 - }
 - 
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Canvas keyboard (host callbacks)
 - 
 - void CarlaHostWindow::slot_handleNoteOnCallback(int pluginId, int channel, int note, int velocity)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handleNoteOffCallback(int pluginId, int channel, int note)
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - 
 - void CarlaHostWindow::slot_handleUpdateCallback(int pluginId)
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // MiniCanvas stuff
 - 
 - void CarlaHostWindow::slot_miniCanvasCheckAll()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_miniCanvasCheckSize()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_miniCanvasMoved(qreal xp, qreal yp)
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Misc
 - 
 - void CarlaHostWindow::slot_tabChanged(int index)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handleReloadAllCallback(int pluginId)
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - 
 - void CarlaHostWindow::slot_handleNSMCallback(int opcode, int valueInt, QString valueStr)
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - 
 - void CarlaHostWindow::slot_handleDebugCallback(int pluginId, int value1, int value2, int value3, float valuef, QString valueStr)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handleInfoCallback(QString info)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handleErrorCallback(QString error)
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handleQuitCallback()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handleInlineDisplayRedrawCallback(int pluginId)
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - 
 - void CarlaHostWindow::slot_handleSIGUSR1()
 - {
 - }
 - 
 - void CarlaHostWindow::slot_handleSIGTERM()
 - {
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Canvas callback
 - 
 - /*
 - static void _canvasCallback(void* const ptr, const int action, int value1, int value2, QString valueStr)
 - {
 -     CarlaHost* const host = (CarlaHost*)(ptr);
 -     CARLA_SAFE_ASSERT_RETURN(host != nullptr,);
 - 
 -     switch (action)
 -     {
 -     }
 - }
 - */
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Engine callback
 - 
 - static void _engineCallback(void* const ptr, const EngineCallbackOpcode action, uint pluginId, int value1, int value2, int value3, float valuef, const char* const valueStr)
 - {
 -     /*
 -     carla_stdout("_engineCallback(%p, %i:%s, %u, %i, %i, %i, %f, %s)",
 -                  ptr, action, EngineCallbackOpcode2Str(action), pluginId, value1, value2, value3, valuef, valueStr);
 -     */
 - 
 -     CarlaHost* const host = (CarlaHost*)(ptr);
 -     CARLA_SAFE_ASSERT_RETURN(host != nullptr,);
 - 
 -     switch (action)
 -     {
 -     case ENGINE_CALLBACK_ENGINE_STARTED:
 -         host->processMode   = static_cast<EngineProcessMode>(value1);
 -         host->transportMode = static_cast<EngineTransportMode>(value2);
 -         break;
 -     case ENGINE_CALLBACK_PROCESS_MODE_CHANGED:
 -         host->processMode   = static_cast<EngineProcessMode>(value1);
 -         break;
 -     case ENGINE_CALLBACK_TRANSPORT_MODE_CHANGED:
 -         host->transportMode  = static_cast<EngineTransportMode>(value1);
 -         host->transportExtra = valueStr;
 -         break;
 -     default:
 -         break;
 -     }
 - 
 -     // TODO
 -     switch (action)
 -     {
 -     case ENGINE_CALLBACK_ENGINE_STARTED:
 -         CARLA_SAFE_ASSERT_INT_RETURN(value3 >= 0, value3,);
 -         emit host->EngineStartedCallback(pluginId, value1, value2, static_cast<uint>(value3), valuef, valueStr);
 -         break;
 -     case ENGINE_CALLBACK_ENGINE_STOPPED:
 -         emit host->EngineStoppedCallback();
 -         break;
 - 
 -     // FIXME
 -     default:
 -         break;
 -     }
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // File callback
 - 
 - static const char* _fileCallback(void*, const FileCallbackOpcode action, const bool isDir, const char* const title, const char* const filter)
 - {
 -     QString ret;
 -     const QFileDialog::Options options = QFileDialog::Options(isDir ? QFileDialog::ShowDirsOnly : 0x0);
 - 
 -     switch (action)
 -     {
 -     case FILE_CALLBACK_DEBUG:
 -         break;
 -     case FILE_CALLBACK_OPEN:
 -         ret = QFileDialog::getOpenFileName(gCarla.gui, title, "", filter, nullptr, options);
 -         break;
 -     case FILE_CALLBACK_SAVE:
 -         ret = QFileDialog::getSaveFileName(gCarla.gui, title, "", filter, nullptr, options);
 -         break;
 -     }
 - 
 -     if (ret.isEmpty())
 -         return nullptr;
 - 
 -     static QByteArray byteRet;
 -     byteRet = ret.toUtf8();
 - 
 -     return byteRet.constData();
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Init host
 - 
 - CarlaHost& initHost(const QString initName, const bool isControl, const bool isPlugin, const bool failError)
 - {
 -     QString pathBinaries, pathResources;
 -     getPaths(pathBinaries, pathResources);
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Fail if binary dir is not found
 - 
 -     if (! QDir(pathBinaries).exists())
 -     {
 -         if (failError)
 -         {
 -             QMessageBox::critical(nullptr, "Error", "Failed to find the carla binaries, cannot continue");
 -             std::exit(1);
 -         }
 -         // FIXME?
 -         // return;
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Print info
 - 
 -     carla_stdout(QString("Carla %1 started, status:").arg(CARLA_VERSION_STRING).toUtf8());
 -     carla_stdout(QString("  Qt version:     %1").arg(QT_VERSION_STR).toUtf8());
 -     carla_stdout(QString("  Binary dir:     %1").arg(pathBinaries).toUtf8());
 -     carla_stdout(QString("  Resources dir:  %1").arg(pathResources).toUtf8());
 - 
 -     // ----------------------------------------------------------------------------------------------------------------
 -     // Init host
 - 
 -     // TODO
 -     if (failError)
 -     {
 - //         # no try
 - //         host = HostClass() if HostClass is not None else CarlaHostQtDLL(libname, loadGlobal)
 -     }
 -     else
 -     {
 - //         try:
 - //             host = HostClass() if HostClass is not None else CarlaHostQtDLL(libname, loadGlobal)
 - //         except:
 - //             host = CarlaHostQtNull()
 -     }
 - 
 -     static CarlaHost host;
 -     host.isControl = isControl;
 -     host.isPlugin  = isPlugin;
 - 
 -     // TODO
 -     if (isPlugin)
 -         pass();
 -     else if (isControl)
 -         pass();
 -     else
 -         host.handle = carla_standalone_host_init();
 - 
 -     carla_set_engine_callback(host.handle, _engineCallback, &host);
 -     carla_set_file_callback(host.handle, _fileCallback, nullptr);
 - 
 -     // If it's a plugin the paths are already set
 -     if (! isPlugin)
 -     {
 -         host.pathBinaries  = pathBinaries;
 -         host.pathResources = pathResources;
 -         carla_set_engine_option(host.handle, ENGINE_OPTION_PATH_BINARIES, 0, pathBinaries.toUtf8());
 -         carla_set_engine_option(host.handle, ENGINE_OPTION_PATH_RESOURCES, 0, pathResources.toUtf8());
 - 
 -         if (! isControl)
 -         {
 -             const pid_t pid = getpid();
 -             if (pid > 0)
 -                 host.nsmOK = carla_nsm_init(host.handle, static_cast<uint64_t>(pid), initName.toUtf8());
 -         }
 -     }
 - 
 -     // ----------------------------------------------------------------------------------------------------------------
 -     // Done
 - 
 -     gCarla.host = &host;
 -     return host;
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Load host settings
 - 
 - void loadHostSettings(CarlaHost& host)
 - {
 -     const QSafeSettings settings("falkTX", "Carla2");
 - 
 -     host.experimental = settings.valueBool(CARLA_KEY_MAIN_EXPERIMENTAL, CARLA_DEFAULT_MAIN_EXPERIMENTAL);
 -     host.exportLV2 = settings.valueBool(CARLA_KEY_EXPERIMENTAL_EXPORT_LV2, CARLA_DEFAULT_EXPERIMENTAL_LV2_EXPORT);
 -     host.manageUIs = settings.valueBool(CARLA_KEY_ENGINE_MANAGE_UIS, CARLA_DEFAULT_MANAGE_UIS);
 -     host.maxParameters = settings.valueUInt(CARLA_KEY_ENGINE_MAX_PARAMETERS, CARLA_DEFAULT_MAX_PARAMETERS);
 -     host.resetXruns = settings.valueBool(CARLA_KEY_ENGINE_RESET_XRUNS, CARLA_DEFAULT_RESET_XRUNS);
 -     host.forceStereo = settings.valueBool(CARLA_KEY_ENGINE_FORCE_STEREO, CARLA_DEFAULT_FORCE_STEREO);
 -     host.preferPluginBridges = settings.valueBool(CARLA_KEY_ENGINE_PREFER_PLUGIN_BRIDGES, CARLA_DEFAULT_PREFER_PLUGIN_BRIDGES);
 -     host.preferUIBridges = settings.valueBool(CARLA_KEY_ENGINE_PREFER_UI_BRIDGES, CARLA_DEFAULT_PREFER_UI_BRIDGES);
 -     host.preventBadBehaviour = settings.valueBool(CARLA_KEY_EXPERIMENTAL_PREVENT_BAD_BEHAVIOUR, CARLA_DEFAULT_EXPERIMENTAL_PREVENT_BAD_BEHAVIOUR);
 -     host.showLogs = settings.valueBool(CARLA_KEY_MAIN_SHOW_LOGS, CARLA_DEFAULT_MAIN_SHOW_LOGS);
 -     host.showPluginBridges = settings.valueBool(CARLA_KEY_EXPERIMENTAL_PLUGIN_BRIDGES, CARLA_DEFAULT_EXPERIMENTAL_PLUGIN_BRIDGES);
 -     host.showWineBridges = settings.valueBool(CARLA_KEY_EXPERIMENTAL_WINE_BRIDGES, CARLA_DEFAULT_EXPERIMENTAL_WINE_BRIDGES);
 -     host.uiBridgesTimeout = settings.valueUInt(CARLA_KEY_ENGINE_UI_BRIDGES_TIMEOUT, CARLA_DEFAULT_UI_BRIDGES_TIMEOUT);
 -     host.uisAlwaysOnTop = settings.valueBool(CARLA_KEY_ENGINE_UIS_ALWAYS_ON_TOP, CARLA_DEFAULT_UIS_ALWAYS_ON_TOP);
 - 
 -     if (host.isPlugin)
 -         return;
 - 
 -     host.transportExtra = settings.valueString(CARLA_KEY_ENGINE_TRANSPORT_EXTRA, "");
 - 
 -     // enums
 -     /*
 -     // TODO
 -     if (host.audioDriverForced.isNotEmpty())
 -         host.transportMode = settings.valueUInt(CARLA_KEY_ENGINE_TRANSPORT_MODE, CARLA_DEFAULT_TRANSPORT_MODE);
 - 
 -     if (! host.processModeForced)
 -         host.processMode = settings.valueUInt(CARLA_KEY_ENGINE_PROCESS_MODE, CARLA_DEFAULT_PROCESS_MODE);
 -     */
 - 
 -     host.nextProcessMode = host.processMode;
 - 
 -     // ----------------------------------------------------------------------------------------------------------------
 -     // fix things if needed
 - 
 -     if (host.processMode == ENGINE_PROCESS_MODE_MULTIPLE_CLIENTS)
 -     {
 -         if (LADISH_APP_NAME)
 -         {
 -             carla_stdout("LADISH detected but using multiple clients (not allowed), forcing single client now");
 -             host.nextProcessMode = host.processMode = ENGINE_PROCESS_MODE_SINGLE_CLIENT;
 -         }
 -         else
 -         {
 -             host.transportMode = ENGINE_TRANSPORT_MODE_JACK;
 -         }
 -     }
 - 
 -     if (gCarla.nogui)
 -         host.showLogs = false;
 - 
 -     // ----------------------------------------------------------------------------------------------------------------
 -     // run headless host now if nogui option enabled
 - 
 -     if (gCarla.nogui)
 -         runHostWithoutUI(host);
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Set host settings
 - 
 - void setHostSettings(const CarlaHost& host)
 - {
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_FORCE_STEREO,          host.forceStereo,         "");
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_MAX_PARAMETERS,        static_cast<int>(host.maxParameters), "");
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_PREFER_PLUGIN_BRIDGES, host.preferPluginBridges, "");
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_PREFER_UI_BRIDGES,     host.preferUIBridges,     "");
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_PREVENT_BAD_BEHAVIOUR, host.preventBadBehaviour, "");
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_UI_BRIDGES_TIMEOUT,    host.uiBridgesTimeout,    "");
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_UIS_ALWAYS_ON_TOP,     host.uisAlwaysOnTop,      "");
 - 
 -     if (host.isPlugin || host.isRemote || carla_is_engine_running(host.handle))
 -         return;
 - 
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_PROCESS_MODE,          host.nextProcessMode,     "");
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_TRANSPORT_MODE,        host.transportMode,       host.transportExtra.toUtf8());
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_DEBUG_CONSOLE_OUTPUT,  host.showLogs,            "");
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Set Engine settings according to carla preferences. Returns selected audio driver.
 - 
 - QString setEngineSettings(CarlaHost& host)
 - {
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // do nothing if control
 - 
 -     if (host.isControl)
 -         return "Control";
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 - 
 -     const QSafeSettings settings("falkTX", "Carla2");
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // main settings
 - 
 -     setHostSettings(host);
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // file paths
 - 
 -     QStringList FILE_PATH_AUDIO = settings.valueStringList(CARLA_KEY_PATHS_AUDIO, CARLA_DEFAULT_FILE_PATH_AUDIO);
 -     QStringList FILE_PATH_MIDI  = settings.valueStringList(CARLA_KEY_PATHS_MIDI,  CARLA_DEFAULT_FILE_PATH_MIDI);
 - 
 -     /*
 -     // TODO
 -     carla_set_engine_option(ENGINE_OPTION_FILE_PATH, FILE_AUDIO, splitter.join(FILE_PATH_AUDIO));
 -     carla_set_engine_option(ENGINE_OPTION_FILE_PATH, FILE_MIDI,  splitter.join(FILE_PATH_MIDI));
 -     */
 -     // CARLA_PATH_SPLITTER
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // plugin paths
 - 
 -     QStringList LADSPA_PATH = settings.valueStringList(CARLA_KEY_PATHS_LADSPA, CARLA_DEFAULT_LADSPA_PATH);
 -     QStringList DSSI_PATH   = settings.valueStringList(CARLA_KEY_PATHS_DSSI,   CARLA_DEFAULT_DSSI_PATH);
 -     QStringList LV2_PATH    = settings.valueStringList(CARLA_KEY_PATHS_LV2,    CARLA_DEFAULT_LV2_PATH);
 -     QStringList VST2_PATH   = settings.valueStringList(CARLA_KEY_PATHS_VST2,   CARLA_DEFAULT_VST2_PATH);
 -     QStringList VST3_PATH   = settings.valueStringList(CARLA_KEY_PATHS_VST3,   CARLA_DEFAULT_VST3_PATH);
 -     QStringList SF2_PATH    = settings.valueStringList(CARLA_KEY_PATHS_SF2,    CARLA_DEFAULT_SF2_PATH);
 -     QStringList SFZ_PATH    = settings.valueStringList(CARLA_KEY_PATHS_SFZ,    CARLA_DEFAULT_SFZ_PATH);
 -     QStringList JSFX_PATH   = settings.valueStringList(CARLA_KEY_PATHS_JSFX,   CARLA_DEFAULT_JSFX_PATH);
 - 
 -     /*
 -     // TODO
 -     carla_set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_LADSPA, splitter.join(LADSPA_PATH))
 -     carla_set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_DSSI,   splitter.join(DSSI_PATH))
 -     carla_set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_LV2,    splitter.join(LV2_PATH))
 -     carla_set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_VST2,   splitter.join(VST2_PATH))
 -     carla_set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_VST3,   splitter.join(VST3_PATH))
 -     carla_set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_SF2,    splitter.join(SF2_PATH))
 -     carla_set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_SFZ,    splitter.join(SFZ_PATH))
 -     carla_set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_JSFX,   splitter.join(JSFX_PATH))
 -     */
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // don't continue if plugin
 - 
 -     if (host.isPlugin)
 -         return "Plugin";
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // osc settings
 - 
 -     const bool oscEnabled = settings.valueBool(CARLA_KEY_OSC_ENABLED, CARLA_DEFAULT_OSC_ENABLED);
 - 
 -     int portNumTCP, portNumUDP;
 - 
 -     if (! settings.valueBool(CARLA_KEY_OSC_TCP_PORT_ENABLED, CARLA_DEFAULT_OSC_TCP_PORT_ENABLED))
 -         portNumTCP = -1;
 -     else if (settings.valueBool(CARLA_KEY_OSC_TCP_PORT_RANDOM, CARLA_DEFAULT_OSC_TCP_PORT_RANDOM))
 -         portNumTCP = 0;
 -     else
 -         portNumTCP = settings.valueIntPositive(CARLA_KEY_OSC_TCP_PORT_NUMBER, CARLA_DEFAULT_OSC_TCP_PORT_NUMBER);
 - 
 -     if (! settings.valueBool(CARLA_KEY_OSC_UDP_PORT_ENABLED, CARLA_DEFAULT_OSC_UDP_PORT_ENABLED))
 -         portNumUDP = -1;
 -     else if (settings.valueBool(CARLA_KEY_OSC_UDP_PORT_RANDOM, CARLA_DEFAULT_OSC_UDP_PORT_RANDOM))
 -         portNumUDP = 0;
 -     else
 -         portNumUDP = settings.valueIntPositive(CARLA_KEY_OSC_UDP_PORT_NUMBER, CARLA_DEFAULT_OSC_UDP_PORT_NUMBER);
 - 
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_OSC_ENABLED, oscEnabled ? 1 : 0, "");
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_OSC_PORT_TCP, portNumTCP, "");
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_OSC_PORT_UDP, portNumUDP, "");
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // wine settings
 - 
 -     const QString optWineExecutable = settings.valueString(CARLA_KEY_WINE_EXECUTABLE, CARLA_DEFAULT_WINE_EXECUTABLE);
 -     const bool optWineAutoPrefix = settings.valueBool(CARLA_KEY_WINE_AUTO_PREFIX, CARLA_DEFAULT_WINE_AUTO_PREFIX);
 -     const QString optWineFallbackPrefix = settings.valueString(CARLA_KEY_WINE_FALLBACK_PREFIX, CARLA_DEFAULT_WINE_FALLBACK_PREFIX);
 -     const bool optWineRtPrioEnabled = settings.valueBool(CARLA_KEY_WINE_RT_PRIO_ENABLED, CARLA_DEFAULT_WINE_RT_PRIO_ENABLED);
 -     const int optWineBaseRtPrio = settings.valueIntPositive(CARLA_KEY_WINE_BASE_RT_PRIO,   CARLA_DEFAULT_WINE_BASE_RT_PRIO);
 -     const int optWineServerRtPrio = settings.valueIntPositive(CARLA_KEY_WINE_SERVER_RT_PRIO, CARLA_DEFAULT_WINE_SERVER_RT_PRIO);
 - 
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_WINE_EXECUTABLE, 0, optWineExecutable.toUtf8());
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_WINE_AUTO_PREFIX, optWineAutoPrefix ? 1 : 0, "");
 -     /*
 -     // TODO
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_WINE_FALLBACK_PREFIX, 0, os.path.expanduser(optWineFallbackPrefix));
 -     */
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_WINE_RT_PRIO_ENABLED, optWineRtPrioEnabled ? 1 : 0, "");
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_WINE_BASE_RT_PRIO, optWineBaseRtPrio, "");
 -     carla_set_engine_option(host.handle, ENGINE_OPTION_WINE_SERVER_RT_PRIO, optWineServerRtPrio, "");
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // driver and device settings
 - 
 -     QString audioDriver;
 - 
 -     // driver name
 -     if (host.audioDriverForced.isNotEmpty())
 -         audioDriver = host.audioDriverForced;
 -     else
 -         audioDriver = settings.valueString(CARLA_KEY_ENGINE_AUDIO_DRIVER, CARLA_DEFAULT_AUDIO_DRIVER);
 - 
 -     // driver options
 -     const QString prefix(QString("%1%2").arg(CARLA_KEY_ENGINE_DRIVER_PREFIX).arg(audioDriver));
 -     const QString audioDevice = settings.valueString(QString("%1/Device").arg(prefix), "");
 -     const int audioBufferSize = settings.valueIntPositive(QString("%1/BufferSize").arg(prefix), CARLA_DEFAULT_AUDIO_BUFFER_SIZE);
 -     const int audioSampleRate = settings.valueIntPositive(QString("%1/SampleRate").arg(prefix), CARLA_DEFAULT_AUDIO_SAMPLE_RATE);
 -     const bool audioTripleBuffer = settings.valueBool(QString("%1/TripleBuffer").arg(prefix), CARLA_DEFAULT_AUDIO_TRIPLE_BUFFER);
 - 
 -     // Only setup audio things if engine is not running
 -     if (! carla_is_engine_running(host.handle))
 -     {
 -         carla_set_engine_option(host.handle, ENGINE_OPTION_AUDIO_DRIVER, 0, audioDriver.toUtf8());
 -         carla_set_engine_option(host.handle, ENGINE_OPTION_AUDIO_DEVICE, 0, audioDevice.toUtf8());
 - 
 -         if (! audioDriver.startsWith("JACK"))
 -         {
 -             carla_set_engine_option(host.handle, ENGINE_OPTION_AUDIO_BUFFER_SIZE, audioBufferSize, "");
 -             carla_set_engine_option(host.handle, ENGINE_OPTION_AUDIO_SAMPLE_RATE, audioSampleRate, "");
 -             carla_set_engine_option(host.handle, ENGINE_OPTION_AUDIO_TRIPLE_BUFFER, audioTripleBuffer ? 1 : 0, "");
 -         }
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // fix things if needed
 - 
 -     if (audioDriver != "JACK" && host.transportMode == ENGINE_TRANSPORT_MODE_JACK)
 -     {
 -         host.transportMode = ENGINE_TRANSPORT_MODE_INTERNAL;
 -         carla_set_engine_option(host.handle,
 -                                 ENGINE_OPTION_TRANSPORT_MODE,
 -                                 ENGINE_TRANSPORT_MODE_INTERNAL,
 -                                 host.transportExtra.toUtf8());
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // return selected driver name
 - 
 -     return audioDriver;
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 - // Run Carla without showing UI
 - 
 - void runHostWithoutUI(CarlaHost& host)
 - {
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Some initial checks
 - 
 -     if (! gCarla.nogui)
 -         return;
 - 
 -     const QString projectFile = getInitialProjectFile(true);
 - 
 -     if (projectFile.isEmpty())
 -     {
 -         carla_stdout("Carla no-gui mode can only be used together with a project file.");
 -         std::exit(1);
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Init engine
 - 
 -     const QString audioDriver = setEngineSettings(host);
 - 
 -     if (! carla_engine_init(host.handle, audioDriver.toUtf8(), "Carla"))
 -     {
 -         carla_stdout("Engine failed to initialize, possible reasons:\n%s", carla_get_last_error(host.handle));
 -         std::exit(1);
 -     }
 - 
 -     if (! carla_load_project(host.handle, projectFile.toUtf8()))
 -     {
 -         carla_stdout("Failed to load selected project file, possible reasons:\n%s", carla_get_last_error(host.handle));
 -         carla_engine_close(host.handle);
 -         std::exit(1);
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Idle
 - 
 -     carla_stdout("Carla ready!");
 - 
 -     while (carla_is_engine_running(host.handle) && ! gCarla.term)
 -     {
 -         carla_engine_idle(host.handle);
 -         carla_msleep(33); // 30 Hz
 -     }
 - 
 -     //-----------------------------------------------------------------------------------------------------------------
 -     // Stop
 - 
 -     carla_engine_close(host.handle);
 -     std::exit(0);
 - }
 - 
 - //---------------------------------------------------------------------------------------------------------------------
 
 
  |