mapvisualization.py

    A model to store a list of map views.

    """
    sigMapViewsAdded = pyqtSignal(list)
    sigMapViewsRemoved = pyqtSignal(list)

    def __init__(self, parent=None):
        super(MapViewListModel, self).__init__(parent)
        self.mMapViewList = []



    def addMapView(self, mapView):
        i = len(self.mMapViewList)
        self.insertMapView(i, mapView)

    def insertMapView(self, i, mapView):
        self.insertMapViews(i, [mapView])

    def insertMapViews(self, i, mapViews):
        assert isinstance(mapViews, list)
        assert i >= 0 and i <= len(self.mMapViewList)

        self.beginInsertRows(QModelIndex(), i, i + len(mapViews) - 1)

        for j in range(len(mapViews)):
            mapView = mapViews[j]
            assert isinstance(mapView, MapView)
            mapView.sigTitleChanged.connect(
                lambda : self.doRefresh([mapView])
            )
            self.mMapViewList.insert(i + j, mapView)
        self.endInsertRows()
        self.sigMapViewsAdded.emit(mapViews)


    def doRefresh(self, mapViews):
        for mapView in mapViews:
            idx = self.mapView2idx(mapView)
            self.dataChanged.emit(idx, idx)

    def removeMapView(self, mapView):
        self.removeMapViews([mapView])

    def removeMapViews(self, mapViews):
        assert isinstance(mapViews, list)
        for mv in mapViews:
            assert mv in self.mMapViewList
            idx = self.mapView2idx(mv)
            self.beginRemoveRows(idx.parent(), idx.row(), idx.row())
            self.mMapViewList.remove(mv)
            self.endRemoveRows()
        self.sigMapViewsRemoved.emit(mapViews)

    def rowCount(self, parent=None, *args, **kwargs):
        return len(self.mMapViewList)

    def columnCount(self, QModelIndex_parent=None, *args, **kwargs):
        return 1


    def idx2MapView(self, index):
        if isinstance(index, QModelIndex):
            if index.isValid():
                index = index.row()
            else:
                return None
        assert index >= 0 and index < len(self.mMapViewList)
        return self.mMapViewList[index]


    def mapView2idx(self, mapView):
        assert isinstance(mapView, MapView)
        row = self.mMapViewList.index(mapView)
        return self.createIndex(row, 0, mapView)

    def __len__(self):
        return len(self.mMapViewList)

    def __iter__(self):
        return iter(self.mMapViewList)

    def __getitem__(self, slice):
        return self.mMapViewList[slice]

    def data(self, index, role=Qt.DisplayRole):
        if not index.isValid():
            return None

        if (index.row() >= len(self.mMapViewList)) or (index.row() < 0):
            return None

        mapView = self.idx2MapView(index)
        assert isinstance(mapView, MapView)

        value = None

        if role == Qt.DisplayRole:
            value = '{} {}'.format(index.row() +1 , mapView.title())
        #if role == Qt.DecorationRole:
            #value = classInfo.icon(QSize(20,20))
        if role == Qt.UserRole:
            value = mapView
        return value

class MapViewDock(QgsDockWidget, loadUI('mapviewdock.ui')):

    sigMapViewAdded = pyqtSignal(MapView)
    sigMapViewRemoved = pyqtSignal(MapView)
    sigShowProfiles = pyqtSignal(SpatialPoint, MapCanvas, str)

    sigMapCanvasColorChanged = pyqtSignal(QColor)
    sigSpatialExtentChanged = pyqtSignal(SpatialExtent)
    sigCrsChanged = pyqtSignal(QgsCoordinateReferenceSystem)
    sigMapSizeChanged = pyqtSignal(QSize)

    def setTimeSeries(self, timeSeries:TimeSeries):
        assert isinstance(timeSeries, TimeSeries)
        self.mTimeSeries = timeSeries
        self.mTimeSeries.sigSensorAdded.connect(self.addSensor)
        self.mTimeSeries.sigSensorRemoved.connect(self.removeSensor)

    def __init__(self, parent=None):
        super(MapViewDock, self).__init__(parent)
        self.setupUi(self)

        self.baseTitle = self.windowTitle()

        self.btnAddMapView.setDefaultAction(self.actionAddMapView)
        self.btnRemoveMapView.setDefaultAction(self.actionRemoveMapView)

        self.btnCrs.crsChanged.connect(self.sigCrsChanged)
        self.btnMapCanvasColor.colorChanged.connect(self.onMapCanvasBackgroundColorChanged)
        self.btnApplySizeChanges.clicked.connect(lambda : self.sigMapSizeChanged.emit(QSize(self.spinBoxMapSizeX.value(),self.spinBoxMapSizeY.value())))

        self.actionAddMapView.triggered.connect(self.createMapView)
        self.actionRemoveMapView.triggered.connect(lambda : self.removeMapView(self.currentMapView()) if self.currentMapView() else None)
        self.actionApplyStyles.triggered.connect(self.refreshCurrentMapView)

        self.toolBox.currentChanged.connect(self.onToolboxIndexChanged)

        self.spinBoxMapSizeX.valueChanged.connect(lambda: self.onMapSizeChanged('X'))
        self.spinBoxMapSizeY.valueChanged.connect(lambda: self.onMapSizeChanged('Y'))
        self.mLastMapSize = self.mapSize()

        self.mTimeSeries = None


    def mapViews(self)->list:
        """
        Returns the defined MapViews
        :return: [list-of-MapViews]
        """
        assert isinstance(self.toolBox, QToolBox)
        mapViews = []
        for i in range(self.toolBox.count()):
            item = self.toolBox.widget(i)
            if isinstance(item, MapView):
                mapViews.append(item)
        return mapViews

    def mapCanvases(self)->list:
        """
        Returns all MapCanvases from all MapViews
        :return: [list-of-MapCanvases]
        """

        maps = []
        for mapView in self.mapViews():
            assert isinstance(mapView, MapView)
            maps.extend(mapView.mapCanvases())
        return maps

    def setCrs(self, crs):
        if isinstance(crs, QgsCoordinateReferenceSystem):
            old = self.btnCrs.crs()
            if old != crs:
                self.btnCrs.setCrs(crs)
                self.btnCrs.setLayerCrs(crs)


    def setMapSize(self, size):
        assert isinstance(size, QSize)
        ws = [self.spinBoxMapSizeX, self.spinBoxMapSizeY]
        oldSize = self.mapSize()
        b = oldSize != size
        for w in ws:
            w.blockSignals(True)

        self.spinBoxMapSizeX.setValue(size.width()),
        self.spinBoxMapSizeY.setValue(size.height())
        self.mLastMapSize = QSize(size)
        for w in ws:
            w.blockSignals(False)
        self.mLastMapSize = QSize(size)
        if b:
            self.sigMapSizeChanged.emit(size)

    def onMapSizeChanged(self, dim):
        newSize = self.mapSize()
        #1. set size of other dimension accordingly
        if dim is not None:
            if self.checkBoxKeepSubsetAspectRatio.isChecked():
                if dim == 'X':
                    vOld = self.mLastMapSize.width()
                    vNew = newSize.width()
                    targetSpinBox = self.spinBoxMapSizeY
                elif dim == 'Y':
                    vOld = self.mLastMapSize.height()
                    vNew = newSize.height()
                    targetSpinBox = self.spinBoxMapSizeX

                oldState = targetSpinBox.blockSignals(True)
                targetSpinBox.setValue(int(round(float(vNew) / vOld * targetSpinBox.value())))
                targetSpinBox.blockSignals(oldState)
                newSize = self.mapSize()
            if newSize != self.mLastMapSize:
                self.btnApplySizeChanges.setEnabled(True)
        else:
            self.sigMapSizeChanged.emit(self.mapSize())
            self.btnApplySizeChanges.setEnabled(False)
        self.setMapSize(newSize)

    def mapSize(self):
        return QSize(self.spinBoxMapSizeX.value(),
                     self.spinBoxMapSizeY.value())


    def refreshCurrentMapView(self, *args):
        mv = self.currentMapView()
        if isinstance(mv, MapView):
            mv.refreshMapView()
        else:
            s  =""


    def dummySlot(self):
        s  =""

    def onMapViewsRemoved(self, mapViews):

        for mapView in mapViews:
            idx = self.stackedWidget.indexOf(mapView.ui)
            if idx >= 0:
                self.stackedWidget.removeWidget(mapView.ui)
                mapView.ui.close()
            else:
                s = ""


        self.actionRemoveMapView.setEnabled(len(self.mMapViews) > 0)


    def mapBackgroundColor(self)->QColor:
        """
        Returns the map canvas background color
        :return: QColor
        """
        return self.btnMapCanvasColor.color()


    def setMapBackgroundColor(self, color:QColor):
        """
        Sets the MapCanvas background color
        :param color: QColor
        """
        if color != self.mapBackgroundColor():
            self.btnMapCanvasColor.setColor(color)


    def onMapCanvasBackgroundColorChanged(self, color:QColor):
        """
        Reacts on a changes map color
        :param color: QColor
        """
        assert isinstance(color, QColor)
        self.mColor = color
        for mapCanvas in self.mapCanvases():
            assert isinstance(mapCanvas, MapCanvas)
            mapCanvas.addToRefreshPipeLine(color)

        self.sigMapCanvasColorChanged.emit(color)


    def onMapViewsAdded(self, mapViews):
        nextShown = None
        for mapView in mapViews:
            mapView.sigTitleChanged.connect(self.updateTitle)
            self.stackedWidget.addWidget(mapView.ui)
            if nextShown is None:
                nextShown = mapView

            contents = mapView.ui.scrollAreaWidgetContents
            size = contents.size()
            hint = contents.sizeHint()
            #mapView.ui.scrollArea.update()
            s = ""
            #setMinimumSize(mapView.ui.scrollAreaWidgetContents.sizeHint())
            #hint = contents.sizeHint()
            #contents.setMinimumSize(hint)
        if isinstance(nextShown, MapView):
            self.setCurrentMapView(nextShown)

        for mapView in mapViews:
            self.sigMapViewAdded.emit(mapView)

    def updateButtons(self, *args):
        b = len(self.mMapViews) > 0
        self.actionRemoveMapView.setEnabled(b)
        self.actionApplyStyles.setEnabled(b)
        self.actionHighlightMapView.setEnabled(b)


    def createMapView(self)->MapView:
        """
        Create a new MapView
        :return: MapView
        """

        mapView = MapView()

        n = len(self.mapViews()) + 1
        title = 'Map View {}'.format(n)
        while title in [m.title() for m in self.mapViews()]:
            n += 1
            title = 'Map View {}'.format(n)
        mapView.setTitle(title)
        mapView.sigShowProfiles.connect(self.sigShowProfiles)

        mapView.setTimeSeries(self.mTimeSeries)
        self.addMapView(mapView)
        return mapView



    def addMapView(self, mapView:MapView):
        """
        Adds a MapView
        :param mapView: MapView
        """
        assert isinstance(mapView, MapView)
        mapView.sigTitleChanged.connect(lambda *args, mv=mapView : self.onMapViewUpdated(mv))
        mapView.sigMapViewVisibility.connect(lambda *args, mv=mapView : self.onMapViewUpdated(mv))

        i = self.toolBox.addItem(mapView, mapView.windowIcon(), mapView.title())
        self.toolBox.setCurrentIndex(i)
        self.onMapViewUpdated(mapView)
        self.sigMapViewAdded.emit(mapView)

    def onToolboxIndexChanged(self):

        b = isinstance(self.toolBox.currentWidget(), MapView)
        self.actionRemoveMapView.setEnabled(b)

    def onMapViewUpdated(self, mapView:MapView):
        """
        Handles updates that react on MapView changes
        :param mapView: MapView to make the update for
        """
        numMV = 0
        for i in range(self.toolBox.count()):
            item = self.toolBox.widget(i)
            if isinstance(item, MapView):
                numMV += 1
            if item == mapView:

                if mapView.isVisible():
                    icon = QIcon(":/timeseriesviewer/icons/mapview.svg")
                else:
                    icon = QIcon(":/timeseriesviewer/icons/mapviewHidden.svg")

                self.toolBox.setItemIcon(i, icon)
                self.toolBox.setItemText(i, 'Map View {} "{}"'.format(numMV, mapView.title()))
                break

    def removeMapView(self, mapView:MapView)->MapView:
        """
        Removes a MapView
        :param mapView: MapView
        :return: MapView
        """
        assert mapView in self.mapViews()
        for i in range(self.toolBox.count()):
            w = self.toolBox.widget(i)
            if isinstance(w, MapView) and w == mapView:
                self.toolBox.removeItem(i)
                mapView.close()
                if self.toolBox.count() >= i:
                    self.toolBox.setCurrentIndex(min(i, self.toolBox.count()-1))

        self.sigMapViewRemoved.emit(mapView)
        return mapView



    def __len__(self)->int:
        """
        Returns the number of MapViews
        :return: int
        """
        return len(self.mapViews())

    def __iter__(self):
        """
        Provides an iterator over all MapViews
        :return:
        """
        return iter(self.mapViews())

    def __getitem__(self, slice):
        return self.mapViews()[slice]

    def __contains__(self, mapView):
        return mapView in self.mapViews()

    def index(self, mapView):
        assert isinstance(mapView, MapView)
        return self.mapViews().index(mapView)

    def addSensor(self, sensor:SensorInstrument):
        """
        Adds a new SensorInstrument
        :param sensor: SensorInstrument
        """
        for mapView in self.mapViews():
            mapView.addSensor(sensor)


    def removeSensor(self, sensor:SensorInstrument):
        """
        Removes a Sensor
        :param sensor: SensorInstrument
        """
        for mapView in self.mMapViews:
            mapView.removeSensor(sensor)

    def applyStyles(self):
        for mapView in self.mMapViews:
            mapView.applyStyles()

    def setCrosshairStyle(self, crosshairStyle):
        for mapView in self.mMapViews:
            mapView.setCrosshairStyle(crosshairStyle)

    def setShowCrosshair(self, b):
        for mapView in self.mMapViews:
            mapView.setCrosshairVisibility(b)

    def index(self, mapView):
        assert isinstance(mapView, MapView)
        return self.mapViewsDefinitions.index(mapView)


    def setCurrentMapView(self, mapView):
        assert isinstance(mapView, MapView) and mapView in self.mMapViews
        idx = self.stackedWidget.indexOf(mapView.ui)
        if idx >= 0:
            self.stackedWidget.setCurrentIndex(idx)
            self.cbMapView.setCurrentIndex(self.mMapViews.mapView2idx(mapView).row())

        self.updateTitle()

    def updateTitle(self, *args):
        # self.btnToggleMapViewVisibility.setChecked(mapView)
        mapView = self.currentMapView()
        if isinstance(mapView, MapView):
            if mapView in self.mMapViews:
                i = str(self.mMapViews.mapView2idx(mapView).row()+1)
            else:
                i = ''
            #title = '{} | {} "{}"'.format(self.baseTitle, i, mapView.title())
            title = '{} | {}'.format(self.baseTitle, i)
            self.setWindowTitle(title)

    def currentMapView(self):
        w = self.toolBox.currentWidget()
        if isinstance(w, MapView):
            return w
        return None



class SpatialTemporalVisualization(QObject):
    """

    """
    sigLoadingStarted = pyqtSignal(DatumView, MapView)
    sigLoadingFinished = pyqtSignal(DatumView, MapView)
    sigShowProfiles = pyqtSignal(SpatialPoint, MapCanvas, str)
    sigShowMapLayerInfo = pyqtSignal(dict)
    sigSpatialExtentChanged = pyqtSignal(SpatialExtent)
    sigMapSizeChanged = pyqtSignal(QSize)
    sigCRSChanged = pyqtSignal(QgsCoordinateReferenceSystem)
    sigActivateMapTool = pyqtSignal(str)
    sigMapViewAdded = pyqtSignal(MapView)
    sigMapViewRemoved = pyqtSignal(MapView)

    def __init__(self, timeSeriesViewer):
        super(SpatialTemporalVisualization, self).__init__()
        # assert isinstance(timeSeriesViewer, TimeSeriesViewer), timeSeriesViewer

        # default map settings
        self.mSpatialExtent = SpatialExtent.world()
        self.mCRS = self.mSpatialExtent.crs()
        self.mSize = QSize(200, 200)
        self.mColor = Qt.black
        self.mMapCanvases = []
        self.ui = timeSeriesViewer.ui

        # map-tool handling
        self.mMapTools = []

        self.scrollArea = self.ui.scrollAreaSubsets
        assert isinstance(self.scrollArea, MapViewScrollArea)

        # self.scrollArea.sigResized.connect(self.refresh())
        # self.scrollArea.horizontalScrollBar().valueChanged.connect(self.mRefreshTimer.start)

        self.TSV = timeSeriesViewer
        self.TS = timeSeriesViewer.timeSeries()
        self.ui.dockMapViews.setTimeSeries(self.TS)
        self.targetLayout = self.ui.scrollAreaSubsetContent.layout()

        self.MVC = self.ui.dockMapViews
        assert isinstance(self.MVC, MapViewDock)
        self.MVC.sigShowProfiles.connect(self.sigShowProfiles.emit)
        self.MVC.sigMapViewAdded.connect(self.onMapViewAdded)
        self.MVC.sigMapViewAdded.connect(self.sigMapViewAdded.emit)
        self.MVC.sigMapViewRemoved.connect(self.sigMapViewRemoved.emit)
        self.vectorOverlay = None

        self.DVC = DateViewCollection(self)
        self.DVC.sigResizeRequired.connect(self.adjustScrollArea)

        self.TS.sigTimeSeriesDatesAdded.connect(self.DVC.addDates)
        self.TS.sigTimeSeriesDatesRemoved.connect(self.DVC.removeDates)

        self.DVC.addDates(self.TS[:])
        if len(self.TS) > 0:
            self.setSpatialExtent(self.TS.maxSpatialExtent())
        #self.setSubsetSize(QSize(100,50))

        self.mMapRefreshTimer = QTimer(self)
        self.mMapRefreshTimer.timeout.connect(self.timedCanvasRefresh)
        self.mMapRefreshTimer.setInterval(500)
        self.mMapRefreshTimer.start()
        self.mNumberOfHiddenMapsToRefresh = 2
        self.mCurrentLayer = None

        self.mSyncLock = False

    def setCurrentLayer(self, layer):

        assert layer is None or isinstance(layer, QgsMapLayer)
        self.mCurrentLayer = layer
        for canvas in self.mapCanvases():
            assert isinstance(canvas, QgsMapCanvas)
            canvas.setCurrentLayer(layer)

    def syncQGISCanvasCenter(self, qgisChanged:bool):

        if self.mSyncLock:
            return

        iface = qgis.utils.iface
        assert isinstance(iface, QgisInterface)

        c = iface.mapCanvas()
        assert isinstance(c, QgsMapCanvas)
        tsvCenter = self.spatialExtent().spatialCenter()
        qgsCenter = SpatialExtent.fromMapCanvas(c).spatialCenter()

        if qgisChanged:
            # change TSV
            if tsvCenter.crs().isValid():
                self.mSyncLock = True
                qgsCenter = qgsCenter.toCrs(tsvCenter.crs())
                self.setSpatialCenter(qgsCenter)
        else:
            # change QGIS
            if qgsCenter.crs().isValid():
                self.mSyncLock = True
                tsvCenter = tsvCenter.toCrs(qgsCenter.crs())
                c.setCenter(tsvCenter)
            else:
                pass


    def timedCanvasRefresh(self, *args, force:bool=False):

        self.mSyncLock = False

        # do refresh maps
        assert isinstance(self.scrollArea, MapViewScrollArea)

        visibleMaps = [m for m in self.mapCanvases() if m.isVisibleToViewport()]

        hiddenMaps = sorted([m for m in self.mapCanvases() if not m.isVisibleToViewport()],
                            key = lambda c : self.scrollArea.distanceToCenter(c) )

        n = 0
        # redraw all visible maps
        for c in visibleMaps:
            assert isinstance(c, MapCanvas)
            c.timedRefresh()
            n += 1

        if n < 10:
            # refresh up to mNumberOfHiddenMapsToRefresh maps which are not visible to the user
            i = 0
            for c in hiddenMaps:
                assert isinstance(c, MapCanvas)
                c.timedRefresh()
                i += 1
                if i >= self.mNumberOfHiddenMapsToRefresh and not force:
                    break

    def mapViewFromCanvas(self, mapCanvas:MapCanvas)->MapView:
        """
        Returns the MapView a mapCanvas belongs to
        :param mapCanvas: MapCanvas
        :return: MapView
        """
        for mapView in self.MVC:
            assert isinstance(mapView, MapView)
            if mapCanvas in mapView.mapCanvases():
                return mapView
        return None

    def onMapViewAdded(self, *args):
        self.adjustScrollArea()
        s = ""
    def createMapView(self)->MapView:
        """
        Create a new MapWiew
        :return: MapView
        """
        return self.MVC.createMapView()


    def registerMapCanvas(self, mapCanvas:MapCanvas):
        """
        Connects a MapCanvas and its signals
        :param mapCanvas: MapCanvas
        """
        from eotimeseriesviewer.mapcanvas import MapCanvas
        assert isinstance(mapCanvas, MapCanvas)

        mapCanvas.setMapLayerStore(self.TSV.mMapLayerStore)
        mapCanvas.sigCrosshairPositionChanged.connect(lambda point, canvas=mapCanvas: self.TSV.setCurrentLocation(point, canvas))
        self.mMapCanvases.append(mapCanvas)


        # set general canvas properties
        mapCanvas.setFixedSize(self.mSize)
        mapCanvas.setDestinationCrs(self.mCRS)
        mapCanvas.setSpatialExtent(self.mSpatialExtent)


        # register on map canvas signals
        def onChanged(e, mapCanvas0=None):
            #self.setSpatialExtent(e, mapCanvas0=mapCanvas0)
            self.setSpatialExtent(e)
        #mapCanvas.sigSpatialExtentChanged.connect(lambda e: self.setSpatialExtent(e, mapCanvas0=mapCanvas))
        #mapCanvas.sigSpatialExtentChanged.connect(lambda e: onChanged(e, mapCanvas0=mapCanvas))
        mapCanvas.sigSpatialExtentChanged.connect(self.setSpatialExtent)
        mapCanvas.sigCrosshairPositionChanged.connect(self.onCrosshairChanged)

    def onCrosshairChanged(self, spatialPoint:SpatialPoint):
        """
        Synchronizes all crosshair positions. Takes care of CRS differences.
        :param spatialPoint: SpatialPoint of new Crosshair position
        """
        from eotimeseriesviewer import CrosshairStyle

        srcCanvas = self.sender()
        if isinstance(srcCanvas, MapCanvas):
            dstCanvases = [c for c in self.mapCanvases() if c != srcCanvas]
        else:
            dstCanvases = [c for c in self.mapCanvases()]

        if isinstance(spatialPoint, SpatialPoint):
            for mapCanvas in dstCanvases:
                mapCanvas.setCrosshairPosition(spatialPoint, emitSignal=False)


    def setCrosshairStyle(self, crosshairStyle:CrosshairStyle):
        """
        Sets a crosshair style to all map canvas
        :param crosshairStyle: CrosshairStyle

        """
        for mapView in self.mapViews():
            assert isinstance(mapView, MapView)
            mapView.setCrosshairStyle(crosshairStyle)


    def setCrosshairVisibility(self, b:bool):
        """
        Sets the Crosshair visiblity
        :param b: bool
        """
        assert isinstance(b, bool)
        self.onCrosshairChanged(b)


    def setVectorLayer(self, lyr:QgsVectorLayer):
        """
        Sets a QgsVectorLaye to be shown on top of raster images
        :param lyr: QgsVectorLayer
        """
        self.MVC.setVectorLayer(lyr)



    def setMapSize(self, size):
        assert isinstance(size, QSize)
        self.mSize = size
        from eotimeseriesviewer.mapcanvas import MapCanvas
        for mapCanvas in self.mMapCanvases:
            assert isinstance(mapCanvas, MapCanvas)
            mapCanvas.setFixedSize(size)
        self.sigMapSizeChanged.emit(self.mSize)
        self.adjustScrollArea()

    def mapSize(self)->QSize:
        """
        Returns the MapCanvas size
        :return: QSize
        """
        return QSize(self.mSize)


    def refresh(self):
        """
        Refreshes all visible MapCanvases
        """
        for c in self.mapCanvases():
            assert isinstance(c, MapCanvas)
            c.refresh()

        #self.mMapRefreshTimer.stop()

    def adjustScrollArea(self):
        """
        Adjusts the scroll area widget to fit all visible widgets
        """

        m = self.targetLayout.contentsMargins()
        nX = len(self.DVC)
        w = h = 0

        s = QSize()
        r = None
        tsdViews = [v for v in self.DVC if v.ui.isVisible()]
        mapViews = [v for v in self.MVC if v.isVisible()]
        nX = len(tsdViews)
        nY = len(mapViews)
        spacing = self.targetLayout.spacing()
        margins = self.targetLayout.contentsMargins()

        sizeX = 1
        sizeY = 50
        if nX > 0:
            s = tsdViews[0].ui.sizeHint().width()
            s = nX * (s + spacing) + margins.left() + margins.right()
            sizeX = s
        if nY > 0 and nX > 0:
                s = tsdViews[0].ui.sizeHint().height()
                s = s + margins.top() + margins.bottom()
                sizeY = s

            #s = tsdViews[0].ui.sizeHint()
            #s = QSize(nX * (s.width() + spacing) + margins.left() + margins.right(),
            #          s.height() + margins.top() + margins.bottom())

        #print(sizeX, sizeY)
        self.targetLayout.parentWidget().resize(QSize(sizeX, sizeY))

    def setMapTool(self, mapToolKey, *args, **kwds):
        """
        Create a maptool instance to each MapCanvas
        :param mapToolKey: str which MapTool is to create, or QgsMapTool instance
        :param args: optional maptool arguments
        :param kwds: optional maptool keywords
        :return: [list-of-QgsMapTools]
        """

        del self.mMapTools[:]

        from eotimeseriesviewer import MapTools, CursorLocationMapTool, SpectralProfileMapTool, TemporalProfileMapTool
        for canvas in self.mMapCanvases:
            mt = None
            if mapToolKey in MapTools.mapToolKeys():
                mt = MapTools.create(mapToolKey, canvas, *args, **kwds)

            if isinstance(mapToolKey, QgsMapTool):
                mt = MapTools.copy(mapToolKey, canvas, *args, **kwds)

            if isinstance(mt, QgsMapTool):
                canvas.setMapTool(mt)
                self.mMapTools.append(mt)

                # if required, link map-tool with specific slots
                if isinstance(mt, CursorLocationMapTool):
                    mt.sigLocationRequest[SpatialPoint, QgsMapCanvas].connect(self.onLocationRequest)

        return self.mMapTools

    def onLocationRequest(self, pt:SpatialPoint, canvas:QgsMapCanvas):

        self.sigShowProfiles.emit(pt, canvas, "")

    def setSpatialCenter(self, center:SpatialPoint, mapCanvas0=None):
        """
        Sets the spatial center of all MapCanvases
        :param center: SpatialPoint
        :param mapCanvas0:
        """
        assert isinstance(center, SpatialPoint)

        extent = self.spatialExtent()

        if isinstance(extent, SpatialExtent):
            centerOld = extent.center()
            center = center.toCrs(extent.crs())
            if center != centerOld:
                extent = extent.__copy__()
                extent.setCenter(center)
                self.setSpatialExtent(extent)


    def spatialCenter(self)->SpatialPoint:
        return self.spatialExtent().spatialCenter()


    def setSpatialExtent(self, extent, mapCanvas0=None):
        """
        Sets the spatial extent of all MapCanvases
        :param extent: SpatialExtent
        :param mapCanvas0:
        :return:
        """
        lastExtent = self.spatialExtent()

        assert isinstance(extent, SpatialExtent)
        extent = extent.toCrs(self.crs())
        if not isinstance(extent, SpatialExtent) \
            or extent.isEmpty() or not extent.isFinite() \
            or extent.width() <= 0 \
            or extent.height() <= 0 \
            or extent == self.mSpatialExtent:
            return

        if self.mSpatialExtent == extent:
            return

        self.mSpatialExtent = extent
        for mapCanvas in self.mapCanvases():
            assert isinstance(mapCanvas, MapCanvas)
            mapCanvas.addToRefreshPipeLine(extent)

        if lastExtent != extent:
            self.sigSpatialExtentChanged.emit(extent)


    def mapViewDock(self)->MapViewDock:
        """
        Returns the MapViewDock that controls all MapViews
        :return: MapViewDock
        """
        return self.MVC

    def setMapBackgroundColor(self, color:QColor):
        """
        Sets the MapCanvas background color
        :param color: QColor
        """
        assert isinstance(self.MVC, MapViewDock)
        self.MVC.setMapBackgroundColor(color)



    def mapCanvases(self, mapView=None)->list:
        """
        Returns MapCanvases
        :param mapView: a MapView to return MapCanvases from only, defaults to None
        :return: [list-of-MapCanvas]
        """
        if isinstance(mapView, MapView):
            s = ""
        return self.mMapCanvases[:]

    def mapViews(self)->list:
        """
        Returns a list of all mapviews
        :return [list-of-MapViews]:
        """
        return self.MVC[:]

    def setCrs(self, crs):
        assert isinstance(crs, QgsCoordinateReferenceSystem)

        if self.mCRS != crs:
            transform = QgsCoordinateTransform()
            transform.setSourceCrs(self.mCRS)
            transform.setDestinationCrs(crs)
            if transform.isValid() and not transform.isShortCircuited():
                self.mCRS = crs
                for mapCanvas in self.mapCanvases():
                    # print(('STV set CRS {} {}', str(mapCanvas), self.mCRS.description()))
                    mapCanvas.setDestinationCrs(QgsCoordinateReferenceSystem(crs))
                """
                from timeseriesviewer.utils import saveTransform
                if saveTransform(self.mSpatialExtent, self.mCRS, crs):
                    self.mCRS = crs
                    
                else:
                    pass
                """
                self.sigCRSChanged.emit(self.crs())


    def crs(self)->QgsCoordinateReferenceSystem:
        """
        Returns the QgsCoordinateReferenceSystem
        :return: QgsCoordinateReferenceSystem
        """
        return self.mCRS

    def spatialExtent(self)->SpatialExtent:
        """
        Returns the SpatialExtent
        :return: SpatialExtent
        """
        return self.mSpatialExtent



    def navigateToTSD(self, TSD:TimeSeriesDatum):
        """
        Changes the viewport of the scroll window to show the requested TimeSeriesDatum
        :param TSD: TimeSeriesDatum
        """
        assert isinstance(TSD, TimeSeriesDatum)
        #get widget related to TSD
        tsdv = self.DVC.tsdView(TSD)
        assert isinstance(self.scrollArea, QScrollArea)
        self.scrollArea.ensureWidgetVisible(tsdv.ui)