mapvisualization.py

    def registerMapCanvas(self, mapView, mapCanvas):

        from timeseriesviewer.mapcanvas import MapCanvas
        assert isinstance(mapCanvas, MapCanvas)
        assert isinstance(mapView, MapView)
        self.mapCanvases[mapView] = mapCanvas



        mapView.sigTitleChanged[unicode].connect(lambda title : mapCanvas.setSaveFileName('{}_{}'.format(self.TSD.date, title)))
        mapCanvas.layerModel().setRasterLayerSources([self.TSD.pathImg])

        self.ui.layout().insertWidget(self.wOffset + len(self.mapCanvases), mapCanvas)
        self.ui.update()

        #register signals handled on (this) DV level
        mapCanvas.renderStarting.connect(lambda: self.sigLoadingStarted.emit(mapView, self.TSD))
        mapCanvas.mapCanvasRefreshed.connect(lambda: self.sigLoadingFinished.emit(mapView, self.TSD))
        mapCanvas.sigShowProfiles.connect(lambda c, t : mapView.sigShowProfiles.emit(c,mapCanvas, t))
        mapCanvas.sigChangeDVRequest.connect(self.onMapCanvasRequest)



    def onMapCanvasRequest(self, mapCanvas, key):

        if key == 'hide_date':
            self.TSD.setVisibility(False)
        if key == 'copy_sensor':
            QApplication.clipboard().setText(self.TSD.sensor.name())
        if key == 'copy_date':
            QApplication.clipboard().setText(str(self.TSD.date))
        if key == 'copy_path':
            QApplication.clipboard().setText(str(self.TSD.pathImg))

    def __lt__(self, other):
        assert isinstance(other, DatumView)
        return self.TSD < other.TSD

    def __eq__(self, other):
        assert isinstance(other, DatumView)
        return self.TSD == other.TSD

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)

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

        #default map settings
        self.mBlockCanvasSignals = False
        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.mMapToolActivator = None
        self.mMapTools = []

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


        self.mRefreshTimer = QTimer(self)
        self.mRefreshTimer.setInterval(1000)
        self.mRefreshTimer.timeout.connect(self.refresh)

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


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



        #self.MVC = MapViewCollection(self)
        #self.MVC.sigShowProfiles.connect(self.sigShowProfiles.emit)

        self.MVC = self.ui.dockMapViews
        assert isinstance(self.MVC, MapViewCollectionDock)
        self.MVC.sigShowProfiles.connect(self.sigShowProfiles.emit)

        self.vectorOverlay = None

        self.DVC = DateViewCollection(self)
        self.DVC.sigResizeRequired.connect(self.adjustScrollArea)
        self.DVC.sigLoadingStarted.connect(self.ui.dockRendering.addStartedWork)
        self.DVC.sigLoadingFinished.connect(self.ui.dockRendering.addFinishedWork)
        #self.timeSeriesDateViewCollection.sigSpatialExtentChanged.connect(self.setSpatialExtent)
        self.TS.sigTimeSeriesDatesAdded.connect(self.DVC.addDates)
        self.TS.sigTimeSeriesDatesRemoved.connect(self.DVC.removeDates)
        #add dates, if already existing
        self.DVC.addDates(self.TS[:])
        if len(self.TS) > 0:
            self.setSpatialExtent(self.TS.getMaxSpatialExtent())
        #self.setSubsetSize(QSize(100,50))

    def createMapView(self):
        self.MVC.createMapView()

    def registerMapCanvas(self, mapCanvas):
        from timeseriesviewer.mapcanvas import MapCanvas
        assert isinstance(mapCanvas, MapCanvas)


        self.mMapCanvases.append(mapCanvas)

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


        #register on map canvas signals
        mapCanvas.sigSpatialExtentChanged.connect(lambda e: self.setSpatialExtent(e, mapCanvas))



    def setCrosshairStyle(self, crosshairStyle):
        from timeseriesviewer.mapcanvas import MapCanvas
        for mapCanvas in self.mMapCanvases:
            assert isinstance(mapCanvas, MapCanvas)
            mapCanvas.setCrosshairStyle(crosshairStyle)

        #self.MVC.setCrosshairStyle(crosshairStyle)

    def setShowCrosshair(self, b):
        self.MVC.setShowCrosshair(b)

    def setVectorLayer(self, lyr):
        self.MVC.setVectorLayer(lyr)



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

    def subsetSize(self):
        return QSize(self.mSize)


    def refresh(self):
        #print('STV REFRESH')
        for tsdView in self.DVC:
            tsdView.refresh()
        self.mRefreshTimer.stop()

    def adjustScrollArea(self):
        #adjust 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:
            if nX > 0:
                s = tsdViews[0].ui.sizeHint().height()
                s = s + margins.top() + margins.bottom()
            else:
                s = 50
            sizeY = s

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

        self.targetLayout.parentWidget().setFixedSize(QSize(sizeX, sizeY))

    def setMapTool(self, mapToolKey, *args, **kwds):
        # filter map tools
        self.mMapToolActivator = self.sender()
        del self.mMapTools[:]

        from timeseriesviewer.mapcanvas 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 EnMAP-Box slots
                if isinstance(mt, CursorLocationMapTool):
                    mt.sigLocationRequest[SpatialPoint, QgsMapCanvas].connect(lambda c, m : self.sigShowProfiles.emit(c,m, mapToolKey))

        return self.mMapTools



    def setMaxTSDViews(self, n=-1):
        self.nMaxTSDViews = n
        #todo: remove views

    def setSpatialCenter(self, center, mapCanvas0=None):
        if self.mBlockCanvasSignals:
            return True

        assert isinstance(center, SpatialPoint)
        center = center.toCrs(self.mCRS)
        if not isinstance(center, SpatialPoint):
            return

        self.mBlockCanvasSignals = True
        self.mSpatialExtent.setCenter(center)
        for mapCanvas in self.mMapCanvases:
            if mapCanvas != mapCanvas0:
                oldState = mapCanvas.blockSignals(True)
                mapCanvas.setCenter(center)
                mapCanvas.blockSignals(oldState)
        self.mBlockCanvasSignals = False

        self.sigSpatialExtentChanged.emit(self.mSpatialExtent)


    def setSpatialExtent(self, extent, mapCanvas0=None):
        if self.mBlockCanvasSignals:
            return True

        assert isinstance(extent, SpatialExtent)
        extent = extent.toCrs(self.mCRS)
        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

        self.mBlockCanvasSignals = True
        self.mSpatialExtent = extent
        for mapCanvas in self.mMapCanvases:
            if mapCanvas != mapCanvas0:
                oldState = mapCanvas.blockSignals(True)
                mapCanvas.setExtent(extent)
                mapCanvas.blockSignals(oldState)

        self.mBlockCanvasSignals = False
        #for mapCanvas in self.mMapCanvases:
        #    mapCanvas.refresh()
        self.mRefreshTimer.start()
        self.sigSpatialExtentChanged.emit(extent)

    def setBackgroundColor(self, color):
        assert isinstance(color, QColor)
        self.mColor = color
        for mapCanvas in self.mMapCanvases:
            assert isinstance(mapCanvas, MapCanvas)
            mapCanvas.setCanvasColor(color)
            mapCanvas.refresh()

    def backgroundColor(self):
        return self.mColor


    def mapCanvasIterator(self):
        return self.mMapCanvases[:]

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

        if self.mCRS != crs:
            from timeseriesviewer.utils import saveTransform
            if saveTransform(self.mSpatialExtent, self.mCRS, crs):
                self.mCRS = crs
                for mapCanvas in self.mapCanvasIterator():
                    #print(('STV set CRS {} {}', str(mapCanvas), self.mCRS.description()))
                    mapCanvas.setCrs(crs)
            else:
                pass
            self.sigCRSChanged.emit(self.mCRS)


    def crs(self):
        return self.mCRS

    def spatialExtent(self):
        return self.mSpatialExtent



    def navigateToTSD(self, TSD):
        assert isinstance(TSD, TimeSeriesDatum)
        #get widget related to TSD
        tsdv = self.DVC.tsdView(TSD)
        assert isinstance(self.scrollArea, QScrollArea)
        self.scrollArea.ensureWidgetVisible(tsdv.ui)


class DateViewCollection(QObject):

    sigResizeRequired = pyqtSignal()
    sigLoadingStarted = pyqtSignal(MapView, TimeSeriesDatum)
    sigLoadingFinished = pyqtSignal(MapView, TimeSeriesDatum)
    sigShowProfiles = pyqtSignal(SpatialPoint)
    sigSpatialExtentChanged = pyqtSignal(SpatialExtent)

    def __init__(self, STViz):
        assert isinstance(STViz, SpatialTemporalVisualization)
        super(DateViewCollection, self).__init__()
        #self.tsv = tsv
        #self.timeSeries = tsv.TS

        self.views = list()
        self.STV = STViz
        self.ui = self.STV.targetLayout.parentWidget()
        self.scrollArea = self.ui.parentWidget().parentWidget()
        #potentially there are many more dates than views.
        #therefore we implement the addinng/removing of mapviews here
        #we reduce the number of layout refresh calls by
        #suspending signals, adding the new map view canvases, and sending sigResizeRequired

        self.STV.MVC.sigMapViewAdded.connect(self.addMapView)
        self.STV.MVC.sigMapViewRemoved.connect(self.removeMapView)

        self.setFocusView(None)


    def tsdFromMapCanvas(self, mapCanvas):
        assert isinstance(mapCanvas, MapCanvas)
        for view in self.views:
            assert isinstance(view, DatumView)
            if mapCanvas in view.mapCanvases.values():
                return view.TSD
        return None

    def tsdView(self, tsd):
        r = [v for v in self.views if v.TSD == tsd]
        if len(r) == 1:
            return r[0]
        else:
            raise Exception('TSD not in list')

    def addMapView(self, mapView):
        assert isinstance(mapView, MapView)
        w = self.ui
        w.setUpdatesEnabled(False)
        for tsdv in self.views:
            tsdv.ui.setUpdatesEnabled(False)

        for tsdv in self.views:
            tsdv.insertMapView(mapView)

        for tsdv in self.views:
            tsdv.ui.setUpdatesEnabled(True)

        #mapView.sigSensorRendererChanged.connect(lambda *args : self.setRasterRenderer(mapView, *args))
        mapView.sigMapViewVisibility.connect(lambda: self.sigResizeRequired.emit())
        mapView.sigShowProfiles.connect(self.sigShowProfiles.emit)
        w.setUpdatesEnabled(True)

        self.sigResizeRequired.emit()

    def removeMapView(self, mapView):
        assert isinstance(mapView, MapView)
        for tsdv in self.views:
            tsdv.removeMapView(mapView)
        self.sigResizeRequired.emit()


    def highlightDate(self, tsd):
        """
        Highlights a time series data for a specific time our
        :param tsd:
        :return:
        """
        tsdView = self.tsdView(tsd)
        if isinstance(tsdView, DatumView):
            tsdView.setHighlight(True)

    def setFocusView(self, tsd):
        self.focusView = tsd

    def orderedViews(self):
        #returns the
        if self.focusView is not None:
            assert isinstance(self.focusView, DatumView)
            return sorted(self.views,key=lambda v: np.abs(v.TSD.date - self.focusView.TSD.date))
        else:
            return self.views

    """
    def setSubsetSize(self, size):
        assert isinstance(size, QSize)
        self.subsetSize = size

        for tsdView in self.orderedViews():
            tsdView.blockSignals(True)

        for tsdView in self.orderedViews():
            tsdView.setSubsetSize(size)

        for tsdView in self.orderedViews():
            tsdView.blockSignals(False)
    """


    def addDates(self, tsdList):
        """
        Create a new TSDView
        :param tsdList:
        :return:
        """
        for tsd in tsdList:
            assert isinstance(tsd, TimeSeriesDatum)
            DV = DatumView(tsd, self.STV, parent=self.ui)
            #tsdView.setSubsetSize(self.subsetSize)
            DV.sigLoadingStarted.connect(self.sigLoadingStarted.emit)
            DV.sigLoadingFinished.connect(self.sigLoadingFinished.emit)
            DV.sigVisibilityChanged.connect(lambda: self.STV.adjustScrollArea())


            for i, mapView in enumerate(self.STV.MVC):
                DV.insertMapView(mapView)

            bisect.insort(self.views, DV)
            i = self.views.index(DV)

            DV.ui.setParent(self.STV.targetLayout.parentWidget())
            self.STV.targetLayout.insertWidget(i, DV.ui)
            DV.ui.show()

        if len(tsdList) > 0:
            self.sigResizeRequired.emit()

    def removeDates(self, tsdList):
        toRemove = [v for v in self.views if v.TSD in tsdList]
        removedDates = []
        for DV in toRemove:
            self.views.remove(DV)

            for mapCanvas in DV.mapCanvases.values():
                toRemove = mapCanvas.layers()
                mapCanvas.setLayers([])
                toRemove = [l for l in toRemove if isinstance(l, QgsRasterLayer)]
                if len(toRemove) > 0:
                    QgsProject.instance().removeMapLayers(toRemove)

            DV.ui.parent().layout().removeWidget(DV.ui)
            DV.ui.hide()
            DV.ui.close()
            removedDates.append(DV.TSD)
            del DV

        if len(removedDates) > 0:
            self.sigResizeRequired.emit()

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

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

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

    def __delitem__(self, slice):
        self.removeDates(self.views[slice])


class MapViewListModel(QAbstractListModel):
    """
    A model to keep 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 MapViewCollectionDock(QgsDockWidget, loadUI('mapviewdock.ui')):

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

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

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

        self.mMapViews = MapViewListModel()
        self.baseTitle = self.windowTitle()

        self.btnAddMapView.setDefaultAction(self.actionAddMapView)
        self.btnRemoveMapView.setDefaultAction(self.actionRemoveMapView)
        self.btnRefresh.setDefaultAction(self.actionApplyStyles)
        self.btnHighlightMapView.setDefaultAction(self.actionHighlightMapView)


        self.actionAddMapView.triggered.connect(self.createMapView)
        self.actionRemoveMapView.triggered.connect(lambda : self.removeMapView(self.currentMapView()) if self.currentMapView() else None)
        self.actionHighlightMapView.triggered.connect(lambda : self.currentMapView().setHighlighted(True) if self.currentMapView() else None)
        self.actionApplyStyles.triggered.connect(self.refreshCurrentMapView)
        #self.actionApplyStyles.triggered.connect(self.dummySlot)

        self.mMapViews.sigMapViewsRemoved.connect(self.onMapViewsRemoved)
        self.mMapViews.sigMapViewsAdded.connect(self.onMapViewsAdded)
        self.mMapViews.sigMapViewsAdded.connect(self.updateButtons)
        self.mMapViews.sigMapViewsRemoved.connect(self.updateButtons)
        self.cbMapView.setModel(self.mMapViews)
        self.cbMapView.currentIndexChanged[int].connect(lambda i : None if i < 0 else self.setCurrentMapView(self.mMapViews.idx2MapView(i)) )

        self.TS = None


    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 onMapViewsAdded(self, mapViews):
        nextShown = None
        for mapView in mapViews:
            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)


    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 = MapView(self)

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


        mapView.sigShowProfiles.connect(self.sigShowProfiles)
        self.mMapViews.addMapView(mapView)
        self.sigMapViewAdded.emit(mapView)
        return mapView

    def updateFromMapView(self, mapView):
        assert isinstance(mapView, MapView)
        self.btnToggleMapViewVisibility.setChecked(mapView)

    def removeMapView(self, mapView):
        if isinstance(mapView, MapView):
            assert mapView in self.mMapViews

            i = self.mMapViews.mapView2idx(mapView)
            if not i == self.stackedWidget.indexOf(mapView.ui):
                s = ""

            self.mMapViews.removeMapView(mapView)

            mapView.ui.close()

            self.sigMapViewRemoved.emit(mapView)

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

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

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

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

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

    def setVectorLayer(self, lyr):
        for mapView in self.mMapViews:
            assert isinstance(mapView, MapView)
            mapView.setVectorLayer(lyr)

    def addSensor(self, sensor):
        for mapView in self.mMapViews:
            mapView.addSensor(sensor)


    def removeSensor(self, sensor):
        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.setShowCrosshair(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())


    def currentMapView(self):
        if len(self.mMapViews) == 0:
            return None
        else:
            i = self.cbMapView.currentIndex()
            if i >= 0:
                return self.mMapViews.idx2MapView(i)
            else:
                return None


"""
class MapViewDockUI(QgsDockWidget, loadUi('mapviewdock.ui')):
    def __init__(self, parent=None):
        super(MapViewDockUI, self).__init__(parent)
        self.setupUi(self)

        self.baseTitle = self.windowTitle()
        self.btnApplyStyles.setDefaultAction(self.actionApplyStyles)

        #self.dockLocationChanged.connect(self.adjustLayouts)



    def toggleLayout(self, p):
        newLayout = None
        l = p.layout()
        print('toggle layout {}'.format(str(p.objectName())))
        tmp = QWidget()
        tmp.setLayout(l)
        sMax = p.maximumSize()
        sMax.transpose()
        sMin = p.minimumSize()
        sMin.transpose()
        p.setMaximumSize(sMax)
        p.setMinimumSize(sMin)
        if isinstance(l, QVBoxLayout):
            newLayout = QHBoxLayout()
        else:
            newLayout = QVBoxLayout()
        print(l, '->', newLayout)

        while l.count() > 0:
            item = l.itemAt(0)
            l.removeItem(item)

            newLayout.addItem(item)


        p.setLayout(newLayout)
        return newLayout

    def adjustLayouts(self, area):
        return
        lOld = self.scrollAreaMapsViewDockContent.layout()
        if area in [Qt.LeftDockWidgetArea, Qt.RightDockWidgetArea] \
            and isinstance(lOld, QVBoxLayout) or \
        area in [Qt.TopDockWidgetArea, Qt.BottomDockWidgetArea] \
                        and isinstance(lOld, QHBoxLayout):

            #self.toogleLayout(self.scrollAreaMapsViewDockContent)
            self.toggleLayout(self.BVButtonList)
"""