mapvisualization.py

# -*- coding: utf-8 -*-
# noinspection PyPep8Naming
"""
/***************************************************************************
                              EO Time Series Viewer
                              -------------------
        begin                : 2015-08-20
        git sha              : $Format:%H$
        copyright            : (C) 2017 by HU-Berlin
        email                : benjamin.jakimow@geo.hu-berlin.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
"""


import os, sys, re, fnmatch, collections, copy, traceback, bisect
from qgis.core import *
from qgis.core import QgsContrastEnhancement, QgsRasterShader, QgsColorRampShader,  QgsProject, QgsCoordinateReferenceSystem, \
    QgsRasterLayer, QgsVectorLayer, QgsMapLayer, QgsMapLayerProxyModel, QgsColorRamp, QgsSingleBandPseudoColorRenderer

from qgis.gui import *
from qgis.gui import QgsDockWidget, QgsMapCanvas, QgsMapTool, QgsCollapsibleGroupBox
from PyQt5.QtXml import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import numpy as np
from timeseriesviewer.utils import *

from timeseriesviewer.timeseries import SensorInstrument, TimeSeriesDatum, TimeSeries
from timeseriesviewer.utils import loadUI
from timeseriesviewer.ui.mapviewscrollarea import MapViewScrollArea
from timeseriesviewer.mapcanvas import MapCanvas
from timeseriesviewer.crosshair import CrosshairStyle



#assert os.path.isfile(dummyPath)
#lyr = QgsRasterLayer(dummyPath)
#assert lyr.isValid()
DUMMY_RASTERINTERFACE = QgsSingleBandGrayRenderer(None, 0)


class MapViewUI(QFrame, loadUI('mapviewdefinition.ui')):


    def __init__(self, parent=None):
        super(MapViewUI, self).__init__(parent)
        self.setupUi(self)
        self.mSensors = collections.OrderedDict()

        m = QMenu(self.btnToggleCrosshair)
        m.addAction(self.actionSetCrosshairStyle)
        #a = m.addAction('Set Crosshair Style')

        self.btnToggleCrosshair.setMenu(m)

        from timeseriesviewer.main import TimeSeriesViewer
        tsv = TimeSeriesViewer.instance()
        self.mVectorSourceModel = self.cbQgsVectorLayer.model().sourceModel()
        QgsProject.instance().layersAdded.connect(self.mVectorSourceModel.addLayers)
        QgsProject.instance().layersRemoved.connect(self.mVectorSourceModel.removeLayers)

        if isinstance(tsv, TimeSeriesViewer):
            self.mStore = tsv.mapLayerStore()

            self.mStore.layersAdded.connect(self.mVectorSourceModel.addLayers)
            self.mStore.layersRemoved.connect(self.mVectorSourceModel.removeLayers)


        #connect the QActions with the QgsCollapsibleGroupBoxes
        self.gbVectorRendering.toggled.connect(self.actionToggleVectorVisibility.setChecked)
        self.gbRasterRendering.toggled.connect(self.actionToggleRasterVisibility.setChecked)


        self.btnToggleCrosshair.setDefaultAction(self.actionToggleCrosshairVisibility)
        self.btnToggleMapViewVisibility.setDefaultAction(self.actionToggleMapViewHidden)
        self.btnSetVectorStyle.setDefaultAction(self.actionSetVectorStyle)



    def addSensor(self, sensor:SensorInstrument):
        """
        Registers a new SensorInstrument to this map view. Initializes widgets to handle sensor specific visualization properties.
        :param sensor: SensorInstrument
        """
        assert isinstance(sensor, SensorInstrument)


        w = MapViewRenderSettings(sensor, parent=self)
        w.collapsedStateChanged.connect(self.onSensorBoxCollapsed)
        l = self.gbRasterRendering.layout()
        assert sensor not in self.mSensors.keys()

        i = l.count()-1
        while i > 0 and not isinstance(l.itemAt(i), QWidget):
            i -= 1
        l.insertWidget(i, w, stretch=0, alignment=Qt.AlignTop)
        self.mSensors[sensor] = w

        return w


    def removeSensor(self, sensor):

        assert isinstance(sensor, SensorInstrument)
        sensorSettings = self.mSensors.pop(sensor)
        assert isinstance(sensorSettings, MapViewRenderSettings)

        #l = self.renderSettingsLayout
        l = self.gbRasterRendering.layout()
        l.removeWidget(sensorSettings)
        sensorSettings.close()
        #self.resize(self.sizeHint())

    def onSensorBoxCollapsed(self, b:bool):
        l = self.gbRasterRendering.layout()
        for i in range(l.count()):
            item = l.itemAt(i)

            s = ""

class RendererWidgetModifications(object):

    def __init__(self, *args):

        self.initWidgetNames()
        self.mBandComboBoxes = []
        s = ""

    def modifyGridLayout(self):

        gridLayoutOld = self.layout().children()[0]
        self.gridLayout = QGridLayout()
        while gridLayoutOld.count() > 0:
            w = gridLayoutOld.takeAt(0)
            w = w.widget()
            gridLayoutOld.removeWidget(w)
            w.setVisible(False)

        self.gridLayout.setSpacing(2)

        l = self.layout()
        l.removeItem(gridLayoutOld)
        if isinstance(l, QBoxLayout):
            l.insertItem(0, self.gridLayout)
            self.layout().addStretch()
        elif isinstance(l, QGridLayout):
            l.addItem(self.gridLayout, 0, 0)


        minMaxWidget = self.minMaxWidget()
        if isinstance(minMaxWidget, QWidget):
            minMaxWidget.layout().itemAt(0).widget().collapsedStateChanged.connect(self.onCollapsed)


    def initWidgetNames(self, parent=None):
        """
        Create a python variables to access QObjects which are child of parent
        :param parent: QObject, self by default
        """
        if parent is None:
            parent = self

        for c in parent.children():
            setattr(parent, c.objectName(), c)





    def onCollapsed(self, b):
        hint = self.sizeHint()
        self.parent().adjustSize()
       # self.parent().setFixedSize(hint)
        self.parent().parent().adjustSize()

    def connectSliderWithBandComboBox(self, slider, combobox):
        """
        Connects a band-selection slider with a band-selection combobox
        :param widget: QgsRasterRendererWidget
        :param slider: QSlider to show the band number
        :param combobox: QComboBox to show the band name
        :return:
        """
        assert isinstance(self, QgsRasterRendererWidget)
        assert isinstance(slider, QSlider)
        assert isinstance(combobox, QComboBox)

        # init the slider
        lyr = self.rasterLayer()
        if lyr.isValid():
            nb = lyr.dataProvider().bandCount()
        else:
            ds = gdal.Open(lyr.source())
            if isinstance(ds, gdal.Dataset):
                nb = ds.RasterCount
            else:
                nb = 1
        slider.setTickPosition(QSlider.TicksAbove)
        slider.valueChanged.connect(combobox.setCurrentIndex)
        slider.setMinimum(1)
        slider.setMaximum(nb)
        intervals = [1, 2, 5, 10, 25, 50]
        for interval in intervals:
            if nb / interval < 10:
                break
        slider.setTickInterval(interval)
        slider.setPageStep(interval)

        def onBandValueChanged(self, idx, slider):
            assert isinstance(self, QgsRasterRendererWidget)
            assert isinstance(idx, int)
            assert isinstance(slider, QSlider)

            # i = slider.value()
            slider.blockSignals(True)
            slider.setValue(idx)
            slider.blockSignals(False)

            # self.minMaxWidget().setBands(myBands)
            # self.widgetChanged.emit()

        if self.comboBoxWithNotSetItem(combobox):
            combobox.currentIndexChanged[int].connect(lambda idx: onBandValueChanged(self, idx, slider))
        else:
            combobox.currentIndexChanged[int].connect(lambda idx: onBandValueChanged(self, idx + 1, slider))

        s = ""

    def comboBoxWithNotSetItem(self, cb)->bool:
        assert isinstance(cb, QComboBox)
        data = cb.itemData(0, role=Qt.DisplayRole)
        return re.search(r'^(not set|none|nonetype)$', str(data).strip(), re.I) is not None

    def setLayoutItemVisibility(self, grid, isVisible):
        assert isinstance(self, QgsRasterRendererWidget)
        for i in range(grid.count()):
            item = grid.itemAt(i)
            if isinstance(item, QLayout):
                s = ""
            elif isinstance(item, QWidgetItem):
                item.widget().setVisible(isVisible)
                item.widget().setParent(self)
            else:
                s = ""

    def setBandSelection(self, key):
        key = key.upper()
        if key == 'DEFAULT':
            bandIndices = defaultBands(self.rasterLayer())
        else:
            colors = re.split('[ ,;:]', key)

            bandIndices = [bandClosestToWavelength(self.rasterLayer(), c) for c in colors]

        n = min(len(bandIndices), len(self.mBandComboBoxes))
        for i in range(n):
            cb = self.mBandComboBoxes[i]
            bandIndex = bandIndices[i]
            if self.comboBoxWithNotSetItem(cb):
                cb.setCurrentIndex(bandIndex+1)
            else:
                cb.setCurrentIndex(bandIndex)


    def fixBandNames(self, comboBox):
        """
        Changes the QGIS default bandnames ("Band 001") to more meaningfull information including gdal.Dataset.Descriptions.
        :param widget:
        :param comboBox:
        """
        nb = self.rasterLayer().bandCount()

        assert isinstance(self, QgsRasterRendererWidget)
        assert isinstance(comboBox, QComboBox)
        #comboBox.clear()
        m = comboBox.model()
        assert isinstance(m, QStandardItemModel)
        bandNames = displayBandNames(self.rasterLayer())


        b = 1 if nb < comboBox.count() else 0
        for i in range(nb):
            item = m.item(i+b,0)
            assert isinstance(item, QStandardItem)
            item.setData(bandNames[i], Qt.DisplayRole)
            item.setData('Band {} "{}"'.format(i+1, bandNames[i]), Qt.ToolTipRole)








def displayBandNames(provider_or_dataset, bands=None):
    results = None
    if isinstance(provider_or_dataset, QgsRasterLayer):
        return displayBandNames(provider_or_dataset.dataProvider())
    elif isinstance(provider_or_dataset, QgsRasterDataProvider):
        if provider_or_dataset.name() == 'gdal':
            ds = gdal.Open(provider_or_dataset.dataSourceUri())
            results = displayBandNames(ds, bands=bands)
        else:
            # same as in QgsRasterRendererWidget::displayBandName
            results = []
            if bands is None:
                bands = range(1, provider_or_dataset.bandCount() + 1)
            for band in bands:
                result = provider_or_dataset.generateBandName(band)
                colorInterp ='{}'.format(provider_or_dataset.colorInterpretationName(band))
                if colorInterp != 'Undefined':
                    result += '({})'.format(colorInterp)
                results.append(result)

    elif isinstance(provider_or_dataset, gdal.Dataset):
        results = []
        if bands is None:
            bands = range(1, provider_or_dataset.RasterCount+1)
        for band in bands:
            b = provider_or_dataset.GetRasterBand(band)
            descr = b.GetDescription()
            if len(descr) == 0:
                descr = 'Band {}'.format(band)
            results.append(descr)

    return results


class SingleBandPseudoColorRendererWidget(QgsSingleBandPseudoColorRendererWidget, RendererWidgetModifications):
    @staticmethod
    def create(layer, extent):
        return SingleBandPseudoColorRendererWidget(layer, extent)

    def __init__(self, layer, extent):
        super(SingleBandPseudoColorRendererWidget, self).__init__(layer, extent)

        self.gridLayout = self.layout().children()[0]
        assert isinstance(self.gridLayout, QGridLayout)
        for i in range(self.gridLayout.count()):
            w = self.gridLayout.itemAt(i)
            w = w.widget()
            if isinstance(w, QWidget):
                setattr(self, w.objectName(), w)

        toReplace = [self.mBandComboBox, self.mMinLabel, self.mMaxLabel, self.mMinLineEdit, self.mMaxLineEdit]
        for w in toReplace:
            self.gridLayout.removeWidget(w)
            w.setVisible(False)
        self.mBandSlider = QSlider(Qt.Horizontal, self)
        self.mBandComboBoxes.append(self.mBandComboBox)
        self.fixBandNames(self.mBandComboBox)
        self.connectSliderWithBandComboBox(self.mBandSlider, self.mBandComboBox)

        self.mBtnBar = QFrame(self)
        self.initActionButtons()
        grid = QGridLayout(self)
        grid.addWidget(self.mBtnBar, 0, 0, 1, 4, Qt.AlignLeft)
        grid.addWidget(self.mBandSlider, 1, 0, 1, 2)
        grid.addWidget(self.mBandComboBox, 1, 2, 1, 2)
        grid.addWidget(self.mMinLabel, 2, 0)
        grid.addWidget(self.mMinLineEdit, 2, 1)
        grid.addWidget(self.mMaxLabel, 2, 2)
        grid.addWidget(self.mMaxLineEdit, 2, 3)

        grid.setColumnStretch(0, 0)
        grid.setColumnStretch(1, 2)
        grid.setColumnStretch(2, 0)
        grid.setColumnStretch(3, 2)
        grid.setSpacing(2)
        self.gridLayout.addItem(grid, 0, 1, 2, 4)
        self.gridLayout.setSpacing(2)
        self.setLayoutItemVisibility(grid, True)


    def initActionButtons(self):

            wl, wlu = parseWavelength(self.rasterLayer())
            self.wavelengths = wl
            self.wavelengthUnit = wlu

            self.mBtnBar.setLayout(QHBoxLayout(self.mBtnBar))
            self.mBtnBar.layout().addStretch()
            self.mBtnBar.layout().setContentsMargins(0, 0, 0, 0)
            self.mBtnBar.layout().setSpacing(2)

            self.actionSetDefault = QAction('Default', self)
            self.actionSetRed = QAction('R', self)
            self.actionSetGreen = QAction('G', self)
            self.actionSetBlue = QAction('B', self)
            self.actionSetNIR = QAction('nIR', self)
            self.actionSetSWIR = QAction('swIR', self)

            self.actionSetDefault.triggered.connect(lambda: self.setBandSelection('default'))
            self.actionSetRed.triggered.connect(lambda: self.setBandSelection('R'))
            self.actionSetGreen.triggered.connect(lambda: self.setBandSelection('G'))
            self.actionSetBlue.triggered.connect(lambda: self.setBandSelection('B'))
            self.actionSetNIR.triggered.connect(lambda: self.setBandSelection('nIR'))
            self.actionSetSWIR.triggered.connect(lambda: self.setBandSelection('swIR'))


            def addBtnAction(action):
                btn = QToolButton(self.mBtnBar)
                btn.setDefaultAction(action)
                self.mBtnBar.layout().addWidget(btn)
                self.insertAction(None, action)
                return btn

            self.btnDefault = addBtnAction(self.actionSetDefault)
            self.btnRed = addBtnAction(self.actionSetRed)
            self.btnGreen = addBtnAction(self.actionSetGreen)
            self.btnBlue = addBtnAction(self.actionSetRed)
            self.btnNIR = addBtnAction(self.actionSetNIR)
            self.btnSWIR = addBtnAction(self.actionSetSWIR)

            b = self.wavelengths is not None
            for a in [self.actionSetRed, self.actionSetGreen, self.actionSetBlue, self.actionSetNIR, self.actionSetSWIR]:
                a.setEnabled(b)


def displayBandNames(provider_or_dataset, bands=None):
    results = None
    if isinstance(provider_or_dataset, QgsRasterLayer):
        return displayBandNames(provider_or_dataset.dataProvider())
    elif isinstance(provider_or_dataset, QgsRasterDataProvider):
        if provider_or_dataset.name() == 'gdal':
            ds = gdal.Open(provider_or_dataset.dataSourceUri())
            results = displayBandNames(ds, bands=bands)
        else:
            # same as in QgsRasterRendererWidget::displayBandName
            results = []
            if bands is None:
                bands = range(1, provider_or_dataset.bandCount() + 1)
            for band in bands:
                result = provider_or_dataset.generateBandName(band)
                colorInterp ='{}'.format(provider_or_dataset.colorInterpretationName(band))
                if colorInterp != 'Undefined':
                    result += '({})'.format(colorInterp)
                results.append(result)

    elif isinstance(provider_or_dataset, gdal.Dataset):
        results = []
        if bands is None:
            bands = range(1, provider_or_dataset.RasterCount+1)
        for band in bands:
            b = provider_or_dataset.GetRasterBand(band)
            descr = b.GetDescription()
            if len(descr) == 0:
                descr = 'Band {}'.format(band)
            results.append(descr)

    return results


class SingleBandGrayRendererWidget(QgsSingleBandGrayRendererWidget, RendererWidgetModifications):
    @staticmethod
    def create(layer, extent):
        return SingleBandGrayRendererWidget(layer, extent)

    def __init__(self, layer, extent):
        super(SingleBandGrayRendererWidget, self).__init__(layer, extent)

        self.modifyGridLayout()
        self.mGrayBandSlider = QSlider(Qt.Horizontal, self)
        self.mBandComboBoxes.append(self.mGrayBandComboBox)
        self.fixBandNames(self.mGrayBandComboBox)
        self.connectSliderWithBandComboBox(self.mGrayBandSlider, self.mGrayBandComboBox)

        self.mBtnBar = QFrame(self)
        self.initActionButtons()

        self.gridLayout.addWidget(self.mGrayBandLabel, 0, 0)
        self.gridLayout.addWidget(self.mBtnBar, 0, 1, 1, 4, Qt.AlignLeft)

        self.gridLayout.addWidget(self.mGrayBandSlider, 1, 1, 1, 2)
        self.gridLayout.addWidget(self.mGrayBandComboBox, 1, 3, 1, 2)

        self.gridLayout.addWidget(self.label, 2, 0)
        self.gridLayout.addWidget(self.mGradientComboBox, 2, 1, 1, 4)

        self.gridLayout.addWidget(self.mMinLabel, 3, 1)
        self.gridLayout.addWidget(self.mMinLineEdit, 3, 2)
        self.gridLayout.addWidget(self.mMaxLabel, 3, 3)
        self.gridLayout.addWidget(self.mMaxLineEdit, 3, 4)

        self.gridLayout.addWidget(self.mContrastEnhancementLabel, 4, 0)
        self.gridLayout.addWidget(self.mContrastEnhancementComboBox, 4, 1, 1, 4)
        self.gridLayout.setSpacing(2)

        self.setLayoutItemVisibility(self.gridLayout, True)

        self.mDefaultRenderer = layer.renderer()
        self.setFromRenderer(self.mDefaultRenderer)

    def initActionButtons(self):

        wl, wlu = parseWavelength(self.rasterLayer())
        self.wavelengths = wl
        self.wavelengthUnit = wlu

        self.mBtnBar.setLayout(QHBoxLayout(self))
        self.mBtnBar.layout().addStretch()
        self.mBtnBar.layout().setContentsMargins(0, 0, 0, 0)
        self.mBtnBar.layout().setSpacing(2)

        self.actionSetDefault = QAction('Default', self)
        self.actionSetRed = QAction('R', self)
        self.actionSetGreen = QAction('G', self)
        self.actionSetBlue = QAction('B', self)
        self.actionSetNIR = QAction('nIR', self)
        self.actionSetSWIR = QAction('swIR', self)

        self.actionSetDefault.triggered.connect(lambda: self.setBandSelection('default'))
        self.actionSetRed.triggered.connect(lambda: self.setBandSelection('R'))
        self.actionSetGreen.triggered.connect(lambda: self.setBandSelection('G'))
        self.actionSetBlue.triggered.connect(lambda: self.setBandSelection('B'))
        self.actionSetNIR.triggered.connect(lambda: self.setBandSelection('nIR'))
        self.actionSetSWIR.triggered.connect(lambda: self.setBandSelection('swIR'))


        def addBtnAction(action):
            btn = QToolButton(self.mBtnBar)
            btn.setDefaultAction(action)
            self.mBtnBar.layout().addWidget(btn)
            self.insertAction(None, action)
            return btn

        self.btnDefault = addBtnAction(self.actionSetDefault)
        self.btnBlue = addBtnAction(self.actionSetBlue)
        self.btnGreen = addBtnAction(self.actionSetGreen)
        self.btnRed = addBtnAction(self.actionSetRed)
        self.btnNIR = addBtnAction(self.actionSetNIR)
        self.btnSWIR = addBtnAction(self.actionSetSWIR)

        b = self.wavelengths is not None
        for a in [self.actionSetRed, self.actionSetGreen, self.actionSetBlue, self.actionSetNIR, self.actionSetSWIR]:
            a.setEnabled(b)


class PalettedRendererWidget(QgsPalettedRendererWidget, RendererWidgetModifications):
    @staticmethod
    def create(layer, extent):
        return PalettedRendererWidget(layer, extent)

    def __init__(self, layer, extent):
        super(PalettedRendererWidget, self).__init__(layer, extent)

        #self.modifyGridLayout()

        self.fixBandNames(self.mBandComboBox)
        self.mTreeView.setMinimumSize(QSize(10,10))
        s = ""


class MultiBandColorRendererWidget(QgsMultiBandColorRendererWidget, RendererWidgetModifications):
    @staticmethod
    def create(layer, extent):
        return MultiBandColorRendererWidget(layer, extent)

    def __init__(self, layer, extent):
        super(MultiBandColorRendererWidget, self).__init__(layer, extent)

        self.modifyGridLayout()

        self.mRedBandSlider = QSlider(Qt.Horizontal, self)
        self.mGreenBandSlider = QSlider(Qt.Horizontal, self)
        self.mBlueBandSlider = QSlider(Qt.Horizontal, self)

        self.mBandComboBoxes.extend([self.mRedBandComboBox, self.mGreenBandComboBox, self.mBlueBandComboBox])
        self.mSliders = [self.mRedBandSlider, self.mGreenBandSlider, self.mBlueBandSlider]
        for cbox, slider in zip(self.mBandComboBoxes, self.mSliders):
            self.connectSliderWithBandComboBox(slider, cbox)

        self.fixBandNames(self.mRedBandComboBox)
        self.fixBandNames(self.mGreenBandComboBox)
        self.fixBandNames(self.mBlueBandComboBox)

        self.mBtnBar = QFrame(self)
        self.mBtnBar.setLayout(QHBoxLayout(self.mBtnBar))
        self.initActionButtons()
        self.mBtnBar.layout().addStretch()
        self.mBtnBar.layout().setContentsMargins(0, 0, 0, 0)
        self.mBtnBar.layout().setSpacing(2)

        #self.gridLayout.deleteLater()
#        self.gridLayout = newGrid
        self.gridLayout.addWidget(self.mBtnBar, 0, 1, 1, 3)
        self.gridLayout.addWidget(self.mRedBandLabel, 1, 0)
        self.gridLayout.addWidget(self.mRedBandSlider, 1, 1)
        self.gridLayout.addWidget(self.mRedBandComboBox, 1, 2)
        self.gridLayout.addWidget(self.mRedMinLineEdit, 1, 3)
        self.gridLayout.addWidget(self.mRedMaxLineEdit, 1, 4)

        self.gridLayout.addWidget(self.mGreenBandLabel, 2, 0)
        self.gridLayout.addWidget(self.mGreenBandSlider, 2, 1)
        self.gridLayout.addWidget(self.mGreenBandComboBox, 2, 2)
        self.gridLayout.addWidget(self.mGreenMinLineEdit, 2, 3)
        self.gridLayout.addWidget(self.mGreenMaxLineEdit, 2, 4)

        self.gridLayout.addWidget(self.mBlueBandLabel, 3, 0)
        self.gridLayout.addWidget(self.mBlueBandSlider, 3, 1)
        self.gridLayout.addWidget(self.mBlueBandComboBox, 3, 2)
        self.gridLayout.addWidget(self.mBlueMinLineEdit, 3, 3)
        self.gridLayout.addWidget(self.mBlueMaxLineEdit, 3, 4)

        self.gridLayout.addWidget(self.mContrastEnhancementAlgorithmLabel, 4, 0, 1, 2)
        self.gridLayout.addWidget(self.mContrastEnhancementAlgorithmComboBox, 4, 2, 1, 3)

        self.setLayoutItemVisibility(self.gridLayout, True)


        self.mRedBandLabel.setText('R')
        self.mGreenBandLabel.setText('G')
        self.mBlueBandLabel.setText('B')

        self.mDefaultRenderer = layer.renderer()



    def initActionButtons(self):

        wl, wlu = parseWavelength(self.rasterLayer())
        self.wavelengths = wl
        self.wavelengthUnit = wlu

        self.actionSetDefault = QAction('Default', self)
        self.actionSetTrueColor = QAction('RGB', self)
        self.actionSetCIR = QAction('nIR', self)
        self.actionSet453 = QAction('swIR', self)

        self.actionSetDefault.triggered.connect(lambda: self.setBandSelection('default'))
        self.actionSetTrueColor.triggered.connect(lambda: self.setBandSelection('R,G,B'))
        self.actionSetCIR.triggered.connect(lambda: self.setBandSelection('nIR,R,G'))
        self.actionSet453.triggered.connect(lambda: self.setBandSelection('nIR,swIR,R'))


        def addBtnAction(action):
            btn = QToolButton(self.mBtnBar)
            btn.setDefaultAction(action)
            self.mBtnBar.layout().addWidget(btn)
            self.insertAction(None, action)
            return btn

        self.btnDefault = addBtnAction(self.actionSetDefault)
        self.btnTrueColor = addBtnAction(self.actionSetTrueColor)
        self.btnCIR = addBtnAction(self.actionSetCIR)
        self.btn453 = addBtnAction(self.actionSet453)

        b = self.wavelengths is not None
        for a in [self.actionSetCIR, self.actionSet453, self.actionSetTrueColor]:
            a.setEnabled(b)


class MapView(QObject):

    sigRemoveMapView = pyqtSignal(object)
    sigMapViewVisibility = pyqtSignal(bool)
    #sigVectorVisibility = pyqtSignal(bool)
    #sigRasterVisibility = pyqtSignal(bool)

    sigTitleChanged = pyqtSignal(str)
    sigSensorRendererChanged = pyqtSignal(SensorInstrument, QgsRasterRenderer)


    sigVectorLayerChanged = pyqtSignal()

    sigShowProfiles = pyqtSignal(SpatialPoint, MapCanvas, str)

    def __init__(self, mapViewCollectionDock, name='Map View', recommended_bands=None, parent=None):
        super(MapView, self).__init__()
        assert isinstance(mapViewCollectionDock, MapViewCollectionDock)

        self.ui = MapViewUI(mapViewCollectionDock.stackedWidget)

        self.ui.cbQgsVectorLayer.setFilters(QgsMapLayerProxyModel.VectorLayer)
        self.ui.cbQgsVectorLayer.layerChanged.connect(self.setVectorLayer)


        self.ui.tbName.textChanged.connect(self.sigTitleChanged.emit)
        from timeseriesviewer.crosshair import getCrosshairStyle
        self.ui.actionSetCrosshairStyle.triggered.connect(
            lambda : self.onCrosshairChanged(getCrosshairStyle(
                parent=self.ui,
                crosshairStyle=self.crosshairStyle()))
        )

        self.mapViewCollection = mapViewCollectionDock
        self.mSensorViews = collections.OrderedDict()

        self.mVectorLayer = None
        self.setVectorLayer(None)

        self.mIsVisible = True

        self.ui.actionToggleVectorVisibility.toggled.connect(self.setVectorVisibility)
        self.ui.actionToggleRasterVisibility.toggled.connect(self.setRasterVisibility)
        self.ui.actionToggleCrosshairVisibility.toggled.connect(self.onCrosshairChanged)
        self.ui.actionToggleMapViewHidden.toggled.connect(lambda b: self.setIsVisible(not b))

        self.ui.actionToggleVectorVisibility.setChecked(False)
        self.ui.actionToggleRasterVisibility.setChecked(True)

        self.ui.actionSetVectorStyle.triggered.connect(self.setVectorLayerStyle)

        for sensor in self.mapViewCollection.TS.sensors():
            self.addSensor(sensor)

        self.setTitle(name)

    def setIsVisible(self, b: bool):
        """
        Sets the map view visibility
        :param b: bool
        """
        assert isinstance(b, bool)

        changed = False

        for mapCanvas in self.mapCanvases():
            assert isinstance(mapCanvas, MapCanvas)
            if not mapCanvas.isVisible() == b:
                changed = True
                mapCanvas.setVisible(b)

        if self.ui.actionToggleMapViewHidden.isChecked() == b:
            self.ui.actionToggleMapViewHidden.setChecked(not b)

        if changed:
            self.sigMapViewVisibility.emit(b)


    def isVisible(self)->bool:
        """
        Returns the map view visibility
        :return: bool
        """
        return not self.ui.actionToggleMapViewHidden.isChecked()

    def mapCanvases(self)->list:
        """
        Returns the MapCanvases related to this map view
        :return: [list-of-MapCanvases]
        """
        m = []
        for sensor, sensorView in self.mSensorViews.items():
            m.extend(sensorView.mapCanvases())
        return m

    def setVectorLayerStyle(self, *args):
        if isinstance(self.mVectorLayer, QgsVectorLayer):
            d = QgsRendererPropertiesDialog(self.mVectorLayer, QgsStyle.defaultStyle())

            mc = self.mapCanvases()
            if len(mc) > 0:
                d.setMapCanvas(mc[0])
            d.exec_()
            s = ""

    def vectorLayerRenderer(self)->QgsFeatureRenderer:
        if isinstance(self.mVectorLayer, QgsVectorLayer):
            return self.mVectorLayer.renderer()
        return None


    def setVectorLayerRenderer(self, renderer):
        if isinstance(renderer, QgsFeatureRenderer) and \
            isinstance(self.mVectorLayer, QgsVectorLayer):
            self.mVectorLayer.setRendererV2(renderer)

    def setVectorLayer(self, lyr:QgsVectorLayer):
        """
        Sets a QgsVectorLayer that is shown on top of all other QgsRasterLayers
        :param lyr:
        :return:
        """
        b = False
        #remove last layer
        if isinstance(self.mVectorLayer, QgsVectorLayer):
            for mapCanvas in self.mapCanvases():
                if self.mVectorLayer in mapCanvas.mLayerSources.remove(self.mVectorLayer):
                    mapCanvas.mLayerSources.remove(self.mVectorLayer)
                    b = True
        # add new layer
        if isinstance(lyr, QgsVectorLayer) and self.ui.gbVectorRendering.isChecked():
            b = True
            #add vector layer
            self.mVectorLayer = lyr
            self.mVectorLayer.rendererChanged.connect(self.sigVectorLayerChanged)

            for mapCanvas in self.mapCanvases():
                assert isinstance(mapCanvas, MapCanvas)
                mapCanvas.mapLayerModel().addMapLayerSources([self.mVectorLayer])
        if b:
            self.sigVectorLayerChanged.emit()

    def applyStyles(self):
        """Applies all style changes to all sensor views."""
        for sensorView in self.mSensorViews.values():
            sensorView.applyStyle()

    def setTitle(self, title:str):
        """
        Sets the widget title
        :param title: str
        """
        old = self.title()
        if old != title:
            self.ui.tbName.setText(title)


    def title(self)->str:
        """Returns the title."""
        return self.ui.tbName.text()

    def refreshMapView(self, sensor=None):

        if isinstance(sensor, SensorInstrument):
            sensorSettings = [self.mSensorViews[sensor]]
        else:
            #update all sensors
            sensorSettings = self.mSensorViews.values()

        for renderSetting in sensorSettings:
            assert isinstance(renderSetting, MapViewRenderSettings)
            renderSetting.applyStyle()

        for mapCanvas in self.mapCanvases():
            if isinstance(mapCanvas, MapCanvas):
                mapCanvas.refresh()

    def setCrosshairStyle(self, crosshairStyle:CrosshairStyle):
        """
        Seths the CrosshairStyle of this MapView
        :param crosshairStyle: CrosshairStyle
        """
        self.onCrosshairChanged(crosshairStyle)

    def setHighlighted(self, b=True, timeout=1000):
        """
        Activates or deactivates a red-line border of the MapCanvases
        :param b: True | False to activate / deactivate the highlighted lines-
        :param timeout: int, milliseconds how long the highlighted frame should appear
        """
        styleOn = """.MapCanvas {
                    border: 4px solid red;
                    border-radius: 4px;
                }"""
        styleOff = """"""
        if b is True:
            for mapCanvas in self.mapCanvases():
                mapCanvas.setStyleSheet(styleOn)
            if timeout > 0:
                QTimer.singleShot(timeout, lambda : self.setHighlighted(False))
        else:
            for mapCanvas in self.mapCanvases():
                mapCanvas.setStyleSheet(styleOff)



    def rasterVisibility(self)->bool:
        """
        Returns whether raster images should be visible.
        :return: bool
        """
        return self.ui.actionToggleRasterVisibility.isChecked()

    def vectorVisibility(self)->bool:
        """
        Returns whether vector images should be visible.
        :return: bool
        """
        return self.ui.actionToggleVectorVisibility.isChecked()

    def setRasterVisibility(self, b:bool):
        """
        Sets visibility of rasters.
        :param b: bool
        """
        assert isinstance(b, bool)


        self.ui.actionToggleRasterVisibility.setChecked(b)

        for mapCanvas in self.mapCanvases():
            assert isinstance(mapCanvas, MapCanvas)
            mapCanvas.setLayerVisibility(QgsRasterLayer, b)

    def setVectorVisibility(self, b:bool):
        """
        Sets the visibility of vector layers.
        :param b:
        :return:
        """
        assert isinstance(b, bool)
        self.mVectorsVisible = b
        self.ui.actionToggleVectorVisibility.setChecked(b)

        for mapCanvas in self.mapCanvases():
            assert isinstance(mapCanvas, MapCanvas)
            mapCanvas.setLayerVisibility(QgsVectorLayer, b)


    def removeSensor(self, sensor:SensorInstrument):
        assert sensor in self.mSensorViews.keys()
        self.mSensorViews.pop(sensor)
        self.ui.removeSensor(sensor)
        return True

    def hasSensor(self, sensor):
        assert type(sensor) is SensorInstrument
        return sensor in self.mSensorViews.keys()

    def registerMapCanvas(self, sensor:SensorInstrument, mapCanvas:MapCanvas):
        """
        Registers a new MapCanvas to this MapView
        :param sensor:
        :param mapCanvas:
        :return:
        """
        from timeseriesviewer.mapcanvas import MapCanvas
        assert isinstance(mapCanvas, MapCanvas)
        assert isinstance(sensor, SensorInstrument)

        mapViewRenderSettings = self.mSensorViews[sensor]
        assert isinstance(mapViewRenderSettings, MapViewRenderSettings)
        mapViewRenderSettings.registerMapCanvas(mapCanvas)
        mapCanvas.setMapView(self)

        #register signals sensor specific signals
        mapCanvas.sigCrosshairVisibilityChanged.connect(self.onCrosshairChanged)
        mapCanvas.sigCrosshairStyleChanged.connect(self.onCrosshairChanged)

        #register non-sensor specific signals for this mpa view
        self.sigMapViewVisibility.connect(mapCanvas.refresh)
        self.sigVectorLayerChanged.connect(mapCanvas.refresh)
#        self.sigVectorVisibility.connect(mapCanvas.refresh)

    def crosshairStyle(self)->CrosshairStyle:
        """
        Returns the CrosshairStyle
        :return:
        """
        for c in self.mapCanvases():
            assert isinstance(c, MapCanvas)
            style = c.crosshairStyle()
            if isinstance(style, CrosshairStyle):
                return style
        return None

    def onCrosshairChanged(self, obj):
        """
        Synchronizes all crosshair positions. Takes care of CRS differences.
        :param spatialPoint: SpatialPoint of the new Crosshair position
        """
        from timeseriesviewer.crosshair 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(obj, bool):
            for mapCanvas in dstCanvases:
                mapCanvas.setCrosshairVisibility(obj, emitSignal=False)

        if isinstance(obj, CrosshairStyle):
            for mapCanvas in dstCanvases:
                mapCanvas.setCrosshairStyle(obj, emitSignal=False)


    def addSensor(self, sensor):
        """
        :param sensor:
        :return:
        """
        if isinstance(sensor, SensorInstrument) and sensor not in self.mSensorViews.keys():

            #w.showSensorName(False)
            w = self.ui.addSensor(sensor)
            w.sigRendererChanged.connect(lambda s=sensor : self.refreshMapView(sensor=s))
            #w.sigSensorRendererChanged.connect(self.onSensorRenderingChanged)
            self.mSensorViews[sensor] = w
            s  =""

    """
    def onSensorRenderingChanged(self, renderer):
        sensorSettings = self.sender()
        assert isinstance(sensorSettings, MapViewSensorSettings)
        for mapCanvas in sensorSettings.mapCanvases():
            mapCanvas.setRenderer(renderer)
            #mapCanvas.refresh()