mapvisualization.py

import os, sys, re, fnmatch, collections, copy, traceback, six, bisect
from future import *
import logging
logger = logging.getLogger(__name__)
from qgis.core import *
from PyQt4.QtXml import *
from PyQt4.QtCore import *
from PyQt4.QtGui import *
import numpy as np
from timeseriesviewer.utils import *
from timeseriesviewer.main import TimeSeriesViewer
from timeseriesviewer.timeseries import SensorInstrument, TimeSeriesDatum
from timeseriesviewer.ui.docks import TsvDockWidgetBase, loadUi
from timeseriesviewer.ui.widgets import TsvMimeDataUtils, maxWidgetSizes
from timeseriesviewer.mapcanvas import MapCanvas


class MapView(QObject):

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

    sigTitleChanged = pyqtSignal(str)
    sigSensorRendererChanged = pyqtSignal(SensorInstrument, QgsRasterRenderer)
    from timeseriesviewer.crosshair import CrosshairStyle
    sigCrosshairStyleChanged = pyqtSignal(CrosshairStyle)
    sigShowCrosshair = pyqtSignal(bool)
    sigVectorLayerChanged = pyqtSignal()

    sigShowProfiles = pyqtSignal(SpatialPoint)

    def __init__(self, mapViewCollection, recommended_bands=None, parent=None):
        super(MapView, self).__init__()
        assert isinstance(mapViewCollection, MapViewCollection)
        self.mapViewCollection = mapViewCollection
        self.sensorViews = collections.OrderedDict()
        self.spatTempVis = mapViewCollection.STV
        self.ui = MapViewDefinitionUI(self, parent=parent)
        self.ui.create()

        self.setVisibility(True)

        self.mVectorLayer = None
        self.setVectorLayer(None)

        #forward actions with reference to this band view
        self.ui.actionRemoveMapView.triggered.connect(lambda: self.sigRemoveMapView.emit(self))
        self.ui.actionApplyStyles.triggered.connect(self.applyStyles)
        self.ui.actionShowCrosshair.toggled.connect(self.setShowCrosshair)
        self.ui.sigShowMapView.connect(lambda: self.sigMapViewVisibility.emit(True))
        self.ui.sigHideMapView.connect(lambda: self.sigMapViewVisibility.emit(False))
        self.ui.sigVectorVisibility.connect(self.sigVectorVisibility.emit)



    def mapCanvases(self):
        m = []
        for sensor, sensorView in self.sensorViews.items():
            m.extend(sensorView.mapCanvases())
        return m

    def vectorLayerRenderer(self):
        if isinstance(self.mVectorLayer, QgsVectorLayer):
            return self.mVectorLayer.rendererV2()
        return None

    def setVectorLayerRenderer(self, renderer):
        if isinstance(renderer, QgsFeatureRendererV2) and \
            isinstance(self.mVectorLayer, QgsVectorLayer):
            self.mVectorLayer.setRendererV2(renderer)

    def setVectorLayer(self, lyr):
        if isinstance(lyr, QgsVectorLayer):
            #add vector layer
            self.mVectorLayer = lyr
            self.mVectorLayer.rendererChanged.connect(self.sigVectorLayerChanged)
            self.ui.btnVectorOverlayVisibility.setEnabled(True)

            for mapCanvas in self.mapCanvases():
                assert isinstance(mapCanvas, MapCanvas)
                mapCanvas.addLazyVectorSources([lyr])
                mapCanvas.refresh()

        else:
            #remove vector layers
            self.mVectorLayer = None
            self.ui.btnVectorOverlayVisibility.setEnabled(False)
            for mapCanvas in self.mapCanvases():
                mapCanvas.setLayers([l for l in mapCanvas.mLayers if not isinstance(l, QgsVectorLayer)])
                #mapCanvas.refresh()
        self.sigVectorLayerChanged.emit()



    def applyStyles(self):
        for sensorView in self.sensorViews.values():
            sensorView.applyStyle()
        s = ""


    def setVisibility(self, isVisible):
        self.ui.setVisibility(isVisible)

    def visibility(self):
        return self.ui.visibility()

    def visibleVectorOverlay(self):
        return isinstance(self.mVectorLayer, QgsVectorLayer) and \
               self.ui.btnVectorOverlayVisibility.isChecked()



    def setTitle(self, title):
        self.mTitle = title
        #self.ui.setTitle('Map View' + title)
        self.sigTitleChanged.emit(self.mTitle)

    def title(self):
        return self.mTitle

    def setCrosshairStyle(self, crosshairStyle):
        self.sigCrosshairStyleChanged.emit(crosshairStyle)
    def setShowCrosshair(self, b):
        self.sigShowCrosshair.emit(b)

    def removeSensor(self, sensor):
        assert type(sensor) is SensorInstrument
        if sensor in self.sensorViews.keys():
            w = self.sensorViews.pop(sensor)
            assert isinstance(w, MapViewSensorSettings)
            l = self.ui.sensorList.layout()
            l.removeWidget(w.ui)
            w.ui.close()
            self.ui.adjustSize()
            return True
        else:
            return False

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

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

        #set basic settings
        sensorView = self.sensorViews[sensor]
        assert isinstance(sensorView, MapViewSensorSettings)
        sensorView.registerMapCanvas(mapCanvas)

        #register signals sensor specific signals
        mapCanvas.setRenderer(sensorView.rasterLayerRenderer())

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




    def addSensor(self, sensor):
        """
        :param sensor:
        :return:
        """
        assert type(sensor) is SensorInstrument
        assert sensor not in self.sensorViews.keys()

        w = MapViewSensorSettings(sensor)

        #w.showSensorName(False)
        self.sensorViews[sensor] = w
        l = self.ui.sensorList.layout()
        i = l.count()
        lastWidgetIndex = 0
        for i in range(l.count()):
            if isinstance(l.itemAt(i), QWidget):
                lastWidgetIndex = i
        l.insertWidget(lastWidgetIndex, w.ui)
        self.ui.resize(self.ui.sizeHint())

    def getSensorWidget(self, sensor):
        assert type(sensor) is SensorInstrument
        return self.sensorViews[sensor]



class MapViewRenderSettingsUI(QGroupBox, loadUi('mapviewrendersettings.ui')):

    def __init__(self, parent=None):
        """Constructor."""
        super(MapViewRenderSettingsUI, self).__init__(parent)
        # Set up the user interface from Designer.
        # After setupUI you can access any designer object by doing