mapvisualization.py

# -*- coding: utf-8 -*-
"""
/***************************************************************************
                              HUB TimeSeriesViewer
                              -------------------
        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.                                   *
 *                                                                         *
 ***************************************************************************/
"""
# noinspection PyPep8Naming
from __future__ import absolute_import, unicode_literals
import os, sys, re, fnmatch, collections, copy, traceback, six, bisect
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.timeseries import SensorInstrument, TimeSeriesDatum, TimeSeries
from timeseriesviewer.ui.docks import TsvDockWidgetBase, loadUi
from timeseriesviewer.ui.widgets import TsvMimeDataUtils, maxWidgetSizes
from timeseriesviewer.ui.mapviewscrollarea import MapViewScrollArea
from timeseriesviewer.mapcanvas import MapCanvas
from timeseriesviewer.crosshair import CrosshairStyle


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)

        self.gbVectorRendering.toggled.connect(self.actionToggleMapViewVisibility.toggle)
        #self.btnToggleMapViewVisibility.setDefaultAction(self.actionToggleMapViewVisibility)
        #self.btnToggleVectorOverlay.setDefaultAction(self.actionToggleVectorVisibility)
        self.btnToggleCrosshair.setDefaultAction(self.actionToggleCrosshairVisibility)

    def addSensor(self, sensor):
        assert isinstance(sensor, SensorInstrument)

        w = MapViewSensorSettings(sensor)
        #sizePolicy = QSizePolicy(QSize)
        #w.ui.
        l = self.renderSettingsLayout
        assert sensor not in self.mSensors.keys()

        lastWidgetIndex = l.count()-1
        l.insertWidget(lastWidgetIndex, w.ui)
        self.mSensors[sensor] = w
        #self.resize(self.sizeHint())

        return w


    def removeSensor(self, sensor):

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

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


class MapView(QObject):

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

    sigTitleChanged = pyqtSignal([str],[unicode])
    sigSensorRendererChanged = pyqtSignal(SensorInstrument, QgsRasterRenderer)

    sigCrosshairStyleChanged = pyqtSignal(CrosshairStyle)
    sigShowCrosshair = pyqtSignal(bool)
    sigVectorLayerChanged = pyqtSignal()

    sigShowProfiles = pyqtSignal(SpatialPoint)

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

        self.ui = MapViewUI(mapViewCollection.stackedWidget)
        self.ui.show()
        self.ui.cbQgsVectorLayer.setFilters(QgsMapLayerProxyModel.VectorLayer)
        self.ui.tbName.textChanged.connect(self.sigTitleChanged)
        from timeseriesviewer.crosshair import getCrosshairStyle
        self.ui.actionSetCrosshairStyle.triggered.connect(
            lambda : self.setCrosshairStyle(getCrosshairStyle(
                parent=self.ui,
                crosshairStyle=self.mCrosshairStyle))
        )

        self.mapViewCollection = mapViewCollection
        self.sensorViews = collections.OrderedDict()

        self.mVectorLayer = None
        self.setVectorLayer(None)
        self.mShowVectorLayer = True

        self.mCrosshairStyle = CrosshairStyle()
        self.mShowCrosshair = True

        self.mIsVisible = True

        self.ui.actionToggleVectorVisibility.toggled.connect(self.setShowVectorOverlay)
        self.ui.actionToggleCrosshairVisibility.toggled.connect(self.setShowCrosshair)
        self.ui.actionToggleMapViewVisibility.toggled.connect(lambda b: self.setIsVisible(not b))

        self.setTitle(name)
        #forward actions with reference to this band view

    def setIsVisible(self, b):
        assert isinstance(b, bool)
        changed = b != self.mIsVisible

        self.mIsVisible = b

        for mapCanvas in self.mapCanvases():
            assert isinstance(mapCanvas, MapCanvas)
            mapCanvas.setVisible(b)
        if changed:
            self.sigMapViewVisibility.emit(b)


    def isVisible(self):
        return self.mIsVisible

    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)

            for mapCanvas in self.mapCanvases():
                assert isinstance(mapCanvas, MapCanvas)
                mapCanvas.setLayers([l for l in mapCanvas.layers() if isinstance(l, QgsRasterLayer)])
                mapCanvas.setLazyVectorSources([lyr])
                mapCanvas.refresh()

        else:
            #remove vector layers
            self.mVectorLayer = None
            for mapCanvas in self.mapCanvases():
                mapCanvas.setLayers([l for l in mapCanvas.mLayers if not isinstance(l, QgsVectorLayer)])

        self.sigVectorLayerChanged.emit()

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

    def setTitle(self, title):
        old = self.title()
        if old != title:
            self.ui.tbName.setText(title)

    def title(self):