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()