profilevisualization.py

# -*- coding: utf-8 -*-
"""
/***************************************************************************
                              EO Time Series Viewer
                              -------------------
        begin                : 2017-08-04
        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

import os, sys, pickle, datetime
from collections import OrderedDict
from qgis.gui import *
from qgis.core import *
from qgis.PyQt.QtCore import *
from qgis.PyQt.QtXml import *
from qgis.PyQt.QtGui import *

from eotimeseriesviewer import jp
from eotimeseriesviewer.timeseries import *
from eotimeseriesviewer.utils import SpatialExtent, SpatialPoint, px2geo, loadUI, nextColor
from qps.plotstyling.plotstyling import PlotStyle, PlotStyleButton
from eotimeseriesviewer.pixelloader import PixelLoader, PixelLoaderTask
from eotimeseriesviewer.sensorvisualization import SensorListModel
from eotimeseriesviewer.temporalprofiles2d import LABEL_EXPRESSION_2D
from eotimeseriesviewer.temporalprofiles3d import LABEL_EXPRESSION_3D

import pyqtgraph as pg
from pyqtgraph import functions as fn
from pyqtgraph import AxisItem


import numpy as np

DEBUG = False
OPENGL_AVAILABLE = False
ENABLE_OPENGL = False

try:

    #import OpenGL
    OPENGL_AVAILABLE = True
    from eotimeseriesviewer.temporalprofiles3d import *

    #t = ViewWidget3D()
    #del t


except Exception as ex:
    print('unable to import OpenGL based packages:\n{}'.format(ex))



def getTextColorWithContrast(c):
    assert isinstance(c, QColor)
    if c.lightness() < 0.5:
        return QColor('white')
    else:
        return QColor('black')

def selectedModelIndices(tableView):
    assert isinstance(tableView, QTableView)
    result = {}

    sm = tableView.selectionModel()
    m = tableView.model()
    if isinstance(sm, QItemSelectionModel) and isinstance(m, QAbstractItemModel):
        for idx in sm.selectedIndexes():
            assert isinstance(idx, QModelIndex)
            if idx.row() not in result.keys():
                result[idx.row()] = idx
    return result.values()



class _SensorPoints(pg.PlotDataItem):
    def __init__(self, *args, **kwds):
        super(_SensorPoints, self).__init__(*args, **kwds)
        # menu creation is deferred because it is expensive and often
        # the user will never see the menu anyway.
        self.menu = None

    def boundingRect(self):
        return super(_SensorPoints,self).boundingRect()

    def paint(self, p, *args):
        super(_SensorPoints, self).paint(p, *args)


    # On right-click, raise the context menu
    def mouseClickEvent(self, ev):
        if ev.button() == QtCore.Qt.RightButton:
            if self.raiseContextMenu(ev):
                ev.accept()

    def raiseContextMenu(self, ev):
        menu = self.getContextMenus()

        # Let the scene add on to the end of our context menu
        # (this is optional)
        menu = self.scene().addParentContextMenus(self, menu, ev)

        pos = ev.screenPos()
        menu.popup(QtCore.QPoint(pos.x(), pos.y()))
        return True

    # This method will be called when this item's _children_ want to raise
    # a context menu that includes their parents' menus.
    def getContextMenus(self, event=None):
        if self.menu is None:
            self.menu = QMenu()
            self.menu.setTitle(self.name + " options..")

            green = QAction("Turn green", self.menu)
            green.triggered.connect(self.setGreen)
            self.menu.addAction(green)
            self.menu.green = green

            blue = QAction("Turn blue", self.menu)
            blue.triggered.connect(self.setBlue)
            self.menu.addAction(blue)
            self.menu.green = blue

            alpha = QWidgetAction(self.menu)
            alphaSlider = QSlider()
            alphaSlider.setOrientation(QtCore.Qt.Horizontal)
            alphaSlider.setMaximum(255)
            alphaSlider.setValue(255)
            alphaSlider.valueChanged.connect(self.setAlpha)
            alpha.setDefaultWidget(alphaSlider)
            self.menu.addAction(alpha)
            self.menu.alpha = alpha
            self.menu.alphaSlider = alphaSlider
        return self.menu



class PlotSettingsModel2DWidgetDelegate(QStyledItemDelegate):
    """

    """
    def __init__(self, tableView, temporalProfileLayer, parent=None):
        assert isinstance(tableView, QTableView)
        assert isinstance(temporalProfileLayer, TemporalProfileLayer)
        super(PlotSettingsModel2DWidgetDelegate, self).__init__(parent=parent)
        self._preferedSize = QgsFieldExpressionWidget().sizeHint()
        self.mTableView = tableView
        self.mTemporalProfileLayer = temporalProfileLayer
        self.mTimeSeries = temporalProfileLayer.timeSeries()

        self.mSensorLayers = {}

    def setItemDelegates(self, tableView):
        assert isinstance(tableView, QTableView)
        model = tableView.model()

        assert isinstance(model, PlotSettingsModel2D)
        for c in [model.cnSensor, model.cnExpression, model.cnStyle, model.cnTemporalProfile]:
            i = model.columnNames.index(c)
            tableView.setItemDelegateForColumn(i, self)

    def getColumnName(self, index):
        assert index.isValid()
        model = index.model()
        assert isinstance(model, PlotSettingsModel2D)
        return model.columnNames[index.column()]
    """
    def sizeHint(self, options, index):
        s = super(ExpressionDelegate, self).sizeHint(options, index)
        exprString = self.tableView.model().data(index)
        l = QLabel()
        l.setText(exprString)
        x = l.sizeHint().width() + 100
        s = QSize(x, s.height())
        return self._preferedSize
    """
    def exampleLyr(self, sensor):
        # if isinstance(sensor, SensorInstrument):
        if sensor not in self.mSensorLayers.keys():

            crs = QgsCoordinateReferenceSystem('EPSG:4862')
            uri = 'Point?crs={}'.format(crs.authid())
            lyr = QgsVectorLayer(uri, 'LOCATIONS', 'memory')
            f = sensorExampleQgsFeature(sensor)
            assert isinstance(f, QgsFeature)
            assert lyr.startEditing()
            for field in f.fields():
                lyr.addAttribute(field)