forked from NationalSecurityAgency/qgis-latlontools-plugin
/
digitizer.py
252 lines (231 loc) · 10.7 KB
/
digitizer.py
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"""
/***************************************************************************
* *
* 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
import re
from qgis.PyQt.QtCore import QSize, QTextCodec
from qgis.PyQt.QtGui import QIcon
from qgis.PyQt.QtWidgets import QDialog, QMenu
from qgis.PyQt.uic import loadUiType
from qgis.core import Qgis, QgsCoordinateReferenceSystem, QgsCoordinateTransform, QgsVectorDataProvider, QgsGeometry, QgsPointXY, QgsJsonUtils, QgsWkbTypes, QgsProject, QgsVectorLayerUtils, QgsSettings
from qgis.gui import QgsProjectionSelectionDialog
from .util import epsg4326, parseDMSString, tr
# import traceback
from . import mgrs
from . import olc
from .utm import utm2Point
FORM_CLASS, _ = loadUiType(os.path.join(
os.path.dirname(__file__), 'ui/digitizer.ui'))
class DigitizerWidget(QDialog, FORM_CLASS):
inputProjection = 0
inputXYOrder = 1
def __init__(self, lltools, iface, parent):
super(DigitizerWidget, self).__init__(parent)
self.setupUi(self)
self.lltools = lltools
self.iface = iface
self.canvas = iface.mapCanvas()
self.xymenu = QMenu()
icon = QIcon(os.path.dirname(__file__) + '/images/yx.svg')
a = self.xymenu.addAction(icon, tr("Y, X (Lat, Lon) Order"))
a.setData(0)
icon = QIcon(os.path.dirname(__file__) + '/images/xy.svg')
a = self.xymenu.addAction(icon, tr("X, Y (Lon, Lat) Order"))
a.setData(1)
self.xyButton.setIconSize(QSize(24, 24))
self.xyButton.setIcon(icon)
self.xyButton.setMenu(self.xymenu)
self.xyButton.triggered.connect(self.xyTriggered)
self.crsmenu = QMenu()
icon = QIcon(os.path.dirname(__file__) + '/images/wgs84Projection.svg')
a = self.crsmenu.addAction(icon, tr("WGS 84 (latitude & longitude)"))
a.setData(0)
icon = QIcon(os.path.dirname(__file__) + '/images/mgrsProjection.svg')
a = self.crsmenu.addAction(icon, tr("MGRS"))
a.setData(1)
icon = QIcon(os.path.dirname(__file__) + '/images/projProjection.svg')
a = self.crsmenu.addAction(icon, tr("Project CRS"))
a.setData(2)
icon = QIcon(os.path.dirname(__file__) + '/images/customProjection.svg')
a = self.crsmenu.addAction(icon, tr("Specify CRS"))
a.setData(3)
icon = QIcon(os.path.dirname(__file__) + '/images/pluscodes.svg')
a = self.crsmenu.addAction(icon, tr("Plus Codes"))
a.setData(4)
icon = QIcon(os.path.dirname(__file__) + '/images/utm.svg')
a = self.crsmenu.addAction(icon, tr("UTM"))
a.setData(5)
self.crsButton.setIconSize(QSize(24, 24))
self.crsButton.setIcon(icon)
self.crsButton.setMenu(self.crsmenu)
self.crsButton.triggered.connect(self.crsTriggered)
self.iface.currentLayerChanged.connect(self.currentLayerChanged)
self.addButton.clicked.connect(self.addFeature)
self.exitButton.clicked.connect(self.exit)
self.readSettings()
self.configButtons()
def currentLayerChanged(self):
self.close()
def showEvent(self, e):
self.labelUpdate()
def exit(self):
self.close()
def addFeature(self):
text = self.lineEdit.text().strip()
if text == "":
return
layer = self.iface.activeLayer()
if layer is None:
return
try:
if (self.inputProjection == 0) or (text[0] == '{'):
# If this is GeoJson it does not matter what inputProjection is
if text[0] == '{': # This may be a GeoJSON point
codec = QTextCodec.codecForName("UTF-8")
fields = QgsJsonUtils.stringToFields(text, codec)
fet = QgsJsonUtils.stringToFeatureList(text, fields, codec)
if (len(fet) == 0) or not fet[0].isValid():
raise ValueError(tr('Invalid Coordinates'))
geom = fet[0].geometry()
if geom.isEmpty() or (geom.wkbType() != QgsWkbTypes.Point):
raise ValueError(tr('Invalid GeoJSON Geometry'))
pt = geom.asPoint()
lat = pt.y()
lon = pt.x()
elif re.search(r'POINT\(', text) is not None:
m = re.findall(r'POINT\(\s*([+-]?\d*\.?\d*)\s+([+-]?\d*\.?\d*)', text)
if len(m) != 1:
raise ValueError(tr('Invalid Coordinates'))
lon = float(m[0][0])
lat = float(m[0][1])
else:
lat, lon = parseDMSString(text, self.inputXYOrder)
srcCrs = epsg4326
elif self.inputProjection == 1:
# This is an MGRS coordinate
text = re.sub(r'\s+', '', text) # Remove all white space
lat, lon = mgrs.toWgs(text)
srcCrs = epsg4326
elif self.inputProjection == 4:
text = text.strip()
coord = olc.decode(text)
lat = coord.latitudeCenter
lon = coord.longitudeCenter
srcCrs = epsg4326
elif self.inputProjection == 5:
text = text.strip()
pt = utm2Point(text, epsg4326)
lat = pt.y()
lon = pt.x()
srcCrs = epsg4326
else: # Is either the project or custom CRS
if re.search(r'POINT\(', text) is None:
coords = re.split(r'[\s,;:]+', text, 1)
if len(coords) < 2:
raise ValueError('Invalid Coordinates')
if self.inputXYOrder == 0: # Y, X Order
lat = float(coords[0])
lon = float(coords[1])
else:
lon = float(coords[0])
lat = float(coords[1])
else:
m = re.findall(r'POINT\(\s*([+-]?\d*\.?\d*)\s+([+-]?\d*\.?\d*)', text)
if len(m) != 1:
raise ValueError(tr('Invalid Coordinates'))
lon = float(m[0][0])
lat = float(m[0][1])
if self.inputProjection == 2: # Project CRS
srcCrs = self.canvas.mapSettings().destinationCrs()
else:
srcCrs = QgsCoordinateReferenceSystem(self.inputCustomCRS)
except Exception:
# traceback.print_exc()
self.iface.messageBar().pushMessage("", tr("Invalid Coordinate"), level=Qgis.Warning, duration=2)
return
self.lineEdit.clear()
caps = layer.dataProvider().capabilities()
if caps & QgsVectorDataProvider.AddFeatures:
destCRS = layer.crs() # Get the CRS of the layer we are adding a point toWgs
transform = QgsCoordinateTransform(srcCrs, destCRS, QgsProject.instance())
# Transform the input coordinate projection to the layer CRS
x, y = transform.transform(float(lon), float(lat))
geom = QgsGeometry.fromPointXY(QgsPointXY(x, y))
result = self.iface.vectorLayerTools().addFeature( layer, {}, geom)
if result[0]:
self.lltools.zoomTo(srcCrs, lat, lon)
def labelUpdate(self):
if self.inputProjection == 1: # MGRS projection
self.infoLabel.setText(tr('Input Coordinate: MGRS'))
return
if self.inputProjection == 4: # Plus Codes projection
self.infoLabel.setText(tr('Input Coordinate: Plus Codes'))
return
if self.inputProjection == 5: # UTM
self.infoLabel.setText(tr('Input Coordinate: UTM'))
return
if self.isWgs84():
if self.inputXYOrder == 0:
o = tr("Lat, Lon")
else:
o = tr("Lon, Lat")
proj = "Wgs84"
else:
if self.inputXYOrder == 0:
o = tr("Y, X")
else:
o = tr("X, Y")
if self.inputProjection == 2: # Project Projection
proj = self.canvas.mapSettings().destinationCrs().authid()
else:
proj = self.inputCustomCRS
s = "Input Projection: {} - {}: {}".format(proj, tr('Coordinate Order'), o)
self.infoLabel.setText(s)
def configButtons(self):
self.xyButton.setDefaultAction(self.xymenu.actions()[self.inputXYOrder])
self.crsButton.setDefaultAction(self.crsmenu.actions()[self.inputProjection])
def readSettings(self):
settings = QgsSettings()
self.inputProjection = int(settings.value('/LatLonTools/DigitizerProjection', 0))
self.inputXYOrder = int(settings.value('/LatLonTools/DigitizerXYOrder', 0))
self.inputCustomCRS = settings.value('/LatLonTools/DigitizerCustomCRS', 'EPSG:4326')
if self.inputProjection < 0 or self.inputProjection > 4:
self.inputProjection = 0
if self.inputXYOrder < 0 or self.inputXYOrder > 1:
self.inputXYOrder = 1
self.labelUpdate()
def saveSettings(self):
settings = QgsSettings()
settings.setValue('/LatLonTools/DigitizerProjection', self.inputProjection)
settings.setValue('/LatLonTools/DigitizerXYOrder', self.inputXYOrder)
settings.setValue('/LatLonTools/DigitizerCustomCRS', self.inputCustomCRS)
self.labelUpdate()
def crsTriggered(self, action):
self.crsButton.setDefaultAction(action)
self.inputProjection = action.data()
if self.inputProjection == 3:
selector = QgsProjectionSelectionDialog()
selector.setCrs(QgsCoordinateReferenceSystem(self.inputCustomCRS))
if selector.exec():
self.inputCustomCRS = selector.crs().authid()
else:
self.inputCustomCRS = 'EPSG:4326'
self.saveSettings()
def xyTriggered(self, action):
self.xyButton.setDefaultAction(action)
self.inputXYOrder = action.data()
self.saveSettings()
def isWgs84(self):
if self.inputProjection == 0: # WGS 84
return True
elif self.inputProjection == 2: # Projection Projection
if self.canvas.mapSettings().destinationCrs() == epsg4326:
return True
return False